Assembled switch based on local internet bus line of controller of automobile

Abstract

The invention relates to a combined switch based on a local internet bus of a car controller, belonging to the technical field of car electric control. The invention comprises a set of normal open detection switches and a set of controllable detection switches, wherein, a switch state detection circuit converts switch state signals into micro-processing unit readable signals; a controllable power supply circuit receives the control signals of a micro-processing unit to control the on and off state of the power supply of the switch state detection circuit in operation; the micro-processing unit reads the output signals of the switch state detection circuit, codes the message frame of the signals according to the transfer protocol, converts the level signals, which are used to code the message frame, according to the car CAN bus protocol, and sends out control signals according to the state of the key gear switch in the normal open detection switches; a bus interface establishes communications between the micro-processing unit with a bus communication module and a communication bus. The invention has the advantages of easy control of the car electrical system, optimizing wiring sling, and saving space and static power consumption, and lengthening the time of the idling state of the car.

Description

technical field [0001] The invention relates to a combination switch based on the local Internet bus of an automobile controller, belonging to the technical field of automobile electronic control. Background technique [0002] In the traditional automobile body electrical system, the electric load of the automobile is connected in series with the switch, or the load is connected in series with the relay of the electric appliance controlled by the switch. Through the on-off operation of the switch button, the power on-off control of the load is realized. [0003] In the electrical system of modern automobile body, bus technology is applied more and more. In a car using bus technology, its electrical appliances and switches are no longer in the traditional series relationship, but the switch state is converted into a digital signal and sent through the bus, and the electrical appliance receives the control signal from the bus and executes its due working state. The applicati...

AI Technical Summary

Problems solved by technology

[0004] At the same time, in a car using bus technology, a large number of controllers will easily increase the static power consumption of the vehicle. In the design of modern controllers, more and more emphasis is placed on reducing energy consumption and static power consumption to further save energy.

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