Microwave type motion sensors (infrared) are used to protect objects indoors and outdoors. The device consists of a sensor and a transmitter. The expander for models is installed with filters. The sensor connects to the receiver.
Some modifications use a regulator. The main parameters of the models include conductivity, the limiting time of signal interruption, the angle of coverage, as well as the range. Buying a high-quality infrared motion sensor in our time is possible at a price of 7 thousand rubles.
The principle of operation of devices
The principle of operation of the device is based on the capture of microwave pulses. In this case, the sensor is responsible for the conductivity of the signal. The expander itself generates short-wave pulses. To increase the range of the device, a receiver is used. The signal is transmitted to the converter via a transceiver. Modifications with regulators are equipped with microcircuits.
If we talk about sensitive devices, then they use a contact receiver. It is installed behind the sensor. Data transmission to the converter can be done through a modulator.
Home Models
Home models are mainly made with two sensors. The moisture resistance system is used in the SK series. In this case, the limit frequency does not exceed 20 Hz. The threshold sensitivity of the transmitters is at 3 mV. Some models use a wired thyristor. The dimensions of the sensors are quite different. Wall mounted models. The devices are powered through a power supply of 20 and 30 V. For many modifications, the receiver is used without a filter. In size, they are compact.
The case is most often made of polymer. It is also important to note that modifications with overlays are presented on the market. The viewing angle is quite high. More noteworthy are models with two adapters. Their energy consumption is high. However, the maximum range is 170 meters. The minimum permissible operating temperature of microwave models for the home varies around -20 degrees. You can buy a good infrared sensor on the market for 8 thousand rubles.
Devices for shops
For stores on the market are low-frequency and thyristor devices. The first option involves the use of single-junction capacitors. Their power is low. The range for sensors of this type, as a rule, is at the level of 80 meters. The signal is transmitted through an adapter. Converters to the motion sensor (microwave) are installed with different conductivity. The minimum allowable operating temperature level is on average -20 degrees. The moisture protection system is used in various series.
Only models with wall adapters are installed. The mounting height in this case depends on the viewing angle. Also note the size of the sensor. If we consider thyristor sensors, then they are able to boast of high conductivity. The range of the modification on average is 210 meters. Receivers are used with transition filters. Power supplies for connection are selected at 20 and 30 V. Some sensors use an overvoltage protection system.
Alarm mode is set via the regulator. The volume of the sound signal is set through the control unit. Models of this type are installed, usually at a height of 1.4 meters. You can buy a high-quality infrared sensor on the market for 6 thousand rubles.
Warehouse Modifications
Modifications for warehouses have a high range. Sensors in models are used with transition filters. Converters to a motion sensor (microwave) are often installed without plates. Some models have a thyristor. Connection to the power supply is via an adapter. The minimum frequency setting for microwave devices is 10 Hz.
According to the degree of protection, the sensors are quite different. There are many models with horizontal stands on the market. Screws are used to fix them. The accuracy of the definition of the object is not more than 0.2%. There is a good IR motion sensor in the market of 9 thousand rubles.
Features of shortwave sensors
Sensors of this type are most suitable for home. Expanders are used with wire capacitors. They have a low range. However, it is important to note that the frequency of the sensors averages 23 Hz. The moisture protection system they use is the KS series. The receivers for the motion sensor (microwave) are selected both digital and analog type.
Controllers are used to adjust the viewing angle. Many models lack a filter. The accuracy of determining the object varies around 0.3%. The signal conductivity of the models is about 5 microns. In terms of dimensions, the devices are compact and invisible on the wall. The system from hacking is rarely installed. It is also important to note that modifications with vertical holders are on the market. Install them only on racks.
The interruption time of a good model is 2 seconds. Sensors of the indicated type are quite different in sensitivity. Devices are not suitable for storage facilities. You can buy a good mini-motion sensor in the store for 8500 rubles.
Modifications with 3 A converters
Microwave sensors with index transducers are great for protecting large areas. Extenders for devices are often selected resistor type. To protect models from hacking, modulators are used. In some cases, the converters are installed through a loop. Power supplies for devices are used at 30 V.
The moisture protection system for the modifications is used by the KS series. Models with controllers are rare on the market. The maximum sensitivity of the sensors is 5.4 mV. The conductivity of the models does not exceed 3 microns. The cost of the device is quite different. If we consider modifications with thyristors, then they have high-frequency receivers. They stand on the market about 12 thousand rubles. A motion sensor (microwave) without a thyristor will cost the buyer 8500 rubles.
5 A devices
Modifications with 5 A converters are more suitable for small rooms. As a rule, power supplies are selected for them at 15 V. Capacitors are often used dual-junction type. Adapters for models are selected low sensitivity. The conductivity parameter of the devices averages 4.3 microns. Thyristors in modifications are used very rarely. The accuracy of the definition of objects depends on the transmitter.
The signal to the power supply is mainly transmitted through the loop. Some versions use two capacitors. The power consumption parameter of the sensors is 350 watts. Modifications with vertical and horizontal racks are on sale. They are installed at a height of 1.3 meters. For many models, the viewing angle can be adjusted. In the store, a high-quality sensor of the type presented is available to the user at a price of 7 thousand rubles.
Models with a 10 A converter
Sensors with 10 A converters are very popular. However, it is important to note that they do not differ in compact dimensions. Capacitors are often installed pulse type. The wavelength of the sensors depends on the adapter. Modifications with expanders are rare. For open areas, models are good. The hacking protection system they use is of the third class.
On average, the conductivity of the sensors does not exceed 5.5 microns. The angle of coverage of the territory depends on the size of the sensor. It is also important to consider the height of its installation. On average, the permissible operating temperature of the models is -30 degrees. Interruption time can be configured. For this, a modulator is used in the controller. There is a model on the market about 10 thousand rubles.
Using diffuser models
Modifications with a diffuser are used to protect storage facilities. The sensitivity parameter is quite high. If we consider high-frequency devices, then their range is at the level of 170 meters. Hacking protection system is used in the first or second class. Sensors are selected with filters. The sensitivity parameter does not exceed 4 mV.
For small rooms, devices are rarely used. As a rule, modifications with horizontal uprights are presented on the market. Holders for them are selected with screws. The model is mounted at a height of about 2 meters. Receivers in devices are used with adapters. You can buy a device at a price of 9 thousand rubles.
Features of sensors like "Alpha"
This microwave motion sensor for lighting is often used in stores. The main advantage of the modification is high conductivity. The signal in this case is transmitted through the loop. Hacking protection system is used in the first class. The user can adjust the angle of rotation of the sensor. The adapter is installed behind the controller.
The extender is responsible for receiving the signal from the converter. The model stand is installed in an upright position. The sensor is mounted on the screws. The recommended installation height is 1.6 meters. There is no moisture protection system in the device. Permissible operating temperature is -30 degrees.
The interruption time is set manually. The threshold sensitivity of the sensor of the presented series is 4.4 mV. The maximum power consumption is 320 watts. Power supplies for devices are used at 15 V. It is also important to note that this model is often used in the Smart Home system. The price of the device varies around 8800 rubles.
WS-301 Series Sensors
This ultrasonic motion sensor is in demand in security agencies. The power supply in the device is used at 20 V. If you believe the reviews of experts, the receivers of the models are used in high quality. The conductivity parameter of the sensor is 4.7 microns. The receiver is installed through the loop. Directly, the housing is used with a moisture protective pad.
The indicator of electricity consumption is at the level of 320 watts. Capacitors are used switched type. Thus, system malfunctions are rare. To protect the device from breaking, thyristors are used. The girth angle of this model cannot be adjusted. There is no controller at the sensor. You can buy a model at a price of 6900 rubles.
Purpose of sensors of the class WS-305
The sensors of the presented series are suitable for rooms with an area of 20 square meters. meters. Modifications are installed on wide horizontal racks. To connect the device, a 10 V power supply is used. The parameter of maximum energy consumption is at the level of 360 W. The vertical viewing angle can be adjusted if necessary. The signal is transmitted from the unit due to the adapter.
The expander on the motion sensor for the house is installed a single-pole type. If you believe the reviews of experts, then the problems with high humidity are not terrible for the device. A protective lining is provided for the model. The rack is attached to the housing thanks to the screws. The range of the system is 140 meters. The thyristor in this case is absent. It is also important to note that this motion sensor is for alarm in the market of 8800 rubles.
Features of sensors type DDVS803
The presented motion sensor for signaling is in demand among owners of stores and warehouses. The viewing angle can be adjusted using the controller. The sensor is highly conductive. The motion sensor is switched on through a 10 V power supply. The manufacturer does not provide a modulator. It is not possible to adjust the sensitivity of the device. If you believe the experts, the rack is used in high quality.
For fixing, two clamps are provided. The receiver of the model is rated at 22 Hz. False positive problems rarely occur. The accuracy of determining the object is not more than 0.3%. It is also worth mentioning that this model is often used in the Smart Home system. The price of modification fluctuates around 9 thousand rubles.