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A method for controlling cruise control of a vehicle
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A constant speed cruising and control method technology, applied in the direction of speed/acceleration control, control device, non-electric variable control, etc., can solve the problems of single man-machine interface and insufficient cruise state switching function, so as to achieve reasonable man-machine interface, The control mode is reasonable and perfect, and the effect of ensuring safety
Active Publication Date: 2017-07-21
DONGFENG MOTOR CORP HUBEI
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The control of the traditional cruise function takes place inside the engine management system EMS. The instrument IC does not participate in the control logic, but only serves as a display function. The human-machine interface is relatively simple. In addition, the switching function between various cruise states is not perfect
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[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0042] 本发明的巡航控制模块集成在发动机管理系统EMS中,巡航功能主要由驾驶员按键输入、仪表IC和发动机管理系统EMS共同实现。 Such as figure 1 所示,本发明的仪表IC通过硬线与巡航控制按键连接,通过CAN总线与发动机管理系统EMS连接。仪表IC参与到发动机管理系统EMS完成巡航功能的控制逻辑当中,它不仅可以根据输入的巡航按键信号和发动机管理系统EMS发送的巡航控制状态信号进行巡航请求信号和目标车速信号的输出。还可以对巡航状态以及目标车速进行显示,并在巡航状态处于巡航故障和超车巡航时对驾驶员进行警示,提醒驾驶员安全驾驶。
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Abstract
The invention relates to the field of constant-speed cruise, in particular to an automatic constant-speed cruise control method. The method includes that cruise key signals are inputted into an instrument IC (integrated circuit), an engine management system (EMS) of an automobile sends cruising states of the automobile to the meter IC through a CAN bus, the instrument IC outputs cruise request signals and target automobile speed signals to the EMS through the CAN bus according to the received cruise key signals and the cruising states, and the EMS performs switching of the cruising states according to the received cruise request signals and the target automobile speed signals as well as the automobile states signals. The instrument IC is involved in the EMS in control logic for completing the cruising function, so that burden of the EMS is alleviated; the EMS sends the cruise request signals, the target automobile speed signals and the automobile state signals sent by other automobile modules according to the instrument IC, switching of the cruising states is realized, and the cruise control mode is more reasonable and perfect.
Description
technical field [0001] 本发明涉及汽车定速巡航领域,尤其涉及一种汽车定速巡航控制方法。 Background technique [0002] 汽车在行驶过程中,驾驶员通过油门踏板的开度来控制行驶车速,当汽车在较为平坦的道路上行驶的时候,车速变化不需要做较大的变化,则油门踏板的开度也就需稳定在相应的开度大小不变,驾驶员长时间脚踏在油门踏板上,会给驾驶员带来疲劳感。定速巡航功能可以帮助驾驶员设定汽车的行驶速度,减少驾驶员的疲劳感,同时保持发动机在驾驶过程中扭矩输出的平滑性和稳定性,对于降低油耗也非常有利。 [0003] 随着消费者对汽车配置的性价比要求越来越高,普通家用乘用车也开始配备定速巡航功能。同时,消费者除了对汽车功能要求增多以外,也越加注重人机界面的合理性和舒适性。传统的巡航功能的控制发生在发动机管理系统EMS内部,仪表IC并不参与控制逻辑,仅作显示功能,人机界面比较单一,此外,各巡航状态之间的切换功能不够完善。因此,提供一种合理的汽车定速巡航控制方法,便于构建较为完善的人机界面是非常有必要的。 Contents of the invention [0004] 本发明的目的在于提供一种汽车定速巡航控制方法。仪表IC参与巡航功能的控制和显示,人机界面更加合理,而根据车辆的实施状况实行巡航状态的切换使巡航功能更加完善、合理。 [0005] 本发明的技术方案为:一种汽车定速巡航控制方法,输入巡航按键信号至仪表IC,同时车辆的发动机管理系统EMS通过CAN总线将车辆的巡航控制状态发送至仪表IC,所述的仪表IC根据接收的巡航按键信号和巡航控制状态通过CAN总线向发动机管理系统EMS输出巡航请求信号和目标车速信号,所述的发动机管理系统EMS根据接收的巡航请求信号和目标车速信号以及车辆状态信号实行巡航控制状态的切换。 [0006] 进一步的,所述仪表IC根据接收的巡航按键信号和巡航控制状态控制巡航请求信号和目标车速信号输出的控制方式如下: [0007] 所述的巡航按键包括用于巡航功能开启 / 关闭的Cruise键、用于退出巡航的Cancel键、用于在巡航功能开启后激活巡航或在巡航过程中减速的Set / -键、用于以前一次目标车速恢复进入巡航或加速的Resume / +键; [0008] 所述的巡航控制状...
Claims
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