CN110138062A - Twin coil wireless and passive time writer and its control circuit and control method - Google Patents
Twin coil wireless and passive time writer and its control circuit and control method Download PDFInfo
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- CN110138062A CN110138062A CN201910425992.5A CN201910425992A CN110138062A CN 110138062 A CN110138062 A CN 110138062A CN 201910425992 A CN201910425992 A CN 201910425992A CN 110138062 A CN110138062 A CN 110138062A
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- 238000000034 method Methods 0.000 title claims description 16
- 239000003990 capacitor Substances 0.000 claims description 115
- 238000000605 extraction Methods 0.000 claims description 32
- 230000033228 biological regulation Effects 0.000 claims description 27
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 18
- 238000004146 energy storage Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000003491 array Methods 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H02J7/025—
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Abstract
A kind of twin coil wireless and passive time writer control circuit, by the way that the first coil for being served only for receiving input signal is added and is served only for the second coil of transmitting output signal, to ensure that transmitting signal and receive signal can simultaneously and non-interfering progress, it avoids the need for constantly toggling transmitting signal and receives signal, to solve the problems, such as that transmitting jitter, working efficiency are low present in traditional technical solution, signal processing difficulty is big and poor anti jamming capability.
Description
Technical field
The invention belongs to time writer technical field more particularly to a kind of twin coil wireless and passive time writer and its control circuits
And control method.
Background technique
Currently, traditional electromagnetic hand-writing pen is usually that signal and transmitting signal are received with the same induction coil,
Induction coil will constantly switch between signal and transmitting signal receiving, but emit signal and receive what signal toggled
It is easy to cause that transmitting jitter, working efficiency are low, signal processing difficulty is big and poor anti jamming capability in the process.
Therefore, have that transmitting jitter, working efficiency are low, signal processing difficulty is big in traditional technical solution and
The problem of poor anti jamming capability.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of twin coil wireless and passive time writer and its control circuit and controls
Method, it is intended to solve present in traditional technical solution transmitting jitter, working efficiency be low, signal processing difficulty greatly with
And the problem of poor anti jamming capability.
The first aspect of the embodiment of the present invention provides a kind of twin coil wireless and passive time writer control circuit, comprising: the
One coil, the first coil are set as receiving input signal；Second coil, second coil are set as transmitting output letter
Number；Energy extraction module, the Energy extraction module are connect with the first coil, and the Energy extraction module is set as from institute
It states and extracts energy in transmission signal and be converted to DC voltage；Power supply module, the power supply module and the Energy extraction module
Connection, the power supply module are set as the DC voltage switching to target voltage；And output signal generation module, it is described defeated
Signal generator module is connect with the power supply module and second coil out, and the output signal generation module is set as institute
Target voltage is stated to be converted to the output signal and externally emit the output signal by second coil.
In one embodiment, the Energy extraction module includes: resonant element, the resonant element and the First Line
Circle connection, institute's resonant element are set as extracting the energy of the input signal and export alternating current；Rectification unit, the rectification are single
The input terminal of member is connect with the resonant element, and the rectification unit is set as the alternating current being converted to direct current；Pressure stabilizing
Unit, the input terminal of the voltage regulation unit are connect with the output end of the rectification unit, and the voltage regulation unit setting will be described straight
Galvanic electricity output is constant DC voltage；And energy-storage units, the input terminal of the energy-storage units are defeated with the voltage regulation unit
Outlet connection, the energy-storage units are set as storing the DC voltage of the voltage regulation unit output.
In one embodiment, the resonant element includes the first shunt capacitance array, the first shunt capacitance array
First end connect with the first output end of the first coil, the second end of the first shunt capacitance array and described first
The second output terminal of coil connects.
In one embodiment, the rectification unit includes first diode, the second diode, third diode and
Four diodes, the anode of the first diode and the anode of second diode are connected to ground altogether, the first diode
The anode of cathode and the 4th diode connects the first input end as the rectification unit altogether, and the 4th diode is born
The cathode of pole and the third diode meets the output end as the rectification unit, the cathode of second diode and institute altogether
The anode for stating third diode connects the second input terminal as the rectification unit altogether.
In one embodiment, the voltage regulation unit includes the second shunt capacitance array, first resistor, second resistance, the
Five diodes and first switch tube, the first end of the second shunt capacitance array, the first end of the first resistor and institute
The input terminal for stating first switch tube is connected to the output end of the rectification unit altogether, the second end of the second shunt capacitance array,
The first end of the positive and described second resistance of 5th diode is connected to ground, the cathode of the 5th diode and institute altogether
The second end for stating first resistor is connected to the control terminal of the first switch tube, the output end of the first switch tube and described second
The second end of resistance connects the output end as the voltage regulation unit altogether.
In one embodiment, the energy-storage units include third shunt capacitance array, the third shunt capacitance array
First end connect with the output end of the voltage regulation unit, the second end of third shunt capacitance array ground connection.
In one embodiment, the power supply module includes: the first inductance, voltage conversion chip and the 4th shunt capacitance
Array, the first end of the first inductance be connected to the Energy extraction module output end connection, the second end of first inductance with
The power end of the voltage conversion chip connects, the output of the enable end of the voltage conversion chip and the Energy extraction module
End connection, the output end of the voltage conversion chip and the 4th shunt capacitance array are connect altogether as the defeated of the power supply module
Outlet, the feedback end of the voltage conversion chip and the 4th shunt capacitance array are connected to ground altogether.
In one embodiment, the output signal generation module includes first capacitor, the second capacitor, third capacitor,
Four capacitors, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, second switch and the 5th shunt capacitance array, institute
State the 5th shunt capacitance array first end, the first end of the 5th resistance and the first end of the first capacitor connect altogether with
The first input end of the output end of the power supply module and second coil, the second end of the 5th shunt capacitance array and
The input terminal of the second switch is connected with the first end of the third capacitor, the second end ground connection of the first capacitor, institute
State the second end of the 5th resistance, the first end of the 6th resistance, the first end of second capacitor and the second switch
The control terminal of pipe connects altogether, and one end of the 3rd resistor is connect with the output end of the second switch, second capacitor
Second end, the second end of the 6th resistance, the second end of the 4th resistance and the second end of the 4th capacitor connect altogether
Yu Di, the first end of the 4th resistance, the first end of the 4th capacitor, the second end of the third capacitor and described
The second end of three resistance connects altogether.
The second aspect of the embodiment of the present invention provides a kind of twin coil wireless and passive time writer, comprising: pen core；Magnetic core,
The magnetic core is fixedly connected with the pen core；Elastomeric element, the elastomeric element is connect with the pen core and the magnetic core, described
Elastomeric element is to the movement pen core and the magnetic core；And twin coil wireless and passive time writer control electricity as described above
Road, the first coil and second coil are sheathed on the magnetic core.
The third aspect of the embodiment of the present invention provides a kind of control method of twin coil wireless and passive time writer, the control
Method processed is applied to twin coil wireless and passive time writer, and the twin coil wireless and passive time writer includes first coil and the second line
Circle, the control method the following steps are included:
Extraneous input signal is received by the first coil；
Obtain the energy of the input signal；
The energy is converted into steady dc voltage and is stored；
The DC voltage is converted into preset target voltage；
The target voltage is converted into output signal；
The output signal is launched outward by second coil.
Above-mentioned twin coil wireless and passive time writer control circuit, by the way that the First Line for being served only for receiving input signal is added
The second coil of transmitting output signal is enclosed and is served only for, to ensure that transmitting signal and receive signal and can while and not do mutually
The progress disturbed avoids the need for constantly toggling transmitting signal and receives signal, to solve in traditional technical solution
The problem of existing transmitting jitter, working efficiency are low, signal processing difficulty is big and poor anti jamming capability.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the circuit diagram for the twin coil wireless and passive time writer control circuit that one embodiment of the invention provides；
Fig. 2 is that the exemplary circuit of Energy extraction module in twin coil wireless and passive time writer control circuit shown in FIG. 1 is former
Reason figure；
Fig. 3 is the exemplary circuit schematic diagram of the resonant element of Energy extraction module shown in Fig. 2；
Fig. 4 is the exemplary circuit schematic diagram of the rectification unit of Energy extraction module shown in Fig. 2；
Fig. 5 is the exemplary circuit schematic diagram of the voltage regulation unit of Energy extraction module shown in Fig. 2；
Fig. 6 is the exemplary circuit schematic diagram of the energy-storage units of Energy extraction module shown in Fig. 2；
Fig. 7 is the exemplary circuit schematic diagram of power supply module in twin coil wireless and passive time writer control circuit shown in FIG. 1；
Fig. 8 is the example electricity of output signal generation module in twin coil wireless and passive time writer control circuit shown in FIG. 1
Road schematic diagram；
Fig. 9 is the structural schematic diagram for the twin coil wireless and passive time writer that one embodiment of the invention provides.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1, the circuit for the twin coil wireless and passive time writer control circuit that first embodiment of the invention provides shows
It is intended to, for ease of description, only the parts related to this embodiment are shown, and details are as follows:
Twin coil wireless and passive time writer control circuit in the present embodiment, including first coil 40, the second coil 50, energy
Measure extraction module 100, power supply module 200 and output signal generation module 300, first coil 40 and Energy extraction module 100
Connection, the output end of Energy extraction module 100 are connect with power supply module 200, and the output end and output signal of power supply module 200 produce
Raw module 300 connects, and output signal generation module 300 is connect with the second coil 50, and first coil 40 is set as receiving input letter
Number, the second coil 50 is set as transmitting output signal, and Energy extraction module 100 is set as extracting energy from transmission signal and turn
It is changed to DC voltage, power supply module 200 is set as switching to DC voltage into target voltage, and output signal generation module 300 is arranged
For target voltage is converted to output signal and by externally emitting output signal to the second coil 50.
It should be understood that the signal of coil-induced generation can be converted to DC voltage by having by Energy extraction module 100
Device or circuit of one or more kinds of combination functions etc. are constituted；Power supply module 200 can have DC voltage conversion function
Device or chip etc. constitute, such as DC-DC conversion chip；Output signal generation module 300 can be by have will be not outer
Add pumping signal, the composition such as circuit or chip of output signal, such as self-oscillation are voluntarily generated according to the voltage of input
Circuit.
In order to make it easy to understand, the working principle of the twin coil wireless and passive time writer control circuit of summary the present embodiment is such as
Under:
Step 1: first coil 40 receives extraneous input signal, and input signal can be high frequency power signals；
Step 2: Energy extraction module 100 is passed through energy by obtaining energy with the modes such as 40 resonance of first coil
Rectification, filtering etc. are converted to steady dc voltage and store；
Step 3: the DC voltage that energy extraction module 100 provides is converted to preset target voltage by power supply module 200
And it exports；
Step 4: the target voltage is converted to output signal and passes through the second coil by output signal generation module 300
50 launch outward output signal, and output signal can be continual, amplitude stability, the pressure-dependent sine of frequency
Wave signal.
The external world in above-mentioned steps can be the antenna plate being mutually matched with time writer, the power letter that antenna plate emits
It number is given to first coil 40, antenna plate is in the output signal for having received the sending of twin coil wireless and passive time writer control circuit
Afterwards, antenna plate is by amplifying the processing such as integral, and the unlike signal Strength co-mputation received by different coils to signal
Actual physics coordinate of the time writer in antenna plate calculates time writer by calculating the frequency of output signal of time writer transmitting
True pressure sensitivity, finally, the host computer of antenna plate is according to the true of actual physics coordinate of the time writer in antenna plate and time writer
The real true person's handwriting of pressure sensitivity data convert, wherein time writer be include twin coil wireless and passive time writer in the present embodiment
The writing pencil of control circuit.
Twin coil wireless and passive time writer control circuit in the present embodiment is served only for receiving input signal by being added
First coil 40 and the second coil 50 for being served only for transmitting output signal, to ensure that transmitting signal and reception signal can be same
When and non-interfering progress, avoid the need for constantly toggling transmitting signal and receive the process of signal, to solve
Transmitting jitter, working efficiency present in traditional technical solution are low, signal processing difficulty is big and anti-interference ability
The problem of difference.
Referring to Fig. 2, in one embodiment, Energy extraction module 100 include: resonant element 110, rectification unit 120,
Voltage regulation unit 130 and energy-storage units 140, resonant element 110 are connect with first coil 40, the input terminal of rectification unit 120 with
Resonant element 110 connects, and the input terminal of voltage regulation unit 130 connect with the output end of rectification unit 120, energy-storage units 140 it is defeated
Enter end to connect with the output end of voltage regulation unit 130, institute's resonant element 110 is set as extracting the energy of input signal and exports exchange
Electricity, rectification unit 120 are set as converting alternating current to direct current, and direct current electricity output is constant by the setting of voltage regulation unit 130
DC voltage, energy-storage units 140 are set as the DC voltage that storage voltage regulation unit 130 exports.
It should be understood that the resonant element 110 in the present embodiment can be by a kind of or more between resistance, inductance and capacitor
Kind device is constituted, such as series resonance, parallel resonance, LC resonance or RLC resonance etc.；Rectification unit 120 can be whole for full-bridge
Stream or Half bridge rectifier；Voltage regulation unit 130 can be constituted using the component or chip etc. with voltage stabilizing function；Energy-storage units
140 include one or more storage capacitor.
Referring to Fig. 3, in one embodiment, resonant element 110 includes the first shunt capacitance array 111, first is in parallel
The first end of capacitor array 111 is connect with the first output end of first coil 40, the second end of the first shunt capacitance array 111 with
The second output terminal of first coil 40 connects.
It should be understood that the first shunt capacitance array 111 includes at least one capacitor, when the first shunt capacitance array 111 includes
Two and when more than two capacitors, each capacitor is paralleling model；The first shunt capacitance in Fig. 3, in the present embodiment
Array 111 includes mainly the 4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6 and the 7th capacitor C7, the 4th capacitor C4, the
Five capacitor C5, the 6th capacitor C6 and the 7th capacitor C7 can be polarity free capacitor, such as polyester capacitance or metallized polyimide third
Alkene capacitor；The first shunt capacitance array 111 in the present embodiment further comprise with the concatenated first switch S1 of the 5th capacitor C5, with
The concatenated second switch S2 of 6th capacitor C6 and with the concatenated third switch S3 of the 7th capacitor C7, wherein each switch can be with
It is gated according to the practical resonance demand of different time writers or the same time writer of corresponding different antennae.
Referring to Fig. 4, in one embodiment, rectification unit 120 includes first diode D1, the second diode D2, the
The anode of three diode D3 and the 4th diode D4, first diode D1 and the anode of the second diode D2 are connected to ground altogether, the
The cathode of one diode D1 and the anode of the 4th diode D4 connect the first input end as rectification unit 120, the four or two pole altogether
The cathode of pipe D4 and the cathode of third diode D3 connect the output end as rectification unit 120, the cathode of the second diode D2 altogether
The second input terminal as rectification unit 120 is connect altogether with the anode of third diode D3.
Referring to Fig. 5, in one embodiment, voltage regulation unit 130 includes the second shunt capacitance array 131, first resistor
R1, second resistance R2, the 5th diode D5 and first switch tube Q1, the first end of the second shunt capacitance array 131, the first electricity
The input terminal of the first end and first switch tube Q1 that hinder R1 is connected to the output end of rectification unit 120, the second shunt capacitance array altogether
The first end of 131 second end, the anode of the 5th diode D5 and second resistance R2 is connected to ground altogether, and the 5th diode D5's is negative
Pole and the second end of first resistor R1 are connected to the control terminal of first switch tube Q1, the output end and second resistance of first switch tube Q1
The second end of R2 connects the output end as voltage regulation unit 130 altogether, it should be understood that the output end of voltage regulation unit 130 is also Energy extraction mould
The output end of block 100.
The 5th diode D5 in the present embodiment is zener diode, and the first switch tube Q1 in the present embodiment is three poles
Pipe, wherein the input terminal of first switch tube Q1 is the collector of triode, and the control terminal of first switch tube Q1 is the base of triode
Pole, the output end of first switch tube Q1 are the emitter of triode；It should be understood that in other embodiments, first switch tube Q1 can
Think metal-oxide-semiconductor or IGBT thyristor etc..
It should be understood that the second shunt capacitance array 131 includes at least one capacitor, when the second shunt capacitance array 131 includes
Two and when more than two capacitors, each capacitor is paralleling model；The second shunt capacitance in Fig. 5, in the present embodiment
Array 131 includes mainly the 8th capacitor C8, the 9th capacitor C9, the tenth capacitor C10 and the 11st capacitor C11, the 8th capacitor
C8, the 9th capacitor C9, the tenth capacitor C10 and the 11st capacitor C11 can be filter capacitor；Second in the present embodiment is in parallel
Capacitor array 131 further comprises and the concatenated 4th switch S4 of the 9th capacitor C9 and concatenated 5th switch S5 of the tenth capacitor C10
And with the concatenated 6th switch S6 of the 11st capacitor C11, wherein each switch can according to rectification unit 120 export it is straight
The filtering demands of galvanic electricity gate.
Referring to Fig. 6, in one embodiment, energy-storage units 140 include third shunt capacitance array 141, third is in parallel
The first end of capacitor array 141 is connect with the output end of voltage regulation unit 130, the second end ground connection of third shunt capacitance array 141,
It should be understood that third shunt capacitance array 141 include at least one capacitor, when third shunt capacitance array 141 include two and
When more than two capacitors, each capacitor is paralleling model；In Fig. 6, the third shunt capacitance array 141 in the present embodiment is main
It include the 12nd capacitor C12, the 13rd capacitor C13, the 14th capacitor C14 and the 15th capacitor C15, the 12nd capacitor
C12, the 13rd capacitor C13, the 14th capacitor C14 and the 15th capacitor C15 can be storage capacitor；In the present embodiment
Three shunt capacitance arrays 141 are further comprised connects with the concatenated 7th switch S7 of the 13rd capacitor C13, with the 14th capacitor C14
The 8th switch S8 and with the concatenated 9th switch S9 of the 15th capacitor C15.
Referring to Fig. 7, in one embodiment, power supply module 200 include: the first inductance L1, voltage conversion chip U1 with
And the 4th shunt capacitance array 210, the first end of the first inductance L1 are connected to the output end connection of Energy extraction module 100, first
The second end of inductance L1 is connect with the power end SW of voltage conversion chip U1, and enable end EN and the energy of voltage conversion chip U1 mentions
The output end of modulus block 100 connects, and the output end OUT and the 4th shunt capacitance array 210 of voltage conversion chip U1 connects conduct altogether
The output end of power supply module 200, the feedback end FB and the 4th shunt capacitance array 210 of voltage conversion chip U1 are connected to ground altogether.
It should be understood that the 4th shunt capacitance array 210 includes at least one capacitor, when the 4th shunt capacitance array 210 includes
Two and when more than two capacitors, each capacitor is paralleling model；The 4th shunt capacitance in Fig. 7, in the present embodiment
Array 210 includes mainly the 16th capacitor C16, the 17th capacitor C17, the 18th capacitor C18 and the 19th capacitor C19,
16th capacitor C16, the 17th capacitor C17, the 18th capacitor C18 and the 19th capacitor C19 are to pressure stabilizing, energy storage etc.；This
The 4th shunt capacitance array 210 in embodiment further comprises and concatenated tenth switch of the 17th capacitor C17 and the 18th electricity
Hold concatenated 11st switch of C18 and is switched with the 19th capacitor C19 the concatenated 12nd.
Referring to Fig. 8, in one embodiment, output signal generation module 300 includes first capacitor C1, the second capacitor
C2, third capacitor C3, the 4th capacitor C4,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, second switch
Pipe Q2 and the 5th shunt capacitance array 310, the first end of the 5th shunt capacitance array 310, the first end of the 5th resistance R5 with
And the first end of first capacitor C1 connects the first input end with the output end of power supply module 200 and the second coil 50 altogether, the 5th simultaneously
The second end of connection capacitor array 310 is connected with the input terminal of second switch Q2 with the first end of third capacitor C3, first capacitor
The second end of C1 is grounded, the second end of the 5th resistance R5, the first end of the 6th resistance R6, the first end of the second capacitor C2 and the
The control terminal of two switching tube Q2 connects altogether, and one end of 3rd resistor R3 is connect with the output end of second switch Q2, the second capacitor C2
Second end, second end, the second end of the 4th resistance R4 and the second end of the 4th capacitor C4 of the 6th resistance R6 be connected to altogether ground,
The first end of 4th resistance R4, the first end of the 4th capacitor C4, the second end of third capacitor C3 and 3rd resistor R3 second
End connects altogether.
Second switch Q2 in the present embodiment is triode, wherein the input terminal of second switch Q2 is triode
Collector, the control terminal of second switch Q2 are the base stage of triode, and the output end of second switch Q2 is the transmitting of triode
Pole；It should be understood that in other embodiments, first switch tube Q1 can be other switching tubes with enlarging function.
It should be understood that the 5th shunt capacitance array 310 includes at least one capacitor, when the 5th shunt capacitance array 310 includes
Two and when more than two capacitors, each capacitor is paralleling model；In fig. 8, the 5th shunt capacitance in the present embodiment
Array 310 mainly includes the 20th capacitor C20, the 21st capacitor C21, the electricity of the 22nd capacitor C22 and the 23rd
Hold C23；The 5th shunt capacitance array 310 in the present embodiment is further comprised to be opened with the 21st capacitor C21 the concatenated 13rd
It closes S13, opened with the concatenated 14th switch S14 of the 22nd capacitor C22 and with the 23rd capacitor C23 the concatenated 15th
Close S15.
Output signal generation module 300 in this implementation is by being added the fiveth shunt capacitance battle array in parallel with the second coil 50
Column 310, first capacitor C1, the second capacitor C2, third capacitor C3, the 4th capacitor C4,3rd resistor R3, the 4th resistance R4, the 5th
Resistance R5, the 6th resistance R6 and second switch Q2 form the electricity for having oscillation, amplification, filtering and feedback function
Road, thus the output signal that one amplitude of output is more stable with frequency.It should be understood that the output of output signal generation module 300
The variation proportional to the variation of equivalent inductance of the second coil 50 of the frequency of signal.
Referring to Fig. 9, the second aspect of the embodiment of the present invention provides a kind of twin coil wireless and passive time writer, including pen
Core 10, magnetic core 20, elastomeric element 30 and twin coil wireless and passive time writer control circuit；Wherein, twin coil wireless and passive electricity
Magnetic pen control circuit includes first coil 40, the second coil 50, Energy extraction module 100, power supply module 200 and output letter
Number generation module 300, magnetic core 20 are fixedly connected with pen core 10, and elastomeric element 30 is connect with pen core 10 and magnetic core 20, first coil
40 and second coil 50 be sheathed on magnetic core 20, elastomeric element 30 can be to mobile pen core 10 and magnetic core 20, elastomeric element 30
Compression spring, Energy extraction module 100, power supply module 200 and output signal generation module 300 can be set to control described in Fig. 9
In making sheet 60, the composition and function such as this hair of Energy extraction module 100, power supply module 200 and output signal generation module 300
Bright embodiment in a first aspect, this will not be repeated here.
In the present embodiment, the flexible relative position that can change magnetic core 20 and the second coil 50 of elastomeric element 30, thus
Change the equivalent inductance of the second coil 50, wherein with the variation of equivalent inductance pass proportional to the pressure change of elastomeric element 30
System, at the same output signal generation module 300 generate output signal frequency can with the proportional variation of change rate of equivalent inductance,
That is the frequency relationship proportional to elastomeric element 30 for the output signal that the second coil 50 externally emits, the external world is to receive the second line
The equipment for the output signal that circle 50 externally emits can be informed in using twin coil in real time by the frequency of scaled output signal
True pressure sensitivity when wireless and passive time writer.
The third aspect of the embodiment of the present invention provides a kind of control method of twin coil wireless and passive time writer, the control
Method is applied to twin coil wireless and passive time writer, and the twin coil wireless and passive time writer includes first coil and the second line
Circle, it should be appreciated that twin coil wireless and passive time writer may include that the twin coil of the first aspect offer of the embodiment of the present invention is wireless
Writer be passive electrical magnetic pen control circuit or the twin coil wireless and passive time writer that provides of second aspect for the embodiment of the present invention, the control
Method processed the following steps are included:
Step 1: extraneous input signal is received by first coil；
It should be understood that input signal can be power signal, first coil can be above-mentioned first coil 40.
Step 2: the energy of input signal is obtained；
It should be understood that the energy of input signal can be obtained by modes such as resonance, such as pass through the resonant element in Fig. 3
110 obtain the energy of input signal.
Step 3: it converts energy into steady dc voltage and stores；
It should be understood that steady dc voltage can be converted energy by the modes such as rectifying, filtering, such as pass through rectification
Unit 120, voltage regulation unit 130 convert energy into steady dc voltage, can be by storage capacitor, energy-storage battery etc. to straight
Galvanic electricity pressure is stored.
Step 4: DC voltage is converted into preset target voltage；
It should be understood that DC voltage can be converted to by DC-DC conversion chip or voltage conversion chip etc. preset
Target voltage, such as can be completed by power supply module 200.
Step 5: target voltage is converted into output signal；
It should be understood that target voltage can be converted to output signal by modes such as oscillations, output signal can be one
Continual, amplitude stability, the pressure-dependent sine wave signal of frequency.
Step 6: output signal is launched outward by the second coil.
It should be understood that the second coil can be the second above-mentioned coil 50.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of twin coil wireless and passive time writer control circuit characterized by comprising
First coil, the first coil are set as receiving input signal；
Second coil, second coil are set as transmitting output signal；
Energy extraction module, the Energy extraction module are connect with the first coil, the Energy extraction module be set as from
Energy is extracted in the transmission signal and is converted to DC voltage；
Power supply module, the power supply module are connect with the Energy extraction module, and the power supply module is set as the direct current
Voltage switchs to target voltage；And
Output signal generation module, the output signal generation module are connect with the power supply module and second coil, institute
Output signal generation module is stated to be set as the target voltage being converted to the output signal and by second coil pair
The outer transmitting output signal.
2. twin coil wireless and passive time writer control circuit as described in claim 1, which is characterized in that the Energy extraction mould
Block includes:
Resonant element, the resonant element are connect with the first coil, and institute's resonant element is set as extracting the input signal
Energy and export alternating current；
Rectification unit, the input terminal of the rectification unit are connect with the resonant element, and the rectification unit is set as will be described
Alternating current is converted to direct current；
Voltage regulation unit, the input terminal of the voltage regulation unit are connect with the output end of the rectification unit, the voltage regulation unit setting
It is constant DC voltage by the direct current electricity output；And
Energy-storage units, the input terminal of the energy-storage units are connect with the output end of the voltage regulation unit, the energy-storage units setting
For the DC voltage for storing the voltage regulation unit output.
3. twin coil wireless and passive time writer control circuit as claimed in claim 2, which is characterized in that the resonant element packet
The first shunt capacitance array is included, the first end of the first shunt capacitance array and the first output end of the first coil connect
It connects, the second end of the first shunt capacitance array is connect with the second output terminal of the first coil.
4. twin coil wireless and passive time writer control circuit as claimed in claim 2, which is characterized in that the rectification unit packet
Include first diode, the second diode, third diode and the 4th diode, the anode of the first diode and described the
With being connected to altogether, the anode of the cathode of the first diode and the 4th diode connects altogether as described the anode of two diodes
The first input end of rectification unit, the cathode of the 4th diode and the cathode of the third diode are connect altogether as described whole
The anode of the output end of stream unit, the cathode of second diode and the third diode is connect altogether as the rectification unit
The second input terminal.
5. twin coil wireless and passive time writer control circuit as claimed in claim 2, which is characterized in that the voltage regulation unit packet
Include the second shunt capacitance array, first resistor, second resistance, the 5th diode and first switch tube, the described second electricity in parallel
The first end, the first end of the first resistor and the input terminal of the first switch tube for holding array are connected to the rectification unit altogether
Output end, the second end of the second shunt capacitance array, the positive and described second resistance of the 5th diode
First end is connected to ground altogether, and the cathode of the 5th diode and the second end of the first resistor are connected to the first switch tube
The second end of control terminal, the output end of the first switch tube and the second resistance connects the output as the voltage regulation unit altogether
End.
6. twin coil wireless and passive time writer control circuit as claimed in claim 2, which is characterized in that the energy-storage units packet
Third shunt capacitance array is included, the first end of the third shunt capacitance array is connect with the output end of the voltage regulation unit, institute
State the second end ground connection of third shunt capacitance array.
7. twin coil wireless and passive time writer control circuit as described in claim 1, which is characterized in that the power supply module packet
Include: the first end of the first inductance, voltage conversion chip and the 4th shunt capacitance array, the first inductance is connected to the Energy extraction
The output end of module connects, and the second end of first inductance is connect with the power end of the voltage conversion chip, the voltage
The enable end of conversion chip is connect with the output end of the Energy extraction module, the output end of the voltage conversion chip and described
4th shunt capacitance array connects the output end as the power supply module, the feedback end of the voltage conversion chip and described altogether
Four shunt capacitance arrays are connected to ground altogether.
8. twin coil wireless and passive time writer control circuit as described in claim 1, which is characterized in that the output signal produces
Raw module includes first capacitor, the second capacitor, third capacitor, the 4th capacitor, 3rd resistor, the 4th resistance, the 5th resistance, the 6th
Resistance, second switch and the 5th shunt capacitance array, the first end of the 5th shunt capacitance array, the 5th resistance
First end and the first capacitor first end connect altogether with the output end of the power supply module and second coil
One input terminal, the second end of the 5th shunt capacitance array and the input terminal of the second switch and the third capacitor
First end connection, the second end ground connection of the first capacitor, the first of the second end of the 5th resistance, the 6th resistance
The control terminal at end, the first end of second capacitor and the second switch connects altogether, one end of the 3rd resistor and institute
State the output end connection of second switch, the second end of second capacitor, the second end of the 6th resistance, the 4th electricity
The second end of resistance and the second end of the 4th capacitor are connected to ground, the first end of the 4th resistance, the 4th capacitor altogether
First end, the second end of the third capacitor and the second end of the 3rd resistor connect altogether.
9. a kind of twin coil wireless and passive time writer characterized by comprising
Pen core；
Magnetic core, the magnetic core are fixedly connected with the pen core；
Elastomeric element, the elastomeric element are connect with the pen core and the magnetic core, and the elastomeric element is to the movement pen
Core and the magnetic core；And
Twin coil wireless and passive time writer control circuit as described in claim 1-8 any one, the first coil and institute
It states the second coil and is sheathed on the magnetic core.
10. a kind of control method of twin coil wireless and passive time writer, which is characterized in that the control method is applied to twin coil
Wireless and passive time writer, the twin coil wireless and passive time writer include first coil and the second coil, the control method packet
Include following steps:
Extraneous input signal is received by the first coil；
Obtain the energy of the input signal；
The energy is converted into steady dc voltage and is stored；
The DC voltage is converted into preset target voltage；
The target voltage is converted into output signal；
The output signal is launched outward by second coil.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910425992.5A CN110138062A (en) | 2019-05-21 | 2019-05-21 | Twin coil wireless and passive time writer and its control circuit and control method |
| PCT/CN2019/097304 WO2020232823A1 (en) | 2019-05-21 | 2019-07-23 | Dual-coil wireless passive electromagnetic pen and control circuit and control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910425992.5A CN110138062A (en) | 2019-05-21 | 2019-05-21 | Twin coil wireless and passive time writer and its control circuit and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110138062A true CN110138062A (en) | 2019-08-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910425992.5A Pending CN110138062A (en) | 2019-05-21 | 2019-05-21 | Twin coil wireless and passive time writer and its control circuit and control method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110138062A (en) |
| WO (1) | WO2020232823A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112542036A (en) * | 2020-12-08 | 2021-03-23 | 大力电工襄阳股份有限公司 | High-voltage silicon controlled rectifier wireless trigger equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116610192B (en) * | 2022-02-09 | 2024-04-05 | 荣耀终端有限公司 | Electronic equipment and method for judging presence of handwriting pen |
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| WO2020232823A1 (en) | 2020-11-26 |
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