CN107816540A - 一种实现安全驾驶的电子换挡*** - Google Patents
一种实现安全驾驶的电子换挡*** Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/42—Ratio indicator devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
- F16H2061/0244—Adapting the automatic ratio to direct driver requests, e.g. manual shift signals or kick down
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
- F16H2061/0488—Smoothing ratio shift during range shift from neutral (N) to drive (D)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1256—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected
- F16H2061/1284—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected the failing part is a sensor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/42—Ratio indicator devices
- F16H2063/423—Range indicators for automatic transmissions, e.g. showing selected range or mode
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Abstract
本发明涉及一种实现安全驾驶的电子换挡***,包括自动变速器控制单元TCU、向CAN总线发送驾驶员请求挡位的换挡器控制单元GSM;还包括控制所述执行器动作的执行器控制单元GBC,所述执行器控制单元GBC还接收所述执行器位置传感器所反馈的所述换挡轴的挡位;通过判断执行器位置传感器是否故障、是否处于limphome模式以及当前车速是否满足车速高的条件综合实现对变速器的控制。通过协同换挡器控制单元(GSM)、自动变速器控制单元(TCU)、执行器控制单元(GBC)之间的控制实现电子换挡功能,可以在单个或多个控制单元发生故障的情况下,均能保证整车处于合理的挡位,确保驾驶安全性;可以有效避免误操作而出现损坏自动变速器的情况,提高变速器使用寿命。
Description
技术领域
本发明涉及一种实现安全驾驶的电子换挡***。
背景技术
在机械换挡机构中,驾驶员通过操纵普通换挡杆运动,普通换挡杆通过机械连接的换挡拉锁带动自动变速器的换挡轴旋转,从而实现P、R、N、D四个挡位的切换。随着生活水平的提高,越来越多的人希望通过先进的技术来辅助行车过程,从而提高行车安全和降低对驾驶技术的要求。例如自动泊车、自动通过狭窄道路、自动驾驶等技术,而这些技术应用的前提是车辆具备电子换挡功能,可以实现P、R、N、D挡位之间的自动切换。而在机械换挡机构中,换挡杆与换挡轴之间机械连接,只能通过驾驶员主观避免上述现象的发生,无法从根本上消除。采用机械换挡机构,为了保证普通换挡杆的运动行程,在换挡杆的设计中会占用较大的中控台空间,不利于中控台的多样化设计;在车辆已经启动的情况下,不具备防盗的功能。
发明内容
本发明所要解决的技术问题是提供一种根据行驶情况自动调整档位,提高驾驶安全性的实现安全驾驶的电子换挡***。
为解决上述技术问题,本发明的技术方案是:一种实现安全驾驶的电子换挡***,包括操作模块、执行器模块和自动变速器控制单元TCU;
所述操作模块包括向CAN总线发送驾驶员请求挡位的换挡器控制单元GSM;
所述执行器模块包括:与换挡轴连接的执行器,所述执行器内设有检测所述换挡轴所处挡位的执行器位置传感器;还包括控制所述执行器动作的执行器控制单元GBC,所述执行器控制单元GBC还接收所述执行器位置传感器所反馈的所述换挡轴的挡位;
所述换挡器控制单元GSM向CAN总线发送驾驶员的档位请求并从CAN总线上获取所述换挡轴的实际挡位;所述执行器控制单元GBC向CAN总线发送所述换挡轴的实际挡位和所述执行器位置传感器是否故障;所述自动变速器控制单元TCU从CAN总线上获取执行器位置传感器是否故障、驾驶员的挡位请求、换挡轴的实际挡位和车速;
所述换挡器控制单元GSM检测到驾驶员的D挡请求时向CAN总线发送D挡,设定当车速大于10Km/h则定义为车速高;
S1、判断执行器位置传感器是否故障,若执行器位置传感器无故障,则执行S2,若执行器位置传感器故障则执行S3;
S2、执行器控制单元GBC执行D挡;
S3、判断变速器是否处于limphome模式,
若变速器处于limphome模式,则执行器控制单元GBC执行D Blind;
若变速器处于非limphome模式,判断当前车速是否满足车速高的条件,若当前车速满足车速高的条件,则执行器控制单元GBC保持挡位;若当前车速不满足车速高的条件,则执行器控制单元GBC执行D Blind挡。
作为优选的技术方案,所述换挡器控制单元GSM和所述执行器控制单元GBC与所述自动变速器控制单元TCU之间还分别设有PWM通讯线路。
作为优选的技术方案,所述操作模块还包括挡位指示灯,当换挡器控制单元GSM检测到执行器控制单元GBC反馈的所述换挡轴的挡位与换挡器控制单元GSM请求的挡位不符时,所述挡位指示灯闪烁;当换挡器控制单元GSM检测到执行器控制单元GBC反馈的所述换挡轴的挡位与换挡器控制单元GSM请求的挡位相符时,所述挡位指示灯常亮。
作为优选的技术方案,所述挡位指示灯闪烁周期为800ms。
作为优选的技术方案,S2、执行器控制单元GBC执行D挡,D挡指示灯常亮;
S3、判断变速器是否处于limphome模式,
若变速器处于limphome模式,则执行器控制单元GBC执行D Blind,D挡指示灯闪烁;
若变速器处于非limphome模式,判断当前车速是否满足车速高的条件,若当前车速满足车速高的条件,则执行器控制单元GBC保持挡位,D挡指示灯闪烁;若当前车速不满足车速高的条件,则执行器控制单元GBC执行D Blind挡,D挡指示灯闪烁。
作为优选的技术方案,还包括组合仪表,所述组合仪表用于反馈变速器所处的实际挡位。
由于采用了上述技术方案,一种实现安全驾驶的电子换挡***,通过协同换挡器控制单元(GSM)、自动变速器控制单元(TCU)、执行器控制单元(GBC)之间的控制实现电子换挡功能,可以在单个或多个控制单元发生故障的情况下,均能保证整车处于合理的挡位,确保驾驶安全性;可以有效避免因为驾驶员的误操作而出现损坏自动变速器的情况发生,可以提高自动变速器的使用寿命。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1是本发明控制流程图。
具体实施方式
一种实现安全驾驶的电子换挡***,包括操作模块、执行器模块和自动变速器控制单元TCU。所述操作模块包括向CAN总线发送驾驶员请求挡位的换挡器控制单元GSM;调整档位的换挡旋钮以及与换挡旋钮的档位相应的数个档位指示灯。当换挡器控制单元GSM检测到执行器控制单元GBC反馈的所述换挡轴的挡位与换挡器控制单元GSM请求的挡位不符时,所述挡位指示灯闪烁;所述挡位指示灯闪烁周期为800ms。当换挡器控制单元GSM检测到执行器控制单元GBC反馈的所述换挡轴的挡位与换挡器控制单元GSM请求的挡位相符时,所述挡位指示灯常亮。通过挡位指示灯的状态可以帮助驾驶员判断变速器的运转状态。
所述执行器模块包括:与换挡轴连接的执行器,所述执行器内设有检测所述换挡轴所处挡位的执行器位置传感器;还包括控制所述执行器动作的执行器控制单元GBC,所述执行器控制单元GBC还接收所述执行器位置传感器所反馈的所述换挡轴的挡位。
所述换挡器控制单元GSM向CAN总线发送驾驶员的档位请求并从CAN总线上获取所述换挡轴的实际挡位;所述执行器控制单元GBC向CAN总线发送所述换挡轴的实际挡位和所述执行器位置传感器是否故障;所述自动变速器控制单元TCU从CAN总线上获取执行器位置传感器是否故障、驾驶员的挡位请求、换挡轴的实际挡位和车速;所述换挡器控制单元GSM和所述执行器控制单元GBC与所述自动变速器控制单元TCU之间还分别设有PWM通讯线路。为了更直观的向驾驶员反应变速器的实际挡位,还包括组合仪表,所述组合仪表用于反馈变速器所处的实际挡位。
所述换挡器控制单元GSM检测到驾驶员的D挡请求时向CAN总线发送D挡,设定当车速大于10Km/h则定义为车速高;如图1所示,
S1、判断执行器位置传感器是否故障,若执行器位置传感器无故障,则执行S2,若执行器位置传感器故障则执行S3;
S2、执行器控制单元GBC执行D挡,D挡指示灯常亮;
S3、判断变速器是否处于limphome模式,
若变速器处于limphome模式,则执行器控制单元GBC执行D Blind,D挡指示灯闪烁;
若变速器处于非limphome模式,判断当前车速是否满足车速高的条件,若当前车速满足车速高的条件,则执行器控制单元GBC保持挡位,D挡指示灯闪烁;若当前车速不满足车速高的条件,则执行器控制单元GBC执行D Blind挡,D挡指示灯闪烁。
以上显示和描述了本发明的基本原理、主要特征及本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (6)
1.一种实现安全驾驶的电子换挡***,其特征在于:包括操作模块、执行器模块和自动变速器控制单元TCU;
所述操作模块包括向CAN总线发送驾驶员请求挡位的换挡器控制单元GSM;
所述执行器模块包括:与换挡轴连接的执行器,所述执行器内设有检测所述换挡轴所处挡位的执行器位置传感器;还包括控制所述执行器动作的执行器控制单元GBC,所述执行器控制单元GBC还接收所述执行器位置传感器所反馈的所述换挡轴的挡位;
所述换挡器控制单元GSM向CAN总线发送驾驶员的档位请求并从CAN总线上获取所述换挡轴的实际挡位;所述执行器控制单元GBC向CAN总线发送所述换挡轴的实际挡位和所述执行器位置传感器是否故障;所述自动变速器控制单元TCU从CAN总线上获取执行器位置传感器是否故障、驾驶员的挡位请求、换挡轴的实际挡位和车速;
所述换挡器控制单元GSM检测到驾驶员的D挡请求时向CAN总线发送D挡,设定当车速大于10Km/h则定义为车速高;
S1、判断执行器位置传感器是否故障,若执行器位置传感器无故障,则执行S2,若执行器位置传感器故障则执行S3;
S2、执行器控制单元GBC执行D挡;
S3、判断变速器是否处于limphome模式,
若变速器处于limphome模式,则执行器控制单元GBC执行D Blind;
若变速器处于非limphome模式,判断当前车速是否满足车速高的条件,若当前车速满足车速高的条件,则执行器控制单元GBC保持挡位;若当前车速不满足车速高的条件,则执行器控制单元GBC执行D Blind挡。
2.如权利要求1所述的一种实现安全驾驶的电子换挡***,其特征在于:所述换挡器控制单元GSM和所述执行器控制单元GBC与所述自动变速器控制单元TCU之间还分别设有PWM通讯线路。
3.如权利要求1所述的一种实现安全驾驶的电子换挡***,其特征在于:所述操作模块还包括挡位指示灯,当换挡器控制单元GSM检测到执行器控制单元GBC反馈的所述换挡轴的挡位与换挡器控制单元GSM请求的挡位不符时,所述挡位指示灯闪烁;当换挡器控制单元GSM检测到执行器控制单元GBC反馈的所述换挡轴的挡位与换挡器控制单元GSM请求的挡位相符时,所述挡位指示灯常亮。
4.如权利要求3所述的一种实现安全驾驶的电子换挡***,其特征在于:所述挡位指示灯闪烁周期为800ms。
5.如权利要求3所述的一种实现安全驾驶的电子换挡***,其特征在于:
S2、执行器控制单元GBC执行D挡,D挡指示灯常亮;
S3、判断变速器是否处于limphome模式,
若变速器处于limphome模式,则执行器控制单元GBC执行D Blind,D挡指示灯闪烁;
若变速器处于非limphome模式,判断当前车速是否满足车速高的条件,若当前车速满足车速高的条件,则执行器控制单元GBC保持挡位,D挡指示灯闪烁;若当前车速不满足车速高的条件,则执行器控制单元GBC执行D Blind挡,D挡指示灯闪烁。
6.如权利要求1所述的一种实现安全驾驶的电子换挡***,其特征在于:还包括组合仪表,所述组合仪表用于反馈变速器所处的实际挡位。
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