JPH0479039B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a security system that manages and controls the security of a defined security area in cooperation with a remote central control center. This relates to a security system that has been improved so that it can be canceled.

Prior Art Anomaly detection means for detecting anomalies such as intruder detection, fire detection, gas leak detection, etc. in a warning area and sending out a detection signal; It is composed of an alarm device that controls warning processing such as sending out abnormal signals according to the type of security mode, and a central control center that is remotely linked to this alarm device to provide complete security for the guarded area. Security systems are already in widespread use. In such a security system, the security targets, that is, the guarded areas, range from buildings such as factories and offices to general residential buildings and special venues. Even if there are people at home, the entire house is set to alert mode, and all abnormalities are detected, displayed, and notified. Therefore, if there is an intruder from outside, an intruder abnormality will be detected immediately, but on the other hand, even if a person at home opens a window or door while maintaining alert mode, an intruder abnormality will be detected as well. Anomaly detection is performed as follows. In order to eliminate such inconveniences, operating means such as buttons or switches that temporarily stop the signal generation function are installed near each abnormality detector for detecting intruder abnormalities or in the transmitter part of the abnormality detector. However, as mentioned above, when a person at home opens a window, he or she first operates a button or switch to cancel the signal generation function, and then closes the window again. It is necessary to operate the button or switch again to regenerate the transmission function. Therefore, in the method described above that eliminates the cumbersome operation that requires two operations and the signal generation function on the anomaly detector side, an alarm device that performs security processing control functions by receiving an abnormal signal is installed at home. Since the operator cannot be involved in any actions such as opening a window, there is a possibility that security may be overlooked if the user forgets to close the window or forget to operate the transmission function.

Problems to be Solved In order to prevent security leaks as described above, it is necessary to use an appropriate system that can cancel unnecessary abnormal signal transmission, etc. while the alarm device is also involved in the actions of the person at home when set to alert mode. It is necessary to construct a security system equipped with appropriate cancellation means.

Accordingly, the present invention seeks to provide a security system with an improved configuration capable of satisfying such needs.

Solution Means and Effects According to the present invention, an alarm device includes an abnormality detection means for detecting an intruder in a guarded area and sends out an abnormality signal, a mode discrimination means for determining a security mode type of the guarded area, and In a maintenance system equipped with an alarm device and a central control center that is remotely linked, a cancel activation means is provided for activating a cancellation of an abnormality signal by the abnormality detection means, and a cancellation activation signal from the activation means is provided. and a received signal discriminator that receives an abnormal signal from the anomaly detecting means and determines the type of the signal, and a storage notification that holds the abnormal signal determined by the received signal discriminator for a certain period of time or transmits and notifies the abnormal signal. and determining whether or not an abnormal signal of intrusion has been received from the received signal determining means during a certain period of time before or after the generation of the cancel activation signal in response to the reception of the cancel activation signal of the cancel activation means. It is characterized by comprising a cancel driving means for determining the intrusion abnormality signal and generating a clear signal for clearing the intrusion abnormality signal held in the storage and notification means only a predetermined number of times when the intrusion abnormality signal is received. A security system is provided, which cancels an abnormal signal indicating an intruder abnormality within the alarm device as necessary to prevent the abnormal signal from being sent to a central control center, for example, and prevents the intruder abnormality from being sent to the home. It is possible to have someone confirm this. Furthermore, it is possible to designate a specific intrusion anomaly detection means among a large number of intrusion anomaly detection means provided within the warning area, and to cancel the intrusion anomaly detection signal a specified number of times. Hereinafter, the present invention will be explained in more detail based on the accompanying drawings.

FIG. 1 is a detailed block diagram showing the configuration of an embodiment of the security system according to the present invention, and FIG. 2 is a schematic configuration diagram of the security system.

Now, Fig. 2 shows a schematic configuration of an embodiment in which the present invention is applied to a one-way security system using wireless. An intrusion detector 1 detects intrusion anomalies when opening or breaking, an intrusion transmitter 2 converts the intrusion anomaly detection signal into a wireless signal and sends the signal, detects an intrusion anomaly in a window that is always closed or in an area that is not normally opened or closed. a 24-hour sensor 3 that detects intrusion abnormalities for 24 hours regardless of security mode; a 24-hour transmitter 4 that converts the detection signal of the 24-hour sensor 3 into a wireless signal and transmits it; A cancel activation device 5 that wirelessly transmits a cancel activation signal for canceling an intrusion abnormality signal, the above-mentioned intrusion detector 1 installed in the warning area, a 24-hour sensor 3, a cancel activation device 5, and other fire abnormalities not shown. , an alarm device 6 that performs warning processing in response to a detection signal, a recovery signal, a cancel activation signal, etc. transmitted by an abnormality detection device that detects gas leak abnormalities and other abnormalities, and a transmitter 7 coupled to this alarm device 6 , an alarm lamp drive circuit 8 using a power line transmission path, an alarm lamp 9, a buzzer circuit 10, and a central control center 11 that is remotely connected to the alarm device 6 via a transmitter 7. Note that the central control center 11 is also connected to alarm devices installed in other guarded areas to constitute other security systems.

FIG. 3 shows an example of a detailed configuration of the cancel activation device 5 provided as an improvement according to the present invention in the security system having the above-described configuration. The cancel activation device shown in FIG. 3 is a portable embodiment that is battery-driven and can be carried around within a restricted area.The cancel activation device shown in FIG. A setting section 14, a unit code creation circuit 15 formed of read logic to create a unit code for identifying that it is a cancel activation device, a non-lock type cancel switch 16, a one-shot multivibrator 17, an LED drive circuit 18, an LED 19, It is composed of a radio signal transmitter 20 and an antenna 21. When the cancel switch 16 is pushed by an operator (for example, a person residing at home in the restricted area), the cancel signal forming unit 12 generates a designation that is set for the corresponding restricted area by the house code setting unit 14. This circuit part forms a cancel activation signal created by adding the unit code of the cancel activation device created by the house code and unit code creation circuit 15 to the cancel ON signal, and is formed by an LSI element. Further, when the cancel switch 16 is pressed, the one-shot multivibrator 17 sends a cancel on signal to the cancel signal forming section 12, and also for a certain period of time (for example, 1 The LED 19 is turned on via the LED drive circuit 18 for a period of from 1 to several seconds. The dead battery detection circuit 13 cooperates with a check circuit built into the LSI of the cancel signal forming section 12 to check whether the battery has a normal potential at a specific period, and if the battery is normal, it outputs a high signal. If the voltage of the battery is below the specified voltage, a low signal is sent to the cancel signal forming section 12. Therefore, when the cancel signal forming section 12 receives a low signal indicating battery exhaustion, it adds a house code and a unit code to the low signal to form a dead battery signal, and immediately transmits the signal to the second signal via the radio signal transmitter 20 and antenna 21. The alarm device 6 shown in the figure is notified of the battery exhaustion.

As mentioned above, both the cancel activation signal and the dead battery signal have the signal form shown in FIG. 4 in which a house code and a unit code are added. By having the 01 code, the alarm device can receive and identify that the cancel activation device 5 (FIG. 2) in a predetermined warning area is cancel-on or the battery is dead. In addition, when the cancel signal forming unit 12 forms and sends a cancel activation signal or a dead battery signal in advance, it is not a single signal, but is sent several times in succession, and the alarm device 6 receives the signal due to interference or other reasons. It is preferable to take measures to prevent failure.

A signal form similar to the signal form sent out by the cancel activation device 5 consisting of the house code, unit code and cancel on code or dead battery code described above based on FIG. It is also used as the sending signal of the 24H sensor 3, and includes an intrusion abnormality signal code and a recovery signal code instead of the cancel on code. If it is a battery-powered type, it is naturally used to generate a battery-dead signal.

FIG. 5 is a block diagram showing another embodiment of the cancel activation device 5 (FIG. 2). When compared with the embodiment shown in FIG. 3, this embodiment differs in that it additionally includes a canceled unit setting section 22 connected to the cancel signal forming section 12. This canceled unit setting section 22 is formed by a dip switch or a numeric keypad, and allows specifying in advance the intrusion abnormality detector 1 (Fig. 2) whose abnormality detection signal is to be canceled within the warning area. For example, it is possible to cancel only the abnormality detection generated by the intrusion abnormality detector 1 installed in the window of the bedroom and the intrusion abnormality detector 1 installed in the hinged door of the living room, and cancel the abnormality detection generated by the intrusion abnormality detector 1 installed in the window of the bedroom.
It is also possible to specify in advance that it cannot be canceled. In other words, by incorporating a code indicating the intrusion abnormality detector 1 that can be canceled in advance into the cancel activation signal, or by setting it each time using the aforementioned dip switch or numeric keypad, the cancellation can be performed on the alarm device 6 (Fig. 2) side. It is possible to identify which intrusion anomaly detector 1 the intrusion anomaly detection signal comes from. The format of the cancel signal sent from the cancel activation device 5 of this embodiment shown in FIG. 5 is such that the display code of the canceled unit is incorporated after the unit code, as shown in FIG. 6. ing. In addition, instead of the above-mentioned method of setting the object to be canceled as a specific intrusion detector, it is possible to set a specific block (partial area) of the warning area.
If a block code is provided in advance so that it can be specified, the above-mentioned canceled unit setting section 22
It is also possible to form this in the cancelable block setting section so that the alarm device can identify blocks that can be canceled. Furthermore, the above-mentioned canceled unit setting section 22 can be used to set the number of intrusion abnormality detection signals that can be canceled as, for example, two abnormal signals that have occurred before a certain period of time from the push operation of the cancel activation device 5, or two abnormal signals that have occurred after a certain period of time. It is also possible to use it as a means to set the number of signals as a code for the two abnormal signals that occur. In such a case, if the alarm device receives three abnormal detections before or after a certain period of time, 3 When receiving the first item, a warning process can be performed so as not to cancel it.

In the above description, the cancel activation device 5
Although two embodiments have been described in which the device is configured to be portable and battery-driven, it is of course also possible to use a commercial power source instead of battery-powered to configure it to be fixedly placed within a restricted area, for example, It goes without saying that it is possible to incorporate the present invention into an embodiment that is incorporated into an alarm device 6, which will be described later.

Next, the detailed structure and operation of the alarm device 6 having a cancel function according to the present invention will be explained below with reference to FIG. 1. However, the alarm device 6 has various functions other than the cancel function according to the present invention. One of these functions is described in Utility Application No. 108867-1987 (Kokai No. 25690-1981) filed by the present applicant. Therefore, it must be understood that the detailed configuration of the alarm device shown in FIG. 1 shows the main parts and related components of the present invention.

In FIG. 1, a receiver 23 is provided to receive an abnormality detection signal, a recovery signal, a dead battery signal, and a cancel activation signal sent from the above-mentioned intrusion abnormality detector 1, 24H sensor 3, and cancel activation device 5. It is also equipped to receive signals such as fire abnormalities, gas leak abnormalities, emergency abnormalities, etc. The mode controller 24 is a means for setting the guard area to various security modes, such as a "home" mode in which the alert is released, which is mainly set when there are people home during the day, and a "home" mode, which is set mainly when there are people home at night, and a "home" mode, which is set mainly when there are people home at night. Three types of modes are mainly set: a "night mode" which is a vigilance state that is mainly set, and an "outing mode" which is a vigilance state that is mainly set when no one is home.
The circuit system of the receiver 23 includes a corresponding signal discrimination circuit 26 connected to the house code storage circuit 25, a unit code discrimination circuit 28 connected to the unit code storage circuit 27, a signal code discrimination circuit 29, and a first
Timer 30, buffer circuit 31, first LED drive circuit 32, sending circuit 33, audio output circuit 34, first
2 LED drive circuit 35, cancel drive circuit 36, etc. are connected, and the circuit series of the mode operating device 24 includes a mode discrimination circuit 37, a field mode storage circuit 3, etc.
8. A cancel signal normality determination circuit 39 is connected. The mode discrimination circuit 37 includes a first OR gate 40, a first AND gate 41, a second AND gate 42, and a third AND gate 43, and the current mode storage circuit 38 includes a first flip-flop 4.
4, a second flip-flop 45, a third flip-flop 46, and a second OR gate 47. Further, the cancel signal normality determination circuit 39 is provided with a third OR gate 48 and a fourth AND gate 49. Furthermore, the above cancel driving circuit 3
6 includes a fifth AND gate 50, a sixth AND gate 51, a second timer 52, and a rising differentiation circuit 5.
3, a falling differentiation circuit 54, a fourth flip-flop 55, a seventh AND gate 56, a clear circuit 57, a counter circuit 58, an inverter 59, and the like.

In the above configuration, the signal received by the receiver 23 has the signal form shown in FIGS. 4 and 6 as described above, and is sent to the house code storage circuit by the corresponding signal discrimination circuit 26. The house code is compared with the house code called from 25, and it is determined whether the signal is for the warning area or not. The received signal that has passed through the pertinent discrimination circuit 26 is compared with the unit code called out from the unit code storage circuit 27 by the unit code discrimination circuit 28, and is then detected by a plurality of intrusion abnormality detectors 1, cancel activation device 5, and 24H sensor. 3 (FIG. 2) etc., it is determined which unit the signal is from. The received signal that has passed through the unit code discrimination circuit 28 is subjected to a signal code discrimination circuit 29 which discriminates whether the signal code is a dead battery code, an abnormality detection code, a recovery code, a cancel on code, or the like. In this case, it is determined that the abnormal signal is generated from an abnormality detector other than the intrusion detector 1, and it is determined that the batteries of all the abnormality detectors including the intrusion abnormality detector and the cancel activation device 5 are exhausted. In this case, the determination result is sent to the sending circuit 33 via circuit a,
Furthermore, it is immediately sent from the sending circuit 33 to the management center 11 shown in FIG. In addition, when it is determined that it is an abnormality detection signal of the intrusion abnormality detector 1 through the signal code discrimination circuit 29, and when it is determined that it is a recovery signal, the signal is transmitted to the first LED through circuit b.
These signals are sent to the drive circuit 32, and the position of the intrusion anomaly detector that detected the anomaly or the intrusion anomaly detector that has been restored is displayed. On the other hand, the anomaly detection signal of the intrusion anomaly detector 1 is detected by the first timer 30 unless the alert area is set to the at-home mode where alert is released.
At the same time, the signal is sent to the buffer circuit 31 and stored for a certain period of time _T1 determined by the first timer 30. If the canceling action does not occur during the storage period of the certain time _T1 , the output circuit 33 and the audio output circuit 3 pass through the circuit c.
4. The signal is sent to the second LED drive circuit 35, and through these circuit means, the control center 11 (Fig. 2) is notified of the intrusion abnormality, and the abnormality detection is displayed with audio output, and the LED is turned on or off. An error message will be displayed.

Now, to explain how to set the security mode using the mode controller 24, the mode controller 24 can be used to select home mode (alert release), night mode (alert state with someone home), outing mode (absence alert state). ) is operated, the mode discrimination circuit 37 adds it to the operator's code confirmation condition, and the first AND gate 41 produces an output in the at-home mode, and the second AND gate 42 produces an output. The night mode occurs, and the third AND gate 43 produces an output during the going out mode. These outputs are applied to the set terminals S of the first, second, and third flip-flops 44, 45, and 46 of the current mode storage circuit 38, respectively, to store the current mode and also to change the previous mode to another mode. When the temperature rises, the corresponding flip-flops storing the previous mode are reset. In addition, when switching between the above modes, switching from night mode or out-of-home mode to home mode, and switching from home mode to night mode or out-of-home mode is permitted, but switching directly from night mode to out-of-home mode is permitted. The mode discrimination circuit 37 is designed so that switching directly from going out mode to night mode is not allowed.
The first, second, third of the current mode storage circuit 38
A mode signal is fed back from the output terminals Q ₁ , Q ₂ , Q ₃ of the flip-flops 44 , 45 , 46 . The first in mode discrimination circuit 37
The OR gate 40 is provided to determine the logical sum condition between the night mode and the outing mode described above. Also, a second OR gate 47 included in the current mode storage circuit 38 is connected to the second flip-flop 45 and the third flip-flop 46, so that a signal is applied to the second OR gate 47 in the night mode or out-of-home mode. That is, the output of the second OR gate 47 indicates a warning state common to both modes, and the output of the second OR gate 47 is sent to the signal code discrimination circuit 29 described above, and is used to determine the warning area when determining the signal code. We are adding a condition that the current mode is on alert. Of course, it goes without saying that if the output of the second OR gate 47 is zero, the current mode of the guarded area is in the state of being cleared.

On the other hand, the respective outputs of the first flip-flop 44 and the second flip-flop 45 are sent to the third OR gate 48 of the cancel signal normality determination circuit 39. That is, the third OR gate 48 produces an output in the attended state, which is a common logical condition for the at-home mode and the night mode. This third or gate 48
The output is sent to one input terminal of the fourth AND gate 49, and the cancel-on signal from the signal discrimination circuit 29 is input to the other input terminal of the fourth AND gate 49. In other words, the fourth
The output of the AND gate 49 is generated when the cancel activation device 5 is activated in a manned state.

Next, the cancel action, which is a feature of the present invention, will be explained.

The cancel action is performed to eliminate the intrusion abnormality signal by operating the cancel activation device 5 to generate a cancel activation signal as necessary. Therefore, the cancel activation signal is a signal that is generated only when the guarded area is manned. In other words,
For example, when a person at home wants to temporarily open a window when the guarded area is set to night mode, the intrusion abnormality signal caused by opening the window is canceled. Therefore, when the cancel activation device 5 of the caution area is activated in a manned state, an output is generated to the fourth AND gate 49 of the above-mentioned cancel normality determination circuit 39, and the cancel action is started. That is, the output of the fourth AND gate 49 is sent to one input terminal of each of the fifth and sixth AND gates 50 and 51, and the other input terminal of the fifth AND gate 50 is connected to the buffer circuit described above. 31
The presence or absence of an intrusion abnormality detection signal stored in the buffer circuit 31 can be input. The other input terminal of the sixth AND gate 51 is connected to the buffer circuit 31 via the inverter 59, so when the buffer circuit 31 stores an intrusion abnormality detection signal, a zero output is stored in the buffer circuit 31. When there is no signal, a signal is applied. Here, the buffer circuit 31 stores the intrusion abnormality detection signal only for a certain period of time T1 determined by the first timer ₃₀ as described above. Therefore, the fifth
The AND gate is a circuit 5 that clears the output when an intrusion abnormality is detected during the fixed time _T1 from the time the cancel activation signal is received.
The intrusion abnormality detection signal stored in the buffer circuit 31 is erased by sending a clear signal from the clear circuit 57 to the buffer circuit 31. In other words, the buffer circuit 31 prevents the intrusion abnormality signal from being sent to the circuit c.

On the other hand, when the intrusion abnormality signal is not stored in the buffer circuit 31 for a certain period of time T ₁ before the cancellation activation signal is applied, an output is generated at the sixth AND gate 51 . The output of the sixth AND gate 51 activates the second timer 52 for a certain period of time T ₂ and stops the first timer 30. When the second timer 52 is activated, the output of the rising differential circuit 53 is input to the set terminal S of the fourth flip-flop 55. Moreover, when the fixed time _T2 of the second timer 52 has elapsed, the differential circuit 5
The output of the fourth flip-flop 55 is input to the reset terminal R of the fourth flip-flop 55. That is, the fourth flip-flop 55 sends an output to one input terminal of the seventh AND gate 56 for a certain period of time _T2 determined by the second timer 52 after the cancel activation signal is received. The other input terminal of the seventh AND gate 56 is connected to the circuit so that the intrusion abnormality detection signal is inputted from the signal code discrimination circuit 29, so that the intrusion abnormality is detected during the above-mentioned fixed time _T2 . When a signal is generated and the detection signal is stored in the buffer circuit 31, the seventh AND gate 56, the count circuit 58, and the clear circuit 57
After that, the stored intrusion abnormality detection signal is deleted. In other words, the intrusion abnormality detection signal generated during the elapsed time from the cancel activation to the fixed time _T2 is subjected to the cancel action. In addition, for a certain period of time T ₂
If it is necessary to limit the number of times the intrusion abnormality detection signal generated during the period of cancellation is limited to, for example, one or two times, the number of times of control is set in advance in the count circuit 58. perform an action. Note that when a recovery signal is generated in the intrusion abnormality detector 1 or the battery is exhausted without waiting for a certain period of time _T2 after the cancel activation, the fourth flip-flop 55 transmits the recovery signal from the signal code discrimination circuit 29 to its reset terminal R. The cancel action is stopped by receiving a signal or a battery exhaustion signal. In other words, the restoration of the intrusion anomaly detector 1 means that the vigilance mode has been restored, at least in the night mode, and the canceling action is no longer necessary. In the above embodiment, the audio output circuit 34 and the second LED drive circuit 35 display the detection signal indicating the intrusion abnormality via the buffer circuit 31 as an abnormality. circuit 29
Except for sending a signal to the sending circuit 33 when an intrusion abnormality is determined in the
An error may be displayed on the 2LED drive circuit. However, in this case, when the clear circuit 57 is activated, it sends out a clear signal to turn off the display.

As is clear from the above description, according to the present invention, when the cancellation activation device is operated by a person at home in a guarded area at night when the person is at home,
This cancels the intrusion abnormality detection signal that is generated for a certain period of time before and after the cancel activation action. In other words, if you accidentally open the window and activate the anomaly detector, it is possible to cancel this, or if you consciously cancel the operation before opening the window, you can prevent intrusion by opening the window. The abnormality detection signal will no longer be notified to the management center via the transmitter, for example.

Effects of the Invention - Since the intrusion abnormality detection signal for a certain period of time before the activation of the cancel activation device can be canceled, it is possible to prevent false alarms due to operator's erroneous operation.

- It is simple and has the effect of reducing costs because one cancel activation device can cancel the intrusion abnormality detection signals of a plurality of intrusion abnormality detectors or a selected intrusion abnormality detector.

・Unlike conventional security systems, there is no need to operate a cancel activation device in order to restore the re-alert state to the restricted area; therefore, as long as the intrusion anomaly detector is restored, the re-alert state can be obtained. The intrusion anomaly detector must be restored by the person at home.
Since it can be confirmed from the LED display, there will be no forgetting to be alert, and security accuracy will be improved.

Although the present invention has been described above with respect to a wireless one-way security system, it goes without saying that the present invention is also applicable to wired or two-way security systems.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram showing the configuration of the main parts of the security system according to the present invention, FIG. 2 is a block diagram schematically showing the overall configuration of the security system, and FIG. 3 is an example of the configuration of the cancel activation device. block diagram,
FIG. 4 is a diagram showing the signal form of the cancel activation signal generated by the cancel activation device shown in FIG. 3, FIG. 5 is a block diagram showing the configuration of another embodiment of the cancel activation device, and FIG. FIG. 3 is a diagram showing a signal form of a generated cancel activation signal. 1... Intrusion abnormality detector, 5... Cancellation activation device, 6... Alarm device, 11... Management center, 2
3... Receiver, 24... Mode controller, 29...
Signal code discrimination circuit, 30...first timer, 31
. . . buffer circuit, 36 . . . cancel drive circuit, 37 . . . mode discrimination circuit, 38 .

Claims (1)

[Scope of Claims] 1. An alarm device comprising an abnormality detection means for detecting an intruder in a guarded area and transmitting an abnormal signal, and a mode discrimination means for determining a security mode type of the guarded area; A security system comprising a remotely linked central control center, comprising: cancel activation means for canceling an abnormality signal sent by the abnormality detection means; and a activation signal from the cancellation activation means and the abnormality detection. received signal discriminating means for receiving an abnormal signal from the means and discriminating the type of the signal; storage and notification means for holding the abnormal signal determined by the received signal discriminating means for a certain period of time or transmitting and notifying the intrusion abnormal signal; In response to the reception of the cancel activation signal by the cancel activation means, it is determined whether or not an abnormal signal due to an intrusion has been received from the received signal determination means during a certain period of time before or after the generation of the cancellation activation signal; and a cancel drive means for generating a clear signal for clearing the intrusion abnormality signal held in the storage notification means a predetermined number of times when the intrusion abnormality signal is received. system. 2. The security system according to claim 1, wherein the alarm device includes cancel signal normality determining means that determines whether the cancel signal is normal or not when the reception signal determining means determines that the cancel activation signal has been received. 3. The security system according to claim 1, wherein the alarm device includes a clear circuit that sends a clear signal to the storage notification means.