JP3118591B2 - Emergency notification system using telephone line - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an emergency notification system using a telephone line.

[0002]

2. Description of the Related Art In recent years, with the development of security systems such as crime prevention systems and disaster prevention systems, even if a resident is absent, an emergency report is automatically sent to a predetermined report destination in the event of an emergency. Emergency automatic alerting devices have been developed and used, so that they can be promptly dealt with.

FIG. 8 shows such an automatic emergency notification device 10.
In the figure, reference numeral 101 denotes a telephone line L1, L2 detected by a photocoupler PC (consisting of diodes D1, D2 and phototransistors PT1, PT2 inserted in anti-parallel to the telephone line). A call detection circuit that receives the current and determines whether or not the telephone line is in use;
A line 102 drives the relay Ry for the required time determined by the timer 102a (drives the relay contacts ry1 and ry2) to connect the telephone line once, and releases the telephone line for the required time when the timer 102a times out. Automatic cutting means, 103 is a security sensor S1,
An automatic notifying circuit 104 for making an automatic call in response to the signal S2... Sn, receives a call signal (16 Hz, 1 second ON, 2 second OFF) transmitted via a telephone line, and generates a call signal. This is a call detection circuit for detecting the presence / absence.

[0004] In such an automatic emergency notification device 100,
As shown in the flowchart of FIG. 9, when any of the security sensors S1, S2,.
01, it is determined whether or not the line is in use. If the line is being used by a telephone call with the telephone TEL, the system waits until the use of the line is completed.
It determines whether or not a call signal has arrived. When the call signal does not arrive, the automatic notification circuit 103 makes an automatic notification. On the other hand, when the call signal arrives, the line automatic disconnection means 102 temporarily connects the line for a required time. Then, after the line is released for the required time and the call is forcibly cut off, the automatic notification circuit 103 makes an automatic notification. Therefore, a call is received from another station immediately before the automatic notification is performed. Even in such a case, the call can be immediately terminated and the automatic notification can be promptly made. However, in such an automatic emergency notification device, the call detection circuit 104 needs to detect 16
It is necessary to detect a call signal of 1 Hz (ON for 1 second, OFF for 2 seconds), which complicates the circuit configuration and processing and causes a reduction in reliability.

[0005]

The present invention, which has been proposed in view of the above circumstances, has a structure in which the presence or absence of a call is determined by detecting a call signal. Once connected, disconnect and forcibly eliminate the call, or determine the presence or absence of a call based on fluctuations in the voltage polarity of the telephone line.If a call is determined, disconnect and then connect the telephone line once. It is an object of the present invention to provide an emergency notification system in which a call is forcibly eliminated, a circuit configuration and processing are simplified, and reliability is improved.

[0006]

According to the first aspect of the present invention, which is proposed to achieve the above object, the use of a telephone line is determined by monitoring the presence or absence of a DC loop current flowing through the telephone line. It has a call detection circuit, automatic line disconnection means for closing the telephone line for the required time and opening it for the required time, and automatic call means for automatically dialing a preset supervisory headquarters, etc. When an incoming call request is received from the above-mentioned automatic notification circuit, and when an outgoing request is received from the above-mentioned automatic notification circuit, it is confirmed that the telephone line is in an unused state by the above-mentioned call detection circuit. And the control means for activating the automatic notification circuit, and thereafter operating the automatic notification circuit to notify the control headquarters of disaster prevention information.

According to a second aspect of the present invention, a DC loop current flowing through a telephone line is detected in place of the call detecting circuit according to the first aspect. A polarity reversal / call detection circuit for monitoring the presence / absence of the telephone line to determine the use state of the telephone line. The control means, when receiving a transmission request from the automatic notification circuit, When it is confirmed by referring to the call detection circuit that the telephone line is in the non-use state, the line automatic disconnection means is operated to perform an operation of once closing the telephone line and then opening it for a predetermined time. During the opening time of the telephone line, the presence / absence of the polarity inversion is determined, and the line automatic disconnection means is repeatedly activated until it is determined that the polarity inversion is not performed. Repeatedly performed 閉結 the opening operation of the line, the 監制 headquarters by operating the automatic report circuit when it determines that there is no polarity inversion is configured to notify the emergency information.

According to a third aspect of the present invention, the configuration is the same as that of the second aspect.
When a call request is received from the automatic notification circuit, the presence / absence of the polarity inversion is further determined at the time when it is confirmed that the telephone line is in the non-use state by referring to the polarity inversion / call detection circuit. When the reversal is not determined, the automatic notification circuit is activated to notify the supervisory headquarters of disaster prevention information.On the other hand, when the polarity reversal is determined, the line automatic disconnection means is activated, and the telephone line is temporarily closed. Perform an operation to open for a predetermined time, and determine whether there is polarity inversion during the opening time of the telephone line, and repeatedly activate the line automatic disconnection unit until it is confirmed that there is no polarity inversion. Thus, the connection and disconnection operations of the telephone line are repeatedly performed, and when it is determined that there is no polarity reversal, the automatic notification circuit is activated to notify the supervisory headquarters of disaster prevention information. There is a.

[0009]

According to the first aspect of the present invention, when the security sensor issues a notification and the automatic notification circuit issues a transmission request to the control means, the control means refers to the call detection circuit and disables the telephone line. After confirming that it is in a state,
The telephone line is temporarily closed for the required time by the line automatic disconnecting means and then opened for the required time, and thereafter, a transmission command is sent to the automatic notification circuit to perform an emergency notification.

According to the second aspect of the present invention, when the security sensor issues a notification and the automatic notification circuit issues a transmission request to the control means, the control means refers to the polarity reversal / call detection circuit to determine the telephone line. After confirming that the telephone line is in a non-use state, the telephone line is temporarily closed for a required time by the line automatic disconnection means and then opened for a required time, and thereafter, the telephone line is referred by referring to the polarity reversal / call detection circuit. The presence / absence of polarity reversal is detected, and if polarity reversal is not detected, a transmission command is immediately sent to the automatic notification circuit to make an emergency report, but when polarity reversal is determined, it is confirmed that there is no polarity reversal. The automatic line disconnection means is activated repeatedly to determine the presence or absence of polarity reversal, and when it is confirmed that there is no polarity reversal, a transmission command is sent to the automatic notification circuit and emergency communication is performed. The causes.

According to the third aspect of the present invention, the control means monitors the presence / absence of polarity reversal of the telephone line with reference to the polarity reversal / call detection circuit at predetermined time intervals. When the sensor issues a call and a call request is made from the automatic notification circuit, the polarity reversal / call detection circuit confirms that the telephone line has become non-use, and then the polarity reversal / call detection circuit reverses the polarity. Is determined. When no polarity reversal is detected, a transmission command is sent to the automatic reporting circuit to make an emergency report. When polarity reversal is detected, the line automatic repetition is repeated until it is confirmed that there is no polarity reversal. Activate the cutting means to determine the presence or absence of polarity reversal,
When it is confirmed that there is no polarity reversal, a transmission command is sent to the automatic notification circuit to make an emergency notification.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an example of the configuration of an emergency automatic notification device A according to the present invention. In FIG.
A call detection circuit 11 for monitoring the presence or absence of a DC loop current flowing through the telephone line connected to L2 to determine the use state of the telephone line. An automatic line disconnecting means 12 for further releasing the required time later has an automatic calling means (not shown) for automatically dialing a preset supervisory headquarters or the like, and receives an alarm signal from the security sensors S1, S2,. An automatic notifying circuit 13 for issuing a call request when the call is issued, and a control means 13 for receiving a call request from the automatic notifying circuit 12 and performing necessary processing. In the photocoupler PC, light-emitting diodes D1 and D2 connected in antiparallel are inserted in series in a telephone line, and the voltage polarity and the current level of the telephone line are detected by the phototransistors PT1 and PT2. Upon receiving the set signal from the control means 13, the line automatic disconnecting means 11 transmits the set signal to the relay RY for a predetermined time (time sufficient for the exchange to recognize that the call has been received) by the timer 11a. Then, the relay contacts ry1 and ry2 are connected to the automatic notification circuit 12 to close the telephone line, and thereafter, the required time (sufficient time for the switch to recognize that the line has been interrupted) Only, a reset signal is transmitted from the timer 11a to the relay RY, and the telephone line is connected to the telephone TEL side and released (the line is not connected because the telephone handset is returned). When the control means 13 receives the transmission request signal from the automatic notification circuit 12, the control means 13 refers to the call detection circuit 10 to confirm that the telephone line has become non-use state, and then activates the line automatic disconnection means 11, Thereafter, the automatic notification circuit 12 is operated to notify the control headquarters of disaster prevention information.

The operation of the thus-configured emergency notification system A of the present invention will be described with reference to the flowcharts of FIGS. Any security sensor S1
When (S2... Sn) is issued, a transmission request signal is sent from the automatic notification circuit 12 to the control means 13 (see steps 1000 and 1001 in FIG. 2). When the transmission request signal is transmitted from the automatic notification circuit 12, the control means 13
Referring to the call detection circuit 10, when the call detection signal is being output, the line is in use by the telephone TEL or the like, so that the process stands by until the output of the call detection signal stops (see steps 2000 and 2001 in FIG. 3). . When the output of the call detection signal is stopped, the control means 13 transmits a set signal to the automatic line disconnection means 11 and the timer 11a
The relay RY is driven by the relay contacts ry1, ry
2 is connected to the automatic notification circuit 12 for a required time to close the telephone line, and thereafter, the driving of the relay RY is stopped by the timer 11a for the required time, and the relay contact ry
1 and ry2 are connected to the telephone TEL to release the telephone line (see steps 2002 and 2003 in FIG. 3). Thereafter, the control means 13 sends a transmission command signal to the automatic notification circuit 12, and the automatic notification circuit 12 receives the transmission command signal and automatically makes a call to a supervisory headquarters or the like preset by the automatic calling means. Then, a necessary emergency report is made (see step 2004 in FIG. 3). As described above, according to the emergency notification system A of the present invention, at the time of performing an emergency notification, the telephone line is once closed and then opened regardless of the presence or absence of a call signal. Even if a call is received from the user, the call can be immediately blocked after receiving the call in response to the call, and the circuit configuration can be simplified since there is no need to detect a call signal.

FIG. 4 is a block diagram showing an example of the configuration of the emergency alerting device B according to the second aspect of the present invention. In the configuration of the emergency alerting device A described above, the call detecting circuit 10 is replaced. , Polarity reversal / call detection circuit 10 '
Are provided, and the other configurations are the same. Therefore, the same reference numerals are given and the description is omitted. The polarity reversal / call detection circuit 10 'detects the polarity reversal of the voltage occurring in the telephone line based on the signal transmitted from the photocoupler PC, and thereby detects the polarity reversal when the calling signal arrives, thereby equivalently. The telephone call is detected by detecting the arrival of a call signal at the same time and detecting the fluctuation of the current level of the telephone line due to the pick-up of the handset of the telephone TEL.

The operation of the emergency notification system B according to the present invention having such a configuration will be described with reference to the flowchart of FIG. Either security sensor S1 (S2
When the notification (Sn) is issued, a transmission request signal is transmitted from the automatic notification circuit 12 to the control means 13 (see steps 1000 and 1001 in FIG. 2 described above). When the transmission request signal is transmitted from the automatic notification circuit 12, the control means 13
Referring to the polarity reversal / call detection circuit 10 ', when the call detection signal is being output, the line is being used by the telephone TEL or the like, and the process stands by until the output of the call detection signal stops (step 3000 in FIG. 5). , 3001). When the output of the call detection signal stops, the control means 1
At 3, the set signal is transmitted to the automatic line disconnecting means 11,
The relay RY is driven by the timer 11a to connect the relay contacts ry1 and ry2 to the automatic notification circuit 12 for a required time to close the telephone line.
The driving of the relay RY is stopped for a required time by a, and the relay contacts ry1 and ry2 are connected to the telephone TEL side to open the telephone line (FIG. 5, steps 3002 and 3003).
reference). At the same time, the control means 13 monitors whether or not a polarity inversion signal is output from the polarity inversion / communication detection circuit 10 'while the telephone line is open (step 3004 in FIG. 5).
reference). When the polarity inversion signal is not output from the polarity inversion / communication detection circuit 10 ', the control means 13 immediately sends a transmission command signal to the automatic notification circuit 12, and the automatic notification circuit 12 receives the transmission command signal and performs automatic transmission. The necessary emergency notification is made by automatically calling a supervisory headquarters or the like set in advance by the calling means (see step 3005 in FIG. 5). However, during the opening of the telephone line, the polarity reversal / call detection circuit 1
When the polarity inversion signal is output from 0 ′, the control unit 13 repeats the above operation until it is confirmed that the polarity inversion signal is not output. A transmission command signal is sent to the automatic notification circuit 12, and the automatic notification circuit 12 receives the transmission command signal and automatically calls a predetermined supervisory headquarters or the like by an automatic calling means to perform a necessary emergency notification (FIG. 5
Steps 3002 to 3005). Thus, according to the emergency notification system of the present invention, until immediately before the emergency notification,
Since the presence or absence of a call signal has been confirmed by monitoring the presence / absence of polarity reversal, an emergency report may be started just before the emergency report even though a call signal has arrived from another station. Inconvenience can be prevented beforehand, and
Since there is no need to detect a call signal, the circuit configuration can be simplified.

FIG. 6 is a block diagram showing an example of the configuration of the emergency notification system C according to the third aspect of the present invention. The operation of the control means 13 differs from that of the emergency monitoring system B described above. Since the configurations are the same, the same reference numerals are given and the description is omitted. The control means 13 has a built-in timer (not shown) which counts up a predetermined time after being activated by the internal program processing, and each time the timer counts up, the polarity reversal / call detection circuit 10 '.
And a transmission request signal transmitted from the automatic notification circuit 12 is monitored.

The operation of the emergency notification system C according to the present invention having such a configuration will be described with reference to the flowchart of FIG.
This will be described with reference to FIGS. The control unit 13 monitors whether a transmission request signal is transmitted from the automatic notification circuit 12. When the transmission request signal is not transmitted from the automatic notification circuit 12, the operation returns to the previous operation. However, when the transmission request signal is transmitted, the control means 13 refers to the polarity reversal / call detection circuit 10 '. When the call detection signal is being output, the line is being used by the telephone TEL, and the process stands by until the output of the call detection signal stops (see step 4003 in FIG. 7). When the output of the call detection signal is stopped, the control means 13 monitors whether or not the polarity inversion signal is output with reference to the polarity inversion / call detection circuit 10 '. Sends a transmission command signal to the notification circuit 12,
In response to the transmission command signal, the automatic notification circuit 12 automatically makes a call to a supervisory headquarters or the like set in advance by an automatic calling means to perform a necessary emergency notification (step 4005 in FIG. 7).
4009). However, the polarity reversal / call detection circuit 1
When the polarity inversion signal is output from 0 ', the telephone line is once closed for a required time by the automatic line disconnecting means 11 and then opened for the required time, and it is determined whether or not the polarity inversion signal is detected during the opening. The discriminating operation is repeatedly performed, and when it is confirmed that the polarity reversal signal is not detected, a transmission command signal is transmitted to the automatic notification circuit 12, and the automatic notification circuit 12 receives the transmission command signal and receives the transmission command signal by the automatic calling means. A necessary emergency report is made by automatically calling a preset supervisory headquarters or the like (see steps 4005 to 4009 in FIG. 7). As described above, according to the emergency notification device of the present invention, the presence or absence of a transmission request from the automatic notification circuit is periodically monitored, and when a transmission request is made, the presence or absence of polarity reversal is monitored until immediately before the emergency notification. To confirm that no paging signal has arrived, so that it is possible to prevent the inconvenience of starting an emergency report even if a paging signal has arrived from another station immediately before the emergency report. Is not required to be detected, so that the circuit configuration can be simplified.

[0018]

According to the first aspect of the present invention, at the time of making an emergency report, the telephone line is once closed and then opened, so that even if a call is received from another station,
The call can be forcibly cut off, and the detection of the call signal becomes unnecessary. Therefore, it is possible to provide an emergency automatic notification device with a simplified circuit configuration and improved reliability. According to the present invention as set forth in claim 2, the use status of the telephone line is monitored until immediately before the emergency report, and after the telephone line is once closed,
Further, the telephone line is opened for a predetermined period of time, and during that time, the presence or absence of polarity reversal is monitored to confirm that no call signal has arrived, and then an emergency call is made. Therefore, a call signal comes from another station immediately before the emergency call. It is possible to prevent the inconvenience of starting an emergency report in spite of the fact. Further, since it is not necessary to detect a call signal, it is possible to provide an emergency alerting device with a simplified circuit configuration and improved reliability. According to the third aspect of the present invention, the use state of the telephone line is monitored until immediately before the emergency report, and if the telephone line is not in use state, the polarity inversion is determined. Immediately, an emergency call is started, and when polarity reversal is determined, the telephone line is closed once, and then the telephone line is opened for a further predetermined time, during which time the presence or absence of the polarity reversal is monitored and a call signal is received. Since an emergency call is made after confirming that there is no emergency call, it is possible to prevent the inconvenience of starting an emergency call even though a call signal has arrived from another station immediately before the emergency call. , Claim 2
Can provide an emergency notification device having the same effect as described in (1).

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of an internal configuration of an emergency notification system according to the present invention.

FIG. 2 is a flow chart for explaining the operation of the emergency request device according to the first, second and third aspects of the present invention for issuing a call;

FIG. 3 is a flowchart illustrating an automatic notification operation of the emergency automatic notification device according to the first embodiment of the present invention.

FIG. 4 is a diagram showing an example of the internal configuration of the emergency notification device according to the second aspect of the present invention.

FIG. 5 is a flowchart illustrating an automatic notification operation of the emergency automatic notification device according to the second aspect of the present invention.

FIG. 6 is a diagram showing an example of the internal configuration of the emergency notification device according to the third aspect of the present invention.

FIG. 7 is a flowchart illustrating an automatic notification operation of the emergency automatic notification device according to the present invention.

FIG. 8 is a configuration example diagram of a conventional emergency notification device.

FIG. 9 is a flowchart illustrating an automatic notification operation of the conventional emergency automatic notification device.

[Explanation of symbols]

 Reference Signs List 10 Call detection circuit 10 'Polarity reversal / call detection circuit 11 Automatic line disconnection means 12 Automatic notification circuit 13 Control means A, B, C Emergency automatic notification device S1, S2, Sn Disaster prevention sensor

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takeshi Kuno 1048 Kazuma, Kadoma, Osaka Prefecture Inside Matsushita Electric Works, Ltd. (56) References JP-A-58-165194 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04M 11/00-11/10

Claims (3)

(57) [Claims] 1. A call detection circuit for monitoring the presence or absence of a DC loop current flowing through a telephone line to determine a use state of the telephone line, a line automatic disconnecting unit for closing the telephone line for a required time and then opening the required time. It has automatic calling means for automatically dialing a preset supervisory headquarters, etc., and when receiving an alarm signal from a disaster prevention sensor or the like, an automatic notification circuit for making a transmission request to notify disaster prevention information, and from the above automatic notification circuit When an outgoing call request is received, the call detection circuit confirms that the telephone line has become inactive, and then activates the line automatic disconnection means. An emergency notification device using a telephone line, comprising: control means for notifying information. 2. A polarity reversal / communication detection circuit for detecting polarity reversal of a voltage generated in a telephone line and monitoring the presence or absence of a DC loop current flowing in the telephone line to determine a use state of the telephone line. It has automatic line disconnection means for closing the line for the required time and then releasing it for the required time, and automatic call means for automatically dialing a preset supervisory headquarters, etc., and disaster prevention when receiving a signal from a disaster prevention sensor etc. An automatic notification circuit for issuing a transmission request for reporting information; and a control means for controlling these circuits and means. When the transmission request is received from the automatic notification circuit, the control means controls the polarity. After confirming that the telephone line has become unused by referring to the reverse / call detection circuit,
Activating the line automatic disconnecting means, once closing the telephone line, performing an operation to open for a predetermined time, and during the telephone line open time, determining the presence or absence of the polarity reversal, Until it is determined that there is no reversal, by repeatedly operating the line automatic disconnection means, the closing and opening operations of the telephone line are repeated, and when it is determined that there is no polarity reversal, the automatic notification circuit is activated. An emergency alert system using a telephone line configured to notify disaster control information to the supervision headquarters. 3. A polarity reversal / call detection circuit for detecting polarity reversal of a voltage generated in a telephone line and monitoring the presence or absence of a DC loop current flowing through the telephone line to determine a use state of the telephone line. It has automatic line disconnection means for closing the line for the required time and then releasing it for the required time, and automatic call means for automatically dialing a preset supervisory headquarters, etc., and disaster prevention when receiving a signal from a disaster prevention sensor etc. An automatic notification circuit for issuing a transmission request for reporting information; and a control means for controlling these circuits and means. When the transmission request is received from the automatic notification circuit, the control means controls the polarity. When it is confirmed that the telephone line is in the non-use state by referring to the inversion / call detection circuit, the presence or absence of the polarity inversion is further determined. While operating the circuit to notify the control headquarters of the disaster prevention information, when the polarity reversal is determined, the line automatic disconnection means is operated, and after the telephone line is once closed, an operation of opening for a predetermined time is performed, In addition, during the opening time of the telephone line, the presence / absence of polarity inversion is determined, and the line automatic disconnection means is repeatedly activated until it is confirmed that there is no polarity inversion, thereby closing the telephone line. An emergency automatic notification device using a telephone line configured to repeat the above operation and release operation and, when it is determined that there is no polarity reversal, to activate the automatic notification circuit and notify the supervisory headquarters of disaster prevention information.