Electronic control system for automobile body

Abstract

The utility model relates to the technical field of automobile electronic control, in particular to an automobile body electronic control system which comprises a plurality of first control modules and a plurality of second control modules, and each first control module and each second control module are in communication connection through a first communication line and are applied to a controlled object in a matched mode. And each first control module is used for forming communication connection with the vehicle body control module, so that one first control module and one second control module can be matched to independently control one controlled object, and the problem that one control module controls a plurality of controlled objects in the prior art is solved. Taking the automobile door as a controlled object, compared with the prior art that one control module controls a plurality of automobile doors, communication between a large number of wire harnesses and one automobile door control module in a long distance can be reduced, the layout of the automobile body electronic control system is optimized, and the wire harness layout on the automobile body is more concise.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile electronic control technology, concretely relates to an automobile body electronic control system. BACKGROUND

[0002] Automobile body electronic control includes automatic adjustment seat system, intelligent headlamp system, automobile night vision system, door control system etc., and each system needs to control multiple execution mechanisms. Taking the door control system as an example: the controlled object is a door, multiple execution mechanisms exist in the door to control the door correspondingly, for example, window lifting, door lock switch etc., and multiple execution mechanisms all need to be connected to the door control module through a wire harness, and in the prior art, one door control module is used to control multiple door execution mechanisms, leading to numerous wire harnesses at the door. Secondly, one door control module controls multiple doors simultaneously, and the distance between doors is far, no matter where the door control module is installed, some execution mechanisms inevitably are far away from the door control module, making the wire harness too long, and also leading to a large number of wire harnesses arranged on the automobile body. In addition, the door control module for controlling multiple doors is powered through a power input module, when the power input module fails, multiple door execution mechanisms controlled by the door control module cannot work normally, and the system will collapse. SUMMARY

[0003] The utility model aims at providing an automobile body electronic control system to solve the problem of unreasonable layout of the prior art automobile body electronic control system leading to numerous wire harnesses and inconvenient use.

[0004] To achieve the above object, the technical scheme of the utility model is as follows: an automobile body electronic control system, comprising multiple first control modules and multiple second control modules, each first control module is used to form communication connection with a body control module, one first control module and one second control module are applied to a controlled object, the first control module and the second control module applied to the same controlled object form communication connection through a first communication line, and one first control module and any other first control module form communication connection through a second communication line.

[0005] In one embodiment, the controlled object is a door, the first control module is a door control module, and the second control module is a window module.

[0006] In one embodiment, the door control modules are divided into a main door control module and at least one auxiliary door control module, the main door control module and each auxiliary door control module are applied to a door respectively, and the main door control module is communicatively connected with any auxiliary door control module through the second communication line.

[0007] In one embodiment, the door control modules are four for controlling four doors, including a main door control module and three auxiliary door control modules, the main door control module is a left front door control module, and the auxiliary door control modules are a right front door control module, a left rear door control module and a right rear door control module respectively.

[0008] In one embodiment, the first communication line is a LIN communication line, and the second communication line is a CAN communication line.

[0009] In one embodiment, any first control module is communicatively connected with a body control module through the second communication line.

[0010] In one embodiment, each first control module is connected to a power supply module respectively, so that each first control module is powered independently.

[0011] The utility model has the advantages of:

[0012] Firstly, the utility model discloses a plurality of first control modules and second control modules are arranged to control each controlled object independently, so that the first control module and the second control module can be arranged close to the controlled object, the first communication line is used to form unified communication between the first control modules applied to different controlled objects, and the door is taken as the controlled object as an example: compared with the prior art that one control module controls a plurality of doors, a large number of wire harnesses can be prevented from communicating with one door control module at a long distance, the layout of the automobile body electronic control system is optimized, and the wire harness layout on the automobile body is more simple.

[0013] Secondly, the first control module and the second control module applied to the same controlled object are close to each other, the first communication line is used to form communication connection, the length of the communication line can be shortened, and the number of wire harnesses can be reduced; and the second communication line is used to form communication connection between the first control modules far away from each other, through the diversified communication connection mode, the communication strength and the cost of the communication wire harness can be considered.

[0014] Thirdly, each first control module is connected to a power supply module respectively, so that the first control modules are powered independently, especially when the first control modules are used for door control, the problem that the power supply module in the prior art affects the work of all doors when the power supply module is faulty can be avoided, and system collapse can be prevented. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a control logic framework diagram of the embodiment of the utility model. DETAILED DESCRIPTION

[0016] To further illustrate the embodiments, the utility model provides with the drawings. These drawings are part of the utility model disclosure, which mainly serves to illustrate the embodiments, and can be combined with the relevant description of the specification to explain the operation principle of the embodiments. With reference to these contents, those skilled in the art should understand other possible embodiments and the advantages of the utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0017] The utility model discloses a kind of automobile body electronic control systems, including respectively applied to multiple controlled objects multiple first control module and multiple second control module, each first control module is respectively used to form communication connection with body control module, any one first control module and any one second control module are commonly applied to a controlled object, the first control module and the second control module applied to the same controlled object form communication connection by first communication line, one of the first control module and other any first control module form communication connection by second communication line respectively.

[0018] Referring to Figure 1 As shown in the drawing, taking the vehicle door as the controlled object for example: the first control module is the vehicle door control module DCM (Door Control Module), for controlling vehicle door lock etc., the second control module is the vehicle window module window lifter (hereinafter referred to as "WL"), its actuator is lifting motor, for controlling vehicle window lifting etc., each vehicle door is equipped with a vehicle door control module DCM and a vehicle window module WL. The vehicle door of the embodiment is four, which is left front door, right front door, left rear door and right rear door respectively, correspondingly, the vehicle door control module DCM is also four, which is left front door control module DCM-FL, right front door control module DCM-FR, left rear door control module DCM-RL and right rear door control module DCM-RR. Left front door control module DCM-FL is main vehicle door control module, and the remaining three are all auxiliary vehicle door control modules.

[0019] The left front door control module DCM-FL can control the window lifting of the right front door, the left rear door and the right rear door through communication with the sub door control modules in addition to controlling the window lifting of the left front door through the window module WL, while the door control module DCM of other doors can only control the window lifting of the door. In order to realize this function, the left front door control module DCM-FL is connected with other door control modules (the right front door control module DCM-FR, the left rear door control module DCM-RL and the right rear door control module DCM-RR) through the second communication line, and the door control module DCM and the window module WL of the same door are connected through the first communication line. In addition, the left front door is provided with a left front window lifting button (FL Window lifter button), a right front window lifting button (FR Window lifter button), a left rear window lifting button (RL Window lifter button), a right rear window lifting button (RR Window lifter button) and a window lifting lock button (Window lifter lock button), so that the user can control the lifting of the corresponding window and the locking of all windows by pressing the corresponding button on the left front door. Other doors are provided with corresponding window lifting buttons to control the window lifting of the door.

[0020] In the embodiment, the first communication line is a LIN communication line, and the second communication line is a CAN communication line. For the door control modules DCM that are far away from each other, the CAN communication line with strong anti-interference ability is used for communication, and for the window module WL and the door control module DCM that are close to each other, the LIN line with small volume and low cost is used for communication. However, the communication mode of the body electronic control system is not limited to the LIN communication and the CAN communication, and FlexRay communication or Ethernet communication can also be used, and the specific communication mode is selected by the person skilled in the art according to actual needs.

[0021] The doors in the embodiment are four, and the left front door is the main driver door, but are not limited thereto. According to different vehicle models, the number of doors can also be two or six or other numbers, and the door controlled by the main door control module is not limited to the left front door, and the door controlled by the main door control module can also be the right front door.

[0022] In order to prevent any one door control module DCM from affecting the control of other doors, each door control module DCM is connected to the body control module, specifically, each door control module DCM is connected to the body control module through CAN communication lines to form CAN communication connection. The body control module is the main control module of the body electronic control system, and controls each part of the body, such as adjusting the seat, the light, the air conditioner, etc. by connecting to each sub-module (the door control module DCM in the embodiment is a sub-module for controlling the door). In addition, it is not limited to connecting each door control module DCM to the body control module separately, and only one or more door control modules DCM can be connected to the body control module according to actual needs.

[0023] The utility model discloses a plurality of first control module and second control module are set up to control each controlled object separately, thereby can set first control module and second control module in the position of being close to controlled object, is applied to the first communication line between the first control module of different controlled object and forms unified communication, and the embodiment is four door control modules DCM and four car window modules WL, and one door control module DCM and one car window module WL cooperate and control one door, relative to the prior art in which one control module controls multiple doors, a large number of wire harnesses can be reduced to communicate with one door control module over a long distance, and the layout of the automobile body electronic control system is optimized, so that the wire harness layout on the body is more simple.

[0024] For the first control module and the second control module applied to the same controlled object, the distance is close, the LIN communication with small volume and low cost is used, the number of wire harnesses at the door can be reduced, and for the first control modules with a long distance, the CAN communication with strong anti-interference ability is used to ensure the communication efficiency, form diversified communication modes, and give consideration to the communication strength and the cost of the communication wire harness.

[0025] The controlled object of the above embodiment is a door, and in other embodiments, the controlled object can also be other parts of the automobile body system, for example, a seat, and the first control module and the second control module can be used for controlling seat position adjustment and seat ventilation heating, respectively.

[0026] Although the utility model is specifically shown and introduced in combination with the preferred embodiment, those skilled in the art should understand that the remaining unexplained part is prior art, and various changes made to the utility model in form and detail without departing from the spirit and scope of the utility model defined in the appended claims, all fall within the protection scope of the utility model.

Claims

1. An electronic control system for an automobile body, characterized in that: It includes multiple first control modules and multiple second control modules. Each first control module is used to form a communication connection with the body control module. A first control module and a second control module are used together to apply to a controlled object. The first control module and the second control module applied to the same controlled object are connected to each other through a first communication line. Each first control module is connected to each other through a second communication line.

2. The automotive body electronic control system according to claim 1, characterized in that: The controlled object is a car door, the first control module is a car door control module, and the second control module is a car window module.

3. The automotive body electronic control system according to claim 2, characterized in that: The door control module is divided into a main door control module and at least one secondary door control module. The main door control module and each of the secondary door control modules are applied to a door. The main door control module forms a communication connection with any of the secondary door control modules through the second communication line.

4. The automotive body electronic control system according to claim 3, characterized in that: The door control module comprises four modules for controlling the four doors, including one main door control module and three secondary door control modules. The main door control module is the left front door control module, and the secondary door control modules are the right front door control module, the left rear door control module, and the right rear door control module.

5. The automotive body electronic control system according to claim 1, characterized in that: The first communication line is a LIN communication line, and the second communication line is a CAN communication line.

6. An automotive body electronic control system according to claim 1 or 5, characterized in that: Each of the first control modules establishes a communication connection with the body control module via the second communication line.

7. The automotive body electronic control system according to claim 1, characterized in that: Each of the first control modules is connected to the power supply module, so that each of the first control modules forms an independent power supply.

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