JP3020335B2 - Anti-theft 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 system for preventing theft in a predetermined security area, for example, an important area such as a vault, and more particularly, to the use of smoke to block the intruder's field of view. And a system for preventing threats of theft.

[0002]

2. Description of the Related Art Conventionally, a device for generating tear gas or odorous gas in a caution area has been proposed as a device for inhibiting theft. However, it is necessary to control the activation of smoking in accordance with the situation of a target area for smoking. I could not do it. Further, the possibility of starting the gas due to a malfunction and the troublesome exhaust after the gas generation due to the malfunction have not been put to practical use. Further, a security system that detects an intruder's theft activity inside a building and issues an alarm is implemented. In recent years, this security system has been required to be finely tuned in recent years as the number of security-targeted properties has expanded. For example, considering the security mode, there are an unattended alert mode and a manned alert mode depending on the presence or absence of a room. Alternatively, only a specific area can be alerted. Therefore, a fine-grained starting method is also required when starting the smoke generating device as described above.

[0003]

SUMMARY OF THE INVENTION Accordingly, a main object of the present invention is an unattended alert mode, which is an effective anti-theft method for inhibiting theft against a thief only when an intruder is detected. In providing the system.

[0004]

The present invention employs the following configuration to achieve the above object. That the penetration sensor for detecting the intrusion vandalism etc. intruder into warning area, a mode setter for switching the alert status of the warning area, the anti-theft system with a smoke device for generating smoke warning戒領region there is, alarm means for issuing an alarm
And smoke starting means for controlling the start of the smoke generating device.
And the mode setting device switches to the first alert state.
When the intrusion sensor detects in the above, the alarm means
Along with generating an alarm, the smoke starting means switches the smoke box.
Activate and switch the mode setting device to the second alert state
Alarm when the intrusion sensor detects
The means generates an alarm, but the smoke starting means is the smoke hand.
This is an anti-theft system characterized by not activating the steps .

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An anti-theft system according to the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a theft prevention system according to the present invention. The anti-theft system includes a mode setting device 10, an abnormality detector 20, an alarm device 30, a smoke start device 50, a smoke start device 60, and a start switch 70. In this embodiment, an example will be described in which the mode setting device 10 is installed outside a guard area.

The mode setting device 10 is connected to the alarm device 30 and the smoke activation device 50, and changes the alert state of the alert zone to at least the alert mode in which the alert is in an unattended state, the release mode in which the attendant is in the alert release mode, or the manned state. The three modes of the night mode, which is the alert state, are switched. The abnormality detector 20 includes, for example, a magnet sensor that detects opening and closing of a door and a window, an infrared sensor that detects blocking of infrared rays by an intruder, a passive infrared sensor that detects radiant heat of a human body, and the like. It is installed on walls, windows, etc., and performs operations such as opening and closing doors and windows, destroying walls, and detecting a human body inside the alert area.

The alarm device 30 includes a first AND gate 32,
First OR gate 36, second AND gate 37, first flip-flop 38, third AND gate 40, first inverter 31, second inverter 39, differentiating circuit 3
5, a buzzer circuit 33 and a local display device 34. The smoke activation device 50 includes a second OR gate 52, a fourth AND gate 51, a second flip-flop 53, a third
An inverter 54, a fifth AND gate 55, and a smoke starting circuit 56 are provided.

[0008] The smoke emitting device 60 is a device that emits smoke in the alarm area in response to an activation signal of the smoke activation circuit 56 or the activation switch 70. The activation switch 70 activates the smoke activation circuit 56 manually in an emergency regardless of the mode setting by the mode setting device 10. Next, the operation of the present invention will be described.

First, the case where the guard area is set to the unmanned guard mode will be described. When the last exiter exits the guard area, the abnormality detector 20 is not in an inadvertent detection state, that is, if it is an intrusion sensor, a door,
After confirming that all windows are normally closed, the person exits the security area from the final entrance (not shown).

Then, the mode setting device 10 installed outside the guard area is operated to set the switch from the guard release mode to the guard mode. By this operation setting, a signal from the mode setting device 10 is sent to the second AND gate 37 and the differentiating circuit 35 via the first OR gate 36. At the same time, a signal from the mode setting device 10 is sent to the fourth AND gate 51.

At this time, if the abnormality detector 20 is not in the careless abnormality detection state, that is, if it is in the normal state, the signal level of the abnormality detector 20 is maintained at high, and the signal of the abnormality detector 20 becomes the first signal. 1 inverter 31, 2nd inverter 3
9, the third inverter 54, and the second AND gate 37,
The signal is sent to the fourth AND gate 51. If the abnormality detector 20 enters an abnormality detection state due to some care, for example, forgetting to close a window, the signal level becomes low.
Becomes Therefore, first, a signal "1" is sent to the first AND gate 32 via the first inverter 31, so that the two input terminals of the first AND gate 32 become "1" and logically output to the output terminal. An output is generated and the buzzer circuit 33 sounds. That is, at the time of setting the mode setting device 10 to the alert mode, the presence or absence of an abnormality in the alert area is automatically checked, and the alert mode setting with the careless abnormal state remaining is instantaneously provided to the final leaver. An alert is issued so that the alert mode can be reset.

If there is no inadvertent abnormality detection state, the two input terminals of the second AND gate 37 become "1" as apparent from the above, and an output is logically output to the output terminal. At this time, since no output is generated at the output terminal of the first AND gate 32, the buzzer circuit 33 and the local display device 34 are not operated. On the other hand, if there is no careless abnormality detection state when the mode setting unit 10 sets the alert mode, a signal is applied to the set terminal S of the first flip-flop 38 and the output of the output terminal Q continues. Will be retained. The output of the first flip-flop 38 is continuously input to one input terminal of the third AND gate 40. Further, a signal is applied to the set terminal S of the second flip-flop 53, and the output of the output terminal Q is continuously held.

The output of the second flip-flop 53 is continuously input to one input terminal of a fifth AND gate 55. Next, a case will be described in which an intruder enters the guard area while the unattended guard mode is set as described above. The output of the first flip-flop 38 is continuously input to one input terminal of the third AND gate 40. The other input terminal of the third AND gate 40 is provided with a configuration in which a signal from the abnormality detector 20 is input through the second inverter 39. When detection is performed, the second
The signal applied to the third AND gate 40 via the inverter 39 becomes "1" level. Therefore, when the third AND gate 40 detects an abnormal state during the alert mode, its output terminal logically outputs an output. An alarm is generated and the alarm generation circuit 41 is activated. Therefore, the alarm generation circuit 41 sends an alarm signal to the remote monitoring device 80 via a communication line such as a telephone line.

On the other hand, a signal from the abnormality detector 20 is supplied to the other input terminal of the fifth AND gate 55 by the third inverter 5.
4 is provided, when an abnormality is detected by the abnormality detector 20 during the alert mode, the fifth AND gate 55 is input via the third inverter 54.
Becomes a "1" level, so that the fifth AND gate 55 logically generates an output at its output terminal when the abnormal condition is detected during the alert set, and activates the smoke activation circuit 56. .

The smoke activation circuit 56 activates the smoke emission device 60 and sends a signal to the alarm generation circuit 41. The alarm generation circuit 41 activates the remote monitoring device 80 via a communication line such as a telephone line. Sends a signal to the effect. The smoke generating device 60 is installed in the caution area. When a start signal is input from the smoke starting device 50, the starting device automatically ignites and emits smoke. The escaping smoke fills the alert area immediately, blocking the intruder's view. Thus, an intruder whose view is blocked cannot perform an action such as theft or destruction in the guard area.

A person who has been informed of the intrusion into the security area and who has been allowed to enter the security area in advance, that is, a tolerant, operates the activation switch 70 manually, through the smoke activation circuit 56. The smoke generating device 60 can be activated. Next, setting from the alert mode to the release mode will be described. The first visitor to the guard area operates the configured mode setting device 10 with the numeric keypad and other switches to set the mode to the release mode.

By the operation setting, the mode setting unit 10
Is applied to the reset terminal R of the first flip-flop 38 and the second flip-flop 53,
The output of each output terminal Q is stopped. Since the output of each of the first flip-flop 38 and the second flip-flop 53 is at a low level at one of the input terminals of the second AND gate 40 and the fifth AND gate 55, the signal from the abnormality detector 20 is output at the second level. Even if a signal is input to the other input terminal of the second AND gate 40 and the fifth AND gate 55, the output terminal does not output a signal.

Therefore, the alarm generation circuit 41 and the smoke activation circuit 56 do not operate. Next, the setting from the release mode to the manned and alert state, that is, the setting to the night mode will be described.
In the home security system, it is set to be in a guarded state at night, although it is manned, and depending on the guard area, guards are resident and manned at night, but guarding doors and windows etc. There are cases.

In such a manned state, even if the abnormality detector 20 detects an abnormality, the smoke generating device 60 is not activated. Mode setting device 10 when set to night mode
Is input to the second AND gate 37 via the first OR gate 36. The operations of the second AND gate 37 and the first flip-flop 38 are the same as in the case of the alert set, and if a window or the like is opened, an alarm is output.
The smoke activation circuit 56 does not activate.

A second embodiment of the anti-theft system according to the present invention will be described with reference to FIG. In FIG. 2, devices or circuit elements denoted by the same reference numerals as those in FIG. 1 are substantially the same. In this embodiment, a particularly important important area such as a vault is set inside the guard area.

In the present embodiment, the second abnormality detector 21 and the smoke starting device 50 have a holding circuit 57. The second abnormality detector 21 is installed in, for example, an important area such as a vault inside the guard area, and detects an intrusion into the important area or the presence of an intruder inside the important area. Operations such as setting of the alert mode are the same as those in FIG.

Here, when an intruder enters the guard area in the guard mode, an intrusion signal from the third AND gate 40 is applied to the alarm generating circuit 41 as described above, and the alarm is remotely monitored via the telephone line. Sent to the device. However, at this time, the output of the fifth AND gate 55 is input to and held in the holding means 57, and the smoke starting circuit has not been started. The holding means 57 holds the signal for a predetermined time, for example, 5 minutes.

When the intruder further enters the important area within the predetermined time, the second abnormality detector 21 detects the intruder,
A signal is applied to the holding means 57. The holding means 57 outputs a signal to the smoke activation circuit 56 when a signal from the abnormality detector is input while the signal from the fifth AND gate 55 is being held. The smoke activation circuit 56 causes the smoke emission device 60 to emit smoke as described above, thereby blocking the view of the intruder. In other words, in the present embodiment, smoke is limited to the important area, so that it is possible to prevent unnecessarily smoke due to malfunction of the abnormality detector 20 and to provide an effective anti-theft system for the important area. .

The abnormality detector 20 is used for detecting intrusion into the security area, and the second abnormality detector 21 is used for detecting intrusion into the important area, or the abnormality detector 20 is used as detection for intrusion into the security area. If the second abnormality detector 21 is used and used to detect the presence of an intruder in the alert area, the movement of the intruder can be determined, and the reliability of smoke generation can be increased.

A third embodiment of the anti-theft system according to the present invention will be described with reference to FIG. FIG. 3 shows a smoke generating device 60.
FIG. 9 is a block diagram of a configuration of an anti-theft system that activates the smoke generating device again and activates the smoke generating device again if the smoke generating device is inoperative. In FIG. 3, devices or circuit elements indicated by the same reference numerals as those in FIG. 1 are substantially the same.

In this embodiment, a smoke detector 90 and a smoke confirmation device 100 are provided. The smoke detector 90 is provided inside the security area, and detects smoke inside the security area by, for example, a photoelectric type or an ion type. Smoke confirmation device 100
Are the delay circuit 101, the third flip-flop 102, the sixth
An AND gate 103, a fourth inverter 104, a seventh AND gate 105, an eighth AND gate 106, and a second smoke activation circuit 107 are provided.

Next, the operation will be described. The setting operations for the alert mode, the release mode, and the night mode are the same as in the first embodiment. Here, the case where the alert mode is set will be described. When the intruder intrudes into the guard area while in the alert mode, the abnormality detector 20 detects the intruder, activates the smoke activation circuit 56 and activates the smoke generator 60 as described above. At the same time, the smoke activation signal is input to the delay circuit 101 of the smoke activation confirmation device 100 and the set terminal S of the third flip-flop 102.

Output terminal Q of third flip-flop 102
Is continued to be input to one terminal of the sixth AND gate 103. Here, when the smoke generating device 60 is normally activated by the activation signal of the smoke activation circuit 56, the smoke is emitted in the alert area. When the smoke detector 90 detects this smoke, it sends out a signal and inputs the signal to the other input terminal of the fifth AND gate 103. Here, the fifth input terminal of the fifth AND gate 103 is "1" and its output is "1". This output is input to the alarm generation circuit 41 as a smoke confirmation signal and sent to the remote monitoring device 80.

Next, a case will be described in which a smoker is not activated even if an intruder enters the guard area and the smoke activation circuit 56 is activated. The activation signal from the smoke activation circuit 56 is input to the smoke emission device 60 and the smoke emission confirmation device 10
0 is input to the set terminal S of the delay circuit 101 and the third flip-flop 102.

When a signal is input from the smoke starting circuit 56 to the delay circuit 101, the signal is input to the reset terminal R of the third flip-flop 102 with a delay of a predetermined time, for example, 60 seconds. Enter Here, if smoke does not occur due to any trouble even after 60 seconds have elapsed since the start of smoking, the smoke detector 90 naturally does not sense smoke. Therefore, the seventh AND gate 1
Since a signal of “1” level is input to the other terminal of the switch 05 via the fourth inverter 104, a signal is output from the output terminal of the seventh AND gate. This signal is input to the second smoke starting circuit 107 to start the smoke generating device 60 again.

Here, the smoke generating device 60 to be started again may be provided separately. Further, the remote monitoring device 80
When the smoke signal is not received after receiving the alarm signal, the smoke device may be directly activated via a telephone circuit via a receiving circuit (not shown). Next, when the smoke detector 90 detects smoke when no intruder enters the guard area, that is, when the smoke generating device is not activated, the eighth AND gate 10 is activated.
The output from the Q-bar terminal of the third flip-flop 102 is input to one input terminal of the sixth flip-flop 102.
Since the signal is input from the smoke detector 90 to the other input terminal of No. 6, the output of the eighth AND gate 106 becomes “1” and sends a signal to the alarm generation circuit 41, and the alarm generation circuit 41 is connected to the local display device. A fire signal is displayed and a flame signal is sent to the remote monitoring device.

In the above-described embodiment, an example has been described in which smoke detection is performed by the smoke detector. However, the present invention is not limited to this. For example, the smoke generator itself may be provided with a smoke detection unit. For example, a temperature sensor is provided inside the smoke generating device to detect heat generation at the time of smoking. Alternatively, it is detected by a circuit break that the ignition heater for starting smoke emission burns out when smoke is emitted. Next, an embodiment in which an intruder is intimidated before the smoke emitting device is activated will be described with reference to FIGS.

In FIG. 3, devices or circuit elements indicated by the same reference numerals as those in FIG. 1 are substantially the same. An occupant search sensor 110 detects whether an intruder is present in the guard area. The occupant search sensor 110 is, for example, a passive infrared sensor, an ultrasonic sensor, or the like.

Reference numeral 120 denotes a threat control device which controls a lamp and a buzzer for threatening an intruder in the guard area. The lamp 121 turns on or blinks to threaten an intruder under the control of the threat control device 120. The buzzer 122 sounds and intimidates an intruder under the control of the intimidation control device 120.

Next, the operation will be described with reference to the flowchart shown in FIG. 5. The operation until the security zone is set to the security mode is the same as that of the first embodiment. When the alert mode is set, an intruder is detected by the abnormality detector 20.
Is detected, the output of the fifth AND gate 55 is input to the threat control device 120. (Step 2) Threat control device 1
20 turns on the lamp 121. (Step 3) The intimidation control device 120 activates a timer (not shown) (step 4), and after a certain period of time measured by the timer, the occupant search sensor 110 checks whether or not there is a person in the alert area. . (Steps 5 and 6) Here, when the intruder exits the guard area by turning on the lamp 121, the state of step 2 is set.

If the intruder does not leave the caution area regardless of the intimidation caused by the lighting of the lamp 121, the intimidation control device 120 sounds the buzzer 122 (step 7) and measures a fixed time by a timer (not shown). After a lapse of time, the occupant search sensor 110 is operated again to search for the occupant. (Steps 8, 9, 10) When the intruder leaves the caution area by sounding the buzzer 122, the intruder returns to the state of Step 2 and suspends until the release mode or the night mode is set. Reset when set to release mode or night mode.

If the intruder is still in the guard area, the smoke starting circuit 56 is started (step 11).
The smoke generation circuit 56 starts the smoke generation device 60 and inputs a smoke generation signal to the alarm generation circuit 41. In the present embodiment, the abnormality detector 20 and the occupant search sensor 110 have been described as separate members, but they may be the same sensor.

Next, an embodiment in which a release device is provided inside the guard area will be described with reference to FIG. In FIG. 6, devices or circuit elements indicated by the same reference numerals as those in FIG. 1 are substantially the same. Reference numeral 130 denotes a release device provided inside the guard area, which is constituted by, for example, a magnetic card reader, a ten-key input device, or the like, and performs a release check by performing an operator qualification check.

Reference numerals 131 and 132 denote release circuits which hold the outputs of the third AND gate 40 and the fifth AND gate 55 for a certain period of time and generate an alarm and start smoking when a release signal is input from the release unit 130 within the predetermined period. Cancel Hereinafter, the operation will be described. The setting of the alert mode of the alert area is the same as in the first embodiment.

Here, if the user enters the caution zone without setting the release mode with the mode setting device 10 while the caution mode is set, the abnormality is detected by the abnormality detector 20, and the third AND is performed in the same manner as described above. Output from the gate 40 and the fifth AND gate 55. The output of the third AND gate 40 is input to the release circuit 131 and also to the buzzer circuit 33. The output of the fifth AND gate 55 is supplied to the release circuit 132.
Is input to

Here, the release circuits 131 and 132 hold the input signal for a predetermined time, for example, 30 seconds. Here, since the buzzer circuit 33 performs a buzzer sound, the visitor notices that he or she has forgotten to operate the mode setting device 10, and the release device 13
Perform a release operation at 0. The release operation is performed, for example, by operating a magnetic card registered in advance in a magnetic card reader.

As described above, the qualification of the person who can operate the release device 130 is checked, and the release operation cannot be performed by an intruder. If the visitor performs the release operation within the predetermined time, the release circuits 131 and 132
Cancels the pending signal. Therefore, it is possible to prevent the generation of an alarm and the generation of smoke for a person who has accidentally entered the guard area.

If an intruder who does not have a qualification enters, the release device 130 cannot be released, of course, so that after a predetermined time, smoke is activated and an alarm is issued on a communication line such as a telephone line. To the remote monitoring device 80 via Alternatively, the alarm generating circuit 41 may be provided with a receiving unit and a smoke starting unit, and the remote monitoring unit 80 may start the smoking unit by remote starting.

Furthermore, the smoke generating device is installed inside the guard area. However, the present invention is not limited to this. A smoke generating device is provided outside the warning area, and smoke is introduced into the warning area using a pipe or the like, for example, on the floor or wall. You may make it. Note that a plurality of introduction points may be provided according to the amount of smoke generated.

[0045]

As described above, even if an intruder enters the guard area, smoke is automatically emitted and the view is interrupted, so that the intruder cannot perform theft. In addition, the anti-theft system can also be applied to an alert target in which an alert mode is set in a manned state with a tolerant inside,
Since smoke is not emitted when the person is manned, it is possible to prevent the permitted person from being unable to act due to the smoke.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first specific example of a smoke generating system according to the present invention.

FIG. 2 is a block diagram showing a second specific example of the smoke generating system according to the present invention.

FIG. 3 is a block diagram showing a third specific example of the smoke generating system according to the present invention.

FIG. 4 is a block diagram showing a fourth specific example of the smoke generating system according to the present invention.

FIG. 5 is a view showing a flowchart in a case where a fourth specific example of the smoke generation system according to the present invention is executed.

FIG. 6 is a block diagram showing a fifth specific example of the smoke generating system according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Mode setting device 20 ... Abnormality detector 30 ... Alarm device 50 ... Smoke starter 60 ... Smoke starter 70 ... Starter switch 80 ... Remote monitoring device 120 ... Threat control device

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G08B 15/02

Claims (5)

(57) [Claims] 1. An intrusion sensor for detecting an intruder's invasion and destruction of a security area, and a security state of the security area is switched.
A mode setter for obtaining, a theft prevention system having a smoke device for generating smoke warning戒領region, and alarm means for sounding an alarm, to control the activation of the smoke device
Smoke starting means, wherein the mode setting device has a first alarm.
The intrusion sensor has detected while switching to the commandment state
When the alarm means generates an alarm,
Actuating means activates the smoke box, and the mode setting device
The intrusion sensor detects in the state of switching to the alert state 2
The alarm means generates an alarm, but the smoke
An anti-theft system, wherein the activation means does not activate the smoke generating means . 2. An when the intrusion sensor detects an intrusion
A timer for starting a fixed time , and a releasing device installed in the alert area, wherein the smoke activation unit measures the fixed time by the timer.
The calling when the release operation by the release means is not received by the
The anti-theft system according to claim 1, wherein the smoke device is activated . 3. An alarming means for sending an abnormal signal to a remote security center and a confirming means for confirming activation of the smoke generating device, wherein the alarming means is provided by the confirming means .
Check the activation of the smoke apparatus, 請 Motomeko 1 anti-theft system according you sending an abnormality signal to a security center by the notification means. 4. From the smoke starting means to the smoke generating device.
Has a timing means for timing a certain time by the start signal of ,
The anti-theft system according to claim 3 , wherein the smoke activation unit sends an activation signal to the smoke emitting device again when the checking unit does not detect the smoke emission of the smoke emitting device during the time counting by the timing unit. 5. A threatening device for threatening an intruder, a threatening control means for activating the threatening means when the intrusion sensor detects an intruder, and a occupant search for detecting an intruder in a guard area. 2. The anti-theft system according to claim 1, further comprising a detector, wherein the activation control means emits smoke when the in-room occupant search detector confirms the presence of the intruder after the intimidating device is activated.