Portable electronic alarm

便携式电声警报器

Abstract

一种便携式电声警报器,它包括话音放大电路和单片机主控警报音源电路,话音放大电路和单片机主控警报音源电路的输出端均连接前置放大电路,前置放大电路的输出端连接功率放大电路,功率放大电路的输出端连接至扬声器;其中,话音放大电路、单片机主控警报音源电路、前置放大电路和功率放大电路均与电源电路相连接。采用上述技术方案的本实用新型,可通过按键处理单元手动发放预先警报、空袭警报、解除警报、灾情警报、消防警报以及根据用户要求的其他警种等;本机扩音;在供电方面,采用交直流不间断供电以及电瓶欠压保护,所以能够便于携带。该警报器具有体积小、重量轻、操作简单、功能多、警种多、移动性强、安全实用等特点。
A portable electronic alarm comprises a voice amplifying circuit and a singlechip main control alarm sound source circuit. The output ends of the voice amplifying circuit and the single chip main control sound source circuit are both connected with a pre-amplification circuit, the output end of which is connected with a power amplifying circuit, the output end of which is connected with a loudspeaker, wherein the voice amplifying circuit, the singlechip main control alarm sound source circuit, the pre-amplification circuit and the power amplifying circuit are all connected with a power circuit. By adopting the technical scheme, the portable electronic alarm can mutually give out pre-alarm, air alarm, white alert, disaster alarm, firefighting alarm and other alarm types according to the requirements of users; the sound can be amplified; and with the respect to sound amplification, the uninterrupted alternating current and direct current power supply and undervoltage protection of a battery are adopted, therefore, the carrying is convenient. The alarm has the characteristics of small volume, light weight, simple operation, multiple functions and alarm types, strong mobility, safety, practicability and the like.

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-103905957-AJuly 02, 2014天津理工大学多功能扩音与报警系统
    CN-104505080-AApril 08, 2015哈尔滨固泰电子有限责任公司Sound production method of automobile horn producing sound through piezoelectric ceramic buzzer