CN107908299A - A kind of processing method of electromagnetic signal, apparatus and system - Google Patents
A kind of processing method of electromagnetic signal, apparatus and system Download PDFInfo
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- CN107908299A CN107908299A CN201711139562.4A CN201711139562A CN107908299A CN 107908299 A CN107908299 A CN 107908299A CN 201711139562 A CN201711139562 A CN 201711139562A CN 107908299 A CN107908299 A CN 107908299A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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Abstract
The invention discloses a kind of processing method of electromagnetic signal, apparatus and system, the processing procedure of target electromagnetic signal includes N number of processing period, and the N is the integer more than 1, the described method includes：Between the first processing period to N 1 handles the period, according to the period 1 of auxiliary signal, Integral Processing is carried out to target electromagnetic signal and auxiliary signal, obtains the range value of the target electromagnetic signal；Choose the corresponding signalling channel of maximum amplitude value, the sense channel as phase value；Within the N processing periods, according to the second round of the auxiliary signal, Integral Processing is carried out to the target electromagnetic signal and the auxiliary signal, obtains the phase value of the target electromagnetic signal；According to default range value and the incidence relation of phase value, the range value and the phase value are analyzed, obtain the phase change value of the target electromagnetic signal.Technical solution using the present invention, it is possible to increase the accuracy of detection of time writer.
Description
Technical field
The present invention relates to technical field of electromagnetic touch control, and in particular to a kind of processing method of electromagnetic signal, apparatus and system.
Background technology
It is very extensive to be currently based on human-computer interaction device's application of electromagnetic induction technology, this equipment must be by electromagnetic touch
Pen (abbreviation time writer) and electromagnetic touch plate (abbreviation magnetic board) cooperating, time writer and magnetic board collectively constitute electromagnetism group
Part, accuracy of detection are higher.
In the prior art, after usually electromagnetic signal is shunted, the phase angle variations and width of electromagnetic signal are detected respectively
Angle value, to determine the physical location of the pressure value of time writer and time writer.
But since the electromagnetic signal strength of reception is weaker, is easily influenced be subject to clutter, electromagnetic signal is divided
Stream can there are problems with：
1st, further weaken signal strength, bring the loss of signal-to-noise ratio (SIGNAL-NOISE RATIO, SNR).
2nd, easily it is subject to crosstalk between each branch.
3rd, since the driving force of prime amplifier is limited, so electromagnetic signal is influenced to increase by auxiliary detection signal, hold
Easily there is larger overshoot noise.
Therefore, in the prior art when being positioned to time writer, the accuracy of detection of time writer is reduced.
The content of the invention
It is an object of the invention to provide a kind of processing method of electromagnetic signal, apparatus and system, it is possible to increase time writer
Accuracy of detection.
To achieve the above object, the present invention provides a kind of processing method of electromagnetic signal, and target electromagnetic signal treats
Journey includes N number of processing period, and the N is the integer more than 1, the described method includes：
Between the first processing period to N-1 handles the period, according to the period 1 of auxiliary signal, target electromagnetic is believed
Number and auxiliary signal carry out Integral Processing, obtain the range value of the target electromagnetic signal；
Choose the corresponding signalling channel of maximum amplitude value, the sense channel as phase value；
Within the N processing periods, according to the second round of the auxiliary signal, to the target electromagnetic signal and described auxiliary
Help signal to carry out Integral Processing, obtain the phase value of the target electromagnetic signal；
According to default range value and the incidence relation of phase value, the range value and the phase value are analyzed,
Obtain the phase change value of the target electromagnetic signal；
Wherein, the period 1 is different from the second round.
Further, in method described above, according to the second round of the auxiliary signal, the target electromagnetic is believed
Number and the auxiliary signal carry out Integral Processing, before obtaining the phase value of the target electromagnetic signal, further include：
Obtain the cycle of the target electromagnetic signal；
According to the cycle of the target electromagnetic signal, the second round is set.
Further, in method described above, according to the cycle of the target electromagnetic signal, the second week is set
Phase, including：
It is π that the second round, which is arranged to differ with the phase of the target electromagnetic signal, and with the target electromagnetic
Identical cycle signal period.
Further, in method described above, between the first processing period to N-1 handles the period, according to auxiliary
The period 1 of signal, carries out Integral Processing to target electromagnetic signal and auxiliary signal, obtains the width of the target electromagnetic signal
Before angle value, further include：
According to the electromagnetic signal of transmitting and the time interval of the electromagnetic signal received, the period 1 is set.
Further, in method described above, between the first processing period to N-1 handles the period, according to auxiliary
The period 1 of signal, carries out Integral Processing to target electromagnetic signal and auxiliary signal, obtains the width of the target electromagnetic signal
Before angle value, further include：
Processing is filtered to the electromagnetic signal of the reception, obtains filtered electromagnetic signal；
Rectification processing is carried out to the filtered electromagnetic signal, the electromagnetic signal after rectification is obtained, as the target
Electromagnetic signal.
The present invention also provides a kind of processing unit of electromagnetic signal, the processing procedure of target electromagnetic signal includes N number of processing
Period, the N are the integer more than 1, and described device includes phase-amplitude detection module and processor；
The phase-amplitude detection module is used between the first processing period to N-1 handles the period, is believed according to auxiliary
Number period 1, Integral Processing is carried out to target electromagnetic signal and auxiliary signal, obtains the amplitude of the target electromagnetic signal
Value；Choose the corresponding signalling channel of maximum amplitude value, the sense channel as phase value；Within the N processing periods, according to described
The second round of auxiliary signal, carries out Integral Processing to the target electromagnetic signal and the auxiliary signal, obtains the target
The phase value of electromagnetic signal；
The processor is used for the incidence relation according to default range value and phase value, to the range value and the phase
Place value is analyzed, and obtains the phase change value of the target electromagnetic signal；
Wherein, the period 1 is different from the second round.
Further, in device described above, the processor is additionally operable to obtain the cycle of the target electromagnetic signal,
According to the cycle of the target electromagnetic signal, the second round is set.
Further, in device described above, the processor is additionally operable to electromagnetic signal and reception according to transmitting
The time interval of electromagnetic signal, sets the period 1.
Further, device described above, further includes：
Wave filter, for being filtered processing to the electromagnetic signal of the reception, obtains filtered electromagnetic signal；
Rectifier, for carrying out rectification processing to the filtered electromagnetic signal, obtains the electromagnetic signal after rectification, makees
For the target electromagnetic signal.
The present invention also provides a kind of processing system of electromagnetic signal, including the place of time writer and electromagnetic signal as described above
Manage device；
The processing unit of the electromagnetic signal is provided with aerial array；
Signal interaction is carried out between the time writer and the aerial array.
The processing method of the electromagnetic signal of the present invention, apparatus and system, by using time sharing principle, the period is handled first
To between the N-1 processing periods, according to the period 1 of auxiliary signal, target electromagnetic signal and auxiliary signal are carried out at integration
Reason, obtains the range value of target electromagnetic signal, within the N processing periods, according to the second round of auxiliary signal, to target electromagnetic
Signal and auxiliary signal carry out Integral Processing, obtain the phase value of target electromagnetic signal, and according to default range value and phase
The incidence relation of value, analyzes range value and phase value, obtains the phase change value of target electromagnetic signal, realizes not
In the case of shunting processing being carried out to target electromagnetic signal, you can detect the phase value and range value of target electromagnetic signal, with
Determine pressure and the position of time writer.Technical solution using the present invention, it is possible to increase the accuracy of detection of time writer.
Brief description of the drawings
Fig. 1 is the flow chart of the processing method embodiment one of the electromagnetic signal of the present invention.
Fig. 2 is the flow chart of the processing method embodiment two of the electromagnetic signal of the present invention.
Fig. 3 is the sequence diagram of electromagnetic signal in the present invention.
Fig. 4 is the rectification amplification circuit diagram of the present invention.
Fig. 5 is the phase/amplitude detection circuit figure of the present invention.
Fig. 6 is the verification result schematic diagram that the processing method of application electromagnetic signal of the present invention obtains.
Fig. 7 is the structure diagram of the processing unit embodiment one of the electromagnetic signal of the present invention.
Fig. 8 is the structure diagram of the processing unit embodiment two of the electromagnetic signal of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with of the invention specific real
Apply example and technical solution of the embodiment of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment
Only it is part of the embodiment of the embodiment of the present invention, instead of all the embodiments.Based on the embodiment in the embodiment of the present invention, sheet
Field those of ordinary skill all other embodiments obtained without making creative work, belong to the present invention
The scope of embodiment protection.
The (if present)s such as term " first ", " second " in specification and claims and above-mentioned attached drawing are to be used for area
Not similar part, without for describing specific order or precedence.It should be appreciated that the data so used are appropriate
In the case of can exchange, so that embodiments herein described herein can be real with the order in addition to illustrating herein
Apply.
Following embodiments are used to illustrate the present invention, but are not limited to the scope of the present invention.
Embodiment 1
Fig. 1 is the flow chart of the processing method embodiment one of the electromagnetic signal of the present invention, as shown in Figure 1, the present embodiment
The processing method of electromagnetic signal specifically may include steps of：
100th, between the first processing period to N-1 handles the period, according to the period 1 of auxiliary signal, to target electricity
Magnetic signal and auxiliary signal carry out Integral Processing, obtain the range value of target electromagnetic signal.
During a specific implementation, the processing method of the electromagnetic signal of the present embodiment is at the place to target electromagnetic signal
During reason, its processing procedure can include N number of processing period, time sharing principle can be utilized, in the period of setting, according to auxiliary signal
Cycle target electromagnetic signal is handled, to detect the range value of target electromagnetic signal and phase value.Wherein, N is more than 1
Integer.
Specifically, in amplitude detection, can be believed between the first processing period to N-1 handles the period according to auxiliary
Number period 1, Integral Processing is carried out to target electromagnetic signal and auxiliary signal, obtains the range value of target electromagnetic signal, with
Determine the physical location of time writer.
101st, the corresponding signalling channel of maximum amplitude value, the sense channel as phase value are chosen.
After the passage that time writer closes on has been detected, the corresponding signalling channel of maximum amplitude value can be chosen, as
The sense channel of phase value.
For example, time writer adjacent passages include 3 passages X1, X2 and X3 of X-direction, 3 passages Y1, Y2 of Y-direction and
Y3, however, it is determined that the range value in X1 directions is maximum, at this point it is possible to select the passage in X1 directions as the sense channel of phase value.
102nd, within the N processing periods, according to the second round of auxiliary signal, to target electromagnetic signal and auxiliary signal into
Row Integral Processing, obtains the phase value of target electromagnetic signal.
, can be in last processing period detection target after the sense channel of phase value is determined in phase-detection
The phase value of electromagnetic signal.I.e. within the N processing periods, according to the second round of auxiliary signal, to target electromagnetic signal and auxiliary
Help signal to carry out Integral Processing, obtain the phase value of target electromagnetic signal.Wherein, the period 1 is different from second round.
In the processing method of the electromagnetic signal of the present embodiment, during due to amplitude detection and phase-detection, target electromagnetic signal
Shunting processing is not done, its signal strength is relatively strong, and the loss of SNR is less, is influenced by auxiliary signal smaller, it is not easy to occur
Larger overshoot noise, and since target electromagnetic signal is without shunting, branch is not present in it, is also just not present between each branch easily
It is subject to the phenomenon of crosstalk.
103rd, according to default range value and the incidence relation of phase value, range value and phase value is analyzed, obtained
The phase change value of target electromagnetic signal.
In the present embodiment, the incidence relation of range value and phase value can be pre-set, for example, the range value and phase value
Incidence relation can be but be not restricted to the functional relation of range value and phase value, and utilize range value and the function of phase value
Relation, analyzes range value and phase value, obtains the phase change value of target electromagnetic signal, to determine the pressure of time writer
Value.
In the processing method of the electromagnetic signal of the present embodiment, due to the time interval ratio between amplitude detection and phase-detection
Ofer short duration, its influence to testing result is smaller, so obtained testing result is relatively accurate.
The executive agent of the processing method of the electromagnetic signal of the embodiment of the present invention can be the processing unit of electromagnetic signal, should
The processing unit of electromagnetic signal can specifically be integrated by software and/or hardware, and the present invention is to this without being particularly limited to.
The processing method of the electromagnetic signal of the present embodiment, by using time sharing principle, at the first processing period to N-1
Between managing the period, according to the period 1 of auxiliary signal, Integral Processing is carried out to target electromagnetic signal and auxiliary signal, obtains mesh
The range value of electromagnetic signal is marked, within the N processing periods, according to the second round of auxiliary signal, to target electromagnetic signal and auxiliary
Help signal to carry out Integral Processing, obtain the phase value of target electromagnetic signal, and associating according to default range value and phase value
Relation, analyzes range value and phase value, obtains the phase change value of target electromagnetic signal, realizes not to target electricity
In the case that magnetic signal carries out shunting processing, you can the phase value and range value of target electromagnetic signal are detected, to determine electromagnetism
The pressure of pen and position.Technical solution using the present invention, it is possible to increase the accuracy of detection of time writer.
Embodiment 2
Fig. 2 is the flow chart of the processing method embodiment two of the electromagnetic signal of the present invention, as shown in Fig. 2, the present embodiment
The processing method of electromagnetic signal is on the basis of embodiment illustrated in fig. 1, further in further detail to technical scheme
It is described.
As shown in Fig. 2, the processing method of the electromagnetic signal of the present embodiment specifically may include steps of：
200th, to time writer transmission of electromagnetic signals.
201st, the electromagnetic signal of time writer transmitting is received.
During a specific implementation, can according to the time interval of default signal transmitting and receiving by aerial array to electricity
Magnetic pen transmission of electromagnetic signals and the electromagnetic signal for receiving time writer transmitting, for example, can at a time pass through aerial array
To time writer transmission of electromagnetic signals, after time writer receives electromagnetic signal, resonance can be produced, electromagnetic signal is produced in time writer,
When reaching default time interval, the electromagnetic signal that can be launched by antenna array receiver time writer.
202nd, processing is filtered to the electromagnetic signal of reception, obtains filtered electromagnetic signal.
For example, after the electromagnetic signal of time writer transmitting is received, filter amplifier can be utilized to believe the electromagnetism of reception
Number processing is filtered, obtains filtered electromagnetic signal.
203rd, rectification processing is carried out to filtered electromagnetic signal, the electromagnetic signal after rectification is obtained, as target electromagnetic
Signal.
For example, rectification enhanced processing can be carried out to filtered electromagnetic signal by rectification amplifier, after obtaining rectification
Electromagnetic signal, as target electromagnetic signal.
204th, according to the electromagnetic signal of transmitting and the time interval of the electromagnetic signal of reception, the period 1 is set.
For example, it can be set in the present embodiment according to the electromagnetic signal of transmitting and the time interval of the electromagnetic signal received
The auxiliary signal period 1, makes the auxiliary signal period 1 with aerial array transmission of electromagnetic signals and receives the time of electromagnetic signal
Interval is consistent.
It should be noted that sequencing relation is not present between step 202- steps 203 and step 204.
205th, between the first processing period to N-1 handles the period, according to the period 1 of auxiliary signal, to target electricity
Magnetic signal and auxiliary signal carry out Integral Processing, obtain the range value of target electromagnetic signal.
206th, the corresponding signalling channel of maximum amplitude value, the sense channel as phase value are chosen.
207th, within the N processing periods, the cycle of target electromagnetic signal is obtained.
208th, according to the cycle of target electromagnetic signal, second round is set.
Within the N processing periods, however, it is determined that go out the sense channel of phase value, the cycle of target electromagnetic signal can be obtained,
With the cycle according to target electromagnetic signal, the second round of auxiliary signal is set.
For example, it is π that can be arranged to the second round of auxiliary signal to differ with the phase of target electromagnetic signal, and and mesh
Mark the electromagnetic signal cycle phase same cycle.
It should be noted that auxiliary signal and the phase of target electromagnetic signal can be set according to the actual requirements in the present embodiment
Potential difference.
209th, according to the second round of auxiliary signal, Integral Processing is carried out to target electromagnetic signal and auxiliary signal, is obtained
The phase value of target electromagnetic signal.
210th, according to default range value and the incidence relation of phase value, range value and phase value is analyzed, obtained
The phase change value of target electromagnetic signal.
For example, the incidence relation of range value and phase value can be following functional relation in the present embodiment：
θ=f (Vphase/Vamplitude) (1)
Wherein, θ is the phase change value of target electromagnetic signal, and Vphase is phase value, and Vamplitude is range value.
By taking maximum amplitude value is X-direction passage as an example, the ratio of phase value and range value can be set according to the actual requirements
The corresponding calculation formula of relation, can say technical scheme exemplified by formula by being calculated as below in the present embodiment
It is bright：
It can obtain the phase change value of target electromagnetic signal by above-mentioned formula (2) and (3), and then determine time writer
Pressure value.
It should be noted that above-mentioned formula (2) and (3) they are when time writer does not press, auxiliary signal and electromagnetic signal phase
Position is identical；Alternatively, after time writer pressing, (so that resonant frequency is bigger, phase is moved for inductance value reduction or capacitance reduction
It is dynamic) under the conditions of establish, if when auxiliary signal is initial with electromagnetic signal phase difference of pi, alternatively, inductance or capacitance increase after pressing
Deng under the conditions of, different calculation formula can be established, to be analyzed, and then determines the change at phase angle, herein no longer one by one
Illustrate.
The processing method of the electromagnetic signal of the present embodiment, due to not carrying out shunting processing to target electromagnetic signal, it is carried out
When phase-detection and amplitude detection, it can be completed by same component, reduce the quantity of component, simple in structure, cost
It is relatively low.
Technical scheme is described with specific example below.
Fig. 3 is the sequence diagram of electromagnetic signal in the present invention, as shown in figure 3, at the T0 moment, processor can control multiplexing to open
Close, select the passage where time writer, by aerial array to time writer transmission of electromagnetic signals S0, time writer receives electromagnetism letter
After number S0, resonance can be produced, generates electromagnetic signal.At the T1 moment, aerial array stops transmission of electromagnetic signals S0, switchs to receive electricity
Magnetic signal, and after filtered amplifier is filtered amplification, obtain filtered electromagnetic signal S1, and rectified amplifier pair
Electromagnetic signal S1 obtains the electromagnetic signal S2 after rectification after carrying out rectification enhanced processing.Wherein, processor is preferably microcontroller list
First (Microcontroller Unit, MCU).
Fig. 4 is the rectification amplification circuit diagram of the present invention, it can use accurate half-wave rectifying circuit to realize.As shown in figure 4,
The essence that the present embodiment electromagnetic signal S1 is formed via resistance R1, resistance R2, diode D1, diode D2 and operational amplifier OP1
Close half-wave rectifying circuit can export electromagnetic signal S2 after carrying out rectification enhanced processing, and using electromagnetic signal S2 as target electromagnetic
In signal input phase/amplitude detection circuit.
Fig. 5 is the phase/amplitude detection circuit figure of the present invention, as shown in figure 5, the phase/amplitude detection electricity of the present embodiment
Road figure is formed by control chip U, resistance R3, resistance R4, resistance R5, capacitance C, operational amplifier OP2 and operational amplifier OP3.
After electromagnetic signal S2 is obtained, auxiliary signal S3 is inputted, and under integral control signal S4 effects, using circuit diagram shown in Fig. 5,
Integral Processing, the electromagnetic signal S5 after being integrated are carried out to electromagnetic signal S2 and auxiliary signal S3.
For example, can select the control chip of model 74LVC2G66 in the present embodiment, there is a two-way simulation to open for it
Close, for controlling electromagnetic signal S2 and auxiliary signal S3 to carry out logical AND operation, to complete to integrate, obtain corresponding range value or
Phase value.Wherein, the effect of operational amplifier OP2 be by analog switch come out signal make it is anti-phase, to utilize operation amplifier
Device OP3 carries out anti-phase integration, and signal S4 is used for the opening and closing for controlling anti-phase integration.
As shown in figure 3, in amplitude detection, according to the electromagnetic signal of transmitting and the time interval of the electromagnetic signal received,
The period 1 of auxiliary signal S3 is set, for example, in T1 to T2 periods, T3 to T4 periods period ... Tn-3 to Tn-2, will be auxiliary
Help the high level that is arranged to of signal S3, T2 to T3 periods, T4 to T5 periods period ... Tn-2 to Tn-1, by auxiliary signal S3's
Low level is arranged to, Integral Processing is carried out to electromagnetic signal S2 and auxiliary signal S3, corresponding electromagnetic signal S5 is obtained, as width
The signal of angle value.In phase-detection, can be arranged to the phase with target electromagnetic signal the second round of auxiliary signal S3
Differ as π, and the cycle identical with the target electromagnetic signal period, in Tn-1 to the Tn periods, to electromagnetic signal S2 and auxiliary signal
S3 carries out Integral Processing, corresponding electromagnetic signal S5 is obtained, as phase value signal.Processor utilizes formula (2) and (3), right
The signal of range value and the signal of phase value carry out analog-to-digital conversion, obtain the phase change value of electromagnetic signal S2, and then determine electricity
The pressure value of magnetic pen.
Fig. 6 is the verification result schematic diagram that the processing method of application electromagnetic signal of the present invention obtains.As shown in fig. 6, electromagnetism
Signal S2' be time writer do not press in the case of waveform, electromagnetic signal S2 " be time writer pressing in the case of waveform, due to by
Variable capacitance or variable inductance value after pressure in time writer change, and cause the phase of its resonance wave also to change, can be with
Find out that it generates a phase shift compared to electromagnetic signal S2'.Integral Processing is carried out to auxiliary signal S3 and electromagnetic signal S2'
Electromagnetic signal S5' after being integrated, carries out auxiliary signal S3 and electromagnetic signal S2 " electromagnetism after Integral Processing is integrated
Signal S5 ", it can be seen that S5' is close to 0 integrated waveform always, and since phase shift occurs, S5 " is in upward integrated waveform.
Embodiment 3
Fig. 7 is the structure diagram of the processing unit embodiment one of the electromagnetic signal of the present invention, as shown in fig. 7, this implementation
The device of example can include phase-amplitude detection module 10 and processor 11, and phase-amplitude detection module 10 is electrically connected with processor 11
Connect.
During a specific implementation, in the processing to target electromagnetic signal, its processing procedure can include N number of place
The period is managed, using time sharing principle, in the period of setting, target electromagnetic signal is handled according to the cycle of auxiliary signal, with
Detect the range value and phase value of target electromagnetic signal.Wherein, N is the integer more than 1.
Specifically, phase-amplitude detection module 10 is used between the first processing period to N-1 handles the period, according to auxiliary
The period 1 of signal is helped, Integral Processing is carried out to target electromagnetic signal and auxiliary signal, obtains the amplitude of target electromagnetic signal
Value；Choose the corresponding signalling channel of maximum amplitude value, the sense channel as phase value；Within the N processing periods, according to auxiliary
The second round of signal, carries out Integral Processing to target electromagnetic signal and auxiliary signal, obtains the phase value of target electromagnetic signal；
Processor 11 is used for the incidence relation according to default range value and phase value, and range value and phase value are divided
Analysis, obtains the phase change value of target electromagnetic signal；Wherein, the period 1 is different from second round.
The processing unit of the electromagnetic signal of the present embodiment, the phase of detection target electromagnetic signal is realized by using said structure
The realization mechanism of position changing value is identical with the realization mechanism of above-mentioned embodiment illustrated in fig. 1, may be referred in detail real shown in above-mentioned Fig. 1
The record of example is applied, details are not described herein.
The processing unit of the electromagnetic signal of the present embodiment, by using said structure and utilizes time sharing principle, at first
The period is managed between the N-1 processing periods, according to the period 1 of auxiliary signal, target electromagnetic signal and auxiliary signal are carried out
Integral Processing, obtains the range value of target electromagnetic signal, within the N processing periods, according to the second round of auxiliary signal, to mesh
Mark electromagnetic signal and auxiliary signal carries out Integral Processing, obtain the phase value of target electromagnetic signal, and according to default range value
With the incidence relation of phase value, range value and phase value are analyzed, obtain the phase change value of target electromagnetic signal, is realized
In the case where not carrying out shunting processing to target electromagnetic signal, you can detect the phase value and amplitude of target electromagnetic signal
Value, to determine the pressure of time writer and position.Technical solution using the present invention, it is possible to increase the accuracy of detection of time writer.
Embodiment 4
Fig. 8 is the structure diagram of the processing unit embodiment two of the electromagnetic signal of the present invention, as shown in fig. 7, this implementation
The device of example can also further include aerial array 12, the wave filter being sequentially connected electrically on the basis of embodiment illustrated in fig. 7
13 and rectifier 14, rectifier 14 be electrically connected with phase-amplitude detection module 10.
Aerial array 12 is used for time writer transmission of electromagnetic signals, alternatively, receiving the electromagnetic signal of time writer transmitting；
Wave filter 13 is used to be filtered processing to the electromagnetic signal of reception, obtains filtered electromagnetic signal；
Rectifier 14, for carrying out rectification processing to filtered electromagnetic signal, obtains the electromagnetic signal after rectification, as
Target electromagnetic signal.
Processor 11 is additionally operable to the time interval of the electromagnetic signal and the electromagnetic signal received according to transmitting, sets first week
Phase, and, the cycle of target electromagnetic signal is obtained, according to the cycle of target electromagnetic signal, second round is set.For example, can be with
It is π that second round, which is arranged to differ with the phase of target electromagnetic signal, and the cycle identical with the target electromagnetic signal period.
The processing unit of the electromagnetic signal of the present embodiment, the phase of detection target electromagnetic signal is realized by using said structure
The realization mechanism of position changing value is identical with the realization mechanism of above-mentioned embodiment illustrated in fig. 2, may be referred in detail real shown in above-mentioned Fig. 2
The record of example is applied, details are not described herein.
The present invention also provides a kind of processing system of electromagnetic signal, the processing system of the electromagnetic signal can include time writer
With the processing unit of the electromagnetic signal described in Fig. 7 or Fig. 8；
Wherein, the processing unit of electromagnetic signal is provided with aerial array, and signal friendship is carried out between time writer and aerial array
Mutually.
The processing system of the electromagnetic signal of the present embodiment, the phase of detection target electromagnetic signal is realized by using said structure
The realization mechanism of position changing value is identical with the realization mechanism of above-mentioned Fig. 1 or embodiment illustrated in fig. 2, may be referred to above-mentioned Fig. 1 in detail
Or the record of embodiment illustrated in fig. 2, details are not described herein.
Although above with general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to the scope of protection of present invention.
Claims (10)
1. a kind of processing method of electromagnetic signal, it is characterised in that when the processing procedure of target electromagnetic signal includes N number of processing
Section, the N are the integer more than 1, the described method includes：
Between the first processing period to N-1 handles the period, according to the period 1 of auxiliary signal, to target electromagnetic signal and
Auxiliary signal carries out Integral Processing, obtains the range value of the target electromagnetic signal；
Choose the corresponding signalling channel of maximum amplitude value, the sense channel as phase value；
Within the N processing periods, according to the second round of the auxiliary signal, the target electromagnetic signal and the auxiliary are believed
Number carry out Integral Processing, obtain the phase value of the target electromagnetic signal；
According to default range value and the incidence relation of phase value, the range value and the phase value are analyzed, obtained
The phase change value of the target electromagnetic signal；
Wherein, the period 1 is different from the second round.
2. according to the method described in claim 1, it is characterized in that, according to the second round of the auxiliary signal, to the mesh
Mark electromagnetic signal and the auxiliary signal carries out Integral Processing, before obtaining the phase value of the target electromagnetic signal, further include：
Obtain the cycle of the target electromagnetic signal；
According to the cycle of the target electromagnetic signal, the second round is set.
3. according to the method described in claim 2, it is characterized in that, according to the cycle of the target electromagnetic signal, described in setting
Second round, including：
It is π that the second round, which is arranged to differ with the phase of the target electromagnetic signal, and with the target electromagnetic signal
The cycle phase same cycle.
4. according to any methods of claim 1-3, it is characterised in that handle the period in the first processing period to N-1
Between, according to the period 1 of auxiliary signal, Integral Processing is carried out to target electromagnetic signal and auxiliary signal, obtains the target
Before the range value of electromagnetic signal, further include：
According to the electromagnetic signal of transmitting and the time interval of the electromagnetic signal received, the period 1 is set.
5. according to the method described in claim 4, it is characterized in that, first processing the period to N-1 handle the period between, root
According to the period 1 of auxiliary signal, Integral Processing is carried out to target electromagnetic signal and auxiliary signal, obtains the target electromagnetic letter
Number range value before, further include：
Processing is filtered to the electromagnetic signal of the reception, obtains filtered electromagnetic signal；
Rectification processing is carried out to the filtered electromagnetic signal, the electromagnetic signal after rectification is obtained, as the target electromagnetic
Signal.
6. a kind of processing unit of electromagnetic signal, it is characterised in that when the processing procedure of target electromagnetic signal includes N number of processing
Section, the N are the integer more than 1, and described device includes phase-amplitude detection module and processor；
The phase-amplitude detection module is used between the first processing period to N-1 handles the period, according to auxiliary signal
Period 1, carries out Integral Processing to target electromagnetic signal and auxiliary signal, obtains the range value of the target electromagnetic signal；Choosing
Take the corresponding signalling channel of maximum amplitude value, the sense channel as phase value；Within the N processing periods, according to the auxiliary
The second round of signal, carries out Integral Processing to the target electromagnetic signal and the auxiliary signal, obtains the target electromagnetic
The phase value of signal；
The processor is used for the incidence relation according to default range value and phase value, to the range value and the phase value
Analyzed, obtain the phase change value of the target electromagnetic signal；
Wherein, the period 1 is different from the second round.
7. device according to claim 6, it is characterised in that the processor is additionally operable to obtain the target electromagnetic signal
Cycle, according to the cycle of the target electromagnetic signal, the second round is set.
8. the device according to claim 6 or 7, it is characterised in that the processor is additionally operable to be believed according to the electromagnetism of transmitting
Number and receive electromagnetic signal time interval, the period 1 is set.
9. device according to claim 8, it is characterised in that further include：
Wave filter, for being filtered processing to the electromagnetic signal of the reception, obtains filtered electromagnetic signal；
Rectifier, for carrying out rectification processing to the filtered electromagnetic signal, obtains the electromagnetic signal after rectification, as institute
State target electromagnetic signal.
10. a kind of processing system of electromagnetic signal, it is characterised in that including time writer and as described in claim 6-9 is any
The processing unit of electromagnetic signal；
The processing unit of the electromagnetic signal is provided with aerial array；
Signal interaction is carried out between the time writer and the aerial array.
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