CN221507371U

CN221507371U - Embedded central test diagnosis system for heavy-duty car

Info

Publication number: CN221507371U
Application number: CN202323359448.6U
Authority: CN
Inventors: 刘保国; 高锦; 刘振; 南子渊
Original assignee: Shaanxi Heavy Duty Automobile Co Ltd
Current assignee: Shaanxi Heavy Duty Automobile Co Ltd
Priority date: 2023-12-11
Filing date: 2023-12-11
Publication date: 2024-08-09
Anticipated expiration: 2033-12-11

Abstract

The utility model discloses an embedded central test diagnosis system of a heavy-duty car, which comprises a single-chip microcomputer, an LCD display screen, a combination switch and a plurality of controllers, wherein the controllers are connected with the single-chip microcomputer through a CAN bus, and the LCD display screen and the combination switch are both electrically connected with the single-chip microcomputer. According to the utility model, the controllers are integrated on one combination instrument, multiple modules of multiple vehicles can be detected through one combination instrument, the applicability is improved, the LCD display screen is used for displaying the detection state, and the combination switch is used for controlling the page.

Description

Embedded central test diagnosis system for heavy-duty car

Technical Field

The utility model belongs to the field of automobile testing and fault diagnosis, and particularly relates to an embedded central test diagnosis system for a heavy-duty automobile.

Background

With the development of automobile electronic technology, technologies such as an electronic fuel injection engine, an automatic transmission, an ABS, an electric control suspension and the like are widely applied to modern heavy-duty automobiles. The application of the new technologies promotes the continuous development of the heavy-duty car industry, simultaneously makes the car control system become more and more complex, tends to bring about the increase of maintenance difficulty, and the traditional maintenance mode can not adapt to the maintenance requirement of the modern heavy-duty car. In order to meet the application requirements of modern heavy-duty car maintenance, car subsystem suppliers all develop special fault diagnosis equipment and self-diagnosis systems for own subsystem assemblies. At present, most of the self-diagnosis systems of the subsystem assemblies are fault lights or flash codes for diagnosis, and the special diagnosis equipment is mostly only used as special equipment for service personnel of the subsystem assembly suppliers. Although the self-diagnosis system and the special diagnosis equipment of the subsystem assembly reduce the maintenance difficulty of the modern heavy-duty car, certain disadvantages exist, and the main disadvantages are as follows:

The method has the following defects: the subsystem assembly has various self-diagnosis operation modes, and the self-diagnosis operation devices are distributed and distributed, so that the maintenance personnel are not convenient to maintain.

The following two disadvantages: when a self-diagnosis mode is adopted, a maintainer is required to look at the flashing light in a full-concentration mode, and in order to avoid error in flashing code reading, repeated confirmation of the flashing code is often required, so that the maintenance efficiency of the vehicle is affected.

And the following three disadvantages: for the fault type which can be diagnosed only by special diagnosis equipment, the fault type can be only completed by after-sales service personnel of the subsystem assembly, and the repair time of the vehicle is not shortened.

Disclosure of utility model

In order to overcome the defects of the prior art, the design of an embedded central test diagnosis system of a heavy-duty car is very necessary and urgent.

The utility model provides an embedded central test diagnosis system for a heavy truck, which is used for displaying test information and fault information of each subsystem of the truck on a combination instrument in a centralized manner so as to solve the problems.

In order to solve the problems in the prior art, the utility model adopts the following technical scheme:

An embedded central test diagnosis system for a heavy-duty car comprises a single-chip microcomputer, an LCD display screen, a combination switch and a plurality of controllers.

And the controllers are connected with the single chip microcomputer through the CAN bus.

The LCD display screen and the combined switch are electrically connected with the single chip microcomputer.

The multiple controllers are integrated on the combined instrument, multiple modules of multiple vehicles can be detected through the combined instrument, applicability is improved, the LCD display screen is used for displaying detection states, and the combined switch is used for controlling pages.

Further, the system comprises an LCD driving circuit, the single chip microcomputer is electrically connected with an LCD display screen through the LCD driving circuit, the suspension controller, the vehicle body controller, the tire central inflation and deflation controller (central inflation and deflation controller), the engine controller, the transmission controller and the ABS controller collect port information of corresponding executors and system running state data sensed by corresponding sensors, the data are sent to a data bus, and the single chip microcomputer receives and analyzes bus data information of the suspension controller, the vehicle body controller, the tire central inflation and deflation controller, the engine controller, the transmission controller and the ABS controller, and the combined instrument displays running state information of each subsystem of the vehicle in a centralized mode by means of the display screen of the combined instrument, wherein the running state information comprises fault information and the like.

Further, the CAN bus comprises a vehicle body bus and a power bus, the controller comprises a suspension controller, a vehicle body controller, a central air charging and discharging controller, an automatic transmission controller, an engine controller and a braking anti-lock controller, the singlechip is electrically connected with the suspension controller, the vehicle body controller and the central air charging and discharging controller through the vehicle body bus, and is electrically connected with the automatic transmission controller, the engine controller and the braking anti-lock controller through the power bus, and the controller further comprises a buzzer, and the buzzer is electrically connected with the singlechip.

Further, the LED driving circuit also comprises a stepping motor driving circuit and an LED control circuit, and the stepping motor driving circuit and the LED control circuit are electrically connected with the single chip.

The beneficial effects of the utility model are as follows:

According to the utility model, the test fault information of the suspension, the vehicle body, the central inflation and deflation of the tire, the engine, the transmission and the ABS system of the vehicle is displayed on the combined instrument information display screen in a centralized manner, the fault code of the vehicle can be conveniently checked through the page turning operation of the combined instrument information display screen, the fault position can be rapidly determined, the embedded test diagnosis function of the vehicle is enhanced, and the convenience and the maintenance efficiency of the fault maintenance of the vehicle are improved.

Drawings

FIG. 1 is a schematic view of the apparatus of the present utility model;

FIG. 2 is a bus network diagram of the present utility model;

Fig. 3 is a schematic diagram of the present utility model.

Detailed Description

The utility model is further described with reference to the drawings and reference numerals.

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

The terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

Example 1:

as shown in fig. 1 and 3, an embedded central test diagnosis system for a heavy-duty car comprises a single-chip microcomputer, an LCD display screen, a combination switch and a plurality of controllers.

The controllers are integrated on the combination instrument, and a plurality of modules of a plurality of vehicles can be detected through the combination instrument, so that the applicability is improved.

The LCD display screen is used for displaying the detection state, and the combined switch is used for controlling the page.

Example 2:

on the basis of embodiment 1, the LCD driving circuit is further included, and the singlechip is electrically connected with the LCD display screen through the LCD driving circuit.

The suspension controller, the vehicle body controller, the tire central inflation and deflation controller (central inflation and deflation controller), the engine controller, the transmission controller and the ABS controller collect port information of corresponding actuators and system running state data sensed by corresponding sensors, and send the data to the data bus.

The singlechip receives and analyzes bus data information of the suspension controller, the vehicle body controller, the tire central inflation and deflation controller, the engine controller, the transmission controller and the ABS controller.

The combined instrument displays the running state information of each subsystem of the vehicle in a centralized way by means of the display screen, wherein the running state information comprises fault information and the like.

Example 3:

On the basis of embodiment 2, as shown in fig. 2, the CAN bus includes a vehicle body bus and a power bus.

The controller includes a suspension controller, a body controller, a central charge-discharge controller, an automatic transmission controller, an engine controller, and a brake antilock controller.

The single chip microcomputer is electrically connected with the suspension controller, the vehicle body controller and the central inflation/deflation controller through a vehicle body bus, and is electrically connected with the automatic transmission controller, the engine controller and the brake anti-lock controller through a power bus.

The device also comprises a buzzer, wherein the buzzer is electrically connected with the singlechip.

The suspension controller, the vehicle body controller, the tire central inflation/deflation controller, the engine controller, the transmission controller and the ABS controller collect the input port information of the executor and subsystem running state data perceived by the sensor in real time and send a state data message to the CAN bus; the state data comprise power driving port state information of the controller driving actuator and subsystem state information acquired by the sensor; the combination instrument can simultaneously receive vehicle body bus and power bus message information with different transmission rates; the message receiving protocol of the combination instrument is the same as the message sending protocol of the suspension controller, the vehicle body controller, the tire central inflation and deflation controller, the engine controller, the transmission controller and the ABS controller, and the parameter analysis is carried out according to the message sending protocol of the controller; the combination instrument can finish page turning display of state information by means of page turning up, page turning down and menu selection confirmation operation of the menu combination switch.

Example 4:

On the basis of embodiment 3, the LED driving circuit further comprises a stepping motor driving circuit and an LED control circuit, and the stepping motor driving circuit and the LED control circuit are electrically connected with the single chip.

The suspension controller is used for acquiring information of a suspension sensor and a suspension actuator; the suspension controller collects state data of the suspension system in real time and sends state data messages to the bus, and the suspension controller can be 1 or more.

The suspension controller collects state data of the suspension system in real time and sends state data messages to the bus, and the suspension controller can be 1 or more.

The vehicle body controller collects state data of the vehicle body system in real time and sends state data messages to the bus, and the vehicle body controller can be 1 or more.

The central tire inflation and deflation controller collects state data of the central tire inflation and deflation system in real time and sends state data messages to the bus, and the central tire inflation and deflation controller can be 1 or more.

The automatic transmission controller collects state data of the transmission system in real time and sends a state data message to the bus.

The ABS controller collects the state data of the ABS in real time and sends a state data message to the bus, and the number of the ABS controllers can be 1 or more.

The controller has a control function and CAN be used for monitoring level signals of a controller driving port and a controller data acquisition port, converting the level signals into CAN bus digital signals and sending the CAN bus digital signals to a bus in a message form for analysis and display of a combination instrument; the combined switch is used for transmitting an electric signal to the combined instrument and is used for upward page turning, downward page turning and menu item selection confirmation operation of a state information display screen of the combined instrument; the combined instrument is used for receiving the electric signals sent by the combined switch and the bus message signals sent by the controller, receiving the electric signals sent by the combined switch to control the combined instrument state information display screen to turn up pages, turn down pages and confirm menu item selection, and receiving the bus message signals sent by the controller to analyze the state data information of each subsystem for display use by the combined instrument.

The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model.

Claims

1. An embedded central test diagnosis system of a heavy truck is characterized in that: the device comprises a singlechip, an LCD display screen, a combination switch and a plurality of controllers;

the controllers are connected with the single chip microcomputer through a CAN bus;

2. The heavy-duty car embedded central test diagnostic system of claim 1, wherein: the LCD driving circuit is further included, and the singlechip is electrically connected with the LCD display screen through the LCD driving circuit.

3. The heavy-duty car embedded central test diagnostic system of claim 1, wherein: the CAN bus comprises a vehicle body bus and a power bus;

the controller comprises a suspension controller, a vehicle body controller, a central charging and discharging controller, an automatic transmission controller, an engine controller and a braking anti-lock controller;

4. The heavy-duty car embedded central test diagnostic system of claim 1, wherein: the device also comprises a buzzer, wherein the buzzer is electrically connected with the singlechip.

5. The embedded central test and diagnostic system for a heavy truck according to claim 3, wherein: also comprises a stepping motor driving circuit and an LED control circuit, the stepping motor driving circuit and the LED control circuit are electrically connected with the single-chip microcomputer.