Application technology of ultrasonic sensors in automobile manufacturing

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Application technology of ultrasonic sensors in automobile manufacturing [Copy link]

A sensor is a detection device that can sense the information being measured and can transform the sensed information into electrical signals or other required forms of information output according to certain rules to meet the requirements of information transmission, processing, storage, display, recording and control. With the development of science and technology, sensors have become an indispensable and important element in the development of science and technology. Existence detection is one of the more common applications of sensors. Generally, proximity sensors are used to achieve this purpose. However, when encountering special measurement objects, this method is usually difficult to work. Everyone knows that glass has special physical properties, so it has always been an unbreakable problem in detection. However, in the process of automobile manufacturing, the detection of sunroofs requires the detection of glass. So how can we solve this problem through sensors?

In some practical applications, the existence detection of glass is indispensable. In order to break the existing situation in glass detection, we can use ultrasonic sensors for measurement. Ultrasonic sensors are sensors developed using the characteristics of ultrasonic waves. It is a mechanical wave with a higher vibration frequency than sound waves. It is generated by the vibration of the transducer chip under the excitation of voltage. It has the characteristics of high frequency, short wavelength, small diffraction phenomenon, especially good directionality, and can become rays and propagate in a directional manner. Ultrasonic sensors can detect the status of containers and can be used in food processing plants to realize a closed-loop control system for plastic packaging detection. Ultrasonic sensors can detect transparent or colored objects, metal or non-metal objects, solids, liquids, and powdered substances. Since the sunroofs of cars are mostly almost transparent, various sensors based on optical principles cannot measure them. Ultrasonic sensors can emit ultrasonic waves outward and receive echoes from the glass surface. By combining the time and wave speed of receiving the echo, the distance of the object can be inferred. When the time constant measured by the sensor is within the preset range, it means that there is glass detected at the sunroof of the car; conversely, when the sensor does not receive an echo, it means that the glass is not detected.

Migatron Corporation Autonomous Ultrasonic Proximity Sensor - RPS-400-30 is designed to solve some very difficult problems. The RPS-400-30 is an autonomous ultrasonic proximity sensor with a 22mm cylindrical housing and a power supply voltage of 12-30VDC. The sealed sensor is dust and moisture proof in harsh environments. The sensor is made of Delrin plastic and a silicone rubber sensing face. This sensor is sensitive to range or distance, allowing it to only detect objects within the desired range and reject objects outside the desired range.

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