Lecture hall lighting solutions

Project Overview

Now we take a state-owned enterprise lecture hall in Sichuan as a lighting project case. The stage of the lecture hall is 16 meters wide, 5.5 meters deep, and 6.2 meters high. The stage lighting design of the lecture hall is configured according to the function of conference as the main performance and supplementary performance. At the same time, it takes into account the needs of small and medium-sized performance functions. It is required to be able to adapt to the application and management of domestic and foreign lighting designers and lighting operators. The design focus should be to consider that the lighting system is fully reserved, flexible, easy to switch, safe and reliable, and has a variety of stage performance lighting configurations; in order to meet the above functions, the design configuration requirements of the lecture hall stage lighting system must be:
1. The stage lighting system of the lecture hall is advanced and practical, and the main equipment is selected from well-known domestic brands;

2. The stage lighting circuit design of the lecture hall fully considers the number of circuits to meet the flexible requirements for stage lighting for different performances;

3. The stage lighting system of the lecture hall has sufficient room for expansion and ensures safe operation;

4. The design of the stage lighting system in the lecture hall fully meets the requirements of modern performance management.

The entire lecture hall lighting system equipment is mainly based on Jiechuang lighting products. It is mainly equipped with 350 three-in-one light lamps, 72 par lights, full-color par lights, three primary color surface lights, 200w focusing cob surface lights, Led200w imaging light, King Kong 1024 lighting console, signal amplifier, stage double fog machine and other equipment, in certain quantities.

Lecture Hall Lighting Design Analysis and Instructions

1. Design basis

JG/J57-2000/J67-2001 “Code for Architectural Design of Lecture Hall”

GB/T50314-2000 “Intelligent Building Design Standards”

JG/JT16-92 “Building Electrical Design Code”

WH/0204-1999 “Testing and Evaluation of Optical Quality of Stage Lighting”

GB/7000.14-2000 “Safety Requirements for Ventilated Lamps”

GB/T50311-2000 “Design Code for Integrated Wiring Engineering of Buildings and Building Groups”

GB/T50312-2000 “Code for Acceptance of Integrated Wiring System Engineering for Buildings and Building Groups”

GB/50259-96 “Code for Construction and Acceptance of Electrical Lighting Devices in Electrical Installation Engineering”

GB/50169-92 “Code for Construction Quality Acceptance of Grounding Devices in Electrical Installation Projects”

GB/J54-83 “Low-voltage power distribution device and circuit design specifications”

GB/50052-95 “Design Code for Power Supply and Distribution System”

G/B50054-95 “Low Voltage Distribution Design Code”

GB/50034-2004 “Architectural Lighting Design Standards”

JG/JT16-92 “Building Electrical Design Code”

GB/15734-1995 “Radio disturbance characteristics limits and measurement methods of electronic dimming equipment”

2. Design principles

The stage lighting system of the lecture hall strictly follows the design ideas of reliability, high quality, advanced, flexible and comprehensive. When designing the system, the main equipment uses domestic advanced products. The overall plan makes full use of the latest research results and design concepts, and follows the following design principles:

1. The advanced, scientific and economical nature of the system

The setting of the stage lighting system of the lecture hall is: advanced technology, scientific system, stable and reliable, powerful function, easy to use and easy to maintain.

1.1. Advancedness

In the design of the stage lighting system, the needs for the continuous development and upgrading of lighting technology in the future and the scalability and compatibility of the system were fully considered, so as to meet the future needs due to reasons such as the increase in the scale of the performance without adding hardware as much as possible. lighting expansion and technology upgrade. Advanced technology adopted: computer console with powerful control, editing and expansion functions; intelligent dimming silicon box that is stable, reliable and highly anti-interference; domestically renowned professional stage conventional lamps and intelligent effect lamps;

1.2. Scientificity

The lighting control system of the lecture hall is designed using standard DMX512 signals and scientifically sends the control signals directly to each controlled point, making the stage lighting system have good development potential and openness to adapt to high-speed and effective signal transmission and system The need for expansion and constant technological upgrading. The entire lighting system is not only technologically advanced, but also systematic and scientific.

1.3. Economy

In the design, operation management and operating cost factors are penetrated into every design link. We use technologically advanced, energy-saving and environmentally friendly system equipment, especially a large number of low-power LED professional stage lights, tri-color fluorescent tubes and long-life tungsten halogen light source lamps, which are characterized by high efficiency and low energy, high brightness, low temperature and long life. At the same time, a modern hardware platform is built for stage management to achieve efficient and low-cost operation goals.

2. System integrity and practicality

The stage lighting process design completely breaks through the traditional design ideas, and combines and absorbs the changing forms and characteristics of the three-dimensional demonstration space developed by modern lighting art. The lighting system design forms a unified and complete solution both in terms of plane layout and three-dimensional structure. , so as to adapt to various types of lighting design plans, and leave a large number of complete design interfaces. These designed interfaces do not affect the progress and expansion of the overall design plan, but are mainly aimed at several future stage lighting system design challenges during use. question:

A. The problem of continuous updating of lighting system equipment; (i.e., space and depth issues of sustainable development)

B. To meet the constant needs of various performance forms; (i.e. limitations of plane layout and three-dimensional space)

C. Integrity is fully reflected in the realization of lighting system functions, the configuration of lighting equipment, the interconnection of different equipment, and the compatibility of signal transmission formats.

3. System scalability and sustainable development

The networked lighting system designed in the plan is an open platform, and the structure of the system fully takes into account the sustainable upgrade and development of future hardware and software. The entire lighting system design, equipment configuration, performance meets standards and ensures that the system has multiple safety, stability, and reliable system safeguards; as well as future system upgrade requirements.

4. Safety and reliability

As the control center of the lighting system, the lighting console’s own stability and the reliability of the dimming control system will directly affect the normal operation and performance of the entire system. Therefore, configuring stable and reliable dimming equipment is a prerequisite that must be considered. The system will be equipped with DMX input/output interfaces to be compatible with the access of new and old equipment such as lighting consoles and power pass-through boxes of all brands. All input and output (I�) interfaces of the dimming console have photoelectric isolation protection functions. All circuit boards of the lighting console and power pass-through box are produced using surface welding technology. Various signal interfaces adopt high-quality products and have hot-swappable functions.

5. Universality of equipment

The lecture hall lighting control system is compatible with the control signal: DMX512, ensuring a universal digital lighting console in the world.

3. Implementation instructions

An advanced and reasonable lecture hall lighting system configuration, equipped with lamps and equipment with the highest level of modern technology, is a prerequisite to ensure that the overall design goals of the stage lighting system can be achieved. The reasonable configuration of lamps and lamp positions is an important symbol that fully reflects the level of lighting design. The stage lighting positions are arranged in an all-round three-dimensional distribution. Surface light, side light, top light, backlight, chasing light and other areas form an all-round lighting array. There are light distribution points in each part of the stage to eliminate dead zones and can be flexible and changeable. Mix as needed.

1. Surface light design configuration

Surface light is the main light on the front of the stage. It is mainly used to illuminate the front area of the stage. It plays a role in front lighting for the leaders or performers on the stage. It is used for character modeling or to make objects on the stage present a three-dimensional effect. In the design plan, the lighting should be arranged according to the light projection distance to ensure that the surface light projection effect is achieved, the light spot is uniform, and the illumination is consistent.

2. Top light and backlight design configuration

The top light is set above the stage, and the lamps are hung under the light pole. Its function is to provide necessary lighting for the deep performance space of the stage. The top light includes forward light and backlight, which can be overlapped on the same light pole. The lamps can be arranged according to the The show requires configuration. The first top light is connected with the surface light to illuminate the main stage area. When connecting, pay attention to the height of the characters; the second to the last light can be projected directly behind the stage according to functional needs, can also be projected vertically downward, or can be used as backlight Project forward; thereby enhancing the lighting of the stage characters and scenery space. The front and rear lights are connected to achieve relatively uniform color and brightness in the stage performance area.

3. Side light design configuration

The function of side light is to create a sense of direction of the light source from the side of the stage, creating a sense of hierarchy and three-dimensionality for the leaders or actors on the stage. It can be used as auxiliary lighting to illuminate the characters’ faces, and can also enhance the level of the scenery and render the characters and stage space environment. Factors such as the angle, direction, distance of the light, type of lamp, power, etc. will all cause various side lighting effects. The shooting distance of the side light is from near to far, and the light projection angle is from near to far. There are many changes. The modeling light from one side or both sides can emphasize and highlight the outline of the side, which is suitable for expressing reliefs, figures and other volumetric objects. Effect. Unilateral light can show a strong contrast between yin and yang. Bilateral light can express splint light with personalized characteristics, but the light ratio of the front auxiliary light and the side light needs to be adjusted to obtain a more complete modeling effect.

4. Sky lighting design and configuration

Sky row lights are diffused projection lamps that project light and color onto the upper part of the stage canopy from top to bottom. Rows of lamps are evenly placed in front of the stage canopy to project the canopy to express the horizon, horizontal lines, Sunset, etc.; usually used in conjunction with floor lamps to make the color changes richer, and the lamps are used in combination with single lamps.

5. Ground lighting configuration instructions

Contrary to the sky row lights, the floor row lights are diffused projection lamps that project light and render colors to the lower part of the stage canopy from bottom to top. They are usually used in conjunction with the sky row lights to make the color changes richer. Use single lamp combination.

6. Follow spotlight design and configuration

Lamps designed based on the principles of optical imaging and zoom have functions such as changing the size, color, light and shade, virtual reality, etc. of the aperture. During the performance, they are installed on a special bracket to follow the movement of the actors and at the same time enhance the lighting brightness to increase the audience’s attention. It can be installed in various locations in the performance theater space to achieve partial lighting effects on the actor’s half body, whole body, long distance and small range. Sometimes, light chasing can also be used to express abstract and illusory stage plots.

7. Other effect design configurations

In order to better express the performance effect and simulate real scenes in nature, effect equipment such as stage double fog machines, strobe lights, and bubble machines were also installed on the stage.