CN220604187U

CN220604187U - Automobile fault diagnosis training device

Info

Publication number: CN220604187U
Application number: CN202322181873.4U
Authority: CN
Inventors: 王一; 张宪科; 孙灿; 彭军
Original assignee: Shandong Xingke Intelligent Technology Co ltd
Current assignee: Shandong Xingke Intelligent Technology Co ltd
Priority date: 2022-08-25
Filing date: 2023-08-14
Publication date: 2024-03-15
Anticipated expiration: 2033-08-14

Abstract

The utility model discloses an automobile fault diagnosis practical training device, which comprises a practical training platform body, a practical training panel and a control box; the practical training platform body comprises an upper platform body and a lower platform body which are fixedly connected, a practical training panel is arranged on the upper platform body, circuit wiring schematic diagrams of various whole vehicle circuit systems are arranged on the practical training panel, detection terminals are arranged on each circuit schematic diagram, and the detection terminals on each circuit wiring schematic diagram are connected with corresponding positions of the actual whole vehicle circuit systems through circuits; one side of the lower table body is provided with a partition board, a control box is placed on the partition board, an ACDC power management module and a server which are electrically connected are arranged in the control box, an interactive touch screen is arranged on the control box, and the touch screen is electrically connected with the server. The height of the platform body of the training device is adjustable, and the ACDC power management module is utilized to automatically collect the electric parameters of the circuit, judge the overrun and safely cut off the power, so that the artificial real-time supervision and control are avoided, the safety of the training is improved, and the cost loss is reduced.

Description

Automobile fault diagnosis training device

Technical Field

The utility model belongs to the technical field of automobile practical training teaching equipment, and particularly relates to an automobile fault diagnosis practical training device.

Background

The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The automobile fault diagnosis is a necessary course for the automobile profession of the universities and colleges, and is a course for practical training. In a practical training course, in order to achieve the aim of combining theory and practice and improve the actual operation and diagnosis capability of students, an automobile fault diagnosis practical training device is generally utilized for teaching. When the conventional automobile fault diagnosis training device is used, a teacher usually sets an automobile electric device or line fault manually in advance, and then students measure and diagnose the automobile electric device or line fault, and fault reasons are judged according to fault phenomena.

However, the existing practical training device for diagnosing automobile faults has certain problems, including:

(1) When the conventional automobile fault diagnosis practical training device is used for practical training teaching, a teacher needs to monitor the operation of each student all the time so as to avoid electric accidents or automobile electric element damage caused by improper operation of the students, the teacher workload is large, and once key electric elements are damaged, the purchasing process is complex, the supply time is long, the purchasing price is high, the recovery difficulty is large, the teaching is possibly delayed, the schedule of the practical training teaching is disturbed, and the influence is serious;

(2) The existing automobile fault diagnosis practical training device generally uses a special instrument to display corresponding electric parameters, one special instrument only displays one electric parameter, for practical training devices with more instruments, if the practical training devices are more than ten instruments, the practical training devices need to be manually observed whether the electric parameters of the practical training devices deviate from the normal voltage and current ranges, when the electric parameters deviate, the total power supply is disconnected through a control electric appliance, the control circuit is complex, the time and the labor are consumed for manual control, and the condition of omission exists;

(3) Most of the existing automobile fault diagnosis training devices only aim at training a certain style of whole automobile or a certain component system of the whole automobile, the appearance is generally different, and the bench is difficult to produce in batch;

(4) The existing practical training device for automobile fault diagnosis is fixed in height of a platform body when leaving a factory, and for teenagers in a physical development period, the individual difference and the age difference lead to different heights, so that the existing practical training device is difficult to meet the use height requirements of different students.

Disclosure of Invention

Aiming at the problems and defects existing in the prior art, the utility model provides the practical training device for diagnosing the automobile faults, the height of a practical training platform of the practical training device is adjustable, a principle wiring diagram of a system is formed by a plurality of whole vehicle parts on a practical training panel on the practical training platform, an ACDC power management module is arranged in the practical training device, and the ACDC power management module is utilized to automatically collect and judge the electric parameters of a circuit, safely cut off the power, so that the problems of manual real-time supervision and control are avoided, the practical training safety can be improved, the cost loss is reduced, and the universality of the practical training device is improved while the teaching of teachers is facilitated.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the practical training device for the automobile fault diagnosis comprises a practical training platform body, a practical training panel and a control box;

the practical training platform body comprises an upper platform body and a lower platform body which are fixedly connected, a practical training panel is arranged on the upper platform body, circuit wiring schematic diagrams of various whole-vehicle circuit systems are arranged on the practical training panel, detection terminals are arranged on each circuit schematic diagram, and the detection terminals on each circuit wiring schematic diagram are connected with corresponding positions of the actual whole-vehicle circuit systems through circuits;

the utility model discloses a control platform, including lower stage body, control box, server, control box is equipped with the inside one side of lower stage body, the baffle is equipped with the baffle, place the control box on the baffle, be equipped with ACDC power management module and the server of electric connection in the control box, be equipped with interactive touch screen on the control box, the touch screen with server wireless connection.

According to a further technical scheme, the server is connected with the ACDC power management module through a line, and the ACDC power management module performs data communication transmission with the server through an RS485 serial port.

According to a further technical scheme, lifting table legs are arranged on two sides of the lower table body, and the ACDC power management module is electrically connected with a lifting motor in the lifting table legs.

Further technical scheme, the lift table leg comprises first hollow table and second hollow table, is provided with the groove of nested lift between second hollow table and the first hollow table, and the second hollow table nestification is in first hollow table, installs a plurality of elevator motors between first hollow table and the second hollow table.

According to a further technical scheme, a power switch button is arranged on one side of the upper table body, and the power switch button is electrically connected with the ACDC power management module.

According to a further technical scheme, the ACDC power management module is composed of a main control board and an ACDC driving acquisition board, and the main control board is connected with the ACDC driving acquisition board through a flat cable.

According to a further technical scheme, the main control board comprises an MCU main control chip, and the ACDC driving acquisition board comprises 2 electric energy metering modules, 2 digital isolators and 3 DCDC isolation modules;

the 2 electric energy metering modules are respectively and correspondingly connected with the 2 digital isolators and then are connected to the MCU main control chip together; the 3 DC-DC isolation modules are connected with a direct current power supply DC12V and are connected with the MCU main control chip, the 2 pairs of mutually connected electric energy metering modules and the digital isolator.

According to a further technical scheme, the ACDC power supply management module further comprises a communication unit, and the communication unit is connected with an MCU main control chip in the main control board.

According to a further technical scheme, a wireless transmission module is arranged in the server, and the server performs data communication transmission with the remote control equipment through the wireless transmission module.

Further technical scheme, go up the stage body with the horizontal fixed deck plate that sets up of lower stage body junction, the back of going up the stage body is equipped with the back and inserts the door, one side of going up the stage body is equipped with the side and opens the door.

Compared with the prior art, the utility model has the following beneficial effects:

1. the practical training device for diagnosing the automobile faults, provided by the utility model, has the advantages that the practical training panel on the practical training platform body is provided with the principle wiring diagram of a plurality of whole automobile part component systems, the practical training device is suitable for practical training of most types of whole automobiles or a plurality of whole automobile component systems, the universality is strong, the platform body can be produced in batches, and the production efficiency is high.

2. The training device provided by the utility model is provided with the ACDC power management module, and the ACDC power management module is utilized to automatically collect and judge the electric parameters of the circuit, and safely cut off the power, so that the problem of manual real-time supervision and control is avoided, the training device is convenient for teachers to teach, the training safety is improved, the cost loss is reduced, and the universality of the training device is improved.

3. The practical training device provided by the utility model can display AC/DC parameters by using external electronic equipment, the main electrical parameters can be set and controlled, the control electrical appliances with the same functions are correspondingly saved, the production cost is saved, the control circuit is simplified, the equipment failure rate is obviously reduced, and the overrun judgment of the electrical parameters of the circuit is automatically carried out through the ACDC power management module, and the ACDC power management module is connected with the total power supply of the device, so that the total power supply can be controlled according to the judgment result, the conditions of time and labor consumption and omission caused by manual control are avoided, and the safety performance is improved.

4. The practical training device provided by the utility model can conveniently adjust the height of the practical training platform by utilizing the interactive touch screen, and can adjust the height of the platform through the power management system according to the self condition, thereby improving the use comfort of a user and being more beneficial to the teaching and practical training of the user.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a front view of a training apparatus according to the present utility model;

FIG. 2 is a left side view of the training apparatus of the present utility model;

FIG. 3 is a top view of the training apparatus of the present utility model;

FIG. 4 is a schematic diagram of the overall structure of the training device according to the present utility model;

FIG. 5 is a schematic diagram of an ACDC power management module in the training device according to the present utility model;

FIG. 6 is a schematic diagram of the connection of the data acquisition circuit in the ACDC drive acquisition board in the training apparatus according to the present utility model;

FIG. 7 is a schematic diagram of the connection of the data acquisition circuit to the digital isolation chip and DCDC isolation chip in the present utility model;

FIG. 8 is a schematic diagram of connection between a communication unit and an MCU master control chip in the present utility model;

FIG. 9 is a schematic diagram of a training panel of the training device of the present utility model.

Wherein, 1, upper table body; 2. a deck plate; 3. a side fan; 4. a drawer; 5. lifting the table leg; 6. a wire slot; 7. a lower table body; 8. universal castor; 9. a case side fan; 10. a touch screen; 11. a rear insert door; 12. a side door is opened; 13. a power switch button; 14. and (5) training a panel.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The utility model discloses an automobile fault diagnosis training device, which is shown in fig. 1 and 4 and comprises a training platform body, a training panel 14 and a control box. Wherein, real standard platform body includes fixed connection's last stage body 1 and lower stage body 7, goes up stage body 1 and the fixed deck plate 2 that sets up of lower stage body 7 junction level.

The upper bench body is provided with a practical training panel, the practical training panel is provided with circuit wiring schematic diagrams of various whole vehicle circuit systems, each circuit schematic diagram is provided with a detection terminal, or the corresponding detection terminal is provided with a detection terminal, as shown in fig. 9, taking a whole vehicle controller and a connection circuit thereof as an example, the practical training panel is provided with a circuit wiring schematic diagram of the whole vehicle controller, the circuit wiring schematic diagram corresponds to the whole vehicle controller below the circuit wiring schematic diagram, and the whole vehicle controller is provided with a plurality of detection terminals. The detection terminals on each circuit wiring schematic diagram are connected with the corresponding positions of the actual whole vehicle circuit system through circuits, and the detection terminals on the circuit wiring schematic diagrams are electrically connected with the actual whole vehicle controller through circuits. The students can utilize the lead wire connected with the ammeter or voltmeter to insert the detection terminal of the corresponding position of the circuit wiring schematic diagram to detect the current or voltage, and because each position on the schematic diagram is electrically connected with the corresponding position in the actual whole vehicle circuit system, the current and the voltage detected by the students are the actual current and the voltage of the whole vehicle, and then the students diagnose the fault type of the automobile according to the detected current and voltage, and compared with the actual preset fault type, the correctness of the fault type diagnosed by the students is judged, so that the practical training of the fault diagnosis of the automobile is realized.

Lifting table legs 5 are arranged on two sides of the lower table body 7. Further, the lifting table legs 5 are set to be plate-shaped, each table leg is composed of a first hollow table plate and a second hollow table plate, a nested lifting groove is formed between the second hollow table plate and the first hollow table plate, the second hollow table plate is nested in the first hollow table plate, and through the groove, the second hollow table plate in the first hollow table plate can move up and down in the second hollow table plate. A plurality of lifting motors are arranged between the first hollow table plate and the second hollow table plate, specifically, two lifting motors are arranged in each lifting table leg, the height of the lifting table legs is changed by controlling the operation and the start and stop of the motors, and then the lifting of the whole practical training table body is realized.

A partition board is arranged on one side of the inside of the lower platform body 7, a control box is arranged on the partition board, an ACDC power management module and a server are arranged in the control box, and the ACDC power management module is connected with the server through an RS485 serial port to realize data communication transmission; as shown in fig. 3, the control box is provided with an interactive touch screen 10, and the server is wirelessly connected with the touch screen 10. Preferably, the touch screen 10 is in a uniform horizontal plane with the table top 2 and is highly flush. Furthermore, the ACDC power management module is electrically connected to the lift motor in the lift table leg 5.

Specifically, the server is connected with the ACDC power management module through a line, and the server performs data communication transmission with the ACDC power management module through an RS485 serial port; the user selects the lifting and lifting height of the platform body through the interactive touch screen 10, generates a control command and transmits the control command to the server, the server communicates with the ACDC power management module through the RS485 serial port and transmits the control command to the ACDC power management module, the ACDC power management module is connected with a control motor of the lifting table leg through a circuit, and the starting, stopping and running of the motor are controlled according to the received control command, so that the lifting of the lifting table leg is realized.

Further, the interactive touch screen can be realized by a tablet computer, and the tablet computer is connected with a server for data transmission and communication. In the embodiment, the practical training device is controlled by the tablet personal computer to lift according to the height of the student, and the lifting motor is controlled to lift and adjust.

Preferably, a wireless transmission module is arranged in the server, and the server performs data communication transmission with external remote control equipment through the wireless transmission module. The server is connected with external remote control equipment in a wireless way, the external remote control equipment can be selected from electronic equipment such as a tablet personal computer and a mobile terminal of a mobile phone, control instructions are issued through the external remote control equipment, the control instructions are transmitted to the server in a wireless way, the server transmits the received control instructions to an ACDC power management module, and the ACDC power management module controls the start, stop and operation of a motor according to the received control instructions, so that lifting of the lifting table legs is realized.

Furthermore, the universal casters 8 are further installed below the lifting table legs 5, so that the training device can be easily moved to a position required to be reached.

Furthermore, one side of the lower platform body 7 provided with the control box is also provided with a machine box side fan 9 for exhausting heat; the other side of the lower table body is also provided with a side fan 3 which is also used for heat dissipation.

The lower platform body 7 is provided with a plurality of layers of drawers 4 at one side far away from the control box, and can be two layers or more layers, and a wire slot 6 is arranged below the drawers and is outwards arranged with the wire slot 6. The drawer 4 is used for placing jumpers, measuring tools, maintenance tools and the like, wherein the measuring tools comprise devices such as an ammeter, a voltmeter, a universal meter, an oscilloscope and the like, and can be directly used when the fault is eliminated, so that the tools are convenient to store. In addition, the wire casing sets up outwards, is convenient for overhaul.

As shown in fig. 2, the back of the upper platform body is also provided with a rear plug door 11, so that the device is convenient to open and further connect the practical training panel with the practical whole vehicle circuit system; a side door 12 is arranged on one side of the upper table body, so that the device is convenient to open for inspection; one side of the upper table body is provided with a power switch button 13 which is electrically connected with the ACDC power management module and used for starting the whole training device.

In this embodiment, the ACDC power management module includes a data acquisition unit, a control unit, and a communication unit. The external AC/DC power supply is connected with the ACDC power supply management module, and provides AC/DC power for the whole training device through the ACDC power supply management module. The power switch button is connected with the ACDC power management module, and the control unit receives the switch signal and controls the start and stop of alternating current/direct current power supply. Meanwhile, the ACDC power management module receives a control signal transmitted by the server through the communication unit, and the control unit controls the operation of the lifting motor in the lifting table leg according to the received control signal, so that the lifting of the practical training device is realized.

In order to solve the problems that when the conventional automobile fault diagnosis training device is used for training teaching, a teacher needs to monitor the operation of each student all the time and needs to manually observe each electric parameter of the training device to carry out power emergency stop, an ACDC power management module is arranged in the training device, a data acquisition unit in the ACDC power management module is connected into the training device, alternating current is 220V alternating current commercial power, and the direct current is 12V direct current which is output after being converted by a switching power supply. Collecting real-time alternating current and direct current parameters of a training device, wherein the alternating current parameters comprise: voltage, current, frequency, power factor, active power, active total power, etc., the dc parameters include: voltage, current, power, total power, etc. The collected data enter a control unit, and the control unit is used for carrying out safe operation judgment according to the data and controlling the emergency stop of power supply. For example, students use ampere meters, voltmeters, universal meters, oscilloscopes and the like to be connected with detection terminals on a circuit schematic diagram for detecting current, voltage, waveforms and the like, if the students are unfamiliar with operation and have the conditions of reverse connection of the anode and the cathode of a device, the voltage or the current of the circuit of the whole practical training device is increased instantly and exceeds a safety threshold range, at this moment, an ACDC power management module in the practical training device can collect the voltage, the current and the like of the real-time circuit and perform safe operation judgment according to real-time data, and when the voltage exceeds the safety threshold range, the whole practical training device is controlled to be powered off, so that the safe use of the practical training device is realized, and the condition that manpower and material resources are wasted due to manual supervision and manual observation of the electric parameter data is avoided.

Further, the control unit transmits the acquired data to the server through the communication unit, the server transmits the data to the touch screen through the wireless network, and the acquired real-time alternating current and direct current parameters are displayed through the touch screen.

Preferably, the server is connected with external remote control equipment in a wireless way, and real-time alternating current and direct current parameters are displayed through the external remote control equipment.

Specifically, in this embodiment, the circuit structure of the ACDC power management module adopts a strong and weak current separation modular split design, and is composed of a main control board and an ACDC driving acquisition board, and is connected through a flat cable. The control unit is a main control board, and the data acquisition unit is an ACDC driving acquisition board. The main control board is arranged at the top of the ABS shell, and the ACDC drive acquisition board is arranged at the bottom of the ABS shell. ABS, namely an acrylonitrile-butadiene-styrene copolymer, is a thermoplastic polymer material with high strength, good toughness and easy processing and forming, and is used as a shell to improve the strength and toughness of the shell. The main control board and the ACDC drive acquisition board are mutually independent in power supply, the ACDC data acquisition circuit is transmitted through the digital isolation IC, the ACDC drive circuit adopts a power relay for output, the lifting is controlled by a bidirectional drive IC, and the power-on/power-off separation, independent power supply, communication signal isolation and anti-interference improvement circuit reliability are realized; the integrated power relay and the bidirectional drive IC simplify the external wiring and are easy to miniaturize the equipment.

The master control board comprises an MCU master control chip, and the MCU master control chip adopts a singlechip with the model of STC8A8K64D 4; the ACDC drive acquisition board includes 2 power metering modules (using IM1266 chips), 2 digital isolators (using 121U31 model digital isolation chips), and 3 DCDC isolation modules (using B1205S model chips). As shown in fig. 5, the ACDC driving acquisition board is connected with ac/dc power, the acquired ac/dc power is respectively connected with the MCU main control chip after passing through the corresponding electric energy metering modules and the digital isolators, specifically, the 2 electric energy metering modules are respectively used for acquiring ac/dc power, and the 2 electric energy metering modules are respectively connected with the 2 digital isolators and then are connected with the MCU main control chip together; the 3 DC-DC isolation modules are connected with a direct current power supply DC12V, are connected with the MCU main control chip, the 2 pairs of mutually connected electric energy metering modules and the digital isolator, and respectively provide main control end isolation power supply for the MCU main control chip, provide isolation power supply for the electric energy metering modules connected with alternating current, and provide isolation power supply for the AC end, and provide isolation power supply for the electric energy metering modules connected with direct current, and the digital isolator.

In the ACDC power management module, the ACDC drive collection board collects ac and dc power through the electric energy metering module, a circuit wiring diagram of the ACDC drive collection board is shown in fig. 6, the terminals of the circuit wiring diagram are respectively connected with the ac and dc power, and the ac and dc power are respectively connected to the input ends (i.e., pins 7) of the chips ADC1/IM1266 and ADC2/IM1266 as inputs. Thereafter, as shown in FIG. 7, pins 2, 3, 5, 6 of chips ADC1/IM1266 and ADC2/IM1266 (i.e., pins ADC1-R, ADC1-T, ADC1-G, ADC1-V and pins ADC2-R, ADC2-T, ADC2-G, ADC 2-V) are correspondingly connected to pins 3, 2, 4, 1 of 2 digital isolation chips U3 and U4, respectively, of model 121U 31.

Meanwhile, a direct current power supply DC12V is connected with 3 DCDC isolation chips with the model number of B1205S, namely DC1, DC2 and DC3, wherein the two DCDC isolation chips (DC 1 and DC 2) are correspondingly connected with a digital isolation chip of 121U31 connected with an IM1266 chip to provide AC end isolation power supply; the other DCDC isolation chip (DC 3) is connected with the digital isolation chips U3 and U4, and is also connected with the STC8A8K64D4 chip to provide main control end isolation power supply, as shown in FIG. 7, after the pin 6 and the pin 4 of the DCDC isolation chip DC3 are connected through the electrolytic capacitor C6, one end of the DCDC isolation chip is connected with the 14 pin VCC of the main control chip and the other end of the DCDC isolation chip is connected with the 16 pin GDN of the main control chip and grounded.

Finally, the pin 7 and the pin 6 of the digital isolation chip correspondingly connected with the AC/DC power supply are connected with the MCU main control chip, specifically, the pin 7 and the pin 6 of the chip are respectively connected with the pin 18 and the pin 19 (namely the pin P3.0 and the pin P3.1) of the STC8A8K64D4 chip aiming at the digital isolation chip U3/121U31 connected with the AC/DC power supply, and the pin 7 and the pin 6 of the U4/121U31 chip are respectively connected with the pin 1 and the pin 2 (namely the pin P1.0 and the pin P1.1) of the STC8A8K64D4 chip, so that the MCU main control chip can acquire AC/DC power data.

Further, in this embodiment, the ACDC power management module further includes a communication unit, where the communication unit uses a MAX485 chip, the MCU main control chip is connected to the communication unit, and the communication unit performs data transmission and communication with other devices (such as a server) through a 485 communication bus. Specifically, as shown in fig. 8, the pins 36, 37, 41 (i.e., the pins P0.0, P0.1, and P0.4) of the STC8A8K64D4 chip are correspondingly connected with the pins 1, 4, 2, and 3 of the MAX485 chip, and the pins 7 and 6 of the MAX485 chip are connected with other devices, so as to realize communication and data transmission through a 485 communication bus.

As another embodiment, the communication unit (MAX 485 chip) is further connected to an optocoupler, and the optocoupler is connected to a lamp driver, and the lamp driver is connected to the LED lamp, so as to drive the LED lamp to be turned on or off. The optical coupler is a chip P521-4 which is used as an interface device for signal isolation in communication and real-time control, so that the reliability of communication transmission and other works is greatly improved; the lamp driver selects the darlington driving chip ULN2002, and on this basis, as shown in fig. 6, K1-2 is connected to pin 13 of the darlington driving chip ULN2002 through a pin connector, and K3-4 is connected to pin 11 of the darlington driving chip ULN2002 through a pin connector.

The ACDC power management module performs safety judgment according to the acquired real-time AC/DC data, compares and judges the real-time data with a preset threshold value, and outputs a control result according to a judgment result: if the real-time data exceeds the preset threshold, judging that the real-time data is unsafe, and at the moment, other conditions such as damage to components in the training device can exist, and controlling the alternating current and direct current power supply to stop; otherwise, the safety is judged. The ACDC power management module has the following specific control principle: the STC8A8K64D4 main control chip stores an ACDC preset initial threshold value, acquires real-time data (data refresh time 260 ms/polling interval 130 ms) of the electric energy metering module by adopting a polling mode through two paths of batch data storage peripheral devices UR1T_DMA and UR2T_DMA, and judges the current output state and controls the output result after the real-time data is compared with the preset threshold value. And through serial port external UART_3, the system is connected with a 485 bus in an interrupt mode to communicate with a server in real time, an ACDC threshold value is set, real-time data of an electric quantity acquisition module are transmitted, an ACDC power supply is controlled, and a lifting motor is started and stopped.

The specific working process of the utility model is as follows:

a practical training panel of the practical training device is provided with circuit wiring schematic diagrams of various whole vehicle circuit systems, each circuit schematic diagram is provided with a detection terminal, and the detection terminal on each circuit wiring schematic diagram is connected with a corresponding position of an actual whole vehicle circuit system through a circuit;

the start and stop of the alternating current power supply and the direct current power supply of the training device are controlled through a power switch button on the training device, and the start and stop state is displayed on a touch screen;

starting the practical training device, inserting a lead connected with an ammeter or a voltmeter into a detection terminal at a corresponding position of the circuit wiring schematic diagram by students to detect current or voltage, and diagnosing automobile faults according to detection data;

in the starting process of the training device, a data acquisition unit in an ACDC remote power management module acquires AC/DC data, the data is uploaded to a server, the server transmits the data to a touch screen, and AC/DC parameters including voltage, current, power, total electric quantity and the like are displayed in real time through the touch screen;

the control unit in the ACDC remote power management module presets the running range of alternating current parameters of the practical training device, namely, current, voltage and the like keep normal work within a certain range, and once the collected data shows that the current is higher or lower than the range, the practical training device is controlled to disconnect the alternating current main power supply;

likewise, the control unit in the ACDC remote power management module presets the operating range of the main dc parameters of the training device: the current and the voltage are in a certain range, the normal work is kept, and once the current and the voltage are higher or lower than the range, the training device is controlled to disconnect the direct current total power supply.

Furthermore, in the training process, the interactive touch screen can control the training device to lift according to the height of the student, and the lifting motor is controlled to lift and adjust.

The practical training device provided by the embodiment can realize automatic safety detection, and avoid the problems of time and labor consumption caused by manual detection and control of the disconnection of the total power supply of the practical training device; the training device comprises circuit wiring schematic diagrams corresponding to various whole vehicle circuit systems, so that the universality is improved, and the generation and the use are convenient; in addition, the platform body height of this practical training device is adjustable, possesses the practicality.

While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.

Claims

1. The practical training device for the automobile fault diagnosis is characterized by comprising a practical training platform body, a practical training panel and a control box;

one side of the lower table body is provided with a partition board, a control box is placed on the partition board, an ACDC power management module and a server which are electrically connected are arranged in the control box, an interactive touch screen is arranged on the control box, and the touch screen is electrically connected with the server.

2. The practical training device for diagnosing automobile faults as claimed in claim 1, wherein the server is connected with the ACDC power management module through a line, and the ACDC power management module is in data communication transmission with the server through an RS485 serial port.

3. The practical training device for diagnosing automobile faults as claimed in claim 1, wherein lifting table legs are arranged on two sides of the lower table body, and the ACDC power management module is electrically connected with a lifting motor in the lifting table legs.

4. The practical training device for diagnosing automobile faults as claimed in claim 3, wherein the lifting table leg consists of a first hollow table plate and a second hollow table plate, a nested lifting groove is formed between the second hollow table plate and the first hollow table plate, the second hollow table plate is nested in the first hollow table plate, and a plurality of lifting motors are arranged between the first hollow table plate and the second hollow table plate.

5. The practical training device for diagnosing automobile faults as claimed in claim 1, wherein a power switch button is arranged on one side of the upper table body, and the power switch button is electrically connected with the ACDC power management module.

6. The practical training device for diagnosing automobile faults as claimed in claim 1, wherein the ACDC power management module is composed of a main control board and an ACDC driving acquisition board, and the main control board is connected with the ACDC driving acquisition board through a flat cable.

7. The practical training device for diagnosing automobile faults as claimed in claim 6, wherein the main control board comprises an MCU main control chip, and the ACDC drive acquisition board comprises 2 electric energy metering modules, 2 digital isolators and 3 DCDC isolation modules;

8. The practical training device for diagnosing automobile faults as claimed in claim 6, wherein the ACDC power management module further comprises a communication unit, and the communication unit is connected with an MCU main control chip in the main control board.

9. The practical training device for diagnosing automobile faults as claimed in claim 1, wherein a wireless transmission module is arranged in the server, and the server performs data communication transmission with the remote control equipment through the wireless transmission module.

10. The practical training device for diagnosing automobile faults as claimed in claim 1, wherein a table top plate is horizontally and fixedly arranged at the joint of the upper table body and the lower table body, a rear plug door is arranged on the back surface of the upper table body, and a side door is arranged on one side of the upper table body.