KR950014435A - Buzzer driving circuit - Google Patents

Buzzer driving circuit Download PDF

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Publication number
KR950014435A
KR950014435A KR1019930023689A KR930023689A KR950014435A KR 950014435 A KR950014435 A KR 950014435A KR 1019930023689 A KR1019930023689 A KR 1019930023689A KR 930023689 A KR930023689 A KR 930023689A KR 950014435 A KR950014435 A KR 950014435A
Authority
KR
South Korea
Prior art keywords
buzzer
sound
buzzer driving
driving circuit
frequency
Prior art date
Application number
KR1019930023689A
Other languages
Korean (ko)
Other versions
KR100239342B1 (en
Inventor
백승택
Original Assignee
이헌조
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이헌조, 엘지전자 주식회사 filed Critical 이헌조
Priority to KR1019930023689A priority Critical patent/KR100239342B1/en
Publication of KR950014435A publication Critical patent/KR950014435A/en
Application granted granted Critical
Publication of KR100239342B1 publication Critical patent/KR100239342B1/en

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B21/00—Systems involving sampling of the variable controlled
    • G05B21/02—Systems involving sampling of the variable controlled electric

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

본 발명은 부저 구동회로에 관한 것으로, 종래에는 주파수특성을 이용하여 부저음을 발생할 경우 주파수에 따라 주파수이득이 틀려 음계에 따라 소리의 크기가 동일하지 않고 서로 틀리게 되는 문제점이 있었다. 따라서 종래의 문제점을 해결하기 위하여 본 발명은 부저구동전압을 마이크로컴퓨터의 디지탈/아날로그변환단자를 이용하여 가변제어하여 음계에 따른 부저주파수 특성이득(dB)을 일정하게 제어하여 음의 높낮이(음량)를 일정하게 유지하도록 하여 청각적으로 다른 멜로디음을 인지할 수 있도록 한다.The present invention relates to a buzzer driving circuit, and in the related art, when a buzzer sound is generated using a frequency characteristic, a frequency gain is different according to frequency, and thus the volume of sound is not the same according to a scale, and thus there is a problem of being different from each other. Therefore, in order to solve the conventional problems, the present invention variably controls the buzzer driving voltage using a digital / analog conversion terminal of a microcomputer to control the buzzer frequency characteristic gain (dB) according to the scale to control the height of the sound (volume). Keep it constant so you can recognize different melodies in the auditory sense.

Description

부저 구동회로Buzzer driving circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제7도는 본 발명의 부저 구동회로도.7 is a buzzer driving circuit diagram of the present invention.

제8도는 제7도에 있어서, 마이크로컴퓨터의 D/A변환단자를 통해 출력되는 전압레벨 설명도.FIG. 8 is a diagram illustrating voltage levels output through the D / A conversion terminal of the microcomputer in FIG.

제9도는 제7도에 있어서, 마이크로컴퓨터의 D/A출력에 따른 부저구동전압 변화설명도.9 is an explanatory diagram of a change in buzzer driving voltage according to the D / A output of the microcomputer in FIG.

제10도는 본 발명 부저음 파형도.10 is a buzzer waveform diagram of the present invention.

제11도는 부저 주파수특성 이득표.11 is a buzzer frequency characteristic gain table.

제12도는 본 발명의 부저구동 흐름도.12 is a buzzer driving flowchart of the present invention.

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

11 : 마이크로컴퓨터 12 : 주파수발진 부저구동부11: microcomputer 12: frequency oscillation buzzer driver

13 : 전압가변부 14 : 부저13: voltage variable part 14: buzzer

TR1, TR2 : 트랜지스터TR1, TR2: Transistor

Claims (1)

출력되는 부저구동전압을 디지탈/아날로그변환단자(D/A)를 이용하여 제어하는 마이크로컴퓨터(11)와, 상기 마이크로컴퓨터(11)로 부터 출력되는 전압에 따라 부저(14)를 구동시켜 음을 발생케하는 주파수발진 부저구동부(12)와, 상기 부저(14)의 전원을 공급하고 부저구동 주파수특성에 따라 이득을 조절하여 에코음을 발생토록 하는 전압가변부(13)로 구성된 부저 구동회로.The microcomputer 11 for controlling the output buzzer driving voltage using the digital / analog conversion terminal (D / A) and the buzzer 14 are driven in accordance with the voltage output from the microcomputer 11 to generate sound. A buzzer driving circuit comprising a frequency oscillating buzzer driver 12 for generating a voltage and a voltage variable part 13 for supplying power to the buzzer 14 and adjusting a gain according to a buzzer driving frequency characteristic to generate an echo sound. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930023689A 1993-11-09 1993-11-09 Buzzer operation circuit KR100239342B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930023689A KR100239342B1 (en) 1993-11-09 1993-11-09 Buzzer operation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930023689A KR100239342B1 (en) 1993-11-09 1993-11-09 Buzzer operation circuit

Publications (2)

Publication Number Publication Date
KR950014435A true KR950014435A (en) 1995-06-16
KR100239342B1 KR100239342B1 (en) 2000-01-15

Family

ID=19367618

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930023689A KR100239342B1 (en) 1993-11-09 1993-11-09 Buzzer operation circuit

Country Status (1)

Country Link
KR (1) KR100239342B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100812363B1 (en) * 2006-10-13 2008-03-11 위니아만도 주식회사 Apparatus and method for controlling buzzer output of kimchi refrigerator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100812363B1 (en) * 2006-10-13 2008-03-11 위니아만도 주식회사 Apparatus and method for controlling buzzer output of kimchi refrigerator

Also Published As

Publication number Publication date
KR100239342B1 (en) 2000-01-15

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