Myopia prevention device

Myopia prevention device

The utility model discloses a myopia prevention device which comprises a shell, a swing mechanism, a control mainboard, a distance sensor, a timing displayer and a warning lamp, an installation inner cavity is formed in the shell, the swing mechanism is connected to the installation inner cavity, th...

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Hauptverfasser: CHEN ZONGMING, FENG WENYING, CHEN SHUANGDONG, QIU DONGNI, YIN MINGCHANG, CAO HONGMING
Format: Patent
Sprache:chi ; eng
Schlagworte:
ALARM SYSTEMS
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
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creator CHEN ZONGMING
FENG WENYING
CHEN SHUANGDONG
QIU DONGNI
YIN MINGCHANG
CAO HONGMING
description The utility model discloses a myopia prevention device which comprises a shell, a swing mechanism, a control mainboard, a distance sensor, a timing displayer and a warning lamp, an installation inner cavity is formed in the shell, the swing mechanism is connected to the installation inner cavity, the distance sensor is movably connected to the swing mechanism, and the control mainboard is connected to the control mainboard. The swing mechanism enables the distance sensor to swing within a first angle range in the vertical direction of the shell; the control main board is connected to the interior of the mounting inner cavity, the distance sensor is electrically connected with the control main board, and the control main board is electrically connected with the swing mechanism; the timing display and the warning lamp are both connected to the shell, and the control main board is electrically connected with the timing display and the warning lamp. According to the technical scheme, the prevention efficiency can
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language chi ; eng
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subjects ALARM SYSTEMS
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
title Myopia prevention device
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