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an electronic siren

An alarm, electronic technology, applied in the field of electronic information, can solve problems such as no solution

Active Publication Date: 2018-08-31
温州奥乐安全器材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there is no simple and better solution, it is also a kind of helplessness for the designers and users of the national standard GB8108 and the demanding automotive electronic siren

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0013] Embodiment one, in the electronic alarm, the preamplifier circuit, the MCU test key circuit and the MCU indicator circuit, the MCU control amplifier circuit and the MCU alarm tone generation circuit, the digital electronic potentiometer output volume adjustment and amplification circuit, the power amplifier, and the power conversion circuit , police light control circuit and other parts form the host, the MIC microphone is drawn from the host, and the electret MIC circuit and the MIC microphone button circuit are installed in the MIC microphone.

Embodiment approach 2

[0014] Embodiment 2: In the electronic siren, the MCU control amplifier circuit, the MCU alarm tone generating circuit, the MCU communication circuit, the digital electronic potentiometer output volume adjustment and amplifier circuit, the power amplifier, the power conversion circuit, the alarm light control circuit and other parts form the host computer, The electret MIC circuit, MIC microphone button circuit, preamplifier circuit, MCU test key circuit, MCU indicator circuit, MCU communication circuit and other parts in the electronic siren form the control handle. The control handle can control the work of the host, and the control handle can also be used as a MIC microphone, which can be used as an electronic siren MIC to shout, such as figure 2 .

Embodiment approach 3

[0015] Embodiment 3, the MCU alarm tone generation circuit, the MCU communication circuit, the digital electronic potentiometer output volume adjustment and amplification circuit, the power amplifier, the power conversion circuit, the warning light control circuit and other parts in the electronic siren form the host computer, and the electronic siren resides in Pole body MIC circuit and MIC microphone button circuit, preamplifier circuit and mcu control amplifier circuit, mcu test key circuit and mcu indicator circuit, mcu communication circuit and other parts constitute the control handle. The control handle can not only control the work of the host, but also can be used as a MIC microphone, and can be used as an electronic siren MIC to shout.

[0016] There are also multiple split implementations, but no matter which implementation, the mcu communication circuit, digital electronic potentiometer output volume adjustment circuit, signal amplification circuit and other parts m...

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PUM

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Abstract

The invention relates to the technical field of electronic information, and more particularly to a vehicle electronic alarm. Through adoption of the electronic alarm, a microprogrammed control unit (mcu) can be used to control a digital electronic potentiometer of the electronic alarm to adjust an output volume, store and memory a control volume of the digital electronic potentiometer. When the digital electronic potentiometer adjusts the output volume at a position less easy to howling, the electronic alarm is less likely to howling, and an amplifier works in a normal condition. When the digital electronic potentiometer adjusts the output volume at a position easy to howling, the mcu and a signal voltage detection circuit cooperate with each other so as to control a complementary metal-oxide-semiconductor (CMOS) analog switch to switch and control signal positive and negative inputs of the amplifier, and the amplifier works in an extension state controlled by the mcu. When the mcu controls the electronic potentiometer to adjust to increase the output volume, the analog switch speeds up to switch, wherein the CMOS analog switch switches within 1-0.1 second. When the MIC outputs a large voice volume, the electronic alarm is less likely to howling, and the amplifier of the electronic alarm works in the extension state controlled by the mcu.

Description

technical field [0001] The invention relates to the technical field of electronic information, in particular to an electronic siren for vehicles. Background technique [0002] At present, the electronic alarms used in vehicles all have the function of MIC shouting. The alarm tone of the electronic siren is generated by the mcu, and is output by the speaker through the volume adjustment amplifier and the power amplifier. The MIC calling function is realized by the MIC circuit, preamplifier, volume adjustment amplifier, power amplifier, and speaker output. It is a traditional audio amplifier. The shouting function of the electronic siren is often used to send guiding sentences, warning sentences, and command sentences, and the voice is required to be loud and powerful. In the words of the user, the sound should be loud and not like a bird. And the loudspeaker installation of existing vehicle electronic siren has two kinds, and a kind of is to be installed in the warning lig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R27/00
Inventor 包钢
Owner 温州奥乐安全器材有限公司