Development of Telemetry System for Light Intensity Measurement by Using a Wireless LAN
Abstract: A remote measuring
system using wireless LAN (Local Area Network) for light intensity measurement
has been developed. It made use of a socket programming and TCP/IP protocol.
The system consisted of a light source, an OPT 101 sensor, an ADC 0804, an
AT89C51 microcontroller, and a wireless LAN system. The result of sensor
calibrations showed a linear relationship between light intensity and sensor
output (I = 5.6337 V- 4.4912; R2= 0.9913). The light intensity varied from 51
to 3,912 lux. By using Delphi and assembler utility for microcontroller, the system could be automated
and displayed in a form of light intensity values both on the server and client
computers. In order to see the influence of the server and client computer
distance receptivity on the measurement result, the signal strength was also
measured by using Net Stumbler software whose distances were varied from 2 to
226 m.
Penulis: I Nyoman Sudiana
Kode Jurnal: jpfisikadd140904
