CN2798911Y - Supersonic collision-proof alarming crutch - Google Patents
Supersonic collision-proof alarming crutch Download PDFInfo
- Publication number
- CN2798911Y CN2798911Y CN 200520015882 CN200520015882U CN2798911Y CN 2798911 Y CN2798911 Y CN 2798911Y CN 200520015882 CN200520015882 CN 200520015882 CN 200520015882 U CN200520015882 U CN 200520015882U CN 2798911 Y CN2798911 Y CN 2798911Y
- Authority
- CN
- China
- Prior art keywords
- crutch
- circuit
- walking stick
- ultrasound wave
- supersonic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The utility model discloses a walking stick for helping blind people, particularly a supersonic collision-proof alarm walking stick which combines electronic technology, automatic control technology and supersonic technology. The utility model has the technical scheme that the utility model comprises a rod-shaped walking stick, and the upper part of the walking stick is provided with a supersonic detecting alarm device which comprises a power supply, a single chip computer connected with the power supply, a supersonic transmitting probe, a receiving probe and an intermediate handling circuit which are all connected with the single chip computer and are installed on the front end of the upper part of the walking stick, a frequency selection circuit, an amplifying circuit and a comparator circuit which are all connected with the supersonic receiving probe, and an alarm device connected with the single chip computer. The utility model adopts supersonic distance measuring alarm technology to the walking stick for blind people, enlarges the function of the traditional walking stick, and increases the distance measurement in the horizontal direction so that users can obtain a piece of three-dimensional planar information through rotating the walking stick in situ and feel whether obstacles exist or not within a certain distance in every direction. Therefore, the utility model has the advantage of convenient use.
Description
Technical field
This utility model relates to a kind of blind crutch that helps, particularly a kind of ultrasound wave collision-proof alarm crutch that combines electronic technology, automatic control technology and ultrasonic technology.
Background technology
Along with making rapid progress of science and technology, intelligence machine has a wide range of applications in daily life.Yet, existingly help blind crutch great majority also in a state of nature, i.e. simple stock, crutch with warning function seldom, the disclosed relevant patent of China State Intellectual Property Office has 8, and wherein majority is the class of saving oneself, with more approaching one of this utility model be that application number is 02230572.6 Chinese patent application, being described below of it: " this utility model belongs to old man, the blind person apparatus of walking, and relates to a kind of crutch.Its principal character is that flashlight lighting portion is located at cane in the front end cylinder hollow, cane masthead end is fixed on cane the bottom surface, stage casing, the cane bar is for being the thick hollow cylindrical of two ends detail section, and it is thick cylindricly to be provided with loudspeaker, power-supply battery, alarm integrated package and two series diodes in hollow.The utlity model has the old man particularly vision weak person when walking starlit night, both can be used as pocket lamp usefulness, also can work as crutch and use, report to the police during road surface that the blind person runs into mud road surface, hydrops, the blind person just haves a sense of security.Though " walking at starlit night that is old man, vision weak person of this crutch and blind person on the mud road surface, the walking on hydrops road surface brought certain convenience;; uses as crutch; still there is the shortcoming of ordinary canes in it; promptly have only when crutch is run into barrier, the water surface and just can report to the police, for this reason, uses the people of crutch to get ceaselessly exploration; very arduous, very passive.
Summary of the invention
The purpose of this utility model is that a kind of ultrasound wave collision-proof alarm crutch will be provided, and it has easy to use, safety, and comfortable characteristics have and help blind effect preferably.
Comprise shaft-like crutch in order to reach the technical scheme that the purpose of this utility model takes, it is characterized in that, the ultrasonic listening alarm device has been installed on the top of this crutch.
In the above-mentioned ultrasound wave collision-proof alarm crutch, the ultrasonic listening alarm device comprises: power supply, the single-chip microcomputer that is connected with this power supply, be connected with this single-chip microcomputer and be installed in ultrasonic emitting probe, receiving transducer and the intermediate treatment circuit of crutch top front end, with frequency selection circuit, amplifying circuit and the comparison circuit that this ultrasound wave receiving transducer is connected, the alarm that is connected with single-chip microcomputer.
In the above-mentioned ultrasound wave collision-proof alarm crutch, frequency selection circuit is formed in parallel by an electric capacity and an inductance, and frequency selection circuit is connected between ultrasound wave receiving transducer and the amplifying circuit, makes that only transmit could be by system identification.
In the above-mentioned ultrasound wave collision-proof alarm crutch, amplifying circuit is by a negative feedback amplifier circuit that amplifier is formed in 2 resistance and the double operational chip.
In the above-mentioned ultrasound wave collision-proof alarm crutch, comparison circuit is connected between amplifying circuit and the single-chip microcomputer, and it is by being connected on the simple comparator that potentiometer between power supply and ground and another amplifier in the double operational chip are formed.
In the above-mentioned ultrasound wave collision-proof alarm crutch, power supply is provided by the aneroid battery that is connected with stabilivolt, and 7660 chips are negative supply.
In the above-mentioned ultrasound wave collision-proof alarm crutch, alarm is the dedicated voice chip (can be customized by relevant producer) of low-power consumption (operating current is less than 20 milliamperes).
This utility model has been used for blind person's crutch with the ultrasonic ranging alarm technique, has expanded the function of traditional crutch, has changed the limitation that traditional crutch can only be surveyed one-dimension information.Owing to increased the range finding of horizontal direction, make that user can be by obtaining the information of a three-dimensional planar to the original place rotation of this crutch, whether all directions certain distance in have barrier, so very easy to use if can perceive.
In addition, alarm device volume of the present utility model only is that palm is big, can power with general dry battery, is easy to carry and changes battery; Only tens milliamperes of operating currents, the ultrasonic listening distance has only several meters, so environment is not had harmful effect substantially.This crutch music alarm is served more humane.
Description of drawings
Fig. 1 is the structural representation of this ultrasound wave collision-proof alarm crutch;
Fig. 2 is the detection alarm block diagram of this ultrasound wave collision-proof alarm crutch;
Fig. 3 is the radiating circuit schematic diagram of this ultrasound wave collision-proof alarm crutch.
Embodiment
Below in conjunction with drawings and Examples this utility model is further described.
As shown in Figure 1,1 is shaft-like crutch, and 2 are the ultrasonic listening alarm device, and 2 are installed in the top front end of crutch 1, near the tap.Two ultrasound probes of ultrasonic listening alarm device 2 are towards the place ahead.
Shown in Fig. 3 lower left corner, power supply VCC: the aneroid battery that surpasses 3V with number joint total voltage provides, and aneroid battery is with after switch and power supply indicator are connected, and in parallel with the 3V stabilivolt, making output voltage is the 3V normal voltage, powers to entire circuit.
Shown in Fig. 3 lower right corner, negative supply VDD: the power pin of negative supply chip (this sentences 7660 chips is example) meets VCC, forward connects an electrochemical capacitor between CAP+ pin and the CAP-pin, GND pin earth lead, and forward connects an electrochemical capacitor between output pin and ground wire.Then the voltage exported of output pin is-the 3V normal voltage, for entire circuit provides negative supply.
Shown in Fig. 3 top, single-chip microcomputer: have the various single-chip microcomputers of 4 above I/O pins to adopt.Present embodiment adopts the AT89C2051 single-chip microcomputer.With minimum system pattern connection, there are 3 I/O mouths to be connected with radiating circuit, comparison circuit and speech chip respectively.
Shown in the left side, Fig. 3 middle part, ultrasonic transmit circuit: an I/O mouth of single-chip microcomputer links to each other with a potentiometer, potentiometer connects the base stage of NPN transistor, transistorized grounded emitter, transistorized colelctor electrode connects the negative input end of pulse transformer, the positive input terminal of pulse transformer links to each other with power supply by resistance, connects the ultrasonic emitting probe between the positive-negative output end of pulse transformer.
Shown in the right, Fig. 3 middle part, ultrasound wave receiving circuit: ultrasound wave receiving transducer, a termination frequency selection circuit, an end ground connection.
Shown in the right, Fig. 3 middle part, frequency selection circuit: be connected between ultrasound wave receiving circuit and the amplifying circuit, be formed in parallel by an electric capacity and an inductance.
Shown in the right, Fig. 3 middle part, amplifying circuit: be connected between frequency selection circuit and the comparison circuit, by the resistance of 2 suitable resistances and a negative feedback amplifier circuit that amplifier is formed in the double operational chip.Wherein, a resistance is connected between the reverse input end and ground of amplifier, and another resistance is connected between the reverse input end and outfan of amplifier, the selecting of the input in the same way frequency circuit of amplifier.In addition, the VCC+ pin of amplifier connects power supply, and the VCC-pin connects negative supply.
Shown in Fig. 3 middle part the right, comparison circuit: be connected between the I/O mouth of amplifying circuit and single-chip microcomputer, it is by being connected on the simple comparator that potentiometer between power supply and ground and another amplifier in the double operational chip are formed.Wherein, the outfan of this amplifier connects an I/O mouth of single-chip microcomputer, imports the outfan of the last amplifier of termination in the same way, and reverse input end is connected on the middle part of potentiometer; The two ends of this potentiometer connect power supply and ground connection respectively.
This product belongs to electronic technology, automatic control technology and ultrasonic technology and is helping the application in blind field, by ordinary canes the ultrasound wave proximity-warning device being installed near tap forms, by launching ultrasound wave and accepting its inverse signal, through the calculating of single chip machine controlling circuit, analyze the dangerous and warning in time of potential collision.
Then reporting to the police less than 3 meters with the factory settings obstacle distance is example, and job step of the present utility model is as follows:
1, user is opened switch, and circuit is started working.
2, single-chip microcomputer sends square-wave signal, through pulse transformer, by the ultrasonic emitting head signal of telecommunication is converted into ultrasonic signal and launches.Simultaneously, the single-chip microcomputer 18ms (ultrasound wave is a needed back and forth time in 3 meters) that picks up counting.
3, ultrasonic signal returns after running into barrier, is received by the ultrasound wave receiving transducer, is converted into the signal of telecommunication.
4, the signal of telecommunication only transmits and could pass through through frequency-selective network.
5, very big decay is arranged when propagating in air owing to ultrasound wave, need amplify several times with signal this moment with amplifying circuit.
6, the signal through after amplifying compares at voltage comparator and datum.If signal amplitude is greater than datum, then system thinks truly have barrier in several meter, and high level of voltage comparator output is given single-chip microcomputer.
7, if single-chip microcomputer in periodic 18ms, receives the high level from voltage comparator, then think in 3 meters on the barrier.So single-chip microcomputer sends enabling signal to speech chip, speech chip sends the music of warning, 2 seconds of time remaining.Got back to for the 2nd step then
8, if single-chip microcomputer in periodic 18ms, does not receive the high level from voltage comparator, then system enters resting state, and all circuit quits work.After 18ms, got back to for the 2nd step.
It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although this utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (6)
1, a kind of ultrasound wave collision-proof alarm crutch comprises shaft-like crutch, it is characterized in that, on the top of this crutch the ultrasonic listening alarm device has been installed.
2, ultrasound wave collision-proof alarm crutch according to claim 1, it is characterized in that, described ultrasonic listening alarm device comprises: power supply, the single-chip microcomputer that is connected with this power supply, be connected with this single-chip microcomputer and be installed in ultrasonic emitting probe, receiving transducer and the intermediate treatment circuit of crutch top front end, with frequency selection circuit, amplifying circuit and the comparison circuit that this ultrasound wave receiving transducer is connected, the alarm that is connected with single-chip microcomputer.
3, ultrasound wave collision-proof alarm crutch according to claim 2, it is characterized in that, frequency selection circuit is formed in parallel by an electric capacity and an inductance, and frequency selection circuit is connected between ultrasound wave receiving transducer and the amplifying circuit, makes that only transmit could be by system identification.
4, ultrasound wave collision-proof alarm crutch according to claim 2 is characterized in that, amplifying circuit is by a negative feedback amplifier circuit that amplifier is formed in 2 resistance and the double operational chip.
5, ultrasound wave collision-proof alarm crutch according to claim 2 is characterized in that, comparison circuit is connected between amplifying circuit and the single-chip microcomputer, and it is by being connected on the simple comparator that potentiometer between power supply and ground and another amplifier in the double operational chip are formed.
6, ultrasound wave collision-proof alarm crutch according to claim 2 is characterized in that power supply is provided by the aneroid battery that is connected with stabilivolt, and 7660 chips are negative supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520015882 CN2798911Y (en) | 2005-04-29 | 2005-04-29 | Supersonic collision-proof alarming crutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520015882 CN2798911Y (en) | 2005-04-29 | 2005-04-29 | Supersonic collision-proof alarming crutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2798911Y true CN2798911Y (en) | 2006-07-26 |
Family
ID=36841410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520015882 Expired - Fee Related CN2798911Y (en) | 2005-04-29 | 2005-04-29 | Supersonic collision-proof alarming crutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2798911Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101642405B (en) * | 2009-06-19 | 2011-05-18 | 中国科学院声学研究所 | Ultrasonic blind guide method and portable ultrasonic blind guide device thereof |
| CN102068369A (en) * | 2010-12-30 | 2011-05-25 | 北京理工大学珠海学院 | Navigation system for the blind under environment of the internet of things |
| CN102805449A (en) * | 2011-06-03 | 2012-12-05 | 江苏新天工广告有限公司 | Shoes with voice prompting device for the blind |
| CN103932875A (en) * | 2013-01-21 | 2014-07-23 | 吴欣怡 | Seeing-eye walking stick based on ultrasonic ranging |
-
2005
- 2005-04-29 CN CN 200520015882 patent/CN2798911Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101642405B (en) * | 2009-06-19 | 2011-05-18 | 中国科学院声学研究所 | Ultrasonic blind guide method and portable ultrasonic blind guide device thereof |
| CN102068369A (en) * | 2010-12-30 | 2011-05-25 | 北京理工大学珠海学院 | Navigation system for the blind under environment of the internet of things |
| CN102805449A (en) * | 2011-06-03 | 2012-12-05 | 江苏新天工广告有限公司 | Shoes with voice prompting device for the blind |
| CN103932875A (en) * | 2013-01-21 | 2014-07-23 | 吴欣怡 | Seeing-eye walking stick based on ultrasonic ranging |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2798911Y (en) | Supersonic collision-proof alarming crutch | |
| Murali et al. | Smart walking cane for the visually challenged | |
| CN102005103B (en) | Anti-drowning warning equipment and warning method thereof | |
| CN102069686A (en) | Automobile tire monitoring device based on organic piezoelectric material | |
| CN108245387A (en) | A kind of intelligent blind guiding system based on wearable device | |
| CN1748662A (en) | Intelligent blind person walking guide instrument and its walking guide method | |
| CN104586614A (en) | Cavity/barrier detection walking stick for blind people | |
| CN106710150A (en) | Debris flow impact force monitoring system and alarm method | |
| CN105616042A (en) | Intelligent artificial hand control system | |
| CN103324127B (en) | Electric multiple unit flashover prevention device | |
| JP3210281U (en) | Earthquake rescue support device | |
| CN205849674U (en) | Wheelchair sitting posture sensing device based on pressure transducer | |
| Basheshankar et al. | Assistive Cane for Visually Impaired People | |
| CN105150919B (en) | A kind of anti-car rear-end system and method | |
| CN204274945U (en) | A kind of new type ultrasonic blind guide | |
| CN206892239U (en) | A kind of low-tension distribution box outer casing electrification detects warning device | |
| CN206146900U (en) | Gas leakage monitors audible -visual annunciator | |
| CN2879190Y (en) | Multi-sensor gas protrudent forecast instrument | |
| CN2780175Y (en) | Infrared electronic blind stick | |
| CN207007779U (en) | A kind of ultrasonic wave early warning defectoscope with positioning function | |
| CN208785219U (en) | Intelligent blind-guiding walking stick | |
| CN104574870B (en) | wearable vision monitoring system based on ZigBee and Bluetooth | |
| CN106530560A (en) | Burglar alarm based on human body infrared induction module | |
| CN2803345Y (en) | Smart guide stick for blind person | |
| CN213190991U (en) | Multifunctional walking stick for blind person and communication positioning system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060726 |