How to choose the angle sensor output signal

The function of the angle sensor is a device or device that converts the rotation angle into an electrical signal. The basic motion forms of objects are translation and rotation. In mechanical position detection and automatic control, since the main power source is the electric motor, most of its motion is mainly based on rotation, so the angle sensor is a very common and important sensor in a wide range of applications.

DWQT angle sensor uses MEMS magneto-sensitive integrated chip as the sensitive element, including integrated Hall device (Hall), anisotropic magnetoresistance (AMR), giant magnetoresistance (GMR), tunnel junction giant magnetoresistance (TMR) and other different mechanisms A series of angle sensors composed of sensitive components. They each have different characteristics and application areas.

How to correctly select the output signal of the angle sensor is one of the problems that the type selector needs to face. DWQT-angle sensor mainly has two forms of analog output and digital output. The analog current output angle sensor generally has the signal form of 4-20mA and 0-20mA. 4~20mA is mainly used for on-site measurement and monitoring of the angle sensor, and the operating conditions of the remote control position, which can usually reach a distance of several hundred meters. The current output angle sensor also has better industrial anti-interference ability. There are 4-20mA dedicated signal input interfaces for various types of industrial programmable controllers. 0-20mA current type angle sensor pays more attention to the accuracy of the starting point of zero measurement.

The DWQT voltage output angle sensor can have 0~3.3V, 0~5V, 0~10V, ±5V, ±10V voltage output signals. It is mainly used in applications where the detection signal is obtained on the spot, the detection distance is short, or the display or measuring instrument is connected. The positive and negative voltage output angle sensor focuses more on the description of the zero position and the left and right reciprocating motion state. 0~10V, ±10V are more often used for sensors connected to PLC programmable controllers.

DWQD angle sensor is an angle sensor with digital output, which is often used with microprocessors (microcontrollers), PLCs, industrial computers, and dedicated controllers. The output form of DWQD angle sensor has binary, decimal, hexadecimal, RS232, RS485, RS422, CAN bus, Gray code and other forms. RS232 is mostly used in industrial control occasions; RS485 output signal can realize remote transmission; RS422 signal has differential 485 signal, which is used in special equipment and large construction machinery. CAN bus is often used in the automotive electronics industry.