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A piezoelectric force sensor is a device that converts changes in pressure, acceleration, temperature, strain, or force into an electrical charge in order to measure them.
The Greek word for “push” or “squeeze” is piezo-. Piezoelectric sensors are adaptable instruments for measuring a variety of processes. In numerous sectors, they are employed for process control, quality assurance, and R&D.
This measurement method has become a mature technology with outstanding inherent reliability as a result of its expanding use.
They have been utilized successfully in a variety of applications, including pressure and tilt sensors for touchpads in mobile phones and nuclear, aerospace, and medical instruments.
When building internal combustion engines, the automotive industry uses piezoelectric components to monitor combustion. The sensors are either integrated into the spark/glow plug or are directly installed into additional cylinder head holes.
Directly linked to a number of inherent benefits is the development of piezoelectric technology. Many piezoelectric materials have high elasticity moduli that can reach 106 N/m2, making them similar to many metals.
Piezoelectric sensors are electromechanical devices that respond to compression, although the deflection of the sensing parts is essentially nonexistent.
This provides piezoelectric sensors with robustness, a very high natural frequency, and great linearity over a broad amplitude range.
Piezoelectric technology also allows for measurements in challenging environments since it is immune to electromagnetic fields and radiation.
The use of materials that are particularly stable at high temperatures, such as gallium phosphate or tourmaline, allows sensors to operate up to 1000 °C.
In addition to the piezoelectric action, tourmaline also exhibits pyroelectricity, which is the capacity to produce an electrical signal when the crystal’s temperature changes.
Resonance and capacitance measurements taken concurrently using piezoelectric sensors can also be utilized to identify fragrances in the air. The spectrum of possible uses for piezoelectric sensors is greatly expanded by computer-controlled electronics.
Nature also has piezoelectric sensors. Many people believe that the piezoelectric collagen in bones serves as a biological force sensor.
Additionally, collagen in soft tissue including the aorta walls, heart valves, and Achilles tendon has been found to have piezoelectricity.
The Global Piezoelectric force sensors market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
A sensor that can detect light forces was just launched, according to Kistler. For usage in industrial settings, the 9323AAA was designed.
On the foundation of the 9323-product family, the 9323AAA piezoelectric force sensor was developed. It provides an answer for calibrating force sensors put in manufacturing equipment.
The sensor can correctly measure forces less than 5 N with a sensitivity of -32 pC/N. Kistler’s expertise in measurement technology has created a novel crystal to accomplish this.
They are mounted in the tried-and-true sensor cases of the 9323 product family, which are made by Kistler in-house at its Winterthur headquarters.
