RANCANG BANGUN ALAT PENGUKUR DISTRIBUSI KUAT PENERANGAN MULTI TITIK MENGGUNAKAN SISTEM KOMUNIKASI RS485

Indri Trifiantari, Suryono Suryono

Abstract


ABSTRACT

Meassuring illuminance system was created used multipoint model. The used light sensor was LDR that created used voltage devider model . AVR ATMega8535 microcontroller was used as a data acquisition device and a serial data transmission to a computer. Output of sensor was inserted into the microcontroller ADC input at ADC0 pin. Measured data of the LDR sensor would be processed by AVR ATMega 8535 microcontroller, then sent to a computer using a serial RS485 protocol. The data was interfaced with Borland Delphi7 and saved on Microsoft Excel.

From this research, it was found the measurement from 4 terminal systems which each terminal sistem consist of one measurement point. From the four test systems performed by standard luxmeter obtained equipment precision of device that is made between R = 94.84%, until R = 99.05%.

Key words: Illumination, LDR, RS485 communication system

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