CN2843397Y - Electronic device for helping blind walking and discriminating obstacle - Google Patents
Electronic device for helping blind walking and discriminating obstacle Download PDFInfo
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- CN2843397Y CN2843397Y CN 200520109184 CN200520109184U CN2843397Y CN 2843397 Y CN2843397 Y CN 2843397Y CN 200520109184 CN200520109184 CN 200520109184 CN 200520109184 U CN200520109184 U CN 200520109184U CN 2843397 Y CN2843397 Y CN 2843397Y
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Abstract
The utility model relates to an electronic device for helping blind walking and discriminating obstacles, which is worn on a head of a user. The utility model comprises an ultrasonic emission sensor, two ultrasonic receiving sensors, a control circuit which can generate ultrasonic signals, receive ultrasonic echoes and converts ultrasonic into acoustic waves and a pair of earphones, wherein the control circuit, the ultrasonic emission sensor and the ultrasonic receiving sensors are integrated to form a whole to be connected with the earphones; the control circuit comprises two amplifiers, two modulators and two low-pass amplifiers; the ultrasonic receiving sensors receive the ultrasonic signals; the ultrasonic signals are amplified through the amplifiers, enter the modulators to be synchronously modulated, then enter the low-pass amplifiers for gating amplification and finally enter the earphones to be converted into acoustic signals. By recovering reflected signals, the utility model can modulate the acoustic waves which can be discriminated by adults; by the listening of double ears, images are formed in a brain, and the utility model realizes that auditory sensation can replace part of the function of visual sensation; after the utility model is skillfully used, the discriminating ability of users can be improved.
Description
Technical field
This utility model relates to and a kind ofly is used to help that the blind person walks, the electronic installation of cognitive disorders thing, this device outwards sends ultrasound wave, by reclaiming the sound wave that its reflected signal and demodulation adult can differentiate, listen to and the brain imaging again, realize partly replacing the function of vision with audition by ears.
Background technology
Stereo (stereo) is that sound passes through people's ears are produced acoustic image at brain, to determine the sounding position of certain sound source, because people's left and right sides ear has at interval, and directivity is arranged, same sound to two ears produce different acoustic pressures can allow the people feel sound source more close which side; Again because sound spread speed in the air of room temperature is certain value (about 330 meter per seconds), propagate the time length meeting difference that different distance needs, like this, left and right sides ear just there is the multiple action of priority, intensity and time difference, thereby under the coordination of brain, produces acoustic image.When our performance in a large-scale band of appreciation, closing eyes exactly and listening to, also can determine the azimuth-range of certain musical instrument sounding, even the people of general audition can accomplish easily.
Human use's wave reflection is determined the orientation, the technology and the product of existing comparative maturity:
1. radar, it be by calculate frequency electromagnetic waves from be issued to the time that is reflected and determine and target between distance;
2. sonar is generally used for undersea detection, also is by hyperacoustic turnaround time computed range;
3. radar for backing car reflects distance between car and the barrier by the length that detects hyperacoustic receive-after-transmit time delay.
Their common ground all is to use the ripple that is higher than audio frequency, is unlikely to like this environment is brought tangible influence; And, represent through figure or concrete numerical value usually that promptly its result realizes or simple the warning with visual manner to resulting recovery Signal Processing; Obviously these modes of judging object distance do not have any Practical significance for the blind person.
Up to the present, the existing in the world similar device that assist location is provided for the visually impaired people with ultrasound wave echo principle.
Chinese invention patent 85100707 has disclosed a kind of " accurately measuring the ultrasonic blind guide glasses of nearest distance of obstacle ", as a kind of ultrasonic blind guide glasses, adopt the pulse sonar principle and the repetition rate of band time gate and filled the monitor method of the two-parameter frequency conversion that frequency changes with obstacle distance, because only monitor nearest barrier echo in the effective range, the information that it provided is more single.
Chinese utility model patent 92215536.4 had disclosed a kind of " integrated circuit ultrasonic blind guide glasses " in 1993, and the integrated circuit of a slice special use is made in above-mentioned invention, and its ultimate principle is identical with it, also still is to listen to an ear.
Also have with the device of ordinary language as information.For example, a kind of electronics crutch of finding range with ultrasound wave echo principle is arranged, the blind person hand-held it point to certain direction and just can directly hear its voice suggestion, remind at certain apart from obstacle is arranged.
These modes are more succinct, but there is significant limitation, by these devices the abundant environment of reality is simplified to a monophone or voice, the sound that they provided is limited, certainly they can also be limited to people's information, sound equally and a word can only be expressed a clear and definite meaning, not because also can whether skillfully any variation not take place based on using.
Calendar year 2001 China utility model patent 01255716.1 " blind person with ultrasound wave echo omniselector " has disclosed a kind of device that utilizes ultrasound wave echo realization blind man navigation, principle utilizes ultrasound wave to be converted into binaural audio exactly, its structure is to have fixed ultrasonic emitting and receiving sensor on a secondary Glasses for blind person, and signal processing is to receive the capsule of a special use via line, ultrasonic emitting pulsewidth and repetition period can be adjusted respectively, to adapt to different distances.This patent has been introduced by the notion of audition in the brain imaging, has also formed the technology blank, and volume is big, power consumption is high, pick off is difficult for the difficult limitation of promoting practicality such as fixing, that the pitch volume is non-adjustable but exist.
Summary of the invention
In view of this, this utility model further improves practicality, convenience, and has realized integrated and low-power consumption on the basis of utility model patent 01255716.1 " blind person with ultrasound wave echo omniselector ", further perfect project organization.The difference that this utility model had is: whole circuit and pick off are designed to integrated, are convenient to be attached on the common mirror holder or the brim of a hat; Pitch and volume are adjustable respectively, to be fit to different batteries and to listen to custom.Can produce ultrasonic signal, receive ultrasound wave echo and ultrasound wave is converted into circuit and a ultrasonic emitting probe, two ultrasound wave receiving transducers and a pair of earphone of sound wave by this cover, can finish that road conditions and obstacle information are changed into double-tone function frequently.Because this device has showed the full detail of the whole ultrasonic ripple area of coverage by left and right sides two-way audio, therefore along with use proficiency level's raising, will have more details can be distinguished by user.
For achieving the above object, this utility model provides a kind of and is used to help the blind person to walk, the electronic installation of cognitive disorders thing, this device is worn on the user head, comprise: a ultrasonic emitting pick off and two ultrasound wave receiving sensors, can produce ultrasonic signal, receive ultrasound wave echo and ultrasound wave is converted into the control circuit and a pair of earphone of sound wave, wherein said control circuit and described ultrasonic emitting pick off and described two ultrasound wave receiving sensors integrate, and be connected with described a pair of earphone, comprise two amplifiers that are connected with described two ultrasound wave receiving sensors respectively in the described control circuit, two manipulators that are connected with described two amplifiers respectively, and two low-pass amplifiers that are connected with described two manipulators respectively; Described ultrasound wave receiving sensor receives the ultrasonic signal that is sent by described ultrasonic emitting pick off, amplify by described two amplifiers respectively, enter described two manipulators more respectively and carry out synchronous modulation by modulation signal, enter described two low-pass amplifiers then respectively and carry out the gating amplification, enter described a pair of earphone at last respectively and be converted into acoustical signal.
Help according to above-mentioned being used to that the blind person walks, the electronic installation of cognitive disorders thing, wherein, also comprise the volume adjuster that is used to select the pitch adjustor of suitable difference frequency and is used to adjust sound intensity, described pitch adjustor is connected described ultrasonic emitting pick off and described manipulator receives between the port of described modulation signal, and described volume adjuster is connected between described two low-pass amplifiers.
Help according to above-mentioned being used to that the blind person walks, the electronic installation of cognitive disorders thing, wherein, described ultrasonic emitting pick off is positioned at the central authorities of described electronic installation.
Help according to above-mentioned being used to that the blind person walks, the electronic installation of cognitive disorders thing, wherein, described two ultrasound wave receiving sensor left-right symmetric distribute, and open apart from the ears distance of user quite.
Device of the present utility model can provide a ultrasound beamformer, it can follow the head of user to move, and the length of wave beam can be stretched automatically, and can administer the zone of certain taper, any object that appears at this conical region all will be detected, and tell us by sound.Because the circuit of this device and device all are integrated and are installed on the same circuit board, and the relative position of ultrasonic emitting pick off and ultrasound wave receiving sensor is fixed, thereby the Unit Installation debugging will be easier with wearing use; The pitch adjustor that is provided with in the integrated circuit plate allows user can select oneself to think the audio frequency that adapts to most voluntarily; Wherein the volume adjuster of She Zhiing makes things convenient for user to select suitable volume in quiet or noisy environment.Therefore, device of the present utility model can reach the effect of following several respects:
1, differentiates different object in the sphere of action;
2, can not bring additional noise to periphery;
3, sphere of action can artificially be selected;
4, user can not felt very tried;
5, finally provide audio signal, only need listen to ears;
6, by using, improve resolution capability gradually.
Principle of the present utility model is similar to the echolocation principle of Vespertilio, therefore of the present utility modelly is used to help that the blind person walks, the electronic installation of cognitive disorders thing is also referred to as " practical bat ear ".
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a schematic diagram of the present utility model.
The specific embodiment
As shown in Figure 1 and Figure 2, be a kind of " bat ear glasses " of being convenient to wear, promptly of the present utility modelly be used to help that the blind person walks, the electronic installation of cognitive disorders thing.Fig. 1 shows structural representation of the present utility model, and Fig. 2 shows schematic diagram of the present utility model.This device is worn on the user head, comprise: ultrasonic emitting pick off 1 and two ultrasound wave receiving sensors 2 and 3, can produce ultrasonic signal, receive ultrasound wave echo and ultrasound wave is converted into control circuit 4 and a pair of earphone 5 and 6 of sound wave, wherein control circuit 4 integrates with ultrasonic emitting pick off 1 and two ultrasound wave receiving sensors 2 and 3.The intermediary nose holder of mirror holder top is a ultrasonic pulse emission sensor 1; The front of mirror holder both sides be about two ultrasound wave receiving sensors 2 and 3; What be fixed on mirror holder the place ahead or both sides is control circuit 4; Two earphones 5,6 lay respectively at the left and right sides.Ultrasonic emitting pick off 1 is in the central authorities of user head in use.Two ultrasound wave receiving sensors 2 and 3 are symmetrically distributed, and open apart from the ears distance of user quite.
Comprise in the control circuit 4: two amplifier A and B, two manipulator C and D, and two low-pass amplifier E and F.Amplify by two amplifier A and B respectively by ultrasound wave receiving sensor 2 and 3 ultrasonic signals that receive, enter two manipulator C and D more respectively, by the modulation signal synchronous modulation, enter two low-pass amplifier E and F then respectively, enter a pair of earphone 5 and 6 at last respectively and be converted into acoustical signal.
In addition, this device also comprises the volume adjuster 8 that is used to select the pitch adjustor 7 of suitable difference frequency and is used to adjust sound intensity, pitch adjustor 7 is connected ultrasonic emitting pick off 1 and manipulator C and D and receives between the port of described modulation signal, and volume adjuster 8 is connected between two low-pass amplifier E and the F.
The purpose of this utility model is achieved in that
The ultrasonic pulse emission sensor 1 of an Automatic Cycle runs into obstacle and reflex time at the ultrasound wave that sends, and is directly proportional from the emission beginning to the time difference of receiving reflected signal with distance.This time difference is converted to the audio signal of corresponding frequencies, and promptly in setting effective scope, each distance all has corresponding with it frequency.About two receiving sensors 2 and 3, with the 1 synchronous coordination work of ultrasonic pulse emission sensor, pairing left and right sides two-way sound signal helps to determine the position, the left and right sides of barrier.Amplitude, time difference conversion that the ultrasonic reflections signal that is received is comprised are the easy volume of differentiating of people's ear and the continuous analog amount of frequency, reach brain by auditory nerve, form the audition video by brain by analyzing.Test shows, common people have this potential, and by continuous study, this ability also can improve gradually.
Device of the present utility model can provide a ultrasound beamformer, it can follow the head of user to move, and the length of wave beam can be stretched automatically, and can administer the zone of certain taper, any object that appears at this conical region all will be detected, and tell us by sound.The circuit of this device and device all are integrated and are installed on the same circuit board, and the relative position of ultrasonic emitting pick off and ultrasound wave receiving sensor is fixed, thereby user can more easily carry out Installation and Debugging and wear use this device; Pitch adjustor in the integrated circuit plate allows user can select oneself to think the audio frequency that adapts to most voluntarily; Volume adjuster in the integrated circuit plate makes things convenient for user to select suitable volume in quiet or noisy environment.Therefore, by above device of the present utility model, reached following effect: differentiate different object in the sphere of action; Can not bring additional noise to periphery; Sphere of action can artificially be selected; User can not felt very tried; Finally provide audio signal, only need listen to ears; By using, improve resolution capability gradually.
The above only is a kind of preferable enforcement of the present utility model, however feature of the present utility model be not limited thereto, scope of the present utility model should be as the criterion with the claim scope of enclosing.The all spirit of this utility model claim scope and embodiment of similar variation thereof of meeting; all should be included in the category of the present utility model; those of ordinary skills are carried out in field of the present utility model can think easily and variation or modification, also all should be encompassed in the scope of patent protection of the present utility model.
Claims (4)
1, a kind ofly be used to help the blind person to walk, the electronic installation of cognitive disorders thing, this device is worn on the user head, comprise: a ultrasonic emitting pick off (1) and two ultrasound wave receiving sensors (2) and (3), can produce ultrasonic signal, receive ultrasound wave echo and ultrasound wave is converted into control circuit (4) and a pair of earphone (5) and (6) of sound wave, it is characterized in that, described control circuit (4) and described ultrasonic emitting pick off (1) and described two ultrasound wave receiving sensors (2) and (3) integrate, and be connected with (6) with described a pair of earphone (5), comprise respectively two amplifiers (A) of being connected with (3) with described two ultrasound wave receiving sensors (2) and (B) in the described control circuit (4), two manipulators (C) that are connected with (B) with described two amplifiers (A) and (D) respectively, and two low-pass amplifiers (E) that are connected with (D) with described two manipulators (C) respectively and (F);
Described ultrasound wave receiving sensor (2) and (3) receive the ultrasonic signal that is sent by described ultrasonic emitting pick off (1), amplify by described two amplifiers (A) with (B) respectively, enter described two manipulators (C) more respectively and (D) carry out synchronous modulation by modulation signal, enter described two low-pass amplifiers (E) then respectively and (F) carry out gating and amplify, enter described a pair of earphone (5) and (6) at last respectively and be converted into acoustical signal.
2, as claimed in claim 1ly be used to help that the blind person walks, the electronic installation of cognitive disorders thing, it is characterized in that, also comprise the volume adjuster (8) that is used to select the pitch adjustor (7) of suitable difference frequency and is used to adjust sound intensity, described pitch adjustor (7) is connected described ultrasonic emitting pick off (1) and described manipulator (C) and (D) receives between the port of described modulation signal, described volume adjuster (8) be connected described two low-pass amplifiers (E) and (F) between.
3, as claimed in claim 1ly be used to help that the blind person walks, the electronic installation of cognitive disorders thing, it is characterized in that described ultrasonic emitting pick off (1) is positioned at the central authorities of described electronic installation.
4, as claimed in claim 1ly be used to help that the blind person walks, the electronic installation of cognitive disorders thing, it is characterized in that described two ultrasound wave receiving sensors (2) and (3) left-right symmetric distribute, and open apart from the ears distance of user quite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520109184 CN2843397Y (en) | 2005-07-01 | 2005-07-01 | Electronic device for helping blind walking and discriminating obstacle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520109184 CN2843397Y (en) | 2005-07-01 | 2005-07-01 | Electronic device for helping blind walking and discriminating obstacle |
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| CN2843397Y true CN2843397Y (en) | 2006-12-06 |
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| CN 200520109184 Expired - Fee Related CN2843397Y (en) | 2005-07-01 | 2005-07-01 | Electronic device for helping blind walking and discriminating obstacle |
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Cited By (11)
| 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 |
| CN103120614A (en) * | 2013-02-04 | 2013-05-29 | 长兴技师学院 | Walking stick for the blind |
| CN104316919A (en) * | 2014-10-20 | 2015-01-28 | 贝壳网际（北京）安全技术有限公司 | System and method for warning road condition, mobile terminal and radar detection apparatus |
| CN105245996A (en) * | 2014-04-30 | 2016-01-13 | 奥迪康有限公司 | Instrument with remote object detection unit |
| CN105997448A (en) * | 2016-04-30 | 2016-10-12 | 中国海洋大学 | Ultrasonic echo positioning blindness-guiding instrument of frequency-domain projection type |
| CN107260502A (en) * | 2017-06-21 | 2017-10-20 | 关炳亮 | A kind of osteoacusis ultrasonic vision system |
| CN109363899A (en) * | 2018-11-16 | 2019-02-22 | 吉国栋 | A kind of naked ear blind-guide device of blind person based on Modulated Ultrasonic wave |
| CN110840718A (en) * | 2019-11-29 | 2020-02-28 | 河南中医药大学 | Ultrasonic blind guiding method, system and device based on audible audio characteristics |
| CN112429003A (en) * | 2020-11-23 | 2021-03-02 | 北京深睿博联科技有限责任公司 | Blind person driving method and device based on blind person guiding glasses |
| CN113766402A (en) * | 2021-09-11 | 2021-12-07 | 武汉左点科技有限公司 | Hearing aid method and device for improving environmental adaptability |
| CN113766402B (en) * | 2021-09-11 | 2024-04-26 | 武汉左点科技有限公司 | Hearing aid method and device for improving environmental adaptability |
-
2005
- 2005-07-01 CN CN 200520109184 patent/CN2843397Y/en not_active Expired - Fee Related
Cited By (13)
| 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 |
| CN103120614A (en) * | 2013-02-04 | 2013-05-29 | 长兴技师学院 | Walking stick for the blind |
| CN105245996A (en) * | 2014-04-30 | 2016-01-13 | 奥迪康有限公司 | Instrument with remote object detection unit |
| CN104316919B (en) * | 2014-10-20 | 2017-12-29 | 贝壳网际（北京）安全技术有限公司 | Road conditions system for prompting, method, mobile terminal and radar detection apparatus |
| CN104316919A (en) * | 2014-10-20 | 2015-01-28 | 贝壳网际（北京）安全技术有限公司 | System and method for warning road condition, mobile terminal and radar detection apparatus |
| CN105997448A (en) * | 2016-04-30 | 2016-10-12 | 中国海洋大学 | Ultrasonic echo positioning blindness-guiding instrument of frequency-domain projection type |
| CN107260502A (en) * | 2017-06-21 | 2017-10-20 | 关炳亮 | A kind of osteoacusis ultrasonic vision system |
| CN109363899A (en) * | 2018-11-16 | 2019-02-22 | 吉国栋 | A kind of naked ear blind-guide device of blind person based on Modulated Ultrasonic wave |
| CN109363899B (en) * | 2018-11-16 | 2023-12-26 | 吉国栋 | Blind device is led to blind person's naked ear based on modulation ultrasonic wave |
| CN110840718A (en) * | 2019-11-29 | 2020-02-28 | 河南中医药大学 | Ultrasonic blind guiding method, system and device based on audible audio characteristics |
| CN112429003A (en) * | 2020-11-23 | 2021-03-02 | 北京深睿博联科技有限责任公司 | Blind person driving method and device based on blind person guiding glasses |
| CN113766402A (en) * | 2021-09-11 | 2021-12-07 | 武汉左点科技有限公司 | Hearing aid method and device for improving environmental adaptability |
| CN113766402B (en) * | 2021-09-11 | 2024-04-26 | 武汉左点科技有限公司 | Hearing aid method and device for improving environmental adaptability |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061206 Termination date: 20140701 |
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| EXPY | Termination of patent right or utility model |