RU38412U1 - RADIO RADIATION DEVICE FOR PERIMETER PROTECTION - Google Patents

Abstract

A radio-beam device for guarding the perimeter, consisting of a receiver and transmitter spaced in space, characterized in that the transmitter and receiver of adjacent pairs are connected by an interconnect cable, and in one of the pairs, a matching unit is located instead of the receiver, the output of which is connected to the input of the control panel, and the device can consist of at least two pairs.

Description

Radio beam device for perimeter security.

The utility model relates to burglar alarms and can be used to protect the perimeters of objects of complex configuration, both equipped with barriers of various types, and without barriers. In addition, the invention can be used to create mobile rapidly deployable detection tools to block temporary and local boundaries of protection.

Known electromagnetic alarm system for detecting an unauthorized person in a protected area (US Patent N 4366473, NKI 340/562, 1982, Capacitive electromagnetic alarm system). A device that implements this method is described in the same patent and contains a wired antenna line isolated from the ground, a high-frequency signal generator connected to the antenna through a matching impedance, and a processing unit containing an amplifier, detector, bandpass filter, and threshold circuit. The processing unit is connected to the antenna and generates an alarm signal when the input voltage changes due to a change in the antenna capacitance when the intruder approaches.

The disadvantages of the device for detecting targets are low noise immunity when rocking the wire line under the influence of wind, sticking to it wet snow, getting wet and leaks and in this regard, high requirements for the design of the antenna, the tension of the wire, its isolation from the ground.

Closest to the proposed is a device with a spatially spaced transmitter and receiver of HF oscillations. The device comprises a transmitter and a receiver of an RF electromagnetic field, a wire line

2004104274

 ° G08B13 / 24

surface radio waves as a sensitive element consisting of two guiding radio waves of the bus wires, the first bus inputs are connected to the bipolar output of the transmitter, the second bus inputs are connected to the bipolar input of the receiver, a transmit-receive circuit and many processing channels, each of which contains a sampling and storage circuit, a circuit delays, bandpass filter and threshold actuator. (Patent No. 2145441, Pub. 2000.02.10 G08B13 / 24).

The disadvantage of this device is the low noise immunity to climatic factors, the presence of wired synchronizing and control connections, which reduces the reliability of the system as a whole, it is necessary to install and initialize the "alarm circuits from each receiver, and during installation, precise adjustment of the transmitter and receiver is required. This circumstance limits the scope of the device.

The objective of the utility model is to increase the noise immunity to climatic factors, simplify the design of the device, increase the area of the protected area.

The problem is solved in that in the known device for guarding the perimeter, consisting of transmitter and receiver spaced in space, the transmitter and receiver of adjacent pairs are connected by an interconnect cable, and in one of the pairs, instead of the receiver, a matching unit is located, the output of which is connected to the input of the control panel, moreover, the device may consist of at least two pairs.

In fig. 1 is a structural diagram of a device for guarding the perimeter;

fig. 2. - block diagram of the transmitter;

fig. 3. - block diagram of the receiver; The device consists of paired transmitter spaced in space

(Rx) 1 and receiver (Rx) 2, moreover, the transmitter 1 and the receiver 2 of adjacent pairs are connected by an interconnect cable, and in one of the pairs, instead of the receiver 2, there is a matching unit 3, the output of which is connected to the input of the control panel 4.

The transmitter 1 is designed to transmit the encoded pulse sequence in the working frequency range in any linearly polarized broadcast and recognition of the state of the site, which is part of the protected perimeter. The main components of the transmitter are a decisive device (RU), the output of which is connected to the input of the microwave generator (VCO), the output of which is connected to a horn antenna (RA). A signal from the receiver of the PFM RU is received at the RU input through an interblock cable; it analyzes the received signal and generates the corresponding pulse sequences at the VCO inputs. SHUI generates a microwave signal which is radiated through space through the RA.

The receiver (PFP) 2, is designed to receive an encoded pulse sequence (microwave signal in the operating frequency range in any linearly polarized) from the ether. The main components of the receiver are a video amplifier (VU), the output of which is connected to the horn antenna of the RA. The signal is received by means of a horn antenna. In the WU device, the received signal is detected and amplified. The processed signal is transmitted via the inter-unit cable to the transmitting unit,

The coordination unit (BS) 3 is intended for receiving an encoded pulse sequence from the air and matching the output signal with the control panel. The main parts of the matching unit 3 are: a video amplifier VU, the output of which is connected to the input of the resolver RU, and the input of the resolver is connected to the horn antenna of the RA. Exit

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3 of the solver RU is connected to the input of the control panel 4.

The radio signal through RA is fed to the input of the slave. The supply voltage necessary for the operation of the VU device is generated by the RU device. The detected and amplified signal from the output of the slave goes to the input of the switchgear. At the output “P RU, a coded pulse sequence is generated, which is the input for the control panel.

The control panel PU 4 is designed to make decisions and display sound and symbolic information about the current state of the protected perimeter. The main parts of the control panel 4 (not shown in the diagram) are a decisive device, an indication and control device.

A radio beam device for guarding the perimeter operates as follows. The radio signal emitted by the transmitter 1 is received by the receiver 2, which is connected by an inter-unit cable to the transmitter 1 of the next pair and is located with the latter in one housing. The decisive device, which is part of all the transmitters 1, carries out the processing of the signal received from the receivers 2 and produces a decision on the condition of the site. The end transmitter 1 transmits a signal to the matching unit 3, which processes the received signal and generates a code sequence for the control panel 4. The control panel 4 generates an audible and symbolic indication of the current state.

The number of pairs of transmitters and receivers must be at least two.

The proposed utility model is used to protect the perimeter of a geographically distributed object in order to detect the fact of unauthorized entry, to notify the security service about this, and to display the facts of violation on the control panel.

4 Using the proposed utility model will allow

the device in almost all climatic zones, the absence of wired (cable) synchronizing and control connections increases the reliability of the device and reduces its cost.

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Claims (1)

A radio-beam device for guarding the perimeter, consisting of a receiver and transmitter spaced in space, characterized in that the transmitter and receiver of adjacent pairs are connected by an interconnect cable, and in one of the pairs, a matching unit is located instead of the receiver, the output of which is connected to the input of the control panel, and the device can consist of at least two pairs.