CN204684109U - A kind of intelligent shoe being applicable to blind person - Google Patents
A kind of intelligent shoe being applicable to blind person Download PDFInfo
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- CN204684109U CN204684109U CN201520386423.1U CN201520386423U CN204684109U CN 204684109 U CN204684109 U CN 204684109U CN 201520386423 U CN201520386423 U CN 201520386423U CN 204684109 U CN204684109 U CN 204684109U
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- sidewalk
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Abstract
This utility model provides a kind of intelligent shoe being applicable to blind person, comprise sole and be arranged at the footwear body on sole, wherein sole be provided with multiple pressure transducer at least partially, produce pressure sensitive signal for being squeezed when described sole and protruding earth surface; And described intelligent shoe also comprises: storage chip, to be squeezed the signal characteristic of produced pressure sensitive signal for prestoring described pressure transducer when sole steps down on sidewalk for visually impaired people; The data processing chip be electrically connected with described pressure transducer and described storage chip respectively, for the signal characteristic of the described pressure sensitive signal received from described pressure transducer and the described signal characteristic prestored are compared, when judge not to correspondence time determine that sole is for departing from sidewalk for visually impaired people, and send cue.This utility model arranges multiple pressure transducer by sole, and prestores sole by storage chip and step down in signal characteristic on sidewalk for visually impaired people, whether can identify sole accurately for being in sidewalk for visually impaired people.
Description
Technical field
This utility model relates to health care technology field, refers in particular to a kind of intelligent shoe being applicable to blind person.
Background technology
Along with the development of electronic science and technology, intelligent health field receives the concern of people day by day, and the equipment that wherein blind person can be helped to walk becomes the object that numerous manufacturer pays close attention to.
Device in the market for blind man navigation mainly utilizes global positioning system (GPS) and general packet radio service technology (General Packet Radio Service; GPRS) network signal carrys out auxiliary positioning; in addition voice message helps blind person to guide road; but adopt the product structure made by this technology complicated; expensive; and often can be subject to the impact of weather signal and building, therefore make promoting the use of of product be very limited.
Utility model content
The object of technical solutions of the utility model is to provide a kind of intelligent shoe being applicable to blind person, whether can be in correct travel route by the contact reminding blind on sole and ground.
This utility model provides a kind of intelligent shoe being applicable to blind person, comprise sole and be arranged at the footwear body on sole, it is characterized in that, described sole be provided with multiple pressure transducer at least partially, produce pressure sensitive signal for being squeezed when described sole and protruding earth surface;
And described intelligent shoe also comprises:
To be squeezed the storage chip of signal characteristic of produced pressure sensitive signal for prestoring described pressure transducer when sole steps down on sidewalk for visually impaired people;
For the signal characteristic of the described pressure sensitive signal received from described pressure transducer and the described signal characteristic prestored are compared, when judge not to correspondence time determine that sole is for departing from sidewalk for visually impaired people, and sending the data processing chip of cue, described data processing chip is electrically connected with described pressure transducer and described storage chip respectively.
Preferably, intelligent shoe described above, wherein, described data processing chip also comprises for after enabling when described intelligent shoe, also determine when not receiving described pressure sensitive signal in the scheduled time that sole is for departing from sidewalk for visually impaired people, and send the first prompting minor structure of cue.
Preferably, intelligent shoe described above, wherein, described storage chip comprises:
For storing fisrt feature first stores sub-chip, and described fisrt feature is: the signal distribution plots of pressure sensitive signal comprises string combination configuration;
For storing second feature second stores sub-chip, described second feature is: the signal distribution plots of pressure sensitive signal comprises the combination configuration that at least two row parallel, and spacing distance between adjacent combination configuration is corresponding with the interval on craspedodrome sidewalk for visually impaired people between two row projections;
For storing third feature the 3rd stores sub-chip, described third feature is: the signal distribution plots of pressure sensitive signal comprises multiple combination configuration in array distribution, and the spacing distance combined between configuration is corresponding with the interval between round dot projection on prompting sidewalk for visually impaired people;
Wherein said signal distribution plots is that pressure sensitive signal represents with virtual point and arranges according to producing position coordinates the figure formed.
Preferably, intelligent shoe described above, wherein, described data processing chip comprises:
For determining the position coordinates determination structure of the generation position coordinates of pressure sensitive signal described in received each;
For according to receive each described in the generation position coordinates of pressure sensitive signal, the figure forming signal distribution plots under a coordinate system builds structure;
For formed signal distribution plots is compared with described fisrt feature, described second feature and described third feature respectively, when the mating with one of them of described fisrt feature, described second feature and described third feature at least partially of formed signal distribution plots, then determine that the signal characteristic of the described pressure sensitive signal received from described pressure transducer is corresponding with the described signal characteristic prestored; When all not the mating with any one of described fisrt feature, described second feature and described third feature at least partially of formed signal distribution plots, then determine the matching structure that the signal characteristic of the described pressure sensitive signal received from described pressure transducer is not corresponding with the described signal characteristic prestored.
Preferably, intelligent shoe described above, wherein, the bottom surface of whole described sole is evenly distributed with described pressure transducer.
Preferably, intelligent shoe described above, wherein, in the inside of described sole, through-thickness is evenly distributed with described pressure transducer.
Preferably, intelligent shoe described above, wherein, described intelligent shoe also comprises for receiving described cue, and according to described cue Vibration on Start-up with the vibrator of pointing out user to depart from sidewalk for visually impaired people, described vibrator is connected with described data processing chip.
Preferably, intelligent shoe described above, wherein, described intelligent shoe also comprises for receiving described cue, and play voice with the speech player of pointing out user to depart from sidewalk for visually impaired people according to described cue, described speech player is connected with described data processing chip.
Preferably, intelligent shoe described above, wherein, described intelligent shoe also comprises the gauge tap that power supply is opened with the described power supply of control and closed, and be arranged on described footwear body, wherein said power supply is connected with described storage chip and described data processing chip respectively.
Preferably, intelligent shoe described above, wherein, described pressure transducer is ceramic-type pressure transducer.
At least one in this utility model specific embodiment technique scheme has following beneficial effect:
By sole, multiple pressure transducer is set, and prestore sole by storage chip and step down in signal characteristic on sidewalk for visually impaired people, compare with the pressure sensitive signal gathered in good time, sole can be identified accurately whether for being in sidewalk for visually impaired people, so that correct travel route whether can be in by reminding blind in time.
Accompanying drawing explanation
Fig. 1 represents that this utility model specific embodiment is applicable to the structure diagram of the intelligent shoe of blind person;
Fig. 2 a to Fig. 2 c is in intelligent shoe described in this utility model embodiment, and sole arranges the concrete structure schematic diagram of several modes of pressure transducer;
Fig. 3 a and Fig. 3 b is respectively the planar structure schematic diagram of craspedodrome sidewalk for visually impaired people and prompting sidewalk for visually impaired people;
Fig. 4 a is the schematic diagram of the first version that sole contacts with craspedodrome sidewalk for visually impaired people;
Fig. 4 b is the schematic diagram of the second version that sole contacts with craspedodrome sidewalk for visually impaired people.
Detailed description of the invention
For making the technical problems to be solved in the utility model, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Fig. 1 is the structural representation that this utility model specific embodiment is applicable to the intelligent shoe of blind person, the footwear body 2 that described intelligent shoe comprises sole 1 and is arranged on sole 1, wherein said sole 1 be provided with multiple pressure transducer 10 at least partially, produce pressure sensitive signal for being squeezed when described sole 1 and protruding earth surface;
And described intelligent shoe also comprises:
Storage chip, to be squeezed the signal characteristic of produced pressure sensitive signal for prestoring described pressure transducer 10 when sole 1 steps down on sidewalk for visually impaired people;
The data processing chip be electrically connected with described pressure transducer 10 and described storage chip respectively, for the signal characteristic of the described pressure sensitive signal received from described pressure transducer 10 and the described signal characteristic prestored are compared, when judge not to correspondence time determine that sole is for departing from sidewalk for visually impaired people, and send cue.
Intelligent shoe described in this utility model embodiment, utilize the architectural feature of sidewalk for visually impaired people, prestore sole by storage chip and step down in signal characteristic on sidewalk for visually impaired people, compare with the pressure sensitive signal gathered in good time, when the pressure sensitive signal gathered is corresponding with the signal characteristic of storage in good time, illustrate that sole is for stepping down on sidewalk for visually impaired people, when it does not correspond, explanation departs from sidewalk for visually impaired people, to point out user.Whether the intelligent shoe that this principle makes, can identify sole for being in sidewalk for visually impaired people by the contact on sole and ground, accurately whether can be in correct travel route by reminding blind in time.
Further, preferably, after intelligent shoe is enabled, described data processing chip also comprises for after enabling when described intelligent shoe, also determine when not receiving described pressure sensitive signal in the scheduled time that sole is for departing from sidewalk for visually impaired people, and send the first prompting minor structure of cue.Adopt this first prompting minor structure, when blind person walk out sidewalk for visually impaired people step down on smooth road time, on sole, suffered by each pressure transducer, extruding force is even, and then make data processing chip receive pressure sensitive signal interruption from pressure transducer, determine that sole is for departing from sidewalk for visually impaired people in such cases, data processing chip sends cue in time.
The intelligent shoe of this utility model said structure, wherein storage chip and data processing chip can be arranged at the inside of sole 1, also can be arranged on footwear body 2, are positioned at surface or the inside of footwear body 2, or the inside being arranged at sole 1, one is arranged on footwear body 2.
Fig. 2 a to Fig. 2 c is in intelligent shoe described in this utility model embodiment, and sole 1 arranges the concrete structure schematic diagram of several modes of pressure transducer.Wherein, in the first structure, a wherein part for the bottom surface of sole 1 is provided with pressure transducer 10; Preferably, set pressure transducer 10 concentrates the central region being positioned at the bottom surface of sole 1; In the second structure, the bottom surface of whole sole 1 is uniformly distributed and is provided with pressure transducer 10; In the third structure, in the inside of sole 1, through-thickness is evenly distributed with pressure transducer 10.
Preferably, the mode that sole 1 arranges pressure transducer 10 is the combination of the third structure and the first structure, also namely except a wherein part for the bottom surface of sole 1 arranges except pressure transducer 10, the inside through-thickness of sole 1 is also uniformly distributed multiple pressure transducer 10; Or be the combination of the third structure and the second structure, be also namely provided with except pressure transducer 10 except the bottom surface of whole sole 1 is uniformly distributed, the inside through-thickness of sole 1 is also uniformly distributed multiple pressure transducer 10.
Above-mentioned sole 1 is arranged the mode of pressure transducer, not with above-mentioned several structures for restriction, as long as the projection that sole 1 touches with ground can be detected.Preferably, pressure transducer 10 can be ceramic-type pressure transducer, can certainly be limited to and be only ceramic-type pressure transducer, as long as the pressure transducer of any type of pressure when can sense that sole contacts with sidewalk for visually impaired people all can.
The intelligent shoe of this utility model above-described embodiment, set storage chip comprises:
First stores sub-chip, and for storing fisrt feature, described fisrt feature is: the signal distribution plots of pressure sensitive signal comprises string combination configuration;
Second stores sub-chip, for storing second feature, described second feature is: the signal distribution plots of pressure sensitive signal comprises the combination configuration that at least two row parallel, and spacing distance between adjacent combination configuration is corresponding with the interval on craspedodrome sidewalk for visually impaired people between two row projections;
3rd stores sub-chip, for storing third feature, described third feature is: the signal distribution plots of pressure sensitive signal comprises multiple combination configuration in array distribution, and the spacing distance combined between configuration is corresponding with the interval between round dot projection on prompting sidewalk for visually impaired people;
Wherein said signal distribution plots is that pressure sensitive signal represents with virtual point and arranges according to producing position coordinates the figure formed.
Fig. 3 a and Fig. 3 b is respectively the planar structure schematic diagram of craspedodrome sidewalk for visually impaired people and prompting sidewalk for visually impaired people.It will be understood by those skilled in the art that craspedodrome sidewalk for visually impaired people and arranging of sidewalk for visually impaired people of prompting meet international standard usually.Craspedodrome sidewalk for visually impaired people as shown in Figure 3 a, the strip bulge that the size of blind way brick 3 and surface are arranged has standard value, and the spacing a be usually parallel to each other between strip bulge 31 is 62mm, and the width b of each strip bulge 31 is 25mm; Prompting sidewalk for visually impaired people as shown in Figure 3 b, the round dot projection 32 that the size of blind way brick 3 and surface are arranged also has standard value, and the spacing c of adjacent round dot projection 32 between level and vertical direction is 50mm, and the diameter d of each round dot projection 32 is respectively 25mm.
Utilize craspedodrome sidewalk for visually impaired people and the above standard-sized projection of prompting set by sidewalk for visually impaired people, when the sole 1 stepped down on sidewalk for visually impaired people arranges pressure transducer 10, the distributed areas of extruded pressure transducer 10 are corresponding with size with the shape of sidewalk for visually impaired people projection.Such as, when stepping down on craspedodrome sidewalk for visually impaired people, sole 1 can be formed as the first form shown in Fig. 4 a with the contact of strip bulge 31 on blind way brick 3, also namely sole 1 only steps down on a strip bulge 31, sole 1 senses the pressure transducer 10 of extruding is formed as the combination configuration of string arrangement on sole 1, the spread pattern of this kind of extruded pressure transducer 10 is configured to fisrt feature; Also the second form shown in Fig. 4 b can be formed as, also namely sole 1 steps down on two strip bulges 31, sole 1 senses the combination configuration that the pressure transducer 10 of extruding is formed as two row and parallels on sole 1, the spread pattern of this kind of extruded pressure transducer 10 is configured to second feature; Certainly also there is the possibility stepped down on three strip bulges 31.When stepping down on prompting sidewalk for visually impaired people, composition graphs 3b, sole 1 contacts with the multiple round dot projections 32 on blind way brick 3 and extrudes, sole 1 senses the pressure transducer 10 of extruding interval on sole 1 is arranged, and the combination configuration be configured in array distribution, the spread pattern of this kind of extruded pressure transducer 10 is configured to third feature.
Based on above principle, first of storage chip is utilized to store sub-chip, the second sub-chip of storage and the 3rd stores sub-chip and stores above fisrt feature respectively, second feature and third feature, when data processing chip receives the pressure sensitive signal that pressure transducer 10 when sole 1 steps down on sidewalk for visually impaired people is squeezed transmitted, by determining the generation position coordinates of received pressure sensitive signal, according to receive each described in the generation position coordinates of pressure sensitive signal, signal distribution plots is formed under a coordinate system, and the fisrt feature will stored in formed signal distribution plots and storage chip, second feature and third feature are compared, namely can determine whether sole 1 is normally be in sidewalk for visually impaired people.
Therefore, described data processing chip specifically comprises:
Position coordinates determination structure, for determining the generation position coordinates of pressure sensitive signal described in received each;
Figure builds structure, for according to receive each described in the generation position coordinates of pressure sensitive signal, under a coordinate system, form signal distribution plots;
Matching structure, for formed signal distribution plots is compared with described fisrt feature, described second feature and described third feature respectively, when the mating with one of them of described fisrt feature, described second feature and described third feature at least partially of formed signal distribution plots, then determine that the signal characteristic of the described pressure sensitive signal received from described pressure transducer is corresponding with the described signal characteristic prestored; When all not the mating with any one of described fisrt feature, described second feature and described third feature at least partially of formed signal distribution plots, then determine that the signal characteristic of the described pressure sensitive signal received from described pressure transducer is not corresponding with the described signal characteristic prestored.
Described data processing chip builds structure and matching structure by above-mentioned position coordinates determination structure, figure, the signal distribution plots of extruded pressure transducer 10 can be built, when utilizing the signal distribution plots that formed to step down on sidewalk for visually impaired people with the sole prestored, be squeezed each possible signal characteristic of produced pressure sensitive signal of pressure transducer mates, can judge whether sole normally walks on sidewalk for visually impaired people accurately, and whether for departing from sidewalk for visually impaired people, when being defined as departing from sidewalk for visually impaired people, send cue.
In addition, based on above-mentioned structure and mode, data processing chip is by above-mentioned position coordinates determination structure, figure builds structure and matching structure, when utilizing the signal distribution plots that formed to step down on sidewalk for visually impaired people with the sole prestored, pressure transducer is squeezed each possible signal characteristic of produced pressure sensitive signal when mating, when matching structure mates with the signal characteristic prestored, can judge to determine sole step down in type on sidewalk for visually impaired people, as when determine the signal distribution plots that formed and fisrt feature or second feature to the time in of corresponding can determine that sole is for stepping down on craspedodrome sidewalk for visually impaired people, when determine formed signal distribution plots and third feature to the time in of corresponding can determine that sole is for stepping down on prompting sidewalk for visually impaired people.Based on this, preferably, data processing chip can also for send sole step down in the cue of type on sidewalk for visually impaired people, by installing voice playing device in intelligent shoe, play this cue, with real-time with speech play mode reminding user current residing sidewalk for visually impaired people type.
Preferably, the intelligent shoe of this utility model specific embodiment said structure, also comprises speech player, be connected with data processing chip, the cue that this speech player sends for receiving data processing chip, plays voice according to described cue, departs from sidewalk for visually impaired people to point out user; Or sidewalk for visually impaired people type residing for prompting user.
On the other hand, the intelligent shoe of said structure also can involving vibrations device, being connected, for receiving cue, according to cue Vibration on Start-up, departing from sidewalk for visually impaired people to point out user with data processing chip.
Speech player set by above intelligent shoe and/or vibrator, can be arranged on footwear body 2.
On the other hand, the intelligent shoe of this utility model embodiment also comprises power supply and controls the gauge tap that power supply opens and close, and be arranged on footwear body 2, wherein power supply is connected with storage chip and data processing chip respectively, for powering for storage chip and data processing chip.
In addition, utilize the setting of the gauge tap be connected with power supply, before intelligent shoe is enabled, can open gauge tap, make power supply be that storage chip and data processing chip are powered, two chips are started working; When intelligent shoe does not use, can closing control switch, make dump and the power supply between storage chip and data processing chip.
This utility model embodiment is applicable to the intelligent shoe of blind person, by sole, multiple pressure transducer is set, and prestore sole by storage chip and step down in signal characteristic on sidewalk for visually impaired people, compare with the pressure sensitive signal gathered in good time, sole can be identified accurately whether for being in sidewalk for visually impaired people, so that correct travel route whether can be in by reminding blind in time.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. one kind is applicable to the intelligent shoe of blind person, comprise sole and be arranged at the footwear body on sole, it is characterized in that, described sole be provided with multiple pressure transducer at least partially, produce pressure sensitive signal for being squeezed when described sole and protruding earth surface;
And described intelligent shoe also comprises:
To be squeezed the storage chip of signal characteristic of produced pressure sensitive signal for prestoring described pressure transducer when sole steps down on sidewalk for visually impaired people;
For the signal characteristic of the described pressure sensitive signal received from described pressure transducer and the described signal characteristic prestored are compared, when judge not to correspondence time determine that sole is for departing from sidewalk for visually impaired people, and sending the data processing chip of cue, described data processing chip is electrically connected with described pressure transducer and described storage chip respectively.
2. intelligent shoe as claimed in claim 1, it is characterized in that, described data processing chip also comprises for after enabling when described intelligent shoe, also determines that sole is for departing from sidewalk for visually impaired people when not receiving described pressure sensitive signal in the scheduled time, and sends the first prompting minor structure of cue.
3. intelligent shoe as claimed in claim 1, it is characterized in that, described storage chip comprises:
For storing fisrt feature first stores sub-chip, and described fisrt feature is: the signal distribution plots of pressure sensitive signal comprises string combination configuration;
For storing second feature second stores sub-chip, described second feature is: the signal distribution plots of pressure sensitive signal comprises the combination configuration that at least two row parallel, and spacing distance between adjacent combination configuration is corresponding with the interval on craspedodrome sidewalk for visually impaired people between two row projections;
For storing third feature the 3rd stores sub-chip, described third feature is: the signal distribution plots of pressure sensitive signal comprises multiple combination configuration in array distribution, and the spacing distance combined between configuration is corresponding with the interval between round dot projection on prompting sidewalk for visually impaired people;
Wherein said signal distribution plots is that pressure sensitive signal represents with virtual point and arranges according to producing position coordinates the figure formed.
4. intelligent shoe as claimed in claim 3, it is characterized in that, described data processing chip comprises:
For determining the position coordinates determination structure of the generation position coordinates of pressure sensitive signal described in received each;
For according to receive each described in the generation position coordinates of pressure sensitive signal, the figure forming signal distribution plots under a coordinate system builds structure;
For formed signal distribution plots is compared with described fisrt feature, described second feature and described third feature respectively, when the mating with one of them of described fisrt feature, described second feature and described third feature at least partially of formed signal distribution plots, then determine that the signal characteristic of the described pressure sensitive signal received from described pressure transducer is corresponding with the described signal characteristic prestored; When all not the mating with any one of described fisrt feature, described second feature and described third feature at least partially of formed signal distribution plots, then determine the matching structure that the signal characteristic of the described pressure sensitive signal received from described pressure transducer is not corresponding with the described signal characteristic prestored.
5. intelligent shoe as claimed in claim 1, it is characterized in that, the bottom surface of whole described sole is evenly distributed with described pressure transducer.
6. intelligent shoe as claimed in claim 1, it is characterized in that, in the inside of described sole, through-thickness is evenly distributed with described pressure transducer.
7. intelligent shoe as claimed in claim 1, it is characterized in that, described intelligent shoe also comprises for receiving described cue, and according to described cue Vibration on Start-up with the vibrator of pointing out user to depart from sidewalk for visually impaired people, described vibrator is connected with described data processing chip.
8. intelligent shoe as claimed in claim 1, it is characterized in that, described intelligent shoe also comprises for receiving described cue, and play voice with the speech player of pointing out user to depart from sidewalk for visually impaired people according to described cue, described speech player is connected with described data processing chip.
9. intelligent shoe as claimed in claim 1, is characterized in that, described intelligent shoe also comprises the gauge tap that power supply is opened with the described power supply of control and closed, and be arranged on described footwear body, wherein said power supply is connected with described storage chip and described data processing chip respectively.
10. intelligent shoe as claimed in claim 1, it is characterized in that, described pressure transducer is ceramic-type pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520386423.1U CN204684109U (en) | 2015-06-05 | 2015-06-05 | A kind of intelligent shoe being applicable to blind person |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520386423.1U CN204684109U (en) | 2015-06-05 | 2015-06-05 | A kind of intelligent shoe being applicable to blind person |
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| Publication Number | Publication Date |
|---|---|
| CN204684109U true CN204684109U (en) | 2015-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520386423.1U Withdrawn - After Issue CN204684109U (en) | 2015-06-05 | 2015-06-05 | A kind of intelligent shoe being applicable to blind person |
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| CN (1) | CN204684109U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104856845A (en) * | 2015-06-05 | 2015-08-26 | 京东方科技集团股份有限公司 | Intelligent shoe suitable for the blind |
| CN113171275A (en) * | 2021-04-23 | 2021-07-27 | 秦征楠 | Special shoes for blind people |
| CN113639739A (en) * | 2021-07-21 | 2021-11-12 | 重庆蓝岸通讯技术有限公司 | Blind road identification navigation system and method |
-
2015
- 2015-06-05 CN CN201520386423.1U patent/CN204684109U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104856845A (en) * | 2015-06-05 | 2015-08-26 | 京东方科技集团股份有限公司 | Intelligent shoe suitable for the blind |
| WO2016192302A1 (en) * | 2015-06-05 | 2016-12-08 | 京东方科技集团股份有限公司 | Intelligent shoe suitable for visually impaired person |
| US9799192B2 (en) | 2015-06-05 | 2017-10-24 | Boe Technology Group Co., Ltd. | Intelligent shoe for the blind |
| CN113171275A (en) * | 2021-04-23 | 2021-07-27 | 秦征楠 | Special shoes for blind people |
| CN113171275B (en) * | 2021-04-23 | 2023-07-07 | 保定登羿鞋服制造有限公司 | Shoes special for blind person |
| CN113639739A (en) * | 2021-07-21 | 2021-11-12 | 重庆蓝岸通讯技术有限公司 | Blind road identification navigation system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151007 Effective date of abandoning: 20170704 |
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| AV01 | Patent right actively abandoned |