At five o 'clock in the morning, Yangcheng, Jiangsu Province, "fishing and light one" base, farmers Lao Chen squatting in the pond worry - the head is a piece of photovoltaic panels, the foot is turning the belly of the bass seedling.
No one expected that three months later, a group of nail-sized black boxes -CHIPSENSE AN5V series current sensors, unexpectedly let this 3,000 acres of fish pond to achieve "power generation increased by 13%, fish fry survival rate doubled" wonder.

1. The "Triangle of Death" of Yuguang Power Station
   Yuguang power station has three fears:
   1. Fear of leakage: water body + HVDC = large area electric shock of fish
   2. Fear of corrosion: salt spray water vapor can rust through the sensor housing in half a year
   3. Fear of occupying an area: traditional current detection equipment to occupy the boat lane space

The painful lessons of a head enterprise in 2022 are still being discussed by the industry:
- A misjudgment of the current sensor in a project in northern Jiangsu resulted in nighttime reverse discharge of the inverter
- Charged pond water killed 200 thousand pounds of crabs
- The amount of compensation exceeds the annual income from electricity generation

1. Hall sensor "aquatic special tone"
   On CHIPSENSE current sensor AN5V's dissecting table, there is a code to crack the fishing trap:
   1. Insulation black technology: Wear "rubber boots" to the current
   - Original sub-side 6000V insulation voltage (more than 3 times Yuguang national standard)
   - Potting glue mixed with diatomaceous earth: laboratory data → After soaking brine water for 2000 hours, the insulation resistance decreased by only 8%
   "We added body armor material to the glue." Technician Xiao Zhao opened the experiment box, and the sensor shell that had been soaked for half a year was still shining cold.

2. The Miniaturization Revolution: Guardians smaller than fish feed
- 67% smaller: the palm-sized CHIPSENSE current sensor AN5V is hidden on the back of the PV bracket
- No insertion loss design: the measured branch power generation loss is reduced from 0.3% to 0.07%
"It used to take out five photovoltaic panels to install a sensor," Chen said. "Now it's like putting Band-Aids on a shelf."

3. The survival philosophy behind violent certification
-UL 94-V0 flame-retardant housing: 45 seconds with a spray gun without open flame (live demonstration burnt the engineer's bangs)
- IEC 61010 Double insurance: Maintain 0.5 class accuracy at 98% humidity at the pond edge
The most convincing operation team was the "dirt test" - tying the sensor to the aerator, following the machine in the water for three months, and finding that the zero shift of the magnetic core was only 0.03%.

1.  Visible "Three Books"
   1. Ecological Ledger: The secret of fish electrolysis
   - AN5V's ±0.5% accuracy reduces the inverter's standby power consumption by 40% at night
   - Pond leakage current is suppressed below 0.2mA/m² (fish stress response threshold)
   "Now I dare to open the monitoring in the early morning, and the current curve is more stable than an electrocardiogram." Chen has a video comparison on his phone: Fish that had been turned white by electric shocks now swing their tails in the shadow of photovoltaic panels.

2. Economic accounts: The magic of earning 2 cents more on electricity
- Lossless design generates 37,000 kilowatt-hours of electricity per year (enough for 200 households)
- 25% reduction in O&M costs due to modular replacement
3. Environmental accounts: Ambition hidden in standards
- EN50178 Certified escort 20-year life cycle
- Shell made of recycled polycarbonate (each AN5V recycled = save 5 water bottles)

Conclusion
When the industry is still debating whether "fishing-light complementation is a false proposition", on the monitoring screen of Yancheng Base, the current curve returned by CHIPSENSE current sensor AN5V is perfectly overlapping with the cruise track of fish.
Perhaps as the CHIPSENSE engineers wrote in the Tang side of the joke: "We are not building sensors, is to give electronic components aquaculture professional lessons."

CHIPSENSE photovoltaic current detection application cases CHIPSENSE is a national high-tech enterprise that focuses on the research and development, production, and application of high-end current and voltage sensors, as well as forward research on sensor chips and cutting-edge sensor technologies. CHIPSENSE is committed to providing customers with independently developed sensors, as well as diversified customized products and solutions.
“CHIPSENSE, sensing a better world!
www.chipsense.net