JPH06337991A - Burglar sensor - Google Patents

Abstract

PURPOSE:To simply and accurately narrow down intruder's intruding Position. CONSTITUTION:This burglar sensor is provided with an intrusion sensor 1 for outputting an intrusion signal at the time of detecting the existence of an intruder, an instantaneous drive instructing part 2 for instructing of drive immediately after receiving the intrusion signal, a delay holding drive instructing part 3 for instructing of holding drive after the passage of a prescribed delay time from the reception of the intrusion signal, an external signal output part 4 for outputting an external information signal immediately after receiving a drive instruction, and an information display part 5 for displaying information immediately after receiving the drive instruction and constituted so that the instructing part 2 gives the drive instruction to the output part 4 and the instructing part 3 gives the holding drive instruction to the display part 5. The instructing part 2 gives the drive instruction to the output part 4 and the display part 5 and the instructing part 3 applies the holding drive instruction to the display part 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crime prevention detector connected to a plurality of security lines.

[0002]

2. Description of the Related Art FIG. 6 is an explanatory diagram showing a security detector connected to a security line of a security receiver. In FIG.
R is a crime prevention receiver, L is a warning line, and S _1, ... S _n are crime prevention detectors. The crime prevention detectors S _1, ... S _n are external signal output units (in many cases, relay b contacts are used) Sr _1, ... Sr that immediately output an external notification signal when an intruder is present in each sensing area. equipped with _n . External signal output unit Sr _1, ... Sr _n, if absent the intruder alarm as line L forms a closed loop, are connected in series to the warning line L. Therefore, one of the security detectors S _1, ... S _n detects an intruder, and the external signal output units Sr _{1 ,} .
_When any one of _n outputs (relay b contact closes to open), the closed loop of the warning line L is broken. Then, the security receiver R recognizes that there is an intrusion somewhere in the security section of the security line L, and issues an intrusion alarm.

By the way, in the crime prevention system of the crime prevention receiver R and the crime prevention detectors S _1, ... S _n as described above, for example, the crime prevention detector S ₂ detects an intruder and the external signal output section S is detected.
Security receiver R due to r ₂ being closed → opened
Even if the operator has issued an intrusion alarm, it can be determined that there is an intrusion somewhere in the alert section of the alert line L.
Since the security detector S ₂ detects an intruder, it is not known that the security receiver R has issued an intrusion alarm. That is, it is not possible to accurately identify the intrusion location.

Therefore, conventionally, the following method has been adopted. That is, the first method is to provide each of the crime prevention detectors with a notification display unit that lights at the same time when an intruder is detected and then keeps the lighting state until it is artificially reset. The second method is to add a control line to the security receiver and connect the control line to each security detector, and immediately add a control signal to the control line when there is an intrusion alarm. The method is to keep the notification display section of the crime prevention sensor turned on at the same time as detecting an intruder and keep the intrusion sensors of all other crime prevention sensors in a blind state.

[0005]

However, in the above-mentioned first method, in order to narrow down the invading place of the intruder, it is inspected which one of the crime prevention sensors has the alarm display unit turned on. However, during this inspection, the patrol personnel themselves are detected by the security detector, and the notification display section of the security detector is turned on. Therefore, even if the patrol officer turns on the light when he / she confirms the notification display section of the crime prevention detector, this light may be turned on by the original intruder's detection, or may be turned on by the patrol officer's own detection. It is difficult to distinguish whether it is true. In the second method,
This is a method of keeping the alarm indicator of the crime prevention sensor turned on at the same time as detecting an intruder and keeping the intrusion sensors of all other crime prevention sensors in a blind state. Although there is no problem that the notification display section of the security detector is lit when the alarm is detected, it can be handled only by a dedicated security receiver with a control function for adding a control signal to the control line and the number of wires increases There was a problem that I would do it.

The present invention has been made to solve the above problems, and its purpose is to provide a special function even when a plurality of security sensors are connected to each warning line. An object of the present invention is to provide a crime prevention sensor capable of easily and accurately narrowing down an intruder's invasion location without requiring a crime prevention receiver added with.

[0007]

In order to solve the above-mentioned problems, the present invention provides an intrusion sensor for outputting an intrusion signal when an intruder is present, and the intrusion signal according to the present invention. An immediate drive instructing section that immediately instructs driving upon reception, a delay holding drive instructing section that instructs holding driving after a predetermined delay time has elapsed when receiving the intrusion signal, and an external signal that immediately outputs an external notification signal when receiving a drive instruction. A crime prevention sensor comprising an output section and a notification display section for displaying a notification immediately when a drive instruction is received, wherein the immediate drive instruction section gives a drive instruction to the external signal output section, and the delay holding drive is provided. The instructing unit gives a holding drive instruction to the notification display unit.

According to the second aspect of the present invention, an intrusion sensor that outputs an intrusion signal when an intruder is present, and an immediate drive instructing section that immediately instructs the drive when the intrusion signal is received,
When the intrusion signal is received, a delayed holding drive instructing unit that instructs holding drive after a predetermined delay time has elapsed, an external signal output unit that immediately outputs an external notification signal when the driving instruction is received, and an notification display is immediately performed when the driving instruction is received. A crime prevention sensor including a notification display unit, wherein the immediate drive instruction unit gives a drive instruction to the external signal output unit and the notification display unit, and the delay holding drive instruction unit is the notification display unit. The holding drive instruction is given to the.

[0009]

With the above construction, in the invention according to claim 1, when the intrusion sensor detects an intruder, the external signal output section immediately outputs the external notification signal and the notification display section is The notification display is performed after the lapse of a predetermined delay time, and thereafter the notification display is maintained. Therefore, after the alarm notification of the crime prevention receiver is known, even after the lapse of the predetermined delay time, even if the spectator patrols to narrow down the invading place of the intruder and is detected by the crime prevention detector, the notification display unit is immediately displayed. Since the notification display is not performed, it is possible to sufficiently approach the respective crime prevention detectors and investigate whether or not the notification display unit is performing the notification display. Then, when approaching, it can be determined that there is an intrusion in the sensing area of the crime prevention sensor for which the alarm display of the alarm display unit has already been displayed, and the intrusion location can be narrowed down.

Further, according to the second aspect of the invention, when the intrusion sensor detects an intruder, the external signal output section immediately outputs the external notification signal and the notification display section also immediately performs the notification display. Moreover, the notification display unit cannot detect the intruder until the predetermined delay time elapses after the intrusion sensor first detects the intruder (the intruder is out of the sensing area, or , The once opened door is closed again), the notification display unit immediately stops the notification display. Therefore, in a case where the range of the sensing area of the crime prevention sensor is to be checked and investigated, the investigator in the sensing area can perform real-time operation without waiting from the notification display operation of the notification display unit until the predetermined delay time elapses. You can check and confirm with.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a crime prevention detector according to the present invention will be described below with reference to FIGS. 1 to 3, and a second embodiment will be described with reference to FIGS.
Each will be described in detail based on.

[First Embodiment] FIG. 1 is a block diagram showing a crime prevention detector, and FIG. 2 is a circuit diagram showing a delay holding drive instruction unit and a notification display unit of the crime prevention detector. 3A and 3B are timing charts for explaining the operation of the delay holding drive instructing unit of the crime prevention sensor. FIG. 3A shows the timing of the intrusion signal of the intrusion sensor, and FIG. 3B shows the potential change timing of the point Pb in FIG. 2, (c) shows the timing of the potential change at the Pc point in FIG. 2, (d) shows the timing of the potential change at the Pd point in FIG. 2, and (e) shows the potential change at the Pe point in FIG. The timing is shown, (f) shows the display timing of the notification display unit, and (t) shows the time axis.

As shown in FIG. 1, the crime prevention detector comprises an intrusion sensor 1, an immediate drive instruction section 2, a delay hold drive instruction section 3, an external signal output section 4, a notification display section 5 and a changeover switch 6. There is. The intrusion sensor 1 includes a sensing area A, and is a portion that outputs an intrusion signal to the immediate drive instructing section 2 and the delay holding drive instructing section 3 when an intruder is present in the inspecting area A.
The immediate drive instruction section 2 is a section that gives a drive instruction to the external signal output section 4 immediately upon receiving an intrusion signal from the intrusion sensor 1. The external signal output unit 4 is a unit that immediately outputs an external notification signal to a warning line (not shown) connected to a security receiver (not shown) when receiving a drive instruction from the immediate drive instruction unit 2. . The notification display section 5 is a section that displays a notification when a drive instruction is received from the immediate drive instruction section 2 or the delay holding drive instruction section 3, and is provided at a location easily visible on the outer contour of the crime prevention sensor.

The change-over switch 6 is used during the operation of the security detector and during the work of confirming whether or not the detection area A is within a desired range when the security detector is installed.
The display mode of the notification display unit 5 is switched, and is connected to the delay holding drive instructing unit 3 side during operation and connected to the immediate drive instructing unit 2 side during sensing confirmation work. The operation portion (not shown) of the changeover switch 6 is provided at an easily accessible portion of the outer contour of the crime prevention sensor.

The delay holding drive instructing section 3 and the notification display section 5 described above are specifically configured by circuits as shown in FIG. That is, as shown in FIG. 2, the delay hold drive instructing section 3 includes the NAND circuits 30, 31, 32 and the capacitor C.
It is composed of _1, C ₂ , resistors R _1, R ₂ and a variable resistor Vr. The notification display unit 5 is composed of a light emitting diode D and a resistor R ₃ . Then, the above-mentioned respective components form the delay holding drive instructing section 3 and the notification display section 5 by being connected as follows.

That is, in the delay hold drive instructing section 3, one input terminal of the NAND circuit 30 has the intrusion sensor 1
Of the NAND circuit 30, the other input terminal of the NAND circuit 30 is connected to the output terminal of the NAND circuit 31, and the output terminal of the NAND circuit 30 is one input terminal of the NAND circuit 31, one end of the capacitor C ₁ and the resistor R _1. And one end of each. The other end of the condenser C ₁ is grounded. The other input terminal of the NAND circuit 31 is connected to the DC power supply _Vcc . The other end of the resistor R ₁ is connected to one end of the one end of the capacitor C ₂ resistor R ₂ via the variable resistor Vr, the other end of the resistor R ₂ is connected to respective input terminals of the NAND circuit 32 There is. Capacitor C ₂
The other end of is grounded. The output terminal of the NAND circuit 32 is connected to one contact terminal of the changeover switch 6.

In the notification display section 5, the anode of the light emitting diode D is connected to the DC power source _Vcc, and the cathode of the light emitting diode D is connected to the switching terminal of the changeover switch 6 via the resistor R _3. There is. In FIG. 2, the immediate drive instruction unit 2 and the external signal output unit 4 are omitted.

The security sensor constructed as described above operates as follows. That is, if an intruder invades the sensing area A of the security detector at time t ₁ as shown in FIG. 3A, the potential of the output of the intrusion sensor 1 (point Pb in FIG. 2) is as shown in FIG. As shown in b), it goes from High to Low at time t ₁ and the output terminal of the NAND circuit 30 (point Pc shown in FIG. 2).
Becomes Low → High at time t _{1 as} shown in FIG. Then, the output terminal of the NAND circuit 31 becomes Low, and the output terminal of the NAND circuit 30 (point Pc shown in FIG. 2).
Holds High. In this way once High
The output terminal of the NAND circuit 30 is a DC power supply V _cc.
Holds High until is reset (OFF → ON). That is, as shown in FIG. 3A, an intruder who invades at time t ₁ goes out of the sensing area A of the crime prevention sensor at time t ₂ and the output of the intrusion sensor 1 (point Pb shown in FIG. 2). ) Even if the potential becomes High again at time t ₂ , the NAND circuit 3
The output terminal of 0 holds High until the DC power supply _Vcc is reset (OFF → ON).

[0019] Then, the charged at a rate based on the time constant determined by a combined resistance value and the capacitance value of the capacitor C ₂ of the capacitor C ₂ and the resistor R ₁ and the variable resistor Vr, the capacitor C ₂ and a resistor R ₂ The potential at the connection point (point Pd in FIG. 2) gradually starts rising from time t _{1 as} shown in FIG. 3 (d). The rate of rise of the potential at the point Pd shown in FIG. 2 can be adjusted by changing the value of the variable resistance Vr.
The potential at the point Pd shown in FIG. 2 is set so as to exceed the threshold voltage V _th when the predetermined delay time T of the delay holding drive instructing section 3 has elapsed. The predetermined delay time T is usually set to about 5 minutes.

[0020] Thus, at time t ₃ when passed from the time t ₁ of a predetermined delay time T, as shown in FIG. 3 (e), NAND
The output terminal of the circuit 32 (Point Pe in FIG. 2) is High → Low
Becomes Further, the output terminal of the NAND circuit 32 (point Pe in FIG. 2) is kept low until the DC power supply _Vcc is reset (OFF → ON). Therefore, the changeover switch 6
3 is connected to the output terminal side (point Pe in FIG. 2) of the NAND circuit 32, the notification display unit 5, that is, the light emitting diode D is turned on at time t _{3 as} shown in FIG. 3 (f). This lighting continues until the DC power supply _Vcc is reset (OFF → ON).

The security detector operating as described above can be operated as follows. That is, a plurality of the security detectors are connected to a security line (not shown) from a security receiver (not shown), and one security detector among the plurality of security detectors is External signal output unit 4 immediately after detecting an intruder
If an external alarm signal is output from the security receiver and the security receiver immediately gives an alarm notification, the patrol officer who investigates the intrusion location will notify the alarm line after a predetermined delay time T has passed from the alarm notification of the security receiver. Patrol the security detectors in the warning area.

Then, since the predetermined delay time T has already passed from the alarm notification, the alarm display unit 5 of the security detector that has sent the alarm notification to the security receiver should already be on. Further, if an inspector is patrolling and an intrusion is detected, the notification display unit 5 of the crime prevention sensor should be turned off until the predetermined delay time T elapses. That is, the patrol officer can approach the respective crime prevention sensors and investigate whether or not the notification display of the notification display unit is being performed with sufficient margin. Then, when approaching, it can be determined that there has been an intrusion in somewhere in the sensing area of the crime prevention sensor for which the notification display of the notification display unit has already been performed.

That is, in the crime prevention detector as described above, it is possible to easily and accurately narrow down the intruder's intrusion location without the need for a crime prevention receiver having a special function, and to inform Since the notification display on the display unit is performed after the elapse of the predetermined delay time T, the intruder does not know that the crime prevention detector has operated.

The immediate drive instructing section 2 has a changeover switch 6
On the other hand, in synchronization with the intrusion signal output from the intrusion sensor 1, Low is output only while the intruder is invading the sensing area A. Therefore, when the switching terminal of the change-over switch 6 is connected to the immediate drive instruction section 2 side, the notification display section 5 always turns on / off the light in synchronization with the intrusion signal of the intrusion sensor 1. That is, in the case where the range of the sensing area A of the crime prevention detector is to be checked and checked, the investigator can efficiently check and check the sensing area A in real time without waiting from the turning on / off of the notification display unit.

[Second Embodiment] FIG. 4 is a block diagram showing a crime prevention detector. 5A and 5B are timing charts for explaining the operation of the crime prevention sensor. FIG. 5A shows the timing of the intrusion signal of the intrusion sensor, FIG. 5B shows the display timing of the notification display unit, and FIG. Shows. In FIG. 4, the same parts as those in the first embodiment described above are designated by the same reference numerals. Therefore, detailed description will be omitted for the same parts as those in the first embodiment.

As shown in FIG. 4, the security detector comprises an intrusion sensor 1, an immediate drive instruction section 2, a delay holding drive instruction section 3, an external signal output section 4 and a notification display section 5. The security detector is different from the above-mentioned first embodiment in that it has the following features. That is, the switch switch 6 is deleted by directly connecting the portion of the notification display unit 5 connected to the changeover switch 6 to the output of the immediate drive instruction unit 2 and the output of the delay hold drive instruction unit 3, respectively. .

There is a security detector configured as described above.
However, detailed description thereof is omitted because it overlaps with that of the first embodiment.
But it works as follows: For example, as shown in FIG.
At the time t₁Intrudes into the detection area A of the security detector
At time t₂Go out at time t₃Breaks into the time again
t_FourGo out again at time t₆Invaded again at time t ₇
Assuming that the user goes outside again, the notification display unit 5 is displayed in FIG.
The notification display as shown is performed.

That is, from the time t ₁ when the security detector first detects an intruder to the time t ₅ when the predetermined delay time T of the delay holding drive instructing unit 3 elapses, the notification display unit 5 is intruded. The light is turned on only during the period when the person is invading the sensing area A (the period from time t _{1 to} t _{2 and} the period from time t _{3 to} t ₄ ). Further, after time t ₅ , the notification display unit 5 keeps lighting according to the drive instruction from the delay hold drive instruction unit 3, and the notification display unit 5 is no longer displayed as before and after time t ₆ and time t _7. The section 5 does not turn on or off in synchronization with the intrusion of the intruder's sensing area A. The notification display unit 5 is turned on again in synchronization with the intruder's entry into the detection area A.
In order to turn off the light, a reset such as turning the power off and then on may be performed.

The security sensor constructed as described above can be operated as follows. That is, as in the first embodiment described above, a plurality of security detectors are connected to a security line (not shown) from a security receiver (not shown). Assuming that one security detector with a sensor detects an intruder and immediately outputs an external notification signal from the external signal output unit 4, and the security receiver immediately gives an alarm, After a lapse of a predetermined delay time T from the alarm notification of the security receiver, the security detector in the warning section of the warning line that has issued the warning is patrolled.

Then, since the predetermined delay time T has already passed from the alarm notification, the alarm display section 5 of the security detector that has sent the alarm notification to the security receiver should already be on. Further, if the inspector is patrolling and an intrusion is detected, the notification display unit 5 of the crime prevention sensor is at least when the inspector goes out of the detection area A until the predetermined delay time T elapses. It should go out. That is, the patrol officer checks whether or not the notification display section 5 of the crime prevention detector turns on and off by entering and leaving the sensing area A in the same manner as in the case of the confirmation survey of the sensing area A. However, if the notification display unit 5 of the security detector does not go out, it can be determined that there has been an intrusion in the sensing area of the security detector. That is, in the security detector as described above, it is possible to easily and accurately narrow down the intruder's invasion location without the need for a security receiver having a special function.

Further, after the alarm display unit 5 is turned off by performing a reset such that the power is turned off and then on to the security detector, the delay holding drive is started from the time t ₁ when the security detector first detects an intruder. Until time t ₅ when the predetermined delay time T of the instruction unit 3 elapses, the notification display unit 5 always turns on and off in synchronization with the intrusion signal of the intrusion sensor 1. That is,
In the case of confirming and investigating the range of the sensing area A of the crime prevention detector, the investigator does not operate from the time when the intruder is first detected until the time when the predetermined delay time T of the delay holding drive instructing unit 3 elapses. The confirmation and investigation of the sensing area A can be efficiently performed in real time from the turning on / off of the notification display unit without waiting time.

It is needless to say that the present invention is not limited to the above-mentioned embodiment, and the timing operation of the delay holding drive instructing section for a predetermined delay time may be controlled by using a microcomputer.

[0033]

Since the crime prevention sensor of the present invention is constructed as described above, the invention according to claim 1 is a case where a plurality of crime prevention sensors are connected to each warning line. However, the location of the intruder can be easily and accurately narrowed down without the need for a crime prevention receiver having a special function. In addition to the above effects, Thus, there is an effect that it is possible to provide an excellent crime prevention sensor capable of easily and efficiently confirming and checking the sensing area by using the notification display of the notification display unit.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a crime prevention detector according to the present invention.

FIG. 2 is a circuit diagram showing a delay holding drive instructing section and a notification display section of the crime prevention sensor.

FIG. 3 is a timing chart for explaining the operation of the delay holding drive instructing section of the crime prevention sensor.

FIG. 4 is a block diagram showing another embodiment of the crime prevention detector according to the present invention.

FIG. 5 is a timing chart explaining the operation of the crime prevention detector.

FIG. 6 is an explanatory diagram of a connection showing how the crime prevention detector is used.

[Explanation of symbols]

 1 Intrusion sensor 2 Immediate drive instruction section 3 Delay hold drive instruction section 4 External signal output section 5 Notification display section T Predetermined delay time

Claims (2)

[Claims] 1. An intrusion sensor that outputs an intrusion signal when an intruder is present, an immediate drive instructing unit that directs a drive immediately when the intrusion signal is received, and a holding drive after a predetermined delay time has elapsed when the intrusion signal is received. A crime prevention detector comprising: a delay holding drive instructing section for instructing, an external signal output section for immediately outputting an external informing signal when receiving a drive instruction, and an informing display section for informing immediately when receiving a drive instruction, The crime prevention sensor, wherein the immediate drive instruction section gives a drive instruction to the external signal output section, and the delay holding drive instruction section gives a hold drive instruction to the notification display section. 2. An intrusion sensor that outputs an intrusion signal when an intruder is present, an immediate drive instructing unit that directs driving immediately when the intrusion signal is received, and a holding drive after a predetermined delay time has elapsed when the intrusion signal is received. A crime prevention detector comprising: a delay holding drive instructing section for instructing, an external signal output section for immediately outputting an external informing signal when receiving a drive instruction, and an informing display section for informing immediately when receiving a drive instruction, The immediate drive instruction unit gives a drive instruction to the external signal output unit and the notification display unit, and the delay holding drive instruction unit gives a holding drive instruction to the notification display unit. Security detector.