CN110764398B - Intelligent watch and mode switching method thereof - Google Patents
Intelligent watch and mode switching method thereof Download PDFInfo
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- CN110764398B CN110764398B CN201810836679.6A CN201810836679A CN110764398B CN 110764398 B CN110764398 B CN 110764398B CN 201810836679 A CN201810836679 A CN 201810836679A CN 110764398 B CN110764398 B CN 110764398B
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- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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Abstract
The embodiment of the invention provides an intelligent watch and a mode switching method thereof, wherein an enabling control unit is arranged in the intelligent watch, and the enabling control unit is respectively provided with two control signal input circuits and two power supply access circuits. When the power management unit receives a high-level voltage signal output by the master control unit and/or the slave control unit, an enable signal can be output for the power management unit electrically connected with the power management unit, and the enable power management unit provides power voltage for the slave control unit. When the power management unit is in a power-on state under the action of the main control unit, the slave control unit outputs a high-level voltage signal to control the power management unit to provide power voltage for the slave control unit. At this point, the power-on state of the master control unit will no longer have an effect on the power-on state of the slave control unit. When the intelligent watch is in a mode with lower task load, unnecessary energy consumption is saved for the intelligent watch.
Description
Technical Field
The disclosure relates to the technical field of smart watches, in particular to a smart watch and a mode switching method thereof.
Background
The smart watch, as a wearable mobile device, has one or more data processing functions such as reminding, navigation, monitoring, interaction and the like in addition to a time indicating function, and because the design space of the smart watch is limited, the battery capacity of the smart watch is inevitably limited, so that contradictions are generated between the data processing function with high power consumption and a low-capacity battery. Therefore, how to improve the endurance of the smart watch to the maximum extent under the limited battery capacity becomes a difficult problem to be solved urgently.
Therefore, the conventional smart watch is generally divided into an operation mode, a standby mode and a shutdown mode, and a main processor and a secondary processor are arranged to correspondingly execute task instructions with different modes and different power consumptions, wherein the main processor has high processing performance and high power consumption, and is mainly used for executing high-load tasks (such as displaying a map, calculating real-time parameters, synchronizing data, displaying communication information and the like), so that the smart watch can smoothly run various complex application programs, and is in the operation mode at the moment. The slave processors have weak processing performance but low power consumption, and are mainly used for performing low-load tasks (for example, processing sensor data in a standby state). Therefore, when a low-load task is processed, the working frequency of the main processor is greatly reduced, and the power consumption of the intelligent watch is reduced to a certain extent.
However, in the existing solution, the master processor still needs to be in the power-on state in the standby state to supply power to the slave processor, and identify different task types (high-load task or low-load task) so as to control the slave processor to respond to the low-load task. The continuous power-on state of the main processor undoubtedly increases the power consumption of the smart watch.
Disclosure of Invention
The embodiment of the invention provides an intelligent watch and a mode switching method thereof, and aims to solve the problem that in the prior art, the energy consumption of the intelligent watch is increased due to the fact that a main processor is in a continuous power-on state.
In a first aspect, the present invention provides a smart watch comprising:
a master control unit, a slave control unit, an enable control unit and a power management unit, wherein,
the control signal output end of the master control unit and the control signal output end of the slave control unit are both connected with the input end of the enable control unit, so that the enable control unit outputs an enable signal from the output end of the enable control unit when receiving a high level signal input by the master control unit and/or the slave control unit;
the master control unit is electrically connected with the slave control unit through a first interface, so that the master control unit controls the slave control unit to output a high-level signal to the input end of the enabling control unit through the first interface before a power supply circuit of the master control unit is closed;
the output end of the enabling control unit is connected with the enabling end of the power management unit, so that the power management unit outputs power supply voltage from the output end of the power management unit under the enabling of the enabling control unit;
the output end of the power supply management unit is connected with the power supply access end of the slave control unit;
any one of a power supply circuit and a power management unit of the main control unit can supply power to the enabling control unit.
In a second aspect, the present invention further provides a mode switching method for a smart watch, including:
after the main control unit receives a trigger instruction for switching from a shutdown mode to an operation mode, a power supply circuit of the main control unit supplies power to the enable control unit and outputs a high-level signal to an input end of the enable control unit, and the enable control unit enables the power management unit to output power supply voltage to the slave control unit;
the method comprises the following steps that after a trigger instruction for switching from an operation mode to a watch mode is received by a master control unit, a slave control unit is controlled by a first interface to output a high-level signal to an input end of an enable control unit, and after a first confirmation instruction fed back by the slave control unit is received by the master control unit, a power supply circuit of the master control unit is closed;
the power management unit supplies power to the enabling control unit.
The beneficial effect of this application is as follows:
the application provides an enable control unit is arranged in an intelligent watch, and the enable control unit is provided with two paths of control signal input lines respectively. When the enabling control unit receives the high-level voltage signal output by the master control unit and/or the slave control unit, the enabling control unit can output an enabling signal to enable the power management unit to output the power voltage. Therefore, in the application, the voltage output of the power management unit is respectively controlled by two circuits, so that after the power management unit is in a power-on state under the action of the enable signal output by the main control unit, the power management unit can be controlled to provide power voltage for the slave control unit by outputting a high-level voltage signal from the slave control unit. At this point, the power-on state of the master control unit will no longer have an effect on the power-on state of the slave control unit. Meanwhile, any one of the power supply circuit and the power management unit of the main control unit can supply power to the enabling control unit, namely, the enabling control unit can still continue to work under the power supply of the power management unit even if the main control unit does not work. Through the circuit design and the function implementation mode, the slave control unit can be independently operated when the main control unit is in a power-down mode, so that unnecessary energy consumption is saved for the intelligent watch when the intelligent watch is in a mode with lower task load.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a circuit block diagram of a smart watch according to an embodiment of the present application;
fig. 2 is a circuit block diagram of another smart watch provided in an embodiment of the present application;
fig. 3 is a flowchart of a mode switching method of a smart watch according to an embodiment of the present application;
fig. 4 is a flowchart of another mode switching method for a smart watch according to an embodiment of the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, a circuit diagram of a smart watch according to an embodiment of the present application is shown. As can be seen from fig. 1, the smart watch provided in this embodiment includes: the system comprises a master control unit 10, a slave control unit 20, an enable control unit 60 and a power management unit 30, wherein the master control unit 10 is electrically connected to the slave control unit 20 through a first Interface, so as to control the slave control unit 20 by the master control unit 10 and realize feedback of a response of the slave control unit 20 to a control instruction, in this embodiment, the first Interface may be a common processor Interface such as an SPI Interface (full name of Serial Peripheral Interface, Serial Peripheral Interface), a Serial port (UART Interface), or an I2C Interface. The slave control unit 20 may be a SensorHUB (chinese name: intelligent sensing hub) for connecting and processing data from various sensor devices, and the slave control unit 20 is also connected with a plurality of sensors for collecting and processing related sensor data in practical applications.
The control signal output terminal 201 of the master control unit 10 and the control signal output terminal 211 of the slave control unit 20 are both connected to the input terminal 221 of the enable control unit, so that the enable control unit outputs an enable signal (e.g. a high level signal) from the output terminal 22 of the enable control unit when receiving a high level signal input by the master control unit and/or the slave control unit; the output terminal 23 of the power management unit 30 is electrically connected to the power input terminal 212 of the slave control unit 20. The output terminal 22 of the enable control unit is connected with the enable terminal EN of the power management unit, so that the power management unit outputs the power voltage from the output terminal 23 of the power management unit under the enable of the enable control unit, thereby supplying power to the slave control unit 20.
In this embodiment, the enable control unit 60 is provided with two enable control signal input lines, which are respectively an input end from the main control unit 10 (the control signal output end 201) to the enable control unit and an input end from the control unit 20 to the enable control unit, and when the enable control unit receives a high level voltage signal input by the main control unit and/or the slave control unit, the enable control unit can output an enable signal, and the enable power management unit outputs the power supply voltage.
In this embodiment, any one of the power supply circuit and the power management unit of the main control unit can supply power to the enable control unit
Therefore, in the application, the voltage output of the power management unit is respectively controlled by two circuits, so that after the power management unit is in the power-on state under the action of the main control unit, the slave control unit is controlled to output the high-level voltage signal through the first interface, and the power-on state of the main control unit does not influence the power-on state of the slave control unit any more. Meanwhile, even if the main control unit does not work, the enabling control unit can still continue to work under the power supply of the power management unit. Through the circuit design and the function implementation mode, the slave control unit can be independently operated when the main control unit is in a power-down mode, so that unnecessary energy consumption is saved for the intelligent watch when the intelligent watch is in a mode with lower task load.
Example two
Referring to fig. 2, a circuit diagram of another smart watch according to an embodiment of the present application is shown. As can be seen from fig. 2, in the present embodiment, the enable control unit includes a logic or gate circuit 22, wherein a first input terminal a of the logic or gate circuit is electrically connected to the control signal output terminal 201 of the master control unit 20, and a second input terminal B of the logic or gate circuit is electrically connected to the control signal output terminal 211 of the slave control unit 21. The output terminal Y of the logical or gate circuit is electrically connected to the enable terminal EN of the power management unit 23. The logical or gate outputs an enable signal when the control signal output terminal of the main control unit 20 and/or the control signal output terminal of the slave control unit output a high level voltage signal. In this embodiment, the master control unit and the slave control unit simultaneously control the logic or gate circuit, thereby implementing dual control of the enable control unit.
In general, the power supply voltage of the master control unit and the slave control unit is 1.8V, the high level voltage output by the logical or gate circuit is about 1.4V, and is used for controlling the on/off of the power management circuit 23 (DC-DC), the power supply of the DC-DC is the power supply of the VIN pin, that is, the battery voltage is directly supplied, and the DC-DC converts the battery voltage into the low voltage of 1.8V to supply power to the slave control unit. The power supply access end 221 of the logic or gate circuit 31 is electrically connected with the power supply output end 202 of the main control unit and the output end VOUT of the power supply management unit respectively, and the output end VOUT of the power supply management unit is electrically connected with the power supply access end 212 of the slave control unit. The two paths of power access circuits can independently supply power for the logic OR gate circuit, so that the opening of the logic OR gate circuit and the power supply of the subsequent power management unit for the slave control unit can be incompletely controlled by the main control unit, the existing power management unit does not need to be changed, and the common enabling of two paths of enabling signals of the main control unit and the slave control unit to the power management circuit is realized.
Further, the smart watch further comprises a display unit 24, and the display unit is electrically connected with the main control unit through a third interface; the display unit is electrically connected with the slave control unit through a second interface. The second interface and the third interface can respectively realize data transmission and other display control of the main control unit and the slave control unit to the display unit. In this embodiment, the second Interface may be an MIPI Interface (Mobile Industry Processor Interface) or an SPI Interface, and the third Interface may be an SPI Interface or an MIPI Interface. In other embodiments of this application, display element also can set up a two way SPI interfaces, connects main control unit and slave control unit respectively electrically, perhaps, sets up an SPI interface, switches between main control unit and slave control unit through the switch, and above two kinds of modes are the replacement scheme of the second interface that sets up alone in this embodiment and third interface, and the homoenergetic realizes main control unit and slave control unit to display element's display control. In this embodiment, the display unit may include a display screen and a processor, and one end of the processor is connected to the display screen, and the other end of the processor is electrically connected to the master control unit or the slave control unit.
In the prior art, the slave control unit and the display unit are not connected, but the slave control unit and the display unit are connected through the second interface, so that when the master control unit is powered off and the slave control unit works independently, a user can still interact with the smart watch through the display unit 40.
The logic or gate circuit is provided with two paths of power supply circuits, when the power supply circuit of the main control unit supplies power for the logic or gate circuit alone, or when the power management circuit supplies power for the logic or gate circuit alone, the current supplied by the power management circuit alone may flow to another path of circuit without power supply, so that adverse effect is easily generated on the power supply of the other path of circuit without power supply, and the normal power supply of the logic or gate circuit is finally affected.
Therefore, in order to effectively isolate the two power supply circuits of the logic or gate circuit and prevent the two power supply circuits from having crosstalk, the present embodiment is provided with a first diode 25 and a second diode 26, wherein the first diode 25 is disposed between the power supply circuit of the main control unit and the logic or gate circuit, specifically, the anode of the first diode is electrically connected to the power output terminal 202 of the main control unit (as shown by the dotted line in fig. 2), and the cathode of the first diode is electrically connected to the power input terminal 221 of the logic or gate circuit. The second diode 26 is disposed between the power management circuit and the logic or gate circuit, specifically, an anode of the second diode is electrically connected to the output end of the power management circuit (as shown by a dotted line in fig. 2), and a cathode of the second diode is electrically connected to the power input end 221 of the logic or gate circuit. The embodiment utilizes the characteristic that the diode only allows current to flow from a single direction, and can effectively prevent crosstalk between two power supply circuits of the logic or gate circuit.
Further, the smart watch provided in this embodiment further includes a starting circuit 27, one end of the starting circuit is grounded, the other end of the starting circuit is connected to the master control unit through the first key pin 203, and is connected to the slave control unit through the second key pin 213, and the starting circuit further includes a starting button 271, and the starting button is used for controlling a grounded state of the starting circuit. When the starting key is pressed down, the starting circuit is in a grounding state, at the moment, the first key pin and the second key pin are in a low level state, the pins are changed from the high level state to the low level state, and can be used as a trigger signal of a key event, and the signal of the master control unit or the slave control unit can be triggered to be interrupted, so that the master control unit or the slave control unit is informed to execute related control operation.
Certainly, in this embodiment, corresponding pull-up resistors should be disposed in the first key pin 203 disposed in the master control unit and the second key pin 213 disposed in the slave control unit, and the pull-up resistors can keep the first key pin and the second key pin in a high level state under the condition that there is no key event, where the setting of the pull-up resistors belongs to the prior art, and detailed description of the specific setting mode and connection state of the pull-up resistors is not described here.
In this embodiment, the master control unit and the slave control unit jointly respond to the start key 271, when the smart watch is in a shutdown state, the master control unit is powered on first after long pressing of the start key, and the master control unit is powered on and then controls the power management unit to enable the slave control unit to be in a powered on state.
Therefore, in this embodiment, an NMOS transistor 28 is further disposed between the other end of the start circuit 27 and the second key pin 213, a gate of the NMOS transistor is electrically connected to the other end of the start circuit, a drain of the NMOS transistor is electrically connected to the second key pin 213, and a source of the NMOS transistor is grounded. In this embodiment, the NMOS transistor disposed between the start key and the second key pin 52 can effectively isolate the current of the master control unit from flowing to the slave control unit when the smart watch enters the start state, thereby ensuring the input/output stability of the start circuit.
In addition, in this embodiment, the start circuit usually maintains an electrical connection state with only one of the first key pin and the second key pin, so that the master control unit or the slave control unit can independently respond to the trigger signal of the key event, so as to avoid confusion of response of the trigger signal of the key event.
The power supply circuit of the main control unit may be a circuit that is external to the main control unit and supplies power to the main control unit, or may be a power supply circuit located inside the main control unit. When the main control unit is controlled to be powered on, for example, after the start button 271 is pressed, the power supply circuit starts to operate, and supplies power to the main control unit and also supplies power to the or logic gate 22.
Based on the smart watch provided by the above embodiment, other embodiments of the present application further provide a mode switching method for the smart watch. The energy consumption of the intelligent watch is controlled by the division of the watch mode and the power-off state of the main control unit in the low energy consumption mode. Specifically, according to different application scenarios of the smart watch, the smart watch is divided into a shutdown mode, an operation mode and a watch mode. When the intelligent watch is in an operation mode, the intelligent watch can operate various functions of data receiving, processing, displaying and the like, wherein the master control unit is responsible for processing tasks with high energy consumption, such as map displaying, real-time parameter calculating and the like, and the slave control unit is responsible for processing tasks with low energy consumption, such as sensor data and the like; when the intelligent watch is in the watch mode, the slave control unit is responsible for processing sensor data and controlling the display unit to display time and/or date and the like, and the main control unit is in a power-off state in the watch mode, so that part of energy consumption generated by the main control unit of the intelligent watch in the watch mode is saved.
Please refer to fig. 3, which is a flowchart illustrating a mode switching method of a smart watch according to an embodiment of the present application. As can be seen from fig. 3, the method comprises the following steps:
step S100: after the main control unit receives a trigger instruction for switching from a shutdown mode to an operation mode, a power supply circuit of the main control unit supplies power to the enable control unit, outputs a high-level signal to an input end of the enable control unit, and outputs power supply voltage to the slave control unit by the enable power supply management unit.
In this embodiment, the trigger instruction for switching from the shutdown mode to the operation mode may specifically be a trigger signal of a key event generated when a user presses the start key for a long time, and in general, the time duration for pressing the start key for a long time is not less than 3 seconds in order to avoid misoperation. When the smart watch is in a shutdown mode, the master control unit and the slave control unit are both in a power-down state, in order to provide an effective power supply voltage for the slave control unit, after a user presses a start key for a long time, the master control unit needs to enter a power-up state first under the action of a power supply circuit (not shown in fig. 2) of the master control unit, and provides a power supply for the enable control unit, so that the enable control unit is in the power-up state, and when an input end of the enable control unit receives a high-level signal output by the master control unit, an enable signal can be output to the power management unit, so that the power management unit outputs a voltage to the slave control unit, and the slave control unit is in the power-up state.
Step S200: the master control unit controls the slave control unit to output a high-level signal to the input end of the enabling control unit through the first interface after receiving a trigger instruction for switching the operation mode to the watch mode, and closes a power supply circuit of the master control unit after receiving a first confirmation instruction fed back by the slave control unit.
In addition, mode options can be set on the display screen, the mode options can include an operation option, a watch mode and a shutdown option, the mode options are released in the operation mode, and a trigger instruction for switching the operation mode into the watch mode can be sent out by selecting the watch option. Of course, in other embodiments, the trigger instruction for switching from the operating mode to the watch mode may also be implemented by setting the start key, and it should be noted that the pressing time of the start key in this scenario should be set separately from the pressing time of the smart watch when the smart watch is turned on (i.e., the smart watch enters the operating mode from the power-off mode).
In this embodiment, when the smart watch enters the watch mode, in order to avoid power consumption as much as possible, the master control unit needs to be in a power-down state on the premise that normal operation of the slave control unit is not affected. The enabling control unit is provided with two control signal input circuits and two power supply access circuits, when any one of the two power supply access circuits inputs a power supply voltage signal, the enabling control unit can be in a power-on state, and similarly, when any one of the two control signal input circuits inputs a high-level voltage signal, the enabling control unit can output an enabling signal to enable the power supply management unit. Because the power management unit and the slave control unit are both in the power-on state in the running mode, and the master control unit is in the power-off state in the watch mode, that is, the voltage signal output by the master control unit is a low-level signal, in order to ensure the normal power supply of the slave control unit, the slave control unit needs to output a high-level signal to the input end of the enable control unit before the master control unit is powered off, so that the logic or gate circuit output enable signal is maintained, and the voltage is provided for the slave control unit and the slave control unit. At this time, the power-on state of the master control unit will not affect the power-on states of the enable control unit and the slave control unit any more, so that after the master control unit receives the first confirmation instruction sent by the slave control unit, the power supply circuit of the master control unit can be controlled to enter the off state, and the power supply for the master control unit is stopped. In this embodiment, the first acknowledgement command is used to indicate a sending state of the slave control unit to the high level signal, so as to prevent the master control unit from suddenly powering down to affect normal operation of the slave control unit.
And 300, supplying power to the enabling control unit by the power management unit.
After the main control unit is powered off, the power management unit continues to supply power to the enabling control unit so as to prevent the enabling control unit from being out of work due to power failure.
Referring to fig. 4, a flowchart of another mode switching method of a smart watch according to an embodiment of the present application is shown. As can be seen from fig. 4, after step S100, the method further comprises the steps of:
step S110: the main control unit controls the display unit through a second interface;
step S120: the master control unit sends a prohibition instruction to the slave control unit through the first interface, wherein the prohibition instruction is used for prohibiting the slave control unit from responding to a trigger signal input by a starting circuit and forbidding a third interface between the slave control unit and the display unit.
When the intelligent watch is in the running mode, the master control unit and the slave control unit run simultaneously, and in order to avoid disordered instruction response, the display unit can be controlled only by the master control unit in a mode of forbidding the third interface so as to display a task interface related to the master control unit. Meanwhile, the response of the slave control unit to the trigger signal can be limited by disabling the second key pin, and at this time, only the master control unit can respond to the trigger signal through the first key pin. When the intelligent watch is in the running mode, the start key is pressed for a long time to control the opening and closing of the main control unit.
In addition, in other embodiments of the present application, after the master control unit receives a trigger instruction for switching from the operating mode to the watch mode, the master control unit needs to hand over the control authority of the display unit and the corresponding authority of the start circuit to the slave control unit. Specifically, the master control unit may send an enabling instruction to the slave control unit through the first interface, where the enabling instruction is used to allow the slave control unit to respond to a trigger signal input by the start circuit, and enable the third interface between the slave control unit and the display unit, and then turn off the power supply circuit of the master control unit. In watch mode, a short press (about 1 second) of the start button is used to trigger the switching on and off of the display unit from the control unit. When the display unit is started, only current time data such as time, date and the like are displayed, and the energy consumption of the intelligent watch is saved as far as possible while the basic requirements of a user are met.
When the smart watch is powered off in the running mode, the slave control unit needs to be turned off in advance, and the master control unit is turned off, and the specific method comprises the following steps:
step S400: after receiving a trigger instruction for switching from an operating mode to a shutdown mode, the master control unit controls the slave control unit to output a low-level signal to the input end of the enable control unit through the first interface.
Step S500: and the master control unit outputs a low level signal to the input end of the enabling control unit after receiving a second confirmation instruction fed back by the slave control unit.
Step S600: the power supply circuit of the main control unit is turned off.
When the two-way input end of the enable control unit inputs a low level signal, the enable control unit cannot enable the power management unit, so that the slave control unit cannot provide power supply voltage, and the slave control unit is turned off. When the power supply circuit of the main control unit is closed, and the enabling control unit is automatically closed. Of course, before the power supply circuit of the main control unit is turned off, the control signal output end of the main control unit may be controlled to output a low level signal, so that the main control unit is turned off after the enable control unit is turned off in advance.
Of course, the smart watch provided by the application can also enter a shutdown mode in a watch mode, and the power management unit can specifically output a low-level signal from the control unit through starting the key to trigger the control signal input end.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The foregoing is merely a detailed description of the invention, and it should be noted that modifications and adaptations by those skilled in the art may be made without departing from the principles of the invention, and should be considered as within the scope of the invention.
Claims (10)
1. A smart watch, comprising: a master control unit, a slave control unit, an enable control unit and a power management unit, wherein,
the control signal output end of the master control unit and the control signal output end of the slave control unit are both connected with the input end of the enable control unit, so that the enable control unit outputs an enable signal from the output end of the enable control unit when receiving a high level signal input by the master control unit and/or the slave control unit;
the master control unit is electrically connected with the slave control unit through a first interface, so that the master control unit controls the slave control unit to output a high-level signal to the input end of the enabling control unit through the first interface before a power supply circuit of the master control unit is closed;
the output end of the enabling control unit is connected with the enabling end of the power management unit, so that the power management unit outputs power supply voltage from the output end of the power management unit under the enabling of the enabling control unit;
the output end of the power supply management unit is connected with the power supply access end of the slave control unit;
any one of a power supply circuit and a power management unit of the main control unit can supply power to the enabling control unit.
2. The smart watch of claim 1, wherein the enable control unit comprises a logical OR gate circuit, wherein,
the first input end of the logic OR gate circuit is electrically connected with the control signal output end of the master control unit, the second input end of the logic OR gate circuit is electrically connected with the control signal output end of the slave control unit, and the output end of the logic OR gate circuit is electrically connected with the enabling end of the power management unit.
3. The smart watch of claim 1, further comprising a display unit,
the display unit is electrically connected with the main control unit through a third interface;
the display unit is electrically connected with the slave control unit through a second interface.
4. The smart watch of claim 2, wherein the enable control unit further comprises a first diode and a second diode, wherein,
the anode of the first diode is electrically connected with the power supply output end of the main control unit, and the cathode of the first diode is electrically connected with the power supply access end of the logic OR gate circuit;
and the anode of the second diode is electrically connected with the output end of the power management circuit, and the cathode of the second diode is electrically connected with the power supply access end of the logic OR gate circuit.
5. The smartwatch of claim 1, further comprising a start circuit, one end of the start circuit being grounded, the other end of the start circuit being connected to the master control unit via a first key pin and to the slave control unit via a second key pin, the start circuit further comprising a start key for controlling a ground state of the start circuit.
6. The smart watch of claim 5, wherein an NMOS transistor is further disposed between the other end of the start circuit and the second key pin, a gate of the NMOS transistor is electrically connected to the other end of the start circuit, a drain of the NMOS transistor is electrically connected to the second key pin, and a source of the NMOS transistor is grounded.
7. A mode switching method of a smart watch is characterized by comprising the following steps:
after the main control unit receives a trigger instruction for switching from a shutdown mode to an operation mode, a power supply circuit of the main control unit supplies power to the enable control unit and outputs a high-level signal to an input end of the enable control unit, and the enable control unit enables the power management unit to output power supply voltage to the slave control unit;
the method comprises the following steps that after a trigger instruction for switching from an operation mode to a watch mode is received by a master control unit, a slave control unit is controlled by a first interface to output a high-level signal to an input end of an enable control unit, and after a first confirmation instruction fed back by the slave control unit is received by the master control unit, a power supply circuit of the master control unit is closed;
the power management unit supplies power to the enabling control unit.
8. The method of claim 7, wherein after the main control unit receives a trigger instruction for switching from the shutdown mode to the running mode, the method further comprises:
the main control unit controls the display unit through a third interface;
the master control unit sends a prohibition instruction to the slave control unit through the first interface, wherein the prohibition instruction is used for prohibiting the slave control unit from responding to a trigger signal input by a starting circuit and forbidding a second interface between the slave control unit and the display unit.
9. The method of claim 7, wherein the main control unit further comprises, after receiving a trigger command for switching from the operation mode to the watch mode, before turning off a power supply circuit of the main control unit:
the master control unit sends an enabling instruction to the slave control unit through the first interface, wherein the enabling instruction is used for allowing the slave control unit to respond to a trigger signal input by a starting circuit and enabling a second interface between the slave control unit and a display unit.
10. The method of claim 7, further comprising:
after receiving a trigger instruction for switching from an operating mode to a shutdown mode, the master control unit controls the slave control unit to output a low-level signal to the input end of the enabling control unit through a first interface;
the master control unit outputs a low level signal to the input end of the enabling control unit after receiving a second confirmation instruction fed back by the slave control unit; and closing a power supply circuit of the main control unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810836679.6A CN110764398B (en) | 2018-07-26 | 2018-07-26 | Intelligent watch and mode switching method thereof |
| PCT/CN2019/097942 WO2020020356A1 (en) | 2018-07-26 | 2019-07-26 | Smart watch and mode switching method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810836679.6A CN110764398B (en) | 2018-07-26 | 2018-07-26 | Intelligent watch and mode switching method thereof |
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| CN110764398A CN110764398A (en) | 2020-02-07 |
| CN110764398B true CN110764398B (en) | 2021-06-01 |
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| CN112290928A (en) * | 2020-11-09 | 2021-01-29 | 维沃移动通信有限公司 | Key structure, control method and device of key structure and electronic equipment |
| CN113075989B (en) * | 2021-04-01 | 2023-03-17 | 山东英信计算机技术有限公司 | Power supply protection system and method |
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| CN205121190U (en) * | 2015-08-14 | 2016-03-30 | 深圳智能表芯科技有限公司 | Intelligent wrist -watch power module that can stably supply power |
| CN106487055B (en) * | 2015-09-02 | 2019-06-11 | 华为终端有限公司 | Electric power management circuit, intelligent terminal and charging method |
| CN106707735A (en) * | 2015-11-12 | 2017-05-24 | 朗昇科技（苏州）有限公司 | Low-power consumption intelligent Bluetooth watch |
| CN107546814B (en) * | 2017-10-16 | 2024-04-02 | 歌尔科技有限公司 | Charging base and electronic product |
| CN108319360A (en) * | 2018-01-26 | 2018-07-24 | 出门问问信息科技有限公司 | A kind of display device, electronic equipment and control method for screen display |
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Address after: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Patentee after: Qingdao Hisense Mobile Communication Technology Co.,Ltd. Address before: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Patentee before: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY Co.,Ltd. |