Application Cases

With the rapid development of the electronics and information industry, piezoelectric ceramic materials have attracted increasing attention. However, the electrical properties and characteristics of piezoelectric ceramics face challenges such as high costs and inconvenient measurement. In today's scientific research field, the current state of piezoelectric ceramic electrostrain measurement instruments somewhat limits the in-depth development of related research and teaching work. These instruments typically suffer from high costs due to their complex manufacturing processes, high-precision components, and integration of advanced technologies. Therefore, there is an urgent need for an innovative solution to break the status quo and meet the demand of educational institutions and research facilities for low-cost, miniaturized, and high-precision piezoelectric ceramic electrostrain measurement instruments. This will promote the continuous development of research and teaching in the field of piezoelectric ceramics.

The ATA-7000 series high-voltage amplifiers from Antai Electronics are based on AB class amplification circuits, featuring low distortion and high stability. They have a maximum bandwidth of up to 100 kHz and a maximum output voltage of up to 40 kVpp, and are widely used in testing and performance evaluation of various piezoelectric materials.

Experiment Name: Research on a Novel Low-Cost Piezoelectric Ceramic Strain Detection Method

Experiment Principle:The optical displacement measurement device utilizes the converse piezoelectric effect of piezoelectric materials. This effect occurs when a material with piezoelectric properties deforms proportionally under the action of an external electric field. The deformation of the material is reversible upon removal of the external electric field. The direct piezoelectric effect and the converse piezoelectric effect are inversely related and together characterize the ability of piezoelectric materials to convert mechanical energy and electrical energy. The fiber-optic detection system has a series of characteristics: dry optical fibers are small in volume, light in weight, and highly flexible, allowing for inspection in confined areas such as small holes and cracks with minimal impact on the field being measured; its excellent insulation and heat resistance make it immune to electromagnetic interference, making it suitable for use in high-temperature, high-pressure environments and various challenging industrial conditions. When the object under test undergoes slight displacement, the optical fiber bends slightly, altering the propagation path of the optical signal and thus affecting the intensity of the optical signal. The optoelectronic detector converts these optical changes into electrical signals, which are then analyzed and processed by the signal processing circuit to obtain displacement information of the object.

Experiment Block Diagram:

Experiment Photograph:

Experiment Process:The sample is placed on a sample stage, and a high voltage is applied to the sample through the ATA-7030 high-voltage amplifier to create an electric field. The voltage input of the sample stage and the low-voltage output of the sleeve are connected. The sleeve is connected to the fiber-optic displacement sensor, which is then connected to the acquisition card to facilitate the transmission of sensor signals to the computer for processing. A reference capacitor is connected to an operational amplifier, which is in turn connected to the acquisition card, allowing the polarization measurement signal to be transmitted to the computer for processing. The high-voltage amplifier sends the high-voltage output signal to the computer through a voltage monitoring port, and the computer feeds back to the high-voltage amplifier through a signal generator to adjust parameters such as frequency and electric field.

Application Directions:Scientific Research, Industrial Production, Medical Diagnosis, Aerospace, Environmental Monitoring

Application Scenarios:Piezoelectric Ceramics, Electrostrain, Optical Measurement, Displacement Measurement, Dielectric Field

Product Recommendation:ATA-7000 Series High-Voltage Amplifiers

Figure: Specifications of the ATA-7000 Series High-Voltage Amplifiers