Ultrasonic transducer (sensor) standard detector is 100×100mm, blind area 200mm. Ultrasonic transducer price is cheap, but with high quality ABS engineering plastics. Ultrasonic wave response time about 48ms(min), storage temperature between -25 ℃ and 70 ℃.
||Less than 50mA
||-20 ℃—+60 ℃
||-25 ℃—+70 ℃
||100VAC 50/60Hz, 1minute
|Insulation Electronic Resistance
||DC 500V, more than 20MQ
||ABS engineering plastics
Tips: Working Principle of Ultrasonic Sensor
The main materials of ultrasonic sensor are piezoelectric crystal (electrostrictive) and nickel-iron aluminum alloy (magnetostrictive). Electrostrictive materials include lead zirconate titanate (PZT), etc. Ultrasonic sensor composed of piezoelectric crystal is a reversible sensor, it can transform electrical energy into mechanical vibration and produce ultrasonic, at the same time it receives ultrasonic, can also be converted into electrical energy, so it can be divided into transmitter or receiver. Some ultrasonic sensors can receive as well as send.
It is composed of transmitting sensor, receiving sensor, control part and power supply part. The transmitter sensor is composed of a transmitter and a ceramic oscillator transducer with a diameter of about 15mm. The function of the transducer is to transform the electric vibration energy of the ceramic vibrator into super energy and radiate to the air. The receiving sensor consists of a ceramic vibrator transducer and an amplifier circuit. Transducers receive waves to generate mechanical vibration, which is converted into electrical energy, as the output of the sensor receiver, so as to detect the ultrasonic signal sent. In practice, the ceramic vibrator used as the transmitter can also be used as the ceramic vibrator of the receiver sensor. The control part mainly controls the pulse chain frequency, duty cycle, sparse modulation, counting and detection range of the transmitter.