物联网工程实施Read-环境子系统设备选型

环境子系统设备选型Selectionofenvironmentalsubsystemequipment环境监测子系统功能

Function环境监测子系统可以采集社区内的温度、湿度等环境信息。为了系统工作稳定、可靠，一般也使用有线传感器。Theenvironmentalmonitoringsubsystemcancollectenvironmentalinformationsuchastemperatureandhumidityinthecommunity.Inorderforthesystemtoworkstablyandreliably,wiredsensorsaregenerallyused.主要设备Majorequipment有线模拟量传感器Wiredanalogsensor温湿度传感器TemperatureandHumiditysensor光照传感器Lightsensor二氧化碳传感器Carbondioxidesensor四通道采集器Fourchannelcollector什么是模拟量

Whatisananalogquantity在一定范围连续变化的量。即：在时间上和数值上都是连续变化的物理量。Theamountofcontinuousvariationwithinacertainrange.Thatis,aphysicalquantitythatcontinuouslychangesinbothtimeandvalue.模拟量信号

Analogsignal表示模拟量的信号叫做模拟信号，如电压、电流。Signalsrepresentinganalogquantitiesarecalledanalogsignals,suchasvoltageandcurrent.模拟量信号通常被转换成4-20mA的电流信号或0-10V的电压信号。Analogsignalsareusuallyconvertedinto4-20mAcurrentsignalsor0-10Vvoltagesignals模拟量信号Analogsignal为什么要转换成4-20mA的电流信号？Whyconverttoa4-20mAcurrentsignal？减少电缆长度变化造成的信号衰减Reducesignalattenuation区分断路和0信号Distinguishbetweenopencircuitand0signal设备介绍Equipment有线模拟量传感器Wiredanalogsensor温湿度传感器TemperatureandHumiditysensor光照传感器Lightsensor二氧化碳传感器Carbondioxidesensor四通道采集器Fourchannelcollector设备介绍—有线温湿度传感器Wiredtemperatureandhumiditysensor温湿度传感器也称温湿度变送器，是用于测量空气中温度和湿度的传感器。Temperatureandhumiditysensor,alsocalledtemperatureandhumiditytransmitter,isasensorusedtomeasuretemperatureandhumidityintheair.温湿度传感器采用一体式结构，左下方突出部分为内置探头，可以测量周围环境的温湿度。其测量温度量程为：-10~60℃，湿度量程为：50~100%RH。Thetemperatureandhumiditysensoradoptsanintegratedstructure,andtheprotrudingpartonthelowerleftisabuilt-inprobethatcanmeasurethetemperatureandhumidityofthesurroundingenvironment.Themeasuringtemperaturerangeis:-10~60℃,andthehumidityrangeis:50~100%RH.设备介绍—有线温湿度传感器Wiredtemperatureandhumiditysensor设备介绍Equipment有线模拟量传感器Wiredanalogsensor温湿度传感器TemperatureandHumiditysensor光照传感器Lightsensor二氧化碳传感器Carbondioxidesensor四通道采集器Fourchannelcollector设备介绍—有线光照传感器Wiredlightsensor温湿度传感器采用一体式结构，左下方突出部分为内置探头，可以测量周围环境的温湿度。其测量温度量程为：-10~60℃，湿度量程为：50~100%RH。Thetemperatureandhumiditysensoradoptsanintegratedstructure,andtheprotrudingpartonthelowerleftisabuilt-inprobethatcanmeasurethetemperatureandhumidityofthesurroundingenvironment.Themeasuringtemperaturerangeis:-10~60℃,andthehumidityrangeis:50~100%RH.光照传感器为一体式结构，中间圆型区域内为光电元件，可检测光线强弱。传感器的量程为：0~20000Lux，波长测量范围380~730nm。Theilluminancesensorisanintegratedstructure,withphotoelectricelementsinthemiddlecirculararea,whichcandetecttheintensityoflight.Therangeofthesensoris0~20000Lux,andthewavelengthmeasurementrangeis380~730nm.设备介绍—有线温湿度传感器Wiredtemperatureandhumiditysensor设备介绍Equipment有线模拟量传感器Wiredanalogsensor温湿度传感器TemperatureandHumiditysensor光照传感器Lightsensor二氧化碳传感器Carbondioxidesensor四通道采集器Fourchannelcollector设备介绍—有线二氧化碳传感器Wiredcarbondioxidesensor二氧化碳传感器是用于检测二氧化碳浓度的传感器。它利用二氧化碳对红外线较为敏感的特性，通过检测光通量来检测二氧化碳浓度。Thecarbondioxidesensorisasensorusedtodetecttheconcentrationofcarbondioxide.Itusesthecharacteristicthatcarbondioxideismoresensitivetoinfraredrays,anddetectstheconcentrationofcarbondioxidebydetectinglightflux.二氧化碳传感器为一体式结构，传感器的量程为：0-5000PPM。Thecarbondioxidesensorhasanintegratedstructure,andthesensorrangeis0-5000PPM.设备介绍—有线二氧化碳传感器Wiredcarbondioxidesensor设备介绍Equipment有线模拟量传感器Wiredanalogsensor温湿度传感器TemperatureandHumiditysensor光照传感器Lightsensor二氧化碳传感器Carbondioxidesensor四通道采集器Fourchannelcollector模拟量采集器的作用是将有线模拟量传感器的数据收集到一起，通过线路传输到计算机系统中。Thefunctionoftheanalogquantitycollectoristocollectthedataofthewiredanalogquantitysensortogetherandtransmitittothecomputersystemthroughtheline.设备介绍—模拟量采集器Analogquantitycollector模拟量采集器Analogquantitycollect