Complete vehicle data recovery detection device

Abstract

The utility model discloses a finished automobile data recovery detection device, comprising a box body, a teaching practical training panel is arranged on the box body, the teaching practical training panel is provided with a control area, an interface area, a control circuit and an automobile high-voltage circuit structure circuit diagram, and the interface area is provided with a plurality of terminal interfaces; the control circuit comprises a wireless module, a processing chip, a DAC chip and an amplifying circuit, the wireless module sends received remote data to the processing chip for analysis and controls the DAC chip to output corresponding primary voltage reduced in equal proportion, and then the voltage in the remote data is restored through the amplifying circuit so as to meet the voltage requirement in the automobile controller. The whole process is closer to a real scene, students can understand and learn real operation steps, and the teaching efficiency is improved. The definition of each terminal interface in the interface area depends on the received data, and can adapt to different vehicle types and different modules. Therefore, a computer in a traditional teaching system can be replaced, so that the teaching cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and in particular to a whole vehicle data restoration detection device. Background Art

[0002] Currently, in the field of automobile teaching, data collection has been adopted for vehicle teaching, and data restoration has been carried out through software, which solves the problem of multiple students testing the same vehicle at the same time. However, in actual use, the teaching efficiency is not high. This is mainly because the use of software operation reduces the students' hands-on operation opportunities, which is not conducive to students' understanding and learning of the real operation and testing steps; and the use of software operation often requires a computer, which has a high teaching cost.

[0003] like Figure 1 The application diagram of the prior art is shown. The vehicle acquisition device 20 acquires the data of the vehicle module 22 and sends it to the router 21. Other devices in the same local area network can acquire the data. Students can view the corresponding voltage data by using the student tablet 23 (tablet computer). The voltage data of this prior art is simulated by software. The software simulation method is too simple to use, which is not conducive to students understanding and learning the real operation steps, and the cost of using a tablet computer is high. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a vehicle data restoration and detection device with a simpler structure and an operation process closer to the real scene, which is conducive to improving teaching efficiency and reducing teaching costs in view of the shortcomings of the existing technology.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a whole vehicle data restoration and detection device, including a box body, on which a teaching and training panel is arranged, the teaching and training panel is provided with a control area, an interface area, a control circuit and a circuit diagram of a vehicle high-voltage circuit structure, and the interface area has a number of terminal interfaces for leading out the required detection circuits; the control circuit includes a wireless module, a processing chip, a DAC chip (digital-to-analog conversion chip), and an amplifying circuit. The wireless module sends the received remote data to the processing chip, the processing chip parses the data, and controls the DAC chip to output a primary voltage corresponding to the proportional reduction, and then restores the voltage in the remote data through the amplifying circuit.

[0006] Furthermore, the DAC chip proportionally scales down the voltage through the 0-5V voltage and outputs a 0-28V voltage after passing through an amplifying circuit, which is used to power the car controller.

[0007] Furthermore, the control area includes a power switch for starting the device, a power voltage display screen for displaying the internal battery voltage, a DC12V charging interface for charging the internal battery, a mode switching switch for switching different modules, a voltage detection terminal and IN+ for detecting the voltage of the right terminal by jumper wiring, and a detection terminal for outputting a restoration voltage.

[0008] Furthermore, the processing chip adopts the chip STM32F103VET6, and communicates with the DAC chip through the DATA data line and CLK clock signal, RST reset signal, and LD write signal of the processing chip. The DATA data line is used to transmit data, the CLK clock signal is used to switch different DAC chips, the RST reset signal is used to reset the DAC chip, and the LD write signal is used to write data into the register of the DAC chip.

[0009] Furthermore, the DAC chip uses chip BU2506FV, in which VA1~10 pins are output ports, which can output analog voltage converted according to the digital voltage sent by the processing chip, and its DATA pin, CLK pin, RST pin, and LD pin together constitute a data signal line.

[0010] Furthermore, the wireless module adopts an ESP32 module, which is connected to the processing chip to realize wireless remote data reception.

[0011] Furthermore, the amplification circuit adopts a common-phase amplifier composed of resistors R1, R2, R3, R4 and operational amplifier U1, wherein resistor R1 is used to protect the circuit, resistors R2 and R3 are used to control the output voltage amplification factor, resistor R4 is used to limit the output circuit to protect the circuit, and operational amplifier U1 adopts LAM358 chip; the relationship between input voltage Ui and output voltage Uo is Uo=(1+R3 / R2)*Ui, and the specific detection point input signal enters the operational amplifier U1 through resistor R1 to amplify the voltage, and then outputs it to the detection terminal through resistor R4.

[0012] Furthermore, a box cover is provided on the box body through a hinged component, and the control area and the interface area are covered together when the box cover is closed.

[0013] The utility model mainly includes a wireless module, a processing chip, a DAC chip, an amplifying circuit and other parts. The received remote data is sent to the processing chip for analysis through the wireless module, and the DAC chip is controlled to output a proportionally reduced primary voltage, and then the voltage in the remote data is restored through the amplifying circuit to meet the voltage requirements in the car controller. The whole process is closer to the real scene, which is conducive to students understanding and learning the real operation steps and improving teaching efficiency. The definition of each terminal interface in the interface area depends on the received data, and can be adapted to different models and different modules. In this way, the computer in the traditional teaching system can be replaced, thereby reducing the teaching cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the application of the prior art;

[0015] Figure 2 This is a schematic diagram of the application of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the plan layout of the utility model;

[0018] Figure 5 This is the circuit schematic diagram of the utility model;

[0019] Figure 6 This is the schematic diagram of the amplifier circuit;

[0020] Figure 7 This is a flowchart of the processing flow of the utility model;

[0021] Figure 8 It is a schematic diagram of the processing flow of the utility model.

[0022] In the figure, 1 is the teaching and training panel, 2 is the control area, 3 is the interface area, 4 is the terminal interface, 11 is the wireless module, 12 is the processing chip, 13 is the DAC chip, and 14 is the amplifier circuit. DETAILED DESCRIPTION

[0023] In this embodiment, refer to Figure 2-Figure 6The vehicle data restoration detection device includes a box body (not shown), on which a teaching and training panel 1 is arranged. The teaching and training panel 1 is provided with a control area 2, an interface area 3, a control circuit and a circuit diagram of a high-voltage circuit structure of a car. The interface area 3 has a plurality of terminal interfaces 4 for leading out the detection circuit required by the car. The definition of each detection terminal depends on the received data and can be adapted to different vehicle models and different modules; the control circuit includes a wireless module 11, a processing chip 12, a DAC chip 13 and an amplifying circuit 14. The wireless module 11 sends the received remote data to the processing chip 12. The processing chip 12 parses the data and controls the DAC chip 13 to output a primary voltage corresponding to the proportional reduction, and then restores the voltage in the remote data through the amplifying circuit 14.

[0024] Since the DAC chip 13 can only output a maximum voltage of 5V, the voltage is proportionally reduced through the 0-5V voltage and then outputs a 0-28V voltage after passing through an amplifier circuit, which is used to power the car controller.

[0025] The control area 2 includes a power switch for starting the device, a power voltage display screen for displaying the internal battery voltage, a DC12V charging interface for charging the internal battery, a mode switch for switching different modules, a voltage detection terminal and IN+ for detecting the voltage of the right terminal by jumper wiring, and a detection terminal for outputting a restoration voltage.

[0026] The processing chip 12 (i.e., U1.1) uses the chip STM32F103VET6, and communicates with the DAC chip through the DATA data line of the processing chip 12 and the CLK clock signal, RST reset signal, and LD write signal. The DATA data line is used to transmit data, the CLK clock signal is used to switch different DAC chips, the RST reset signal is used to reset the DAC chip, and the LD write signal is used to write data into the register of the DAC chip 13.

[0027] The DAC chip 13 (ie UA1) uses the chip BU2506FV, wherein the VA1 to VA10 pins are output ports, which can output analog voltages converted from the digital voltages sent by the processing chip, and its DATA pin, CLK pin, RST pin, and LD pin together constitute a data signal line.

[0028] The wireless module 11 adopts an ESP32 module and is connected to the processing chip 12 to realize wireless remote data reception.

[0029] The amplifier circuit 14 uses a common-mode amplifier composed of resistors R1, R2, R3, R4 and an operational amplifier U1, wherein resistor R1 is used to protect the circuit, resistors R2 and R3 are used to control the output voltage amplification factor, resistor R4 is used to limit the output circuit to protect the circuit, and the operational amplifier U1 uses a LAM358 chip; the relationship between the input voltage Ui and the output voltage Uo is Uo=(1+R3 / R2)*Ui, and the specific detection point input signal enters the operational amplifier U1 through the resistor R1 to amplify the voltage, and then outputs it to the detection terminal through the resistor R4.

[0030] A box cover (not shown) is also provided on the box body through an articulated component (such as a hinge, etc.), and when the box cover is closed, the control area 2 and the interface area 3 are covered together.

[0031] Reference Figure 7 and Figure 8 , the working process of the utility model is as follows:

[0032] S1, the wireless module 11 receives the data transmitted remotely and sends the data to the processing chip 12;

[0033] S2, the processing chip 12 processes the data and parses the voltage value in the data;

[0034] S3, the processing chip 12 scales down the voltage value to obtain a primary voltage of 0 to 5V, and sends it to the DAC chip 13;

[0035] S4, after receiving the primary voltage, the DAC chip 13 performs digital-to-analog conversion on it and outputs the voltage;

[0036] S5, the amplifier circuit 14 amplifies the input primary voltage in equal proportion and outputs a voltage of 0 to 28V, restores the voltage value in the data received at the beginning, and finally outputs it to the detection terminal.

[0037] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A vehicle data restoration detection device, comprising a box, characterized in that: A teaching and training panel is arranged on the box body, and the teaching and training panel is provided with a control area, an interface area, a control circuit and a circuit diagram of a structure of an automobile high-voltage circuit. The interface area has a number of terminal interfaces for leading out the required detection circuits; the control circuit includes a wireless module, a processing chip, a DAC chip, and an amplifying circuit. The wireless module sends the received remote data to the processing chip, the processing chip parses the data, and controls the DAC chip to output a primary voltage corresponding to the proportional reduction, and then restores the voltage in the remote data through the amplifying circuit.

2. The vehicle data restoration detection device according to claim 1, characterized in that: The DAC chip proportionally reduces the voltage through the 0-5V voltage and then outputs a 0-28V voltage after passing through the amplifier circuit, which is used to power the car controller.

3. The vehicle data restoration detection device according to claim 1, characterized in that: The control area includes a power switch for starting the device, a power voltage display screen for displaying the internal battery voltage, a DC12V charging interface for charging the internal battery, a mode switching switch for switching different modules, a voltage detection terminal and IN+ for detecting the voltage of the right terminal by jumper wiring, and a detection terminal for outputting a restoration voltage.

4. The vehicle data restoration detection device according to any one of claims 1 to 3, characterized in that: The processing chip uses the chip STM32F103VET6, and communicates with the DAC chip through the DATA data line of the processing chip and the CLK clock signal, RST reset signal, and LD write signal. The DATA data line is used to transmit data, the CLK clock signal is used to switch different DAC chips, the RST reset signal is used to reset the DAC chip, and the LD write signal is used to write data into the register of the DAC chip.

5. The vehicle data restoration detection device according to claim 4 is characterized in that: The DAC chip uses chip BU2506FV, in which VA1~10 pins are output ports, which can output analog voltage converted according to the digital voltage sent by the processing chip. Its DATA pin, CLK pin, RST pin, and LD pin together constitute the data signal line.

6. The vehicle data restoration detection device according to claim 5, characterized in that: The wireless module uses the ESP32 module, which is connected to the processing chip to achieve wireless remote data reception.

7. The vehicle data restoration detection device according to claim 6, characterized in that: The amplifier circuit uses a common-phase amplifier composed of resistors R1, R2, R3, R4 and operational amplifier U1, wherein resistor R1 is used to protect the circuit, resistors R2 and R3 are used to control the output voltage amplification factor, resistor R4 is used to limit the output circuit to protect the circuit, and operational amplifier U1 uses LAM358 chip; the relationship between the input voltage Ui and the output voltage Uo is Uo=(1+R3 / R2)*Ui, and the specific detection point input signal enters the operational amplifier U1 through the resistor R1 to amplify the voltage, and then outputs it to the detection terminal through the resistor R4.

8. The vehicle data restoration detection device according to claim 1, characterized in that: A box cover is also arranged on the box body through a hinged component, and the control area and the interface area are covered together when the box cover is closed.

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