Application Example 1: Air-Coupled Transducers

Small size, more matching with air acoustic impedance, low frequency, miniaturized portable obstacle detection in the air: robot, VR, drone, human-computer interaction, anti-theft, gas flow monitoring, etc.

Portable human body diagnosis in special occasions: ultrasonic communication in battlefields, earthquakes, etc., wireless charging, in-situ embedded monitoring

Probe used: 60KHz PMUT

Size: 3*3mm

Driving voltage: 20V

Receive gain: 60dB

Send and receive mode: one send and one receive

Application Example 2: Nondestructive Testing of Internal Defects of Structural Parts

Application Example 3: Implantable Micro-Ultrasound

Small size, low power, low voltage

Ultrasonic communication, wireless charging, in-situ embedded monitoring (bolt detection, micro-gap monitoring)

Application example 4: On-line monitoring of liquid velocity (flow) in pipelines

The PMUT is small in size and can be integrated with an ASIC to form an ultrasonic micro-module, which can perform real-time online monitoring of the liquid flow in the pipeline.

Application Example 5: Online Monitoring of Pipeline Pressure

When the pressure of the liquid in the pipeline increases, its density and elastic modulus will also increase, so the speed of sound will change, and the response will be different in the ultrasonic testing system, that is, the echo time is different, so that the medium pressure can be detected;

Using the PMUT module can realize online measurement of increased pressure (tens of megapascals) in the pipeline.

Ultrasound module 1

Ultrasound module 2

Application example 6: Internal B-scan imaging of materials based on self-developed PMUT:

Application example 7: 3D imaging inside materials

The use of PMUT area array can realize 3D imaging inside the material. At present, our company has carried out 64 and 256 channel area array PMUT research.

Application Example 8: Underwater Acoustic Imaging

Using PMUT as the receiving array of underwater imaging sonar has the advantages of easy matching of acoustic impedance, large array, miniaturization, and high sensitivity.

Frequency of use: 100KHz~1MHz Detection distance: 10~1000m Imaging mode: 2D or 3D imaging Imaging distance error: <5cm

PMUT device products

The device mainly includes single-channel, four-channel and array structure, and the array structure includes line array and area array.

Frequency range: 50K-20MHz

High frequency narrow pitch line array

32-channel line array (one channel for every two columns, to increase the sound emission intensity)

Channel center distance: 0.58mm

Frequency: 3/5MHz

Chip size: 20*3.5mm²

64 channel line array

Channel center distance: 0.25mm

Frequency: 3/5MHz

Chip size: 17*3.5mm²

64 channel line array

Channel center distance: 0.25mm

Frequency: 1.5/3MHz

Chip size: 23*3.5mm²

64 channel line array

Channel center distance: 0.18mm

Frequency: 5/10MMHz

Chip size: 23*3mm²

high frequency area array