In principle

using Hall effect to detect current; in structure

using differential magnetic circuit for temperature correction and CMOS technology for a higher degree of integration; in precision

using STM32 MCU to achieve linearity adjustment and temperature compensation; by adding shielding layer to reduce electromagnetic interference. It has CAN bus transmission functions

while achieving docking with wireless sensor networks（ WSNs） at the same time

and has short-range wireless transmission capability

which makes the new type intelligent sensors can able to adapt to a variety of high-low temperature environment better. Experiments show that measuring range of sensor can reach ± 100 A

precision can reach 0. 5 %

and CAN bus communication can be achieved

while wireless transmiss

ion can be realized at range of 0

50 m at the same time.