What Are The Performance Indicators Of Ultrasonic Sensors

What are the performance indicators of ultrasonic sensors?

The core of the ultrasound probe is a piezoelectric wafer in its plastic jacket or metal jacket. There are many kinds of materials constituting the wafer. The size of the wafer, such as diameter and thickness, is also different, so the performance of each probe is different, we must know its performance before use. The main performance indicators of ultrasonic sensors include:

working frequency

The operating frequency is the resonant frequency of the piezoelectric wafer. When the frequency of the alternating voltage applied to both ends thereof is equal to the resonant frequency of the wafer, the energy output is the largest and the sensitivity is also the highest.

Operating temperature

Because the Curie point of piezoelectric materials is generally high, especially for diagnostic ultrasound probes.

Ultrasonic sensor

The power is small, so the operating temperature is relatively low, and it can work for a long time without failing. Medical ultrasound probes are relatively hot and require separate refrigeration equipment.

Sensitivity

It mainly depends on the manufacture of the wafer itself. The electromechanical coupling coefficient is large and the sensitivity is high; on the contrary, the sensitivity is low.

Directivity

Ultrasonic sensor detection range

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