Engine rotating speed regulating device based on controller area network (CAN) and method

Abstract

The invention discloses an engine rotating speed regulating device based on controller area network (CAN). The output end of a clutch state signal of a vehicle clutch controller of the engine rotatingspeed regulating device is connected with the clutch state input end of a CAN controller through an opto-coupler isolation step-down module, the output end of a brake state signal of a vehicle brakecontroller is connected with the input end of the brake state signal of the CAN controller through the opto-coupler isolation step-down module, the communication end of an engine rotating speed request TCS1 message format sequence transistor-transistor logic (TTL) signal of the CAN controller is connected with the communication end of the engine rotating speed request TCS1 message format sequenceTTL signal of a CAN transceiver through a photon coupled isolator, and the communication end of an engine rotating speed request TCS1 message format sequence CAN bus differential signal of the CAN transceiver is used for being connected with the communication end of a CAN bus of an engine electronic control unit (ECU) through a vehicle CAN network. According to the engine rotating speed regulatingdevice based on the CAN, the engine rotating speed outputs steadily, and guarantee is provided for the vehicle chassis electric and power taking requirements for equipment on the vehicle.

Description

technical field [0001] The present invention relates to the field of CAN (Controller Area Network, CAN, Controller Area Network) bus technology, in particular to a CAN-based engine speed regulating device and method. Background technique [0002] The traditional speed adjustment device adopts the method of disconnecting the original vehicle throttle signal input, and connecting the microcontroller to simulate the throttle, and inputting a voltage signal to adjust the engine speed. This control strategy has a great impact on the original vehicle throttle signal and affects the driving performance of the vehicle. And safety, low stability, poor reliability, generally used in parking situations. Contents of the invention [0003] The invention provides a CAN-based engine speed adjustment device and method. The invention aims to realize high-precision, stable and more reliable control of the running speed of the vehicle-mounted engine under driving and parking conditions, and ...

AI Technical Summary

Problems solved by technology

[0002] The traditional speed adjustment device adopts the method of disconnecting the original vehicle throttle signal input, and connecting the microcontroller to simulate the throttle, and inputting a voltage signal to adjust the engine speed. This control strategy has a great impact on the original vehicle throttle signal and affects the driving performance of the vehicle. And safety, low stability, poor reliability, generally used in parking situations

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