JPH07193653A - Burglar preventing notification equipment - Google Patents

Abstract

PURPOSE:To allow a center equipment side to detect occurrence of a fault even when a sensor senses an event 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 sensor senses an event in the guarded state, when no phone call comes for the case, a control section 14 informs the presence of an intruder to a center equipment through a telephone line 3, When a phone call comes, the 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 the 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 the sensor gives an alarm while the state is in effect, if there is a telephone call at that time, there is a problem that the crime prevention notification device 1 cannot notify the center device 2 of the occurrence of an abnormality.

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 object, the crime prevention reporting device of the present invention is provided with various sensors,
When an abnormality is detected on the basis of signals from these sensors in the alert state, a security alarm device that notifies the center device of the abnormality through the general subscriber telephone line sends a monitoring signal for disconnection detection. Monitoring signal oscillator output on the general subscriber telephone line and monitoring when the ringer signal is detected in the alert state or in the busy state, and when the alarm signal from the sensor is received And a control means for stopping the output of the supervisory signal output from the signal oscillator onto the general subscriber telephone line.

[0016]

[Advantageous Effects and Effects of the Invention] The control means determines that an abnormal state has occurred when a call is received in the alert state and a warning signal is received from the sensor at that time. , Stop outputting the supervisory signal from the supervisory signal oscillator to the general subscriber telephone line.

As a result, the exchange station closest to the crime prevention notification device determines that the telephone line to 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.

Accordingly, even if an intruder dials the telephone number of the crime prevention notification device in order to intentionally interfere with the notification of the occurrence of an abnormal situation to the center device,
When the sensor detects the intruder and outputs a warning signal, the information indicating that there is an intruder is not directly reported to the center device, but the center device does not directly notify the switching device near the crime prevention notification device. Since a notification indicating that the wire has been disconnected is issued from the device, the center device side can indirectly know that the abnormality has occurred.

[0019]

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 unit 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.

The data input / output unit 12 sends the data from the crime prevention notification device to the center device (not shown in FIG. 1) including the notification of the occurrence of an abnormality.
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 state of the telephone line 3 to the control unit 14, 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.

Since the SW 15 is normally closed, the supervisory signal output from the supervisory signal oscillator 5 is superimposed on the telephone line 3. However, when instructed by the control unit 14, the SW 15 is open. become. In this case, the supervisory signal output from the supervisory signal oscillator 5 is not superimposed on the telephone line 3.

As the sensor S, various sensors are used as in the conventional case. Although only one sensor S is shown in FIG. 1, this is a representative example of a plurality of sensors.

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 situation is as follows. 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 not possible to pick up the handset even if a predetermined time has elapsed after receiving a call, it is determined that there is an abnormal state and the operation for opening the telephone line 3 is performed. It is also possible to make it take place. 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 alarm signal is received from the sensor S when the telephone is not being called, the control unit 14 notifies the center device of the occurrence of the abnormal situation.
At this time, the control unit 14 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. To do.

Further, when the incoming call is detected by the ringer detection signal in the alert state, the control unit 14 causes the handset of the telephone 16 to receive the alert signal from the sensor S. Waiting for the conversation to end and the telephone line 3 to be released. Because
This is because the call may be an urgent matter.

However, when the bell of the telephone 16 is ringing, that is, when the ringer detection signal is output from the ringer detector 13, or when the telephone receiver of the telephone 16 is picked up, an alarm from the sensor S is issued. When the signal is received, the control unit 14 determines that there is an intruder,
At this time, since the center device cannot be notified of the occurrence of the abnormal situation, the control unit 14 immediately opens the SW15.

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. Therefore, in this case, the center side cannot directly know that there was an intruder,
Since the disconnection is reported from the exchange, it is possible to indirectly know that some abnormal situation has occurred.

As described above, when the one-way operation is set, when the sensor S issues the alarm in the alert state, the control unit 14 makes an intruder to the center device if no call is made at that time. However, when there is a telephone call, the supervisory signal from the supervisory signal oscillator 5 is prevented from being superimposed on the telephone line 3.

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 warning release state, the situation is as follows. 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.

The control unit 14 also includes a ringer detection unit 13
When the telephone call is received and the handset cannot be picked up even after a lapse of a predetermined time, the line closing unit 11
Is switched from the telephone 16 side to the data input / output section 14 side,
It is determined whether or not the telephone is a call from the center device, and when the call is from the center device, the necessary data is exchanged, and when the call is not from the center side, the telephone line 3 is opened. 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 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 side 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, the crime prevention reporting device 1 and the center device both open the line (steps S9 and S10).

However, as shown in step S11 of FIG. 3, when a signal other than the normal 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 line (step S12).

Next, the operation in the alert state will be described. In the alert state, when the control unit 14 receives the alarm signal from the sensor S while the telephone is not being called, the control unit 14 notifies the center device that an abnormal situation has occurred. At this time, the control unit 14 switches the line closing unit 11 to the data input / output unit 12 side, generates data to be reported, and transfers the data to the data input / output unit 12,
Performs the process of dialing the telephone number of the center device.

Further, when a call is received while in the alert state, the control unit 14 preliminarily sets the same as in the case of the one-way operation described above in a state in which the alarm signal is not received from the sensor S. Phone 1 within the set time
When the telephone receiver of No. 6 is picked up, the control unit 14 puts the telephone receiver on and waits until the telephone line 3 is released, but when the telephone receiver is not picked up within the predetermined time, the line closing unit. 1
1 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 device, and if the call is from the center device, some control is requested from the center device. When it is determined that the call is being made, data is exchanged with the center device in the manner shown in FIG.

However, a state in which the crime prevention notification device 1 is receiving a call, that is, when the ringer detection unit 13 outputs a ringer detection signal or the ringer detection unit 13 has closed the telephone line 3. When the alarm signal is received from the sensor S while the signal indicating is output, the SW 15 is closed because the center device cannot be notified that there is an intruder.

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 noted that, as described above, 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.

As described above, even when the bidirectional operation is set, the control unit 14 keeps the sensor S in the alert state.
Is notified, the center device will be notified that there is an intruder if no call is made at that time.
When a telephone call is made, the supervisory signal from the supervisory signal oscillator 5 is prevented from being superimposed on the telephone line 3.

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 part, 15 ... switch, 16 ... telephone, S ... sensor.

Claims (1)

[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 to the general subscriber telephone line, and a state in which a ringer signal is detected in the alert state or a busy state, and from the sensor And a control means for stopping the output of the supervisory signal output from the supervisory signal oscillator to the general subscriber telephone line when the alert signal is received.