KR100647092B1 - A system for controlling light using wireless dmx512 protocol - Google Patents

Abstract

A system for controlling a lighting device using a wireless DMX512 protocol is provided to accurately deliver DMX512 wireless data to respective lighting devices by converting DMX512 signals into wireless module signals. A main console(10) generates DMX512 packet data for controlling plural lighting devices. A DMX receiver(20) receives the DMX512 packet data from the main console. A transmission data converter(30) divides the DMX512 packet data into respective channels in synchronous with a synchronous signal, stores the divided data, and outputs positional data in real-time. A wireless transmitter(40) converts the data received at respective channels to wireless data and transmits the wireless data. The lighting devices are turned on/off based on the data received from the wireless transmitter. Each of the lighting devices includes a wireless receiver(50), a received data converter(60), and a manipulation controller(70).

Description

Lighting control system of wireless DMV512 method {A System For Controlling Light Using Wireless DMX512 Protocol}

1 is a waveform diagram illustrating a DMX512 protocol.

2 is a block diagram of a lighting control system of a wireless DMX512 method according to the present invention.

3 is a block diagram illustrating a detailed configuration of a transmission data converter of FIG. 2.

4 is a block diagram illustrating a detailed configuration of a reception data converter of FIG. 2.

FIG. 5 is a block diagram illustrating a detailed configuration of the operation control unit of FIG. 2.

6 is a waveform diagram for comparing data transmitted from the main console of the lighting control system of the wireless DMX512 method according to the present invention with data received from the wireless receiver.

<Description of the major reference numerals>

10: main console 20: DMX receiver

30: transmission data conversion section 31: data latch logic section

33: storage unit 35: control unit

37: synchronization check unit 40: wireless transmission unit

50: wireless receiving unit 60: receiving data conversion unit

61: position analysis unit 63: error correction unit

65: data analysis unit 67: control unit

70: operation control unit 71: axis controller

73: lighting on / off logic unit 75: D / A conversion unit

77: operation drive portion 78: motor portion

79: feedback logic section

The present invention relates to a lighting control system of a wireless DMX512 method, and more particularly, to a lighting control system that matches a DMX512 protocol and a wireless transmission protocol to control a plurality of lights wirelessly.

The DMX512 protocol was created in 1986 by the US Theater Technology Association (USITT) to control lighting console dimmers.It is a transmission protocol that can transmit information on up to 512 channels by transmitting data in the form of a data stream. 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 on 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, has one start bit (130a, start bit), eight bits of data bit (130b, data bit), and two bits of end bit (130c, stop bit). 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.

However, such a conventional lighting control method requires a wired line between the lighting device and the console that controls the connection, which is complicated and expensive, and in the event of a failure of one lighting device, a lot of time and money is required for repairing the lighting. The failure of the device has caused a problem that it is impossible to control other lighting equipment.

In order to improve this problem, attempts have been made to control the lighting apparatus wirelessly, but the RS-232C protocol currently used in the data transmission / reception unit when the wired and wireless network is connected is the special character, NULL, and break mark used in the DMX512 protocol. Due to the problem of incompatibility with the DMX512 protocol because there is no reception regulation for the DMX512 of the wireless control method has not been developed.

In addition, the development of hardware and software for accurately segmenting DMX512 data transmitted in real time (approximately 250KBPS) to each light by a wireless method has not been made.

Therefore, there is an increasing demand for a control device capable of overcoming an unreasonable problem of a lighting control system based on a conventional DMX512 method and analyzing / transmitting a DMX512 signal to a wireless module in real time.

The present invention has been made to solve the above problems, an object of the present invention is to provide a wireless DMX512 lighting control system capable of transmitting a DMX512 signal converted to a wireless module method.

Another object of the present invention is to provide a wireless DMX512 type lighting control system capable of accurately splitting and transmitting DMX512 data transmitted in real time from a main console to each lighting in a wireless manner.

According to an aspect of the present invention for achieving the above object, the main console for generating DMX512 packet data for controlling the on / off and position movement of a plurality of lighting fixtures, receiving the DMX512 packet data from the main console A DMX receiver, a transmission data converter for dividing the DMX512 packet data received by the DMX receiver for each channel according to a data synchronization signal, storing the same, and outputting the stored data for each position in real time, and each channel in the transmission data converter. And a plurality of lighting apparatuses, each of which is controlled to blink and position based on data received from the wireless transmitter and a wireless transmitter for converting data transmitted in real time and separated in real time into wireless data. Radio reception for receiving radio data transmitted from the radio transmitter A packet data for controlling the lighting device by analyzing the positions of the packet data received by the wireless receiver, and receiving from the received data converter and the received data converter for transmitting the extracted packet data to a corresponding channel; Provided is a wireless DMX512 type lighting control system including an operation control unit for performing on / off and position control of lighting based on the packet data for each channel.

Here, the transmission data converting unit analyzes an internal number of the DMX512 data received from the DMX receiving unit and generates a synchronizing signal for distinguishing command codes for each channel, and applies the synchronizing signal received from the synchronizing check unit. A data latch logic unit for dividing the DMX512 data received from the DMX receiver into packet data for each channel, a storage unit for sequentially storing packet data for each channel divided by the data latch logic unit, and a channel stored in the storage unit It is preferably configured to include a control unit for reading out the packet data to the real-time transmission to the wireless transmitter.

In addition, the received data conversion unit analyzes the position of the packet data received by the wireless receiver to extract only the packet data of the channel corresponding to the lighting device, the error in each packet data extracted from the position analyzer An error correction unit for correcting an error in a preset manner, a data analyzer extracting data bits from each packet data, and each of the components, and transmitting the data bits extracted from the data analyzer to the operation controller. It is preferable to include a control unit.

In addition, the operation control unit is an axis controller for controlling the position of the illumination by at least one axis unit, an illumination on / off logic unit for controlling the on / off of the illumination by receiving an illumination channel control signal from the axis controller, the axis When the position control signal for each axis is received from the controller, the operation driving unit for generating a motor driving control signal, the motor unit for moving the position of the lighting by operating in accordance with the motor driving control signal received from the operation driving unit and the illumination by the operation of the motor unit More preferably, the feedback logic unit detects and feeds back an error of the position.

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

2 is a block diagram of a lighting control system of a wireless DMX512 method according to the present invention. As shown in FIG. 2, the wireless DMX512 lighting control system according to the present invention includes a transmitter and a wireless receiver including a main console, a DMX receiver 20, a transmit data converter 30, and a wireless transmitter 40. 50, the reception side including the reception data conversion unit 60 and the operation control unit 70.

The main console is the part that generates DMX512 packet data to control on / off and position movement of each luminaire. The main console generates packet data using on / off and each axis (X, Y, Z, etc.) of each luminaire 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 and transmits the signal to the transmission data converter 30. The DMX receiving unit 20 transmits the received DMX512 signal to the data latch unit and the synchronization check unit 37 of the transmission data conversion unit 30 described later.

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. As a transmission, a detailed configuration will be described in detail with reference to FIG. 3.

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. In general, a WLAN module is used as the wireless transmitter 40. In the present invention, 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, and is compatible with other devices, and is particularly resistant to noise caused by noise caused by electromagnetic waves emitted from electronic devices in the 2.4 GHz band. The spectrum spread method was 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. A detailed configuration thereof will be described in detail with reference to FIG. 4.

The operation control unit 70 performs flickering and position control of the lighting apparatus based on the packet data received from the reception data conversion unit 60, which will be described in detail with reference to FIG. 5.

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

3 is a block diagram showing the detailed configuration of the transmission data conversion section 30 of FIG.

As shown in FIG. 3, the transmission data conversion unit 30 includes a data latch logic unit 31, a storage unit 33, a control unit 35, and a synchronization check unit 37.

The sync checker 37 analyzes an internal number of the DMX512 data received from the DMX receiver 20 to generate a sync signal for classifying a command code for each channel.

The data latch logic unit 31 divides the DMX512 data received from the DMX receiver 20 into packet data for each channel based on the synchronization signal received from the synchronization checker 37.

The storage unit 33 sequentially stores the packet data for each channel classified by the data latch logic unit 31, and the controller 35 sequentially reads the packet data for each channel stored in the storage unit 33 and wirelessly. The transmitter 40 transmits in real time.

Here, since the transmission speed of the data received by the transmission data conversion unit 30 is 250kbps, data reception and analysis should be performed in real time so that lighting control can be normally performed, so data reception, analysis, and transmission proceed simultaneously. In other words, while the data latch logic unit 31 stores one packet data in the storage unit 33 and then latches the next one packet data, the control unit 35 may store one packet data currently stored in the storage unit 33. The readout is transmitted to the wireless transmitter 40.

In FIG. 3, the transmission data converter 30 is implemented by hardware. However, the functions of the data latch logic unit 31, the synchronization check unit 37, and the controller 35 may be implemented in software. Of course it is possible.

4 is a block diagram showing a detailed configuration of the reception data converter 60 of FIG.

As shown in FIG. 4, the reception data converter 60 includes a position analyzer 61, an error corrector 63, a data analyzer 65, and a controller 67.

The position analyzer 61 analyzes the position of the packet data received by the wireless receiver 50 and extracts only packet data of channels corresponding to the lighting device.

If there is an error in each packet data extracted from the position analyzer 61, the error correction unit 63 corrects an error in a preset manner to prevent a malfunction of the lighting, and the data sub-section is a data without error or an error is corrected. The data bit, which is a data part for lighting control, is extracted from the packet data.

The control unit 67 controls the above components, and transmits the data bits extracted by the data analysis unit 65 to the operation control unit 70.

In FIG. 4, the reception data converter 60 has been described by way of hardware. However, it is obvious that the above components can be implemented in software.

5 is a block diagram showing a detailed configuration of the operation control unit 70 of FIG.

As shown in FIG. 5, the operation controller 70 includes an axis controller 71, an illumination on / off logic unit 73, a D / A conversion unit 75, an operation driver 77, and a motor unit 78. And a feedback logic unit 79.

The axis controller 71 is for controlling the position of the lighting in at least one axis unit. The axis controller 71 includes a plurality of axis controllers for implementing various operations, and each axis controller has one address in the DMX512. Therefore, one luminaire basically has one or more DMX512 addresses, and the number of the luminaires varies depending on the use and usage of the lighting. The axis controller 71 analyzes the received data bits to determine whether to turn on or off the illumination or to change the position of the illumination. The main console 10 determines the on / off of the light by the position control signal, and the axis controller 71 also analyzes the level of the position control signal for the light on / off and inputs a position value of a specific level or more. When a control signal for turning ON is input to a position value below a specific level, a control signal for turning off the lighting is output and transmitted to the lighting on / off logic unit 73.

The lighting on / off logic unit 73 is a logic part for controlling the on / off of the light by receiving an on / off control signal from the axis controller.

The D / A converter 75 is a part for converting the digital position control signal received from the axis controller 71 into an analog control signal for use in the case of using a DC motor as the lighting position control means. In this case, the D / A converter 75 is omitted.

The operation driver 77 generates a motor drive control signal when receiving the position control signal for each axis from the axis controller 71 or the D / A converter 75, and the motor unit 78 operates according to the motor drive control signal. To move the position of the light.

The feedback logic unit 79 detects and feeds back the error of the illumination position by the operation of the motor unit 78 to correct the error, and the position of the illumination is precisely controlled by the feedback control.

6 is a waveform diagram measured to compare data transmitted from the main console 10 and data received from the wireless receiver 50 of the lighting control system of the wireless DMX512 method according to the present invention.

In FIG. 6, the upper two waveforms are waveforms of data transmitted from the main console 10 and the wireless receiver 50, and the lower two waveforms are enlarged waveforms of the two waveforms.

As can be seen in Figure 6, according to the present invention it can be seen that the data transmitted from the main console 10 and the data received from the wireless receiver 50 is consistent.

DMX512 data transmitted from the main console 10 is composed of 1Bit Start + 8Bit Data + 2Bit Stop + Idle Gap, but when receiving it from the DMX receiver 20, the basic frame except 1dle Gap (1Bit Start + 8Bit Data + 2Bit) Receive only Stop) to maintain compatibility with all consoles. That is, depending on the type of console, Idle Gap may or may not exist, so timing may not be constant when Idle Gap exists, but the DMX receiver 20 receives only basic frames excluding Idle Gap. It is compatible with the console.

Therefore, the transmission data conversion unit 30 and the wireless transmission unit 40 receive only the DMX512 basic frame and convert it into wireless data, and the wireless reception unit 50 and the reception data conversion unit 60 only the basic frame except the idle gap. It receives and transmits to the lighting device.

According to the present invention as described above it can provide a wireless DMX512 lighting control system that can convert the DMX512 signal to a wireless module method and transmit.

In addition, it is possible to provide a wireless DMX512 lighting control system that can accurately divide and transmit DMX512 data transmitted in real time from the main console to each lighting in a wireless manner.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will cover such modifications and variations as fall within the spirit of the invention.

Claims (4)

A main console for generating DMX512 packet data for controlling on / off and position movement of a plurality of lighting fixtures; A DMX receiver configured to receive DMX512 packet data from the main console; A transmission data conversion unit for dividing the DMX 512 packet data received by the DMX receiver by each channel according to a data synchronization signal, storing the same, and outputting the stored data for each position in real time; A wireless transmitter for converting data transmitted in real time, which is classified for each channel in a transmission data converter, into radio data and transmitting it to the outside; And And a plurality of lighting apparatuses whose blinking and position are controlled based on the data received from the wireless transmitter, Each lighting device A wireless receiver for receiving wireless data transmitted from the wireless transmitter, the packet data received from the wireless receiver are analyzed to extract packet data for controlling the lighting device, and the extracted packet data is transmitted to a corresponding channel. A reception data converter; And And an operation control unit for performing lighting on / off and position control based on the packet data for each channel received from the reception data conversion unit. The method of claim 1, The transmission data conversion unit A sync checker configured to analyze an internal number of the DMX512 data received from the DMX receiver to generate a sync signal for classifying a command code for each channel; A data latch logic unit for dividing the DMX512 data received from the DMX receiver into packet data for each channel based on the synchronization signal received from the synchronization check unit; A storage unit for sequentially storing channel-specific packet data divided by the data latch logic unit; And And a controller configured to read packet data for each channel stored in the storage unit and transmit the packet data to the wireless transmitter in real time. The method of claim 1, The received data converter A location analyzer for analyzing only the location of the packet data received by the wireless receiver to extract packet data of channels corresponding to the lighting device; An error correction unit correcting an error in a preset manner when there is an error in each packet data extracted by the position analyzer; A data analyzer extracting data bits from the packet data; And And a control unit for controlling the respective components and transmitting the data bits extracted from the data analysis unit to the operation control unit. The method of claim 1, The operation control unit An axis controller for controlling the position of the illumination by at least one axis unit; An illumination on / off logic unit configured to receive an illumination channel control signal from the axis controller to control on / off of illumination; An operation driver for generating a motor driving control signal when receiving a position control signal for each axis from the axis controller; A motor unit which moves according to the motor driving control signal received from the operation driving unit to move the position of the lighting; And And a feedback logic unit for detecting and feeding back an error of an illumination position due to the operation of the motor unit.

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