KR930006418B1 - Wireless remote checking system & control method - Google Patents

Abstract

The telemetering data of a subscriber and the telemetering request of a telemetering center are transmitted in the form of radio signal. The system comprises an exchange (100), a paging system (200) for processing data transmitted through exclusive telephone lines and for transmitting processed data through an antenna (ANT1), a subscriber unit (300) including telemetering meter units (M1-Mn), a receiver (26) for receiving telemetering request signal transmitted from a telemetering center, a home service unit (28) for transmitting telemetering data according to telemetering request signal, and a first transmitter unit (30) for transmitting telemetering data to the paging system (200), and a telemetering center (400) for collecting and processing telemetering data of each subscriber.

Description

Wireless remote meter reading system and control method

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

2 is a block diagram of a wireless remote meter reading system according to the present invention.

3 is a flow chart of the control function according to the present invention.

* Explanation of symbols for main parts of the drawings

20: paging system body 22: transmitter

24: MIU 26,32: receiver

28: HSU 30,38: first and second transmitter

34: host computer 36: output device

100: exchanger 200: paging system

300: subscriber 400: meter reading center

AN1-AN3: Antenna M1-Mn: Remote Meter

T1-Tn: Alarm Sensor

The present invention relates to a radio telemetering system and a method of controlling the same, and in particular, by using a wireless calling system, the information of a subscriber to be remotely read is transmitted as a wireless signal to a necessary reading center. The present invention relates to a wireless remote meter reading system for performing meter reading and a control method thereof.

BACKGROUND OF THE INVENTION [0002] The present invention relates to a remote meter reading system and a control method thereof, which are one of the remote measurement systems for measuring using data communication means.

Currently, there is a remote metering system as one of the remote measurement system for measuring by using data communication means. In general, the remote meter reading system automatically reads a meter, such as water, gas, electricity, etc. of a subscriber, such as a home or a factory, using a general subscription telephone line at a remote meter reading center. In addition to the meter reading, the remote meter reading system transmits information such as emergency alarm occurrence of each subscriber to the meter reading center to manage. In this case, the emergency alert means an alarm for the occurrence of a fire, a breakdown, and the like, and the meter reading center may be, for example, a power company, a gas company, a fire station, a police station, and an apartment management office.

As described above, the remote meter reading system includes a meter reading center 10, a subscriber 11, and a communication center 12.

In the configuration of FIG. 1, the meter reading center 10 controls the overall operation of the system, gives a command, and manages information on the command result, and a host computer 1 and the information of the host computer 1. And an output device 2 for outputting and a modem 3 for demodulating and demodulating the input / output data of the host computer 1 via a dedicated line.

The subscriber 11 integrates a plurality of remote meter reading meters M1-Mn for various meter readings and electrical values of the remote meter reading meters M1-Mn, and transmits the summed values by a predetermined request. An interface unit (hereinafter referred to as "MIU") 4, a plurality of alarm sensors T1-Tn for detecting various alarm occurrences, the MIU 4 and an alarm sensor T1- Tn) and a home service unit (hereinafter referred to as "HSU") 5 which performs a command received through the general subscription telephone line and transmits the performance result through the general subscription telephone line.

The communication center 12 is in contact with the HSU 5 of the plurality of subscribers 11 through a general subscription telephone line and collects the information of the HSU 5 by a plurality of line concentration adapters. LCA ") and the HSU 5, which is connected to the LCA 5-7 and is connected to the LCA 5-7 through a general subscription telephone line, is connected to the host computer 1; A line concentration system (hereinafter referred to as " LCS ") 8 for transmitting a result of performing the HSU 5 to the host computer 1, and the meter reading center 10; A modem 9 is connected between the modem 3 and the LCS 8 by a dedicated line to modulate and demodulate the input / output signals of the LCS 8.

The configuration of FIG. 1 is a two-way wired metering system which requires various types of information of the subscriber 11 to be remotely read at the HSU 5 and a plurality of subscribers to the LCS 8 through the general subscription telephone line. It is delivered to the meter reading center 10, the host computer 1 of the meter reading center 10 controls and manages this.

The conventional remote meter reading system as described above transmits information by wire through a general subscription telephone line, so if the number of subscribers increases, the installation cost is increased due to the increase of LCA and a lot of modems are required. There was a lot of problems.

Therefore, an object of the present invention, in the remote meter reading system, by using a wireless call system by transmitting the information of the subscriber to the wireless meter to the meter reading center as a necessary radio signal or by transmitting the information request of the meter to the subscriber, the simple and low cost The present invention provides a wireless remote meter reading system and a control method thereof that can perform remote meter reading and information service for more subscribers.

It is still another object of the present invention to provide a wireless remote meter reading system and a control method thereof capable of delivering subscriber information to a meter reading center at regular or alarm occurrences and upon request of a meter reading center.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 2 is a system configuration diagram according to the present invention, which is connected to a switch 100 that performs a general telephone call service and a dedicated line 103 having a predetermined number of lines to the switch 100 and calls the switch 100 by a call. A paging system main body 20 for processing and outputting transmission information through the < RTI ID = 0.0 >) < / RTI > and a transmitter 22 for modulating the transmission signal of the paging system main body 20 and transmitting it through the antenna ANT1. The system 200, a plurality of remote meter reading meter (M1-Mn) for various meter reading, and the electric value of the remote meter reading meter (M1-Mn) are integrated and the integrated value is transmitted to a predetermined request. A receiver 26 for receiving and demodulating request information transmitted from the paging system 200 through a MIU 24 and an antenna ANT2, a plurality of alarm sensors T1-Tn for detecting generation of various information, The number is controlled by controlling the MIU 24 and the alarm sensor (T1-Tn) An HSU 28 that analyzes the alert received as a novelty 26 and requests information from the MIU 24 and sends out subscriber information delivered from the MIU 24, the exchange 100 and a general subscription phone. Connected via line 101 and calling the paging system 200 under control of the HSU 28 and sending the subscriber information to the paging system 200 via the general subscription phone line 101. The subscriber 300 composed of one transmitter 30, the receiver 32 receiving and demodulating subscriber information transmitted from the paging system 200 through the antenna ANT3, and overall control and information of the system A host computer 34 for instructing analysis and requesting subscriber information upon occurrence and analyzing and outputting subscriber information received as the receiver 32, an output device 36 for outputting output information of the host computer 34; The host computer 36 Calling the paging system 200 by the control of the) to the meter reading center 400 consisting of a second transmitter 38 for sending the request information to the paging system 200 through the general subscription telephone line 102 It is composed.

The paging system 200 in the configuration of FIG. 2 is a general radio calling system.

3 is a flow chart of a wireless remote meter reading system control function according to the present invention, and FIG. 3a is a flowchart of the execution of the HSU 28 of the subscriber 300 and calls the paging system 200 through the general subscriber telephone line 101. A message about information is periodically transmitted to the meter reading center 400 as a wireless signal through the paging system 200.

3b is a flow chart of the host computer 34 of the meter reading center 400. The message of subscriber information is received through the paging system 200, the received information is analyzed, and the analysis result is output through the output device 36. The process of output is made.

3A and 3B are flowcharts illustrating a case in which subscriber information is periodically transmitted from the subscriber 300 to the meter reading center 400 or an alarm occurs.

3C is a flowchart of the execution of the host computer 34 of the meter reading center 400. When necessary information is generated, the paging system 200 is called through the general subscription telephone line 102, and a message about the required information is sent to the paging system 200. After transmitting to the subscriber 300 as a wireless signal by the), through the paging system 200 receives a message for the subscriber information, analyzes the received information and outputs the analysis result through the output device 36 Is done.

3d is a flowchart of the execution of the HSU 30 of the subscriber 300 and after receiving the request information through the paging system 200 and analyzing the received information, the paging system 200 through the general subscription telephone line 101. Call and transmit a message for subscriber information to the meter reading center 300 as a wireless signal through the paging system 200.

3c and d are flow charts when the subscriber information is transmitted from the subscriber 300 to the meter reading center 400 by instructing the subscriber 300 when information is generated in the meter reading center 400.

Hereinafter, operation examples of FIGS. 2 to 3 according to the present invention will be described in detail.

Now, in the state in which the system of FIG. 2 operates normally, first, the operation in the case of regularly transmitting subscriber information from the subscriber 300 to the meter reading center 400 will be described.

In this case, the subscriber information is regularly transmitted by receiving information on the usage of gas, electricity, and water of the remote meter reading meter (M1-Mn) through the MIU 24 and periodically transmitting the meter information to the meter reading center 400. Say.

When the periodic information is generated as described above, the HSU 28 controls the first transmitter 30 in step (A1) of FIG. 3A to call the paging system 200 through the general subscription telephone line 101, and then (A2 In step), it checks whether it is busy. Here, the first transmitter 30 is controlled by the HSU 28 and consists of a call circuit that calls the paging system and transmits the information of the HSU 28 to the paging system 200 through the exchange 100. .

In step (A5), the standby and monitoring are continued, and after a predetermined time has elapsed, the above-described step is repeated by looping to step (A1). If the exchange result is not in the call in step (A2) and is exchanged through the exchange 100, step (A3) is performed.

If the test result is a call in step (A2), step (A5) is performed.

In step (A3), a subscriber address, that is, a subscriber's own unique address among a plurality of subscribers is transmitted, and in step (A4), a message about subscriber information transmitted from the MIU 24 is transmitted.

Accordingly, the paging system main body 20 of the paging system 200, which is connected to the switch 100 by the dedicated line 103, inputs the message for the subscriber address and the subscriber information as transmission information and transmits the transmission signal to the transmitter 22. By outputting the signal, the subscriber address and the subscriber information message are transmitted through the antenna ANT1 as a radio signal according to a paging transmission method.

As described above, when the message for the subscriber address and the subscriber information is transmitted from the paging system 200, the receiver 32 of the meter reading center 400 receives the message through the antenna ANT3. That is, the host computer 34 receives the message of the subscriber address and the subscriber information through the receiver 32 in step (B1) of FIG. 3B, and analyzes the received information in step (B2). .

Next, in step (B3), the analysis result is output through the output device 36 so that the monitoring personnel of the meter reading center 400 can know. In this case, the output device 36 may be a peripheral device attached to the host computer 34 such as a monitor, a printer, a disk driver, and the like.

Thus, the host computer 34 knows the status of a particular subscriber by the subscriber address and subscriber information that is periodically received and allows the monitoring personnel to know through the output device 36.

On the other hand, when an alarm is detected in the alarm sensor (T1-Tn) of the subscriber 300, that is, when an alarm such as theft or fire is generated, the HSU 28 reads the information as the subscriber information as in the above-mentioned periodic information transmission. To the center 400. In addition, the host computer 34 of the meter reading center 400 also receives and processes the alarm as subscriber information in the same process as the above-mentioned periodic information transmission.

Secondly, when the subscriber information is requested to the subscriber 300 by the need to confirm the subscriber information in the meter reading center 400, the operation of the subscriber information from the subscriber 300 to the meter reading center 400 according to the request information will be described. Is as follows.

When the request information for the subscriber information is generated, the host computer 34 analyzes the necessary information in step (C1) of FIG. Then, according to the analysis result, the second transmission unit 38 is controlled in step (C2) to call the paging system 200 through the general subscription telephone line 102, and then in step (C3) it is checked whether the call is in progress. . In step (C3), if the test result is in a call, standby and monitoring continue in step (C10), and after a predetermined time, loops to step (C2) and repeats the above-described step. Then, in step (C3), the inspection result is not in a call and is in a standby state through the switch 100, and continues to monitor, and when it is not in a call and is connected to the exchange, step (C4) is performed.

In step (C4), the subscriber address, that is, a unique address for the subscriber requesting subscriber information among a plurality of subscribers, is transmitted, and in step (C5), a message for requesting information for requesting the necessary subscriber information is sent.

Accordingly, the paging system main body 20 of the paging system 200, which is connected to the switch 100 by the dedicated line 103, inputs a message for the subscriber address and the request information as transmission information, and transmits the transmission signal to the transmitter 22. By outputting the signal through the antenna ANT1 transmits the message for the subscriber address and the request information as a radio signal according to the paging transmission method.

As described above, when the message for the subscriber address and the request information is transmitted from the paging system 200, the receiver 26 of the subscriber 300 corresponding to the subscriber address receives it through the antenna ANT3.

That is, the HSU 28 receives the message of the subscriber address and the request information through the receiver 26 in step (D1) of FIG. 3D, and analyzes the received information in step (D2).

According to the result of the analysis, in order to deliver the subscriber information required by the host computer 34 to the host computer 34, the first transmitter 30 is controlled in step (D3) through the general subscription telephone line 101. After calling the paging system 200, it is checked whether a call is made in step (D4). If the test result is a call in step (D4), go to step (D7) to continue waiting and monitoring, and after a predetermined time, loops to step (D3) and repeats the above-described steps. If the exchange connection is made through the switch 100 instead of the call in step (D4), the subscriber address, that is, the unique address corresponding to the user among the plurality of subscribers is transmitted in step (D6), and the MIU in step (D6). A message about the subscriber information requested by the host computer 34 from among the subscriber information received at 24 is transmitted.

Accordingly, the paging system main body 20 of the paging system 200 inputs the message of the subscriber address and the subscriber information as transmission information and outputs the message to the transmitter 22 to the subscriber address and the subscriber information through the antenna ANT1. Message is transmitted as a radio signal according to a paging transmission method.

On the other hand, the host computer 34 sends a message in step (C5) and then proceeds to step (C6) to check whether the information on the request information is received from the subscriber 300.

If there is no information received as a result of the inspection in step (C6), the standby and monitoring continues in step (C10), and after a predetermined time, loops to step (C6) and repeats the above-described steps. If there is information received as a result of the inspection in step (C6), that is, a message about the subscriber address and the subscriber information sent by the HSU 28 in steps (D5) and (D6) is received from the paging system 200. (C7) is performed.

Receiving the information in step (C7), analyzing the information received in step (C8) and proceeds to step (C9) to output the analysis results as in step (B3) of FIG. It outputs through the device 36 so that the monitoring personnel of the meter reading center 400 can know.

As described above, in the remote meter reading system, a subscriber or subscriber information such as meter reading information, alarm generation information, etc. of a subscriber to be read wirelessly is periodically or at the time of an alarm reading and a meter reading center using a conventional wireless calling system. As a wireless remote meter reading system and control method to deliver to the meter reading center as necessary, there is an advantage that can perform a remote meter reading and alarm service for a large number of subscribers with a simple and low-cost system configuration.

Claims (2)

In a wireless remote meter reading system using a wireless calling system, a switch 100 for performing a general telephone call service and a dedicated line 103 having a predetermined number of lines are connected to the switch 100 so that the switch 100 is connected by call. Paging system 200 is composed of a paging system main body 20 for processing and outputting the transmission information through the transmission; and a transmitter 22 for modulating the transmission signal of the paging system main body 20 to transmit through the antenna ANT1 ), A meter interface unit for integrating electrical values of a plurality of remote meter reading meters (M1-Mn) for various meter readings, and the remote meter reading meters (M1-Mn), and delivering the integrated values by a predetermined request. 24, a receiver 26 for receiving and demodulating request information transmitted from the paging system 200 through an antenna ANT2, and a plurality of alarm sensors T1-Tn for detecting generation of various information; , The meter is It controls the face unit 24 and the alarm sensors T1-Tn, analyzes the information received as the receiver 26, requests information from the meter interface unit 24, and transmits it from the meter interface unit 24. A home service unit 28 for transmitting subscriber information, which is connected through the switchboard 100 and the general subscription telephone line 101, and calls the paging system 200 under the control of the home service unit 28; And a subscriber (300) comprising a first transmitter (30) for transmitting the subscriber information to the paging system (200) through the general subscription telephone line (101), and the paging system (200) through an antenna (ANT3). A receiver 32 receiving and demodulating subscriber information transmitted from the receiver), and controlling the system as a whole, instructing analysis and requesting subscriber information when information is generated, and receiving the subscriber information received as the receiver 32. A host computer 34 for analyzing and outputting the output, an output device 36 for outputting output information of the host computer 34, and calling the paging system 200 under control of the host computer 36, And a meter reading center (400) comprising a second transmitter (38) for sending request information to the paging system (200) through a general subscription telephone line (102). Switching system 100 which performs general telephone call service, Paging system main body 20, Transmitter 22, Paging system 200, Remote meter reading meter (M1-Mn), Meter interface unit ( 4) a subscriber 300, a receiver 32, a host computer 34, and an output device, each comprising an alarm sensor T1-Tn, a home service unit 5, a first transmitter 30; A method of controlling a wireless remote meter reading system having a meter reading center 400, comprising a meter 36 and a second transmitter 38, wherein the subscriber's home service unit controls the first transmitter when periodic information occurs and when an alarm occurs. A first call step of calling the paging system through an exchange and checking whether the call is in progress, and checking and resuming the call and checking whether the call is in progress at a predetermined time; Is not in a call and is recalled via the exchange Periodic information and alarm sending step that sends message about subscriber address and subscriber information when it is exchanged with aging system, and host computer of meter reading center receives subscriber information from paging system, analyzes received information and analyzes analysis result. The host computer of the meter reading center analyzes and instructs necessary information when the periodic information and alarm transmission process including the subscriber information receiving step outputted through the output device and the request information requiring the subscriber information of the subscriber occurs, and the second transmitter Calling the paging system through the switch and checking whether the call is in progress, and checking and resuming the call and checking whether or not there is a call during the call as a result of the test; Not in a call in the second call phase and through the exchange When the exchange connection with the paging system is performed, the request information sending step of sending a message for the subscriber address and the request information and the request information sending step after the request information sending step are performed, and if there is no reception, A reception checking step of continuing to monitor and checking reception at predetermined time intervals, the home service unit of the subscriber receives request information from a paging system, analyzes the received information, and controls the first transmitter to control the switch; A third call step of calling the paging system and checking whether the call is in progress, continuing the standby and monitoring when the test result is in a call, and checking whether the call is repeated or not every predetermined time, and the call in the third call step. Sign up if you are not busy and have a switched connection with the paging system through the exchange A subscriber information sending step of sending a message for subscriber information according to an analysis result of the address and the request information, and receiving the subscriber information of the request information at the reception inspection step by the host computer of the meter reading center. And a request subscriber information transfer process comprising a second information receiving step of analyzing and outputting the analysis result through the output device.