Detection tool for instrument board card of two-wheeled vehicle

Abstract

The utility model relates to a two-wheeled vehicle instrument board card detection tool, an instrument board card comprises a first controller MCU and a first communication protocol circuit connected with the first controller MCU, and the detection tool comprises a second controller MCU, a multipath signal generation circuit, a multipath output detection circuit and at least one path of second communication protocol circuit. The signal input end of the signal generation circuit is connected with the IO interface of the second controller MCU, and the signal output end of the signal generation circuit is connected with the corresponding tail line interface of the instrument board card; a signal input end of the output detection circuit is connected with a corresponding tail line interface of the instrument board card, and a signal output end of the output detection circuit is connected with an IO interface of the second controller MCU; and the second controller MCU is in communication connection with the first communication protocol circuit of the instrument board card through the second communication protocol circuit. The vehicle body signal required by the instrument mainboard can be simulated, the get-on test can be avoided, and the test environment is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument detection, and particularly relates to a detection tool for a two-wheeled vehicle instrument board card. Background Art

[0002] For the main board of the traditional two-wheeled vehicle instrument test fixture, there are problems such as narrow adaptability, complex test methods, and relatively simple test functions, resulting in low factory test efficiency, complex manual operation, and the test fixture cannot meet the new functions added to new products. Content of the Utility Model

[0003] The utility model aims at the technical problems existing in the prior art and provides a detection tool for a two-wheeled vehicle instrument board card.

[0004] The technical solution for the utility model to solve the above technical problems is as follows:

[0005] A detection tool for a two-wheeled vehicle instrument board card, the instrument board card includes a first controller MCU and a first communication protocol circuit connected to the first controller MCU, and the detection tool includes a second controller MCU, a multi-channel signal generation circuit, a multi-channel output detection circuit, and at least one second communication protocol circuit;

[0006] The signal input end of the signal generation circuit is connected to the IO interface of the second controller MCU, and the signal output end is connected to the corresponding tail wire interface of the instrument board card;

[0007] The signal input end of the output detection circuit is connected to the corresponding tail wire interface of the instrument board card, and the signal output end of the output detection circuit is connected to the IO interface of the second controller MCU;

[0008] The second controller MCU is communicatively connected to the first communication protocol circuit of the instrument board card through the second communication protocol circuit.

[0009] Further, the signal generation circuit is implemented based on a MOS transistor Q8 of model 2N7002; the gate of the MOS transistor Q8 is connected to the signal output interface of the second controller MCU through a resistor R81; the source of the MOS transistor Q8 is connected to GND, and an RC buffer circuit is connected between the gate and the source of the MOS transistor Q8; the drain of the MOS transistor Q8 is connected to the corresponding tail wire interface of the instrument board card through a resistor R61 and is connected to the DC working voltage through a pull-up resistor.

[0010] Further, the pull-up resistor is implemented by using two resistors R85 and R87 with the same resistance value connected in parallel.

[0011] Further, the corresponding tail wire interfaces of the instrument panel card connected to the signal generation circuit include: tail wire interfaces for N gear, 1st gear, 2nd gear, 3rd gear, 4th gear, 5th gear, 6th gear, ABS, engine, oil pressure, key 1, key 2, key 3, key 4, left turn, right turn, high beam, position / low beam, rotation speed, voltage-type vehicle speed, current-type vehicle speed, water temperature, oil level, and wireless key trigger.

[0012] Further, the output detection circuit is implemented based on the MOS transistor Q2 of model 2N7002; wherein, the gate of the MOS transistor Q2 is connected to the corresponding tail wire interface of the instrument panel card through the resistor R151 and is connected to the DC operating voltage through the resistor R210; the source of the MOS transistor Q2 is connected to GND, and an RC buffer circuit is connected between the gate and the source of the MOS transistor Q2; the drain of the MOS transistor Q2 is connected to the signal input interface of the second controller MCU through the resistor R149, is connected to the DC operating voltage through the resistor R148, and is connected to the gate of the MOS transistor Q2 through the resistor R181.

[0013] Further, the corresponding tail wire interfaces of the instrument panel card connected to the output detection circuit include: tail wire interfaces for microphone, 5V_OUT output, unlock output, automatic headlight output, and chord sound output.

[0014] Further, the first communication protocol circuit includes one or more of CAN communication, 485 communication, serial communication, one-line communication, and K-line communication, and the second communication protocol circuit matches the first communication protocol circuit.

[0015] Further, the second controller MCU is also communicatively connected to the host computer.

[0016] The beneficial effects of the present utility model are as follows: 1. This detection tooling can simulate the body signals required by the instrument main board, can eliminate the need for on-vehicle testing, simplify the testing environment, and can display the status of the instrument obtaining body signals on the PC side, facilitating direct viewing by personnel.

[0017] 2. It can serve as an inspection tool for the instrument. When there are abnormalities in some functions of the instrument on the vehicle body, manual diagnosis is relatively complex. The detection tooling can be connected to the instrument main board and check each function thereof to quickly diagnose the abnormal function.

[0018] 3. It can also serve as a communication box. When we need to obtain vehicle body data, the protocol interface on the vehicle body can be connected to the detection tooling, and the detection tooling prints the information of obtaining vehicle body data on the PC side through the serial port. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic connection diagram of the detection tooling provided by the embodiment of the present utility model and the instrument panel card;

[0020] Figure 2 Schematic diagram of the oil pressure signal generation circuit provided by the embodiment of the present utility model;

[0021] Figure 3 Schematic diagram of the automatic headlight output detection circuit provided by the embodiment of the present utility model;

[0022] Figure 4 Schematic diagram of the serial communication circuit provided by the embodiment of the present utility model. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0024] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "multiple" means two or more, unless otherwise specifically defined.

[0025] In the description of the present application, the term "for example" is used to mean "serving as an example, illustration, or explanation". Any embodiment described as "for example" in the present application is not necessarily construed as being more preferred or more advantageous than other embodiments. In order for any person skilled in the art to implement and use the present utility model, the following description is given. In the following description, details are set forth for purposes of explanation. It should be understood that those of ordinary skill in the art can recognize that the present utility model can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid unnecessary details from obscuring the description of the present utility model. Therefore, the present utility model is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed in the present application.

[0026] Such as Figure 1As shown, an embodiment of the present invention provides a two-wheeled vehicle dashboard card detection tooling, the dashboard card includes a first controller MCU and a first communication protocol circuit connected to the first controller MCU, the detection tooling includes a second controller MCU, a multi-channel signal generating circuit, a multi-channel output detection circuit and at least one second communication protocol circuit; the signal input end of the signal generating circuit is connected to the IO interface of the second controller MCU, and the signal output end is connected to the corresponding tail line interface of the dashboard card; the signal input end of the output detection circuit is connected to the corresponding tail line interface of the dashboard card, and the signal output end of the output detection circuit is connected to the IO interface of the second controller MCU; the second controller MCU is communicatively connected to the first communication protocol circuit of the dashboard card through the second communication protocol circuit.

[0027] After the dashboard card receives the signal input by the signal generating circuit, the first controller MCU transmits the corresponding feedback status signal back to the detection tooling through the first communication protocol circuit.

[0028] The corresponding tail line interfaces of the dashboard card connected to the signal generating circuit include but are not limited to: N gear, 1 gear, 2 gear, 3 gear, 4 gear, 5 gear, 6 gear, ABS, engine, oil pressure, button 1, button 2, button 3, button 4, left turn, right turn, high beam, position / low beam, speed, voltage type vehicle speed, current type vehicle speed, water temperature, oil level, and wireless button triggered tail line interfaces. The above tail line interfaces are all used to receive corresponding signals input from the outside to trigger the operation of corresponding components of the two-wheeled vehicle.

[0029] In this embodiment, independent signal generating circuits are provided for different tail line interfaces for receiving signals. The second controller MCU of the detection tool generates a signal and outputs a corresponding generating signal through the signal generating circuit, simulating the hard-wired data of the vehicle body system and transmitting it to the main board of the instrument to be tested through the tail line. The structure of each signal generating circuit is the same. This embodiment takes the oil pressure signal generating circuit as an example to introduce the structure of the signal generating circuit. The structure of the oil pressure signal generating circuit is as follows: Figure 2 As shown, the signal generating circuit is implemented based on a 2N7002 MOS transistor Q8. The gate of MOS transistor Q8 is connected to the signal output interface of the second controller MCU via resistor R81. The source of MOS transistor Q8 is connected to GND, and an RC buffer circuit is connected between the gate and source of MOS transistor Q8. The drain of MOS transistor Q8 is connected to the corresponding tail line interface of the instrument panel card via resistor R61, and is connected to the DC operating voltage via a pull-up resistor. The pull-up resistor is implemented using parallel resistors R85 and R87 of equal resistance. Resistors R85 and R87 act as a shunt to prevent the DC operating voltage from burning out the circuit.

[0030] The corresponding tail wire interfaces of the instrument panel card connected to the output detection circuit include, but are not limited to, the tail wire interfaces of the microphone, 5V_OUT output, unlock output, automatic headlight output, and chord tone output. The above tail wire interfaces are all used to output the output signals of the corresponding components of the two-wheeler.

[0031] In this embodiment, an independent output detection circuit is provided for each of the different tail wire interfaces for outputting signals. Specifically, taking the detection of the automatic headlight output signal as an example, the structure of the output detection circuit is introduced. The circuit diagram of the automatic headlight output detection is shown in Figure 3. The output detection circuit is implemented based on the MOS transistor Q2 of the model 2N7002. Among them, the gate of the MOS transistor Q2 is connected to the corresponding tail wire interface of the instrument panel card through the resistor R151 and is connected to the DC working voltage through the resistor R210. The source of the MOS transistor Q2 is connected to GND, and an RC buffer circuit is connected between the gate and the source of the MOS transistor Q2. The drain of the MOS transistor Q2 is connected to the signal input interface of the second controller MCU through the resistor R149, is connected to the DC working voltage through the resistor R148, and is connected to the gate of the MOS transistor Q2 through the resistor R181.

[0032] The first communication protocol circuit includes one or more of CAN communication, 485 communication, serial port communication, one-line communication, and K-line communication, and the second communication protocol circuit matches the first communication protocol circuit.

[0033] It should be noted here that the second communication protocol circuit should at least be completely matched with the first communication protocol circuit. On this basis, in order to adapt to different instrument panel cards, the second communication protocol circuit can be redundantly provided with multiple different communication protocol circuits.

[0034] Figure 4 This is the schematic diagram of the serial port communication circuit structure provided by the embodiment of the present invention. CAN communication, 485 communication, one-line communication, K-line communication, etc. are all conventional technologies in this field and will not be elaborated here.

[0035] The second controller MCU is also communicatively connected to the host computer through the serial port communication protocol, and is used to send corresponding signals, such as the feedback status signal sent by the first controller MCU, the output signal of the output detection circuit, and the communication status signal, etc. to the host computer for display.

[0036] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0037] Obviously, those skilled in the art can make various modifications and variations to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model also intends to include these modifications and variations.

Claims

1. A two-wheeled vehicle dashboard card detection tool, wherein the dashboard card comprises a first controller MCU and a first communication protocol circuit connected to the first controller MCU, characterized in that: The detection tooling includes a second controller MCU, a multi-channel signal generating circuit, a multi-channel output detection circuit and at least one second communication protocol circuit; The signal input end of the signal generating circuit is connected to the IO interface of the second controller MCU, and the signal output end is connected to the corresponding tail line interface of the instrument panel card; The signal input end of the output detection circuit is connected to the corresponding tail line interface of the instrument panel card, and the signal output end of the output detection circuit is connected to the IO interface of the second controller MCU; The second controller MCU is communicatively connected to the first communication protocol circuit of the instrument panel card via the second communication protocol circuit.

2. The detection tool according to claim 1, characterized in that: The signal generating circuit is implemented based on a 2N7002 MOS transistor Q8; the gate of the MOS transistor Q8 is connected to the signal output interface of the second controller MCU via a resistor R81; the source of the MOS transistor Q8 is connected to GND, and an RC buffer circuit is connected between the gate and source of the MOS transistor Q8; the drain of the MOS transistor Q8 is connected to the corresponding tail line interface of the instrument panel card via a resistor R61, and is connected to the DC working voltage via a pull-up resistor.

3. The detection tool according to claim 2, characterized in that: The pull-up resistor is implemented by a resistor R85 and a resistor R87 having the same resistance value connected in parallel.

4. The detection tool according to any one of claims 1 to 3, characterized in that: The corresponding tail line interface of the dashboard card connected to the signal generating circuit includes: N gear, 1st gear, 2nd gear, 3rd gear, 4th gear, 5th gear, 6th gear, ABS, engine, oil pressure, button 1, button 2, button 3, button 4, left turn, right turn, high beam, position / low beam, speed, voltage type vehicle speed, current type vehicle speed, water temperature, oil level, and tail line interface triggered by wireless button.

5. The detection tool according to claim 1, characterized in that: The output detection circuit is implemented based on a 2N7002 MOS transistor Q2. The gate of the MOS transistor Q2 is connected to the corresponding tail line interface of the instrument panel card via a resistor R151 and to a DC operating voltage via a resistor R210. The source of the MOS transistor Q2 is connected to GND, and an RC buffer circuit is connected between the gate and source of the MOS transistor Q2. The drain of the MOS transistor Q2 is connected to a signal input interface of the second controller MCU via a resistor R149, to a DC operating voltage via a resistor R148, and to the gate of the MOS transistor Q2 via a resistor R181.

6. The detection tool according to claim 1 or 5, characterized in that: The output detection circuit is connected to the corresponding tail line interface of the dashboard card, including: microphone, 5V_OUT output, unlock output, automatic headlight output and chord sound output tail line interface.

7. The detection tool according to claim 1, characterized in that: The first communication protocol circuit includes one or more of CAN communication, 485 communication, serial communication, one-line communication, and K-line communication, and the second communication protocol circuit matches the first communication protocol circuit.

8. The detection tool according to claim 1, characterized in that: The second controller MCU is also connected to the host computer for communication.

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