CN201562263U - Digital board of battery-free wireless pointer assembly and battery-free wireless pointer assembly - Google Patents

Abstract

A digital board of a battery-free wireless pointer assembly and the battery-free wireless pointer assembly are provided. The wireless pointer assembly comprises a receiving coil and a transmitting coil which are wound in an overlapping mode, a power supply circuit and an induction circuit. The digital board comprises a signal processing circuit, a first antenna loop and a second antenna loop.

Description

Digital board of battery-free wireless pointer assembly and battery-free wireless pointer assembly

technical field

The utility model relates to an input device, in particular to a digital board of a battery-free wireless pointer assembly powered by electromagnetic resonance.

Background technique

At present, the digital boards on the market are used together with the wireless pointer assembly. When the wireless pointer assembly touches the digital board, the wireless pointer assembly will generate an electromagnetic field, so that the digital board can use magnetic coupling to calculate the current coordinates of the wireless pointer assembly. position, and then send the coordinate position to the computer.

At present, the power supply required for the operation of the wireless pointer assembly mainly uses two methods to obtain power supply: one is to use a disposable battery for power supply, and the other is to use electromagnetic resonance to obtain power supply. If a disposable battery is used for power supply, the wireless pointer assembly must frequently replace the battery, which is extremely inconvenient and environmentally friendly for users. Therefore, the electromagnetic resonance method is currently the most appropriate power supply method.

However, in the current technology related to the electromagnetic resonance power supply of the wireless pointer component and the digital board, the digital board must emit a large magnetic field, and then the wireless pointer component receives it. When the wireless pointer component accumulates a certain amount of energy, it will be transmitted to the digital board for reception. , This method has the problems of high power consumption of the digital board, complex circuit design, high cost and high electromagnetic field radiation.

Therefore, how to reduce the power consumption of the digital board, simplify the design on the circuit, reduce the cost and price, and improve the problem of excessive electromagnetic field radiation is a problem that the industry is eager to solve.

Utility model content

In view of the above problems, the purpose of this utility model is to provide a digital board of a battery-free wireless pointer assembly, so as to solve the problems existing in the prior art due to the use of electromagnetic resonance power supply.

In order to achieve the above purpose, the utility model discloses a digital board of a battery-free wireless pointer assembly, which includes: a battery-free wireless pointer assembly and a digital board, and is characterized in that the battery-free wireless pointer assembly at least includes:

receiving coil;

A transmitting coil is arranged overlapping with the receiving coil;

A power supply circuit, which is used to wirelessly receive the frequency signal sent by the digital board by using the plurality of receiving coils, and generate electric energy by forming electromagnetic resonance through the frequency signal; and

an inductive circuit for receiving the electric energy generated by the power supply circuit, and generating an inductive signal for transmitting to the digital board through the transmitting coil; and

Wherein the digital board includes at least:

A signal processing circuit, used to generate the frequency signal, and calculate the current coordinate position of the battery-free wireless pointer assembly according to the induction signal sent by the battery-free wireless pointer assembly;

at least one first antenna loop for transmitting the frequency signal; and

At least one second antenna loop is used for wirelessly receiving the induction signal.

In the above-mentioned digital board of the battery-free wireless pointer assembly, the receiving coil is wound outside the transmitting coil.

In the above-mentioned digital board of the battery-free wireless pointer assembly, the transmitting coil is wound outside the receiving coil.

The above-mentioned digital board of the battery-free wireless pointer assembly further includes:

one axis;

Wherein, the receiving coil and the transmitting coil are overlapped and wound on the axis.

In the above-mentioned digital board of the battery-free wireless pointer assembly, the receiving coil is wound outside the axis, and the transmitting coil is wound outside the receiving coil.

In the above-mentioned digital board of the battery-free wireless pointer assembly, the transmitting coil is wound outside the axis, and the receiving coil is wound outside the transmitting coil.

The above-mentioned digital board of the battery-free wireless pointer assembly, wherein the battery-free wireless pointer assembly is a wireless cursor pen or a wireless mouse.

To achieve the above purpose, the utility model also discloses a battery-free wireless pointer assembly, which at least includes:

at least one receiving coil;

A transmitting coil is arranged overlapping with the receiving coil;

A power supply circuit for wirelessly receiving a frequency signal by using the plurality of receiving coils, and generating electric energy by forming electromagnetic resonance with the received frequency signal; and

An inductive circuit is used for receiving the electric energy generated by the power supply circuit, and generating an inductive signal for transmitting the inductive signal through the transmitting coil.

In the battery-free wireless pointer assembly mentioned above, the receiving coil is wound outside the transmitting coil.

In the aforementioned battery-free wireless pointer assembly, wherein the transmitting coil is wound outside the receiving coil.

The above-mentioned battery-free wireless pointer assembly also includes:

one axis;

Wherein, the receiving coil and the transmitting coil are overlapped and wound on the axis.

In the aforementioned battery-free wireless pointer assembly, the receiving coil is wound outside the axis, and the transmitting coil is wound outside the receiving coil.

In the aforementioned battery-free wireless pointer assembly, the transmitting coil is wound outside the axis, and the receiving coil is wound outside the transmitting coil.

The above-mentioned battery-free wireless pointer assembly, wherein, the battery-free wireless pointer assembly is a wireless cursor pen or a wireless mouse.

The utility model has the effect that it can solve the problems existing in the prior art due to the use of electromagnetic resonance power supply.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

FIG. 1 is a schematic diagram of the appearance of a digital board of a battery-free wireless pointer assembly according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a digital board circuit structure of a battery-free wireless pointer assembly according to an embodiment of the present invention;

Fig. 3 is a schematic cross-sectional view of the arrangement relationship between the receiving coil and the transmitting coil according to the first embodiment of the present invention;

4 is a schematic cross-sectional view of the configuration relationship between the receiving coil and the transmitting coil according to the second embodiment of the present invention;

5 is a schematic cross-sectional view of the configuration relationship between the receiving coil and the transmitting coil according to the third embodiment of the present invention;

Fig. 6 is a schematic cross-sectional view of the arrangement relationship between the receiving coil and the transmitting coil according to the fourth embodiment of the present invention.

Among them, reference signs

100 battery-free wireless pointer assembly

110 receiving coil

120 transmitter coil

130 power supply circuit

140 induction circuit

150 axis

200 digital board

210 signal processing circuit

220 first antenna loop

230 second antenna loop

Sf frequency signal

Ss induction signal

P electric energy

L winding shaft

Detailed ways

Below in conjunction with accompanying drawing, structural principle and working principle of the present utility model are specifically described:

Referring to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , a digital board of a battery-free wireless pointer assembly includes a battery-free wireless pointer assembly 100 and a digital board 200 .

The battery-free wireless pointer assembly 100 and the digital pad 200 are used in conjunction with each other.

The battery-free wireless pointer assembly 100 can be a wireless cursor pen or a wireless mouse, but this is not a limitation of the present invention.

Wherein, the battery-free wireless pointer assembly 100 at least includes:

At least one receiving coil 110, but not limited thereto;

a transmitting coil 120, which is arranged overlapping with at least one receiving coil 110;

The power supply circuit 130, which uses the receiving coil 110 to wirelessly receive the frequency signal Sf sent by the digital board 200, and achieves mutual electromagnetic resonance through the frequency signal Sf, so that it can generate the required electric energy P; and

The sensing circuit 140 includes but not limited to a signal generating circuit, which receives the power P of the power supply circuit 130 and generates a sensing signal Ss, and sends the sensing signal Ss to the digital board 200 through the transmitting coil 120 . Wherein, the power supply circuit 130 may include: a rectification circuit electrically connected to the receiving coil 110 . When the receiving coils 110 receive the frequency signal Sf at the same time, the receiving coils 110 will present the same frequency, thereby causing electromagnetic resonance effect to generate energy signals to the rectification circuit. The rectification circuit reuses the energy signal to generate the required power P to supply the power required for the operation of the battery-free wireless pointer assembly 100 .

Wherein, the sensing circuit 140 may include: an oscillating circuit electrically connected to the transmitting coil 120 .

The oscillation circuit maintains its operation by the power P generated by the power supply circuit 130 to generate the sensing signal Ss. The induction signal Ss generated by the oscillation circuit is then transmitted to the digital board 200 by the transmitting coil 120 .

The electronic circuit structure of the power supply circuit 130 or the sensing circuit 140 is not the object of the present invention, so it will not be described in detail.

Digital pad 200 includes at least:

The signal processing circuit 210 is used to generate the frequency signal Sf, and calculate the current coordinate position of the battery-free wireless pointer assembly 100 according to the sensing signal Ss sent by the battery-free wireless pointer assembly 100;

at least one first antenna loop 220 for transmitting the frequency signal Sf; and

At least one second antenna loop 230 is used for wirelessly receiving the sensing signal Ss.

Referring to FIG. 3 , here, the receiving coils 110 may be wound outside the transmitting coil 120 . Or, referring to FIG. 4 , the transmitting coil 120 can be wound outside the receiving coils 110 .

The overlappingly wound receiving coil 110 and transmitting coil 120 may be disposed inside the battery-free wireless pointer assembly 100 and located on one side of the battery-free wireless pointer assembly 100 for contacting the digital pad 200 .

Taking the wireless cursor pen as an example, the overlappingly wound receiving coil 110 and the transmitting coil 120 can be disposed on the inner side of the wireless cursor pen near the end of the pen tip.

Taking a wireless mouse as an example, the overlappingly wound receiving coil 110 and transmitting coil 120 can be arranged on the inner side of the wireless mouse near the bottom.

The winding axis L of the overlappingly wound receiving coil 110 and transmitting coil 120 may stand inside the battery-free wireless pointer assembly 100 . Here, the winding axis L refers to a virtual imaginary axis, not an actual entity.

Taking the wireless cursor pen as an example, the winding axis L of the overlappingly wound receiving coil 110 and the transmitting coil 120 may extend in the same direction as the wireless cursor pen.

Taking a wireless mouse as an example, the winding axis L of the overlappingly wound receiving coil 110 and the transmitting coil 120 can stand upright on the bottom of the wireless mouse.

Furthermore, referring to FIG. 5 and FIG. 6 , an axis 150 can be used as a winding support for the receiving coil 110 and the transmitting coil 120 .

Here, referring to FIG. 5 , the transmitting coil 120 may be wound on the axis 150 first, and then the receiving coil 110 is wound on the outside of the transmitting coil 120 .

Furthermore, referring to FIG. 6 , the receiving coil 110 can be wound on the axis 150 first, and then the transmitting coil 120 can be wound on the outside of the receiving coil 110 .

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (14)

1. digiboard of exempting from battery wireless indicator assembly, comprising: one exempts from a battery wireless indicator assembly and a digiboard, it is characterized in that, and this is exempted from battery wireless indicator assembly and comprises at least:

At least one receiving coil;

One transmitting coil is provided with overlappingly with this receiving coil;

One power supply circuit in order to the frequency signal that utilizes these a plurality of these digiboards of receiving coil wireless receiving to be sent, and forms electromagentic resonance and produces electric energy by this frequency signal; And

One sensor circuit in order to receiving this electric energy that this power supply circuit produces, and produces an induced signal to be transmitted to this digiboard via this transmitting coil; And

Wherein this digiboard comprises at least:

One signal processing circuit in order to producing this frequency signal, and is exempted from this induced signal that battery wireless indicator assembly sent according to this and is calculated this and exempt from the present coordinate position of battery wireless indicator assembly;

At least one first antenna loop is in order to launch this frequency signal; And

At least one second antenna loop is in order to this induced signal of wireless receiving.

2. digiboard of exempting from battery wireless indicator assembly according to claim 1 is characterized in that this receiving coil is wound in the outside of this transmitting coil.

3. digiboard of exempting from battery wireless indicator assembly according to claim 1 is characterized in that this transmitting coil is wound in the outside of this receiving coil.

4. digiboard of exempting from battery wireless indicator assembly according to claim 1 is characterized in that, also comprises:

One axle center;

Wherein, this receiving coil and this transmitting coil are overlapping is wound on this axle center.

5. digiboard of exempting from battery wireless indicator assembly according to claim 4 is characterized in that this receiving coil is wound in the outside in this axle center, and this transmitting coil is wound in the outside of this receiving coil.

6. digiboard of exempting from battery wireless indicator assembly according to claim 4 is characterized in that this transmitting coil is wound in the outside in this axle center, and this receiving coil is wound in the outside of this transmitting coil.

7. digiboard of exempting from battery wireless indicator assembly according to claim 1 is characterized in that, this exempts from battery wireless indicator assembly is a wireless cursor pen or a wireless mouse.

8. exempt from battery wireless indicator assembly for one kind, it is characterized in that, comprise at least:

At least one receiving coil;

One transmitting coil is provided with overlappingly with this take-up circle;

One power supply circuit, in order to utilizing this a plurality of receiving coil wireless receiving one frequency signals, and by this frequency signal formation electromagentic resonance that receives and produce electric energy; And

One sensor circuit in order to receiving this electric energy that this power supply circuit produces, and produces an induced signal via this transmitting coil this induced signal is launched.

9. the battery wireless indicator assembly of exempting from according to claim 8 is characterized in that this receiving coil is wound in the outside of this transmitting coil.

10. the battery wireless indicator assembly of exempting from according to claim 8 is characterized in that this transmitting coil is wound in the outside of this receiving coil.

11. the battery wireless indicator assembly of exempting from according to claim 8 is characterized in that, also comprises:

One axle center;

Wherein, this receiving coil and this transmitting coil are overlapping is wound on this axle center.

12. the battery wireless indicator assembly of exempting from according to claim 11 it is characterized in that this receiving coil is wound in the outside in this axle center, and this transmitting coil is wound in the outside of this receiving coil.

13. the battery wireless indicator assembly of exempting from according to claim 11 it is characterized in that this transmitting coil is wound in the outside in this axle center, and this receiving coil is wound in the outside of this transmitting coil.

14. the battery wireless indicator assembly of exempting from according to claim 8 is characterized in that this exempts from battery wireless indicator assembly is a wireless cursor pen or a wireless mouse.

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