JPH10107924A - Line state detecting abnormality informing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the line state detecting abnormality informing device that surely informs abnormality information to a monitor station independently of quality of a telephone line. SOLUTION: The line state detecting abnormality informing device is provided with an incoming call detection circuit 3 that detects an incoming call state of a telephone line, a busy sate detection circuit 4 that detects a busy state of the telephone line. In the case a CPU 2 conducts switching control of changeover means such as a DC closing loop circuit 5 and relays A, B, C according to the result of response by a polarity detection circuit 7 in addition to the recognition of a dial tone signal from a telephone station side and a reception tone signal from a monitor station as the reception signal by a tone recognition circuit 6, the CPU 2 is operated in response to a result of an incoming call state or a busy state and allows a reply device 8 to send an abnormal content signal in response to call request information on the occurrence of an emergency to a monitor station on the occurrence of a fault state and allows a voice message device 9 to the telephone line when the telephone line is forcibly interrupted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal (including voice) in which abnormal information corresponding to call request information at the time of occurrence of an abnormality such as a fire or the intrusion of a thief using a telephone line is coded. The present invention relates to a line state detection type abnormality reporting device that automatically reports to a monitoring station (security headquarters).

[0002]

2. Description of the Related Art Conventionally, as this kind of abnormality notification device,
For example, those disclosed in Japanese Patent Publication No. 58-204664 may be mentioned.

This abnormality reporting device reports abnormality information to a monitoring station in response to call request information using a telephone line, and includes a busy detection means for detecting whether the telephone line is busy, Detecting means for detecting information, circuit closing means for closing a line, dial pulse generating means for calling a monitoring station,
Busy by setting the time to stop dial pulse from dial pulse generating means and switching the line closing means to the device side in response to the call request information and stopping the dial pulse for a certain time Line opening means for forcibly releasing the telephone line of the telephone. If the call request information is detected even when the telephone is busy, the telephone line is forcibly released and then connected to the monitoring station to make a call. Request information can be reported to monitoring stations.

That is, in this abnormality notifying device, when the detecting means detects the call request information when an abnormal situation occurs while the telephone line is empty, the telephone line is disconnected from the telephone side and the line closing means is used. Form a DC closed loop,
Thereafter, a predetermined dial pulse signal (for example, the telephone number of the monitoring station) stored in advance by the dial pulse generating means is dialed to the monitoring station through a DC closing loop. After that, the response of the monitoring station is detected by the polarity reversal detection circuit, and the response means outputs the coded abnormality content signal of the abnormality information corresponding to the type of abnormality stored in the signal generating circuit in advance through the telephone line. Is transmitted to the monitoring station so that the monitoring station can know the type of abnormality that has occurred.

[0005] Incidentally, as another general well-known technique related to reporting information using a telephone line, for example, Japanese Patent Laid-Open No.
An automatic reporting device disclosed in Japanese Patent Application Laid-Open No. 8-21995 and Japanese Patent Application Laid-Open No. 61-88642, and the like are exemplified.

[0006]

In the case of the above-described abnormality reporting device, the connection to the telephone line is not confirmed when the dial pulse signal is transmitted at the time of occurrence of the abnormal situation.
The dial pulse signal may not be accurately received by the telephone station depending on the line state including the line state (incoming call, busy, etc.) and the condition of the telephone exchange.

Further, since a dial pulse signal is always transmitted after a fixed time interval is formed after forming a DC closed loop with respect to a telephone line, it is important to contend with the time of occurrence of an abnormal situation. A situation in which time is lost can also occur.

Further, since the abnormality content signal indicating the abnormality information sent to the monitoring station is a one-way transmission, it is not possible to know whether or not it has been received correctly, and if a trouble occurs in the transmission, the monitoring station side There is a problem that the response in the can not be measured.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem. A technical problem of the present invention is to provide a line state detection system capable of surely reporting abnormal information to a monitoring station regardless of the quality of a telephone line. An object of the present invention is to provide an abnormality notification device.

[0010]

According to the present invention, there is provided an abnormality reporting apparatus for reporting, to a monitoring station, details of an abnormality according to call request information when an abnormality occurs using a telephone line. Detecting means for detecting request information, responding means for transmitting an abnormal content signal indicating an abnormal content by coding corresponding to the type of abnormal information according to the call request information, and monitoring the state of the telephone line Line state monitoring means, a DC closed loop circuit for closing the telephone line, reception recognition means for recognizing a reception confirmation reception signal from the monitoring station and the telephone station side, switching of the telephone line, and Switching means for forming and opening a DC closed loop circuit; generating a call signal for calling a monitoring station in accordance with the contents of monitoring by the line state monitoring means; and responding to the recognition result of the reception signal by the reception recognition means. A line state detection type abnormality reporting device comprising: a switching unit for controlling the switching unit to transmit the call signal by forming a DC closed loop circuit and the abnormality content signal by the response unit to a monitoring station through a telephone line. can get.

Further, according to the present invention, in the above-mentioned line condition detection type abnormality notification device, there is provided a voice message device for transmitting a voice message signal to the telephone line when the switching unit forcibly disconnects the telephone line. As a result, a line state detection type abnormality notification device is obtained.

Further, according to the present invention, in any one of the above line condition detection type abnormality notification devices, a polarity detection circuit for detecting a response on the monitoring station side is provided, and the control means recognizes the response signal in addition to recognizing the received signal. A line condition detection type abnormality notification device that performs switching control in accordance with the following is obtained.

In addition, according to the present invention, in any one of the above line condition detection type abnormality notification devices, the line condition monitoring means includes an incoming call detection circuit for detecting an incoming state of the telephone line, and a busy state of the telephone line. A busy state detecting circuit for detecting a state, wherein the control means performs a switching control according to the result of the incoming state and the busy state to obtain a line state detecting type abnormality reporting apparatus.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing the basic configuration of a line condition detection type abnormality notification device according to one embodiment of the present invention.

This abnormality reporting device reports the content of the abnormality according to the call request information at the time of occurrence of the abnormality to the monitoring station by using a telephone line. That is, the abnormality notification device includes a sensing device 1 as sensing means for detecting the call request information, and an abnormality content signal indicating the content of the abnormality which is coded corresponding to the type of the abnormality information according to the call request information. A response device 8 as response means for sending to the monitoring station, a line state monitoring means for monitoring the state of the telephone line, a DC closing loop circuit 5 for closing the telephone line and showing an on-hook state to the exchange, Tone recognition circuit 6 as reception recognition means for recognizing an acknowledgment signal from the monitoring station and the telephone station, and switching means for switching a telephone line and forming and opening a DC closed loop circuit 5 for the telephone line. And

The abnormality notifying apparatus generates a dial pulse signal as a call signal for calling a monitoring station according to the contents of monitoring by the line state monitoring means, and generates a dial pulse signal as a call recognition signal by the tone recognition circuit 6. The switching means is controlled to switch the dial pulse signal generated by the formation of the DC closed loop circuit 5 and the abnormality content signal from the response device 8 to a monitoring station through a telephone line to a monitoring station. The system includes a voice message device 9 for transmitting a voice message signal to the telephone line when the line is forcibly disconnected, and a polarity detection circuit 7 for detecting a response from the monitoring station.

The line condition monitoring means comprises an incoming call detecting circuit 3 for detecting the incoming state of the telephone line and a busy detecting circuit 4 for detecting the busy state of the telephone line. Therefore, the CPU 2 recognizes the dial tone signal from the telephone station and the received tone signal from the monitoring station as the received signal by the tone recognizing circuit 6 and performs the switching control according to the response result by the polarity detecting circuit 7 when receiving. It operates according to the result of the busy state. The switching means receives a switching control signal from the CPU 2 when an abnormal situation occurs, and switches a relay A for switching from the telephone TEL provided in parallel to the telephone line to the abnormality reporting device side, and a voice message signal from the voice message device 9. It comprises a relay B for sending out and a relay C for forming the DC closed loop circuit 5.

Therefore, the basic operation of the abnormality notification device will be specifically described below. However, since the operation here differs in detail depending on the state of the telephone line, it will be described in several cases.

First, the operation when the telephone line is empty will be described. When an abnormal situation occurs, the sensing device 1 notifies the CPU 2 and the response device 8 of the call request information,
At U2, the state of the telephone line detected by the incoming call detection circuit 3 and the busy detection circuit 4 is read in order to know the state of the telephone line.

When recognizing the empty state of the telephone line,
The CPU 2 controls the switching relay A and the dial pulse transmission relay C on the telephone TEL side, and forms a DC closed loop circuit 5 for the telephone line. Thereafter, a telephone line is connected, and after a dial tone signal from the central office is detected by a tone recognition circuit 6, a predetermined diamond pulse signal stored in advance in the CPU 2 is passed through the DC closing loop circuit 5 via the telephone line. Sends a call to the monitoring station. However, if the dial tone signal from the central office is not detected within a few seconds after forming the DC closed loop circuit 5 for the telephone line, the CPU 2 recognizes that the transmission has failed and sets the relay A
And control the relay C to release the telephone line once and repeat the above operation again.

Thereafter, the response from the monitoring station is sent to the polarity detection circuit 7.
And sends a coded abnormality content signal corresponding to the type of abnormality information corresponding to the call request information stored in advance by the response device 8 to the monitoring station through the telephone line according to the instruction of the CPU 2. After completion of the transmission of the abnormal content signal, the tone recognition circuit 6 detects a reception tone signal for acknowledgment of reception from the monitoring station. Then, the relay A and the relay C are restored and the DC closed loop circuit 5 is opened. However, if the received tone from the monitoring station is not detected within a few seconds after transmitting the abnormal content signal, the CPU 2 causes the response device 8 to transmit the abnormal content signal again.

Next, the operation when the telephone line is busy will be described. As described above, when the sensing device 1 notifies the CPU 2 and the answering device 8 of the call request information at the time of occurrence of the abnormal situation, the CPU 2 detects the incoming call detection information by the incoming call detection circuit 3 and the busy detection circuit 4 in order to know the state of the telephone line. Read the state of the telephone line.

When it is recognized that the telephone line is busy, the CP
U2 activates the relay B to connect the voice message device 9 to the line, and reports a call request to the called party and the user. Thereafter, only the relay A is operated to release the busy telephone line. After a certain period of time, the relay C is operated to form the DC closed loop circuit 5 for the telephone line, and then only the relay A is operated to restore the telephone line. Thereafter, the same operation as described above is performed. Do.

That is, the CPU 2 monitors the state of the incoming call and the busy telephone line by the incoming call detection circuit 3 and the busy detection circuit 4 before the relay A switches to the abnormality notification device side. After the relay A is forcibly switched and a predetermined time has elapsed, the telephone line is restored by forming the DC closed loop circuit 5 and an abnormality content signal is transmitted.

Further, when the telephone line is receiving a call, when the sensing device 1 notifies the CPU 2 and the answering device 8 of the call request information at the time of occurrence of an abnormal situation as described above, the CPU 2 knows the state of the telephone line. Next, the state of the telephone line detected by the incoming call detection circuit 3 and the busy detection circuit 4 is read.

Here, when it is recognized that a telephone line is being received, C
The PU 2 activates the relays A and C to form the DC closed loop circuit 5 for the telephone line, and to perform an automatic response by the voice message device 9 having an automatic response circuit. The voice message device 9 transmits a predetermined voice message signal and notifies the CPU 2 of the completion of the transmission. C
In PU2, the relay A is switched, and after a certain time has elapsed after the busy state, the relay C alone is operated again to form the DC closed loop circuit 5 for the telephone line.
To restore the telephone line. After the telephone line is restored,
A dial pulse signal is sent and transmitted by the DC closed loop circuit 5, a dial tone from the exchange of the telephone TEL is detected by the tone recognition circuit 6, and thereafter, after the dial pulse signal is transmitted, the monitoring station responds. After confirming this, the abnormal content signal is transmitted. Further, the tone recognition circuit 6 recognizes the received tone signal indicating that the monitoring station has received the abnormal content signal, determines that the transmission is completed, activates the relay A, and opens the telephone line.

In the line condition detection type abnormality notification device of one embodiment, the CPU 2 sends out a predetermined diamond pulse signal stored in advance as a call signal, but a push-tone signal is applied instead. It is also possible to make it. Also, in the line condition detection type abnormality notification device of one embodiment,
Although it has been described that the response device 8 transmits a coded abnormality content signal corresponding to the type of the abnormality information to the monitoring station, a voice message signal may be transmitted instead.

[0029]

As described above, according to the line condition detecting type abnormality reporting device of the present invention, the line condition monitoring means is provided to monitor the telephone line, and depending on the condition, an abnormal situation is generated. Since the abnormality content signal corresponding to the call request information is automatically and appropriately transmitted to the monitoring station, the abnormality information can be reliably reported to the monitoring station regardless of the quality of the telephone line.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of a line state detection type abnormality notification device according to an embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sensing device 2 CPU 3 incoming call detection circuit 4 busy detection circuit 5 DC closed loop circuit 6 tone recognition circuit 7 polarity detection circuit 8 answering device 9 voice message device

Claims (4)

[Claims] 1. An abnormality reporting device for reporting, to a monitoring station, the content of an abnormality according to call request information when an abnormality has occurred using a telephone line, and sensing means for detecting the call request information; Responding means for coding the abnormality information corresponding to the call request information and transmitting an abnormality content signal indicating the content of the abnormality to the monitoring station; and line state monitoring means for monitoring the state of the telephone line A DC closing loop circuit for closing the telephone line, reception recognition means for recognizing a reception confirmation reception signal from the monitoring station side and the telephone station side, and switching of the telephone line and the DC for the telephone line. Switching means for forming and opening a closed loop circuit; generating a call signal for calling the monitoring station in accordance with the contents of monitoring by the line state monitoring means; and receiving the reception signal by the reception recognition means. Control means for switching the switching means in accordance with the signal recognition result to transmit the call signal by forming the DC closed loop circuit and the abnormality content signal by the response means to the monitoring station through the telephone line. And a line condition detection type abnormality notification device. 2. The abnormality notification device according to claim 1, further comprising a voice message device for transmitting a voice message signal to the telephone line when the switching unit forcibly disconnects the telephone line. A line condition detection type abnormality notification device, characterized in that: 3. The abnormality notification device according to claim 1, further comprising a polarity detection circuit for detecting a response from the monitoring station, wherein the control means recognizes the received signal and outputs the response signal. A line state detection type abnormality notification device, wherein the switching control is performed according to a result. 4. The line condition detection type abnormality reporting device according to claim 1, wherein said line state monitoring means detects an incoming state of said telephone line, and said incoming call detecting circuit detects said incoming state of said telephone line. A line detection circuit for detecting a busy state of the line, wherein the control means performs the switching control according to a result of the incoming state and the result of the busy state. .