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Smart Artificial Sky

Intelligent Artificial Sky System

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Smart Artificial Sky

In the research of building energy conservation, fully utilizing natural lighting and appropriate shading are one of the most important means of energy-saving technology. In nature
In practical research on daylighting and shading, a stable experimental environment is needed, but due to the uncontrollability of the natural environment, people currently prefer
We need to use artificial simulation of the sky to create this condition. By placing a scaled down building model under an artificial dome
Conduct sunshine testing and inspection on the architectural design plan. Traditional artificial domes generally have forms such as direct projection of light onto the inner surface for diffusion, and mirror shaped rooms
Forms such as formula, internal light transmission and diffusion. The first two have low cost, but the structure cannot be made too large and is not easy to debug.
This system is in the form of internal light transmission diffusion, using the latest intelligent control technology and adding a solar simulation lamp, which can not only simulate the standard CIE

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    Product Introduction
    Features
    Application
    Technical specifications

    Product introduction

    A new generation of intelligent artificial sky with independent adjustable brightness and color temperature LED background light source
    The main structure of the sky dome adopts a latitude and longitude arrangement, significantly improving the uniformity of sky brightness, and is equipped with an intelligent sunlight simulation system

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    Features

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    The main structure of the latitude and longitude layout, with a more uniform arrangement of background light sources

    The main structure of JTG-S3 intelligent artificial dome adopts a modular and detachable form, realizing the installation of large diameter and large span. The overall structure adopts a steel frame, which is upgraded to a latitude and longitude design structure based on the previous generation product hexagon, increasing the uniformity and controllability of the arrangement of diffuse light sources. For the convenience of experiments, the main structure has a 2-meter-wide and 2-meter-high entrance and exit. JTG-S3 adopts a parallel spacing and equal angle design to make the layout of background light sources more uniform,

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    Fully customized dual color temperature LED light source

    The Tianqiong background light source is composed of 500 fully customized dual color LED background light sources. The light source can not only adjust the color temperature (2700K~6500K), but also adjust the brightness (0nit~500nit). Each LED light source is set with an independent address, which means that users can adjust the color temperature and brightness of each LED light source separately. Therefore, a user-defined sky brightness model is realized, and different brightness models can be independently edited according to the different needs of the experimental scene. The JTG-S3 control program has integrated 15 CIE sky brightness models, and users can choose different brightness models through software.

    Independent and controllable LED light group, realizing multiple sky brightness models as a reality

    The control software has built-in models for calculating sky brightness at different geographical locations and times. Users only need to input latitude, longitude, and time, and the software will automatically simulate the sky brightness at that time (without considering cloud cover) and the solar altitude and azimuth at that time.

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    with standards:
    ISO15469-2004，CIE S 011/E，BT/T 20148-2006

    By using a point based brightness meter and a cylindrical brightness meter, the brightness of different areas of the sky and individual LED light sources can be adjusted to ensure that the sky model fully meets the CIE standard. Each LED light source can be individually adjusted for brightness through software, and up to 15 sky models have been pre-set for users to directly choose from.

    Enter the location and time in the software, and the solar simulation light will automatically simulate the solar altitude and azimuth at each time.
    It can simulate the altitude and azimuth of the sun at any time and any location. The solar simulation lamp uses a reflector to increase the parallelism and illumination area of the simulated light source. The simulated light source is automatically located through software, and latitude, longitude, and time can be directly input into the software. The solar simulation lamp will automatically run to the simulated solar position at that position and time. The simulated light source is attached to a transmission box with a built-in control motor, and a precise positioning motor is used in conjunction with a micro gearbox transmission mechanism to achieve accurate transmission of elevation and azimuth angles. The Sunshine Simulation System (JTG-S4) can be sold as a standalone device or as part of the JTG-S3 Phase I project, and can be expanded into a complete JTG-S3 Skydome system in the future.

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    Technical Parameters

    Sky Model

    Built-in 15 CIE sky scale models, user-defined sky models

    Dome structure

    Maximum diameter: 5000mm, overall height: 3359mm (JTG-S3-4M maximum diameter 4000mm, overall height 2600mm)

    Background light

    489 LED light sources, evenly arranged in longitude and latitude (7° equiangular) (JTG-S3-4M has 279 background light sources)

    Platform height

    600mm, 360° rotatable, lockable at any angle

    Illuminance probe

    Diameter 30mm, height 23mm. Illumination accuracy less than 4%; illumination range 0-100KLux

    Illuminance collection

    Wireless multi-channel illumination acquisition system

    Platform illumination

    The illumination value of the operating platform is greater than or equal to 6000Lux, and the illumination fluctuation is <1%

    Sun simulation

    Simulate solar altitude angle and azimuth angle, resolution: 0.01°

    Overall power

    <11KW (JTG-S3-4M total power is about 7kW)

    Overall weight

    <3000 kg (including JTG-S4 intelligent sunshine simulation system)

    Color temperature adjustment

    2700K—6500K

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