How to choose solar panels, batteries, and ball cameras for solar monitoring systems

Nowadays, the application of solar monitoring system is becoming more and more popular. Many solar systems will have insufficient power supply during use. So, how to choose between the three in order to use them normally?

The first step: surveillance camera power consumption;

For example: 2.5-inch ball machine 12V power consumption is 0.35A, infrared light is 0.1A, and gimbal is 0.1A, then the power consumption of the dome is 4.2W during the day, the gimbal is 1.2W, and the power consumption of the infrared light is 1.2W at night

The power consumption of the small ball machine during the day is (4.2W+1.2W)*12H=64.8W (calculated according to the maximum power consumption, the gimbal handles the cruise state)

The power consumption of the ball machine at night is (4.2W+1.2W+1.2W)*12H=79.2W (the infrared light is turned on for 12 hours)

Daily average power consumption 79.2W/24H=3.3W

The second step: choose the battery;

Battery capacity (A) = daily average power consumption of equipment * 24H * battery life in rainy days / battery rated voltage / battery discharge depth

Rated voltage: lithium battery 11.1V (three 18650 batteries connected in series 3.7V*3=11.1V), gel 12V, discharge depth: lithium battery 0.97, gel 0.7

For example: the battery life is three days, the lithium battery capacity is 3.3W*24H*3D/11.1V/0.97=22A, about 20A battery; the gel battery capacity is 3.3W*24H*3D/12V/0.7=28A, about 30A battery

The third step: power selection of solar panels;

Solar panel power = (daily average power of equipment * 24H + average daily power of equipment * battery life in rainy days * 24H / recharge days) / local radiation time / controller charging efficiency / battery discharge conversion rate

The radiation duration is 3H in winter and 4H in summer, the charging efficiency of the controller is 0.9, and the conversion rate of the battery is 0.9

For example: the battery life is 3 days in rainy days, the recharging days are 1 day, and the summer is 4H

Then the power of the solar panel is (3.3W*24H+3.3W*3D*24H/1D)/4H/0.9/0.9=97.78W, which is about a 100W solar panel.

According to the above, the 2.5-inch ball can last for 3 days in rainy days. The battery uses a 20A lithium battery and the solar panel uses 100W; Solar panels.