CN205417357U - Adjustable volume car horn control system based on STM32 - Google Patents

Abstract

The utility model discloses an adjustable volume car horn control system based on STM32, include: host system, signal input module, clock module, executable module, be controlled the module, host system includes the STM32F103ZET6 singlechip, and the signal input module includes that left button and right side button, clock module include the DS1302 clock circuit, and the executable module includes relay I and relay II, is controlled the module and includes left loudspeaker and right loudspeaker. The utility model discloses can realize to the redistributing of car left side right loudspeaker function that left loudspeaker are as the warning horn, the tone is high, and the pronunciation is continuous, right loudspeaker is as indicateing loudspeaker, and the tone is lower, and it is discontinuous to pronounce, realizing that the whole car sends two kinds of whistling, playing the effect of indicateing with two kinds of differences of warning according to different road conditions situations, improve driving efficiency and safety, reduce the emergence of traffic accident, reduction city noise pollution creates civilization driving environment.

Description

A kind of adjusting sound volume horn control system based on STM32

Technical field

This utility model relates to vehicle electric field, is specifically related to a kind of adjusting sound volume horn control system based on STM32.

Background technology

Along with the quick growth of economic society, traffic system is growing, and Automobile Market enters a flourish stage the most already.Automobile all plays particularly important role in terms of commercial production and people's life.The most in modern society, automobile has become requisite walking-replacing tool in people's daily life, and it is accommodating that it makes people go out, time-consuming.Car horn is the safety measure of actively meeting an urgent need that a kind of automobile is indispensable, in time prompting pedestrian and vehicle, thus the generation avoided traffic accident.Generally car horn has a pair, about steering wheel each one, controls it by being provided with two buttons in left and right on the steering wheel.Current most of car horns use single intensity, and left and right loudspeaker sound phase modulation is same, and this horn designs can not be well adapted for practical context.Such as passing in business district automobile sends the sound of blowing a whistle of shrillness, causes blowing a whistle suddenly of the primary polluter of city noise pollution problem, even vehicle may frighten passerby often；When driver wants change lane in the process of moving, ear-piercing speaker sound is likely to interfere the driver of traveling ahead, it is impossible to play prompting and warning function rationally and effectively, hinders civilization driving and creates civilization traffic.

Utility model content

For the problems referred to above, this utility model provides a kind of adjusting sound volume horn control system based on STM32, single to solve most of car horn intensity in current automobile market, sound is ear-piercing, easily pedestrian and other drivers are caused scaring and interference, it is impossible to function well as and remind and the problem of warning function.Native system is with STM32 single-chip microcomputer as control core, by the circuit of left and right loudspeaker is carried out appropriate reconstruction, changes its tone, and left horn audio tone is high, loudness is big, and pronunciation is continuous, loudspeaker by way of caution；Right horn tone and loudness are relatively low, and pronunciation is discontinuous, as prompting loudspeaker；Respectively left and right loudspeaker are controlled by left and right button.

For reaching above-mentioned purpose, this utility model solves its technical problem and be the technical scheme is that a kind of adjusting sound volume horn control system based on STM32, including: main control module, signal input module, clock module, execution module, controlled module；Main control module includes STM32F103ZET6 single-chip microcomputer；Signal input module includes left button and right button；Clock module includes DS1302 clock circuit；Perform module and include relay I and relay II；Controlled module includes left horn and right horn.Left button, right button and single-chip microcomputer are electrical connections；Clock module and single-chip microcomputer are electrical connections；Relay I, relay II and single-chip microcomputer are electrical connections；Left horn and relay I are electrical connections；Right horn and relay II are electrical connections.

Described STM32F103ZET6 single-chip microcomputer is responsible for receiving left button and the control signal of right button input and real-time clock module sends the time signal of coming, and process signal and change, and situation about pressing according to left and right button sends different control signals respectively to relay I and relay II.

Described left button and right button are respectively as warning horn button and prompting horn button, and the input of left button signal by way of caution, right button is as the input of cue；Left button and right button lay respectively at the left and right two ends of vehicle steering；When driver in case of emergency sends out an emergency signal by left button, right button only need to be pressed when he is only intended to remind other people.

Described DS1302 clock circuit is responsible for system and provides timing accurately, and temporal information conveys to single-chip microcomputer, and the length of sound horn time is accurately controlled by single-chip microcomputer according to clocking information.

Described relay I and relay II are responsible for receiving the control signal that single-chip microcomputer is sent, and are controlled left horn and right horn respectively, and during relay Guan Bi, trumpet coil obtains electric, sends sound；When relay closes, do not turns off always, loudspeaker send the continuously sound；Closing after a period of time when Single-chip Controlling relay disconnects at set intervals, relay constantly turns off, when closing palikinesia, and the voltage that loudspeaker obtain also is off and on, loudspeaker can send interruption " beep ", " beep " sound.

Described left horn and right horn, respectively as warning horn and prompting loudspeaker, are each responsible for give a warning sibilant rale and prompting sibilant rale；Warning horn tone is high, continuous sounding, and effect of blowing a whistle is serious, can give a warning other driving vehicles or pedestrian well, causes other people to watch out for；Prompting loudspeaker sound mediation loudness is relatively low, is interrupted pronunciation under Single-chip Controlling, and effect of blowing a whistle is gentle, can remind other people, causes other people attention；The purpose different in order to reach left and right loudspeaker audio tone, resistance of having connected in the current supply circuit of right horn, make the electric current flowing through it diminish, cause the suction of loudspeaker coil to diminish, thus the step-down that pronounces, sound becomes soft；Not sealing in resistance in left horn current supply circuit, the electric current flow through is relatively big, and the sound sent is the biggest.

The utility model has the advantage of:

1. realizing redistributing to better adapt to real-time road to vehicle right and left horn function, left horn loudspeaker by way of caution, tone is high, and pronunciation is continuously；Right horn is as prompting loudspeaker, and tone is relatively low, and pronunciation is discontinuous；Realize a car and send two kinds of whistling, play the purpose of hint and caveat two kinds not same-action respectively.

2. solving most of car horns pronunciation in current automobile market single, sound is ear-piercing, easily pedestrian and other drivers is interfered the problem even frightened.

3. give full play to the effect of car horn, improve driving efficiency and safety, reduce the generation of vehicle accident, reduce city noise and pollute.

Accompanying drawing explanation

Accompanying drawing 1 is structured flowchart of the present utility model；

Accompanying drawing 2 is electrical block diagram of the present utility model.

Detailed description of the invention

Below according to accompanying drawing, this utility model is described in detail:

As it is shown in figure 1, adjusting sound volume horn control system based on STM32, including: main control module, signal input module, clock module, execution module, controlled module；Main control module includes STM32F103ZET6 single-chip microcomputer；Signal input module includes left button and right button；Clock module includes DS1302 clock circuit；Perform module and include relay I and relay II；Controlled module includes left horn and right horn.Left button, right button and single-chip microcomputer are electrical connections；Clock module and single-chip microcomputer are electrical connections；Relay I, relay II and single-chip microcomputer are electrical connections；Left horn and relay I are electrical connections；Right horn and relay II are electrical connections.This utility model inputs control signal, left button and right button by left and right button and respectively as warning horn button and points out horn button, and left button is used for inputting caution signals, and right button is used for input prompt signal；Left button and right button lay respectively at the arranged on left and right sides of vehicle steering；When driver runs into urgent or emergency situations by left button, right button only need to be pressed when he just hopes and reminds other people.After caution signals or cue are admitted to single-chip microcomputer, single-chip microcomputer calls corresponding alert program or attention program immediately, and exports corresponding control signal to relay I or relay II.When input be caution signals time, single-chip microcomputer starts to perform alert program, output continuous print high level signal is to relay I, relay I action, the closing of contact, left horn sends loud and clear warning whistling, owing to not sealing in resistance in left horn current supply circuit, therefore the electric current flow through is relatively big, and the sound sent is bigger, high level needs duration to be 5s, in order to obtain 5s time delay, single-chip microcomputer starts real-time timepiece chip immediately and carries out the timing of 5s, and after 5s, level becomes low level, relay I contact disconnects, and left horn stops sounding；Continue loud whistling can well other people be alerted, cause other people watch out for.When input be cue time, single-chip microcomputer starts to perform attention program, and the control signal that output is interrupted is to relay II, and this control signal is the level of height saltus step, and output level carries out height saltus step once every 0.5s, and period of change is 1s, continues altogether 3s；Relay II contact can close three times, and each closing time is 0.5s, in separated twice, each turn-off time is 0.5s, after 3s, return to disconnect state；Level saltus step single-chip microcomputer all can start real-time timepiece chip and carry out timing every time, carries out the delay operation of corresponding time span；Relay II and right horn are electrical connections, therefore, right horn is under the effect of the voltage signal being interrupted, can be interrupted and blow a whistle three times, sending " beep ", " beep ", the sound of " beep ", the persistent period of every time blowing a whistle is 0.5s, intermediate hold 0.5s, then proceed to sounding, receive alarm signal every time and just blow a whistle three times；Due to resistance of having connected in the circuit of right horn, the electric current flowing through it can diminish, and causes the electromagnetic attraction of loudspeaker coil to diminish, thus the step-down that pronounces, sound becomes soft；Pedestrian and other drivers can be played good reminding effect by the softst whistling, cause other people attention, reduce noise pollution simultaneously.

Further, it is STM32F103ZET6 single-chip microcomputer as preferred embodiment of the present utility model, such as Fig. 2, U1；S1 is left button；S2 is right button；K1 is relay I；K2 is relay II；LS1 is left horn；LS2 is right horn；BT1 is on-vehicle battery；R1 is series resistance；Y1 is single-chip microcomputer external crystal-controlled oscillation；C1 and C2 is matching capacitance；GND is ground connection；Left button S1 and right button S2 connects PA0 and the PA1 mouth of single-chip microcomputer input/output port respectively；Relay I and relay II connect rectangle part on the left of PC0 and the PC1 mouth of single-chip microcomputer input/output port, relay I and relay II respectively and represent that coil, right-side switch part represent contact；On-vehicle battery BT1 is the lead battery of 12V DC voltage；Series resistance R1 is the adjustable potentiometer of 1 kilohm；Y1, C1, C2 constitute external crystal oscillation circuit, and Y1 is the active crystal oscillator of 8MHz, and C1, C2 are 22pF ceramic condenser, and external crystal oscillation circuit is connected on OSC_IN and the OSC_OUT pin of single-chip microcomputer in succession；The equal ground connection of GND pin of single-chip microcomputer, VCC pin connects 3.3V DC source.

Further, as preferred embodiment of the present utility model, this utility model is with left horn loudspeaker by way of caution, and right horn is as prompting loudspeaker.Based on above-mentioned principle, also left horn can be highlighted as prompting loudspeaker, right horn loudspeaker by way of caution, human oriented design according to personal habits.

Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.Any those familiar with the art is in the technical scope that this utility model discloses, and the simple change of the technical scheme that can become apparent to or equivalence are replaced and each fallen within protection domain of the present utility model.

Claims (1)

1. an adjusting sound volume horn control system based on STM32, it is characterised in that including: main control module, signal input module, clock module, execution module, controlled module；Main control module includes STM32F103ZET6 single-chip microcomputer；Signal input module includes left button and right button；Clock module includes DS1302 clock circuit；Perform module and include relay I and relay II；Controlled module includes left horn and right horn；Left button, right button and single-chip microcomputer are electrical connections；Clock module and single-chip microcomputer are electrical connections；Relay I, relay II and single-chip microcomputer are electrical connections；Left horn and relay I are electrical connections；Right horn and relay II are electrical connections.