KR20000012520U - Repeater used for automatic meter reading system - Google Patents

Abstract

The present invention is to provide a repeater used in the automatic meter reading system. For this purpose, the repeater according to the present invention includes a reset unit, an oscillator, a central controller (CPU), a counter timer circuit (CTC), a decoder, a ROM, a RAM storing meter reading data, a signal provided from a decoder, and a reset signal generated by itself. Chip selection controller to control chip selection for RAM, serial input / output processing unit (SIO) to perform data transmission / reception processing with meter server, RS-232C matching unit and modem, parallel to transmit / receive data by wireless communication method with meter It consists of an input / output processing unit (PIO), a wireless communication unit, and a parallel input / output processing unit (PIO) and a display unit for displaying numeric data in operation of a repeater. Therefore, it is possible for the meter reader to automatically read a plurality of meters operated by a wireless communication method at the place where the meter server is located.

Description

Repeater used for automatic meter reading system

The present invention relates to an automatic meter reading system for a meter (Meter), and more particularly to a repeater (Repeater) used in the automatic meter reading system.

The meter reading system is to read data about the amount of usage detected by the meter. The proposed metering system reads data about the amount of usage detected by the meter through wireless communication with the meter and the meter that can detect the amount of electricity by the electric method. The basic configuration is a host computer that can be connected to a hand terminal and a hand terminal that can be connected to the terminal and analyzes the meter data collected through the hand terminal.

This metering system prevented the occurrence of crime pretending to be a meter reader, and solved some practical problems such as closing or rejecting the meter, but the meter went to a position close to the place where the meter was actually installed and the meter was detected. There is a hassle of having to read a piece of data and take a hand terminal to the place where the host computer is located in order to analyze the read data and obtain information such as billing information.

Recently, the automatic meter reading system using a repeater has been proposed to solve this problem. This automatic meter reading system is configured so that the repeater acquires the metering data for a plurality of meters through wireless communication method, and the obtained metering data is transmitted to the metering server connected through the modem to obtain the processing result such as billing. There is an advantage that can read a plurality of meters in the place where the metering server is installed. However, a specific structure for each functional block has not been proposed yet.

The present invention has been made in accordance with the above-described trend, and an object thereof is to provide a repeater used in the above-described automatic meter reading system.

In order to achieve the above object, the apparatus according to the present invention, the at least one or more meters to the repeater configured to sequentially read the wireless communication method using the unique identification information, and transmit the metered data to the meter reading server through the modem A central controller for controlling the repeater to provide meter reading processing and metered data for the meter to the metering server; A reset unit for initializing the central controller during power-on or reset control; An oscillator providing a reference clock of the central controller; a ROM storing an operating program of the repeater; a RAM controlled by the central controller and sequentially storing the read data in the order of reading; decoding a control signal output from the central controller A decoder for outputting a chip selection signal for the ROM and RAM; Chip selection control unit for controlling the chip selection for the RAM to protect the RAM at the time of power-up in consideration of the signal output from the decoder and the internally generated reset signal; A serial input / output processing unit capable of transmitting and receiving data of the serial structure with the meter reading server through a modem; A wireless communication unit and a parallel input / output processing unit for enabling parallel transmission and reception of data in a wireless communication system with a meter; a display unit capable of displaying all information displayed as numeric information while the repeater is in operation; And a counter timer circuit for providing the reset unit, the serial input / output processing unit, the parallel input / output processing unit, and the central control unit to a result operated by the condition information set by the central controller in synchronization with the clock signal provided from the oscillator.

1 is a block diagram of a repeater according to the present invention used in the automatic meter reading system.

Explanation of symbols for main parts of the drawings

101: reset unit 102: central controller (CPU)

103: Oscillator 104: Counter Timer Circuit (CTC)

105: ROM 106: RAM

107: backup unit 108: decoder

109: chip selection control unit 110: modem

111: RS-232C matching unit 112: serial input / output processing unit (SIO)

113, 115: Parallel input / output processing unit (PIO) 114: Wireless communication unit

116: display unit

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

1 is a functional block diagram of a repeater according to the present invention in an automatic meter reading system, which includes a reset unit 101, a central processing unit 102, an oscillator 103, and a counter timer circuit 104. ROM (ROM, 105), RAM (RAM) 106, backup unit 107, decoder 108, chip select controller 109, modem 110, RS-232C matching unit 111, serial input / output processing unit (Serial Input Output, 112), a parallel input / output processing unit (Parallel Input Output, 113 115), a wireless communication unit 114, and a display unit 116.

The repeater configured as described above is operated as follows.

The reset unit 101 is configured to initialize by providing a reset signal to the central controller 102 when power is applied or the reset key is controlled, and the operation timer is controlled by the counter timer circuit 105.

The central controller 102 controls the repeater to sequentially read the meter for all the meters (not shown) in the jurisdiction in a wireless communication method, and provide the metered result to the meter server not shown.

The oscillator 103 provides a system clock in the repeater, and provides an oscillation signal having a predetermined frequency as a clock signal of the central controller 102, the counter timer circuit 105, and the serial input / output processing unit 112, respectively.

The counter timer circuit 104 operates the counter according to the timer condition set by the central controller 102 in synchronization with the oscillation signal provided from the oscillator 103, and resets the operation result signal to the reset unit 101 and the serial input / output processing unit ( 112, the parallel input / output processing unit 113, and the central controller 102, respectively.

The ROM 105 stores programs necessary for the operation of the corresponding repeater, and is set to an operation mode by a chip select signal provided through the decoder 108, and then a read mode is set by the central controller 102 to perform a necessary program. To the central controller 102.

The decoder 108 decodes a control signal output from the central controller 102 to provide a chip select signal for the ROM 105 and the RAM 106.

The chip select controller 109 outputs a chip select signal for the RAM 106 in consideration of the chip select signal for the RAM 106 provided from the decoder 108 and a reset signal generated internally. The reset signal generated internally is generated at the time of power-up or reset key control as in the above-described reset unit 101 or later than the reset signal generated by the reset unit 101. This is to prevent a malfunction that may occur when the RAM 106 is selected at the time of power-up or reset key control.

After the RAM 106 is set to an operation mode by the chip select controller 109, the RAM 106 sequentially stores meter reading data transmitted while the write mode is controlled, and is stored at a specified address while the read mode is controlled. The meter reading data is transmitted to the central controller 102. The backup unit 107 supplies power so that the information stored in the RAM 106 can be maintained when the power is not applied.

The serial input / output processing unit 112, the RS-232C matching unit 111, and the modem 110 are for transmitting and receiving data in a serial structure with a meter reading server, which is not shown, and requests meter reading data from a meter reading server (not shown). When a signal is transmitted to the central controller 102 or at least one or more communication failures are generated in the read data, the communication failure history is transmitted to a meter reading server not shown.

The parallel input / output processing unit 113 and the wireless communication unit 114 are for transmitting and receiving data in parallel structure to read all the meters (not shown) in the jurisdiction of the corresponding repeater. The meter request signal is transmitted through the wireless communication method, and when the meter reading data corresponding to the request is received by the wireless communication method, the meter is transmitted to the central controller 102. Accordingly, the central controller 102 stores the meter reading data currently received in the predetermined area of the RAM 106 as described above.

The parallel input / output processing unit 115 and the display unit 116 process and display the parallel information when the numeric information required for display is generated from the central controller 102 while the corresponding repeater is operating. The numeric information may be, for example, information related to an error generated during the operation of the repeater.

As described above, with the provision of the repeater according to the present invention, the meter reader can automatically read a plurality of meters at the position where the meter server exists.

Claims (1)

In the repeater configured to sequentially read at least one meter in a wireless communication method using the unique identification information, and to transmit the read data to the meter reading server through the modem 110, A central controller (102) for controlling the repeater to provide meter reading processing and metered data for the meter to the meter reading server; A reset unit (101) for initializing the central controller (102) upon power-up or reset control; An oscillator 103 for providing a reference clock of the central controller 102; A ROM 105 which stores an operation program of the repeater; A RAM 106 controlled by the central controller 102 to sequentially store the read data in the order of reading; A decoder (108) for decoding the control signal output from the central controller (102) and outputting a chip selection signal for the ROM (105) and the RAM (106); A chip select controller 109 for controlling chip selection for the RAM 106 so that the RAM 106 can be protected at the time of power-up in consideration of the signal output from the decoder 108 and the reset signal generated internally. ); A serial input / output processing unit (112) capable of transmitting and receiving data in series with the meter reading server through the modem (110); A wireless communication unit 114 and a parallel input / output processing unit 113 for enabling data transmission and reception of a parallel structure in a wireless communication manner with the meter; A display unit 116 capable of displaying all information displayed as numeric information while the repeater is in operation; The reset unit 101, the serial input / output processing unit 112, and the parallel input / output processing unit 113 output a result operated by the condition information set by the central controller 102 in synchronization with the clock signal provided from the oscillator 103. And a counter timer circuit (104) provided to the central control unit (102).