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Weather Station |
| A wide range of weather data is collected by the system. Wind velocity and direction is passed to inputs on a UPI module. The wind direction encoder provides a 4 bit Gray-code signal having a resolution of 16 discrete positions. The resultant direction is calculated over a 2 second period, to compensate for sudden small changes. |
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| The wind velocity signal consists of a pulsed frequency of up to 300 Hz. Both the velocity and direction are processed and converted into metric values inside the module. This task is performed using a calculator program, a pulse processor and a lookup table. Other elements in the weather station include an outside light detector, a temperature and humidity sensor, a rain sensor and a rain gauge. |
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| The most recent weather data is stored in a PD5020 VGA controller, which then graphically displays weather data for the previous 24 hours. The data is also used for the climatic control of the building. |
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International P-NET User Organization
P.O. Box 192DK-8600 Silkeborg Denmark |
 Send us an e-mail |