1.Product Introduction Professional MEMS piezoresistive pressure sensor specially designed for electronic blood pressure monitors. It accurately detects tiny air pressure changes inside the cuff and transmits precise pressure signals to the main control chip to calculate systolic and diastolic blood pressure values. 2.Working Principle Internal silicon diaphragm deforms with the inflation pressure of the cuff, changing the resistance of the Wheatstone bridge. The built-in conditioning circuit converts micro pressure changes into standard electrical signals, and the main chip converts signals into readable blood pressure data through algorithm calculation. 3.Common Technical Parameters Pressure type: Gauge pressure (based on atmospheric pressure) Working medium: air (non-condensing) Working range: -10~+330mmHg(-1.33~+43.99kPa) MmHgRMS pressure effective resolution: 0.040/0.028/0.020/0.005 Precision: ±2mmHg (266Pa) Supply voltage: 2.2 to 3.6V Response time: 3.91/7.81/15.625/250 ms Working current: 800μA Standby current consumption: 0.2μA Operating temperature: 5 to 45℃ 4.Product Structure High-sensitivity MEMS pressure chip, signal trimming circuit, mini plastic housing, air pressure guide hole, soft wire terminals 5.Core Functions High-precision real-time cuff air pressure detection Capture tiny pressure fluctuations of human pulse Accurate calculation of systolic and diastolic blood pressure Support continuous blood pressure monitoring 6.Typical Fault Performance Blood pressure reading deviation is too large Unstable numerical fluctuation during measurement No pressure response when the cuff inflates Zero point drift after long-term use 7.Application Scope Household electronic sphygmomanometers, medical hospital blood pressure monitors, portable wearable blood pressure equipment