A Digital Angle Transmitter with Limit Switch

Abstract

The invention relates to a digital angular position transmitter with a limit switch. The digital angular position transmitter with the limit switch is characterized by comprising a detection part, a control part and a mechanical limit unit, wherein the detection part adopts a digital potentiometer, and the digital potentiometer serves as a device for transforming a mechanical angle to an electric signal; the control part comprises a DC / DC power converter, a microprocessor, a signal isolation circuit, a digital-to-analog conversion circuit and a current amplifying circuit; and the mechanical limit unit triggers the limit switch at a switching position and outputs a corresponding switching signal, and the current amplifying circuit outputs a feedback current value. The digital angular position transmitter is digital type, adapts to the development and application of the industrial field intelligent technology, is easy to process and transform signals, is simple in operation, easy to debug in the field and wide in application range, adopts a mechatronic design, comprises the mechanical limit device, and enhances reliability of the technology.

Description

technical field [0001] The invention belongs to the technical fields of mechatronics and sensor measurement, in particular to a digital angle transmitter with a limit switch and an adjustable measuring angle range. Background technique [0002] The transmitter is one of the important basic automation equipment in the industrial process, which mainly completes the measurement and conversion processing of physical quantities, chemical quantities and other information. The angle transmitter is a sensor used to detect the rotation angle and output a standardized signal. It is suitable for various places where the rotation angle of an object needs to be measured. It is mainly used in water conservancy, metallurgy, chemical industry, power station, machinery and other industries. [0003] Angle position transmitters are mainly divided into analog type and digital type according to their processing of angle signals; according to their output classification, they are mainly divided ...

AI Technical Summary

Problems solved by technology

[0004] Analog angle transmitters use analog devices for angle signal processing, and the devices that convert angles into electrical signals use sampling capacitive sensors, single-turn variable resistors, differential transformer sensors, etc., which have the following disadvantages: vulnerable to external Environmental influences, such as temperature and vibration, make the output current signal jitter; due to the diversity of the measured angle range, the product needs to be adjusted before each use, and the operation process is not easy; a pair of signal lines can only correspond to one current signal , resulting in a large number of on-site signal lines

The digital angle transmitter uses a microprocessor to process the collected angle signals. The shortcomings of the existing digital angle transmitters are as follows: in the process of product debugging, use the programming line to set the angle range Or the direction of rotation, the operation is cumbersome

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