RU55182U1 - SEISMIC SECURITY SYSTEM - Google Patents

Abstract

The utility model relates to security equipment and can be used to protect open areas from unauthorized access by people. The seismic security system includes seismic sensors 1, buried in the ground and detecting vibrations of the soil surface when moving intruders along it, and a computer information system. As seismic sensors, piezoelectric sensors are used, which are connected via information transmission channels to an information collection unit 2, which will include an input interface 5 connected to seismic sensors, a microcontroller 6, a buffer memory 7, a power supply 8 and an output interface 9 connected to the processor unit / computer 10, which is connected to the indicating device 4 by transmitting information. As a channel for transmitting information using a two-wire line for transmitting an analog signal from a sensor to a data collection unit, a digital channel or a radio channel

Seismic sensors 1 are installed in the ground to a depth of 20-30 cm. Along the guarded perimeter at a distance of 2-3 m from them. The sensors, through an information channel, are connected to the information collection unit 2 and the “central guard post” on which the processor unit / computer is located for information processing and indication device 4 status of the guarded perimeter.

The system allows you to reliably process the information received from the sensors and accurately characterize the detection object.

The ability to connect additional sensors increases the range without complicating the system.

Description

The utility model relates to security equipment and can be used to protect open areas from unauthorized access by people.

Various systems are known for detecting the penetration of moving objects into a forbidden territory with fixing the fact of crossing the contour of this territory

Known seismic information and security system containing a computer information and computer complex, seismic sensors and signal processing units, interconnected by cable lines. The linear part of the system is made of two spaced seismic sensor lines, forming three control zones. The sensors of the system are buried in the ground and register vibrations of the soil surface when intruders move along it, while the signals from the sensors are processed and transmitted according to the developed mathematical algorithm to a computer, where they are compared with the intruders' algorithms laid down in it. On the computer display, in real time, the virtual zone of the guard strip section with the detected intruders is displayed. (RF Application No. 2004104440, published July 27, 2005)

The closest analogue to the claimed utility model is a device for detecting human penetration through the band gap. (RF patent No. 22272799, published December 20, 2004). The device is a system for detecting human penetration through the forbidden zone loop, containing seismic receivers located along the loop, which include seismic sensors in the form of, for example, geophones with primary sensitivity to the vertical component of the seismic field, preliminary differential and paraphase amplifiers connected by an extended cable to the equipment observation post. The latter contains a receiving information module with a second differential amplifier, a digital processing system and a power source.

The objective of the utility model is to increase noise immunity and increase the radius of the system, as well as simplifying the structure of the system.

The technical result of the claimed utility model is the high-quality processing of information received from the sensors of the system, which allows you to accurately and quickly characterize the detection object.

The ability to connect additional sensors will increase the range without complicating the system.

The problem is solved as follows.

The seismic security system includes seismic sensors buried in the ground and detecting vibrations of the soil surface when intruders move along it and a computer information system. As seismic sensors, piezoelectric sensors are used, which are connected via information transmission channels to an information collection unit, which will include an input interface connected to seismic sensors, a microcontroller, a buffer memory, a power supply and an output interface connected to the processor unit, which is connected to the display unit by information transfer.

Seismic sensors, which are based on the piezoelectric effect - alternating compression of the opposite surfaces of quartz causes an electrical signal on these surfaces. A seismic sensor is a structure inside which an inertial mass is attached to spring dampers with which a piezocrystal is in contact, which, on the opposite surface, is in contact with the body of the seismic sensor. External vibrations / seismic vibrations have a mechanical effect on the piezoelectric element, an electric signal appears in it, which is amplified by a built-in amplifier and fed through a communication channel to the computer.

These sensors are commercially available (Sensors of the company "Geoacoustics" Zelenograd (Moscow) Brand A1326.

The information transmission channel may be a two-wire analog signal transmission line from the sensor to the information collection unit. A more complex channel is a digital one, in which data collection is organized according to some protocol, according to which information is sequentially dumped to a computer via a common channel.

Another channel option is a radio channel.

The information collection unit is a switching unit providing a mechanical arrangement of wired lines from sensors into a single cable connected to a computer. The information collection unit will include an input interface connected to the sensor, a microcontroller, a buffer memory, a power supply and an output interface connected to the processor unit / computer, the information from which is transmitted to the indicating device.

Indication device - in the simplest case - signal lamp / siren, which lights up / turns on in case of violation of the guarded line / perimeter. In another case, it may be a monitor screen on which the protected perimeter is displayed and

in case of its violation, the screen shows the exact location of the violation and the type of violator - a person, a dog / other. animal, car, etc ..

Figure 1 schematically shows a seismic security system, where 1 is seismic sensors, 2 is an information collection unit, which is connected to sensors by channels 3 for transmitting information from sensors 1 to information collection unit 2, processor unit 3, display device 4,

The input of each sensor is connected to the input interface 5 of the information collection unit. The information collection unit will include an input interface 5 connected to the sensor 1, a microcontroller 6, a buffer memory 7, a power supply 8 and an output interface 9 connected to the processor unit / computer 10, the information from which is transmitted to the indicating device 4.

The principle of operation of a seismic security system is as follows.

Seismic sensors 1 are installed in the ground to a depth of 20-30 cm. Along the guarded perimeter at a distance of 2-3 m from them. The sensors, through an information channel, are connected to the information collection unit 2 and the “central guard post” on which the processor unit / computer is located for information processing and indication device 4 status of the guarded perimeter.

In standby mode, all the blocks / devices of the security system are turned on, information is being constantly taken from sensors and this information is being processed.

At the intersection / approach by the intruder of the protected line, oscillations are created in the soil, which are captured by seismic sensors and converted into electrical signals. Electrical signals are transmitted through the communication channel to the data collection unit and to the computer / processor unit and processed according to a predetermined algorithm, after which the signal is transmitted to the indicating device. As a result of processing, an alarm is generated in accordance with which certain measures are taken to counter the intruder.

Security system specifications:

- the sensitivity zone of seismic sensors is 5-8 meters (depends on the type of sensor and the soil in which the sensor is installed);

- type of information transmission channel - cable / radio channel;

- the length of the guarded perimeter / line - at the request of the customer (the required length is achieved by modular construction of the system)

- system power - 27 V (industrial, mains / battery)

The developed system allows not only effectively moving away from seismic interference, but also identifying objects that appear in the protected area.

Such objects may include the following, a dog, a horse, a cyclist, a skier, etc.

Modernization of the developed system will allow the construction of an intelligent seismic security system to identify more complex situations;

- approach / departure to the protected line;

- passage along the guarded line;

- digging, moving through a fence, etc.

Claims (2)

1. A seismic security system, including seismic sensors buried in the ground and detecting vibrations of the soil surface when intruders move along it, and a computer information system, characterized in that piezosensors are used as seismic sensors, which are connected via information transmission channels to the information collection unit which will include an input interface connected to seismic sensors, a microcontroller, a buffer memory, a power supply and an output interface connected to a process polar block which is connected with a display device via a data transmission. 2. The seismic security system according to claim 1, characterized in that a two-wire analog signal transmission line from the sensor to the information collection unit, a digital channel or a radio channel is used as an information transmission channel.