Key circuit and intelligent ring

Abstract

The invention provides a key circuit and an intelligent ring. The key circuit comprises a main control circuit, a first detection circuit and a second detection circuit, the first detection circuit is connected with the charging circuit, the main control circuit and the key; the second detection circuit is connected with the key and the main control circuit; wherein the first detection circuit is used for sending a key state detection signal to the main control circuit under the condition of detecting that the charging circuit is not connected to a charging power supply, the main control circuit executes a corresponding function operation based on the key state detection signal sent by the first detection circuit in an operation mode, and the main control circuit executes a corresponding function operation based on the key state detection signal sent by the first detection circuit in a transportation mode. Based on the pressing operation of the key detected by the second detection circuit, entering the operation mode from the transportation mode; the first detection circuit is used for sending a reset signal to the main control circuit when it is detected that the charging circuit is connected to the charging power supply, and the main control circuit is further used for executing a reset action based on the reset signal sent by the first detection circuit. According to the application, multifunctional reuse of a single key can be realized.

Description

Technical Field

[0001] The present application relates to the technical field of electronic circuits, and in particular to a key circuit and a smart ring. Background Art

[0002] When the smart ring needs to be transported, it is usually set to enter a specific transport mode to save the power of the smart ring so that the smart ring still has enough power to start when it arrives at the destination. However, since the transport mode needs to be exited when the smart ring is started, a specific button is required to generate a signal for the smart ring to exit the transport mode. After the button is occupied by the function of exiting the transport mode, the button cannot be reused for other functions due to problems with the chip model or circuit design inside the smart ring. As a result, the smart ring needs to be equipped with other function buttons to enable the smart ring to perform corresponding functions, which is not conducive to the miniaturization of the smart ring. Summary of the invention

[0003] The present application provides a button circuit and a smart ring, aiming to enable a single button to perform different functions in different scenarios, so as to realize the reuse of a single button on the smart ring, thereby reducing the number of buttons required to be set on the smart ring, so as to facilitate the miniaturization of the smart ring.

[0004] In a first aspect, the present application provides a key circuit, the key circuit comprising:

[0005] Main control circuit;

[0006] A first detection circuit, the first detection circuit is used to connect the charging circuit, the main control circuit and the button;

[0007] A second detection circuit, the second detection circuit is used to connect the button and the main control circuit;

[0008] Wherein, the first detection circuit is used to send a key state detection signal to the main control circuit when detecting that the charging circuit is not connected to a charging power source, and the main control circuit performs a corresponding function operation based on the key state detection signal sent by the first detection circuit in the running mode, and the main control circuit enters the running mode from the shipping mode based on the pressing operation of the key detected by the second detection circuit in the shipping mode;

[0009] The first detection circuit is used to send a reset signal to the main control circuit when detecting that the charging circuit is connected to the charging power supply. In the charging mode, the main control circuit performs a reset action based on the reset signal sent by the first detection circuit.

[0010] In a second aspect, the present application further provides a smart ring, which includes at least a button and the button circuit, and the button is connected to the button circuit.

[0011] The present application provides a button circuit and a smart ring. The first detection circuit in the button circuit provided by the present application can send a button status detection signal to the main control circuit when the main control circuit is in the running mode; and when the main control circuit is in the charging mode, the button sends a reset signal to the main control circuit based on the operation of the button; while in the transport mode, the main control circuit can detect the pressing operation of the button based on the second detection circuit, and enter the running mode from the transport mode, thereby realizing the control function of the button in the running mode, the reset function in the charging mode and the start function in the transport mode, thereby realizing the multiplexing of different functions of a single button in different scenarios, so that the smart ring does not need to be set with multiple buttons, thereby realizing miniaturization. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 A schematic diagram of a key circuit provided in an embodiment of the present application;

[0014] Figure 2 A schematic diagram of a key circuit provided by another embodiment of the present application;

[0015] Figure 3 A schematic diagram of a key circuit provided in yet another embodiment of the present application;

[0016] Figure 4 A schematic diagram of a key circuit provided in yet another embodiment of the present application;

[0017] Figure 5 A schematic diagram of a key circuit provided in an embodiment of the present application;

[0018] Figure 6 A schematic diagram of a key circuit provided by another embodiment of the present application;

[0019] Figure 7 A schematic diagram of a key circuit provided in yet another embodiment of the present application;

[0020] Figure 8 A schematic diagram of a key circuit provided in an embodiment of the present application;

[0021] Fig. 9 A schematic diagram of a smart ring provided in accordance with an embodiment of the present application.

[0022] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] The flowcharts shown in the accompanying drawings are only examples and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may also be decomposed, combined or partially merged, so the actual execution order may change according to actual conditions.

[0025] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0026] The present application provides a key circuit, which is applied to a smart ring. The smart ring is also provided with a key.

[0027] Please refer to Figure 1 , Figure 1 A schematic diagram of a key circuit 10 provided in accordance with an embodiment of the present application.

[0028] like Figure 1 As shown, the key circuit 10 includes a main control circuit 12, a first detection circuit 13 and a second detection circuit 14. The first detection circuit 13 is connected to the charging circuit 15, the main control circuit 12 and the key 11; the second detection circuit 14 is connected to the key 11 and the main control circuit 12.

[0029] Among them, in the transportation mode, the main control circuit 12 detects the pressing operation of the button 11 based on the second detection circuit 14, and enters the operation mode from the transportation mode; in the operation mode, the first detection circuit 13 detects that the charging circuit 15 is not connected to the charging power supply, and sends a button status detection signal to the main control circuit 12, so that the main control circuit 12 performs corresponding functional operations in the operation mode based on the button status detection signal sent by the first detection circuit 13; in the charging mode, the first detection circuit 13 detects that the charging circuit 15 is connected to the charging power supply, and thus sends a reset signal to the main control circuit 12, so that the main control circuit 12 performs a reset action in the charging mode based on the reset signal sent by the first detection circuit 13.

[0030] It should be noted that shipping mode is a special battery management state in the smart ring. In shipping mode, by disconnecting the battery from the system, current consumption can be greatly reduced. Under normal circumstances, the quiescent current of the smart ring in shipping mode can be reduced to a very low level, thereby reducing battery power consumption when the smart ring is transported or stored for a long time, thereby achieving the purpose of extending the battery life and protecting battery health.

[0031] Secondly, when the smart ring is in transport mode, it can also prevent components from loosening or being damaged during transportation. Specifically, during the transportation of the smart ring, it will inevitably encounter vibrations, bumps, collisions, etc., and the smart ring also has welding positions of electronic components such as precision chips, chip capacitors and inductors, as well as electronic components with fragile structures. Therefore, the smart ring is easily impacted by external forces, causing electronic components to loosen, welding positions to become desoldered, or even electronic components to be damaged. By turning on the transport mode, some unnecessary operations in the smart ring can be limited to improve the stability of the internal structure of the smart ring. The transport mode can allow some electronic components to enter a low-power, low-stress state, thereby reducing the risk of damage to electronic components due to physical shocks such as vibration, thereby ensuring that the circuit can work normally after arriving at the destination.

[0032] In addition, the smart ring can also avoid the risk of abnormal power supply in the transport mode; it should be understood that due to vibrations and bumps during the transportation process of the smart ring, it is easy to cause some unstable power supply conditions in the smart ring, such as electrostatic discharge, instantaneous high voltage pulses, etc. These unstable power supply conditions are also easy to damage electronic components, causing the performance of electronic components to deteriorate or even permanently damage them. Based on this, a corresponding protection circuit can also be set in the transport mode to automatically cut off the power supply path or perform effective power clamping operations when abnormal power supply is detected in the transport mode, so as to prevent excessive or abnormal power supply current from entering the core circuit part, thereby ensuring the safety of the circuit.

[0033] It can be seen that setting the transportation mode of the smart ring can effectively protect the smart ring during transportation, thereby ensuring that the smart ring can still be activated after arriving at the transportation destination.

[0034] In the specific implementation process, the main control circuit 12 can detect the pressing operation of the button 11 based on the second detection circuit 14 in the transport mode and enter the operation mode; that is, the button 11 can make the main control circuit 12 in the transport mode enter the operation mode, that is, make the smart ring in the transport mode enter the operation mode, wherein the operation mode is the normal working mode of the smart ring, in which the battery is reconnected to the system to power the system. It should be understood that when the main control circuit 12 is in the transport mode, the button 11 can realize the mode switching, thereby achieving the effect of starting the main control circuit 12, thereby making the button 11 have the function of starting the smart ring.

[0035] In the operation mode, when the first detection circuit 13 detects that the charging circuit 15 is not connected to the charging power supply, it sends a key state detection signal to the main control circuit 12, so that the main control circuit 12 performs the corresponding functional operation in response to the key state detection signal. In the specific implementation process, the state of the key 11 includes but is not limited to single-click press release, double-click press release, press without release, release and other states. The first detection circuit 13 can send the corresponding key state detection signal to the main control circuit 12 according to the detected state of the key 11, so that the main control circuit 12 can perform the corresponding functional operation in response to the key state detection signal; it should be noted that the functional operation can be a pre-set function. Taking the smart ring as an example, the functional operation corresponding to single-click press release is to start the user's vital sign detection, and the function corresponding to double-click press release is the display function, etc. This application does not limit the corresponding relationship between the state of the key 11 and the functional operation. It should be understood that when the main control circuit 12 is in the operation mode, the different states of the key 11 can enable the main control circuit 12 to perform different functional operations, thereby enabling the key 11 to have the function of controlling the smart ring.

[0036] In the charging mode, the first detection circuit 13 detects that the charging circuit 15 is connected to the charging power supply, and detects that the button 11 is released, and sends a reset signal to the main control circuit 12, so that the main control circuit 12 responds to the reset signal sent by the first detection circuit 13 in the charging mode and performs a reset action. It should be understood that in the charging mode, the button 11 achieves the effect of resetting the smart ring, so that the button 11 has the function of resetting the smart ring.

[0037] It should be understood that when the first detection circuit 13 detects that the charging circuit 15 is not connected to the charging power supply, it is used to send a button state detection signal to the main control circuit 12 according to the detected state of the button 11; and when it is detected that the charging circuit 15 is connected to the charging power supply, it is used to send a reset signal to the main control circuit 12 according to the detection that the button 11 is released, so that in different modes, the main control circuit 12 can detect different signals through the first detection circuit 13 to perform functional operations or reset actions, thereby enabling the button 11 to respectively realize the functions of starting the smart ring and resetting the smart ring in different modes; and In the transport mode, the main control circuit 12 enters the operation mode by detecting the pressing of the button 11 through the second detection circuit 14, and then in the transport mode, the button 11 can start the smart ring. It can be seen that the button 11 can realize the functions of starting the smart ring, resetting the smart ring and controlling the smart ring through the button circuit 10, thereby realizing the multiplexing of the button 11, so that a single button 11 is set on the smart ring to meet the needs of multiple functions, and there is no need to set multiple buttons 11 corresponding to the required multiple functions, thereby reducing the number of buttons 11 set, so as to facilitate the miniaturization of the smart ring.

[0038] See also Figure 2 , Figure 2 A schematic diagram of a key circuit 10 provided in accordance with another embodiment of the present application.

[0039] In some embodiments, the first detection circuit 13 includes a first detection unit 131, a second detection unit 131 and a switching unit 133; the first detection unit 131 is connected to the button 11 and the main control circuit 12, and the first detection unit 131 is used to send a button status detection signal to the main control circuit 12 when the main control circuit 12 is in the running mode; the second detection unit 131 is connected to the button 11 and the main control circuit 12, and the second detection unit 131 is used to send a reset signal to the main control circuit 12 when the main control circuit 12 is in the charging mode; the switching unit 133 is connected to the first detection unit 131, the second detection unit 131 and the charging circuit 15, and the switching unit 133 is used to control the first detection unit 131 to be turned on and the second detection unit 131 to be turned off when the charging circuit 15 is not connected to the charging power supply, and the switching unit 133 is also used to control the first detection unit 131 to be turned off and the second detection unit 131 to be turned on when the charging circuit 15 is connected to the charging power supply.

[0040] In a specific implementation process, in the operating mode, the charging circuit 15 is not connected to the charging power supply, the switching unit 133 controls the first detection unit 131 to be turned on, and controls the second detection unit 131 to be turned off. In this case, the main control circuit 12 can detect the pressing and releasing states of the button 11 through the turned-on first detection unit 131; and in the charging mode, when the charging circuit 15 is connected to the charging power supply, the switching unit 133 switches to the first detection unit 131 to be turned off, and the second detection unit 131 to be turned on, so that the main control circuit 12 detects the state of the button 11 through the turned-on second detection unit 131.

[0041] It should be noted that the first detection unit 131 and the second detection unit 131 are connected to different ends of the main control unit, so that the signal received by the main control unit through the turned-on first detection unit 131 is a key status detection signal, so that the corresponding functional operation is performed based on the key status detection signal, and the signal received through the turned-on second detection unit 131 is a reset signal, so that a reset action is performed based on the reset signal, thereby realizing that the same key 11 realizes different functions in different modes and realizes the multiplexing of the key 11.

[0042] See also Figure 3 , Figure 3 A schematic diagram of a key circuit 10 provided in yet another embodiment of the present application.

[0043] In some embodiments, the first detection unit 131 includes a first transmission gate 1311 , the second detection unit 131 includes a second transmission gate 1321 , and the switching unit 133 includes a first inverter 1331 and a second inverter 1332 .

[0044] Among them, the first connection end of the first transmission gate 1311 is connected to the main control circuit 12, the second connection end of the first transmission gate 1311 is connected to the button 11, the first connection end of the second transmission gate 1321 is connected to the main control circuit 12, and the second connection end of the second transmission gate 1321 is connected to the button 11; the input end of the first inverter 1331 is connected to the charging circuit 15, the output end of the first inverter 1331 is connected to the control end of the first transmission gate 1311, the inverting control end of the second transmission gate 1321 and the input end of the second inverter 1332, and the output end of the second inverter 1332 is connected to the inverting control end of the first transmission gate 1311 and the control end of the second transmission gate 1321.

[0045] It should be understood that the switching unit 133 includes a first inverter 1331 and a second inverter 1332 connected in series. In the operation mode, when the charging circuit 15 is not connected to the charging power supply, the charging circuit 15 sends a low level signal to the input end of the first inverter 1331, and the output end of the first inverter 1331 outputs a high level signal to the control end of the first transmission gate 1311 and the inverting control end of the second transmission gate 1321. The second inverter 1332 outputs a low level signal to the inverting control end of the first transmission gate 1311 and the control end of the second transmission gate 1321. The first transmission gate 1311 is turned on when the control end is high and the inverting control end is low. At this time, the control end of the second transmission gate 1321 is low and the inverting control end is high, so the second transmission gate 1321 is turned off, and the main control circuit 12 detects the state of the key 11 through the turned-on first transmission gate 1311 to receive the key state detection signal.

[0046] In the charging mode, when the charging circuit 15 is connected to the charging power supply, the charging circuit 15 sends a high-level signal to the output end of the first inverter 1331, the output end of the first inverter 1331 outputs a low-level signal, and the output end of the second inverter 1332 outputs a high-level signal. At this time, the control end of the first transmission gate 1311 is at a low level, the inverting control end is at a high level and is turned off, the control end of the second transmission gate 1321 is at a high level, and the inverting control end is at a low level and is turned on, thereby realizing the switching of the working states of the first transmission gate 1311 and the second transmission gate 1321. In this case, the main control circuit 12 detects the state of the button 11 through the second transmission gate 1321 to receive a reset signal. By setting the first inverter 1331 and the second inverter 1332 in the switching unit 133, the main control circuit 12 can receive different signals through different detection units in different situations, thereby realizing the multiplexing of a single button 11. It should be noted that in the shipping mode, the charging circuit 15 is not connected to the charging power supply. It can be seen that the first transmission gate 1311 is turned on and the second transmission gate 1321 is turned off. However, since the main control circuit 12 is in a power-off state in the shipping mode, it will not respond to the received signal.

[0047] By setting the first inverter 1331 and the second inverter 1332 in the switching unit 133, when the main control circuit 12 is in the running mode, the button 11 has a preset control function, and when the main control circuit 12 is in the charging mode, the button 11 has a reset function, thereby realizing the multiplexing of the button 11, without setting the button 11 for each function, and reducing the number of button 11 settings.

[0048] See also Figure 4 , Figure 4 A schematic diagram of a key circuit 10 provided in yet another embodiment of the present application.

[0049] In some embodiments, the first detection circuit 13 also includes a first anti-reverse unit 134, the first end of the first anti-reverse unit 134 is connected to the first detection unit 131 and the second detection unit 131, and the second end of the first anti-reverse unit 134 is used to connect the battery component 16 and the button 11; the first anti-reverse unit 134 is used to prevent the current provided by the battery component 16 from flowing back to the first transmission unit and the second transmission unit when the button 11 is released.

[0050] In a specific implementation process, one end of the button 11 is connected to the battery assembly 16, and the other end is grounded, so that the main control circuit 12 can detect the state of the button 11 according to the first detection unit 131 or the second detection unit 131. Specifically, when the button 11 is pressed, a low-level signal is sent to the first detection unit 131 or the second detection unit 131, and when the button 11 is released, a high-level signal is sent to the first detection unit 131 or the second detection unit 131, so that the main control circuit 12 determines the state of the button 11 and performs corresponding operations according to the high-level signals or low-level signals received from different detection units.

[0051] According to the above configuration, when the button 11 is in a released state, there is a risk that the current provided by the battery assembly 16 will flow back to the first detection unit 131 or the second detection unit 131. By providing a first anti-reverse unit 134 connected between the first detection unit 131 and the button 11, and between the second detection unit 131 and the button 11, the current provided by the battery assembly 16 can be prevented from flowing back to the first detection unit 131 and the second detection unit 131 when the button 11 is in a released state, so as to achieve the purpose of protecting the first detection unit 131 and the second detection unit 131.

[0052] For example, the first anti-reverse unit 134 includes a first diode, an anode of the first diode is connected to the first detection unit 131 and the second detection unit 131 , and a cathode of the first diode is connected to the battery assembly 16 and the button 11 .

[0053] See also Figure 5 , Figure 5 A schematic diagram of a key circuit 10 provided in accordance with an embodiment of the present application.

[0054] In some embodiments, the main control circuit 12 includes a power supply branch 121, a charging integrated branch 122 and a controller branch 123; the first end of the power supply branch 121 is connected to the battery assembly 16 through the second detection circuit 14, the first end of the power supply circuit is also connected to the battery assembly 16 through the charging integrated branch 122, and the second end of the power supply circuit is connected to the controller branch 123.

[0055] Among them, the second detection circuit 14 is used to be turned on in response to the pressing operation of the button 11 in the transport mode, so that the battery assembly 16 outputs a first power supply signal to the power supply branch 121, and the power supply branch 121 is used to supply power to the controller branch 123 according to the first power supply signal; the controller branch 123 is used to be in the transport mode, and when it receives the first power supply signal, output a power supply conduction signal to the charging integrated branch 122, and the charging integrated branch 122 is used to output a second power supply signal to the power supply branch 121 based on the power supply conduction signal and using the electric energy provided by the battery assembly 16, so that the power supply branch 121 supplies power to the controller branch 123 according to the second power supply signal, so that the main control circuit 12 enters the operation mode from the transport mode.

[0056] In a specific implementation process, the controller branch 123 is also connected to the first detection circuit 13 through different connection terminals to perform corresponding operations in response to the signal sent by the first detection circuit 13. The battery assembly 16 can supply power to the controller branch 123 through the power supply branch 121, so that the controller branch 123 can perform operations in response to the signal.

[0057] In the transport mode, since the controller branch 123 needs to be in a power-off state, the second detection circuit 14 and the charging integrated branch 122 connecting the battery assembly 16 and the power supply branch 121 are both turned off. At this time, if the button 11 is pressed, the second detection unit 131 is turned on in response to the pressing operation of the button 11, and the battery assembly 16 provides a first power supply signal to the power supply branch 121 through the turned-on second detection unit 131, so that the power supply branch 121 supplies power to the controller branch 123 based on the first power supply signal to start the controller. controller branch 123; and the controller branch 123 sends a power supply turn-on signal to the charging integrated branch 122 after startup, and the charging integrated branch 122 is turned on in response to the power supply turn-on signal. After the charging integrated branch 122 is turned on, the battery assembly 16 can also provide a second power supply signal to the power supply branch 121 through the turned-on charging integrated branch 122, so that the power supply branch 121 supplies power to the controller branch 123 based on the second power supply signal, thereby completing the startup of the controller branch 123 to enter the operation mode from the transportation mode.

[0058] It should be noted that, in the operation mode, the second detection circuit 14 is turned on in response to the pressing of the button 11, and the power supply branch 121 can receive the first power supply signal output from the second detection circuit 14 and the second power supply signal output from the charging integrated branch 122. When the second detection circuit 14 is turned off in response to the release of the button 11, although the second detection circuit 14 stops outputting the first power supply signal to the power supply branch 121, the power supply branch 121 can still receive the second power supply signal through the charging integrated branch 122. Therefore, after entering the operation mode, regardless of the second detection circuit 14, the power supply branch 121 can receive the first power supply signal output from the second detection circuit 14 and the second power supply signal output from the charging integrated branch 122. Whether the circuit 14 is turned on or not, the power supply branch 121 can supply power to the controller branch 123 based on the second power supply signal, that is, the pressing and releasing of the button 11 in the operating mode will not affect the power supply of the controller branch 123. Therefore, in the operating mode, the controller branch 123 can detect the state of the button 11 through the port connected to the first detection circuit 13, thereby performing corresponding operations to realize the control of the circuit or the smart ring; it can be seen that the button 11 has the start function, preset control function and reset function, which realizes the multi-functional multiplexing of a single button 11.

[0059] See also Figure 6 , Figure 6 A schematic diagram of a key circuit 10 provided in accordance with another embodiment of the present application.

[0060] In some embodiments, the charging integrated branch 122 includes a power supply unit 1221 and a control unit 1222; the first end of the power supply unit 1221 is connected to the battery assembly 16, the second end of the power supply unit 1221 is connected to the power supply branch 121, and the control unit 1222 is connected to the control end of the power supply unit 1221; wherein the control unit 1222 is used to control the power supply unit 1221 to be turned off in the transport mode; and when receiving the power supply turn-on signal output by the controller branch 123, the power supply unit 1221 is controlled to be turned on, so that the turned-on power supply unit 1221 provides a second power supply signal to the power supply branch 121.

[0061] In a specific implementation process, the control unit 1222 is used to respond to the transport mode start instruction, turn off the power supply unit 1221, and the second detection circuit 14 is turned off in response to the release operation of the button 11, and the battery assembly 16 cannot provide a power supply signal to the power supply branch 121, so that the controller branch 123 is powered off and enters the transport mode; while in the transport mode, the second detection circuit 14 is turned on in response to the pressing operation of the button 11, and the battery assembly 16 first provides a first power supply signal to the power supply branch 121 through the turned-on second detection circuit 14 to supply power to the controller branch 123, thereby starting the controller branch 123, and the controller branch 123 is turned on. After startup, circuit 123 sends a power supply turn-on signal to the control unit 1222, so that the control unit 1222 controls the power supply unit 1221 to be turned on in response to the power supply turn-on signal, thereby enabling the power supply component to provide a second power supply signal to the power supply branch 121 through the turned-on power supply unit 1221, so as to provide stable power supply to the controller branch 123 and enter the operation mode. At this time, the power supply status of the controller branch 123 will not be affected by the on and off of the second detection circuit 14, thereby avoiding the situation where the second detection circuit 14 cannot supply power to the controller branch 123 when it is turned off in response to the release of the button 11, thereby realizing the reuse of the button 11.

[0062] Please continue reading Figure 6 In some embodiments, the charging integrated branch 122 further includes a charging unit 1223 , a first end of the charging unit 1223 is connected to the charging circuit 15 , a second end of the charging unit 1223 is connected to a second end of the power supply unit 1221 , and a control end of the charging unit 1223 is connected to the control unit 1222 .

[0063] Among them, the control unit 1222 is also used to control the charging unit 1223 to be turned on in the charging mode, so that the charging power supply can charge the battery assembly 16 through the turned-on charging unit 1223 and the power supply unit 1221; the control unit 1222 is also used to control the charging unit 1223 to be turned off in the transportation mode or the operation mode.

[0064] In a specific implementation process, if the battery assembly 16 needs to be charged, the battery assembly 16 is charged through the charging circuit 15 and the charging unit 1223 and the power supply unit 1221 in the charging integrated branch 122. Specifically, the charging circuit 15 is used to access the charging power supply, and after the charging power supply is accessed, the control unit 1222 controls the charging unit 1223 to be turned on, and the charging current provided by the charging power supply charges the battery assembly 16 through the turned-on charging unit 1223 and the power supply unit 1221, so as to realize the charging of the battery assembly 16. After exiting the charging mode or disconnecting the charging power supply from the charging circuit 15, the control unit 1222 turns off the charging unit 1223.

[0065] See also Figure 7 , Figure 7 A schematic diagram of a key circuit 10 provided in yet another embodiment of the present application.

[0066] In some embodiments, the second detection circuit 14 includes a switch unit 141 and a second anti-reverse unit 142; the controlled end of the switch unit 141 is connected to the button 11, the first end of the switch unit 141 is connected to the battery assembly 16, the second end of the switch unit 141 is connected to the first end of the second anti-reverse unit 142, and the second end of the second anti-reverse unit 142 is connected to the main control circuit 12.

[0067] Among them, the switch unit 141 is used to be turned on when the button 11 is pressed, so that in the on state, the electric energy provided by the battery assembly 16 is used to provide a first power supply signal to the main control circuit 12. The switch unit 141 is also used to be turned off when the button 11 is released to stop outputting the first power supply signal; the second anti-reverse unit 142 is used to prevent the charging current provided by the charging power supply from flowing through the switch unit 141 and being output to the battery assembly 16 in the charging mode.

[0068] In a specific implementation process, the switch unit 141 is turned on in response to pressing the button 11, so that the battery assembly 16 provides a first power supply signal to the main control circuit 12 through the turned-on switch unit 141; and is turned off when the button 11 is released. Although the battery assembly 16 cannot provide the first power supply signal to the main control circuit 12 through the switch unit 141, it can be seen from the aforementioned embodiment that after the main control circuit 12 is started, the power supply unit 1221 in the main control circuit 12 is controlled to be turned on, so that the battery assembly 16 can supply power to the controller branch 123 in the main control circuit 12 through the turned-on power supply unit 1221, so that the switch unit 141 will not affect the power supply state of the controller branch 123 after startup.

[0069] In the specific implementation process, since one end of the second detection circuit 14 is connected to the first end of the power supply branch 121, the first end of the power supply branch 121 is also connected to the charging unit 1223 and the power supply unit 1221 in the charging integrated branch 122, and in the charging mode, the charging current provided by the charging power supply charges the battery assembly 16 through the charging unit 1223 and the power supply unit 1221. At this time, since the second detection circuit 14, the charging unit 1223 and the power supply unit 1221 are all connected to the same end, and the button 11 is in an unreset state when it is pressed, the charging current will be charged to the battery assembly through the turned-on switch unit 141. 16 is charged, thereby bypassing the charging protection mechanism in the charging integrated branch 122, which is easy to cause damage to the battery assembly 16 and cause safety problems. By setting a second anti-reverse unit 142 in the second detection circuit 14, the charging current can be prevented from charging the battery through the turned-on switch unit 141, so that the charging power supply can only charge the battery assembly 16 through the charging unit 1223 and the power supply unit 1221, so that the control unit 1222 in the charging integrated branch 122 can monitor the charging status, avoid damaging the battery assembly 16 and make the key circuit 10 comply with the compliance review problem, thereby improving the safety of the key circuit 10.

[0070] For example, the switch unit 141 includes a transistor, and the second anti-reverse unit 142 includes a second diode; the gate of the transistor is connected to the button 11, the source of the transistor is connected to the battery assembly 16, the drain of the transistor is connected to the anode of the second diode, and the cathode of the second diode is connected to the power supply branch 121. The transistor can be turned on in response to pressing the button 11, and turned off in response to releasing the button 11, and the second diode can prevent the charging current output by the charging unit 1223 from charging the battery assembly 16 through the turned-on transistor.

[0071] See also Figure 8 , Figure 8 A schematic diagram of a key circuit 10 provided in accordance with an embodiment of the present application.

[0072] In some embodiments, the button 11 includes a button switch, one end of which is connected to the power supply component, the first detection circuit 13 and the second detection circuit 14, and the other end of the button switch is grounded.

[0073] Among them, the key switch is turned off when the key 11 is released, and the first detection circuit 13 is used to send a first key state detection signal to the main control circuit 12 according to the voltage signal provided by the power supply component when the key switch is in the operating mode and the key switch is turned off; the key switch is closed when the key 11 is pressed, and the first detection circuit 13 is also used to send a second key state detection signal to the main control circuit 12 when the key switch is closed in the operating mode, and the first detection circuit 13 is also used to send a reset signal to the main control circuit 12 when the key switch is turned off in the charging mode; the second detection circuit 14 is used to provide a first power supply signal to the main control circuit 12 when the key switch is closed in the transport mode.

[0074] Exemplarily, the key 11 is connected to the key circuit 10 through a key switch, and one end of the key switch is connected to the power supply component and the other end is grounded, so that when the key 11 is pressed, a low-level signal is output, and when the key 11 is released, a high-level signal is output.

[0075] In the specific implementation process, Figure 8 The circuit shown is used as an example for explanation. In the transport mode, the charging circuit 15 is not connected to the charging power supply, the switching unit 133 in the first detection circuit 13 controls the first detection unit 131 to be turned on, and when the button 11 is in the released state, the second detection circuit 14 and the power supply unit 1221 in the charging integrated branch 122 are both turned off, and the controller branch 123 is in the power-off state. At this time, if the button 11 is pressed, the controlled end of the switch unit 141 in the second detection circuit 14 is set to a low level, the switch unit 141 is turned on, and the battery assembly 16 supplies power to the controller branch 123 through the turned-on switch unit 141 to start the controller branch 123. After the controller branch 123 is started, a power supply turn-on signal is sent to the charging integrated branch 122 to turn on the power supply unit 1221. The battery assembly 16 supplies power to the controller branch 123 through the turned-on power supply unit 1221, and enters the operation mode. Specifically, the switch unit 141 includes a transistor. It should be understood that in the above process of entering the operating mode from the transport mode, the button 11 realizes the function of starting the circuit.

[0076] After entering the operation mode, the charging circuit 15 is still not connected to the charging power supply, and the switching unit 133 still controls the first detection unit 131 to be turned on. Since the first detection unit 131 is connected to one end of the key switch, when the key 11 is pressed, the first detection unit 131 can send a low-level signal to the controller branch 123, and when the key 11 is released, the first detection unit 131 sends a high-level signal to the controller branch 123, so that the controller branch 123 can respond to the high-level signal or the low-level signal, or the number of times the high-level signal and / or the low-level signal appears within a preset time period, and perform a corresponding operation. In this process, since the controller branch 123 can be powered by the turned-on power supply unit 1221, even if the switch unit 141 in the second detection circuit 14 is turned on or off due to the pressing and releasing of the key 11, it will not affect the power supply state of the controller branch 123. The controller branch 123 can respond to the low-level signal or the high-level signal output by the first detection unit 131 to perform a corresponding operation. It should be understood that, in the above operation mode, the button 11 realizes the function of circuit control.

[0077] In the charging mode, the charging circuit 15 is connected to the charging power supply, the switching unit 133 controls the first detection unit 131 to be turned off, and turns on the second detection unit 131. At this time, the power supply branch 121 supplies power to the controller branch 123 through the charging current output by the charging unit 1223, and the charging current output by the charging unit 1223 can charge the battery assembly 16 through the turned-on power supply unit 1221, and due to the second anti-reverse unit 142 in the second detection circuit 14, the charging current cannot charge the battery assembly 16 through the second detection circuit 14, thereby ensuring the charging safety. The controller branch 123 can also detect the state of the button 11 through the second detection unit 131, so as to perform a reset action in response to the low-level signal output by the second detection unit 131 when the button 11 is released; it can be seen that in the above-mentioned charging mode, the button 11 realizes the function of circuit reset.

[0078] For example, the charging integrated branch 122 can be provided by a Charger IC, the switch unit 141 includes a transistor Q1, the first anti-reverse unit 134 includes a first diode D1, and the second anti-reverse unit 142 includes a second diode D2; it should be understood that the specific electronic components of the above-mentioned charging integrated branch 122, the switch unit 141, the first anti-reverse unit 134 and the second anti-reverse unit 142 are all exemplary descriptions, and those skilled in the art can set other electronic components with the same functions as needed, which is not limited here.

[0079] See also Fig. 9 , Fig. 9 A schematic diagram of a smart ring provided in accordance with an embodiment of the present application.

[0080] like Fig. 9As shown, the smart ring at least includes a button and a button circuit 10 connected to the button. The button can realize the function of the smart ring exiting the transportation mode and entering the operation mode, the function of controlling the smart ring in the operation mode, and the function of resetting in the charging mode, thereby realizing the multi-functional multiplexing of a single button, and there is no need to set multiple function buttons on the smart ring, which is conducive to the simplification of the internal circuit of the smart ring and the miniaturization of the smart ring.

[0081] It should be understood that the terms used in this application specification are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in this application specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0082] It should also be understood that the term "and / or" used in the specification of this application and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations. It should be noted that, in this article, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "including a..." does not exclude the presence of other identical elements in the process, method, article or system including the element.

[0083] The serial numbers of the embodiments of the present application are for description only and do not represent the advantages and disadvantages of the embodiments. The above description is only a specific implementation mode of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A key circuit, characterized in that: Applied to a smart ring, the smart ring is provided with a button, and the button circuit includes: Main control circuit; A first detection circuit, the first detection circuit is used to connect the charging circuit, the main control circuit and the button; A second detection circuit, the second detection circuit is used to connect the button and the main control circuit; Wherein, the first detection circuit is used to send a key state detection signal to the main control circuit when detecting that the charging circuit is not connected to a charging power source, and the main control circuit performs a corresponding function operation based on the key state detection signal sent by the first detection circuit in the running mode, and the main control circuit enters the running mode from the shipping mode based on the pressing operation of the key detected by the second detection circuit in the shipping mode; The first detection circuit is used to send a reset signal to the main control circuit when detecting that the charging circuit is connected to the charging power supply. In the charging mode, the main control circuit performs a reset action based on the reset signal sent by the first detection circuit.

2. The key circuit according to claim 1, characterized in that: The first detection circuit includes a first detection unit, a second detection unit and a switching unit; The first detection unit is connected to the button and the main control circuit, and the first detection unit is used to send a button state detection signal to the main control circuit when the main control circuit is in the operating mode; The second detection unit is connected to the button and the main control circuit, and the second detection unit is used to send a reset signal to the main control circuit when the main control circuit is in a charging mode; The switching unit is connected to the first detection unit, the second detection unit and the charging circuit. The switching unit is used to control the first detection unit to be turned on and the second detection unit to be turned off when the charging circuit is not connected to the charging power supply. The switching unit is also used to control the first detection unit to be turned off and the second detection unit to be turned on when the charging circuit is connected to the charging power supply.

3. The key circuit according to claim 2, characterized in that: The first detection unit includes a first transmission gate, the second detection unit includes a second transmission gate, and the switching unit includes a first inverter and a second inverter; The first connection end of the first transmission gate is connected to the main control circuit, the second connection end of the first transmission gate is connected to the button, the first connection end of the second transmission gate is connected to the main control circuit, and the second connection end of the second transmission gate is connected to the button; The input end of the first inverter is connected to the charging circuit, the output end of the first inverter is connected to the control end of the first transmission gate, the inverting control end of the second transmission gate and the input end of the second inverter, and the output end of the second inverter is connected to the inverting control end of the first transmission gate and the control end of the second transmission gate.

4. The key circuit according to claim 2, characterized in that: The first detection circuit further includes a first anti-reverse unit, a first end of the first anti-reverse unit is connected to the first detection unit and the second detection unit, and a second end of the first anti-reverse unit is used to connect the battery assembly and the button; The first anti-reverse unit is used to prevent the current provided by the battery assembly from flowing back to the first transmission unit and the second transmission unit when the key is released.

5. The key circuit according to any one of claims 1 to 4, characterized in that: The main control circuit includes a power supply branch, a charging integrated branch and a controller branch; The first end of the power supply branch is connected to the battery assembly through the second detection circuit, the first end of the power supply circuit is also connected to the battery assembly through the charging integrated branch, and the second end of the power supply circuit is connected to the controller branch; Wherein, the second detection circuit is used to, in the transport mode, respond to the pressing operation of the button, output a first power supply signal to the power supply branch using the electric energy provided by the battery assembly, and the power supply branch is used to supply power to the controller branch according to the first power supply signal; the controller branch is used to, in the transport mode, and when receiving the first power supply signal, output a power supply conduction signal to the charging integrated branch, and the charging integrated branch is used to output a second power supply signal to the power supply branch based on the power supply conduction signal using the electric energy provided by the battery assembly, so that the power supply branch supplies power to the controller branch according to the second power supply signal, so that the main control circuit enters the operation mode from the transport mode.

6. The key circuit according to claim 5, characterized in that: The charging integrated branch includes a power supply unit and a control unit; the first end of the power supply unit is connected to the battery assembly, the second end of the power supply unit is connected to the power supply branch, and the control unit is connected to the control end of the power supply unit; The control unit is used to control the power supply unit to shut down in the transport mode; and when receiving the power supply turn-on signal output by the controller branch, control the power supply unit to turn on, so that the turned-on power supply unit provides the second power supply signal to the power supply branch.

7. The key circuit according to claim 6, characterized in that: The charging integrated branch further includes a charging unit, a first end of the charging unit is connected to the charging circuit, a second end of the charging unit is connected to the second end of the power supply unit, and a control end of the charging unit is connected to the control unit; The control unit is also used to control the charging unit to be turned on in the charging mode, so that the charging power source charges the battery assembly through the turned-on charging unit and the power supply unit; The control unit is further configured to control the charging unit to be turned off in the transport mode or the operating mode.

8. The key circuit according to any one of claims 1 to 4, characterized in that: The second detection circuit includes a switch unit and a second anti-reverse unit; the controlled end of the switch unit is connected to the button, the first end of the switch unit is connected to the battery assembly, the second end of the switch unit is connected to the first end of the second anti-reverse unit, and the second end of the second anti-reverse unit is connected to the main control circuit; The switch unit is used to be turned on when the button is pressed, so as to provide a first power supply signal to the main control circuit using the power provided by the battery assembly in the turned-on state, and the switch unit is also used to be turned off when the button is released, so as to stop outputting the first power supply signal; The second anti-reverse unit is used to prevent the charging current provided by the charging power source from flowing through the switch unit and being output to the battery assembly in the charging mode.

9. The key circuit according to any one of claims 1 to 4, characterized in that: The button includes a button switch, one end of which is connected to the power supply component, the first detection circuit and the second detection circuit, and the other end of which is grounded; The key switch is turned off when the key is released, and the first detection circuit is used to send a first key state detection signal to the main control circuit according to the voltage signal provided by the power supply component when the key switch is turned off in the operating mode; The key switch is closed when the key is pressed, and the first detection circuit is also used to send a second key status detection signal to the main control circuit when the key switch is closed in the operating mode. The first detection circuit is also used to send a reset signal to the main control circuit when the key switch is turned off in the charging mode; the second detection circuit is used to provide a first power supply signal to the main control circuit when the key switch is closed in the transport mode.

10. A smart ring, characterized in that: The smart ring at least includes a button and a button circuit as described in any one of claims 1 to 9, and the button is connected to the button circuit.

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