During the download process the red LED is ON, and the display is disabled. Fortunately data is only erased by overwriting so multiple downloads of the same data is possible.
#DATA LOGGING ANEMOMETER SOFTWARE#
#DATA LOGGING ANEMOMETER FULL#
Logging continues until either all the eeprom are full or logging is turned OFF by the user. Each time this data is logged an orange LED flashes. ‘Log’ sends clock time and wind speed data to be saved on eeprom.It starts flashing at power ON and stops at power OFF. A green ‘Power On’ LED flashes each second and is most accurate as coming from the clock IC. ‘Display Only’ gives a wind speed reading that is updated at the end of each sample time.In operation there are 3 states of use as controlled by the main Logging switch. During sleep mode the display is also disabled though typically this would be switched off when not attended by the user.
Regular brief checks are made to assess if the wind has picked up during the sleep mode. To aid power conservation and extend logging duration, a very low power Sleep Mode is entered if wind speeds drop very low. This sample time influences the number of days data can be collected over. Sample time of the wind speed can be user set from 1 second up to the international standard sample time for small wind generators of 60 seconds. Data and display shows wind speed in either kph or m/s as user set. 3x 7 segment LED display gives a local display of wind speed.
#DATA LOGGING ANEMOMETER SERIAL#
It stores data in 8x serial eeprom, so holds 2Mb of data. The completed unit is based on the PicAXE 18x. To overcome these problems I felt a stand alone anemometer datalogger was needed. There is the power supply to be sorted if it were and besides, I need to use my laptop. However on more remote sites, I’m not inclined to leave my laptop unattended whilst it records data over many days. There is no problem when close to existing dwellings as the logging laptop can be safe and powered from inside the house. I have an anemometer that can log wind speeds direct to a computer. With a known general variation, the years of weather station records can be converted to site data for a quick more long term assessment. The idea is to gather a week or so of wind data then compare that to the nearest recording site say like a weather station or airport. I have a need to assess sites for their potential as suitable for wind power generation. First the datalogger, and then how Gill made this anemometer from spare parts. The design is based on the PicAxe chip, and shows how the PicAxe can be used with EEPROM chips (24LC256's) to increase its data memory. Gilbert ( Gill on the forums )from Cairns, Queensland Australia has put together a Aneometer with logging! »General Interrest About TheBackShed Getting Started Privacy Policy
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