TW201316642A - Selection method for sharing induction module of near field communication and cordless charging , and selection circuit thereof - Google Patents

Abstract

The present invention provides a selection method for sharing induction module of near field communication and cordless charging and a selection circuit thereof. The method includes: preparing an induction module, on which is configured with a first coil and a second coil for inductively receiving a first frequency signal or a second frequency signal, respectively; determining whether the induction module inductively received the first frequency signal or the second frequency signal; and, controlling by the first frequency signal to open a first chip unit to be electrically connected to the first coil, or controlling by the second frequency signal to open a second chip unit to be electrically connected to the second coil, so as to achieve the purpose of integrating both the near field communication and the cordless charging functions onto a portable electronic device.

Description

Near field communication and wireless charging sharing sensing module selection method and selection circuit thereof

The invention relates to a method for selecting a near field communication and a wireless charging sharing sensing module and a selection circuit thereof, in particular to a method for integrating a wireless charging (WLC) sensing module and a near field in a portable device. The Near Field Communication (NFC) sensing module is an integrated sensing module selection method and selection circuit.

The new type of wireless charging (WLC) technology enables portable devices to use no power lines, but can directly transmit power to the portable devices to charge the batteries by means of electromagnetic induction. As shown in FIG. 1 , it is a schematic diagram of a wireless charging transmission, including a power transmission module 10 and a power receiving module 20 . The power transmission sensing module 10 has a transmitting end coil 11 and a transmitting end core plate. 12, the power receiving sensing module 20 also has a receiving end coil 21 and a receiving end core plate 22. When the power receiving module 20 is close to the power transmitting module 10, a current flows through the transmitting end coil 11 of the power receiving module 10 to generate a magnetic field, so that the receiving end coil 21 of the power receiving sensing module 20 senses the magnetic field. Current.

In addition, the combination of Near Field Communication (NFC) in portable electronic devices is also receiving considerable attention. Near Field Communication (NFC) enables portable devices to perform contactless point-to-point communication, providing extremely convenient connection methods. Communicate quickly and easily.

Near Field Communication (NFC) technology evolved from the integration of contactless radio frequency identification (RFID) and interconnect technology. In the current field of near field communication (NFC) applications, there are proximity cards used in the MRT system. As long as the proximity card is close to the MRT ticket gate, it can be quickly cleared, and the induction time is faster than the general non-contact wafer card, which is quite useful for high-input traffic stations.

Therefore, some manufacturers have proposed to embed a near field communication chip in a portable electronic device such as a mobile phone. Therefore, the integration of wireless charging (WLC) and near field communication (NFC) functions of the portable electronic device will be an inevitable trend in the future.

However, the two circuits of Near Field Communication (NFC) and Wireless Charge Transmission (WLC) are completely different, and they are independent. They must use their respective induction coil modules to receive different signals. This is becoming more and more portable electronic devices. In terms of light and short internal space, integration is quite difficult.

The inventor of the present invention found that both the near field communication (NFC) and the wireless charging transmission (WLC) technologies are short-range inductive transmission signals, so the coil sensing modules are required, and the two sensing modules are not used at the same time. And the sensing frequency of the two sensing modules is also different, so a sensing module integrated with Near Field Communication (NFC) and Wireless Charging (WLC) is designed to receive NFC and wireless charging. The (WLC) signal is then automatically switched by a set of line selection circuits.

The object of the present invention is to provide a method for selecting a near field communication and a wireless charging sharing sensing module and a selection circuit thereof, and integrating the sensing modules of two different frequency signals of near field communication (NFC) and wireless charging (WLC). In order to reduce the area occupied by the induction coil in the portable electronic device, in order to achieve the purpose of integrating the two functions into the same portable electronic device.

The main technical feature of the present invention is to provide a method for selecting a near field communication and a wireless charging sharing sensing module, comprising: providing a sensing module, wherein a first coil and a second coil are disposed on the sensing unit a first frequency signal or a second frequency signal; determining that the sensing module is inductively receiving the first frequency signal or the second frequency signal; and controlling to open a first wafer unit electrically connected to the first frequency signal The first coil, or the second frequency unit is controlled to be electrically connected to the second coil according to the second frequency signal.

A second technical feature of the present invention is to provide a method for selecting a near field communication and a wireless charging sharing sensing module, comprising: providing a sensing module, wherein a first coil and a second coil are disposed on the sensing unit; Receiving a first frequency signal or a second frequency signal; preparing a line selection unit; determining that the sensing module senses receiving the first frequency signal or the second frequency signal; and controlling the line selection according to the first frequency signal The unit selects a first wafer unit electrically connected to the first coil; or controls the line selection unit to select a second wafer unit to be electrically connected to the second coil according to the second frequency signal.

A further technical feature of the present invention is to provide a method for selecting a near field communication and a wireless charging sharing sensing module, comprising: preparing a sensing module, wherein a first coil and a second coil are disposed on the sensing unit; Receiving a first frequency signal and a second frequency signal; preparing a line selection unit; determining that the sensing module senses receiving the first frequency signal or the second frequency signal; and controlling the line selection according to the first frequency signal The unit selects a third wafer unit electrically connected to the first coil; or controls the line selection unit to select the third wafer unit to be electrically connected to the second coil according to the second frequency signal.

Another technical feature of the present invention is to provide a selection circuit for a near field communication and a wireless charging sharing sensing module, comprising: a sensing module, which is provided with a first coil and a second coil, which can respectively receive and receive a first frequency signal or a second frequency signal; a first wafer unit electrically connecting the first coil; a second wafer unit electrically connecting the second coil; and a central processing unit electrically connecting the first wafer unit and the first The two wafer unit controls to open a first wafer unit electrically connected to the first coil or control to open a second wafer unit to be electrically connected to the second coil.

Another technical feature of the present invention is to provide a selection circuit for a near field communication and a wireless charging sharing sensing module, comprising: a sensing module, which is provided with a first coil and a second coil, which can respectively receive and receive a first frequency signal or a second frequency signal; a line selection unit; a first chip unit can be electrically connected to the first coil through the line selection unit; and a second chip unit can be electrically connected to the line selection unit through the line selection unit The second coil; and a central processing unit controlling the line selection unit to select the first wafer unit to be electrically connected to the first coil, or to control the line selection unit to select the second wafer unit to be electrically connected to the second coil.

A further feature of the present invention is to provide a selection circuit for a near field communication and a wireless charging sharing sensing module, comprising: a sensing module, wherein a first coil and a second coil are disposed, respectively, and can be separately received and received a first frequency signal or a second frequency signal; a line selection unit; a third chip unit electrically connected to the first coil or the second coil through the line selection unit; and a central processing unit for controlling the line The selection unit selects the third wafer unit to be electrically connected to the first coil or to the second coil.

The detailed description of the present invention and the accompanying drawings are not to be construed as limiting the invention.

Referring to FIG. 2, it is a first embodiment selection circuit of the near field communication and wireless charging sharing sensing module of the present invention. The selection circuit 30 of the first embodiment includes a sensing module 31 and a first wafer unit. 32. A second chip unit 33 and a central processing unit 34, wherein the sensing module 31 is provided with a first coil 311 and a second coil 312, each of which is respectively provided with two lead wires, which can respectively receive and receive a first chip. A frequency signal or a second frequency signal, and one of the first lead wires 311 and one of the second lead wires 312 are electrically connected to each other as a common terminal (not shown). Since the two sets of coil structures of the sensing module are not the focus of the present invention, they will not be described again.

The first chip unit 32 is electrically connected to the first coil 311 to capture the first frequency signal; and the second wafer unit 33 is electrically connected to the second coil 312 to capture the second frequency signal; The central processing unit 34 is electrically connected to the first chip unit 32 and the second chip unit 33 for determining that the sensing module 31 senses the first frequency signal or the second frequency signal, and controls the opening of a first wafer unit 32. Electrically connected to the first coil 311, or controlled to open a second wafer unit 33 electrically connected to the second coil 312.

The first frequency unit 32 can be a near field communication signal, and the first chip unit 32 is a near field communication chip (IC), which can be processed after the near field communication signal is obtained, and the second frequency signal can be processed. For the wireless power signal, and the second chip unit 33 is a wireless charging chip (IC), the wireless power signal can be extracted and converted into a DC power source, and a battery 36 is performed by a battery charging chip (IC) 35. Charging.

As shown in FIG. 3 , it is a schematic flowchart of a method for selecting a first embodiment of the common sensing module of the present invention. First, the sensing module 31 is disposed on the first coil 311 and the second coil 312 (S110). The first frequency signal or the second frequency signal may be separately received by the central processing unit 34. The central processing unit 34 determines that the sensing module 31 senses the first frequency signal or the second frequency signal (S120); When the central processing unit 34 determines that the first frequency signal is, the control turns on the first wafer unit 32 to be electrically connected to the first coil 311 (S130) to capture the first frequency signal, or the central processing unit. When it is determined that the second frequency signal is 34, the control turns on a second wafer unit 33 electrically connected to the second coil 312 (S140) to capture the second frequency signal.

Referring to FIG. 4, it is a schematic diagram of a selection circuit of a second embodiment of the shared sensing module of the present invention. The selection circuit 30 of the second embodiment of the present invention includes a sensing module 31, a line selecting unit 37, and a first A first unit coil 311 and a second coil 312 are disposed on the sensing module 31, and each of the two is provided with two lead wires respectively. Receiving a first frequency signal or a second frequency signal; wherein the line selection unit 37 is provided with two selection ends 371, 372 electrically connected to the first coil 311 and the second coil 312, respectively, and further provided with a common terminal 373 .

The first chip unit 32 is electrically connected to the common terminal 373 of the line selection unit 37, and is electrically connected to the first coil 311 through the line selection unit 37 to capture the first frequency signal; wherein the second chip The unit 33 is also electrically connected to the common terminal 373 of the line selection unit 37, and is electrically connected to the second coil 312 through the line selection unit 37 to capture the second frequency signal.

The central processing unit 34 is electrically connected to the first chip unit 32 and the second chip unit 33 for determining that the sensing module 31 senses the first frequency signal or the second frequency signal, and controls the line selecting unit 37. The first wafer unit 32 is selected to be electrically connected to the first coil 311, or the line selection unit 37 is controlled to select the second wafer unit 33 to be electrically connected to the second coil 312.

The first frequency unit 32 is a near field communication signal, and the first chip unit 32 is a near field communication chip (IC), and the near field communication signal can be captured and processed, and the second frequency signal is processed. The wireless power signal can be the wireless power chip, and the second chip unit 33 is a wireless charging chip (IC). The wireless power signal can be extracted and converted into a DC power source, and a battery charging chip (IC) 35 is used to connect a battery 36. Charge it.

In this embodiment, one of the lead wires of the first coil 311 and one of the lead wires of the second coil 312 are electrically connected to each other as a common terminal 374, and the first wafer unit 32 and the second wafer unit. Each of the common terminals 374 of 33 is electrically connected, such as a ground terminal.

Referring to FIG. 5, it is a schematic flowchart of a method for selecting a second embodiment of the shared sensing module of the present invention. The second embodiment of the present invention first provides the sensing module 31, and the first coil is disposed thereon. 311 and the second coil 312 (S210), respectively, may receive a first frequency signal or a second frequency signal; the line selection unit 37 is provided (S220), and the first coil 311 or the first The second coil 312; then the central processing unit 34 determines that the sensing module 31 senses the first frequency signal or the second frequency signal (S230); finally, the central processing unit 34 determines that the first frequency signal is Controlling the line selection unit 37 to select the first wafer unit 32 to be electrically connected to the first coil 311 (S240) to capture the first frequency signal; or the central processing unit 34 determines that the second In the case of the frequency signal, the line selection unit 37 is controlled to select a second wafer unit 33 electrically connected to the second coil 312 (S250) to capture the second frequency signal.

FIG. 6 is a schematic diagram of a selection circuit of a third embodiment of the shared sensing module of the present invention. The third embodiment of the present invention includes a sensing module 31, a line selecting unit 37, and a third chip. The unit 38 and a central processing unit 34, wherein the first module 311 and the second coil 312 are disposed on the sensing module 31, and two lead wires are respectively disposed respectively to respectively receive and receive a first frequency signal or Second frequency signal.

The line selection unit 37 is provided with two selection ends 371, 372 electrically connected to the first coil 311 and the second coil 312, respectively, and further provided with a common terminal 373; and the third wafer unit 38 is electrically connected to the line selection unit 37. The common terminal 373 can be electrically connected to the first coil 311 or the second coil 312 through the line selection unit 37 to capture the first frequency signal or the second frequency signal.

The central processing unit 34 is electrically connected to the third chip unit 38 for determining that the sensing module 31 senses the first frequency signal or the second frequency signal, and controls the line selecting unit 37 to select the third wafer unit. 38 is electrically connected to the first coil 311 or electrically connected to the second coil 312.

The first frequency signal may be a near field communication signal (NFC), and the second frequency signal may be the wireless power signal (WLC), and the third chip unit 38 is a near field communication and wireless charging dual function. Wafer (IC).

In this embodiment, one of the lead wires of the first coil 311 and one of the lead wires of the second coil 312 are electrically connected to each other as a common terminal 374, and a common terminal 374 of the third wafer unit 38. Electrical connection, such as ground.

FIG. 7 is a schematic flowchart of a method for selecting a third embodiment of the shared sensing module of the present invention. The third embodiment of the present invention first provides the sensing module 31, and the first coil is disposed thereon. 311 and the second coil 312 (S310), respectively, receiving and receiving the first frequency signal and the second frequency signal; preparing the line selecting unit 37 (S320) for selectively connecting to the first coil 311 or the The second coil 312.

Then, the central processing unit 34 determines that the sensing module 31 senses the first frequency signal or the second frequency signal (S330); when the central processor 34 determines that the first frequency signal is, the line is controlled. The selecting unit 37 selects a third wafer unit 38 electrically connected to the first coil 311 (S340) to capture the first frequency signal; or when the central processing unit 34 determines that the second frequency signal is, the line is controlled. The selecting unit 37 selects the third wafer unit 38 to be electrically connected to the second coil 312 (S350) to capture the second frequency signal.

The present invention is capable of providing a design that is quite different from the prior art by the above-mentioned disclosed technology, which can improve the overall use value, and is not found in the publication or public use before the application, and has already met the requirements of the invention patent. , 提出 filed an invention patent application in accordance with the law.

10. . . Power transmission module

11. . . Transmitting coil

12. . . Transfer end core plate

20. . . Power receiving module

twenty one. . . Receiving coil

twenty two. . . Receiving end core plate

30. . . Selection circuit

31. . . Sensor module

311. . . First coil

312. . . Second coil

32. . . First wafer unit

33. . . Second wafer unit

34. . . Central processing unit

35. . . Battery charging chip

36. . . battery

37. . . Line selection unit

371. . . Selective side

372. . . Selective side

373. . . Common terminal

374. . . Common end

38. . . Third wafer unit

Figure 1 is a schematic diagram of a wireless charging transmission;

2 is a selection circuit of a first embodiment of the shared sensing module of the present invention;

3 is a schematic flow chart of a method for selecting a first embodiment of a shared sensing module according to the present invention;

4 is a schematic diagram of a selection circuit of a second embodiment of the shared sensing module of the present invention;

5 is a schematic flow chart of a method for selecting a second embodiment of the shared sensing module of the present invention;

6 is a schematic diagram of a selection circuit of a third embodiment of the shared sensing module of the present invention;

FIG. 7 is a schematic flow chart of a selection method of a third embodiment of the shared sensing module of the present invention.

30. . . Selection circuit

31. . . Sensor module

311. . . First coil

312. . . Second coil

32. . . First wafer unit

33. . . Second wafer unit

34. . . Central processing unit

35. . . Battery charging chip

36. . . battery

Claims (30)

A method for selecting a near-field communication (NFC) and a wireless charging (WLC) shared sensing module includes: providing a sensing module, wherein a first coil and a second coil are disposed, respectively, and respectively sensing and receiving a first a frequency signal or a second frequency signal; determining that the sensing module is inductively receiving the first frequency signal or the second frequency signal; and controlling to open a first wafer unit electrically connected to the first coil according to the first frequency signal The first frequency signal is captured or controlled to be electrically connected to the second coil by the second frequency signal to capture the second frequency signal. The method for selecting a near field communication and a wireless charging sharing sensing module according to the first aspect of the invention, wherein the first coil and the second coil are respectively provided with two lead wires. The method for selecting a near field communication and wireless charging sharing sensing module according to claim 2, wherein one of the first coils and one of the second coils are electrically connected to each other. Shared end. The method for selecting a near field communication and wireless charging sharing sensing module according to claim 1, wherein the first frequency signal is a near field communication signal, and the first chip unit is a near field communication chip ( IC), the second frequency signal is the wireless power signal, and the second chip unit is a wireless charging chip (IC). The method for selecting a near field communication and a wireless charging sharing sensing module according to the first aspect of the patent application, wherein in the step of determining the sensing module, the central processing unit (CPU) determines the sensing module The first frequency signal or the second frequency signal is received. The method for selecting a near field communication and a wireless charging sharing sensing module according to the first aspect of the patent application, wherein the step of determining the sensing module is controlled by a central processing unit (CPU) to turn on the first chip. The unit is electrically connected to the first coil or the second wafer unit is electrically connected to the second coil. A method for selecting a near-field communication and a wireless charging shared sensing module includes: providing a sensing module, wherein a first coil and a second coil are disposed, respectively, for sensing a first frequency signal or a second frequency a signal selection unit, optionally connected to the first coil or the second coil; determining that the sensing module receives the first frequency signal or the second frequency signal; and the first frequency signal Controlling the line selection unit to select a first chip unit electrically connected to the first coil to capture the first frequency signal; or controlling the line selection unit to select a second wafer unit to be electrically connected to the second frequency signal according to the second frequency signal a second coil to capture the second frequency signal. The method for selecting a near field communication and a wireless charging sharing sensing module according to claim 7 , wherein the first coil and the second coil are respectively provided with two lead wires. The method for selecting a near field communication and wireless charging sharing sensing module according to claim 8 , wherein one of the first coils and one of the second coils are electrically connected to each other. Shared end. The method for selecting a near field communication and wireless charging sharing sensing module according to claim 7 , wherein the first frequency signal is a near field communication signal, and the first chip unit is a near field communication chip ( IC), the second frequency signal is the wireless power signal, and the second chip unit is a wireless charging chip (IC). The method for selecting a near field communication and a wireless charging sharing sensing module according to claim 7 is the method for determining the sensing module, wherein the sensing module is determined by a central processing unit (CPU). The first frequency signal or the second frequency signal is received. The method for selecting a near field communication and a wireless charging sharing sensing module according to claim 7, wherein in the step of controlling the line selecting unit, the line selecting unit is controlled by a central processing unit (CPU). The first wafer unit is electrically connected to the first coil, or the second wafer unit is selected to be electrically connected to the second coil. A method for selecting a near-field communication and a wireless charging sharing sensing module includes: providing a sensing module, wherein a first coil and a second coil are disposed, respectively, for sensing and receiving a first frequency signal and a second frequency a signal selection unit is configured to selectively connect to the first coil or the second coil; and determine that the sensing module receives the first frequency signal or the second frequency signal; and according to the first frequency The signal control unit selects a third wafer unit electrically connected to the first coil to capture the first frequency signal; or controls the line selection unit to select the third wafer unit to be electrically connected to the second frequency signal according to the second frequency signal The second coil is configured to capture the second frequency signal. The method for selecting a near field communication and a wireless charging sharing sensing module according to claim 13 , wherein the first coil and the second coil are respectively provided with two lead wires. The method for selecting a near field communication and wireless charging sharing sensing module according to claim 14, wherein one of the first coils and one of the second coils are electrically connected to each other. Shared end. The method for selecting a near field communication and wireless charging sharing sensing module according to claim 13 , wherein the first frequency signal is a near field communication signal, and the second frequency signal is the wireless power signal, and The third wafer unit is a near field communication and wireless charging dual function chip (IC). The method for selecting a near field communication and a wireless charging sharing sensing module according to claim 13 is the method for determining the sensing module, wherein the sensing module is determined by a central processing unit (CPU). The first frequency signal or the second frequency signal is received. The method for selecting a near field communication and wireless charging sharing sensing module according to claim 13 , wherein in the step of controlling the line selecting unit, the line selecting unit is controlled by a central processing unit (CPU). The third wafer unit is electrically connected to the first coil or the second coil. A selection circuit for a near field communication and a wireless charging sharing sensing module, comprising: a sensing module, wherein a first coil and a second coil are disposed to respectively receive a first frequency signal or a second frequency a first chip unit electrically connecting the first coil to capture the first frequency signal; a second wafer unit electrically connecting the second coil to capture the second frequency signal; and a central processing unit Electrically connecting the first chip unit and the second chip unit to determine that the sensing module receives a first frequency signal or a second frequency signal, and controls to open a first wafer unit electrically connected to the first coil or Controlling opening a second wafer unit is electrically connected to the second coil. The selection circuit of the near field communication and the wireless charging sharing sensing module according to claim 19, wherein the first coil and the second coil are respectively provided with two lead wires. The selection circuit of the near field communication and the wireless charging sharing sensing module according to claim 20, wherein one of the first coils of the first coil and one of the second coils are electrically connected to each other. Shared end. The selection circuit of the near field communication and wireless charging sharing sensing module according to claim 19, wherein the first frequency signal is a near field communication signal, and the first chip unit is a near field communication chip ( IC), the second frequency signal is the wireless power signal, and the second chip unit is a wireless charging chip (IC). A selection circuit for a near field communication and a wireless charging sharing sensing module, comprising: a sensing module, wherein a first coil and a second coil are disposed to respectively receive a first frequency signal or a second frequency a signal selection unit, wherein the second selection unit is electrically connected to the first coil and the second coil, and further comprises a common terminal; a first wafer unit electrically connected to the common terminal of the line selection unit, The first frequency signal is electrically connected to the first coil through the line selection unit; the second chip unit is electrically connected to the common terminal of the line selection unit, and is electrically connected to the first through the line selection unit a second coil for capturing the second frequency signal; and a central processing unit electrically connecting the first chip unit and the second wafer unit to determine whether the sensing module receives the first frequency signal or the second frequency And controlling the line selection unit to select the first wafer unit to be electrically connected to the first coil, or to control the line selection unit to select the second wafer unit to be electrically connected to the second coil. The selection circuit of the near field communication and the wireless charging sharing sensing module according to claim 23, wherein the first coil and the second coil are respectively provided with two lead wires. The selection circuit of the near field communication and the wireless charging sharing induction module according to claim 24, wherein one of the first coil leads and one of the second coils are electrically connected to each other. Shared end. The selection circuit of the near field communication and wireless charging sharing sensing module according to claim 23, wherein the first frequency signal is a near field communication signal, and the first chip unit is a near field communication chip ( IC), the second frequency signal is the wireless power signal, and the second chip unit is a wireless charging chip (IC). A selection circuit for a near field communication and a wireless charging sharing sensing module, comprising: a sensing module, wherein a first coil and a second coil are disposed to respectively receive a first frequency signal or a second frequency a signal selection unit, wherein the second selection unit is electrically connected to the first coil and the second coil, and further comprises a common terminal; a third chip unit electrically connected to the common terminal of the line selection unit, The first frequency signal or the second frequency signal is electrically connected to the first coil or the second coil through the line selection unit; and a central processing unit is electrically connected to the third wafer unit for determining the sensing The module senses receiving the first frequency signal or the second frequency signal, and controls the line selection unit to select that the third wafer unit is electrically connected to the first coil or electrically connected to the second coil. The selection circuit of the near field communication and wireless charging sharing sensing module described in claim 27, wherein the first coil and the second coil are respectively provided with two lead wires. The selection circuit of the near field communication and the wireless charging sharing sensing module according to claim 28, wherein one of the first coils of the first coil and one of the second coils are electrically connected to each other. Shared end. The selection circuit of the near field communication and wireless charging sharing sensing module described in claim 27, wherein the first frequency signal is a near field communication signal, and the second frequency signal is the wireless power signal, and The third wafer unit is a near field communication and wireless charging dual function chip (IC).