CN202433757U

CN202433757U - Novel vehicle body control network system

Info

Publication number: CN202433757U
Application number: CN201120564606XU
Authority: CN
Inventors: 陈泽坚
Original assignee: Atech Automotive Wuhu Co Ltd
Current assignee: Atech Automotive Wuhu Co Ltd
Priority date: 2011-12-29
Filing date: 2011-12-29
Publication date: 2012-09-12
Anticipated expiration: 2021-12-29

Abstract

The utility model discloses a novel vehicle body control network system. According to the utility model, an engine, a braking system, a combination meter, a driving recording meter, a safe air bag system, an automatic transmission and an air suspension system are respectively connected with a vehicle body controller to form a power CAN (Controller Area Network) network system; a chassis module, a left-door module, a right-door module, a remote diagnosis module, an audio/video system, a tire pressure monitoring module and an air-conditioning system are respectively connected with the vehicle body controller to form a vehicle body network system; through the vehicle body controller, the power CAN network system and the vehicle body network system are in data transmission, and further, the CAN bus and the LIN bus are in conversion transmission. The novel vehicle body control network system adopting the structure has the advantages that 1, the control is convenient, and the control efficiency is improved; and 2, the load is protected, the load service life is prolonged, and the cost is lower.

Description

A kind of novel vehicle body Control Network System

Technical field

The utility model relates to automobile technical field, particularly a kind of novel vehicle body Control Network System.

Background technology

Along with the progress of automotive electronic technology and network technology, in order to realize the electronization control of automobile, satisfy comfortable, the safe and intelligent requirement of car steering, the In-vehicle networking technology has obtained development rapidly.

At present, because control mode is backward relatively, if adopt mature C AN bussing technique, meeting is because the use of hardware such as wire harness is numerous and diverse, resources of chip causes cost high on the Body Control of heavy truck.Simultaneously, start impact in this control mode during load cold conditions, influence the serviceable life of load load and power supply.

The utility model content

The utility model technical matters to be solved is, to the deficiency of prior art, a kind of protection load, novel vehicle body Control Network System cheaply is provided.

For solving the problems of the technologies described above; The technical scheme of the utility model is: a kind of novel vehicle body Control Network System; Comprise car body controller, CAN bus, LIN bus; Also comprise engine, brake system, combination instrument, drive recorder, air bag system, automatic transmission, AIRMATIC Dual Control, chassis module, left-hand door module, right door module, remote diagnosis module, audio video system, tire pressure monitoring module, air-conditioning system; Described engine, brake system, combination instrument, drive recorder, air bag system, automatic transmission, AIRMATIC Dual Control are connected with car body controller respectively; Constitute power CAN network system; Described chassis module, left-hand door module, right door module, remote diagnosis module, audio video system, tire pressure monitoring module, air-conditioning system are connected to form body network system with car body controller respectively; Described car body controller transmits the data between power CAN network system and the body network system alternately, simultaneously the data between CAN bus and the LIN bus is transformed transmission.

Described CAN bus comprises CAN controller and CAN transceiver.

Described car body controller is connected with the CAN controller through microprocessor MCU, is connected with buffer circuit between described CAN controller and the CAN transceiver.

The chip that described microprocessor MCU adopts is STM72F561A.

The utility model adopts said structure, has the following advantages: 1, LIN bus cost is low, single main many from pattern, does not need bus arbitration, need not to change LIN just can be at network increase or deletion of node from the hardware and software of node.This systematic communication network is main with the CAN bus, and the LIN bus is auxilliary, and CAN and LIN mutually combine in automotive communication network and use common framework communications network system, convenient control, and control efficiency improves; 2, protection load improves load serviceable life, and cost is lower simultaneously.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation;

Fig. 1 is the grid topological diagram of the utility model;

Fig. 2 is a CAN node structure block diagram in the utility model;

Fig. 3 is the interface circuit figure of CAN node in the utility model;

Fig. 4 is the interface circuit figure of LIN node in the utility model;

In Fig. 1～Fig. 2,1, car body controller; 2, engine; 3, brake system; 4, combination instrument; 5, drive recorder; 6, air bag system; 7, automatic transmission; 8, AIRMATIC Dual Control; 9, chassis module; 10, left-hand door module; 11, right door module; 12, remote diagnosis module; 13, audio video system; 14, tire pressure monitoring module; 15, air-conditioning system; 16, CAN controller; 17, CAN transceiver; 18, buffer circuit.

Embodiment

Like Fig. 1～a kind of novel vehicle body Control Network System shown in Figure 4; Comprise car body controller 1, CAN bus, LIN bus; Also comprise engine 2, brake system 3, combination instrument 4, drive recorder 5, air bag system 6, automatic transmission 7, AIRMATIC Dual Control 8, chassis module 9, left-hand door module 10, right door module 11, remote diagnosis module 12, audio video system 13, tire pressure monitoring module 14, air-conditioning system 15; Engine 2, brake system 3, combination instrument 4, drive recorder 5, air bag system 6, automatic transmission 7, AIRMATIC Dual Control 8 are connected with car body controller 1 respectively; Constitute power CAN network system, this power CAN network system is mainly being born the information transmission of power section on the car.

Chassis module 9, left-hand door module 10, right door module 11, remote diagnosis module 12, audio video system 13, tire pressure monitoring module 14, air-conditioning system 15 are connected to form body network system with car body controller 1 respectively.Though chassis module and vehicle body module are all the baud rate of 205K/S, in order to obtain better data transmission efficiency and to prevent product up-gradation in the future.Car body controller 1 transmits the data between power CAN network system and the body network system alternately, simultaneously the data between CAN bus and the LIN bus is transformed transmission.The CAN bus comprises CAN controller 16 and CAN transceiver 17.Car body controller 1 is connected with CAN controller 16 through microprocessor MCU, is connected with buffer circuit 18 between CAN controller 16 and the CAN transceiver 17.The chip that microprocessor MCU adopts is STM72F561A.

This novel vehicle body Control Network System provides 4 road CANBUS interfaces, 1 road LINBUS interface altogether, and one road K-Line interface.Wherein CAN BUS interface is sorted out with the load of being hung on the bus, and it is divided into: power section, body portion and diagnosis portion (having an interface to do reservation in four interfaces).The utilization be with CAN2.0 be core based on the express network agreement J1939 on load-carrying vehicle and the passenger vehicle.What one road LINBUS used is the LIN2.0 agreement.

This network is with the network design of class c network and the message transmission rate of data transmission bit rate between 125～1Mb/s less than the Class A Network Mixed Design of 10Kb/s.The topological diagram of whole network is as shown in Figure 1: being divided into is four road CAN networks and one road LIN network.

Four tunnel baud rates are the CAN BUS network portion of 250k: 1, power CAN network system.2, body network system.3, a CAN diagnostic port can be used for the diagnosis of total system, though the shared diagnostics port of whole network this software processes aspect is brought some inconvenience, can save used hardware resource greatly, thereby reduce cost.Simultaneously, use a diagnostics port just can diagnose the state of total system, the convenience of bringing to the user.4, also be the very important point the future of sufficient consideration product in the design, so we also reserve a CAN BUS interface in the network, can be used for expansion in the future.

The node of CAN mainly is made up of MCU, CAN controller and CAN transceiver.For the anti-interference of intensifier circuit, some can increase a buffer circuit (as shown in Figure 2) between controller and transceiver.The CAN node of no gateway effect is selected the MCU that carries the CAN controller for use, STM72F561A for example, and transceiver is selected TJA1050 for use; And the Node B CM that the gateway effect is arranged has selected the bigger series of memory space for use, and transceiver is selected the TJA1040 that can supporting bus wakes up for use.

Message transmission rate is less than the Class A Network LIN (9.6K/S) of 10Kb/s.The function of system's control is many more, and the port that corresponding switch similar and lamp is imported is just many more.With these switch input categories; Constitute the switch element that each can be used as LIN clump node; Like headlamp switch unit, EmS unit, portable lamp switch element, indoor lamp switch element, pilothouse lifting switch element; Car body controller (BCM) forms the LIN network of single main many clumps of patterns as host node, reduces the cost that wire harness is numerous and diverse and resources of chip brings greatly.The interface circuit of LIN node is as shown in Figure 4.

Car body control module BCM serves as the effect of similar gateway in whole network, and it can transmit the data between the heterogeneous networks of phase same rate alternately, simultaneously with different rates CAN and the data between the LIN transform transmission.Reach the data UNICOM of whole network.

Combine accompanying drawing that the utility model has been carried out exemplary description above; Obviously the concrete realization of the utility model does not receive the restriction of aforesaid way; As long as adopted method design of the utility model and the various improvement that technical scheme is carried out; Or directly apply to other occasion without improvement, all within the protection domain of the utility model.

Claims

1. novel vehicle body Control Network System; Comprise car body controller (1), CAN bus, LIN bus; It is characterized in that: also comprise engine (2), brake system (3), combination instrument (4), drive recorder (5), air bag system (6), automatic transmission (7), AIRMATIC Dual Control (8), chassis module (9), left-hand door module (10), right door module (11), remote diagnosis module (12), audio video system (13), tire pressure monitoring module (14), air-conditioning system (15); Described engine (2), brake system (3), combination instrument (4), drive recorder (5), air bag system (6), automatic transmission (7), AIRMATIC Dual Control (8) are connected with car body controller (1) respectively; Constitute power CAN network system; Described chassis module (9), left-hand door module (10), right door module (11), remote diagnosis module (12), audio video system (13), tire pressure monitoring module (14), air-conditioning system (15) are connected to form body network system with car body controller (1) respectively; Described car body controller (1) transmits the data between power CAN network system and the body network system alternately, simultaneously the data between CAN bus and the LIN bus is transformed transmission.

2. a kind of novel vehicle body Control Network System according to claim 1 is characterized in that: described CAN bus comprises CAN controller (16) and CAN transceiver (17).

3. a kind of novel vehicle body Control Network System according to claim 1 and 2; It is characterized in that: described car body controller (1) is connected with CAN controller (16) through microprocessor (MCU), is connected with buffer circuit (18) between described CAN controller (16) and the CAN transceiver (17).

4. a kind of novel vehicle body Control Network System according to claim 1 is characterized in that: the chip that described microprocessor (MCU) adopts is STM72F561A.