A record player convenient for speed measurement

A record player and speed measurement technology, which is applied to mechanical recording, information recording on disk, data recording, etc., can solve problems such as difficulty in modulating the rhythm, lack of a speed measuring device in the record player, and difficulty in controlling the rotational speed of the record, etc., to facilitate industrial processing, Ease of cleaning and mass production

Active Publication Date: 2018-11-20
ZHONGSHAN LEETAC ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional record player does not have a speed measuring device, it is difficult to control the rotational speed of the record, and it is difficult to modulate the perfect rhythm

Method used

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  • A record player convenient for speed measurement
  • A record player convenient for speed measurement
  • A record player convenient for speed measurement

Examples

Experimental program
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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] Such as Figure 1 to Figure 5 As shown, a record player that is convenient for speed measurement is characterized in that it includes a base body 1, and a drive motor assembly 2 and a turntable 3 connected to the drive motor assembly 2 for placing discs are arranged in the base body 1. , a grating 4 is provided on the turntable 3, and an optocoupler 5 corresponding to the grating 4 and used to detect the rotation speed of the turntable 3 is fixed on the base body 1, which is convenient for speed measurement in the present invention. The record player has a device for detecting the rotation speed of the record, which can accurately control the rotation speed of the record according to the needs, so as to modulate wonderful music. The turntable and the grating in the present invention belong to a separate structure, which can be assembled after being pro...

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Abstract

The invention relates to a phonograph convenient for velocity measurement. The phonograph is characterized by including a seat body (1), a driving motor assembly (2) and a rotary disc (3) connected with the driving motor assembly (2) and used for holding a disc are arranged in the seat body (1), a raster (4) is arranged on the rotary disc (3), and an optical coupler (5) corresponding to the raster (4) and for detecting the rotation speed of the rotary disc (3) is fixed on the seat body (1). The phonograph convenient for velocity measurement is provided with a device for detecting the disc rotation speed, and the rotation speed of the disc can be accurately controlled based on the needs, so that beautiful music can be modulated.

Description

【Technical field】 [0001] The invention relates to a record player which is convenient for speed measurement. 【Background technique】 [0002] Another name for a record player is a phonograph. A phonograph is an original playback device. Its sound is stored in an arc-shaped groove that is acoustically carved on the plane of the record. The record is placed on a turntable and rotates under the stylus. The phonograph record can be reproduced in large quantities relatively easily, and the playback time is longer than most cylindrical recording media. Therefore, the phonograph is called one of Edison's greatest inventions. [0003] An optical device composed of a large number of parallel slits of equal width and equal spacing is called a grating, and an optical coupler (abbreviated as OC) is also called an optoelectronic isolator or optocoupler, or optocoupler for short. It is a device that transmits electrical signals with light as the medium. Usually, the emitter (infrared ligh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B3/085G11B19/20
CPCG11B3/08535G11B19/2009
Inventor 邝伟雄
Owner ZHONGSHAN LEETAC ELECTRONICS
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