JP2971627B2 - Automatic notification system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic reporting system for automatically reporting abnormal information to a designated destination via a telephone line when an error occurs due to the operation of a security sensor such as a fire, a gas detector and a security detector. It is about.

[0002]

2. Description of the Related Art Conventionally, as an automatic reporting system using a telephone line of this kind, a system in which a PBX or the like is used to make a telephone call to an externally designated report destination or a private telephone line is used. There was a method of reporting to the extension telephone specified by the user.

[0003]

However, in the above-described automatic reporting system using a conventional telephone line, a number of calls are made according to the reporting order until the destination of the report is answered. Therefore, when the report destination is absent, a considerable time is required until the report is made, and there is a problem that prompt response cannot be performed. The present invention has been made in order to solve the conventional problems as described above, and has an automatic notification system capable of reporting abnormal information by private broadcasting when a report destination cannot be reported due to absence or the like. The purpose is to provide.

[0004]

According to the first aspect of the present invention, which solves the above-mentioned conventional problems, when an abnormality occurs due to the operation of a connected security sensor, abnormality information is automatically transmitted to a designated destination via a telephone line. In an automatic reporting system for reporting, a private branch exchange connected to the telephone line is provided,
When an abnormal situation is detected, it is detected that the report destination is busy or does not respond even if it is called a predetermined number of times, and the pre-designated report destination is changed. If not, a control unit is provided for outputting abnormality information from a private broadcast speaker connected to the private branch exchange.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an automatic notification system according to one embodiment of the present invention. The automatic notification system includes an automatic notification device 10 installed in a facility or a house to be monitored, and a private branch exchange 2 connected to the automatic notification device 10 by an extension telephone line 12.
0. The automatic reporting device 10 is connected to an extension telephone line 12 for making a telephone call with the outside, and is connected to a normal extension telephone 14. Furthermore, the gas detector 16 and the fire detector 18
And the security detector 19 are connected. Further, the receiver 26 can receive a notification signal from a pendant sensor 27 (a wireless transmitter with an operation button for emergency notification). The pendant sensor 27 is hung on the neck of a person who cannot move, such as being bedridden, and can transmit an emergency notification signal to the receiver 26 by operating a switch when an abnormality occurs. In the private branch exchange 20,
In addition to the extension telephone line 12, an outside line 21 such as a public line, a plurality of extension telephones 22, and a private broadcast speaker 23 are connected. The private branch exchange 20 controls switching between the extension telephone line 12, the outside line 21, the extension telephone 22, and the private broadcast speaker 23. The premises broadcast speaker 23 is usually used for a paging broadcast or the like, but it is also possible to broadcast abnormal information by using the loudspeaker 23 when a telephone report is not possible as described later. The function of the private branch exchange 20 is switched by, for example, assigning a predetermined special number from an extension.
For example, when the extension number "324" is dialed, the telephone is switched to a predetermined extension telephone set 22. When a telephone number is dialed after the special number "0", the telephone is switched to an outside line, and when a telephone number "9" is dialed, the telephone is switched to a private broadcast speaker 23.

Next, the configuration of the automatic notification device 10 will be described. First, the extension telephone line 12 is drawn into the automatic notification device 10, is connected to the extension telephone 14 via the relay contacts b1 and b2, and switches the extension telephone 14 to the extension telephone line 12 by switching the relay contacts b1 and b2. It can be connected or disconnected from. Further, the extension telephone line 12 drawn into the automatic notification device 10 has a relay contact c.
1 and c2 are inserted and connected, and the relay contacts c1 and c2 connect the primary winding of the transformer circuit 28 to the switching contacts, and switch the relay contacts c1 and c2 in the line-disconnected state shown in FIG. As a result, the primary winding of the transformer circuit 28 is inserted into the extension telephone line 12 so that a call signal can be transmitted to and received from the extension telephone line 12 via the transformer circuit 28. Further, a relay contact a for generating a dial pulse by the operation of the relay A is connected between the extension telephone lines 12 drawn into the automatic notification device 10. For the control circuit 32, an input circuit 25, a display circuit 34, an operation circuit 36 having an emergency push button and the like, a setting numeric key switch 38 for setting a telephone number to be notified, etc., a memory circuit 40, relays A, B, and C And ringback
The busy tone detection circuit 42 is connected. In the memory circuit 40, a plurality of notification destinations to be notified at the time of abnormality are stored in accordance with the priority order.

Ringback / busy tone detection circuit 42
, The output of the secondary winding of the transformer circuit 28 is input. A dialer circuit 44 is provided for the control circuit 32.
Is provided so that a dial pulse can be transmitted to the extension telephone line 12 by opening and closing the relay contact a by the relay A. The dialer circuit 44 can transmit a PB signal composed of a multi-frequency signal to the extension telephone line 12 via the audio amplifier 46, the transformer circuit 28, and the relay contacts c1 and c2.

Further, the control circuit 32 is provided with a voice synthesizing circuit 48 for notifying a predetermined voice message to the center side or the like by an automatic dial when an abnormality such as a fire or gas leak occurs. The voice synthesizing circuit 48 receives a command from the control circuit 32, reads out a predetermined voice message stored in the memory circuit 50, converts the read voice message into an analog voice signal, and outputs a band-pass filter 52, a voice amplifier 46, a transformer circuit 28, A voice message signal can be transmitted to the extension telephone line 12 via the relay contacts c1 and c2. Further, a speaker 56 is provided in the automatic notification device 10. When the security sensor detects an abnormality, an audio alarm signal obtained by an instruction to output an alarm to the voice synthesis circuit 48 is output by the amplifier 54 to the speaker 56. To give an audible alarm indicating an abnormality.

Next, the control operation of the abnormality occurrence processing in the automatic notification system configured as described above will be described with reference to the flowchart of FIG. The control is performed by the memory circuit 4
It is executed by the control program stored in “0”.
Now, for example, a gas sensor 16 which is a security sensor,
When an abnormality detection signal is supplied from any of the fire detector 18 and the security detector 19 to the control circuit 32 via the input circuit 25, the control circuit 32 executes the following abnormality generation processing. First, an extension telephone line is captured (step S1). That is, the relay contacts b1 and b2 are switched by the operation of the relay B to disconnect the extension telephone 14 from the extension telephone line 12. At the same time, the relay contacts c1 and c2 are activated by the operation of the relay C.
To connect the primary winding of the transformer circuit 28 to the extension telephone line 12. Thus, the same state as when the handset of the extension telephone 14 is off-hook is obtained. Next, by the operation of the dialer circuit 44, a PB signal (dial signal) composed of a combination of multi-frequency signals is transmitted to the extension telephone line 12 via the audio amplifier 46, the transformer circuit 28, and the relay contacts c1 and c2 (step S2). ). The destination to which the dial signal is sent is to the report destination stored in the memory circuit 40 in priority order. Normally,
First, call an extension phone in a security room or the like. Subsequently, it is checked whether or not the called party is busy based on whether or not a busy tone is detected by the ringback / busy tone detection circuit 42 (step S3). If the destination is not busy, the busy tone is not detected and the process proceeds to step S4.
In step S4, the ringback / busy tone detection circuit 42 checks whether or not there is a ringback tone from the report destination and whether or not there is a response from the report destination. In this case, the ring back tone disappears if the callee answers by answering the telephone. Therefore, the ringback / busy tone detection circuit 42 detects this and checks for a response. Then, when the ringback tone disappears, the voice synthesizing circuit 48 is operated, and for example, a voice message indicating the occurrence of a fire is read out from the memory circuit 50 and transmitted as abnormal information (step S5). The voice message at that time is, for example, an easy-to-understand message such as "It is a fire. Please check the site" in the daytime, and a continuous sound message such as "Phi-Pi-Pi" at night. When the destination telephone is disconnected, a busy tone is sent to the extension telephone line 12 from the private branch exchange. Then, the ringback / busy tone detection circuit 42 checks whether or not a busy tone has been detected at the report destination, and transmits abnormal information until a busy tone is detected (step S6). When the busy tone is detected, the extension telephone line 12
Is released, and the process ends.

Here, in step S3, when the call destination is busy and the ringback / busy tone detection circuit 42 detects a busy tone, or in step S4, the call destination is not responded even if called, ie, ringback. If the ring tone is detected by the busy tone detection circuit 42, the call is repeated for a certain period of time (step S8). If the called party does not respond to the call after the predetermined number of calls for a certain period of time, the extension telephone line 12 is disconnected. It is released (step S9), and it is checked whether there is a next report destination (step S10). If there is a next report destination, the process proceeds to the next report destination (step S11). The notification destination is changed in the priority order stored in the memory circuit 40. If there is no next report, extension 1
2 (step S12), the extension telephone line 12 is connected to the private branch exchange 20, and a special number transmission process for private broadcast is performed (step S13). In other words, the private broadcast speaker connected to the private branch exchange 20 enables the broadcast from the private broadcast speaker 23. Then, the speech synthesis circuit 4
8, a voice message indicating a fire or the like stored in the memory circuit 50 is read from the memory circuit 50,
Local broadcast speaker Broadcast from the local broadcast speaker 23 (step S14). The broadcast in this case is repeated a predetermined number of times (three times in the example) (step S15). When the predetermined number of broadcasts is completed, the extension telephone line 12 is opened in step S7, and the process is terminated.

Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited to the above embodiments. For example, the present invention can be applied to a temporary fire alarm system that is temporarily used in a place such as a construction site. Such a temporary system is advantageous because it does not require the laying of a dedicated line. Also, at construction sites and sites under renovation, fire alarms may not be installed or may not operate even if they are installed, but the automatic notification system according to the present invention is applied to such places. By connecting to a private telephone line, a system can be easily constructed.

[0012]

As described above, according to the present invention, when a report cannot be made by telephone because the report destination is absent or the like, abnormal information is output from a private broadcast speaker connected to the private branch exchange. As a result, it is no longer possible to send a report of the abnormality information, and a prompt response is possible.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an automatic notification system according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a control operation of an abnormality occurrence process in the automatic notification system.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 automatic notification device 12 extension telephone line 14, 22 extension telephone 23 premises broadcast speaker 20 private branch exchange 32 control circuit 42 ringback / busy tone detection circuit 44 dialer circuit 40, 50 memory circuit A, B, C relay

Continuation of the front page (56) References JP-A-60-14396 (JP, A) JP-A-2-48383 (JP, A) JP-A-1-99338 (JP, A) (58) Fields investigated (Int) .Cl. ⁶ , DB name) G08B 25/08 H04Q 9/00 H04R 3/00

Claims (1)

(57) [Claims] 1. An automatic reporting system for automatically reporting abnormality information to a designated destination via a telephone line when an abnormality occurs due to the operation of a connected security sensor, comprising: a private branch exchange connected to the telephone line; At times, by detecting that the report destination is busy or not responding even if it is called a predetermined number of times, the pre-designated report destination is changed and no response is made even if all the report destinations are talking or call the predetermined number of times. An automatic notification system, comprising: a control unit that outputs abnormal information from a private broadcast speaker connected to the private branch exchange in such a case.