It automatically tracks the sun.
The solar tracking system has two operating modes: sun sensor mode and calculation mode, which switch automatically. In sun sensor mode, a sun sensor equipped with a four-segment silicon photodiode captures the position of the sun in real-time with high accuracy. In calculation mode, when the output from the sun sensor cannot be obtained due to overcast conditions, automatic tracking is performed based on solar trajectory calculations by the CPU. The threshold for switching based on solar radiation intensity is calculated based on solar altitude (air mass) and latitude, ensuring appropriate switching at all times. The difference between the solar tracking position in calculation mode and the solar tracking position in sun sensor mode is learned in real-time. If the sun sensor captures the sun within ±15 degrees of the calculated position, the tracking learning function is activated, allowing for more precise solar tracking.
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basic information
This device automatically tracks the sun to ensure that direct sunlight from the sun is always facing directly, for instruments such as direct solar radiation sensors mounted on it. It has a mechanical tracking mode based on calculations and a tracking mode using a four-segment light sensor (sun sensor), automatically switching to sensor tracking in clear weather and to mechanical tracking in cloudy weather. Additionally, it learns in real-time the difference between the tracking position based on calculations and the tracking position based on the sun sensor (tracking learning function), and simplifies the north-south adjustment during installation by expanding the tracking range of the sun sensor (±15°). Furthermore, by making the threshold for switching from sun sensor tracking to mechanical tracking variable based on the solar altitude angle, it will not mistakenly recognize surrounding clouds as a pseudo-sun even when they are brighter than the sun. This device can be equipped with sensors such as direct solar radiation sensors and sun photometers.
Price information
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Delivery Time
P4
Applications/Examples of results
In STR-21/STR-22, like the conventional models, the solar tracking accuracy is extremely high, and installation is easy. Furthermore, improvements in durability and cost reduction have been achieved, making it a solar tracking device that can be used anywhere on the ground. The sun sensor, which captures the sun's position in real-time, has a field of view of ±15 degrees (total angle of 30 degrees), and if the sun is within this range, the sun tracker automatically follows the correct sun position in sun sensor mode. Therefore, precise orientation adjustment is not required during installation; it is sufficient to install it within the angle range of ±15 degrees (total angle of 30 degrees) of the sun sensor's field of view. However, horizontal adjustment must be correctly made using a level. The power supply voltage is compatible with 85-264VAC, 50/60Hz. By inputting latitude, longitude, and time, it can be used anywhere in the world, including polar and equatorial regions.
Company information
Eihon Seiki has always built its 90-year history with a spirit of "proactive innovation." Today, as a company supporting research institutions around the world, it is globally expanding its business with the themes of "environment and new energy" and "material property analysis."