Proximity sensors are mainly used to detect the displacement of objects and are widely used in aerospace, aerospace technology and industrial production. In daily life, such as hotels, restaurants, garages, automatic doors, automatic hot air blowers have applications. In terms of security and theft, such as data files, accounting, finance, museums, treasury, etc., it is usually equipped with anti-theft devices composed of various proximity switches. In measurement technology, measurement of length and position; in control technology, such as measurement and control of displacement, velocity and acceleration, users also have a large number of proximity switches.
1 Since the detection can be performed in a non-contact manner, the object to be inspected is not worn or damaged.
2 Due to the use of the contactless output method, the life extension (except for the magnetic type) uses the semiconductor output, which has no effect on the life of the contact.
3 Unlike the light detection method, it is suitable for use in water and oil environments, and is almost unaffected by the stains, oil, water, etc. of the object to be detected. In addition, it also includes Teflon shell and good drug resistant products.
4 High-speed response compared to contact switches
5 can correspond to a wide range of temperatures
6 Undetected by the color of the detected object, the physical properties of the detected object are detected, so it is hardly affected by the surface color, etc.
7 Unlike the contact type, the influence of the ambient temperature, surrounding objects, and similar sensors, including the inductive type and the electrostatic capacity type, affect each other. Therefore, for the setting of the sensor, mutual interference needs to be considered. In addition, in the inductive type, it is necessary to consider the influence of the surrounding metal, and in the electrostatic capacity type, it is necessary to consider the influence of surrounding objects.