Microwave motion sensors (infrared) are used to protect objects indoors, as well as in open areas. The device consists of a sensor and a transducer. 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 maximum signal interruption time, the coverage angle, and the range. You can buy a high-quality IR motion sensor in our time at a price of 7 thousand rubles.
The principle of operation of devices
The principle of operation of the device is based on capturing microwave pulses. In this case, the sensor is responsible for the conductivity of the signal. The expander itself creates shortwave pulses. A receiver is used to increase the range of the device. The signal is transmitted to the converter through the 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 can be transmitted to the converter via a modulator.
Home models
Home models are mainly produced with two sensors. The moisture resistance system they use is the SK series. In this case, the limiting frequency does not exceed 20 Hz. The threshold sensitivity of the transmitters is at the level of 3 mV. Some models use a wired thyristor. The dimensions of the sensors are quite different. Models are installed on the walls. The devices are powered through a 20 and 30 V power supply. For many modifications, the receiver is used without a filter. They are compact in size.
The body is most often made of polymer. It is also important to note that there are modifications with overlays on the market. Their viewing angle is quite high. Models with two adapters also deserve attention. Their energy consumption is high. However, the maximum range is 170 meters. The minimum allowable temperature for the operation of microwave models for the home fluctuates around -20 degrees. You can buy a good infrared sensor on the market for 8 thousand rubles.
Devices for shops
Low-frequency and thyristor devices are on the market for shops. The first option involves the use of unijunction capacitors. Their power is low. The range of this type of sensors, as a rule, is at the level of 80 meters. Signal transmission is carried out at the expense of an adapter. The transducers for the motion sensor (microwave) are installed with different conductivity. The minimum allowable operating temperature level inthe average is -20 degrees. The moisture protection system is used by various series.
Models with adapters are installed on the wall only. The mounting height in this case depends on the viewing angle. The size of the sensor should also be considered. If we consider thyristor sensors, then they are able to boast of high conductivity. The range of the modification is on average 210 meters. Receivers are used with transient filters. Power supplies for connection are selected for 20 and 30 V. Some sensors use an overvoltage protection system.
The alarm mode is configured through the regulator. The volume of the sound signal is set through the control unit. Models of the specified type are installed, as a rule, at a height of 1.4 meters. You can buy a high-quality infrared sensor on the market for 6 thousand rubles.
Stock modifications
Modifications for warehouses have a high range. The sensors of the models are used with transient filters. Transducers for a motion sensor (microwave) are often installed without plates. Some models have a thyristor. The connection to the power supply is made through an adapter. The minimum frequency parameter for microwave devices is 10 Hz.
The sensors are quite different in terms of security. There are many models with horizontal racks on the market. Screws are used to fix them. The accuracy of determining the object is no more than 0.2%. There is a good IR motion sensor on the market for 9 thousand rubles.rub.
Features of shortwave sensors
Sensors of this type are most suitable for the home. They use expanders with wire capacitors. Their range is low. However, it is important to note that the average frequency of the sensors is 23 Hz. They use the KS series to protect against moisture. Receivers for the motion sensor (microwave) are selected both digital and analog type.
Controllers are used to adjust the viewing angle. Many models do not have a filter. The accuracy of determining the object fluctuates 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. They rarely install a hacking system. It is also important to note that there are modifications with vertical holders on the market. They are only allowed to be installed on racks.
The break time of a good model is 2 seconds. In terms of sensitivity, the sensors of the specified type are quite different. For storage facilities, the devices are not suitable in the best way. You can buy a good mini motion sensor in the store for 8500 rubles
Modifications with converters for 3 A
Microwave sensors with point converters are great for protecting large areas. Expanders for devices are often selected as a resistor type. Modulators are used to protect models from hacking. In some cases, converters are installed via a loop. Power supplies for devices are used at 30 V.
Moisture protection system for modificationsapplied to the KS series. Models with controllers are rare on the market. The limiting sensitivity of the sensors is at the level of 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 cost about 12 thousand rubles on the market. A motion sensor (microwave) without a thyristor will cost the buyer 8,500 rubles
5 A devices
Modifications with 5 A converters are more suitable for small rooms. As a rule, power supplies for them are selected for 15 V. Capacitors are often used in a two-junction type. Adapters for models are selected with low sensitivity. The conductivity parameter of devices averages 4.3 microns. Thyristors in modifications are used very rarely. Target detection accuracy varies by transmitter.
The signal to the power supply is mainly transmitted via a loop. Some modifications use two capacitors. The power consumption parameter of the sensors is 350 W. 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 presented type can be purchased by the user at a price of 7 thousand rubles.
Models with 10A converter
Sensors with 10 A converters are very popular. HoweverIt is important to note that they do not differ in compact dimensions. Capacitors are often installed in the impulse type. The wavelength of the sensors depends on the adapter. Modifications with expanders are rare. Models fit well for open areas. The burglary protection system they use is of the third class.
On average, the conductivity of 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 models is -30 degrees. The interruption time can be adjusted. To do this, the controller uses a modulator. The model costs about 10 thousand rubles on the market.
Using models with diffusers
Modifications with a diffuser are used to protect warehouses. Their sensitivity is quite high. If we consider high-frequency devices, then their range is at the level of 170 meters. The burglary protection system is used first or second class. Sensors are selected with filters. The sensitivity parameter does not exceed 4 mV.
For small spaces, devices are rarely used. On the market, as a rule, modifications with horizontal racks are presented. 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 the device at a price of 9 thousand rubles.
Features of "Alpha" sensors
This microwave motion sensor for lightingoften used in stores. The main advantage of the modification can be called high conductivity. The signal in this case is transmitted through the loop. The anti-burglary system is first class. The sensor angle can be adjusted by the user. The adapter is installed behind the controller.
The expander is responsible for receiving the signal from the transducer. The stand of the model is installed in a vertical position. The sensor is attached with screws. The recommended installation height is 1.6 meters. There is no moisture protection system in the device. The allowable 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 indicator is 320 watts. Power supplies for the operation of 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 fluctuates 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 of high quality. The conductivity parameter of the sensor is 4.7 microns. The receiver is installed via a cable. The case itself is applied with a moisture-proof lining.
The power consumption indicator is at the level of 320W. Capacitors are used of the switched type. Thus, system failuresoccur rarely. Thyristors are used to protect the device from hacking. The wrap angle of this model cannot be adjusted. The sensor does not have a controller. You can buy a model at a price of 6900 rubles.
Assignment of class WS-305 sensors
Sensors of the presented series are suitable for rooms with an area of 20 sq. meters. Modifications are installed on wide horizontal racks. A 10 V power supply is used to connect the device. The maximum power consumption parameter is 360 W. The vertical viewing angle can be adjusted if necessary. Signal transmission from the block is carried out at the expense of an adapter.
The expander for the motion sensor for the home is set to a single-pole type. If you believe the reviews of experts, then problems with high humidity are not terrible for the device. The model has a protective lining. The stand is attached to the case with screws. The range of the system is 140 meters. The thyristor is absent in this case. It is also important to note that this motion sensor for signaling on the market costs 8800 rubles.
Features of sensors type DDVS803
The presented motion sensor for alarm is in demand among the owners of shops and warehouses. The viewing angle can be adjusted using the controller. The sensor is highly conductive. The motion sensor is turned on through a 10 V power supply. The modulator is not provided by the manufacturer. It is not possible to adjust the sensitivity of the device. According to experts,rack used high quality.
Two clamps are provided for fastening. The receiver of the model is designed for 22 Hz. False positive problems are rare. The accuracy of determining the object is no more than 0.3%. It should also be mentioned that this model is often used in the Smart Home system. The price for the modification fluctuates around 9 thousand rubles.
