Temperature and humidity-body sensors

Since temperature and humidity are closely related to people's actual life, a temperature-humidity sensor is produced. The temperature-humidity sensor is a device that can convert temperature and humidity into electrical signals that can be easily measured and processed. Devices, temperature and humidity sensors on the market generally measure the amount of temperature and relative humidity.

Combustible gas sensor

The combustible gas sensor is a detector that responds to one or more combustible gas concentrations. At present, the combustible gas sensor mainly includes a catalytic type and a semiconductor type. Catalytic flammable gas sensors measure the concentration of flammable gases by the change of resistance after heating of refractory metal platinum wire. When the flammable gas enters the detector, it will cause oxidation reaction on the surface of the platinum wire, and the heat generated will make the temperature of the platinum wire. As a result, the resistivity of the platinum wire changes, and the concentration of the combustible gas is measured. The semiconductor detector operates with a sensitive gas-sensing semiconductor device. When the combustible gas enters the detector, the semiconductor resistance decreases, and the value decreases. Corresponds to the combustible gas concentration.

Smoke sensor

The smoke sensor is a device for monitoring fire smoke by monitoring the concentration of smoke. It is a device that converts the concentration of smoke in the air into an output signal with a corresponding relationship. The smoke sensor is divided into a photoelectric smoke sensor and an ion smoke sensor. Two kinds.

Human body infrared detector

Because the human body has a certain temperature, generally about 37°C, it emits infrared light with a wavelength of about 10 μm, and about 10 μm of infrared light with an operating frequency of about 10 μm works.

Glass break detector

The glass break detector is one of the security detectors in the smart home. It is used to detect whether the window glass in the home is destroyed by the person 1. If someone breaks the glass and illegally invades the room, it will send an alarm signal. According to different working principles, glass break detectors can be classified into sound-controlled single-technology glass detectors and dual-technology glass break detectors. The double-technology glass breakage detector is divided into a double-technology glass breakage detector combined with a sound control type and a vibration type, and a double-technology glass breakage detector that simultaneously detects infrasonic waves and glass breakage and high-frequency sound.

Wireless curtain detector

Because of the characteristics of low price and stable technical performance, wireless curtain detectors are widely used in the field of smart homes. Wireless curtain detector is a kind of passive infrared detector. It is usually installed near the window or on the top. When someone enters the area of ​​detection, the detector will automatically detect the human activities in the area, such as the discovery of dynamic movement phenomenon. The wireless curtain detector will send an alarm signal to the control panel.

Wireless magnetic detector

Wireless door sensor is used in the security field and door control area of ​​smart home. It is a device used to detect whether doors, windows, drawers, etc. are opened or moved illegally. It cannot send an alarm by itself. Send some kind of coded alarm signal to the control host. When the control host receives the alarm signal, it will pass the signal to the alarm device, and the alarm device will issue an alarm sound.