How much do you know about the cable displacement sensor?
How much do you know about the cable displacement sensor?
Rope displacement sensor is also called rope sensor, rope sensor, rope electronic ruler and rope encoder. Pulling-rope displacement sensor is a delicate structure of linear displacement sensor, which fully combines the advantages of angle sensor and linear displacement sensor, and becomes a sensor with small installation size, compact structure, large measuring stroke and high precision, with the stroke ranging from several hundred millimeters to more than ten meters.
The signal output modes of the cable displacement sensor can be divided into digital signal output and analog signal output. The digital output type can choose incremental rotary encoder, excellent value encoder, etc., the output signal is square wave ABZ signal or Gray code signal, and the analog output type can choose precision potentiometer, Hall encoder, excellent value encoder, etc., and the output signal can be RS485,dp and DP bus. 4-20mA, 0-5V, 0-10V, serial SSI and resistance signal, etc., the maximum stroke can reach 15000mm, and the maximum protection level of IP65 can be achieved in the use environment, and it can be used in a wide temperature environment from-45℃ to+105℃.
The function of the cable displacement sensor is to convert mechanical motion into electrical signals that can be measured, recorded or transmitted. The pull rope displacement sensor is wound by a stretchable stainless steel rope on a threaded hub, which is connected with a precise rotation sensor, which can be an incremental encoder, an excellent (independent) encoder, a mixed or conductive plastic rotary potentiometer, a synchronizer or an resolver.
In operation, the pull rope displacement sensor is installed at a fixed position, and the pull rope is tied to the moving object. The linear motion of the pull rope is aligned with the motion axis of the moving object. When the movement occurs, the rope stretches and contracts. An internal spring ensures that the tension of the pull rope is constant. The threaded hub drives the precision rotation sensor to rotate, and outputs an electrical signal proportional to the moving distance of the pull rope. The displacement, direction or velocity of the moving object can be obtained by measuring the output signal.
Commonly used parameters include measuring stroke, output signal mode, linearity, repeatability, resolution, wire diameter specification, outlet tension, maximum round-trip speed, weight, input resistance, power, working voltage, working temperature, vibration, protection level, etc.
The pull rope displacement sensor is especially suitable for dimension measurement and position control of linear guide rail system, hydraulic cylinder system, testing machine, telescopic system, storage position positioning, pressure machinery, paper-making machinery, textile machinery, metal plate machinery, packaging machinery, printing machinery, horizontal controller, construction machinery and so on, especially suitable for the control of electro-hydraulic servo hydraulic universal testing machine. It can completely replace the grating ruler, can be customized in other applications, and can completely realize low-cost and high-precision measurement.