KR101008655B1 - Method and apparatus for communication control using n-core cable - Google Patents

Abstract

PURPOSE: A method and a device for controlling communication are provided to prevent data loss by discharging a communication line before data is transmitted. CONSTITUTION: An input unit(205) receives transmission data. A charging unit(210) generates and charges current corresponding to a preset volt. A controller(250) generates and outputs a discharge control signal. A discharging unit(220) discharges the communication line according to a discharge control signal of the controller. A transmission unit(230) transmits the pulse corresponding to the transmission data through a communication line. A k core line among the n core wires is a communication line for data communication. An m core line among the n core wires is a power line for supplying power to the connection target.

Description

Method and apparatus for communication control using core wires {Method and apparatus for communication control using n-core cable}

The present invention relates to communication control using an electric wire, and more particularly, to a communication control method and apparatus using an n-core electric wire to control communication through an n-core electric wire for supplying power to a device to be connected in more detail.

Typically, hundreds of volts of current flow through power lines connected to motor control centers (MCCs) and field panels. As a result, mutual induction voltages are generated due to the inductor component impedance of the plurality of power lines themselves. Thus, in general, low-voltage communication (RS 232C or RS422 / 485) is a communication failure caused by the induced voltage was not able to general communication. Thus, the electric motor control device and the field panel connected the electric wires by dozens of normal wires for the operation and status monitoring signals, and performed the control through the method of electrical insulation or electrical application. For this reason, the motor control apparatus is connected to the respective internal configuration modules in the field panel through power lines, respectively, for operation and condition monitoring of each internal configuration module in the field panel. Here, the distance between the electric motor control device and the field panel is from several tens of meters (m) to several hundred meters. Therefore, the wire between the motor control device and the field panel has a problem in that a lot of construction cost is consumed as the wire is increased in proportion to the number of internal components included in the field panel connected to the motor control unit.

In addition, when the field panel connected to the electric motor device is changed, there is a problem in that unnecessary cost is consumed because the wires must also be changed together for the field panel control.

An object of the present invention is to provide a communication control method and apparatus capable of controlling devices connected through an n core wire including a plurality of communication lines.

In addition, the present invention is to provide a communication control method and apparatus using an n-core wire that can reduce the cost of replacing the wires according to the change of the target device to be connected separately.

In addition, the present invention does not connect each power line with each internal module of the target device to be connected in order to electrically insulate or apply each internal component module of the target device to be connected according to the change of the target device to be connected. An object of the present invention is to provide a communication control method and apparatus using n-core wires that can enhance convenience.

According to one aspect of the invention, there is provided a communication device for controlling communication via an n (arbitrary natural number) core wire.

According to an embodiment of the present invention, a communication device for controlling communication through an n (arbitrary natural number) core wire, comprising: an input unit for receiving data to be transmitted; A charging unit which generates and charges a current corresponding to a predetermined volt; A control unit for generating and outputting a discharge control signal for transmitting the data through a communication line; A discharge unit configured to discharge and discharge the communication line according to the discharge control signal; And a transmitter for switching the current charged by the charging unit to a solid state relay and converting the current into a pulse corresponding to the data to transmit through the communication line discharged by the discharge unit. A k (n or less natural number) core line among the n core wires is a communication line for data communication, and an m (n or less natural number) core line is a power supply line for supplying power to a receiving device. An apparatus may be provided.

The discharge unit may discharge and discharge the communication line in one pulse transmission period under the control of the controller.

The discharge unit may discharge the communication line so as to correspond to a predetermined period before the first pulse transmission and the last pulse transmission corresponding to the data under the control of the controller.

The discharge unit may short-circuit the communication line to lower the induced potential difference of the communication line to be lower than a predetermined reference value, and discharge the discharge line.

The data is control command or feedback data for controlling a connection target device connected to the communication device.

The charging unit may be charged by generating a current of DC 100 volts or more and DC 350 volts or less by receiving an AC voltage of 70 volts or more and less than 250 volts.

According to another aspect of the present invention, a method is provided for a communication device to control data communication over an n (arbitrary natural number) core wire through which a current flows.

According to an embodiment of the present invention, a method of controlling a data communication through an n (arbitrary natural number) core wire through which a current flows, the method comprising: receiving a communication command and data to be transmitted; Generating and charging a current corresponding to a predetermined volt required to transmit the data by using a current applied through a power line; Generating a discharge control signal for discharging a communication line for transmission of the data according to the communication command; Discharging and discharging a communication line in predetermined cycle units according to the discharge control signal; And converting the charged current into a solid state relay, converting the charged current into a pulse corresponding to the data, and transmitting the discharged current through a discharged communication line, wherein k (n) of the n core wires is used. The following natural line) core line is a communication line for data communication, m (n or less natural number) core line may be provided with a communication control method characterized in that the power supply line for power supply to the receiving device.

The discharging and discharging of the communication line in predetermined cycle units according to the discharge control signal may be a step of discharging and discharging the communication line in one pulse period according to the discharge control signal.

Discharging and discharging the communication line in one pulse period according to the discharge control signal may include shorting the communication line to lower the induced potential difference of the communication line to be lower than a predetermined reference value, and discharging the short circuit to release the discharge. Can be.

By providing a communication control method and apparatus using a wire according to the present invention, there is an advantage that can control the devices connected through the n-core wire including a plurality of communication lines.

In addition, the present invention does not need to replace the wire separately in accordance with the change of the target device to be connected has the advantage of reducing the cost of replacing the wire.

In addition, the present invention does not connect each power line with each internal module of the target device to be connected in order to electrically insulate or apply each internal component module of the target device to be connected according to the change of the target device to be connected. There is also an advantage that can improve convenience.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

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

The present specification relates to a method and an apparatus for controlling an operation of each internal component module of a connection target device connected to the motor control device by the motor control device. The motor control apparatus according to the present invention is connected to the respective apparatuses through n core wires. In the present specification, for convenience of understanding and description, each device connected to the motor control device will be referred to as a connection target device. In addition, the n core wire connecting the motor control device and the device to be connected includes an m core line for supplying power to the device to be connected (i.e., applying current) and a k core line for transmitting and receiving data to and from the device to be connected. It consists of.

Therefore, in the present specification, the m core line is referred to as a power supply line, and the k core line is referred to as a communication line.

1 is a diagram illustrating a connection between devices for controlling a motor according to an embodiment of the present invention.

For convenience of understanding and explanation, each device connected for controlling the motor will be referred to as a communication device 110 and a connection target device 120 as shown in FIG. 1.

The communication device 110 and the connection target device 120 may each be any one of an electric motor control device for controlling an electric motor and a field panel connected to the electric motor control device. That is, the communication device 110 may be a power control device or a field class. In addition, the connection target device 120 may also be an electric motor control device, or may be a field class.

In the following description, when the motor control device is a subject transmitting data, it should be interpreted as referring to a communication device, and the field panel should be interpreted as a device to be connected. On the other hand, if the field group is the entity that transmits data, the communication device should be interpreted as referring to the field group, and the motor control device should be interpreted as the device to be connected.

The communication device 110 and the connection target device 120 are connected through the n core wire 130. N is a natural number of 4 or less. In the following description, it is assumed that the n core wire is a 4 core wire for the purpose of convenience of understanding and explanation.

As described above, among the n core wires, the m core line is a power line for supplying power to or supplying power from the device to be connected, and the k core line is a communication line for data transmission and reception with the device to be connected. . K is a natural number of 2 or less, and m is a natural number of (n-k).

2 is a block diagram schematically illustrating an internal configuration of a communication device according to an embodiment of the present invention, and FIG. 3 is a diagram illustrating data transmission through an n-core wire according to an embodiment of the present invention.

2, a communication device 200 according to an embodiment of the present invention includes an input unit 205, a charging unit 210, a discharge unit 220, a transmitter 230, a receiver 240, and a controller 250. It is configured to include.

The input unit 205 is a control command for controlling the communication device 200 and a means for receiving data to be transmitted. For example, the input unit 205 may be implemented as one or more command buttons, key buttons, and the like. For example, the input unit 205 may be implemented as a touch screen.

The charging unit 210 receives a current of an AC voltage of a predetermined volt, and generates and charges a current corresponding to the DC voltage of a predetermined volt using the applied AC voltage.

As described above, the communication apparatus according to the embodiment of the present invention performs data communication through a communication line in a state of being connected through an n core wire. As described above, the communication line may be a k core line among n core wires. As mentioned above, the n-core wire through which current flows generally causes signal attenuation due to resistance, inductor, capacitor components, and the like. Therefore, in order to solve this problem, the communication device 200 according to the embodiment of the present invention generates a predetermined DC current through the charging unit 210 to solve the communication failure due to signal attenuation, and through the corresponding charging unit 210. Charged currents can be switched to solid state relays to generate and transmit the corresponding pulses.

For example, the charging unit 210 may receive a current according to an AC voltage of 70 volts or more and 250 volts or less, and generate and charge a current corresponding to a DC voltage of 100 volts or more and 350 volts or less using the same. have.

The discharge unit 220 discharges and discharges the communication line at predetermined intervals according to the discharge control signal of the controller 250.

In the present specification, an electric discharge is defined as reducing a potential difference between a plurality of communication lines. That is, the discharge unit 220 reduces the potential difference by inducing a relatively high potential level to a low potential level by flowing a current through the anodes of the plurality of communication lines through the conducting wire.

The transmitter 230 switches the current charged through the charger 210 to a solid state relay under control of the controller 250 to convert the data to be transmitted through the input unit 205 into a corresponding pulse. Change and transmit through the communication line.

In the present specification, it is assumed that data is changed to a corresponding pulse by using a solid state relay. However, any relay other than the solid state relay may be applied in the same manner as long as the relay can change data to a corresponding pulse.

For example, the transmitter 230 may transmit a pulse through a communication line among n core wires.

FIG. 3 is a diagram illustrating assuming that the transmitter 230 transmits data using the corresponding communication line when two core lines are set as the communication line among the n core wires.

As shown in FIG. 3, the transmitter 230 transmits a pulse corresponding to the data to the communication line at a predetermined period. Accordingly, the discharge unit 220 discharges and discharges the communication lines at predetermined intervals according to the control of the controller 250.

As illustrated in FIG. 3, the discharge unit 220 discharges the communication line to prevent data loss before transmitting data from the transmitter 230 (that is, before transmitting the first pulse). In addition, the transmitter 230 transmits the first pulse to the communication line corresponding to the discharge of the discharge unit 220. The discharge unit 220 discharges the communication line immediately after the first pulse is transmitted under the control of the controller 250. In addition, the discharge unit 220 releases the discharge at the time when each pulse is transmitted through the transmitter 230.

Therefore, FIG. 3 illustrates a relationship between data transmission (that is, pulse transmission) of the transmitter 230 and communication line discharge and discharge cancellation of the discharge unit 220.

In addition, immediately after the last pulse (the last pulse) is transmitted through the transmitter 230, the discharge unit 220 discharges the pulse sufficiently by a predetermined time so that the corresponding pulse can be smoothly delivered.

Referring back to FIG. 2, the receiver 240 receives data through the porter coupler and transmits the data to the controller 250. The porter coupler is a device for coupling an electrical signal to light, and includes a light emitter and a light receiver. The light emitting unit may be any one of a light emitting diode and a neon lamp, and the light receiving unit may be any one of silicon and a port diode. That is, the port coupler is electrically insulated from the light emitting portion and the light receiving portion. Since the function of the porter coupler is general, detailed description thereof will be omitted.

The controller 250 may be configured to include internal components of the communication device 200 according to an embodiment of the present invention (for example, an input unit 205, a charging unit 210, a discharge unit 220, a transmitter 230, and a receiver ( 240), etc.).

In addition, the controller 250 performs a function of setting a communication mode of the communication device 200 according to a communication command input through the input unit 205. For example, assume that a communication command and data to be transmitted are input through the input unit 205. The controller 250 sets a communication mode according to the communication command. Here, the communication command may be any one of an origination command and a reception command. Therefore, the controller 250 may set the communication mode of the communication device 200 to one of a transmission mode and a reception mode according to the communication command.

The control unit 250 generates a discharge control signal in response to the input communication command and transmits the discharge control signal to the discharge unit 220, and generates data and a transmission control signal to output the transmission unit 230. Accordingly, the discharge unit 220 may perform discharge and discharge release in predetermined cycle units according to the discharge control signal. In addition, the transmitter 230 may convert data into pulses and transmit each pulse through a communication line.

4 is a flowchart illustrating a method of transmitting data by a communication device according to an embodiment of the present invention. Each step described below is performed by each internal component of the communication device 200, but will be collectively described as the communication device 200 for the convenience of understanding and explanation.

In operation 410, the communication device 200 receives a communication command and data to be transmitted. For convenience of understanding and explanation, it is assumed that the communication command is an outgoing command. Here, the data may be a control command or feedback data for controlling the connection target device.

In operation 415, the communication device 200 receives a current corresponding to an AC voltage of a predetermined volt, and generates and charges a current of the DC voltage of the predetermined volt using the current.

In this embodiment, it is assumed that step 415 is performed after step 410, but step 415 may be performed in parallel with step 410 or before step 410.

In operation 420, the communication device 200 generates a discharge control signal in response to the communication command. The discharge control signal may include a time period for discharging and discharging the discharge. In addition, the discharge control signal may be generated at a predetermined time period.

In operation 425, the communication device 200 discharges and releases the communication line according to the discharge control signal. That is, the communication device 200 applies a current to the conductive line of the communication line among the n core wires, lowers a signal having a high potential level to discharge the signal, and releases it. The communication device 200 may repeatedly perform discharging and discharging discharge on the communication line at predetermined time periods.

In step 430, the communication device 200 switches the current of the charged DC voltage to the solid state relay to generate a pulse corresponding to the data, and transmits it through the communication line. As described above, the k core line among the n core wires is a communication line for data communication, and may generate and transmit a pulse corresponding to data through the corresponding communication line.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

1 is a diagram illustrating a connection between devices for controlling a motor according to an embodiment of the present invention.

2 is a block diagram schematically illustrating an internal configuration of a communication device according to an embodiment of the present invention.

3 is a diagram illustrating data transmission through an n core wire according to an embodiment of the present invention.

4 is a flowchart illustrating a method for transmitting data by a communication device according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

205: input unit

210: charging unit

220: discharge part

230: transmitter

240: receiver

250: control unit

Claims (9)

A communication device for controlling communication via an n (arbitrary natural number) core wire, An input unit for receiving data to be transmitted; A charging unit which generates and charges a current corresponding to a predetermined volt; A control unit for generating and outputting a discharge control signal for transmitting the data through a communication line; A discharge unit configured to discharge and discharge the communication line according to the discharge control signal; And It includes a transmitter for switching the current charged by the charging section to a solid state relay (solid state relay) to convert the pulse (pulse) corresponding to the data through the communication line discharged by the discharge unit, Among the n core wires, a k (n or less natural number) core line is a communication line for data communication, and an m (n or less natural number) core line is a power line for supplying power to a connection target device. Device. According to claim 1, And the discharge unit discharges and discharges the communication line in one pulse transmission period under the control of the controller. The method of claim 2, And the discharge unit discharges the communication line so as to correspond to a predetermined period before the first pulse transmission and the last pulse transmission corresponding to the data under the control of the controller. According to claim 1, And the discharge unit short-circuits the communication line to lower the induced potential difference of the communication line to be lower than a predetermined reference value, and discharges the short-circuit to release the discharge. According to claim 1, And the data is a control command or feedback data for controlling a connection target device connected to the communication device. According to claim 1, And the charging unit receives an AC voltage of 70 volts or more and less than 250 volts to generate and charge a current of 100 volts or more and a DC of 350 volts or less. A method in which a communication device controls data communication through an n (arbitrary natural number) core wire through which a current flows, Receiving a communication command and data to be transmitted; Generating and charging a current corresponding to a predetermined volt required to transmit the data by using a current applied through a power line; Generating a discharge control signal for discharging a communication line for transmission of the data according to the communication command; Discharging and discharging a communication line in predetermined cycle units according to the discharge control signal; And Switching the charged current to a solid state relay, converting the charged current into a pulse corresponding to the data, and transmitting the discharged current through a discharged communication line; Among the n core wires, a k (n or less natural number) core line is a communication line for data communication, and an m (n or less natural number) core line is a power line for supplying power to a connection target device. Control method. 8. The method of claim 7, Discharging and discharging the communication line in predetermined cycle units according to the discharge control signal may include: Discharging and discharging the communication line in one pulse period according to the discharge control signal. 8. The method of claim 7, Discharging and discharging the communication line in one pulse period according to the discharge control signal, And shorting the communication line to discharge the induced potential difference of the communication line below a predetermined reference value, and discharging the short circuit to release the discharge.

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