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Infrared ray based high accuracy tachometer

An infrared, high-precision technology, applied in the direction of devices using optical methods, can solve problems such as errors and the influence of rotating shaft speed inspection results, and achieve the effects of convenient operation, simple structure, and improved accuracy

Inactive Publication Date: 2014-10-15
马晓权
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the motor or the rotating shaft will have an acceleration when it starts to rotate, which will affect the inspection result of the rotating shaft speed during the detection, resulting in a large error

Method used

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  • Infrared ray based high accuracy tachometer

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Embodiment Construction

[0020] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0021] The present invention provides a high-precision tachometer based on infrared rays for existing deficiencies, such as figure 2 shown, including:

[0022] An infrared emitter 1 fixed on the rotating shaft for emitting infrared signals;

[0023] The infrared receiver 2 is used to receive the infrared signal sent by the infrared transmitter;

[0024] A time limiting unit 6, configured to output a time control signal;

[0025] The switch unit 4 is used to start the infrared receiver and simultaneously control the time limiting unit to output the time control signal;

[0026] The data detection unit 3 is used to detect the number of times the infrared receiver receives the infrared signal;

[0027] The central processing unit 5 is used to receive t...

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Abstract

The invention relates to the technical field of industrial inspection, in particular to an infrared ray based high accuracy tachometer. The infrared based high accuracy tachometer comprises an infrared emitter fixed onto a rotary shaft for transmitting an infrared signal, an infrared receiver for receiving the infrared signal emitted by the infrared emitter, a time limit unit for outputting a timing control signal; a switch unit for starting the infrared receiver and simultaneously controlling the time limit unit to output a time control signal, a data detection unit for detecting the number of infrared signal receiving of the infrared receiver, a central processor for receiving the timing control signal, closing the infrared receiver when the detection time is ended, receiving the number of the infrared signal receiving of the infrared receiver, which is detected by the data detection unit, and processing the set time and the number of the infrared signal receiving to obtain a data signal of the rotation speed, and a display unit for receiving the data information of the rotation speed, which is obtained by the central processor, and displaying the data of the rotation speed.

Description

technical field [0001] The invention relates to the technical field of industrial detection, in particular to an infrared-based high-precision tachometer. Background technique [0002] The tachometer is one of the necessary instruments in the mechanical industry, which is used to measure the rotational speed, linear speed or frequency of the motor. The pointer indication conforms to the traditional visual recognition habit, and is convenient for computer remote processing and networking requirements. At present, the existing tachometer generally reads the received digital pulse signal (sent by the sensor) into the counting port of the cpu after processing, calculates the speed and the corresponding position of the pointer through the software, and then passes through the control port of the cpu, After amplification, the stepper motor is driven to rotate in positive and negative directions, and the corresponding speed value is indicated (the pointer is directly installed on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P3/36
Inventor 马晓权
Owner 马晓权
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