CN103598966A - Ultrasonic guide device for blind people - Google Patents
Ultrasonic guide device for blind people Download PDFInfo
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- CN103598966A CN103598966A CN201310532778.2A CN201310532778A CN103598966A CN 103598966 A CN103598966 A CN 103598966A CN 201310532778 A CN201310532778 A CN 201310532778A CN 103598966 A CN103598966 A CN 103598966A
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Abstract
An ultrasonic guide device for blind people belongs to the related field of electronic communication and application of physics. The ultrasonic guide device for the blind people mainly is mainly controlled by an FPGA (Field Programmable Gate Array) control system and comprises an ultrasonic system, the FPGA control system, a voice alarm system and a power supply. By means of the control of a single-chip microcomputer system, when an obstacle is encountered, an ultrasonic module is used for transmitting ultrasonic waves, when echo signals are generated, two receiving ends are used for receiving echo signals by means of ultrasonic ranging and system direction positioning principles, the control system converts the corresponding signals into single signals and relevant data processing is performed, then the processed data is transmitted to a voice and display system, and the power supply is the switch controlling the whole device. Due to the fact that all parts are under the control of a single-chip microcomputer, steady operation can be achieved, and a user can know the distance, the general position and the shape of an obstacle through voice prompt.
Description
Technical field:
The association areas such as this device relates to a kind of brand-new more succinct, and blind-guide device, belongs to electronic communication accurately, physics's application.
Background technology:
Along with popularizing and raising of science and technology, in existing countless science product application and the mankind's daily life.The science product of necessary for human is high request more and more, should practicality again cost at a low price, present product is all towards this future development.
Our device of design is mainly for the inconvenient people of eyes, because present blind person mainly relies on blind-guide device when walking alone.The most conventional device is common walking stick, with it, knocks on the ground, can help blind person to find that 0.5 meter with interior barrier.Its major defect is barrier and the aerial outstanding barrier that can not find more a little further.For example, in the position that is equivalent to head, breast, hang or outstanding object.In addition, blind person can also utilize seeing-eye dog to lead the way, but difficult training and cost are higher.In order better to help blind person's walking, various electronics blind-guide devices are all studied and produced in many countries, but cost is higher mostly, and measure and locate not accurate enough.
Blind guiding system price is on the market all more expensive, so we propose a kind of project organization scheme of novel ultrasound waveguide device for blind person in this research, and it has low cost, practical feature.As long as blind person opens the on & off switch that is arranged on walking stick or is placed on the ultrasound waveguide device for blind person at any position of health just and can launch ultrasound wave when walking, when there is a barrier in blind person the place ahead nearby, ultrasound wave runs into barrier and will reflect, we utilize two receptors of system positioning principle design, at this moment through receptor, signal is passed to analysis circuit, and then make ultrasound waveguide device for blind person on walking stick send the i.e. distance of barrier and blind person present position and barrier orientation and the size substantially now of voice message its analysis through a plurality of systems such as oversampling circuits.Blind person will set up a broad image like this, and it just can continue relieved having advanced.We have added external connecting function in control module, can increase some auxiliary equipments, such as navigation system, by blind people with voice, also can know the particular location of oneself.This device can be improved also can be applied in other range findings or device.
Summary of the invention:
In order to solve the variety of issue under above technical background, the invention provides a kind of brand-new ultrasound wave design.
Technical scheme of the present invention is:
Switch on power and 9 by FPGA control system 5, send the signal of telecommunication, through digital-to-analog conversion system 4 outgoing signals, 12 pairs of signals of booster amplifier boost to amplify and arrive transmitting transducer 1 according to mechanical oscillation mechanism generation ultrasound wave, through the feedback of barrier, by two, accepting transducer 2 accepts, again via amplifilter 3, carry out signal amplification filtering, by digital-to-analogue and analog digital conversion 4, analogue signal is converted to digital signal, at this moment FPGA control system 5 acknowledge(ment) signals, concurrent power transmission signal is converted to digital signal through digital-to-analogue conversion 6 the signal of telecommunication, being sent to 7 pairs of signals of phonetic warning system responds to, voice are carried out to compound display, by subsidiary earphone 8 and built-in speaker 11, pass to blind person's ear, by display panel 13, show.
The present invention can obtain following beneficial effect:
Our device can be arranged on any blind person's running gear, requires like this our device convenient succinct, measures accurately.This device says accurately by mainly containing FPGA system and controls, and installs and mainly comprises ultrasonic system, FPGA control system, voice system and display system, power supply five parts.Wherein by the control of FPGA control system, when running into barrier, ultrasonic system is used for launching ultrasound wave, and when producing echo-signal, we utilize ultrasonic ranging and system attitude positioning principle by two receiving terminals, echo-signal to be received, by control system, corresponding signal is converted to again to the date processing of the line correlation but signal is gone forward side by side, then the transfer of data of its processing to voice system and display system, power supply is the switch of controlling whole device, because above each system is under the control of single-chip microcomputer, steady operation, we just can obtain obstacle distance and the general location shape thereof of voice message, blind person can well cut-through thing like this.In control system, we have increased external connecting function, can identify driving external device, and such as navigator, blind person can know constantly by voice the orientation, address of oneself.
In addition, simple and convenient carrying, can be arranged on any running gear of blind person; Can use the simplest module and chip microcontroller, can integratedly make device volume less, be difficult for breaking down; Can measure and voice message Obstacle Position and size, make blind person set up broad image, be applicable to very much blind person's requirement.
Accompanying drawing explanation:
The principle schematic that Fig. 1 is novel:
In figure: 1, transmitting transducer, 2, accept transducer, 3, amplify filter, 4, analog-digital converter, 5, FPGA control system, 6, digital to analog converter, 7, phonetic warning system, 8, earphone, 9, power supply, 10, external interface, 11, built-in speaker, 12, booster amplifier, 13, display panel.
The specific embodiment:
The present invention will be further described by reference to the accompanying drawings:
By this novel structural representation of Fig. 1, we adopt the Design Mode of single transmitting transducer 1 and two-way receiving transducer 2, through amplifying filter 3, by digital to analog converter 6 or analog-digital converter 4, carrying out analog digital conversion, by FPGA control system 5, control whole transducing and the date processing accepted, the signal being sent by FPGA control system 5 feeds back to phonetic warning system 7 by digital to analog converter 6 again, finally by earphone 8 or built-in speaker 11, pass to blind person's ear and report to the police, can certainly show and be convenient to other use by display panel 13.
We are optimized each system of team, can be the most best carry out information processing feedback, voice and digital processing could feed back to blind person timely like this, play the effect of accurate guide.
In addition, power supply 9, carries out on-off control and electric current supply to whole device.
Our FPGA control system 5 also has external interface 10 simultaneously, can access the equipment of some useful tyres, such as location, guider etc., also can know like this oneself particular location and address by blind people with voice.
Claims (3)
1. a ultrasound waveguide device for blind person, comprise ultrasonic system, FPGA control system, phonetic warning system (7) and power supply, it is characterized in that: switch on power (9) are connected with the signal of telecommunication input circuit of FPGA control system (5), the input of the output circuit end of FPGA control system (5) and digital to analog converter (4), digital to analog converter (4) is to the signal amplification of boosting, be connected with the input of transmitting transducer (1), according to mechanical oscillation mechanism, produce ultrasound wave, through the feedback of barrier, by two, accepting transducer (2) accepts, and be connected with the input of two amplifilters (3) respectively, carry out signal amplification filtering, amplifilter (3) outfan is connected with digital-to-analogue and analog-digital converter (4) inlet circuit again, at this moment digital-to-analogue and analog digital conversion (4) output circuit is connected with FPGA control system (5) signal of telecommunication receiving circuit, the output circuit of FPGA control system (5) with through digital to analog converter (6) input, be connected, the outfan of digital to analog converter (6) is connected with the input circuit of phonetic warning system (7), phonetic warning system (7) attaches earphone (8), built-in speaker (11) and display panel (13).
2. a kind of ultrasound waveguide device for blind person according to claim 1 is characterized in that: due to the position of barrier and in different size, according to system attitude positioning principle, so feed back to the ultrasonic signal of accepting transducer (2), there is time difference, according to the number of time difference, can draw cardinal principle orientation and the shape of barrier.
3. ultrasound waveguide device for blind person according to claim 1, it is characterized in that: described ultrasonic system comprises transmitting transducer (1) and accepts transducer (2), the phonetic warning system that voice system comprises (7), earphone (8) and built-in speaker (11), power supply (9) accesses whole device by the power interface of FPGA control system (5), FPGA control system (5) comprises fpga chip, transmitting signal of telecommunication circuit, receives signal of telecommunication circuit and external signal of telecommunication circuit, and by there being external interface (11) access external equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310532778.2A CN103598966A (en) | 2013-10-31 | 2013-10-31 | Ultrasonic guide device for blind people |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310532778.2A CN103598966A (en) | 2013-10-31 | 2013-10-31 | Ultrasonic guide device for blind people |
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| Publication Number | Publication Date |
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| CN103598966A true CN103598966A (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310532778.2A Pending CN103598966A (en) | 2013-10-31 | 2013-10-31 | Ultrasonic guide device for blind people |
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| CN (1) | CN103598966A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104083251A (en) * | 2014-06-24 | 2014-10-08 | 吕志雪 | Intelligent glasses for blind person |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201055497Y (en) * | 2007-05-28 | 2008-05-07 | 罗来安 | Safety auxiliary device for visually impaired people walking |
| CN101199441A (en) * | 2006-12-15 | 2008-06-18 | 游志军 | Sterosonic ultrasonic blindman-helping tool |
| CN202920467U (en) * | 2012-11-05 | 2013-05-08 | 柴永斌 | Environmental perception system for blind person |
-
2013
- 2013-10-31 CN CN201310532778.2A patent/CN103598966A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101199441A (en) * | 2006-12-15 | 2008-06-18 | 游志军 | Sterosonic ultrasonic blindman-helping tool |
| CN201055497Y (en) * | 2007-05-28 | 2008-05-07 | 罗来安 | Safety auxiliary device for visually impaired people walking |
| CN202920467U (en) * | 2012-11-05 | 2013-05-08 | 柴永斌 | Environmental perception system for blind person |
Non-Patent Citations (1)
| Title |
|---|
| 符涛涛: "新型生物声纳探测装置的设计与优化", 《中国优秀硕士论文电子期刊网》, 30 June 2013 (2013-06-30) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104083251A (en) * | 2014-06-24 | 2014-10-08 | 吕志雪 | Intelligent glasses for blind person |
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Application publication date: 20140226 |