As the core link between sensors and processing units

sensor interface circuits are crucial to information acquisition system reliability. However

in industrial automation

intelligent devices and other scenarios

they suffer from electromagnetic interference (EMI)

mechanical vibration

device noise and other interferences

seriously affecting signal quality and measurement accuracy. This study proposes a multi-dimensional collaborative anti-interference system covering physical

circuit and digital layers: physical layer uses composite shielding and hierarchical grounding to block interference (20-80dB shielding for high-frequency EMI); circuit layer adopts low-noise conditioning and isolation to purify signals; digital layer applies Kalman-wavelet fusion filtering and fault-tolerant coding to correct errors (communication success rate up to 99.9%). Engineering applications in pressure sensors

MEMS accelerometers and wireless nodes show that measurement errors are reduced to ±0.1%FS

posture recognition error rate is below 2%

and battery life is extended to 18 months. This research provides an efficient solution for improving anti-interference capability of sensor interface circuits.