The stage lighting system design is configured according to the rules of stage art performance and special use requirements. The purpose is to design and configure the lighting process equipment required for various performance art reproduction processes according to system engineering, so that the stage lighting system is accurate and complete. The land serves the art exhibition.

       Stage lighting design principles and settings

       First, the principle of stage lighting design

1. Create a complete stage free space for lighting, adapt to all lighting requirements; 2. In order to enable the system to continue to operate, properly increase reserves and expand space; 3. System's anti-interference ability and safety as an important design indicator; 4. High-efficiency energy-saving cold light new lamps are introduced into the system design; 5. DMX512 digital signal network technology is introduced into all aspects of system design.

       Second, the stage lighting system process design requirements

1. The system process design and equipment configuration have the functions of a comprehensive theater, and can rotate a variety of different types of lighting operation schemes in a short time.

2. The system is designed to quickly switch from one lighting solution to another, with a conversion time of 2 hours.

 3. This system allows the use of all types of luminaires and other complementary equipment in all configurations.

 4. The system is designed with sufficient safety and storage capacity. The entire system performs continuous diagnostic checks on the main console without interrupting the main power supply.

5. The equipment in the system fully meets the technical requirements of the background noise of the stage. Under the empty field state, the noise of all lighting equipments and the interference of external environmental noise are not higher than NR25, and the noise of the 1M effect equipment of the test point is not more than 30dB.

6. The expansion capability of the system is intentionally reserved at the beginning of the system design, such as power silicon control capacity, network capacity, sufficient funds in the future or new technologies, so that the system will not be modified or updated due to insufficient design, saving Funding and the need to adapt quickly to change.

       Third, lighting electrical equipment cabinet settings

1. Structures, cabinets and racks of electrical equipment are made of metal and steel plates that are treated with anti-embroidering. If necessary, they are reinforced with steel or steel frame. Electrical equipment cabinets are protected against dust and moisture. All cabinets and racks are enclosed except for ventilation and cable entry and exit. The depth of each cabinet ensures proper equipment and wiring space. Each cabinet has the same depth, height, and color for each particular group. 2. Ventilation, all electrical components or devices can operate continuously within the enclosure used and in the specified environment. The cabinet is properly grounded. The heat generated by the dissipating device is protected by a fine mesh or foam barrier through the mouth to prevent debris from entering. The outer casing should be pressurized and sealed and the air intake should be leaky. 3. Cable entry and exit, cable holes are reserved at the factory at the required location; and removable panels are available for final processing on site. The cable entry and exit line takes into account the external warp of the cable, the laying method and the sufficient bending radius, and the cable fixing device. 4. The cabinet door and access panel, the door and panel are designed to be rigid enough, the doors and panels are removable for inspection, and the panel is fitted with a dust seal. All enclosures and panels are painted and dried after thorough removal of grease and rust. 5. Marking, the part mark in the equipment cabinet should also be a permanent mark, and the temporary mark or pen should not be used to identify the mark. The size of the nameplate and the logo is large enough to see the nameplate and logo in a distance of 2 meters under normal light.

       Fourth, the lighting system electrical cable and line laying settings

1. The output wires from the silicon cabinet to all the sockets are consistent by the length of the three wires and are output by twisting. The signal lines such as the light line and the sound and video are far away from each other, and must be crossed at 90° when they meet each other, leaving a distance of 0.5M; if it is unavoidable to be parallel, the spacing is set to be greater than 1M.

2. Five-core shielded cables are used for all signal connection cables to prevent interference.

3. There is a separate grounding trunk. The power cable and the light wire should be installed in the metal trunking. The metal trunking should be grounded.

4. The strength and weakness of the socket box are separated by metal partitions, which avoids the interference of strong electricity to weak electricity and ensures the safety of the weak current system.

5. It adopts low-smoke (LSF) and flame-retardant PVC-type copper core cable. The cable should be able to work in 90 °C environment for a long time. Under normal conditions of use, the service life should be more than 30 years.

 6. The socket box is selected from the international advanced products produced by the “national standard” enterprise. The strong and weak electricity in the plug-in box are separated by metal partitions to ensure safety and facilitate electromagnetic compatibility. 7. Cable trays use thermal cables for fire detection to prevent cable fires.

8. The bridge or wire trough is covered and fireproofed. The type, voltage, current carrying capacity, section, core number, and sheath of the power cable and control cable shall meet the requirements of the circuit type, transmission model, use environment and laying method, and comply with relevant regulations.

9. The control and power cables for moving parts are made of soft cables that meet fire protection requirements. The laying of the cable shall comply with the requirements of GB50258-96 "Code for construction inspection and acceptance of wiring installations for electrical installations of 1KV and below".

10. Electromagnetic interference should be minimized when laying cables. When a cable hose is used, its length cannot exceed 1 meter. Suspended or sagging soft cables for power or control lines shall be provided with a stress relief center core wire that shall be clamped at both ends to relieve wire stress.

11. The cores of multi-core and shielded cables used for power or control lines are easily identified by number. Cables with less than 25 cores use color codes and do not use cable routing patterns or sequences to identify the number of cable cores.

12. The cable numbers at the ends of each power and control cable are the same and are marked with a unique number. The cable number is indicated in the wiring diagram.

13. The wires should have sufficient length of cable to meet the overall travel requirements of the equipment, including the travel required to the service location. All cable entry devices have appropriate incoming connectors for cable replacement. The remaining cables should be wound on or placed in the cable tray and secured.

14. When the box is installed, it should be aligned perpendicular to the wall surface, the vertical deviation is not more than 2mm, and the inlet and outlet boxes are arranged neatly and with appropriate margin. The wires in the pipe with different loops, different voltages, and AC and DC wires shall not penetrate into the same pipe. The wires shall not have joints and twists in the pipe. The wires penetrate into the pipe. At the exit, a sheath is installed to protect the wires. Before laying the cable, carefully check the cable for mechanical damage and perform insulation shake test. The installation of power and lighting distribution boxes, the quality standards are in line with the national electrical engineering construction specifications. The floor power distribution box is firmly installed on the angle steel or channel steel, fixed by screws, and grounded. The pipe in and out of the line is about 10 cm above the base surface in the foundation. The installation position dimensions are shown in the paper requirements, and the installation of the access door is not carried out behind the wall. The floor-mounted power distribution box is installed with a verticality of 1.5 mm per meter and a disc indirect seam of 2 mm. The lighting box is generally installed on the wall. The project is installed in both light and dark. The concealed wall-mounted distribution box is installed directly in the wall when the wall is built, or it can be reserved on the wall and then reinstalled. Ensure that the installation is firm, the grounding is good, the installation is flat, positive and the dimensions meet the design requirements. The bottom margin is 1.5M from the ground, the vertical deviation of the lighting distribution box is not more than 3MM, and the pipelines entering and leaving the distribution box are allocated to the distribution box and used with the cap. Secure with lock nut. Install the distribution box, the surface of the cover is as flat as the stucco layer, and the pipelines entering and leaving the box are darkly applied.

       Fifth, the safety settings of the lighting system electrical equipment operation

1. Reasonable output, each dimming and straight-through output is output by a 32A socket, and each of the three wires has the same length and is output by twisting.

2. Good grounding, in order to eliminate thyristor interference, make audio and video equipment meet the requirements of use, and choose a reasonable and practical grounding system in the design of lighting system. The sound reinforcement system and the lighting system are provided with independent grounding trunks, using a common ground pole, and the grounding resistance is ≤1Ω. The power cable and the lamp wire are all installed in the metal wire trough, and the metal wire trough is provided with a good grounding device.

3. Electric shock protection, because most of the lighting distribution lines are connected to the stage lighting through the socket, according to the conventional practice of the low-voltage distribution system, the outlet circuit should be equipped with leakage protection for indirect contact protection, because the leakage switch is easy to malfunction, directly affecting the stage lighting system. Reliability, so we take the PE line and the relevant loop phase line together. In order to reduce the zero-sequence impedance, the protection device can operate reliably and ensure personal safety in the event of single-phase ground fault.

4. Lightning protection, lightning arrester installed in the low voltage busbar of the substation, and surge protector installed in the dimming light distribution cabinet to prevent overcurrent and overvoltage caused by electromagnetic induction and electrostatic induction when the stage of the Cultural Art Center or nearby buildings is struck by lightning Damage to the dimming cabinet and lighting control computer system to ensure the safety of the dimming silicon cabinet and the lighting control computing system. Sixth, stage lighting system design description The stage light and position of the stage lighting position constitute a light array, all parts of the stage have light points, to eliminate the dead zone, can be flexibly changed as needed.

(1) Top light system design and configuration The top light function is necessary to illuminate the performance space of the stage depth. The various lamps used in the top light configuration greatly improve the light transmittance of the light, and the light transmittance is higher than the current domestic mirror. It has been improved by 150%, and the design of the blackout leaf is beautiful and novel. The four-page setting is reasonable, and the shading effect is good. It can be used for stage lighting or dyeing. A. The layout of the luminaires is as follows: Above the stage, there are a total of 20 ceiling lights. Each of the top lights uses a different number of lamps: 24 sets of PD-JG1501KW threaded spotlights (with color changer), 40 sets of PD-JG1501KW plano-convex spotlights (with color changer), PD-P64 (with color changer) 40 sets, PH750-26 (750W) imaging spotlights 64 sets (with color changer) and (DJD) LD1000R film and television stage soft light 36 sets and color 熠 2KW computer moving head lights 16 sets. Arrangement and projection method of the luminaire: The first top light and the surface light are connected to the lighting main performance area, pay attention to the height of the character when connecting, and can be used as the fixed point light and the special effect light in the first top light position, and select some lights to strengthen the performance. The illumination of the fulcrum; the second to the tenth can be cast directly to the stage, or can be projected vertically downwards to enhance the lighting of the stage figures and the scene space. The front and rear ray are connected to each other, which makes the stage performance area get more uniform color and brightness.

(2) Design and configuration of computer lights Considering that intelligent lighting is an inevitable development trend of stage lighting in the 21st century, in order to meet the needs of various performance lighting, the stage lighting design is equipped with 16 computer moving head lights. The computer moving head light is mainly arranged on the top light pole above the stage. It is controlled by DMX signal and connected to the computer console through the network connection. The projection angle, brightness, transformation pattern, beam size and color of the lamp can be adjusted arbitrarily to ensure the performance is satisfied. Requirements for changing the head of the computer.

(3) Design of light color changer The color changer installed on some lamps is responsible for stage light, dyeing, color change, and setting off the plot to achieve colorful effects. Color changer configuration: 136 WD-512-08A series computer color changers are selected. Seven, stage lighting control equipment configuration

1. Lighting console lighting console uses the British "Strand" company 300 series 125 optical path computer dimming station, the quality assurance of this dimming station is GeniusPro operating software, this software supports the preset or tracking mode of the small and medium console operating. The computer light control is another standard feature of the Sparkle 300 series console, which is realized by the intelligent mouse tracking ball. 2. Dimming silicon cabinet The dimming silicon cabinet is selected by British "Strand" company CD80-A digital dimming silicon cabinet. The digital silicon cabinet is the carrier for high-power load dimming and the core hardware of the dimming system. The CD80-A silicon cabinet is a dimmer with digital decoding trigger control technology. Its DMX input interface uses photoelectric isolation technology, high-precision, high-speed digital trigger system (dimming range 1-100%, 10 dimming curves, dimming accuracy 1024). The anti-interference is strong, the debugging is simple, the system is not affected by the environment such as temperature and voltage. The system can meet the output voltage consistency index specified by the national standard one level without debugging, and does not need to perform the maintenance adjustment of the light exit point and consistency. The system adopts ISP online system programmable large-scale integrated circuit, and the hardware reliability is improved. The software adopts “watchdog” technology and fault-tolerant technology. Even if it is strongly interfered by the external power grid and transmission line, it can automatically detect the power distribution system. When the electric voltage wave is used, the trigger conduction angle can be automatically corrected to ensure normal operation. The silicon cabinet and the dimming station transmit signals by means of photoelectric isolation, which avoids the accident of burning the dimming table due to accidents such as electric leakage or static electricity. The silicon cabinet has the last function of dimming memory. Once the main and sub-controls are faulty, normal performance can be guaranteed. 9-stage preheating value can be set to extend the life of the lamp. The 10 dimming curves solidified in the machine can fully meet the needs of various performances. Two input connectors are available to receive both digital and analog console signals. Each power unit has a through switch, and each power unit can be interchanged under any circumstances, in order to ensure that the studio provides guarantees for live performances, shooting, and live broadcast requirements such as variety shows, as well as moving head lights, laser effects, Applications such as color changing lights and color changers provide ample compatibility and expansion.