1.Key Technical Specifications Measuring medium: DOT3 / DOT4 brake fluid Measuring range: 0–10MPa standard range, customizable Wetted material: 17-4PH stainless steel integrated diaphragm Operating temperature: -40℃ ~ +140℃ full zero & span temperature compensation Measurement accuracy: ±0.4%FS ~ ±1.2%FS Safe overload: 3 times full scale; burst pressure up to 8× rated pressure Response time: ≤7ms ultra-fast dynamic pressure feedback Ingress protection: IP67 dustproof, waterproof and brake fluid corrosion resistant Supply voltage: Standard 5VDC automotive power supply Output signal: Analog 0–5V or I2C digital signal Vibration resistance: 10–25g, adapt to vehicle bumpy driving conditions Service lifespan: Over 5 million pressure cycle tests, long-term stable performance 2. Core Function Instantly capture hydraulic pressure when driver steps on brake pedal, feed real-time pressure data to ABS/ESP ECU. Support anti-lock braking, electronic stability control and automatic emergency braking (AEB) logic judgment to adjust wheel braking force dynamically. Monitor dual-circuit brake pressure difference; trigger dashboard brake fault warning once single circuit pressure loss or pipeline leakage occurs. All-metal oil-free micro-fused structure avoids medium leakage risk, maintains stable measurement under frequent brake impact and high temperature. Built-in reverse polarity, short-circuit and EMC anti-interference protection, self-diagnosis function detects circuit failure and abnormal pressure, stores DTC fault codes. 3. Working Principle It applies glass micro-fused silicon piezoresistive sensing principle: Brake fluid hydraulic pressure directly acts on the solid stainless steel diaphragm and creates tiny elastic deformation. Silicon strain gauges permanently fused on diaphragm produce linear resistance changes proportional to brake pressure. Internal Wheatstone bridge converts resistance fluctuation into weak voltage signals. ASIC signal processing chip completes temperature compensation, amplification and filtering, then outputs stable electrical signals to vehicle brake control unit. 4. Application Scope Vehicle Types Passenger cars, SUVs, MPVs, new energy electric vehicles, light commercial vehicles equipped with ABS, ESP and AEB systems System Modules Brake master cylinder assembly, ABS hydraulic control unit, regenerative braking system of NEVs Application Scenarios Active safety braking control, brake system real-time health monitoring, intelligent driving auxiliary braking system