RU22392U1 - OPTICAL SIGNALING INFORMATION DEVICE - Google Patents

Description

OPTICAL SIGNALING INFORMATION DEVICE

The utility model relates to closed area monitoring devices that generate an alarm when a penetration into a specified area is detected.

A wide variety of alarm systems are known that are triggered when an intruder crosses the optical beam generated by the emitter unit and received by the photodetector unit of the system.

One of such devices is given in the patent of Germany N3316010, MKI: G08B 13/18, E05G 5/00 (published in ISM N1 for 1985). A method of controlling an enclosed space. The device comprises an infrared transmitter and a signal receiver from it. The receiver generates an alarm in case of deviation of the incoming, its infrared radiation on it from a given value.

Such devices have low noise immunity, as they are triggered by any accidental violation of the protection zone, for example, a fallen leaf or a flying bird.

More reliable devices contain several optical beam sources and, accordingly, several photodetectors, for example, photoelectric detectors of the DS470 type from Detection Sistems, Inc. (copy attached). The figure in the prospectus shows that the device forms 4 optical beams. In this case, an alarm is generated when either all four rays or two upper or two lower beams intersect simultaneously. Such a scheme is more protected from accidental alarm output, therefore, it has increased noise immunity1.

MKI: G08B, 13/00

N 620550, MKI: G08B 13/18 (publ. ISM, issue 119, N10 for 1989), which contains two transceiver units, each has a photodetector (BF) unit that is optically coupled to one or more light sources. The light sources of both transceiver units are connected through a pulse distributor to a master oscillator. The BF of each transceiver block is connected to the alarm block through a common control unit and a signal blocking unit.

The level of received BF signals is compared in the control unit, which activates the security alarm unit in case of inequality of signals from light sources.

The disadvantage of the analogs listed above is also manifested in the low information content received from the photodetector unit, which limits the on-line analysis of the information received at the security zone and can lead to inadequate actions by the maintenance personnel.

The closest solution to the proposed one can be considered security devices by Detection Systems Inc., USA, model DS 4S2,424,4S6 (a copy of the brochure is attached). The device comprises a signal emitter unit and a signal receiver unit. The emitter emits two synchronous photobrays at the same time. The rays are located vertically one above the other at a distance of 50mm to 250mm from each other. An alarm message is generated when both beams intersect at the same time.

The objective of the proposed solution is to increase the information content of the signal received from the photodetector unit, which will provide more clear and specific information about the intruder and the place of violation of the protected area.

The proposed device is illustrated by the circuit in FIG. 1.

The informative optical signaling device contains two emitters 1 and 2 mounted in the emitter unit, which emit optical signals located horizontally, in pairs. 11 l. One but the other, but with different frequencies.

There are two amplifiers 3 and 4 in the optical signal receiver unit. Amplifier 3 receives a signal from emitter 1 (beam 1.1), and amplifier 11b 4 receives a signal from emitter 2 (beam 2.1). Due to the fact that each signal during the passage of distance from the emitter unit to the receiver unit is scattered, the diameter of the beam expands, in cut. Some of the signal from the emitter 1 (beam 1.2) goes to amplifier 4, respectively, beam 2.2 gets to gain.11 3.

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from the outputs of amplifiers 3 and 4, the signals go to the inputs of the blocks of the analyzing system, which includes:

block 5 - control the presence of a signal,

block 6 - determining the sequence of signal overlap,

block 7 - determining the time of intersection of the rays by the intruder.

From the output of block 5, the signal is supplied to the alarm block 8, and the signals from the outputs of blocks 6 and 7 are fed to the analyzing block 9.

The device operates as follows.

When all the rays are blocked, the signal from the output of block 5 is fed to the input of the alarm block, which includes an alarm.

When the intruder crosses the beams 1.1, 2.2 (or 2.1, 1.2), the corresponding signal enters the input of block 6, and its output goes to block 9, which in these cases detects violation of the boundary of the protected object in zone A. Violation in zone B is determined by sequential crossing rays 1.1, 2.2, 1.2 (or 2.1, 1.2 and 2.2), and a violation in zone C - when crossing rays 1.1 and 1.2 (or 2.1 and 2.2).

Block 7 fixes the moments of time of intersection of rays 1.1 and 2.1 and the moments of time of restoration of these rays. Based on the data obtained, the total overlap time of each of these rays and the difference between the overlap (appearance) of beam 1.1 and 2.1 are determined. The received data is transmitted to the analysis unit 1 9.

Analysis of the information received in block 9 allows us to draw the following conclusions:

- at the point where the extraneous object crosses the radiation barrier,

- about the direction of crossing the radiation barrier,

- about the speed of crossing the barrier,

- about the size of an extraneous object.

Such information will allow for a deeper analysis of violations, take measures to improve the system, and will also allow for more rapid identification of the violator.

Thus, the proposed improvements to the device circuitry made it possible to expand its functional capabilities, as well as to increase the efficiency of its wired functions.

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Claims (1)

An informative optical signaling device, comprising an emitter unit with two radiation sources and a receiver unit with two amplifiers, a received signal control unit and an alarm unit, characterized in that the emitter unit is capable of emitting two signals of different frequencies parallel to each other in a horizontal plane , the receiver unit is supplemented with a block for determining the overlap of rays, a block for determining the time of intersection of rays and a data analysis unit, each the amplifier of the receiver unit is configured to receive both signals of the emitter unit, the outputs of the amplifier units are connected to the inputs of the received signal control unit, the beam overlap determination unit and the beam intersection time determination unit, the outputs of the last two blocks are connected to the inputs of the data analysis unit.