What are the components and functions of discrete sensors?
Discrete sensors generally include photoelectric switches, proximity switches, light barriers, encoders, etc. These are devices often used in automation. They each have their own functions, but they are often used together to become a faster growing team in sensors. . Especially in recent years, the number of discrete sensors has increased dramatically. The application fields have been further expanded.
Discrete sensors have a wide range of applications in the machine tool industry. Discrete sensor products such as photoelectric switches, proximity switches, and gratings have applications. For example, a travel switch is used as a limit switch on the machine tool to achieve overtravel protection of the moving parts of the machine tool, and photoelectric switches and proximity switches are also used to implement some detection, protection, feedback, and status confirmation functions. Gratings are widely used Closed-loop control for CNC system to improve the machining accuracy of CNC machine tools; if the machine tool is required to reach a certain level of safety protection, a safety switch or light curtain must be used.
Because discrete sensors are weak electrical devices, they have many installation positions in mechatronics equipment and systems, small installation spaces, and poor environmental conditions. People pay more attention to performance in addition to product functions and volume. Although the control system has a redundant design, the performance requirements of discrete sensors are still very demanding. Therefore, the performance indicators of the reliability and resistance to harsh environments of discrete sensors are still very important.
Different types and different types of machine tools have different requirements for sensors. Generally speaking, the requirements of the machine tool for the sensor are reliability and anti-interference ability; it can meet the requirements of corresponding accuracy and running speed or response speed; it is convenient to use and maintain, and is suitable for the operating environment of the machine tool. However, it cannot be ignored that as the application range of sensor products increases and machine tool manufacturers continue to put forward new application requirements for machine tools, some sensor products suitable for harsh environments have gradually been favored by users. Experts said: Compared with other industries, the use environment is more severe, and there are influencing factors such as vibration, humidity, dust, oil pollution, etc. Therefore, users want them to have extremely high stability, reliability and economy. Discrete sensor products with characteristics such as corrosion resistance and electromagnetic interference resistance will be more and more widely used in the machine tool industry. "
With the continuous development of network technology, sensors can be connected to industrial networks or even the Internet through certain means, so that the sensors have more functions and stronger adaptability. Expert believes that this is also one of the ways to reduce the probability of interference in harsh environments. At the same time, network interconnection also puts forward several requirements for the development of discrete sensors, such as improving integration, enhancing modular design awareness, and improving standardization.
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