China OEM Motion Sensor Factory Supplier

Motion sensing technology has already blossomed everywhere - VIDEO consoles, smartphones, TV remote controls and personal training devices - just as we Geotag mobile phone photos, play video games and surf channels through TV and cable set-top boxes. These things know where we are, what our goals are, and where we move. Today, let's talk about the motion sensor.

Type of motion sensor

Motion sensors can be divided into ultrasonic sensors, microwave sensors, tomography sensors and passive infrared sensors.

• Ultrasonic sensor 

The active ultrasonic motion sensor generates ultrasonic pulses and then determines the reflection of these waves on the moving object. Cats, dogs, fish and other animals can hear this sound wave, so the active ultrasonic alarm may upset them.

In addition, the ultrasonic motion sensor can be active or passive. Passive ultrasonic motion sensors need to pay attention to special sounds such as metal and broken glass, because these sensors are very sensitive and easy to produce false alarms.

• Microwave sensor

The microwave motion sensor detects motion by emitting continuous microwave radiation, which is similar to the working principle of radar velocimeter. The microwave motion sensor emits high RF and measures the reflection of the object by sensing the frequency shift. If it does detect a frequency shift, the motion detector is activated.

Microwave sensor is very sensitive. Sometimes it can see non-metallic objects and detect moving objects outside the target range. They cover a larger area than infrared sensors, but they are expensive and vulnerable to electrical interference. Moreover, the microwave sensor consumes high power, so it is often designed as the working mode of cyclic opening and closing. One of the common applications of microwave sensor is electronic police dog.

• Tomography sensor

Tomography sensors generate radio waves and detect them when they are disturbed. They can be monitored through walls and objects and are usually placed in such a way that the radio wave network covers a large area.

Tomography sensors are expensive, so they are usually used in warehouses, storage units and other situations that require a commercial level of security.

• Passive infrared sensor (PIR)

All objects whose temperature is higher than absolute zero can produce thermal radiation. The higher the temperature, the greater the total energy radiated. Passive infrared sensors apply the principle of thermal radiation. It senses motion by sensing temperature changes between the background and the warm body.

Passive infrared sensor is small, easy to use, cheap and low power consumption. It can be used permanently. It is usually used for indoor alarm, automatic sensing of toilet sink, etc.

Application of motion sensor

✔️Smart phones and wearable devices

Motion sensors are used for smart phones and wearable devices. In addition to motion sensors, it also includes some other common sensors, such as magnetic sensors, accelerometers and gyroscopes.

Including:

• The magnetic sensor detects motion by using the earth's magnetic field, and the indoor positioning result is more accurate than GPS;

• Accelerometers can sense tilt, acceleration and vibration shock, and are usually used in all types of wearable devices and handheld devices;

• The gyroscope can measure the speed of the device and can be used in laptops, smartphones and digital cameras to provide a higher quality game and navigation experience.

✔️Family and personal safety

Motion sensors are also widely used in family and personal safety. A safety system without motion sensors is impossible.

Including:

• Motion detector lights, they can provide a clear view even on busy nights, so that homeowners can know whether there are intruders at night. They also save costs, such as closing automatically if the homeowner forgets to close;

• The mobile detector alarm is usually integrated with the anti-theft alarm and gives an alarm when an intruder is detected. They are used to scare away thieves and ensure the safety of houses;

• Motion detector camera, like CCTV camera, is very useful in catching thieves. When unapproved entries are observed, they can be used to trigger alerts or send notification alerts. When these slim and effective cameras are placed in place, it can provide great security;

• Motion sensor is also an important part of wireless doorbell. It will give an alarm when guests arrive at the door.

In addition, automatic ticket gate, automatic door, active infrared sensor are used to indicate whether there are products on the conveyor belt, liquid level controller using ultrasonic sensor... These are some practical applications of motion sensor.

Ningbo Technic Lighting has become a well-known china oem motion sensor, if you need help, plz feel free to contact us.

China OEM Motion Sensor Factory Supplier

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