Visual portable automobile instrument detection box

Abstract

The invention discloses a visual portable automobile instrument detection box, and belongs to the technical field of automobile instrument testing, the detection box designs a corresponding to-be-tested icon through a touch screen interface according to a to-be-tested function of a to-be-tested automobile instrument, a to-be-tested function button is clicked, and a touch screen sends a to-be-tested function signal instruction to a main control module through an RS232 port; the master control module processes the signal instruction into a corresponding CAN signal and sends the CAN signal to an instrument to be detected, or processes the signal instruction and sends the signal instruction to the 32-path relay module through an RS485 port, and the 32-path relay module pulls in a relative relay and sends an electric signal to the instrument to be detected. The problems that an existing detection box is inconvenient to carry, a computer is needed to serve as an upper computer to send instructions, non-integration is achieved, and a toggle switch is damaged and needs to be maintained due to long-term use of the toggle switch are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile instrument testing, and specifically relates to a visual portable automobile instrument testing box. Background Art

[0002] With the rapid development of the automotive industry, new challenges have been raised for the testing process of automotive instrument production and the later problem troubleshooting on actual vehicles. Currently, most test boxes are fixed on the production line for testing, and the corresponding functions are tested through the dial switch. The dial switch may be damaged after long-term use. For instruments that have been installed in the car cab, it is very troublesome to troubleshoot problems.

[0003] A few visual test boxes need to be connected to a computer, and the computer is used to send signal instructions to the test box. In addition, corresponding test boxes must be produced for different models of automobile instruments, which leads to a long production cycle. The same test box cannot be reused, resulting in a waste of resources. In order to solve the above problems, the present invention provides the following technical solutions. Summary of the invention

[0004] The purpose of the present invention is to provide a visual portable automobile instrument detection box. Through the touch screen interface, the corresponding icon to be tested is designed according to the function to be tested of the automobile instrument to be tested. When the function button to be tested is clicked, the touch screen sends the signal instruction of the function to be tested to the main control module through the RS232 port; the main control module processes the signal instruction into a corresponding CAN signal and sends it to the instrument to be tested, or processes the signal instruction and sends it to the 32-way relay module through the RS485 port. The 32-way relay module attracts the corresponding relay and sends the electrical signal to the instrument to be tested. This solves the problems that the current detection box is inconvenient to carry, requires a computer as a host computer to send instructions, is non-integrated, and the toggle switch is damaged due to long-term use, and needs to be repaired.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A visual portable automobile instrument detection box, including a main control module, a touch screen, a 32-way relay module and a power supply;

[0007] The touch screen adopts a serial port screen. The touch screen directly sets the screen through the host computer software, and customizes the component instructions. Clicking the serial port screen component can send the corresponding instruction to the main control module;

[0008] The main control module processes the signal sent by the touch screen, and then sends the processed signal sent by the touch screen to the instrument to be detected or to the 32-way relay module in the form of a CAN signal;

[0009] After receiving the signal sent by the main control module, the 32-way relay module closes the corresponding relay and sends the electrical signal to the instrument to be tested, simulating the hard-wire signal on the real vehicle;

[0010] The power supply provides power to each module.

[0011] As a further solution of the present invention, the main control module adopts

[0012] The STM32F407VET6 industrial board is the control core.

[0013] As a further solution of the present invention, it comprises a box body, on which a rubber handle, an interface between the detection box and the instrument to be detected, a lithium battery charging interface, a touch screen and a detection box switch are arranged;

[0014] The detection box is connected to the interface of the instrument to be tested and the relay of the 32-way relay module;

[0015] The detection box and the interface of the instrument to be tested are also connected to the CAN-H\CAN-L lines of the STM32F407VET6 industrial board;

[0016] As a further solution of the present invention, the main control module is connected to the touch screen module and communicates via an RS232 interface, and the main control module is connected to the 32-way relay and communicates via RS485.

[0017] As a further solution of the present invention, the instrument to be tested is an instrument controlled by a CAN signal.

[0018] As a further solution of the present invention, the instruments to be detected include indicator lights, vehicle speed, instrument oil level, water temperature, engine oil, and hard-line signals.

[0019] The invention also discloses the application of a visual portable automobile instrument detection box in the endurance cycle test of an instrument controlled by a CAN signal.

[0020] Beneficial effects of the present invention:

[0021] 1. The present invention provides an integrated detection box and installs a handle on the top of the box body. The entire device is light and portable, and is more flexible to use, and can adapt to automobile instrument detection in non-industrial production scenarios;

[0022] 2. The present invention can achieve a detection box that can detect a variety of different instruments by changing the upper computer interface and writing the CAN signal list information of the instrument into the main control module according to different instruments, and has a wider detection range;

[0023] 3. The host computer of the present invention adopts a touch screen, which solves the problem that the current detection box needs to use a computer to send instructions and the button switch is easy to be damaged. The human-computer interaction is more intuitive and simple, and there is no need to connect to a computer device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 This is a principle block diagram of a visual portable automobile instrument detection box of the present invention;

[0026] Figure 2 This is a structural schematic diagram of a visual portable automobile instrument detection box of the present invention;

[0027] Figure 3 It is the 32-way relay function interface of the present invention;

[0028] Figure 4 The signal indicator light interface of the present invention;

[0029] Figure 5 It is the durability cycle test interface of the present invention;

[0030] Figure 6 It is the instrument pointer interface of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Depend on Figure 1 It can be seen that the present invention is a visual portable automobile instrument detection box comprising a main control module, a touch screen, a power supply and a 32-way relay module;

[0033] The main control module uses the STM32F407VET6 industrial board as the control core, mainly processes the signal sent by the touch screen, and then sends the processed signal sent by the touch screen to the instrument to be tested in the form of a CAN signal or to the 32-way relay module through the RS485 port;

[0034] The touch screen adopts a serial port screen, which can directly set the screen through the host computer software, and can customize the component instructions. Click the serial port screen component to send the corresponding instruction to the main control module through the RS232 port;

[0035] After the 32-way relay module receives the signal sent by the main control module through RS485 communication, the corresponding relay is energized and the electrical signal is sent to the instrument to be tested, simulating the hard-wire signal on the real vehicle;

[0036] The power source is a rechargeable 12V universal lithium battery pack, which reduces the 12V voltage to 5V through a step-down module to supply power to each module.

[0037] Before testing the instrument, first turn on the switch button in front of the test box to power on the test box and perform self-test. Then connect the instrument to be tested to the test box interface, and start the instrument by clicking the IGN button on the touch screen to simulate the car's ON gear state.

[0038] When the instrument under test receives the signal from the detection box, it will execute the corresponding signal logic; when using the detection box for detection, you can click the corresponding button to perform a single function detection, or you can click the full-automatic detection on the touch screen. The detection sequence will be carried out in sequence according to the program design.

[0039] When in full-automatic detection mode, for CAN signal related function detection, the detection box detects one function in a 1s period; for hard line signal related function detection, the detection box detects one function in a 2s period to prevent frequent signal transmission and cause touch screen signal blockage.

[0040] When in full-automatic detection mode, the touch screen will display the function being detected. If there is no problem, the next function will be detected. If there is a problem when detecting the current module, the detection will stop and the detection abnormality window will pop up on the touch screen.

[0041] The present invention provides a portable visual automobile instrument detection box. Figure 2 As shown, 1 is a rubber handle, 2 is an interface between the detection box and the instrument to be detected, 3 is a lithium battery charging interface, 4 is a touch screen, 5 is a detection box switch, and 6 is a box body.

[0042] The 1-32 of the instrument interface to be tested on the left side of the box body is connected to the 1-32 relay of the 32-way relay module;

[0043] The left side of the box body is connected to the instrument interface 33, 34 to be tested and is connected to the CAN-H\CAN-L line of the STM32F407VET6 industrial board;

[0044] like Figure 3 In the figure, there is a 32-way relay function interface, which can control the corresponding function relay to be attracted and disconnected. The content of this interface can be changed according to the hard-wire signal function of different instruments to simulate different hard-wire signals on the actual vehicle.

[0045] like Figure 4In the figure, it is the signal indicator function interface. The functions of this interface are all communicated through CAN signals. When the automatic detection is performed, the current function icon is detected and the function icon is highlighted. After the detection is passed, the original icon is restored.

[0046] like Figure 5 In the middle, it is the endurance cycle test interface, which can set the test time, detect voltage and current, and can feedback static current, remaining detection time, alarm light, indicator light, and battery status.

[0047] like Figure 6 In the middle, it is the instrument pointer interface, which can detect whether the index of the instrument dial is normal. By converting digital quantities into analog quantities, it can detect engine speed, fuel level, engine oil, battery power, water tank water temperature, and vehicle speed.

[0048] A visual portable automobile instrument detection box in this embodiment can realize the detection of automobile instruments on the production line and installed on the vehicle through a main control module, a touch screen, a 32-way relay module and a power supply, and there is no need to carry a laptop computer as a signal source, which greatly saves human resources and improves detection efficiency.

[0049] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. A visual portable automobile instrument detection box, characterized in that: Includes main control module, touch screen, 32-way relay module and power supply; The touch screen adopts a serial port screen. The touch screen directly sets the screen through the host computer software, and customizes the component instructions. Clicking the serial port screen component can send the corresponding instruction to the main control module; The main control module processes the signal sent by the touch screen, and then sends the processed signal sent by the touch screen to the instrument to be detected or to the 32-way relay module in the form of a CAN signal; After receiving the signal sent by the main control module, the 32-way relay module closes the corresponding relay and sends the electrical signal to the instrument to be tested, simulating the hard-wire signal on the real vehicle; The power supply provides power to each module.

2. A visual portable automobile instrument detection box according to claim 1, characterized in that: The main control module uses the STM32F407VET6 industrial board as the control core.

3. A visual portable automobile instrument detection box according to claim 2, characterized in that: The box body comprises a rubber handle, an interface between the test box and the instrument to be tested, a lithium battery charging interface, a touch screen and a test box switch; The detection box is connected to the interface of the instrument to be tested and the relay of the 32-way relay module; The detection box and the interface of the instrument to be tested are also connected to the CAN-H\CAN-L lines of the STM32F407VET6 industrial board.

4. A visual portable automobile instrument detection box according to claim 3, characterized in that: The main control module is connected to the touch screen module and communicates via an RS232 interface. The main control module is connected to the 32-way relay and communicates via RS485.

5. The visual portable automobile instrument detection box according to claim 1 is characterized in that: The instrument to be tested is an instrument controlled by a CAN signal.

6. The visual portable automobile instrument detection box according to claim 1 is characterized in that: The instruments to be tested include indicator lights, vehicle speed, instrument oil level, water temperature, engine oil, and hard-line signals.

7. Application of a visual portable automobile instrument detection box according to any one of claims 1 to 6 in a durability cycle test of an instrument controlled by a CAN signal.

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