RU80049U1 - COMBINED DETECTOR - Google Patents

Abstract

Combined detection means containing capacitive detection means and vibration detection means is intended for signaling blocking of perimeters of objects and extended security lines on plain and rough terrain. This tool is characterized in that the detection tools included in it, cable power and low-current networks are structurally located on one fence, which allows to reduce the total length of cable networks and, accordingly, reduce energy consumption, as well as significantly reduce the cost of equipment, construction and installation works.

Description

The proposed utility model relates to technical means of guarding the perimeters of objects, in particular to combined means of detection, consisting of two or more means of detection, based on different physical principles of operation, and can be used for signaling blocking of the perimeters of objects and extended boundaries of protection on a plain and crossed terrain.

There is a well-known two-way alarm system for signaling blocking of perimeters of objects and extended security lines on plain and rough terrain, consisting of two detection tools based on different physical principles of operation, where the capacitive principle detection means is used as the first line, and the second line as the second line means for detecting the vibrational principle of action.

The means for detecting the capacitive principle of operation provides an alarm blocking of the upper part of the fencing made of concrete or brick by creating a security line in the form of a metal fence, which is a sensitive element. This tool gives a response signal when you try to overcome the obstacle by climbing over its top, with the touch of a sensitive element with your hands (including

gloves or mittens), as well as with the closure of the sensor to the ground. As a sensitive element, a mesh fence is used. Structurally, the fence is a single-row, metal, mesh cloth, mounted on metal racks, vertically mounted on a concrete or brick fence. The fence is electrically isolated from metal racks. The fence is mounted in the form of separate sections, electrically isolated from each other. Each section is divided in the center into two flanks, electrically isolated from each other.

Sensitive elements of the flanks are distributed tanks relative to the ground. The principle of operation of capacitive detection means is based on recording changes in the electrical capacitance of the flank sensing element relative to the ground. In standby mode, the measuring circuit of the capacitive detection means is in a balanced state. As soon as the intruder tries to overcome the obstacle on one of the flanks, by touching the sensor with his hands, or shorting it to the ground, this will lead to a change in the electrical parameters of the sensor of this flank and, as a result, to unbalance the measuring circuit and the response signal at the output of the electronic unit . The electronic unit provides processing according to a certain algorithm of electrical signals arriving at its inputs from two sensing elements, which are the left and right flanks of the signal fence, generating an output response signal and issuing it to the information collection and processing system, or to the control panel.

The means for detecting the vibration principle of operation provides an alarm blocking of barriers made of metal mesh or grating. This tool performs

the conversion of mechanical vibrations (vibrations) of cable sensitive elements rigidly fixed on the fence, arising when the intruder overcomes the fence, into electrical signals that enter the electronic unit, which processes these signals according to a certain algorithm, generates an output response signal and provides it to the collection system and information processing, or in the control panel.

Structurally, the signal fence is a single-row mesh or trellised fence on metal racks installed in the ground, equipped with cable sensors. Fastening of cable sensitive elements to the barrier web is carried out using light-resistant plastic ties. To ensure anti-undermining properties of the detection means, the barrier web is buried in the ground. The signaling barrier is a physical obstacle for the intruder to penetrate the protected object and ensures the transmission of the vibration of his canvas, which occurs when trying to dig under the barrier, destroying the barrier by snacking or sawing, or climbing the trespasser through the barrier, onto cable sensitive elements.

The cable sensing element consists of a section of a triboelectric cable and provides the conversion of mechanical vibrations of the barrier web into electrical signals due to the triboelectric effect that occurs when the belt insulation of a cable comes into contact with metal conductors. When a cable is deformed or vibrated, electrical signals arise between its conductive conductors and the screen, the frequency - time selection of which allows one to distinguish signal components that are characteristic only for a person when overcoming a barrier. The use of two cable sensitive elements can improve the noise immunity of the product by subtracting common-mode interference from these elements at the input of the electronic unit.

The features of this device, matching the features of the proposed utility model:

1. The presence of two means of detection, based on different physical principles of action.

2. The security zone is divided into separate sections.

The disadvantages of this prototype device are:

1. The placement of detection means at different security lines will require laying in the exclusion zone between the ends of the transverse cable lines, which will lead to an increase in the total length of cable lines, and accordingly the energy consumption of the detection tools. The laying of transverse cable lines in the exclusion zone is carried out under the surface of the control and trace strip. To maintain the control and track strip in the exclusion zone between the lines in working condition, it is necessary to regularly conduct profiling of its surface using special equipment. When conducting profiling of the control and trace strip, the possibility of damage to the transverse cable lines laid under its surface is not ruled out, which reduces the reliability of detection tools.

2. The presence of two barriers located in parallel at a certain distance from each other, which significantly increases the cost of their manufacture, construction and installation work.

The objective of the utility model is to create a combined detection tool, which would eliminate the above disadvantages.

The technical result obtained by the implementation of the utility model is to reduce energy consumption, reduce weight and size characteristics and increase the reliability of the combined detection means.

The problem is solved due to the fact that in the combined detection means containing capacitive detection means and vibration detection means, the following difference is provided - the detection means included therein and their cable networks are structurally located on one barrier, and the capacitive detection means is located above the vibration detection means.

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

1. In the proposed combined detection tool, the detection tools included in it and their cable networks are located on one fence. This arrangement eliminates the transverse cable lines, which are unavoidable when placing the detection means at different boundaries, since the power supply and communication cables must be connected to the detection means equipment at each section of the guard. With a large number of sections near extended security lines, the exclusion of transverse cable lines can significantly reduce the total length of cable lines, and accordingly reduce the energy consumption of the combined detection means.

2. Cable networks are located on the fence above the ground, along the border of the guard, which eliminates the possibility of damage during the profiling of the control and trace strip and, accordingly, increases the reliability of the combined detection means.

The utility model allows you to:

1. To reduce the power consumption of the combined detection means by reducing the length of cable networks.

2. Improve the reliability of the combined detection tool.

3. To reduce the cost of equipment and the cost of construction and installation works.

The technical essence and principle of operation of the proposed device are illustrated by drawings, which depict:

Figure 1 - Section of a two-sided protection section based on capacitive and vibration detection means.

Figure 2 - Cross section of the protection site of the proposed combined detection means.

Figure 3 - External view of the protection site of the proposed combined detection means.

Figure 1 shows the following notation:

1 - insulator capacitive detection means;

2 - rack capacitive detection means;

3 - a sensitive element of capacitive detection means;

4 - a conductor of zero potential capacitive detection means;

5 - reinforced concrete fence;

6 - control - trace strip;

7 - cable sensing element of vibration detection means;

8 - rack vibration detection means;

9 - canvas alarm bar vibration detection means;

Figure 2 shows the following notation:

1 - insulator capacitive detection means;

2 - rack capacitive detection means;

3 - a sensitive element of capacitive detection means;

4 - a conductor of zero potential capacitive detection means;

6 - control - trace strip;

7 - cable sensing element of vibration detection means;

8 - rack vibration detection means;

9 - canvas alarm bar vibration detection means;

10 - connecting cable of an electronic unit with a sensitive element of vibration detection means;

11 - connecting cable of the electronic unit with the antenna sheet of the capacitive detection means;

12 - connecting cable of the electronic unit with the zero potential conductor of capacitive detection means;

13 - brackets for fastening power and low-current boxes;

14 - power box;

15 - low-current box;

16 - trunk communication cable of the peripheral controller with a system for collecting and processing information;

17 - a precinct cabinet;

18 - peripheral controller;

19 is a communication cable of an electronic unit of a capacitive detection means with a peripheral controller;

20 - cable remote power combined detection means;

21 is an electronic unit capacitive detection means;

22 - communication cable of the electronic unit of the vibration detection means with a peripheral controller;

23 - electronic block vibration detection means;

24 - rack cabinet precinct.

Figure 3 shows the following notation:

1 - insulator capacitive detection means;

2 - rack capacitive detection means;

3 - a sensitive element of capacitive detection means;

4 - a conductor of zero potential capacitive detection means;

7 - cable sensing element of vibration detection means;

8 - rack vibration detection means;

9 - canvas signaling bar vibration detection means.

The proposed combined detection tool consists of:

- capacitive detection means;

- vibration detection means;

- a precinct cabinet;

- cable networks of power supply and communication.

The above structural elements are made as follows:

1. Capacitive detection means consists of an electronic unit 21 and a sensing element 3.

Structurally, the electronic unit 21 is made on the basis of a unified metal case in the form of a removable unit with a bracket, with which it is mounted on a perforated rail inside the precinct cabinet 17 to protect it from atmospheric influences and mechanical damage. Inside the case of the electronic unit 21 are located: a measuring bridge transformer, amplifiers, a sensitivity regulator, synchronous reactive and active channel detectors, filters, an adder, a threshold device, an output driver, and an output device.

The sensing element 3 consists of a welded, galvanized lattice cloth, mounted on insulators 1 with nuts. The lattice web 3 is made of individual panels with a width of 2450 mm and a height of 850 mm. Panel cell size - (50 × 200) mm. Bar diameter 6 mm.

At the edges of the panels, plates with holes for welding to insulators are welded 1. A zinc coating is applied to the plates to ensure electrical contact between the panels. Insulators 1 are attached to the metal posts 2 of the channel with nuts. The racks 2 are fastened to the racks 8 of the vibration detection means by means of drill bits (self-tapping screws).

The sensing element 3 is mounted in the form of separate sections up to 250 m long, electrically isolated from each other. Each section is divided in the center into two flanks, electrically isolated from each other.

The connection of the electronic unit 21 to the sensing element 3 is carried out using a connecting cable 11, to the zero potential conductor - using a connecting cable 12, to the peripheral controller 18 - using a communication cable 19.

2. The vibration detection means consists of an electronic unit 23 and an alarm fence.

Structurally, the electronic unit 23 is made on the basis of a unified metal case in the form of a removable unit with a bracket, with which it is mounted on a perforated rail inside the precinct cabinet 17 for protection against atmospheric influences and mechanical damage. Inside the body of the electronic unit 23 are located: a charge-sensitive amplifier, filters, a processor and an actuator based on a solid-state relay.

The signal fence is a special engineering structure and is a single-row lattice fence made of web 9, mounted on metal posts 8 of rectangular pipes installed in the ground at a distance of 2.5 meters from each other, equipped with cable sensing elements 7.

The canvas 9 of the alarm fence consists of separate welded, trellised panels 2450 mm wide and 1800 mm high. Cell size

panels - (50 × 200) mm. Bar diameter 6 mm.

The sensing element 7 consists of two triboelectric cables. The use of two cables allows to increase noise immunity by subtracting common-mode interference at the input of the electronic unit 23. The sensitive element 7 is attached to the canvas of the signal boom 9 by means of light-resistant plastic ties. The connection of the electronic unit 23 to the sensing element 7 is carried out using connecting cables 10, to the peripheral controller 18 - using a communication cable 19.

3. The precinct cabinet 17 is a metal cabinet with a door, inside of which horizontally perforated rails are mounted for fastening the peripheral controller 18 and electronic units 21 and 23.

On the side walls of the cabinet precinct 17 ventilation shutters are provided. A protective visor is installed above it to prevent the cabinet from heating up from solar radiation. In the lower part of the precinct cabinet 17 there are two openings for cable entry. To make internal and external connections in the cabinet precinct 17 installed terminal blocks.

The precinct cabinet 17 is bolted to a stand 24 installed in the ground.

4. Cable power and communication networks are located in galvanized metal boxes 14 and 15. The main communication cable 16 of the peripheral controller 18 with the information collection and processing system is located in the low-current box 15. The remote power cable 20 of the combined detection means is located in the power box 14. Box 14 and 15 are equipped with temperature compensators for

compensation of temperature effects of the environment. Boxes 14 and 15 are installed on the brackets 13. The brackets 13 are fastened to the racks 8 of the vibration detection means by means of drill bits (self-tapping screws).

The combination detection tool described above is used as follows:

Prepare a combined detection tool for operation. Carry out an external inspection of the equipment for the correctness and reliability of connecting electrical circuits when the power is off. The power of the combined detection means is turned on and the health of its equipment is monitored. To test the operability of the combined detection means, control actions are performed by touching the sensitive element of the capacitive detection means with your hands, as well as shorting the sensitive element to the ground in any three areas of the protection zone, simulating the damaging effects on the canvas of the vibration detection means.

Use a combined detection tool as follows:

The combined detection means is connected to a system for collecting and processing information and organizes round-the-clock duty of shift operators at the control panel of the system. The functioning of the combined detection means is based on the formation of detection zones by each means, upon exposure to which by an intruder or a group of intruders, an operation signal is issued to the information collection and processing system.

Capacitive detection means creates a detection zone on the sensitive element 3. When you try to overcome the obstacle on one of the flanks by climbing over its top, with the touch sensitive

element 3 with his hands (including gloves or mittens), as well as with the closure of the sensitive element 3 to the ground, its electric capacity relative to the ground changes. A change in the electric capacitance leads to an imbalance of the measuring bridge transformer and when the set threshold is exceeded, the electronic unit 21 generates a response signal to the information collection and processing system.

Vibration detection means creates a detection zone on the web 9 of the security fence.

When the web 9 is deformed or destroyed by the intruder, the web 9 deformation and vibration are transmitted to the cable sensitive element 7 of the vibration detection means. The deformation and vibration of the cable sensing element 7 cause the appearance of electrical signals (due to the triboelectric effect) at its output. The electrical signals coming from the cable sensing element 7 through the connecting cable 10 to the electronic unit 23 are amplified, filtered and processed by the electronic unit 23 so as to distinguish, in accordance with the distinctive features, the signals initiated by the action of the intruder on the web 9 of the security fence. The electronic unit 23 provides a response signal through the communication cable 22 to the peripheral controller 18, in the form of opening normally closed relay contacts. The response signal of the vibration detection means from the peripheral controller 18 is supplied via the trunk cable 16 to the information collection and processing system.

Claims (1)

Combined detection means comprising a capacitive detection means and vibration detection means, characterized in that the detection means included therein and their cable networks are structurally arranged on one barrier, the capacitive detection means located above the vibration detection means.