CN201037907Y

CN201037907Y - Trumpet control device capable of changing sound volume

Info

Publication number: CN201037907Y
Application number: CNU2007201417224U
Authority: CN
Inventors: 田文杰; 薛伟
Original assignee: Beijing Union University
Current assignee: Beijing Union University
Priority date: 2007-03-26
Filing date: 2007-03-26
Publication date: 2008-03-19
Anticipated expiration: 2017-03-26

Abstract

The utility model relates to a trumpet control device which can change volume. The device is a singlechip control system arranged between a vehicle trumpet button and two groups of trumpets. The original trumpet button on the vehicle can be used for controlling respective connection of two groups of trumpets as required to send out sound with strong volume or weak volume. The utility model can be arranged on various vehicles conveniently and reduces city noise pollution, meanwhile, the issue of volume lacking of the vehicle trumpet is solved.

Description

Can change the horn control device of volume

Technical field

The utility model relates to a kind of horn control device that changes volume, this device is a kind of single-chip computer control system that is installed between car horn button and the two groups of loudspeaker, can control two groups of loudspeaker with original horn switch button on the automobile and connect work respectively on demand, send the sound of strong or weak two kinds of volumes.

Background technology

Loudspeaker major part on the automobile all is single volume at present, uses volume bigger than normal in the city, forms noise pollution; Same loudspeaker use on suburb or highway feels that again volume is less than normal, and especially when desire surpassed full-sized car, common volume front truck driver almost can't hear, and traffic hazard takes place easily.The utility model can be controlled two kinds of strong, weak different loudspeaker and connect work respectively on demand, addresses this problem.

Summary of the invention

The purpose of this utility model is to propose a kind of horn control device that can change volume cheaply, cooperate forte and the common monotone horn of off beat more than two or two, can on various automobiles, install easily, be convenient to promote the use of, solve city noise pollution and the car horn problem of volume deficiency sometimes.

The utility model is a kind of horn control device that changes volume, form by Single Chip Microcomputer (SCM) system, by detecting driver's use-pattern different to horn button, from time differentiation judgement driver's the intention and the loudspeaker of connection off beat amount or forte amount, to reach the purpose that changes loudspeaker volume or tone color combination; Single Chip Microcomputer (SCM) system is made up of photoelectrical coupler, single-chip microcomputer, output buffered gate, relay.

The input end of photoelectrical coupler connects the horn button on the automobile, and output terminal connects input of single chip.

The output buffered gate is subjected to the control of single-chip microcomputer output port, and reverse rear drive relay, the other end connection+12V power supply of relay, the normally opened contact of relay connect respectively+the off beat amount on 12V power supply and the automobile, two groups of loudspeaker of forte amount.

The output terminal of single-chip microcomputer and photoelectronic coupler is powered by a three terminal regulator.

The utility model is a kind ofly can discern the once device of institute's duration of the every connection of horn button, by detecting driver's use-pattern different to horn button, Single Chip Microcomputer (SCM) system is from time differentiation judgement driver's the intention and the loudspeaker of connection off beat amount or forte amount, to reach the purpose that changes loudspeaker volume or tone color combination.The level of computer program control output end mouth, the level that off beat amount loudspeaker and which the connection work of forte amount loudspeaker are exported by the single-chip microcomputer pin is controlled, and single-chip microcomputer will keep output reference mark at this moment flat constant, change up to input port state.

Input of single chip detects the state of horn switch button, when horn button is pressed, the input port current potential is by high step-down, export the level that control small volume loudspeaker connect this moment and maintain, when the time that horn button is pressed surpasses 0.3 second, program comprehension attempts to increase volume for the driver, so the small volume loudspeaker are turned off, connect big volume loudspeaker simultaneously and continues to remain to horn button and be released.

Though when the time that presses the button not above 0.3 second, but press the horn button secondary continuously, and when interlude was less than 0.5 second between the secondary, also will be considered to the driver and want to use big volume loudspeaker, then program will be turn-offed the loudspeaker of small volume when for the second time pressing horn button, export the turn-on level of big volume loudspeaker, be released up to horn button.

The sort of method no matter, as long as caused volume change from small to large, use all will be the loudspeaker work of big volume continuously afterwards, press horn button up to certain and surpass for 1 second with the last interval time that discharges horn button, and program just can be recovered the work of small volume loudspeaker.Beneficial effect

The utility model has been finished the judgement which kind of loudspeaker is driver's desire use with simple time interval detection method, short in the loudspeaker that then use small volume, long by or short in continuously the loudspeaker that then use big volume, change the connection of different loudspeaker easily and flexibly, reduce the city automobile noise pollution effectively, improved the traffic safety of suburb and highway.The utility model can be equipped existing automobile at low cost, is convenient to promote.

Description of drawings

Fig. 1 is circuit theory diagrams of the present utility model.

Fig. 2 is a main program flow chart of the present utility model.

Embodiment

Function model machine of the present utility model is finished, and can realize the function of hardware circuit smoothly with reference to accompanying drawing.Single-chip microcomputer wherein uses the chip of any model to be competent at, and that adopt in the function model machine of the present utility model is AT89C2051.The relay of output control usefulness should select the contact working current greater than 20A's.

Claims

1. horn control device that can change volume, form by Single Chip Microcomputer (SCM) system, by detecting driver's use-pattern different to horn button, distinguish the loudspeaker of judgement driver's intention and connection off beat amount or forte amount from the time, to reach the purpose that changes loudspeaker volume or tone color combination, it is characterized in that: described Single Chip Microcomputer (SCM) system is made up of photoelectrical coupler, single-chip microcomputer, output buffered gate, relay; The input end of photoelectrical coupler connects the horn button on the automobile, and the output terminal of photoelectrical coupler connects input of single chip; Single-chip microcomputer output port control output buffered gate, the reverse rear drive relay of output buffered gate, the normally opened contact of relay connect respectively+the off beat amount on 12V power supply and the automobile, two groups of loudspeaker of forte amount.

2. according to the horn control device of the changed volume of claim 1, it is characterized in that: the output terminal of described single-chip microcomputer and photoelectronic coupler is powered by a three terminal regulator.