CN201235796Y

CN201235796Y - Communication system for automobile

Info

Publication number: CN201235796Y
Application number: CNU2008201113859U
Authority: CN
Inventors: 刘慧军; 朱恩利; 王飞; 李武斌; 王平
Original assignee: SAIC Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2007-12-27
Filing date: 2008-04-18
Publication date: 2009-05-13
Anticipated expiration: 2018-04-18

Abstract

The utility model discloses a vehicle communication system which comprises a supplementary instrument, a rainfall sensor, a burglary-resisting horn, a left front glass lifting module, a rear vehicle body controller, a right front glass lifting module, a steering system, a tire pressure system, a brake system, an engine control system, an instrument, an air bag, a gearbox, an air conditioner and a steering angle module. The vehicle communication system is characterized in that all modules are respectively connected with each other through a CAN bus and an LIN bus. Because of adopting the structure, the vehicle communication system has the advantages that: firstly, the resource can be more effectively and completely utilized by adopting the two prior most perfect network bus systems of the CAN and the LIN, and the cost is saved; secondly, three network channels are adopted, the network channels are reasonably allocated aiming at the characteristics of different communication systems, the load factor of the network is controlled within reasonable range, and the real-time of the network communication is strengthened.

Description

A kind of automobile-used communication system

Technical field

The utility model relates to the automobile communication field, particularly a kind of automobile-used communication system.

Background technology

Along with auto-industry development with rapid changepl. never-ending changes and improvements, and use a large amount of control electronicss on automobile, driven the development of the especially automobile mounted network communication of automotive electronic industry greatly, the development kind of automobile bus is also various day by day and perfect.CAN BUS is as the guardian technique of electronic network system integration, use starting than later in the automobile bus technology of China, do not studied fully at present yet and used widely, current domestic independent development network-bus also is in the stage of fumbling, especially the mutual communication of technological development that combines with concrete vehicle and multiple network shortcoming relatively all such as research of realizing information sharing.

In traditional In-vehicle networking, communication modes is more single, the network channel of realizing information sharing is also limited, and each system is different to the rate requirement of information communication in car load, the rate requirement of power chassis system is than higher, and it is comfortable lower with the rate requirement Body Control aspect, the network topology structure of traditional single-rate has been wasted the communication resource, and expand comparatively complicated, the increase of offered load rate causes unstable networks and causes accident to take place, and traditional data transfer mode can not satisfy the vehicle needs.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of automobile-used communication system, to reach the simplification of transmission wire harness, optimization communication resources, the reliability of raising system and the purpose of practicality.

For solving the problems of the technologies described above, the technical solution of the utility model is, a kind of automobile-used communication system, comprise additional instrument, rain sensor, anti-theft loudspeaker, left front glass lifting module, back car body controller, right front glass lifting module, steering swivel system, the tire pressure system, brake system, engine management system, instrument, safety air bag, change speed gear box, air-conditioning, the deflection angle module, it is characterized in that: each module is respectively by CAN bus C-CAN, LIN bus LIN1, LIN bus LIN2 interconnects, thereby avoided the sharable quantity of information of traditional single network and single channel network few, the shortcoming that extensibility is low.

A kind of automobile-used communication system, the gateway of described CAN bus C-CAN, LIN bus LIN1, KIN bus LIN2 is integrated in the front body controller, thereby realizes the data exchange of CAN bus and LIN bus.

A kind of automobile-used communication system, its characteristics are to be connected each module by 2 LIN bus LIN1, LIN2 with 1 CAN bus C-CAN.

A kind of automobile-used communication system, described LIN bus LIN1 connects additional instrument, rain sensor, anti-theft loudspeaker and inserts the front body controller; LIN bus LIN2 connects left front glass lifting module, back car body controller, right front glass lifting module and inserts the front body controller, because comfortable lower with Body Control aspect rate requirement, communication resources avoid waste.

A kind of automobile-used communication system, described CAN bus C-CAN connects steering swivel system, tire pressure system, brake system, engine management system, instrument, safety air bag, change speed gear box, air-conditioning, deflection angle module and inserts the front body controller, satisfies the high requirement of power chassis system speed.

A kind of automobile-used communication system, owing to adopt said structure, this system has the following advantages: 1, adopted these two kinds the most perfect present network-bus systems of CAN and LIN, more effectively and fully utilized resource, provided cost savings; 2, adopted three network channels,, reasonably distributed network channel, the load factor of network has been controlled in the reasonable range, strengthened the real-time of network communication at each different communication system characteristics.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail;

Fig. 1 is a kind of automobile-used communication system network topology structure figure of the utility model;

In Fig. 1,1, additional instrument; 2, rain sensor; 3 anti-theft loudspeakers; 4, left front glass lifting module; 5, back car body controller; 6, right front glass lifting module; 7, steering swivel system; 8, tire pressure system; 9, front body controller; 10, brake system; 11, engine management system; 12, instrument; 13, safety air bag; 14, change speed gear box; 15, air-conditioning; 16, deflection angle module; 17, gateway; 18, LIN1; 19, LIN2; 20, C-CAN.

The specific embodiment

As shown in Figure 1, a kind of automobile-used communication system, have 17 modules and bus communication in the utility model structure, wherein the high-speed CAN network has 9 nodes, 2 LIN networks have 6 nodes, also have 1 gateway 17 that connects CAN bus and LIN bus to be integrated on the front body controller 9, specifically describe as follows:

Article three, network channel is respectively: the high-speed CAN network channel: speed is 500kbit/s, mainly is made up of steering swivel system 7, tire pressure system 8, brake system 10, engine management system 11, instrument 12, safety air bag 13, change speed gear box 14, air-conditioning 15, deflection angle module 16; Article two, LIN network channel: speed is 9.6kbit/s, and main additional instrument 1, rain sensor 2, anti-theft loudspeaker 3, left front glass lifting module 4, back car body controller 5, right front glass lifting module 6 constitute.The gateway 17 of CAN bus and LIN bus is integrated among the front body controller 9.The data exchange that each network channel is realized between heterogeneous networks by gateway 17 just.

Gateway 17 is interfaces of the signal conversion of CAN network and LIN network, in the body controller 9, the information exchange that CAN, LIN need communicate with one another is come out before being integrated in, and information exchange is divided into two aspects:

(1) conversion of the signal from CAN to LIN tabulation

(2) conversion of the signal from LIN to CAN tabulation

In the LIN network system, article two, the shared gateway 17 of LIN network, front body controller 9 connects rain sensor 2, additional instrument 1 and anti-theft loudspeaker 3 as a network, connect left front door glass lifting module 4, right front glass lifting module 6 and back car body controller 5 and constitute another network, separately two networks help the real-time of communication and the conflict that reduces network.

This programme is by the combination of two kinds of bus CAN and LIN, make that two kinds of buses can realize having complementary advantages, by introducing the network that gateway 17 has been divided into network three relatively independent controls, the reliability and the real-time of communication between each system have been strengthened, saved resource and cost simultaneously, all provided great convenience also for the expansion of whole vehicle functions and change.

In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present utility model and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection domain of the present utility model.

Claims

1, a kind of automobile-used communication system, comprise additional instrument (1), rain sensor (2), anti-theft loudspeaker (3), left front glass lifting module (4), back car body controller (5), right front glass lifting module (6), steering swivel system (7), tire pressure system (8), brake system (10), engine management system (11), instrument (12), safety air bag (13), change speed gear box (14), air-conditioning (15), deflection angle module (16) is characterized in that: each module is respectively by CAN bus C-CAN (20), LIN bus LIN1 (18), LIN bus LIN2 (19) interconnects.

2, a kind of automobile-used communication system according to claim 1 is characterized in that: the gateway (17) of described CAN bus C-CAN (20), LIN bus LIN1 (18), LIN bus LIN2 (19) is integrated on the front body controller (9).

3, a kind of automobile-used communication system according to claim 1 is characterized in that: total system is connected each module by 2 LIN bus LIN1 (18), LIN2 (19) with 1 CAN bus C-CAN (20).

4, a kind of automobile-used communication system according to claim 3 is characterized in that: described LIN bus LIN1 (18) connects additional instrument (1), rain sensor (2), anti-theft loudspeaker (3) and inserts front body controller (9); LIN bus LIN2 (19) connects left front glass lifting module (4), back car body controller (5), right front glass lifting module (6) and inserts front body controller (9).

5, a kind of automobile-used communication system according to claim 3 is characterized in that: described CAN bus C-CAN (20) connects steering swivel system (7), tire pressure system (8), brake system (10), engine management system (11), instrument (12), safety air bag (13), change speed gear box (14), air-conditioning (15), deflection angle module (16) and inserts front body controller (9).