CN106248051B - missile flying parameter recording device - Google Patents

Abstract

The invention discloses a kind of missile flying parameter recording devices, are related to data acquisition and measuring device technical field.Described device includes portable main machine, and the portable main machine includes video sampling and compressing module, embedded MCU data acquisition module, embedded computer, DC-DC power source conversion module, human-computer interaction module and lithium ion auto charge and discharge module.The data logging plant can find the failure that missile truck is likely to occur in time, and the parameter in Missile Launching Process is acquired and is recorded, and keep corresponding weaponry operation more stable, and improve military training level.

Description

Missile Flight Parameter Recording Device

technical field

The invention relates to the technical field of data acquisition and measurement devices, in particular to a missile flight parameter recording device.

Background technique

The command signal is the core signal to control the flight of the missile until it hits the target, and it is the key to the completion of the combat mission of the tank. The command signal is formed in the guidance electronic box. The guidance electronic box calculates the pitch and pitch angle deviations measured by the TV goniometer, the angular velocity sensor and the tilt angle signal measured by the vehicle inclinometer according to the control equation. The yaw control command signal is encoded and sent to the laser transmitter, and the laser transmitter sends out the control command signal to control the maneuvering flight of the missile until it hits the target. At present, although some missile weapon systems are equipped with detection engineering vehicles, the missile detection engineering vehicles do not detect the correctness of the command signals sent by the missile launch vehicles. If the signals are not detected, it is impossible to determine whether the missile launch vehicles are normal.

In addition, in the training of the troops, live ammunition shooting is an important subject to test the training effect of the troops and the overall performance of the weapon system, and the launch process of the missile is fleeting. During this process, whether the weapon system works normally and whether the soldiers operate correctly, It is difficult to obtain an accurate judgment only by on-site observation, especially in the process of the missile launch operation failure (high missile) in the recent army live ammunition target training. Technical improvement is impossible, so how to collect a large amount of data information in limited live ammunition training and make an objective and fair evaluation of this process is very important for improving the operational skills of soldiers and the performance of weapon systems.

Contents of the invention

The technical problem to be solved by the present invention is to provide a missile flight parameter recording device, which can detect possible failures of the missile launching vehicle in time, collect and record the parameters in the missile launching process, and make the corresponding weapons and equipment operate More stability and improved troop training.

In order to solve the above technical problems, the technical solution adopted by the present invention is: a missile flight parameter recording device, characterized in that: it comprises a portable host, and the portable host includes a video acquisition compression module, an embedded MCU data acquisition module, an embedded Computer, DC-DC power conversion module, man-machine interaction module and lithium ion automatic charging and discharging module, the signal output terminal of the TV angle measuring device in the missile launching vehicle is respectively connected with the signal input of the video acquisition compression module and the embedded MCU data acquisition module The terminal is connected, and the signal output end of guidance device and laser launcher in the missile launching vehicle is connected with the signal input end of described embedded MCU data acquisition module; The signal input end of described video acquisition compression module and embedded MCU data acquisition module is connected with The signal input end of described embedded computer is connected, and described video acquisition compression module is used for finishing the digitized acquisition, compression and buffer transmission of the analog video that missile launching vehicle TV angle measuring device produces, and described embedded MCU data acquisition module is used for To complete the collection, buffering and transmission of the projectile height and azimuth deviation signals generated by the TV angle measuring device of the missile launching vehicle, the missile attitude control signal generated by the guidance device and the laser command signal generated by the laser transmitter; the human-computer interaction The module is bidirectionally connected to the embedded computer, and the lithium-ion automatic charging and discharging module is connected to the power input end of the module that needs power supply in the portable host through the DC-DC power conversion module to provide working power for it .

A further technical solution is: the parameter recording device also includes an external removable data storage device module and an external AC-DC power supply module, and the external removable data storage device module is connected to the data transmission port of the embedded computer connection, the power input end of the AC-DC power supply module is connected to the power output end of the 220V mains or generator, and the output end of the AC-DC power supply module is connected to the power input end of the DC-DC power conversion module .

A further technical solution is: the video capture compression module includes a video digitization capture module, a USB high-speed data transmission unit, an RS232 universal serial interface unit, an FPGA unit, a CPLD unit, a static storage unit and a nonvolatile program storage unit, so that The input end of the video digitization acquisition module is connected with the signal output end of the TV angle measuring device, and the signal output end of the video digitization acquisition module is connected with the signal input end of the FPGA unit, for completing the video line and field synchronous control, and A /D conversion; the USB high-speed data transmission unit is bidirectionally connected with the FPGA unit for completing video continuous field image transmission; the RS232 universal serial interface unit is bidirectionally connected with the FPGA unit for realizing the video Acquisition and compression module carries out data communication with described embedded computer; Described CPLD unit is connected with the input end of described FPGA unit, is used for completing the configuration FPGA working sequence; Described static storage unit is bidirectionally connected with described FPGA unit, is used for Data buffering; the non-volatile program storage unit is connected to the input of the FPGA unit for storing the program used by the FPGA unit; the FPGA unit is used to complete the compression of video data, interface control and data transmission, video Decompression and video playback.

A further technical solution is: the video digital acquisition module adopts Philips video decoding chip SAA711.

A further technical solution is: the USB high-speed data transmission unit adopts a CY7C68013 chip.

A further technical solution is: the RS232 universal serial interface unit uses an SP3232ECP type chip.

Further technical scheme is: described embedded MCU data acquisition module comprises embedded ARM7 processor, UART serial interface module, USB data transmission interface module, data acquisition interface module, system reset circuit, SDRAM data memory and FLASF program memory, Described UART serial interface module is bidirectionally connected with described embedded ARM7 processor, is used to realize the data interaction of described data acquisition module and embedded computing; USB data transmission interface module is bidirectionally connected with described embedded ARM7 processor, It is used to realize the data interaction between the data acquisition module and the embedded computing; the system reset circuit is connected with the reset terminal of the embedded ARM7 processor; the SDRAM data memory and the FLASF program memory are bidirectionally connected with the ARM7 processor, For storing relevant data; the input end of the data acquisition interface module is connected with the signal output end of the guidance device and the laser transmitter, and the output end of the data acquisition interface is connected with the signal input end of the ARM7 processor.

A further technical solution is: the system reset circuit includes a chip U1, the chip U1 uses a power monitoring chip CAT1025JI-30 with I2C storage, one end of the reset switch is grounded, and the other end is divided into two circuits, the first circuit is connected to the Pin 1 of U1 is connected, the second path is connected to VDD through resistor R85, and pin 2 of U1 is divided into two paths, the first path is connected to VDD through resistor R67, and the second path is the reset signal output terminal of the reset circuit. Pin 3 of the U1 is grounded through a resistor R30, pin 4 and pin 7 of the U1 are grounded, pin 5 of the U1 is divided into two paths, the first path is connected to VDD through a resistor R21, and the second path is connected to the processor The SDA pin of the U1 is connected to the SDA pin; the 6 pins of the U1 are divided into two paths, the first path is connected to VDD through the resistor R20, the second path is connected to the SCL pin of the processor, and the 8 pins of the U1 are connected to VDD.

A further technical solution is: the data acquisition interface module includes four SP3243E serial chips.

A further technical solution is: the lithium-ion automatic charging and discharging module includes a pulse width modulation switching power supply integrated control chip N4, the N4 uses KA7500B, the pin 1 of the N4 is divided into two paths, and the first path is grounded through a resistor R10 , the second path is connected to the node of resistor R20 and inductor L1 through resistor R9; the 2 pins of the N4 are divided into two paths, the first path is connected to the 3 pins of the N4 through the capacitor C3, and the second path is sequentially passed through the resistor R15, resistor R16 and light-emitting diode H1 are grounded; 4 pins of the N4 are grounded via the resistor R21; 5 pins of the N4 are grounded via the capacitor C2; 6 pins of the N4 are grounded via the resistor R4; 7 pins of the N4 are grounded ; The 8 pins of the N4 are connected to the 11 pins of the N4; the 9-10 pins of the N4 are grounded; the 11 pins of the N4 are connected to the base of the transistor T1 through the resistor R2; the 12 pins of the N4 are divided into Two paths, the first path is connected to the emitter of the triode T1, the second path is connected to the base of the triode through the resistor R1; the 13th pin of the N4 is grounded; the 14th pin of the N4 is connected to the junction of the resistor R15 and the resistor R16 ; The 15 pins of the N4 are divided into two roads, the first road is connected to the node of the resistor R15 and the resistor R16 through the resistor R8, and the second road is connected to the 3 pins of the N4 through the capacitor C5; the power input terminal of the charging and discharging module Connected to the emitter of the triode T1, the power input end of the charging and discharging module is provided with a reverse diode D1, the collector of the triode T1 is divided into two circuits, the first circuit is connected to the reverse diode D2, and the second circuit is connected to the reverse diode D2. The inductance L1 is connected to one end of the resistor R20, the other end of the resistor R20 is the power output end of the charge-discharge module, the resistor R12 is connected in parallel with the resistor R20; one end of the resistor R14 is connected to the power output end of the charge-discharge module connected, the other end is connected to pin 2 of the N4; one end of the capacitor C4 is grounded, and the other end is connected to the power output end of the charging and discharging module; the power output end of the charging and discharging module is provided with a pull-down resistor R19, and the other end of the pull-down resistor R19 Ground through resistor R10, sliding rheostat VR1 and resistor R17 in sequence; pin 16 of the N4 is connected to the junction of the sliding rheostat VR1 and resistor R17.

The beneficial effect produced by adopting the above-mentioned technical solution is that the parameter recording device can be equipped to the missile combat unit, and when the missile launching vehicle is performing service repairs, the possible failure symptoms can be found in time through automatic data collection, processing and analysis. , to find out the cause of the failure; it is also possible to confirm the technical status of the missile launch vehicle through data collection, analysis and processing before live ammunition shooting, that is, whether the vehicle can complete the normal missile launch task.

The parameter recording device can also be used in the live ammunition shooting training process to collect and store the data related to the missile control command in the whole process of missile launch in real time, and perform later playback and analysis to judge the work of the missile launch vehicle in the missile launch process. Is it normal. It is also possible to analyze and evaluate the training results of missile launching through data backtracking, so as to improve the training level of troops.

The parameter recording device can also be used for the inspection and acceptance of military representatives and factory production, debugging and testing, which can improve the inspection and acceptance means of military representatives and improve the efficiency and quality of equipment production.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the functional block diagram of missile flight parameter recording device of the present invention;

Fig. 2 is the functional block diagram of video capture compression module;

Figure 3 is a circuit schematic diagram of the connection between SAA7113H and FPGA;

Fig. 4 is the circuit principle diagram of CPLD unit;

Fig. 5 is the circuit principle diagram of RS232 universal serial interface unit;

Fig. 6 is the functional block diagram of embedded MCU data acquisition module;

Figure 7-8 is a schematic diagram of the power supply circuit used by the embedded MCU data acquisition module;

Fig. 9 is a schematic diagram of a system reset circuit;

Fig. 10 is a schematic circuit diagram of the lithium-ion automatic charging and discharging module;

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

As shown in Figure 1, the present invention discloses a missile flight parameter recording device, comprising a portable host, the portable host includes a video acquisition compression module, an embedded MCU data acquisition module, an embedded computer, a DC-DC power conversion module, For the human-computer interaction module and the lithium ion automatic charging and discharging module, preferably, the embedded computer uses a PC-104 type embedded computer. The signal output end of the TV angle measuring device in the missile launch vehicle is connected with the signal input end of the video acquisition compression module and the embedded MCU data acquisition module respectively, and the signal output end of the guidance device and the laser launcher in the missile launch vehicle is connected with the embedded The signal input end of type MCU data acquisition module is connected; The signal input end of described video acquisition compression module and embedded MCU data acquisition module is connected with the signal input end of described embedded computer, and described video acquisition compression module is used for completing pairing The digital acquisition, compression and buffer transmission of the analog video produced by the TV angle measuring device of the missile launching vehicle, the embedded MCU data acquisition module is used to complete the height of the projectile and the azimuth angle deviation signal generated by the TV angle measuring device of the missile launching vehicle, The missile attitude control signal generated by the guidance device and the laser command signal generated by the laser transmitter are collected, buffered and transmitted; the human-computer interaction module is bidirectionally connected with the embedded computer, and the lithium ion automatic charging and discharging module passes through the The DC-DC power conversion module is connected to the power input end of the modules in the portable host that need to be powered, so as to provide them with working power.

The software includes: the software developed by BCB++2006 advanced programming language based on WINDOWS2000 system running on PC-104 embedded computer, and the embedded real-time system based on uCOS-II running on ARM7, developed using ADS1.2 compilation environment Embedded software for mixed programming of C/C++ and assembly language, and firmware for FPGA configuration based on VHDL design language development in the Quartus II development environment.

The recording device can perform two main functions:

The first is the detection and fault diagnosis function. That is, during the simulated launch or system self-inspection of the missile launch vehicle, the real-time collection of the missile height and azimuth deviation data generated by the TV angle measuring device of the missile launch vehicle is completed, and the missile control azimuth and yaw data generated by the guidance device are collected. Real-time collection, real-time collection of laser instructions issued by the laser transmitter, digital conversion of analog video signals generated by the TV angle measuring device, image processing and missile mark recognition, and missile launch instructions are automatically obtained through data analysis and processing Whether the circuit is working normally. Through this function, when the missile launching vehicle is performing service repairs, through the recorded data, it is possible to detect possible fault symptoms in time and find out the cause of the fault; it can also be used to analyze data collection and analysis before actual shooting. Confirm the technical status of the advanced missile launch vehicle, that is, whether the vehicle can complete the normal missile launch task.

Second, the real-time data recording and processing playback function of live ammunition shooting. That is to say, the device has a "black box" function. During the live ammunition shooting process, the missile height and azimuth angle deviation data generated by the TV angle measuring device of the missile launching vehicle, the missile control azimuth and yaw data generated by the guidance device, and the laser transmitter The laser command data sent out is collected and stored in real time, and the analog video signal generated by the TV angle measuring device is digitally converted and collected and stored in real time. After the live ammunition is shot, the entire missile launch process can be reproduced by analyzing, processing and replaying the data. . Through this function, data can be traced back, which is of great significance for evaluating the training performance of missile launching and improving the training level of troops.

Among them, the PC-104 computer adopts Advantech's PCM-3370F-M0A1 embedded computer board, which adopts 650MHz Fanless processor and VIA VT8606 and VT82C686B chipset, onboard memory 256MB, VGA/LCD controller with shared memory and PC/104and PC/104-Plus data bus, equipped with 40GB electronic disk with IDE interface.

In order to make the equipment work uninterruptedly during the switching process of the vehicle power supply and the mains power supply (or generator power supply), an uninterruptible power supply is designed. The design uses a lithium-ion battery with light weight and high energy storage, and an automatic control module for power supply charging and discharging. The lithium-ion automatic charging and discharging power module is composed of 6 lithium-ion batteries, charging and discharging voltage and current automatic control board, the maximum supply voltage is 25.2V, the maximum output current is 4.2A, and the rated capacity at room temperature is 3.6AH.

The DC-DC power conversion module includes two units, one is to provide power for PC-104 embedded computer, MCU single-chip microcomputer, video acquisition card and data acquisition card, this unit adopts the XPWR104HR-75W power supply of American RTD that conforms to PC/104 specification Module, wide voltage input range 8-32VDC, output voltage 5V, 12V, maximum output power: 75W, with output overload and short circuit protection functions, input filtering, reverse polarity and overvoltage protection and other functions, and its conversion efficiency can reach 92 %; Another unit is to provide power for the liquid crystal display, the input is 15-32VDC, the output is +12VDC, and the rated output current is 3A.

The touch human-computer interaction device module is composed of a liquid crystal display unit and a touch screen unit. The liquid crystal display unit adopts Yuantai's PD064VT5 liquid crystal display, the screen size is 6.4 inches, the display resolution is 640×R G B×480, and the color is 262,144colors. It provides program interface display and data and video acquisition and analysis results display for the testing equipment; the touch screen unit adopts PenMount 95251 touch screen, its interface is USB1.1, the device provides friendly human-computer interaction function.

The parameter recording device also includes an external removable data storage device module and an external AC-DC power supply module, the external removable data storage device module is connected to the data transmission port of the embedded computer, and the AC- The power input end of the DC power supply module is connected to the power output end of the 220V mains or generator, and the output end of the AC-DC power supply module is connected to the power input end of the DC-DC power conversion module. In addition, the recording device and the recorded device need to be connected through a video acquisition connection cable, a power supply connection cable of a transmitting vehicle, and a dedicated VGA video cable.

The external removable data storage device module uses a large-capacity mobile hard disk with a USB interface of 80GB to store the emission control data and video data obtained from detection, recording and analysis. External AC-DC power supply module, when the system is not connected to the missile launch vehicle, the AC-DC power supply module provides a stable DC power supply. The input voltage is 220V AC, the frequency is 50HZ±5%, the input current is 0.35A, the output voltage is 24V DC, and the output current is 3A.

As shown in Figure 2, the video capture and compression module includes a video digital capture module, a USB high-speed data transmission unit, an RS232 universal serial interface unit, an FPGA unit, a CPLD unit, a static storage unit and a non-volatile program storage unit. The input end of the video digitization acquisition module is connected with the signal output end of the TV angle measuring device, and the signal output end of the video digitization acquisition module is connected with the signal input end of the FPGA unit for completing the video line and field synchronous control, and A/D conversion; the USB high-speed data transmission unit is bidirectionally connected with the FPGA unit for completing video continuous field image transmission; the RS232 universal serial interface unit is bidirectionally connected with the FPGA unit for realizing the described Video acquisition compression module carries out data communication with described embedded computer; Described CPLD unit is connected with the input terminal of described FPGA unit, is used to complete the configuration FPGA working sequence; Described static storage unit is bidirectionally connected with described FPGA unit, uses For data buffering; the non-volatile program storage unit is connected to the input of the FPGA unit for storing the program used by the FPGA unit; the FPGA unit is used to complete the compression of video data, interface control and data transmission, Video decompression and video playback.

The video acquisition and compression module mainly completes the digital acquisition, compression and buffer transmission of the analog video produced by the TV angle measuring device of the missile launch vehicle.

The working process is: after the system is powered on and reset, the CPLD reads the configuration program segment in the FLASH, completes the configuration of the FPGA, the soft core of the FPGA starts to work, configures the registers of the SAA7113 according to the requirements, and opens two SDRAMs for the SAA7113. Two image data buffers are opened on SDRAM for FPGA image compression, and two image data buffers are opened for CY7C68013 (shared with the FPGA image compression buffer). After the configuration is completed, the FPGA The soft core is in the waiting state and monitors the RS-232 serial port command. After receiving the self-test command, the module self ^- tests and sends the self-tested code. register, start the analog-to-digital conversion, carry out digital image acquisition and write into the buffer, when an image is acquired, the soft core of FPGA reads the image data from the buffer of SAA7113 and compresses the image, the compression algorithm used is JEPG2000, write into the buffer of CY7C68013 after the compression is completed, after the buffer of CY7C68013 is full of image data, FPGA sends the data of this buffer to the FIFO of CY7C68013, and CY7C68013 packs the image data and sends it to the PC-104 computer. This process loops continuously. The image acquisition process stops after the soft core of the FPGA receives the stop acquisition command from the RS-232 serial port.

Introduction of main components

The FPGA unit adopts the surface mount package EP2C20F484C8. The video digital acquisition module adopts Philips video decoding chip SAA7113. SAA7113 is a video decoding chip that can input 4 channels of analog video signals. The 4 channels of input can be converted through different configurations of internal registers. The input can be 4 channels of CVBS or 2 S-Video (Y/C) signals, output 8-bit "VPO" bus, in standard ITU 656, YUV 4:2:2 format.

SAA7113 is compatible with PAL, NTSC and SECAM, and can automatically detect the field frequency of 50 or 60Hz, and can automatically switch between PAL and NTSC. There are a series of registers inside the 7113, which can be configured as different parameters. The control of chromaticity, brightness, etc. is by rewriting different values to the corresponding registers. The reading and writing of the registers need to be carried out through the I2C bus.

The analog and digital parts of SAA7113 are powered by +3.3V, and the digital I/O interface is compatible with +5V. The power consumption is 0.4W in normal operation and 0.07W in idle time. 7113 needs an external 24.576MHz crystal, and has a phase-locked loop (LLC) inside, which can output a 27MHz system clock. The chip has a power-on automatic reset function, and there is an external reset pin (CE), low-level reset, the output bus becomes three-state after reset, and it will automatically recover after the reset signal becomes high. automatic reset. 7113 is QFP44 package, and the schematic diagram of the circuit connecting SAA7113H and FPGA is shown in Figure 3.

Static storage unit: It adopts MT48LC4M16 single-chip 4M×16Bit, which is widely used at present, and two sdrams are connected in parallel to form 32-bit bandwidth. The maximum support is MT48LC16M16 SDRAM. When using MT48LC4M16, 36 pins are suspended, and when using MT48LC16M16, 36 pins are SA[12].

Non-volatile program storage unit: The large-capacity nor-type flash 28F128J3, 28F640J3, 28F320J3 of Intel Corporation, which is widely used at present, is adopted. The maximum supported size is 32MB x 8bit. Among them, EA24 is for expanding 32M×8Bit, EA23 is for expanding 16M×8Bit, pin EA22 is for connecting 8M×8Bit.

CPLD unit: CPLD adopts MAXII series EPM570T100C5, uses CPLD to control FPGA configuration pins, fetches FPGA configuration program from flash and transfers it to FPGA for execution. The principle is shown in Figure 4.

USB high-speed data transmission unit: choose Cypress Semiconductor's CY7C68013, CY7C68013 belongs to EZ-USB FX2 series, EZ-USB FX2 is the world's first integrated USB2.0 microprocessor, it integrates USB2.0 transceiver, SIE (serial interface engine), enhanced 8051 microcontroller and programmable peripheral interface. The original structure of FX2 can make the data transfer rate reach 56Mbytes/s, which is the maximum bandwidth allowed by USB2.0. In FX2, the intelligent SIE can handle many USB1.1 and USB2.0 protocols in hardware, thereby reducing development time and ensuring USB compatibility. GPIF (General Programmable Interface) and master/slave endpoint FIFO (8-bit or 16-bit data bus) provide simple and seamless connection interfaces for ATA, UTOPIA, EPP, PCMCIA and DSP, etc.

RS232 universal serial interface unit: the serial port chip adopts SP’s universal serial port chip SP3232ECP, this chip can realize the simultaneous transmission of RS232 data of two channels, its schematic diagram is shown in Figure 5.

Power supply circuit: The video capture and compression module needs two power supplies, one for +3.3V and one for +1.2V. The design uses a linear adjustable power supply LM1085. The input voltage of the chip is +5V. By adjusting the R3 of the output reference resistor in the circuit , R4, R5, R6, can get +3.3V and +1.2V output. The current of the two outputs can reach 2A.

The embedded MCU data acquisition module uses PHILIP's RAM7 embedded MCU and supporting peripheral circuits to complete the missile height and azimuth deviation signals generated by the TV angle measuring device of the missile launch vehicle, the missile attitude control signal generated by the guidance device, and the laser transmitter. The generated laser instruction signal is collected, buffered and transmitted.

As shown in Figure 6, the embedded MCU data acquisition module includes an embedded ARM7 processor, a UART serial interface module, a USB data transmission interface module, a data acquisition interface module, a system reset circuit, an SDRAM data memory and a FLASF program memory. Described UART serial interface module is bidirectionally connected with described embedded ARM7 processor, is used to realize the data interaction of described data acquisition module and embedded computing; USB data transmission interface module is bidirectionally connected with described embedded ARM7 processor, It is used to realize the data interaction between the data acquisition module and the embedded computing; the system reset circuit is connected with the reset terminal of the embedded ARM7 processor; the SDRAM data memory and the FLASF program memory are bidirectionally connected with the ARM7 processor, For storing relevant data; the input end of the data acquisition interface module is connected with the signal output end of the guidance device and the laser transmitter, and the output end of the data acquisition interface is connected with the signal input end of the ARM7 processor.

Working principle After the system is powered on and reset, the embedded ARM7 processor reads the program from the external program memory FLASH, initializes the system I/0 port, initializes the USB port and UART port, initializes the data acquisition port, and distributes data Buffer (including TV angle measurement azimuth, high and low angle deviation data buffer, missile yaw, pitch control data buffer, input laser transmitter control command data buffer, laser output photoelectric conversion data buffer, initialization system interrupt port) , the system initialization is over, wait for the host computer handshake self-test command after the delay, and send the system initialization status command to the host computer, at this time the software is in the waiting state, and monitors the commands of the UART serial port. After receiving the data acquisition preparation command , start each interrupt port, when the interrupt port detects the firing signal of the missile launching vehicle, start the data acquisition subroutine, start the USB data transmission subroutine, and carry out data acquisition, buffering and transmission. After receiving the data collection completion instruction from the host computer, exit the data collection and transmission program and enter the standby state.

Main components:

Embedded ARM7 processor: LPC2210 type ARM processor is adopted, and LPC2210 is based on a 16/32-bit ARM7TDMI-STM CPU that supports real-time simulation and tracking. Applications with tight control over code size can use 16-bit Thumb mode to reduce code size by more than 30% with little loss in performance.

Due to the LPC2210's 144-pin package, extremely low power consumption, multiple 32-bit timers, 8-way 10-bit ADC, PWM output, and up to 9 external interrupts, they are especially suitable for industrial control, medical systems, access control and electronic Cash register (POS). By configuring the bus, LPC2210 can provide up to 76 GPIOs. Due to the built-in wide range of serial communication interfaces, the LPC2210 is also very suitable for communication gateways, protocol converters, embedded software modems, and various other types of applications.

External memory chip SDRAM and FLASH:

Because the LPC2210 has no internal program memory and the data storage is relatively small, the data acquisition module expands two external memories, one is the NOR FLASH program memory, and the other is the PSRAM data memory. For SST39V160, the data memory is MT45W4M16 with 16-bit bus interface and 8MB. Both external program memory and data memory use the external data bus (address bus and data bus) of RAM.

The USB data transmission interface module adopts PDIUSBD12. PDIUSBD12 is a cost-effective USB device. It is usually used as a high-speed general-purpose parallel interface in a microcontroller system to communicate with a microcontroller. It also supports local DMA transmission.

UART serial interface module: SP3232E series is a low-power consumption device with 2 drivers/2 receivers. SP3232E series has a high-efficiency charge pump, and only 0.1μF capacitor can be operated when the operating voltage is 3.3V. A charge pump allows the SP3232E Series to send RS-232 compliant signals at voltages ranging from 3.3V to 5.0V.

Power supply circuit: The circuit on the embedded MCU data acquisition module needs two sets of power supplies, the I/O port power supply is 3.3V, and the core, internal and peripheral power supply is 1.8V. In order to make the system power supply stable, set the external power supply of the module to 12V, first reduce the 12V external power supply to 5V using the switching power supply regulator chip LM2575, and then change the 5V power supply to 3.3V and 1.8V. SPX1117 has a very low quiescent current, and its low dropout voltage is only 1.1V at full load, as shown in Figure 7-8.

As shown in Figure 9, the system reset circuit includes a chip U1, the chip U1 uses a power monitoring chip CAT1025JI-30 with I2C storage, one end of the reset switch is grounded, and the other end is divided into two paths, the first path is connected to the The pin 1 of U1 is connected, the second path is connected to VDD through resistor R85, the pin 2 of U1 is divided into two paths, the first path is connected to VDD through resistor R67, and the second path is the reset signal output terminal of the reset circuit ( This terminal is connected to the nRST pin of RAM to generate a voltage reset signal), the 3rd pin of the U1 is grounded through the resistor R30, the 4th pin and 7th pin of the U1 are grounded, the 5th pin of the U1 is divided into two ways, the first One path is connected to VDD through resistor R21, and the second path is connected to the SDA pin of the processor; the 6 pins of U1 are divided into two paths, the first path is connected to VDD through resistor R20, and the second path is connected to the processor The SCL pin is connected, and the 8-pin of U1 is connected to VDD.

Data acquisition interface module: The output signal of the missile launching vehicle is high level +12V, low level -12V, so it is necessary to perform level conversion for data acquisition.

The data acquisition level conversion circuit uses the SP3243E of the serial port chip series, but only its receiving port is used. The SP3243E is a 3-driver/5-receiver device.

Because the system needs to collect 20 channels of signals, it needs 4 identical devices, which are divided into data acquisition port 1, data acquisition port 2, data acquisition port 3, and data acquisition port 4.

As shown in Figure 10, the lithium ion automatic charging and discharging module includes a pulse width modulation switching power supply integrated control chip N4, the N4 uses KA7500B, the 1 pin of the N4 is divided into two circuits, the first circuit is grounded through the resistor R10 , the second path is connected to the node of resistor R20 and inductor L1 through resistor R9; the 2 pins of the N4 are divided into two paths, the first path is connected to the 3 pins of the N4 through the capacitor C3, and the second path is sequentially passed through the resistor R15, resistor R16 and light-emitting diode H1 are grounded; 4 pins of the N4 are grounded via the resistor R21; 5 pins of the N4 are grounded via the capacitor C2; 6 pins of the N4 are grounded via the resistor R4; 7 pins of the N4 are grounded ; The 8 pins of the N4 are connected to the 11 pins of the N4; the 9-10 pins of the N4 are grounded; the 11 pins of the N4 are connected to the base of the transistor T1 through the resistor R2; the 12 pins of the N4 are divided into Two paths, the first path is connected to the emitter of the triode T1, the second path is connected to the base of the triode through the resistor R1; the 13th pin of the N4 is grounded; the 14th pin of the N4 is connected to the junction of the resistor R15 and the resistor R16 ; The 15 pins of the N4 are divided into two roads, the first road is connected to the node of the resistor R15 and the resistor R16 through the resistor R8, and the second road is connected to the 3 pins of the N4 through the capacitor C5.

The power input end of the charge-discharge module is connected to the emitter of the triode T1, the power input end of the charge-discharge module is provided with a reverse diode D1, and the collector of the triode T1 is divided into two circuits, the first circuit It is connected to the reverse diode D2, the second path is connected to one end of the resistor R20 through the inductance L1, the other end of the resistor R20 is the power output end of the charging and discharging module, the resistor R12 is connected in parallel with the resistor R20; one end of the resistor R14 is connected to the The power output terminal of the charging and discharging module is connected, and the other end is connected with the 2 pins of the N4; one end of the capacitor C4 is grounded, and the other end is connected with the power output terminal of the charging and discharging module; the power output terminal of the charging and discharging module is provided with a pull-down Resistor R19, the other end of pull-down resistor R19 is grounded through resistor R10, sliding rheostat VR1 and resistor R17 in turn; pin 16 of N4 is connected to the node of sliding rheostat VR1 and resistor R17.

The integrated circuit KA7500B used in the charging and discharging circuit of the lithium-ion battery pack is a dedicated pulse width modulation switching power supply integrated controller produced by Samsung.

The battery pack is composed of six 4.2V lithium-ion batteries connected in series, the maximum output current is 4.2A, and the maximum output voltage is 25.2V.

The schematic diagram of its charging and discharging circuit is shown in Figure 10 (only the charging and discharging circuit of one group of batteries is given, and the other five groups of circuits are the same).

It has two feedback circuits, which are current feedback and voltage feedback. The positive and negative poles of the current feedback correspond to the 1st and 2nd pins of KA7500B. The output current generates a voltage drop on the resistors R12 and R20, and the voltage drop passes through R9, R10, R14, and R15 resistors feed back. When the voltage of pin 1 of KA7500B is greater than the voltage of pin 2, KA7500B will reduce the output pulse width (pin 8, 11) to reduce the current, otherwise increase the pulse width to make the output The current is constant at the preset value, and its constant current value conforms to the following formula:

In the formula, R is the resistance value after R12 and R20 are connected in parallel, so the theoretical calculation value of the constant current value is 735mA.

The positive and negative poles of the voltage feedback in the circuit correspond to the 16th and 15th pins of KA7500B. After power-on, the 14th pin of KA7500B outputs a stable 5V voltage, which makes the LED light up as a power indicator, and the 5V voltage is used as a reference Voltage, provided to KA7500B pin 15 as a voltage reference, after the output voltage is divided by R19, R10, VR1 and R17, compared with the voltage reference, when the voltage is too large, the pulse width will be reduced, and if the voltage is too small, the pulse width will be increased. to maintain a constant output voltage value, its input

The output voltage value conforms to the following formula:

Since the two feedbacks of the KA7500B are controlled after the internal phase "AND", when the output voltage is lower than the constant voltage value, the current feedback plays a controlling role, and when the output voltage reaches the constant voltage value, the voltage feedback plays the role of control. Control function, so that the circuit completes the constant current/constant voltage control function. Its principle is exactly the same as that of the regulated power supply, except that the circuit is a switching power supply control mode, so it has high efficiency and low temperature rise.

DC-DC power conversion module:

DC-DC power conversion module chooses two power modules, one is to provide power for PC-104 computer, MCU single-chip microcomputer, video acquisition card and data acquisition card, this unit adopts XPWR104HR-75W power module of American RTD that conforms to PC/104 specification , wide voltage input range 8-32VDC, output voltage 5V, 12V, maximum output power: 75W, with output overload and short circuit protection functions, input filtering, reverse polarity and overvoltage protection and other functions, and its conversion efficiency can reach 92% ; Another unit is to provide power for the liquid crystal display, the input is 15-32VDC, the output is +12VDC, and the rated output current is 3A.

The power supply module that supplies power to the LCD monitor needs to convert 24VDC to 12VDC with a current of 3.0A. Therefore, the PH50S24-12DC/DC 24-12/50W power supply module from LAMBDA of Japan was selected, which has reliable operation, good environmental adaptability and simple installation.

Human-computer interaction equipment module: including liquid crystal display and pressure-sensitive touch screen. The liquid crystal display adopts Yuantai's PD064VT5 liquid crystal display, the screen size is 6.4 inches, the display resolution is 640×R G B×480, and the color is 262,144colors. It provides program interface display and data and video acquisition and analysis results display for the testing equipment; the touch screen adopts PenMount 95251 touch screen , its interface is USB1.1, and the device provides friendly human-computer interaction functions.

External removable data storage device module: choose Samsung's GMHD-80 mobile hard disk.

External AC-DC power supply module: choose Nanjing Pengtu CDA330-220T12+24/150W AC/DC switching power supply.

The parameter recording device can be equipped to the missile combat unit, and when the missile launching vehicle is performing service repairs, through automatic data collection and processing and analysis, it is possible to detect possible failure symptoms in time and check the cause of the failure; it can also be used in Before live ammunition shooting, through data collection and analysis processing, confirm the technical status of the missile launch vehicle, that is, whether the vehicle can complete the normal missile launch task.

The parameter recording device can also be used in the live ammunition shooting training process to collect and store the data related to the missile control command in the whole process of missile launch in real time, and perform later playback and analysis to judge the work of the missile launch vehicle in the missile launch process. Is it normal. It is also possible to analyze and evaluate the training results of missile launching through data backtracking, so as to improve the training level of troops.

The parameter recording device can also be used for the inspection and acceptance of military representatives and factory production, debugging and testing, which can improve the inspection and acceptance means of military representatives and improve the efficiency and quality of equipment production.

Claims (8)

1. A missile flight parameter recording device is characterized in that: it comprises a portable host, and the portable host includes a video acquisition compression module, an embedded MCU data acquisition module, an embedded computer, a DC-DC power conversion module, and a human-computer interaction module and the lithium-ion automatic charging and discharging module, the signal output end of the TV angle measuring device in the missile launching vehicle is respectively connected with the signal input end of the video acquisition compression module and the embedded MCU data acquisition module, the guidance device and the laser emitting device in the missile launching vehicle The signal output end of the embedded MCU data acquisition module is connected with the signal input end of the embedded MCU data acquisition module; the signal input end of the video acquisition compression module and the embedded MCU data acquisition module is connected with the signal input end of the embedded computer, and the The video acquisition and compression module is used to complete the digital acquisition, compression and buffer transmission of the analog video produced by the TV angle measuring device of the missile launching vehicle, and the embedded MCU data acquisition module is used to complete the elastic video produced by the TV angle measuring device of the missile launching vehicle. The altitude and azimuth deviation signals, the missile attitude control signal generated by the guidance device and the laser command signal generated by the laser transmitter are collected, buffered and transmitted; the human-computer interaction module is bidirectionally connected with the embedded computer, and the lithium The ion automatic charge and discharge module is connected to the power input end of the module that needs power supply in the portable host through the DC-DC power conversion module, and is used to provide it with working power; the parameter recording device also includes an external removable data A storage device module and an external AC-DC power supply module, the external removable data storage device module is connected to the data transmission port of the embedded computer, and the power input terminal of the AC-DC power supply module is connected to 220V commercial power or The power output end of the generator is connected, and the output end of the AC-DC power supply module is connected with the power input end of the DC-DC power conversion module; the video capture compression module includes a video digitization capture module, a USB high-speed data transmission unit , RS232 universal serial interface unit, FPGA unit, CPLD unit, static storage unit and non-volatile program storage unit, the input end of the video digital acquisition module is connected with the signal output end of the TV angle measuring device, and the video digital acquisition module The signal output end of the signal output end is connected with the signal input end of the FPGA unit, is used for completing video line, field synchronous control, and A/D conversion; Continuous field image transmission; the RS232 universal serial interface unit is bidirectionally connected with the FPGA unit, and is used to realize the data communication between the video capture compression module and the embedded computer; the communication between the CPLD unit and the FPGA unit The input end is connected, and is used to complete the configuration FPGA work sequence; The static storage unit is bidirectionally connected with the FPGA unit, used for data buffering; The non-volatile program storage unit is connected with the input end of the FPGA unit, used for storing programs used by the FPGA unit; the FPGA unit is used for Complete video data compression, interface control and data transmission, video decompression and video playback. 2. The missile flight parameter recording device according to claim 1, characterized in that: the video digital acquisition module adopts Philips video decoding chip SAA711. 3. The missile flight parameter recording device according to claim 1, wherein the USB high-speed data transmission unit adopts a CY7C68013 chip. 4. The missile flight parameter recording device according to claim 1, characterized in that: said RS232 universal serial interface unit uses an SP3232ECP type chip. 5. missile flight parameter recording device as claimed in claim 1, is characterized in that: described embedded MCU data acquisition module comprises embedded ARM7 processor, UART serial interface module, USB data transmission interface module, data acquisition interface module , system reset circuit, SDRAM data memory and FLASF program memory, described UART serial interface module and described embedded ARM7 processor two-way connection, for realizing the data interaction of described data acquisition module and embedded computing; USB data transmission The interface module is bidirectionally connected with the embedded ARM7 processor, and is used to realize the data interaction between the data acquisition module and the embedded computing; the system reset circuit is connected with the reset terminal of the embedded ARM7 processor; the SDRAM data memory And the FLASF program memory is bidirectionally connected with the ARM7 processor for storing relevant data; the input end of the data acquisition interface module is connected with the signal output end of the guidance device and the laser transmitter, and the output of the data acquisition interface The terminal is connected with the signal input terminal of the ARM7 processor. 6. missile flight parameter recording device as claimed in claim 5, is characterized in that: described system reset circuit comprises chip U1, and described chip U1 uses the power monitoring chip CAT1025JI-30 that has I2C storage, and one end of reset switch is grounded , the other end is divided into two paths, the first path is connected to pin 1 of the U1, the second path is connected to VDD through the resistor R85, the pin 2 of the U1 is divided into two paths, the first path is connected to VDD through the resistor R67, and the second path is connected to VDD through the resistor R67. The second road is the reset signal output end of the reset circuit, the 3 pins of the U1 are grounded through the resistor R30, the 4 pins and the 7 pins of the U1 are grounded, the 5 pins of the U1 are divided into two roads, the first road is through Resistor R21 is connected to VDD, and the second path is connected to the SDA pin of the processor; the pin 6 of the U1 is divided into two paths, the first path is connected to VDD through the resistor R20, and the second path is connected to the SCL pin of the processor. The pins are connected, and the 8 pins of the U1 are connected to VDD. 7. The missile flight parameter recording device according to claim 5, characterized in that: the data acquisition interface module includes four SP3243E serial port chips. 8. The missile flight parameter recording device according to claim 1, characterized in that: the lithium ion automatic charging and discharging module includes a pulse width modulation switching power supply integrated control chip N4, and the N4 uses KA7500B, and 1 of the N4 The feet are divided into two paths, the first path is grounded through the resistor R10, the second path is connected to the node of the resistor R20 and the inductor L1 through the resistor R9; the 2 feet of the N4 are divided into two paths, the first path is connected to the capacitor C3 through the first path The 3 pins of the N4 are connected, and the second circuit is grounded through the resistor R15, the resistor R16 and the light-emitting diode H1 in turn; the 4 pins of the N4 are grounded through the resistor R21; the 5 pins of the N4 are grounded through the capacitor C2; the 6 pins of the N4 are grounded through the capacitor C2. The pin is grounded through the resistor R4; the 7 pins of the N4 are grounded; the 8 pins of the N4 are connected to the 11 pins of the N4; the 9-10 pins of the N4 are grounded; the 11 pins of the N4 are connected to the triode through the resistor R2 The base of T1 is connected; the 12 pins of the N4 are divided into two ways, the first way is connected with the emitter of the triode T1, and the second way is connected with the base of the triode through the resistor R1; the 13 pins of the N4 are grounded; the said Pin 14 of N4 is connected to the node of resistor R15 and resistor R16; pin 15 of N4 is divided into two paths, the first path is connected to the junction of resistor R15 and resistor R16 through resistor R8, and the second path is connected to the junction of resistor R15 and resistor R16 through capacitor C5. 3 pins; the power input end of the charging and discharging module is connected to the emitter of the triode T1, the power input end of the charging and discharging module is provided with a reverse diode D1, and the collector of the triode T1 is divided into two circuits , the first path is connected to the reverse diode D2, the second path is connected to one end of the resistor R20 through the inductor L1, the other end of the resistor R20 is the power output end of the charging and discharging module, and the resistor R12 is connected in parallel with the resistor R20; One end of R14 is connected to the power output of the charge-discharge module, and the other end is connected to pin 2 of the N4; one end of the capacitor C4 is grounded, and the other end is connected to the power output of the charge-discharge module; the power output of the charge-discharge module The end is provided with a pull-down resistor R19, and the other end of the pull-down resistor R19 is grounded sequentially through the resistor R10, the sliding rheostat VR1 and the resistor R17; pin 16 of the N4 is connected to the junction of the sliding rheostat VR1 and the resistor R17.