CN210405351U

CN210405351U - Vehicle-mounted entertainment system CAN function test tool

Info

Publication number: CN210405351U
Application number: CN201921918848.7U
Authority: CN
Inventors: 黄维权
Original assignee: Shenzhen Nuowida Electric Automobile Co Ltd
Current assignee: Shenzhen Nuowida Electric Automobile Co Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-04-24
Anticipated expiration: 2029-11-08

Abstract

The utility model discloses a vehicle-mounted entertainment system CAN function test instrument, change TTL module, CAN transceiver and button module including treater, power module, USB, the treater respectively with power module USB change TTL module the CAN transceiver reaches button module connects, power module is connected with external power supply, USB changes TTL module and upper computer system connection, the CAN transceiver is connected with vehicle-mounted entertainment host computer. The utility model discloses with low costs, simple to use, compatible CAN signal is forwardded, possess high-speed and two way CAN of low-speed, CAN satisfy different test needs, through host computer system definition button and LED function, and only when using button and LED instruction function, need not to connect host computer system.

Description

Vehicle-mounted entertainment system CAN function test tool

Technical Field

The utility model relates to a vehicle-mounted entertainment system CAN function test instrument.

Background

The vehicle-mounted entertainment system realizes communication with other ECUs of the vehicle body through the CAN, obtains vehicle body state information and displays the vehicle body state information on the host. Generally, as for CAN function test of a vehicle-mounted entertainment system, a loading test is mostly used; connecting a PC end by means of a CAN analyzer, and sending a CAN signal for testing; a customized CAN function test cartridge is used. The test mode needs to provide a test vehicle, the cost is high, and the test environment is not easy to build; the CAN analyzer is expensive, needs testers to know CAN communication protocols and is always connected with a PC (personal computer) terminal, and is inconvenient to operate and high in complexity; the customized CAN test box is used, the function is single, and the problem of function customization and expansion cannot be solved.

Disclosure of Invention

In order to overcome the not enough of current technique, the utility model provides a vehicle-mounted entertainment system CAN function test instrument.

The utility model discloses technical scheme as follows:

a CAN function testing tool of a vehicle-mounted entertainment system is characterized by comprising a processor, a power module, a USB-to-TTL module, a CAN transceiver and a key module, wherein the processor is respectively connected with the power module, the USB-to-TTL module, the CAN transceiver and the key module, the power module is connected with an external power supply, the USB-to-TTL module is connected with an upper computer system, and the CAN transceiver is connected with a vehicle-mounted entertainment host.

According to above scheme the utility model discloses, its characterized in that more includes power source, power source with power module connects, power module passes through power source is connected with external power source.

According to the above scheme the utility model discloses, its characterized in that more includes the USB interface, the USB interface with USB changes the TTL module and connects, USB changes the TTL module and passes through the USB interface with upper computer system connects.

According to above-mentioned scheme the utility model discloses, its characterized in that, the USB interface is Mini USB interface.

According to above scheme the utility model discloses, its characterized in that, the CAN transceiver includes high-speed CAN transceiver and low-speed CAN transceiver.

The utility model according to the above scheme is characterized in that the high-speed CAN interface and the low-speed CAN interface are further included, the high-speed CAN interface is connected with the high-speed CAN transceiver, the low-speed CAN interface is connected with the low-speed CAN transceiver,

the high-speed CAN transceiver is connected with the vehicle-mounted entertainment host through the high-speed CAN interface, or the low-speed CAN transceiver is connected with the vehicle-mounted entertainment host through the low-speed CAN interface.

According to above-mentioned scheme the utility model discloses, its characterized in that still includes the LED pilot lamp module, the LED pilot lamp module with the treater is connected.

According to above-mentioned scheme the utility model discloses, its characterized in that, LED pilot lamp module includes a plurality of LED pilot lamps.

According to the above technical scheme the utility model discloses, its characterized in that, the button module includes a plurality of buttons.

The utility model discloses following beneficial effect has:

1) the utility model discloses a with low costs, possess two way CAN interfaces, contain low-speed CAN interface and high-speed CAN interface, CAN satisfy different test needs.

2) The utility model discloses simple to use, through the definition button function, press the button send corresponding test signal can, can break away from the PC end and use.

3) The utility model discloses the function of expanded each button uses the configuration file that upper computer system generated and wants can dispose the function of each button.

4) The utility model discloses compatible CAN signal is forwardded, at the host computer system send signal of PC end, and CAN function test instrument CAN be according to the agreement analysis and turn into CAN signal transmission and go out for on-vehicle amusement host computer to and give host computer system with the signal that on-vehicle amusement host computer sent according to the agreement passback, realize that host computer system and on-vehicle amusement host computer's information pass each other.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a flow chart of the function customization according to an embodiment of the present invention;

fig. 3 is a block diagram of a signal forwarding process according to an embodiment of the present invention.

Detailed Description

The invention is further described with reference to the following figures and embodiments:

as shown in figure 1, a vehicle-mounted entertainment system CAN function test tool, including treater 1, power module 2, USB changes TTL module 3, the CAN transceiver, button module 4 and LED pilot lamp module 5, treater 1 respectively with power module 2, USB changes TTL module 3, the CAN transceiver, button module 4 and LED pilot lamp module 5 are connected, power module 2 is connected with external power supply, USB changes TTL module 3 and the host computer system connection of PC end, the CAN transceiver is connected with vehicle-mounted entertainment host computer, button module 4 includes a plurality of buttons, LED pilot lamp module 5 includes a plurality of LED pilot lamps. The CAN function test tool sends different CAN signals to the vehicle-mounted entertainment host according to the function definition of the keys, and simultaneously, the CAN function test tool CAN analyze the CAN signals sent by the vehicle-mounted entertainment host, and different LED lamps are lightened according to the function definition of the LED indicator, so as to indicate the functional state of the vehicle body, such as a vehicle door, a vehicle window switch state and the like, and CAN be customized according to requirements.

As shown in fig. 2, the upper computer system configures the signal sent when each key on the CAN function testing tool is pressed and the lighting and flashing conditions of the LED indicator, and after the configuration is completed, the configuration file is automatically generated, and the upper computer system sends the configuration file to the CAN function testing tool, and the CAN function testing tool CAN analyze the content of the configuration file, edit each key and the LED indicator, and implement the function customization of the key and the LED indicator. The configuration file can be stored in the computer at the same time, can be directly loaded, sent and edited, and can be used for configuring a plurality of test boards with the same function by generating one configuration file without repeated configuration, and different configuration files can be loaded for different projects. After the functional configuration of the keys of the CAN functional test tool and the LED indicator lamps is completed, the CAN functional test tool CAN be separated from an upper computer system for use.

As shown in fig. 3, a signal to be transmitted is compiled on the upper computer system, the upper computer system packages the signal according to a defined protocol, the signal is transmitted to the CAN function test tool through the USB to TTL module 3, the CAN function test tool analyzes data, extracts the signal, and transmits the signal and the data to the tested vehicle-mounted entertainment host through the CAN transceiver; therefore, the CAN function testing tool receives CAN signals sent by the tested host computer, packages and sends the CAN signals to the upper computer system, and the upper computer system analyzes the signals after receiving the signals and displays the signals on an interface to realize the function of forwarding the CAN function testing tool signals.

Preferably, the power supply device further comprises a power supply interface, the power supply interface is connected with the power supply module 2, and the power supply module 2 is connected with an external power supply through the power supply interface.

Preferably, the system further comprises a USB interface 31, the USB interface 31 is connected to the USB to TTL module 3, and the USB to TTL module 3 is connected to the upper computer system through the USB interface 31.

Further, the USB interface 31 is a Mini USB interface.

Preferably, the CAN transceivers include a high-speed CAN transceiver 6 and a low-speed CAN transceiver 7. The CAN function test tool further comprises a high-speed CAN interface 61 and a low-speed CAN interface 71, wherein the high-speed CAN interface 61 is connected with the high-speed CAN transceiver 6, and the low-speed CAN interface 71 is connected with the low-speed CAN transceiver 7. The high-speed CAN transceiver 6 is connected with the vehicle-mounted entertainment host through a high-speed CAN interface 61, or the low-speed CAN transceiver 7 is connected with the vehicle-mounted entertainment host through a low-speed CAN interface 71. Two paths of CAN interfaces CAN meet different test requirements.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

The above exemplary description of the present invention is made in conjunction with the accompanying drawings, and it is obvious that the present invention is not limited by the above manner, and various improvements made by the method concept and technical solution of the present invention or by directly applying the concept and technical solution of the present invention to other occasions without improvement are all within the protection scope of the present invention.

Claims

1. A CAN function testing tool of a vehicle-mounted entertainment system is characterized by comprising a processor, a power module, a USB-to-TTL module, a CAN transceiver and a key module, wherein the processor is respectively connected with the power module, the USB-to-TTL module, the CAN transceiver and the key module, the power module is connected with an external power supply, the USB-to-TTL module is connected with an upper computer system, and the CAN transceiver is connected with a vehicle-mounted entertainment host.

2. The CAN function testing tool of claim 1, further comprising a power interface, wherein the power interface is connected to the power module, and the power module is connected to an external power source through the power interface.

3. The CAN function testing tool of claim 1, further comprising a USB interface, wherein the USB interface is connected to the USB-to-TTL module, and the USB-to-TTL module is connected to the upper computer system through the USB interface.

4. The in-vehicle entertainment system CAN function testing tool of claim 1, wherein the USB interface is a Mini USB interface.

5. The in-vehicle entertainment system, CAN, functional testing tool of claim 1 wherein the CAN transceivers comprise a high-speed CAN transceiver and a low-speed CAN transceiver.

6. The CAN function testing tool of claim 5, further comprising a high speed CAN interface and a low speed CAN interface, wherein the high speed CAN interface is connected to the high speed CAN transceiver and the low speed CAN interface is connected to the low speed CAN transceiver,

7. The in-vehicle entertainment system CAN function testing tool of claim 1, further comprising an LED indicator light module, wherein the LED indicator light module is connected to the processor.

8. The in-vehicle entertainment system CAN functionality testing tool of claim 7, wherein the LED indicator light module comprises a plurality of LED indicator lights.

9. The in-vehicle entertainment system CAN functionality test tool of claim 1, wherein the key module comprises a plurality of keys.