Differential anti-interference real-time speedometer and control method based on arduino

Abstract

The invention discloses a differential type anti-strong-interference real time velometer based on Arduino, and a control method thereof. The velometer comprises a singlechip system, a hall sensor module, a filter circuit and a magnetic code disc, wherein the hall sensor module includes a first hall sensor for detecting a rotating speed signal and a second hall sensor for detecting an interference signal; the singlechip system utilizes an Arduino UNO system which is provided with two interrupt input interfaces, and the two interrupt input interfaces are respectively connected with the first hall sensor and the second hall sensor; and one end of the filter circuit is connected with the Arduino UNO system, and the other end of the filter circuit is connected with the hall sensor module. The differential type anti-strong-interference real time velometer based on Arduino utilizes the difference method to process the strong interference from vibration and electromagnetism, wherein the first hall sensor is responsible for measuring the rotating speed in real time and the second hall sensor is responsible for measuring the interference signal from the measurement; and the differential type anti-strong-interference real time velometer based on Arduino utilizes a difference function to process the data measured by the first hall sensor and the second hall sensor so that accurate rotating speed data can be obtained.

Description

technical field [0001] The invention relates to the field of electromechanical control, in particular to an Arduino-based differential anti-strong interference real-time speed detector and a control method, which are suitable for real-time speed measurement of engines with strong interference signals such as high-speed motors and gasoline engines or other equipment. Background technique [0002] During heavy load operation, the speed of the power machine will vary with the load, and the real-time change of the measured speed can reflect the size of the load. The common method is to convert the speed measurement signal into pulses that can be recognized by the single-chip microcomputer, and count the pulses so that Get real-time data on rotational speed. The Hall device has a firm structure, small size, light weight, long life, and easy installation. It is often used to detect pulse signals. When the rotating part rotates, it drives the high-magnetic probe to move, and when ...

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Problems solved by technology

[0005] 1. The former uses a single magnetic steel. During the measurement process, due to the large induction angle, there will be a feedback blind zone, so that the measured data cannot truthfully reflect the actual speed.

[0006] 2. Neither of them has conducted research on the impact of strong interference. When subjected to strong electromagnetic interference and vibration interference, it will cause errors in the data measured by the speedometer

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