• Position sensor is a sensor that can sense the position of an object under test and convert it into a usable output signal. Its working principle is based on different physical phenomena and technologies, such as electromagnetic induction, Hall effect, and photoelectric effect. When the position of the object under test changes, the sensor will generate an electrical signal, an optical signal, or other forms of signal output according to the corresponding physical principle to reflect the position information of the object.

• Classification

  • Contact - type Position Sensor
    The contacts of this type of sensor operate when two objects come into contact and press against each other. A common example is a limit switch, which has a simple structure, reliable operation, and a low price. For example, limit switches are installed at both ends of the X, Y, and Z - axes of a machining center to control the movement range. A two - dimensional matrix - type position sensor is installed on the inside of a robotic hand to detect the contact position between itself and an object.

  • Proximity - type Position Sensor
    This refers to a switch that can send an "action" signal when an object approaches it to a set distance without direct contact with the object. There are mainly electromagnetic, photoelectric, differential transformer, eddy - current, capacitive, reed - switch, and Hall - type sensors. For example, in a Hall - sensor, a small magnet is fixed on a moving part. When the part approaches the Hall - element, the Hall - phenomenon occurs, and it can be determined whether the object is in position.

• Application Areas
  Position sensors are widely used in industrial automation, automotive, robotics, aerospace, medical devices, and other fields. In industrial automation, they are used for position detection and control of equipment such as machine tools and production lines. In the automotive industry, crankshaft position sensors and camshaft position sensors are used to monitor the working state of the engine. In robotics, they are used to determine the position and movement trajectory of each joint of a robot. In the aerospace field, they are used for attitude control and navigation of aircraft, satellites, and other flying vehicles.

Introduction of Key International and Domestic Brands

• International Brands

  • Bosch (Germany)
    Bosch is a well - known German brand with profound technological accumulation and extensive influence in automotive electronics and industrial technology. Its position - sensor products are known for high precision, high reliability, and advanced technology and are widely used in automotive and industrial - automation fields. For example, in the automotive field, Bosch's crankshaft position sensors and camshaft position sensors provide important position information for the precise control of the engine.

  • Honeywell (United States)
    Honeywell is a multinational American company with rich experience and strong R & D capabilities in sensor technology. Its position - sensor products cover a variety of types and application scenarios and are widely used in aerospace and industrial - control fields. Honeywell's position sensors have the advantages of high precision, high stability, and good environmental adaptability.

  • Omron (Japan)
    Omron is a Japanese manufacturer of automation - control and electronic equipment. Its position - sensor products have a relatively high market share in the field of industrial automation. Omron's position sensors have the characteristics of fast response speed, high precision, and strong reliability and can meet the requirements of various complex industrial environments.

• Domestic Brands

  • Zhejiang HETRON TECHNOLOGY CO., LTD
    It is a well - known domestic enterprise in the field of industrial automation and also has a certain technological strength and market share in the field of position sensors. The company focuses on the R & D, production, and sales of industrial - automation products, and its position - sensor products are widely used in CNC machine tools, robots, and other fields.

  • SENSOR - TECH (Shanghai) CO., LTD
    It is a domestic professional automotive - sensor - chip supplier and also has strong technological R & D capabilities and market competitiveness in the field of position sensors. Its position - sensor products are mainly used in automotive - electronics fields and provide important technical support for the intelligence and automation of automobiles.

  • MEASUREMENT SPECIALITIES (CHENGDU) CO., LTD
    It has a certain reputation in the domestic sensor field, and its position - sensor products are widely used in automotive - electronics and industrial - automation fields. The company focuses on product R & D and innovation and continuously launches position - sensor products