ESC hydraulic brake pressure sensor based on metal thick film technology

Image source: Feien Microelectronics

Applied technology: ESC hydraulic brake pressure sensor based on metal thick film technology

Application area: Body and chassis technology

Innovation and advantages

Technical description:

Based on the unique metal thick film technology, the surface of the stainless steel substrate is ceramicized, which solves the key technical difficulties in the interface bonding of heterogeneous materials and overcomes the problem of cracking or peeling of the dielectric layer on the metal surface. It realizes the low-cost and batch processing of piezoresistors on the surface of the metal substrate, and combines with high-precision laser trimming technology to achieve large-scale and consistent output of piezoresistors, and can measure fluid pressure up to 280Mpa.

Unique advantages:

The pressure measurement range is wide, and it can realize the extremely small size packaging of high-pressure sensors; it has a medium-isolated measurement method, strong medium compatibility, and is suitable for harsh working conditions. It has achieved consistency, repeatability, reliability, durability, high yield and low stress multi-objective optimization design, breaking through the decades of domestic pressure sensor signal drift, poor stability, and short life problems, and is applied in large quantities to the main control systems of automobiles and high pressure measurements required in the industrial field.

Application scenarios:

It covers a wide range of application scenarios such as vehicles, chemicals, and industrial control, especially in vehicle stability control systems (ESC), intelligent braking systems (Ebooster, Two box, One box), engine fuel direct injection systems (GDI), etc.

Future prospects:

Based on this technology, force sensors required for the electronic mechanical brakes (EMB) of future fully electrified vehicles, high-pressure monitoring of hydrogen fuel for new energy vehicles, and medium and high-pressure pressure measurement for CO2 heat pump air conditioners can be developed.

Golden Album Award Introduction:

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