CN206147296U - Embedded MCU data acquisition module - Google Patents

Abstract

The utility model discloses an embedded MCU data acquisition module relates to data acquisition and measuring device technical field. Embedded MCU data acquisition module includes embedded ARM7 treater, UART serial interface module, USB data transmission interface module, data acquisition interface module, system reset circuit, SDRAM data memory and FLASF program memory. Data acquisition module can be equipped with guided missile operation element for the trouble sign that probably appears through the automatic data collection and processing analysis, can in time be discover to the missile launch car when carrying out duties and repair, seek the failure cause of production, also can be before the live shell be shootd, handle through data acquisition and analysis, confirm the technical state of missile launch car, normal missile launch task accomplished by this car will you please promptly.

Description

Embedded MCU data acquisition module

Technical field

The utility model is related to data acquisition and measurement apparatus technical field, more particularly to a kind of embedded MCU data are adopted Collection module.

Background technology

Command signal is to control missile flight until the core signal for hitting the mark, is to be related to battlebus to complete combat mission Key.Command signal is formed in guidance electronic box, the missile bearing that guidance electronic box is measured according to TV Goniometer The inclination angle signal measured with pitch angle deviation, angular-rate sensor and load car dipmeter, by governing equation pitching is calculated With driftage control instruction signal, laser transmitter is given after warp knit code, control instruction signal is sent by laser transmitter, control is led Maneuvering flight is played, until hitting the mark.At present, although the missile weapon system having is equipped with detection engineering truck, but missile measure The command signal correctness that engineering truck does not send to missile truck is detected, if not detecting to this signal, just not Can determine that whether missile truck is normal.

Additionally, in the training of army, throw-off practice is check army's training effect and armament systems overall performance one Individual important subject, and more than 20 seconds that the emission process of guided missile only a flash dies, in this course armament systems work is No normal, whether soldier's operation is correct, only relies on field observation, it is difficult to accurately judged, particularly recent army's live shell The process of MISSILE LAUNCHING operation failure (high fly bomb) in target practice training, due to the data without live real time record, technical staff Accident analysis and fault location are carried out, and implement technological improvement all cannot to carry out, so how in limited live-fire training, Collect substantial amounts of data message, and the evaluation of objective and fair carried out to this process, to improve Male Soldiers operative skill and The performance of armament systems is all very important.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of embedded MCU data acquisition module, the data Acquisition module can in time have found that it is likely that the failure symptom of appearance by automatic data acquisition and Treatment Analysis, search what is produced Failure cause, can also the army of improvement represent inspection and acceptance means, improve the efficiency and quality of equipment production.

To solve above-mentioned technical problem, technical solution adopted in the utility model is：A kind of embedded MCU data acquisition Module, it is characterised in that：The embedded MCU data acquisition module includes the processor of embedded-type ARM 7, UART serial interface mouth molds Block, USB data transmission interface module, data acquisition interface module, system reset circuit, SDRAM data storages and FLASF Program storage, the UART serial interface modules are bi-directionally connected with the processor of the embedded-type ARM 7, for realizing the number According to the data interaction of acquisition module and embedding assembly；USB data transmission interface module is double with the processor of the embedded-type ARM 7 To connection, for realizing the data interaction of data acquisition module and embedding assembly；The system reset circuit is embedded with described The reset terminal connection of formula ARM7 processor；The SDRAM data storages and FLASF program storages and the ARM7 process Device is bi-directionally connected, for storing related data；The input of the data acquisition interface module is sent out with guidance device and laser The signal output part connection of machine is penetrated, the output end of the data acquisition interface connects with the signal input part of the ARM7 processors Connect.

Further technical scheme is：The system reset circuit includes that chip U1, the chip U1 are used with I2C The power monitoring chip CAT1025JI-30 of storage, one end ground connection of reset switch, the other end is divided into two-way, the first via with it is described The 1 pin connection of U1, the second road Jing resistance R85 meet VDD, and 2 pin of the U1 are divided into two-way, and first via Jing resistance R67 meets VDD, the Two tunnels are the reset signal output end of the reset circuit, and the 3 pin Jing resistance R30 of the U1 are grounded, 4 pin and 7 pin of the U1 Ground connection, 5 pin of the U1 are divided into two-way, and first via Jing resistance R21 meets VDD, and the second tunnel connects with the SDA pins of the processor Connect；6 pin of the U1 are divided into two-way, and first via Jing resistance R20 meets VDD, and the second tunnel is connected with the SCL pins of the processor, 8 pin of the U1 meet VDD.

Further technical scheme is：The data acquisition interface module includes four SP3243E type serial port chips.

It is using the beneficial effect produced by above-mentioned technical proposal：The embedded MCU data acquisition module can be equipped with To missile operations unit, for missile truck when carrying out duties and repairing, by automatic data acquisition and Treatment Analysis, can be with The failure symptom of appearance is had found that it is likely that in time, searches the failure cause for producing；Also can before throw-off practice, by data acquisition and Analyzing and processing, confirms the state of the art of missile truck, i.e. can the car complete normal MISSILE LAUNCHING task.It is described embedded MCU data acquisition modules can also be used for inspection and acceptance and plant produced, the debugging and test of army's representative, can the representative inspection of the army of improvement Examination means, improve the efficiency and quality of equipment production.

Description of the drawings

The utility model is described in further detail with reference to the accompanying drawings and detailed description.

Fig. 1 is a kind of theory diagram of missile flying parameter tape deck；

Fig. 2 is the theory diagram of video sampling and compressing module；

Fig. 3 is the circuit theory diagrams of SAA7113H and FPGA connections；

Fig. 4 is the circuit theory diagrams of CPLD units；

Fig. 5 is the circuit theory diagrams of RS232 USB units；

Fig. 6 is the theory diagram of embedded MCU data acquisition module described in the utility model；

Fig. 7-8 is the schematic diagram of the power circuit that embedded MCU data acquisition module is used；

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

The circuit theory diagrams of Figure 10 lithium ion auto charge and discharge modules；

Specific embodiment

With reference to the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out clearly Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of the utility model protection.

Many details are elaborated in the following description in order to fully understand the utility model, but this practicality is new Type can also be different from alternate manner described here to implement using other, and those skilled in the art can be without prejudice to this reality With doing similar popularization in the case of new intension, therefore the utility model is not limited by following public specific embodiment.

As shown in figure 1, a kind of missile flying parameter tape deck is disclosed, including portable main machine, the portable master Machine include 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, it is preferred that the embedded computer is embedded using PC-104 types Computer.The signal output part of the TV angle-measuring equipment in missile truck respectively with video sampling and compressing module and embedded The signal of the signal input part connection of MCU data acquisition modules, missile truck midcourse guidance device and laser beam emitting device is defeated Go out end to be connected with the signal input part of the embedded MCU data acquisition module；The video sampling and compressing module and embedded The signal input part of formula MCU data acquisition module is connected with the signal input part of the embedded computer, the video acquisition Compression module is used to complete the digital collection of the analog video to the generation of missile truck TV angle-measuring equipment, compression and buffers Transmission, the bullet absolute altitude that the embedded MCU data acquisition module is used to complete to produce missile truck TV angle-measuring equipment is low The missile attitude control signal produced with azimuth angle deviation signal, guidance device, the laser command signal that laser transmitter is produced It is acquired, cache and transmits；The human-computer interaction module is bi-directionally connected with the embedded computer, and the lithium ion is automatic The power input of module of the charge-discharge modules by needing to power in the DC-DC power source conversion module and the portable main machine End connection, for providing working power for it.

Software includes：The BCB++2006 based on WINDOWS2000 systems run on PC-104 embedded computers is high Level program language exploitation software, and on ARM7 run based on uCOS-II embedded real time systems, compiled using ADS1.2 The C/C++ of environment exploitation and the embedded software of assembler language hybrid programming, and be based in Quartus II development environments The firmware of VHDL design languages exploitation configuration FPGA.

The tape deck can complete two major functions：

First, it is detection and fault diagnosis functions.I.e. in missile truck analog transmissions or System self-test, complete to leading Play that the TV angle-measuring equipment of car launcher produces bullet absolute altitude is low, azimuth angle deviation data carry out Real-time Collection, guidance device is produced Raw STT missile orientation, yaw data carry out Real-time Collection, and the laser command sent to laser transmitter carries out Real-time Collection, The analog video signal that TV angle-measuring equipment is produced is digitally converted, and carries out image procossing and bullet mark is other, passed through Whether the automatically derived MISSILE LAUNCHING command drcuit work of data analysis and process is normal.Can be entered in missile truck by this function When row duties are repaired, by the data for recording, the failure symptom of appearance can be in time had found that it is likely that, search the original of the failure for producing Cause；Also can be gathered by analyze data and analyzed and processed before practicing shooting in fact, the state of the art of missile truck can be confirmed, i.e., should Can car complete normal MISSILE LAUNCHING task.

Second, throw-off practice real-time data record and process playback function.I.e. the equipment has black box function, in reality During bullet is practiced shooting, the bullet absolute altitude that produces to the TV angle-measuring equipment of missile truck is low, azimuth angle deviation data, guidance device The STT missile orientation of generation, yaw data, the laser command data that laser transmitter sends carry out Real-time Collection storage, to electricity The analog video signal produced depending on angle-measuring equipment is digitally converted and Real-time Collection storage, after throw-off practice, can pass through Data are analyzed with the function such as process and playback, whole Missile Launching Process is reproduced.Data backtracking is capable of achieving by this function, Training achievement and army to evaluating MISSILE LAUNCHING improves level of training tool to have very important significance.

Wherein, PC-104 computers are adopted using the PCM-3370F-M0A1 embedded computer plates for grinding China650MHz Fanless processors and VT8606 the and VT82C686B chipsets of Weisheng, memory on board 256MB, the VGA/LCD controllers with shared drive and PC/104 and PC/104-Plus data/address bus, are equipped with IDE and connect The 40GB electric boards of mouth.

In order that equipment non-stop run in vehicle power and civil power (or generator power supply) handoff procedure, devises not Uninterruptible power.Lightweight, the high lithium ion battery of energy storage is designed with, and has devised power supply discharge and recharge automatic control module. Lithium ion automatic inflatable power supply module is made up of 6 section lithium ion batteries, charging/discharging voltage and electric current automatic control panel, and maximum can Voltage 25.2V is provided, maximum output current is 4.2A, and normal temperature rated capacity is 3.6AH.

DC-DC power source conversion module include two units, one be for PC-104 embedded computers, MCU single-chip microcomputers, regard Frequency capture card and data collecting card provide power supply, and this element adopts the XPWR104 HR- of the U.S. RTD for meeting PC/104 specifications 75W power modules, wide range input voltage 8-32VDC, output voltage 5V, 12V, peak power output：75W is super with output The functions such as load and short-circuit protection function, input filter, reversed polarity and overvoltage protection, its conversion efficiency is up to 92%；Another Unit is to provide power supply for liquid crystal display, is input into as 15-32VDC, output+12VDC, output-current rating 3A.

Touch human-computer interaction device's module is made up of liquid crystal display and touch screen unit.Liquid crystal display is selected Unit's PD064VT5 liquid crystal displays too, 6.4 inches of screen size, display resolution is 640 × R G B × 480, color 262, 144colors, provides that program interface shows and data and video acquisition analysis result show for testing equipment；Touch screen unit is adopted With the touch-screens of PenMount 95251, its interface is USB1.1, and equipment provides friendly human-computer interaction function.

The data logging plant also includes external removable data storage device module and external AC-DC power module, The external removable data storage device module is connected with the data transmission port of the embedded computer, the AC-DC The power input of power module is connected with the power output end of 220V civil powers or generator, the AC-DC power module it is defeated Go out end to be connected with the power input of the DC-DC power source conversion module.Additionally, the tape deck and being recorded between device Need to connect by video acquisition connection cable, car launcher power connection cable and special VGA vision cables.

External removable data storage device module, from the jumbo portable hard drives of USB interface 80GB, to detection, note The emission control data and video data that record and analysis are obtained are stored.External AC-DC power module, when system is not in guided missile Under car launcher connection, by the AC-DC power module galvanic current source is provided.Input voltage 220V AC, frequency 50HZ ± 5%, input current is 0.35A, output voltage 24V DC, output current 3A.

As shown in Fig. 2 the video sampling and compressing module includes digital video acquisition module, USB high speed data transfers The storage of unit, RS232 USB units, FPGA unit, CPLD units, static storage cell and non-volatile program is single Unit.The input of the digital video acquisition module is connected with the signal output part of TV angle-measuring equipment, and digital video is adopted The signal output part of collection module is connected with the signal input part of the FPGA unit, for completing video line, field synchronization control, with And A/D conversions；The USB high speed data transfers unit is bi-directionally connected with the FPGA unit, for completing the continuous field figure of video As transmission；The RS232 USBs unit is bi-directionally connected with the FPGA unit, for realizing the video acquisition pressure Contracting module carries out data communication with the embedded computer；The CPLD units are connected with the input of the FPGA unit, For completing to configure FPGA work schedules；The static storage cell is bi-directionally connected with the FPGA unit, for data buffering； The non-volatile program memory cell is connected with the input of the FPGA unit, for storing the journey that FPGA unit is used Sequence；The FPGA unit is used to complete the compression of video data, Interface Controller and data transfer, and video decompression and video are returned Put.

Video sampling and compressing module mainly completes the numeral of the analog video produced to missile truck TV angle-measuring equipment Change collection, compression and buffer transfer function.

Workflow is：After system power-on reset, CPLD reads the configurator section in FLASH, completes to carry out FPGA Configuration, the soft kernel of FPGA is started working, and has configured the register of SAA7113 as requested, and for SAA7113 on the sdram Two image data buffers are outputed, is that FPGA compression of images outputs on the sdram two image data buffers, be CY7C68013 is outputing two image data buffers (and the buffering area of FPGA compression of images is shared), after the completion of configuration, FPGA Soft kernel be waited for and monitor RS-232 serial port orders, wait and be connected to after self-inspection order, carry out module self-inspection concurrent The code for sending self-inspection good, when acquisition is connected to, by I²C buses write the register of SAA7113, start analog-to-digital conversion, enter Row digital image acquisition simultaneously writes buffering area, and after a field picture is gathered, the soft kernel of FPGA is read from the buffering area of SAA7113 Take view data and process is compressed to image, compression algorithm used is JEPG2000, is write after the completion of compression The buffering area of CY7C68013, the buffering area of CY7C68013 is write after a full field picture data, and FPGA sends out the data of this buffering area The FIFO of CY7C68013 is given, CY7C68013 packs view data, be sent to PC-104 computers.This process is constantly followed Ring.Image acquisition process stops after the soft kernel of FPGA is connected to stopping acquisition from RS-232 serial ports.

Main components are introduced

FPGA unit adopts surface mount packages EP2C20F484C8.Digital video acquisition module adopts PHILIPS Co.'s video Decoding chip SAA7113, SAA7113 are a kind of video decoding chips, and it can be input into 4 road analog video signals, by inside The different configurations of register can be changed to the input of 4 tunnels, and input can be 4 road CVBS or 2 road S-video (Y/C) signals, defeated Go out 8 " VPO " buses, be ITU 656, the YUV 4 of standard：2：2 forms.

SAA7113 compatibility PAL, NTSC, SECAM multiple types, 50 or 60Hz for being suitable for automatic detection field frequency, can be with Automatically switch between PAL, NTSC.7113 inside have a series of registers, be configurable to different parameters, to colourity, The control of brightness etc. is all that the read-write of register needs to be carried out by I2C buses by rewriting different values to corresponding registers.

The simulation of SAA7113 and numerical portion are powered using+3.3V, the compatible+5V of digital I/O interfaces, normal work When power consumption 0.4W, when idle be 0.07W.7113 need external 24.576MHz crystal, and inside has phaselocked loop (LLC), exportable The system clock of 27MHz.Chip has upper electric auto-reset function, separately there is external reset pin (CE), and low level resets, and resets Later output bus is changed into tri-state, recovers automatically after reset signal is uprised, and loss of clock, supply voltage reduce all causing core Piece automatically resets.7113 are QFP44 encapsulation, and the circuit theory diagrams of SAA7113H and FPGA connections are as shown in Figure 3.

Static storage cell：Use the two panels of the more MT48LC4M16 monolithics 4M × 16Bit of application at present Sdram is in parallel to form 32 bit strip width.Maximum is supported to MT48LC16M16 models SDRAM.It is outstanding using 36 pins during MT48LC4M16 Sky, is SA [12] using 36 pins during MT48LC16M16.

Non-volatile program memory cell：Use the Large Copacity nor types of the more Intel Companies of application at present flash 28F128J3,28F640J3,28F320J3.Maximum is supported to 32MB x 8bit.Wherein, EA24 is to extend 32M × 8Bit, EA23 are that, in order to extend 16M × 8Bit, pin EA22 is to meet 8M × 8Bit.

CPLD units：CPLD adopts MAXII series EPM570T100C5, and using CPLD FPGA configuration pins are controlled, from Take out in flash in the incoming FPGA of FPGA configurators and perform, its principle is as shown in Figure 4.

USB high speed data transfer units：From the CY7C68013 of Cypress Semiconductor companies, CY7C68013 belongs to that EZ-USB FX2 are serial, and EZ-USB FX2 are the microprocessors of first item integration USB 2.0 in the world, it It is integrated with USB2.0 transceivers, SIE (SIE), enhanced 8051 microcontroller and programmable peripheral interface.FX2 This originality structure can make data transmission rate reach 56Mbytes/s, the i.e. maximum bandwidth that USB2.0 is allowed.In FX2, intelligence Energy SIE can be with many USB1.1 and USB2.0 agreements of hardware handles, so as to the compatibility for reducing the development time He ensure that USB Property.GPIF (General Programmable Interface) and master/slave end points FIFO (8 or 16 bit data bus) are ATA, UTOPIA, EPP, PCMCIA and DSP etc. provide simple and seamless connection interface.

RS232 USB units：Serial port chip adopts the universal serial port chip SP3232ECP of SP, this chip Transmit while the RS232 data of achievable two passages, its schematic diagram is as shown in Figure 5.

Power circuit：Video sampling and compressing module needs two-way power supply, is all the way+3.3V, is all the way+1.2V, and design is adopted With line style regulated power supply LM1085, the input voltage of chip is+5V, by R3, R4 for exporting reference resistance in adjustment circuit, R5, R6, it is possible to obtain+3.3V and+1.2V is exported.The electric current of two-way output can reach 2A.

Embedded MCU data acquisition module is completed to leading using the RAM7 embedded MCUs and supporting peripheral circuit of PHILIP Play the low missile attitude control produced with azimuth angle deviation signal, guidance device of bullet absolute altitude that car launcher TV angle-measuring equipment is produced Signal, the laser command signal that laser transmitter is produced is acquired, caches and transfer function.

As shown in fig. 6, the utility model discloses a kind of embedded MCU data acquisition module, the embedded MCU data Acquisition module includes that the processor of embedded-type ARM 7, UART serial interface modules, USB data transmission interface module, data acquisition connect Mouth mold block, system reset circuit, SDRAM data storages and FLASF program storages.The UART serial interface modules with The processor of the embedded-type ARM 7 is bi-directionally connected, for realizing the data interaction of the data acquisition module and embedding assembly； USB data transmission interface module is bi-directionally connected with the processor of the embedded-type ARM 7, for realizing data acquisition module and being embedded in The data interaction that formula is calculated；The system reset circuit is connected with the reset terminal of the processor of the embedded-type ARM 7；The SDRAM Data storage and FLASF program storages are bi-directionally connected with the ARM7 processors, for storing related data；The number It is connected with the signal output part of guidance device and laser transmitter according to the input of acquisition interface module, the data acquisition connects The output end of mouth is connected with the signal input part of the ARM7 processors.

After operation principle system power-on reset, the processor of embedded-type ARM 7 reads journey from external program memory FLASH Sequence, initializes to system I/0 mouth, and USB port and UART mouths are initialized, and data acquisition port is initialized, point With data buffer zone (including TV angle measurement orientation, elevation bias data buffer zone, guided missile driftage, pitch control data buffering Area, input laser transmitter control instruction data buffer zone, laser output photoelectric translated data buffering area, in initialization system Interruptive port), system initialization terminates, and waits host computer to shake hands self-checking command after time delay, and sends system initialization to host computer Status command, now software in etc. state, and the instruction of UART serial ports is monitored, when receiving data acquisition preparation instruction Afterwards, each interruptive port is started, after interruptive port detection obtains the arming signal of missile truck, log-on data gathers sub- journey Sequence, starts USB data transmission subprogram, carries out data acquisition, buffering, transmission.When being connected to, the data acquisition that host computer sends is complete After Bi Zhiling, data acquisition, transmission procedure are exited, into holding state.

Main components：

The processor of embedded-type ARM 7：Using LPC2210 type arm processors, LPC2210 is based on a support real-time simulation With 16/32 ARM7TDMI-STM CPU of tracking.Having the application of strict control to code size can use 16 Thumb patterns Code size is reduced more than 30%, and property loss of energy very little.

Due to the 144 pin encapsulation of LPC2210, extremely low power consumption, multiple 32 bit timing devices, ADC, PWM output of 10,8 tunnel with And up to 9 external interrupts are make them particularly suitable for use in Industry Control, medical system, access control and electronic cash register (POS). By configuring bus, LPC2210 can at most provide 76 GPIO.Due to the built-in serial communication interface of wide scope, LPC2210 It is also admirably suitable for communication gate, protocol converter, embedded software modem and other various types of applications.

External memory chip SDRAM and FLASH：

Because LPC2210 does not have internal program memory, data storage is also less, therefore, data acquisition module is extended Two external memory storages, one is NOR FLASH program storages, and one is PSRAM data storages, and program storage is selected The SST39V160 of the monolithic 2MB of 16 BITBUS network interfaces, data storage is from the monolithic 8MB's of 16 BITBUS network interfaces MT45W4M16.(address bus and data are total using the external data bus of RAM for external program memory and data storage Line).

It is the very high USB device of a cost performance that USB data transmission interface module adopts PDIUSBD12, PDIUSBD12, It is typically used as in micro controller system the High Speed General parallel interface for realizing being communicated with microcontroller, and it is also supported locally DMA transfer.

UART serial interface modules：SP3232E series is the low energy-consumption electronic device of 2 driver/2 receivers, SP3232E Series has an efficient charge pump, and operating voltage only needs 0.1 μ F electric capacity to be operated when being 3.3V.Charge pump is allowed SP3232E series sends the signal for meeting RS-232 under certain voltage in 3.3V to 5.0V.

Power circuit：Circuit on embedded MCU data acquisition module needs the two groups of power supplys, I/O mouth power supplies to be 3.3V, kernel and the inside and outside power supply that sets are as 1.8V.In order that system power supply is stable, module-external is powered and is set to 12V, First 12V external power sources are down to into 5V using Switching Power Supply voltage stabilizing chip LM2575, then 5V power supplys are passed through into two low voltage difference power supplys Chip SPX1117M3-3.3 and SPX1117M3-3.3 are changed into 3.3V and 1.8V.SPX1117 has very low quiescent current, is completely bearing Its low voltage difference is only 1.1V during load, as shown in Figs. 7-8.

As shown in figure 9, the system reset circuit includes that chip U1, the chip U1 use the power supply with I2C storages Monitoring chip CAT1025JI-30, one end ground connection of reset switch, the other end is divided into two-way, and the first via connects with 1 pin of the U1 Connect, the second road Jing resistance R85 meet VDD, 2 pin of the U1 are divided into two-way, and first via Jing resistance R67 meets VDD, and the second tunnel is described The reset signal output end (the nRST pins of this termination RAM, the voltage-reset signal of generation) of reset circuit, 3 pin of the U1 Jing resistance R30 is grounded, and 4 pin of the U1 and 7 pin are grounded, and 5 pin of the U1 are divided into two-way, and first via Jing resistance R21 meets VDD, Second tunnel is connected with the SDA pins of the processor；6 pin of the U1 are divided into two-way, and first via Jing resistance R20 meets VDD, and second Road is connected with the SCL pins of the processor, and 8 pin of the U1 meet VDD.

Data acquisition interface module：Output signal high level+12V, the low level -12V of missile truck, therefore to carry out Data acquisition, it is necessary to carry out level conversion.

Data acquisition level shifting circuit, uses the SP3243E of serial port chip series, but has only used its reception Mouthful, SP3243E is a 3 driver/5 receiver devices.

Because system needs collection 20 road signals of collection, it is therefore desirable to 4 each same devices, it is divided into data acquisition mouth 1, number According to acquisition port 2, data acquisition mouth 3, data acquisition mouth 4.

As shown in Figure 10, the lithium ion auto charge and discharge module includes the integrated control chip of PWM-type Switching Power Supply N4, the N4 use KA7500B, and 1 pin of the N4 is divided into two-way, first via Jing resistance R10 ground connection, the second road Jing resistance R9 with The Node connectedness of resistance R20 and inductance L1；2 pin of the N4 are divided into two-way, and 3 pin of the first via Jing electric capacity C3 and N4 connect Connect, successively Jing resistance R15, resistance R16 and light emitting diode H1 are grounded on the second tunnel；The 4 pin Jing resistance R21 ground connection of the N4； The 5 foot meridian capacitor C2 ground connection of the N4；The 6 pin Jing resistance R4 ground connection of the N4；The 7 pin ground connection of the N4；8 pin of the N4 with The 11 pin connection of the N4；The 9-10 pin ground connection of the N4；The 11 pin Jing resistance R2 of the N4 are connected with the base stage of triode T1； 12 pin of the N4 are divided into two-way, and the first via is connected with the emitter stage of triode T1, the base of the second road Jing resistance R1 and triode Pole connects；The 13 pin ground connection of the N4；The node of the 14 pin connecting resistance R15 and resistance R16 of the N4；15 pin of the N4 are divided into The node of two-way first via Jing resistance R8 connecting resistances R15 and resistance R16, the second road Jing electric capacity C5 connect 3 pin of the N4.

The power input of the charge-discharge modules is connected with the emitter stage of the triode T1, the charge-discharge modules Power input is provided with backward dioded D1, and the colelctor electrode of the triode T1 is divided into two-way, the first via and backward dioded D2 Connection, the second road Jing inductance L1 is connected with one end of resistance R20, and the other end of resistance R20 is the power supply of the charge-discharge modules Output end, resistance R12 is in parallel with the resistance R20；One end of resistance R14 connects with the power output end of the charge-discharge modules Connect, the other end is connected with 2 pin of the N4；One end ground connection of electric capacity C4, the other end connects with the power output end of charge-discharge modules Connect；The power output end of charge-discharge modules is provided with pull down resistor R19, the other end of pull down resistor R19 Jing resistance R10, cunning successively It is grounded after dynamic rheostat VR1 and resistance R17；16 pin of the N4 connect the node of the slide rheostat VR1 and resistance R17.

The integrated circuit KA7500B that Li-ion batteries piles charge-discharge circuit is adopted is the special pulsewidth that Samsung produces Modulated switching power supply integrated manipulator.

Battery pack using 6 section 4.2V lithium ion batteries be in series, its maximum output current be 4.2A, the maximum of output Voltage is 25.2V.

Its charge-discharge circuit schematic diagram (only gives the charge-discharge circuit of a Battery pack, other 5 groups of circuits as shown in Figure 10 It is identical).

It carries two-way feedback circuit, is current feedback and Voltage Feedback, wherein the positive and negative electrode correspondence of current feedback KA7500B the 1st, 2 pin, output current produces a pressure drop on resistance R12 and R20, and the pressure drop Jing R9, R10 and R14, R15 are electric Resistance feedback is returned, and when the 1st pin voltage of KA7500B is more than the 2nd pin voltage, KA7500B can reduce output pulse width (the 8th, 11 Pin), reduce electric current, otherwise increase pulsewidth, constant output current is made in preset value, its constant current value meets below equation：

In formula R be R12 and R20 it is in parallel after resistance, therefore constant current value in theory calculated value be 735mA.

The positive and negative electrode correspondence KA7500B of the Voltage Feedback in circuit the 16th, 15 pin, after the power-up, the of KA7500B 14 pin export stable 5V voltages, and the voltage makes LED light, as power supply instruction, while the 5V voltages are carried as reference voltage Supply KA7500B 15 pin as voltage reference, output voltage after R19, R10, VR1 and R17 partial pressure, with voltage reference ratio Compared with, when voltage is too big, then reduce pulsewidth, it is too little, increase pulsewidth, it is allowed to keep constant output voltage values, its is defeated

Go out magnitude of voltage and meet following equation：

Because the two-way of KA7500B is fed back inside it is controlled again after phase "AND", therefore works as output voltage During less than constant pressure value, current feedback plays control action, and after output voltage reaches constant pressure value, Voltage Feedback plays control action, this Sample circuit just completes constant current/constant voltage control function, and its principle is just the same with the operation principle of voltage-stabilized power supply, simply the circuit For Switching Power Supply control mode, therefore efficiency high, temperature rise is low.

DC-DC power source conversion module：

DC-DC power source conversion module selects two kinds of power modules, and one is for PC-104 computers, MCU single-chip microcomputers, video Capture card and data collecting card provide power supply, and this element adopts the XPWR104 HR-75W of the U.S. RTD for meeting PC/104 specifications Power module, wide range input voltage 8-32VDC, output voltage 5V, 12V, peak power output：75W, with output excess load And short-circuit protection function, the function such as input filter, reversed polarity and overvoltage protection, its conversion efficiency is up to 92%；Another unit It is to provide power supply for liquid crystal display, is input into as 15-32VDC, output+12VDC, output-current rating 3A.

Need for 24VDC to switch to 12VDC to the power module that LCD monitor is powered, electric current is 3.0A.Therefore, select The PH50S24-12 DC/DC 24-12/50W power modules of Japanese LAMBDA, its reliable operation, good environmental adaptability installs letter It is single.

Human-computer interaction device's module：Including LCDs and pressure sensitivity touch-screen.Liquid crystal display from unit too PD064VT5 liquid crystal displays, 6.4 inches of screen size, display resolution be 640 × R G B × 480, color 262, 144colors, provides that program interface shows and data and video acquisition analysis result show for testing equipment；Touch-screen is adopted The touch-screens of PenMount 95251, its interface is USB1.1, and equipment provides friendly human-computer interaction function.

External removable data storage device module：From the GMHD-80 portable hard drives of Samsung.

External AC-DC power module：From the CDA330-220T12+24/150W AC/DC Switching Power Supplies of Nanjing roc figure.

The data logging plant can be installed to missile operations unit, for missile truck when duties repairing is carried out, By automatic data acquisition and Treatment Analysis, the failure symptom of appearance can be in time had found that it is likely that, search the failure cause for producing； Also, by Data acquisition and issuance process, the state of the art of missile truck can be confirmed before throw-off practice, i.e. can the car complete Into normal MISSILE LAUNCHING task.

The data logging plant can also be used in throw-off practice training process, to MISSILE LAUNCHING overall process and guided missile The related data of control instruction carry out Real-time Collection storage, and carry out later stage playback, analysis, judge guided missile in Missile Launching Process Whether the work of car launcher is normal.Also can be recalled by data, the training achievement of MISSILE LAUNCHING is analyzed and evaluated, to improve Military training level.

The data logging plant can also be used for inspection and acceptance and plant produced, the debugging and test of army's representative, can improve Army represents inspection and acceptance means, improves the efficiency and quality of equipment production.

Claims (3)

1. a kind of embedded MCU data acquisition module, it is characterised in that：The embedded MCU data acquisition module includes embedded Formula ARM7 processor, UART serial interface modules, USB data transmission interface module, data acquisition interface module, system reset electricity At road, SDRAM data storages and FLASF program storages, the UART serial interface modules and the embedded-type ARM 7 Reason device is bi-directionally connected, for realizing the data interaction of the data acquisition module and embedding assembly；USB data transmission interface mould Block is bi-directionally connected with the processor of the embedded-type ARM 7, for realizing the data interaction of data acquisition module and embedding assembly； The system reset circuit is connected with the reset terminal of the processor of the embedded-type ARM 7；The SDRAM data storages and FLASF program storages are bi-directionally connected with the ARM7 processors, for storing related data；The data acquisition interface module Input be connected with the signal output part of guidance device and laser transmitter, the output end of the data acquisition interface and institute State the signal input part connection of ARM7 processors.

2. embedded MCU data acquisition module as claimed in claim 1, it is characterised in that：The system reset circuit includes Chip U1, the chip U1 use the power monitoring chip CAT1025JI-30 with I2C storages, a termination of reset switch Ground, the other end is divided into two-way, and the first via is connected with 1 pin of the U1, and the second road Jing resistance R85 connect VDD, 2 pin point of the U1 For two-way, first via Jing resistance R67 meets VDD, and the second tunnel is the reset signal output end of the reset circuit, 3 pin of the U1 Jing resistance R30 is grounded, and 4 pin of the U1 and 7 pin are grounded, and 5 pin of the U1 are divided into two-way, and first via Jing resistance R21 meets VDD, Second tunnel is connected with the SDA pins of the processor；6 pin of the U1 are divided into two-way, and first via Jing resistance R20 meets VDD, and second Road is connected with the SCL pins of the processor, and 8 pin of the U1 meet VDD.

3. embedded MCU data acquisition module as claimed in claim 1, it is characterised in that：The data acquisition interface module Including four SP3243E type serial port chips.