基于MK7A23P混合脉宽方式调节音量的警报器设计

›› 2010, Vol. 23 ›› Issue (11): 47-50.

基于MK7A23P混合脉宽方式调节音量的警报器设计

金永镐，姜欣欣

(延边大学工学院，吉林延吉 133002)

出版日期:2010-11-15 发布日期:2010-12-23
作者简介:金永镐（1964- ），男，博士，教授。研究方向：智能开关技术及智能变换。姜欣欣（1980- ），女，硕士，助教。研究方向：智能开关技术及智能变换。

Design of an Alarm to Regulate Volume by the Composite Pulse Width Mode Based on MK7A23P

JIN Yong-Gao, JIANG Xin-Xin

(College of Engineering,Yanbian University,Yanji 133002,China)

Online:2010-11-15 Published:2010-12-23

摘要/Abstract

摘要：

提出了一种利用MK7A23P单片机，以混合脉宽方式调节音量的大功率警报器。由于其输出功率大，采用脉宽方式调节音量，但现有的单一脉宽调节方式，改变音量时音色也改变，音量越小音色改变越大。文中在分析了国际通用的各种报警音源基础上，提出了一种用混合脉宽方式调节音量的方法，利用MK7A23P单片机的功能设计了大功率报警器，从而避免音色变化，整机具有电路简单、效率高、可提高产品的竞争力。

关键词: MK7A23P单片机, 警报器, 混合脉宽方式, 音色

Abstract:

A large-power alarm to regulate volume by the composite pulse width mode is introduced,which uses the MK7A23P single chip.The alarm uses pulse width to regulate volume because the output power is large.For the present single pulse width regulated mode,however,with the volume changing,the timber is changed,and the lower the volume is,the larger the timber changes.In this paper,a large-power alarm to regulate volume by the composite pulse width mode based on the strong function of the MK7A23P single chip is presented on the basis of an analysis of the universal alarm system sound source.By the method,timber changing is avoided.The circuit of the whole system is simple and the efficiency is high,which can enhance the competitive power of the products.

Key words: MK7A23P single chip, alarm, composite pulse width mode, timber

中图分类号:

TN78

金永镐, 姜欣欣. 基于MK7A23P混合脉宽方式调节音量的警报器设计[J]. , 2010, 23(11): 47-50.

JIN Yong-Gao, JIANG Xin-Xin. Design of an Alarm to Regulate Volume by the Composite Pulse Width Mode Based on MK7A23P[J]. , 2010, 23(11): 47-50.