Control method and device for whole vehicle controller cruise system of electric vehicle

A vehicle controller and cruise system technology, which is applied to the vehicle controller cruise system control, and the device field for realizing the method, which can solve the problems such as lack of functions of the cruise system

Inactive Publication Date: 2011-05-25
QIMING INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention discloses a control method for a cruise system of a vehicle controller of an electric veh

Method used

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  • Control method and device for whole vehicle controller cruise system of electric vehicle
  • Control method and device for whole vehicle controller cruise system of electric vehicle
  • Control method and device for whole vehicle controller cruise system of electric vehicle

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Experimental program
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Effect test

Embodiment 1

[0048] The cruise system control device is mainly composed of MCU, CAN transceiver, cruise switch sampling circuit, cruise button detection circuit, brake pedal sampling circuit and accelerator pedal sampling circuit. Wherein, the AD module 1 of the MCU cooperates with the cruise switch sampling circuit to collect the cruise switch signal to determine whether to enter the cruise control mode. After entering the cruise control mode, the CAN communication module of the MCU is connected to the CAN bus interface of the vehicle controller VCU after the level conversion of the CAN transceiver, and reads the messages related to the vehicle speed, gear position and driving status of the VCU to determine the cruise control mode. Control Method. Cruise speed adjustment buttons are divided into: "+" and "-". "+" is connected to GPIO1 of the MCU after passing through the cruise button filter circuit 1. "—" is connected to GPIO2 of the MCU after the cruise button filter circuit 2. The M...

Embodiment 2

[0050] Such as image 3 Shown: The signal receiving pin CAN_RXD and the signal transmitting pin CAN_TXD of the CAN communication module of the MCU are connected with the signal receiving pin RXD and the signal transmitting pin TXD of the CAN transceiver to complete the TTL level transmission of the CAN bus; The CANH terminal and CANL terminal of the device are connected with the CAN bus interface CANH terminal and CANL terminal of the VCU to complete the differential level transmission of the CAN bus, thus realizing the conversion between TTL level and differential level.

[0051] The cruise switch sampling circuit is mainly composed of a cruise switch and a filter circuit 1. The opening and closing of the cruise switch will cause a voltage change of 0~12V at the input terminal of the filter circuit 1. Output voltage of 0~5V for AD1 of MCU to collect. where the cruise switch V Sout It is the switch state output terminal, connected to the V of the filter circuit 1 in On the ...

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Abstract

The invention discloses a control method and device for a whole vehicle controller cruise system of an electric automobile, and the method comprises the following steps: reading cruise switching signals of the electric automobile, and judging whether the electric automobile enters into a cruise control mode by using an analog-to-digital conversion module of a microcontroller; reading messages regarding the whole vehicle dynamic information, and connecting a communication module of the microcontroller, subjected to level switch, with a communication interface of the whole vehicle controller to determine a cruise control method; connecting a cruise speed adjusting button with an universal input/output interface of the microcontroller by a filter circuit, and determining a cruise speed set value; connecting brake pedal signals with the analog-to-digital conversion module by a sampling circuit, and determining the brake information of a driver; and connecting accelerator pedal signals with the analog-to-digital conversion module by a sampling circuit, determining the accelerator pedal opening, and setting the cruise speed according to a control policy. By using the control method and device of the whole vehicle controller cruise system of the electric vehicle, the cruise system controlling can be run stably and efficiently, thus providing a hardware platform controlled by the cruise system for the whole vehicle controller, and compensating performance lack of the whole vehicle controller in the field of the cruise system controlling.

Description

technical field [0001] The invention discloses a control method for a cruise system of a vehicle controller of an electric vehicle, and also provides a device for realizing the method, belonging to the technical field of new energy vehicle control. Background technique [0002] At present, the vehicle controller of the existing electric vehicle mainly has the following functions: control the power-on and power-off logic of the vehicle, dispatch and manage the motor control system and battery management system, and it is responsible for the collection and processing of vehicle information and the realization of vehicle control strategies, etc. important task. Due to the heavy workload, traditional vehicle controllers often do not have cruise control functions. As a result, the cruise control function of most electric vehicles is missing. Although a small number of electric vehicles have the control function of the cruise system, this function is often integrated on the cont...

Claims

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Application Information

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IPC IPC(8): B60W30/14
Inventor 吴畏拱印生姜鹏邓向斌董冰
Owner QIMING INFORMATION TECH
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