Piano key displacement detection device

A detection device and displacement detection technology, applied in the direction of measuring devices, optical devices, signal transmission systems, etc., can solve the problems of inability to effectively detect the strength of black piano keys, and the inability to quantitatively detect the displacement of black piano keys, etc., to achieve good structural strength, The effect of shrinking the volume

Inactive Publication Date: 2017-07-14
上海天域知音艺术有限公司
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Problems solved by technology

However, due to the rigid PCB hard board used in the prior art, the through-beam infrared photoelectric device is fixed, so for the black key, it can only be detected when the displ

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  • Piano key displacement detection device
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[0024] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the protection scope of the present invention.

[0026] It should be noted that the terms "first" a...

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Abstract

The invention relates to a piano key displacement detection device. The piano key displacement detection device comprises an installation support arranged on a piano keyboard; the lower surface of the installation support is provided with a flexible printed circuit board; the flexible printed circuit board is provided with a plurality of optical detection units, and the optical detection units are arranged to be right above piano keys, and are used for detecting displacement of the piano keys. According to the piano key displacement detection device, a three-layer composite mechanical structure is adopted; the piano key displacement detection device is provided with the flexible printed circuit board, so that the optical detection units can be arranged to be close to the piano keys, and the size of the whole piano key displacement detection device is reduced.

Description

technical field [0001] The invention belongs to the technical field of piano detection, in particular to a piano key displacement detection device. Background technique [0002] In many scenarios, it is necessary to detect the displacement of the piano keys, such as the learning and practice process of the piano, the production test process of the piano, the scene of automatic and joint performance, etc. Existing detection methods use PCB rigid boards and simple structural components to achieve the detection purpose, but the detection device using this method is bulky, and it is difficult to miniaturize the detection equipment. [0003] In the prior art, the detection device for the action of the piano keyboard includes a through-beam infrared photoelectric device, which is arranged on both sides of the black key. When the black key is pressed, the light-emitting tube of the through-beam infrared photoelectric device emits The infrared light can enter the receiving tube of ...

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Application Information

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IPC IPC(8): G08C23/04G01B11/02
CPCG08C23/04G01B11/02
Inventor 倪泽峰乔木
Owner 上海天域知音艺术有限公司
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