JPH07193652A - Burglar preventing notification equipment - Google Patents

Abstract

PURPOSE:To allow a center equipment side to detect occurrence of a fault even when an intruder comes while the burglar preventing notification equipment and a center equipment are connected by a general subscriber telephone line and a phone call comes to said burglar preventing notification equipment even in the case of a guarded state. CONSTITUTION:When a phone call comes in the guarded state, when a handset of a telephone set 16 is not hooked off even after lapse of a prescribed time, a control section 14 opens a switch 15 and does not superimpose a supervisory signal for a broken wire detection service outputted from a supervisory signal oscillator 5 on a signal of a telephone line 3. Thus, a nearby exchange discriminates it that said telephone line 3 is broken and informs it to a prescribed telephone number of a center.

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 surveillance area based on signals from various sensors, and when an abnormality occurs, a predetermined location of a security company or the like through a general subscriber telephone line. The present invention relates to a crime prevention reporting device that reports that an abnormal condition has occurred in the.

[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. 4 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 home. And a heat ray sensor, a beam sensor,
Various sensors S such as a glass breakage sensor are connected. Here, the heat ray sensor detects an object that radiates far infrared rays by a pyroelectric element, and the beam sensor is
A projector that projects infrared rays and a photodetector that detects infrared rays projected from the projector are arranged to face each other, and both are known as sensors for detecting an intruder. The glass breakage sensor is a sensor that detects that the window glass has been broken. These sensors S are always operating.

By the way, in the security system,
There are two states, an alert state and an alert release state. Normally, when there is movement of a person during the daytime, the alert is released, and in this state an abnormality occurs even if the sensor S outputs a warning signal. Although it is not determined that the crime prevention alarm device 1 is in an alert state when it becomes unattended at night or the like, and the sensor S outputs a warning signal at this time, the crime prevention notification device 1 determines that an abnormality has occurred and a crime prevention bell (not shown). And crime prevention siren (not shown)
In addition to ringing the alarm, information about the alarm signal is sent via the line 3 to indicate what kind of abnormality has occurred in the center device 2 arranged at a predetermined location (hereinafter referred to as the center) of a security company or the like. To do.

The alarm signal is a signal output when the sensor S detects that the sensor S is in a predetermined state.
Specifically, the heat ray sensor outputs when a moving object that radiates far infrared rays is detected, and the beam sensor detects that the amount of light received by the light receiver is below or below a predetermined amount. It is output when the window glass is broken in the glass breakage sensor. The same applies to the other sensors.

With this, it is possible to know what kind of abnormality has occurred in which place on the side of the center device 2. The notification to the center device 2 is performed based on a predetermined information transmission method.

In addition, the crime prevention reporting device 1 notifies the center device 2 of the occurrence of an abnormal situation when an abnormality occurs, or reports that the alert state has been entered or the alert has been released. It is possible to use a unidirectional operation that only sends predetermined information to the center apparatus 2, or a bidirectional operation that sends and receives data to and from the center apparatus 2. The user can set the directional operation or the bidirectional operation with a dip switch or the like. As for the bidirectional operation, the center device 2 issues an instruction to the crime prevention notification device 1 to transmit the information that it currently has, and the crime prevention notification device 1 transmits to the center device 2 the information accumulated accordingly. There is an operation of transmitting, or an operation of setting the alarm release / alarm release state of the crime prevention notification device 1 from the side of the center device 2.

In the past, a dedicated line was used as the line 3, but recently, a general subscriber telephone line (hereinafter simply referred to as a telephone line) has begun to be used as the line 3, and in this case, crime prevention is required. A disconnection detection service is provided for the purpose of ensuring reliability as a reporting device.

The disconnection detection service detects whether or not the telephone line to which the crime prevention reporting device is connected is disconnected, and when a disconnection is detected, the telephone number registered in advance is automatically detected. This is a service for notifying that a wire has been disconnected by dialing, and the outline thereof will be described below with reference to FIG.

As shown in FIG. 5, the crime prevention reporting device 1 is provided with a supervisory signal oscillator 5. The supervisory signal oscillator 5 constantly outputs a predetermined supervisory signal, and the supervisory signal output from the supervisory signal oscillator 5 is superimposed on the telephone line 3. The current monitoring signal is 7.8125.
A continuous wave of kHz is used.

Further, the nearest exchange 6 is provided with a supervisory signal monitor 7. The supervisory signal monitoring unit 7 detects the presence or absence of a supervisory signal on the telephone line 3, and when the supervisory signal cannot be detected, determines that the telephone line is disconnected,
The telephone number of the center registered in advance in the exchange 8 of the exchange 6 is automatically dialed to notify that a disconnection has occurred.

By performing the above operation, when the telephone line 3 is disconnected, it can be confirmed that the center side is disconnected.

[0013]

However, when a general subscriber telephone line is used, since the telephone number of the crime prevention reporting device 1 can be accessed by an unspecified large number, the crime prevention reporting device 1 is alert. Even if there is an intruder in the state, there is a problem that the crime prevention notification device 1 cannot notify the center device 2 of the occurrence of an abnormality if a call is made at that time.

The present invention is to solve the above-mentioned problems. In a crime prevention notification device for making a notification to a center device using a general subscriber telephone line, an intruder is present when the crime prevention notification device is in a warning state. In this case, it is an object of the present invention to provide a crime prevention notification device capable of detecting the occurrence of an abnormality on the side of the center device even if a call is made at that time.

[0015]

In order to achieve the above-mentioned object, the crime prevention reporting apparatus according to claim 1 is provided with various sensors, and in the alert state, an abnormality is generated based on signals from these sensors. In the case of a crime prevention reporting device that, if detected, reports the occurrence of an abnormality to the center device via the general subscriber telephone line, a supervisory signal oscillator that outputs a supervisory signal for disconnection detection on the general subscriber telephone line, and in the alert state When the ringer signal is continuously detected for a preset time, a control means for stopping the output of the supervisory signal output from the supervisory signal oscillator onto the general subscriber telephone line is provided.

In addition, the crime prevention reporting apparatus according to the second aspect is provided with various sensors, and when an abnormality is detected based on signals from these sensors in the alert state, the center is sent via the general subscriber telephone line. In a crime prevention reporting device that reports abnormalities to the device, a supervisory signal oscillator that outputs a supervisory signal for disconnection detection to the general subscriber telephone line, and a ringer signal continuously detected in the alert state for a preset time If it is, it is judged whether or not the telephone is from the center equipment. If it is not from the center equipment, the supervisory signal output from the supervisory signal oscillator is output to the general subscriber telephone line. And a control means for stopping.

[0017]

The operation and effect of the invention of the crime prevention reporting apparatus according to claim 1 will be described as follows.

In this crime prevention reporting device, one-way operation is set. Then, the control means determines that an abnormal state has occurred when a call is received in the alert state and the ringer signal continues for a predetermined time, and sends the supervisory signal from the supervisory signal oscillator to the general subscriber telephone line. Stop outputting.

As a result, the exchange station closest to the crime prevention notification device determines that the line of the crime prevention notification device has been disconnected. As a result, the telephone number registered in the exchange is notified that a disconnection has occurred, so that the center side can know that an abnormality has occurred.

The operation of the crime prevention reporting device and the effect of the invention will be described below.

In this crime prevention reporting device, bidirectional operation is set. Then, the control means, when a call is received in the alert state, determines whether the call is from the center side or from another person,
If the telephone is not from the center device, it is determined that an abnormal state has occurred, and the output of the supervisory signal from the supervisory signal oscillator to the general subscriber telephone line is stopped.

As a result, the exchange station closest to the crime prevention notification device determines that the line of the crime prevention notification device has been disconnected. As a result, the telephone number registered in the exchange is notified that a disconnection has occurred, so that the center side can know that an abnormality has occurred.

[0023]

Embodiments will be described below with reference to the drawings.
FIG. 1 is a diagram showing the configuration of an embodiment of a crime prevention notification device according to the present invention, in which 10 is a line input unit, 11 is a line closing unit, 12 is a data input / output unit, and 13 is a ringer detection unit. 1
4 is a control unit, 15 is a switch (hereinafter referred to as SW), 1
6 indicates a telephone. The same components as those shown in FIGS. 4 and 5 are designated by the same reference numerals.

The line input section 10 electrically connects the crime prevention reporting device and the telephone line 3. Circuit closing part 1
Reference numeral 1 is for selectively switching and connecting either the telephone 16 or the data input / output unit 12 to the telephone line 3 based on a control signal from the control unit 14, and can be constituted by a relay. It should be noted that the telephone 16
Is connected to the telephone line 3.

When the data input / output unit 12 transmits some data from the crime prevention notification device to the center device (not shown in FIG. 1) including the notification of abnormality occurrence,
The data to be transmitted provided from the control unit 14 is converted into a form that can be transmitted by the telephone line 3, and is transmitted to the telephone line 3.
On the contrary, when receiving data from the center device, the received data is converted into a predetermined form and transferred to the control unit 14, which is constituted by a modem or the like.

The ringer detection unit 13 notifies the control unit 14 of the state of the telephone line 3, and when the ringer signal is detected, the ringer detection signal indicating that the control unit 14 has detected the ringer signal. To the control unit 14,
Further, by detecting the potential difference between the two lines of the telephone line 3, when the telephone line 3 is closed, a signal indicating that fact is sent to the control unit 14, and when the telephone line 3 is released. Notifies the control unit 14 of a signal to that effect.

The control unit 14 centrally manages the operation of the crime prevention notification device, and is composed of a microprocessor and its peripheral circuits. Although various sensors are connected to the control unit 14, they are omitted in FIG.

The SW 15 is normally in the closed state, and therefore the supervisory signal output from the supervisory signal oscillator 5 is superimposed on the telephone line 3, but when instructed by the control unit 14, the SW 15 is in the open state. become. In this case, the supervisory signal output from the supervisory signal oscillator 5 is not superimposed on the telephone line 3.

Next, the operation of the crime prevention reporting apparatus shown in FIG. 1 will be described. First, the case where the control unit 14 is set to one-way operation is as follows.

When the crime prevention reporting device is in the warning release state, the following is done. When the telephone number of the crime prevention notification device is dialed, the bell of the telephone 16 rings, so that the user can talk with the other party by picking up the handset of the telephone 16. At this time, a ringer detection signal is output from the ringer detection unit 13 to the control unit 14, but in this case, the control unit 14
It is arbitrary what kind of operation is performed. For example, at this time, since the alert is released, it is not necessary to notify the center device. Therefore, when a call is received, it is determined that it is an errand for the telephone 16, and the control unit 14 is made to perform any processing. It is also possible not to do so, or if it is determined that the telephone cannot be picked up after a predetermined time has elapsed since a call was received by the signal from the ringer detection unit 13, it is determined to be an abnormal state. Then, it is possible to open the telephone line 3. In order to open the telephone line 3, the line closing unit 11 may be temporarily switched from the telephone 16 side to the data input / output unit 14 side and then to the telephone 16 side again.

Next, the operation in the alert state will be described. In the alert state, when the control unit 14 receives a warning signal from a sensor (not shown), the control unit 14 informs the center device of what kind of abnormal situation has occurred at which place (hereinafter, this will be simply referred to as an abnormal condition). It is called to report the occurrence of the situation). At this time, the control unit 14 causes the line closing unit 11 to
Is switched to the data input / output unit 12, the data to be reported is generated and transferred to the data input / output unit 12, and the telephone number of the center device is dialed.

Further, when the ringer detection signal from the ringer detection unit 13 detects that a call is received while in the alert state, an abnormal situation occurs in the center device even if a warning signal is received from the sensor at this time. However, since the control unit 14 determines that an abnormal state has occurred,
When the handset of the telephone 16 is picked up within a predetermined time set in advance, the control unit 14 does not perform any processing and waits for the handset to be placed. This is because the phone may be an urgent matter.

However, when it is detected by the signal from the ringer detection unit 13 that the predetermined time has elapsed without picking up the receiver, the control unit 14 opens the SW 15. As a result, the supervisory signal from the supervisory signal oscillator 5 is transmitted to the telephone line 3
Since it will not be superimposed on the upper side, as described above, the disconnection from the nearest exchange is reported to the center side.
Therefore, in this case, the center side cannot directly know what kind of abnormal situation has occurred,
Since the disconnection is reported from the exchange, it is possible to indirectly know that some abnormal situation has occurred.

The above-mentioned predetermined time can be set arbitrarily, but if set to about 30 seconds to 1 minute, there will be no practical problem.

The case where the unidirectional operation is set in the control unit 14 has been described above. Next, the case where the bidirectional operation is set in the control unit 14 will be described.

When the crime prevention reporting device is in the alert release state, the following is performed. When the telephone number of the crime prevention notification device is dialed, the bell of the telephone 16 rings. At this time, it is possible to talk with the other party by picking up the handset of the telephone set 16, but if this telephone call is the transmission of data from the center device, the data will not be received by the crime prevention notification device 1.

Further, the control unit 14, when the telephone call is received and the handset is not picked up even after a predetermined time has passed,
From the telephone line 16 to the line input / output unit 14
Switch to the side and judge whether the telephone is a call from the center device. If the call is from the center device, the necessary data is exchanged. If the call is not from the center side, the telephone line 3 Open up.

The operation at this time will be described below with reference to FIGS. 2 and 3. When the center device dials the telephone number of the crime prevention notification device 1 (step S1),
A ringer signal is issued from the nearest exchange (step S2). When the control unit 14 receives the ringer detection signal from the ringer detection unit 13 (step S3), a predetermined ENQ (en
A quirey character) signal is transmitted (step S4).

Then, in response to the ENQ signal, the other party sends a predetermined response signal (acknowledge signal; hereinafter referred to as ACK signal) (step S5), and the control unit 14 detects the ACK signal (step S6). , Control unit 14
Judges that the other party is the center device and exchanges data with the center device (steps S7, S8).
When that ends, both the crime prevention notification device 1 and the center device open the telephone line 3 (steps S9 and S10).

However, as shown in step S11 of FIG. 3, when a signal other than the regular ACK signal is transmitted in response to the ENQ signal (step S11), the control unit 1
4 judges that the other party is not the center device and opens the telephone line 3 (step S12).

Next, the operation in the alert state will be described. When in the alert state, the control unit 14 notifies the center device of the occurrence of an abnormal situation upon receiving an alarm signal from a sensor (not shown). At this time, the control unit 1
Reference numeral 4 switches the line closing unit 11 to the data input / output unit 12 side, generates data to be reported, transfers the data to the data input / output unit 12, and dials the telephone number of the center device.

Further, when a call is received while in the alert state, the control unit 14 causes the handset of the telephone 16 to be picked up within a preset time as in the case of the one-way operation described above. If it is picked up, the control unit 14 does not perform any processing, and waits for the receiver to be placed and the telephone line 3 to be released. However, if the receiver is not picked up within the predetermined time, the line is closed. The connection unit 11 is switched from the telephone 16 side to the data input / output unit 14 side, it is determined whether the telephone is a call from the center apparatus, and if the call is from the center apparatus, some control is performed from the center apparatus. When it is not called from the center side, the telephone line 3 is opened and an abnormal condition occurs. Decision was to open the SW15 is.

As a result, the supervisory signal from the supervisory signal oscillator 5 is no longer superposed on the telephone line 3, so that the disconnection from the nearest exchange informs the center side as described above. It should be understood that this predetermined time can be set arbitrarily.

Therefore, the center side cannot directly know what kind of abnormal situation has occurred,
Since the disconnection is reported from the exchange, it is possible to indirectly know that some abnormal situation has occurred.

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, in the above embodiment, the supervisory signal oscillator 5 is always operating, and the SW 15 is opened when the supervisory signal as its output is superposed on the telephone line 3, but the supervisory signal oscillator 5 is stopped. You can do it.

[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 an example of a communication procedure when data is exchanged between a crime prevention notification device and a center device.

FIG. 3 is a diagram showing an example of a communication procedure when there is an incoming call from other than the center device.

FIG. 4 is a diagram showing a configuration example of a crime prevention alarm system.

FIG. 5 is a diagram for explaining a disconnection detection service.

[Explanation of symbols]

1 ... Crime prevention notification device, 2 ... Center device, 3 ... Telephone line,
5 ... Supervisory signal oscillator, 6 ... Switching station, 7 ... Supervisory signal monitoring section, 8 ... Exchange, 10 ... Line input section, 11 ... Line closing section, 12 ... Data input / output section, 13 ... Ringer detecting section, 1
4 ... Control unit, 15 ... Switch, 16 ... Telephone.

Claims (2)

[Claims] Claims: 1. A crime prevention report provided with various sensors, and when the occurrence of an abnormality is detected based on the signals from these sensors in the alert state, the center apparatus is notified of the occurrence of the abnormality via a general subscriber telephone line. In the equipment, a supervisory signal oscillator that outputs a supervisory signal for disconnection detection on the general subscriber telephone line, and a supervisory signal oscillator when a ringer signal is continuously detected for a preset time in the alert state And a control means for stopping the output of the monitored signal to the general subscriber telephone line. 2. A crime prevention report provided with various sensors, and when an abnormality is detected on the basis of signals from these sensors in the alert state, the center device is notified of the occurrence of the abnormality through a general subscriber telephone line. In the equipment, a supervisory signal oscillator that outputs a supervisory signal for detecting disconnection to the general subscriber telephone line, and if the ringer signal is continuously detected for a preset time in the alert state, the telephone is switched to the center. And a control means for judging whether or not it is from the device and stopping the output of the supervisory signal output from the supervisory signal oscillator to the general subscriber telephone line when not from the center device. Crime prevention reporting device.