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PIR sensor-based automatic solar-powered UVC LED sterilizer lamp

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Dec 02, 2024

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Figure 1:

Block diagram of UV LED with sensor.
Block diagram of UV LED with sensor.

Figure 2:

Block diagram of UV LED lamp with controller.
Block diagram of UV LED lamp with controller.

Figure 3:

Functional block diagram of P&O method. P&O, perturb-and-observe.
Functional block diagram of P&O method. P&O, perturb-and-observe.

Figure 4:

Proposed converter circuit.
Proposed converter circuit.

Figure 5:

MPPT algorithm. MPPT, maximum power point tracking.
MPPT algorithm. MPPT, maximum power point tracking.

Figure 6:

Equivalent circuit for step-down mode.
Equivalent circuit for step-down mode.

Figure 7:

Equivalent circuit for step-up mode.
Equivalent circuit for step-up mode.

Figure 8:

Step-down mode 1.
Step-down mode 1.

Figure 9:

Waveform for step down.
Waveform for step down.

Figure 10:

Step-down mode 2.
Step-down mode 2.

Figure 11:

Step-up mode 1.
Step-up mode 1.

Figure 12:

Waveform for step-up operation.
Waveform for step-up operation.

Figure 13:

Step-up mode 2.
Step-up mode 2.

Figure 14:

Proposed UVC sterilizer lamp circuit.
Proposed UVC sterilizer lamp circuit.

Figure 15:

UV array ON condition.
UV array ON condition.

Figure 16:

UV array ON condition.
UV array ON condition.

Figure 17:

UV array OFF condition.
UV array OFF condition.

Figure 18:

UV array OFF condition.
UV array OFF condition.

Figure 19:

PV voltage and PV current.
PV voltage and PV current.

Figure 20:

Input current and inductor LA current.
Input current and inductor LA current.

Figure 21:

Gate pulses (QA and QB).
Gate pulses (QA and QB).

Figure 22:

Inductor currents (LA and LB).
Inductor currents (LA and LB).

Figure 23:

Switch currents (QA and QB).
Switch currents (QA and QB).

Figure 24:

LED current and LED voltage.
LED current and LED voltage.

j_ijssis-2024-0037_tab_001

S. No. Component Value
1 Inductor LA 0.1 mH
2 Inductor LB 0.1 mH
3 Capacitor CA 100 μC
4 Capacitor CB 10 μC
5 Capacitor CEB 100 μC
6 Capacitor C0 470 μC
Language:
English
Publication timeframe:
1 times per year
Journal Subjects:
Engineering, Introductions and Overviews, Engineering, other