CN102194319B - Circuit of blind people prompter - Google Patents
Circuit of blind people prompter Download PDFInfo
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- CN102194319B CN102194319B CN 201110064291 CN201110064291A CN102194319B CN 102194319 B CN102194319 B CN 102194319B CN 201110064291 CN201110064291 CN 201110064291 CN 201110064291 A CN201110064291 A CN 201110064291A CN 102194319 B CN102194319 B CN 102194319B
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Abstract
The invention provides a circuit of a blind people prompter. The circuit of the blind people prompter comprises a microprocessor circuit, a signal sampling circuit, a sound processing circuit, an audio amplifying circuit, a loudspeaker, a serial port communication circuit and a power supply circuit, wherein the microprocessor circuit is connected with the signal sampling circuit so as to acquire a traffic light signal of a road signal lamp; the microprocessor circuit is connected with the sound processing circuit so as to store traffic sound information, and selectively play the corresponding traffic sound information according to the acquired traffic light signal of the road signal lamp; the sound processing circuit is connected with the audio amplifying circuit so as to perform audio amplification on the played traffic sound information; the audio amplifying circuit is connected with the loudspeaker; the microprocessor circuit is connected with the serial port communication circuit; and the power supply circuit is connected with the microprocessor circuit, the signal sampling circuit, the sound processing circuit, the audio amplifying circuit and the serial port communication circuit respectively. The circuit of the blind people prompter has the advantages of saving energy, reducing consumption and contributing to the stabilization of the product quality, along with scientific design.
Description
Technical field
The present invention relates to a kind of traffic prompt facility, specifically, relate to a kind of circuit of blind prompt device.
Background technology
In prior art, blind prompt device is for the walkway, carries out the transit equipment that voice suggestion pedestrian and blind person observe traffic rules and regulations.
For this reason, people are seeking a kind of desirable technical solution always.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of design science is provided, has saved energy and reduce the cost, be beneficial to the circuit of blind prompt device of constant product quality.
The technical solution adopted in the present invention is as follows: a kind of circuit of blind prompt device, and it includes microcontroller circuit, signal sample circuit, sound treatment circuit, audio amplifier circuit, loudspeaker, serial communication circuit and power circuit; Wherein, described microcontroller circuit connects described signal sample circuit in order to gather the traffic light signal of signal light path; Described microcontroller circuit connects described sound treatment circuit so that store the traffic voice messaging and select to play corresponding traffic voice messaging according to the traffic light signal of the signal light path that gathers; Described sound treatment circuit connects described audio amplifier circuit and amplifies processing so that the traffic voice messaging of playing is carried out audio frequency; Described audio amplifier circuit connects described loudspeaker; Described microcontroller circuit connects described serial communication circuit in order to provide communication interface for peripheral circuit; Described power circuit connects respectively described microcontroller circuit, described signal sample circuit, described sound treatment circuit, described audio amplifier circuit, described serial communication circuit so that working power to be provided.
Based on above-mentioned, it is the single-chip microcomputer of SST89E52RD that described microcontroller circuit adopts model.
Based on above-mentioned, it is the acoustic processing chip of ISD1760 that described sound treatment circuit adopts model.
Based on above-mentioned, described microcontroller circuit connects described audio amplifier circuit by power control circuit in order to control the work of audio amplifier circuit, and it is the audio frequency amplification chip of LM386 that described audio amplifier circuit adopts model.
Based on above-mentioned, described serial communication circuit adopts MAX3232 serial ports level transferring chip and MAX3234 serial ports level transferring chip.
based on above-mentioned, described signal sample circuit comprises red signal sample circuit and green light signals sample circuit, described sample circuit comprises photoisolator U4, diode D1, voltage stabilizing diode DZ1, voltage stabilizing diode DZ2, resistance R 2, resistance R 3 and capacitor C 11, wherein, described resistance R 2 one ends connect the positive pole of described diode D1, the negative pole of described diode D1 connects the negative pole of described voltage stabilizing diode DZ1, the positive pole of described voltage stabilizing diode DZ1 connects described resistance R 3 one ends, described resistance R 3 other ends connect described photoisolator U4 one input end, the negative pole of described voltage stabilizing diode DZ2 connects described photoisolator U4 one input end, the positive pole of described voltage stabilizing diode DZ2, described another input end of photoisolator U4, described resistance R 2 other ends are ground connection respectively, described capacitor C 11 two ends are connected in parallel on described photoisolator U4 two input ends, described resistance R 2 one ends are used for the signal end of linking-up road signal lamp, the output terminal of described photoisolator U4 is as the output terminal of sample circuit.
Based on above-mentioned, described power circuit comprises green light signals power-supply circuit, red signal power-supply circuit, Switching Power Supply and integrated stable voltage circuit, wherein, the output terminal of the output terminal of described green light signals power-supply circuit, described red signal power-supply circuit connects respectively the input end of described Switching Power Supply, and the output terminal of described Switching Power Supply connects the input end of described integrated stable voltage circuit; Described power-supply circuit comprises resistance R 13, resistance R 14, capacitor C 23 and rectifier bridge BR1, described resistance R 13 1 ends, described resistance R 14 1 ends connect respectively the input end of described rectifier bridge BR1, described resistance R 13 other ends, described resistance R 14 other ends connect respectively described capacitor C 23 1 ends, another input end of described rectifier bridge BR1 and described capacitor C 23 other ends are ground connection respectively, the input end of described rectifier bridge BR1 is used for the signal end of linking-up road signal lamp, and two output terminals of described rectifier bridge BR1 are as the output terminal of power-supply circuit.
The relative prior art of the present invention has outstanding substantive distinguishing features and marked improvement, specifically, this product clear sound, loud and clear, small volume and less weight, flexible for installation can be carried out the sound customization according to customer demand;
This product has following characteristics: have timed switching function, can customize according to user's request; In timed switching function, also have according to different period automatic sound-volume adjusting functions.Preferably resolve the sound problem that disturbs residents at night; Automatically the identification traffic signals, emit different information of voice prompt according to different traffic signals; The learning signal cycle is fast, realize one-period association, and between the learning period, playback does not stop; Volume adjusting adopts microswitch to regulate, and has solved the carbon film volume potentiometer, uses in outdoor rugged surroundings, holds flimsy problem.
Description of drawings
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the circuit theory diagrams of described microcontroller circuit;
Fig. 3 is the circuit theory diagrams of described serial communication circuit;
Fig. 4 is the circuit theory diagrams of described sample circuit;
Fig. 5 is the circuit theory diagrams of described power circuit;
Fig. 6 is the circuit catenation principle figure of described sound treatment circuit, described audio amplifier circuit, described power control circuit and described loudspeaker.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
As shown in Figure 1, a kind of circuit of blind prompt device, it includes microcontroller circuit, signal sample circuit, sound treatment circuit, audio amplifier circuit, loudspeaker, serial communication circuit and power circuit; Wherein, described microcontroller circuit connects described signal sample circuit in order to gather the traffic light signal of signal light path; Described microcontroller circuit connects described sound treatment circuit so that store the traffic voice messaging and select to play corresponding traffic voice messaging according to the traffic light signal of the signal light path that gathers; Described sound treatment circuit connects described audio amplifier circuit and amplifies processing so that the traffic voice messaging of playing is carried out audio frequency; Described audio amplifier circuit connects described loudspeaker; Described microcontroller circuit connects described serial communication circuit in order to provide communication interface for peripheral circuit; Described power circuit connects respectively described microcontroller circuit, described signal sample circuit, described sound treatment circuit, described audio amplifier circuit, described serial communication circuit so that working power to be provided;
Overall circuit block diagram detailed annotation: mainly formed by power circuit, single-chip microcomputer E52 circuit, RTC real time clock circuit, serial communication circuit, acoustic processing, audio frequency amplification, signal sample circuit.Single-chip microcomputer C52 is according to sample information, and sending control signal makes sound treatment circuit emit corresponding voice messaging, output after audio amplifier circuit amplifies.
Based on above-mentioned, as shown in Figure 2, it is the single-chip microcomputer of SST89E52RD that described microcontroller circuit adopts model; Compare with common single-chip microcomputer, the SST89E52RD single-chip microcomputer also has the high 0-40MHZ of frequency of operation except complete compatibility, include two high-performance SUPERFLASH storeies (EEPROM), 3 16 bit timings/counters, full duplex enhanced serial port communication (UART), 10 interrupt sources, 4 interrupt priority levels, and programmable inner house dog, etc. resource, can say that peripheral interface is abundant, diverse in function is used safety and stability.This circuit, whole control core parts, major function is to receive and process the access time information that PC end software provides, and temporal information write clock chip, the sample information of simultaneously sample circuit being sent is identified, counting, send corresponding control signal according to sample information, make sound treatment circuit emit voice messaging;
The RTC real time clock circuit adopts ripe ds1302 clock chip, as system clock, provides sound assurance for the timing switching function with according to different period automatic sound-volume adjusting functions.
Based on above-mentioned, as shown in Figure 3, described serial communication circuit adopts MAX3232 serial ports level transferring chip and MAX3234 serial ports level transferring chip; The serial communication control circuit adopts MAX3232 serial ports level transferring chip, realizes PC and SST89E52 serial communication function.The deadline read-write capability.
based on above-mentioned, as shown in Figure 4, described signal sample circuit comprises red signal sample circuit and green light signals sample circuit, described sample circuit comprises photoisolator U4, diode D1, voltage stabilizing diode DZ1, voltage stabilizing diode DZ2, resistance R 2, resistance R 3 and capacitor C 11, wherein, described resistance R 2 one ends connect the positive pole of described diode D1, the negative pole of described diode D1 connects the negative pole of described voltage stabilizing diode DZ1, the positive pole of described voltage stabilizing diode DZ1 connects described resistance R 3 one ends, described resistance R 3 other ends connect described photoisolator U4 one input end, the negative pole of described voltage stabilizing diode DZ2 connects described photoisolator U4 one input end, the positive pole of described voltage stabilizing diode DZ2, described another input end of photoisolator U4, described resistance R 2 other ends are ground connection respectively, described capacitor C 11 two ends are connected in parallel on described photoisolator U4 two input ends, described resistance R 2 one ends are used for the signal end of linking-up road signal lamp, the output terminal of described photoisolator U4 is as the output terminal of sample circuit.
Based on above-mentioned, as shown in Figure 5, described power circuit comprises green light signals power-supply circuit, red signal power-supply circuit, Switching Power Supply and integrated stable voltage circuit, wherein, the output terminal of the output terminal of described green light signals power-supply circuit, described red signal power-supply circuit connects respectively the input end of described Switching Power Supply, and the output terminal of described Switching Power Supply connects the input end of described integrated stable voltage circuit; Described power-supply circuit comprises resistance R 13, resistance R 14, capacitor C 23 and rectifier bridge BR1, described resistance R 13 1 ends, described resistance R 14 1 ends connect respectively the input end of described rectifier bridge BR1, described resistance R 13 other ends, described resistance R 14 other ends connect respectively described capacitor C 23 1 ends, another input end of described rectifier bridge BR1 and described capacitor C 23 other ends are ground connection respectively, the input end of described rectifier bridge BR1 is used for the signal end of linking-up road signal lamp, and two output terminals of described rectifier bridge BR1 are as the output terminal of power-supply circuit.
Based on above-mentioned, as shown in Figure 6, it is the acoustic processing chip of ISD1760 that described sound treatment circuit adopts model; Sound treatment circuit ISD1760 family chip is the new monolithic high-quality voice playback circuitry of releasing of Hua Bang company, and this chip provides multiple function.Chip internal includes the comprehensive integration system function of automatic gain control, the preposition expander of microphone, speaker drive circuit, oscillator and internal memory.This chip can be recorded, playback 100,000 times, and memory contents can be cut off the power supply and be kept 100 years.Two kinds of control modes, two kinds of recording input modes, two kinds of playback way of outputs.Can process nearly more than 255 sections the functions such as information.This circuit application is simple, and is safe and reliable, is mainly used in the traffic voice messaging of store customized, after receiving the SST89E52 control signal, according to the address that control signal provides, automatically takes out corresponding voice messaging from this address, automatically plays.
Based on above-mentioned, described microcontroller circuit connects described audio amplifier circuit by power control circuit in order to control the work of audio amplifier circuit, and it is the audio frequency amplification chip of LM386 that described audio amplifier circuit adopts model; Audio amplifier circuit adopts advanced LM386 chip, and as audio amplifier circuit, exporting voice messaging from sound treatment circuit, the amplification of reducing makes clear sound loud and clear.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (5)
1. circuit of blind prompt device, it is characterized in that: this circuit of blind prompt device includes microcontroller circuit, signal sample circuit, sound treatment circuit, audio amplifier circuit, loudspeaker, serial communication circuit and power circuit;
Wherein, described microcontroller circuit connects described signal sample circuit in order to gather the traffic light signal of signal light path; Described microcontroller circuit connects described sound treatment circuit so that store the traffic voice messaging and select to play corresponding traffic voice messaging according to the traffic light signal of the signal light path that gathers; Described sound treatment circuit connects described audio amplifier circuit and amplifies processing so that the traffic voice messaging of playing is carried out audio frequency; Described audio amplifier circuit connects described loudspeaker; Described microcontroller circuit connects described serial communication circuit in order to provide communication interface for peripheral circuit; Described power circuit connects respectively described microcontroller circuit, described signal sample circuit, described sound treatment circuit, described audio amplifier circuit, described serial communication circuit so that working power to be provided;
described signal sample circuit comprises red signal sample circuit and green light signals sample circuit, described sample circuit comprises photoisolator U4, diode D1, voltage stabilizing diode DZ1, voltage stabilizing diode DZ2, resistance R 2, resistance R 3 and capacitor C 11, wherein, described resistance R 2 one ends connect the positive pole of described diode D1, the negative pole of described diode D1 connects the negative pole of described voltage stabilizing diode DZ1, the positive pole of described voltage stabilizing diode DZ1 connects described resistance R 3 one ends, described resistance R 3 other ends connect described photoisolator U4 positive input terminal, the negative pole of described voltage stabilizing diode DZ2 connects described photoisolator U4 positive input terminal, the positive pole of described voltage stabilizing diode DZ2, described photoisolator U4 negative input end, described resistance R 2 other ends are ground connection respectively, described capacitor C 11 two ends just are being connected in parallel on described photoisolator U4, negative input end, described resistance R 2 one ends are used for the signal end of linking-up road signal lamp, the output terminal of described photoisolator U4 is as the output terminal of sample circuit,
Described power circuit comprises green light signals power-supply circuit, red signal power-supply circuit, Switching Power Supply and integrated stable voltage circuit, wherein, the output terminal of the output terminal of described green light signals power-supply circuit, described red signal power-supply circuit connects respectively the input end of described Switching Power Supply, and the output terminal of described Switching Power Supply connects the input end of described integrated stable voltage circuit; Described power-supply circuit comprises resistance R 13, resistance R 14, capacitor C 23 and rectifier bridge BR1, described resistance R 13 1 ends, described resistance R 14 1 ends connect respectively the input end of described rectifier bridge BR1, described resistance R 13 other ends, described resistance R 14 other ends connect respectively described capacitor C 23 1 ends, another input end of described rectifier bridge BR1 and described capacitor C 23 other ends are ground connection respectively, the input end of described rectifier bridge BR1 is used for the signal end of linking-up road signal lamp, and two output terminals of described rectifier bridge BR1 are as the output terminal of power-supply circuit.
2. circuit of blind prompt device according to claim 1 is characterized in that: it is the single-chip microcomputer of SST89E52RD that described microcontroller circuit adopts model.
3. circuit of blind prompt device according to claim 1 is characterized in that: it is the acoustic processing chip of ISD1760 that described sound treatment circuit adopts model.
4. circuit of blind prompt device according to claim 1, it is characterized in that: described microcontroller circuit connects described audio amplifier circuit by power control circuit in order to control the work of audio amplifier circuit, and it is the audio frequency amplification chip of LM386 that described audio amplifier circuit adopts model.
5. circuit of blind prompt device according to claim 1, is characterized in that: described serial communication circuit employing MAX3232 serial ports level transferring chip and MAX3234 serial ports level transferring chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110064291 CN102194319B (en) | 2011-03-17 | 2011-03-17 | Circuit of blind people prompter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110064291 CN102194319B (en) | 2011-03-17 | 2011-03-17 | Circuit of blind people prompter |
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| Publication Number | Publication Date |
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| CN102194319A CN102194319A (en) | 2011-09-21 |
| CN102194319B true CN102194319B (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110064291 Expired - Fee Related CN102194319B (en) | 2011-03-17 | 2011-03-17 | Circuit of blind people prompter |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489311A (en) * | 2011-11-21 | 2014-01-01 | 山东大学 | Operating method of single chip microcomputer in intelligent traffic crossing intersection management system |
| CN103236156B (en) * | 2013-05-06 | 2015-06-17 | 北京美尔斯通科技发展股份有限公司 | Blind guide system based on traffic signal indicating lamp |
| CN103606286A (en) * | 2013-11-13 | 2014-02-26 | 河南理工大学 | Traffic light real-time state prompting device for assisting colorblind |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2096782U (en) * | 1991-01-08 | 1992-02-19 | 薛明明 | Phonetics safety prompting apparatus for traffic signal |
| CN2322196Y (en) * | 1998-03-05 | 1999-06-02 | 刘天利 | Signal lamp controlled speech letter-posting device |
| CN2493987Y (en) * | 2001-06-28 | 2002-05-29 | 特达机电(天津)有限公司 | Alarm for blind person crossing street |
| CN201355522Y (en) * | 2008-12-26 | 2009-12-02 | 宿迁徐港电子有限公司 | Voice prompt system for traffic signals |
| CN201984629U (en) * | 2011-03-17 | 2011-09-21 | 生茂光电科技股份有限公司 | Circuit of blind prompt device |
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2011
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| CN102194319A (en) | 2011-09-21 |
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