How to detect the dirtiness of photovoltaic panels

How to detect dirt on solar panels?

Also, a humid environment increases forces that cause the stickiness of dust. A crude method for dirt detection on the solar panel is physical observation by professionals. This method is time-consuming, and it is financially expensive to have technical personnel to regularly observe a giant farm.

How do solar panels detect dust?

A dirt detection mechanism on a solar panel was made by . A weight sensor in the system continuously measures the dust. Upon receiving defined feedback from the sensors, the Arduino controller commands the dust cleaning. Solar panels are fitted with weight sensors that measure dust thickness according to changes in weight.

Can a color sensor detect clean and dirty solar panels?

An inexpensive and passive color sensing on the solar panel that can distinguish the clean and dirty panel surfaces according to their color change has been proposed. The color sensor detects the RGB values of the solar panel.

How to detect dust on PV panels?

Another methodology of detecting dust was introduced in , where the PV output voltage and current are monitored to operate the washing unit when the output power is less than 50% of the rated power during the daytime. Researchers in [18, 19] investigated the feasibility of imaging process technology to detect dust on PV panels.

What happens if a solar panel gets dirty?

Dirt on solar panels' exteriors limits the reception of the sun's energy, causing a significant reduction in electricity produced by the solar panel system [ 4, 5 ]. The reduction in the solar panels’ output also results in a decrease in the system efficiency while the module degradation is increased.

Can robots detect dirt on solar panels?

Solar panels are mostly found on rooftops and in remote fields, so automated dirt recognition and cleaning using robotic systems have proven to be more effective than other methods for detecting dirt accumulation.