JPH0757173A - Crime preventive reporting device - Google Patents

Abstract

PURPOSE:To detect a fault of a heat-ray sensor or abnormality of a visual field and report it to a specific place by an alarm system which uses the heat- ray sensor. CONSTITUTION:The crime preventive reporting device 1 is equipped with a state monitoring means 10, which is so set as to monitor the state of a guard loop L2 formed of plural heat-ray sensors SS. Then the state monitoring means 10 monitors a report signal from the guard loop L2 at all times and if the means receives a report signal from the guard loop L2 within a set time after the reception of the last report signal, the means monitors whether or not there is a report signal again within the set time from said point of time, but when the next report signal is not received within the set time from the last report signal, it is judged that the guard loop L2 has no abnormality and information indicating that is sent to a central monitor device 2 through a pay telephone line 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects the presence or absence of an abnormality in a monitoring area based on signals from various sensors, and when an abnormality occurs, a security company or the like through a predetermined line such as a public telephone line. The present invention relates to a crime prevention reporting device that reports that an abnormal condition has occurred at a predetermined location.

[0002]

2. Description of the Related Art Conventionally, a crime prevention warning system has been known as a security system for an office building or a general home. FIG. 2 shows a schematic configuration example thereof.

The crime prevention notification device 1 is arranged at an appropriate place in a place to be guarded, such as an office building or a general household, and is composed of a microprocessor and its peripheral circuits. Then, various sensors S such as a heat ray sensor, a beam sensor, a smoke sensor, a heat sensor, a window sensor, etc.
Are connected. Here, the heat ray sensor detects an object that radiates far infrared rays by a pyroelectric element, and the beam sensor has a light projector that projects infrared light and a light receiver that detects infrared light projected from the light projector face each other. And are known as sensors for detecting an intruder. The window sensor is a sensor that detects that the window is broken.

When receiving the alarm signal from the sensor S, the security alarm device 1 determines that an abnormal condition has occurred, sounds a security bell or a security siren, and sends information about the alarm signal to the public telephone. Via the line 3, the central monitoring device 2 arranged at a predetermined place such as a security company is notified. The alarm signal is a signal output when the sensor S detects that the sensor S is in a predetermined state. Specifically, in the heat ray sensor, when an object radiating far infrared rays is detected. It is output when the beam sensor detects that the amount of light received by the light receiver is below or below a predetermined amount, and when the smoke sensor exceeds a predetermined amount of smoke. It is output, when the temperature exceeds a predetermined temperature in the heat sensor, it is output,
In the window sensor, it is output when the window is broken. The same applies to the other sensors.

Therefore, the crime prevention notification device 1 notifies the central monitoring device 2 of the presence of an intruder when it receives the alarm signal from the heat ray sensor, and fires when it receives the alarm signal from the heat sensor. Is reported. It should be noted that although these notifications are made based on a predetermined information transmission method, they are not essential in the present invention, and therefore description thereof will be omitted. Further, although the crime prevention notification device 1 usually has a function of notifying the central monitoring device 2 not only when an abnormal state occurs but also at a predetermined time or at a predetermined time, it is usual. Since this is also not an essential matter in the present invention, description thereof is omitted, and here, the central monitoring device 2 is notified only when an abnormal state occurs.

The crime prevention notification device 1 can set two states, a warning state and a warning released state, for each type of sensor. For example, since it is necessary to constantly monitor the occurrence of a fire, the crime prevention notification device 1 is set to a state in which it can always accept a warning signal from a smoke sensor or a heat sensor. This is the alert state.

On the other hand, when the crime prevention reporting device 1 is set to constantly receive a warning signal from a sensor for detecting an intruder such as a heat ray sensor or a beam sensor, it can be used during daytime when many people come and go. Every time a person goes in and out, the crime prevention bell rings, and further, the central monitoring device 2 is informed that there is an intruder, which causes inconvenience.

Therefore, the crime prevention reporting device 1 responds to a warning signal from a specific sensor S, for example, a warning signal from a sensor for detecting an intruder such as a heat ray sensor or a beam sensor.
A warning state, that is, a state in which a warning signal can be accepted, and a warning cancellation state, that is, a state in which a warning signal cannot be accepted, can be arbitrarily set.

It should be noted that the above-mentioned alert state and alert release state are set in the crime prevention reporting device 1, and each sensor operates independently of the power supply as long as power is supplied. That is, assuming that a heat ray sensor is connected to the crime prevention notification device 1 now, the heat ray sensor is always operating, and therefore, when a person moves, the heat ray sensor detects it and outputs a warning signal. However, at this time, the crime prevention notification device 1 ignores this alarm signal when it is set to the alarm release state, and validates the alarm signal only when it is in the alarm state and makes it to the central monitoring device 2. Make a report.

[0010]

By the way, the heat ray sensor is installed at a high place such as the ceiling 4 as shown in FIG. 3A, and its field of view R is directed to an area where an intruder should be watched. It is normal. In FIG. 3, S _S indicates a heat ray sensor and 5 indicates a floor.

However, it turned out that there are cases where an intruder cannot be detected against the intention. For example, in an office or the like, the heat ray sensor S
Partitions and lockers may be placed so as to block the view of _S. FIG. 3B is a diagram showing that state, but an object 6 such as a partition or a rocker is arranged so as to block the visual field R of the heat ray sensor S _S.

It is an abnormal state that there is an object that obstructs the field of view R of the heat ray sensor S _S , but in such a case, even when the heat ray sensor S _S is operating normally, Even if a person moves within the shaded area of the field of view R in FIG. 3B, the field of view R is blocked by the heat ray sensor S _S.
You will not be able to detect it.

In addition, an intruder can be detected even when the visual field of the heat ray sensor S _S is erroneously set or when the visual field of the heat ray sensor S _S is intentionally changed so as to be out of the area to be monitored. Of course it will disappear.

As described above, with respect to the heat ray sensor, the heat ray sensor itself is normally operating, but an intruder cannot be detected because the field of view is abnormal, and therefore, even if there is an intruder, the heat ray sensor emits the heat. It was found that there is a case where the crime prevention reporting device 1 does not output the report signal and determines that no abnormality has occurred.

Although the above description relates to the heat ray sensor, similar problems may occur with other sensors.

The present invention is to solve the above-mentioned problems, and is capable of detecting any abnormality including abnormality in the visual field of a predetermined sensor such as a heat ray sensor when it is detected. It is intended to provide a reporting device.

[0017]

In order to achieve the above object, the crime prevention reporting apparatus of the present invention detects the presence / absence of an abnormality in a surveillance area based on signals from various sensors, and an abnormality has occurred. In this case, in a crime prevention reporting device that reports that an abnormal condition has occurred at a predetermined location through a predetermined line, monitor the presence or absence of a warning signal from a predetermined sensor indicating the occurrence of an abnormal condition, and within the predetermined time When the alarm signal is not received, it is characterized by comprising state monitoring means for notifying the predetermined location of information indicating that an abnormality has occurred in the sensor.

[0018]

Various sensors are connected to the crime prevention alarming device of the present invention, and when an alarm signal is received from these sensors, a notification indicating that an abnormal state has occurred at a predetermined place through a predetermined line is given. I do.

Further, the crime prevention reporting device is provided with a state monitoring means. This state monitoring means constantly monitors the presence or absence of a warning signal indicating the occurrence of an abnormal state from a predetermined sensor, and when the warning signal is not received within a preset predetermined time, the sensor concerned is detected. It is judged that there is an abnormality in the and the fact is notified to a predetermined place such as a security company.

As a result, when some abnormality occurs in the sensor, such as when the field of view of the sensor is blocked and the sensor does not function effectively, or when the sensor is out of order. The crime prevention reporting device can detect it, and the abnormal condition will be reported to a predetermined place.

[0021]

Embodiments will be described below with reference to the drawings.
FIG. 1 is a diagram showing the configuration of an example of a security alarm system using a security notification device according to the present invention, in which 1 is a security notification device, 2 is a central monitoring device, 3 is a public telephone line, and 10 is a public telephone line.
Is a status monitoring means, 11 is a threatening device, T ₁ , T ₂ , T ₃ are input terminals, L ₁ , L ₂ , L ₃ are warning loops, S _S is a heat ray sensor, and S _N is a sensor other than the heat ray sensor. . In addition,
It is assumed that the heat ray sensor S _S and the other sensors S _N are always operating as long as the power is turned on.

In FIG. 1, the crime prevention notification device 1 is composed of a microprocessor and its peripheral circuits, and is arranged at an appropriate place in a place to be guarded such as an office building or a general household. In the figure, three input terminals T ₁ , T ₂ and T ₃ are provided.

[0023] In figure, the input terminal T ₁ is connected vigilance loop L _1, to the input terminal T ₂ is connected vigilance loop L _2, to the input terminal T ₃ is connected to a warning loop L ₃ . A plurality of sensors S _N other than the heat ray sensor are connected to the alert loop L ₁ , a plurality of heat ray sensors S _S are connected to the alert loop L ₂ , and the alert loop L ₃ is one heat ray sensor. It is formed of S _S. Also,
In FIG. 1, it is assumed that the heat ray sensor S _S forming the warning loop L ₂ is installed in a place such as an office where people come and go relatively frequently, and the heat ray sensor S _S forming the warning loop L ₃ is set. Shall be installed in a place such as a warehouse where few people come and go.

Further, the crime prevention reporting device 1 includes a public telephone line 3
Is connected to a central monitoring device 2 arranged at a predetermined location such as a security company. And the crime prevention reporting device 1
When a warning signal is received from a warning loop that is set to a warning state, the threatening device 11 including a crime prevention bell is operated, and information regarding the warning signal is transmitted via the public telephone line 3 to the center. Notify the monitoring device 2.

Although the above operation is the same as that of the conventional crime prevention notification apparatus, the crime prevention notification apparatus shown in FIG. 1 performs the following operation in addition to the conventional operation.

The crime prevention notification device 1 is provided with a state monitoring means 10. This state monitoring means 10 is for determining whether or not an abnormality has occurred in the sensor connected to the designated guard loop, and in FIG. 1, it is set so as to monitor the state of the guard loop L _2. There is. Specifically, the state monitoring means 10 constantly monitors the presence / absence of an alarm signal from the alarm loop L ₂ that has been set, regardless of whether the alarm signal is in the alarm state or the alarm release state, and receives the previous alarm signal. If the alarm signal is not received until a predetermined time set in advance (hereinafter, this predetermined time is referred to as a set time) has elapsed, the warning loop L ₂ when the set time has elapsed
To the central monitoring device 2 via the public telephone line 3 indicating that some abnormality has occurred.

Here, the length of the set time is arbitrary,
For example, in an office or the like, it is possible that no person will move for a few minutes, so if a short time of a few minutes is set, inconvenience may occur. Therefore, in practice, this set time is set to 30 by a day by an appropriate setting means (not shown in FIG. 1) such as a numeric keypad or a DIP switch.
It should be possible to set up to about a day.

Further, which alarm loop state is to be monitored can be arbitrarily set by the above-mentioned appropriate setting means. Then, which alarm loop to actually monitor is selected by selecting an alarm loop having a sensor that will output the alarm signal at least once within the set time.

Considering, for example, a heat ray sensor installed in an office, people move relatively frequently in the office, and normally, an alarm signal is hardly output even once a day. Unthinkable. Conversely, if the heat ray sensor installed in the office does not output the alarm signal even once a day, it means that the heat ray sensor has failed or is operating normally. This means that an abnormality in the visual field, such as the visual field being obstructed by some object, may occur. Therefore, it suffices to set a warning loop including sensors installed at such locations.

On the other hand, for example, when the state monitoring means 10 is also set with a caution loop regarding a heat ray sensor installed in a warehouse or the like where people are rarely in and out, the heat ray sensor is also normal and its field of view is It is conceivable that, although there is no abnormality, the state monitoring means 10 determines that an abnormality has occurred in the warning loop and notifies the central monitoring device 2 of the abnormality. Therefore, it is not desirable to set the status monitoring means 10 for the warning loop in which the alarm signal may not be output even once within the set time.

In FIG. 1, even if the warning loop is formed by the same heat ray sensor S _S , the warning loop L ₂ is set in the state monitoring means 10 and the warning loop L ₃ is not set in the state monitoring means 10. Is due to the above reasons.

Now, the operation in the case where 1 day is set as the set time in the configuration of FIG. 1 will be specifically described.

The state monitoring means 10 is set to constantly monitor the state regardless of whether the alarm loop L ₂ is set to the alarm state or the alarm release state in the crime prevention notification device 1. The alarm signal from the alarm loop L ₂ is monitored. When the warning signal from the warning loop L ₂ is received, it is monitored whether or not there is a warning signal within one day from that time point, and if the warning signal is received within one day, the Whether or not there is an alarm signal within one day from the time point again, but if the next alarm signal is not received within one day from the previous alarm signal, the warning loop L _{2 is} entered. Judges that an abnormality has occurred and notifies the central monitoring device 2 of the information through the public telephone line 3.

Therefore, since the central monitoring device 2 side can clearly recognize which alarm loop has an abnormality, maintenance can be performed efficiently in a short time.

By the way, it is known that there are two types of heat ray sensors S _S. One has a function of periodically communicating with the crime prevention notification device 1 by a predetermined communication method such as packet communication, and when a movement of a person is detected, a notification signal is notified to the crime prevention notification device 1 by the communication. The other type is a type that does not have a function of communicating with the crime prevention reporting device 1 and only outputs a warning signal when it detects that a person has moved.

When the heat ray sensor S _S forming the warning loop L ₂ of FIG. 1 is the former type, the state monitoring means 10 causes each of the heat ray sensors S _S forming the warning loop L ₂ to be one by one. Since it is possible to monitor the status of the heat ray sensor S that does not output a warning signal within one day
If there is _S can be reported to the central monitoring apparatus 2 which hot wire sensor S _S is to identify whether the abnormal.

However, when the heat ray sensor S _S forming the warning loop L ₂ of FIG. 1 is of the latter type, the state monitoring means 10 causes each of the heat ray sensors S _S forming the warning loop L ₂ to be one by one. Since it is not possible to monitor the state of one of the heat ray sensors, even if there is a heat ray sensor in the state shown in FIG. 3B in this warning loop L ₂ , the other heat ray sensors are normal and their field of view is If it is normal, the heat ray sensor outputs a warning signal, and therefore the state monitoring means 10 receives the warning signal from the warning loop L ₂ , so that the state monitoring means 10 receives the warning loop L _2. All of the heat ray sensors S _S forming the above-mentioned are judged to be normal.

Therefore, in the case of using the latter type of heat ray sensor, when it is desired to monitor the state of each heat ray sensor, it is necessary to form one warning loop by one heat ray sensor.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made. For example, although the warning loop formed by the heat ray sensor S _S is monitored in the above embodiment, it is naturally possible to monitor the warning loop formed by another type of sensor.

Further, in the above embodiment, only one crime prevention notification device is connected to the central monitoring device 10,
Of course, it is also possible to connect a plurality of security reporting devices.

[0041]

As is apparent from the above description, according to the present invention, it is possible to detect a sensor that has failed, or a sensor that has not failed but has an abnormality in its field of view, and its information. Can be reported to the central monitoring device.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an exemplary embodiment of the present invention.

FIG. 2 is a diagram showing a schematic configuration example of a conventional crime prevention alarm system.

FIG. 3 is a diagram for explaining the problem of the present invention.

[Explanation of symbols]

1 ... security warning apparatus, 2 ... central monitoring unit, 3 ... public telephone line, 10 ... status monitoring unit, 11 ... intimidating device, T _1, T
₂ , T ₃ ... Input terminal, L ₁ , L ₂ , L ₃ ... Warning loop,
S _S ... Heat ray sensor, S _N ... Sensors other than heat ray sensor.

Claims (1)

[Claims] 1. The presence or absence of an abnormality in the monitoring area is detected based on signals from various sensors, and when the abnormality occurs, a notification that an abnormal state has occurred at a predetermined location through a predetermined line is sent. In the crime prevention reporting device, the presence of a warning signal from a specified sensor indicating the occurrence of an abnormal condition is monitored, and if the warning signal is not received within the specified time, then the sensor is abnormal. A crime prevention notification device, comprising: a state monitoring means for reporting information indicating the information to the predetermined location.