Ultrasonic Transducer information
- Phase estimation method of ultrasonic transducersThe phase estimation method of time delay estimation is a practical method to improve the accuracy of ultrasonic delay estimation. Based on the fact that for a simple harmonic, the fourier transform (DFT) can be used to calculate its fourier coefficient corresponding to the resonant frequency, and tUltrasonic Transducer information September 24, 2018
- What’s the multi-probe ultrasonic range finderA multi-probe ultrasonic range finder for detecting traffic flow conditions, which not only provides information for traffic flow survey statistics and intersection traffic signal automatic control systems, but also applies to various automatic monitoring related to motor vehicle passing and arrivalUltrasonic Transducer information September 24, 2018
- Main performance indicators of ultrasonic transducersRay characteristics of ultrasonic waves are formed in a straight line when they encounter two substances with different acoustic impedance ratios.At the interface, reflection and refraction transmission occurs. The reflection and refraction of ultrasonic waves follow the laws of geometric optics. ThUltrasonic Transducer information September 27, 2018
- Radial vibration mode of the ultrasonic transducerModeling and experiment of ultrasonic transducer in the air medium, the frequency band of the ultrasonic sensor is generally narrow, which directly affects its detection performance for high-speed moving targets. In order to solve the narrow band of the ultrasonic sensor, a micro-miniature transduceUltrasonic Transducer information September 27, 2018
- theoretical analysis of vibration mode ultrasonic transducersWhen the axial and radial electromechanical factors of the disc-type piezoelectric vibrator are relatively strong, the one-dimensional theory established by the pure radial model or the pure thickness model is not accurate enough. Between the theoretical calculated value and the experimental value.Ultrasonic Transducer information September 30, 2018
- Acoustic impedance of a disc type piezoelectric vibrator transducerPiezoelectric disc type of transducers discuss the advantages and disadvantages of various forms of ultrasonic transducer. Considering the performance, mounting dimensions and field testing of ultrasonic ranging sensors, piezoelectric ceramic discs are selected radial/ thickness of the vibration modUltrasonic Transducer information September 28, 2018
- Impedance characteristics of piezoelectric ultrasonic transducersA physical picture of a piezoelectric disc-type transducer designed and fabricated. In order to reduce the influence of multipath noise, using the aforementioned sound field Fresnel zone, the ultrasonic transducer is slightly higher than the radiating surface (or acoustic window) of the piezoelectriUltrasonic Transducer information September 28, 2018
- The functions and blind zone of ultrasonic transducerOutput function All series of ultrasonic sensors have a switch output type. Some products also have 2 switching outputs (such as minimum and maximum level control). Most products offer either analog currents or analog voltage output. Noise suppression, metal knocking, roaring and other noises do notUltrasonic Transducer information September 20, 2018
- Error and precautions of ultrasonic distance sensorIn the industry, the typical application of ultrasonic distance transducers are non-destructive testing of metals and ultrasonic thickness measurement. In the past, many technologies were hindered by inability detecting the inside of objects, and the emergence of ultrasonic sensing technology changeUltrasonic Transducer information September 21, 2018
- Working Mode of Ultrasonic SensorWork programIf a piezoelectric ceramic piece with a resonant frequency of 40 kHz in the transmitting sensor is applied (a 40 KHz high-frequency voltage is applied to the double crystal oscillator, the piezoelectric ceramic piece is elongated and shortened according to the polarity of the applied higUltrasonic Transducer information September 20, 2018