CN214704415U

CN214704415U - Analog quantity control circuit of detection system of armored vehicle comprehensive electronic information system

Info

Publication number: CN214704415U
Application number: CN202120531525.3U
Authority: CN
Inventors: 张斌; 胡清和; 余建
Original assignee: Hefei Heshi Detection Co ltd
Current assignee: Hefei Heshi Detection Co ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-11-12
Anticipated expiration: 2031-03-12

Abstract

The utility model provides an armoured vehicle synthesizes electronic information system's detecting system's analog quantity control circuit mainly comprises analog quantity control panel, decimal resistance box, change over switch, binding post, analog quantity control panel includes singlechip, 12 way analog voltage output circuit, 8 way analog voltage detection circuit, 4 way CAN communication circuit, 2 way CAN communication control circuit, 4 way speed of a motor vehicle pulse circuit, 2 way analog resistance output circuit. The utility model has the advantages that: aiming at the problems existing in the debugging and the inspection of the conventional vehicle integrated electronic information system, the analog quantity control circuit is designed, and the analog quantity control circuit is provided with a decimal resistor box and a selector switch, so that the adjustment of any value of a resistor signal can be realized.

Description

Analog quantity control circuit of detection system of armored vehicle comprehensive electronic information system

Technical Field

The utility model relates to a vehicle detection field, especially vehicle integrated electronic information system's detection.

Background

The vehicle integrated electronic information system is a whole vehicle electrification control system for armored whole vehicle electrical system control, electrical equipment power distribution management, signal acquisition and processing, working condition display, inter-vehicle interconnection and navigation, and as disclosed in the patent document with the application number of 201910678848.2, the vehicle integrated control system comprises a processor, a communication module and a signal acquisition module, and can process data at a high speed and control vehicles and vehicle-mounted equipment.

The existing vehicle comprehensive electronic information system has the advantages of more control equipment, complex control logic, large system association degree, the power distribution output has the technical characteristics of intelligent power distribution management, protection and the like, and can provide higher requirements for production debugging and inspection personnel along with the batch production of the vehicle integrated electronic information system, because the vehicle integrated electronic information system is mainly applied to special vehicles, the current batch production debugging and inspection is mainly carried out through simple and easy power supplies, control switches, electronic loads, different instruments such as signal generators and tools, and the debugging and inspection work of one set of vehicle integrated electronic information system can be completed only through cyclic line changing and wiring and instrument changing and multi-person cooperative matching, so that the power distribution debugging and inspection equipment has the defects of complex operation, large workload, low efficiency and the like, and needs higher operation requirements for production debugging and inspection personnel.

The patent document with publication number 201720255142.1 discloses a vehicle integrated electronic information debugging system, which comprises a task terminal, a CAN bus, a power cabin acquisition controller, a passenger cabin acquisition controller, a test/analog switch group, a power cabin analog load and signal tool, a passenger cabin analog load and signal tool, a test adapter module and a main control computer. The system adopts a closed-loop control strategy and a bus communication technology, mainly realizes the construction of an operation training environment consistent with actual assembly, solves the problems of lack of training means, high cost and low efficiency of a vehicle comprehensive electronic information system, and has important significance for forming fighting capacity and guaranteeing capacity of new equipment. But does not relate to a specific detection circuit and how to detect.

The patent document with publication number 201710156145.4 discloses a portable rapid detection device for a vehicle integrated electronic information system, which comprises a chassis and a detection device, wherein the detection device comprises a keyboard module, and the keyboard module is connected with an industrial control mainboard through a serial interface; the display module is bidirectionally connected with the industrial control mainboard; the touch pad is connected with the industrial control main board through a serial interface and is used for outputting a control command and displaying test data; the digital multimeter module is connected with the industrial control mainboard through a serial interface and is used for collecting the output direct-current voltage of the tested equipment; the intelligent adapter is connected with the industrial control main board through a serial interface and is used for realizing the signal acquisition and control functions between the tested equipment and the detection device; the detection device realizes synchronous acquisition and processing of various parameters of the vehicle comprehensive electronic information system, and provides an effective technical means for rapid diagnosis of system field operations. However, the portable and fast detection is mainly considered, the design of power distribution is not considered, and the automatic detection of overcurrent alarm, overcurrent protection, overvoltage alarm, overvoltage protection and short-circuit protection on each path according to the designed parameters cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the main technical problem that an armoured vehicle synthesizes electronic information system's detecting system's analog quantity control circuit is provided.

The utility model discloses a following technical means realizes solving above-mentioned technical problem: an analog quantity control circuit of a detection system of an armored vehicle comprehensive electronic information system mainly comprises an analog quantity control board, a decimal resistor box, a selector switch, a power switch and a wiring terminal, wherein the analog quantity control board comprises a single chip microcomputer, 12 paths of analog voltage output circuits, 8 paths of analog voltage detection circuits, 4 paths of CAN communication circuits, 2 paths of CAN communication control circuits, 4 paths of vehicle speed pulse circuits and 2 paths of analog resistor output circuits;

one end of a first path of CAN communication circuit is connected to the singlechip, the other end of the first path of CAN communication circuit is connected to the computer, one end of a second path of CAN communication circuit and one end of a third path of CAN communication circuit are connected to the singlechip, the other ends of the second path of CAN communication circuit and the third path of CAN communication circuit are respectively used as a CAN equipment interconnection interface and a CAN switch control box interconnection interface, one end of a fourth path of CAN communication circuit is connected to the singlechip, the other end of the fourth path of CAN communication circuit is used as a CAN terminal interconnection interface, 2 paths of CAN communication control circuits are respectively used as control circuits of the second path of CAN communication circuit and the third path of CAN communication circuit, one end of the 2 paths of CAN communication control circuits is connected to the singlechip, the other end of the 2 paths of CAN communication control circuits is respectively used as a CAN equipment interconnection bus, one end of a vehicle speed pulse circuit, an analog voltage output circuit, an analog voltage detection circuit and one end of an analog resistance output circuit are all connected to the singlechip, the other end of the 4 paths of vehicle speed pulse circuit is used as a pulse signal output interface, and 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, the other end of the analog resistance output circuit is used as a resistance signal output interface, the decimal resistance box is connected to one end of the analog resistance output circuit, which is used as the resistance signal output interface, through the change-over switch, the external power supply is connected with the power supply circuit through the power supply switch and is converted to the power supply voltage of the single chip microcomputer through the power supply circuit.

As a further specific technical solution, each of the analog voltage output circuits includes an operational amplifier LM2904, a diode D26, a resistor R58, R60, R62, R64, a capacitor C43, C44, and C50, one end of the resistor R58 is connected to the single chip microcomputer, the other end is connected to the forward input end of the operational amplifier, the cathode of the diode D2 is connected to VDD5, the anode is connected to the forward input end of the operational amplifier, the reverse input end of the operational amplifier is grounded through a resistor R62, the reverse input end of the operational amplifier is connected to the output end of the operational amplifier through a resistor R64 and a capacitor C52 which are connected in parallel, the power supply end of the operational amplifier is connected to VDD12, the power supply end of the operational amplifier is grounded through resistors C43 and C44 which are connected in parallel, one end of the resistor R60 is connected to the output end of the operational amplifier, 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.

As a further specific technical solution, each of the analog voltage detection circuits includes an operational amplifier LM2904D, a diode D4, a diode D6, a resistor R13, a resistor R15, a diode R17, a capacitor C6, and a resistor C2, one end of the resistor R13 is used as a voltage detection interface and connected to the device to be detected, the other end of the resistor R13 is connected to the positive input end of the operational amplifier, the cathode of the diode D4 is connected to VDD5, the anode of the diode R13 is connected to the positive input end of the operational amplifier, the positive input end of the operational amplifier is connected to ground through the resistors R17 and C6 which are connected in parallel, the reverse input end of the operational amplifier is connected to the output end of the operational amplifier, 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, the other end of the operational amplifier is connected to the single chip, the other end of the resistor R15 is connected to ground through the capacitor C2, the anode of the diode D6 is connected to the other end of the resistor R15, and the cathode of the operational amplifier is connected to VA 3.3.

As a more specific technical solution, the analog resistance output circuit has two fixed resistance outputs, which are respectively a resistance output circuit of the oil sensor and a resistance output circuit of the PT1000 type temperature sensor.

As a more specific technical scheme, the resistance output circuit of the oil mass sensor comprises signal relays K9, K11, K13, K15 and K17, resistors R182, R183, R184, R193, R194, R203, R204, R206 and R208, diodes V9, V11, V14, V16 and V26, and an integrated chip Darlington tube U6, wherein each signal relay is connected with a diode in parallel, one end of the resistor R182 is connected with a main contact of the signal relay K9, one end of the resistors R183 and R184 connected in series is connected with a main contact of the signal relay K11, one end of the resistors R193 and R194 connected in series is connected with a main contact of the signal relay K13, one end of the resistors R203 and R204 connected in series is connected with a main contact of the signal relay K15, one end of the resistors R206 and R208 connected in series is connected with a main contact of the signal relay K17, the other ends of the resistors R182, R183, R193, R203 and R206 are connected with a positive terminal of a common power source of a common relay, and a common power source, wherein each relay is connected with a signal relay V5.0, the negative pole of the coil is connected with the input port of the Darlington tube U6, the output control port of the Darlington tube U6 is connected with the singlechip, the output ends of the signal relays are connected with the main contact of the relay K12, and the manual/automatic change-over switch is connected with the relay K12.

As a further specific technical scheme, the signal relay is G6K-2P-Y5VDC, the diode is 1N4148WS, and the integrated chip Darlington tube U6 is UL2003 AIPW.

As a more specific technical scheme, the resistance output circuit of the PT1000 type temperature sensor comprises resistors R145, R149, R154, R156, R158, R160, R163, R164, R166, R169, R177, R178, R179 and R181, wherein the signal relays comprise K1, K3, K5 and K7, diodes V1, V3, V4 and V7, and an integrated chip Darlington tube U6, a diode is connected in parallel on each signal relay, one end of the resistor R145 is connected with a main contact of a signal relay K1, one end of the resistors R149, 9, R154, R156, R158 and R160 are connected in parallel is connected with a main contact of the signal relay K3, one end of the resistors R163, R164, R166 and R169 is connected with a main contact of the signal relay K5, one end of the resistors R177, R178, R179 and R181 are connected in parallel is connected with a main contact of the signal relay K7, the other end of the resistor R145 and the other end of the common relay are connected with a common power supply terminal V5.0.5, the negative pole of the coil is connected with the input port of the Darlington tube U6, the output control port of the Darlington tube U6 is connected with the singlechip, the output ends of the signal relays are connected with the main contact of the relay K12, and the manual/automatic change-over switch is connected with the relay K12.

The utility model has the advantages that: aiming at the problems of debugging and inspection of the conventional vehicle integrated electronic information system, the automatic detection system of the systematic vehicle integrated electronic information system is designed, the automatic detection platform is controlled by a computer to realize the automatic detection of the vehicle integrated electronic information system, the intelligent power distribution management and control of the systematic vehicle integrated electronic information system are aimed, and an analog quantity control circuit is designed, is provided with a decimal resistor box and a selector switch and can realize the adjustment of any value of a resistor signal, wherein an analog voltage signal output circuit mainly realizes the voltage signal excitation of the vehicle integrated electronic information system, the output voltage amplitude is adjustable within the range of DC0.5V-DC7.2V, and the error is +/-0.01V. The analog quantity control board is provided with two paths of fixed resistance output circuits, wherein one path simulates a resistance value to meet the excitation of the oil quantity sensor of 10-180 omega, and the other path simulates the signal excitation of the PT1000 type temperature sensor.

Drawings

FIG. 1 is a functional block diagram of a vehicle integrated electronic information system automated inspection system;

FIG. 2 is a functional block diagram of the connection of the analog quantity control box to the computer;

FIG. 3 is a circuit diagram of an analog voltage signal output circuit;

FIG. 4 is a voltage detection circuit diagram;

FIG. 5 is a circuit diagram of an analog resistance output circuit;

FIG. 6 is a vehicle speed pulse circuit diagram;

FIG. 7 is a CAN communication circuit diagram;

FIG. 8 is a functional block diagram of a switching value control board;

FIG. 9 is a circuit diagram of switching value upper and lower limit control;

fig. 10 is a switching value output circuit diagram;

FIG. 11 is a functional block diagram of a power distribution output control box;

fig. 12 is a relay drive circuit diagram;

fig. 13 is an automatic test flowchart of the present invention.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the automatic detection system of the integrated electronic information system for vehicles of the present invention mainly comprises an analog control box, a switch control box, a distribution output control box, a programmable high-power dc regulated power supply, an electronic load, a test cable, and an installation cabinet.

This automatic detecting system of electronic information system is synthesized to vehicle has CAN communication function, analog quantity control box, keep apart CAN bus interconnection through 1 route between switching value control box and the distribution output control box, all data and through keeping apart CAN bus connection to the computer through another route after analog quantity control box handles, distribution output control box and electronic load are through RS232 serial connections of the same kind, realize point-to-point communication connection, a power regulation for controlling electronic load, accomplish the automatic detection of output, analog quantity control box and programmable high-power supply are through another route RS232 serial connections, realize point-to-point communication connection, a voltage automatically regulated for realizing programmable high-power supply, accomplish the automatic realization of power characteristics.

The upper computer software of the computer utilizes the USBCAN equipment to control the signal output and the analog quantity signal acquisition of the analog quantity control box through the CAN bus, and interacts the signal with the tested equipment through the connecting terminal, thereby achieving the purpose of detecting and debugging the analog quantity information of the tested equipment. The RS232 serial port arranged in the analog quantity control box is in communication connection with the programmable high-power direct-current stabilized voltage supply device, an instruction is issued to the analog quantity control box through upper computer software, and then the instruction is issued to the programmable high-power direct-current stabilized voltage supply through the RS232 serial port, so that the voltage regulation of the programmable high-power stabilized voltage supply is realized; the upper computer software controls the analog quantity control box through a platform interconnection CAN bus (CAN1), the analog quantity control box controls the switching quantity control box to output switching quantity signals through an interconnection communication CAN bus (CAN2/3), and the signals are interacted with the tested equipment through connecting terminals, so that the purposes of detecting and debugging the switching quantity information of the tested equipment are achieved; the upper computer software controls the analog quantity control box through a platform interconnection CAN bus (CAN1), the analog quantity control box controls the distribution output quantity control box through an interconnection communication CAN bus (CAN2) to realize the selection of a distribution output load channel, and then the RS232 serial port of the distribution output quantity control box controls an electronic load to complete the detection and debugging of the distribution output current protection function.

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

Referring to fig. 2, a schematic block diagram of the connection between the analog quantity control box and the computer is shown, where the analog quantity control box mainly includes an analog quantity control board, a decimal resistor box, a switch, a power switch, and a connection terminal.

The analog quantity control board is a main execution component for automatically debugging and detecting analog signals, and comprises a single chip microcomputer, 12 paths of analog voltage output circuits, 8 paths of analog voltage detection circuits, 4 paths of CAN communication circuits, 2 paths of CAN communication control circuits, 4 paths of vehicle speed pulse circuits and 2 paths of analog resistance output circuits.

One end of the first path of CAN communication circuit is connected to the single chip microcomputer, the other end of the first path of CAN communication circuit is connected to the computer, one end of the second path of CAN communication circuit and one end of the third path of CAN communication circuit are connected to the single chip microcomputer, the other end of the second path of CAN communication circuit and the other end of the third path of CAN communication circuit are respectively used as a CAN equipment interconnection interface and a CAN switch control box interconnection interface, one end of the 2 path of CAN communication control circuit is connected to the single chip microcomputer, the other end of the fourth path of CAN communication circuit is respectively used as a CAN tested equipment interconnection bus, the 2 path of CAN communication control circuit controls CAN communication of tested equipment, the CAN communication control circuit is used for simulating bus break of the equipment, the equipment CAN keep the state, abnormal functions CAN not occur, and the first path of CAN communication circuit and the fourth path of CAN communication circuit do not need to be controlled. One ends of the vehicle speed pulse circuit, the analog voltage output circuit, the analog voltage detection circuit and the analog resistance output circuit are connected to the single chip microcomputer, the other ends of the 4 paths of vehicle speed pulse circuits are used as pulse signal output interfaces, the other ends of the analog voltage output circuits are used as voltage signal output interfaces, the other ends of the analog voltage detection circuits are used as voltage detection interfaces, and the other ends of the analog resistance output circuits are used as resistance signal output interfaces. The decimal resistor box is connected to the analog resistor output circuit through the change-over switch and serves as one end of the resistor signal output interface. The external power supply is connected with the power circuit through the power switch, and is converted into the power supply voltage of the single chip microcomputer through the power circuit for supplying power to the chip.

The analog quantity control box mainly completes the functions of 12 paths of analog voltage signal output, 8 paths of analog voltage detection, 4 paths of analog resistance quantity output, 4 paths of pulse signal output and 4 paths of CAN communication signal on-off control automatic debugging and detection, and meanwhile, a decimal resistance box and a change-over switch are arranged in the analog quantity control box, so that the adjustment of any value of a resistance signal CAN be realized.

Further referring to fig. 3, for one example, each analog voltage output circuit includes an operational amplifier LM2904, a diode D26, a resistor R58, a resistor R60, a resistor R62, a resistor R64, a capacitor C43, a capacitor C44, and a capacitor C50. One end of a resistor R58 is connected to the singlechip, the other end is connected to the forward input end of the operational amplifier, the cathode of a diode D2 is connected to VDD5, the anode is connected to the forward input end of the operational amplifier, the reverse input end of the operational amplifier is grounded through a resistor R62, the reverse input end of the operational amplifier is connected to the output end of the operational amplifier through a resistor R64 and a capacitor C52 which are connected in parallel, the power supply end of the operational amplifier is connected to VDD12, the power supply end of the operational amplifier is grounded through resistors C43 and C44 which are connected in parallel, one end of a resistor R60 is connected to the output end of the operational amplifier, the other end of the resistor R60 is used as a voltage signal output interface and connected to the tested device through a capacitor C50.

The analog voltage signal output circuit mainly realizes the voltage signal excitation function of the vehicle integrated electronic information system, utilizes the DAC port of the singlechip to output an adjustable analog voltage signal, then outputs the adjustable analog voltage signal to the receiving port of the tested equipment after being amplified by the operational amplifier LM2904, and the output voltage amplitude is adjustable within the range of DC0.5V-DC7.2V, and the error is +/-0.01V.

Further referring to fig. 4, for an example of one of the paths, each of the analog voltage detection circuits includes an operational amplifier LM2904D, diodes D4, D6, resistors R13, R15, R17, capacitors C6, and C2. One end of a resistor R13 is used as a voltage detection interface and is connected to a device to be detected, the other end of the resistor R13 is connected to the forward input end of an operational amplifier, the cathode of a diode D4 is connected with VDD5, the anode of the diode D4 is connected to the forward input end of the operational amplifier, the forward input end of the operational amplifier is grounded through resistors R17 and C6 which are connected in parallel, the reverse input end of the operational amplifier is connected with the output end of the operational amplifier, the power supply of the operational amplifier is connected with VDD5, one end of a resistor R15 is connected with the output end of the operational amplifier, the other end of the resistor R15 is connected with a single chip microcomputer, meanwhile, the other end of the resistor R15 is grounded through a capacitor C2, the anode of a diode D6 is connected with the other end of a resistor R15, and the cathode of the diode D6 is connected with VA 3.3.

The analog voltage detection circuit mainly realizes the power supply voltage detection of a voltage type sensor of a vehicle integrated electronic information system, firstly performs voltage sampling through the resistance voltage division sampling circuit, and then outputs the voltage to an ADC (analog to digital converter) port of the single chip microcomputer after passing through the voltage following circuit so as to realize the acquisition of a voltage value.

Further referring to fig. 5, the analog resistance output circuit mainly realizes the resistance signal excitation function of the vehicle integrated electronic information system, and the analog quantity control board has two fixed resistance output circuits, wherein one analog resistance value can be output to 10 Ω, 52 Ω, 90 Ω, 137 Ω and 180 Ω, and the error is ± 1 Ω, so as to satisfy the excitation of the 10 Ω -180 Ω oil quantity sensor. The other path can output 1000 omega, 1193.9 omega, 1385.0 omega and 1573.2 omega with the error of +/-5 omega so as to meet the signal excitation of the PT1000 type temperature sensor.

The resistance output circuit of the oil mass sensor comprises resistors R182, R183, R184, R193, R194, R203, R204, R206 and R208, the resistance values of the resistors are respectively 10 omega +/-1%, 51 omega +/-1%, 1 omega +/-1%, 75 omega +/-1%, 15 omega +/-1%, 360 omega +/-1%, 220 omega +/-1%, 30 omega +/-1% and 150 omega +/-1%, the signal relays comprise K9, K11, K13, K15 and K17, the model is G6K-2P-Y5VDC, the diodes comprise V9, V11, V14, V16 and V26, the model is 1N4148WS, and an integrated chip Darlington tube U6, the model is UL2003AIPW, a diode is connected in parallel to each signal relay, one end of the resistor R182 is connected with a main contact of the signal relay K9, one end of the resistors R183 and R184 after being connected in series is connected with a main contact of the signal relay K11, one end of the resistor R193 and R194 are connected with a main contact of the signal relay K3985 after being connected in series, one end of each of the resistors R206 and R208 after being connected in series is connected with a main contact of a signal relay K17, the other ends of the resistors R182, R183, R193, R203 and R206 are connected as a common end to be connected with a common end of a tested device, wherein the positive electrode of each signal relay coil is connected with a 5.0V power supply, the negative electrode of each signal relay coil is connected with an input port of a Darlington tube U6, an output control port of the Darlington tube U6 is connected with a single chip microcomputer, the output end of each signal relay is connected with a main contact of a relay K12, and a manual/automatic change-over switch is connected with the relay K12. The darlington tube U6 has the ability of an overlarge current relay, the single chip microcomputer controls the U6 control port to realize that the coil input corresponding to the darlington tube U6 forms a loop, so that the action of the relay corresponding to the gear is realized, the manual/automatic change-over switch is closed, the relay K12 is attracted, the output end of the resistor is connected to the tested equipment, and the output of the resistor is realized.

The resistance output circuit of the PT1000 type temperature sensor comprises resistors R145, R149, R154, R156, R158, R160, R163, R164, R166, R169, R177, R178, R179 and R181, the signal relays comprise K1, K3, K5, K7, K9, K11, K13, K15, K17 and K12, the model is G6K-2P-Y5VDC, the diodes comprise V1, V3, V9, V7, V9, V11, V14, V26 and V13, the model is 1N4148WS, the integrated chip Darlington tube U6, the model is UL2003AIPW, each signal relay is connected with a diode in parallel, one end of the resistor R145 is connected with a signal relay K6, one end of the resistors R145 is connected with the signal relay K6, one end of the resistors R154, R149, R156, R158 and R160 are connected with a signal contact point of the signal relay K179 and R179, R179 and R72 as a common contact point of the rear end of the signal relay connected with the signal relay and R179 and R72 in parallel, and the rear contact point of the rear end of the signal relay are connected with the signal relay connected with the signal contact point of the signal relay connected with the main contact point of the common device, the positive pole of each signal relay coil is connected with a 5.0V power supply, the negative pole of each coil is connected with an input port of a Darlington tube U6, an output control port of the Darlington tube U6 is connected with a single chip microcomputer, the output end of each signal relay is connected with a relay K12 main contact, and a manual/automatic change-over switch is connected with a relay K12. Different gear resistance values are output by attracting different signal relays, the single chip microcomputer controls different control ports of the Darlington tube U6 to act, and the U6 drives the relays with corresponding resistance values to attract, so that corresponding resistance values are output.

The automatic output and manual output switching of the analog resistor is realized by switching a relay K12, a pin 4 and a pin 7 of a K12 input contact are respectively connected with the output end of the analog fixed resistor, a pin 2 and a pin 7 of a K12 input contact are connected with a decimal resistor box, the positive electrode of a K12 coil is connected with a power supply VDD5(5.0V), the negative electrode of the coil is connected with a manual switch of an analog control box panel, when the manual/automatic switch of the panel is closed, the relay is switched to the decimal resistor box, and the analog resistor output can be realized by the decimal resistor box.

With further reference to FIG. 6, the vehicle speed pulse circuit includes a Darlington tube U4, an opto-coupler TLP281-4, in this embodiment, a Darlington tube U4 model number UL2003 AIPW. 4 pulse signal ports of the single chip microcomputer are respectively connected to 4 input ports of the Darlington tube U4, 4 output ports of the Darlington tube U4 are respectively connected to the input end of each optical coupler in the optical couplers TLP281-4, the output end of each optical coupler in the optical couplers TLP281-4 is connected to the device to be tested, and the power supply end of each optical coupler in the optical couplers TLP281-4 is connected to the device to be tested.

The speed pulse circuit of the analog quantity control panel outputs pulse signals through a single chip microcomputer, and then drives an optical coupler after passing through a Darlington tube, and the output end of the optical coupler is the generation end of the pulse signals. The power supply voltage comes from the tested equipment, and the output frequency has two modes of fixing (three different frequencies of 100HZ, 200HZ and 300 HZ) and adjusting from 0Hz to 1 kHz.

Referring further to fig. 7, the CAN communication control circuit includes 2 paths, each path includes a relay, a diode connected in parallel with the relay, and a double-pole double-throw switch connected to the relay.

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 physical faults, the analog quantity control panel is provided with 2 paths of CAN communication on-off control circuits, and 2 relays are adopted to physically cut off the interconnected CAN bus between the devices.

The circuit design of the switching value control box is described in detail below with reference to the drawings.

Referring to fig. 8, the switching value control box of the present invention mainly comprises a switching value control board, a connection terminal, etc. The switching value control board comprises a single chip microcomputer, a power circuit, a CAN2/3 communication circuit, switching value upper and lower limit control circuits and 96 groups of switching value output circuits, wherein the power circuit, the CAN2/3 communication circuit, the switching value upper and lower limit control circuits and the 96 groups of switching value output circuits are all connected to the single chip microcomputer, the power circuit is externally connected with a 28V power supply, the single chip microcomputer is connected with an analog quantity control box through the CAN2/3 communication circuit, and the output ends of the 96 groups of switching value output circuits are connected to a switching value control box wiring terminal.

The switching value signal control circuit comprises two functions, one is that upper and lower limits of a switching value level signal to be detected are applied to the detected equipment to verify whether the detected equipment works mistakenly, the other is that the normal high and low signals are output to the detected equipment to verify the function logic of the detected equipment, the switching value upper and lower limit control circuit is shown in figure 9, the switching value upper limit control circuit comprises diodes D1, D3, capacitors C13, C15, C17, C22, an inductor L2, resistors R125 and R127 and a power chip U18, wherein the model of the power chip U18 is LM2576HVS-ADJ, the power chip is an adjustable power module, the capacitors C13, C15, C17 and the diode D1 are connected between a port 1 of the power chip U8 and the ground in parallel, the port 1 of the power chip U8 is connected with VDD, the port 2 of the power chip U8 is connected with the cathode of the diode D3 and one end of the inductor L2, the anode of the diode D3 is grounded, the other end of the L2 is connected with the ground through the resistor 22 and the resistor R125 and the resistor R127, meanwhile, the other end of the inductor L2 serves as an output end VH _ DOWN of the upper limit circuit, the port 4 of the power supply chip U8 is connected to a junction point between the resistors R125 and R127, the output voltage can be adjusted by adjusting the resistance values of the resistors R125 and R127, in this example, the output voltage of the switching value is 11V by adjusting the resistance value of the resistor R125 to be 3K, R127K, and the detection requirement can be met when the tested device collects the lowest limit of the high level. The principle of the switching value lower limit control circuit is completely the same as that of the switching value upper limit control circuit, and the lower limit output voltage is 8.8V, so that whether the detection requirement can be met when the tested device collects the upper limit of the low level is tested.

The switching value output circuit mainly realizes the switching of the output level of the switching value signal and the on and off control of the level, as shown in figure 10, the output circuit mainly realizes the switching of the output level of the switching value signal and the on and off control of the level, the switching value output circuit comprises a relay K1, a relay K2 and a relay K3, the model of the relay is G6K-2P-Y5VDC, diodes V1, V2 and V3, the model of the relay is 1N4148WS, and an integrated chip Darlington tube U13, the model of the relay is UL2003AIPW, wherein K3 mainly completes the switching of the limit of the level, when the K3 works, the relay contacts attract, the switching value signal input is supplied by the upper limit and the lower limit of the switching value, when the K3 is disconnected, the switching value signal input is supplied by the power supply voltage, the relay K2 mainly realizes the switching of the high level and the low level of the switching value signal, when the K2 attracts, the switching value signal input is effective at the high level, when the K2 is disconnected, the switching value input is effective, and the relay K1 mainly realizes the on control of the on and the output of the switching value signal, And (3) switching-off control, wherein when the K1 is attracted, the switching value signal is output to the tested device through the wiring terminal, and when the K1 is disconnected, the switching value signal is disconnected.

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

Referring to fig. 11 and showing, distribution output control box includes the relay board, automobile relay, binding post, distribution output pilot lamp, the relay board includes the single chip microcomputer circuit, power supply circuit and relay drive circuit are connected to the single chip microcomputer circuit, the external 28V power of power supply circuit, the single chip microcomputer circuit passes through CAN bus connection analog quantity control box, relay drive circuit connects automobile relay, automobile relay main contact connects equipment under test, and distribution output pilot lamp connects between automobile relay and equipment under test's connecting wire, the single chip microcomputer circuit passes through RS232 circuit connection to electronic load.

The relay board has the main functions of driving the relay, switching the power distribution output of the vehicle integrated electronic information system to the electronic load, automatically controlling the electronic load through bus communication, adjusting the output impedance of the electronic load, and realizing the functions of overcurrent alarm, overcurrent protection, short-circuit protection and the like of the power distribution output of the vehicle integrated electronic information system.

Referring to fig. 11, the relay driving circuit includes an optocoupler TLP291, resistors R1, R2, R3, a diode V1, a MOSFET (metal-oxide semiconductor field effect transistor) Q1, and a capacitor C1, a signal input end of the optocoupler is connected to a single chip microcomputer, a power supply end of the optocoupler is connected to a VDD28 and a cathode of the diode V1 through a resistor R1, a signal output end of the optocoupler is connected to a gate of a MOSFET Q1, a signal output end of the optocoupler is grounded through a resistor R3 and a capacitor C1 connected in parallel, a source of the MOSFET Q1 is grounded, a drain of the MOSFET Q1 is connected to an anode of the diode V1, and a connection point is used as an output end of the relay driving circuit and connected to the automotive relay.

The computer mainly realizes the interconnection communication with the test platform, realizes the control of the test platform through test software, and obtains the test result through the bus to form a conclusion.

The automatic detection system of the vehicle integrated electronic information system has two working modes of manual testing and automatic testing, and comprises the following specific steps:

manual testing: the tester selects the function on the computer interface according to the test requirement, completes the test items one by one through the execution key of the interface, and judges the result artificially, and the whole process is mainly operated by the personnel.

And (3) automatic system test: the automatic test is mainly based on a program algorithm, the test of each function is in a fixed mode, a program control signal is input and output, then a parameter change value on the tested equipment is detected through CAN communication, the value is compared with a preset value (from a debugging specification and an acceptance specification) on computer interface software, in an error range, through the test, a tester clicks a corresponding process button to detect the next process, otherwise, the test fails, an alarm buzzer and interface alarm information prompt are triggered, and a system flow chart is shown in figure 12.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. An analog quantity control circuit of a detection system of an armored vehicle comprehensive electronic information system is characterized in that: the device mainly comprises an analog quantity control board, a decimal resistor box, a selector switch, a power switch and a wiring terminal, wherein the analog quantity control board comprises a single chip microcomputer, 12 paths of analog voltage output circuits, 8 paths of analog voltage detection circuits, 4 paths of CAN communication circuits, 2 paths of CAN communication control circuits, 4 paths of vehicle speed pulse circuits and 2 paths of analog resistor output circuits;

2. The analog quantity control circuit of a detection system of an armored vehicle integrated electronic information system according to claim 1, wherein: each path of analog voltage output circuit comprises an operational amplifier LM2904, a diode D26, a resistor R58, a resistor R60, a diode R62, a resistor R64, a capacitor C43, a capacitor C44 and a capacitor C50, wherein one end of the resistor R58 is connected to the single chip microcomputer, the other end of the resistor R58 is connected to the forward input end of the operational amplifier, the cathode of the diode D2 is connected with a VDD5, the anode of the diode D2 is connected to the forward input end of the operational amplifier, the reverse input end of the operational amplifier is grounded through a resistor R62, the reverse input end of the operational amplifier is connected to the output end of the operational amplifier through a resistor R64 and a capacitor C52 which are connected in parallel, the power supply end of the operational amplifier is connected to the VDD12, the power supply end of the operational amplifier is grounded through resistors C43 and C44 which are connected in parallel, one end of the resistor R60 is connected to the output end of the operational amplifier, the other end is used as a voltage signal output interface to a device to be tested, and the other end of the resistor R60 is connected to the ground through a capacitor C50.

3. The analog quantity control circuit of a detection system of an armored vehicle integrated electronic information system according to claim 1, wherein: each circuit of the analog voltage detection circuit comprises an operational amplifier LM2904D, diodes D4, D6, resistors R13, R15, R17, capacitors C6 and C2, one end of a resistor R13 is used as a voltage detection interface and is connected to a device to be detected, the other end of the resistor R13 is connected to the positive input end of the operational amplifier, the cathode of a diode D4 is connected to a VDD5, the anode of the diode D4 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, the power supply end of the operational amplifier is connected to a VDD5, one end of the resistor R15 is connected to the output end of the operational amplifier, the other end of the resistor R15 is grounded through a capacitor C2, the anode of the diode D6 is connected to the other end of the resistor R15, and the cathode of the diode D6853.3.

4. The analog quantity control circuit of a detection system of an armored vehicle integrated electronic information system according to claim 1, wherein: the analog resistance output circuit has two paths of fixed resistance outputs, namely a resistance output circuit of the oil quantity sensor and a resistance output circuit of the PT1000 type temperature sensor.

5. The armored vehicle integrated electronic information system detection system analog quantity control circuit of claim 4, wherein: the resistance output circuit of the oil mass sensor comprises signal relays K9, K11, K13, K15 and K17, resistors R182, R183, R184, R193, R194, R203, R204, R206, R208, diodes V9, V11, V14, V16 and V26, and an integrated chip Darlington tube U6, wherein each signal relay is connected with a diode in parallel, one end of the resistor R182 is connected with a main contact of the signal relay K9, one end of the resistors R183 and R184 after being connected in series is connected with a main contact of the signal relay K11, one end of the resistors R193 and R194 after being connected in series is connected with a main contact of the signal relay K13, one end of the resistors R203 and R204 after being connected in series is connected with a main contact of the signal relay K15, one end of the resistors R206 and R208 after being connected in series is connected with a main contact of the signal relay K17, the other ends of the resistors R182, R183, R193, R203 and R206 are connected with a common terminal of a power supply of a common device under test, and each signal relay coil reaches a positive pole of the common power supply line of the common relay U6, wherein each signal relay U365.0, the output control port of the Darlington tube U6 is connected with the singlechip, the output end of each signal relay is connected with the main contact of the relay K12, and the manual/automatic change-over switch is connected with the relay K12.

6. The armored vehicle integrated electronic information system detection system analog quantity control circuit of claim 5, wherein: the signal relay is G6K-2P-Y5VDC, the diode is 1N4148WS, and the integrated chip Darlington tube U6 is UL2003 AIPW.

7. The armored vehicle integrated electronic information system detection system analog quantity control circuit of claim 4, wherein: the resistance output circuit of the PT1000 type temperature sensor comprises resistors R145, R149, R154, R156, R158, R160, R163, R164, R166, R169, R177, R178, R179 and R181, a signal relay comprises K1, K3, K5 and K7, diodes V1, V3, V4 and V7, and an integrated chip Darlington tube U6, a diode is connected in parallel on each signal relay, one end of the resistor R145 is connected with the main contact of the signal relay K1, one end of the resistors R149, 9, R154, R156, R158 and R160 are connected in parallel is connected with the main contact of the signal relay K3, one end of the resistors R163, R164, R166 and R169 are connected in parallel is connected with the main contact of the signal relay K5, one end of the resistors R177, R178, R179 and R181 are connected with the main contact of the signal relay K7, the other ends of the resistors R145 and the resistors after parallel are connected as a common connected with a power supply, wherein each coil reaches the positive pole of a common power supply U6855, and each coil reaches the negative pole of the common power supply terminal of the U6855, the output control port of the Darlington tube U6 is connected with the singlechip, the output end of each signal relay is connected with the main contact of the relay K12, and the manual/automatic change-over switch is connected with the relay K12.

8. The armored vehicle integrated electronic information system detection system analog quantity control circuit of claim 7, wherein: the signal relay is G6K-2P-Y5VDC, the diode is 1N4148WS, and the integrated chip Darlington tube U6 is UL2003 AIPW.