JP3380608B2 - Security system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crime prevention system having an alarming and displaying function and an intruder detector which is driven for 24 hours.

[0002]

2. Description of the Related Art Generally, when an intruder detector 1 is used to monitor an intruder in a building or the like, the monitoring area is divided into small areas 2 such as a floor as shown in FIG.
A plurality of intruder detectors 1 are installed for each. The intruder detector 1 is connected in series in units of small areas 2 directly or via a repeater to a warning indicator 3 such as a receiver. A warning display lamp 4 is provided.

The intruder detector 1 is provided with a warning indicator lamp which is turned on only when a human body is detected and a warning is issued, and the warning indicator lamp 4 on the warning indicator 3 side is used to notify the intruder. Only the alarm display lamp 4 of the small area 2 to which the person detector 1 belongs is driven so as to be lit continuously or blinking. Further, the alarm display 3 may be further connected to a center such as a security company via a telephone line.

When operating such a monitoring system, an inspector such as a guard man goes to the small area 2 when the alarm display lamp 4 for each small area 2 is turned on, and any intruder in the small area 2 is inspected. In order to confirm whether the detector 1 has issued an alarm, the intruder detector 1 is provided with an alarm storage indicator lamp that lights up or blinks for a predetermined time to indicate that the alarm has been issued.

Further, the intruder detector 1 is driven for 24 hours (all day), and is driven even in the daytime when it is not necessary to monitor the intruder. Therefore, the alarm indicator light and the alarm storage indicator light of the intruder detector 1 are turned on when a person is detected during the daytime even when not in the monitoring state. FIG. 9 shows the relationship between the alerting timing of the intruder detector 1 and the lighting timing of the alerting memory indicator lamp. When a human body is detected, the alarm indicator light is turned on only at the time of detection and an alarm signal is sent to the alarm indicator 3, and the alarm storage indicator light is kept for a relatively short predetermined time T1 after the alarm is issued. After the predetermined time T1 is not lit, for example, during a relatively long predetermined time (T2 in the figure).
T1) It is driven so as to light up.

The reason for providing the non-lighting time T1 after the alarm is issued is that if the alarm storage indicator light is turned on immediately without the predetermined time T1, the intruder detector that has issued the alarm is provided. When the inspector goes to check the monitored area,
The intruder detector in the monitoring area detects an inspector, and the alarm storage indicator light of the detected intruder detector 1 lights up, and which detector 1 first detected the intruder is detected. This is because it cannot be identified. Note that, for example, the non-lighting time T1 after the above notification is set to, for example, about 5 minutes,
The time (T2-T1) that the alarm storage indicator light is turned on is set to about 60 minutes.

[0007]

However, in such a conventional crime prevention system, since it is driven all day and the warning storage indicator light is turned on only after a predetermined time has passed after it is turned on, a regular human being is turned off. When the person lastly left the room, the warning memory indicator light was turned on and the warning memory indicator lamp was turned on, and an illegal person entered during the time (T2-T1) until the warning memory indicator lamp was turned off. However, since the alarm storage indicator light is still lit, it is unknown whether the alarm memory indicator light is illuminated by this intruder, and as a result, the intruder detector that detected the intruder cannot be found. There is a problem.

In view of the above conventional problems, the present invention turns on the alarm storage indicator lamp when an intruder is detected after the monitoring state is set after a regular person leaves the room when driven all day. It is an object of the present invention to provide a crime prevention system including an intruder detector that can be activated.

[0009]

In order to achieve this object, the present invention provides a security system including an intruder detector which is driven by being supplied with power from the outside. An intruder sensor that detects a human body, an alarm output circuit that outputs a warning signal to an external device when the intruder sensor detects a human body , and an intruder sensor that detects a human body,
The first predetermined time and the second predetermined time after the first predetermined time has elapsed.
Timer means for measuring time, and the first means of the timer means
It does not turn on during the predetermined period of time, and turns on during the second predetermined period of time.
Light or blinking, and control to turn off after the second predetermined time
When the alarm storage indicator lamp to be controlled and the reset signal from the external device are received , the timer means is reset to
When the time is being measured at a fixed time, the alarm storage indicator lamp is issued after the time has elapsed.
And a reset means for turning off the alarm storage indicator lamp during the second predetermined time counting .

Further, specifically, the reset signal from the external device is characterized by a momentary interruption of power supply to the timer means or a reset command. Further, it is characterized in that it is provided with a reset switch operated when the external device shifts from the non-monitoring state to the monitoring state, and outputs a reset signal when the reset switch is operated.

Further, an infrared remote control transmitter is provided, an infrared light receiving section is provided in the intruder detector, and the infrared light receiving section is used for the above-mentioned operation.
When receiving the infrared signal from the infrared remote control transmitter , the alarm storage indicator lamp is turned on or blinks when the timer means is counting the predetermined time.

[0012]

According to the present invention, when driven by the power supply from the external device, the timer means is reset by the reset signal from the external device and the alarm storage indicator lamp that is lit or blinks is turned off. . Therefore, the alarm storage indicator lamp can be turned on when an intruder is detected after the monitoring state is set after the regular person leaves the room when driven all day.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a crime prevention system according to the present invention. When the intruder detector 10 shown in FIG. 1 is used to detect an intruder, the monitoring area is divided into small areas 2 such as a floor as shown in FIG. 8, and a plurality of intruder detections are made for each small area 1. The vessel 10 is installed. Further, the intruder detector 10 is a small area 2 unit and is a warning indicator 3 such as a receiver directly in series via a warning line L1 or via a repeater.
0, and is connected to the alarm display 30 via the power supply line L2 to receive DC power from the alarm display 30.

On the alarm display 30, the alarm display lamp 4 that holds and displays the door-locking status for each small area 2, the alarm display lamp 4 is reset, and the intruder detector 10 is powered on. A reset switch 31 having a combined function of instantaneous interruption is provided. In addition, the alarm display 30
Is connected to a center 42 via a transmitter 40 and a communication line 41 such as a telephone line.

As the human body detecting element 11 as the intruder sensor in the intruder detector 10, for example, a pyroelectric sensor for detecting infrared energy emitted from the human body is used, and the control circuit 12 uses a detection signal of the detecting element 11. On the basis of the above, the alarm display circuit 13, the alarm output circuit 14, the alarm holding / timer circuit 15, the flicker circuit 16, the alarm storage indicator lamp 17, etc., which are shown in detail in FIG. 2, are controlled.

The alarm display circuit 13 includes an alarm display lamp 13a. The alarm display lamp 13a is driven so that it is turned on only when the detection element 11 detects a human body and issues an alarm. The alarm output circuit 14 includes a normally closed relay contact 14a that is connected in series to the alarm display 30 via the alarm line L1. The relay contact 14a outputs an alarm when the detection element 11 detects a human body. When it is done, it is driven to open for a certain time. Therefore, the intruder detector 10 in the small area 2
When any one of the relay contacts 14a of 1 is opened, it is detected by the alarm display 30 and the alarm display lamp 4 of the small area 2 is kept lit.

The configuration and operation of the alarm holding / timer circuit 15 will be described in detail with reference to FIGS. First, second
The monostable multivibrators 151 and 152 are used as the timer circuit of the first timer circuit, and the first timer circuit is used to measure the time T1 until the alarm storage indicator lamp 17 is turned on after the alarm is issued. After the circuit is reported,
It is used to measure the time T2 until the alarm storage indicator lamp 17 is turned off.

Monostable multivibrator 15
A time setting circuit 153 for setting the times T1 and T2 is connected to the terminals 1 and 152, respectively. Explaining the time setting circuit 153, the + line of the power supply line is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the RX / CX terminal via the variable resistor Rx. A diode D1 for preventing secondary destruction is connected to both ends of the resistor R1 and the variable resistor Rx with opposite polarities, a capacitor C3 is connected to the RX / CX terminal and the CX terminal, and the CX terminal is connected to the ground side (power supply line). -Line). Therefore, it is possible to set arbitrary time-up times T1 and T2 by adjusting the value of the variable resistor Rx.

Monostable multivibrator 15
An alarm signal (pulse) from the control circuit 12 is input to the B terminals of Nos. 1 and 152, and an initial circuit 154 is connected to the CL terminals. Here, if a pyroelectric element is used as the detection element 11, the rise of the pyroelectric element after the power is turned on is unstable. Therefore, in order to clear the monostable multivibrators 151 and 152 after the pyroelectric element is stabilized, this The initial circuit 154 is used.

Explaining the initial circuit 154,
One end of the resistor R2 is connected to the + line of the power supply line, and the other end is grounded via the capacitor C1 and connected to the CL terminal via the inverters 155 and 156. A diode D2 is also connected to both ends of the resistor R2 with opposite polarities. Therefore, when the power is turned on, the capacitor C2 is changed according to the time constants of the resistor R2 and the capacitor C1.
1 is gradually charged, and when the voltage becomes equal to or higher than a predetermined voltage, the monostable multivibrators 151 and 152 are cleared.

The alarm holding circuit 157 is used to hold the alarm pulse. In the alarm holding circuit 157, the + line of the power supply line is connected to one input terminal of the AND gate 158, the alarm pulse is input to the other input terminal, and the output terminal is connected via the diode D3. . The output terminal of the AND gate 158 is connected to the AND gate 1 via the integrating resistor R3 and the capacitor C2.
59 is connected to one of the input terminals of the AND gate 59. Therefore, when the alarm pulse is input in the power-on state, the capacitor C2 is charged according to the time constants of the resistor R3 and the capacitor C2, and when the voltage exceeds a predetermined voltage, the output of the AND gate 158 is output. The signal a continues to be high level.

The other input terminal of the AND gate 159 is connected to the inverted Q terminal of the monostable multivibrator 151 which constitutes the first timer. The output signal of the inverted Q terminal becomes low level when the alarm pulse is input and becomes high level when the set time T1 elapses. Therefore, the output signal b of the AND gate 159 is set at the set time after the alarm pulse is input. It goes high when T1 has passed.

The output terminal of the AND gate 159 is A
AND connected to one input terminal of the ND gate 160
The other input terminal of the gate 160 is connected to the Q terminal of the monostable multivibrator 152 which constitutes the second timer. The output signal of the Q terminal becomes high level when the alarm pulse is input, and the output signal becomes the set time T2.
Becomes low level after passing, the AND gate 16
The output signal c of 0 becomes high level after the elapse of the set time T1 of the first timer after the alarm pulse is input, and becomes low level after the elapse of the set time T2 of the second timer. Therefore, the signal c of high level during T2-T1 is output to the flicker circuit 16 shown in FIG. 1, and the alarm storage indicator lamp 17 blinks.

When an intruder is monitored in a building or the like using the intruder detector 10 having such a notification memory display function, the monitoring area is a small area 2 such as a floor as shown in FIG.
Into a plurality of intruder detectors 10 for each small area 2.
Is installed, and the intruder detector 10 is driven all day long, even during the daytime when it is not necessary to monitor the intruder. Further, at night when it is necessary to monitor an intruder, when the alarm display lamp 4 for each small area 2 is turned on, an inspector such as a guard man goes to the small area 2 and detects which intruder detector 1 in the small area 2. Will be confirmed.

Therefore, in the present invention, when it is confirmed that the last person in the monitoring area has come out when operating such a monitoring system, the reset switch of the alarm display 30 is set to set the monitoring state. 31 is operated. When the reset switch 31 is operated, all the intruder detection stable multivibrators 151 and 152 in the surveillance area are reset via the initial circuit 154, and the monostable clocking the time T1 as shown in FIG. The inverted Q terminal of the multivibrator 151 becomes high level, and the Q terminal of the monostable multivibrator 152 which measures the time T2 becomes low level.

Therefore, the time T1 during which light is not emitted after the alarm is issued
Warning memory indicator lamp 17 of intruder detector 10 that keeps time
In this case, the alarm storage indicator lamp 17 of the intruder detector 10 that does not light after the elapse of the time T1 due to this reset, and is blinking during the time (T2-T1), Since the light is turned off by the reset, the alarm storage indicator lamp 17 can be turned on when there is an intruder after setting the monitoring state after the reset.

The reset switch 3 of the alarm display 30
By the operation of 1, the power to the intruder detector 10 is momentarily cut off, and the holding display of the alarm display lamp 4 is reset. This sets the monitoring status. Next, a modification of the above embodiment will be described with reference to FIGS. As described above, the intruder detector 10 is driven all day, even during the daytime when it is not necessary to monitor the intruder, and the alarm indicator light and alarm memory indicator light are lit and blinking. It may be uncomfortable for non-regular human beings. Therefore, in this modified example, the alarm storage indicator lamp 17 is turned on only when the inspector makes an inspection to prevent discomfort.

FIGS. 5 and 6 show the switch (SW) 5 of the infrared remote control transmitter 50 carried by the inspector after confirming the alarm.
By the operation of 1, the alarm storage indicator lamp 1 of the intruder detector 10a 1
7 shows an example in which 7 is turned on, and the output signal of the alarm holding / timer circuit 15 shown in detail in FIG. 6 is applied to the flicker circuit 16 via one input terminal of the AND gate 60. Therefore, when the other input signal of the AND gate 60 is low level, the alarm storage indicator lamp 17 does not light.

When the inspector operates the switch 51 of the infrared remote control transmitter 50, a signal for lighting the alarm storage indicator lamp 17 is generated from the lighting signal generating circuit 52, and the lighting signal is generated by the modulating circuit 53. The light is modulated and transmitted from the infrared light emitting circuit 54 as infrared light 55. The intruder detector 10a is provided with circuits 56 to 60 which receive the infrared signal from the infrared remote control transmitter 50 and turn on the alarm storage indicator lamp 17, and the infrared signal 55 is received by the infrared light receiving circuit 56. Then, the signal is converted into an electric signal, this signal is amplified by the amplifier circuit 57, and when the discriminating circuit 58 discriminates that it is a lighting signal, the lighting signal of the time interval T3 is generated from the lighting signal generating circuit 59 and the AND gate 60 outputs. Applied to the other input terminal.

Therefore, only the alarm holding / timer circuit 1
Even if 5 holds the alarm signal, the alarm storage indicator lamp 17 does not light up, and if the inspector operates the switch 51 with the infrared remote control transmitter 50 directed toward the intruder detector 10a,
When the alarm holding / timer circuit 15 holds the alarm signal, the alarm storage indicator lamp 17 blinks during the time T3.
In the daytime when it is not necessary to monitor the intruder, it is possible to prevent a normal person who is not the intruder from causing discomfort, and the inspector can normally perform the inspection.

Next, a second embodiment will be described with reference to FIG. In the first embodiment, intruder detectors 10 and 10 are used.
a is connected in series to the warning indicator 30 via the warning line L1 in units of two small areas, and is also connected to the warning indicator 30 via the power supply line L2 so that the warning indicator 30 is connected to the DC power source. In the second embodiment, a plurality of intruder detectors 10b and a warning indicator 30a are provided via a bus type multiplexing line L which also serves as a warning line L1 and a power supply line L2. Are connected.

Each intruder detector 10b includes a multiplex transmission section 61.
A control circuit 62 and an address setting unit 63 are provided.
Further, as in the first embodiment, the human body detection element 11, the alarm display circuit 13 having the alarm display lamp 13a, and the alarm storage display circuit 64 having the alarm memory display lamp 17 are provided. It should be noted that as shown in the first embodiment,
The timer circuit 15 can be realized by software in the control circuit 62.

The address setting unit 63 includes an intruder detector 10
When the address (ID information) for each b is set, and when the detection element 11 detects a human body as in the first embodiment, the alarm display circuit 13 and the alarm storage display circuit 64 are controlled by the control circuit 62. The alarm indicator light 13a and the alarm storage indicator light 17 are turned on (or blink), respectively. Alarm indicator 30
A is provided with a multiplexing transmission section 71, a control circuit 72, and an address storage section 73. Further, similarly to the first embodiment, the alarm display lamp 4 and the intruder detector 10b for each small area 2 are provided. A warning display circuit 4a having an address display section using a segment LED for displaying an address and a reset switch 3
1 is provided. An address for each intruder detector 10b is stored in the address storage unit 73. Therefore, by identifying this address, the intruder detector 10b installed for each small area 2 can be identified.

In such a system, for example, by polling, the alarm display 30a sends a command requesting the intruder detector 10b to transmit an alarm signal to the multiplexed line L.
Upon receipt of this command, the intruder detector 10b transmits the alerting data indicating whether or not the human body is detected, its own address and the like on the multiplexing line L. The alarm indicator 30a turns on the alarm indicator lamp 4 for each small area 2 on the basis of the alarm data and the address, and also displays the address of the intruder detector that issued the alarm on the address display section. Therefore, the inspector can go to the small area 2 in which the alarm display lamp 4 is turned on and identify the intruder detector 10b in which the alarm storage indicator lamp 17 is turned on.

Further, in this embodiment, when operating such a monitoring system, it is confirmed that the last person has come out of the monitoring area, and the reset switch 31 of the alarm display 30a.
Is operated, the intruder detector 1 is displayed on the alarm indicator 30a.
0b, a reset command is sent to the intruder detector 10b. When the intruder detector 10b receives the reset command, the intruder detector 10 keeps time T1 during which no light is emitted after the alarm is issued.
The alarm storage indicator lamp 17b of b does not turn on after the elapse of the time T1 due to this resetting, and the alarm memory indicator lamp 17b of the alarm storage indicator lamp 17b of the time (T2-T
The alarm storage indicator lamp 17 of the intruder detector 10b which is blinking during 1) is turned off by this reset. Therefore, also in the second embodiment, similarly, the alarm storage indicator lamp 17 can be turned on when there is an intruder after the reset monitoring state is set.

[0036]

INDUSTRIAL APPLICABILITY As described above, the present invention is a security system including an intruder detector driven by receiving power from the outside, and an intruder for detecting a human body is detected by the intruder detector. The sensor, the alarm output circuit that outputs a warning signal to an external device when the intruder sensor detects a human body, and the intruder
When the sensor detects a human body, the first predetermined time
Note: Timer means for measuring a second predetermined time after the lapse of the first predetermined time, and lighting when the timer means measures the first predetermined time.
Without turning on and turning on or blinking during the second predetermined time,
When a warning storage indicator lamp that is controlled to turn off after a lapse of a predetermined time and a reset signal from an external device are received , the timer means is reset and
Does not turn on the alarm storage indicator after the time has elapsed,
Since it has a reset means for turning off the alarm storage indicator lamp during the predetermined time counting, when it is driven all day by the power supply from the outside, the timer means is reset by the reset signal from the external device, The alarm storage indicator that is lit or blinking goes out. Therefore, the alarm storage indicator lamp can be turned on when an intruder is detected after the monitoring state is set after the regular person leaves the room when driven all day.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing in detail the alarm holding / timer circuit of FIG.

FIG. 3 is a timing chart showing main signals of the alarm holding / timer circuit of FIG.

FIG. 4 is a timing chart showing main signals at the time of resetting the alarm holding / timer circuit of FIG.

FIG. 5 is an explanatory view showing a modification of the first embodiment.

FIG. 6 is a block diagram showing a main part of a modified example of FIG.

FIG. 7 is a block diagram showing a second embodiment.

FIG. 8 is a block diagram showing an outline of an intrusion security system.

FIG. 9 is a timing chart showing the relationship between the alarm timing of the conventional crime prevention system and the lighting timing of the alarm storage indicator lamp.

[Explanation of symbols]

4: Alarm indicator lamp 10, 10a, 10b: Intruder detector 11: Detection element 12, 62, 72: control circuit 13: Alarm display circuit 13a: Warning indicator light 14: Alarm output circuit 14a: relay contact 15: Alarm holding / timer circuit 16: Flicker circuit 17: Notification memory indicator light 30: Alarm indicator 31: Reset switch 40: transmitter 41: Communication line 42: Center 50: Infrared remote control transmitter 51: Switch 52, 59: Lighting signal generation circuit 53: Modulation circuit 54: Infrared light emitting circuit 55: infrared 56: Infrared receiver circuit 57: Amplifier circuit 58: Discrimination circuit 61, 71: Multiplex transmission unit 63: Address setting section 64: Notification memory display circuit 73: Address storage unit 151, 152: Monostable multivibrator 153: Time setting circuit 154: Initial circuit 155, 156: Inverter 157: Alarm holding circuit 158, 159, 160, 60: AND gate R1, R2, R3: resistance Rx: Variable resistance C1, C2, C3: Capacitor D1, D3: Diode

Claims (5)

(57) [Claims] 1. A security system including an intruder detector driven by being supplied with power from the outside, wherein the intruder detector includes an intruder sensor for detecting a human body, and the intruder sensor. An alarm output circuit that outputs a warning signal to an external device when a human body is detected, and a first predetermined value when the intruder sensor detects a human body.
Time, timer means for measuring a second predetermined time after the first predetermined time has elapsed, and light is turned on while the timer means measures the first predetermined time.
Without turning on or blinking during the second predetermined time period,
When the alarm storage indicator lamp is controlled to be turned off after the lapse of the second predetermined time and the reset signal from the external device is received , the timer means is reset to measure the first predetermined time. To
If so, the alarm storage indicator light is turned on after the lapse of the time.
In addition, the crime prevention system is characterized by having a reset means for turning off the alarm storage indicator during the second predetermined time period . 2. The security system according to claim 1, which is connected to the external device via a power supply line and a reporting line,
The reset signal from the external device is sent to the timer means.
A crime prevention system characterized by a momentary power interruption. 3. The security system according to claim 1 is connected to the external device via a multiplexing line on which power and data are multiplexed, and a reset signal from the external device is transmitted on the multiplexing line. A crime prevention system characterized by being a reset command sent to. 4. The security system according to claim 1, wherein the external device includes a reset switch operated when shifting from a non-monitoring state to a monitoring state.
A security system which outputs the reset signal when the reset switch is operated. 5. The crime prevention system according to claim 1 , further comprising an infrared remote control transmitter, wherein the intruder detector is provided with an infrared light receiving section, and the infrared light receiving section is provided.
When receiving an infrared signal from the infrared remote control transmitter, the alarm storage indicator lamp is turned on or blinks when the timer means is counting a predetermined time. .