Question 1

What else is a PIR sensor known as?

Accepted Answer

PIR sensor is short for passive infrared detector. It’s also called pyroelectric infrared sensor, human infrared sensor, or human infrared sensor. Through the name, we can know that PIR devices do not radiate energy for detection purposes, and they can detect infrared radiation (radiant heat) from human, cars or mammals. And it’s all call infrared motion sensor, because it’s only detecting moving persons, cars or other thermal sources.

Question 2

Does PIR work during the day?

Accepted Answer

Yes, PIR sensor can work not matter it’s daytime or night. But some PIR lights are equipped with light sensors or daylight sensors that prevent them from turning on the lamps during daylight hours. By this, we can save more energy. The reason is that daylight sensor can sense the intensity of ambient light (such as the brightness of natural light during the day). When the ambient light is sufficient (such as daytime), the light sensor will send a signal to the control system to suppress the triggering command of the PIR sensor and prevent the lamp from turning on. This combination makes the lamp turn on only when lighting is needed (dark light) and there is activity.

Question 3

What are the disadvantages of solar street light with motion sensor?

Accepted Answer

Street light with motion sensor offers energy savings and less investment. But it also has some notable drawbacks. One is the false triggers from wind, animals, or leaves. What’s more, the sensor has limited coverage, which means that it sometimes turn on when the passenger is quite near the lamps. But it can not sensor fast moving object such as cars.

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Solar street light with motion sensor or passive infrared sensor

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LED Street Light

Solar Street Light

Led Flood Light

Solar Flood Light

LED High Bay Light

High Mast Light

LED Traffic Light

LED Tunnel Light

LED Garden Light

LED Canopy Light

Led Bollard Light

Lighting Accessories

Smart Systems

Simulation Design

Smart Financing