CN107966703A - The based reminding method of blind-guide brick based on ultrasonic measurement - Google Patents
The based reminding method of blind-guide brick based on ultrasonic measurement Download PDFInfo
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- CN107966703A CN107966703A CN201711233973.XA CN201711233973A CN107966703A CN 107966703 A CN107966703 A CN 107966703A CN 201711233973 A CN201711233973 A CN 201711233973A CN 107966703 A CN107966703 A CN 107966703A
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- 238000005259 measurement Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000011449 brick Substances 0.000 title claims abstract description 21
- 230000035939 shock Effects 0.000 claims abstract description 34
- 230000004888 barrier function Effects 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 2
- 230000005611 electricity Effects 0.000 claims 1
- 150000002500 ions Chemical class 0.000 claims 1
- 238000012913 prioritisation Methods 0.000 description 5
- 238000002604 ultrasonography Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
-
- 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
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- Health & Medical Sciences (AREA)
- Remote Sensing (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Epidemiology (AREA)
- Rehabilitation Therapy (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Physics & Mathematics (AREA)
- Pain & Pain Management (AREA)
- Physical Education & Sports Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Computer Networks & Wireless Communication (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
The invention discloses a kind of based reminding method of the blind-guide brick based on ultrasonic measurement, blind-guide brick includes crutch body, the first to the second shock module, sound prompting module, the first to the second ultrasonic measurement module, control module, power module and water droplet inductor；First, second shock module is separately positioned on the left side and right side of crutch body hand grip portion；First, second ultrasonic measurement module level is arranged on the front on crutch body top；Water droplet inductor is arranged on the bottom of crutch body；Control module, power module are arranged in crutch body.During work, control module controls sound prompting module to work when water droplet inductor has sensed water, and controls the first shock module, the second shock module to work according to the first ultrasonic measurement module, the sensed data of the second ultrasonic measurement module.Present invention design is simple, easy to use, is capable of the azimuth-range of active warning blind person's barrier, and whether can have water in front of active warning blind person.
Description
Technical field
The present invention relates to guide electronic field, more particularly to a kind of prompting side of the blind-guide brick based on ultrasonic measurement
Method.
Background technology
Crutch, a kind of simple apparatus for aiding in walking, is typically a wooden or metal rod.Usually old man and deformity
People uses.
Existing crutch can only generally be used for visiting the barrier within crutch length distance for blind person
Survey, it is impossible to actively tell direction and the distance of blind person's barrier.
And existing crutch is unable to whether have water in front of reminding blind.
Sound wave is to belong to one of classification of sound, belongs to mechanical wave, and sound wave refers to a kind of compressional wave that human ear can be experienced, its
Frequency range is 16Hz-20KHz.Just it is called infrasound when the frequency of sound wave is less than 16Hz, is then known as ultrasonic wave higher than 20KHz
Sound wave.
Its good directionality, penetration capacity is strong, is easily obtained the acoustic energy relatively concentrated, and propagation distance is remote in water, available for surveying
Away from, test the speed, clean, weld, rubble, sterilizing etc..
Ultrasonic wave can be divided into detection ultrasound and power ultrasonic according to principle point.In medicine, military affairs, industry, agricultural
On have many applications, ultrasonic wave is gained the name because of the upper limit of hearing that its lower-frequency limit is approximately equal to people.
Ultrasonic transmitter launches ultrasonic wave to a direction, starts timing while emission time, ultrasonic wave is in sky
Propagated in gas, barrier is encountered in way and just returns to come immediately, ultrasonic receiver receives back wave and just stops timing immediately.Ultrasound
The aerial spread speed of ripple is 340m/s, according to the time t of timer record, it is possible to calculate launch point away from barrier
Distance (s), i.e.,：s=340t/2 .Here it is so-called time difference telemetry.
The principle of ultrasonic ranging is to be using the aerial spread speed of ultrasonic wave it is known that measurement sound wave is after transmitting
Run into the time that barrier reflects, according to transmitting and receive time difference calculate launch point to barrier actually away from
From.It can be seen from the above that ultrasonic ranging principle and Principles of Radar are the same.
The formula of ranging is expressed as：L=C×T
L is the distance length of measurement in formula；C is the aerial spread speed of ultrasonic wave；T is the time difference that measurement distance is propagated
(T is the half for being transmitted to receiving time numerical value).
Ultrasonic ranging is mainly used in the range measurement of reversing prompting, construction site, industry spot etc., although current
Hundred meters can be reached on ranging range, but the precision measured often can only achieve centimetre scale.
Since ultrasonic wave is easy to that directional transmissions, good directionality, intensity are easy to control, need not directly be contacted with object being measured
The advantages of, it is the promising approach as liquid height measuring.Need to reach millimetre-sized measurement essence in accurate level gauging
Degree, but ultrasonic ranging application-specific integrated circuit domestic at present is all the measurement accuracy of only Centimeter Level.By analyzing ultrasound
Ripple range error Producing reason, improves time of measuring difference and arrives Microsecond grade, and carries out Acoustic Wave Propagation with LM92 temperature sensors
After the compensation of speed, high-precision ultrasonic rangefinder can reach millimetre-sized measurement accuracy.
The content of the invention
The technical problems to be solved by the invention are to be directed to the defects of involved in background technology, there is provided one kind is based on super
The based reminding method of the blind-guide brick of acoustic measurement.
The present invention uses following technical scheme to solve above-mentioned technical problem：
The based reminding method of blind-guide brick based on ultrasonic measurement, the blind-guide brick based on ultrasonic measurement include crutch sheet
Body, the first shock module, the second shock module, sound prompting module, the first ultrasonic measurement module, the second ultrasonic measurement mould
Block, control module, power module and water droplet inductor；
First shock module, the second shock module are separately positioned on the left side and right side of the crutch body hand grip portion；
The first ultrasonic measurement module, the second ultrasonic measurement module level are being arranged on the crutch body top just
Face；
The water droplet inductor is arranged on the bottom of the crutch body；
The sound prompting module is arranged in crutch body, and control module, power module are arranged in crutch body；
The control module respectively with power module, the first shock module, the second shock module, sound prompting module, the first surpass
Acoustic measurement module, the second ultrasonic measurement module, water droplet inductor are electrically connected；
The based reminding method comprises the steps of：
Step 1）, the first ultrasonic measurement module, the second ultrasonic measurement module measurement periphery barrier and crutch body
The distance between and orientation, and pass it to the control module；
Step 2）, the water droplet inductor sensing crutch body bottom whether there is water, and pass it to the control module；
Step 3）, the control module is according to the control sound prompting module work of the sensed data of water droplet inductor：If crutch
Body bottom portion has water, and control module control sound prompting module sends the prompting of " there is water in front "；
Step 4）, control module is according to the orientation between barrier and crutch body, setting operational module；
Step 4.1）If the first shock module, the second shock module in the front of crutch body, are set as work by barrier
Make module；
Step 4.2）If the first shock module in the left side of crutch body, is set as operational module by barrier；
Step 4.3）If the second shock module on the right side of crutch body, is set as operational module by barrier；
Step 5）, control module by the distance between barrier and crutch body respectively with default first distance threshold, second
Distance threshold is compared, wherein, first distance threshold is more than second distance threshold value；
Step 5.1）If the distance between barrier and crutch body are less than first distance threshold and more than or equal to described
Second distance threshold value, control module control operational module are shaken according to default first vibration frequency；
Step 5.2）If the distance between barrier and crutch body are less than the second distance threshold value, control module control
Operational module is shaken according to default second vibration frequency, and second vibration frequency is more than first vibration frequency.
As the further prioritization scheme of based reminding method of blind-guide brick of the present invention based on ultrasonic measurement, the control
The processor of module uses AVR series monolithics.
As the further prioritization scheme of based reminding method of blind-guide brick of the present invention based on ultrasonic measurement, the control
The processor of module uses Atmega168PA microcontrollers.
As the further prioritization scheme of based reminding method of blind-guide brick of the present invention based on ultrasonic measurement, the power supply
Module uses lithium ion battery.
As the further prioritization scheme of based reminding method of blind-guide brick of the present invention based on ultrasonic measurement, the lithium from
The model ICR18650 of sub- battery.
As the further prioritization scheme of based reminding method of blind-guide brick of the present invention based on ultrasonic measurement, described first
Distance threshold is 2 meters, and the second distance threshold value is 0.5 meter.
The present invention compared with prior art, has following technique effect using above technical scheme：
1. it is simple in structure, it is easy to use；
2. it is capable of the azimuth-range of active warning blind person's barrier；
3. whether there can be water in front of active warning blind person.
Embodiment
Technical scheme is described in further detail below：
The invention discloses a kind of based reminding method of the blind-guide brick based on ultrasonic measurement, the leading based on ultrasonic measurement
Blind crutch include crutch body, the first shock module, the second shock module, sound prompting module, the first ultrasonic measurement module,
Second ultrasonic measurement module, control module, power module and water droplet inductor；
First shock module, the second shock module are separately positioned on the left side and right side of the crutch body hand grip portion；
The first ultrasonic measurement module, the second ultrasonic measurement module level are being arranged on the crutch body top just
Face；
The water droplet inductor is arranged on the bottom of the crutch body；
The sound prompting module is arranged in crutch body, and control module, power module are arranged in crutch body；
The control module respectively with power module, the first shock module, the second shock module, sound prompting module, the first surpass
Acoustic measurement module, the second ultrasonic measurement module, water droplet inductor are electrically connected；
The based reminding method comprises the steps of：
Step 1）, the first ultrasonic measurement module, the second ultrasonic measurement module measurement periphery barrier and crutch body
The distance between and orientation, and pass it to the control module；
Step 2）, the water droplet inductor sensing crutch body bottom whether there is water, and pass it to the control module；
Step 3）, the control module is according to the control sound prompting module work of the sensed data of water droplet inductor：If crutch
Body bottom portion has water, and control module control sound prompting module sends the prompting of " there is water in front "；
Step 4）, control module is according to the orientation between barrier and crutch body, setting operational module；
Step 4.1）If the first shock module, the second shock module in the front of crutch body, are set as work by barrier
Make module；
Step 4.2）If the first shock module in the left side of crutch body, is set as operational module by barrier；
Step 4.3）If the second shock module on the right side of crutch body, is set as operational module by barrier；
Step 5）, control module by the distance between barrier and crutch body respectively with default first distance threshold, second
Distance threshold is compared, wherein, first distance threshold is more than second distance threshold value；
Step 5.1）If the distance between barrier and crutch body are less than first distance threshold and more than or equal to described
Second distance threshold value, control module control operational module are shaken according to default first vibration frequency；
Step 5.2）If the distance between barrier and crutch body are less than the second distance threshold value, control module control
Operational module is shaken according to default second vibration frequency, and second vibration frequency is more than first vibration frequency.
The processor of the control module uses AVR series monolithics, preferentially uses Atmega168PA microcontrollers.
The power module uses lithium ion battery, model ICR18650.
First distance threshold is 2 meters, and the second distance threshold value is 0.5 meter.
Those skilled in the art of the present technique are it is understood that unless otherwise defined, all terms used herein（Including skill
Art term and scientific terminology）With the identical meaning of the general understanding with the those of ordinary skill in fields of the present invention.Also
It should be understood that those terms such as defined in the general dictionary should be understood that with the context of the prior art
The consistent meaning of meaning, and unless defined as here, will not be explained with the implication of idealization or overly formal.
Above-described embodiment, has carried out the purpose of the present invention, technical solution and beneficial effect further
Describe in detail, it should be understood that the foregoing is merely the embodiment of the present invention, be not limited to this hair
Bright, within the spirit and principles of the invention, any modification, equivalent substitution, improvement and etc. done, should be included in the present invention
Protection domain within.
Claims (6)
1. the based reminding method of the blind-guide brick based on ultrasonic measurement, the blind-guide brick based on ultrasonic measurement includes crutch
Body, the first shock module, the second shock module, sound prompting module, the first ultrasonic measurement module, the second ultrasonic measurement
Module, control module, power module and water droplet inductor；
First shock module, the second shock module are separately positioned on the left side and right side of the crutch body hand grip portion；
The first ultrasonic measurement module, the second ultrasonic measurement module level are being arranged on the crutch body top just
Face；
The water droplet inductor is arranged on the bottom of the crutch body；
The sound prompting module is arranged in crutch body, and control module, power module are arranged in crutch body；
The control module respectively with power module, the first shock module, the second shock module, sound prompting module, the first surpass
Acoustic measurement module, the second ultrasonic measurement module, water droplet inductor are electrically connected；
It is characterized in that, the based reminding method comprises the steps of：
Step 1）, the first ultrasonic measurement module, the second ultrasonic measurement module measurement periphery barrier and crutch body
The distance between and orientation, and pass it to the control module；
Step 2）, the water droplet inductor sensing crutch body bottom whether there is water, and pass it to the control module；
Step 3）, the control module is according to the control sound prompting module work of the sensed data of water droplet inductor：If crutch
Body bottom portion has water, and control module control sound prompting module sends the prompting of " there is water in front "；
Step 4）, control module is according to the orientation between barrier and crutch body, setting operational module；
Step 4.1）If the first shock module, the second shock module in the front of crutch body, are set as work by barrier
Make module；
Step 4.2）If the first shock module in the left side of crutch body, is set as operational module by barrier；
Step 4.3）If the second shock module on the right side of crutch body, is set as operational module by barrier；
Step 5）, control module by the distance between barrier and crutch body respectively with default first distance threshold, second
Distance threshold is compared, wherein, first distance threshold is more than second distance threshold value；
Step 5.1）If the distance between barrier and crutch body are less than first distance threshold and more than or equal to described
Second distance threshold value, control module control operational module are shaken according to default first vibration frequency；
Step 5.2）If the distance between barrier and crutch body are less than the second distance threshold value, control module control
Operational module is shaken according to default second vibration frequency, and second vibration frequency is more than first vibration frequency.
2. the based reminding method of the blind-guide brick according to claim 1 based on ultrasonic measurement, it is characterised in that the control
The processor of molding block uses AVR series monolithics.
3. the based reminding method of the blind-guide brick according to claim 2 based on ultrasonic measurement, it is characterised in that the control
The processor of molding block uses Atmega168PA microcontrollers.
4. the based reminding method of the blind-guide brick according to claim 1 based on ultrasonic measurement, it is characterised in that the electricity
Source module uses lithium ion battery.
5. the based reminding method of the blind-guide brick according to claim 4 based on ultrasonic measurement, it is characterised in that the lithium
The model ICR18650 of ion battery.
6. the based reminding method of the blind-guide brick according to claim 1 based on ultrasonic measurement, it is characterised in that described
One distance threshold is 2 meters, and the second distance threshold value is 0.5 meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711233973.XA CN107966703A (en) | 2017-11-30 | 2017-11-30 | The based reminding method of blind-guide brick based on ultrasonic measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711233973.XA CN107966703A (en) | 2017-11-30 | 2017-11-30 | The based reminding method of blind-guide brick based on ultrasonic measurement |
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| CN107966703A true CN107966703A (en) | 2018-04-27 |
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| CN201711233973.XA Pending CN107966703A (en) | 2017-11-30 | 2017-11-30 | The based reminding method of blind-guide brick based on ultrasonic measurement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108992316A (en) * | 2018-08-13 | 2018-12-14 | 京东方科技集团股份有限公司 | Blind-guiding stick and guide implementation method |
| CN110638613A (en) * | 2019-08-15 | 2020-01-03 | 广东工业大学 | An obstacle avoidance system and obstacle avoidance method based on intelligent obstacle avoidance glasses and crutches |
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|---|---|---|---|---|
| CN201104954Y (en) * | 2007-09-20 | 2008-08-27 | 襄樊学院 | Crutches for the Blind with Ultrasonic Control and Voice Prompts |
| CN202740340U (en) * | 2012-07-13 | 2013-02-20 | 浙江理工大学科技与艺术学院 | Ultrasonic wave guiding device for blind person |
| CN203244562U (en) * | 2013-04-27 | 2013-10-23 | 西藏民族学院 | Intelligent blindness guide walking stick based on GPS/GPRS |
| CN203647665U (en) * | 2014-01-07 | 2014-06-18 | 于宇航 | Blind guiding instrument allowing adjustable measurement of heights of obstacles |
| CN104068997A (en) * | 2014-06-30 | 2014-10-01 | 北京信息科技大学 | Multifunctional walking stick for blind |
| CN104323903A (en) * | 2014-11-20 | 2015-02-04 | 上海电机学院 | Multifunctional blind people guiding walking stick and working method thereof |
| CN105030492A (en) * | 2015-07-30 | 2015-11-11 | 苏州玄禾物联网科技有限公司 | Crutch for blind man based on ultrasonic phased array |
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2017
- 2017-11-30 CN CN201711233973.XA patent/CN107966703A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201104954Y (en) * | 2007-09-20 | 2008-08-27 | 襄樊学院 | Crutches for the Blind with Ultrasonic Control and Voice Prompts |
| CN202740340U (en) * | 2012-07-13 | 2013-02-20 | 浙江理工大学科技与艺术学院 | Ultrasonic wave guiding device for blind person |
| CN203244562U (en) * | 2013-04-27 | 2013-10-23 | 西藏民族学院 | Intelligent blindness guide walking stick based on GPS/GPRS |
| CN203647665U (en) * | 2014-01-07 | 2014-06-18 | 于宇航 | Blind guiding instrument allowing adjustable measurement of heights of obstacles |
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| CN104323903A (en) * | 2014-11-20 | 2015-02-04 | 上海电机学院 | Multifunctional blind people guiding walking stick and working method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108992316A (en) * | 2018-08-13 | 2018-12-14 | 京东方科技集团股份有限公司 | Blind-guiding stick and guide implementation method |
| CN110638613A (en) * | 2019-08-15 | 2020-01-03 | 广东工业大学 | An obstacle avoidance system and obstacle avoidance method based on intelligent obstacle avoidance glasses and crutches |
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Application publication date: 20180427 |
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