An automatic detection system for the integrated electronic information system of armored vehicles

Abstract

The present invention discloses an automatic detection system for an armored vehicle integrated electronic information system, which is mainly composed of an analog control box, a switch control box, a power distribution output control box, a programmable high-power DC voltage-stabilized power supply, an electronic load, a test cable and an installation cabinet, wherein the power distribution output control box includes a relay board, an automotive relay, a wiring terminal, and a power distribution output indicator light. Aiming at the problems existing in the debugging and inspection of the existing vehicle integrated electronic information system, the present invention designs an automatic detection system for a systematic vehicle integrated electronic information system, and aims at the intelligent power distribution management and control of the vehicle integrated electronic information system, by designing a power distribution output control box, each power distribution output of the vehicle integrated electronic information system can be connected to the electronic load through the power distribution output control box, and through bus control, each can perform automatic detection of overcurrent alarm, overcurrent protection, overvoltage alarm, overvoltage protection and short-circuit protection according to the designed parameters.

Description

Technical Field

[0001] The invention relates to the field of vehicle detection, in particular to the detection of vehicle integrated electronic information systems. Background Art

[0002] The vehicle integrated electronic information system is an electrified control system for the entire armored vehicle, including electrical system control, electrical equipment power distribution management, signal acquisition and processing, operating condition display, vehicle-to-vehicle interconnection and navigation. For example, the patent document with application number 201910678848.2 discloses a vehicle integrated management and control system, including a processor, a communication module, and a signal acquisition module, which can process data at high speed and control the vehicle and on-board equipment.

[0003] The existing vehicle integrated electronic information system has many control equipment routes, complex control logic, high system correlation, and the power distribution output has technical characteristics such as intelligent power distribution management and protection. With the mass production of vehicle integrated electronic information systems, higher requirements will be placed on production debugging and inspection personnel. Because vehicle integrated electronic information systems are mainly used in special vehicles, the current batch production debugging and inspection are mainly carried out through simple power supplies, control switches, electronic loads, signal generators and other different instruments and tooling. There are cyclic line changes, wiring, instrument replacement, and multiple people working together to complete the debugging and inspection of a set of vehicle integrated electronic information systems. It has the defects of cumbersome operation, heavy workload, and low efficiency, and higher operating requirements are required for production debugging and inspection personnel.

[0004] The patent document with publication number 201720255142.1 discloses a vehicle integrated electronic information debugging system, which includes a mission terminal, a CAN bus, a power compartment acquisition controller, a passenger compartment acquisition controller, a test / simulation switch group, a power compartment simulated load and signal tooling, a passenger compartment simulated load and signal tooling, a test adapter module and a main control computer. The system adopts a closed-loop control strategy and bus communication technology, and mainly achieves the construction of an operating training environment consistent with the actual installation, which solves the problems of lack of training methods, high cost and low efficiency of vehicle integrated electronic information systems, and is of great significance to the formation of combat capability and support capability of new equipment. However, it does not involve specific detection circuits and how to detect.

[0005] The patent document with the publication number of 201710156145.4 discloses a portable rapid detection device for a vehicle integrated electronic information system, the detection device includes a chassis and a detection device, the detection device includes a keyboard module, the keyboard module is connected to the industrial control mainboard via a serial interface; the display module is bidirectionally connected to the industrial control mainboard; the touch panel is connected to the industrial control mainboard via a serial interface, which is used to output control commands and display test data; the digital multimeter module is connected to the industrial control mainboard via a serial interface, which is used to collect the output DC voltage of the device under test; the intelligent adapter is connected to the industrial control mainboard via a serial interface, which is used to realize the signal acquisition and control function between the device under test and the detection device; the detection device realizes the synchronous acquisition and processing of multiple parameters of the vehicle integrated electronic information system, and provides an effective technical means for the field rapid diagnosis of the system. However, this patent is mainly for the consideration of portability and rapid detection, without considering the design of power distribution, and it is impossible to achieve automatic detection of overcurrent alarm, overcurrent protection, overvoltage alarm, overvoltage protection and short circuit protection for each circuit according to the designed parameters. Summary of the invention

[0006] The main technical problem to be solved by the present invention is to realize the intelligent distribution management and protection automatic detection function of the distribution output of the vehicle integrated electronic information system, and complete the automatic detection of other functions of the vehicle integrated electronic information.

[0007] The present invention solves the above technical problems through the following technical means: an automatic detection system of an armored vehicle integrated electronic information system, mainly composed of an analog control box, a switch control box, a power distribution output control box, a programmable high-power DC regulated power supply, an electronic load, a test cable and an installation cabinet. The analog control box, the switch control box and the power distribution output control box are interconnected through one isolated CAN bus, and all data are connected to a computer through another isolated CAN bus after being processed by the analog control box. The power distribution output control box is connected to the electronic load through an RS232 serial port to achieve a point-to-point communication connection, which is used to control the power regulation of the electronic load and complete the output automation detection. The analog control box is connected to the programmable high-power DC regulated power supply through another RS232 serial port to achieve a point-to-point communication connection, which is used to realize the automatic voltage regulation of the programmable high-power DC regulated power supply;

[0008] The power distribution output control box includes a relay board, an automobile relay, a wiring terminal, and a power distribution output indicator light. The relay board includes a single-chip microcomputer circuit, a power supply circuit, and a relay drive circuit. The power supply circuit and the relay drive circuit are connected to the single-chip microcomputer circuit. The power supply circuit is externally connected to a power supply. The single-chip microcomputer circuit is connected to the analog quantity control box through a CAN bus. The relay drive circuit is connected to the automobile relay. The main contacts of the automobile relay are connected to a device under test. The power distribution output indicator light is connected between the connecting lines of the automobile relay and the device under test. The single-chip microcomputer circuit is connected to an electronic load through an RS232 circuit.

[0009] In view of the problems existing in the debugging and inspection of the existing vehicle integrated electronic information system, the present invention designs a systematic vehicle integrated electronic information system automatic detection system, realizes the automatic detection of the vehicle integrated electronic information system through computer-controlled automatic detection platform, and aims at the intelligent power distribution management and control of the vehicle integrated electronic information system, by designing a power distribution output control box, each power distribution output of the vehicle integrated electronic information system can be connected to the electronic load through the power distribution output control box, and through bus control, each power distribution output can perform over-current alarm, over-current protection, over-voltage alarm, over-voltage protection and short-circuit protection automatic detection according to the designed parameters.

[0010] As a further specific scheme, the relay drive circuit includes an optocoupler TLP291, resistors R1, R2, R3, a diode V1, a MOSFET tube Q1, and a capacitor C1. The signal input end of the optocoupler is connected to the single-chip computer circuit, the power supply end of the optocoupler is connected to VDD28 and the cathode of the diode V1 through the resistor R1, and the signal output end of the optocoupler is connected to the gate of the MOSFET tube Q1. At the same time, the signal output end of the optocoupler is grounded through the parallel resistor R3 and the capacitor C1, the source of the MOSFET tube Q1 is grounded, the drain of the MOSFET tube Q1 is connected to the anode of the diode V1, and the connection point serves as the output end of the relay drive circuit and is connected to the automotive relay.

[0011] As a further specific solution, the host software of the computer uses the USBCAN device to control the signal output and analog signal acquisition of the analog control box through the CAN bus, and interacts the signal with the device under test through the connecting terminals. In addition, the RS232 serial port communication built into the analog control box is connected to the programmable high-power DC regulated power supply, and instructions are sent to the analog control box through the host software, and then sent to the programmable high-power DC regulated power supply through the RS232 serial port to achieve voltage regulation of the programmable high-power DC regulated power supply; the host software controls the analog control box through the platform interconnection CAN bus, and the analog control box then controls the switch control box to output the switch signal through the interconnection communication CAN bus, and interacts the signal with the device under test through the connecting terminals. The host software controls the analog control box through the platform interconnection CAN bus, and the analog control box controls the distribution output control box through the interconnection communication CAN bus to achieve distribution output load channel selection, and then controls the electronic load through the RS232 serial port of the distribution output control box to complete the distribution output current protection function detection and debugging.

[0012] As a further specific solution, the analog quantity control box is mainly composed of an analog quantity control board, a decimal resistance box, a switching switch, a power switch, and a wiring terminal;

[0013] The analog quantity control board includes a single chip microcomputer, 12 analog voltage output circuits, 8 analog voltage detection circuits, 4 CAN communication circuits, 2 CAN communication control circuits, 4 vehicle speed pulse circuits, and 2 analog resistance output circuits;

[0014] One end of the first CAN communication circuit is connected to the single-chip microcomputer, and the other end is connected to the computer. One end of the second and third CAN communication circuits are connected to the single-chip microcomputer, and the other ends are used as CAN device interconnection interfaces and CAN switch control box interconnection interfaces respectively. One end of the fourth CAN communication circuit is connected to the single-chip microcomputer, and the other end is used as a CAN terminal interconnection interface. The 2 CAN communication control circuits are control circuits of the second and third CAN communication circuits respectively. One end of the 2 CAN communication control circuits is connected to the single-chip microcomputer, and the other ends are used as CAN device interconnection buses respectively. One end of the vehicle speed pulse circuit, the analog voltage output circuit, the analog voltage detection circuit, and the analog resistance output circuit are all connected to the single-chip microcomputer. The other end of the 4 vehicle speed pulse circuits is used as a pulse signal output interface, the other end of the analog voltage output circuit is used as a voltage signal output interface, the other end of the analog voltage detection circuit is used as a voltage detection interface, and the other end of the analog resistance output circuit is used as a resistance signal output interface. The decimal resistance box is connected to the analog resistance output circuit as one end of the resistance signal output interface through a switching switch. The external power supply is connected to the power supply circuit through the power switch, and is converted to the single-chip microcomputer power supply voltage through the power supply circuit for chip power supply.

[0015] As a further specific scheme, each analog voltage output circuit includes an operational amplifier LM2904, a diode D26, resistors R58, R60, R62, R64, capacitors C43, C44, and C50, one end of the resistor R58 is connected to the single-chip microcomputer, and the other end is connected to the positive input terminal of the operational amplifier, the cathode of the diode D2 is connected to VDD5, and the anode is connected to the positive input terminal of the operational amplifier, the reverse input terminal of the operational amplifier is grounded through a resistor R62, and the reverse input terminal of the operational amplifier is connected to the output terminal of the operational amplifier through a parallel resistor R64 and capacitor C52, the power supply terminal of the operational amplifier is connected to VDD12, and the power supply terminal of the operational amplifier is grounded through parallel resistors C43 and C44, one end of the resistor R60 is connected to the output terminal of the operational amplifier, and the other end is connected to the device under test as a voltage signal output interface, and the other end of the resistor R60 is grounded through a capacitor C50.

[0016] As a further specific solution, each analog voltage detection circuit includes an operational amplifier LM2904D, diodes D4, D6, resistors R13, R15, R17, capacitors C6, C2. One end of the resistor R13 is connected to the device under test as a voltage detection interface, and the other end is connected to the positive input end of the operational amplifier. The cathode of the diode D4 is connected to VDD5, and the anode is connected to the positive input end of the operational amplifier. The positive input end of the operational amplifier is grounded through parallel resistors R17 and C6. The reverse input end of the operational amplifier is connected to the output end of the operational amplifier, and the power supply end of the operational amplifier is connected to VDD5. One end of the resistor R15 is connected to the output end of the operational amplifier, and the other end is connected to the single-chip computer. At the same time, the other end of the resistor R15 is grounded through the capacitor C2. The anode of the diode D6 is connected to the other end of the resistor R15, and the cathode is connected to VA3.3.

[0017] As a further specific solution, the analog resistance output circuit has two fixed resistance outputs.

[0018] As a further specific scheme, the vehicle speed pulse circuit includes a Darlington tube U4 and an optocoupler TLP281-4. The four pulse signal ports of the single-chip microcomputer are respectively connected to the four input ports of the Darlington tube U4, and the four output ports of the Darlington tube U4 are respectively connected to the input end of each optocoupler in the optocoupler TLP281-4, and the output end of each optocoupler in the optocoupler TLP281-4 is connected to the device under test, and the power supply end of each optocoupler in the optocoupler TLP281-4 is connected to the device under test.

[0019] As a further specific solution, the CAN communication control circuit includes 2 paths, each of which includes a relay, a diode connected in parallel with the relay, and a double-pole double-throw switch connected to the relay.

[0020] As a further specific scheme, the switch quantity control box is mainly composed of a switch quantity control board and wiring terminals. The switch quantity control board includes a single-chip microcomputer, a power supply circuit, a CAN2 / 3 communication circuit, a switch quantity upper and lower limit control circuit and 96 groups of switch quantity output circuits, wherein the power supply circuit, the CAN2 / 3 communication circuit, the switch quantity upper and lower limit control circuit and the 96 groups of switch quantity output circuits are all connected to the single-chip microcomputer, the power supply circuit is externally connected to a 28V power supply, the single-chip microcomputer is connected to the analog quantity control box through the CAN2 / 3 communication circuit, and the output ends of the 96 groups of switch quantity output circuits are connected to the switch quantity control box wiring terminals;

[0021] The switch level upper limit control circuit includes diodes D1, D3, capacitors C13, C15, C17, C22, inductor L2, resistors R125 and R127 and power chip U18, wherein the power chip U18 model is LM2576HVS-ADJ, capacitors C13, C15, C17 and diode D1 are connected in parallel between port 1 of power chip U8 and ground, port 1 of power chip U8 is connected to VDD, port 2 of power chip U8 is connected to the cathode of diode D3 and the resistor R127. One end of the inductor L2 and the anode of the diode D3 are grounded, and the other end of the inductor L2 is grounded through the capacitor C22 and through the series-connected resistors R125 and R127. At the same time, the other end of the inductor L2 serves as the upper limit circuit output terminal VH_DOWN, and the port 4 of the power chip U8 is connected to the node between the resistors R125 and R127. By adjusting the resistance values ​​of the resistors R125 and R127, the output voltage can be adjusted. The principle of the switch lower limit control circuit is exactly the same as the switch upper limit control circuit.

[0022] The advantages of the present invention are: in view of the problems existing in the debugging and inspection of the existing vehicle integrated electronic information system, a systematic vehicle integrated electronic information system automatic detection system is designed, and the automatic detection of the vehicle integrated electronic information system is realized through a computer-controlled automatic detection platform, and the intelligent power distribution management and control of the vehicle integrated electronic information system are targeted. By designing a distribution output control box, each power distribution output of the vehicle integrated electronic information system can be connected to the electronic load through the distribution output control box, and through bus control, each can perform over-current alarm, over-current protection, over-voltage alarm, over-voltage protection and short-circuit protection automatic detection according to the designed parameters, and through bus control, each power distribution output can perform rated load automatic detection according to the designed parameters, and check whether the power distribution output sampling and display of the vehicle integrated electronic information system meet the technical requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the principle block diagram of the vehicle integrated electronic information system automatic detection system;

[0024] Figure 2It is the block diagram of the connection principle between the analog control box and the computer;

[0025] Figure 3 It is the analog voltage signal output circuit diagram;

[0026] Figure 4 It is the voltage detection circuit diagram;

[0027] Figure 5 It is the circuit diagram of analog resistance output;

[0028] Figure 6 It is the vehicle speed pulse circuit diagram;

[0029] Figure 7 It is the CAN communication circuit diagram;

[0030] Figure 8 This is the principle block diagram of the switch quantity control board;

[0031] Fig. 9 It is the upper and lower limit control circuit diagram of the switch quantity;

[0032] Fig.10 It is the circuit diagram of switch output;

[0033] Fig.11 This is the principle block diagram of the power distribution output control box;

[0034] Fig.12 It is the relay drive circuit diagram;

[0035] Fig.13 It is the automatic test flow chart of the present invention. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1 As shown, the vehicle integrated electronic information system automatic detection system of the present invention is mainly composed of an analog control box, a switch control box, a power distribution output control box, a programmable high-power DC regulated power supply, an electronic load, a test cable and an installation cabinet.

[0038] The vehicle integrated electronic information system automated detection system has CAN communication function. The analog quantity control box, the switch quantity control box and the power distribution output control box are interconnected through one isolated CAN bus. All data are connected to the computer through another isolated CAN bus after being processed by the analog quantity control box. The power distribution output control box is connected to the electronic load through one RS232 serial port to realize point-to-point communication connection, which is used to control the power regulation of the electronic load and complete the output automation detection. The analog quantity control box is connected to the programmable high-power DC regulated power supply through another RS232 serial port to realize point-to-point communication connection, which is used to realize the automatic voltage regulation of the programmable high-power DC regulated power supply and complete the automatic realization of power supply characteristics.

[0039] The computer's host software uses the USBCAN device to control the signal output and analog signal acquisition of the analog control box through the CAN bus, and interacts the signal with the device under test through the connection terminal, thereby achieving the purpose of analog information detection and debugging of the device under test. In addition, the RS232 serial port communication built into the analog quantity control box is connected to the programmable high-power DC regulated power supply, and the host computer software sends instructions to the analog quantity control box, and then sends them to the programmable high-power DC regulated power supply through the RS232 serial port, so as to realize the voltage regulation of the programmable high-power DC regulated power supply; the host computer software controls the analog quantity control box through the platform interconnection CAN bus (CAN1), and the analog quantity control box controls the switch quantity control box to output the switch quantity signal through the interconnection communication CAN bus (CAN2 / 3), and the signal interacts with the device under test through the connection terminal, so as to achieve the purpose of detecting and debugging the switch quantity information of the device under test; the host computer software controls the analog quantity control box through the platform interconnection CAN bus (CAN1), and the analog quantity control box controls the distribution output control box through the interconnection communication CAN bus (CAN2) to realize the distribution output load channel selection, and then controls the electronic load through the RS232 serial port of the distribution output control box to complete the detection and debugging of the distribution output current protection function.

[0040] The circuit design of the analog control box is described in detail below with reference to the accompanying drawings.

[0041] See also Figure 2 As shown, it is a block diagram of the connection principle between the analog quantity control box and the computer. The analog quantity control box is mainly composed of an analog quantity control board, a decimal resistance box, a switching switch, a power switch, wiring terminals, etc.

[0042] The analog quantity control board is the main executive component for automatic debugging and detection of analog signals, including a single chip microcomputer, 12 analog voltage output circuits, 8 analog voltage detection circuits, 4 CAN communication circuits, 2 CAN communication control circuits, 4 vehicle speed pulse circuits, and 2 analog resistance output circuits.

[0043] One end of the first CAN communication circuit is connected to the single-chip microcomputer, and the other end is connected to the computer. One end of the second and third CAN communication circuits is connected to the single-chip microcomputer, and the other end is used as the CAN device interconnection interface and the CAN switch control box interconnection interface respectively. One end of the fourth CAN communication circuit is connected to the single-chip microcomputer, and the other end is used as the CAN terminal interconnection interface. The 2 CAN communication control circuits are the control circuits of the second and third CAN communication circuits respectively. One end of the 2 CAN communication control circuits is connected to the single-chip microcomputer, and the other end is used as the CAN device interconnection bus respectively. The 2 CAN communication control circuits control the CAN communication of the device under test, which is used to simulate the device bus being broken, and the device can still maintain the state without abnormal functions. The first and fourth CAN communication circuits do not need to be controlled. One end of the vehicle speed pulse circuit, the analog voltage output circuit, the analog voltage detection circuit, and the analog resistance output circuit are all connected to the single-chip microcomputer. The other end of the 4 vehicle speed pulse circuits is used as a pulse signal output interface, the other end of the analog voltage output circuit is used as a voltage signal output interface, the other end of the analog voltage detection circuit is used as a voltage detection interface, and the other end of the analog resistance output circuit is used as a resistance signal output interface. The decimal resistance box is connected to the analog resistance output circuit as one end of the resistance signal output interface through a switching switch. The external power supply is connected to the power supply circuit through the power switch and converted to the microcontroller power supply voltage by the power supply circuit for chip power supply.

[0044] The analog quantity control box mainly completes 12-way analog voltage signal output, 8-way analog voltage detection, 4-way analog resistance output, 4-way pulse signal output, and 4-way CAN communication signal on-off control automatic debugging and detection functions. At the same time, the analog quantity control box is equipped with a decimal resistance box and a switching switch, which can realize the adjustment of any value of the resistance signal.

[0045] Further reading Figure 3 , taking one of them as an example, each analog voltage output circuit includes an operational amplifier LM2904, a diode D26, resistors R58, R60, R62, R64, capacitors C43, C44, and C50. One end of the resistor R58 is connected to the single-chip microcomputer, and the other end is connected to the positive input end of the operational amplifier. The cathode of the diode D2 is connected to VDD5, and the anode is connected to the positive input end of the operational amplifier. The reverse input end of the operational amplifier is grounded through the resistor R62, and the reverse input end of the operational amplifier is connected to the output end of the operational amplifier through the parallel resistor R64 and capacitor C52. The power supply end of the operational amplifier is connected to VDD12, and the power supply end of the operational amplifier is grounded through the parallel resistors C43 and C44. One end of the resistor R60 is connected to the output end of the operational amplifier, and the other end is connected to the device under test as a voltage signal output interface. At the same time, the other end of the resistor R60 is grounded through the capacitor C50.

[0046] The analog voltage signal output circuit mainly realizes the voltage signal excitation of the vehicle integrated electronic information system. It uses the DAC port of the microcontroller to output an adjustable analog voltage signal, which is then amplified by the operational amplifier LM2904 and output to the receiving port of the device under test. The output voltage amplitude is adjustable within the range of DC0.5V to DC7.2V, with an error of ±0.01V.

[0047] Further reading Figure 4 , taking one of them as an example, each analog voltage detection circuit includes an operational amplifier LM2904D, diodes D4, D6, resistors R13, R15, R17, capacitors C6, C2. One end of the resistor R13 is connected to the device under test as a voltage detection interface, and the other end is connected to the positive input of the operational amplifier. The cathode of the diode D4 is connected to VDD5, and the anode is connected to the positive input of the operational amplifier. The positive input of the operational amplifier is grounded through parallel resistors R17 and C6. The reverse input of the operational amplifier is connected to the output of the operational amplifier. The power supply of the operational amplifier is connected to VDD5. One end of the resistor R15 is connected to the output of the operational amplifier, and the other end is connected to the single-chip computer. At the same time, the other end of the resistor R15 is grounded through the capacitor C2. The anode of the diode D6 is connected to the other end of the resistor R15, and the cathode is connected to VA3.3.

[0048] The analog voltage detection circuit mainly realizes the power supply voltage detection of the voltage type sensor of the vehicle integrated electronic information system. First, the voltage is sampled through the resistor voltage divider sampling circuit, and then after passing through the voltage follower circuit, it is output to the ADC port of the microcontroller to realize the voltage value collection.

[0049] Further reading Figure 5 The analog resistance output circuit mainly realizes the resistance signal excitation of the vehicle integrated electronic information system. The analog control board has two fixed resistance output circuits, one of which can output analog resistance values ​​of 10Ω, 52Ω, 90Ω, 137Ω, 180Ω, with an error of ±1Ω, to meet the excitation of 10Ω~180Ω oil level sensors. The other can output 1000Ω, 1193.9Ω, 1385.0Ω, 1573.2Ω, with an error of ±5Ω, to meet the signal excitation of PT1000 temperature sensors.

[0050] The resistance output circuit of the oil level sensor includes resistors R182, R183, R184, R193, R194, R203, R204, R206, and R208, with resistance values ​​of 10Ω±1%, 51Ω±1%, 1Ω±1%, 75Ω±1%, 15Ω±1%, 360Ω±1%, 220Ω±1%, 30Ω±1%, and 150Ω±1%, respectively. The signal relays include K9, K11, K13, K15, and K17, and the model is G6K-2P-Y 5VDC, diodes include V9, V11, V14, V16 and V26, model 1N4148WS, and integrated chip Darlington tube U6, model UL2003AIPW, a diode is connected in parallel to each signal relay, one end of resistor R182 is connected to the main contact of signal relay K9, one end of resistor R183 and R184 in series is connected to the main contact of signal relay K11, one end of resistor R193 and R194 in parallel is connected to the main contact of signal relay K13, one end of resistor R203 and R204 in series is connected to the main contact of signal relay K14. The end is connected to the main contact of signal relay K15, one end of resistors R206 and R208 connected in series is connected to the main contact of signal relay K17, and the other ends of resistors R182, R183, R193, R203, and R206 are connected as common terminals to the common terminal of the device under test, wherein the positive pole of each signal relay wire package is connected to the 5.0V power supply, and the negative pole of the wire package is connected to the input port of Darlington tube U6, and the output control port of Darlington tube U6 is connected to the single-chip microcomputer, and the output end of each signal relay is connected to the main contact of relay K12, and the manual / automatic switch is connected to relay K12. Darlington tube U6 has the ability of over-current relay. The single-chip microcomputer controls the U6 control port to realize the wire package input corresponding to Darlington tube U6 to form a loop, thereby corresponding to the relay action of the gear, closing the manual / automatic switch, relay K12 is energized, and the output end of the resistor is connected to the device under test to realize the resistor output.

[0051] The resistance output circuit of the PT1000 temperature sensor includes resistors R145, R149, R154, R156, R158, R160, R163, R164, R166, R169, R177, R178, R179, R181, the signal relays include K1, K3, K5, K7, K9, K11, K13, K15, K17 and K12, model G6K-2P-Y5VDC, the diodes include V1, V3, V5, V7, V9, V11, V14, V26 and V13, model 1N4148WS, and the integrated chip Darlington tube U6, model UL2003AIPW, each signal relay is connected in parallel with a diode, and one end of the resistor R145 is connected to the signal relay K1 main contact, one end of the resistors R149, R154, R156, R158, and R160 connected in parallel is connected to the main contact of the signal relay K3, one end of the resistors R163, R164, R166, and R169 connected in parallel is connected to the main contact of the signal relay K5, one end of the resistors R177, R178, R179, and R181 connected in parallel is connected to the main contact of the signal relay K7, the other end of the resistor R145 and each resistor connected in parallel is connected as a common terminal to the common terminal of the device under test, wherein the positive pole of each signal relay wire package is connected to a 5.0V power supply, the negative pole of the wire package is connected to the input port of the Darlington tube U6, the output control port of the Darlington tube U6 is connected to the single-chip microcomputer, the output end of each signal relay is connected to the main contact of the relay K12, and the manual / automatic switch is connected to the relay K12. By attracting different signal relays, the output of resistance values ​​at different gears is realized. The single-chip microcomputer controls the actions of different control ports of the Darlington tube U6. U6 drives the relays of corresponding resistance values ​​to attract, thereby outputting the corresponding resistance values.

[0052] The switching between automatic output and manual output of analog resistance is realized by switching relay K12. Pins 4 and 7 of K12 input contacts are connected to the analog fixed resistance output terminal respectively, and pins 2 and 7 of K12 input contacts are connected to the decimal resistance box. The positive pole of K12 wire package is connected to the power supply VDD5 (5.0V), and the negative pole of the wire package is connected to the manual switch on the analog control box panel. When the manual / automatic switching switch on the panel is closed, the relay is switched to the decimal resistance box, and the analog resistance output can complete the resistance output of any resistance value through the decimal resistance box.

[0053] Further reading Figure 6The vehicle speed pulse circuit includes a Darlington tube U4 and an optical coupler TLP281-4. In this embodiment, the Darlington tube U4 model is UL2003AIPW. The four pulse signal ports of the single-chip microcomputer are respectively connected to the four input ports of the Darlington tube U4, the four output ports of the Darlington tube U4 are respectively connected to the input end of each optical coupler in the optical coupler TLP281-4, the output end of each optical coupler in the optical coupler TLP281-4 is connected to the device under test, and the power supply end of each optical coupler in the optical coupler TLP281-4 is connected to the device under test.

[0054] The vehicle speed pulse circuit mainly realizes the pulse signal excitation of the vehicle speed mileage and other pulse signals of the vehicle integrated electronic information system. The vehicle speed pulse circuit of the analog control board outputs the pulse signal through the single-chip microcomputer, drives the optical coupler after passing through the Darlington tube, and the output end of the optical coupler is the pulse signal generation end. Its power supply voltage comes from the device under test, and the output frequency has two modes: fixed (three different frequencies of 100HZ, 200HZ, and 300HZ) and adjustable from 0Hz to 1kHz.

[0055] Further reading Figure 7 ,The CAN communication control circuit includes 2 paths, each of which includes a relay, a diode connected in parallel with the relay, and a double-pole double-throw switch connected to the relay.

[0056] The CAN communication control circuit mainly simulates the fault detection function of the vehicle integrated electronic information system when the CAN bus of the vehicle integrated electronic information system has a physical fault. The analog control board is designed with 2-way CAN communication on-off control circuits, and uses 2 relays to physically cut off the interconnected CAN bus between devices.

[0057] The circuit design of the switch quantity control box is described in detail below with reference to the accompanying drawings.

[0058] See also Figure 8 The switch quantity control box in the present invention is mainly composed of a switch quantity control board, wiring terminals, etc. The switch quantity control board includes a single-chip microcomputer, a power supply circuit, a CAN2 / 3 communication circuit, a switch quantity upper and lower limit control circuit, and 96 sets of switch quantity output circuits, wherein the power supply circuit, the CAN2 / 3 communication circuit, the switch quantity upper and lower limit control circuit, and the 96 sets of switch quantity output circuits are all connected to the single-chip microcomputer, the power supply circuit is externally connected to a 28V power supply, the single-chip microcomputer is connected to the analog quantity control box through the CAN2 / 3 communication circuit, and the output ends of the 96 sets of switch quantity output circuits are connected to the wiring terminals of the switch quantity control box.

[0059] The switch signal control circuit has two functions. One is to apply the upper and lower limits of the switch level signal to the device under test to verify whether the device under test has malfunctioned. The other is to output normal high and low signals to the device under test to verify the functional logic of the device under test. The switch upper and lower limit control circuit is as follows: Fig. 9 As shown, the switch level upper limit control circuit includes diodes D1, D3, capacitors C13, C15, C17, C22, inductor L2, resistors R125 and R127, and a power chip U18, wherein the power chip U18 model is LM2576HVS-ADJ, which is an adjustable power module, capacitors C13, C15, C17 and diode D1 are connected in parallel between port 1 of power chip U8 and ground, port 1 of power chip U8 is connected to VDD, port 2 of power chip U8 is connected to the cathode of diode D3 and one end of inductor L2, and the anode of diode D3 is connected to ground. The other end of the inductor L2 is grounded through the capacitor C22 and through the series resistors R125 and R127. At the same time, the other end of the inductor L2 is used as the upper limit circuit output terminal VH_DOWN. Port 4 of the power chip U8 is connected to the node between the resistors R125 and R127. By adjusting the resistance values ​​of the resistors R125 and R127, the output voltage can be adjusted. In this example, by adjusting the resistors R125 to 3K and R127 to 24K, the switch output voltage is 11V, which is used to test whether the device under test can meet the detection requirements when collecting the lowest limit of the high level. The principle of the switch lower limit control circuit is exactly the same as that of the switch upper limit control circuit. The lower limit output voltage is 8.8V, which is used to test whether the device under test can meet the detection requirements when collecting the upper limit of the low level.

[0060] Switch output circuit such as Fig.10 As shown, the output circuit mainly realizes the switching of the output level of the switch signal and the on / off control of the level. The switch output circuit includes relays K1, K2, and K3, the relay model is G6K-2P-Y5VDC, diodes V1, V2 and V3, model is 1N4148WS, and integrated chip Darlington tube U13, model is UL2003AIPW, among which K3 mainly completes the switching of the level limit. When K3 works, the relay contacts are energized, and the switch signal input is powered by the upper and lower limits of the switch. When K3 is disconnected, the switch signal input is powered by the power supply voltage. Relay K2 mainly realizes the switching of the high and low levels of the switch signal. When K2 is energized, the switch signal input is high level valid, and when K2 is disconnected, the switch input is low level valid. Relay K1 mainly realizes the output on / off control of the switch signal. When K1 is energized, the switch signal is output to the device under test through the wiring terminal. When K1 is disconnected, the switch signal is disconnected.

[0061] The circuit design of the power distribution output control box is described in detail below with reference to the accompanying drawings.

[0062] See also Fig.11As shown, the power distribution output control box includes a relay board, an automobile relay, a terminal block, and a power distribution output indicator light. The relay board includes a single-chip microcomputer circuit, a power supply circuit, and a relay drive circuit. The power supply circuit and the relay drive circuit are connected to the single-chip microcomputer circuit. The power supply circuit is externally connected to a 28V power supply. The single-chip microcomputer circuit is connected to the analog quantity control box through a CAN bus, the relay drive circuit is connected to the automobile relay, the main contacts of the automobile relay are connected to the device under test, and the power distribution output indicator light is connected between the connecting wires of the automobile relay and the device under test, and the single-chip microcomputer circuit is connected to the electronic load through an RS232 circuit.

[0063] The main function of the relay board is to drive the relay to switch the power distribution output of the vehicle's integrated electronic information system to the electronic load, and automatically control the electronic load through bus communication, adjust the output impedance of the electronic load, and realize the power distribution output overcurrent alarm, overcurrent protection and short-circuit protection of the vehicle's integrated electronic information system.

[0064] See also Fig.12 The relay driving circuit includes an optocoupler TLP291, resistors R1, R2, R3, a diode V1, a MOSFET tube (metal-oxide semiconductor field effect transistor) Q1, and a capacitor C1. The signal input end of the optocoupler is connected to the single-chip microcomputer, the power supply end of the optocoupler is connected to VDD28 and the cathode of the diode V1 through the resistor R1, and the signal output end of the optocoupler is connected to the gate of the MOSFET tube Q1. At the same time, the signal output end of the optocoupler is grounded through the parallel resistor R3 and the capacitor C1, the source of the MOSFET tube Q1 is grounded, and the drain of the MOSFET tube Q1 is connected to the anode of the diode V1, and the connection point is used as the output end of the relay driving circuit to connect the automotive relay.

[0065] The computer mainly realizes the interconnection communication with the test platform, controls the test platform through the test software, obtains the test results through the bus, and forms a conclusion.

[0066] The automatic detection system of the vehicle integrated electronic information system has two working modes: manual test and automatic test, as follows:

[0067] Manual testing: Testers select functions on the computer interface based on test requirements, complete test items one by one through the execution buttons on the interface, and make manual judgments on the results. The entire process is mainly operated by humans.

[0068] System automatic test: Automatic test is dominated by program algorithm. The test of each function is a fixed mode. The program controls the input and output of signals, and then detects the parameter change value on the tested device through CAN communication. This value is then compared with the preset value on the computer interface software (from the commissioning manual and acceptance specifications). If it is within the error range, the test is passed. The tester clicks the corresponding process button to proceed to the next process test. Otherwise, the test fails, triggering the alarm buzzer and the interface alarm information prompt. The system flow chart is as follows: Fig.12 shown.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic detection system for an armored vehicle integrated electronic information system, characterized in that: It is mainly composed of an analog quantity control box, a switch quantity control box, a power distribution output control box, a programmable high-power DC regulated power supply, an electronic load, a test cable and an installation cabinet. The analog quantity control box, the switch quantity control box and the power distribution output control box are interconnected through an isolated CAN bus. All data are connected to the computer through another isolated CAN bus after being processed by the analog quantity control box. The power distribution output control box is connected to the electronic load through an RS232 serial port to achieve point-to-point communication connection, which is used to control the power regulation of the electronic load and complete the output automation detection. The analog quantity control box is connected to the programmable high-power DC regulated power supply through another RS232 serial port to achieve point-to-point communication connection, which is used to realize the automatic voltage regulation of the programmable high-power DC regulated power supply. The power distribution output control box includes a relay board, an automobile relay, a wiring terminal, and a power distribution output indicator light. The relay board includes a single-chip computer circuit, a power supply circuit, and a relay drive circuit. The power supply circuit and the relay drive circuit are connected to the single-chip computer circuit. The power supply circuit is externally connected to a power supply. The single-chip computer circuit is connected to the analog quantity control box through a CAN bus. The relay drive circuit is connected to the automobile relay. The main contact of the automobile relay is connected to the device under test. The power distribution output indicator light is connected between the connecting wires of the automobile relay and the device under test. The single-chip computer circuit is connected to the electronic load through an RS232 circuit. The analog quantity control box includes an analog quantity control board, a decimal resistance box, a switching switch, a power switch, and a wiring terminal; The analog control board includes a single chip microcomputer, 12 analog voltage output circuits, 8 analog voltage detection circuits, 4 CAN communication circuits, 2 CAN communication control circuits, 4 vehicle speed pulse circuits, and 2 analog resistance output circuits; One end of the first CAN communication circuit is connected to the single-chip microcomputer, and the other end is connected to the computer. One end of the second and third CAN communication circuits is connected to the single-chip microcomputer, and the other end is used as the CAN device interconnection interface and the CAN switch control box interconnection interface respectively. One end of the fourth CAN communication circuit is connected to the single-chip microcomputer, and the other end is used as the CAN terminal interconnection interface. The 2 CAN communication control circuits are the control circuits of the second and third CAN communication circuits respectively. One end of the 2 CAN communication control circuits is connected to the single-chip microcomputer, and the other end is used as the CAN device interconnection bus respectively. One end of the vehicle speed pulse circuit, the analog voltage output circuit, the analog voltage detection circuit, and the analog resistance output circuit are all connected to the single-chip microcomputer. The other end of the 4 vehicle speed pulse circuits is used as the pulse signal output port, the other end of the analog voltage output circuit is used as the voltage signal output port, the other end of the analog voltage detection circuit is used as the voltage detection interface, and the other end of the analog resistance output circuit is used as the resistance signal output port. The decimal resistance box is connected to one end of the analog resistance output circuit as the resistance signal output port through the switching switch. The external power supply is connected to the power supply circuit through the power switch, and is converted to the single-chip microcomputer power supply voltage through the power supply circuit for chip power supply.

2. The automatic detection system of the armored vehicle integrated electronic information system according to claim 1, characterized in that: The relay drive circuit includes an optocoupler TLP291, resistors R1, R2, R3, a diode V1, a MOSFET tube Q1, and a capacitor C1. The signal input end of the optocoupler is connected to the single-chip computer circuit, the power supply end of the optocoupler is connected to VDD28 and the cathode of the diode V1 through the resistor R1, the signal output end of the optocoupler is connected to the gate of the MOSFET tube Q1, and the signal output end of the optocoupler is grounded through the parallel resistor R3 and the capacitor C1, the source of the MOSFET tube Q1 is grounded, the drain of the MOSFET tube Q1 is connected to the anode of the diode V1, and the connection point is used as the output end of the relay drive circuit to connect the automotive relay.

3. The automatic detection system of the armored vehicle integrated electronic information system according to claim 1, characterized in that: The upper computer software of the computer uses the USBCAN device to control the signal output and analog signal acquisition of the analog control box through the CAN bus, and interacts with the device under test through the connecting terminals. In addition, the RS232 serial port communication built in the analog control box is connected to the programmable high-power DC regulated power supply, and the instructions are sent to the analog control box through the upper computer software, and then sent to the programmable high-power DC regulated power supply through the RS232 serial port to achieve voltage regulation of the programmable high-power regulated power supply; the upper computer software controls the analog control box through the platform interconnection CAN bus, and the analog control box controls the switch control box to output the switch signal through the interconnection communication CAN bus, and interacts with the device under test through the connecting terminals. The upper computer software controls the analog control box through the platform interconnection CAN bus, and the analog control box controls the distribution output control box through the interconnection communication CAN bus to achieve distribution output load channel selection, and then controls the electronic load through the RS232 serial port of the distribution output control box to complete the distribution output current protection function detection and debugging.

4. The automatic detection system of the armored vehicle integrated electronic information system according to claim 1, characterized in that: Each analog voltage output circuit includes an operational amplifier LM2904, a diode D26, resistors R58, R60, R62, R64, capacitors C43, C44, and C50. One end of the resistor R58 is connected to the single-chip microcomputer, and the other end is connected to the positive input terminal of the operational amplifier. The cathode of the diode D2 is connected to VDD5, and the anode is connected to the positive input terminal of the operational amplifier. The reverse input terminal of the operational amplifier is grounded through a resistor R62, and the reverse input terminal of the operational amplifier is connected to the output terminal of the operational amplifier through a parallel resistor R64 and capacitor C52. The power supply terminal of the operational amplifier is connected to VDD12, and the power supply terminal of the operational amplifier is grounded through parallel resistors C43 and C44. One end of the resistor R60 is connected to the output terminal of the operational amplifier, and the other end is connected to the device under test as a voltage signal output interface. At the same time, the other end of the resistor R60 is grounded through a capacitor C50.

5. The automatic detection system of the armored vehicle integrated electronic information system according to claim 1, characterized in that: Each analog voltage detection circuit includes an operational amplifier LM2904D, diodes D4, D6, resistors R13, R15, R17, capacitors C6, C2, one end of the resistor R13 is used as a voltage detection interface and is connected to the device under test, and the other end is connected to the positive input of the operational amplifier, the cathode of the diode D4 is connected to VDD5, and the anode is connected to the positive input of the operational amplifier, the positive input of the operational amplifier is grounded through parallel resistors R17 and C6, the reverse input of the operational amplifier is connected to the output of the operational amplifier, the power supply of the operational amplifier is connected to VDD5, one end of the resistor R15 is connected to the output of the operational amplifier, and the other end is connected to the single-chip microcomputer, while the other end of the resistor R15 is grounded through the capacitor C2, the anode of the diode D6 is connected to the other end of the resistor R15, and the cathode is connected to VA3.

3.

6. The automatic detection system of the armored vehicle integrated electronic information system according to claim 1, characterized in that: The analog resistance output circuit has two fixed resistance outputs.

7. The automatic detection system of the armored vehicle integrated electronic information system according to claim 1, characterized in that: The vehicle speed pulse circuit includes a Darlington tube U4 and an optocoupler TLP281-4. The four pulse signal ports of the single-chip microcomputer are respectively connected to the four input ports of the Darlington tube U4, the four output ports of the Darlington tube U4 are respectively connected to the input end of each optocoupler in the optocoupler TLP281-4, the output end of each optocoupler in the optocoupler TLP281-4 is connected to the device under test, and the power supply end of each optocoupler in the optocoupler TLP281-4 is connected to the device under test.

8. The automatic detection system of the armored vehicle integrated electronic information system according to claim 1, characterized in that: The CAN communication control circuit includes 2 paths, each of which includes a relay, a diode connected in parallel with the relay, and a double-pole double-throw switch connected to the relay.

9. The automatic detection system of the armored vehicle integrated electronic information system according to claim 1, characterized in that: The switch quantity control box is mainly composed of a switch quantity control board and wiring terminals. The switch quantity control board includes a single-chip microcomputer, a power supply circuit, a CAN2 / 3 communication circuit, a switch quantity upper and lower limit control circuit and 96 groups of switch quantity output circuits, wherein the power supply circuit, the CAN2 / 3 communication circuit, the switch quantity upper and lower limit control circuit and the 96 groups of switch quantity output circuits are all connected to the single-chip microcomputer, the power supply circuit is externally connected to a 28V power supply, the single-chip microcomputer is connected to the analog quantity control box through the CAN2 / 3 communication circuit, and the output ends of the 96 groups of switch quantity output circuits are connected to the wiring terminals of the switch quantity control box.

10. The automatic detection system of the armored vehicle integrated electronic information system according to claim 9, characterized in that: The switch level upper limit control circuit includes diodes D1, D3, capacitors C13, C15, C17, C22, inductor L2, resistors R125 and R127 and power chip U18, wherein the power chip U18 model is LM2576HVS-ADJ, capacitors C13, C15, C17 and diode D1 are connected in parallel between port 1 of power chip U8 and ground, port 1 of power chip U8 is connected to VDD, port 2 of power chip U8 is connected to the cathode of diode D3 and the resistor R127. One end of the inductor L2 and the anode of the diode D3 are grounded, and the other end of the inductor L2 is grounded through the capacitor C22 and through the series-connected resistors R125 and R127. At the same time, the other end of the inductor L2 serves as the upper limit circuit output terminal VH_DOWN, and the port 4 of the power chip U8 is connected to the node between the resistors R125 and R127. By adjusting the resistance values ​​of the resistors R125 and R127, the output voltage can be adjusted. The principle of the switch lower limit control circuit is exactly the same as the switch upper limit control circuit.

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