CN109998875A - A kind of two-dimensional ultrasound blind-guiding stick based on the stimulation of voltage dot matrix - Google Patents
A kind of two-dimensional ultrasound blind-guiding stick based on the stimulation of voltage dot matrix Download PDFInfo
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- CN109998875A CN109998875A CN201910391199.8A CN201910391199A CN109998875A CN 109998875 A CN109998875 A CN 109998875A CN 201910391199 A CN201910391199 A CN 201910391199A CN 109998875 A CN109998875 A CN 109998875A
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- guiding stick
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- 230000000638 stimulation Effects 0.000 title claims abstract description 34
- 238000002604 ultrasonography Methods 0.000 title claims abstract description 25
- 239000011159 matrix material Substances 0.000 title claims abstract description 21
- 230000004936 stimulating effect Effects 0.000 claims abstract description 26
- 230000005284 excitation Effects 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 230000005669 field effect Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 5
- 210000001367 artery Anatomy 0.000 claims description 4
- 210000003462 vein Anatomy 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 abstract description 8
- 238000009826 distribution Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000004438 eyesight Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005424 photoluminescence Methods 0.000 description 4
- 230000015541 sensory perception of touch Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000000697 sensory organ Anatomy 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 241001166076 Diapheromera femorata Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000013707 sensory perception of sound Effects 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000036413 temperature sense Effects 0.000 description 1
- 230000036410 touch Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H3/00—Appliances for aiding patients or disabled persons to walk about
- A61H3/06—Walking aids for blind persons
- A61H3/061—Walking aids for blind persons with electronic detecting or guiding means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H3/00—Appliances for aiding patients or disabled persons to walk about
- A61H3/06—Walking aids for blind persons
- A61H3/068—Sticks for blind persons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H3/00—Appliances for aiding patients or disabled persons to walk about
- A61H3/06—Walking aids for blind persons
- A61H3/061—Walking aids for blind persons with electronic detecting or guiding means
- A61H2003/063—Walking aids for blind persons with electronic detecting or guiding means with tactile perception
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Pain & Pain Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Therapy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Electrotherapy Devices (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of two-dimensional ultrasound blind-guiding sticks based on the stimulation of voltage dot matrix, blind-guiding stick control circuit includes single-chip microcontroller, signal adapter, multiple ultrasonic distance measuring modules, multiple pulsqe distributors, stimulation voltage generator, stimulation voltage generator includes multiple driving circuits, step-up transformer B, motivate switching tube Q3, primary regulating circuit, single-chip microcomputer output is electrically connected by signal adapter and multiple ultrasonic distance measuring modules, single-chip microcomputer output is also connect with multiple pulsqe distributor input terminals, multiple pulsqe distributor output ends are separately connected multiple driving circuits, multiple driving circuit output ends and step-up transformer B secondary output end are all connected with stimulating electrode, step-up transformer B primary is separately connected excitation switching tube Q3 output end and primary regulating circuit output end, excitation switching tube Q3 is also connected with Single-chip microcontroller.Investigative range of the present invention expands, and blind person is made to perceive the Two dimensional Distribution of barrier in a certain range, detectable mobile target.
Description
Technical field
The present invention relates to the field of medical instrument technology more particularly to a kind of two-dimensional ultrasound guides based on the stimulation of voltage dot matrix
Cane.
Background technique
Blind-guiding stick is used to help the barrier that front nearby ground is detected in blind person's trip, past be usually one simply
There is electronics blind-guiding stick in recent years in walking stick.Electronics blind-guiding stick relatively mostly uses ultrasonic distance measurement principle.It is met using ultrasonic wave
Back wave, and the ultrasonic wave characteristic that spread speed is basically unchanged in air can be generated to barrier.As long as measuring ultrasonic wave
Be carved into from transmitting one and encounter the back wave of barrier generation and return to time of original launch point, so that it may calculate barrier away from
From.Ultrasonic wave transmitting, the supersonic sounding circuit for receiving and producing the back echo propagation time have had modular product.Greatly
Most electronics blind-guiding sticks measure obstacle distance using ultrasound measurement module, are then prompted by modes such as vibration, voices, to rise
To the effect of guide.But these products can only provide the information of roadblock on single direction, the detection visual field is narrow.
Electronics blind-guiding stick product also is imaged with microcam, obtains image spy by image analysis software
Sign, is then described and is reminded with voice.But language can only describe some characteristic informations of environment, not intuitive and tool
Body.
The sense organ of people has vision, hearing, touch, smells, is taste, cold and hot etc., and wherein the information content of visual reception is the largest.Vision
The two-dimensional silhouette information and light and shade and color information of object can be perceived.After visually impaired, without other sense organ energy
The effect of enough visions of substitution completely.In other feelings, Two dimensional Distribution is presented in only tactile and temperature sense on human body.Especially have
It is tactile, the tactile at some positions of human body is very sensitive and fine.By certain method, it is possible to blind person be allowed to pass through tactile
Two-dimensional signal is perceived, so that part substitutes the two-dimensional signal perceptional function of vision.
In various tactile sense reproduction methods, flexible, realization device is simple, pulse ginseng due to stimulating for the tactile that electro photoluminescence generates
Number controllable precise the features such as and by researcher's extensive concern.Electric touch is that simulated skin receptor generates sense for physical stimulation
By the principle of current potential, boost pulse is acted on by skin receptor by electrode, and by changing stimulation arteries and veins in stimulating course
The parameters such as amplitude, the frequency of punching and a kind of tactile sense reproduction method for making one to generate different sensations.But there is presently no one
Kind allows blind person to pass through the ultrasonic blind guide cane that boost pulse stimulates the tactilely-perceptible two-dimensional signal of skin well.
Summary of the invention
In view of the above drawbacks of the prior art, technical problem to be solved by the invention is to provide one kind to be based on electrical voltage point
The two-dimensional ultrasound blind-guiding stick of battle array stimulation, by way of the range of increase ultrasonic listening and by blind person's skin electric touch,
Can with acquired disturbance object in a region real-time Two dimensional Distribution information, to help blind person preferably to perceive environment.
To achieve the above object, the present invention provides a kind of two-dimensional ultrasound blind-guiding sticks based on the stimulation of voltage dot matrix, including
Blind-guiding stick ontology and the stimulating electrode dot matrix being arranged on blind-guiding stick ontology, and design is in the intrinsic control electricity of blind-guiding stick
Road, the control circuit include single-chip microcontroller, signal adapter, multiple ultrasonic distance measuring modules, multiple pulsqe distributors, stimulation electricity
At the beginning of pressing generator, the stimulation voltage generator to include multiple driving circuits, step-up transformer B, excitation switching tube Q3, transformer
Grade regulating circuit, the single-chip microcomputer output are electrically connected by signal adapter and multiple ultrasonic distance measuring modules, the list
Piece machine output end is also connect with multiple pulsqe distributor input terminals, and the multiple pulsqe distributor output end is separately connected multiple drives
Dynamic circuit, the multiple driving circuit output end and step-up transformer B secondary output end are all connected with stimulating electrode, and the boosting becomes
Depressor B primary is separately connected excitation switching tube Q3 output end and primary regulating circuit output end, the excitation switching tube
Q3 input terminal connects single-chip microcontroller.
Preferably, the ultrasonic distance measuring module is N number of, and the stimulating electrode array has N column stimulating electrode, and each column is pierced
Sharp electrode has M stimulating electrode, and the value of M is the distance resolution that basis needs in effective detection range, then M=L/S,
Middle L is effective detection range, and S is distance resolution.
Preferably, the signal adapter model CD4052.
Preferably, the pulsqe distributor is the decoder of model 74HC138.
Preferably, the driving circuit includes photoisolator PVI1050N and N-channel field-effect tube CS1N60, the light
Electric isolator PVI1050N input terminal connects pulsqe distributor output end, and the PVI1050N output end connects N-channel field-effect
The grid and source electrode of pipe CS1N60, the grid and source electrode of the N-channel field-effect tube CS1N60 are also connected with 1M Ω resistance, the N
The drain electrode of channel field-effect pipe CS1N60 connects stimulating electrode input terminal, and the source electrode of the CS1N60 connects step-up transformer B times
Grade ground terminal.
Preferably, the primary regulating circuit includes adjustable resistance W, NPN triode Q1, PNP triode Q2, institute
The adjustable end adjustable resistance W is stated by resistance R1 connection NPN triode Q1, the base stage of PNP triode Q2, the NPN triode Q1,
The emitter of PNP triode Q2 connects step-up transformer B primary one end, and the hair of the NPN triode Q1, PNP triode Q2
Emitter-base bandgap grading connection is also connected with the one end capacitor C1, capacitor C1 other end ground connection, and the step-up transformer B primary other end connection excitation is opened
Pipe Q3 drain electrode is closed, the NPN triode Q1 collector passes through switch SW connection 5V power supply, the collector of the PNP triode Q2
With excitation switching tube Q3 source electrode ground connection, the excitation switching tube Q3 grid connects single-chip microcontroller.
Preferably, diode is connected between the step-up transformer B primary.
Preferably, the stimulating electrode accounts for 10~20cm of area2, two neighboring stimulating electrode interval about 5~10mm
The beneficial effects of the present invention are:
1, using the multi beam ultrasonic scanning of Two dimensional Distribution, the investigative range of electronics blind-guiding stick is made to be expanded to a face.
2, two-dimensional lattice electro photoluminescence is applied, so that blind person is perceived the Two dimensional Distribution of barrier in a certain range, increases greatly
The perception information to barrier is added.
3, blind person's electro photoluminescence information, the movement of barrier within this range are given based on supersonic sounding incessantly and in real time
It can also be perceived, make detection can be for mobile target.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
Fully illustrate the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is that the present invention is based on the two-dimensional ultrasound blind-guiding stick functional block diagrams that voltage dot matrix stimulates；
Fig. 2 is that the present invention is based on the two-dimensional ultrasound blind-guiding stick specific implementation circuit diagrams that voltage dot matrix stimulates.
Specific embodiment
As shown in Figure 1, a kind of two-dimensional ultrasound blind-guiding stick based on the stimulation of voltage dot matrix, including blind-guiding stick ontology and setting exist
Stimulating electrode dot matrix on blind-guiding stick ontology, and design, in the intrinsic control circuit of blind-guiding stick, the control circuit includes
Single-chip microcontroller, signal adapter, multiple ultrasonic distance measuring modules, multiple pulsqe distributors, stimulation voltage generator, the stimulation electricity
Pressure generator includes multiple driving circuits, step-up transformer B, excitation switching tube Q3, primary regulating circuit, the monolithic
Machine output end is electrically connected by signal adapter and multiple ultrasonic distance measuring modules, the single-chip microcomputer output also with multiple arteries and veins
The connection of distributor input terminal is rushed, the multiple pulsqe distributor output end is separately connected multiple driving circuits, the multiple driving
Circuit output end and step-up transformer B secondary output end are all connected with stimulating electrode, and the step-up transformer B primary is separately connected sharp
Switching tube Q3 output end and primary regulating circuit output end are encouraged, the excitation switching tube Q3 input terminal connects single-chip microcontroller.
Fig. 2 is the two-dimensional ultrasound blind-guiding stick specific implementation stimulated based on voltage dot matrix.Wherein, U1 is microcontroller.
Ultrasound measurement module has 4 tunnels.
U1 is single-chip microcontroller, and MPSYS is the abbreviation of microprocessor system in figure, here general 8 single-chip microcontrollers, such as
MCS51.U2 is signal adapter, model CD4052.U3~U7 is 5 model 74HC138 decoders, composition pulse choice point
Orchestration.B is step-up transformer, and Q3 is that it motivates switching tube.The regulating circuit of the composition primary such as Q1, Q2, W.
Q4~Q35 is the switch control pipe of 32 stimulating electrodes, and U8~U39 is 32 photoisolators, composition stimulation electricity
Generator driving circuit is pressed, photoisolator model is preferably PVI1050N, and N-channel field-effect tube model is preferably CS1N60,
Photoisolator PVI1050N input terminal connects pulsqe distributor output end, and PVI1050N output end connects N-channel field-effect tube
The grid and source electrode of CS1N60, the grid and source electrode of N-channel field-effect tube CS1N60 are also connected with 1M Ω resistance, N-channel field-effect
The drain electrode of pipe CS1N60 connects stimulating electrode input terminal, and the source electrode of CS1N60 connects step-up transformer B secondary ground end.
Microcontroller takes turns starting each ultrasound measurement module by signal adapter, and receives and resolve their ranging
Information.It exports control code according to ranging information, selects certain road stimulation circuit open-minded through pulse choice distributor.Microcontroller is same
When export the square-wave signal of certain frequency, it is primary through Q3 driver transformer, obtain related electrode centainly
The voltage output of intensity and frequency.The adjustable stimulation voltage of knob W on panel, i.e. stimulus intensity.
In the regulating circuit of the compositions such as Q1, Q2, W, C1, adjusting of available one of the adjustable end of W between 0 to+5V
Voltage, the base stage of Q1, Q2 are added to by R1, and the effect of R1 is limitation electric current.This adjusts the charging voltage ratio on voltage and C1
Compared with.When adjusting the charging voltage that voltage is higher than on C1, Q1 conducting, battery is charged by the collector of Q1 to emitter to C1,
Until the charging voltage on C1 is approximately equal to adjusting voltage；When adjusting the charging voltage that voltage is lower than on C1, Q2 is connected, on C1
Charging voltage is discharged by the emitter of Q2 to collector to ground, until the charging voltage on C1 is approximately equal to adjusting voltage.So
Charging voltage on the adjustable C1 of W, C1 are storage capacitors, its charging voltage exactly when exciter tube Q3 is opened, gives transformation
The primary voltage of device B.Transformer boosts by the fixed proportion of 1:10, obtains the stimulation voltage to human body in secondary.Because on C1
Voltage it is adjustable, so the stimulation voltage to human body can also be adjusted.
The diode that transformer B primary connects, its effect are the impacts for inhibiting transformer inverse peak voltage to Q3.If no
Diode, when Q3 conducting, primary is generated just lower negative resistance by negative voltage drive just lower on one, inside
Voltage；Resistance voltage positive under bearing, this voltage and the voltage phase on C1 are generated when Q3 cut-off, inside primary
Deng, and with C1 Voltage Series so that impact of the Q3 source electrode by 2 times of voltage, challenges to its voltage resistance.If connect
Upper diode, in Q3 cut-off, generate inside primary it is upper it is negative under positive resistance voltage will be released by diode current flow,
To protect Q3 from higher voltge surge.
Ultrasonic wave transmitting and reception are completed with ultrasonic distance measuring module.With multiple ultrasound measurement modules angle at regular intervals
Distribution.The determination of this interval angles is the dispersion angle (such as 15 degree) of the ultrasonic beam effective energy according to each module,
It enables them to neither overlapping effectively cover an angular range (for example 4 ultrasound measurement modules cover 60 degree) with not slipping again.
Two-dimentional voltage stimulation dot matrix is to contact human skin with small metallic conductor, passes through transmitting certain frequency and electricity
The electric pulse waveform of pressure gives human body electro photoluminescence.The space of the corresponding supersonic sounding of the distribution of stimulation point, i.e., one fan-shaped supersonic sounding
Space, corresponding fan-shaped electrocutaneous stimulation region.The origin of fan-shaped vertex correspondence detection range, and fan-shaped arc top is corresponding
The maximum distance boundary of investigative range, fan-shaped both sides correspond to the right boundary of investigative range.When with N number of ultrasound measurement module
When, stimulating electrode has N column, their arrangement angle is consistent with ultrasonic beam arrangement pitch angle.Each column have M thorn respectively again
Swash point.The value of M is according to the distance resolution needed in effective detection range.Such as effective detection range is L, distance point
Resolution requires to be S, then M=L/S.General ultrasound measurement module effective detection range can be in 4m or more.All stimulating electrodes
Electric current by one array top public electrode be formed into a loop.All stimulating electrodes only account for 10~20cm2Range is adjacent
Two electrode gap about 5~10mm, can experience these stimulations with palm.
The foregoing describe preferred embodiments of the invention.It should be appreciated that those skilled in the art are without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all those skilled in the art of the present technique according to
Design of the invention passes through the available technical side of logical analysis, reasoning, or a limited experiment on the basis of existing technology
Case, all should be within the scope of protection determined by the claims.
Claims (8)
1. a kind of two-dimensional ultrasound blind-guiding stick based on the stimulation of voltage dot matrix, it is characterised in that: exist including blind-guiding stick ontology and setting
Stimulating electrode dot matrix on blind-guiding stick ontology, and design, in the intrinsic control circuit of blind-guiding stick, the control circuit includes
Single-chip microcontroller, signal adapter, multiple ultrasonic distance measuring modules, multiple pulsqe distributors, stimulation voltage generator, the stimulation electricity
Pressure generator includes multiple driving circuits, step-up transformer B, excitation switching tube Q3, primary regulating circuit, the monolithic
Machine output end is electrically connected by signal adapter and multiple ultrasonic distance measuring modules, the single-chip microcomputer output also with multiple arteries and veins
The connection of distributor input terminal is rushed, the multiple pulsqe distributor output end is separately connected multiple driving circuits, the multiple driving
Circuit output end and step-up transformer B secondary output end are all connected with stimulating electrode, and the step-up transformer B primary is separately connected sharp
Switching tube Q3 output end and primary regulating circuit output end are encouraged, the excitation switching tube Q3 input terminal connects single-chip microcontroller.
2. a kind of two-dimensional ultrasound blind-guiding stick based on the stimulation of voltage dot matrix as described in claim 1, it is characterised in that: described super
Sound ranging module be it is N number of, the stimulating electrode array has N column stimulating electrode, and each column stimulating electrode has M stimulating electrode, M
Value be the then M=L/S according to the distance resolution that is needed in effective detection range, wherein L is effective detection range, and S is
Distance resolution.
3. a kind of two-dimensional ultrasound blind-guiding stick based on the stimulation of voltage dot matrix as described in claim 1, it is characterised in that: the letter
Number converter model is CD4052.
4. a kind of two-dimensional ultrasound blind-guiding stick based on the stimulation of voltage dot matrix as described in claim 1, it is characterised in that: the arteries and veins
Rush the decoder that distributor is model 74HC138.
5. a kind of two-dimensional ultrasound blind-guiding stick based on the stimulation of voltage dot matrix as described in claim 1, it is characterised in that: the drive
Dynamic circuit includes photoisolator PVI 1050N and N-channel field-effect tube CS1N60, the photoisolator PVI 1050N defeated
Enter end connection pulsqe distributor output end, the grid of the PVI 1050N output end connection N-channel field-effect tube CS1N60 and source
Pole, the grid and source electrode of the N-channel field-effect tube CS1N60 are also connected with 1M Ω resistance, the N-channel field-effect tube CS1N60
Drain electrode connect stimulating electrode input terminal, the source electrode of the CS1N60 connects step-up transformer B secondary ground end.
6. a kind of two-dimensional ultrasound blind-guiding stick based on the stimulation of voltage dot matrix as described in claim 1, it is characterised in that: the change
Depressor primary regulating circuit includes adjustable resistance W, NPN triode Q1, PNP triode Q2, and the adjustable end adjustable resistance W passes through
Resistance R1 connection NPN triode Q1, the base stage of PNP triode Q2, the emitter company of the NPN triode Q1, PNP triode Q2
Step-up transformer B primary one end is connect, and the emitter connection of the NPN triode Q1, PNP triode Q2 are also connected with capacitor C1 mono-
End, capacitor C1 other end ground connection, the step-up transformer B primary other end connection excitation switching tube Q3 drain electrode, tri- pole NPN
Pipe Q1 collector is grounded by switch SW connection 5V power supply, the collector and excitation switching tube Q3 source electrode of the PNP triode Q2,
The excitation switching tube Q3 grid connects single-chip microcontroller.
7. a kind of two-dimensional ultrasound blind-guiding stick based on the stimulation of voltage dot matrix as claimed in claim 7, it is characterised in that: the liter
Diode is connected between pressure transformer B primary.
8. a kind of two-dimensional ultrasound blind-guiding stick based on the stimulation of voltage dot matrix as described in claim 1, it is characterised in that: the thorn
Sharp electrode accounts for 10~20cm of area2, two neighboring stimulating electrode interval about 5~10mm.
Priority Applications (1)
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|---|---|---|---|
| CN201910391199.8A CN109998875B (en) | 2019-05-11 | 2019-05-11 | Two-dimensional ultrasonic guide crutch based on voltage lattice stimulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910391199.8A CN109998875B (en) | 2019-05-11 | 2019-05-11 | Two-dimensional ultrasonic guide crutch based on voltage lattice stimulation |
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| CN109998875A true CN109998875A (en) | 2019-07-12 |
| CN109998875B CN109998875B (en) | 2024-06-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01146561A (en) * | 1987-12-02 | 1989-06-08 | Tokyo Electric Co Ltd | Biostimulating apparatus |
| CN202761651U (en) * | 2012-08-02 | 2013-03-06 | 河海大学 | Novel intelligent guide cane |
| CN103637901A (en) * | 2013-12-27 | 2014-03-19 | 哈尔滨工业大学 | Blind guide crutch based on ultrasonic ranging |
| CN207804585U (en) * | 2017-06-28 | 2018-09-04 | 浙江大学 | Ultrasonic Intelligent blind-guiding stick |
| CN211272120U (en) * | 2019-05-11 | 2020-08-18 | 上海健康医学院 | Two-dimensional ultrasonic blind guiding stick based on voltage lattice stimulation |
-
2019
- 2019-05-11 CN CN201910391199.8A patent/CN109998875B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01146561A (en) * | 1987-12-02 | 1989-06-08 | Tokyo Electric Co Ltd | Biostimulating apparatus |
| CN202761651U (en) * | 2012-08-02 | 2013-03-06 | 河海大学 | Novel intelligent guide cane |
| CN103637901A (en) * | 2013-12-27 | 2014-03-19 | 哈尔滨工业大学 | Blind guide crutch based on ultrasonic ranging |
| CN207804585U (en) * | 2017-06-28 | 2018-09-04 | 浙江大学 | Ultrasonic Intelligent blind-guiding stick |
| CN211272120U (en) * | 2019-05-11 | 2020-08-18 | 上海健康医学院 | Two-dimensional ultrasonic blind guiding stick based on voltage lattice stimulation |
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| Publication number | Publication date |
|---|---|
| CN109998875B (en) | 2024-06-11 |
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