I. Advantages and disadvantages of inductive sensors
The main advantages of inductive sensors are:
1. Simple and reliable structure;
2. High sensitivity, with a maximum resolution of 0.1μm;
3. High measurement accuracy, with output linearity reaching ±0.1%;
4. It has a large output power, and in some cases it can be directly connected to a secondary instrument without amplification.
The disadvantages of inductive sensors are:
1. The sensor itself has a low frequency response, making it unsuitable for rapid dynamic measurements;
2. High stability requirements are placed on the frequency and amplitude of the excitation power supply;
3. The resolution of a sensor is related to its measurement range. A larger measurement range results in lower resolution, and vice versa.
II. Requirements for Inductive Sensor Products
1. Attenuation of detection distance. The slip is made of iron, which is suitable for inductive sensors; however, the size of the slip being measured is slightly smaller than the size of the standard object being measured (the standard object size is 3 times the rated detection distance, and in this application, the standard size should be 120*120mm), which will result in some attenuation.
2. On-site anti-interference capability. This is a crucial issue. Ordinary inductive sensors are easily interfered with by motors or frequency converters. Many technicians only select sensors with strong electromagnetic interference resistance for applications in such locations. However, in automotive manufacturing workshops, the factory is large, and on-site technicians are accustomed to communicating via walkie-talkies. Especially when talking on walkie-talkies while walking, they may inadvertently approach the sensor, causing temporary malfunction.
3. Installation: With the widespread adoption of inductive sensors, their electrical performance has improved, and their mechanical design has become increasingly user-friendly. This aims to maximize ease of installation, reducing the stock of numerous similar products and minimizing installation and maintenance time.
4. Ensuring Stable Operation. During use in the vehicle factory, any corrosion from oil or dust must be prevented. Furthermore, vibration is a constant feature as the skid passes over the track; therefore, excellent vibration resistance is also crucial.
