en:aws
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en:aws [2014/08/18 18:04] – [Automatic weather station AWS01B] fluktuacia | en:aws [2014/08/18 19:26] – [Reading of measured values] fluktuacia | ||
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====== Automatic weather station AWS01B ====== | ====== Automatic weather station AWS01B ====== | ||
- | An autonomous weather station with its own auto-diagnostics. The station is designed to work in remote areas together with other scientific instruments like robotic telescopes or[[cs: | + | An autonomous weather station with its own auto-diagnostics. The station is designed to work in remote areas together with other scientific instruments like robotic telescopes or[[cs: |
Very common problems of such applications are scarce energy resources and a need for short-term data transmission occurring after long time intervals. As a result, a possibility of immediate failure report via short-band data channel is essential in order to minimize dropouts in data acquisition. | Very common problems of such applications are scarce energy resources and a need for short-term data transmission occurring after long time intervals. As a result, a possibility of immediate failure report via short-band data channel is essential in order to minimize dropouts in data acquisition. | ||
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* Freezing | * Freezing | ||
* Limit to the mximum measured wind speed | * Limit to the mximum measured wind speed | ||
- | * (([[http:// | + | * Seizing up (([[http:// |
- | Solvable by using other technologies | + | Solvable by using other anemometer designs |
==== Wind direction ==== | ==== Wind direction ==== | ||
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{{: | {{: | ||
- | Weather vane with wind rose serves as the most basic detector. The position of the vane is read by a reed switch and it is recorded when changes. | + | Weather vane with wind rose serves as the most basic wind detector. The position of the vane is read by a reed switch and it is recorded when it changes. |
=== Common difficulties === | === Common difficulties === | ||
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- | Can be solved by using more sophisticated anemometer that measures vector | + | Can be solved by using more sophisticated anemometer |
==== Precipitation ==== | ==== Precipitation ==== | ||
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==== Snow precipitation ==== | ==== Snow precipitation ==== | ||
- | According to demands | + | According to requirements |
=== Height === | === Height === | ||
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==== Humidity ==== | ==== Humidity ==== | ||
- | Humidity sensors are positioned | + | Humidity sensors are located |
[[cs: | [[cs: | ||
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==== Temperature ==== | ==== Temperature ==== | ||
- | Measuring the temperature of air, although being one of the most important function of the station, is in some cases performed incorrectly - e.g. by letting the Sun influence the value. A solution to this problem is so-called radiation shield, which prevents the effect of radiation on the sensor. | + | Measuring the temperature of the air, although being one of the most important function of the station, is in some cases performed incorrectly - e.g. by letting the Sun influence the value. A solution to this problem is so-called radiation shield, which prevents the effect of radiation on the sensor. |
- | Apart from commonly used [[cs: | + | Apart from commonly used [[cs: |
==== Pressure ==== | ==== Pressure ==== | ||
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=== Luminous flux === | === Luminous flux === | ||
- | Use of photovoltaic cell, measuring output in W/ | + | Use of a photovoltaic cell, measuring output in W/ |
=== UV index === | === UV index === | ||
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==== Chemical sensors ==== | ==== Chemical sensors ==== | ||
- | * Gas detection CO, CO2, N2... H2S, CH4.. [[http:// | + | * Gas detection CO, CO2, N2... H2S, CH4.. [[http:// |
* PH-meter | * PH-meter | ||
===== Communication interface ===== | ===== Communication interface ===== | ||
- | The weather station has several possibilities | + | The weather station has several possibilities |
==== RS232/RS485 ==== | ==== RS232/RS485 ==== | ||
- | Modules | + | Modules |
==== Ethernet ==== | ==== Ethernet ==== | ||
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=== I²C master === | === I²C master === | ||
- | In this case, the entire device acts as [[cs: | + | In this case, the entire device acts as [[cs: |
=== Emulated COM port === | === Emulated COM port === | ||
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- | ===== Reading of measured values ===== | + | ===== Reading of the measured values ===== |
This design offers a possibility of connecting variety of sensors, which are initialised at every station startup. It uses [[cs: | This design offers a possibility of connecting variety of sensors, which are initialised at every station startup. It uses [[cs: |
en/aws.txt · Last modified: 2015/03/05 22:49 (external edit)