汽车仪表系统
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汽车仪表原理
汽车仪表是指安装在汽车驾驶室内的各种仪表,用于显示汽车的行驶状态和各个系统的工作情况。
汽车仪表通常由速度表、转速表、油表、水温表、电量表等组成。
速度表是用来显示汽车行驶速度的仪表。
它通过感应车轮旋转的次数,将转速转换成车辆的速度,并显示在仪表盘上。
转速表则是显示发动机转速的仪表,它通过感应发动机每分钟转动的次数,将转速转换成角度,并显示在仪表盘上。
油表是用来显示车辆油量的仪表。
它通过感应油箱内的油位高低,将油量转换成电信号,并显示在仪表盘上。
水温表是用来显示发动机冷却液温度的仪表,它通过感应冷却液的温度,将温度转换成电信号,并显示在仪表盘上。
电量表则是显示车辆电瓶电量的仪表,它通过感应电瓶电压,将电压转换成电信号,并显示在仪表盘上。
除了以上主要的仪表外,汽车仪表还可能包括指示灯和警示器。
指示灯用来显示车辆不同系统的工作状态,如引擎故障、机油压力低等。
警示器则是用来提醒驾驶员注意车辆的问题或危险情况,如制动系统故障、安全气囊未关闭等。
汽车仪表的原理是基于感应和信号转换技术。
仪表通过感应车辆不同部件的工作情况,如车速、转速、油位、温度等,将其转换成电信号,并通过电路传输到仪表盘上,最后将信号转换成驾驶员可直观读取的显示信息。
总的来说,汽车仪表通过感应和信号转换技术,将车辆的行驶状态和各个系统的工作情况转换成电信号,并显示在仪表盘上,以便驾驶员实时了解车辆状况,保障行驶安全。
汽车照明、信号、仪表、警报系统教案《汽车照明、信号、仪表、警报系统教案》嗨,同学们!今天咱们要一起探索汽车里超级有趣又超级重要的东西——汽车照明、信号、仪表、警报系统。
一、汽车照明系统咱们先来说说汽车照明系统吧。
这就像是汽车的眼睛呢!想象一下,如果人没有眼睛,那得多不方便呀。
汽车也是这样。
汽车的大灯就像是人的大眼睛,在晚上或者光线不好的时候,大灯会亮起来,照亮前面的路。
大灯有远光和近光之分哦。
远光呢,就像手电筒开了超强光,能照得很远很远,在那种没有路灯的大路上,远光可太有用啦。
可是呀,要是在会车的时候还开着远光,那就不行啦。
这就好比你在和别人面对面说话的时候,你突然拿个强光手电筒对着人家眼睛,多不礼貌呀。
所以这时候就要用近光啦,近光就比较温和,不会晃到对面司机的眼睛。
除了大灯,汽车还有小灯呢。
小灯就像是汽车的小眉毛,在傍晚或者刚进入隧道的时候,小灯就会亮起来,告诉别人,嘿,我在这儿呢。
还有转向灯,转向灯可重要啦。
当汽车要转弯的时候,转向灯就会一闪一闪的,就像在说“我要往这边走啦,大家注意哦”。
如果汽车没有转向灯,那就像一个人走路不打招呼就突然转弯,多容易撞到别人呀。
二、汽车信号系统信号系统和照明系统可是好伙伴呢。
刚刚说的转向灯就是信号系统的一部分。
还有刹车灯,刹车灯在汽车刹车的时候就会亮起来。
这就像一个人突然停下来的时候,会大喊一声“停”一样。
要是刹车灯坏了,后面的车可就不知道前面的车要停下来了,那多危险呀。
有一次,我和爸爸在路上开车,前面有辆车突然减速,但是刹车灯没亮,爸爸差点就撞到那辆车了。
爸爸当时就说“哎呀,这刹车灯不亮可太危险了,就像一个人突然站住却不告诉别人一样”。
还有倒车灯呢,倒车灯在汽车倒车的时候会亮。
这就像是汽车在倒车的时候跟后面的东西说“我要往后退啦,你们快让开”。
喇叭也是信号系统的一部分哦。
喇叭就像汽车的嘴巴,当遇到紧急情况的时候,按喇叭就可以提醒别人。
但是可不能乱按喇叭呀,就像我们不能随便大喊大叫一样。
仪表系统的组成及作用学习目标(1)通过本任务学习能掌握通过汽车仪表板信息读取;(2)汽车运行参数及状态。
一、汽车仪表的作用汽车仪表的作用是监测汽车的运行状况。
使驾驶员随时观察与掌握汽车各系统工作状态的相关信息,故而在驾驶室转向盘的前方台板上装有仪表盘。
仪表盘包括了发动机转速表、车速表、里程表、燃油表、水温表、机油压力表以及各种报警显示装置等内容。
由于仪表系统是司机了解汽车工作状况的“眼睛”,对确保汽车行车安全、及时排除故障和避免发动机出现严重故障起着重要的作用,因此要求各个仪表结构简单、工作可靠、显示数据清晰、准确、指示值受电源的电压波动和环境温度变化的影响小,除此之外,仪表的抗震、耐冲击性能也要好。
二、汽车组合仪表的类型过去的车辆将各种分体的仪表零散安装在车内,而现在的汽车都将各种不同功能的仪表和只是警告灯安装在一起,形成了现在的仪表系统。
1.组合仪表的分类汽车组合仪表按内部结构可分为:1)机械式仪表就是基于机械作用力而工作的仪表。
机械式仪表2).模拟电路电子式仪表基于电测原理,通过各类传感器将被测的非电量变换成电信号(模拟量)以及电子器件(分立元件和集成电路)加以测量的仪表,现在均采用各种专用集成电路。
模拟电路式仪表3).数字式仪表就是由ECU采集传感器的信号,将模拟量转换为数字量,经分析处理后控制显示装置的仪表。
数字式仪表(宝马5系)2. 汽车仪表的发展趋势早期的机械式仪表早已经淘汰。
传统的汽车仪表多为机电模拟仪表,只能给驾驶员提供汽车运行中必要而又少量的数据信息,已远远不能满足现代汽车的要求,如图6-4a所示。
随着电子技术的发展,多功能、高精度、高灵敏度、读数直观的电子数字显示及图像显示的仪表不断在汽车上应用,如图6-4b所示。
汽车仪表正向综合信息系统的方向发展,其功能不局限于现在的车速、里程、发动机转速、油量、水温、方向灯指示等,还增添了一些新功能,比如带ECU的智能化汽车仪表,能指示安全系统运行状态,如轮胎气压、制动装置、安全气囊等。
The odometer shows the total dis-tance your car has been driven.It displays in miles and kilometers.It is illegal under U.S.federal law and Canadian provincial regulations to disconnect,reset,or alter theodometer with the intent to change the number of miles or kilometers indicated.GaugesOdometerCONTINUEDGaugesManual TransmissionGaugesAutomatic Transmission (CVT)This display shows the current,or instantaneous fuel mileage you are getting.To reset a trip meter,display it,then press and hold the Trip button until the numbers reset to 0.0.You can turn off this display at any time.See page .To change the meter reading in the display,push the display change button.(U.S.:miles per hour and mpg,Canada:kilometer per hour and l/100km)55GaugesCurrent Fuel MileageWhen you reset a trip meter,the average fuel mileage for that trip meter also resets.When a trip meter is displayed,the average fuel mileage you have been getting during that trip is shown in the Fuel Mileage display.Thisnumber is updated once per minute.This display can be turned off at any time.See page .You can use this function to display the distance and average fuel mileage for a segment of a trip.To display the segment distance and fuel mileage,press and release the FCD Select button.The Segment Display indicator will come on to remind you that this is the segment distance and fuel mileage display.To reset the display,press and hold the FCD Select button until the display resets to zero and dashes.The system then begins displaying the distance and average fuelmileage from that point.The display is updated once per minute.To switch between the segment display and the Trip Meter/Odometer display,press and release the FCD Select button.55GaugesTrip MileageSegment Distance and Fuel MileageYou can temporarily turn off theCurrent Fuel Mileage and FuelMileage displays.To turn them off:When the odometer is displayed,theFuel Mileage display shows thelifetime fuel mileage.This is theaverage fuel mileage your vehiclehas gotten since the last time thedisplay was reset.To reset this display,turn theignition switch to ON(II).If theengine is running,make sure thetransmission is in neutral and theparking brake is e the Tripbutton to display the odometer.Thenpress and hold the Trip button untilthe Lifetime Fuel Mileage Displaybegins to blink(approximately fiveseconds).Release the Trip button,then press it again while the displayis blinking and hold it until thedisplay clears to dashes.Turn the ignition switch to ON(II).If the engine is running,makesure the transmission is in neutraland the parking brake is set.Use the Trip button to select TripA,Trip B,or the odometer.Press and hold the FCD Selectbutton for approximately threeseconds.The Current FuelMileage display will turn off.Press and hold the FCD Selectbutton again.The Fuel Mileagedisplay for the meter you aredisplaying(Trip A,Trip B,orodometer)will turn off.1.3.4.2.CONTINUEDGaugesTurning Off the Mileage Displays Lifetime Fuel MileageUse the Trip button to select another mileage display.Press and hold the FCD Select button again to turn off that display.Use the Trip button to select the third display.Press and hold the FCD Select button again to turn off that display.Although the displays are turned off,the average fuel mileages continue to be calculated.The displays will turn back on when you press and hold the FCD Select button again.The gauge reading may drop near the bottom under driving conditions that require assist for a long time,such as prolonged acceleration or climbing a long hill.The engine will recharge the battery as you continue driving.5.6.7.8.With CVT (U.S.only)GaugesThis gauge shows the status of the Integrated Motor Assist.If the indicator is on the left side of the gauge,the IMA battery is being charged.If the indicator is on the right side of the gauge,the IMA is assisting the engine.If the battery is mostly discharged,the Auto Idle Stop function isdisabled (see pages and ).137145With 5-speedWith CVT (U.S.only)GaugesCharge/Assist GaugeThis shows the temperature of the engine’s coolant.During normal operation,the reading should be in the middle of the gauge.In severe driving conditions,such as very hot weather or a long period of uphill driving,the reading may reach near the red mark.If it reaches the red mark,pull safely to the side of the road.Turn to page forinstructions and precautions on checking the engine’s cooling system.The tachometer shows the engine speed in revolutions per minute (rpm).To protect the engine from damage,never drive with thetachometer reading in the red zone.227Temperature GaugeTachometerGaugesThis indicator reminds you that it is time to take your car in for scheduled maintenance.When the distance driven since the last scheduled maintenance reaches 6,000miles (9,600km),the indicator starts blinking.If you exceed 7,500miles (12,000km),the indicator stays on.Your dealer will reset this indicator after completing the scheduled maintenance.If this maintenance is done by someone other than your Honda dealer,reset the indicator as follows.Turn off the engine.Press and hold the trip button in the instrument panel,then turn the ignition switch ON (II).Hold the button until the indicator resets (approximately ten seconds).Refer to the Maintenance Schedules for Normal and Severe Driving Conditions on pages .1. 2.3.158162GaugesMaintenance Required Indicator。