CN113296386A - Intelligent watch - Google Patents

Intelligent watch Download PDF

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Publication number
CN113296386A
CN113296386A CN202110730497.2A CN202110730497A CN113296386A CN 113296386 A CN113296386 A CN 113296386A CN 202110730497 A CN202110730497 A CN 202110730497A CN 113296386 A CN113296386 A CN 113296386A
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CN
China
Prior art keywords
electrically connected
chopper circuit
boost chopper
fully
switching device
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Pending
Application number
CN202110730497.2A
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Chinese (zh)
Inventor
王昱
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Nanchang Qinsheng Electronic Technology Co ltd
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Nanchang Qinsheng Electronic Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN202110730497.2A priority Critical patent/CN113296386A/en
Publication of CN113296386A publication Critical patent/CN113296386A/en
Pending legal-status Critical Current

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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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
    • H02N11/002—Generators

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention relates to the technical field of intelligent wearing, and discloses an intelligent watch, which comprises: a watch body including at least one normally open device; the watch chain is used for placing the watch body; the thermoelectric assembly is electrically connected with the at least one normally-open device and comprises a plurality of thermoelectric module units, the thermoelectric module units are arranged on the watch chain and can be closely contacted with the skin when being worn, and two adjacent thermoelectric module units are electrically connected. Thermoelectric module can provide voltage for the normally open equipment that needs last the power supply in this intelligence wrist-watch, reduces the consumption of normally open equipment to system and battery power, can reach the purpose of power saving, increases the duration of a journey time of equipment.

Description

Intelligent watch
Technical Field
The invention relates to the technical field of intelligent wearing, in particular to an intelligent watch.
Background
Recent statistical data shows that the intelligent wearable market is growing explosively in the coming years. The intelligent watch generally needs a reliable and durable power supply for long-term normal work, and a lithium battery is mainly adopted as the power supply at present. However, because the space of the watch is limited, the electric quantity of the miniature lithium battery cannot meet the requirement of lasting power supply, and the lithium battery is inconvenient to disassemble and replace. Meanwhile, most sensors in the watch function as follows: health, light sensation, gyroscope, motion sensor (a + g sensor), etc., are normally open. Therefore, the too short endurance time of the wearable device becomes a development bottleneck limiting the wearable electronic device at present.
Disclosure of Invention
The invention provides an intelligent watch which can achieve the purpose of saving electricity and increase the endurance time of equipment.
In order to achieve the purpose, the invention provides the following technical scheme:
a smart watch, comprising:
a watch body including at least one normally open device;
the watch chain is used for placing the watch body;
the thermoelectric assembly is electrically connected with the at least one normally-open device and comprises a plurality of thermoelectric module units, the thermoelectric module units are arranged on the watch chain and can be closely contacted with the skin when being worn, and two adjacent thermoelectric module units are electrically connected.
In the intelligent watch provided by the embodiment of the invention, a single thermoelectric module unit can sense the temperature potential difference between the skin temperature and the external temperature, and heat energy is converted into electric energy to be output.
Alternatively, two adjacent thermoelectric module units are connected in series by a wire.
Optionally, a heat dissipation layer is coated on the wires.
Optionally, the watch body further includes a boost chopper circuit, an output end of the thermoelectric assembly is electrically connected to an input end of the boost chopper circuit, and the at least one normally-open device is electrically connected to an output end of the boost chopper circuit.
Optionally, the watch body further includes a first capacitor, a first end of the first capacitor is electrically connected to the output end of the thermoelectric module, and a second end of the first capacitor is grounded.
Optionally, the boost chopper circuit includes a filter inductor, a first fully-controlled switching device, a second fully-controlled switching device, and a second capacitor;
the first end of the filter inductor is electrically connected with the input end of the boost chopper circuit, and the second end of the filter inductor is electrically connected with the first end of the first fully-controlled switching device and the first end of the second fully-controlled switching device respectively; the second end of the first fully-controlled switching device is electrically connected with the input end of the boost chopper circuit and the output end of the boost chopper circuit respectively, and the second end of the second fully-controlled switching device is electrically connected with the output end of the boost chopper circuit; the first end of the second capacitor is electrically connected with the output end of the boost chopper circuit, and the second end of the second capacitor is grounded.
Optionally, the first end of the filter inductor is electrically connected to the input end of the boost chopper circuit through an anti-reverse-filling diode, the input end of the anti-reverse-filling diode is electrically connected to the input end of the boost chopper circuit, and the output end of the anti-reverse-filling diode is electrically connected to the first end of the filter inductor.
Optionally, the boost chopper circuit further includes a control unit, the control unit is in signal connection with the control end of the first fully-controlled switching device and the control end of the second fully-controlled switching device, and the control unit is configured to adjust the switching states of the first fully-controlled switching device and the second fully-controlled switching device by using double closed-loop control according to the output voltage of the second capacitor and the inductance current of the filter inductor, so as to adjust the output voltage of the boost chopper circuit.
Optionally, the watch body further includes a battery and a power supply selection unit, the battery and the boost chopper circuit are electrically connected to the at least one normally-open device through the power supply selection unit, and the power supply selection unit is configured to:
when the output voltage of the boost chopper circuit is greater than or equal to a preset voltage value, the boost chopper circuit is controlled to be electrically connected with the at least one normally-open device, and the battery is controlled to be disconnected with the at least one normally-open device after first preset time;
and when the output voltage of the boost chopper circuit is smaller than the preset voltage value, controlling the battery to be electrically connected with the at least one normally-open device, and controlling the boost chopper circuit to be disconnected with the at least one normally-open device after second preset time.
Optionally, the power supply selection unit includes a third fully-controlled switching device and a fourth fully-controlled switching device, a first end of the third fully-controlled switching device is electrically connected to the battery, a second end of the third fully-controlled switching device is electrically connected to the at least one normally-open device, a first end of the fourth fully-controlled switching device is electrically connected to the output end of the boost chopper circuit, and a second end of the fourth fully-controlled switching device is electrically connected to the at least one normally-open device.
Optionally, a low dropout regulator is connected between the power supply selection unit and the at least one normally-open device.
Drawings
Fig. 1 is a schematic circuit structure diagram of a smart watch according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Referring to fig. 1, an embodiment of the present invention provides a smart watch, including:
a watch body comprising at least one normally open device 2;
the watch chain is used for placing the watch body;
thermoelectric module 1, thermoelectric module 1 is connected with at least one normally open equipment 2 electricity, and thermoelectric module 1 includes a plurality of thermoelectric module unit, and a plurality of thermoelectric module unit set up on the watch chain and can closely contact with skin when dressing, and two adjacent thermoelectric module unit electricity are connected.
In the intelligent watch provided by the embodiment of the invention, a single thermoelectric module unit can sense the temperature potential difference between the skin temperature and the external temperature, and heat energy is converted into electric energy to be output, because two adjacent thermoelectric module units are electrically connected, the voltage output by the thermoelectric module 1 is the sum of the outputs of the plurality of thermoelectric module units, and the thermoelectric module 1 is electrically connected with at least one normally-open device 2, the thermoelectric module 1 can provide voltage for the normally-open device 2 which needs to be continuously supplied with power, the consumption of the normally-open device 2 on the electric quantity of a system and a battery is reduced, the purpose of saving power can be achieved, the endurance time of the device is prolonged, the size of the battery is not increased, and the intelligent watch is convenient to carry.
It should be noted that the normally open device 2 is a functional device that needs to be in a normally open state in the use process of the smart watch, for example, the normally open device 2 may be a health detection device, a light sensor, a gyroscope, a motion sensor, a touch sensor, and the like.
Specifically, above-mentioned thermoelectric module unit can include PN type nanometer silicon thermoelectric film, heat conduction copper foil layer and heat dissipation copper foil layer, and wherein, heat conduction copper foil layer can set up in the thermoelectric module unit be used for with the one side of human skin contact, the heat dissipation copper foil layer can set up in the one side that PN type nanometer silicon thermoelectric module unit deviates from heat conduction copper foil layer.
Wherein, a single thermoelectric module unit can convert 1V voltage at a temperature difference of 20 ℃. According to the human body temperature of 35-37 ℃ and the external indoor temperature of 20-30 ℃, the voltage range can be estimated: 0.25V-0.8V, namely, when the temperature of the single thermoelectric module unit in the outside room is 20-30 ℃, the single thermoelectric module unit can output 0.25V-0.8V direct current voltage. The dc voltage output by the thermoelectric module 1 may be determined according to the number of the thermoelectric module units, and the dc voltage output by the thermoelectric module 1 is the sum of the output voltages of all the thermoelectric module units. Specifically, the number of the thermoelectric module units may be determined according to actual requirements, and is not limited herein.
In a specific embodiment, the watch chain may include a plurality of links, and a plurality of thermoelectric module units may be embedded in different links of the watch chain, for example, one thermoelectric module unit may be disposed on each link of the watch chain, so that the thermoelectric module units can be in contact with the skin of the human body when the smart watch is worn.
In one embodiment, two adjacent thermoelectric module units may be connected in series by a wire, for example, two adjacent thermoelectric module units may be connected by an FPC wire.
In a specific embodiment, the conducting wire may be coated with a heat dissipation layer, which can dissipate heat of the conducting wire, and is beneficial to transmission of electric quantity.
In a specific implementation mode, the watch body further comprises a BOOST chopper circuit 3(BOOST), the output end of the thermoelectric assembly 1 is electrically connected with the input end of the BOOST chopper circuit 3, at least one normally-open device 2 is electrically connected with the output end of the BOOST chopper circuit 3, the BOOST chopper circuit 3 can increase the output voltage of the thermoelectric assembly 1 and output stable voltage to the normally-open device 2, so that the normally-open device 2 can supply power through the thermoelectric assembly 1 and maintain a continuous working state. For example, by increasing the voltage at the input terminal of the boost chopper circuit 3 by the number of thermoelectric module units connected in series on the bracelet, the input voltage can output a stable 3.8V voltage through the boost chopper circuit 3.
In the embodiment of the invention, the watch body may further include a first capacitor C1, a first end of the first capacitor C1 is electrically connected to the output end of the thermoelectric module 1, and a second end of the first capacitor C1 is grounded. The first capacitor C1 can filter the voltage output by the thermoelectric module 1, and can store the voltage output by the thermoelectric module 1 for voltage stabilization.
In a specific embodiment, the boost chopper circuit 3 may include a filter inductor L, a first fully-controlled switching device Q1, a second fully-controlled switching device Q2, a second capacitor C2; the first end of the filter inductor L is electrically connected with the input end of the boost chopper circuit 3, and the second end of the filter inductor L is electrically connected with the first end of the first fully-controlled switching device Q1 and the first end of the second fully-controlled switching device Q2 respectively; the second end of the first fully-controlled switching device Q1 is respectively electrically connected with the input end of the boost chopper circuit 3 and the output end of the boost chopper circuit 3, and the second end of the second fully-controlled switching device Q2 is electrically connected with the output end of the boost chopper circuit 3; a first end of the second capacitor C2 is electrically connected to the output end of the boost chopper circuit 3, and a second end of the second capacitor C2 is grounded.
In the boost chopper circuit 3, the filter inductor L and the second capacitor C2 may form a low-pass filter to filter out harmonics of the first fully-controlled switching device Q1 and the second fully-controlled switching device Q2, and the second capacitor C2 may stabilize the voltage and support the "energy storage" function, thereby ensuring stable output to the post-stage circuit. Specifically, when the output voltage V of the second capacitor C2outWhen the voltage is higher than the given voltage, the first full-control switch device Q1 can be controlled to be closed, the second full-control switch device Q2 can be controlled to be opened, and the output voltage V of the second capacitor C2 can be controlledoutPower is supplied to the circuit of the latter stage when the output voltage V of the second capacitor C2outWhen the voltage is lower than the given voltage, the first full-control switch device Q1 can be controlled to be opened, the second full-control switch device Q2 is controlled to be closed, and the output voltage V of the thermoelectric module 1 isoutThe second capacitor C2 is charged through the second full-control switching device Q2, and the subsequent circuit supplies power, so that the boost chopper circuit 3 is guaranteed to output stable voltage. Specifically, the given voltage may be 3.8V, or may be other preset values, and is selected according to actual requirements, which is not limited herein.
In a specific embodiment, the first end of the filter inductor L and the input end of the boost chopper circuit 3 may be electrically connected through an anti-reverse-flow diode D1, the input end of the anti-reverse-flow diode D1 is electrically connected with the input end of the boost chopper circuit 3, and the output end of the anti-reverse-flow diode D1 is electrically connected with the first end of the filter inductor L. The anti-reverse-filling diode D1 can prevent the reverse output of the power supply inside the watch body from discharging to the thermoelectric assembly 1 on the watch chain when the energy conversion efficiency of the thermoelectric assembly 1 is not high. The case where the energy conversion rate of the thermoelectric module 1 is not high may be when the temperature difference between the human skin and the outside is small, or when the thermoelectric module 1 is not in contact with the skin.
The smart watch provided by the above embodiment of the present invention may further include a control unit 4, where the control unit 4 may be in signal connection with the control terminal of the first fully-controlled switching device Q1 and the control terminal of the second fully-controlled switching device Q2, respectively, and the control unit 4 is configured to output the output voltage V according to the second capacitor C2outAnd the inductor current I on the filter inductor LoutThe switching states of the first fully-controlled switching device Q1 and the second fully-controlled switching device Q2 are adjusted by double closed-loop control to adjust the output voltage of the boost chopper circuit 3.
Specifically, as shown in fig. 1, the specific control flow of the control unit 4 may be: when the output voltage V of the second capacitor C2 is collectedoutWith a given voltage VREFMaking a difference, generating a given current I of a current loop through a controller aREFGiven a current IREFWith the inductor current I collected over the filter inductor LoutAnd performing difference, generating PWM through the controller b to control the on and off states of the first fully-controlled switching device Q1 and the second fully-controlled switching device Q2, and enabling the boost chopper circuit 3 to output stable voltage by controlling the on and off states of the first fully-controlled switching device Q1 and the second fully-controlled switching device Q2. For example, when the given voltage is 3.8V, the output voltage V of the second capacitor C2outWhen the voltage is higher than 3.8V, the control unit 4 controls the control end of the first full-control switching device Q1 to be switched on and the control end of the second full-control switching device Q2 to be switched off, and the voltage on the second capacitor C2 supplies power to the rear-stage normally-open equipment 2; when the output voltage V of the second capacitor C2outWhen the voltage is lower than 3.8V, the control unit 4 controls the control end of the first fully-controlled switching device Q1 to be switched off, the control end of the second fully-controlled switching device Q2 to be switched on, the voltage output by the thermoelectric module 1 charges the second capacitor C2 through the second fully-controlled switching device Q2, and the rear normally-open device 2 supplies power.
The outer loop in the double closed-loop control adopts output voltage as a control target, and the inner loop adopts inductive current as overcurrent protection to protect the first fully-controlled switching device Q1 and the second fully-controlled switching device Q2, so that the boost chopper circuit 3 has stable voltage output. Alternatively, the controller a and the controller b may both adopt PI controllers, and the controller a and the controller b may also adopt other controllers, which may be determined according to the actual situation, and are not limited herein.
In a particular embodiment, the watch body further comprises a battery 5 and a power supply selection unit 6, the battery 5 and the boost chopper circuit 3 being electrically connected to the at least one normally open device 2 through the power supply selection unit 6, the power supply selection unit 6 being configured to: when the output voltage of the boost chopper circuit 3 is greater than or equal to a preset voltage value, controlling the boost chopper circuit 3 to be electrically connected with at least one normally-open device 2, and controlling the battery 5 to be disconnected with the at least one normally-open device 2 after first preset time; and when the output voltage of the boost chopper circuit 3 is smaller than the preset voltage value, the battery 5 is controlled to be electrically connected with the at least one normally-open device 2, and the boost chopper circuit 3 is controlled to be disconnected with the at least one normally-open device 2 after the second preset time. Can realize this internal power of wrist-watch and thermoelectric module 1 through power supply selection unit 6 and select to switch the power supply, when the output voltage of chopper circuit 3 is less than predetermineeing the voltage value, then the power supply selection power can control chopper circuit 3 that steps up and not supply power, supplies power for normally opening equipment 2 through battery 5, can realize the work that normally opening equipment 2 lasts, guarantees the operation of the normal function of wrist-watch body.
In a specific embodiment, the power supply selection unit 6 may include a third fully-controlled switching device Q3 and a fourth fully-controlled switching device Q4, a first terminal of the third fully-controlled switching device Q3 is electrically connected to the battery 5, a second terminal of the third fully-controlled switching device Q3 is electrically connected to the at least one normally-open device 2, a first terminal of the fourth fully-controlled switching device Q4 is electrically connected to the output terminal of the boost chopper circuit, and a second terminal of the fourth fully-controlled switching device Q4 is electrically connected to the at least one normally-open device 2.
When the voltage (the output voltage of the boost chopper circuit 3) supplied by the thermoelectric module 1 is smaller than a preset voltage value, the power supply selection unit 6 may specifically work by controlling the third fully-controlled switching device Q3 to be turned on, enabling the battery 5 to supply power to the normally-open device 2, turning off the fourth fully-controlled switching device Q4 after delaying a first preset time, and cutting off the power supply of the thermoelectric module 1, so as to ensure that the normally-open device 2 continuously works and maintain the normal function of the watch; when the voltage supplied by the thermoelectric component 1 (the output voltage of the boost chopper circuit 3) is greater than or equal to the preset voltage value, the fourth fully-controlled switching device Q4 can be controlled to be switched on, the thermoelectric component 1 supplies power to the normally-open device 2, the third fully-controlled switching device Q3 is switched off after the second preset time is delayed, the power supply of the battery 5 is cut off, the power consumption of the battery 5 can be reduced, and the endurance time of the battery 5 is prolonged. The power supply selection unit 6 delays the first preset time to turn off the fourth full-control switching device Q4 or delays the second preset time to turn off the third full-control switching device Q3, so that switching power failure can be prevented, and normal work of the normally-open equipment 2 is guaranteed. The preset voltage value may be set to 3V, or may be set to other values, which may be selected according to actual situations, and is not limited herein. The first preset time and the second preset time may be set to 3s, or may be set to other values, and are selected according to practical situations, and are not limited herein.
In a specific embodiment, the first fully-controlled switching device Q1, the second fully-controlled switching device Q2, the third fully-controlled switching device Q3, and the third fully-controlled switching device Q3 may be MOS transistors, or may be other fully-controlled switching devices, which is not limited herein and may be selected according to actual situations.
In a specific embodiment, a low dropout linear regulator (LDO)7 may be connected between the power selection unit 6 and the at least one normally-open device 2. The low dropout regulator 7 is capable of converting the output voltage of the battery 5 or the boost chopper circuit 3 into an input voltage required by the normally-open device 2. For example, the output voltage of the battery 5 or the boost chopper circuit 3 is 3.8V, and the input voltage required by the normally-open device 2 is 1.8V, and the low dropout linear regulator can convert the 3.8V output by the battery 5 or the boost chopper circuit 3 into the 1.8V input voltage required by the normally-open device 2.
Through comparison of test data, the watch with the battery capacity of 500mAh has the working current of 20mA (a scene of overlapping calling and playing music) in a heavy-load scene, the standby current is about 2mA (normally open equipment is in a normally open state and the lowest power consumption of a system), the watch can continue to operate for 10 days only by supplying power through the battery if the watch is in the standby state and the non-power-off state; the intelligent watch provided by the embodiment of the invention can adopt the thermoelectric assembly to supply power to normally open equipment, can share the working current of about 15mA and the standby current of 1mA, and can continue to operate for about 20 days if the watch is in a standby state and is not turned off. The comparison of the test data proves that the intelligent watch provided by the embodiment of the invention can greatly save the energy consumption of the battery, prolong the endurance time and achieve the purpose of saving electricity; the battery occupation volume can be reduced under the condition that the cruising ability of the watch is improved, so that the watch is smaller and convenient to carry; in addition, the intelligent watch provided by the embodiment of the invention has no mechanical moving part, so that the electric quantity can be saved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (11)

1. A smart watch, comprising:
a watch body including at least one normally open device;
the watch chain is used for placing the watch body;
the thermoelectric assembly is electrically connected with the at least one normally-open device and comprises a plurality of thermoelectric module units, the thermoelectric module units are arranged on the watch chain and can be closely contacted with the skin when being worn, and two adjacent thermoelectric module units are electrically connected.
2. The smart watch of claim 1, wherein two adjacent thermoelectric module units are connected in series by a wire.
3. The smartwatch of claim 2, wherein the wire is coated with a heat sink layer.
4. The smart watch of claim 1, wherein the watch body further comprises a boost chopper circuit, wherein the output of the thermoelectric assembly is electrically connected to the input of the boost chopper circuit, and wherein the at least one normally-open device is electrically connected to the output of the boost chopper circuit.
5. The smart watch of claim 4, wherein the watch body further comprises a first capacitor, a first end of the first capacitor being electrically connected to the output of the thermoelectric assembly, a second end of the first capacitor being connected to ground.
6. The smart watch of claim 5, wherein the boost chopper circuit comprises a filter inductor, a first fully controlled switching device, a second capacitor;
the first end of the filter inductor is electrically connected with the input end of the boost chopper circuit, and the second end of the filter inductor is electrically connected with the first end of the first fully-controlled switching device and the first end of the second fully-controlled switching device respectively; the second end of the first fully-controlled switching device is electrically connected with the input end of the boost chopper circuit and the output end of the boost chopper circuit respectively, and the second end of the second fully-controlled switching device is electrically connected with the output end of the boost chopper circuit; the first end of the second capacitor is electrically connected with the output end of the boost chopper circuit, and the second end of the second capacitor is grounded.
7. The smart watch of claim 6, wherein the first end of the filter inductor is electrically connected to the input end of the boost chopper circuit through an anti-back-filling diode, the input end of the anti-back-filling diode is electrically connected to the input end of the boost chopper circuit, and the output end of the anti-back-filling diode is electrically connected to the first end of the filter inductor.
8. The smart watch of claim 6, further comprising a control unit, wherein the control unit is in signal connection with the control terminal of the first fully-controlled switching device and the control terminal of the second fully-controlled switching device, respectively, and the control unit is configured to adjust the switching states of the first fully-controlled switching device and the second fully-controlled switching device by using double closed-loop control according to the output voltage of the second capacitor and the inductor current of the filter inductor, so as to adjust the output voltage of the boost chopper circuit.
9. The smart watch of claim 4, wherein the watch body further comprises a battery and a power supply selection unit, the battery and the boost chopper circuit being electrically connected to the at least one normally-open device through the power supply selection unit, the power supply selection unit being configured to:
when the output voltage of the boost chopper circuit is greater than or equal to a preset voltage value, the boost chopper circuit is controlled to be electrically connected with the at least one normally-open device, and the battery is controlled to be disconnected with the at least one normally-open device after first preset time;
and when the output voltage of the boost chopper circuit is smaller than the preset voltage value, controlling the battery to be electrically connected with the at least one normally-open device, and controlling the boost chopper circuit to be disconnected with the at least one normally-open device after second preset time.
10. The smart watch of claim 9, wherein the power selection unit comprises a third fully controlled switching device and a fourth fully controlled switching device, a first terminal of the third fully controlled switching device is electrically connected to the battery, a second terminal of the third fully controlled switching device is electrically connected to the at least one normally-open device, a first terminal of the fourth fully controlled switching device is electrically connected to the output terminal of the boost chopper circuit, and a second terminal of the fourth fully controlled switching device is electrically connected to the at least one normally-open device.
11. The smartwatch according to claim 9 or 10, wherein a low dropout regulator is connected between the power supply selection unit and the at least one normally-open device.
CN202110730497.2A 2021-06-30 2021-06-30 Intelligent watch Pending CN113296386A (en)

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Application Number Priority Date Filing Date Title
CN202110730497.2A CN113296386A (en) 2021-06-30 2021-06-30 Intelligent watch

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Application Number Priority Date Filing Date Title
CN202110730497.2A CN113296386A (en) 2021-06-30 2021-06-30 Intelligent watch

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CN113296386A true CN113296386A (en) 2021-08-24

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Application Number Title Priority Date Filing Date
CN202110730497.2A Pending CN113296386A (en) 2021-06-30 2021-06-30 Intelligent watch

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CN (1) CN113296386A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115343504A (en) * 2022-07-26 2022-11-15 济南轨道交通集团有限公司 Sensor detection system based on wearable thermoelectric collector of foamy copper heat dissipation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115343504A (en) * 2022-07-26 2022-11-15 济南轨道交通集团有限公司 Sensor detection system based on wearable thermoelectric collector of foamy copper heat dissipation

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