KR20090022573A - Apparatus for controlling lighting using plc in dmx512 base - Google Patents

Abstract

An apparatus for controlling lighting of DMX(Digital Multiplexer)512 base is provided to control a plurality of lighting device sets at the same time without separate cable by using a power line. An apparatus for controlling lighting of DMX512 base comprises a plurality of lighting module controllers(510, 520, 530), a plurality of lighting modules(610, 620, 630), and a format converter(400). A plurality of lighting modules corresponds to a plurality of lighting module controllers. The format converter converts a format of data. The lighting module controller and the lighting module transmit/receive the data through a power line communication. Each lighting module includes a lighting device and a slave(611~614, 621~624, 631~634). The slave converts the data received from the format converter, controls the lighting device, and transmits operation state of the lighting device to the format converter.

Description

DMX512 based lighting control device using power line communication {Apparatus for controlling lighting using PLC in DMX512 base}

The present invention relates to a lighting control apparatus based on the digital multiplexer (DMX) 512 protocol.

In general, the DMX512 protocol was created by the US Theater Technology Association (USITT) in 1986 to control lighting console dimmers. It can transmit information on up to 512 channels by transmitting data in the form of a data stream. As a transmission protocol, it is currently applied to various lighting control systems such as theaters and stadiums.

1 is a waveform diagram illustrating a DMX512 protocol.

As shown in Fig. 1, the DMX512 protocol remains 'high' during the period when there is no signal to transmit. After signal transmission starts, signal transmission starts. In the DMX512 protocol, when the clock frequency of 250 [Khz] is used as the fundamental frequency, 4 [μS] is treated as one bit, that is, one bit.

The start of signal transmission in the DMX512 protocol is identified by a break section (100). As shown, the brake 100 may be maintained for a maximum of 1 second in a section of a 'low level' state having a size of at least 22 bits. When the brake 100 section ends, a break mark 110 (MAB) section indicating the end of the brake is positioned. The break mark 110 is a high level (HI) section of at least 2 bits.

When the break mark 110 ends, the start code 120 (SC; Start Code) is located. The start code 120 is composed of a start bit (120a, start bit) of 1 bit, a data bit (120b, data bit) of 8 bits and a stop bit (120c, stop bit) of 2 bits, and information about the entire channel. This is the first signal section that contains. After the start code 120, the channel separation mark 140 (MTBF) is placed. The channel separation mark 140 separates the signals between the channels and simultaneously extracts the information signals for each channel.

After the channel separation mark 140 at the rear end of the start code 120 for distinguishing the start code 120, a full channel information signal is continued. As described above, the DMX512 protocol may transmit information on up to 512 channels. Each channel information signal has the same form as the above-described start code 120. That is, the information signal of the first channel 130, which is the first channel, includes one bit of start bits 130a, eight bits of data bits 130b, and two bits of end bits 130c. It consists of a total of 11 bits.

When the channel information signal of the first channel 130 ends, the first channel separation mark 140-1 for distinguishing the first channel 130 is positioned.

Subsequently, the channel information signal of the second channel follows, and when the channel information signal of the second channel ends, a second channel separation mark for separating the second channel is located. In this format, information on up to 512 channels can be conveyed.

The DMX512 communication method is currently connected to the receiving console and a plurality of lights in series, each light is analyzed by the received DMX512 signal to extract the control signal of the magnetic channel is made light control.

2 is a block diagram of a conventional wireless DMX512 lighting control system.

Referring to FIG. 2, the wireless DMX512 lighting control system includes a transmitter and a wireless receiver 50 including a main console 10, a DMX receiver 20, a transmission data converter 30, and a wireless transmitter 40. And a reception side including a reception data conversion unit 60 and an operation control unit 70.

In FIG. 2, the lighting control system will be described based on transmission and reception of a wireless lighting control signal.

The main console 10 is a part for generating DMX512 packet data for controlling on / off and position movement of each lighting fixture. The main console 10 generates packet data using on / off and each axis (X, Y, Z, etc.) of each lighting fixture as one channel. Therefore, if one luminaire performs three-axis movement of the X, Y, and Z axes, four channels are assigned to one luminaire for on / off control and three-axis movement control. It is possible to control the lighting fixtures.

The DMX receiver 20 receives a DMX512 signal from the main console 10 and transmits the signal to the transmission data converter 30.

The transmission data conversion unit 30 classifies one packet DMX512 data received from the main console 10 for each channel according to the synchronization signal of the data, stores the data, and stores the stored data for each location to the wireless transmitter 40 in real time. To transmit.

The wireless transmitter 40 converts data, which is classified for each channel in the transmission data converter 30, in real time, into wireless data, and transmits the data to the outside. As the wireless transmitter 40, a WLAN module is generally used, and a modified protocol in which an algorithm for a protocol is reconfigured to recognize and process a MAB or a special character of a DMX512 signal is used. The wireless transmitter 40 adopts the IEEE802.15.4 and ZigBee standard methods to ensure compatibility with other devices, and particularly to overcome communication obstacles caused by noise caused by electromagnetic waves emitted from electronic devices in the 2.4 GHz band. Spectral spreading method which is strong against noise is applied.

The radio receiver 50 is a part for receiving radio data transmitted from the radio transmitter 40.

The reception data converter 60 analyzes the data received by the wireless receiver 50 and transmits each packet to a corresponding channel.

The operation control unit 70 performs blinking and position control of the lighting device based on the packet data received from the reception data conversion unit 60.

Here, the wireless receiving unit 50, the receiving data conversion unit 60 and the operation control unit 70 is embedded in the lighting.

However, the conventional wireless DMX lighting control system is only one-way to transmit and control the control signal for controlling the lighting device from the main console, and the data reception from the lighting device is impossible. In addition, the maintenance and maintenance of the lighting equipment is expensive because of the inability to check.

In addition, the conventional lighting control system transmits a radio signal to control the lighting device, which makes it difficult to simultaneously control a plurality of lighting device sets that constitute a large-scale lighting device as a set.

In addition, the above-described wireless DMX lighting control system uses a radio signal, there is a limitation therein and there is a problem of signal transmission due to the interference phenomenon of the radio signal.

Accordingly, an object of the present invention is to provide a DMX512-based lighting control device using power line communication to control the lighting device using power line communication to transmit and receive data between the lighting device and the main console to enable bi-directional communication to solve the above problems. Is in.

In addition, an object of the present invention is to provide a DMX512-based lighting control device using a power line communication that can control a plurality of sets of a large number of lighting equipment at the same time because a separate cable is not required and the existing power line is used.

In addition, the object of the present invention is a DMX512-based lighting control apparatus using power line communication that can control the lighting devices without restriction of the distance without being limited by the distance can be controlled in the near distance if the power line-based facility is installed. In providing.

In the DMX512 protocol-based lighting control apparatus according to the present invention for achieving the above object, a plurality of lighting modules corresponding to a plurality of lighting module controller and a plurality of lighting module controller, and power line communication between the lighting module controller and the lighting module And a format converter for converting a format of data to enable data transmission and reception through the lighting module. The lighting module converts data received from the format converter in response to a control target lighting device and a lighting device to which a channel based on the DMX512 protocol is assigned. It characterized in that it comprises a slave to control the lighting device and to transmit the operating state of the lighting device to the format converter.

In addition, the lighting module controller is characterized by outputting the DMX512 signal based on the DMX512 protocol to the format converter.

In addition, the format converter is a DMX512 data receiver for receiving a DMX512 signal for controlling the lighting equipment of the lighting module from the lighting module controller, a first data converter for converting the received DMX512 signal to be transmitted through a power line, and conversion And a power line modem unit for transmitting the transmitted data through a power line.

The lighting control device may further include a computing device for outputting an operating state of the lighting device.

The format converter may further include a host interface for interfacing with the computing device.

The slave may further include a sensor for sensing an operation state of a lighting device, a sensor controller for controlling to receive and transmit a sensing signal sensed by the sensor, a power line modem unit for receiving packet data through a power line and transmitting the sensing signal; And a second data converter for converting the received packet data into a DMX512 signal of the DMX512 protocol for lighting control, and a DMX512 data transmitter for outputting the DMX signal to a corresponding lighting device.

       In addition, the lighting module includes a sensor for sensing the operating state of the lighting device; And a sensor controller configured to receive the sensing signal sensed by the sensor and transmit the received sensing signal to the format converter.

Therefore, the lighting control apparatus of the present invention can use the power line without the need for a separate cable can simultaneously control a plurality of large-scale lighting equipment sets at the same time, and the maintenance cost of the lighting equipment set is easy to maintain the lighting equipment sets by bidirectional communication This provides a savings effect.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 3 to 5.

3 is a schematic diagram of a DMX512-based lighting control apparatus using power line communication according to an embodiment of the present invention.

The lighting control apparatus of FIG. 3 will be described as an example using the DMX512 protocol. The apparatus of FIG. 3 includes a first lighting module controller and an nth lighting module controller 510, 520, 530 for transmitting and receiving a DMX512 signal with a format converter 400 and a format converter 400 connected to an Ethernet-based PC 300. And first to nth lighting modules 610, 620, and 630 corresponding to each lighting module controller and controlled by power lines through the format converter 400.

The format converter 400 receives an AC power source (an external power source of 100 to 230 volts) and performs data conversion for transmitting and receiving data for controlling lighting devices connected to a power line. Here, the first to nth lighting modules 610, 620, and 630 each have lighting devices having addresses assigned to 512 channels controlled by the DMX 512 protocol, and each lighting device has a one-to-one corresponding slave. Controlled by the data received through. That is, the first lighting module 610 has 512 slaves of the first slave 611 to the 512 slave 613, each of the first lighting device 612 to 512 lighting equipment to be controlled ( 614 is connected.

One lighting module includes 512 slaves and one-to-one corresponding lighting devices, and the plurality of lighting modules 610, 620, and 630 may be controlled through a format converter 400 connected to a power line through a power line. That is, the format converter 400 and the plurality of lighting modules 610, 620, and 630 having 512 lighting units are connected to each other in a state capable of transmitting and receiving data by Ethernet protocol.

The apparatus of FIG. 3 uses a power line modem technology using a power line. The power line modem uses an Ethernet protocol, which is a wire format and a signal for forming a network of devices connected to each other along with a frame format protocol for data transmission over a network. Computer networking technology can be used for local area networks that define requirements.

Devices connected to such a network, that is, luminaires, have unique addresses, and data for devices that can be called by one or more addresses in the network is defined in packets.

Every Ethernet packet contains a header containing a destination address indicating where the packet should go, a source address indicating where the packet is coming from, and a payload containing some data for lighting control.

For example, in FIG. 3, the first lighting module controller 510 generates a DMX packet generated by the DMX512 protocol, converts data through the format converter 400, and transfers the data to the first lighting module 610 through a power line. Here, data is converted by the first slave 611 of the first lighting module 610 to control the first lighting device 612. This lighting control process will be described in more detail with reference to the detailed block diagrams of FIGS. 4 and 5 below.

4 is a detailed block diagram of a format converter of the apparatus of FIG.

Referring to FIG. 4, the format converter 400 receives a DMX512 data receiver 410 that receives a DMX512 signal for controlling a lighting device of the first lighting module 610 from the first lighting module controller 510 and the received DMX512. A first data conversion unit 420 for converting a signal in accordance with an Ethernet protocol so that the signal can be transmitted through a power line, a power line modem unit 440 for transmitting the converted transmission data through a power line, and a power supply unit 450 for supplying power to the power line And a host interface 430 for interfacing with the PC 300.

In FIG. 4, the DMX512 data receiver 410 receives a DMX512 signal from the first lighting module controller 510. The DMX512 signal is packet data generated by the first lighting module controller 510 using the DMX512 protocol to generate a control signal for controlling the first lighting device 612 among the 512 lighting devices of the first lighting module 610. . The DMX512 data receiver 410 outputs the received DMX512 signal to the first data converter 420. The first data conversion unit 420 converts the DMX512 signal in accordance with the Ethernet protocol so as to be transmitted by power line communication, and outputs the converted DMX512 signal to the power line modem unit 440. The power line modem unit 440 transmits the transmission data to the first lighting module 610 through the power line.

In this case, since the transmission data is an Ethernet packet based on the Ethernet protocol, the transmission data has not only a header and a payload, but also the header information includes an address assigned to the lighting device. Therefore, the source address of the first lighting module controller 510 and the destination address of the first lighting module 610 including the first lighting device 612 are inserted into the header information of the Ethernet packet.

Similarly, power line communication using the Ethernet packet reads the header information of a plurality of lighting modules and corresponding lighting module control periods, and checks the source and destination addresses to mutually transmit and receive data.

In this way, the Ethernet packet data transmitted from the format converter 400 is received by the first slave 611 of the first lighting module 610 through the power line. Here, since the illumination control signal from the first lighting module controller 510 is a control signal for the first lighting device 612, it is received by the first slave 611.

Hereinafter, a control process of the first lighting device 612 included in the Ethernet packet data received through the power line will be described in detail with reference to FIG. 5.

Figure 5 is a detailed block diagram of the first slave of the apparatus of Figure 3;

Referring to FIG. 5, the power supply unit 451 for supplying power to the lighting devices and the current sensor 460 for sensing the power supply amount supplied to each lighting device and the sensing signal sensed by the current sensor 460 are received. The power line modem unit 441 receiving the Ethernet packet data input through the current sensor controller 470 and the power line and the second data converter 421 converting the received Ethernet packet data into a DMX512 signal of the DMX512 protocol for lighting control. ) And a DMX512 data transmitter 411 for outputting the DMX signal to the first lighting device 612.

Through the above-described process, the illumination control signal of the first lighting module controller 510 is transmitted to the first slave 611 via the format converter 400 to control the first lighting device 612.

4 and 5, the opposite case of transmitting the state of the first lighting device 612 to the format converter 400 will be described.

The current sensor 460 senses the power supply amount of the power supply unit 451 supplied to each lighting device. The power supply amount is output to the current sensor control unit 470, and the current sensor control unit 470 outputs the abnormal sensing signal of the current supply amount of the first lighting device 612 to the second data conversion unit 421.

Then, the second data conversion unit 421 performs data conversion and outputs the abnormal operation state of the first lighting device 612 to the format converter 400 through the power line and outputs the power line modem unit 441. The power line modem unit 441 transmits an abnormal operation state of the first lighting device 612 to the format converter 400 through the power line. The format converter 400 receives the operation state of the first lighting device 612 from the power line modem unit 440 and outputs it to the PC 300 through the host interface 430.

Accordingly, the first lighting module controller 510 which can detect an abnormal operation state of the first lighting device 612 and is connected to the PC 300 according to the result, illuminates for controlling the lighting of the first lighting device 612. The control signal may be transmitted to the first lighting module 610 through the power line.

Therefore, using the format converter 400, the lighting control signal of the first lighting module controller 510 is transmitted to the first lighting device 612 through the power line, and the operation state of the first lighting device 612 is changed to the power line. Received through the light control accordingly.

In the above embodiment, the lighting control data is transmitted and received in the form of Ethernet packet data by the Ethernet protocol through power line communication, but it is obvious that other protocols capable of power line communication are possible.

In addition, in the above-described embodiment, the first lighting module to the nth lighting module 610, 620, and 630 corresponding to the first lighting module controller to the nth lighting module controller 510, 520, and 530 and controlled by a power line are used. As an example, it is possible to control the case by one-to-one correspondence. That is, it is possible to control the lighting device and the lighting module in all cases, such that one lighting module controller controls more than one lighting module, directly controls a lighting device other than the lighting module, or simultaneously controls the lighting device and the lighting module. Do.

In addition, in the above-described embodiment, the current sensor is configured to be included inside the slave, but a configuration including a current sensor in a separate configuration outside the slave is also possible, and the type of the sensor is also a temperature sensor, a light sensor, an impact sensor, or the like. Can be configured in various ways.

1 is a waveform diagram illustrating a DMX512 protocol;

2 is a configuration diagram of a conventional wireless DMX512 lighting control system;

3 is a schematic diagram of a DMX512-based lighting control apparatus using power line communication according to an embodiment of the present invention;

4 is a detailed block diagram of a format converter of the apparatus of FIG.

5 is a detailed block diagram of the first slave of the device of FIG. 3;

* Explanation of symbols for main parts of the drawings

300: PC 400: Format Converter

510, 520, 530: first to nth lighting module controller

610, 620, 630: first to nth lighting module

Claims (7)

In the lighting control device based on the DMX512 protocol, A plurality of lighting module controllers; A plurality of lighting modules corresponding to the plurality of lighting module controllers; And It includes a format converter for converting the format of the data to enable data transmission and reception through power line communication between the lighting module controller and the lighting module, The lighting module A slave which controls the lighting device by converting data received from the format converter in response to the control target lighting device and the lighting device to which the channel based on the DMX512 protocol is assigned, and transmits an operation state of the lighting device to the format converter. Lighting control device based on DMX512 using power line communication, comprising: a. The method of claim 1, The lighting module controller DMX512-based lighting control apparatus using power line communication, characterized in that for outputting the DMX512 signal based on the DMX512 protocol. The method of claim 2, The format converter A DMX512 data receiver receiving a DMX512 signal for controlling a lighting device of the lighting module from the lighting module controller; A first data converter configured to convert the received DMX512 signal to be transmitable through a power line; And DMX512 based lighting control apparatus using power line communication, characterized in that it comprises a power line modem unit for transmitting the converted transmission data through a power line. The method of claim 3, wherein The apparatus further comprises a computing device for outputting the operating state of the lighting equipment DMX512-based lighting control apparatus using power line communication. The method of claim 4, wherein The format converter DMX512-based lighting control device using power line communication, characterized in that it further comprises a host interface for interfacing with the computing device. The method of claim 2, The slave A sensor for sensing an operating state of the lighting device; A sensor controller which controls to receive and transmit a sensing signal sensed by the sensor; A power line modem unit for receiving packet data through the power line and transmitting the sensing signal; A second data converting unit converting the received packet data into a DMX512 signal of a DMX512 protocol for lighting control; And DMX512-based lighting control device using a power line communication, characterized in that it comprises a DMX512 data transmitter for outputting the DMX signal to the lighting device.        The method of claim 1,        The lighting module A sensor for sensing an operating state of the lighting device; And And a sensor control unit configured to receive the sensing signal sensed by the sensor and transmit the sensing signal to a format converter.

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