A vehicle cruise control system and constant speed cruise method

Abstract

The invention provides a cruise control system and a cruise control method which are developed on the basis of an indirect mode. The cruise control system comprises a cruise switch and a conversion module. The cruise switch is connected to the conversion module, and the conversion module is connected to an engine management system by a vehicular CAN (control area network) bus, is communicated with the engine management system on the basis of a CAN bus protocol, is connected to an instrument management system by a data transmission hard wire and is communicated with the instrument management system via PWM (pulse width modulation) signals. The cruise control system and the cruise control method have the advantages that the DP (data processing) 0 conversion module, the engine management system and the instrument control system are integrated and matched with one another, cruise control manipulation signals are converted into Can signals by the conversion module, then the Can signals are transmitted to the engine management system, current cruise state signals fed by the engine management system are analyzed by the conversion module to generate the PWM signals, and then the PWM signals are transmitted to the vehicular instrument control system via the hard wire, so that instrument indicator lamps can work and use the PWM signals, and the application range of the cruise control system to various types of vehicles can be greatly expanded.

Description

technical field [0001] The invention relates to the field of automotive electronics, and more specifically to a vehicle-mounted cruise control system and a constant-speed cruise method. Background technique [0002] The working principle of the cruise control system is simply that the cruise control component reads the pulse signal sent by the vehicle speed sensor and compares it with the set speed, so as to issue instructions to ensure the most accurate fuel supply for the vehicle at the set speed. To keep the vehicle at the set speed all the time. The electronic multifunctional cruise control system eliminates the mechanical control part of the cable-type cruise control, and completely adopts precise electronic control to make the control more precise and avoid the risk of mechanical failure. At present, the cruise control function of many automobile configurations is realized based on a direct method, and all signal communication is based on the CAN bus, including the in...

AI Technical Summary

Problems solved by technology

This makes the application range of the existing cruise control device greatly limited. For example, for the car models whose vehicle instrument control is not suitable for Can communication, this constant speed cruise device cannot be used, because the display instrument in it cannot display the constant speed cruise control in real time. state, so the communication control method of the existing cruise control device limits its scope of application

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