The temperature analysis system «Digital Flow» is designed to measure and monitor air temperature fluctuations. «Digital Flow» system was specifically designed to locate ascending air flows in aeromodelling sports.
The temperature analysis system «Digital Flow» consists of a fast-acting and high-sensitivity temperature sensor and portable receiver device. The sensor should be positioned on a mast in a remote location away from the place where an airplane model is being launched, and the receiver device can be placed in any location convenient for the user.
Measured data is transferred from the sensor to receiver using a digital radiochannel of a fixed frequency. Each sensor is assigned a unique code for its radiochannel, which allows several sensors to work simultaneously. The data transfer process implements a noise cancelling algorithm for error detection and correction . The three button interface on the receiving device allows users to change the settings and work-mode of the device.
Transferred data is first processed by the microprocessor in the receiver, and then results are displayed on its graphical LCD display as a numbers and temperature graph. Ascending air flows can be then determined by the visual analysis of temperature fluctuations on this graph.
Sensor - technical specifications
Temperature sensor sensitivity - 0.01 ºC
Temperature range - 0 – 61.44 ºC
Response time - t0.5 – 0.6 Sec , t0.9 – 7 Sec
Number of reads per second - 4
Output power of transmission device - 6.0 mW
Transmission frequency - 433.92 MHz
Voltage - 1.6 – 3.3 V (2x ÀÀÀ – Uptime: 2-3 days)
Current - 18-40 mA
Size - 57 x 49 x 24 mm (2.24'' x 1.92'' x 0.94'')
Receiver - technical specifications
LCD graphical display - dimension 133 x 64 Pixels, monochrome
Temperature unit values on Y axis - 0.16 - 10.24 ºC
Displacement velocity of graph on X axis - 0.2 – 4 Pixels/Sec
Period of time for complete refresh of graph - 19.2 – 384 Sec
Maximum operational length - 300 met (328 yd).
Voltage - 0.9 – 1.5 V (1x ÀÀÀ – Uptime: 3-4 days)
Current - 20-35 mA
Size - 88 x 57 x 17 mm (3.46'' x 2.24'' x 0.67'')