CN111016798B - 一种流媒体后视镜温度控制方法 - Google Patents

一种流媒体后视镜温度控制方法 Download PDF

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CN111016798B
CN111016798B CN201911307025.5A CN201911307025A CN111016798B CN 111016798 B CN111016798 B CN 111016798B CN 201911307025 A CN201911307025 A CN 201911307025A CN 111016798 B CN111016798 B CN 111016798B
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display screen
temperature
module
screen module
mcu
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CN111016798A (zh
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张伟
张朝才
宋磊磊
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Ningbo Huaxiang Video Electronics Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/12Mirror assemblies combined with other articles, e.g. clocks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q9/00Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406Control of illumination source
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406Control of illumination source
    • G09G3/3413Details of control of colour illumination sources
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/12Mirror assemblies combined with other articles, e.g. clocks
    • B60R2001/1215Mirror assemblies combined with other articles, e.g. clocks with information displays
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

本发明公开了一种流媒体后视镜温度控制方法,它包括MCU、显示屏模组、驱动电流模组、温度检测模块及光感应器,温度检测模块用来监测显示屏模组温度,MCU分别与显示屏模组、驱动电流模组、温度检测模块连接,驱动电流模组还与显示屏模组连接,温度检测模块将显示屏模组温度反馈于MCU,MCU根据温度数据调节驱动电流模组,通过调节驱动电流模组电流大小来调整显示屏模组背光亮度,以达到显示屏模组温度与背光亮度均衡,光感应器与MCU连接。本发明其MCU根据显示屏模组温度调节显示屏模组背光驱动电流,从而调节显示屏显示屏模组亮度,最终达到降低显示屏模组温度的目的。

Description

一种流媒体后视镜温度控制方法
技术领域
本发明涉及汽车技术领域,更确切地说涉及一种流媒体后视镜温度控制方法。
背景技术
流媒体后视镜通过TFT显示屏来显示后视摄像头的高清画面,为驾驶员提供清晰流畅的车后方的视野画面。为了使驾驶员更舒适清楚地看清显示屏画面,显示屏需要提供足够的背光亮度,但是由于在驾驶舱内后视镜内部不能按照风扇或散热孔,风扇虽然冷却效果好,但是存在异响及占空间问题,而散热孔则无法满足前装试验要求,加上由于在夏天车辆在高温环境下,车内最高温度能达到七八十度,因此,必须从软件方面采取策略来降低后视镜的温度。
发明内容
本发明提供一种流媒体后视镜温度控制方法,其MCU根据显示屏模组温度调节显示屏模组背光驱动电流,从而调节显示屏显示屏模组亮度,最终达到降低显示屏模组温度的目的。
本发明的技术解决方案是,提供一种流媒体后视镜温度控制方法,它包括MCU、显示屏模组、驱动电流模组、温度检测模块及光感应器,温度检测模块用来监测显示屏模组温度,MCU分别与显示屏模组、驱动电流模组、温度检测模块连接,驱动电流模组还与显示屏模组连接,温度检测模块将显示屏模组温度反馈于MCU,MCU根据温度数据调节驱动电流模组,通过调节驱动电流模组电流大小来调整显示屏模组背光亮度,以达到显示屏模组温度与背光亮度均衡,光感应器与MCU连接。
MCU调节措施为:当显示屏模组温度数值T≥H,MCU调节驱动电流模块降低驱动电流,使得显示屏模组背光降低到亮度最低值;当显示屏模组温度数值L<T<H,继续保持显示屏模组背光亮度最低值或将显示屏模组背光亮度周期性逐步减小,最低减小至基准亮度的20%;当显示屏模组温度数值T≤L,显示屏模组背光进入手动或自动调节亮度模式。
具体地,温度检测模块每5秒检测一次显示屏模组温度。
具体地,当显示屏模组温度数值T≥H时,温度警报器标志显示或警报声响起;当显示屏模组温度数值T≤L时,温度警报器标志消失或警报声停止。
具体地,手动或自动调节亮度模式为按钮或显示屏触摸形式。
具体地,显示屏模组包括led灯板、散热片及显示屏。
具体地,显示屏模组还包括散热装置,散热装置靠近led灯板设置,散热装置与温度检测模块连接。
本发明与现有技术相比,具有以下优点:本发明通过对显示屏模组温度监测,MCU根据温度对显示屏模组降低背光驱动电流来调节显示屏模组亮度,从而降低显示屏温度,以达到显示屏模组亮度与温度的均衡,从而既能满足客户对亮度和温升的要求,同时也能延长显示屏的使用寿命。
附图说明
图1是本发明流程示意图。
具体实施方式
下面详细描述本发明的实施例,所述实施例的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的,仅用于解释本发明,而不能理解为对本发明的限制。
下面结合附图和具体实施例对本发明作进一步说明。
本发明包括一种流媒体后视镜温度控制方法,如图1所示,它包括MCU、显示屏模组、驱动电流模组及温度检测模块,温度检测模块用来监测显示屏模组温度,MCU分别与显示屏模组、驱动电流模组、温度检测模块连接,驱动电流模组还与显示屏模组连接,温度检测模块将显示屏模组温度反馈于MCU,MCU根据温度数据调节驱动电流模组,通过调节驱动电流模组电流大小来调整显示屏模组背光亮度,以达到显示屏模组温度与背光亮度均衡,即通过降低驱动电流模块来降低显示屏模组背光亮度,从而对显示屏模组起到降温目的。
MCU调节措施为:当显示屏模组温度数值T≥H,温度检测模块实时检测温度并反馈于MCU,MCU降低显示屏模组背光驱动电流,使得其背光降低到亮度最低值,从而降低显示屏模组的发热;
当显示屏模组温度数值L<T<H,继续保持显示屏模组背光亮度最低值或将显示屏模组背光亮度周期性逐步减小,最低减小至基准亮度的20%,使得显示屏模组亮度既能清晰显示,又能最大程度减少显示屏模组亮度过大的能耗;
当显示屏模组温度数值T≤L,显示屏模组背光进入手动或自动调节亮度模式,其中L为低温度值,H为高温度值,T为温度值,需要说明的是,L与H具体数值大小,可以根据不同环境及车内温度进行灵活设置,在此不赘言。
温度检测模块每5秒检测一次显示屏模组温度并反馈给MCU,保证温度检测模块实时检测并反馈温度值给MCU,该检测频率不仅保证了实时性,而且不会导致模块与MCU之间频繁的信息交换,减少MCU的工作负担。
当显示屏模组温度数值T≥H时,温度警报器标志显示,温度警报器标志显示于显示屏上,或通过警报蜂鸣器进行报警;当显示屏模组温度数值T≤L时,则温度警报器标志消失停止,或警报蜂鸣器停止。其中T为显示屏模组温度数值,H为100度,L为90度。
手动或自动调节亮度模式为按钮或显示屏触摸形式。
同时,MCU还与一光感应器连接,根据光感应器采集到的环境光亮度值,MCU控制显示屏模组驱动电路输出相应的驱动电流至显示屏模组,从而调节显示屏的背光亮度。
由于流媒体内后视镜发热后温度最高部位为显示屏模组,除了在显示屏模组背面增设散热片外,通过MCU等软件调节显示屏模组亮度,也能适当地降低显示屏模组温度,本发明中显示屏模组包括led灯板、散热片及显示屏,而采用led灯板作为背光光源,灯板能更容易地反映显示屏模组的温度,方便温度检测模块监测温度,当驱动电流越大,led亮度越亮,使得发热就越大,因此本发明中显示屏模组达到了亮度和温度的均衡。
另外,显示屏模组还包括一散热装置,散热装置靠近led灯板设置,散热装置与温度检测模块连接,温度检测模块实时检测显示屏模组的温度,当环境温度或显示屏模组温度超出MCU所能处理极限时,或者通过降低显示屏模组亮度降低温度不能快速降低显示屏模组温度时,散热装置能及时地工作以降低显示屏模组。
实施例一,散热装置为一种风扇,MCU根据温度检测模块所反馈的温度值(超过110°)或驱动电流模块调节显示屏模组亮度已无法再降,MCU驱动风扇启动,强行对显示屏模组进行降温。
实施例二,散热装置为表面通过电泳涂漆或黑色氧极化处理的特制金属散热块,处理目的是提高散热效率,通常在自然冷却下可提高1015%,在通风冷却下可提高3%,根据不同环境需求而选择不同型号的散热块。
本发明不仅局限于以上实施例,其具体结构允许有变化,凡在本发明独立要求的保护范围内所作的各种变化均在本发明的保护范围内。

Claims (6)

1.一种流媒体后视镜温度控制方法,其特征在于,
它包括MCU、显示屏模组、驱动电流模组、温度检测模块及光感应器;
温度检测模块用来监测显示屏模组温度,MCU分别与显示屏模组、驱动电流模组、温度检测模块连接,驱动电流模组还与显示屏模组连接,温度检测模块将显示屏模组温度反馈于MCU,MCU根据温度数据调节驱动电流模组,通过调节驱动电流模组电流大小来调整显示屏模组背光亮度,以达到显示屏模组温度与背光亮度均衡,光感应器与MCU连接;
显示屏模组还包括散热装置,散热装置与温度检测模块连接;当环境温度或显示屏模组温度超出MCU所能处理的极限时,或者通过降低显示屏模组亮度降低温度不能快速降低显示屏模组温度时,散热装置强行对显示屏模组进行降温;
MCU调节措施为:当显示屏模组温度数值T≥H,MCU调节驱动电流模块降低驱动电流,使得显示屏模组背光降低到亮度最低值;当显示屏模组温度数值L<T<H,将显示屏模组背光亮度周期性逐步减小,最低减小至基准亮度的20%;当显示屏模组温度数值T≤L,显示屏模组背光进入手动调节亮度模式;
其中L为低温度值,H为高温度值,T为温度值。
2.根据权利要求1所述的流媒体后视镜温度控制方法,其特征在于:温度检测模块每5秒检测一次显示屏模组温度。
3.根据权利要求1所述的流媒体后视镜温度控制方法,其特征在于:当显示屏模组温度数值T≥H时,温度警报器标志显示或警报声响起;当显示屏模组温度数值T≤L时,温度警报器标志消失或警报声停止。
4.根据权利要求1所述的流媒体后视镜温度控制方法,其特征在于:手动或自动调节亮度模式为按钮或显示屏触摸形式。
5.根据权利要求1所述的流媒体后视镜温度控制方法,其特征在于:显示屏模组包括led灯板、散热片及显示屏。
6.根据权利要求5所述的流媒体后视镜温度控制方法,其特征在于:散热装置靠近led灯板设置。
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