JP2008160177A - Emergency notifying system and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an emergency notifying system which can use a standard AT command modem and can communicate with a specific emergency notifying system from the center unit side, and to provide an emergency notification method. <P>SOLUTION: The emergency notifying system, comprising a plurality of emergency call devices installed on the supervised side, and a center unit installed on the supervising side and connected with the plurality of emergency call devices through a public telephone line, is further provided with an inter-device communication means 6 for interconnecting the plurality of emergency call devices 2. The emergency call device comprises: a switching means 21 for connecting only one of the plurality of emergency call devices with the same public telephone line 4; a standard AT command modem 23 for transmitting/receiving data to/from the center unit 3; and a processing means 24 for turning the switch means of own device off after finishing communication, when own device is a master unit, and turning the switch means of a predetermined other device on via the inter-device communication means. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an emergency call system and an emergency call method that can be preferably used when, for example, the state or abnormality of an elevator or building equipment is remotely monitored or controlled via a public telephone line.

  As a conventional emergency call system, in an emergency call device for remotely monitoring the state or abnormality of an elevator or building equipment from a maintenance center via a telephone line, network control means connected to the maintenance center via a telephone line; A transmission means for transmitting data using the maintenance center, modem and PB signal via the network control means; a level detection means for detecting presence / absence of a signal on the line via the network control means; and the PB signal There is one provided with a measuring means for measuring the reception width of the signal and a central processing means for controlling each of the means (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2003-348262 (first page, FIG. 1)

  In the conventional emergency call system as described above, when a center device requests information from a specific building side emergency call device connected to a single telephone line on the building side, it first becomes a representative (master unit). Communicates with the building emergency call device, performs communication for switching the telephone line to the specific emergency call device with the master unit using the modem signal, and switches the telephone line to the specific emergency call device. At this time, since a standard AT command modem can only communicate once with a single telephone connection, there is a problem that a modem with a special function must be used to realize these operations. It was.

  The present invention has been made to solve the above-described problems of the prior art, and can be used with a standard AT command modem and can communicate with a specific emergency call device to be communicated from the center device side. The purpose is to obtain a reporting system and emergency reporting method.

  The emergency call system according to the present invention includes a plurality of emergency call devices installed on the monitored side, and a center device installed on the monitoring side and connected to the plurality of emergency call devices via a public telephone line. The emergency call system includes inter-device communication means for connecting the plurality of emergency call devices to each other, and the emergency call device connects only one of the plurality of emergency call devices to the same public telephone line. Switching switch means, a standard AT command modem for transmitting / receiving data to / from the center apparatus, and after communication is terminated when the own machine is a parent machine (parent machine), the changeover switch means of the own machine is turned OFF, And processing means for controlling the changeover switch means of a predetermined other machine to ON via the inter-device communication means.

  In the present invention, there is provided inter-device communication means for connecting a plurality of emergency call devices to each other, and a changeover switch means for connecting only one of the plurality of emergency call devices to the same public telephone line; After the communication is completed when the own device is the parent device, processing means for turning off the changeover switch means of the own machine and turning on the changeover switch means of a predetermined other machine through the inter-device communication means is provided once By switching the parent machine at the next connection after the modem communication is completed, a standard AT command modem can be used, and communication with a specific emergency call device to be communicated from the center device is possible. In addition, since a standard AT command modem having no special operation can be used, the system configuration is simple and the cost can be reduced.

Embodiment 1 FIG.
FIG. 1 is a block diagram conceptually showing the main part of an emergency call system according to Embodiment 1 of the present invention. In the figure, an emergency call system 1 includes an emergency call device 2 (# 1 unit 2a, # 2 unit 2b, # 3 unit 2c) installed on a monitored side such as a building, and a center device 3 installed on a monitoring side. And a public telephone line 4. In this example, three emergency call devices 2 are provided, # 1 unit 2a, # 2 unit 2b, and # 3 unit 2c, and are connected in parallel to the telephone line 5 in the building. Further, they are connected by inter-device communication means 6 for communicating among # 1 machine 2a, # 2 machine 2b, and # 3 machine 2c. The # 1 machine 2a, # 2 machine 2b, and # 3 machine 2c have a changeover switch means 21 (21a) for switching which of the # 1 machine 2a, # 2 machine 2b, and # 3 machine 2c is connected to the public telephone line 4. 21c), network control unit 22 (22a-22c) such as NCU for connecting to public telephone line 4, standard AT command modem 23 (23a-23c) for communicating with monitoring center unit 3, and switching The central processing unit 24 (24a-24c) as a processing means for controlling the switch means 21 (21a-21c) and information is provided.

  The central processing units 24a to 24c receive signals such as predetermined monitoring target states and abnormality information selected as desired from elevators, escalators, and other equipment not shown in the drawings, and are processed. After communication is completed when each of the emergency call devices 2a to 2c is a master device, the switch switch means 21a, 21b, or 21c of the own device is turned off, and a predetermined other device is switched via the inter-device communication means 6. Control is performed so that the switch means 21a, 21b, or 21c is switched ON. On the other hand, the center device 3 has a network control device 32 for connecting to the public telephone line 4, a modem 33 for communicating with the emergency call devices 2a to 2c, and a central processing for processing information, for example, as in the conventional device. The apparatus 34 etc. are provided.

  Next, the operation of the first embodiment configured as described above will be described. First, when the # 1 machine 2a of the emergency notification device 2 on the monitored side (building side) operates as a parent machine, the changeover switch means 21a is in an ON state. When the center device 3 makes a patrol data request to each of the # 1 unit 2a, # 2 unit 2b, and # 3 unit 2c, when the center unit 3 makes a call to the emergency call unit 2, the # 1 unit 2a that is the current parent unit is respond. The request data is transmitted to the center apparatus 3 by the standard AT command modem 23a, and the # 1 machine 2a ends the communication. Thereafter, the # 1 machine 2a uses the inter-device communication line 6 to communicate with the # 2 machine 2b, transfers the parent machine to the # 2 machine 2b, turns off the changeover switch means 21a, and turns on the changeover switch means 21b.

  Similarly, when the center apparatus 3 makes a call to the emergency call apparatus 2 next time, the # 2 machine 2b, which is the current parent machine, responds, and the request data is transmitted to the center apparatus 3 by the standard AT command modem 23b, and the # 2 machine 2b. Ends the communication. Thereafter, the # 2 machine 2b uses the inter-device communication line 6 to communicate with the # 3 machine 2c, transfers the master unit to the # 3 machine 2c, turns off the changeover switch means 21b, and turns on the changeover switch means 21c. By repeating these operations, the center device 3 cyclically communicates with each of the # 1 unit 2a, # 2 unit 2b, and # 3 unit 2c of the monitored emergency notification device 2 to perform emergency communication for each connection. Data of the reporting devices # 1 machine 2a, # 2 machine 2b, # 3 machine 2c is collected.

  As described above, according to the first embodiment, a plurality of emergency call devices # 1 # 2a, # 2 # 2b, # 3 # 2c are connected to the same public telephone line 4, and only one of them is public. Which of the change-over switch means 21a to 21c for connecting to and communicating with the telephone line 4, the standard AT command modems 23a to 23c for transmitting / receiving data to / from the center apparatus 3, and the emergency call apparatus connected to the same public telephone line 4 By providing the inter-device communication line 6 for deciding whether to use a telephone line and the central processing units 24a to 24c for controlling them, communication from the center device 3 is possible even when the standard AT command modems 23a to 23c are used. You can communicate with the specific emergency call device you want. In addition, since the standard AT command modems 23a to 23c can be used, the system configuration is simple and inexpensive.

Embodiment 2. FIG.
In the emergency call system of the first embodiment shown in FIG. 1, while cyclic communication is sequentially performed for a plurality of monitored emergency call devices 2, this second embodiment is The data can be requested to a specific emergency call device, and the H / W configuration is the same as that in FIG. 1, and will be described below with reference to FIG.
That is, in the second embodiment, a case will be described in which the monitoring center device 3 requests data from a specific emergency reporting device among the monitored emergency reporting devices # 1 # 2a, # 2b, # 3 2c. . First, when the emergency call device # 1 machine 2a operates as a parent machine, the changeover switch means 21a is in an ON state, and the other changeover switch means 21b and 21c are in an OFF state. In addition, a description will be given of a case where the specific partner requesting communication is # 3 machine 2c.

  When the center device 3 makes a call to the emergency call device 2, the emergency call device # 1 No. 2a which is the current parent device responds. The # 1 machine 2a performs data communication with the center apparatus 3 by the standard AT command modem 23a, and the center apparatus 3 is notified that it is a communication request to the emergency call apparatus # 3 machine 2c. # 1 machine 2a finishes communication, and then # 1 machine 2a uses inter-device communication line 6, communicates with # 3 machine 2c, hands over the master unit to # 3 machine 2c, and turns off changeover switch means 21a. The changeover switch means 21c is turned on. Similarly, when the center device 3 makes a call to the emergency call device 2 next time, the emergency call device # 3 machine 2c which is the current parent device responds and transmits the request data to the center device 3 by the standard AT command modem 23c. # 3 machine 2c finishes communication. By this operation, the center device 3 can collect data of the # 3 machine 2c of the specific emergency call device on the monitored side. It should be noted that the order can be changed only when a specific emergency call device is designated from the center device 3, and if there is no designation, cyclic communication can be performed cyclically as in the first embodiment.

  As described above, according to the second embodiment, the monitoring-side center device 3 is arbitrarily selected from among the plurality of emergency call devices # 1 machine 2a, # 2 machine 2b, and # 3 machine 2c provided on the monitored side. Data can be requested from a specific emergency call device and data can be collected at the next communication from the requested party. For this reason, in addition to the same effect as in the first embodiment, for example, even when the number of monitored emergency call devices is large, there is an effect that necessary information can be obtained early from a specified specific emergency call device. .

  In the above embodiment, the case where three monitored emergency notification devices 2 are installed is illustrated, but the number of emergency notification devices is not particularly limited. In addition, when the monitoring target is an elevator, for example, the emergency call device 2 is installed as many as the number of elevators installed as a typical installation example, but by changing the circuit configuration, for example, a central processing unit (processing means) Monitoring targets such as a plurality of elevators can be monitored and controlled. Further, although the central processing unit 24 is used as the processing means, it is not necessarily limited to this.

It is a block diagram which shows notionally the principal part of the emergency call system by Embodiment 1 of this invention.

Explanation of symbols

  1 emergency call system, 2 emergency call device (2a # 1 machine, 2b # 2 machine, 2c # 3 machine), 21 (21a, 21b, 21c) changeover switch means, 22 (22a, 22b, 22c) network control device, 23 (23a, 23b, 23c) Standard AT command modem, 24 (24a, 24b, 24c) Central processing unit (processing means), 3 Center unit, 32 Network control unit, 33 Modem, 34 Central processing unit, 4 Public telephone line , 5 In-building telephone line, 6 Inter-device communication means.

Claims (5)

  In an emergency call system comprising a plurality of emergency call devices installed on the monitored side and a center device connected to the plurality of emergency call devices installed on the monitoring side via public telephone lines, the plurality of emergency call devices In addition to inter-device communication means for connecting the reporting devices to each other, the emergency reporting device comprises a changeover switch means for connecting only one of a plurality of emergency reporting devices to the same public telephone line, and the center Standard AT command modem for transmitting / receiving data to / from the device, and after the communication is completed when the own device is the parent device, the switch switch means of the own device is turned OFF and a predetermined other device is switched via the inter-device communication means. An emergency notification system comprising processing means for controlling the switch means to be ON.   2. The emergency call system according to claim 1, wherein the processing means controls the change-over switch means of the other machine to be turned on so that the plurality of emergency call devices are sequentially set as a parent machine.   The processing means controls the change-over switch means of the other machine to be turned on so that a specific other machine requested by the center apparatus among the plurality of emergency call apparatuses becomes a parent machine. Item 1. The emergency call system according to item 1.   4. The emergency call according to claim 1, wherein the processing means includes a central processing unit that processes information from a monitoring target and performs a response process to a request from the center unit. system.   In an emergency call method for making an emergency call through a public telephone line from a plurality of emergency call devices installed on the monitored side to a center device installed on the monitoring side, the plurality of emergency call devices are connected to each other. Provided with inter-device communication means, and provided with a standard AT command modem for each of the plurality of emergency call devices, and dynamically switching the line reception right of the plurality of emergency call devices via the inter-device communication means An emergency call method characterized by transmitting the information to the monitoring side.

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