Motor rotating direction and rotating speed detection device and method

A rotational speed detection and rotational speed technology, applied in measuring devices, electromechanical devices, linear/angular velocity measurement, etc., can solve the problems of measuring devices being easily affected by the external electromagnetic environment, limited application environment, inaccurate measurement results, etc., to improve the applicability , the effect of removing environmental restrictions and accurate measurement results
CN104634993AActive Publication Date: 2015-05-20GRG BAKING EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GRG BAKING EQUIP CO LTD
Publication Date
2015-05-20

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Abstract

The embodiment of the invention discloses a motor rotating direction and rotating speed detection device, which is used for solving the problems that a traditional measurement device is always affected by an external electromagnetic environment, measurement results are inaccurate and an application environment is restricted. The method of the embodiment of the invention comprises a tested motor, a coded disc, a photoelectric sensor, a shaping filtering circuit and a processor, wherein the coded disc is installed on the rotor of the tested motor, and therefore, the coded disc is driven by the tested motor to synchronously rotate; the coded disc is divided into N areas by taking a center as a base point, wherein the N areas are successively arranged according to transparency, and N is greater than or equal to 3; the transmitting terminal and the receiving terminal of the photoelectric sensor are oppositely arranged, a light path between the transmitting terminal and the receiving terminal of the photoelectric sensor passes through the coded disc; the photoelectric sensor, the shaping filtering circuit and the processor are successively electrically connected. The embodiment of the invention also provides a motor rotating direction and rotating speed detection method.
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Description

technical field

[0001] The invention relates to the technical field of motor detection, in particular to a device and method for detecting a motor steering speed. Background technique

[0002] Motors have been widely used in actuators. As a key drive component, their performance directly determines the control effect of the entire actuator.

[0003] At present, the method of measuring the steering and rotational speed of the motor is to install a rotary encoder on the coaxial shaft of the motor and process the Hall pulse signal output by the encoder. However, the structure of the encoder assembly is precise, and it is easily affected by the external electromagnetic environment when the Hall signal is processed, which makes the measurement result inaccurate, and its use environment is greatly restricted. For the actuator driven by the motor, the rotation direction and speed of the motor are extremely important parameters for motor control, and the detection results directly ...

Claims

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