JPH0946358A - Emergency information system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To always minimize time required from the output of an emergency signal from a terminal up to its recognition regardless of the increased number of terminals or slave stations. SOLUTION: A base station 1 includes a display part 5 and a data processing part 6 and displays terminal information and emergency information. A repeater master station 2 includes a normal processing part 7, an interrupting processing part 8, a switching part 10, an interruption detecting part 9, and a control part 11, confirms the existence of a terminal information request and an emergency signal to a repeater slave station 3 and trasmits the confirmed result to a base station. The slave station 3 includes a transmitting/receiving part 15 for transmitting/receiving a radio wave, a transmission/reception control part 16 for controlling transmission/reception, a control part 13 for controlling transmission, a terminal information judging part 24 for judging the existence of emergency information, and a transmitting/receiving antenna 21 and transmits terminal information and emergency information to the master station 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency call system, and more particularly to an emergency call system that uses an interrupt-only transmission line to shorten the transmission time of an emergency signal.

[0002]

2. Description of the Related Art With the recent development of a distributed transmission system, many transmission forms form a hierarchy structure including a master station, a plurality of slave stations, and a large number of terminals connected to each slave station. In this type of configuration, generally, information is transmitted by a lower layer in response to a polling command from an upper layer.

FIG. 3 is a block diagram showing a conventional emergency call system.

The conventional emergency call system comprises a base station 1,
The relay device master station 25, the relay device slave station 30, and the terminal 4 are included.

The base station 1 comprises a display unit 5 for displaying terminal information and emergency information, and a data processing unit 6 for controlling data management of the relay device master station 25 and the relay device slave station 30. The relay device master station 25 has a normal processing unit 7 that performs normal operations, an interrupt processing unit 8 that processes an interrupt when an emergency signal is received, a switching unit 10 that switches between normal processing and interrupt processing, and transmission control. It is composed of a control unit 11 for executing.

The relay device slave station 30 includes a transmission / reception unit 15 for transmitting / receiving wirelessly to / from the terminal 4, a transmission / reception control unit 16 for controlling transmission / reception, and a terminal information determination unit 14 for determining information from the terminal 4 and a relay device parent. The transmission / reception antenna 21 includes a control unit 13 for controlling transmission with the station 25 and other relay device slave stations (not shown).

The terminal 4 is composed of an emergency signal generator 17 for generating and transmitting an emergency signal and an antenna 22.

FIG. 4 is a diagram for explaining the processing of FIG. 3, and FIG. 5 is a diagram for explaining the overall configuration of FIG.

FIG. 5 shows a base station 1, a relay device master station 25,
The relay device slave stations 30a to 30c and the terminal 4 are connected. The base station 1 and the relay device master station 25 are connected by the data transmission line 18, and the relay device master station 25 and the relay device slave station 30 are connected.
The data transmission line 29 is connected to a to 30c. The terminal 4 is wirelessly connected to the relay device slave station 30b.

Next, the operation will be described with reference to FIGS. 3, 4 and 5.

The base station 1 is connected to the relay device master station 25 by a single data transmission line 18, and is used to issue an operation start instruction to the relay device master station 25 and receive and display an emergency signal and terminal information. To do.

Further, the relay station master station 25 uses the data transmission line 29 to relay station slave station 30 or relay station slave station 30.
It is connected to a-30c. The relay device master station 25 transmits to the relay device slave stations 30, 30a to 30c a simultaneous search instruction of all terminals to which each of the relay device slave stations 30, 30a to 30c is connected by the control unit 11, and T1 Seconds,
Wait for an emergency signal. After that, relay station master station 2
Reference numeral 5 polls each relay device slave station 30, 30a to 30c for each terminal information request. In response to this polling request, each relay device slave station 30, 30a-30
The control unit 13 of c transmits the terminal information request from the transmission / reception unit 15 and the antenna 21 to each terminal under the transmission control of the transmission / reception control unit 16. The terminal information from each terminal and the information regarding the presence / absence of an emergency signal are received by the transmitting / receiving unit 15 from the antenna 21, and are decoded by the transmitting / receiving unit 16 and then the control unit 1
The reception signal 23 is output to the No. 3. When the terminal information determination unit 14 of the control unit 13 detects that the received signal 23 includes the emergency signal, the terminal information determination unit 14 determines whether the emergency signal is present through the data transmission line 29 of the relay device master station 25. It is transmitted to the control unit 11.

As described above, the relay device slave stations 30, 30a ...
30 c collects terminal information from the terminal 4 and the presence / absence of an emergency signal transmitted by the emergency signal generator 17 included in the terminal 4, and transmits the information to the relay device master station 25 through the data transmission line 29. In addition, the relay device master station 25 is a relay device slave station 3
By polling 0, 30a to 30c, the operation of sequentially collecting the position information of the terminals designated for polling and the presence / absence of an emergency signal is performed.

Here, the relay station slave stations 30, 30a to 30 which have received the emergency signal from terminals other than the terminal designated for polling.
If c exists, after all polling is completed, the T1 seconds after the start of the simultaneous search instruction of the relay device master station 25 are used, and the ID numbers of the relay device slave stations 30, 30a to 30c and the emergency signal are transmitted. The signal to which the ID number of the relayed terminal is added is transmitted through the data transmission line 29 to the relay station master station 2
5 to the control unit 11.

The relay device master station 25 suspends polling by the control operation of the control unit 11, switches the operation of the normal processing unit 7 to the interrupt processing unit 8 by the switching unit 10, and transmits the transmission line 1
An emergency signal is sent to the base station 1 via 8. The base station 1 receiving the emergency signal displays the emergency signal on the display unit 5.

That is, the emergency signal is recognized by the base station 1 during T2 seconds during this period.

As another example of such an emergency call system, the "disaster prevention monitoring device" described in JP-A-5-6493 is known. In this gazette, when a specific terminal detects urgent terminal information such as a fire or gas leak, an interrupt signal is received from the terminal by using a predetermined time band during transmission of a call signal from the receiver. The receiver quickly identifies the terminal that detected the abnormality based on the reception of the interrupt signal, and returns detailed information indicating the cause of the interrupt from the terminal to shorten the time from abnormality detection to abnormality determination. The technology is described.

[0018]

The conventional emergency call system described above uses a single wire to perform simultaneous search instructions, polling, and waiting for an emergency signal to the terminals of each relay device slave station. Since it is divided, if the number of terminals increases or the number of relay device slave stations increases,
Since it takes time to poll, there is a drawback that it takes time for the base device to recognize the terminal that is transmitting the emergency signal.

Further, since the interrupt is not a dedicated line, signals other than the interrupt signal are transmitted, and it takes time because confirmation is performed several times in consideration of erroneous notification due to transient noise generated on the transmission path. There is.

An object of the present invention is to provide an emergency call system capable of always setting the time until the emergency signal from the terminal is recognized to a minimum time and eliminating false alarms, regardless of the number of terminals and the number of slave stations. To do.

[0021]

An emergency call system according to the present invention comprises a base station for displaying and processing information; a normal processing section for performing normal processing of the information; and an interrupt processing section for performing emergency processing. A switching unit that switches between the normal processing unit and the interrupt processing unit, and a control unit that controls the switching unit,
A relay master station connected to the base station by wire and connected to a first transmission line; a transmitter / receiver unit for receiving emergency information wirelessly transmitted from a plurality of terminals, and a transmission / reception control unit for controlling transmission / reception. And a plurality of relay slave stations that report the emergency information to the relay master station via the first transmission line, and a control unit that determines whether or not there is an emergency signal; and the terminal that transmits the emergency information. And a second transmission line connecting the relay master station and the plurality of relay slave stations; and the relay slave station receiving the emergency information from the terminal, the first transmission line; The transmission line is switched to the second transmission line, and switching means for transmitting to the master station is included; the master station has detection means for detecting the emergency information.

The second transmission line is a dedicated line that only transmits the emergency information.

[0023]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the emergency call system of the present invention.

The present embodiment shown in FIG. 1 includes a base station 1,
The relay device master station 2, the relay device slave station 3, and the terminal 4 including the emergency signal generator 17 and the antenna 22 are included.

The base station 1 comprises a display unit 5 for displaying terminal information and emergency information, and a data processing unit 6 for controlling data management of the relay device master station 2 and the relay device slave station 3. The relay device master station 2 has a normal processing unit 7 that performs normal operations, an interrupt detection unit 9 that detects an emergency signal interrupt, an interrupt processing unit 8 that processes an interrupt when an emergency signal is received, and a normal processing and It comprises a switching unit 10 for switching interrupt processing and a control unit 11 for controlling transmission.

The relay device slave station 3 transmits / receives wirelessly to / from the terminal 4, a transmission / reception control unit 16 that controls transmission / reception, and a terminal information determination unit 1 that determines information from the terminal 4.
4, a control unit 13 for controlling transmission with the relay device master station 2 and other relay device slave stations (not shown), and a transmission line at the time of interruption from the data transmission line 19 to the interrupt dedicated line 2
It is composed of a switching unit 12 for switching to 0 and a transmitting / receiving antenna 21.

In FIG. 1, components corresponding to those shown in FIG. 3 are designated by the same reference numerals or symbols, and their description will be omitted.

FIG. 2 is a diagram for explaining the overall configuration of FIG.

FIG. 2 includes a base station 1, a relay device master station 2, relay device slave stations 3a to 3c, and a terminal 4. The base station 1 and the relay device master station 2 are connected by a data transmission line 18. The relay device master station 2 and the relay device slave stations 3a to 3c are connected by a data transmission line 19 and an interrupt dedicated line 20. The terminal 4 is wirelessly connected to the relay device slave station 3b.

Next, the operation will be described with reference to FIGS.

The base station 1 has a display unit 5 for displaying terminal information and emergency information, a relay device master station 2 and a relay device slave station 3,
It has a data processing unit 6 for performing data management control of 3a to 3c, and is connected to the relay device master station 2 by a data transmission line 18.

The base station 1 receives the information of the terminal 4 from the relay station slave station 3 transmitted through the normal processing section 7 of the relay station master station 2, and receives the ID number of the relay station slave station 3 as well as the ID number of the relay station slave station 3. It is displayed on the display unit 5.

When the data processing unit 6 receives an emergency signal from the interrupt processing unit 8 of the relay device master station 2, the display unit 5 displays an emergency.

The terminal 4 includes an emergency signal generator 1 included therein.
When 7 detects an emergency, an emergency signal is wirelessly transmitted to the relay station slave station 3 via the antenna 22.

The repeater slave station 3 sends an emergency signal to the antenna 2
When it is received by the transmission / reception unit 15 via 1, the transmission / reception control unit 16 decodes it and outputs a reception signal 23 to the control unit 13.

When the terminal information judging section 14 of the control section 13 detects that the received signal 23 contains an emergency signal, the terminal information judging section 14 causes the switching section 12 to switch from the data transmission line 19 to the interrupt dedicated line. 20 and requests the relay device master station 2 for interrupt processing.

In the relay device master station 2, when the interrupt detector 9 detects an interrupt processing request, it outputs an interrupt signal 24 to the controller 11. The control unit 11 switches the operation of the normal processing unit 7 to the interrupt control unit 8 with respect to the switching unit 10 and transmits an emergency signal to the base station 1 through the data transmission line 18.

When the interrupt processing unit 8 is switched to, the control unit 11 of the relay device master station 2 suspends the polling operation up to that point, opens the data transmission line 19, and uses this data transmission line 19 to interrupt. Inquiries are made to the relay station slave station 3 that has called to collect the information of the terminal 4.

As a normal operation, the relay device slave station 3 searches for the terminal 4 in response to the simultaneous search instruction from the relay device master station 2 for the terminal 4, and the ID number of the terminal 4 is added to the ID number of the local station as position information at the time of polling. Is added and transmitted to the relay device master station 2.

When a plurality of relay device slave stations 3a to 3c which have simultaneously received the emergency signal from the terminal 4 simultaneously send the interrupt signal to the relay device master station 2, the relay device slave station which has transmitted the interrupt signal. 3a to 3c send out a signal including the ID number of the own station using the opened data transmission line 19. After transmitting, the relay device slave stations 3a to 3c respectively receive the signals transmitted by the relay device master station 2 on the released data transmission line 19, and the ID numbers of the relay device slave stations included in the signals and their own stations. The ID number is compared and, for example, the relay device slave station 3b
If the ID number matches the ID number of the relay device, the relay device slave station 3b can transmit the terminal information to the relay device master station 2 in preference to the relay device slave stations 3a and 3c. .

[0042]

As described above, in the emergency call system of the present invention, since an emergency signal can be notified by using the interrupt dedicated line and no other signal is transmitted to the interrupt dedicated line, the number of terminals and the number of terminals can be reduced. It has an effect that the time until the emergency signal from the terminal is always recognized can be minimized and malfunction can be prevented regardless of the increase in the number of stations.

[Brief description of drawings]

FIG. 1 is a block diagram showing one embodiment of an emergency call system according to the present invention.

FIG. 2 is a diagram illustrating the overall configuration of FIG.

FIG. 3 is a block diagram showing a conventional emergency notification system.

FIG. 4 is a diagram for explaining the process of FIG. 3;

5 is a diagram illustrating the overall configuration of FIG.

[Explanation of symbols]

 1 base station 2 relay device master station 3, 3a, 3b, 3c relay device slave station 4 terminal 5 display unit 6 data processing unit 7 normal processing unit 8 interrupt processing unit 9 interrupt detection unit 10 switching unit 11 control unit 12 switching Part 13 Control part 14 Terminal information judgment part 15 Transmission / reception part 16 Transmission / reception control part 17 Emergency signal generation part 18, 19 Data transmission line 20 Interrupt dedicated line 21,22 Antenna 23 Received signal 24 Interrupt signal 25 Relay device master station 29 data Transmission line 30, 30a, 30b, 30c Relay device Slave station

Claims (2)

[Claims] 1. A base station for displaying and processing information; a normal processing unit for performing normal processing of the information, an interrupt processing unit for performing emergency processing, and switching between the normal processing unit and the interrupt processing unit. A relay master station that includes a switching unit and a control unit that controls the switching unit, and that is connected to the base station by wire and is connected to the first transmission line; and each is an emergency wirelessly transmitted from a plurality of terminals. A transmission / reception unit that receives information, a transmission / reception control unit that controls transmission / reception, and a control unit that determines the presence / absence of an emergency signal, and notify the relay master station of the emergency information via the first transmission line. An emergency call system comprising: a plurality of relay slave stations; and a terminal that transmits the emergency information; a second transmission line connecting the relay master station and the plurality of relay slave stations; When the mobile station receives the emergency information from the terminal Receiving a report, switching the first transmission line to the second transmission line and transmitting the signal to the master station; the master station having a detecting means for detecting the emergency information; Emergency call system. 2. The emergency notification system according to claim 1, wherein the second transmission line is a proprietary line that only transmits the emergency information.