KR910005332B1 - Integrated remote data service system - Google Patents

Abstract

A system of multiplexing telephone lines to the total telemetreing service system through main distributionframe (MDF) offers good sevice capability with any type of exchange unit. The system also provides terminal alarming and data servicing by avariety ofsensors and terminals. The configuration is composed of exchange unit (205), main distribution frame (204), utility center (electricity, water system, & gas line system) (200), alarming sensors (209), terminal block (210) for data service, host computer (201), control block (202), multiplexer (203), subscriber interface notifying event and information siganls (206), and so on.

Description

Total Remote Information Service System

1 is a diagram of a conventional telemetering device using a test trunk of an exchange.

2 is a conceptual diagram of a comprehensive remote service system according to the present invention.

3 is a connection diagram of the main wiring board and the multiplexer in the second diagram.

4 is a circuit diagram of a carbon substrate of FIG.

5 is a block diagram of a comprehensive remote service system according to the present invention.

6 is a configuration diagram of the main control part of the fifth diagram.

7 is a configuration diagram of a multiplexer control unit of the fifth diagram.

8 is a configuration diagram of the multiplexer of the fifth diagram.

9 is a detailed configuration diagram of each multiplexer of FIG. 8.

10 is a configuration diagram of a subscriber interface unit in FIG. 5;

11 is an operational waveform diagram for a data service.

12 is a service flow diagram of comprehensive remote information according to the present invention.

FIG. 13 is a flowchart illustrating an alarm service in FIG. 12. FIG.

14 is a flowchart of a data service of FIG. 12;

FIG. 15 is a flow diagram of a telemetering service during FIG. 12. FIG.

* Explanation of symbols for main parts of the drawings

200: Utility Center 201: host computer

202: control unit 203: multiplexer

204: main switchboard 205: switchboard

206: subscriber interface 207: telephone

208: Meter 209: Sensor

210: terminal 211: buzzer

212: display and switching unit 221: main control unit

222: multiplexer control unit

The present invention relates to a comprehensive remote service system using an exchange, and more particularly, to an apparatus and method capable of remotely performing a telemetering alarm and data service regardless of an exchange type.

The conventional remote meter reading system uses a test trunk of a local exchange and its configuration is as shown in FIG.

First, the conventional remote metering method will be described. A host computer 10 which is in charge of the entire remote metering system, and a utility center such as an electric company or a waterworks bureau that wants a telemetering service ( 102, a switch 103 that performs the exchange function of a regular telephone, a test trunk 104 for testing subscriber lines using the switch 103, and the test-trunk 104 And an exchange unit (EIU 105) for performing an interfacing function with a subscriber interface unit (SIU), which will be described later, and interfacing operations with meter reading meters connected to a telephone line. And a subscriber interface section 106 that leads to meter values, and is connected to the subscriber interface section 106 and has a function of converting mechanical values into electrical values. It consists of a meter reading meter 108 and a telephone set 107.

In the above configuration, when the utility center 102 desires remote meter reading, the host computer 101 sends a remote meter reading request signal to the host computer 101 through the line 111, and the host computer 101 analyzes the request signal and switches through the lines 112 and 113. A meter reading command is sent to the interface unit 105.

At this time, the meter reading command includes a phone number and meter numbers desired for meter reading.

When the exchange interface unit 105 receives the metering command, the exchange interface 105 analyzes and accesses the test link 104 through the line 114. The line access method varies depending on the type of the exchange 103, and the test trunk 104 Exchanges that do not have) cannot perform the remote metering service function.

The test trunk 104 forms a metallic-path between the telephone line 115 and the switch interface unit 105 by the command of the switch interface unit 105. In this case, since the telephone line 115 forms a passage with the switch interface unit 105 with the -48V power switched, the switch interface unit 105 supplies new station power to the subscriber interface unit 106. do. At this time, the power source is to distinguish the normal telephone line power of -48v to supply power of -55V or more so as not to operate when forming a call through the telephone set 107.

When the exchange interface unit 105 supplies a power supply of -55V or more to the subscriber interface unit 106 via the telephone line 115, the subscriber interface unit 106 is operated to enter the remote meter reading mode through the meter 108.

When the subscriber interface 106 enters the remote metering mode, the exchange interface 105 issues a meter reading command to the subscriber interface 106.

The subscriber interface unit 106 then reads the meter reading command and reads the meter reading through the meter meter 108 for meter reading through the meter interface unit 116. The subscriber interface section 106 then analyzes the meter value and sends it to the exchange interface section 105, where the switch interface section 105 sends this value back to the host computer 101 to terminate the remote meter reading operation.

As can be seen in the above process, the conventional remote metering method is not available for the remote meter reading service in the PCM switch which does not have a test trunk or the PCM switch which does not have a metallic trunk. Due to the difference, each exchange interface system (EIU System) had to be configured according to the exchange type.

In addition, due to the operation of the subscriber interface (SIU) by the power supply of the station, it was impossible to detect the sensor or data service by the terminal other than the remote meter reading.When the exchange interface (EIU) accesses the subscriber's telephone line, a dial pulse, etc. The access time is long because the line is accessed by the relay signal between stations, and when the service of tens of thousands of subscribers is performed through one test trunk due to the limitation of the number of test links, the time required for the remote metering service was much longer. there was.

Accordingly, an object of the present invention is to provide a comprehensive remote service system capable of quickly performing a service function irrespective of an exchange type by multiple access of a telephone line to a system using a main switchboard of an exchange.

Another object of the present invention is to provide a comprehensive remote service system that can perform alarm generation and data service functions by sensors and terminals in addition to the remote meter reading function.

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

2 is a conceptual diagram of the present invention in which multiple telephone lines are connected to a comprehensive remote service system by using a main distribution frame (MDF) of an exchange. The switch 205 and a subscriber line are concentrated to the exchange 205. The main switchboard 204 to be connected, the utility center 200, the telemeter 208 for generating the meter information, the sensor 209 for detecting an alarm state, and the terminal 210 for generating a data service request signal. And the host computer 201 that manages the entire system according to the service type, generates a telemetering command in the telemetering service, and generates a subscriber scanning signal connected to the system operation maintenance and system, and generates a communication path when an event occurs. And a control unit 202 for controlling service information generation and flow, and connected to the main switchboard 204 to establish a communication path with a corresponding subscriber by a subscriber scanning signal of the main control unit 202. The multiplexer 203 and the main switchboard 204 are connected in parallel with the telephone 207 to form a communication path with the multiplexer 203 so that an event occurs in the sensor 209 and the terminal 210. And a subscriber interface section 206 for outputting generation and information signals. 3 is a connection diagram of the main switchboard 204 and the multiplexer 203 of FIG. 2 and FIG. 4 is a circuit diagram of the carbon substrate 301.

First, the main distribution frame (MDF) 204 means a switchboard for connecting the line side and the equipment side in the switchboard such as a line link switch or trunk when the subscriber line or the relay line is drawn into the local exchange (telephone station). As the number of terminals on the line side is larger than the number of terminals on the exchange side, the collection role is also performed. In the present invention, the multiplexer 203 is inserted into the main switchboard 204, and the carbon substrate 301 is inserted into the multiplexer 203 again. That is, the subscriber line (Subscriber Line Card) side through the carbon substrate 301 is a tip (311) line and the ring (Ring) 312 line, which is connected in parallel to the tip 311 and the ring 312 Connected multiplexer 203 to lines 313 and 314, and tip line 315 and ring line 316 emerge from phone board 301 toward phone 207, and the subscriber interface in parallel with phone line 207 on tip and ring lines 315 and 316. The unit 206 is connected.

The carbon substrate 301 has various forms, and the structure shown in FIG. 4 is an example of a typical structure.

4 shows a three-pole arrester 401 and heating coils 402 and 403, and grounds for surge in the tip and ring lines 315 and 316 toward the telephone subscriber 207. (Arrester safty ground) (317) to form a current path to the ground, if the surge signal can not fully absorb the heating coil (402,403) is cut (off) serves to protect the exchanger.

Therefore, since the integrated remote service system is connected in parallel to the tips and ring lines 311 and 312 connected to the subscriber circuit side of the exchange 205, the system can be protected even if an unexpected surge signal is generated from the subscriber side.

Referring to the comprehensive remote service process, in the case of telemetering, the control unit 202 is operated by the command of the host computer 201, and thus the control unit 202 scans the multiplexer 203 to make a telephone line 233. After accessing to the subscriber interface unit 206 gives a telemetering command. Lines 233 mean 315 and 316 which are the tips and rings of FIGS. 3 and 4. At this time, the subscriber interface unit 206 uses AC 110V / 220V, which is a commercial power source, without using a national power source.

At this time, the subscriber interface unit 206 having received the telebettering command as described above reads the telemeter 208 value and sends it to the telephone line 233, which is the multiplexer 203 and the control unit 202. Is applied to the host computer 201.

The host computer 201 then transmits the value of the meter 208 to the desired utility center 200 (which in this case could be an electric company, a water service bureau, a gas company, etc.).

The telemetering command as described above is executed by the host computer 201 by the request of the utility center 200.

In the case of a remote alert or data service, the subscriber interface unit 206 generates an out-of band tone (pilot frequency) out of the voice band to the telephone line 233 in the normal state. The main controller 202 sequentially scans the multiplexer 203 through the line 232 and checks whether the pilot frequency detected at each subscriber interface unit 206 is detected.

At this time, when the sensor 209 detects the occurrence of an alarm state or requests the data service from the terminal 210, the subscriber interface 206 recognizes this and disconnects the pilot frequency on the telephone line 233. Then, the main controller 202 scans the sequential multiplexer 203 and recognizes that an event is generated according to the pilot frequency removal state of the corresponding subscriber, and inquires a message to the corresponding subscriber interface 206 through the multiplexer 203 (Interrogation). Message). Upon receiving the inquiry message, the subscriber interface unit 206 transmits a message on the reason for removing the pilot frequency (alarm or data service request), and the main control unit 202 analyzes the message to determine whether it is an alarm event or data service. After determining the service, perform the service.

The use of the pilot frequency out of the voice band at the subscriber interface unit 206 is not intended to affect the call function performed between the telephone 27 and the switch 205.

5 is a configuration diagram of a comprehensive remote information service system according to the present invention, a utility center 200, a host computer 201 that manages a system mode according to each service function, and redundant first and second main controllers ( The main control unit communicates with the host computer 201 through a communication path 511 in the configuration of MC1-MC2, and selects the multiplexer controller 222 which will be described later when performing system operation maintenance and service. (main controller) 211, n configuration of the main controller 221, parallel bus (parallel bus) 512 and serial bus (serial bus) 513 is connected to generate a scanning signal of each subscriber, the event generation The multiplexer controller 222 for controlling the communication line formation of the subscriber and analyzing the telephone line state and 10 of the multiplexer controller 222 are connected to each of the multiplexer controllers. A multiplexer 203 positioned between the main switchboard 204 and the carbon substrate 301 of the machine 205 and selected by a scanning signal of the multiplexer controller 222 to form a communication path with a subscriber; 10 are connected to each multiplexer 203, and interface with the alarm sensor 209, the data service terminal 210, the meter 208, and the like, and the event generation signal and event information by the multiplexer 203. It consists of a subscriber interface unit 206 for outputting. Here, the main controller 221 and the multiplexer controller 222 correspond to the controller 2020 of FIG. 2.

6 is a configuration diagram of the main control unit 221 of FIG. 5, a microprocessor 601 controlling the operation of the main control unit 221, a memory 6020 storing programs and data, and the host computer 201. ) Is connected to the communication path 511 to interface information between the host computer 201 and the microprocessor 601 and other information on system operation and maintenance or emergency service information under the control of the microprocessor 601. A serial bus interface 604 for serially interfacing with the multiplexer controller 222, a first timing generator 605 for generating an operation timing signal of the system, and a multiplexer controller under the control of the microprocessor 606. A parallel bus interface 606 for interfacing 222 and service information, an IPC timing generator 607 for generating timing signals for redundancy, Group consists of IPC circuits 608 for interfacing the microprocessor with the communication (Interprocessor Communication) between the processor, the main control portion standby state according to the output timing of the IPC (607).

FIG. 7 is a configuration diagram of one multiplexer control unit 222 of FIG. 5. The main control unit 221 controls the operation of the multiplexer control unit and the main control unit 221 through the serial bus 513 under the control of the control unit 701. A serial bus interface 702 for serial interfacing with the controller, a parallel bus interface 703 for parallel interfacing with the main controller 221 through a parallel bus 512 under the control of the controller 701, and the first through line 612. The second timing generator 704 generates an enable and clock signal for subscriber scanning based on the timing signal of the first timing controller 605 and the serial and parallel interface units 702 and 703 under the control of the controller 701. A data generator 709 for generating data for selecting a corresponding subscriber according to the information, and a UART for serially converting parallel data through the serial and parallel interface units 702 and 703. Asynchrous Receiver / Transmitter) 705 and a modem 706 which performs communication between the analog buses 514 and 515 and the UART 705 under the control of the controller 701.

Analog buses 514 and 515 refer to line 521 of FIG. 5.

FIG. 8 is a configuration diagram of a multiplexer that can be controlled by one multiplexer control unit 222 of FIG. 5. One multiplexer control unit 222 controls 10 multiplexers 203, and one multiplexer 203 is 10. The multiplexer 203 is connected to the plurality of subscribers, and the multiplexer 203 determines whether the multiplexer 203 is selected through the address selector 801. Therefore, among the 8-bit data generated by the data generator 709 of the multiplexer controller 222, the upper 4 bits of data are data for selecting the multiplexer 203, and the lower 4 bits of data are used by the multiplexer 203. Data for selecting the connected subscriber interface unit 206.

FIG. 9 is a block diagram of one multiplexer 203 of FIG. 8, and a serial-to-parallel converter 901 for converting serial signals (data, enable, clock) for subscriber scanning generated by the multiplexer controller 222 in parallel. And a multiplexer identification generator (902) for generating a decoder enable signal when the higher order 4-bit data of the parallel-to-serial converter 901 and the selection signal of the address selector 801 are identical to each other. The decoder 903 is enabled by a predetermined signal of the multiplexer ID generator 902 to decode the lower 4 bit data of the parallel-to-serial converter 901 to drive the driver 904 to generate a communication channel formation control signal. And a switch composed of ten switches to be turned on when the communication path forming control signal is generated to form a communication path between the multiplexer control unit 222 and the subscriber interface unit 206. It consists of 905.

FIG. 10 is a structural diagram of a subscriber interface unit 206. The microprocessor 1001 controls the operation of the subscriber interface unit 206, a memory 1002 for storing programs and data, and under the control of the microprocessor 1001. A meter interface unit 1003 for interfacing with 208, a sensor interface unit 1004 for interfacing the sensor 209 under control of the microprocessor 1001, and an RS-232C driver under control of the microprocessor 1001 UART (1006) for interfacing with terminal (210) through (1005), an alarm driver (1007) for generating each alarm display and an audible alarm under the control of the microprocessor (1001), of the microprocessor (1001) A pilot frequency generator 1009 for generating a pilot frequency under control, and a modem, an alarm, and an alarm through a modem 1008 under the control of the microprocessor 1001. And a telephone line interface 1010 for interfacing data with the telephone line and transmitting the output of the pilot frequency generator 1009 to the normal telephone line.

11 is an operation waveform diagram of a comprehensive remote information service system according to the present invention, in which 11a is a clock (CLK) waveform diagram generated by the timing generator 704 of the multiplexer controller 203, and 11b is a multiplexer controller 203. FIG. Is a data waveform diagram generated by the data generator 709, 11c is an enable waveform diagram generated by the timing generator 704 of the multiplexer controller 203, and 11d is a pie chart generated by the multiplexer controller 203. Lot frequency, hook and ring detection waveform diagram, 11e is a waveform diagram for transmitting service information from the multiplexer controller 203 to the subscriber interface unit 206, and 11f) is a multiplexer controller 203 from the subscriber interface unit 206. FIG. Is a waveform diagram for transmitting service information.

At this time, (T1) section is a pilot frequency, hook and ring detection section, and (T2) section is modem set-up section and (T3) section is pilot number, hook and ring detection data transmission. T4 is a section for transmitting data from the multiplexer controller 203 to the subscriber interface 206 and T5 is a section for transmitting data from the subscriber interface unit 206 to the multiplexer controller 203.

12 is a flowchart of a comprehensive remote information service according to the present invention, in which a first step of sequentially analyzing a subscriber to analyze a type of an event that occurs when an event occurs, and transmitting the corresponding alarm to a host computer when an event occurs in the first step. And a second process of returning to the first process, performing service on the data requested by the event data service request date and time in the first process, and checking whether the execution time is within the data service execution time of one subscriber, If the process is not in the standby state, the third process returns to the first process, and when the service time of one subscriber is exceeded in the third process, the subscriber is sequentially scanned to check whether an event has occurred, and if no event has occurred. The fourth process returning to the third process at the time; In the fifth process of performing the service according to the vent and returning to the third process, and when the host computer requests the telemetering service at a certain period, the telemetering service for the corresponding request is performed and within the prescribed telemetering service execution time. When finished, the sixth process of returning to the first process, and if the execution time is exceeded in the sixth process, the subscriber is sequentially scanned to check for an event occurrence, and if there is no event, the seventh process returns to the sixth process. And an eighth process of performing a service for the corresponding event and returning to the seventh process when an event occurs in the seventh process.

FIG. 13 is a service flowchart for the remote information of FIG. 12, FIG. 14 is a service flowchart for the data service request of FIG. 12, and FIG. 15 is a telemetering service flowchart of FIG. First, referring to the overall system configuration, the main controller 222 is connected to the first main controller MC1 in an active state and the second main controller MC2 in a stand-by state through a redundant communication path 519. The main controller 221 is connected to the multiplexer controller 222 configured as the first-Nth multiplexer controllers MUXC1-MUXCN through a parallel bus 512 and a serial bus 513. At this time, the parallel bus 512 is a bus for communicating various service information between the main control unit 221 in the operating state and the multiplexer control unit 222, and the serial bus 513 is the main control unit 221 and the multiplexer control unit 222 in the operating state. It is a bus for communicating operation and maintenance information and various service information when an error occurs in the parallel bus 512.

In addition, one multiplexer controller 222 is connected to 10 multiplexers 2060 including a first multiplexer (MUX1) and a 10th multiplexer (MUX10), and a multiplexed analog bus is connected between the multiplexer controller 222 and the multiplexer 206. 519 and data line 516, clock line 517 and enable line 518 for subscriber selection.

In addition, the one multiplexer 203 is connected with ten subscriber interface units 206 of SIU1-SIU10, which are connected to the multiplexers through the burnt board 301 of the telephone lines 315 and 316 of the respective subscriber interface units 206. 203 is connected.

That is, one multiplexer controller 200 controls 100 subscriber interface units 206. The subscriber interface unit 206 is connected with M1-Mn meters 208, S1-Sn sensors 209, and a terminal 210.

The microprocessor 601 of the main control unit 221 in the normal state is a system timing through the data and timing generator 605 for selecting the multiplexer control unit 222 to the parallel bus 512 via the parallel interface unit 606. Generate a signal

Each multiplexer controller 222 connected to the main controller 221 operates under the control of the main controller 221, and the multiplexer controller 222 sequentially scans the subscriber. At this time, the control unit 701 controls the second timing generator 704 to generate a clock such as 11a through the line 517, and to generate an enable signal such as 11c through the line 518 and the data generator 709. ) Generates an 8-bit data signal such as (11d) on line 516. The clock, enable and data control the multiplexer 203 connected to the multiplexer control unit 222, and are subscriber scanning signals for accessing the analog buses 514 and 515, and the upper four bits of the 8-bit data are the multiplexer 222. ), And the lower 4 bits are data for selecting the switch 905 of the multiplexer 222. The serial-to-parallel converter 901 of the multiplexer 203 that receives the data clock and the enable signal, which are the subscriber scanning signals, converts the serial data input through the lines 516, 517, and 518 into parallel data and outputs the same to the bus 711. The parallel data on the bus 711 is applied to the multiplexer ID generator 902 and the decoder 903.

At this time, the multiplexer ID generation unit 902 combines the contents of the address selector 801 generating its ID signal with the upper 4 bits of the data as shown in (11b). Enable 903) to load the lower 4 bits of data on bus 711.

The decoder 903 decodes the loaded data and turns on the corresponding switch 705 through the driver 704 and connects the telephone lines 313 and 314 on the subscriber side with the telephone lines 514 and 515 of the multiplexer controller 222. To form a communication path.

At this time, when the ID of the multiplexer ID generator 801 and its input data are different, a signal for clearing the output of the decoder 903 is output to turn off all the switches 905 of the multiplexer 203.

In the normal state, the subscriber interface unit 206 outputs the pilot frequency, which is an excellent tone of the voice band, through the telephone line interface 1010 through the telephone line 315 and 316 through the pilot frequency generator 1009. However, when an alarm is generated or a data service request signal is generated through the sensor interface 1003 or the UART 1006, the microprocessor 1001 controls the pilot frequency generator 1009 to notify that the event is generated by removing the pilot frequency.

That is, when the sensor 209 is operated by the alarm (tele arm) generation, the subscriber interface unit 206 recognizes the occurrence of the alarm event through the sensor interface unit 1003, and drives the buzzer 211 An alarm is generated by driving the alarm and the display and the switching unit 212. At this time, the buzzer 211 is stopped by pressing the alarm cut-off switch of the display and switching unit 212, and the alarm display continues to be driven until the event is removed. In addition, the alarm sound operates regardless of the type of alarm event, and the alarm display is configured to drive a lamp according to each type so that the user can detect the type of alarm.

In addition, when the data service request signal is generated by the terminal 210, the subscriber interface unit 206 sends a message to the terminal 210 and removes the pilot frequency.

At this time, a communication path is established between the subscriber interface unit 206 and the multiplexer control unit 222 by the subscriber scanning signal which is clock data and an enable signal such as (11a)-(11c) generated by the multiplexer control unit 222 as described above. Once formed, the multiplex control unit 222 accesses the analog buses 514 and 515 and analyzes the pilot and ring detection unit 707 and the hook detection unit 708 in the subscriber's telephone line state in the section (T1) of (11d). . In the case of ring and hook-off detection, in this case, the telephone set 207 must maintain the normal call function through the switch 205, thereby removing the subscriber scanning signal, thereby making the telephone lines 313 and 314 free. In addition, it is not in the hook and ring detection state, and when the pilot frequency is detected, the normal operation is performed as described above.

At this time, if the pilot signal is not detected on the telephone line 315-316, it is the case that an alarm or data service request signal is generated. Therefore, the modem 706 and the modem 1008 should be replaced as in the section (T2) of step (11e) (11f). Set-up, the multiplexer control unit 222 communicates between arbitrary subscriber interface units 206, such as the sections T4 and T5, and analyzes the communication result. That is, if the pilot frequency is not detected during the random subscriber interface unit 206 scanning, the multiplexer controller 222 sets up the modem 706 and transmits data to the subscriber interface unit 206 asking the reason for the pilot frequency removal. do. At this time, when the subscriber interface 206 receives data on the reason for the pilot frequency removal, the subscriber interface 206 transmits the data on the pilot frequency removal, that is, the data on the alarm generator data service request factor, to the multiplexer controller 222 along with the corresponding port number. .

The multiplexer control unit 222 receiving the data transmits the data to the main control unit 221 along with its address through the parallel bus interface 703, and the main control unit 221 analyzes the received data to analyze the corresponding host computer. Send to 201. In this case, the host computer 201 may perform a comprehensive disaster prevention security service for remote information generation by connecting a method disaster prevention center (Alam Service Center) that is a utility center 200 when the information on the alarm.

In addition, in the data service process, the host computer 201 analyzes this and accesses the corresponding service information through the data bank, which is the utility center 200, and transmits the corresponding service information to the corresponding terminal through the subscriber interface unit 206.

In the case of telemetering, when the utility center 200 requests the telemetering service from the host computer 201, the host computer 201 outputs the telemetering service to the main controller 221 through the parallel bus 512. The main controller 221 outputs this data to the multiplexer controller 222 together with the address of the multiplexer controller 222. At this time, the multiplexer controller 222 analyzes the address and receives telemetering data in the case of the self address, and does not receive the telemetering data in the case of the self address. In the case of the self address, the multiplexer controller 222 receives data through the parallel bus interface 512 and performs the subscriber scanning process to give a meter reading command to the subscriber interface unit 206 per gram. At this time, when the subscriber interface unit 206 receives the meter reading command, the subscriber interface unit 206 reads the value of the meter 209 and sends it to the multiplexer control unit 222, and the multiplexer control unit 222 transmits the telemetering information to the main control unit 221. Send it.

At this time, the host computer 201 receives the telemetering information from the main controller 221 and transmits the telemetering information to the utility center 200, and then terminates the telemetering service.

First, referring to FIG. 12, the operation of the comprehensive remote information service system will be described. After the system initialization is performed in step (A1), the multiplexer controller 222 sequentially processes each subscriber interface unit in step (A2). Scanning step 206, and in step (A3) to check the pilot frequency status on the telephone line 235 of the subscriber interface unit 206 to check the event occurrence. When the multiplexer controller 222 detects a hook or ring signal in this step, a voice call service is performed through the switch 205 by forming a call path between the telephone 207 and the switch 205 regardless of an event occurrence.

At this time, when the event occurs in step (A3), in step (A4), the main control unit 221 analyzes the data transmitted from the subscriber interface unit 206 through the communication path formed by the multiplexer control unit 222 to apply remote information or data. Check for service request. In the step (A4), the remote information pause in step (A5), the main controller 221 transmits the generated alarm data to the corresponding host computer 201, and returns to the step (A2).

In the step (A4), the data service request date and time in step (A6), the main control unit 221 transmits the data service request signal to the host computer 201, the host computer 201 analyzes it for the corresponding information The service is transmitted to the subscriber interface unit 206 to perform data service.

At this time, in step (A7) it is checked whether the data service execution time exceeds a predetermined execution time. The data service execution time refers to a time for serving data on one screen of the terminal 210 according to the transmission speed of the modem. In the case of a modem of 1200bps, the time for transmitting data to one screen of the terminal 210. Is about 20 seconds.

The reason for checking the data service execution time as described above is that the multiplexer control unit 222 sequentially scans another subscriber interface unit, in particular, to service it first when a remote alert occurs.

In step (A7), it is checked whether there is a standby subscriber in step (A8) within a predetermined time, and when there is no subscriber in standby, the process returns to step A20, and when there is a subscriber in standby (A6). Returning to step), the corresponding data is re-serviced. In other words, the standby subscriber is a subscriber who requested data service in the data service or alert service state for any subscriber. After the service to the subscriber is completed, the data service requesting subscriber can be serviced.

When the data service execution time is exceeded in step (A7), subscriber scanning is performed as in step (A2) in step (A9), and then, in step (A10), the occurrence of an event is checked.

When no event occurs in step (A10), the process returns to step (A6) to service data whose service execution time is exceeded in step (A7), and when an event occurs, as in step (A4) in step A10. Check for alerts or data service requests.

At this time, in step (A11), the alarm date and time to transmit the alarm prior to the data service request, and transmits the alarm as in step (A5) and returns to step (A6), the data service request date and time of the current data request subscriber In step (A13), the subscriber registers as a subscriber in a normal state and returns to step (A6).

The telemetering service is mainly hosted by the host computer 201 and driven by the request of the utility center 200.

If the utility center 200 requests the telemetering service to the host computer 201 at step (A14), the host computer 201 is a port for performing the telemetering service to the main control unit 221 at step (A15). The main controller 221 analyzes the telemetering information and transmits the address of the multiplexer controller 222 corresponding to the corresponding information. At this time, the multiplexer control unit 222 corresponding to the address performs a subscriber scanning to form a communication path.

After performing the above process, in step (A15), the host computer 201 performs a telemetering service of reading the value of the meter 208 through the subscriber interface unit 206 and transmitting it to the utility center 200. .

Thereafter, in step (A16), it is checked whether the execution time of the telemetering service exceeds a predetermined time. If the telemetering service is performed for a predetermined time, the service for the alarm occurrence or data service request during that time (about 10 seconds) is performed. This is to check whether there is an event for alarm or data service request even in telemetering service.

If the telemetering service is completed within a predetermined time in step (A61), the process returns to step (A2).

However, if the telemetering service time exceeds a predetermined time in step (A16), the subscriber scanning is performed in step (A17) to check whether an event occurs in step (A18), and when there is no event (A15) Return to step) to continue the telemetering service.

When an event occurs in step (A18), the process returns to step (A19) to analyze whether the generated event is due to an alarm or a data service request, and when it is due to an alarm, an alarm is performed as in step (A5). After transmission, the process returns to step (A15) and the data service request date and time performs the data service as in step (A6), and returns to step (A15) to re-execute the telemetering service being performed.

The process of the alarm service in FIG. 12 will be described in detail with reference to FIG.

When the sensor 209 detects any alarm generation state through the sensor interface unit 1004, the subscriber interface unit 206 controls the buzzer 211 and the display and switching unit 212 to display the corresponding alarm generation state. And driving in an audible state, controlling the pilot frequency generation 1009, and supplying the telephone lines 315 and 316 to remove the fine rope frequency, which is a tone outside the voice band.

At this time, the multiplexer controller 202 reaches the subscriber interface unit 206 while scanning the multiplexer 203 through the clock data and the enable signal such as (11a)-(11c), and the multiplexer controller 222 and the corresponding subscriber interface. Connect with unit 206 (when there is no event detection, the scanning time of all subscribers is only a few seconds).

At this time, when the multiplexer controller 222 detects an event tycoon while detecting a state (hook, ring, or event) on the telephone lines 315 and 316 of the corresponding subscriber interface unit 206, the modem carrier (Modem carrier) Is output to the subscriber interface unit 206, and the subscriber interface unit 206 detects the modem carrier and outputs an acknowledgment signal for the modem carrier. When the modem is set up, the multiplexer control unit 222 sends an interrogation message to the subscriber interface 206 inquiring about the type of event occurrence. In this case, an alarm message) is transmitted.

Then, the multiplexer controller 222 analyzes the message and transmits the alarm information according to the number of the subscriber port and the event type to the main controller 221 through the parallel bus interface 703. The main controller 221 analyzes the message transmitted from the multiplexer control unit 222 and informs the host computer 201 of the address subscriber's port number and the event type of the multiplexer control unit 222 through the communication path 511.

At this time, the host computer 201 analyzes the output of the main control unit 221 and transmits a telephone number, an address, and an alarm type for the subscriber port to the disaster prevention center, and receives an OK message for the received alarm. Send to the subscriber interface 206.

At this time, when the subscriber interface unit 206 controls the pilot generator 1009 to generate a pilot frequency on the telephone lines 315 and 316, the multiplexer controller 222 communicates with the multiplexer 203 by this signal. A disconnect command is issued to cut the communication path between the multiplexer control unit 222 and the subscriber interface unit 206.

When the alarm occurs as described above, the service operation is performed, but the disaster prevention center also has a terminal that can have alarm information and a module that can generate an audible alarm, so that the terminal informs the type of alarm and generates an audible alarm through the telephone line. At the disaster prevention center, if an audible alarm is generated, the alarm can be blocked by operating the alarm cut-off and the alarm information can be checked through the terminal.

Secondly, the service process at the time of data service request will be described in detail with reference to FIG.

When requesting a data service through terminal 210, subscriber interface unit 206 outputs a response message to the request to terminal 210 and removes pilot frequencies on telephone lines 315 and 316. Except for generating the pilot frequency on the telephone line after outputting the data service request message, the process of transmitting a data service request message to the corresponding host computer 201 by forming a communication path is the same as the operation of the alarm service.

In this case, the host computer 201 outputs a menu message to the corresponding terminal 210 through the connected communication path, and the terminal 210 outputs a menu command to the host computer 210.

The host computer 201 then transmits the result data according to the menu command to the terminal 210 via the formed communication path.

After the transmission of the result message, the multiplexer controller 222 disconnects the communication path between the multiplexer 203 and the subscriber interface unit 206.

If the subscriber interface unit 206 outputs the data service request message to the multiplexer control unit 222 during the operation, the terminal cannot be used to service the request data in the current state due to service of any other subscriber. If the request message can be serviced by the state change, the request message can be transmitted to the host computer 201 to perform the corresponding data service.

Third, the telemetering service flow will be described with reference to FIG. Since the telemetering service generates an event for the telemetering service from the host computer and terminates as the host computer 201 receives the result of the telemetering service, the subject of this service is determined by the host computer 201. do.

When the host computer 201 receives a command for the telemetering service from the utility center 200, the host computer 201 analyzes the command and transmits information about the port number, the number of meters, the meter pods, and the like of the address subscriber of the multiplexer controller 222. The main controller 211 transmits to the main control unit 211 through 511.

At this time, the main controller 221 converts the serial data applied from the host computer 201 in parallel, analyzes the telemetering command, and transmits the command to the corresponding multiblack card controller 222. Then, the multiplexer control unit 22 sequentially connects the communication paths by scanning the corresponding subscribers according to the telemetering information.

After that, the multiplexer control unit 222 checks the state of the connected telephone line, and when the busy state is busy, the multiplexer control unit 222 cuts the connected communication path.

When the state of the telephone line is normal, the telemetering command is output to the corresponding subscriber interface unit 206 through the communication path connected from the multiplexer control unit 222, and the subscriber interface unit 206 reads the meter 208 value. To be transmitted back to the multiplexer controller 222.

When the multiplexer controller 222 receives the telemetering data, the multiplexer controller 222 transmits the data to the main controller 221 and at the same time gives a disconnect command to the multiplexer 203 to cut the communication path.

At this time, the main controller 221 transmits the reading result data (subscriber number, meter, meter reading value, etc.) received through the multiplexer control unit 222 to the host computer 201, the tele bus of the parallel bus interface 706 The metering state is always inspected, and when a status signal is issued, the reading result data generated in the multiplexer control unit 222 is read.

The host computer 201 outputs meter reading information to the utility center 200.

As described above, in the remote information service system using the exchange, it is possible to smoothly perform the service of the remote data regardless of the type of the exchange and the test trunk type, and the telemetering service because it is a two-way service rather than a one-way service. In addition, various remote information signals or terminals can be used to perform data communication services, thus enabling a comprehensive remote information service system, and plugging in a plug-in type between the main switchboard and the carbon board. If you do, you can service the subscriber before joining the exchange without any additional wiring work. This makes it easy to install the system and greatly reduce the installation cost. By connecting the The system can be safely protected to improve the reliability, and by detecting the occurrence of the subscriber's event by using the tone out of the voice band, it does not affect the call function, which is the original function of the exchange, and executes the interface of the subscriber. By supplying the national power supply and the indoor commercial garden (110V or 220V) to the component, there is an advantage that the service line can be processed quickly by reducing the telephone line access time.

Claims (2)

A comprehensive remote information service system for processing remote service information generated between a utility center and a subscriber, comprising: a host that interfaces information with the utility center and manages the system, and generates predetermined telemetering command information when a telemetering command is generated. A terminal is connected to a computer 201, a telephone line connected in parallel with a telephone, and a telemeter generating meter reading information, a sensor generating remote information, and a data service, and generating an event signal on the telephone line when an event occurs. The subscriber interface unit 206, which generates event information and subscriber port information in response to a call message, is connected between the main switchboard and the carbon board, which collectively connect the telephone line to the exchange, and connects the subscriber interface unit by a predetermined subscriber scanning signal ( A multiplexer 203 forming a communication path with 206, Interfacing information of the multiplexer controller 222, which is driven by a predetermined selection address signal, to generate a subscriber scanning signal for sequentially scanning the subscriber face unit 206, and the information of the host computer 201 and the multiplexer controller; And a main control unit (221) for generating an address signal for selecting the multiplexer based on information of a host computer. Interfacing with the utility center and managing the system to process various service information, and when the telemetering command is generated, the host computer that generates information about the meter reading command and the telephone line are connected in parallel with the telephone, and the meter information, alarm signal and data It is connected between the subscriber interface unit connected to the means for performing the service to generate various event occurrence statuses and service information, and the main switchboard and the bullet board connecting the telephone lines to the switchboard, and corresponding to the predetermined subscriber scanning signal. A multiplexer controller which forms a communication path with the subscriber interface unit 206, a multiplexer controller which is driven by a predetermined selection address signal to generate a subscriber scanning signal for sequentially scanning the subscriber interface unit 206, and the host computer; Information from the multiplexer control A comprehensive remote information system having a main control unit for interfacing and generating an address signal for selecting the multiplexer based on information of the host computer, wherein the multiplexer controller sequentially scans subscribers and analyzes types of events generated when an event occurs. A second process of transmitting a corresponding alarm to the host computer when the event occurs in the first process and returning to the first process, and data requested by the event in the first process Performing a service, checking whether the execution time is within a data service execution time of one subscriber, and performing a data service of one subscriber in the third process and returning to the first process if it is not in a standby state. Event is triggered by scanning subscribers sequentially when time exceeds A fourth process of returning to the third fixing when an event does not occur, a fifth process of performing a service according to the corresponding event when the event occurs in the fourth process, and returning to the third process; When the host computer requests the telemetering service at a certain period, the sixth process of returning to the first process when the telemetering service is performed for the request and terminates within the prescribed telemetering service execution time; and the sixth process In the event that the execution time is exceeded in the step by sequentially scanning the subscriber to check the occurrence of the event, if there is no event, the seventh step of returning to the sixth process, and when the event occurs in the seventh process performs the service for the event and Comprehensive remote information service method comprising the eighth process to return to the seventh process.

Images