Before understanding the Best PIR sensor LED lamp outdoors, we need to know the PIR sensor's working principle and application scenarios. Then, we can better understand and utilize this technology to bring more convenience and security to life and work.
|
A PIR sensor, whose full name is "Passive Infrared Sensor," is also known as a pyroelectric infrared sensor. It is an electronic component that can detect infrared radiation emitted by the human body or other objects. |
 |
The PIR sensor works by sensing the infrared radiation emitted by the human body. It uses a dual sensor structure, differential signal detection, time filtering, and other principles to determine whether there is human activity, detect the human body, and trigger the signal.
PIR sensors are based on infrared radiation sensing. The average human body releases infrared radiation wavelengths, mainly in the 9-10um range. When a person enters the detection range of a PIR sensor, the sensor senses the infrared radiation emitted by the human body.
PIR sensors typically contain two separate sensors inside the sensor, called Pyroelectric Devices. These two sensors are placed on the Fresnel lens facing each other. When the human body enters the detection range, the two sensors feel the infrared radiation emitted by the human body and generate a corresponding electric charge.
The sensors perform a differential operation on the charge signals from the two sensors. When the human body moves within the sensor's range, this difference value changes, producing a difference signal. This difference signal is the basis for the PIR sensor to determine whether a human body is present.
The PIR sensor also performs time filtering to avoid false triggering. The sensor triggers an off-duty time counter when a human body enters the range. Before this counter is triggered, even if a new human body enters the range, the sensor will not trigger the alarm again.
PIR sensors are widely used in security, mainly for detecting intruders. They can be used with security equipment such as alarms and surveillance cameras to improve the effectiveness of the entire security system. When a person enters the sensor's sensing range, the sensor quickly triggers an alarm, preventing theft and intrusion.
PIR sensors can be used in smart home systems for lighting, air conditioning, and other functions. For example, when the sensor detects someone entering the room, it can automatically turn on the lights or adjust the air conditioning temperature to provide a more comfortable and convenient living environment.
In addition to the security and smart home fields, PIR sensors are widely used in automation control. They can realize functions such as human flow statistics and object movement detection. On industrial production lines, PIR sensors can detect the movement of objects, thereby achieving automated control and improving production efficiency.
As an important electronic component, PIR sensors are used in many fields, such as security, smart homes, and automatic control. Next, we will mainly discuss the application of PIR sensor LED lamps.
 |
 |
 |
 |
1. Applied to outdoor: Moisture-proof and dust-proof design.
2. Apply photosensitive control: Automatic light measurement; intense light does not induction.
3. Sensor direction distance: 4-10 Meters
4. Direction Angle: 120°
5. Ambient Light: >20Lux
6. Duty Time: 30-45S
7. Easy Installation: surface-mounted
8. Warranty: 3 years
9. Customized: The ambient light and duty time can also be customized for the specific customer's requirements. You also can choose the adjustable Time and Lux PIR sensor.
Used PIR sensor moisture-proof LED lamps can realize the lighting can be turned on automatically, so they are always suitable for stairwells, hallways, warehouses, garages, utility rooms, basements, washrooms, and other places of automatic lighting.
