In the era of "data is king", the importance of information data collection is self-evident. As the main component of data acquisition, sensor shoulders the important task of situational awareness and is the main way for people to obtain production information. As we all know”A handy tool makes a handy man”, in order to build the "industry 4.0" model led by intelligent manufacturing and meanwhile achieve more high-yield and high-quality production services than ever before, it is necessary to improve the perception ability of the front-end devices.
Proximity switch, as a kind of switch sensor, is indispensable in intelligent production. This kind of sensor can complete the operation of equipment opening and closing without contact. The product detection scheme with proximity switch as the core is used to replace the contact detection scheme such as limit switch, which can effectively complete the detection work without touching the detection object, and it can effectively reduce the quality risk in the detection process, ensure the detection safety, pollution-free, and guarantee the yield of good products. At the same time, it can shorten the production cycle and improve production efficiency. In the field of industrial production, proximity switches can be seen everywhere, including production line detection, stack height detection, liquid level detection and other manufacturing scenarios. At present, the common types of proximity switch are ultrasonic proximity sensor and photoelectric proximity sensor.
Ultrasonic proximity sensor
Ultrasonic proximity sensor can detect any object within 0.025~10m by using echo detection technology and TOF measurement technology. It is compatible with objects of different materials, shapes, colors or concentrations, with excellent accuracy, flexibility, stability and reliability. It can detect solid, liquid, powder and even transparent objects, and its detection performance is not affected by the surface properties of objects. No matter the surface is rough or smooth, clean or dirty, wet or dry, the detection accuracy will not be affected. Its application scope is quite widespread, such as level measurement, height measurement, distance measurement, bottling counting, etc.
photoelectric proximity sensor
Photoelectric proximity sensor uses the object to block or reflect the light beam, and connects the circuit by synchronous circuit to detect the presence of objects. And not just metals, but anything that reflects (or blocks) light can be detected. In the application scenario, the photoelectric proximity switch converts the input current into light signal and emitted it, then the receiver will detect the target object according to the intensity or absence of the light received. It is often used to count the number of motions of a mechanical arm.
In recent years, due to the influence of industrial environment, photoelectric proximity sensors may not be able to fully meet the needs of "Industry 4.0". But the ultrasonic proximity sensor has higher accuracy, stronger flexibility and larger measurement range, which is very suitable for industrial environment. With its relatively low cost advantage, it has been paid more and more attention by the industry.
In the future, with the rapid development of industrial manufacturing, it is certain to drive the rapid growth of the proximity sensor industry. At that time, let's see how the proximity sensor breaks through the first loop of intelligent quality control and increase efficiency for "industry 4.0"!
Audiowell ultrasonic proximity sensor
Audiowell ultrasonic proximity sensor uses the principle of ultrasonic measurement to identify the trajectory of the surrounding target. In industrial production, it can be used for assembly line detection, liquid level monitoring, stack height detection and dimension measurement.