CN202459187U - A blind person guide device prompting pedestrians about making way for the blind - Google Patents
A blind person guide device prompting pedestrians about making way for the blind Download PDFInfo
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- CN202459187U CN202459187U CN2011205059732U CN201120505973U CN202459187U CN 202459187 U CN202459187 U CN 202459187U CN 2011205059732 U CN2011205059732 U CN 2011205059732U CN 201120505973 U CN201120505973 U CN 201120505973U CN 202459187 U CN202459187 U CN 202459187U
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Abstract
The utility model provides a blind person guide device prompting pedestrians about making way for the blind. The blind person guide device is formed by a transceiver ultrasonic sensor [3] and a pyroelectric infrared sensor [11] covered with a Fresnel lens [10]. The blind person guide device comprises an ultrasonic oscillating circuit [1], an ultrasonic modulator circuit [2], the transceiver ultrasonic sensor [3], a pre-amplification integrated circuit [4], a repeated trigger monostable trigger [5], an RS trigger [6], a microprocessor [7], a voice output circuit [8], a loudspeaker [9], the Fresnel lens [10], the pyroelectric infrared sensor [11], an infrared pyroelectric treatment chip [12], and a battery-powered power source. The microprocessor calculates the distance between the blind and an obstacle after receiving an ultrasonic echo signal and gives out a corresponding voice prompt and gives out the voice prompt preferentially when an infrared signal of human body radiation is received. The blind person guide device is easy to carry and operate, guarantees accuracy of prompts, is cheap and guarantees safety of the blind going out.
Description
Affiliated technical field
This utility model relates to the obstacle detection sound prompt device that a kind of pedestrian of prompting dodges, the blind-guide device of particularly pointing out the dead ahead pedestrian to dodge.
Background technology
Existing guide instrument can not detect the difference of pedestrian and common barrier, can't clearly point out pedestrian and user, and user still might be caused danger by pedestrian impact.
" the torch formula scale voice blind guide " of Chinese patent 90221811, it can point out distance of obstacle with different scales, but can't detect common barrier and the place ahead pedestrian's difference, brings great potential safety hazard to user.
Summary of the invention
Distinguish the common barrier in the place ahead when helping the blind person to go on a journey and also can in time dodge with voice suggestion the place ahead pedestrian and user with the pedestrian, the blind-guide device that this utility model provides a kind of pedestrian of prompting to dodge brings great convenience to user.
This utility model solves the technical scheme that its technical problem adopted: structurally adopt transceiver sonac and pyroelectric infrared sensor that common barrier and pedestrian in the 60 ° of covering of the fans in the place ahead are surveyed respectively, thereby can provide voice suggestion respectively to common barrier and pedestrian.
This utility model comprises transceiver sonac, supersonic oscillations circuit, ultrasound wave modulation circuit, preposition amplification circuit, can heavily trigger monostable flipflop, rest-set flip-flop, microprocessor control circuit, voice output circuit, speaker, Fresnel Lenses, pyroelectric infrared sensor, infrared thermal release electric process chip.The signal of the 40KHz that oscillating circuit produces is through modulating circuit modulates rear drive transceiver sonac emission ultrasonic pulse; Ultrasonic pulse produces reflection after running into obstacle; The transceiver sonac receives reflection echo signal and is transferred to preposition amplification circuit; Signal is transferred to the rest-set flip-flop that is made up of 42 input nand gates through amplification, bandpass filtering, peak filtering, shaping, because transceiver sonac close can produce certain ground wave during ultrasonic emitting; Can heavily trigger the pulse shielding ground wave that monostable flipflop produces certain pulsewidth; Modulated square wave during ultrasound emission is received the S end of rest-set flip-flop, and echo that receives and ground wave are received the R end behind the shielding ground wave, and the result of rest-set flip-flop delivers in the microprocessor; Draw turnaround time t, calculate the distance of barrier by programmed algorithm L=V*t/2.Microprocessor to signal processing after the control speech chip drive loudspeaker plays obstacle distance information.Fresnel Lenses focuses on the infrared ray that the wavelength of human body radiation is about 10 μ m on the detector of pyroelectric infrared sensor, and pyroelectric infrared sensor converts the infrared signal of human body electrical signal transfer is amplified in the infrared thermal release electric process chip into, filtering, delay, is transferred to microprocessor after relatively.Microprocessor promotes speaker through the voice output circuit the place ahead messenger is proposed to dodge information.
Battery power supply is accomplished entire circuit is supplied power.
The beneficial effect of this utility model is, and is simple in structure, and advantages of small volume can be designed to portablely, helps the independent safety trip of blind person.
Description of drawings
Below in conjunction with accompanying drawing and embodiment this utility model is further specified.
Fig. 1 is the circuit theory diagrams of this utility model specific embodiments.Among the figure: 1. supersonic oscillations circuit, 2. ultrasound wave modulation circuit, 3. transceiver sonac, 4. preposition amplification circuit; 5. can heavily trigger monostable flipflop, 6.RS trigger, 7. microprocessor; 8. voice output circuit, 9. speaker, 10. Fresnel Lenses; 11. pyroelectric infrared sensor, 12 infrared thermal release electric process chip, 13. battery power supplies.
Fig. 2 is pyroelectric infrared sensor assembled figure, among the figure: 10. Fresnel Lenses, 11. pyroelectric infrared sensors, 14. anti-tampering black plastic cylinders, 15. supports.
Fig. 3 is this utility model machine shape sketch map.Among the figure: 3. transceiver sonac, 9. speaker, 10. Fresnel Lenses, 13. battery power supplies, 16. on and off switch, 17. mainframe boxes.
The specific embodiment
This utility model comprises supersonic oscillations circuit 1, ultrasound wave modulation circuit 2, transceiver sonac 3, preposition amplification circuit 4, can heavily trigger monostable flipflop 5, rest-set flip-flop 6, microprocessor 7, voice output circuit 8, speaker 9, Fresnel Lenses 10, pyroelectric infrared sensor 11, infrared thermal release electric process chip 12, battery power supply 13.As shown in Figure 1; Supersonic oscillations circuit 1NE555 links to each other with transceiver sonac 3NU40A18TR with ultrasound wave modulation circuit 2NE555 simultaneously; The R end of the rest-set flip-flop 6 that is made up of the 74HC00 NAND gate is received in the output of transceiver sonac 3 through preposition integrated amplifier 4BL20106; The output of ultrasound wave modulation circuit 2 connects the S end of rest-set flip-flop 6 simultaneously and can heavily trigger monostable flipflop 5CT74123, and the output that can heavily trigger monostable flipflop 5 is connected to the R end of rest-set flip-flop 6, and microprocessor 789S51 is received in the output of rest-set flip-flop 6; Microprocessor 7 control voice output circuit 8ZY1730; The output of voice output circuit 8 connects speaker 9, and Fresnel Lenses 10 covers on pyroelectric infrared sensor 11RE200B front, and pyroelectric infrared sensor 11 is connected to infrared thermal release electric process chip 12BISS0001; The outfan of infrared thermal release electric process chip 12 is connected to the input of microprocessor 7; It is in 60 ° the black plastic cylinder that pyroelectric infrared sensor is installed in a tapering, direction forward, battery power supply is supplied power to circuitry.
Supersonic oscillations circuit 1 produces the 40KHz transmitted pulse, after 2 modulation of ultrasound wave modulation circuit, acts on transceiver sonac 3, and the ultrasonic frequency of sending is 40KHz, and umber of pulse is 10-20, and the peak-to-peak value of pulse voltage is less than 5V.The echo-signal of ultrasonic pulse acts on transceiver sonac 3, makes it produce faint voltage signal, and numerical value is about tens millivolts.Transceiver sonac 3 links to each other with preposition amplification circuit 4; Faint voltage signal in preposition integrated amplifier through after amplification, bandpass filtering, peak filtering, the shaping output peak value be the square wave about 5V; Behind diode detection, receive the R end of rest-set flip-flop 6, the output of ultrasound wave modulation circuit 2 also links to each other with the S end of rest-set flip-flop 6.Because the close of ultrasonic emitting and reception; Can produce ground wave; The output of ultrasound wave modulation circuit 2 again with can heavily trigger monostable flipflop 5CT74123 and link to each other; The R end of rest-set flip-flop 6 is received in the output that can heavily trigger monostable flipflop 5, with certain pulsewidth shielding ground wave, eliminates and disturbs.Equal ultrasound wave from being emitted to the turnaround time of reception through the rest-set flip-flop output pulse width, this pulse width signal is admitted to the P3.2 interface of microprocessor 7.When microprocessor external interrupt mouth INT0 produces trailing edge, get into interruption subroutine, the intervalometer initialization; Whether the level of inquiry P3.2 is high; Count if height then starts intervalometer 0, finish to stop counting up to high level, the gained time is the skyborne propagation distance of ultrasound wave.Microprocessor is according to echo time (t), and the velocity of sound (V) can calculate distance of obstacle (L), L=V*t/2.
In the time of in the people gets into 60 ° of angles, this utility model the place ahead and 5 meters distances; The wavelength of human body radiation is that the infrared ray of 9-10 μ m sees through Fresnel Lenses 10 entering pyroelectric infrared sensors 11; The filter window of pyroelectric infrared sensor 11 lets the infrared ray of human body radiation pass through effectively; And stop the infrared ray in the visible lights such as sunlight, light to pass through, disturb thereby eliminate.Pyroelectric infrared sensor 11 is the infrared ray amplitude of being transformed into of human body radiation the pulse signal about 1mV.Transfer to infrared thermal release electric process chip 12, signal is input to the P3.3 interface of microprocessor 7 after amplification, filtering, comparison and timing in infrared thermal release electric process chip inside.The output of microprocessor links to each other through one four line SPI interface with voice output circuit 8ZY1730; Microprocessor is through the SPI agreement; Report the corresponding different phonetic signal in different addresses that is stored in the voice module as required easily; The output of voice output circuit 8 is connected to speaker 9, reports content corresponding.
Through the thermal release electric infra-red ray signal of signal processing and P3.3 (INT1) and P3.2 (INT0) interrupt interface that ultrasound echo signal is input to microprocessor 7 respectively, the INT1 interrupt priority level is higher than INT0.When two interruptions produced simultaneously, earlier response INT1 interrupted, carry out its corresponding interruption subroutine after, respond INT0 again and interrupt, wherein, INT0 is that trailing edge triggers.That is this utility model is when detecting pedestrian and the common barrier in the place ahead at the same time, and speaker is reported the information of " asking messenger to dodge " earlier, reports the information of " the place ahead x rice has barrier " again.Battery power supply 13 is made up of the 12V lithium battery, to circuit supply.
In this utility model; The black plastic cylinder that is installed on the pyroelectric infrared sensor support is as shown in Figure 2, and the tapering of black plastic cylinder 14 is 60 °, because the responsive visual field of pyroelectric infrared sensor is about 120 °; This utility model is for avoiding interference, and the design visual field is 60 °.
The profile sketch map of this utility model is as shown in Figure 3, uses very simply, and method is following:
1, opens bonnet, install battery, and then cover tight bonnet by polarity.
When 2, using, can take this utility model, transceiver sonac and pyroelectric infrared sensor and Fresnel Lenses are aimed at the place ahead, turn on the power switch and get final product operate as normal.This shows, very easy to use, respond well.
Claims (2)
1. the blind-guide device that can point out the pedestrian to dodge; It is characterized in that comprising supersonic oscillations circuit [1], ultrasound wave modulation circuit [2]; Transceiver sonac [3], preposition amplification circuit [4], can heavily trigger monostable flipflop [5], rest-set flip-flop [6], microprocessor [7], voice output circuit [8], speaker [9], Fresnel Lenses [10], pyroelectric infrared sensor [11], infrared thermal release electric process chip [12], battery power supply [13]; Transceiver sonac [3] links to each other with preposition amplification circuit [4] with supersonic oscillations circuit [1] simultaneously; Supersonic oscillations circuit [1] links to each other with ultrasound wave modulation circuit [2]; Ultrasound wave by supersonic oscillations circuit [1] produces is launched by transceiver sonac [3] after ultrasound wave modulation circuit [2] modulation; Ultrasound wave modulation circuit [2] simultaneously with rest-set flip-flop [6] with can heavily trigger monostable flipflop [5] and link to each other, microprocessor [7] is received in the output of rest-set flip-flop [6], microprocessor [7] connects voice output circuit [8]; The output of voice output circuit [8] connects speaker [9]; Fresnel Lenses [10] is contained on the pyroelectric infrared sensor [11], and the output of pyroelectric infrared sensor is connected to infrared thermal release electric process chip [12], and the output of infrared thermal release electric process chip is connected to microprocessor [7].
2. the blind-guide device that a kind of pedestrian of prompting according to claim 1 dodges, it is characterized in that pyroelectric infrared sensor [11] around a tapering has been installed is 60 ° of jamming-proof black plastic cylinders [14], installation method is that 502 glue connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205059732U CN202459187U (en) | 2011-12-02 | 2011-12-02 | A blind person guide device prompting pedestrians about making way for the blind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205059732U CN202459187U (en) | 2011-12-02 | 2011-12-02 | A blind person guide device prompting pedestrians about making way for the blind |
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| Publication Number | Publication Date |
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| CN202459187U true CN202459187U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205059732U Expired - Fee Related CN202459187U (en) | 2011-12-02 | 2011-12-02 | A blind person guide device prompting pedestrians about making way for the blind |
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| CN (1) | CN202459187U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105030494A (en) * | 2015-09-15 | 2015-11-11 | 桂林电子科技大学 | Blind people obstacle avoiding device and obstacle avoiding prompt method |
| CN107440294A (en) * | 2017-07-24 | 2017-12-08 | 黄宇翔 | Intelligent antitracking hair fastener |
| WO2018213953A1 (en) * | 2017-05-21 | 2018-11-29 | 李仁涛 | Driverless car obstacle avoidance apparatus and method |
| CN108964784A (en) * | 2017-05-17 | 2018-12-07 | 南台科技大学 | Optical noise cancellation element |
-
2011
- 2011-12-02 CN CN2011205059732U patent/CN202459187U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105030494A (en) * | 2015-09-15 | 2015-11-11 | 桂林电子科技大学 | Blind people obstacle avoiding device and obstacle avoiding prompt method |
| CN108964784A (en) * | 2017-05-17 | 2018-12-07 | 南台科技大学 | Optical noise cancellation element |
| WO2018213953A1 (en) * | 2017-05-21 | 2018-11-29 | 李仁涛 | Driverless car obstacle avoidance apparatus and method |
| CN107440294A (en) * | 2017-07-24 | 2017-12-08 | 黄宇翔 | Intelligent antitracking hair fastener |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20141202 |
|
| EXPY | Termination of patent right or utility model |