Overview
Infrared electric sensors detect infrared radiation emitted by objects within their field of view. These passive devices are widely deployed in automation, security, and energy management due to their non-invasive operation and adaptability. Unlike active sensors, they do not emit signals but rely on thermal radiation, making them energy-efficient. Common types include pyroelectric (for motion) and thermopile sensors (for temperature). Their modular designs allow integration into IoT systems or standalone devices.
Structure and Working Principle
A typical sensor comprises a lens (Fresnel or parabolic), IR-sensitive material, and signal-processing circuitry. The lens focuses radiation onto the detector, which generates a voltage proportional to the received energy. Pyroelectric sensors detect changes in IR patterns (e.g., moving humans), while thermopile variants measure absolute temperature. Advanced models include filters to exclude ambient IR noise, ensuring accuracy in fluctuating environments.
Key Features
Modern IR electric sensors offer adjustable detection angles (30°–180°) and ranges (up to 10 meters). Their low power draw (often <1mA) suits battery-operated systems like wireless alarms. Some feature digital outputs (I2C/SPI) for microcontroller interfacing, while analog variants provide continuous voltage signals. Industrial-grade units include rugged housings (IP67) for harsh conditions.
Application Areas
In industrial settings, these sensors monitor equipment overheating or trigger conveyor belts. Security systems use them for intrusion detection in combination with cameras. Smart homes leverage motion-activated lighting, while HVAC systems employ them for occupancy-based climate control. Medical devices, such as non-contact thermometers, also rely on IR sensing technology.
Maintenance and Precautions
Regular lens cleaning prevents dust accumulation, which can scatter IR waves. Avoid mounting near vents or heat sources to reduce false triggers. Calibration checks are recommended annually for critical applications. For outdoor use, select models with UV-resistant coatings to prevent lens degradation.
B2B Procurement Guide
Bulk buyers should verify supplier certifications (e.g., ISO 9001) and request sample testing for consistency. MOQs often start at 100–500 units, with discounts for >1,000. Key specs to confirm: operating temperature range (-20°C to +70°C standard), response time (<2 seconds for motion detection), and compatibility with control systems (e.g., PLCs). Lead times vary from 2–8 weeks for customized orders.
Related Manufacturers
- 主营：[]
- 主营：[]
- 主营：[]
- 主营：[]
- 主营：[]
- 主营：[]
- 主营：[]
- 主营：[]
- 主营：[]
- 主营：矿用自动洒水降尘装置、矿用反冲洗式水质过滤器、矿用声光语音报警器、矿用电动球阀、矿用声光信号器、矿用细水喷雾降尘装置、矿用自动隔爆系统
- 主营：排型钢梁、矿用门、支护设备、矿用防爆电气、矿用检测仪报警仪传感器、矿用电子围栏、蓄电池电机车、隔爆稳压电源、矿用本安型电磁阀、铁路道岔、矿用救护设备、煤矿井下自动隔爆装置、锚杆钻机、单体液压支柱、无压风门、回柱绞车、喷浆机、隔爆摄像仪、矿用气动工具
- 主营：语言报警器、矿用自动洒水降尘装置、矿用反冲洗式水质过滤器、矿用电动球阀、无极绳绞车配件
- 主营：无极绳连续牵引绞车、单轨吊、托绳轮组、热释光控传感器、绞车配件、主压绳轮组、拐歪轮组、尾轮、五轮重锤涨紧装置、梭车、导绳轮、涨紧轮、轨道、副压绳轮组
- 主营：菲涅尔透镜、微波模块、微波雷达感应模块、光敏电阻、光敏传感器、红外传感器、热敏电阻、压敏电阻、红外接收头、红外发射管、热释电红外传感器、金属壳光敏电阻、环保光敏电阻、红外处理芯片、贴片热释电红外传感器、数字光敏传感器、贴片光敏电阻、隔离垫高柱、LED隔离垫高柱、人体感应菲涅尔透镜、科技菲涅尔透镜、导光柱防水罩、防水罩、微波感应模块、LED隔离柱
- 主营：安全光幕、安全光栅、测量光栅、透明体传感器、人体存在传感器、安全光电、传感器、测量光幕、区域光栅、区域光幕、光栅光幕、施莱格安全光栅、施莱格光栅、安全光栅施莱格、光栅施莱格、施莱格安全光幕、安全开关、安全门锁、感应器
- 主营：鄂破机、倒浆泵、气控箱、减速机、钢丝带、罐道轮、瓷溜槽、喷浆机、取样器、普棉带、破拱器、小排车、注浆泵、控制箱、清淤泵、机甲带、防爆门、指示器、排污泵、主控箱、显示屏、装载机、平板车、头戴灯、转载机
- 主营：煤矿氧气呼吸器、全液压坑道钻机、直读式粉尘测定仪、灾区电话、矿用乳化液泵配件、矿用钻机配件、煤矿消防救护、氧气测定器、氢氧化钙、二氧化碳吸收剂、煤矿绞车、煤矿注浆泵、矿用孔板流量计、轨道道口板、自动苏生器、空气呼吸器、氧气充填泵、消防破拆工具、道口板、消防救护器材、煤矿井下用自动隔爆装置、泄露通讯装置、抱索器
- 主营：矿用救护、煤矿用钻机、旧枕木、灾区电话、车载甲烷断电仪、氧气呼吸器、氧气充填泵、井下自动隔爆装置 ZGJFH35型、ZDY1200S全液压坑道钻机、泥浆泵、注浆泵、快速密闭罐、矿用风机、CCZ-1000粉尘检测仪、氢氧化钙(二氧化碳吸收剂)、一氧化碳吸收剂、干燥剂、CD5多参数气体检测仪、空气呼吸器、气幕喷淋装置、矿用门、避难硐室门、矿用密闭门、防火门
- 主营：接近传感器、报警器、矿用本安
- 主营：漂白粉、茶皂素、噻霉酮、浮选油、草酸铵、戊二醛、苯甲醇、磺化油、漂粉精、氟化钠、三甘醇、碳酸钙、白僵菌、松醇油、碳酸钡、黄糊精、雷米邦a、号全精炼、杀菌剂bit、三乙醇胺、牛骨发酵、快干水泥、多聚甲醛、次氯酸钠、羟基乙叉
- 主营：雪崩光电二极管、单光子计数器、平衡探测器
- 主营：防爆按钮、防爆对射、双鉴探测器、红外探测器、防爆红外光栅、电子围栏、红外对射、防爆探测器、防爆温湿度探测器、张力围栏、激光对射、AL校园防霸凌一键报警产品、振动光纤、可燃气体探测器、总线报警主机、燃气探测器、边境围栏、紧急按钮、工业张力围栏、防爆气体、温湿度探测器、4G烟感探测器、报警器、防爆水浸探测器、防爆主机
- 主营：芯片、ALLEGRO、Honeywell、集成电路(IC)、infineon、Melexis、TI德州仪器、ST意法半导体、Akm旭化成、Diodes美台、MegnTek麦歌恩、各大芯片品牌代理
- 主营：发送器、减速机、罐道轮、热释电红外传感器、行车门、擦靴机、扩音器、遥控器、凿岩机、破拱器、注浆泵、气控箱、清理机、控制箱、阻化剂、装岩机、机甲带、防爆门、拆装机、推雪铲、粘胶板、主控箱、疏通机、显示屏、发动机、装载机