CN209315058U - Intelligent bracelet with shell temperature detection function - Google Patents
Intelligent bracelet with shell temperature detection function Download PDFInfo
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- CN209315058U CN209315058U CN201821308226.8U CN201821308226U CN209315058U CN 209315058 U CN209315058 U CN 209315058U CN 201821308226 U CN201821308226 U CN 201821308226U CN 209315058 U CN209315058 U CN 209315058U
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- intelligent bracelet
- charging
- charging needle
- controller
- temperature detection
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Abstract
The utility model discloses a kind of Intelligent bracelets with shell temperature detection function, including charging needle, charging chip, controller and temperature sensor；The charging needle includes anode and cathode, and when Intelligent bracelet is worn on human body, positive charging needle is in contact with human skin；Analog switch is set in Intelligent bracelet, connects the positive charging needle；When charging needle is connected to external charging power supply, the positive charging needle is connected to controller by control analog switch with charging chip；When Intelligent bracelet opens temperature detecting function, the positive charging needle is connected to by control analog switch with temperature sensor, and using charging needle as thermal conductive metal plate, human heat is conducted to temperature sensor, realizes shell temperature detection.The utility model, without additionally adding metalwork in Intelligent bracelet to realize temperature detecting function, thus solves the prior art because the problems such as cost increases, assembling product is difficult caused by increasing metalwork by being multiplexed to charging needle.
Description
Technical field
The utility model belongs to wearable device technical field, is related to Intelligent bracelet, specifically, being to be related to a kind of application
Shell temperature detection technique in Intelligent bracelet.
Background technique
Wearable device is that one kind can be directly worn on the person or be integrated into the clothes or accessory of human body just
Take formula electronic product.Wearable device is not only a kind of hardware device, can more pass through software support and data interaction, cloud
Interaction is held to realize powerful function, wearable device brings huge transformation to people's lives, perception.
Current wearable device is mostly based on Intelligent bracelet.Existing Intelligent bracelet is in addition to timing, step counting, heart rate
Outside the functions such as detection, also Intelligent bracelet is set to have the function of monitoring body surface temperature by adding temperature sensor sometimes.
Currently, the sensor for monitoring shell temperature have it is contactless and two kinds of contact.Non-contact temperature sensor is mainly
Mode based on infrared detection measures, and accurate measurement result in order to obtain, to the layout and installation of temperature sensor
Design is proposed very high requirement.It is increasingly complex in structure design accordingly, with respect to contact type temperature sensor.Contact
Formula temperature sensor is mainly measured by the way of heat transfer, by adding thermal conductive metal plate in Intelligent bracelet, is utilized
Thermal conductive metal plate contact human skin is then realized by the body surface heat transfer of human body to the temperature sensor in Intelligent bracelet
Measurement to body surface temperature.
For the Intelligent bracelet using contact type temperature sensor design, typically using on the shell side of bracelet ontology
The frame of one circle metal material of edge installation specially adds metalwork in Intelligent bracelet, real in this, as thermal conductive metal plate
Now to the detection of body surface temperature.But this traditional structure design, higher cost, and while assembling can exist it is certain
Difficulty.
Summary of the invention
The utility model proposes a kind of intelligent hand with shell temperature detection function based on contact type temperature sensor
Ring is also used as thermal conductive metal plate, without in Intelligent bracelet by being multiplexed to the charging needle in Intelligent bracelet
It is additional to increase metalwork, the detection function of body surface temperature can be realized in Intelligent bracelet, solved because increasing metalwork
And lead to the problem of assembling product difficulty.
In order to solve the above technical problems, the utility model is achieved using following technical scheme:
A kind of Intelligent bracelet with shell temperature detection function, including charging needle, charging chip, controller and temperature pass
Sensor；The charging needle includes anode and cathode, when Intelligent bracelet is worn on human body, positive charging needle and human skin phase
Contact；It is provided with analog switch in the Intelligent bracelet, connects the positive charging needle；The controller is connected in charging needle
When external charging power supply, the positive charging needle is connected to by control analog switch with charging chip；Body temperature is opened in Intelligent bracelet
When detection function, controls the analog switch and be connected to the positive charging needle with temperature sensor.
In order to detect whether charging needle is connected to external charging power supply, the utility model preferably two kinds of design schemes:
First, being provided with voltage sampling circuit in the Intelligent bracelet, acquires the charging chip and analog switch connects
Voltage on link, and it is transmitted to the controller；The controller is sentenced when detecting that the voltage reaches given threshold
The fixed charging needle is connected to external charging power supply.
Second, being additionally provided with the detection circuit for detecting charger insert state in the Intelligent bracelet, intelligence is connected
Detection pin in the charging interface of energy bracelet, and generate detection signal and be sent to the controller.The controller is receiving
To detection circuit output when indicating the detection signal that charger is inserted into, determine that the charging needle and external charging power supply connect
It is logical.
In order to reduce system power dissipation, the utility model configures the controller after temperature detecting function unlatching, and output makes
Can signal to the temperature sensor, control the enabled operation of the temperature sensor, acquisition by positive charging needle be conducted through come
Body surface temperature, guarantee output result validity.
In order to save the interface resource of controller, the analog switch preferably uses multichannel analog switching switch, including
Common end, control terminal and multi channel selecting end；The common end connection of the analog switch positive charging needle, the first gated end connect
The charging chip is connect, the second gated end connects the temperature sensor, and control terminal connects the controller, defeated according to controller
Control signal out, controls the common end and selects one between first gated end and the second gated end and be connected to.
In order to improve the stability of the control signal exported by controller, preferably the common end of the analog switch is led to
Cross pull down resistor ground connection.
Preferably, the analog switch preferably uses single-pole double-throw switch (SPDT).
In order to guarantee positive charging needle Intelligent bracelet wearing after can be in close contact with human skin, preferably by it is described just
Pole charging needle is laid in the back side of the shell of Intelligent bracelet, opens user at any time during normally wearing Intelligent bracelet
Temperature detecting function is easy to use.
Compared with prior art, the advantages and positive effects of the utility model are as follows: the utility model passes through to Intelligent bracelet
Upper existing charging needle carries out multiplexing functions, and analog switch is cooperated to carry out the route connected state of charging needle on circuit boards
Switching, so that charging needle can be connected to charging chip during Intelligent bracelet is in charging, normal transmission charging current, and
After Intelligent bracelet starts temperature detecting function, it is also used as thermal conductive metal plate, by the body surface heat transfer of human body to temperature sensing
Device realizes effective detection to body surface temperature.Using the charging needle multiplexing technology of the utility model, without being to realize body temperature
Detection function and metalwork is additionally added in Intelligent bracelet, thus solve the prior art because increase metalwork caused by
The problems such as this raising, difficult assembling product.
After the detailed description of the utility model embodiment is read in conjunction with the figure, other features and advantages of the utility model
It will become clearer.
Detailed description of the invention
Fig. 1 is the first embodiment for the Intelligent bracelet with shell temperature detection function that the utility model is proposed
Circuit diagram；
Fig. 2 is second of embodiment of the Intelligent bracelet with shell temperature detection function that the utility model is proposed
Circuit diagram；
Fig. 3 is the third embodiment for the Intelligent bracelet with shell temperature detection function that the utility model is proposed
Circuit diagram.
Specific embodiment
Specific embodiment of the present utility model is described in more detail with reference to the accompanying drawing.
The present embodiment in Intelligent bracelet in order to realize temperature detecting function, first on the internal circuit board of Intelligent bracelet
Temperature sensor is laid, as shown in Figure 1-Figure 3, which is contact type temperature sensor, is needed by heat-conducting metal
Piece conducts the body surface heat of human body, and the shell temperature of human body is then calculated according to body surface calorimeter.In order to avoid in Intelligent bracelet
Shell on add the problems such as assembling product caused by heat-conducting metal pieces is difficult, the present embodiment is proposed to filling in Intelligent bracelet
Acusector PIN(charging electrode) it is multiplexed, charging needle PIN is also used as thermal conductive metal plate, executes temperature check in Intelligent bracelet
When function, it is bonded the skin of human body, and then the body surface heat of human body is conducted to temperature sensor, realized to body surface temperature
Measurement.
The charging needle PIN being laid on the shell of Intelligent bracelet includes anode and two contacts of cathode, and the present embodiment is preferred
Positive charging needle PIN+ is multiplexed, thermal conductive metal plate is also used as, when executing temperature detecting function, with Intelligent bracelet
Internal temperature sensor is connected, to acquire shell temperature.
It is for external charger that charging needle PIN is laid on the shell of Intelligent bracelet, and the electric energy that charger is provided passes
The charging chip on circuit board is transported to, charge control is carried out to the battery inside Intelligent bracelet using charging chip, to supplement electricity
Amount.In order to not influence the charge function of Intelligent bracelet, when Intelligent bracelet needs to charge, need to restore positive charging needle PIN+ with
Connected state between charging chip, for this purpose, the present embodiment on the internal circuit board of Intelligent bracelet further open by setting simulation
It closes, selects to be connected between charging chip and temperature sensor to control anode charging needle PIN+.
The analog switch can select diversified forms, such as two single-pole single-throw switch (SPST)s K1, K2 or a multichannel
Analog switch K etc..When using two single-pole single-throw switch (SPST)s, as shown in Fig. 2, can be by one of single-pole single-throw switch (SPST)
K1 is connected between positive charging needle PIN+ and charging chip, another single-pole single-throw switch (SPST) K2 is connected to positive charging needle
Between PIN+ and temperature sensor, using the controller MCU inside Intelligent bracelet to the on-off of two single-pole single-throw switch (SPST)s K1, K2
State is controlled, and when executing charge function, control single-pole single-throw switch (SPST) K1 conducting, single-pole single-throw switch (SPST) K2 is disconnected, will just
Pole charging needle PIN+ is connected to charging chip, transmits electric energy；When executing temperature detecting function, control single-pole single-throw switch (SPST) K2 is led
Logical, single-pole single-throw switch (SPST) K1 is disconnected, and positive charging needle PIN+ is connected to temperature sensor, conducts heat.Using this circuit
Design, needs to occupy GPIO mouthfuls of two-way of controller MCU, easily causes the interface resource of controller MCU nervous.If only taking up control
GPIO all the way mouthfuls of device MCU then needs to add negater circuit on circuit boards, generates the opposite two path control signal of current potential, point
Supplementary biography transports to two single-pole single-throw switch (SPST)s K1, K2, to realize the switching control to the on off operating mode of two single-pole single-throw switch (SPST)s K1, K2
System.This circuit design will cause the complication of circuit structure, not utilize control product cost.Based on this, the present embodiment is preferred
Using multichannel analog switching switch K as the analog switch, the case where only taking up GPIO all the way mouthfuls of controller MCU
Under, realize the switching control to positive charging needle PIN+ communication line.
In the present embodiment, the multichannel analog switching switch K can specifically select a single-pole double-throw switch (SPDT) to carry out
Circuit design, as shown in Figure 1.The common end A of single-pole double-throw switch (SPDT) K is connected to positive charging needle PIN+, the first gated end B connects
Charging chip, the second gated end C connection temperature sensor are connect, the GPIO1 mouth of control terminal D connection controller MCU receives controller
The control signal of MCU output.In order to make to control the waveform stabilization of signal, the reliability that raising controls single-pole double-throw switch (SPDT) K is excellent
The control terminal D of single-pole double-throw switch (SPDT) K is grounded GND by pull down resistor R3 by choosing.When the control signal of controller MCU output is low
When level, the current potential of the control terminal D of single-pole double-throw switch (SPDT) K can be pulled down to by pull down resistor R3 by ground, control single-pole double throw
The common end A of switch K is connected to the first gated end B, it is established that charge circuit.And when the control signal of controller MCU output is
When high level, stable high potential can be set up in the control terminal D of single-pole double-throw switch (SPDT) K by pull down resistor R3, with control
The common end A of single-pole double-throw switch (SPDT) K is connected to the second gated end C, it is established that temperature check circuit.
The present embodiment preferred disposition controller MCU only during non-charging and user by operate Intelligent bracelet start body
When temperature detector brake, by its GPIO1 mouthfuls of output high-level control signal, remaining moment sets GPIO1 mouthfuls as low potential.Using
This design method, it is ensured that the positive charging needle PIN+ and cathode charging needle PIN- of Intelligent bracelet are connecting upper external charging
When power supply, such as when grafting charger or main equipment, external charge power supply can immediately access charging chip, in time
Respond charging operations.Systematically GND on cathode charging needle PIN- connection circuit board.
In order to when there is external charging plant-grid connection, keep the charged state of Intelligent bracelet, the present embodiment design voltage is adopted
Sample is electrically connected in the connection line between analog switch and charging chip, such as is connected to the first of single-pole double-throw switch (SPDT) K
In connection line between gated end B and charging chip, to acquire the voltage value in route.As the voltage sampling circuit
A kind of preferred circuit design, can connect to form bleeder circuit, one end is connected to single-pole double throw using two divider resistances R1, R2
In connection line between the first gated end B and charging chip of switch K, the other end is grounded GND, and divider node connects controller
In addition GPIO mouthfuls all the way of MCU, such as GPIO2 mouthfuls, to realize that the state for whether being connected to external charging power supply to charging needle PIN is examined
It surveys.
Specifically, when charging needle PIN is connected to external charge power supply, between the first gated end B and charging chip
Connection line on current potential be height, through divider resistance R1, R2 partial pressure after, set controller MCU GPIO2 mouth be high potential, conjunction
The resistance value of the configuration of reason ground divider resistance R1, R2, may be implemented the GPIO2 that controller MCU is transmitted to when there is charge power supply access
The partial pressure of mouth reaches or is higher than given threshold.Controller MCU reaches or is higher than setting in the current potential for detecting its GPIO2 mouthfuls
When threshold value, during being determined as charging, its GPIO1 mouthfuls of low level state is kept, the common end A of single-pole double-throw switch (SPDT) K is maintained to begin
It is connected to eventually with the first gated end B, guarantees that charging process persistently carries out.
During charging, if user's operation Intelligent bracelet starts temperature detecting function, due to positive charging needle PIN at this time
+ occupied, therefore temperature detecting function cannot execute.In order to avoid maloperation, the present embodiment Configuration Control Unit MCU is in intelligence
During bracelet charges, if receiving the instruction for opening temperature detecting function, controls analog switch K and maintain positive charging needle PIN+
With the connected state of charging chip, it is not responding to user's operation, and " product further can be shown by the display screen of Intelligent bracelet
Charging, temperature detecting function wouldn't can be used " prompt information, to eliminate the doubt of user.Alternatively, can be with Configuration Control Unit
MCU directly shields temperature detecting function, that is, the option for setting the function is not optional, to guarantee to charge during Intelligent bracelet charges
Process.
When controller MCU detects that its GPIO2 mouthfuls of current potential is low, charging needle PIN and external charge power supply are indicated
It disconnects, during being determined as non-charging.During non-charging, if the operation that controller MCU receives starting temperature detecting function refers to
It enables, then by its GPIO1 mouthfuls of output high level, the common end A of control single-pole double-throw switch (SPDT) K is connected to the second gated end C, will just
Pole charging needle PIN+ is connected to temperature sensor.At this point, skin of the anode charging needle PIN+ as thermal conductive metal plate, with wearer
It is in contact, the body surface heat of human body is conducted to temperature sensor, realizes the measurement to body surface temperature.
During detecting body surface temperature, since positive charging needle PIN+ is in contact with the skin of human body,
Charging needle can not be connected with external charger or main equipment again, ensure that Intelligent bracelet is executing body temperature in this way
During detection function, charging needle PIN+, PIN- will not external charge power supply, thus can ensure the charging process of Intelligent bracelet
It will not be clashed with temperature check process.
Certainly, the access of external charging power supply is detected, other circuit forms can also be used.For example, can be in intelligence
The detection circuit for being exclusively used in detection charger insert state can be laid on the internal circuit board of bracelet, connect filling in Intelligent bracelet
The detection pin ID of electrical interface, as shown in Figure 3.When the charging interface external charger or main equipment in Intelligent bracelet, inspection
Slowdown monitoring circuit can detect the potential change of ID pin, and then generate the detection signal for indicating that charger is inserted into and be sent to controller
MCU, such as it is sent to the GPIO2 mouth of controller MCU, there is external charging plant-grid connection with notification controller MCU.At this point, control
Device MCU is controlled simulation and is opened by the control terminal D of its GPIO1 mouthfuls of output control signal (high level or low level) to analog switch K
It closes K to be connected to its common end A with the first gated end B, control system enters charging process.During charging, temperature check is shielded
Function only detects that external charging power supply disconnects in detection circuit, and when user opens temperature detecting function, controller MCU
Output control signal (low level or high level), the gating circuit of switching analoging switch K switch to its common end A and second
Gated end C connection, then using positive charging needle PIN+ as conductive metal sheet, to the body surface heat of temperature sensor conduction human body
Amount completes temperature detecting function.
Certainly, the control signal for passing through its GPIO1 mouthfuls of output for controller MCU, also can be configured to: when GPIO1 mouthfuls
When persistently exporting high level, the common end A of control analog switch K is connected to the first gated end B, that is, enters charging process；When
GPIO1 mouthfuls persistently export 300ms low and high level alternation pulse signal when, control analog switch K common end A with second select
Go side C connection, that is, enter temperature check process；And when Intelligent bracelet neither charges nor detects shell temperature, GPIO1 mouthfuls
Persistently export low level.The level state for controlling signal can require determination, the present embodiment according to the specific control of analog switch K
It is not limited in the above citing.
It, can be by temperature sensing in order to reduce system power dissipation for the temperature sensor configured with enabled pin EN
The enabled pin EN of device is connected to controller MCU.Configuration Control Unit MCU only after temperature detecting function unlatching, exports enabled letter
Number, thus the enabled operation of control temperature sensor also may further ensure that the correct enabling of temperature detecting function.
In order to improve the accuracy of temperature check, charging needle PIN(at least anode charging needle PIN+) is preferably laid in intelligence
The back side of the shell of energy bracelet, in user's wearing after Intelligent bracelet, it can be ensured that the skin of positive charging needle PIN+ and human body
It is in close contact, then effectively conductor exterior heat amount.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model,
It should also belong to the protection scope of the utility model.
Claims (9)
1. a kind of Intelligent bracelet with shell temperature detection function, including charging needle, charging chip, controller and temperature sensing
Device；The charging needle includes anode and cathode, and when Intelligent bracelet is worn on human body, positive charging needle connects with human skin
Touching；It is characterized in that, being provided with analog switch in the Intelligent bracelet, the positive charging needle is connected；The controller exists
When charging needle is connected to external charging power supply, the positive charging needle is connected to by control analog switch with charging chip；In intelligent hand
When ring opens temperature detecting function, controls the analog switch and be connected to the positive charging needle with temperature sensor.
2. the Intelligent bracelet according to claim 1 with shell temperature detection function, which is characterized in that further include voltage
Sample circuit acquires the voltage in the charging chip and analog switch connection line, and is transmitted to the controller.
3. the Intelligent bracelet according to claim 2 with shell temperature detection function, which is characterized in that in the voltage
Divider resistance is connected to the charging chip and analog switch after two divider resistances series connection comprising there are two in sample circuit
Connection line and ground between, the divider node of two divider resistances connects the controller.
4. the Intelligent bracelet according to claim 1 with shell temperature detection function, which is characterized in that further include being used for
The detection circuit for detecting charger insert state, connects the detection pin in the charging interface of Intelligent bracelet, and generates detection letter
Number it is sent to the controller.
5. the Intelligent bracelet according to claim 1 with shell temperature detection function, which is characterized in that the controller
After temperature detecting function unlatching, the temperature sensor is outputed enable signal to, controls the enabled operation of the temperature sensor.
6. the Intelligent bracelet according to any one of claim 1 to 5 with shell temperature detection function, feature exist
In the analog switch is multichannel analog switching switch, including common end, control terminal and multi channel selecting end；The simulation is opened
The common end connection of the pass positive charging needle, the first gated end connect the charging chip, and the second gated end connects the temperature
Sensor is spent, control terminal connects the controller, according to the control signal that controller exports, controls the common end described the
One is selected between one gated end and the second gated end to be connected to.
7. the Intelligent bracelet according to claim 6 with shell temperature detection function, which is characterized in that the simulation is opened
The common end of pass is grounded by pull down resistor.
8. the Intelligent bracelet according to claim 6 with shell temperature detection function, which is characterized in that the simulation is opened
Closing is single-pole double-throw switch (SPDT).
9. the Intelligent bracelet according to any one of claim 1 to 5 with shell temperature detection function, feature exist
In the anode charging needle is laid in the back side of the shell of Intelligent bracelet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821308226.8U CN209315058U (en) | 2018-08-14 | 2018-08-14 | Intelligent bracelet with shell temperature detection function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821308226.8U CN209315058U (en) | 2018-08-14 | 2018-08-14 | Intelligent bracelet with shell temperature detection function |
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| Publication Number | Publication Date |
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| CN209315058U true CN209315058U (en) | 2019-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821308226.8U Active CN209315058U (en) | 2018-08-14 | 2018-08-14 | Intelligent bracelet with shell temperature detection function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108936986A (en) * | 2018-08-14 | 2018-12-07 | 歌尔科技有限公司 | Intelligent bracelet with shell temperature detection function |
| CN111181204A (en) * | 2018-11-09 | 2020-05-19 | 凹凸电子（武汉）有限公司 | Battery protection system, battery protection method and battery pack |
| CN112494047A (en) * | 2020-11-23 | 2021-03-16 | 歌尔科技有限公司 | Multifunctional multiplexing circuit and intelligent wearable device |
-
2018
- 2018-08-14 CN CN201821308226.8U patent/CN209315058U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108936986A (en) * | 2018-08-14 | 2018-12-07 | 歌尔科技有限公司 | Intelligent bracelet with shell temperature detection function |
| CN108936986B (en) * | 2018-08-14 | 2024-04-05 | 歌尔科技有限公司 | Intelligent bracelet with body surface temperature detection function |
| CN111181204A (en) * | 2018-11-09 | 2020-05-19 | 凹凸电子（武汉）有限公司 | Battery protection system, battery protection method and battery pack |
| CN112494047A (en) * | 2020-11-23 | 2021-03-16 | 歌尔科技有限公司 | Multifunctional multiplexing circuit and intelligent wearable device |
| CN112494047B (en) * | 2020-11-23 | 2022-12-02 | 歌尔科技有限公司 | Multifunctional multiplexing circuit and intelligent wearable device |
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