JPS5856092A - Invasion alarm - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an intrusion prevention device, and more particularly to an intrusion prevention device having a long perimeter for intrusion prevention.

In power plants, substations, airports, oil storage bases such as LNG, storage sites for explosives and fuel, chemical factories, etc., or important facilities that pose a danger, generally the outer periphery of the site is Protective fences such as wire mesh or concrete walls
It is surrounded by TS walls to prevent foreigners or intruders from entering through these boundaries without permission.

However, there are people who intentionally or negligently (accordingly, climb over or break through these fences and walls), so the protective fence is equipped with an appropriate intrusion detection sensor on the casting wall, and the sensor is used to detect the intrusion of intruders. It is necessary to detect the intruder and automatically notify the manager working in the control room and take appropriate measures such as warning against the intruder as necessary. Many devices are used that are configured to use an intrusion detection sensor to convert the physical quantity of an object passing through a boundary into an output signal as simple as possible, and to supply this output signal to a receiver. As a detection sensor in the device, a pressure-sensitive sensor constructed by at least two parallel conductors with different potentials and these two conductors covered with, for example, pressure-sensitive conductive rubber or anisotropic conductive rubber was used. With such pressure-sensitive sensors, if an intruder inadvertently presses or cuts the boundary (by stepping on the installed sensor, etc.), a short circuit or open state will occur between the three conductors. Due to this, CmCm resistance change occurs. This change in resistance is taken out as an output signal, and intrusion can be detected by capturing it as a change in DC voltage at the receiver.

FIG. 1 shows an example of this typical intrusion prevention device, and 10 is a fence attached to the foundation 9 and installed along the boundary line for intrusion prevention. The load sensing sensor installed in this fence 10 has two parallel sensing lines 2 and 2B with a glossy length on the boundary line, and a sensor 112 covering the parallel parts of these sensing lines 112 and 2B, for example. It is composed of a covering material 4 made of piezoconductive rubber, etc., and K. In the front, at the 7th enclosure 10, a fence destruction detection center t8 is arranged along the wire mesh. A circuit diagram of the load sensing sensor described above is shown in FIG. 2, and the load sensing sensor consists of sensing 112A, 2B, a resistor 3-jlII connecting these two sensing wires 2 and 1 and t at the terminal end, and a covering material 4. Senna is indicated by 1.

i is a receiver that detects the presence or absence of an intruder; resistors 6A and 6 constitute a bridge circuit 6V between load sensing sensors 1 and 0;
B, 60 and a power source, and the ends of the detection sensor 2 and 2 are connected to the terminals of the bridge circuit #&6, and if there is an intruder, a short circuit or disconnection will occur in the load sensing sensor 91. Therefore, the senryo of the bridge circuit 6 collapses, and the DC voltage taken out from the bridge circuit 6 changes, and this voltage carbonization is detected by the receiver SK to detect an intrusion accident.

Incidentally, the destruction of the fence is detected based on the same principle as the destruction detection sensor 84h.

However, with the intrusion warning device configured in this way, for example, when it is installed in a facility where the boundary line extends over 1- or more lines, it is possible to detect an intrusion accident, but it is not possible to accurately determine the location where the intrusion occurred. Can not do it.

Therefore, sensor 1, for example, meat Il! Or the length of the range that can be monitored by a television camera etc. is as shown in FIG.
, a sensor section 16 consisting of a destruction detection sensor 15, a load sensing sensor, and a senna consisting of a destruction detection sensor 15 are sequentially arranged in the longitudinal direction along the boundary 11IK, and the respective detection sensors 111 and 12, 14A and 15 Man,
There is an intrusion warning device in which N,mu and N,mu are connected to a receiver sO in parallel.

In addition, B-* -B@a---RM-R,n, II
B-n* is a resistor, and 17 is a common one. FIG. 4 is an equivalent circuit diagram of the device shown in FIG.
B, Nil, destruction detection Seno 12, 15. 8 is shown by a normally closed switch B11.15B and 1. If the device is configured as shown in Figures 3 and 4, it is a receiver! In 10, it is possible to detect whether an intrusion accident has occurred and whether it is a friend at any of the sensor parts 13°, 16...N, etc., so it is possible to detect whether an intrusion accident has occurred or not. You can check the intruder at Sakaino 5.
The receiver 50 becomes larger in proportion to the length of the wire, and the construction cost increases as each sensor section 13, 16... and the receiver SO are connected individually to form a channel. An object of the present invention is to provide an intrusion warning device that eliminates the above-mentioned drawbacks, miniaturizes the receiver, has a low construction cost, and can identify the location where an intrusion occurs. Changes in physical quantities induced by intruders at the boundary line guarded against intrusion...Ilt
A test result 8, the test, - a test result, the amount of food.

[In an intrusion prevention device having a receiver that detects an intruder using a fluctuating intruder detection signal, when a plurality of detection units corresponding to each of the boundary lines divided into a plurality of compartments are connected in series, and 4, the intruder detection signal when any one of the detection units detects a change in the physical quantity is made different depending on each of the detection units, so that any of the detection units detects the intruder. There are nine 51CLs that can determine whether it has been detected.

The present invention will be described in detail below based on the %-plane.

The figure S shows one embodiment of the present invention, in which each sensor part f
b -at” am respectively represent a horsefly and a horse as shown in Figure 1.
As a load sensing sensor [detects if it is covered with coating material 4*1
02A OJ: Hi1G2B, 202A Oyohi202
1-...m02A and m0211 and resistors 103 and 104JO3 and 204.-nO3 and nO4, and a destruction detection wire 105.20 as a destruction detection sensor.
5...nOs.

Each of these senna parts 8** am"" am is connected in series to 5 and 111 as shown in this figure, and one end is connected to the end of the sensing wire 102 of the senna part S and the sensing wire IQ2B. The receiver 50 detects only the other end of the Iios.
It is a round shape designed to lead to 0 K.

The aforementioned resistance is 1G! and 104, 203 and 204
-... By burying n03 and m04 inside the covering material 40, as shown in FIG. (see Figure 6), C
In B) the coating is again shown at 4, the sensing IIIH film is placed on the upper electrode 41 and the lower electrode 4! Detection II 1
The large resistors 103 and 104 connected through 021 are molded with resin and integrally installed in the covering material 4. Fig. 7 is a circuit diagram equivalent to the circuit diagram shown in Fig. 5. , load sensing sensor normally open switch 8Wst I BNru "" 8Wll in sensor S1m & -k,
Destruction detection sensor is normally closed switch Bmachi* Bvu -S
wn, and the resistors 103 and 104, 208 and 204 . Otori 01 and n02 are connected to resistor II4* and &
, , R, and -e R''S and R111.

In the figure, if there is an abnormal intrusion in the sensor 81 area, the switch 8W11 will be opened and the +S switch 8W will be opened. If there is an abnormal intrusion in these four areas, the switch S town will be opened. When the switch is closed, the combined resistance changes from - to negative, and when switch 8 is opened, the combined resistance is from the bird (Bird * + Rlt) K
Change. In this way, Senna too.

& ・” Since the value of the combined resistance changes depending on the operation of am, if the receiver sOO is configured in the same way as shown in Figure 2, the point of intrusion can be determined by the indicated value of the voltage needle of the bridge circuit. can be determined.

FIG. 8 shows another embodiment of the present invention, in which a constant current source 501 of each sensor 5 B, 8.-8. Since the voltage drop between the input and output terminals due to a short circuit or disconnection at each sensor section S1.S, -S, induced by an intruder is different, The location of the intrusion can be determined based on the indicated value.

FIG. 9 shows still another embodiment of the present invention, in which the same parts as in FIG. S will be described using the same reference numerals.

600cm receiver, 601, 602, 603-...
are a plurality of comparators each supplied with a constant current and a predetermined voltage. These combiner units 1601゜'602, 603, - have respective sensor parts g,,s,-,
・S, [Set the short circuit and set the output voltage value obtained when a disconnection occurs (."DD is the supply voltage, vsI is the ground voltage.
o is constant current 501 and converter @01.602.6
03-... and V section, ff1ff noise filter, SO
O is a light emitting diode display circuit to which outputs from the comparators 601, 602, 603, . . . are supplied, and can be configured as 5, for example, as shown in FIG.

10th IQ K'M'-"Cs signal line 601S,
6028.4303, 6048... are the output signal lines of 602.60S, 604-#J, respectively, and the signal 4960111 is connected to the AND gate 601.
Connect to A, 602B, 603B, 6048-, signal 1
II8028 and gate 602B, 603B, 60
Connect to 4m - and the same goes for signal @ 6038.6
Connect the 048 as shown, and also connect the
) The AND output of AND gate 60211 is supplied to AND gate 602 through inverter 6G2I.
603 MU, directly, AND GO) 603 MU, each AND GO) 601A, 60! The light emitting diodes 601L and 602Lt' are caused to emit light by the AND output of the system. (Similarly, and-go each signal) 603A,
604A・-, and gates 603A, 60
Light emitting diode 603L by AND output of 4A...
, 604L-... are caused to emit light. In other words, if the output signal of the comparators 601, 602, and 603- is set to a high level when the comparison voltage is high as well as the reference voltage, if the circuit shown in @6 is used, the intrusion point WrK can be handled. Nine light emitting diode 601L.

Can you make any one of 602I, 603L, etc. emit light?

Constructed like this, nine intrusion warning devices receive 91 aircraft and 600
If the voltage between the input and output terminals of is supplied to the comparator group through the noise filter 100, the sensor parts g, s, .
...S, if any one of them is disconnected or short-circuited, a voltage drop will occur due to the disconnection, so the detection signal will be low from the comparator that has a reference value corresponding to the voltage value.
ED display circuit soo K is supplied to the sensor section that is disconnected or short-circuited, in other words, one of the light emitting diodes @OIL corresponding to the intrusion location.

602L, 60SL-. can be made to emit light to notify the occurrence of an intrusion accident along with its location.

As explained above, according to the present invention, there is a senna section that detects a change in a physical quantity caused by an intruder and generates a detection signal, and a detection signal from the senna section that detects the occurrence of an intrusion accident and the location where the accident occurred. In an intrusion warning system having a receiver for detection, a plurality of sensor sections each have a length suitable for monitoring, these sensor sections are connected in cascade, and the detection signal supplied to the receiver is disconnected or short-circuited. Since the level is different depending on the position of the senna part, the receiver can be made smaller and the construction cost can be made much cheaper than in the past.

According to the intrusion warning device of the present invention, each sensor section has a suitable length for monitoring, and can be installed in 2 to 30 sections (7 m), so that a long border of about 2 to 3 mm can be installed. lines can be monitored with the installation of one senna network.

In the above explanation, the case where a pressure-sensitive sensor is used as a load-sensing sensor has been described as an example, but the present invention is not limited to an intrusion warning device using a pressure-sensitive sensor, and can be applied to infrared beam sensors, vibration detection The idea of the present invention is applied to an intrusion prevention device that supplies an electrical output signal to a receiver by detecting a physical quantity of an object, such as a sensor, an electric field strength sensor, a microwave beam sensor, or an ultrasonic beam sensor. Of course you can.

[Brief explanation of the drawing]

The first elbow is a schematic diagram showing an example of the configuration of a conventional intrusion prevention device, FIG. 2 is a circuit diagram of the device in FIG. FIG. 2 is a block diagram showing an example. Fig. 4 is a circuit diagram equivalent to Fig. 3, Fig. S is a BLI diagram showing an example of the intrusion warning device of the present invention, and Fig. 6) and -) are respectively load sensing sensors, and Fig. 6). is a partially cutaway cross-sectional view, Figure 6-) is an A-A cross-sectional view of Figure 6), and Figure 7 is a cross-sectional view of
The figure is a circuit diagram equivalent to that in Figure 5, Figures 8 and 9 are circuit diagrams showing the configuration of a receiver in other embodiments of the intrusion warning device of the present invention, and Figure 10 is a circuit diagram of the light emitting diode display circuit. FIG. 2 is a block diagram showing an example. 1-・Senna section, 2m, IB...detection line, 3
...Resistor, 4.Sheathing material, 5.Receiver, 6.-Bridge 1 circuit, 94. power supply,
8. , 8. , sm-senna part, 102m, 1 (1mB, 202m, '102B, n02m, *O
@B-detection m. 103.104, 203.204. n03. nQ4 ・
-Resistance, 500.600--Receiver, 501-Constant current source, 502-DC voltmeter, 601.60
2.603...Punpareta, T
oo...Noise filter, 800...Light emitting diode display B path, 6918-604B-...Signal line, 110
1mm~604mm, 601B~804B...AND gate, 6011~604I-...Inverter%
605L~804L - Light emitting diode. Patent applicant: Fuji Electric Seizo Kinsha Co., Ltd.Same applicant: Miyakotomi±1-Kaigo Shikaku Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] 1) 1 by an intruder at the boundary 11 guarded against intrusion;
An intrusion prevention device comprising a detection unit that detects a change in a physical quantity caused by a wrinkle detection unit, and a receiver that detects an intruder (based on an intruder detection signal that is detected by a wrinkle detection unit and fluctuates depending on the change in the physical quantity). A plurality of detection units corresponding to each of the boundary lines divided into sections are connected in series, and the intruder detection signal when any one of the detection units detects a change in the physical quantity is transmitted to the detection unit. II! #An intrusion warning device that uses mold. 2. In the intrusion warning device according to claim 1, the detection section is a unit detection section that detects short circuit or disconnection and has a resistance network, and wrinkle unit detection IB is connected in series. Intrusion warning device. 3) 4I Scope of Claims Il! I. The intrusion prevention device according to item 2, comprising a bridge circuit including the unit detection section,
An intrusion warning device characterized in that the intruder detection signal is changed by a bridge resistance of the first bridge that changes in response to which one of the detection units detects a change in the physical quantity. 4) In the intrusion warning device according to claim 2, supplying a constant current to the series-connected unit detection parts,
An intrusion warning device characterized by detecting a change in the physical quantity. S) In the intrusion warning device according to claims S1 to 4, the detection unit (having a corresponding display element,
According to the intruder detection signal, the circular display element corresponding to any one of the detection units that has detected a change in the physical quantity is turned on to determine the area where the intrusion has occurred.
A unique intrusion warning device.