CN104535156A - Intelligent identity recognition weighing scale adopting array type scanning and automatic identity recognition method thereof - Google Patents
Intelligent identity recognition weighing scale adopting array type scanning and automatic identity recognition method thereof Download PDFInfo
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Abstract
The invention discloses an intelligent identity recognition weighing scale adopting array type scanning and an automatic identity recognition method thereof. The intelligent identity recognition weighing scale comprises a weighing scale body, wherein the weighing scale body comprises a bearing base plate, a weight measuring pressure sensor and a substrate which are overlapped sequentially from top to bottom; the weighing scale is characterized in that a top panel is arranged on the bearing base plate; a switch circuit board is arranged between the top panel and the bearing base plate; reset type key switches are arranged on the switch circuit board; one end, far away from the switch circuit board, of each reset type key switch, passes through the top panel and extends to the upper part of the top panel; the reset type key switches are arranged on the top panel in N rows and M lines of arrays; all the reset type key switches form a switch pressure sensor matrix, wherein N and M are both larger than or equal to 40, the measurement is rapid, the identity of a user can be immediately determined according to the size of the foot surface without enabling the user to take off shoes or socks, and meanwhile, the identity of the user can be recognized more accurately.
Description
Technical field
The present invention relates to Intelligent weight scale, specifically array scanning smart identity identification scale and automatic identification identity method thereof.
Background technology
Scale is the survey instrument that family commonly uses, common scale is only used for measuring individual weight, the patent No. 201320509748 has disclosed a kind of scale that can identify individual identity, the structure of this scale comprises panel, panel is provided with body weight display, described lower panels is provided with pressure transducer, this scale also comprises pin tall sensor, multiple temperature sensors for perception pin temperature that pin tall sensor adopts yi word pattern side by side to arrange, when pin is placed into after on these temperature sensors by user, temperature sensor can the distance of 2 temperature sensors at the most edge of perception, finally confirm that the pin of this user is long, with the long identity confirming this user of pin, this identifiable design identity scale can only obtain simply rough sole length information by one-dimensional measurement, and owing to employing the slower temperature sensor of response speed as acquisition mode, its acquisition and processing needs comparatively high latency, and the temperature transition effect of marginal portion can cause measure and inaccurate, because thermometric is a thermometric line, overlap so most for pin long portion position must will be adjusted to by user at every turn with thermometric line, because the length of the pin of the human body of approximate height is comparatively close, therefore without the identity identifying user comparatively accurately, the father and son that such as height is close, the pin of 2 people is long very close, but the instep size of 2 people but has bigger difference, adopt above-mentioned measurement mechanism, user identity cannot be judged accurately, otherwise each measurement result has very big difference, owing to being temperature sensor, so must measure barefoot, use more difficult in the colder situation of weather.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of array scanning smart identity identification scale and automatic identification identity method thereof, the present invention then have employed the sensor of the homing position type keyswitch composition measuring and calculating instep size based on array arrangement, this sensing mode is effective fast, and sole two-dimensional signal more accurately can be obtained, judge more helpful for identification, can estimating precision be improved; Because whole panel effective coverage is all as data collection zone, as long as so user ensures pin to be placed on this region, worried without the need to the particular location adjustment for pin; Owing to have employed pressure acquisition mode, so user can use on an equal basis when putting on socks, more convenient like this user uses product when weather is colder.
Implementation of the present invention is as follows:
Array scanning smart identity identification scale, comprise an individual weight scale body, scale body comprises load-bearing substrate overlapping successively from top to bottom, check weighing pressure transducer, base plate, it is characterized in that: load-bearing substrate is provided with top panel, switching circuit board is provided with between top panel and load-bearing substrate, switching circuit board is provided with homing position type keyswitch, homing position type keyswitch runs through top panel away from one end of switching circuit board and extends to above top panel, and homing position type keyswitch carries out matrix according to N capable M row is arranged on top panel, all homing position type keyswitches form a closing pressure sensor matrices, the number of N and M is all be more than or equal to 40, and the clearance distance between the adjacent reduction formula keyswitch of orientation of being expert at is more than or equal to 1cm, and the clearance distance between the adjacent reduction formula keyswitch of row orientation is more than or equal to 1cm, check weighing pressure transducer is all connected with automatic recognition system with output terminal with the input end of switching circuit board.
Design concept of the present invention is: because the length of the pin of the human body of approximate height is comparatively close, therefore without the identity identifying user comparatively accurately, the father and son that such as height is close, the pin of 2 people is long very close, but the instep size of 2 people but has bigger difference, adopts typical measuring arrangements, user identity cannot be judged accurately, the present invention utilizes instep size as the standard judged, increases the accuracy of mensuration, can better identify user identity with this.The homing position type keyswitch of array and switching circuit board form the sensor measuring instep size, this sensor utilizes human bady gravitational to be suppressed by homing position type keyswitch, make the homing position type keyswitch closed formation circuit turn-on in oppressed region, like this, again through scan process, automatic recognition system can scan those homing position type keyswitches and close conducting, the closed conducting useless of those homing position type keyswitches, so just can determine the instep size of this user, judge the identity of this user by this instep size.And after using homing position type keyswitch, sensing can be carried out without body temperature, therefore user does not need to take off socks or shoes, so just convenient a lot, and the process of whole mensuration is also very fast, without the need to as traditional measurement device, needs to wait for the time for a long time.The present invention then have employed the homing position type keyswitch based on array arrangement, and this sensing mode is effective fast, and can obtain sole two-dimensional signal more accurately, judges more helpful for identification; Because whole panel effective coverage is all as data collection zone, as long as so user ensures pin to be placed on this region, worried without the need to the particular location adjustment for pin; Owing to have employed pressure acquisition mode, so user can use on an equal basis when putting on socks, more convenient like this user uses product when weather is colder.
Preferably, described homing position type keyswitch is pot cover switch, pot cover switch comprises the guidepost running through top panel, one end of guidepost switch-oriented circuit board is connected with metal clips conducting film, metal clips conducting film is arranged on switching circuit board, metal clips conducting film is the pot cover shape metal clips that a protrusion direction points to top panel, 2 pot cover switch static contacts are provided with below each metal clips conducting film, when guidepost moves down, recessed after the distortion of guidepost compressing metal clips conducting film, the round central area of metal clips conducting film touches pot cover switch static contact, conducting loop is formed between 2 pot cover switch static contacts, in 2 pot cover switch static contacts, one is output terminal, one is input end, one of them pot cover switch static contact connecting power line and automatic recognition system, another pot cover switch static contact is connected to automatic recognition system, 2 pot cover switch static contacts and a metal clips conducting film form a pot cover switch.
The present invention adopts pot cover switch as homing position type keyswitch, its reason is: the metal clips conducting film (Metal dome array) of pot cover switch, it is one piece of PET thin slice comprising metal clips (pot young sheet), be used on the wiring boards such as PCB or FPC and use as switch, plays the effect of an important sense of touch type switch between user and instrument.Compared with traditional silica gel push-button, conducting film has more better feel, longer life-span, also indirectly can improve the production efficiency of all types of switches using conducting film.Metal clips on metal clips conducting film is positioned at the conducting position (major part is positioned at the top on wiring board) on pcb board, and when being subject to pressing, the central point of shell fragment is recessed, touch the circuit on PCB, thus formation loop, electric current passes through, and whole product is just able to normal work.
Automatic recognition system comprises single-chip microcomputer, line scanning channel selecting chip, column scan channel selecting chip, the input end of the homing position type keyswitch of the every a line in closing pressure sensor matrices all passes through line scanning channel selecting chip and is connected with single-chip microcomputer, the output terminal of the homing position type keyswitch of each row in closing pressure sensor matrices all passes through column scan channel selecting chip and is connected with single-chip microcomputer, and single-chip microcomputer is also connected with storer.
In order to increase the comfort level of instep.Top panel is flexible material.
The automatic identification identity method of array scanning smart identity identification scale, comprises the following steps:
1), user steps on family expenses scale, active user's body weight value is obtained according to check weighing pressure transducer, when user steps down on scale time, the reason due to user's compression weight causes the homing position type keyswitch conducting under foot palm surface, and the homing position type keyswitch outside foot palm surface disconnects; Now, single-chip microcomputer, by column scan channel selecting chip and line scanning channel selecting chip scanning closing pressure sensor matrices, just can obtain active user's foot palm surface information;
2) active user's foot palm surface information Fu and the matching degree Pi preserving user's foot palm surface information, is calculated:
；
Wherein, Wu is active user's body weight value, and Fu is active user's foot palm surface information, and active user's foot palm surface information is two-dimensional array, and numerical value is that 1 to represent correspondence position be sole inner region, and numerical value is that 0 to represent correspondence position be sole exterior domain; Set and preserve user as i=1,2,3,4 ..., n, i-th nearest weight data having preserved user is Wi, and nearest foot palm surface information is Fi;
Defined function f (x) is: x>0, f (x)=0; Otherwise, x≤0, f (x)=1;
Defined function T (x, y) is template matching algorithm, and its computation process is as follows:
Intercept active user's foot palm surface information Fu, intercept the foot palm surface effective coverage of left foot or right crus of diaphragm, definition effective coverage is long is lu, and wide is wu, the unit that effective coverage is long and wide: pixel;
Read the left foot foot palm surface information having stored user i left foot or right crus of diaphragm, its effective coverage is long is li, and wide is wi;
Comparing the length of two data and wide respectively, getting large person wherein as needing the long lc in region of contrast and wide wc; That is, if lu>li, lc=lu, otherwise, lc=li; If wu>wi, wc=wu, on the contrary wc=wi;
In effective coverage, calculate Fu and Fi pixel consistance, account form is:
；
3), decision process is as follows:
All Pi, the i=0 that are calculating, 1,2 ..., in n, find maximum Pi value Pmax, its respective user is ID (max),
If Pmax does not exceed threshold value PTH, illustrate and not find with current-user data coupling in the user used preserved, then automatically for active user creates a new user ID (n+1);
If Pmax exceedes threshold value PTH, the user that have found and mate with current-user data is described, then current-user data is filed in user ID (max) in all users preserved;
If find the user of coupling, then replace the up-to-date weight data Wmax of user of coupling with the weight data Wu of active user, replace the up-to-date foot palm surface information Fmax of user of coupling with the foot palm surface information Fu of active user.
The process obtaining active user's foot palm surface information is:
The homing position type keyswitch of its overlay area can be subdued and make the moving contact below it be subjected to displacement the circuit turn-on of the switching circuit board below causing by instep under weight effect;
A corresponding button of homing position type keyswitch, the output terminal of the homing position type keyswitch of each row in closing pressure sensor matrices all connects same KeyOut line, then native system possesses M KeyOut line, the input end of the homing position type keyswitch of each row in closing pressure sensor matrices all connects same KeyIn line, then native system possesses N number of KeyIn line, M KeyOut line be respectively KeyOut1, KeyOut2 ..., KeyOutM, N number of KeyIn line be respectively KeyIn1, KeyIn2 ..., KeyInN;
Start foot palm surface sensor scan program:
Arranging any one KeyOut is low level, and all the other KeyOut are set to floating, detect KeyIn respectively; If homing position type keyswitch is pressed arbitrarily, then the KeyIn of this row is low level, otherwise is high level;
After all being scanned by all homing position type keyswitches, can know which homing position type keyswitch conducting, the non-conducting of which homing position type keyswitch, the corresponding numerical value of low level is 1, and the corresponding numerical value of high level is 0; We just can obtain the numerical result of a two dimensional image like this.
The invention has the advantages that: finding speed is fast, can in moment according to instep size determination user identity, without the need to taking off shoes or socks, the identity of user can be told more accurately simultaneously, guidepost can also play the effect of foot massages, more useful to health, the scale of traditional temperature measuring then needs light pin to measure, minute needs human body to stand contact temperature sensor more than at least 5 seconds, appointed area must be stood on simultaneously, light pin will be longer at the minute in winter, easily cause user sick.
Accompanying drawing explanation
Fig. 1 is the annexation of automatic recognition system and closing pressure sensor matrices.
Fig. 2 is the vertical view that closing pressure sensor matrices is arranged on top panel.
Fig. 3 is the schematic diagram that instep stands on closing pressure sensor matrices, A and B in figure represents the region on instep contact-making switch pressure transducer matrix.
Fig. 4 is the schematic diagram that instep does not trample guidepost.
Fig. 5 is the schematic diagram that instep tramples guidepost.
Fig. 6 is the closing pressure sensor matrices under the rectangular array situation of 4X4.
Fig. 7 is mensuration flow process of the present invention.
Label in figure is expressed as: 1, automatic recognition system; 2, closing pressure sensor matrices; 3, top panel; 4, homing position type keyswitch; 5, load-bearing substrate; 6, check weighing pressure transducer; 7, base plate; 11, column scan channel selecting chip; 12, line scanning channel selecting chip; 13, single-chip microcomputer; 21, the capable array of homing position type keyswitch; 22, homing position type keyswitch column array; 41, guidepost; 42, metal clips conducting film; 43, switching circuit board; 44, pot cover switch static contact.
Embodiment
Embodiment one
As shown in Figures 1 to 7.
Because the length of the pin of the human body of approximate height is comparatively close, therefore without the identity identifying user comparatively accurately, the father and son that such as height is close, the pin of 2 people is long very close, but the instep size of 2 people but has bigger difference, adopts typical measuring arrangements, user identity cannot be judged accurately, the present invention utilizes instep size as the standard judged, increases the accuracy of mensuration, can better identify user identity with this.Homing position type keyswitch 4 and the switching circuit board of array form the sensor measuring instep size, this sensor utilizes human bady gravitational to be suppressed by homing position type keyswitch 4, make the closed formation circuit turn-on of the homing position type keyswitch 4 in oppressed region, like this, again through scan process, automatic recognition system 1 can scan those homing position type keyswitches 4 and close conducting, the closed conducting useless of those homing position type keyswitches 4, so just can determine the instep size of this user, judge the identity of this user by this instep size.And after using homing position type keyswitch 4, sensing can be carried out without body temperature, therefore user does not need to take off socks or shoes, so just convenient a lot, and the process of whole mensuration is also very fast, without the need to as traditional measurement device, needs to wait for the time for a long time.The present invention then have employed the homing position type keyswitch 4 based on array arrangement, and this sensing mode is effective fast, and can obtain sole two-dimensional signal more accurately, judges more helpful for identification; Because whole panel effective coverage is all as data collection zone, as long as so user ensures pin to be placed on this region, worried without the need to the particular location adjustment for pin; Owing to have employed pressure acquisition mode, so user can use on an equal basis when putting on socks, more convenient like this user uses product when weather is colder.
Preferably, described homing position type keyswitch 4 is pot cover switch, pot cover switch comprises the guidepost 41 running through top panel 3, one end of guidepost 41 switch-oriented circuit board 43 is connected with metal clips conducting film 42, metal clips conducting film 42 is arranged on switching circuit board 43, metal clips conducting film 42 is the pot cover shape metal clips that a protrusion direction points to top panel 3, 2 pot cover switch static contacts 44 are provided with below each metal clips conducting film 42, when guidepost 41 moves down, guidepost 41 is oppressed metal clips conducting film 42 and is out of shape rear recessed, the round central area of metal clips conducting film 42 touches pot cover switch static contact 44, conducting loop is formed between 2 pot cover switch static contacts 44, in 2 pot cover switch static contacts 44, one is output terminal, one is input end, one of them pot cover switch static contact 44 connecting power line and automatic recognition system 1, another pot cover switch static contact 44 is connected to automatic recognition system 1, 2 pot cover switch static contacts 44 and a metal clips conducting film 42 form a pot cover switch.
The present invention adopts pot cover switch as homing position type keyswitch 4, its reason is: the metal clips conducting film (Metal dome array) of pot cover switch, it is one piece of PET thin slice comprising metal clips (pot young sheet), be used on the wiring boards such as PCB or FPC and use as switch, plays the effect of an important sense of touch type switch between user and instrument.Compared with traditional silica gel push-button, conducting film has more better feel, longer life-span, also indirectly can improve the production efficiency of all types of switches using conducting film.Metal clips on metal clips conducting film is positioned at the conducting position (major part is positioned at above the finger on wiring board) on pcb board, and when being subject to pressing, the central point of shell fragment is recessed, touch the circuit on PCB, thus formation loop, electric current passes through, and whole product is just able to normal work.
Automatic recognition system 1 comprises single-chip microcomputer 13, line scanning channel selecting chip 12, column scan channel selecting chip 11, the input end of the homing position type keyswitch 4 of the every a line in closing pressure sensor matrices 2 all passes through line scanning channel selecting chip 12 and is connected with single-chip microcomputer, the output terminal of the homing position type keyswitch 4 of each row in closing pressure sensor matrices 2 all passes through column scan channel selecting chip 11 and is connected with single-chip microcomputer, and single-chip microcomputer is also connected with storer.
In order to increase the comfort level of instep.Top panel 3 is flexible material.
The automatic identification identity method of array scanning smart identity identification scale, comprises the following steps:
1), user steps on family expenses scale, active user's body weight value is obtained according to check weighing pressure transducer 6, when user steps down on scale time, reason due to user's compression weight causes homing position type keyswitch 4 conducting under foot palm surface, and the homing position type keyswitch 4 outside foot palm surface disconnects; Now, single-chip microcomputer, by column scan channel selecting chip 11 and line scanning channel selecting chip 12 scanning switch pressure transducer matrix 2, just can obtain active user's foot palm surface information;
2) active user's foot palm surface information Fu and the matching degree Pi preserving user's foot palm surface information, is calculated:
；
Wherein, Wu is active user's body weight value, and Fu is active user's foot palm surface information, and active user's foot palm surface information is two-dimensional array, and numerical value is that 1 to represent correspondence position be sole inner region, and numerical value is that 0 to represent correspondence position be sole exterior domain; Set and preserve user as i=1,2,3,4 ..., n, i-th nearest weight data having preserved user is Wi, and nearest foot palm surface information is Fi;
Defined function f (x) is: x>0, f (x)=0; Otherwise, x≤0, f (x)=1;
Defined function T (x, y) is template matching algorithm, and its computation process is as follows:
Intercept active user's foot palm surface information Fu, intercept the foot palm surface effective coverage of left foot or right crus of diaphragm, definition effective coverage is long is lu, and wide is wu, the unit that effective coverage is long and wide: pixel;
Read the left foot foot palm surface information having stored user i left foot or right crus of diaphragm, its effective coverage is long is li, and wide is wi;
Comparing the length of two data and wide respectively, getting large person wherein as needing the long lc in region of contrast and wide wc; That is, if lu>li, lc=lu, otherwise, lc=li; If wu>wi, wc=wu, on the contrary wc=wi;
In effective coverage, calculate Fu and Fi pixel consistance, account form is:
；
3), decision process is as follows:
All Pi, the i=0 that are calculating, 1,2 ..., in n, find maximum Pi value Pmax, its respective user is ID (max),
If Pmax does not exceed threshold value PTH, illustrate and not find with current-user data coupling in the user used preserved, then automatically for active user creates a new user ID (n+1);
If Pmax exceedes threshold value PTH, the user that have found and mate with current-user data is described, then current-user data is filed in user ID (max) in all users preserved;
If find the user of coupling, then replace the up-to-date weight data Wmax of user of coupling with the weight data Wu of active user, replace the up-to-date foot palm surface information Fmax of user of coupling with the foot palm surface information Fu of active user.
The process obtaining active user's foot palm surface information is:
The homing position type keyswitch 4 of its overlay area can be subdued and the circuit turn-on of switching circuit board 43 below the moving contact below it being subjected to displacement cause by instep under weight effect;
A corresponding button of homing position type keyswitch 4, the output terminal of the homing position type keyswitch 4 of each row in closing pressure sensor matrices 2 all connects same KeyOut line, then native system possesses M KeyOut line, the input end of the homing position type keyswitch 4 of each row in closing pressure sensor matrices 2 all connects same KeyIn line, then native system possesses N number of KeyIn line, M KeyOut line be respectively KeyOut1, KeyOut2 ..., KeyOutM, N number of KeyIn line be respectively KeyIn1, KeyIn2 ..., KeyInN;
Start foot palm surface sensor scan program:
Arranging any one KeyOut is low level, and all the other KeyOut are set to floating, detect KeyIn respectively; If homing position type keyswitch 4 is pressed arbitrarily, then the KeyIn of this row is low level, otherwise is high level;
After all being scanned by all homing position type keyswitches 4, can know which homing position type keyswitch 4 conducting, the non-conducting of which homing position type keyswitch 4, the corresponding numerical value of low level is 1, and the corresponding numerical value of high level is 0; We just can obtain the numerical result of a two dimensional image like this.
Concrete, for 4 × 4 keyboard scans, start foot palm surface sensor scan program:
1) KeyOut1 is set to low level, and KeyOut2, KeyOut3, KeyOut4 are set to floating, detects KeyIn1 respectively, KeyIn2, KeyIn3, KeyIn4; If button 1 is pressed, then KeyIn1 is low level, otherwise is high level; In like manner, if button 2 is pressed, then KeyIn2 is low level, otherwise is high level;
2) 1 is completed) after, KeyOut2 is set to low level, and KeyOut1, KeyOut3, KeyOut4 are set to floating, detect KeyIn1 respectively, KeyIn2, KeyIn3, KeyIn4; If button 5 is pressed, then KeyIn1 is low level, otherwise is high level; In like manner, if button 6 is pressed, then KeyIn2 is low level, otherwise is high level;
3) 2 are completed) after, KeyOut3 is set to low level, and KeyOut1, KeyOut2, KeyOut4 are set to floating, detect KeyIn1 respectively, KeyIn2, KeyIn3, KeyIn4; If button 9 is pressed, then KeyIn1 is low level, otherwise is high level; In like manner, if button 10 is pressed, then KeyIn2 is low level, otherwise is high level;
4) 3 are completed) after, KeyOut4 is set to low level, and KeyOut1, KeyOut2, KeyOut3 are set to floating, detect KeyIn1 respectively, KeyIn2, KeyIn3, KeyIn4; If button 13 is pressed, then KeyIn1 is low level, otherwise is high level; In like manner, if button 14 is pressed, then KeyIn2 is low level, otherwise is high level;
5) after the scanning process of above 4 steps, which button conducting (low level, corresponding numerical value is 1) can be known, the non-conducting of which button (high level, corresponding numerical value is 0); We just can obtain the numerical result of a two-dimentional similar image like this.
As mentioned above, then well the present invention can be realized.
Claims (6)
1. array scanning smart identity identification scale, comprise an individual weight scale body, scale body comprises load-bearing substrate (5) overlapping successively from top to bottom, check weighing pressure transducer (6), base plate (7), it is characterized in that: load-bearing substrate (5) is provided with top panel (3), switching circuit board is provided with between top panel (3) and load-bearing substrate (5), switching circuit board is provided with homing position type keyswitch (4), homing position type keyswitch (4) runs through top panel (3) away from one end of switching circuit board and extends to top panel (3) top, and homing position type keyswitch (4) carries out matrix according to N capable M row is arranged on top panel (3), all homing position type keyswitches (4) form a closing pressure sensor matrices (2), the number of N and M is all be more than or equal to 40, check weighing pressure transducer (6) is all connected with automatic recognition system (1) with output terminal with the input end of switching circuit board.
2. array scanning smart identity identification scale according to claim 1, it is characterized in that: described homing position type keyswitch (4) is pot cover switch, pot cover switch comprises the guidepost (41) running through top panel (3), one end of guidepost (41) switch-oriented circuit board (43) is connected with metal clips conducting film (42), metal clips conducting film (42) is arranged on switching circuit board (43), metal clips conducting film (42) is the pot cover shape metal clips that a protrusion direction points to top panel (3), each metal clips conducting film (42) below is provided with 2 pot cover switch static contacts (44), when guidepost (41) moves down, recessed after guidepost (41) compressing metal clips conducting film (42) distortion, the round central area of metal clips conducting film (42) touches pot cover switch static contact (44), conducting loop is formed between 2 pot cover switch static contacts (44), in 2 pot cover switch static contacts (44), one is output terminal, one is input end, one of them pot cover switch static contact (44) connecting power line and automatic recognition system (1), another pot cover switch static contact (44) is connected to automatic recognition system (1), 2 pot cover switch static contacts (44) and a metal clips conducting film (42) form a pot cover switch.
3. array scanning smart identity identification scale according to claim 1, it is characterized in that: automatic recognition system (1) comprises single-chip microcomputer (13), line scanning channel selecting chip (12), column scan channel selecting chip (11), the input end of the homing position type keyswitch (4) of the every a line in closing pressure sensor matrices (2) all passes through line scanning channel selecting chip (12) and is connected with single-chip microcomputer, the output terminal of the homing position type keyswitch (4) of each row in closing pressure sensor matrices (2) all passes through column scan channel selecting chip (11) and is connected with single-chip microcomputer, single-chip microcomputer is also connected with storer.
4. array scanning smart identity identification scale according to claim 1, is characterized in that: top panel (3) is flexible material.
5., based on the automatic identification identity method of any one array scanning smart identity identification scale in Claims 1-4, comprise the following steps:
1), user steps on family expenses scale, active user's body weight value is obtained according to check weighing pressure transducer (6), when user steps down on scale time, reason due to user's compression weight causes homing position type keyswitch (4) conducting under foot palm surface, and the homing position type keyswitch (4) outside foot palm surface disconnects; Now, single-chip microcomputer, by column scan channel selecting chip (11) and line scanning channel selecting chip (12) scanning switch pressure transducer matrix (2), just can obtain active user's foot palm surface information;
2) active user's foot palm surface information Fu and the matching degree Pi preserving user's foot palm surface information, is calculated:
；
Wherein, Wu is active user's body weight value, and Fu is active user's foot palm surface information, and active user's foot palm surface information is two-dimensional array, and numerical value is that 1 to represent correspondence position be sole inner region, and numerical value is that 0 to represent correspondence position be sole exterior domain; Set and preserve user as i=1,2,3,4 ..., n, i-th nearest weight data having preserved user is Wi, and nearest foot palm surface information is Fi;
Defined function f (x) is: x>0, f (x)=0; Otherwise, x≤0, f (x)=1;
Defined function T (x, y) is template matching algorithm, and its computation process is as follows:
Intercept active user's foot palm surface information Fu, intercept the foot palm surface effective coverage of left foot or right crus of diaphragm, definition effective coverage is long is lu, and wide is wu, the unit that effective coverage is long and wide: pixel;
Read the left foot foot palm surface information having stored user i left foot or right crus of diaphragm, its effective coverage is long is li, and wide is wi;
Comparing the length of two data and wide respectively, getting large person wherein as needing the long lc in region of contrast and wide wc; That is, if lu>li, lc=lu, otherwise, lc=li; If wu>wi, wc=wu, on the contrary wc=wi;
In effective coverage, calculate Fu and Fi pixel consistance, account form is:
；
3), decision process is as follows:
All Pi, the i=0 that are calculating, 1,2 ..., in n, find maximum Pi value Pmax, its respective user is ID (max),
If Pmax does not exceed threshold value PTH, illustrate and not find with current-user data coupling in the user used preserved, then automatically for active user creates a new user ID (n+1);
If Pmax exceedes threshold value PTH, the user that have found and mate with current-user data is described, then current-user data is filed in user ID (max) in all users preserved;
If find the user of coupling, then replace the up-to-date weight data Wmax of user of coupling with the weight data Wu of active user, replace the up-to-date foot palm surface information Fmax of user of coupling with the foot palm surface information Fu of active user.
6. automatic identification identity method according to claim 5, is characterized in that: the process obtaining active user's foot palm surface information is:
The homing position type keyswitch (4) of its overlay area can be subdued and make the moving contact below it be subjected to displacement the circuit turn-on of the switching circuit board below causing (43) by instep under weight effect;
A corresponding button of homing position type keyswitch (4), the output terminal of the homing position type keyswitch (4) of each row in closing pressure sensor matrices (2) all connects same KeyOut line, then native system possesses M KeyOut line, the input end of the homing position type keyswitch (4) of each row in closing pressure sensor matrices (2) all connects same KeyIn line, then native system possesses N number of KeyIn line, M KeyOut line be respectively KeyOut1, KeyOut2 ..., KeyOutM, N number of KeyIn line be respectively KeyIn1, KeyIn2 ..., KeyInN;
Start foot palm surface sensor scan program:
Arranging any one KeyOut is low level, and all the other KeyOut are set to floating, detect KeyIn respectively; If homing position type keyswitch (4) is pressed arbitrarily, then the KeyIn of this row is low level, otherwise is high level;
After all being scanned by all homing position type keyswitches (4), can know which homing position type keyswitch (4) conducting, which homing position type keyswitch (4) non-conducting, the corresponding numerical value of low level is 1, and the corresponding numerical value of high level is 0; We just can obtain the numerical result of a two dimensional image like this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510023874.3A CN104535156B (en) | 2015-01-19 | 2015-01-19 | Array scanning smart identity identification scale and automatic identification identity method thereof |
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| CN105224845A (en) * | 2015-09-01 | 2016-01-06 | 京东方科技集团股份有限公司 | Identity recognition device and manufacture method, personal identification method |
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| CN109357734A (en) * | 2018-10-22 | 2019-02-19 | 济源市超光传感器系统工程有限公司 | A kind of width scale high sensitivity weighing sensing device |
| CN110809348A (en) * | 2019-08-19 | 2020-02-18 | 浙江工业大学 | Light control method for mobile stage |
| CN111238620A (en) * | 2020-01-08 | 2020-06-05 | 缤刻普达（北京）科技有限责任公司 | Human body data detection recording method and system, intelligent weighing scale and mobile terminal |
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