CN201820127U - Hybrid electric vehicle vehicle-mounted fault diagnosis system based on CANopen - Google Patents

Abstract

The utility model relates to a hybrid electric vehicle vehicle-mounted fault diagnosis system based on CANopen, which belongs to the technical field of vehicle fault diagnosis. The system comprises a fault diagnosis interface, an information acquisition module, a memory module, a master control module, a power module, a liquid crystal display module, a sound alarm module, a touch screen and a keyboard module, wherein the system is implanted with a CANopen protocol, and is connected with a vehicle-mounted CANopen network via the fault diagnosis interface. In the utility model, an embedded type microprocessor is used as a master control chip, and the liquid crystal display is used as a main human-computer interaction interface, so the system has low cost, simple interface, small size, is convenient to install, is powerful, realizes the function of vehicle-mounted fault diagnosis, and can monitor and display the real-time data of a vehicle.

Description

Hybrid vehicle vehicle-mounted fault diagnosis system based on CANopen

Technical field

The utility model relates to the hybrid vehicle vehicle-mounted fault diagnosis system based on CANopen, belongs to automobile mounted fault diagnosis field.

Background technology

Along with the Hyundai Motor industrial expansion, the automotive electronics degree improves day by day, Auto Electronic Controlled System (fuel injection system, the explosion-proof dead system of braking, air bag etc.) is on the increase, the additional mixing power vehicle has increased equipment such as accumulator, motor on the basis of orthodox car, the technology scientific and technological content is than higher, and structure is complicated more.The system that these are complicated makes the maintenance of automobile become very difficult.For the ease of maintenance and monitoring, in the controller of automotive control system, generally all having designed self-diagnostic function is the On-Board Diagnostics (OBD) function.Refer to the real-time diagnosis that the diagnostic device that utilizes on the car carries out, diagnostic message is with real-time being stored in the storer of the form of failure code, and breaks down by the malfunction indicator lamp driver.If driver and maintenance personal think the reason of knowing that in detail which partly breaks down and breaks down, must read diagnostic trouble code by failure diagnostic apparatus to the maintenance station, contrast the specific explanations that corresponding vehicle servicing manual or the fault code table of diagnosis on the handbook obtain this diagnostic trouble code then, and the step of detection failure and the method for fixing a breakdown.In order to adapt to above-mentioned needs, be necessary to develop a kind of vehicle-mounted fault diagnosis system based on hybrid vehicle, can either carry out the monitoring of car load, traditional vehicle-mounted fault diagnosis system is combined with the function of failure diagnostic apparatus.When fault takes place, storage that onboard diagnostic system is real-time and demonstration failure message.For slight fault, the driver can settle a dispute by the parties concerned themselves according to failure message, accomplishes the timely eliminating of fault, prevents the generation of accident.For catastrophic failure, the maintenance personal can obtain more detailed failure message by this fault diagnosis system, with timely definite fault happening part, has reduced the complexity of maintenance.

In recent years, the CAN network has been widely used on the automobile, and CANopen has been put into European standard as current application upper-layer protocol comparatively widely, has been widely used in fields such as automotive electronics in Europe.Also do not propose based on the fault detection system for automobile of CANopen at home at present.

Summary of the invention

Technical problem to be solved in the utility model is the hybrid vehicle fault diagnosis system that proposes based on CANopen, this diagnostic system is based on the CANopen upper-layer protocol, carry out car fault diagnosis by car load CANopen network, solved the compatibling problem with each electronic control unit of vehicle, adopt embedded microprocessor as main control chip, 7 cun liquid crystal touch screens are as main Man Machine Interface, it is low to have cost, and interface is simple, and volume is little, be convenient to install characteristics such as powerful.

The utility model is by the following technical solutions:

Hybrid vehicle vehicle-mounted fault diagnosis system based on CANopen is characterized in that: comprising:

1) diagnostics interface links to each other vehicle-mounted CAN open network by diagnose interface with information acquisition module;

2) information acquisition module is used for each ECU (electronic control unit) and main control module CANopen network communication;

3) memory module is used for stored programme, CANopen communications protocol, vehicle information and failure message;

4) LCD MODULE is used to show malfunction indicator lamp, and the monitoring of detailed failure message and vehicle real time data shows;

5) audio alert module is used for the auditory tone cues alarm of failure message;

6) touch-screen and Keysheet module are used for the switching of display interface, realize man-machine interaction;

7) main control module, it is the core of total system, adopting the TMS320DM355 of the ARM926EJ-S kernel of TI company is main control chip, this module is by program and CANopen agreement in the operation memory module, the CANopen message of accessible information acquisition module, realization is to car load CANopen Network Management and to the parsing of CANopen message, get access to failure message and vehicle real time data, failure message is put into memory module, the brilliant display module of displaying contents liquor charging is carried out auditory tone cues with fault alarm information sending voice alarm module simultaneously, and the human-machine interactive information of reception touch-screen and Keysheet module etc.;

8) power module is used to the total system power supply.

By diagnostics interface vehicle-mounted CAN open network is connected with system, memory module, LCD MODULE, audio alert module, touch-screen and Keysheet module, information acquisition module are connected alternately with main control module respectively.

According to different fault ranks, in LCD MODULE, the different colours pilot lamp glimmers respectively in the fault display interface.The red led flicker as long as take place once just to trigger in a most serious class; An inferior serious class fault only takes place just to make the yellow indicator lamp flicker in twice continuous driving process, and the storage failure sign indicating number; Instantaneous minor failure, the green indicating lamp flicker.

When system detects catastrophic failure, by CANopen network control engine management system and automatic gear-box control module, the limiting engine rotating speed, with vehicle-speed limit at 10km/H.

Compare with existing automotive diagnostic system, the utility model can be obtained following technique effect:

The hybrid vehicle fault diagnosis system that the utility model provides based on CANopen, since adopted embedded microprocessor as main control chip and 7 cun liquid crystal touch screens as Man Machine Interface, with respect to the computer system of using in the existing fault diagnosis technology, it is little to have volume, cost is low, is convenient to the advantage of installing more.Native system has been realized the function of vehicle mounted failure on the one hand, can monitor demonstration to the vehicle real time data simultaneously.Because based on the CANopen agreement, more efficient with the communication of each ECU, diagnosis communication is standard more, diagnosis effect is good.The utility model stores the information of different automobile types in memory module in addition, can carry out vehicle and select, and is applicable to domestic and international various vehicle, has increased the usable range of system.

Description of drawings

Fig. 1 is based on the system architecture diagram of the hybrid vehicle vehicle-mounted fault diagnosis system of CANopen;

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

As shown in Figure 1, the diagnostics interface that this diagnostic system comprises, information acquisition module, memory module, LCD MODULE, audio alert module, touch-screen and Keysheet module, main control module, power module, each module concrete function is:

Diagnostics interface comprises the automobile CAN-bus interface.By diagnose interface diagnostic system is linked to each other with whole vehicle-mounted CAN open network.

Information acquisition module is used for each electronic control unit and main control module CANopen network communication.

Memory module is used for stored programme, CANopen agreement, vehicle information and failure message.Adopt the NAND FLASH of 512Mbyte.

LCD MODULE is used to show malfunction indicator lamp, failure message, vehicle real time data.Adopt 7 cun resolution to create AT070TN83V.1 model LCDs for 800*480 group.

The audio alert module is used for the warning and the auditory tone cues of failure message and real-time vehicle information.Adopt TVL320AIC33IZQE Audio Processing chip, sound signal is through power amplifier, by two stereo loudspeaker outputs.

Touch-screen and Keysheet module are used for the switching of display interface, realize man-machine interaction.Employing is attached to 7 cun 4 wire resistance type touch-screen and some function buttons on liquid crystal display surface.

The main control module, it is the core of total system, adopting the TMS320DM355 of the ARM926EJ-S kernel of TI company is main control chip, this module is by program and CANopen agreement in the operation memory module, the CANopen message of accessible information acquisition module, realization is to car load CANopen Network Management and to the parsing of CANopen message, get access to failure message and vehicle real time data, failure message is put into memory module, with the brilliant display module of displaying contents liquor charging, and the human-machine interactive information of reception touch-screen and Keysheet module etc.

Power module adopts vehicle-mounted lead accumulator power supply, and some wide voltage input dc powers of process are steadily pressed, conversion chip, and the voltage of output 1.8V, 3.3V, 5V and 12V is powered to system.

As shown in Figure 2,, system is linked to each other with vehicle-mounted CAN open network, and mount the system to the vehicle appropriate location, make things convenient for driver's operation to use by diagnostics interface.During first the use, need set vehicle and communications protocol by touch-screen and Keysheet module.Behind the automobile starting, the diagnostic system main control module carries out analyzing and processing to the information of vehicles that acquisition module collects, when detecting fault, storage failure information, do not show failure message and failure message is carried out audio alert, not and can carry out corresponding operating by other electronic control unit of CANopen network control according to the fault rank.When not having fault to take place, the monitoring that this equipment can also carry out the vehicle real time data shows.Driver or maintenance personal can by touch-screen and Keysheet module, carry out the switching between display interface according to actual needs.

For reference such scheme and implementation method or improving on this basis and the product and the scheme based on the hybrid vehicle fault diagnosis system of CANopen of conversion, all belong to the protection domain of claim described in the utility model.

Claims (1)

1. based on the hybrid vehicle vehicle-mounted fault diagnosis system of CANopen, it is characterized in that: comprising:

1) diagnostics interface links to each other vehicle-mounted CAN open network by diagnose interface with information acquisition module;

2) information acquisition module is used for each electronic control unit ECU and main control module CANopen network communication;

3) memory module is used for stored programme, CANopen communications protocol, vehicle information and failure message;

4) LCD MODULE is used to show malfunction indicator lamp, and the monitoring of detailed failure message and vehicle real time data shows;

5) audio alert module is used for the auditory tone cues and the alarm of failure message;

6) touch-screen and Keysheet module are used for the switching of display interface, realize man-machine interaction;

7) main control module is the core of total system, and adopting the TMS320DM355 of the ARM926EJ-S kernel of TI company is main control chip;

8) power module is used to the total system power supply;

By diagnostics interface vehicle-mounted CAN open network is connected with system, memory module, LCD MODULE, audio alert module, touch-screen and Keysheet module, information acquisition module are connected alternately with main control module respectively.

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