CN106981190A - Intelligent pedestrian's street crossing prompting device - Google Patents
Intelligent pedestrian's street crossing prompting device Download PDFInfo
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- CN106981190A CN106981190A CN201710379442.5A CN201710379442A CN106981190A CN 106981190 A CN106981190 A CN 106981190A CN 201710379442 A CN201710379442 A CN 201710379442A CN 106981190 A CN106981190 A CN 106981190A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/005—Traffic control systems for road vehicles including pedestrian guidance indicator
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Abstract
The present invention relates to a kind of intelligent pedestrian's street crossing prompting device, it is characterized in that：Including single-chip microcomputer processing controller, ultrasound detection module, environment noise test module, isolation sampling module, voice integration module, volume adjusting module, power amplifier module and power module；The input connection red signal and green light signals of the isolation sampling module, output end connection single-chip microcomputer processing controller；The output end connection single-chip microcomputer processing controller of the ultrasound detection module；The output end connection single-chip microcomputer processing controller of the environment noise test module；The level triggers playback port connection single-chip microcomputer processing controller of the voice integration module, audio output connects the sampling input of volume adjusting module；The FPDP connection single-chip microcomputer processing controller of volume adjusting module, output end connects the input of power amplifier module, the output end connection loudspeaker of power amplifier module.The present invention can realize that intelligent sound is opened and environment self-adaption volume functions.
Description
Technical field
The present invention relates to a kind of intelligent pedestrian's street crossing prompting device, especially a kind of pedestrian's mistake for coordinating pedestrian signal lamp to use
Street voice prompting device, belongs to intelligent transportation system pedestrian signal lamp technical field.
Background technology
In the prior art, the main mate-assist traffic pedestrian signal lamp of pedestrian crossing prompting device is used, red according to signal lamp
Green state, fixed frequency knock is sent in people's row green light phase, and the pedestrian to blind person or inconvenience action gives timely prompting,
Safety traffic intersection.
At present, the knock of pedestrian crossing prompting device is typically produced by mechanical oscillation, and the prompt tone that mechanical oscillation are produced
It is unintelligible, it is more difficult to catch especially in the case where the magnitude of traffic flow and noise are more.And the prompting that mechanical oscillation are produced
Sound, is produced, frequency is fixed by hardware circuit waveform generator, as client need change, then circuit change it is larger.Current supplementary biography
Blanket insurance defends city city still in the mechanical rappers using this pattern, and some rapid economic development cities are pointed out using speech chip
Device.Chinese patent document CN203386366 U are directed to this drawback, propose a kind of utility model patent《A kind of voice message
Device and traffic lights》, document proposes to replace mechanical percussion vibration by speech chip, but this patent is just for prompting device knock
It is improved, to prompting device voice opening ways and its prompt tone volume adjusting etc., other aspects are not improved.
Traditional pedestrian crossing prompting device, hardware circuit is simple, and no voice output judges that voice was exported always in 24 hours,
Upset resident living and study.As time goes on, some prompting device product designs have been gradually added into timer, it can enter at times
Row voice output, such as noon or evening close voice, and other periods open voice.Chinese patent document ZL
200620145342.3 propose a kind of utility model patent《Pedestrian crossing voice prompting device》, document propose add timer, be
System can voice output, at times volume adjusting at times.But this scheme can not still meet contemporary modernization development requirement, a side
Face, with the development of city size, business district vehicle flowrate is big, noise is serious；Remote suburb vehicle flowrate is few, peace and quiet.If prompting
Device product is all worked change volume at times using timer, and suburbanite still thinks that street crossing prompting device gives them life band
To disturb, and business district blind person or handicapped personage are especially big due to ambient noise, it is difficult to argue prompt tone out, cause dangerous mistake
Road.On the other hand, timer meeting generation time accumulated error, after installing several years, voice output period point deviation to rest
Period, it can still disturb residents.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art there is provided a kind of intelligent pedestrian's street crossing prompting device, energy
Enough realize that intelligent sound is opened and environment self-adaption volume functions.
The technical scheme provided according to the present invention, the intelligent pedestrian's street crossing prompting device, it is characterized in that：At single-chip microcomputer
Manage controller, ultrasound detection module, environment noise test module, isolation sampling module, voice integration module, volume adjusting mould
Block, power amplifier module and the power module for above-mentioned module for power supply；
The input connection red signal and green light signals of the isolation sampling module, the output end of isolation sampling module are connected to
Single-chip microcomputer processing controller；The isolation sampling module carries out isolation sampling to red signal, green light signals, produces red, green adopt
Sample level signal, and send to single-chip microcomputer processing controller；
The output end connection single-chip microcomputer processing controller of the ultrasound detection module, ultrasound detection module is used to detect people's row signal
Whether lamp detection zone has pedestrian in wait, and produces corresponding low and high level signal and send to single-chip microcomputer processing controller, single
Piece machine processing controller decides whether to open voice integration module according to level signal；
The output end connection single-chip microcomputer processing controller of the environment noise test module, environment noise test module collection environment
Voice signal is sent to single-chip microcomputer processing controller, and the environmental sound signal of collection is carried out modulus and turned by single-chip microcomputer processing controller
Change and carry out judgement and determine the need for carrying out volume adjusting to volume adjusting module；
The level triggers playback port connection single-chip microcomputer processing controller of the voice integration module, the audio of voice integration module
Output end connects the sampling input of volume adjusting module；FPDP and the clock port connection of the volume adjusting module are single
Piece machine processing controller, the output end of volume adjusting module connects the input of power amplifier module, power amplifier module it is defeated
Go out end connection loudspeaker.
Further, the ultrasound detection module uses transceiving integrated ultrasound examination module.
Further, the environment noise test module includes miaow head.
Further, the voice integration module uses 00H start address storage inside speech chip, speech chip
700Hz sinusoidal audios.
Further, the volume adjusting module uses electronic sound volume chip.
Further, the power amplifier module uses TDA2030 type audio-frequency power amplifiers.
Further, the DC12V output ends connection power amplifier module of the power module；DC12V is through DC-DC voltage-stablizers
Voltage stabilizing is into DC5V, for single-chip microcomputer processing controller, ultrasound detection module, environment noise test module, isolation sampling module, voice
Integration module and volume adjusting module work.
Intelligent pedestrian's street crossing prompting device of the present invention abandons timer timing section voice output technology, abandons mechanical percussion
Audiotechnica, is improved on conventional art, and increase ultrasound acquisition module and environment noise test module, increase voice are integrated
Module, preferably resolves the deficiency in existing product technology, so that intelligent sound output and volume adjusting are fully achieved, rather than
Segmentation voice output and volume adjusting when fixed.
Brief description of the drawings
Fig. 1 is the block diagram of intelligent pedestrian's street crossing prompting device of the present invention.
Fig. 2 is the workflow diagram of intelligent pedestrian's street crossing prompting device of the present invention.
Description of reference numerals：11- power modules, 12- single-chip microcomputers processing controller, 13- ultrasound detections module, 14- environment
Noise detection module, 15- isolation sampling module, 16- voices integration module, 17- volume adjusting modules, 18- power amplifier modules,
N- zero lines, LR- red signals, LG- green light signals.
Embodiment
With reference to specific accompanying drawing, the invention will be further described.
As shown in figure 1, intelligent pedestrian's street crossing prompting device of the present invention includes single-chip microcomputer processing controller 12, power module
11st, ultrasound detection module 13, environment noise test module 14, isolation sampling module 15, voice integration module 16, volume adjusting mould
Block 17 and power amplifier module 18.
The power module 11 uses AC-DC reaction type Switching Power Supply patterns, carries out constant voltage DC12V outputs；It is described
Power module 11 includes IN4007 types commutation diode and switching power source chip, the input connection zero line N of power module 11, red
Modulating signal LR and green light signals LG, red signal LR, green light signals LG and zero line N are carried out whole by IN4007 types commutation diode
Stream filtering, switching power source chip uses L6561, and output loading voltage is multiplied by switching power source chip with input voltage, it is determined that electric
Inducing current peak value, the GD pin of switching power source chip carry out PWM mode output, and PWM mode can adjust external metal-oxide-semiconductor dutycycle, from
And reaching that the voltage stabilizing of DC12V constant pressures is exported, DC12V powers to power amplifier module 18, and DC12V passes through DC-DC voltage-stablizer voltage stabilizings again
Into DC5V, for single-chip microcomputer processing controller 12, ultrasound detection module 13, environment noise test module 14, isolation sampling module 15,
Voice integration module 16 and volume adjusting module 17 work.
The isolation sampling module 15 carries out isolation sampling using PC814 to red signal LR, green light signals LG, produces
Red, green sampled level signal, sends to the I/O mouths of single-chip microcomputer processing controller 12.
The ultrasound detection module 13 uses transceiving integrated ultrasound examination module, can provide 25cm-450cm noncontacts
Formula distance sensing function, range accuracy may be up to 3mm；Whether the detection pedestrian signal lamp of ultrasound detection module 13 detection zone
There is pedestrian in wait, different low and high level signals is sent to the I/O mouths of single-chip microcomputer processing controller 12, it is ultrasonic during no pedestrian
Detection module 13 sends low level signal, and ultrasound detection module 13 sends high level signal when having pedestrian；The single-chip microcomputer processing
Controller 12 decides whether that opening voice integration module 16 exports by the I/O mouthfuls of low and high level state.
The environment noise test module 14 includes miaow head MIC, and miaow head MIC converts acoustic signals into telecommunications by diaphragm
Number, miaow head MIC output end connects the pin of in-phase input end 3 of LM258 type operational amplifiers, LM258 type operational amplifiers it is anti-
The pin of phase input 2 bridges 100K resistance to the pin of output end 1,1K and 10uF electric capacity, the sound for so gathering miaow head MIC are concatenated over the ground
Sound ac signal carries out 100 times of amplifications, while being produced the pin of in-phase input end 3 by the 10uF electric capacity of the pin of inverting input 2
Direct current signal filtering, carry out the exchange output of output end 1 pin.During the pin of output end 1 output of LM258 type operational amplifiers, elder generation is needed
Electric capacity AC coupled, then through diode rectification, to I/O mouthfuls of the analog-to-digital conversion of single-chip microcomputer processing controller 12；Single-chip microcomputer processing control
The ambient sound analog signal of collection is converted into data signal by device 12 processed by analog-digital converter, and threshold value is carried out to data signal
Judge, it is determined whether need to carry out volume adjusting to volume adjusting module 17.
The voice integration module 16 uses high fidelity speech chip, and voice messaging keeps not losing for 100 years；Voice is integrated
The level triggers playback port of module 16 is played by low and high level state control voice, and audio output carries out audio output,
The inside 00H start address storage 700Hz sinusoidal audios of voice integration module 16.The voice integration module 16 plays audio
Condition is：（1）Single-chip microcomputer processing controller 12 is green light by isolating sampling module 15 to detect current pedestrian signal lamp state；
（2）Single-chip microcomputer processing controller 12 detects pedestrian signal lamp detection zone by ultrasound detection module 13 pedestrian's wait；
Meet condition（1）With（2）When, the I/O triggering low levels of single-chip microcomputer processing controller 12 open the broadcasting of voice integration module 16
Function, speech play is carried out by the audio input end of speech chip.
The volume adjusting module 17 carries out tuning using electronic sound volume chip, and electronic sound volume chip uses Serial Control side
Formula, the audio output of the sampling input connection voice integration module 16 of electronic sound volume chip, electronic sound volume chip is in clock
Lower change input sound channel output valve, the output end of electronic sound volume chip connects the input of power amplifier module 18；At single-chip microcomputer
Manage controller 12 and carry out threshold decision, if necessary to regulation volume, the control volume adjusting module 17 of single-chip microcomputer processing controller 12
FPDP and clock port, change electronic sound volume chip output end output valve；If volume, monolithic need not be adjusted
The numerical value of the write-in electronic sound volume chip data of machine processing controller 12 port is constant, the output valve of the output end of electronic sound volume chip
It is constant；Because the output end of electronic sound volume chip connects the input of power amplifier module 18, so power amplifier module 18
Audio input changes with the output end of electronic sound volume chip.
The power amplifier module 18 uses TDA2030 type audio-frequency power amplifiers, and the audio-frequency power amplifier has body
The advantages of small, output power of product, small distortion factor.The input of the power amplifier module 18（TDA2030 homophase input 1
Pin）The output end of volume adjusting module 17 is connected, follows voice output to change；The TDA2030 pin of anti-phase input 2 and 4 pin of output
Between fixed multiplication factor is set, by 1 pin signal of homophase input, 60 times of amplifications, output 4 pin output, Large Copacity electricity of being connected during output
Hold, carry out the audio signal after coupling amplification to loudspeaker Y.
Described single-chip microcomputer processing controller 12 pairs of isolation sampling modules 15, environment noise test module 14, super ultrasound detections
Module 13 carries out input detection, the voice output and volume adjusting of intelligent control pedestrian's street crossing prompting device.
Intelligent pedestrian's street crossing prompting device of the present invention ground workflow, as shown in Fig. 2 including：
（1）Current pedestrian signal lamp state is sampled, judges whether it is green light phase, if not, returning directly to start；
If it is, into step（2）；
（2）The pedestrian's inductive switch signal for judging to produce by ultrasound detection module 13, if no signal is produced, is returned directly to
Start；If so, into step（3）；
（3）Judge whether ambient noise changes by environment noise test module 14, now it is noted that carrying out multi collect simultaneously
Quantify, exclusive PCR factor, if volume changes, single-chip microcomputer processing controller 12 changes the data of electronic sound volume chip
Value, changes the output of electronic sound volume chip volume；If unchanged, data value does not change, and maintains original volume output.
The following good superiority that the present invention has：
（1）Ultrasound detection module integrates transmission-receiving function, and the interference phenomenons such as the easy light of infrared detection, temperature are not present in it,
In the absence of detections of radar using electromagnetic wave easily by electronic product interference phenomenon, ultrasonic wave uses sound wave, with good directionality
And penetrability, belong to a kind of detection technique reliable at present.
Ultrasound detection Module-embedding is in pedestrian's street crossing prompting device, please by ultrasound detection module alignment row during installation suggestion device
People waits monitor area, if monitor area has detected pedestrian, module opens pedestrian's inductive switch signal, and single-chip microcomputer is detected
After this switching signal, the voice output of voice integration module is opened.
（2）Environment noise test module uses electret capacitor microphone, microphone head, by diaphragm vibration, by ring
The voice signal in border is converted to electric signal, and because this signal is very faint, internal resistance is very high, it is impossible to directly use, it is necessary to logical
Cross amplifier and line translation and amplification are entered into impedance.
Ambient noise module is sampled by miaow head to ambient sound shellfish, and analog voltage signal after conversion is delivered to amplifier
Analog-digital converter is used inside single-chip microcomputer, single-chip microcomputer, analog-to-digital conversion is carried out, single-chip microcomputer controls volume adjusting module after conversion, changes
Become volume output.
Claims (7)
1. a kind of intelligent pedestrian's street crossing prompting device, it is characterized in that：Including single-chip microcomputer processing controller（12）, ultrasound detection module
（13）, environment noise test module（14）, isolation sampling module（15）, voice integration module（16）, volume adjusting module（17）、
Power amplifier module（18）And be the power module of above-mentioned module for power supply（11）；
The isolation sampling module（15）Input connection red signal and green light signals, isolate sampling module（15）Output
End is connected to single-chip microcomputer processing controller（12）；The isolation sampling module（15）Red signal, green light signals are isolated
Sampling, produces red, green sampled level signal, and send to single-chip microcomputer processing controller（12）；
The ultrasound detection module（13）Output end connection single-chip microcomputer processing controller（12）, ultrasound detection module（13）For
Detect whether pedestrian signal lamp detection zone has pedestrian in wait, and produce corresponding low and high level signal and send to single-chip microcomputer
Manage controller（12）, single-chip microcomputer processing controller（12）Decided whether to open voice integration module according to level signal（16）；
The environment noise test module（14）Output end connection single-chip microcomputer processing controller（12）, environment noise test module
（14）Collection environmental sound signal is sent to single-chip microcomputer processing controller（12）, single-chip microcomputer processing controller（12）By the ring of collection
Border voice signal carries out analog-to-digital conversion and carries out judgement determining the need for volume adjusting module（17）Carry out volume adjusting；
The voice integration module（16）Level triggers playback port connection single-chip microcomputer processing controller（12）, the integrated mould of voice
Block（16）Audio output connection volume adjusting module（17）Sampling input；The volume adjusting module（17）Data
Port and clock port connection single-chip microcomputer processing controller（12）, volume adjusting module（17）Output end connection power amplification mould
Block（18）Input, power amplifier module（18）Output end connection loudspeaker.
2. intelligent pedestrian's street crossing prompting device as claimed in claim 1, it is characterized in that：The ultrasound detection module（13）Using receipts
Send out Integral ultrasonic detection module.
3. intelligent pedestrian's street crossing prompting device as claimed in claim 1, it is characterized in that：The environment noise test module（14）Bag
Include miaow head.
4. intelligent pedestrian's street crossing prompting device as claimed in claim 1, it is characterized in that：The voice integration module（16）Using language
00H start address storage 700Hz sinusoidal audios inside sound chip, speech chip.
5. intelligent pedestrian's street crossing prompting device as claimed in claim 1, it is characterized in that：The volume adjusting module（17）Using electricity
Consonant amount chip.
6. intelligent pedestrian's street crossing prompting device as claimed in claim 1, it is characterized in that：The power amplifier module（18）Using
TDA2030 type audio-frequency power amplifiers.
7. intelligent pedestrian's street crossing prompting device as claimed in claim 1, it is characterized in that：The power module（11）DC12V it is defeated
Go out end connection power amplifier module（18）；DC12V through the voltage stabilizing of DC-DC voltage-stablizers into DC5V, for single-chip microcomputer processing controller（12）、
Ultrasound detection module（13）, environment noise test module（14）, isolation sampling module（15）, voice integration module（16）And volume
Adjustment module（17）Work.
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| CN201710379442.5A CN106981190A (en) | 2017-05-25 | 2017-05-25 | Intelligent pedestrian's street crossing prompting device |
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|---|---|---|---|
| CN201710379442.5A CN106981190A (en) | 2017-05-25 | 2017-05-25 | Intelligent pedestrian's street crossing prompting device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944663A (en) * | 2018-07-30 | 2018-12-07 | 湖南考思特电子有限公司 | Pure electric automobile and plug-in hybrid-power automobile run at a low speed prompt mixer |
| CN110264922A (en) * | 2019-06-06 | 2019-09-20 | 北京分形科技有限公司 | A kind of intelligence guiding device and guide to visitors screen |
| CN114373294A (en) * | 2022-01-13 | 2022-04-19 | 深圳市赛诺杰科技有限公司 | Sound prompting device and method for automatically adjusting volume based on environmental noise |
| WO2023077629A1 (en) * | 2021-11-03 | 2023-05-11 | 无锡安邦电气股份有限公司 | Voice street-crossing prompter system for blind people |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108944663A (en) * | 2018-07-30 | 2018-12-07 | 湖南考思特电子有限公司 | Pure electric automobile and plug-in hybrid-power automobile run at a low speed prompt mixer |
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| CN114373294A (en) * | 2022-01-13 | 2022-04-19 | 深圳市赛诺杰科技有限公司 | Sound prompting device and method for automatically adjusting volume based on environmental noise |
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Application publication date: 20170725 |