KR920002209B1 - Integrated remote services system - Google Patents

Abstract

outputting a first tone and a third tone to a subscriber interface section (23) for taking proper actions; outputting a work request message, and receiving a work result message from the interface section (23) upon detecting no of retransmission request; issuing a re-transmission request to the subscriber interface section (23) upon detecting an error; issuing a work termination message upon detecting no error; requesting a warning state message upon receiving a second tone after issuing a first tone; issuing a re-transmission request to the interface section (23) upon detecting an error during the inputting of the second tone; and issuing a work termination message upon detecting no error.

Description

Subscriber remote alarm service method in comprehensive remote information service system

1 is a configuration diagram of a conventional remote meter reading system.

2 is a system configuration according to the present invention.

3 is a communication flowchart of the present invention.

4 is a flow chart of FIG.

* Explanation of symbols for main parts of the drawings

20: control unit 21: multiplexer

22: main distribution 23: subscriber interface unit

24: phone 25: telemeter

26 sensor 27 terminal

28: alarm 29: display and switch

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a comprehensive remote information service system, and more particularly, to a method for providing tele-alarm service using a telephone line of subscribers of private and local exchanges.

The conventional remote meter reading system will be described below with reference to FIG. 1 in a manner using a test desk line of a national exchange. The host computer 1 manages the entire system, and the utility center 3 is a company that manages the remote meter reading service. The host computer 1 is a computer such as KEPCO, Gas Corporation, and Water Works.

The switch matching device 8 substantially commands the remote reading and is interfaced with the switching device 5 to receive the reading result by communication with the terminal and transmit it to the host computer 1. The test desk line 6 accommodated in the exchanger 5 is a test line for holding a subscriber without a ring, and the premises equipment 11 performs modem communication with the switch matching device 8 to read a meter reading command. Is received and transmitted to the exchange matching device 8 without the meter reading of each meter of the meter 13. In the operation of the above configuration, in order to read the meter, the utility center 3 sends a meter reading command to the host computer 1 through the line 2.

The host computer 1 transmits the subscriber information desired for meter reading in the exchange matching device 8 via the line 4. After receiving the information from the switch matching device 8, the test desk line 6 is controlled through the line 7 to hold the telephone line 9.

In this operation, the exchange matching device 8 causes the indoor equipment 11 to be activated, transmits information of the meter 13 desired to be substantially read by the exchange matching device 8, and the measured value read by the indoor equipment 11. The exchange matching device 8, which receives this, transfers it back to the host computer 1 via the line 4. The host computer 1 transmits the metered reading to the utility center 3 via the line 2. In this case, since the method of controlling the test desk line 6 through the line 7 varies according to the type of exchange, the structure of the exchanger 8 is essential. In addition, in order to catch the telephone line 9, since the subscriber's telephone number needs to be dialed, it takes a lot of time, so the total meter reading time is also long. Therefore, when communicating remotely with the terminal in the home by using the test desk line of the switch, the structure of the system is changed according to the switch type. In addition, the use of test desk lines is currently unclear due to the fact that each exchange bureau is unclear, and there have been many problems in realizing them, such as the expansion of test desk lines or the use of time zones due to remote meter reading. There is a problem that additional services are difficult to realize.

Therefore, an object of the present invention by using the telephone line of the exchange to detect and notify the occurrence of emergency alarm status in each home regardless of the type of switch, so that the remote information service can serve even large subscribers The present invention provides a subscriber remote alert service method in a comprehensive remote information service system.

Hereinafter, the present invention will be described in detail with reference to the drawings.

2 is a system configuration diagram according to the present invention. The utility center 3 which records and stores various work results and the alarm status, information and all other information of each subscriber and replaces the alarm situation, and public and private A main distribution plate 22 connected to the switch 5, the subscriber telephone line 16 to the switch 5, a telemeter 25 for generating meter information for realizing a remote meter reading service, and each household Sensor 26 for detecting various alarm conditions in the inside, a terminal 27 for generating a data service request signal and acting as a medium for data service when realizing a data service in addition to a service for remote meter reading or a remote alarm. It is the host computer that manages and interfaces with the utility center 3 to transmit remote meter reading information and emergency status of each subscriber and to command various services. (1) command the operation to the subscriber interface unit 23 that performs system operation and maintenance, receives the result, and then interfaces with the connected host computer 1 to transmit the operation result. In order to detect an occurrence in an emergency alert state, the subscriber 20 scans the subscriber, connects the subscriber interface unit 23 when performing various services, remote meter reading, and remote information, forms a communication path, and performs a service, and the main distribution board ( 22 is connected to the subscriber terminal and the communication line by the subscriber scanning signal of the control unit 20, the Miltiplexer 21, and the order board 22 is connected in parallel with the telephone 24 A communication path is formed with the multiplexer 21 to output alarms and information signals when service requests are made at the sensor 26 and the terminal 27 and are interfaced with the control unit 20. The alarm interface 28 and the display unit 29 are connected to the child interface unit 23 and the subscriber interface unit 23.

3 is a communication flow diagram of the present invention, after connecting the subscriber line and transmitting the tone (I) to the subscriber interface unit 23, when the tone (I) is received, it is determined that an alarm has not occurred and the tone again Since the tone (III) is transmitted by receiving (III), the first process of forming a call line and the work request message after transmitting the work request message after performing the first process, and if the retransmission request is not received, work from the subscriber interface unit 23. A second step of receiving a result message and requesting retransmission to the subscriber interface unit 23 if there is an error in receiving the operation result message from the subscriber interface unit 23 and transmitting a job termination message if no error occurs; When tone (I) is sent to subscriber interface 23 in step 1 and tone (II) is received, it is determined that an alarm is generated and requests an alarm status message. If there is an error in receiving the status message, the subscriber interface unit 23 sends a request for retransmission, and if an error does not occur, a third process is performed.

4 is a detailed flowchart of FIG.

Based on the above configuration, the present invention will be described in detail with reference to FIGS. 2-4.

First, when an alarm condition occurs in each home, an operation of performing a remote alarm service by detecting an alarm condition in the sensor 26 shown in FIG. 2 will be described. The control unit 20 sequentially connects the subscriber telephone line 16 by scanning the multiplexer 21 which connects each subscriber via the line 15. When the subscriber telephone line 16 is connected, when the tone 26 is transmitted to the subscriber interface unit 23 and the sensor 26 recognizes that an alarm condition has occurred, the subscriber interface unit 23 controls the tone (II). 20) to inform that an emergency alarm has occurred. When the control unit 20 receives the tone II, it detects that the alarm is generated and establishes a communication path with the subscriber interface unit 23. Then, the software protocol and processing procedure shown in FIG. By receiving the alarm status message of the subscriber by the control unit 20 to transmit to the host computer (1) to perform a remote information service.

As can be seen in the service process, the control unit 20 periodically scans to detect an alarm occurrence state at the subscriber interface unit 23, so that an alarm can be immediately detected and notified so that it can immediately respond to an emergency situation. . A method of detecting an emergency alarm occurrence state of each subscriber using the telephone line of the exchange will be described below with reference to FIG. First of all, the subscriber sees the normal state without alarm.

Step 31 connects the subscriber's line to perform the work. In step 32, the tone I is transmitted to the subscriber interface 23 in order to form a communication line. In step 33, if the tone I is not received from the subscriber interface 32 within a predetermined time, it is determined that the communication line is not formed, and it is processed as an error and notified to the upper control unit 20. In step 34, when the tone I is received from the subscriber interface unit 23 within a predetermined time, it is determined that an alarm state has not occurred, and the interface unit 23 forms a communication line with the subscriber interface unit 23. Tone (III) is sent out.

In step 35, if the tone III is not received from the subscriber interface unit 23 within a predetermined time period, it is determined that the communication line is not formed, and it is processed as an error and notified to the upper control unit 20. In step 36, when the tone III is received from the subscriber interface 23 within a predetermined time, the work request message is sent to the subscriber interface 23.

In step 37, when the retransmission request is received from the subscriber interface unit 23 with respect to the work request message sent to the subscriber interface unit 23, the work request message is resent immediately. If the process is three times, it processes the protocol error and notifies the upper control unit 20.

Even when the first data of the work result message for the work request message sent to the subscriber interface unit 23 is not received within a predetermined time, it is treated as a protocol error and notified to the upper control unit 20. In step 38, the work result message for the work request message sent to the subscriber interface 23 is received. In step 39, if an error occurs in the received job result message, the subscriber interface unit 23 requests retransmission, and if the process is three times, it processes the protocol layer and notifies the upper control unit 20. In step 40, when the received work result message is normally received, the work termination message is sent to notify the subscriber interface unit 23 that the work is normally completed, and the work result message is notified to the upper control unit 20.

The following is a method for determining what kind of alarm state is because an emergency alarm occurs in the subscriber and detects the state.

Step 41 connects the subscriber's line to check the alarm occurrence state of the subscriber. In step 42, the tone I is transmitted to the subscriber interface 23 in order to form a communication line. In step (43), if the tone (I) or tone (II) is not received from the subscriber interface unit 23 within a predetermined time, it is determined that the communication line is not formed, and it is processed as an error and notified to the upper control unit 20. do. When the tone I is received, it is determined that the subscriber interface unit 23 is in a normal state in which no alarm has occurred, and scanning is repeated from step (41) to check the alarm occurrence state of the next subscriber. At this time, when the tone II is received from the subscriber interface unit 23, the subscriber interface unit 23 recognizes that an alarm has occurred.

In step 44, when the tone II is received from the subscriber interface 23, it is determined that the alarm is generated and the tone III is transmitted to the subscriber interface 23 to form a communication line. In step 45, if the tone III is not received from the subscriber interface 23 within a predetermined time, it is determined that the communication line is not formed, and it is processed as an error and notified to the upper control unit 20.

In step 46, when the tone III is received from the subscriber interface 23 within a predetermined time, the subscriber interface 23 requests a status message of the neck status. In step (47), if the first data of the alarm status message is not received within a predetermined time with respect to the alarm status message request sent to the subscriber interface unit 23, the alarm status message is requested again, and if this process is three times, a protocol error occurs. Processing to notify the upper control unit 20. In step 48, when an error occurs in the alarm status message received from the subscriber interface unit 23, a request for retransmission is performed to the subscriber interface unit 23, and if the process is three times, the process is processed as a protocol error. 20). In step 49, when the received alarm status message is normally received, a job termination message is sent and notified to the subscriber interface 23 that the completion is completed normally, and the alarm status message is notified to the upper controller 20.

The above process is described below with reference to the detailed flow chart shown in FIG. First, in step (1A), the subscriber line is connected, the tone (I) is sent to the subscriber interface unit 23 in step (2A), the timer 1 is driven, and step (3A) is performed. In step (3A), it is checked whether the tone (I) is received from the subscriber interface unit 23, and if it is not received, performs step (4A), and if received, step (8A). In step (4A), it is checked whether tone (II) has been received. If this tone (II) is not received, in step (5A) it is checked whether the timer 1 has timed out. If not, perform step (3A) again, and if time out, perform step (6A). In step (6A), it is determined that the subscriber interface unit 23 is in a disconnected state, and in step (7A), it is reported as a state to the host computer 1 and ends.

In step (8A), the tone (III) is sent to the subscriber interface unit 23 to drive the timer 2, and then step (9A) is performed. In step (9A), it is checked whether the tone (III) is received from the subscriber interface unit 23, and if it is not received, performs step (10A), and if received, step (13A). In step (10A), it is checked whether the timer 2 has timed out, and if it has timed out, step (11A) is performed. If it has not timed out, step (9A) is repeated. In step (11A), it is determined that the track establishment between the control unit 20 and the subscriber interface unit 23 is impossible, and in step 12A, the host computer 1 reports the state and ends. In step (13A), if a request for retransmission is received in step (14A) by transmitting a work request message to the subscriber interface unit (23A), and in step (15A), if the request for retransmission is received, the counter for retransmission request is increased. After checking whether it has been received three times in step (16A), if it receives three times, it performs step (17A), and if not three times, receives step (13A) again. In step (17A), an error in communication with the subscriber interface unit 23 is determined, and after the status report is reported to the host computer 1 in step (18A), the process ends. If the retransmission request is not received in step 19A, the operation result is received from the subscriber interface unit 23 and step 20A is performed. In step 20A, if an error has occurred during reception, if the error does not occur, the operation termination message is sent to the subscriber interface unit 23 in step 21A. If an error occurs during reception in step 20A, the error generation counter during reception is incremented in step 22A to perform step 23A. In step 23A, if the error occurs three times during reception, the subscriber interface unit 23 requests retransmission if it is not three times, and performs step 19A again, and if it is three times, step 24A. In the step (24A), it is determined that the communication error with the subscriber interface unit 23 (25A), the status report to the host computer (1) and ends.

When tone (II) is received in step (4A), a request for transmitting an alarm status message to the subscriber interface unit 23 is performed in step (26A), and then step (27A) is performed. In step 27A, an alarm status message is received from the subscriber interface unit 23, and in step 28A, an error occurs during reception. If the error does not occur in step 29A, the job termination message is sent to the subscriber interface 23, and the process ends. If the error occurs in step 30A, the error occurrence counter during reception is incremented to check whether the error occurs three times in step 32A.

If the error does not occur three times, a request for retransmission to the subscriber interface unit 23 is performed in step 31A and step 27A is again performed. If the error occurs three times, it is determined as an error in communication with the subscriber interface unit 23 in step 33A, and after the status report to the host computer 1 in step 34A, it ends.

As described above, there is an advantage that the remote alarm service can be used regardless of the surrounding environment by using the telephone line of the switch in the comprehensive remote information service system, and the subscriber interface unit connected in parallel with each subscriber's telephone line is always scanned to detect an alarm immediately. There is an advantage that can be prevented by an emergency. In addition, since there is no need for additional wiring work by using a general telephone line, there is an advantage in that the cost of the system configuration is reduced.

Claims (3)

In the subscriber service method in the remote meter reading system, after the subscriber line is connected, the subscriber interface unit 23 sends the tone (I), and when the tone (I) is received, it is determined that an alarm has not occurred and the tone is again. (III) is transmitted and the tone (III) is received, so that the first process of forming a communication line and the work request message after transmitting the work request message after performing the first process and the retransmission request is not received, the subscriber interface unit 23 starts the work result. A second step of receiving a message and requesting a retransmission to the subscriber interface unit 23 if there is an error in receiving the operation result message from the subscriber interface unit 23, and transmitting a job termination message if no error occurs; In the process, when the tone (II) is sent to the subscriber interface unit 23 and the tone (II) is received, it is determined that an alarm has occurred and the alarm status message is requested. Comprehensive remote information comprising the third step of sending a request for retransmission to the subscriber interface unit 23 if there is an error when receiving an alarm status message from the face unit 23, and if the error does not occur. Subscriber remote information service method in service system. 2. The method of claim 1, wherein if a request for retransmission is received from the subscriber interface unit (23), if the message is retransmitted three times, it is treated as a protocol error. The subscriber remote information service method of claim 2, wherein the alarm occurrence state of the subscriber is periodically detected by using a tone.

Images