RU111938U1 - RADIO CHANNEL SECURITY COMPLEX - Google Patents

Abstract

 Radio-channel alarm complex of protection, containing masked and obstructive means of detection, based on different physical principles of operation, a radio-channel communication system for transmitting alarm signals from means of detection to a receiving antenna of a base station, characterized in that it is equipped with radio transmitters made by technology based on the principle “Jumping radio frequencies”, the radio transmitters being capable of transmitting alarm signals from detection means three times, from two tnym confirmation of received information.

Description

The proposed utility model relates to technical means of protection, and can be used to create masked geographically distributed security systems, primarily the state border, where there is no possibility of using wired or cable communication and power lines.

The well-known alarm system "Radio barrier" (Innovation company LLC "POLYUS-ST, http://www.radiobarier.ru, E-Mail: info@radiobarier.ru), containing detection tools based on different physical principles of operation (seismic, radio wave , infrared, magnetometric). Radio communication between the devices of the complex is based on a special bi-directional secure radio channel. When installed on the ground between devices, information exchange routes are automatically established. Each detection tool works as a repeater, thereby allowing signaling information to be transmitted over a considerable distance. Alarms from the detection means are transmitted to the base station of the stationary operator's console.

Signs of an analogue that match the features of the proposed utility model:

1. The use of a radio channel communication system for transmitting alarm signals from detection means to the base station of a stationary operator panel.

2. The presence in the complex of camouflaged detection tools based on different physical principles of action and providing complete secrecy of their installation on the ground.

3. Lack of wire or cable communication lines and power supply.

4. Use of autonomous power supplies.

The disadvantages of this prototype device include the following:

1. The use of fixed frequencies for radio signaling devices significantly reduces the noise immunity and reliability of the radio channel communication system and the signaling system as a whole when random radio interference occurs, or when using radio communication suppression means.

2. The lack of direct radio communication between the radio signaling devices and the remote base station and the relaying of radio signals through neighboring radio signaling devices, the radio communication distance between which is from 0.5 to 1.5 km, significantly reduces the reliability of the radio channel communication system. In case of failure of at least one radio signaling device, the communication of the previous radio signaling devices with the stationary operator panel is terminated.

3. The total length of the protected areas does not exceed 2 km.

4. Frequent data exchange between the signaling devices and the remote base station does not provide radio masking.

The technical result obtained by the implementation of the utility model is to increase the noise immunity and reliability of the radio-channel alarm complex of protection. Providing a stable communication range of up to 30 km when transmitting detection equipment to a receiving antenna of a base station from a mundane antenna. Ensuring continuous stationary blocking of sites up to 60 km long.

Providing radio masking.

The technical result is achieved by the fact that in the radio-channel signaling complex of protection, which contains masked and obstructive means of detection, based on different physical principles of operation, the radio-channel communication system for transmitting alarm signals from the detection means to the receiving antenna of the base station, the following difference is provided - it is equipped with radio transmitters, made according to the technology based on the principle of "jumping radio frequencies", and the radio transmitters are made with the possibility of three times soap has alarm signals from the detection means, with a double confirmation of the received information.

Between the set of essential features of the claimed object and the achieved technical result there is a causal relationship, namely:

1. Radio transmitters are made according to the technology based on the principle of "jumping radio frequencies." In accordance with this technology, each broadcast of radio transmitters is carried out at a new frequency out of 1024 pre-programmed communication frequencies. The principle of “jumping radio frequencies” is one of the effective methods of expanding the spectrum of the transmitted signal, in which the signal occupies a frequency band much wider than the band minimally necessary for transmitting information. The working frequency of the signal is tuned over a wide range of the allocated frequency range for the radio channel communication system in accordance with a pseudo-random code known on the receiving side of the radio channel communication system and unknown to the jammer. This principle is designed to build highly reliable information transmission systems over the air.

Each radio transmitter has its own pseudo-random frequency jump algorithm, which allows you to increase the protection against interference. The principle of pseudo-random selection of the operating frequency of the radio transmitter prevents the jammer from achieving effective influence on the radio channel communication system by organized interference by repeating the signal parameters and forces the electronic jamming system to distribute the noise spectral density either over the entire wide frequency range or over some parts of the frequency range of the radio channel communication system, leaving the remaining sections are free from interference.

The use of error-correcting coding in the system, capable of correcting a significant number of errors, as well as the reception method “with accumulation”, i.e. three-time transmission of a message with confirmation, at least twice, of the received information also helps to increase the noise immunity and reliability of the radio-channel signaling complex of protection.

2. The radio channel communication system is operated in simplex mode at frequencies in the range from f = 143 MHz to 174 MHz. In the indicated frequency range, 1024 narrow-band channels are organized. Due to the narrow frequency band, and hence the low noise level in each of the 1024 channels, the sensitivity of the receiving path is characterized by a threshold sensitivity of 0.01 μV, which is 20 times higher than the sensitivity of receivers using traditional methods for constructing radio channel communication systems whose sensitivity typically 0.2 μV. This allows, with a transmitter power of 2 W, to bring the range of stable communication to 30 km when transmitting detection equipment to a receiving antenna of a base station from a mundane antenna.

3. Simultaneous reception in all 1024 independent narrow-band channels allows receiving information simultaneously from all radio transmitters that are broadcast on the air at the moment. The maximum number of radio transmitters in the complex is 600 pcs. This, as well as a long range of stable communication (up to 30 km), when transmitting detection equipment from a mundane antenna to a receiving antenna of a base station, allows for continuous stationary blocking of sections up to 60 km long.

4. The radio channel communication system operates in simplex mode at frequencies in the range from f = 143 MHz to 174 MHz. In this frequency range, 1024 narrow-band channels are organized. Radio transmitters are used only for transmitting alarm signals from the detection means to the receiving antenna of the base station. What provides a radio masking of a radio-channel communication system.

The technical essence of the proposed utility model is illustrated by drawings, which depict:

Figure 1 - Structural diagram of a radio-channel alarm system of protection.

Figure 2 - Placement of the radio transmitter installed in the ground.

Figure 3 - Receiving antenna of the base station.

Figure 4 - Automated workstation operator.

Figure 5 - Cabinet precinct with an autonomous power source.

6 - Cabinet precinct with an autonomous photoelectric power supply system.

Figure 2 shows the following notation:

1 - antenna of a radio transmitter installed in the ground.

Figure 3 shows the following notation:

2 - receiving antenna of the base station.

Figure 4 shows the following notation:

3 - hardware cabinet of the automated workplace of the complex operator.

Figure 5 shows the following notation:

4 - the antenna of the radio transmitter installed in the precinct cabinet;

5 - a precinct cabinet;

6 - processing units barrage detection means;

7 - a radio transmitter installed in the precinct cabinet;

8 - rechargeable battery.

Figure 6 shows the following notation:

5 - a precinct cabinet;

9 - solar module autonomous photovoltaic power system.

The proposed radio channel signaling security complex consists of:

1. Masked detection tools.

2. Obstructive means of detection.

3. Radio channel communication system.

4. The automated workplace of the operator.

The above structural elements are made as follows:

1. As masked detection tools, seismomagnetometric and magnetometric detection tools are used, which are used for covert signaling blocking of extended security lines. Cable sensitive elements of these means of detection perform the function of a seismic and magnetometric transducer, which records and converts into mechanical signals mechanical vibrations of the soil and local changes in the magnetic field. They consist of three cables, 250 m long, laid in the ground in parallel, at a distance

1 m from each other, at a depth of 0.3 m. Cable conductors are switched at their ends in a certain way, after laying the cables in the ground. The processing units of these detection means and radio transmitters are installed in the ground, together with the battery and antenna 1, the upper pin part of which is above the ground.

2. As protective means of detection, vibrational means of detection are used. Cable sensing elements of these detection tools are placed on the signal fence, which is a single-row mesh or trellised fence on racks installed in the ground. Processing units 6 of these detection tools are installed in the closet precinct 5.

3. The radio channel communication system consists of: radio transmitters installed in the ground, radio transmitters installed in the precinct cabinets 7, and a receiver installed in the equipment cabinet 3 of the automated workstation of the complex operator.

The design of the first type of radio transmitter ensures its installation in the ground together with the battery and antenna 1, the upper pin part of which is located above the ground (Figure 2). A 7.4 V lithium battery with a capacity of 100 Ah provides continuous round-the-clock operation of the radio transmitter and the masked detection tool connected to it for one year.

The second type of radio transmitter 7 is designed to work with protective means of detection and is located in the closet precinct 5 along with the battery 8, voltage 12 V and a capacity of 50 ÷ 60 Ah (Figure 5).

Instead of the battery, the precinct cabinet can be equipped with an autonomous photoelectric power supply system (Fig.6).

The power supply system provides continuous round-the-clock power supply of a load of 12 V, power up to 20 W and does not require maintenance for a service life of 10 years.

The base station of the radio channel communication system consists of a receiver and a receiving pin antenna 2. A receiving antenna 2 is mounted on a tower at an altitude of 30-40 m (Figure 3). The receiver is mounted in a hardware cabinet 3 of the automated workstation of the complex operator (Figure 4) and connected to a device for displaying information of a higher level system. The base station is powered by 220 V ± 15% AC power, the base station power consumption does not exceed 30 watts. The base station also includes a backup battery that guarantees the operation of the receiver with a complete power outage for 4 hours.

The source of information:

Innovation company LLC POLYUS-ST, http://www.radiobarier.ru, E-Mail: info@radiobarier.ru.

Claims (1)

Radio-channel alarm complex of protection, containing masked and obstructive means of detection, based on different physical principles of operation, a radio-channel communication system for transmitting alarm signals from means of detection to a receiving antenna of a base station, characterized in that it is equipped with radio transmitters made using technology based on the principle "Jumping radio frequencies", and the radio transmitters are configured to triple the transmission of alarm signals from the detection means, with two tnym confirmation of received information.