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Linear potentiometer sensor

Aug 4th, 2022 at 11:20   Automobiles   Sahāranpur   2 views
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A position sensor is a sensor that detects an object's position. A position sensor may indicate the absolute position of the object (its location) or its relative position (displacement) in terms of linear travel, rotational angle or three-dimensional space. Different from the displacement sensor, the position sensor has two types: contact type and proximity type. The contacts of the contact sensor are moved by the contact and extrusion of two objects, and the common ones are the travel switch and the two-dimensional matrix position sensor. The travel switch has simple structure, reliable action and low price. When an object is in motion and encounters the travel switch, its internal contacts will act to complete the control. For example, if travel switches are installed at both ends of the X, Y, and Z axes of the machining center, the movement range can be controlled. The two-dimensional matrix position sensor is installed on the inside of the robotic palm to detect the contact position between itself and an object. Proximity switch refers to a switch that can send an "action" signal when an object is close to a set distance, and it does not need to be in direct contact with the object. There are many types of proximity switches, mainly electromagnetic type, photoelectric type, differential transformer type, eddy current type, capacitive type, reed switch, Hall type, etc. The applications of proximity switches on CNC machine tools are mainly tool rest tool selection control, table travel control, oil cylinder and cylinder piston travel control, etc. Also, there are potentiometer position sensorLvdt position sensor and so on.

Potentiometer, a common electromechanical component, is widely used in various electrical and electronic equipment. A potentiometer sensor is a sensor that converts mechanical displacement through a potentiometer into a resistance or voltage output that is a function of it. According to their different structural forms, they can be divided into wire-wound type, thin-film type and photoelectric type. According to the characteristics of input and output, it can be divided into linear potentiometer sensor and nonlinear potentiometer sensor. Most commonly used single-turn wire-wound potentiometers. Potentiometer-type resistance sensors are generally composed of resistance elements, skeletons and brushes. The movement of the brushes relative to the resistive element can be linear, rotational or helical. When the measured changes, the brush contacts move on the resistive element, and the resistance value between the contact and the resistive element will change, and the linear conversion between the displacement and the resistance can be realized. The resistive sensor is a kind of electrical parameter sensor that has been used earlier. It has a wide variety of applications and is widely used. After measuring the circuit, the changes being measured are reflected. The potentiometric sensor has a simple structure, good linearity and stability, and can form a force measurement, pressure measurement, weighing, displacement measurement, acceleration measurement, torque measurement, temperature measurement and other detection systems with the corresponding measurement circuit. It has become one of the indispensable means of production process detection and realization of production automation.

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