JPH0158557B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an emergency call response system for centrally monitoring emergency conditions detected at terminals at a center.

Conventional technology and problems In security systems, etc., emergency situations such as fire and gas leaks detected by a large number of sensors are called from a terminal device to a monitoring center via a telephone line to make an emergency report, or the monitoring center makes an emergency call. An emergency call response system is used that sends a report from a terminal device according to the situation.

1 and 2 show typical conventional emergency call response systems. FIG. 1 shows an emergency call response system using digital codes, in which 1 is a terminal station consisting of a control section 2, a digital code transmitting/receiving section 3, a network control section 4, and an automatic dialing section 5. sensors S ₁ , S ₂ ,...,
S _o is connected, and the network control unit 4 is also connected to the center office 7 via the telephone line 6. The center station 7 consists of a network control section 8, a digital code transmitting/receiving section 9, a control section 10, an automatic dialing section 11,
The network control unit 8 is connected to the telephone line 6, and the control unit 10 also has a display device 12 and a printer 13.
is connected. Further, disconnectors 14 and 15 are provided at the connection between the terminal station 1 and the telephone line 6 and between the telephone line and the center station 7, respectively.
Telephones 16 and 17 are connected via terminals 4 and 15, respectively.

In the emergency call response system shown in FIG. 1, when an emergency call is made from the terminal station 1 to the center station 7, the control unit 2 is activated by a signal from a sensor that detects an event to automatically dial the 5 and dial the telephone number of the center station 7. In the center office 7, a network control unit 8 operates in response to a call signal from an exchange (not shown) intervening on the telephone line 6 to establish a connection state. At this time, the network control units 4 and 8 perform control such as switching on and off the switch and detecting polarity reversal of the line from the exchange.

When the connection of the telephone line 6 is completed, the control section 2 activates the digital code transmitting/receiving section 3, and the digital code transmitting/receiving section sends out a digital code corresponding to the emergency report to be sent. In the center station 7, the digital code transmitter/receiver 9 receives the code, decodes it, and sends it to the controller 10. The controller 10 visually or otherwise displays the code on the display device 12, and prints it out on the printer 13. .

On the other hand, when calling the terminal station 1 from the center station 7, the telephone number of the terminal station 1 is dialed from the automatic dialing section 11, and the connection with the terminal station 1 is established by following the same procedure as described above. After performing this, the digital code transmitting/receiving section 9 sends out a digital code corresponding to the required report. The digital code transmitter/receiver 3 receives this, decodes it, and sends it to the controller 2.
The information from the designated sensor is then sent as a digital code to the center station 7 via the digital code transmitting/receiving section 3. Center station 7
The digital code transmitter/receiver 9 receives this, decodes it, and displays or prints it out.

Furthermore, when performing voice communication between the terminal station 1 and the center station 7 via telephones, the telephones 16 and 17 are connected by disconnectors 14 and 15, respectively, so that the voice communication can be performed via the telephones. It is now possible to do so.

FIG. 2 shows an emergency notification system using audio signals, in which the same parts as in FIG. 1 are designated by the same numbers and their operation is also the same as in FIG. Reference numeral 18 indicates an audio signal generator.

In the emergency notification system shown in Figure 2,
When making an emergency call from the terminal station 1 to the center station 7, dialing is performed in the same manner as in FIG. 1 to establish a connection with the center station 7, and then
The control section 2 activates the audio signal generation section 18. The audio signal generating section 18 stores several types of messages corresponding to the contents of the report, and selects and sends messages depending on the emergency report to be sent. The message can be arbitrarily created by, for example, voice synthesis. Therefore, in this case, the center station only needs the telephone 17 to receive emergency calls from the terminal stations.

In this way, conventional emergency call response systems include:
There are two types of notification signals: one is a digital code, and the other is an audio signal. In the former case,
Since the reporting signal is composed of digital codes, it is possible to report much faster than the latter, which uses audio signals, but it does not rely on dedicated monitoring equipment installed at the center. Until then, we cannot know the details of the report. Therefore, when the system of the monitoring device at the center goes down, the contents of reports from the terminal stations cannot be known. Furthermore, it is impossible to call the terminal device from a general public telephone other than the center and check the contents of the report by voice.

In the case of the latter voice reporting method, the center is equipped with only regular telephones and the content of reports from each terminal can be monitored manually, so special monitoring equipment must be installed at the center. does not require It is also possible to call the terminal device from a general public telephone other than the center and check the contents of the report by voice. However, in the case of the latter method, the time required for one report is significantly longer than that of a method using digital codes, and when the number of terminals increases, it becomes difficult to manage the contents of the report manually at the center. .

Purpose of the Invention The present invention aims to solve the problems of the prior art, and its purpose is to enable monitoring by a dedicated monitoring system and manual monitoring at the center station to be performed using the same terminal device. It is possible to support both types of monitoring, so even if the dedicated monitoring system at the center station goes down, monitoring operations can continue, and the terminal station can be called from a general public telephone other than the center station using voice signals. An object of the present invention is to provide an emergency call response system that allows the user to check the contents of a report.

Embodiment of the Invention FIG. 3 shows the configuration of an embodiment of the emergency call response system of the present invention. In the same figure,
The configuration of the center station 7 is the same as that shown in FIG.
In the terminal station 1, the same parts as in FIGS. 1 and 2 are indicated by the same numbers, 19 is a center identification section, and 20 is an internal switch.

Further, FIG. 4 shows a notification response procedure by the emergency notification response system of the present invention, in which 1 is the notification procedure when the center is normal, and 2 is the response procedure when the center is normal. 3
1 shows the procedure for notifying the center station when the system is down, and the center side performs manual monitoring using telephones. 4 shows a response procedure when the center side performs manual monitoring using a telephone when the center station's system is down, or a response procedure for a call from a general public telephone other than the center.

When the monitoring system of the center station is operating normally, if an event such as a fire or gas leak occurs due to the sensor connected to the terminal station 1, or during regular reporting, the control unit at the terminal station 2 activates the automatic dialing section 5 and calls the center station via the network control section 4. After the predetermined calling/receiving procedures are performed between the network control unit 8 of the center station, the telephone exchange (not shown) intervening in the telephone line 6, and the terminal station network control unit 4, and the mutual lines are connected, the terminal station control In the unit 2, an internal timer is activated, and the center identification unit 19 monitors whether or not a center identification signal is sent from the center station within a certain period of time after the line is connected. On the other hand, the center station 7 sends a center identification signal to the terminal station within a certain period of time after the line is connected. The center identification signal may be a combination of digital codes or may be a constant frequency signal. When the terminal station 1 receives the center identification signal within the predetermined time set by the above-mentioned timer, it transmits the contents of the report to the center station 7 in the form of a digital code.
The above procedure is shown in FIG. 41.

When the monitoring system of the center station is operating normally, the response procedure when the center station calls the terminal station 1 by automatic dialing and makes it respond when necessary is as shown in Figure 4-2. . The difference from the case shown in FIG. 4 is that the center station 7
The only difference is that the dial transmitter functions as a dial transmitter, and the procedure and device operation after line connection are exactly the same as in the case of FIG. 41.

When the monitoring system at the center station goes down, the monitoring staff disconnects the telephone 17 using the disconnector 15.
Switch to the side and perform manual monitoring. When the occurrence of an event such as a fire or a gas leak is detected by the sensor at the terminal station 1, or when a scheduled report is made, the center station 7 is called in the same manner as explained in FIG. When the line is connected by following the procedure, the control unit 2 of the terminal station starts an internal timer, and the center identification unit 19 determines whether or not a center identification signal is sent from the center station within a certain period of time after the line is connected. I'm monitoring what's going on. On the other hand, center station 7
When the supervisor picks up the handset of the telephone 17, the line is connected, and no special center identification signal is sent. Therefore, the terminal station 1 cannot detect the center identification signal within the predetermined time set by the above-mentioned timer, so the timer goes up. The system connects to the network and reports via audio signals. The above procedure is shown in FIG. 4.

Further, if the monitoring system of the center station goes down, the monitoring staff calls the terminal station using the telephone 17 of the center station and makes it respond, as shown in FIG. It is also possible to call the terminal station from a general public telephone other than the center station and have it respond. In this case, even if the telephone number of terminal station 1 is dialed from the telephone and the prescribed call/receive procedure is performed with the telephone exchange network (not shown), and the lines are connected, the telephone does not call the special center. Since the identification signal is not sent out, the terminal station 1 is unable to detect the center identification signal within the predetermined time after the line is connected, and the timer goes up and the terminal station 1 follows the same operating procedure as shown in Figure 4.3. and responds with an audio signal.

Effects of the Invention As explained above, according to the emergency call response system of the present invention, the center identification signal is transmitted from the center station within a predetermined time after the line is connected, and the center identification signal is received within the predetermined time after the line is connected. If the terminal station connected to the line detects a center identification signal within a predetermined time, it will notify using a digital code, and if the center identification signal is not detected within a predetermined time, Since the notification is made by voice signal when the terminal station is in use, the same terminal station equipment can support both monitoring methods, including monitoring by a dedicated monitoring device at the center station and monitoring by humans. Therefore, even if the dedicated monitoring device of the center station goes down, monitoring operations can be continued. Furthermore, it is possible to call the terminal station from a general public telephone other than the center station and confirm the contents of the report using the voice signal.

[Brief explanation of drawings]

1 and 2 are diagrams showing the configuration of a conventional emergency call response system, respectively, FIG. 3 is a diagram showing the configuration of an embodiment of the emergency call response system of the present invention, and FIG. 4 is a diagram showing the configuration of an embodiment of the emergency call response system of the present invention. It is a diagram showing a report response procedure by the report response system. DESCRIPTION OF SYMBOLS 1...Terminal station, 2...Control unit, 3...Digital code transmitter/receiver unit, 4...Network control unit, 5...Auto dial unit,
6... Telephone line, 7... Center office, 8... Network control unit, 9
...Digital code transmitting and receiving section, 10...Control section, 11
. . . automatic dialing section, 12 .

Claims (1)

[Claims] 1 A center station and multiple terminal stations are connected via a subscriber telephone network, and any terminal station automatically calls the center station and reports, and the center station calls any terminal station and automatically reports. In the emergency call response system, the center station is provided with means for transmitting a center identification signal within a predetermined time after the line is connected, and means for detecting whether the center identification signal is received within the predetermined time after the line is connected. It is installed in each terminal station, and when the terminal station connected to the line detects a center identification signal within a predetermined time, it sends a notification using a digital code, and when it does not detect a center identification signal within a predetermined time, it sends an audio signal. An emergency call response system characterized by reporting by.