CN202505587U - Electronic dot-matrix intelligent image tactile sensing device for blind - Google Patents
Electronic dot-matrix intelligent image tactile sensing device for blind Download PDFInfo
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- CN202505587U CN202505587U CN2012201096506U CN201220109650U CN202505587U CN 202505587 U CN202505587 U CN 202505587U CN 2012201096506 U CN2012201096506 U CN 2012201096506U CN 201220109650 U CN201220109650 U CN 201220109650U CN 202505587 U CN202505587 U CN 202505587U
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Abstract
The utility model discloses an electronic dot-matrix intelligent image tactile sensing device for the blind. The device comprises an image acquisition module, a data processing module, a current generation module and a tactile generation device, wherein the image acquisition module is used for acquiring shape, color and brightness information of objects around the blind; the data processing module is used for receiving the shape, color and brightness information, which is acquired by the image acquisition module, of the objects around the blind, outputting different control signals according to the information acquired by the image acquisition module, and controlling the current generation module and the tactile generation device to produce current stimulation of different ranges, intensities and frequencies to human bodies; the current generation module is used for generating the current of different intensities under the control of the data processing module, and the current stimulates the human bodies through the tactile generation device; and the tactile generation device is used for receiving the control signals output by the data processing module, and producing the current stimulation of different ranges, intensities and frequencies to the human bodies by using the current of different intensities which is generated by the current generation module. The device can quickly and accurately transfer the shape, color and brightness information of the objects in the ambient environment to the blind, and improves the life quality of the blind.
Description
Technical field
This utility model relates to a kind of sensing device, relates in particular to a kind of electronics dot matrix intelligent blind image touch sensing device.
Background technology
China is the maximum country of world population, simultaneously also is the maximum country of blind person in the world.The blind person is as the disadvantaged group of society; There is inconvenience in daily life; The blind person can be lived as the normal person, perceive the colorful environment of rich surrounding, get access to body form, color and monochrome information; To improve the blindman quality, be the key areas that people study always.And existing blindman aid only is applicable to the blind person when going out to take action separately, avoids owing to there not being the auxiliary potential safety hazard that causes of vision.Along with computer vision, mode identification technology and Development of Multimedia Technology, people begin to attempt using informationalized electronic installation assisting blind life.In the auxiliary field of blindman, generally adopt audition or sense of touch to replace vision to transmit the function of information.Though since blind person's loss of visual function, the extraordinary sensitivity of blind person's feeling function, even be more than the intact normal person's several times of visual performance.Therefore, the blindman aid has the possibility that adopts tactile data to transmit ambient condition information.
Application number is that the patent " assistor is used in blind person's walking " of CN02143161.2 discloses a kind of blind person's walking and uses assistor, possesses range cells, measures the distance of barrier; Transfer unit according to the barrier steric information of utilizing the measured distance of this range cells to obtain, transmits the existence of barrier with sense of touch or sound.This patent is utilized the object identification element to discern the object in the binocular camera shooting head image, and through sound identifying information is passed to the blind person mainly towards the identification of barrier.But also can there be problems in the blind person when using this device.The first, if there is multiple object in the environment, the blind person makes the blind person be difficult to differentiate independent voice prompt the voice prompt of hearing a plurality of objects simultaneously; The second, if there is certain time interval in a plurality of object voice prompts that the blind person hears, the time of then obtaining entire environment information will prolong, and has reduced the speed that the blind person obtains environmental information; The 3rd, because blind person's position is in the continuous variation, and this utility model is identical for the mode of new and old object identification; Do not possess apart from arbitration functions; The object that causes newly identifying is difficult to separate with the object areas that has identified, and it is inaccurate to cause information to transmit, and causes potential safety hazard.
Application number is that the patent " based on the blindman assisting device of object identification " of CN200710039632.9 discloses a kind of blindman assisting device based on object identification; Wherein: the kind of information of detected each object, the position coordinates in the image in the object information buffer cell storage environment, blind person's three dimensional local information, characteristic information and attention grade relatively; Whether have in the search coverage of object detection unit detected image pick off can be to be detected object; Whether compare detected object is the object of existing record; And deposit position coordinates and the classification information of object of new detected object in image in the object information buffer cell, and give the highest attention grade; Each object is with respect to blind person's three dimensional local information in the object range cells Measuring Object message buffer unit; The sensation substituting unit converts the object in the object information buffer cell into acoustical signal or haptic signal by blind person's requirement, make the blind person can the perception environment in the existence of object.This can continue to discern emerging object in the external environment condition, and passes through the accuracy rate and the speed of information, has improved the efficient of blind person's cognitive environment.
More than two kinds of utility models all only can be for the blind person points out road conditions, and can't realize the cognition of blind person for surrounding shape, color and brightness, can't promote blind person's quality of life.
The utility model content
The purpose of this utility model provides a kind of electronics dot matrix intelligent blind image touch sensing device; Can make the blind person perceive shape, color and the brightness of object in the living environment; Promote blind person's quality of life, can be blind person's trip simultaneously instant messages accurately is provided, avoid potential safety hazard.
This utility model adopts following technical proposals:
A kind of electronics dot matrix intelligent blind image touch sensing device comprises image capture module, is used to gather shape, color and the monochrome information of object on every side; Data processing module; Be used to receive ambient shape, color and the monochrome information that image capture module collects; And, control current generating module and sense of touch generator produce different range, intensity and frequency to human body galvanism according to the information output Different control signal that image capture module collects; Current generating module is used under the control of data processing module producing the electric current of varying strength, and electric current produces stimulation through the sense of touch generator to human body; The sense of touch generator is used to receive the control signal that data processing module is exported, and the electric current that utilizes current generating module to produce varying strength produces the galvanism of different range, intensity and frequency to human body.
Described data processing module comprises CPU and the buffer unit that is connected with CPU; CPU is converted into color and monochrome information the current signal of varying strength and frequency; The conversion formula that adopts is
; Wherein
,
and
are respectively R, G, B three primary colours frequency translation coefficient; R, G, B are respectively the red, green, blue three primary colours numerical value that image capture module collects, and
is each pixel frequency synthesis; The signal output part of described image capture module connects the signal input part of CPU; The signal output part of CPU connects the input of current generating module; The outfan of current generating module connects the current input terminal of sense of touch generator, and the control signal output ends of CPU connects the sense of touch generator.
Described sense of touch generator comprises the array of being made up of a plurality of conductors; The row link of each conductor that each lists all connects the outfan of current generating module through the row electrical switch; The capable link of each conductor of each row is all through capable electrical switch ground connection, and each capable electrical switch and the control signal input of row electrical switch are connected the control signal output ends of CPU respectively.
Be provided with the conductive rubber that contacts with human body skin on all conductors on the said sense of touch generator.
Described sense of touch generator is arranged on the belt that user wears.
Described image capture module comprises at least one ccd video camera, and the signal output part of each ccd video camera connects the signal input part of CPU respectively.
Described image capture module also comprises the ranging and range rate module, and the signal output part of ranging and range rate module connects the signal input part of CPU, and the focus control signal outfan of CPU connects the focusing signal input part of ccd video camera.
Described image capture module comprises two ccd video cameras.
Described image capture module is arranged on the helmet that user wears.
This utility model utilizes image capture module simulation human body eyes to see body form, color and monochrome information in the surrounding; And with information through the data processing module analyzing and processing; Pass through Different control signal controlling sense of touch generator and current generating module by data processing module; Produce the skin of the galvanism user health specific part of zones of different, frequency and intensity; Thereby the shape, color and the monochrome information that in user images information, are comprised, this utility model can transmit body form in the surrounding, color and monochrome information to the blind person quickly and accurately, only changed in the existing product can the transmitter shape limitation; Make the blind person can be as the colorful environment of normal person's perception rich surrounding; Improve blind person's quality of life, for blind person's trip provides instant messages accurately, avoided potential safety hazard simultaneously.
Description of drawings
Fig. 1 is the theory diagram of the said sensing device of this utility model;
Fig. 2 is the partial circuit diagram of sense of touch generator in this utility model.
The specific embodiment
Extremely shown in Figure 3 like Fig. 1; The described electronics dot matrix of this utility model intelligent blind image touch sensing device comprises image capture module; The signal output part of image capture module connects the signal input part of data processing module, and the signal output part of data processing module connects the signal input part of sense of touch generator.
Described image capture module comprises at least one ccd video camera; The signal output part of each ccd video camera connects the signal input part of CPU respectively; Ccd video camera can directly be transformed into digital signal with image, and the digital signal of its output comprises luminance signal, red (R), green (G), blue (B) signal.In the present embodiment, in order to reach better result of use, image capture module adopts two ccd video cameras, is used for simulating the human body eyes and sees body form, color and monochrome information in the surrounding.Two ccd video cameras are separated by a distance and be horizontally disposed with, and can simulate the differential seat angle of human body eyes when seeing same object, so that form stereoscopic visual effect.For make ccd video camera in the user motor process, remain focal length accurately, the image recording definition is the highest, this utility model is provided with the ranging and range rate module in image capture module.The signal output part of ranging and range rate module connects the signal input part of CPU, and the focus control signal outfan of CPU connects the focusing signal input part of ccd video camera.The ranging and range rate module can record the movement velocity of user automatically; And can in 50 meters scope, accurately record the distance between subject and the user; The ranging and range rate module is transferred to CPU with speed that records and distance signal, and CPU automatically adjusts through the focal length to ccd video camera after the analyzing and processing.In the present embodiment, image capture module is arranged on the helmet that user wears, and is convenient to simulate the human body eyes and carries out IMAQ.Wherein, ccd video camera can adopt 540TVL superminiature pinhole camera, possesses automatic backlight compensation, autoelectrinic shutter, automatic gain control, AWB, the colour/black and white function of conversion automatically; The ranging and range rate module adopts the microwave radar distance measuring sensor; The microwave radar distance measuring sensor adopts aluminium alloy microwave waveguide cavity oscillation device; Have the remote microwave distance measurement function, the microwave radar distance measuring sensor is provided simultaneously, ranging can reach more than the 100m; Double end is adopted in transmitting-receiving, has tachogenerator and distance measuring sensor function.Because above-mentioned two products are the commercially available prod, its installation and application repeats no more at this.
Described data processing module comprises CPU, buffer unit and is used to produce the current generating module of varying strength electric current; CPU connects buffer unit; The signal output part of described image capture module connects the signal input part of CPU; The signal output part of CPU connects the input of current generating module; The outfan of current generating module connects the current input terminal of sense of touch generator, and the control signal output ends of CPU connects the sense of touch generator.In the present embodiment; The ccd video camera of image capture module is the form storage of 300 * 200 (can require to confirm according to camera performance and real work) with pixel with the image that collects; Inclusion shape, color and monochrome information in the image, this information is transferred into CPU.CPU is according to selected video mode; Work schedule according to CCD; The scanning speed that is no less than 15 frames with per second; According to the rgb pixel format, and the color and the monochrome information of each pixel converted the colour element signal of ccd video camera transmission in the acquisition module into the Different control signal through conversion formula, conversion formula is specifically introduced hereinafter.CPU produces the galvanism signal of varying strength through the control current generating module, and controls the galvanism signal that the sense of touch generator produces different frequency and zone, and the human body skin that contacts with the sense of touch generator is produced sense of touch.In order to keep central processing unit for processing speed, CPU also is connected with buffer unit.In the present embodiment, current generating module can utilize booster circuit generation voltage to be 100V under central processing unit controls, and current intensity is 0 to 8mA safe current, belongs to sophisticated prior art, repeats no more at this; CPU can adopt series microprocessors such as ARM9; Buffer unit adopts high speed SDRAM type chip.
Described sense of touch generator comprises the array of being made up of a plurality of conductors; The row link of each conductor that each lists all connects the outfan of current generating module through the row electrical switch; The capable link of each conductor of each row is all through capable electrical switch ground connection, and each capable electrical switch and the control signal input of row electrical switch are connected the control signal output ends of CPU respectively.Said capable electrical switch and row electrical switch can adopt audion, FET or controllable silicon.
The array that a plurality of conductors are formed in the said sense of touch generator; Its array size should conform to the image pixel format of image capture module collection and storage; In the present embodiment; The sense of touch generator adopts 300 * 200 conductor array, conforms to ccd video camera collection and the form that stores according to 300 * 200 pixels.Fig. 2 is that example describes with one 8 * 8 conductor array; Wherein electrical switch adopts audion; As shown in Figure 2; The capable link of each conductor of the first row R1 all connects the colelctor electrode of audion QR1, the grounded emitter of audion QR1, and the base stage of audion QR1 connects the control signal output ends of CPU; The row link of each conductor of the first row L1 all connects the emitter stage of audion QL1, and the colelctor electrode of audion QL1 connects the outfan of current generating module, and the base stage of audion QL1 connects the control signal input of CPU; The capable link of each conductor of the second row R2 all connects the colelctor electrode of audion QR2, the grounded emitter of audion QR2, and the base stage of audion QR2 connects the control signal output ends of CPU; The row link of each conductor of secondary series L2 all connects the emitter stage of audion QL2, and the colelctor electrode of audion QL2 connects the outfan of current generating module, and the base stage of audion QL2 connects the control signal input of CPU; By that analogy, the capable link of each conductor of the 8th row R8 all connects the colelctor electrode of audion QR8, the grounded emitter of audion QR8, and the base stage of audion QR8 connects the control signal output ends of CPU; The row link of each conductor of the 8th row L8 all connects the emitter stage of audion QL8, and the colelctor electrode of audion QL8 connects the outfan of current generating module, and the base stage of audion QL8 connects the control signal input of CPU.When any conductor in the sense of touch generator has only the audion conducting simultaneously that the conductor two ends connect separately, just there is electric current to pass through on the conductor.For example, have only audion QR1 and audion QL1 under the control of CPU during conducting simultaneously, the conductor that is in the first row L1, the first row R1 just has electric current to pass through.In Fig. 2, audion is also replaceable to be FET or controllable silicon, plays the effect of electrical switch.
On the sense of touch generator all conductors on be provided with the conductive rubber that contacts with human body skin, conductive rubber plays the effect that the transmission current signal stimulates human body on the one hand, can improve comfort level and tactile sensing degree that human body is worn on the other hand.In the present embodiment, the sense of touch generator adopts 300 * 200 conductor array, conforms to the image storage form that ccd video camera collects, and 300 * 200 conductor array can be arranged to the belt shape, and is easy to use.The conductive rubber that uses in the sense of touch generator is prior art, repeats no more at this.
This utility model sends control signal by CPU when work, the control current generating module produces the galvanism signal of varying strength and expresses the monochrome information in the image information; CPU is utilized the object-by shape information that obtains after the analyzing and processing, expresses the object-by shape information in the image information through the audion conducting of control varying number, position; Simultaneously, CPU plays the effect of controlling the galvanism signal frequency through the turn-on frequency of control audion, and with the object color information in the galvanism signal representation image information of this different frequency.Therefore; CPU can be passed through Different control signal controlling sense of touch generator; Make the sense of touch generator produce the skin of the galvanism user health specific part of zones of different, frequency and intensity; Produce the sensation of various graphic plottings, thus the shape, color and the monochrome information that in user images information, are comprised.Can in data processing module, add keyboard input module in this utility model, be used to be provided with the items of equipment parameter.Simultaneously; In order to reach better result of use; The saving format of ccd video camera images acquired can be according to the user demand setting in this utility model; Be not limited only to 300 * 200 storage format, the conductor array size of the generator of sense of touch simultaneously conforms to the saving format of ccd video camera images acquired and gets final product.
CPU is converted into color and monochrome information the current signal of varying strength and frequency in this utility model; The conversion formula that adopts is
; Wherein
,
and
are R, G, B three primary colours frequency translation coefficient; R, G, B are respectively the red, green, blue three primary colours numerical value that image capture module collects, and
is each pixel frequency synthesis.According to the frequency range that human body can be differentiated, the scope of each pixel frequency synthesis
should be between 0 to 1110Hz.Therefore; According to the three primary colours composition principle; Any color can use red (R), green (G), blue (B) these three kinds of colors to form by different mixed; Simultaneously; Receive human body skin can differentiate the restriction of frequency range 0 to 1110Hz; Can set R, G, B three primary colours maximum is 10; Thereby can confirm that the peak frequency coefficient is:
=100,
=10,
=1.When setting three primary colours frequency translation coefficients
=100;
=10,
=1 o'clock; The red, green, blue three primary colours numerical value that image capture module collects changes arbitrarily in the scope of 0-10; Each the pixel frequency synthesis
that calculates through conversion formula is in the distinguishable frequency range of human body all less than 1110Hz.As R, G, when B three primary colours numerical value all gets 10;
is 1110, expresses color this moment and is white; As R, G, when B three primary colours numerical value all gets 0;
is 0, and express color this moment is black.R, G, B three primary colours frequency translation coefficient
,
and
also can be set at other numerical value; Also can normally use; But result of use is not good; May cause the patient to differentiate or resolving effect bad, influence the result of use of whole device.
Claims (9)
1. an electronics dot matrix intelligent blind image touch sensing device is characterized in that: comprise image capture module, be used to gather shape, color and the monochrome information of object on every side; Data processing module; Be used to receive ambient shape, color and the monochrome information that image capture module collects; And, control current generating module and sense of touch generator produce different range, intensity and frequency to human body galvanism according to the information output Different control signal that image capture module collects; Current generating module is used under the control of data processing module producing the electric current of varying strength, and electric current produces stimulation through the sense of touch generator to human body; The sense of touch generator is used to receive the control signal that data processing module is exported, and the electric current that utilizes current generating module to produce varying strength produces the galvanism of different range, intensity and frequency to human body.
2. electronics dot matrix intelligent blind image touch sensing device according to claim 1; It is characterized in that: described data processing module comprises CPU and the buffer unit that is connected with CPU; CPU is converted into color and monochrome information the current signal of varying strength and frequency; The conversion formula that adopts is
; Wherein
,
and
are respectively R, G, B three primary colours frequency translation coefficient; R, G, B are respectively the red, green, blue three primary colours numerical value that image capture module collects, and
is each pixel frequency synthesis; The signal output part of described image capture module connects the signal input part of CPU; The signal output part of CPU connects the input of current generating module; The outfan of current generating module connects the current input terminal of sense of touch generator, and the control signal output ends of CPU connects the sense of touch generator.
3. electronics dot matrix intelligent blind image touch sensing device according to claim 2; It is characterized in that: described sense of touch generator comprises the array of being made up of a plurality of conductors; The row link of each conductor that each lists all connects the outfan of current generating module through the row electrical switch; The capable link of each conductor of each row is all through capable electrical switch ground connection, and each capable electrical switch and the control signal input of row electrical switch are connected the control signal output ends of CPU respectively.
4. electronics dot matrix intelligent blind image touch sensing device according to claim 3 is characterized in that: be provided with the conductive rubber that contacts with human body skin on all conductors on the said sense of touch generator.
5. according to claim 1,2,3 or 4 described electronics dot matrix intelligent blind image touch sensing devices, it is characterized in that: described sense of touch generator is arranged on the belt that user wears.
6. according to claim 2,3 or 4 described electronics dot matrix intelligent blind image touch sensing devices; It is characterized in that: described image capture module comprises at least one ccd video camera, and the signal output part of each ccd video camera connects the signal input part of CPU respectively.
7. electronics dot matrix intelligent blind image touch sensing device according to claim 6; It is characterized in that: described image capture module also comprises the ranging and range rate module; The signal output part of ranging and range rate module connects the signal input part of CPU, and the focus control signal outfan of CPU connects the focusing signal input part of ccd video camera.
8. electronics dot matrix intelligent blind image touch sensing device according to claim 7, it is characterized in that: described image capture module comprises two ccd video cameras.
9. electronics dot matrix intelligent blind image touch sensing device according to claim 6 is characterized in that: described image capture module is arranged on the helmet that user wears.
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| CN2012201096506U CN202505587U (en) | 2012-03-22 | 2012-03-22 | Electronic dot-matrix intelligent image tactile sensing device for blind |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657572A (en) * | 2012-03-22 | 2012-09-12 | 张东林 | Electronic dot-matrix type intelligent image touch sensing device and sensing implementation method for the blind |
| CN108279780A (en) * | 2018-03-01 | 2018-07-13 | 京东方科技集团股份有限公司 | Wearable device and control method |
| CN109493694A (en) * | 2019-01-18 | 2019-03-19 | 京东方科技集团股份有限公司 | Reading aid for blindmen and the method for utilizing reading aid for blindmen |
-
2012
- 2012-03-22 CN CN2012201096506U patent/CN202505587U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657572A (en) * | 2012-03-22 | 2012-09-12 | 张东林 | Electronic dot-matrix type intelligent image touch sensing device and sensing implementation method for the blind |
| CN102657572B (en) * | 2012-03-22 | 2013-11-06 | 郑州科兴电子信息科技有限公司 | Electronic dot-matrix type intelligent image touch sensing device and sensing implementation method for the blind |
| CN108279780A (en) * | 2018-03-01 | 2018-07-13 | 京东方科技集团股份有限公司 | Wearable device and control method |
| CN108279780B (en) * | 2018-03-01 | 2020-07-24 | 京东方科技集团股份有限公司 | Wearable device and control method |
| US10929668B2 (en) | 2018-03-01 | 2021-02-23 | Beijing Boe Optoelectronics Technology Co., Ltd. | Wearable device and control method |
| CN109493694A (en) * | 2019-01-18 | 2019-03-19 | 京东方科技集团股份有限公司 | Reading aid for blindmen and the method for utilizing reading aid for blindmen |
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