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安全帽报警器是装在安全帽内的一种报警器,戴帽人一旦接近高压(10～220kV)时,便能自动发出报警。它适合工矿企业、供配电等单位,供电工室外带电操作、检修安装线路时确保安全之用。该装置体积小、线路简单、实用性强,具有报警灵敏,声音响亮,安装使用方便、调试简单等优点,并适合业余制作。1.电路工作原理电气原理图如图所示。它由语言集成电路 IC、晶体管 V_1、V_2,电阻 R_1、R_2、蜂鸣器 HA、电池 GB 等元件组成。图中虚线部分为报警器控制导线,安装在
The helmet alarm is a kind of alarm installed in the helmet. When the helmet is close to the high pressure (10 ~ 220kV), the helmet can automatically give an alarm. It is suitable for industrial and mining enterprises, power distribution and other units for the electrician outdoor charged operation, maintenance and installation of lines to ensure safety. The utility model has the advantages of small volume, simple circuit and strong practicability, and has the advantages of alarm sensitivity, loud sound, convenient installation and simple debugging, and is suitable for amateur production. 1. circuit works electrical schematic diagram as shown. It consists of language integrated circuit IC, transistors V_1, V_2, resistors R_1, R_2, buzzer HA, battery GB and other components. Dotted part of the figure for the alarm control wire, installed in