RU164841U1 - VIBRATION DETECTION SYSTEM WITH HIDDEN INSTALLATION OF SENSITIVE ELEMENT - Google Patents

Abstract

A vibration detection device, made in the form of a section of the barrier connected to the support and containing a sensing element mounted inside the barrier support, characterized in that the sensitive element is mounted inside the barrier support on at least one magnet, a plastic decorative cover is installed on the barrier support, the sensitive element is configured to wirelessly transmit data in the form of a small-sized unit, fixing the vibration of the boom section.

Description

Vibration detection device with hidden sensor installation

The utility model relates to engineering barriers equipped with perimeter vibration detection means, and is intended for use as part of complexes of technical means of perimeter protection of industrial, military, environmentally hazardous and other objects.

Known utility model "VIBRATION DETECTION DEVICE" DOLPHIN-M ". Vibration detection device "Dolphin-M" contains a mesh alarm fence, a cable sensitive element and a device (unit) for collecting and processing information. Mesh alarm fence is a single-row mesh fence on metal racks installed in the ground at a distance of 3-4 meters from each other, with a cable sensing element mounted on a mesh cloth. The mesh security fence has a height of 2.3 meters from ground level, and is deployed with a length of up to 250 meters. Bearing racks are installed along the edges of the signal fence, equipped with cable ties, adjustable in length. To exclude the possibility of landing on the signal boom of large birds at the mesh of the detection tool, the longitudinal thread is cut off and vertical pins 50 mm high are formed from the transverse threads of the mesh fabric. (RF patent No. 59677, IPC E04H 17/14, G08B 13/00, publ. 12/27/2006).

The known design has several disadvantages:

- the sensitive element (SE) is attached to the mesh web of the fence, which leads to unmasking the presence of protection;

- the sensitive element is made in the form of a triboelectric cable, which requires a special, flexible at the top, construction of the fence, the installation of the CE in the form of a loop on the mesh web of the fence and, as a result, considerable time and financial costs for its installation;

- the sensitive element (SE) is made on the basis of a cable extended along the length of the cable, which does not allow localizing the intruder's invasion zone less than the length of the SE, i.e. if the length of the SE is 250 m, then the detection accuracy is not less than 250 m.

Known sensor registration overcoming obstacles. The sensor refers to vibrating means of perimeter protection. The sensor for overcoming obstacles contains a processing unit attached to the fence and from 1 to 4 cable sensitive elements connected to it, and the sensitive elements are made on the basis of a triboelectric small-sized coaxial cable having a double screen and a central conductor separated from each other by moving layers of dielectrics forming charges during cable deformation. A resistor and a capacitor are located at the opposite end of the cable of the sensing elements from the processing unit, closing the center conductor and the inner screen of the cable of the sensing element. The external screens of the sensitive elements are connected to the metal case of the processing unit, and its case is grounded. (RF patent No. 123197, IPC G08B 13/00, publ. 20.12.2012.).

The known design has several disadvantages:

- the sensitive element is made in the form of a cable, which requires significant time and financial costs for its installation on the fence;

- the sensitive element and the processing unit are installed from the outside of the fence, which leads to unmasking the presence of protection;

- the sensitive element is based on a cable extended along the length of the cable, which does not allow localizing the intruder’s intrusion zone less than the length of the sensitive element.

A perimeter security system is known, consisting of a barrier on which accelerating RFID detectors of at least one monitoring center and a control center are installed. (European patent No. 2423892, IPC G08B 13/12, publ. March 28, 2012)

A disadvantage of the known design is that the sensitive element and the processing unit are installed from the outside of the fence, which leads to unmasking the security system.

A signaling device is known, the sections of which are mechanically connected to strain gauges placed in support columns. (B. Vvedensky, “Protection of the perimeter of the cottage - technologies and solutions, journal“ Security Algorithm ”, No. 4, 2009).

Strain gauge (strain gauge) - a sensor that converts the strain to a convenient signal for measurement (https://ru.wikipedia.org). The disadvantage of the system is that the security system responds to signals about the deformation of the sections of the fence and does not solve the problem of secretly registering the vibration of the structure of the fence in case of unauthorized overcoming the security system. In addition, the known source does not indicate the method of mounting the sensor. As a rule, in such systems, strain gauge sensors are mounted by spot welding or screwed, which greatly complicates the assembly of the device and indicates the presence of the sensor on the support.

The closest technical solution in terms of technical nature and the technical result achieved to the claimed utility model is a vibration detection device made in the form of a section of the barrier connected to the support and containing a sensing element mounted inside the fence support. The sensitive element is a PDS type sensor, the principle of which is based on the use of the piezoelectric effect. It perceives the vibration of the fence and converts mechanical vibrations into electrical signals. The sensor has two cable outlets with which it is connected to a two-wire cable line. In one embodiment of the device, the sensor is inserted into the internal cavity of the support column using springs that secure the sensor inside the rack.

(http://peridect-perimeter.ru/files/documents/Peridect_Man_Ru_2010_12_07.pdf)

A disadvantage of the known device is the inability to provide a sufficiently covert operation of the device, since the sensors have cable leads for connecting to a cable line connecting the sensor to external equipment installed on the guarded perimeter, which leads to unmasking the security system.

The technical problem, which the proposed utility model is aimed at, is to increase the secrecy of the security work by completely masking the locations of sensitive elements that record the fact of overcoming the obstacle.

The stated technical problem is solved in that in the vibration detection device, made in the form of a section of the barrier connected to the support and containing a sensing element installed inside the obstacle support, according to the claimed utility model, the sensitive element is fixed inside the obstacle support on at least one magnet , a decorative cover made of plastic is mounted on the fence support, the sensitive element is made in the form of a small-sized unit, fixing the vibration of the fence section Nia, with the possibility of wireless data transfer.

The technical result, the achievement of which is achieved by the implementation of the entire claimed combination of features, consists in increasing the secrecy of the operation of the vibration detection device during wireless data transmission by performing a sensing element detecting vibration of the structure during unauthorized overcoming of the obstacle, with the possibility of wireless data transmission, fixing it inside the supports on magnets and the presence of a decorative cover on the support, which provides absolute masking of sensitive lement.

The essence of the claimed utility model is illustrated by drawings, where:

- in FIG. 1 shows a fence assembled from sections of a fence with supports containing sensing elements of a vibration detection device;

- in FIG. 2 shows an example of perimeter security using the inventive vibration detection device;

- in FIG. 3 shows a fragment of a support of a guard section containing a sensing element fixed inside a guard of a fence.

The figures in FIG. 1-3 include the following items:

1 - section of the fence;

2 - the support of the fence;

3 - decorative cover of the fence support;

4 - sensitive element (pos. 4.1, 4.2, ... 4.n respectively in Fig. 3)

5 - data acquisition and processing unit (BSOD), performing the function of a monitoring center and a control center of a vibration detection device

6 - antenna of the sensing element

7 - clip

8 - magnets

9 - support wall

The vibration detection device comprises a fence section 1 with a support 2. The support 2 is a square metal pipe (80 × 82 mm in cross section), closed with a decorative cover 3 on top, which can be made of plastic. In the support 2 of the fence is installed a sensing element 4, made in the form of a small unit, fixing the vibration of the structure of the fence. Information processing from the proposed detection device is carried out by at least one unit 5 for collecting and processing data, connected by standard means of connection (communication) with vibration sensitive elements 4.

Each sensing element 4 (Fig. 3) is made in the form of a small-sized unit, fixing the vibration of the barrier structure, and is installed inside the support 2 of the barrier. The sensitive element is configured to transmit data wirelessly. The support is closed by a decorative cover 3. The sensor 4 is fastened inside the support by two magnets 8, which securely fix the sensor on the inner wall 9 of the support and an additional clip 7, which fixes the position of the antenna of the sensor relative to the upper edge of the support (Fig. 3). Mounting on magnets ensures secrecy of placement, since when using magnets on the support there are no visible signs of mounting.

The design of the housing of the sensing element is designed in such a way that it does not require any additional fasteners and tools during its installation inside the fence support. Since the housing of the sensing element is located inside the support of the barrier section with magnets, it is possible to mask 100% of the security device itself.

When organizing the perimeter security using the inventive vibration detection device (Fig. 2), the accuracy of the localization of the intruder by the sensor processing unit is determined by the step of placement of sensitive elements in the supports of the barrier structure. Vibration sensitive elements (VChE) 4 are fixed inside the supports on magnets 8 and placed in increments not exceeding the diameter of the circular pattern of the emitter of each sensitive element.

For example, when placing a vibrating sensitive element inside the support of every fifth section of the barrier with a step of installing the supports equal to 3 m, the accuracy of the localization of the intruder will be no more than 12 m when the signal processing unit BSOD from two adjacent sensitive elements is combined.

A vibration security system organized using the inventive vibration detection device can include up to 256 VCHEs that form local detection zones in the radius of the circular pattern of the emitter of each sensitive element, creating a continuous border of protection in total.

Each VChE is installed inside the support of the fence and can control a zone of up to 100 m, which makes it possible to completely mask the principle of operation of the vibration detection device as a whole.

Information from the VCHE is transmitted to the data collection and processing unit (Fig. 2), which forms the basis of the workplace of the security operator and is the lowest level of the security device as a whole. From the data collection and processing unit, information about the intruder can be sent via wired, wireless GSM or Internet communication lines to the upper levels of the object’s security system. Wireless connection of VChE with the data processing unit eliminates the need for laying cable lines and seems to be a more progressive solution to the technical problem.

In addition to the main technical task indicated above, the proposed device additionally solves the problem of reducing the complexity of mounting the sensitive element on the design of the blocked fence, and helps to increase the accuracy of determining the place where the intruder overcomes the barrier to the size of the perimeter installation step of the sensitive elements.

The utility model can be manufactured in mass production using modern means of production.

Claims (1)

A vibration detection device, made in the form of a section of the barrier connected to the support and containing a sensing element mounted inside the barrier support, characterized in that the sensitive element is mounted inside the barrier support on at least one magnet, a plastic decorative cover is installed on the barrier support, the sensitive element is configured to wirelessly transmit data in the form of a small-sized unit, fixing the vibration of the boom section.

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