Wireless transmission circuit and charging base for smart wearable device

Abstract

The application discloses a wireless transmission circuit and a charging base for a smart wearable device. A first wireless data transmission module is used to convert digital signals emitted by an external power supply device into radio frequency signals, and the radio frequency signals are sent to a device end through a built-in millimeter wave antenna. Then, the built-in millimeter wave antenna receives target radio frequency signals sent by the device end, and the target radio frequency signals are converted into target digital signals and transmitted to the external power supply device. A first wireless data transmission module in a charging end is used to convert digital signals emitted by an external power supply device into radio frequency signals, and the radio frequency signals are sent to a device end through a built-in millimeter wave antenna. The first wireless data transmission module in the charging end is also used to receive target radio frequency signals sent by the device end through the built-in millimeter wave antenna, and the target radio frequency signals are converted into target digital signals and transmitted to the external power supply device. Thus, wireless data transmission between the external power supply device and the device end can be realized through the first wireless data transmission module.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of data transmission, and particularly relates to a wireless transmission circuit and a charging base for a smart wearable device. BACKGROUND

[0002] At present, electronic devices such as mobile phones, tablet computers, notebook computers, smart watches and electric toothbrushes have become one of the indispensable items in people's work and life, and people's functional requirements and convenience requirements for electronic devices are also higher and higher. For example, the charging process of an electronic device can adopt wireless charging technology, without considering the limitation of a power line, and reducing the wear and tear of the device caused by frequent plugging and unplugging of the power line. Wireless data transmission between devices capable of wireless charging is also becoming more and more important. Therefore, how to realize wireless data transmission between wireless charging devices has become a technical problem to be solved.

[0003] The above content is only used to assist in understanding the technical solutions of the present application, and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0004] The main purpose of the present application is to provide a wireless transmission circuit and a charging base for a smart wearable device, which aims to solve the technical problem of how to realize wireless data transmission between wireless charging devices.

[0005] To achieve the above purpose, the present application provides a wireless transmission circuit for a smart wearable device, which is applied to a charging end, and the wireless transmission circuit comprises a first wireless data transmission module.

[0006] The first wireless data transmission module is used for converting a digital signal emitted by an external power supply device into a radio frequency signal, and sending the radio frequency signal to a device end through a built-in millimeter wave antenna.

[0007] The first wireless data transmission module is also used for receiving a target radio frequency signal sent by the device end through the built-in millimeter wave antenna, and converting the target radio frequency signal into a target digital signal and transmitting the target digital signal to the external power supply device.

[0008] Optionally, the first wireless data transmission module comprises a first millimeter wave wireless transceiver chip.

[0009] The first millimeter wave wireless transceiver chip is used for receiving a digital signal emitted by the external power supply device when a first trigger signal is received.

[0010] The first millimeter wave wireless transceiver chip is also used for converting the digital signal into a radio frequency signal, and sending the radio frequency signal to the device end through the built-in millimeter wave antenna.

[0011] The first millimeter wave wireless transceiver chip is further configured to receive a target radio frequency signal transmitted by the device end through the built-in millimeter wave antenna, and convert the target radio frequency signal into a target digital signal and transmit the target digital signal to the external power supply device.

[0012] Optionally, the first wireless data transmission module further comprises an external interface and a first linear voltage stabilizer.

[0013] The input end of the first linear voltage stabilizer is connected with the external interface, the output end of the first linear voltage stabilizer is connected with the power supply end of the first millimeter wave wireless transceiver chip, and the signal end of the first millimeter wave wireless transceiver chip is connected with the signal end of the external interface.

[0014] The external interface is configured to provide a first direct current voltage to the first linear voltage stabilizer when connected with the external power supply device.

[0015] The first linear voltage stabilizer is configured to perform voltage conversion on the first direct current voltage when receiving the first direct current voltage provided by the external interface, and transmit the converted first direct current voltage to the first millimeter wave wireless transceiver chip.

[0016] The first millimeter wave wireless transceiver chip is further configured to receive a digital signal emitted from the external power supply device when receiving the converted first direct current voltage.

[0017] Optionally, the external interface is further configured to transmit the digital signal emitted from the external power supply device to the first millimeter wave wireless transceiver chip.

[0018] Optionally, the wireless transmission circuit further comprises a first wireless charging chip and a first wireless charging coil.

[0019] The input end of the first wireless charging chip is connected with the external interface, and the output end of the first wireless charging chip is connected with the first wireless charging coil.

[0020] The first wireless charging chip is configured to convert the first direct current voltage into an electromagnetic wave when receiving the first direct current voltage provided by the external interface.

[0021] The first wireless charging coil is configured to transmit the electromagnetic wave to the device end to perform wireless charging on the device end.

[0022] To achieve the above-mentioned purpose, the application further provides a charging base, wherein the charging base comprises the wireless transmission circuit as described above.

[0023] Optionally, the charging base further comprises a magnet, and the magnet corresponds to the position of the Hall sensor built-in the device end.

[0024] To achieve the above object, the application further provides a wireless transmission circuit applied to a device end, comprising a second wireless data transmission module;

[0025] The second wireless data transmission module is used for converting a digital signal sent by a built-in central processing unit into a radio frequency signal and sending the radio frequency signal to a charging end through a built-in millimeter wave antenna;

[0026] The second wireless data transmission module is further used for receiving a target radio frequency signal sent by the charging end through the built-in millimeter wave antenna and converting the target radio frequency signal into a target digital signal and transmitting the target digital signal to the built-in central processing unit.

[0027] Optionally, the second wireless data transmission module comprises a second millimeter wave wireless transceiver chip and a central processing unit.

[0028] The signal end of the second millimeter wave wireless transceiver chip is connected with the central processing unit.

[0029] The second millimeter wave wireless transceiver chip is used for receiving a target radio frequency signal sent by the charging end through the built-in millimeter wave antenna when a second trigger signal is received.

[0030] The second millimeter wave wireless transceiver chip is further used for converting the target radio frequency signal into a target digital signal and transmitting the target digital signal to the built-in central processing unit.

[0031] The second millimeter wave wireless transceiver chip is further used for converting a digital signal sent by the central processing unit into a radio frequency signal and sending the radio frequency signal to the charging end through the built-in millimeter wave antenna.

[0032] Optionally, the wireless transmission circuit further comprises a second wireless charging coil and a second wireless charging chip.

[0033] The input end of the second wireless charging chip is connected with the second wireless charging coil, and the output end of the second wireless charging chip is connected with the second wireless data transmission module.

[0034] The second wireless charging coil is used for receiving an electromagnetic wave sent by the charging end.

[0035] The second wireless charging chip is used for converting the electromagnetic wave into a second direct current voltage to wirelessly charge the device end.

[0036] Optionally, the second wireless data transmission module further comprises a second linear voltage stabilizer and a Hall sensor.

[0037] The output ends of the second wireless charging chip are connected with the power supply end of the second linear voltage stabilizer and the power supply end of the Hall sensor respectively, the output end of the Hall sensor is connected with the opening end of the second linear voltage stabilizer, and the output end of the second linear voltage stabilizer is connected with the power supply end of the second millimeter wave wireless transceiver chip;

[0038] The Hall sensor is used for outputting a high level signal to the second linear voltage stabilizer when the second direct current voltage is received and the magnet of the charging end is sensed.

[0039] The second linear voltage stabilizer is used for performing voltage conversion on the second direct current voltage and transmitting the converted second direct current voltage to the second millimeter wave wireless transceiver chip when the second direct current voltage and the high level signal are received.

[0040] The second millimeter wave wireless transceiver chip is further used for receiving the target radio frequency signal sent by the charging end through the built-in millimeter wave antenna when the converted second direct current voltage is received.

[0041] In the application, the wireless transmission circuit for the smart wearable device comprises a first wireless data transmission module; the digital signal sent by the external power supply device is converted into a radio frequency signal by the first wireless data transmission module, and the radio frequency signal is sent to the device end through the built-in millimeter wave antenna, then the target radio frequency signal sent by the device end is received through the built-in millimeter wave antenna, and the target radio frequency signal is converted into a target digital signal and transmitted to the external power supply device. The digital signal sent by the external power supply device is converted into a radio frequency signal by the first wireless data transmission module in the charging end, and the radio frequency signal is sent to the device end through the built-in millimeter wave antenna; the target radio frequency signal sent by the device end is received through the built-in millimeter wave antenna of the first wireless data transmission module in the charging end, and the target radio frequency signal is converted into a target digital signal and transmitted to the external power supply device, so that the wireless data transmission between the external power supply device and the device end can be realized through the first wireless data transmission module in the charging end. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description.

[0043] Figure 1 The functional module diagram of the first embodiment of the wireless transmission circuit for the smart wearable device of the application;

[0044] Figure 2 The circuit structure schematic diagram of the second embodiment of the wireless transmission circuit for the smart wearable device of the application;

[0045] Figure 3 This is a functional block diagram of a third embodiment of the wireless transmission circuit for a smart wearable device according to the present invention;

[0046] Figure 4 This is a schematic diagram of the circuit structure of the fourth embodiment of the wireless transmission circuit for smart wearable devices according to the present invention.

[0047] Explanation of icon numbers:

[0048] Reference numerals Names Reference numerals Names 10 First wireless data transmission module L1~L2 First to second wireless charging coils 20 Second wireless data transmission module C1~C4 First to fourth capacitors C External interface U4 Second millimeter wave wireless transceiver chip U1 First millimeter wave wireless transceiver chip U5 Central processing unit U2 First linear voltage regulator U6 Second wireless charging chip U3 First wireless charging chip U7 Second linear voltage regulator U8 Hall sensor

[0049] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0051] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0052] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0053] Reference Figure 1 , Figure 1 This is a functional block diagram of the first embodiment of the wireless transmission circuit for smart wearable devices according to the present invention.

[0054] like Figure 1 As shown, in this embodiment of the invention, the wireless transmission circuit for a smart wearable device includes: a first wireless data transmission module 10;

[0055] The first wireless data transmission module 10 is configured to convert the digital signal emitted by the external power supply device into a radio frequency signal, and transmit the radio frequency signal to the device end through the built-in millimeter wave antenna.

[0056] It should be noted that the wireless transmission circuit in the embodiment can be applied to smart wearable devices, such as smart watches, smart bracelets, etc. The external power supply device refers to a device that can charge the device end through the charging end and can emit a digital signal, such as a computer, a charging power supply, etc.

[0057] It can be understood that the embodiment can be applied to the charging end, that is, the device for wirelessly charging the device end. The charging end can be a charging base, and the device end can be a mobile phone, a watch, etc.

[0058] It should be understood that the digital signal can include data that needs to be transmitted from the external power supply device to the device end. The first wireless data transmission module 10 can convert the digital signal into a radio frequency signal. The frequency band of the radio frequency signal can be a 60GHz frequency band. 60GHz is a license-exempt / light licensed frequency band that can provide high bandwidth and optimal per-bit power consumption.

[0059] In a specific implementation, the millimeter wave antenna can be placed in the first wireless data transmission module 10. The radio frequency signal can be transmitted to the device end through the millimeter wave antenna, thereby realizing wireless data transmission between the external power supply device and the device end.

[0060] The first wireless data transmission module 10 is also configured to receive a target radio frequency signal transmitted by the device end through the built-in millimeter wave antenna, and convert the target radio frequency signal into a target digital signal and transmit the target digital signal to the external power supply device.

[0061] It can be understood that in addition to transmitting a radio frequency signal through the millimeter wave antenna, the first wireless data transmission module 10 can also receive a target radio frequency signal emitted by the device end, convert the target radio frequency signal into a target digital signal through the first wireless data transmission module 10, and then transmit the target digital signal to the external power supply device, thereby realizing wireless data transmission between the external power supply device and the device end.

[0062] In the embodiment, the wireless transmission circuit comprises a first wireless data transmission module; the first wireless data transmission module is used to convert the digital signal sent by the external power supply device into a radio frequency signal, and the radio frequency signal is sent to the device end through the built-in millimeter wave antenna; then the target radio frequency signal sent by the device end is received through the built-in millimeter wave antenna of the first wireless data transmission module in the charging end, and the target radio frequency signal is converted into a target digital signal and transmitted to the external power supply device.

[0063] Further, based on the first embodiment, the second embodiment of the wireless transmission circuit for the smart wearable device is provided. Figure 2 , Figure 2 FIG. 1 is a circuit structure schematic diagram of the wireless transmission circuit for the smart wearable device according to the second embodiment of the present application.

[0064] As shown in FIG. 1, the first wireless data transmission module comprises a first millimeter wave wireless transceiver chip U1. Figure 2

[0065] The first millimeter wave wireless transceiver chip U1 is used to receive the digital signal sent by the external power supply device when receiving the first trigger signal.

[0066] It can be understood that when the first trigger signal is received at the VCC interface of the first millimeter wave wireless transceiver chip U1, the first trigger signal can be a voltage signal, and the first millimeter wave wireless transceiver chip U1 is in a working state, at this time, the USB DP / DM interface of the first millimeter wave wireless transceiver chip U1 can receive the digital signal sent by the external power supply device.

[0067] The first millimeter wave wireless transceiver chip U1 is also used to convert the digital signal into a radio frequency signal, and send the radio frequency signal to the device end through the built-in millimeter wave antenna.

[0068] It should be understood that the first millimeter wave wireless transceiver chip U1 can perform signal transceiving and signal processing, and convert the digital signal into a radio frequency signal.

[0069] In specific implementation, the millimeter wave antenna can be connected with the ANT interface of the first millimeter wave wireless transceiver chip U1, and the radio frequency signal can be sent to the device end through the millimeter wave antenna, so as to realize the wireless data transmission between the external power supply device and the device end. ​

[0070] The first millimeter wave wireless transceiver chip U1 is also configured to receive a target radio frequency signal transmitted by the device end through the built-in millimeter wave antenna, and convert the target radio frequency signal into a target digital signal and transmit the target digital signal to the external power supply device.

[0071] It can be understood that, in addition to being able to transmit a radio frequency signal through a millimeter wave antenna, the first millimeter wave wireless transceiver chip U1 can also receive a target radio frequency signal transmitted by the device end, and convert the target radio frequency signal into a target digital signal through the first millimeter wave wireless transceiver chip U1, and then transmit the target digital signal to the external power supply device, thereby realizing wireless data transmission between the external power supply device and the device end.

[0072] The first wireless data transmission module further comprises an external interface C and a first linear voltage stabilizer U2.

[0073] The input end of the first linear voltage stabilizer U2 is connected with the external interface C, the output end of the first linear voltage stabilizer U2 is connected with the power supply end of the first millimeter wave wireless transceiver chip U1, and the signal end of the first millimeter wave wireless transceiver chip U1 is connected with the signal end of the external interface C.

[0074] The external interface C is configured to provide a first direct current voltage to the first linear voltage stabilizer U2 when connected with the external power supply device.

[0075] It should be noted that the external interface C can be connected to the interface of the external power supply device, and the external interface C can be a USB connector or other types of connectors, and the present embodiment takes the USB connector as an example for description. At this time, the external power supply device provides a first direct current voltage to the first wireless data transmission module 10 to provide a first direct current voltage to the first linear voltage stabilizer U2, and the voltage of the first direct current voltage can be 5V, 6V, etc., which is not limited in the present embodiment.

[0076] The first linear voltage stabilizer U2 is configured to convert the first direct current voltage when receiving the first direct current voltage provided by the external interface C, and transmit the converted first direct current voltage to the first millimeter wave wireless transceiver chip U1.

[0077] It should be understood that when the ON interface of the first linear voltage stabilizer U2 is high, the first linear voltage stabilizer U2 is in a working state, and the first linear voltage stabilizer U2 can convert the first direct current voltage received by the VIN interface of the first linear voltage stabilizer U2 from the VBUS interface of the external interface C, so that the converted first direct current voltage can power the first millimeter wave wireless transceiver chip U1, for example: when the first direct current voltage is 5V, that is, Figure 3When the VBUS1 in the first linear voltage regulator U2 is 5V, the first linear voltage regulator U2 can convert the 5V voltage into a 1.8V voltage or a 3.3V voltage, which can be determined according to the model of the first linear voltage regulator U2. The size of the converted first direct current voltage can be determined according to the model of the first millimeter wave wireless transceiver chip U1. The embodiment does not specifically limit the size of the first direct current voltage and the size of the converted first direct current voltage.

[0078] The first millimeter wave wireless transceiver chip U1 is further configured to receive a digital signal output by the external power supply device when receiving the converted first direct current voltage.

[0079] It can be understood that when the VCC interface of the first millimeter wave wireless transceiver chip U1 receives the converted first direct current voltage, the converted first direct current voltage can be 1.8V, that is, Figure 3 When the VCC1 in the first millimeter wave wireless transceiver chip U1 is in a working state, the USB DP / DM interface of the first millimeter wave wireless transceiver chip U1 can receive a digital signal output by the USB DP / DM interface of the external interface C.

[0080] The external interface C is further configured to transmit the digital signal output by the external power supply device to the first millimeter wave wireless transceiver chip U1.

[0081] It can be understood that the external interface C can also transmit the digital signal output by the external power supply device to the first millimeter wave wireless transceiver chip U1, so that the first millimeter wave wireless transceiver chip U1 converts the digital signal into a radio frequency signal.

[0082] Further, the wireless transmission circuit further comprises a first wireless charging chip U3 and a first wireless charging coil L1.

[0083] The input end of the first wireless charging chip L1 is connected with the external interface C, and the output end of the first wireless charging chip U3 is connected with the first wireless charging coil L1.

[0084] The first wireless charging chip U3 is configured to convert the first direct current voltage into an electromagnetic wave when receiving the first direct current voltage provided by the external interface C.

[0085] It should be understood that the VBUS interface of the first wireless charging chip U3 can receive the first direct current voltage provided by the VBUS interface of the external interface, and then convert the first direct current voltage into an electromagnetic wave.

[0086] The first wireless charging coil L1 is configured to send the electromagnetic wave to the device end to wirelessly charge the device end.

[0087] It can be understood that the first wireless charging coil L1 can send electromagnetic waves to the device end to perform wireless charging on the device end.

[0088] In a specific implementation, the wireless transmission circuit in the embodiment further includes a first capacitor C1 and a second capacitor C2. Figure 3 The first capacitor C1 functions to filter and stabilize the first direct current voltage, i.e. Figure 3 The second capacitor C2 functions to filter and stabilize the converted first direct current voltage, i.e.

[0089] In the embodiment, the first wireless data transmission module includes a first millimeter wave wireless transceiver chip.

[0090] To achieve the above object, the application further provides a charging base including the wireless transmission circuit for a smart wearable device as described in the first and second embodiments.

[0091] Further, the charging base further includes a magnet corresponding to the position of a Hall sensor built-in the device end.

[0092] It can be understood that the device end is built-in with a Hall sensor, the position of the magnet is opposite to the Hall sensor of the device end, and when the Hall sensor senses the magnet, it indicates that the device end is located on the charging end.

[0093] Referring to Figure 3 , Figure 3 is a functional module diagram of the wireless transmission circuit for a smart wearable device in the third embodiment of the application.

[0094] As shown in Figure 3 , in the embodiment of the application, the wireless transmission circuit for a smart wearable device includes a second wireless data transmission module 20.

[0095] The wireless data transmission module 20 is configured to convert the digital signal from the built-in central processing unit into a radio frequency signal and transmit the radio frequency signal to the charging end through the built-in millimeter wave antenna.

[0096] It can be understood that the embodiment can be applied to the device end, that is, the device end is used for wireless charging, and the charging end can be a charging base, and the device end can be a mobile phone, a watch, etc.

[0097] It should be understood that the digital signal can include data that needs to be transmitted from the device end to the external power supply device, and the second wireless data transmission module 20 can convert the digital signal into a radio frequency signal, and the frequency band of the radio frequency signal can be a 60GHz frequency band. 60GHz is a license-free / light license frequency band, which can provide high bandwidth and the best per-bit power consumption.

[0098] In a specific implementation, the millimeter wave antenna can be placed in the second wireless data transmission module 20, and the radio frequency signal can be transmitted to the charging end through the millimeter wave antenna, and then transmitted to the external power supply device through the USB connector by the charging end, thereby realizing wireless data transmission between the external power supply device and the device end.

[0099] The wireless data transmission module 20 is also configured to receive the target radio frequency signal transmitted by the charging end through the built-in millimeter wave antenna, and convert the target radio frequency signal into a target digital signal and transmit the target digital signal to the built-in central processing unit.

[0100] It can be understood that in addition to transmitting a radio frequency signal through a millimeter wave antenna, the second wireless data transmission module 20 can also receive a target radio frequency signal from the charging end, convert the target radio frequency signal into a target digital signal through the second wireless data transmission module 20, and then transmit the target digital signal to the built-in central processing unit of the device end, thereby realizing wireless data transmission between the external power supply device and the device end.

[0101] In the embodiment, the wireless transmission circuit for the smart wearable device comprises a second wireless data transmission module; the second wireless data transmission module is used to convert the digital signal sent by the built-in central processor into a radio frequency signal, and send the radio frequency signal to the charging end through the built-in millimeter wave antenna, then receive the target radio frequency signal sent by the charging end through the built-in millimeter wave antenna, and convert the target radio frequency signal into a target digital signal and transmit the target digital signal to the built-in central processor. In the embodiment, the second wireless data transmission module in the device end is used to convert the digital signal sent by the built-in central processor into a radio frequency signal, and send the radio frequency signal to the charging end through the built-in millimeter wave antenna, then send the target radio frequency signal sent by the charging end to the external power supply device through the USB connector; the second wireless data transmission module in the device end is also used to receive the target radio frequency signal sent by the charging end through the built-in millimeter wave antenna, and convert the target radio frequency signal into a target digital signal and transmit the target digital signal to the built-in central processor, so that the wireless data transmission between the external power supply device and the device end can be realized through the second wireless data transmission module in the device end.

[0102] Further, based on the third embodiment, the fourth embodiment of the present application is proposed. Referring to Figure 3 , Figure 4 The fourth embodiment of the circuit structure of the wireless transmission circuit for the smart wearable device of the present application is shown in the figure.

[0103] As Figure 4 shown, the second wireless data transmission module 20 comprises a second millimeter wave wireless transceiver chip U4 and a central processor U5;

[0104] The signal end of the second millimeter wave wireless transceiver chip U4 is connected with the central processor U5;

[0105] The second millimeter wave wireless transceiver chip U4 is used to receive the target radio frequency signal sent by the charging end through the built-in millimeter wave antenna when receiving the second trigger signal;

[0106] It can be understood that when the second trigger signal is received at the VCC interface of the second millimeter wave wireless transceiver chip U4, the second trigger signal can be a voltage signal, the second millimeter wave wireless transceiver chip U4 is in a working state, and the millimeter wave antenna can be connected with the ANT interface of the second millimeter wave wireless transceiver chip U4, at this time the second millimeter wave wireless transceiver chip U7 can receive the target radio frequency signal sent by the charging end through the built-in millimeter wave antenna.

[0107] The second millimeter wave wireless transceiver chip U4 is also used to convert the target radio frequency signal into a target digital signal and transmit the target digital signal to the built-in central processor U5, and the central processor U5 is arranged in the device end;

[0108] It should be understood that the second millimeter wave wireless transceiver chip U4 can convert the target radio frequency signal into a target digital signal, and then transmit the target digital signal to the central processor U5 through the USB DP / DM interface of the second millimeter wave wireless transceiver chip U4.

[0109] The second millimeter wave wireless transceiver chip U4 is also used to convert the digital signal sent by the central processor U5 into a radio frequency signal, and send the radio frequency signal to the charging end through the built-in millimeter wave antenna.

[0110] It can be understood that in addition to being able to receive a radio frequency signal through a millimeter wave antenna, the second millimeter wave wireless transceiver chip U4 can also convert a digital signal sent by the central processor U5 into a radio frequency signal, and send the radio frequency signal to the charging end through the millimeter wave antenna, realizing wireless data transmission between the external power supply device and the device end.

[0111] In a specific implementation, the wireless transmission circuit in the embodiment can further include a third capacitor C3 and a fourth capacitor C4. The third capacitor C3 functions to filter and stabilize the second direct current voltage, i.e., VBUS2 in Figure 4 The fourth capacitor C4 functions to filter and stabilize the converted second direct current voltage, i.e., VCC2 in Figure 4 .

[0112] Further, the wireless transmission circuit further includes a second wireless charging coil L2 and a second wireless charging chip U6.

[0113] The input end of the second wireless charging chip U6 is connected with the second wireless charging coil L2, and the output end of the second wireless charging chip U6 is connected with the second wireless data transmission module 20.

[0114] The second wireless charging coil L2 is used to receive electromagnetic waves sent by the charging end.

[0115] It can be understood that the second wireless charging coil L2 can receive electromagnetic waves sent by the charging end.

[0116] The second wireless charging chip U6 is used to convert the electromagnetic waves into a second direct current voltage to wirelessly charge the device end.

[0117] It should be understood that the second wireless charging chip U6 can convert the electromagnetic waves into a second direct current voltage, and then wirelessly charge the device end through the VBUS interface of the second wireless charging chip U6. The VBUS interface of the second wireless charging chip U6 can also transmit the second direct current voltage to the second wireless data transmission module 20.

[0118] Further, the second wireless data transmission module 20 further comprises a second linear voltage stabilizer U7 and a Hall sensor U8;

[0119] The output end of the second wireless charging chip U6 is connected with the power supply end of the second linear voltage stabilizer U7 and the power supply end of the Hall sensor U8 respectively, the output end of the Hall sensor U8 is connected with the opening end of the second linear voltage stabilizer U7, and the output end of the second linear voltage stabilizer U7 is connected with the power supply end of the second millimeter wave wireless transceiver chip U6.

[0120] The Hall sensor U8 is configured to output a high-level signal to the second linear voltage stabilizer U7 when receiving the second direct current voltage and sensing the magnet of the charging end.

[0121] It can be understood that when the VDD interface of the Hall sensor U8 receives the second direct current voltage, i.e. Figure 4 , the Hall sensor U8 is in a working state, the charging end has a small magnet, the position of the small magnet is opposite to the Hall sensor U8 of the device end, and when the Hall sensor U8 senses the magnet, it indicates that the device end is located above the charging end, and the OUT interface of the Hall sensor U8 outputs a high level to the ON interface of the second linear voltage stabilizer U7.

[0122] The second linear voltage stabilizer U7 is configured to perform voltage conversion on the second direct current voltage when receiving the second direct current voltage and the high-level signal, and transmit the converted second direct current voltage to the second millimeter wave wireless transceiver chip U6.

[0123] It should be understood that when the ON interface of the second linear voltage stabilizer U7 is high, the second linear voltage stabilizer U7 is in a working state, and the VIN interface of the second linear voltage stabilizer U7 can perform voltage conversion on the second direct current voltage received from the VBUS interface of the second wireless charging chip U6, so that the converted second direct current voltage, i.e. Figure 4 Figure 4 , can supply power to the second millimeter wave wireless transceiver unit U6, for example, when the second direct current voltage is 5V, the second linear voltage stabilizer U7 can convert the 5V voltage into a 1.8V voltage or a 3.3V voltage, the specific conversion can be determined according to the model of the second linear voltage stabilizer U7, and the size of the converted second direct current voltage can be determined according to the model of the second millimeter wave wireless transceiver chip U6, and the embodiment does not make specific limitation on the size of the second direct current voltage and the size of the converted second direct current voltage.

[0124] The second millimeter wave wireless transceiver chip U6 is further configured to receive the target radio frequency signal sent by the charging end through the built-in millimeter wave antenna when receiving the converted second direct current voltage.

[0125] It can be understood that when the converted second direct current voltage is received at the VCC interface of the second millimeter wave wireless transceiver chip U6, the converted first direct current voltage can be 1.8V, the second millimeter wave wireless transceiver chip U6 is in a working state, and the millimeter wave antenna can be connected with the ANT interface of the second millimeter wave wireless transceiver chip U6. At this time, the second millimeter wave wireless transceiver chip U6 can receive the target radio frequency signal sent by the charging end through the built-in millimeter wave antenna.

[0126] In the embodiment, the second wireless data transmission module includes a second millimeter wave wireless transceiver chip and a central processor. In the embodiment, when the second trigger signal is received by the second millimeter wave wireless transceiver chip, the target radio frequency signal sent by the charging end is received through the built-in millimeter wave antenna, the target radio frequency signal is converted into a target digital signal and transmitted to the built-in central processor, the central processor is placed in the device end, the digital signal sent by the central processor is converted into a radio frequency signal, and the radio frequency signal is sent to the charging end through the built-in millimeter wave antenna. The second linear voltage regulator can supply power to the second millimeter wave wireless transceiver chip, and the second millimeter wave wireless transceiver chip in the device end can perform wireless data transmission between the external power supply device and the device end.

[0127] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like within the inventive concept of the present application, using the content of the present application specification and drawings, is included in the patent protection scope of the present application.

Claims

1. A wireless transmission circuit for a smart wearable device, applied to a charging end, characterized in that, The wireless transmission circuit comprises a first wireless data transmission module; The first wireless data transmission module is configured to convert a digital signal emitted by an external power supply device into a radio frequency signal, and transmit the radio frequency signal to a device end through a built-in millimeter wave antenna; The first wireless data transmission module is further configured to receive a target radio frequency signal transmitted by the device end through the built-in millimeter wave antenna, and convert the target radio frequency signal into a target digital signal and transmit the target digital signal to the external power supply device; The wireless transmission circuit in the device end comprises a second wireless data transmission module; The second wireless data transmission module is configured to convert a digital signal emitted by a built-in central processing unit into a radio frequency signal, and transmit the radio frequency signal to the charging end through a built-in millimeter wave antenna; The second wireless data transmission module is further configured to receive a target radio frequency signal transmitted by the charging end through the built-in millimeter wave antenna, and convert the target radio frequency signal into a target digital signal and transmit the target digital signal to the built-in central processing unit; The charging end further comprises a magnet corresponding to the position of a Hall sensor built in the device end; When the Hall sensor senses the magnet of the charging end, the Hall sensor controls the second wireless data transmission module to transmit the radio frequency signal to the charging end through the built-in millimeter wave antenna. 2.The wireless transmission circuit for smart wearables of claim 1, wherein, The first wireless data transmission module comprises a first millimeter wave wireless transceiver chip; The first millimeter wave wireless transceiver chip is configured to receive a digital signal emitted by the external power supply device when a first trigger signal is received; The first millimeter wave wireless transceiver chip is further configured to convert the digital signal into a radio frequency signal, and transmit the radio frequency signal to a device end through a built-in millimeter wave antenna; The first millimeter wave wireless transceiver chip is further configured to receive a target radio frequency signal transmitted by the device end through the built-in millimeter wave antenna, and convert the target radio frequency signal into a target digital signal and transmit the target digital signal to the external power supply device. 3.The wireless transmission circuit for smart wearables of claim 1, wherein, The first wireless data transmission module further comprises an external interface and a first linear voltage stabilizer; An input end of the first linear voltage stabilizer is connected with the external interface, an output end of the first linear voltage stabilizer is connected with a power supply end of the first millimeter wave wireless transceiver chip, and a signal end of the first millimeter wave wireless transceiver chip is connected with a signal end of the external interface; The external interface is configured to provide a first direct current voltage to the first linear voltage stabilizer when the external interface is connected with an external power supply device; The first linear voltage stabilizer is configured to perform voltage conversion on the first direct current voltage when the first direct current voltage is received from the external interface, and transmit the converted first direct current voltage to the first millimeter wave wireless transceiver chip; The first millimeter wave wireless transceiver chip is further configured to receive a digital signal emitted by the external power supply device when the converted first direct current voltage is received. 4.The wireless transmission circuit for smart wearables of claim 3, wherein, The external interface is further configured to transmit the digital signal emitted by the external power supply device to the first millimeter wave wireless transceiver chip. 5.The wireless transmission circuit for smart wearables of claim 3, wherein, The wireless transmission circuit further comprises a first wireless charging chip and a first wireless charging coil; An input end of the first wireless charging chip is connected with the external interface, and an output end of the first wireless charging chip is connected with the first wireless charging coil; The first wireless charging chip is configured to convert a first direct current voltage provided by the external interface into electromagnetic waves when the first direct current voltage is received. The first wireless charging coil is configured to send the electromagnetic waves to the device end to perform wireless charging on the device end.

6. A charging base, comprising: The charging base comprises the wireless transmission circuit according to any one of claims 1 to 5.

7. The charging dock of claim 6, further comprising: A magnet corresponding to the position of a Hall sensor built in the device end. 8.A wireless transmission circuit for a smart wearable device, applied to a device end, characterized in that, The wireless transmission circuit comprises a second wireless data transmission module. The second wireless data transmission module is configured to convert a digital signal sent by a built-in central processing unit into a radio frequency signal, and send the radio frequency signal to the charging end through a built-in millimeter wave antenna. The second wireless data transmission module is further configured to receive a target radio frequency signal sent by the charging end through the built-in millimeter wave antenna, and convert the target radio frequency signal into a target digital signal and transmit the target digital signal to the built-in central processing unit. The wireless transmission circuit in the charging end comprises a first wireless data transmission module. The first wireless data transmission module is configured to convert a digital signal sent by an external power supply device into a radio frequency signal, and send the radio frequency signal to the device end through a built-in millimeter wave antenna. The first wireless data transmission module is further configured to receive a target radio frequency signal sent by the device end through the built-in millimeter wave antenna, and convert the target radio frequency signal into a target digital signal and transmit the target digital signal to the external power supply device. The charging end further comprises a magnet corresponding to the position of a Hall sensor built in the device end. When the Hall sensor senses the magnet of the charging end, the Hall sensor controls the second wireless data transmission module to send the radio frequency signal to the charging end through the built-in millimeter wave antenna. 9.The wireless transmission circuit for smart wearables of claim 8, wherein, The second wireless data transmission module comprises a second millimeter wave wireless transceiver chip and a central processing unit. A signal end of the second millimeter wave wireless transceiver chip is connected with the central processing unit. The second millimeter wave wireless transceiver chip is configured to receive a target radio frequency signal sent by the charging end through a built-in millimeter wave antenna when a second trigger signal is received. The second millimeter wave wireless transceiver chip is further configured to convert the target radio frequency signal into a target digital signal and transmit the target digital signal to the built-in central processing unit. The second millimeter wave wireless transceiver chip is further configured to convert a digital signal sent by the central processing unit into a radio frequency signal, and send the radio frequency signal to the charging end through the built-in millimeter wave antenna. 10.The wireless transmission circuit for smart wearables of claim 9, wherein, The wireless transmission circuit further comprises a second wireless charging coil and a second wireless charging chip. An input end of the second wireless charging chip is connected with the second wireless charging coil, and an output end of the second wireless charging chip is connected with the second wireless data transmission module. The second wireless charging coil is configured to receive electromagnetic waves sent by the charging end. The second wireless charging chip is configured to convert the electromagnetic wave into a second direct current voltage to wirelessly charge the device end. 11.The wireless transmission circuit for smart wearables of claim 10, wherein, The second wireless data transmission module further includes a second linear voltage stabilizer; An output end of the second wireless charging chip is connected with a power supply end of the second linear voltage stabilizer and a power supply end of the Hall sensor respectively, an output end of the Hall sensor is connected with an opening end of the second linear voltage stabilizer, and an output end of the second linear voltage stabilizer is connected with a power supply end of the second millimeter wave wireless transceiver chip; The Hall sensor is configured to output a high-level signal to the second linear voltage stabilizer when the second direct current voltage is received and the magnet of the charging end is sensed; The second linear voltage stabilizer is configured to convert the second direct current voltage when the second direct current voltage and the high-level signal are received, and transmit the converted second direct current voltage to the second millimeter wave wireless transceiver chip; The second millimeter wave wireless transceiver chip is further configured to receive a target radio frequency signal sent by the charging end through the built-in millimeter wave antenna when the converted second direct current voltage is received.

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