solar radiation

DESIGN OF A SOLAR RADIATION SENSOR USING SOLAR CELL LILY SULASTRI MOHD MUHSIN 0133250 PROJECT SUPERVISOR: ASST. PROF. DR. RIZA MUHIDA 9 DECEMBER 2005

OUTLINE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

BACKGROUND ,[object Object],[object Object],[object Object],Fig. 1 The Solar Radiation Graph

LITERATURE REVIEW ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

PROBLEM IDENTIFICATION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

OBJECTIVE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

METHODOLOGY ,[object Object],SOLAR CELL (SENSOR) SIGNAL CONDITIONING (OP AMP INVERTING) V/F CONVERTER FM TRANSMITTER FM RADIO COMPUTER (FINAL GRAPH) ANTENNA ANTENNA Measure the voltage drop across a small resistance connected to the solar cell Op amp inverting amplifier can amplify the current from the solar cell so that it produces a voltage in a more usable range V/F converter convert measured variable information, Vin from the signal conditioning into a variable frequency FM Transmitter can transmit sound to a FM radio and FM radio receives sound from the FM transmitter Basically FM transmitter and FM radio will have the same frequency PV PANEL CHARGING CONTROLLER CIRCUIT BATTERY

METHODOLOGY ,[object Object],[object Object],0.6 cm 3 cm solar cell 7.5 cm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],3.5 cm 5 cm 7.5 cm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The current, I of the solar cell must be measured using following equations: I = Iph - Id - Ir Iph = Isho ( S / 1000) + Jo ( T – Tref ) Id = Io [ exp ( q [ V + Rs I ] / nkT ) – 1 ] Io = Ido ( T / Tref ) 3 exp [ q Eg ( [ 1 / Tref ] – [ 1 / T ] ) / nk ] Ir = ( V + Rs I) Rsh

METHODOLOGY ,[object Object],[object Object],Transfer function: Vout = - 10000 Vin Vout = - R2 Vin R1 Fig. 3 Signal Conditioning Circuit using Orcad Capture Fig. 2 Signal Conditioning Circuit Vout

METHODOLOGY ,[object Object],Theoretical transfer function: ƒout = 1999.174 Vin Experiment transfer function: ƒout = 1925 Vin Fig. 5 V/F Converter Circuit using Orcad Capture Fig. 4 V/F Converter Circuit ƒ out = m Vin + c

METHODOLOGY ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Fig. 6 FM Transmitter Circuit RF coil L1 0.1 μF (104) C6 27 pF C5 5 pF C4 0.001 μF (102) C3 0.01 μF (103) C2 0.1 μF (104) C1 Trimmer (frequency adjust) VC 9018 (NPN) Q2 9013 (NPN) Q1 390 Ω R5 47 kΩ R4 10 kΩ R3 1 MΩ R2 22 kΩ R1 Description Components

METHODOLOGY ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

WORKPLAN FOR PROJECT 2 Table 1 Workplan for Project 2 Task 1: Circuit development Task 2: Building the solar radiation sensor Task 3: Analysis, simulate and testing circuit Task 4: Report writing and submission Task 5: Prepare for the presentation 5 4 3 2 1 Wk 14 Wk 13 Wk 12 Wk 11 Wk 10 Wk 9 Wk 8 Wk 7 Wk 6 Wk 5 Wk 4 Wk 3 Wk 2 Wk 1 Task

CONCLUSION ,[object Object],[object Object],[object Object]

solar radiation

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