Using Piezo Disc and Ceramics as Electromechanical Transducers

The notable developments in the piezoelectric technology simplified many manufacturing processes. New sorts of ceramics are being used for converting different mechanical factors into electrical signals. Similarly, the modern applications where the mechanical movements required, electrical parameters applied to the Piezo-ceramics. Both of these mechanisms are now getting more adoptability from different industries positively. The whole conversion process documented and researched further. Nowadays, the researches on this topic made its applications more flexible.

The Ultrasonic Theory:

Piezo disc and other varieties of Piezo-ceramics classified into different categories as per their functions. In fact, the whole process is determined through the input and output measurements. The applications are expanding widely resulting complex chemical compositions. In reality, there are various types of materials considered for power transducers, sensors, and actuators differently. Conductive adhesives, rubbers, spring contacts, and advanced soldering technologies used for contacting these materials.

Use of Piezo Element as Sensors in Consumer Applications:

Ultrasonic Distance Sensors – The complete process of distance measurement using piezo disc is done by ultrasonic air wave. First of all the air wave has to be sent from the piezo-ceramic disc headed for the object to be measured. And that object too reflects a tiny sound wave which the disc captures again. The disc comes with an adaption layer to enhance the receiving capabilities through the time multiplex mode operation. These are round in shape and being used in different consumer electronic items and smart gadgets.

Acceleration Sensors – This part of piezoelectric application is used as a measurement tool using the electrical signals capturing. During the process, a round disc shaped, ring or rectangular piezo-ceramic sensor plate converts pressure vibrations into electrical signals. The force applied to the connected disc actually gets the pressure from the piezo-ceramic part. After the force is applied, the whole system gets accelerated. It is useful in finding imbalances in vehicle wheels precisely.

Flow Rate Measurement – These types of sensors are quite unusual in day to day applications. But it is essential in different mechanical processes. The both of the measuring techniques such as the Doppler Effect and the travelling wave time analysis features different functionality. The frequency of waves is measured by the transducer placed on the tube wall. That piezo element also generates ultrasonic waves. The Doppler Effect requires only one transducer that can do both sending and receiving functions. But in the other mechanism, two transducers to be found while detect the direction of flow.

Burglar Alarms – The use of piezo disc and other piezo-ceramic transducers are common in burglar alarm systems. Its placement and functions of every disc varies according to the requirements. These are small in size so get easily fit in any surface. Whenever a break-in attempt or unusual movements found in the room where the transducer positioned, the alarm rings. The sensors actually capture the noise and vibrations and transforms electrical signals to activate the alarm system.

Nowadays, there are many other applications of these piezo element are being common. You can find it in a round disc, rectangular or square plate shape in the sensors.

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