KR19980066052A - Device for changing communication method of switch controller - Google Patents

Abstract

The present invention relates to an apparatus for changing a communication method of a switch controller, and in particular, by modularizing the communication device to be detachable, to exchange only a module of the communication device without changing the entire hardware of the switch controller when the communication method is changed, so as to be connected to the system network. It was created to be. The present invention is an RS-232 connection 210 for connecting to the RS-232 port of the switch controller, supply power supply 220 for supplying the operating power (+ 5V, ± 15V), and according to each communication method Network connection block 240 for connecting to the network, and the microprocessor 230 for converting the signal, level adjustment, etc. in order to connect the RS-232 connection unit 210 and the network connection block 240. .

Description

Device for changing communication method of switch controller

The present invention relates to a switchgear controller, and more particularly, to an apparatus for changing a communication method of a switchgear controller adapted to automate the switchgear controller in connection with a network.

In general, in a power distribution system, each terminal controller must be connected to a network in order to establish automation of a power distribution system through remote control in a central control room and remote detection of states, current values, and voltage values.

As shown in the block diagram of FIG. 1, the conventional switch controller includes a functional circuit block 110 in which various functions of circuits are integrated, and a signal transmission unit 120 connecting the functional circuit block 110 to a network. It is composed.

The function circuit block 110 may include a microprocessor 111 for processing and controlling an input signal, an analog input unit 113 for inputting current and voltage values, and a digital contact input unit for inputting status information ( 114, a digital contact output unit 115 for a control operation, a display unit 117 for displaying respective operation states and abnormalities, and an operation unit 116 for setting parameters and manual operation.

Referring to the operation of the conventional device as follows.

First, in the function circuit block 110, the operation of the microprocessor 111 is set by the variable setting of the operation unit 116, and the setting contents are displayed on the display unit 117.

If the operation state and abnormality of the switch body are input by the digital contact input unit 114, the microprocessor 111 transmits a control command for the operation of the switch to the switch through the digital contact output unit 115.

The function circuit block 110 performing the above operation is connected to the network by the signal transmitter 120.

The signal transmitter 120 is included in the hardware of the functional circuit block 110 and employs a 1200 bps dedicated line communication method.

However, since the prior art hardware is integrated to adopt a specific communication method, there is a problem in that the entire hardware must be changed in order to change the communication method.

In order to improve the disadvantages of the prior art, the present invention is designed to be detachable and modularized so that the communication device can be detached and the communication device can be exchanged without changing the entire hardware of the switch controller. An object of the present invention is to provide an apparatus for changing a communication mode of a controller.

That is, the present invention is a modularized device to properly change the signal level between the RS-232 communication port and the network of the switch controller in order to connect the existing switch controller to a different network.

1 is a block diagram of a conventional switch controller.

Figure 2 is a block diagram of a communication method change apparatus according to the present invention.

3 is a block diagram showing a configuration in which the apparatus of FIG.

* Explanation of symbols for main parts of the drawings

210: RS-232 connection 220: power supply connection

230: microprocessor 231, 232: signal converter

233: signal amplifying unit 234: signal level adjusting unit

235: transmission signal insulator 236: input signal protection circuit

240: network connection block 241: dedicated line network connection circuit

242: PLC network connection circuit 243: CATV network connection circuit

244 telephone line network connection circuit 245 wireless network connection circuit

The apparatus of the present invention, as shown in the block diagram of Figure 2, the RS-232 connection 210 for connecting to the RS-232 port of the switch controller and the supply for supply of operating power (+ 5V, ± 15V) Signal conversion and level adjustment to connect the power supply connection unit 220, the network connection block 240 for connecting to a network according to each communication method, and the RS-232 connection unit 210 and the network connection block 240 It consists of a microprocessor 230 that performs such.

The microprocessor 230 is a first signal converter 231 for converting an RS232 signal into a TTL level signal, and converting a TTL level signal into an RS-232 signal; A second signal converter 232 for converting a signal to a TTL signal level, a signal amplifier 233 for amplifying input and output signals, a signal level adjuster 234 for adjusting the level of input and output signals, a network, The signal isolator 235 for signal isolation when coupled with the input signal protection circuit 236 for surge protection of the input signal.

The network connection block 240 includes a dedicated line network connection circuit 241, a PLC network connection circuit 242, a CATV network connection circuit 243, a telephone line network connection circuit 244, and a wireless network connection circuit 245. .

Referring to the operation and effect of the device of the present invention configured as described above are as follows.

Operation of the present invention will be described with reference to the configuration of FIG. 3, which divides the apparatus of FIG. 2 into a communication scheme.

The supply power supply connection unit 220 inputs DC power (+ 5V, + 15V, -15V) used in the switch controller as the operating power of the modular communication device.

The RS-232 connection unit 210 is connected to the RS-232 shaft of the switch controller to perform communication signal transmission. At this time, the connector uses a 9-pin or 25-pin RS-232 standard connector, and if the switch controller is a modular structure composed of a backplane, the connector is connected according to the RS-232 signal standard of the backplane.

In the microprocessor 230, the signal converters 231 and 232 and the signal level adjusting unit 234 convert the RS-232 level communication signal of the switch controller into the TTL level, and convert the signal of the TTL level into an appropriate level signal. Convert.

The microprocessor 230 is connected to the network connection block 240, each of the independent line dedicated network connection circuit 241, PLC (Power Line Carrier) network connection circuit 242, CATV network connection circuit 243, By connecting to a desired network through one of the telephone line network connection circuit 244 and the wireless network connection circuit 245, the switch controller is equipped with a module suitable for the communication method of the network to be connected.

The leased line network connection circuit 241 includes a signal conversion unit for a leased line network and a leased line network connection to connect a communication signal from the switch controller to a 4-wire leased line network, and includes a connector for the leased line network.

The PLC (power line carrier) network connection circuit 242 is composed of a PLC network signal conversion unit and a PLC network connection unit to connect the communication signal from the switch controller to the PLC network, and includes a PLC network connector.

The CATV network connection circuit 243 is composed of a CATV signal conversion unit and a CATV network connection unit so as to connect the communication signal from the switch controller to the CATV network, and includes a coaxial connector for the CATV network.

The telephone line network connection circuit 244 is constituted by a signal conversion unit for telephone line network and telephone line network connection so as to connect the communication signal from the switch controller to the telephone line network, and has a connector for telephone line network.

The wireless network connection circuit 245 includes a signal conversion unit for a wireless network and a wireless network connection unit for connecting a communication signal from the switch controller to the wireless network, and includes a connector for a wireless network.

Therefore, the present invention can be connected to the system network when attached to a terminal device equipped with an RS-232 port, and when the PLC network connection circuit 242 is connected, the signal processing method can be converted into a PLC method and connected to the PLC network. When the CATV network connection circuit 243 is connected, the signal processing method can be converted into a CATV modem method and connected to the CATV network. When the telephone line network connection unit 244 is connected, the signal processing method is converted into the telephone line signal method. It is possible to connect to a telephone line network, and when the wireless network connection unit 245 is connected, the signal processing method may be converted into a wireless signal method to access the wireless network.

That is, according to the present invention, it is possible to attach only a modular device to a desired network without changing the overall hardware of the switch controller.

As described in detail above, the present invention may be installed in a controller equipped with an RS-232 port and connected to a system network. As a result, the performance of the system can be improved and the user can be satisfied.

Claims (3)

RS-232 connection unit 210 for connecting with the RS-232 port of the switch controller, supply power supply connection 220 for supplying operating power (+ 5V, ± 15V), and a network for each communication method Switch for specifying the network connection block 240 and the microprocessor 230 for performing the signal conversion, level adjustment, etc. in order to connect the RS-232 connection unit 210 and the network connection block 240 Device for changing communication method of controller. The microprocessor (230) of claim 1, wherein the microprocessor (230) includes a first signal converter (231) for converting an RS232 signal into a TTL level signal and a TTL level signal into an RS-232 signal, and converting the TTL level signal into a network. A second signal converter 232 for linking or converting a signal of a network to a TTL signal level, a signal amplifier 233 for amplifying input / output signals, and a signal level adjuster 234 for adjusting levels of input and output signals ), A signal isolating unit (235) for signal isolation in connection with a network, and an input signal protection circuit unit (236) for preventing surge of the input signal. The network connection block 240 is a dedicated line network connection circuit 241, PLC network connection circuit 242, CATV network connection circuit 243, telephone line network connection circuit 244 and wireless network connection circuit ( An apparatus for changing a communication method of a switch controller, characterized in that any one of the circuits 245 is selected and configured independently.