What are piezoelectric ceramics?
Piezoelectric ceramic technology is a technology that utilizes the piezoelectric effect. The piezoelectric effect refers to the change in charge distribution that occurs in certain materials when they are subjected to mechanical stress, which generates a voltage across the material. Piezoelectric ceramics are one such material, and they are usually oxide ceramics such as zirconium titanate and barium titanate.
Application Scenario:
Piezoelectric ceramic technology is used in many fields, including sensors, actuators, acoustic devices, etc. Kepo car alarms and sensing products apply piezoelectric ceramic technology to better generate acoustic waves and receive acoustic signals. For example, in sensors, piezoelectric ceramics can convert mechanical energy into electrical energy for measuring physical quantities such as pressure, acceleration, etc. In actuators, they can be used to generate mechanical deformation by applying an electric field for controlling valves, panning platforms, etc.
Developments and future trends
Piezoelectric ceramic technology has been continuously developing, involving a variety of fields, including electronics, communications, medical, automotive, aerospace, and so on. The following are some of the development trends and application directions of piezoelectric ceramic technology in recent years:
Miniaturization and integration: With the increased demand for miniaturization and intelligence of electronic devices, piezoelectric ceramic devices are also moving towards a more miniaturized and integrated direction to meet the needs of various applications. This includes piezoelectric ceramic sensors, piezoelectric ceramic motors, and so on.
Versatility: In recent years, piezoelectric ceramic devices have not only played a role in sensing and actuation control but have also been used for energy harvesting and storage, such as piezoelectric ceramic energy harvesting devices, which convert mechanical vibrations into electrical energy.
Smart materials and self-sensing systems: Piezoelectric ceramic technology combines the concepts of smart materials and self-sensing systems, which can realize the functions of self-adaptation, self-sensing, and self-repairing, and is applied in the fields of structural health monitoring and smart material manufacturing.
Environmental monitoring and security applications: Piezoelectric ceramic sensors can be used for environmental monitoring, such as seismic monitoring, structural health monitoring, etc., as well as for security applications, such as vibration sensors and pressure sensors.
The development trend of piezoelectric ceramic technology is mainly focused on improving performance, expanding application areas, and realizing multifunctionality and intelligence to meet the demand for high-performance sensors and actuators in different fields.
