The ultrasonic sensor is used as a kind of sensor, and it has been widely used in the measurement of industrial production. Let us clarify the use of clarification and attention to the ultrasonic sensor.
(1) Application clarification1) Features and utilization
The ultrasonic sensor is a sensor developed using the characteristics of ultrasonic waves. Ultrasonic waves are machine waves with a vibration frequency higher than that of sound waves. Vibration is generated by the transducer chip under the encouragement of voltage. It has high frequency, wave right and wrong, small diffraction scene, especially good bias, and may become radiation. Directional distribution and other characteristics. Ultrasonic penetration of liquids and solids is very important, especially in solids with unclear sunlight, how many depths it can penetrate. Ultrasonic encounters impurities or interfaces that cause significant reflections to form reflections into echoes, and the Doppler effect can occur when moving objects are encountered. Therefore, ultrasonic testing is widely used in industry, national defense, biomedicine and other aspects.
2) Mission frequency
The task frequency is the resonant frequency of the piezoelectric chip. When the frequency of the switching voltage applied to both ends is commensurate with the resonant frequency of the chip, the output energy is the highest and the acuity is also the highest.
3) Mission temperature
Because the Curie points of the piezoelectric data are relatively high, especially the ultrasonic probe for diagnostic use has a small power, so that the task temperature is relatively low, and the task can be long-term without taking effect. Medical ultrasound probes have a higher temperature and require separate refrigeration equipment.
4) Acuity
It depends on the chip itself. The electromechanical coupling coefficient is high and the acuity is high; on the contrary, the acuity is low.
(2) Ultrasonic sensors to pay attention to matters1. To ensure reliability and long application life, do not apply sensors outdoors or at locations above the extra temperature.
2. Because the ultrasonic sensor uses the atmosphere as the transmission medium, when the temperature is different, the reflection and refraction at the boundary may cause wrong actions, and the detection interval will change when the wind blows. Therefore, sensors should not be applied next to equipment such as forced air blowers.
3. The jets ejected from the air nozzle have multiple frequencies, which affect the sensor and should not be used adjacent to the sensor.
4. The nominal water droplets of the sensor shrink the detection interval.
5. The data such as fine powder and cotton yarn are unfortunately detected when receiving sound (reflective sensor).
6, can not apply sensors in the vacuum zone or explosion-proof zone.
7. Do not apply sensors in areas with steam; the area is not average. A temperature gradient will occur, which will lead to measurement errors.
Through the above description of the application of ultrasonic sensors and the introduction of the matter of attention, I hope to assist in the training of the home.
You recommend MaxBoTIx Ultrasonic Sensor - MB1010
Ultrasonic sensor MB1010 beam diagram:
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The LV-MaxSonar-EZ ultrasonic sensor is a traditional product of MaxSonar. It is also the company's most popular indoor ultrasonic sensor, and it is also an excellent low-cost general-purpose sensor for customers who are not sure which LV-MaxSonar-EZ sensor to use.
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The most popular ultrasonic sensor
Low power consumption
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