Environment Monitoring Sensors Manufacturer

Infrared Motion Detector And Infrared Detection Technology

infrared motion detector

The pyroelectric element in the infrared motion detector can detect and perceive the presence or movement of the human body, and convert the input signal of the pyroelectric element into a voltage signal, which is then processed by the microprocessor to find the alarm information.。

What are the infrared motion detector technology and control methods?

According to the number of channels, the number of beams, encoding methods, etc., the control methods of infrared motion detector technology can be divided into the following categories:

Single-channel infrared remote control switch mode

The basic mechanism of the transmitting circuit is composed of a pulse generator, a drive stage, and infrared emission. The structure of the receiving circuit is mainly composed of a photodetector, a high gain amplifier, a rectifier filter, a switch circuit, and an execution machine. From its structural composition, this is an extremely simple infrared detection system. The control is mainly through the switch circuit.

Single-channel stepping infrared remote control method

It can effectively increase the distance of infrared detection and increase the signal strength. It can be said that this is a pulse coding method.

Dual-beam infrared detection remote control method

Infrared rays are easily affected by animals and obstacles, resulting in transmission interruption problems, and may even cause system malfunctions. For this, dual-beam infrared detection remote control can be used.

Multi-channel infrared detection remote control mode

It is suitable for situations where there are many control objects and many remote control channels. According to the different control commands and command characteristics, the multi-channel infrared remote control is also divided into frequency division infrared detection, remote control, and code division infrared detection.

With the rapid development of science and technology, the advantages of infrared detection technology have also become more obvious, bringing great convenience to people’s lives, and infrared detectors have also been applied to many industries.

Renke Ceiling infrared motion detector adopts advanced signal analysis technology, uses an 8-bit low-power CMOS processor, and is equipped with high-performance sensing signals to process integrated circuits, with ultra-high detection and anti-false alarm performance.

The infrared pir motion sensor detector adopts a ceiling-mounted installation, small in size, internally equipped with a human body dual-element pyro-infrared sensor, and a small number of external components. The installation height is between 2.5-6m. When the installation height is 3.6m, it can form a detection range of 6m in diameter. , Forming a conical space from top to bottom, 360° full prevention and detection, is a passive infrared detector with extremely high stability.


When an intruder passes through the detection area, the infrared motion detector will automatically detect the activities of the human body in the area. The equipment also has the function of preventing false alarms and automatic temperature compensation. The temperature is between -10℃ and 50℃, and the relative humidity is ≤95%. Working in a high-quality environment, there will be no condensation.

The infrared motion detector is accurate in detection and stable in performance. It can work uninterrupted for 24 hours and guard every day with peace of mind.


Infrared detectors can be used in fences, lawns, indoors, and other spatial areas that need to be protected. It is easy to use and install and can be used in combination with other detectors. At the same time, it has good safety, reliability, and economy. It is the main choice of protection products at present.