CN1208741C - Antenna arrangement of electromagnetic inducing system and coordinate positioning method thereof - Google Patents
Antenna arrangement of electromagnetic inducing system and coordinate positioning method thereof Download PDFInfo
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- CN1208741C CN1208741C CN 02119706 CN02119706A CN1208741C CN 1208741 C CN1208741 C CN 1208741C CN 02119706 CN02119706 CN 02119706 CN 02119706 A CN02119706 A CN 02119706A CN 1208741 C CN1208741 C CN 1208741C
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Abstract
The present invention relates to a four-four division antenna layout and a five-section type coordinate positioning method of an electromagnetic induction system. In the four-four division antenna layout of the present invention, antenna circuits are separated to form an X-direction group and a Y-direction group, the antenna circuits with the same direction and equal spacing displacement are in the same group, the antenna circuits in each direction group comprise a plurality of antenna loops, and the formation of each antenna loop contains a method of dense multiple repeated winding of itself. In addition, a five-section type scanning procedure of the electromagnetic induction system at least contains the following steps: firstly, a first program is carried out to confirm whether the intensity of the voltage amplitude of any signal is larger than the lower limit value of the quasi-position of signal identification; subsequently, a second program is carried out to confirm whether the signal of the previous scan exists and confirm an antenna loop which approaches to an emission source most; then, a third program is carried out to obtain the coordinate value; finally, an interior microprocessor of the electromagnetic induction system can calculate a group of absolute coordinates according to the coordinate value of the amplitude.
Description
Invention field
The present invention relates to a kind of EM induction system, particularly relate to a kind of antenna arrangement device and coordinate localization method thereof of EM induction system.
Technical background
Because the handwriting identification circuit arrangement can replace mouse, and be more suitable in allowing the user, so the improvement of handwriting identification circuit arrangement is the rapid field of development in recent years with artificial input mode input characters and pattern than mouse.Handwriting identification circuit arrangement the earliest can be considered mouse is replaced with pen, and in order to promote user's operation ease, and normally the two replaces mouse with time writer and digiboard (tablet), and usually with the left button of the corresponding mouse of nib of time writer.Year more than though traditional pen type input product has been gone, yet like product all only biases toward in the application of simple functions such as drawing or input in Chinese.
Traditional EM induction system has the transducer/cursor device of the pattern of a digiboard and a mouse or pen.As everyone knows, determine a described point equipment that two kinds operating mode is arranged in the lip-deep position of electromagnetism digiboard.A kind of is relative pattern, and another kind is an absolute mode.General mouse device is with relative mode operating.When mouse slided on the digiboard system surfaces, computer system received the input from mouse.Can only this mouse of identification relatively moving in X and Y direction.A kind of general technology is to utilize an induction installation forming a pair of orthogonal figure signal in this mouse, and this is to signal moving corresponding to the vertical and horizontal of this mouse.Similarly, the cursor device in the digiboard system, for example time writer generally operates under absolute mode.If mention this cursor device, and when moving to the lip-deep another location of its digiboard of supporting, for this computer system, its signal will change, so that reflect the new absolute position of this cursor device.Now, several different methods is with deciding this cursor device in the lip-deep position of the digiboard of its support, and the technology that wherein is widely used in absolute mode is a kind of technology of electromagnetic induction.
Early stage transducer/cursor device is connected to digiboard by multiconductor cable, and through cable thus, and the information of position and button/pressure is sent in the computer system.Electromagnetic transduction/cursor device in some conventional art was once transmitted the non-orientation state of transducer/cursor device function by frequency of utilization and/or phase change.Usually these functions have: the pressure of the button of pressing, pen, or similar function etc.Yet if there is not scrupulous processing, the change of frequency and phase place is easy to because multiple external factor as metal, noise, electromagnetic wave or the like, thereby reads signal with leading to errors.Particularly on bigger digiboard, it is more and more obvious that these problems can become.The technology of the digiboard system of tradition improvement allows the user to use described point equipment under double mode running, under user's control, can provide to relatively move or the information of absolute position.
Existing pen type input product normally is a kind of electromagnetic induction circuit arrangement.With reference to shown in Figure 1, this figure is the circuit block diagram of an existing electromagnetic induction device.Electromagnetic induction device comprises: a time writer and a digiboard (digital tablet).Have a concussion circuit of being formed by inductance capacitance (LC) in the time writer, when touching nib, will produce the variation of inductance value, thereby make electroshock swing frequency also to change thereupon.The pressure of collision nib is big more, and then the variation of inductance value is big more, thereby the variable quantity of concussion frequency is big more, so imposed on the size of pen point pressure as can be known by the size of frequency variation.Two switch keys are also arranged on the side of time writer, leave and produce changes in capacitance in the inductance capacitance oscillator, thereby change the transmission frequency of pen, change to predict the switch key that the user presses by the difference of frequency by the joint of button.In addition, digiboard (tablet) has also comprised elements such as detecting device (detector), amplifier (Amplifier), analog-digital converter.The middle section of the handwriting pad of this quasi-tradition is a loop inductance, has with the equidistant unidirectional antenna of arranging of array way the two-sided of loop inductance.The main application in this unidirectional antenna loop only is to receive the electromagnetic wave signal that the special electromagnetic pen is launched.When the time writer launching electromagnetic wave, unidirectional antenna will receive this electromagnetic wave, and utilizes the mode of electromagnetic induction to obtain relevant information via digiboard.General its resulting coordinate accuracy rate is not good usually with the traditional antenna arrangement and the mode of input, thereby reduces the usefulness and the return rate of central processing unit.So far, be still one of this most important developing goal in field for how improving the coordinate accuracy rate.
Summary of the invention
The present invention is in order to strengthen and the coordinate accuracy rate and the usefulness thereof that increase the traditional electrical magnetic-inductive device, a kind of antenna arrangement and coordinate localization method thereof of EM induction system are provided, and this method can increase and improve the coordinate accuracy rate and the usefulness thereof of traditional electrical magnetic-inductive device.
A purpose of the present invention provides a kind of coordinate finder of EM induction system.The present invention adopts the accuracy of a five-part form coordinate localization method with raising coordinate location, and makes its coordinate return rate quicker.
Another object of the present invention provides a kind of five-part form coordinate localization method of EM induction system.The present invention by a coordinate calculation procedure so that the calculating of coordinate position can be more accurate.In view of the above, the present invention can reduce the processing time of microcontroller (CPU), and the linear bad problem can avoid handwriting input the time, to strengthen the usefulness of EM induction system.
A further object of the present invention provides a kind of antenna arrangement device of EM induction system.The present invention adopts one four four fraction antenna arrangements, to reduce the density of antenna arrangement.Therefore, the present invention can reduce printed circuit board (PCB) (Printed Circuit Board; PCB) area, and reduce and produce man-hour, reach the purpose of reduction product size.In view of the above, the present invention can meet benefit economically.
According to above-described purpose, the present invention has disclosed a kind of four or four fraction antenna arrangements and five-part form coordinate localization method of EM induction system.Four or four fraction antenna arrangements of the present invention be with the induction antenna of EM induction system in regular turn equidistantly cloth list in the two sides of circuit board, and form an antenna loop, so that when electromagnetic field changes, can obtain comparatively clearly signal in the mode of two-dimensional array.This antenna loop can be divided into directions X and Y direction two groups, and same group is all in the same way and has the antenna loop of equidistant property displacement.In order to dispose antenna loop and the density that reduces antenna arrangement equably, antenna loop in each direction group comprises a plurality of antenna loops, for example, form an antenna loop with 4 strip antenna loops, promptly a signal emitting-source place the antenna loop main region directly over the time, then only have 3 strip antenna loops emissive source wrapped in the circle.And the formation of each strip antenna loop comprises self intensive method that repeatedly repeats pitch of the laps.Therefore, when electromagnetic field changed, the more antenna of the number of turns can produce stronger induced signal relatively.
Whether in addition, the five-part form scanning step of EM induction system comprises the following step at least: at first, carrying out one first program is " universe scanning ", so that confirm to have the voltage of signals oscillator intensity greater than the accurate position of signal identification lower limit; Then, carrying out one second program is " middle domain validation scanning ", whether still exist so that confirm the signal of last time scanning, and affirmation and the immediate antenna loop of emissive source; Afterwards, carry out one the 3rd program for " local affirmation scanning ", so that obtain coordinate values; At last, the internal microprocessor of EM induction system can calculate one group of absolute coordinates according to the coordinate values of amplitude.
Description of drawings
Fig. 1 is the circuit box synoptic diagram of traditional existing electromagnetic induction device;
Fig. 2 A is in according to a preferred embodiment of the present invention, the simple circuit block schematic diagram of EM induction system;
Fig. 2 B is in according to a preferred embodiment of the present invention, the directions X antenna arrangement synoptic diagram of EM induction system;
Fig. 2 C is in according to a preferred embodiment of the present invention, the Y directional aerial schematic layout pattern of EM induction system;
Fig. 2 D is in according to a preferred embodiment of the present invention, the structural representation of the formed antenna loop of the antenna arrangement of EM induction system;
Fig. 2 E is in according to a preferred embodiment of the present invention, the process flow diagram of the coordinate localization method of EM induction system;
Fig. 2 F is in according to a preferred embodiment of the present invention, the middle domain validation scanning step of the coordinate localization method of EM induction system;
Fig. 2 G is in according to a preferred embodiment of the present invention, the Building X target positioning flow figure of the coordinate localization method of EM induction system;
Fig. 2 H is in according to a preferred embodiment of the present invention, the Building Y target positioning flow figure of the coordinate localization method of EM induction system.
Symbol description among the figure
200 EM induction system
205 antenna secondary circuits
210 internal circuits
215 little processing secondary circuits
220 antenna groups
220A directions X antenna groups
220B Y directional aerial group
225 working storages
X
Max, X
2nd, X
3rdWorking storage
X
Top, X1, X2, X3, X4, X5 working storage
230A directions X antenna loop
230B Y directional aerial loop
235A directions X antenna loop
235B Y directional aerial loop
240 first universe scanning step
245 first contrast programs
Domain validation scanning step in 250
255 second contrast programs
260 first local affirmation scanning step
265 second universe scanning step
270 the 3rd contrast programs
Y
Top, Y1, Y2, Y3, Y4, Y5 working storage
Y
Max, Y
2nd, Y
3rdWorking storage
275 second local affirmation scanning step
X
P-2, X
P-1, X
p, X
P+1, X
P+2The antenna loop of directions X
Y
P-2, Y
P-1, Y
p, Y
P+1, Y
P+2The antenna loop of Y direction
The position program is demarcated in 280 Building X
280A the 4th contrast program
The 280B first logic determines program
The 280C second logic determines program
280D judges that emissive source is positioned at the marginarium of antenna groups
The 280E first data storage program
280F first operation program
The position program is demarcated in 285 Building Y
285A the 6th contrast program A
285B the 3rd logic determines program
285C the 4th logic determines program
285D decision signal emissive source is positioned on the antenna groups marginarium
The 285E second data storage program
285F the 3rd operation program
285G the 4th operation program
Embodiment
Antenna arrangement device and coordinate localization method thereof that the present invention is a kind of EM induction system in this direction of inquiring into.In order to understand the present invention up hill and dale, detailed invention step or structural detail will be proposed in following description.Apparently, execution of the present invention is not defined in the known specific details of operator of Circuits System.On the other hand, well-known step or element are not described in the details, to avoid causing the unnecessary restriction to the present invention.The present invention can also be widely used among other the embodiment except preferred embodiment, and protection scope of the present invention should be as the criterion with the scope of instructions and claims.
Shown in figure 2A, in one embodiment of this invention, one EM induction system 200 at first is provided, EM induction system 200 comprises at least: an antenna secondary circuit 205, an internal circuit 210 and a little processing secondary circuit 215, wherein, internal circuit 210 more comprises a filtering secondary circuit, an amplification secondary circuit, a rectification secondary circuit and digital-to-analog conversion secondary circuit.Little processing secondary circuit 215 comprises a plurality of working storages 225 at least, and little processing secondary circuit 215 inside can be set and store a voltage reference value, this is the accurate position of signal identification lower limit, and wherein, whether the accurate position of signal identification lower limit is noise in order to the signal that difference is received.In addition, the setting of the accurate position of signal identification lower limit is near EM induction system 200 during no any obvious electric wave emissive source, EM induction system 200 receives via self antenna and internal circuit 210 handle after the maximum voltage value of resulting noise, therefore, the accurate position of signal identification lower limit is greater than general noise magnitude of voltage.In view of the above, whether the magnitude of voltage that 215 of the little processing secondary circuits in the EM induction system 200 need quantitative check to receive discerns accurate position lower limit greater than signal, if the magnitude of voltage that receives is greater than the accurate position of signal identification lower limit, promptly decidable has a signal emitting-source near EM induction system 200.Generally speaking, electromagnetic induction has the intensity of electromagnetic signal and the characteristic that its square distance is inversely proportional to.For receiving end, when emissive source during away from receiving antenna, the oscillator intensity of the voltage of its signal can be less than the oscillator intensity of the voltage of noise; Relatively, for receiving end, when emissive source during near receiving antenna, the oscillator intensity of the voltage of its signal can be greater than the oscillator intensity of the voltage of noise.
Shown in figure 2B and Fig. 2 C, in the present embodiment, the antenna secondary circuit 205 of EM induction system 200 of the present invention comprises one four four fraction antenna arrangements at least, wherein, the antenna allocation method of four or four fraction antenna arrangements more comprises a two-dimensional array formula collocation method, its coordinate position can adopt flute card two dimension coordinate (two-dimensional Cartesian coordinates), for example, four or four fraction antenna arrangements can equidistantly be arranged in the two sides of circuit board with two-dimensional array formula collocation method with a plurality of antenna groups 220 with different directions, so that can respond to more clearly signal when electromagnetic field changes.In addition, a plurality of antennas of antenna secondary circuit 205 more comprise a back ring type inductive coil, and the material of back ring type inductive coil more comprises a Copper Foil lead.According to flute card two dimension coordinate, a plurality of antenna groups 220 with different directions comprise a directions X antenna groups 220A and a Y directional aerial 220B of group, wherein, antenna loop 230A in equidirectional antenna groups 220A and the 220B and 230B are all in the same way and have a displacement of equidistant property.Moreover directions X antenna groups 220A and the Y directional aerial 220B of group comprise N/4 group directions X antenna loop 230A and M/4 group Y directional aerial loop 230B respectively.In addition, every group of directions X antenna loop 230A and Y directional aerial loop 230B all comprise four strip antenna loop 235A and 235B, so that can evenly arrange the two sides of antenna loop in circuit board.Therefore, the antenna loop 235A of N/4 group directions X antenna loop 230A adds up to N, and the antenna loop 235B of M/4 group Y directional aerial loop 230B adds up to M.With equidirectional antenna loop 235A or 235B, if a signal emitting-source place an antenna loop 235A or 235B main region directly over the time, then have three strip antenna loop 235A or 235B that emissive source is wrapped in it approximately.On the other hand, every strip antenna loop 235A and 235B more comprise a multiple back ring type induction antenna, its method is that same antenna loop is formed an induction antenna in the intensive mode that repeatedly repeats pitch of the laps, for example, four back ring type induction antennas, because when electromagnetic field changed, the more antenna of the number of turns can produce stronger induced signal relatively, shown in Fig. 2 D.
Shown in figure 2E, in the present embodiment, according to flute card two dimension coordinate, the coordinate localization method that EM induction system 200 of the present invention is carried out comprises a five-part form coordinate localization method at least, and five-part form coordinate localization method is as described below.At first, carry out one first universe scanning step 240, the program that it carries out comprehensive scanning at directions X antenna groups 220A is so that confirm to have the address of discerning the antenna loop of accurate position lower limit greater than signal.The method of the first universe scanning step 240 is by the scanning of all N strip antenna loop 235A that carry out directions X antenna groups 220A according to the mode of time-division preface, wherein, only open a strip antenna loop according to the mode of time-division preface at one time, and remaining antenna loop is to close or form the state that opens circuit.At first, only open article one antenna loop, and the signal that article one antenna loop is obtained is tried to achieve the maximum voltage amplitude of the signal of article one antenna loop via internal circuit 210, and be sent to and carry out one first contrast program 245 in little processing secondary circuit 215, with the maximum voltage amplitude of the signal of article one antenna loop relatively and the size of the accurate lower limit of signal identification.Then, open each strip antenna loop in regular turn, and carry out the first above-mentioned universe scanning step 240 and the first contrast program 245 repeatedly, open once up to all N strip antenna loop 235A of directions X antenna groups 220A, and obtain N voltage of signals amplitude.N voltage of signals amplitude all with the accurate position of signal identification lower limit relatively after, will have the number value X of maximum voltage amplitude greater than the antenna loop of the accurate position of signal identification lower limit
pBe recorded in a working storage X
TopIn.If when not having the signal amplitude value of arbitrary antenna loop to discern accurate position lower limit greater than signal, then carry out the first universe scanning step 240 and the first contrast program 245 more repeatedly, up to occur the maximum voltage amplitude greater than one of the accurate position of signal identification lower limit signal till.
Shown in figure 2E and Fig. 2 F, in the present embodiment, carry out domain validation scanning step 250 in, to confirm whether the signal with maximum voltage oscillator intensity that last time scanned directions X antenna groups 220A still exists, and find out emissive source and which strip antenna loop is the most approaching, be the noise surging that moment occurs in the environment with the signal of avoiding having the maximum voltage oscillator intensity.The direction of middle domain validation scanning step 250 is as described below: at first, little processing secondary circuit 215 takes out and is recorded in working storage X
TopAntenna loop numbering X
p, and with this antenna loop X
pDomain validation scanning benchmark in being set at; Then, with antenna loop X
pBe the center, scan in regular turn again and comprise antenna loop X in the directions X antenna groups 220A
pAt interior half antenna loop, i.e. N/2 strip antenna; Then, behind N/2 signal amplitude of the N/2 strip antenna loop of obtaining directions X antenna groups 220A, be resent to little processing secondary circuit 215 and carry out one second contrast program 255, with the maximum voltage amplitude of N/2 signal of comparison and the size of the accurate position of signal identification lower limit; If when having the voltage of signals amplitude of another antenna loop to discern accurate position lower limit, then upgrade working storage X greater than signal
TopThe number value of antenna loop; Relatively, if the signal amplitude value of no arbitrary antenna loop during greater than the accurate position of signal identification lower limit, then carry out again again the first universe scanning step 240 and the first contrast program 245 up to occur the maximum voltage amplitude greater than one of signal identification standard lower limit signal till.In addition, if P+ (N/4) greater than N or P-(N/4) less than 1 o'clock, then in the scope of domain validation scanning step 250 exceed with the border with antenna arrangement, scanning comprises antenna loop X
pAt interior N/2 strip antenna loop.
Subsequently, carry out the antenna loop X of one first local affirmation scanning step 260 to have the maximum signal amplitude value among the scanning directions X antenna groups 220A
pRegional area, and obtain the coordinate values of directions X.At first, taking-up is stored in working storage X
TopIn the antenna loop number value X with maximum voltage amplitude
p, and the physical characteristics that is inversely proportional to of basis signal intensity and square distance, the decidable signal emitting-source is near antenna loop X
p, promptly signal emitting-source is positioned at antenna loop X
pDirectly in the scope; Then, carry out the one scan step more in regular turn, its scope comprises antenna loop X
pAt 5 interior strip antenna loops, that is scanning antenna loop X one by one
P-2, X
P-1, X
p, X
P+1, X
P+2, and deposit in respectively among a plurality of working storage X1, X2, X3, X4 and the X5 obtaining five signal amplitude values Deng five strip antenna loops.Then, carry out one second universe scanning step 265, it carries out omnibearing scanning step at the Y directional aerial 220B of group, to confirm the immediate antenna loop of emissive source, wherein, the modus operandi of the second universe scanning step 265 is as described in the first universe scanning step 240, also need to carry out scanning step according to the method for time-division preface, to obtain M the signal amplitude value of M strip antenna loop 235B, and carry out one the 3rd contrast program 270, and obtain antenna loop position with maximum signal amplitude value with M signal amplitude value of contrast size each other.Therefore, it is that M the signal amplitude value that is M strip antenna loop 235B do not need to compare with the accurate position of signal identification lower limit that the second universe scanning step 265 is different from the first universe scanning step, 240 parts, but compares with M the signal amplitude value of the Y directional aerial 220B of group.After M signal amplitude value of the M strip antenna loop of the Y directional aerial 220B of group all obtained, can find out antenna loop Y with maximum signal amplitude value
p, and be stored in a working storage X of little processing secondary circuit 215
TopIn.
Secondly, carry out the antenna loop Y of one second local affirmation scanning step 275 to have the maximum signal amplitude value among the scanning Y directional aerial 220B of group
pRegional area, and obtain the coordinate values of Y direction.At first, taking-up is stored in working storage Y
TopIn have the antenna loop number value Y of maximum signal amplitude
p, and the physical characteristics that is inversely proportional to of basis signal intensity and square distance, the decidable signal emitting-source is near antenna loop Y
p, that is signal emitting-source is positioned at antenna loop Y
pDirectly in the scope; Then, carry out another scanning step once more in regular turn, its scope comprises antenna loop Y
pAt 5 interior strip antenna loops, that is scanning antenna loop Y one by one
P-2, Y
P-1, Y
p, Y
P+1, Y
P+2Deng five strip antenna loops, obtaining five signal amplitude values, and deposit in respectively among a plurality of working storage Y1, Y2, Y3, Y4, the Y5.
Shown in figure 2F, in the present embodiment, after finishing said procedure, can carry out a Building X respectively with (Y1, Y2, Y3, Y4, Y5) according to the obtained amplitude of all directions (X1, X2, X3, X4, X5) and demarcate a position program 280 and demarcation position, a Building Y program 285, to calculate one group of absolute coordinates.Therefore, obtain the peak swing value via the first local affirmation scanning step 260 and the second local affirmation scanning step 275, and the characteristic that basis signal intensity and distance are inversely proportional to, the adjacent two antenna loops that decidable has the antenna loop of amplitude maximum should have the second largest value and the third-largest value of amplitude.In view of the above, the enforcement method of demarcation position, Building X program 280 is as described below: at first, carry out one the 4th contrast program 280A,, and store amplitude maximum X in a working storage with stored a plurality of amplitudes size each other in comparison working storage X1, X2, X3, X4, the X5
MaxIn, and store the antenna loop with amplitude maximum and number in working storage X
TopIn.Then, carry out one first logic determines program 280B why with the maximal value of the voltage amplitude of judging working storage X1, X2, X3, X4, X5.Whether when the maximal value of voltage amplitude is judged as the data of working storage X1 or X5, then carrying out one second logic determines program 280C is article one antenna loop or the N strip antenna loop of directions X antenna groups 220A with the address of differentiating working storage X1 or the pairing antenna loop of X5; If yes, then directly the decision signal emissive source be to be positioned at 280D in the district of directions X antenna groups 220A both sides of the edge; If domain validation scanning step 250 in, then need not getting back to once more.Judge be not the data of working storage X1 or X5 when the maximal value of voltage amplitude, then carry out one first data storage program 280E so that the second largest value of stored voltage amplitude and the third-largest value the respectively in working storage X
2ndWith X
3rdIn; For example, the antenna loop X that has amplitude maximum
pAdjacent two antenna loop X
P-1With X
P+1Amplitude be stored in a plurality of working storage X respectively
2ndWith X
3rdIn, wherein, antenna loop X
pAmplitude maximum be stored in a working storage X
MaxIn, and antenna loop X
pNumbering be stored in X
TopIn.
Then, can carry out one first operation program 280F by little processing secondary circuit 215, its compute mode is as described below: at first, and by the maximal value X of voltage amplitude
MaxDeduct the second largest value X of voltage amplitude respectively
2ndWith the third-largest value X
3rd, to obtain one first voltage amplitude gap value (X
Max-X
2nd) and one second voltage amplitude gap value (X
Max-X
3rd); Then, with the first voltage amplitude gap value (X
Max-X
2nd) and the second voltage amplitude gap value (X
Max-X
3rd) and as denominator, and the first voltage amplitude gap value (X
Max-X
2nd) draw the three strip antenna loop X adjacent one another are with maximum voltage amplitude for molecule
P-1, X
pWith X
P+1The voltage amplitude slope value; Then, the voltage amplitude slope value is multiplied by a base resolve constant value Kr to obtain the relational coordinate value Xr of a directions X, wherein, base resolve constant value Kr is defined as single strip antenna loop resolution each other, its expectation resolution that is defined as one inch is counted divided by the number of antennas within an inch, that is the coordinate in every fixed range counts, and base resolve constant value Kr sets usually and is stored in little processing secondary circuit 215; In view of the above, arithmetic expression of the present invention is as described below:
In addition, relational coordinate value Xr is the three strip antenna loop X that utilize partial sweep adjacent one another are
P-1, X
pWith X
P+1The relational coordinate that is calculated.Therefore relational coordinate value Xr must be converted into real absolute coordinates Xa.At last, carry out one second operation program 280G, its compute mode is to add three strip antenna loop X by relational coordinate value Xr
P-1, X
pWith X
P+1The base seat scale value X of the initial point of the distance X directional aerial 220A of group
Base, being only the real initial point with directions X antenna groups 220A is the true coordinate values Xa at zero point, therefore, relational coordinate value Xr adds base seat scale value X
BaseAnd be true coordinate values or absolute coordinates Xa, the equation of the second operation program 280G is as follows:
Xa=Xr+X
Base, and X
Base=(X
Top-1) * Kr
As mentioned above, embodiment according to coordinate calculation procedure of the present invention is as follows: if (X1, X2, X3, X4, X5)=(30,60,85,70,45), and antenna number=(6,7,8,9,10) that (X1, X2, X3, X4, X5) is corresponding respectively, and Kr=100; X then
Top=8, X
Max=85, X
2nd=70, X
3rd=60; Therefore,
X
Base=(8-1) * 100=700, with
Xa＝700+37.5＝737.5
Shown in figure 2G, in the present embodiment, the enforcement method of demarcation position, Building Y program 285 is as described below: at first, carry out one the 6th contrast program 285A with stored a plurality of amplitudes size each other in comparison working storage Y1, Y2, Y3, Y4, the Y5, and store amplitude maximum in a working storage Y
MaxIn, and store the antenna loop with amplitude maximum and number in working storage Y
TopIn.Then, carry out one the 3rd logic determines program 285B why with the maximal value of the voltage amplitude of judging working storage Y1, Y2, Y3, Y4, Y5.Whether when the maximal value of voltage amplitude is judged as the data of working storage Y1 or Y5, then carrying out one the 4th logic determines program 285C is article one antenna loop or the M strip antenna loop of the Y directional aerial 220B of group with the address of differentiating working storage Y1 or the pairing antenna loop of Y5; If yes, then directly the decision signal emissive source be to be positioned at 285D in the district of Y directional aerial group 220B both sides of the edge; If, then need not get back to the second universe scanning step 265 once more.Judge be not the data of working storage Y1 or Y5 when the maximal value of voltage amplitude, then carry out one second data storage program 285E so that the second largest value of stored voltage amplitude and the third-largest value the respectively in working storage Y
2ndWith Y
3rdIn; For example, the antenna loop Y that has amplitude maximum
pAdjacent two antenna loop Y
P-1With Y
P+1Amplitude be stored in a plurality of working storage Y respectively
2ndWith Y
3rdIn, wherein, antenna loop Y
pAmplitude maximum be stored in a working storage Y
MaxIn, and antenna loop Y
pNumbering be stored in Y
TopIn.
As mentioned above, can carry out one the 3rd operation program 285F by little processing secondary circuit 215, its compute mode is as described below: at first, and by the maximal value Y of voltage amplitude
MaxDeduct the second largest value Y of voltage amplitude respectively
2ndWith the third-largest value Y
3rd, to obtain a tertiary voltage amplitude disparity value (Y
Max-Y
2nd) and one the 4th voltage amplitude gap value (Y
Max-Y
3rd); Then, with tertiary voltage amplitude disparity value (Y
Max-Y
2nd) and the 4th voltage amplitude gap value (Y
Max-Y
3rd) and as denominator, and tertiary voltage amplitude disparity value (Y
Max-Y
2nd) draw the three strip antenna loop Y adjacent one another are with maximum voltage amplitude for molecule
P-1, Y
pWith Y
P+1The voltage amplitude slope value; Then, the voltage amplitude slope value is multiplied by base resolve constant value Kr to obtain the relational coordinate value Yr of a Y direction; In view of the above, arithmetic expression of the present invention is as described below:
At last, carry out one the 4th operation program 285G, its compute mode is to add three strip antenna loop Y by relational coordinate value Yr
P-1, Y
pWith Y
P+1The base seat scale value Y of the initial point of the distance Y directional aerial 220B of group
Base, being only the real initial point with the Y directional aerial 220B of group is the true coordinate values Ya at zero point, therefore, relational coordinate value Yr adds base seat scale value Y
BaseAnd be true coordinate values or absolute coordinates Ya, the equation of the 4th operation program 285G is as follows:
Ya=Yr+Y
Base, and Y
Base=(Y
Top-1) * Kr
As mentioned above, in an embodiment of the present invention, the present invention can be by a five-part form coordinate localization method improving the accuracy of coordinate location, and make its coordinate return rate quicker.Therefore, the present invention can meet the practicality on the industry.Moreover the present invention adopts one four four fraction antenna arrangements to reduce the density of antenna arrangement.Therefore, the present invention can reduce printed circuit board (PCB) (PrintedCircuit Board; PCB) area, and reduce and produce man-hour, to reach the purpose of reduction product size.In view of the above, the present invention can meet benefit economically.In addition, the present invention is by a coordinate calculation procedure, so that the calculating of coordinate position can be more accurate.In view of the above, the present invention can reduce the processing time of microprocessor, and the linear bad problem can avoid handwriting input the time, to strengthen the usefulness of EM induction system.
Certainly, the present invention also may be used on the coordinate localization method of any EM induction system except on the antenna arrangement that may be applied in EM induction system.And the present invention is by four or four fraction antenna arrangements, so that the calculating of coordinate position is more accurate, develops being used in about the EM induction system aspect with the density that reduces antenna arrangement and a coordinate calculation procedure so far yet.
Apparently, according to the description among the top embodiment, the present invention has many corrections and difference.Therefore need be understood in the scope of its additional claim, except above-mentioned detailed description, the present invention can also implement in other embodiment widely.
Above-mentioned is preferred embodiment of the present invention only, is not in order to limit protection scope of the present invention; All other do not break away from and holds the equivalence of being finished in disclosed and change or modify, and all should be included within the scope of claims.
Claims (59)
1. the coordinate localization method of an EM induction system is characterized in that, the coordinate localization method of this EM induction system comprises step:
(1) provides a plurality of antenna loops;
(2) carry out first scanning step, with these a plurality of antenna loops of scanning, and obtain the antenna address that occurs this maximum voltage amplitude greater than a maximum voltage amplitude and of this a plurality of antenna loops of the accurate position of signal identification lower limit, wherein this first scanning step is an antenna loop of these a plurality of antenna loops of single pass;
(3) carry out second scanning step by this antenna address as the one scan center, be positioned at the antenna loop of this antenna address and adjacent position thereof with scanning, and obtain at least three voltage amplitude amplitudes, wherein this second scanning step is an antenna loop of these a plurality of antenna loops of single pass; With
(4) carry out a coordinate operation program by these at least three voltage amplitude amplitudes, to obtain a coordinate values.
2. the coordinate localization method of EM induction system as claimed in claim 1, it is characterized in that, above-mentioned antenna arrangement comprises a plurality of antenna groups with different coordinate directions, and each antenna groups comprises a plurality of antenna loops, and every day, line loop comprised a plurality of antenna loops.
3. the coordinate localization method of EM induction system as claimed in claim 1 is characterized in that, above-mentioned antenna arrangement also comprises one four four fraction antenna arrangements.
4. the coordinate localization method of EM induction system as claimed in claim 3 is characterized in that, four or four above-mentioned fraction antenna arrangements also comprise a directions X antenna groups and a Y directional aerial group.
5. the coordinate localization method of EM induction system as claimed in claim 4 is characterized in that, an above-mentioned directions X antenna groups and a Y directional aerial group comprise respectively and have in the same way and equidistant a plurality of antenna loops of property displacement.
6. the coordinate localization method of EM induction system as claimed in claim 5 is characterized in that, above-mentioned a plurality of antenna loops also comprise a plurality of antenna loops.
7. the coordinate localization method of EM induction system as claimed in claim 6 is characterized in that, the formation of above-mentioned antenna loop comprise with the same antenna with intensive repeatedly heavily cover the circle and form.
8. the coordinate localization method of EM induction system as claimed in claim 1 is characterized in that, the first above-mentioned scanning step is undertaken by the mode according to the time-division preface.
9. the coordinate localization method of EM induction system as claimed in claim 1 is characterized in that, the first above-mentioned scanning step also comprises:
Open and close these a plurality of antenna loops in regular turn, and try to achieve a plurality of voltage amplitudes of these a plurality of antenna loops respectively;
These a plurality of voltage amplitudes and the accurate position of this signal identification lower limit to these a plurality of antenna loops compare; With
A plurality of voltage amplitudes greater than this accurate position of signal identification lower limit are compared each other, and obtain this maximum voltage amplitude of these a plurality of voltage amplitudes and this antenna address of appearance thereof.
10. the coordinate localization method of EM induction system as claimed in claim 1 is characterized in that, the first above-mentioned scanning step also comprises one and confirms scanning step.
11. the coordinate localization method of EM induction system as claimed in claim 10 is characterized in that, above-mentioned affirmation scanning step comprises:
As the one scan center, scan a plurality of antenna loops of half by this antenna address in regular turn, and obtain a plurality of voltage amplitudes of a plurality of antenna loops of scanning half; With
Carry out the comparison of a plurality of voltage amplitudes of this signal identification accurate position lower limit and half, with this maximum voltage amplitude of obtaining these a plurality of voltage amplitudes and this antenna address of appearance thereof.
12. the coordinate localization method of EM induction system as claimed in claim 1 is characterized in that, it is the marginarium that is positioned at this antenna arrangement with the judgment signal emissive source that above-mentioned coordinate operation program comprises a logic determines program.
13. the coordinate localization method of EM induction system as claimed in claim 1 is characterized in that, above-mentioned coordinate operation program comprises a calculation procedure, and this calculation procedure is the difference of the voltage amplitude of this maximum voltage amplitude of calculating and adjacent antenna loop thereof.
14. the antenna arrangement device of an EM induction system is characterized in that, the antenna arrangement device of this EM induction system comprises:
A plurality of antenna loops;
Form many group antenna loops by these a plurality of antenna loops, wherein this every group of antenna loop has at least four strip antenna loops;
Form a plurality of antenna groups by these many group antenna loops with different directions, wherein, this each have a different directions antenna groups have at least one group of antenna loop respectively; With
Equidistant these a plurality of antenna groups with different directions of arranging are in an antenna secondary circuit of this EM induction system, to form this antenna arrangement of this EM induction system.
15. the antenna arrangement device of EM induction system as claimed in claim 14 is characterized in that, the material of a plurality of above-mentioned antenna loops also comprises a Copper Foil lead.
16. the antenna arrangement device of EM induction system as claimed in claim 14 is characterized in that, each strip antenna loop of a plurality of above-mentioned antenna loops also comprises a multiple back ring type induction antenna.
17. the antenna arrangement device of EM induction system as claimed in claim 16 is characterized in that, above-mentioned multiple back ring type induction antenna forms in the intensive mode of repeatedly heavily covering circle of the same antenna.
18. the antenna arrangement device of EM induction system as claimed in claim 16 is characterized in that, above-mentioned multiple back ring type induction antenna also comprises one or four back ring type induction antennas.
19. the antenna arrangement device of EM induction system as claimed in claim 14 is characterized in that, each above-mentioned group antenna loop can be received the electromagnetic induction signal of a signal emitting-source by at least three these antenna loops.
20. the antenna arrangement device of EM induction system as claimed in claim 14 is characterized in that, the equidirectional antenna groups of above-mentioned each is comprised should many group antenna loops configurations be all in the same way and have a displacement of equidistant property.
21. the antenna arrangement device of EM induction system as claimed in claim 14 is characterized in that, a plurality of layout methods with antenna groups of different directions of above-mentioned this also comprise a two-dimensional array formula collocation method.
22. the antenna arrangement device of EM induction system as claimed in claim 21 is characterized in that, the coordinate mode of above-mentioned two-dimensional array formula collocation method also comprises flute card two dimension coordinate.
23. the five-part form coordinate localization method of an EM induction system is characterized in that, the five-part form coordinate localization method of this EM induction system comprises step:
(1) carries out one first universe scanning step, have the region-wide antenna groups of the first coordinate direction, and obtain the first maximum voltage amplitude of the signal of each strip antenna in regular turn to scan one;
(2) carry out one first contrast program by a little processing secondary circuit, with the size of the accurate position of relatively these a plurality of first maximum voltage amplitudes and signal identification lower limit, and confirm to have one first antenna address greater than the maximum voltage amplitude of this accurate position of signal identification lower limit;
(3) be that one first scanning benchmark carries out domain validation scanning step in by this first antenna address, scanning the half regional antenna groups that this has the first coordinate direction in regular turn, and obtain a plurality of second maximum voltage amplitudes in half zone;
(4) carry out one second contrast program by this little processing secondary circuit, with the size of the accurate position of relatively these a plurality of second maximum voltage amplitudes and this signal identification lower limit, and reaffirm the one second antenna address that has greater than the maximum voltage amplitude of the accurate position of signal identification lower limit;
(5) be that one second scanning benchmark carries out one first and local confirms scanning step by this second antenna address, scanning the regional area antenna groups that this has the first coordinate direction, and obtain a plurality of the 3rd maximum voltage amplitudes;
(6) carry out one second universe scanning step, have the region-wide antenna groups of the second coordinate direction, and obtain the 4th maximum voltage amplitude of the signal of each strip antenna in regular turn to scan one;
(7) carry out one the 3rd contrast program by this little processing secondary circuit, contrasting these a plurality of the 4th maximum voltage amplitudes size each other, and obtain third antenna address with maximum voltage amplitude;
(8) be that one second scanning benchmark carries out one second and local confirms scanning step by this third antenna address, scanning the regional area antenna groups that this has the second coordinate direction, and obtain a plurality of the 5th maximum voltage amplitudes;
(9) carry out one first coordinate finder by this second antenna address and these a plurality of the 3rd maximum voltage amplitudes, to obtain one first coordinate values of the first coordinate direction; With
(10) carry out one second coordinate finder by this third antenna address and these a plurality of the 5th maximum voltage amplitudes, to obtain one second coordinate values of the second coordinate direction.
24. the five-part form coordinate localization method of EM induction system as claimed in claim 23 is characterized in that, the method for the first above-mentioned universe scanning step is to scan this antenna groups with first coordinate direction by the mode according to the time-division preface.
25. the five-part form coordinate localization method of EM induction system as claimed in claim 24 is characterized in that, the above-mentioned mode according to the time-division preface is only to open a strip antenna loop at one time and remaining antenna loop is to close or form the state that opens circuit.
26. the five-part form coordinate localization method of EM induction system as claimed in claim 23 is characterized in that, the sweep limit of the first above-mentioned local affirmation scanning step also comprises four antenna addresses hithermost with it, this second antenna address.
27. the five-part form coordinate localization method of EM induction system as claimed in claim 23 is characterized in that, the method for the second above-mentioned universe scanning step is to scan this antenna groups with second coordinate direction by the mode according to the time-division preface.
28. the five-part form coordinate localization method of EM induction system as claimed in claim 27 is characterized in that, the above-mentioned mode according to the time-division preface is only to open a strip antenna loop at one time and remaining antenna loop is to close or form the state that opens circuit.
29. the five-part form coordinate localization method of EM induction system as claimed in claim 23 is characterized in that, the sweep limit of the second above-mentioned local affirmation scanning step also comprises four antenna addresses hithermost with it, this third antenna address.
30. the five-part form coordinate localization method of EM induction system as claimed in claim 23 is characterized in that, the first above-mentioned coordinate finder also comprises:
Carry out one the 4th contrast program to find out one the 6th maximum voltage amplitude, one four antenna address corresponding by these a plurality of the 3rd maximum voltage amplitudes with it;
Carry out one first logic determines program to judge that the 4th antenna address is the non-frontier district that is positioned at this antenna groups with first coordinate direction by the 4th antenna address and its 6th maximum voltage amplitude;
One the 7th maximum voltage value and one the 8th maximum voltage value by the 6th tight big voltage amplitude amplitude and adjacent the 4th antenna address are carried out one first operation program to obtain one first relational coordinate value of this first coordinate direction; With
Carry out one second operation program to obtain one first absolute coordinates value of this first coordinate direction by this first relational coordinate value.
31. the five-part form coordinate localization method of EM induction system as claimed in claim 30, it is characterized in that, the above-mentioned first logic determining program judges that then signal emitting-source was positioned at the marginarium of this EM induction system when the 4th antenna address was positioned at the frontier district of this antenna groups with first coordinate direction.
32. the five-part form coordinate localization method of EM induction system as claimed in claim 30 is characterized in that, the first above-mentioned operation program also comprises:
Carry out one first subtraction by the 6th tight big voltage amplitude amplitude and the 7th maximum voltage value, to obtain one first voltage amplitude gap value;
Carry out one second subtraction by the 6th maximum voltage amplitude and the 8th maximum voltage value, to obtain one second voltage amplitude gap value;
By this first voltage amplitude gap value and this second voltage amplitude gap value and as denominator, and this first voltage amplitude gap value is that molecule carries out one first division arithmetic, to obtain one first voltage amplitude slope value; With
Carry out one first multiplying to obtain this first relational coordinate value by this first a voltage amplitude slope value and a base resolve constant value.
33. the five-part form coordinate localization method of EM induction system as claimed in claim 32 is characterized in that, above-mentioned base resolve constant value is that the coordinate in every fixed range is counted.
34. the five-part form coordinate localization method of EM induction system as claimed in claim 30 is characterized in that, the first above-mentioned absolute coordinates value is this first relational coordinate value and one first base seat scale value sum.
35. the five-part form coordinate localization method of EM induction system as claimed in claim 34 is characterized in that, the computing method of the first above-mentioned base seat scale value also comprise:
The 4th antenna address is deducted 1, to obtain one first difference; With
Carry out a multiplying in the hope of this first base seat scale value by this first difference and this base resolve constant value.
36. the five-part form coordinate localization method of EM induction system as claimed in claim 23 is characterized in that, the second above-mentioned coordinate finder also comprises:
Carry out one the 5th contrast program to find out one the 9th maximum voltage amplitude, one five antenna address corresponding by these a plurality of the 5th maximum voltage amplitudes with it;
Carry out one second logic determines program to judge that the 5th antenna address is the non-frontier district that is positioned at this antenna groups with second coordinate direction by the 5th antenna address and its 9th maximum voltage amplitude;
1 the tenth maximum voltage value and 1 the 11 maximum voltage value by the 9th maximum voltage amplitude and adjacent the 5th antenna address are carried out one the 3rd operation program to obtain one second relational coordinate value of this second coordinate direction; With
Carry out one the 4th operation program to obtain one second absolute coordinates value of this second coordinate direction by this second relational coordinate value.
37. the five-part form coordinate localization method of EM induction system as claimed in claim 36, it is characterized in that, the second above-mentioned logic determines program judges that the 5th antenna address is when being positioned at the frontier district of this antenna groups with second coordinate direction, and then signal emitting-source is the marginarium that is positioned at this EM induction system.
38. the five-part form coordinate localization method of EM induction system as claimed in claim 36 is characterized in that, the 3rd above-mentioned operation program also comprises:
Carry out one the 3rd subtraction by the 9th maximum voltage amplitude and the tenth maximum voltage value, to obtain a tertiary voltage amplitude disparity value;
Carry out one the 4th subtraction by the 9th maximum voltage amplitude and the 11 maximum voltage value, to obtain one the 4th voltage amplitude gap value;
By this tertiary voltage amplitude disparity value and the 4th voltage amplitude gap value and as denominator, and this tertiary voltage amplitude disparity value is that molecule carries out one second division arithmetic, to obtain one second voltage amplitude slope value; With
Carry out one second multiplying to obtain this second relational coordinate value by this second voltage amplitude slope value and this base resolve constant value.
39. the five-part form coordinate localization method of EM induction system as claimed in claim 36 is characterized in that, the second above-mentioned absolute coordinates value is this second relational coordinate value and one second base seat scale value sum.
40. the five-part form coordinate localization method of EM induction system as claimed in claim 39 is characterized in that, the computing method of the second above-mentioned base seat scale value also comprise:
The 5th antenna address is deducted 1, to obtain one second difference; With
Carry out a multiplying in the hope of this second base seat scale value by this second difference and this base resolve constant value.
41. the five-part form coordinate localization method of an EM induction system is characterized in that, the five-part form coordinate localization method of this EM induction system comprises step:
(1) provide one four four fraction antenna arrangements, and this four or four fraction antenna arrangement has a directions X antenna groups and a Y directional aerial group;
(2) carry out a directions X universe scanning step scanning a plurality of antenna loops of this directions X antenna groups according to the time-division preface, and obtain a plurality of first voltage amplitude amplitudes;
(3) carry out one first contrast program with the size of the accurate position of these a plurality of first voltage amplitude amplitudes and signal identification lower limit relatively respectively by a little processing secondary circuit, and obtain the one first antenna address that has greater than maximum first a voltage amplitude amplitude of this accurate position of signal identification lower limit;
(4) be that scanning center carries out domain validation scanning step in the directions X scanning half these a plurality of antenna loops of this directions X antenna groups in regular turn by this first antenna address, and obtain a plurality of second voltage amplitude amplitudes;
(5) carry out the size of one second contrast program by this little processing secondary circuit, and obtain the one second antenna address that has greater than maximum second a voltage amplitude amplitude of this accurate position of signal identification lower limit with the accurate position of relatively these a plurality of second voltage amplitude amplitudes and this signal identification lower limit;
(6) be that scanning center carries out the local affirmation of directions X scanning step by this second antenna address, scanning the four adjacent strip antennas of both sides of this second antenna address and this second antenna address, and obtain five tertiary voltage amplitudes and corresponding antenna address thereof;
(7) carry out a Y direction universe scanning step scanning a plurality of antenna loops of this Y directional aerial group according to the time-division preface, and obtain a plurality of the 4th voltage amplitude amplitudes;
(8) carry out one the 3rd contrast program contrasting these a plurality of the 4th voltage amplitude amplitudes size each other by this little processing secondary circuit, and obtain third antenna address with maximum the 4th a voltage amplitude amplitude;
(9) be that scanning center carries out the local affirmation of Y direction scanning step by this third antenna address, with four adjacent strip antennas of the both sides of scanning this third antenna address and this third antenna address, and obtain five the 5th voltage amplitude amplitudes and corresponding antenna address thereof;
(10) carry out the four antenna address of one the 4th contrast program by this second antenna address and this five tertiary voltage amplitudes with the maximal value place of the maximal value that obtains these five tertiary voltage amplitudes, second largest value and the third-largest value and these five tertiary voltage amplitudes;
(11) carry out one first operation program by the maximal value of these five tertiary voltage amplitudes, second largest value and the third-largest value, to obtain the relational coordinate value of a directions X;
(12) carry out one second operation program by the 4th antenna address, to obtain the base seat scale value of a directions X;
(13) carry out one the 3rd operation program by the relational coordinate value of this directions X and the base seat scale value of this directions X, to obtain the absolute coordinates value of a directions X;
(14) carry out the five antenna address of one the 5th contrast program by this second antenna address and this five the 5th voltage amplitude amplitudes with the maximal value place of the maximal value that obtains these five the 5th voltage amplitude amplitudes, second largest value and the third-largest value and these five the 5th voltage amplitude amplitudes;
(15) carry out one the 4th operation program by the maximal value of these five the 5th voltage amplitude amplitudes, second largest value and the third-largest value, to obtain the relational coordinate value of a Y direction;
(16) carry out one the 5th operation program by the 4th antenna address, to obtain the base seat scale value of a Y direction; With
(17) carry out one the 6th operation program by the relational coordinate value of this Y direction and the base seat scale value of this Y direction, to obtain the absolute coordinates value of a Y direction.
42. the five-part form coordinate localization method of EM induction system as claimed in claim 41 is characterized in that, the equidirectional antenna groups of above-mentioned each comprises organize respectively more to be had in the same way and equidistant property displacement antenna loop.
43. the five-part form coordinate localization method of EM induction system as claimed in claim 42 is characterized in that, above-mentioned every group has in the same way and the antenna loop of equidistantly property displacement also comprises four strip antenna loops.
44. the five-part form coordinate localization method of EM induction system as claimed in claim 43 is characterized in that, every group of above-mentioned antenna loop can be received the electromagnetic induction signal of a signal emitting-source by at least three these antenna loops.
45. the five-part form coordinate localization method of EM induction system as claimed in claim 43 is characterized in that, above-mentioned every strip antenna loop also comprises one or four back ring type induction antennas.
46. the five-part form coordinate localization method of EM induction system as claimed in claim 41, it is characterized in that, it is when these a plurality of first voltage amplitude amplitudes are all discerned accurate position lower limit less than this signal that the first above-mentioned contrast program also comprises a step, carries out this directions X universe scanning step again.
47. the five-part form coordinate localization method of EM induction system as claimed in claim 41, it is characterized in that, it is when these a plurality of second voltage amplitude amplitudes are all discerned accurate position lower limit less than this signal that the second above-mentioned contrast program also comprises a step, carries out this directions X universe scanning step again.
48. the five-part form coordinate localization method of EM induction system as claimed in claim 41 is characterized in that, the 4th above-mentioned contrast program comprises one first logic step.
49. the five-part form coordinate localization method of EM induction system as claimed in claim 48, it is characterized in that, the above-mentioned first logic step is during for outermost antenna address in the peaked antenna address of these five tertiary voltage amplitudes, judges that signal source is the both sides of the edge district that is positioned at this directions X antenna groups of this four or four fraction antenna arrangement.
50. the five-part form coordinate localization method of EM induction system as claimed in claim 48, it is characterized in that, the above-mentioned first logic step is when being not outermost antenna address in the peaked antenna address of these five tertiary voltage amplitudes, to carry out this first operation program.
51. the five-part form coordinate localization method of EM induction system as claimed in claim 41, it is characterized in that, the first above-mentioned operation program comprises a base resolve constant value, and wherein, this base resolve constant value is that one inch expectation resolution is counted divided by the number of antennas within an inch.
52. the five-part form coordinate localization method of EM induction system as claimed in claim 41 is characterized in that the second above-mentioned operation program comprises this base resolve constant value.
53. the five-part form coordinate localization method of EM induction system as claimed in claim 41 is characterized in that, the absolute coordinates value of above-mentioned directions X be the relational coordinate value of this directions X and this directions X the base seat scale value and.
54. the five-part form coordinate localization method of EM induction system as claimed in claim 41 is characterized in that, the 5th above-mentioned contrast program comprises one second logic step.
55. the five-part form coordinate localization method of EM induction system as claimed in claim 54, it is characterized in that, the second above-mentioned logic step is during for outermost antenna address in the peaked antenna address of these five the 5th voltage amplitude amplitudes, judges that signal source is the both sides of the edge district that is positioned at this Y directional aerial group of this four or four fraction antenna arrangement.
56. the five-part form coordinate localization method of EM induction system as claimed in claim 54, it is characterized in that, when the second above-mentioned logic step is not outermost antenna address in the peaked antenna address of these five the 5th voltage amplitude amplitudes, carry out the 4th operation program.
57. the five-part form coordinate localization method of EM induction system as claimed in claim 41 is characterized in that the 4th above-mentioned operation program comprises this base resolve constant value.
58. the five-part form coordinate localization method of EM induction system as claimed in claim 41 is characterized in that the 5th above-mentioned operation program comprises this base resolve constant value.
59. the five-part form coordinate localization method of EM induction system as claimed in claim 41 is characterized in that, the absolute coordinates value of above-mentioned Y direction be the relational coordinate value of this Y direction and this Y direction the base seat scale value and.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 02119706 CN1208741C (en) | 2002-05-10 | 2002-05-10 | Antenna arrangement of electromagnetic inducing system and coordinate positioning method thereof |
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| CN 02119706 CN1208741C (en) | 2002-05-10 | 2002-05-10 | Antenna arrangement of electromagnetic inducing system and coordinate positioning method thereof |
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| CN1208741C true CN1208741C (en) | 2005-06-29 |
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| CN101807134B (en) * | 2009-02-13 | 2011-12-07 | 太瀚科技股份有限公司 | Electromagnetic induction system and unilateral coordinate positioning method |
| CN101957683B (en) * | 2010-10-08 | 2012-09-05 | 汉王科技股份有限公司 | Dual-mode input device and dual-mode input method |
| CN102566792A (en) * | 2010-12-17 | 2012-07-11 | 太瀚科技股份有限公司 | Antenna loop scanning method during coordinate calculation process of electromagnetic induction system |
| CN109445651A (en) * | 2018-11-09 | 2019-03-08 | 张银虎 | Electromagnetic screen antenna scanning method |
| CN110781639B (en) * | 2019-10-12 | 2023-01-06 | 苏州浪潮智能科技有限公司 | Method and device for automatic marking in PCB design |
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