CN108832953A - A kind of wisdom bracelet monitoring limb activity information - Google Patents
A kind of wisdom bracelet monitoring limb activity information Download PDFInfo
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- CN108832953A CN108832953A CN201810766748.0A CN201810766748A CN108832953A CN 108832953 A CN108832953 A CN 108832953A CN 201810766748 A CN201810766748 A CN 201810766748A CN 108832953 A CN108832953 A CN 108832953A
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- main controller
- power supply
- bluetooth module
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/385—Transceivers carried on the body, e.g. in helmets
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Power Sources (AREA)
Abstract
The invention discloses a kind of circuits for wisdom bracelet, including main controller circuit, bluetooth module, gravity sensor, storage card, usb circuit, power supply processing circuit, it is characterised in that：The gravity sensor is connect with bluetooth module, and bluetooth module and storage card are connect with main controller circuit；Usb circuit is connect with main controller circuit and power supply processing circuit；Power supply processing circuit is connect with main controller circuit.Through the invention, the guidances such as house health care, emergency risk prevention and alarm are provided for patient and intervened, improve the safety of patient house rehabilitation service.
Description
Technical field
The present invention relates to a kind of wisdom bracelets, more particularly to a kind of wisdom bracelet for monitoring limb activity information.
Background technique
Headstroke group patient is as a kind of special PATIENT POPULATION, in rehabilitation course, need to its health, movement with
The multiple informations such as activity of daily living are monitored.For this purpose, the present invention constructs cloud big data management and analysis platform, deeply
It studies patient and looks after the activity habit of personnel and look after demand, the matched wisdom bracelet developed based on Internet of Things,
It records patient and is good for side and affected limb information, realize the informationization of " monitor, look after, rehabilitation ", be easy to doctor to the daily work of patient
It moves detect and comments intervention means and online interaction formula management with rehabilitation, provide house health care, emergency risk for patient
The guidance such as prevention and alarm and intervention, improve the safety of patient house rehabilitation service.
Summary of the invention
Purpose to realize the present invention, is achieved using following technical scheme：
A kind of circuit for wisdom bracelet, including main controller circuit, bluetooth module, gravity sensor, storage card,
Usb circuit, power supply processing circuit, wherein：The gravity sensor is connect with bluetooth module, bluetooth module and storage card with
Main controller circuit connection；Usb circuit is connect with main controller circuit and power supply processing circuit；Power supply processing circuit and master
Controller circuitry connection；Wherein,
Bluetooth module with the external world for being communicated；Gravity sensor is used to detect the variation of acceleration, and will test
Detection data be sent to bluetooth module, main controller circuit is sent to by bluetooth module, and be stored in storage card；Main control
Device circuit is used to control the overall work of wisdom bracelet；Battery is for powering；Usb circuit is used to fill with peripheral hardwares or USB are waited
Electric appliance is attached, and is provided electric power and is carried out data transmission；Power supply processing circuit is used to battery is charged and be carried out switch touching
Hair control.
The circuit, wherein：Wherein usb circuit includes USB interface U2, and it is total that the pin 1 of U2 connects external circuit
Line voltage VBUS；Pin 1 also connects one end of capacitor C3, C3 other end ground connection；The pin 2 and pin 3 of U2 is separately connected master control
The emulation interface connecting pin of device circuit processed；The pin 4 of U2 is hanging, and pin 5 is grounded.
The circuit, wherein：Power supply processing circuit includes charging chip U3, battery, PNP triode Q1, NPN triode
Q2, touch switch S1, diode D1, diode D2, resistance R1, resistance R3, resistance R4, resistance R5.
The circuit, wherein：The pin 1 of U3 is connected to the pin 5 of master controller U4, and pin 2 is grounded, and pin 3 connects electricity
One end of the emitter and R1 of pond anode and Q1；The collector of Q1 connects the end VQ1, provides comparison voltage, and the base stage of Q1 connects R1
The other end of resistance and one end of resistance R3, the anode of the other end connection diode D2 of R3 and the collector of NPN triode Q2,
The cathode of diode D2 and the cathode of diode D1 are connected to together and are commonly connected to one end of touch switch S1, and S1's is another
End ground connection；The PA4 pin 1 of the anode connection master controller of D1；The emitter of triode Q2 is grounded, and is connected between base stage and emitter
Connecting resistance R5, base stage connect one end of resistance R4, the PA5 pin 3 of another termination master controller U4 of R4, the emitter ground connection of Q2.
The circuit, wherein：Between resistance R2 and ground, it is provided with a normally closed switch, for controlling resistance R2 and ground
On-off.
The circuit, wherein：Power supply processing module further includes power-switching circuit, which includes pressure stabilizing
The pin 1 of chip U3, U3 connect the end VQ1, and connect with one end of capacitor C1, C1 other end ground connection；2 ground terminal of pin of U3；
U3 pin 3 is connected with the end VQ1；The pin 4 of U3 connects one end C4 other end ground connection of capacitor C4；The pin 5 of U3 is defeated as voltage
Outlet, and one end of filter capacitor C2 is connected, C2 other end ground connection.
The circuit, wherein：Main controller circuit includes that the pin 1,3 of master controller chip U4, U4 connect D1's respectively
One end of anode and R4；U4 pin 6 is the pin 5 of U1, pin 15) ground connection, the termination 3.3V voltage of resistance R10 mono-, another termination
U4 pin 8, the one end capacitor C14 ground connection, another termination U4 pin 8；U4 pin 2 connects the second anode, and the second battery cathode connects
Ground.
The circuit, wherein：Main controller circuit further includes display module, and the pin 4 of U4 connects by one end of resistance R6,
The R6 other end is connected with photodiode, photodiode other end ground connection.
A kind of wisdom bracelet, including as above one of described in circuit.
Detailed description of the invention
Fig. 1 is the wisdom bracelet circuit system structure schematic diagram for monitoring limb activity information；
Fig. 2 is usb circuit schematic diagram；
Fig. 3 is switch triggering circuit diagram；
Fig. 4 is power-switching circuit schematic diagram；
Fig. 5 is the connection schematic diagram of master controller and usb circuit, switch triggering circuit and power-switching circuit.
Specific embodiment
Below in conjunction with attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Usually described in attached drawing here
It can arrange and design with a variety of different configurations with the component of the embodiment of the present invention shown.Therefore, below in attached drawing
The detailed description of the embodiment of the present invention of middle offer is not intended to limit the range of claimed invention, but only table
Show selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not making creative work
Under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
The wisdom bracelet circuit structure diagram of the invention such as Fig. 1, including main controller circuit, Bluetooth module, gravity pass
Sensor (such as LIS3DH), TF card, power management module.
It is illustrated below in conjunction with Fig. 2-5 pairs of foregoing circuits.
Powerful, the SoC of the multi-protocols of high flexible, such as nRF51822 can be selected in bluetooth module, can be suitable for
The wireless application of Bluetooth Low Energy and 2.4GHz.The SoC is the microprocessor based on ARM Cortex M0 for kernel, is possessed
The on piece FLASH memory space of 256KB/128KB, the ram space of 32KB/16KB.Chip supports BLE4.0 and incorporates to penetrate
Take place frequently transmit-receive radio road, is highly suitable to be applied on wearable device.NRF51822 be also responsible for while handling BLE4.0 protocol stack and
Gravity accelerometer is communicated, and carries out the processing of acceleration of gravity information, can be under the control of master controller chip
It is communicated with the external world, receives or sends the information such as detection data.
Gravity sensor is used to perceive the variation of acceleration, and acceleration is exactly when object acts on object in accelerator
On power, such as shake, fall, the various mobile variations such as up and down can be converted into electric signal, then pass through micro process
After the calculating analysis of device, it will be able to realize the good function of programming.The detection data that gravity sensor detects is sent to indigo plant
Tooth module sends main controller circuit to by bluetooth module, and is stored in storage card.
As shown in Fig. 2, being usb circuit of the invention.U2 is the interface for connecting USB, for the peripheral hardwares such as computer with
And USB charger is attached, for providing electric power for power supply processing module and providing data to main controller or from main control
Device obtains data.Wherein the end VBUS (pin 1) as voltage input end connect external circuit bus voltage VBUS, voltage of VBUS by
The USB interface of external equipment such as computer or USB charger provides, and generally+5V voltage, VBUS also connect capacitor C3, acts on and is
High frequency filter plays the role of filtering, decoupling, eliminates high-frequency noise.The capacitance of C3 is 2.2 μ F, C3 other ends ground connection.D-(DM)
Hold the end SWDIO of (pin 2) connection main controller circuit；D+ (DM) holds the end SWCLK of (pin 3) connection main controller circuit,
SWDIO and SWCLK is emulation interface connecting pin, and master controller chip U4 is written for program.The end ID (pin 4) vacantly, GND
(pin 5) ground connection.
As shown in figure 3, there is the power switch circuit (i.e. power supply processing circuit in Fig. 1) of charge function for the present invention,
Battery charging and switch triggering function are provided.
Power supply processing circuit includes charging chip U3, and the optional TP4054 of the chip, which is a kind of linear lithium-ion electric
Pond charging chip, pin connection are as follows：/ CHRG (pin 1)：The pin is open-drain charged state output end, is connected to
The end CHRG (pin 5) of master controller U4.
Pin 7 is detected in the state that pin 5 exports high level, if pin 7 is that low level so illustrates in charging shape
State, if pin 7 is that high level so shows charging complete.When battery capacity deficiency, TP4054 /CHRG (pin 1) gives
The end CHRG (pin 5) of master controller issues low level signal；In battery BAT1 charging process, at the pin 5 of master controller
In output state, charging signals are issued, pin 7 is in input state, for detecting the feedback signal at the end CHRG；When battery is full of
When electric ,/CHRG (pin 1) issues high level signal to the pin 5 of master controller.
The timer Timer3 of master controller carries out charged state detection to pin 5, and the Timer3 setting break period is 1
Second, carry out within every 2 seconds a charged state detection.
GND (pin 2)：Ground connection；
BAT (pin 3)：Charging current output end, connection battery BAT1 anode, the emitter of PNP triode Q1 and the Europe 10K
One end of the resistance R1 of nurse.The collector of Q1 connects the end VQ1, provides comparison voltage, the other end of the base stage connection R1 resistance of Q1
With one end of 3K ohm of resistance R3, the anode and NPN triode Q2 of other end connection diode D2 (optional 1N4148) of R3
Collector, the cathode of the cathode and diode D1 (optional 1N4148) of diode D2 is connected to together and is commonly connected to touch-control
One end of switch S1, the other end ground connection of S1.The PA4 pin of the anode connection master controller of D1.The emitter of triode Q2 connects
Ground connects resistance R5 between base stage and emitter, base stage connects one end of resistance R4, and the resistance value of R4, R5 are respectively 5.1K ohm
With 10K ohm, R4 it is another termination master controller PA5 pin, Q2 emitter ground connection.PA4 pin is examined for master controller
Survey whether S1 is closed, PA5 pin is that control signal is issued for master controller to control Q1, Q2 conducting.
When work, BAT (pin 3) provides charging current to battery and final float charge voltage is adjusted to 4.2V.U3 passes through
One accurate internal resistive voltage divider sets float charge voltage, and in shutdown mode, which is disconnected.
VCC (pin 4)：Positive input power voltage terminal.The pin (pin 4) is powered to TP4054 chip.The variation model of VCC
4.25V is trapped among between 6.5V.When VCC is down within the 30mV that and difference higher than BAT pin voltage is less than, TP4054, which enters, to stop
Machine mode, to make battery charge IBATIt is down to 2 μ A or less.In order to protect rechargeable battery, when VCC is down to than BAT (pin
3) voltage is small and when difference is more than 30mV, and TP4054 stops working.The pin (pin 4) connects bus voltage VBUS.
PROG (pin 5)：The pin is charging current setting, charging current monitoring and shuts down pin.In the pin and ground
Between connection one precision be 1% resistance R2, R2 resistance value be 10K ohm, it may be determined that charging current, charging current are that PROG draws
Foot exports 1000 times of electric current.When being charged under constant-current mode, the voltage of the pin is maintained at 1V, i.e. VR2Closely
It is 1V like value.The voltage on the pin be may be by all modes to calculate charging current, charging current IBAT
It indicates, 5 voltage V of pinR2It indicates, then has formula：IBAT=VR2/R2×1000.So IBAT=1V/10K Ω × 1000=
0.1A=100mA.
Between resistance R2 and ground, a settable normally closed switch is normally closed when pressing for controlling the on-off of resistance R2 and ground
After switch, resistance R2 and ground open circuit, PROG pin 5 is high level；When PROG pin voltage reaches TP4054 internal reference voltage
When 1.22V, TP4054 stops working；When resistance R2 restores the connection with ground, TP4054 resumes work.
In Fig. 3, in the power-offstate (power blackout situation), it is closed by lower switch S1, S1, the base stage of PNP type triode Q1
(by being connected to ground after resistance R3, diode D2 and S1) is pulled low, and the emitter and collector of triode Q1 is connected, in this way
Battery BT1 is by the way that, through giving power-switching circuit to power by the end VQ1, master controller enters working condition after triode Q1.Main control
Device runs program after starting power supply, draws high pin PA5 in initialization, and triode Q2 conducting in this way can be always by three poles
The base stage (by being grounded after R3, Q2) of pipe Q1 drags down, even if S1 is disconnected after this, can also guarantee that the base stage of triode Q1 is in
Low level keeps Q1 also constantly on, and power-switching circuit keeps power supply state.
Press S1 under open state, S1 closure, then the pin PA4 of master controller can be detected by diode D1 it is low
Level, PA5 is set low level by master controller at this time, and triode Q2 cut-off, after S1 disconnection, the base stage of triode Q1 is electric
Resistance R1 is pulled upward to high level, prevent the base stage of Q1, from maintaining low level, Q1 cut-off, power-switching circuit keeps power supply state knot
The power supply of beam, master controller disconnects.
The emitter of Q1 is 4.2V while charging, this 4.2V is that U3 (TP4054) is provided, and is being charged accordingly
When collector voltage be also 4.2V, but PN junction has a pressure drop, due to the pressure drop very little, it is possible to do not have to consider,
Therefore the voltage of Q1 emitter is exactly cell voltage when not charging, and collector is also the output voltage of battery.
This circuit realizes a key switch machine function, configures pull-up input for the pin PA4 of master controller, PA5 matches
It is set to output mode, high level is set by PA5 after power-up initializing, guarantees the conducting of Q1.Determine inside master controller
When device Timer5 in carry out the detection of PA4 input, the timing of Timer5 is 1 second, booted up by S1 mono- second,
It just sets low level for PA5 after pressing the button 5 seconds to shut down, it is, long-pressing S1 general 5 seconds are closed
Machine, can also come by adjusting delay time program decision button press how long after just shut down.Startup and shutdown are all
Have LED indication.
Power supply processing module further includes power-switching circuit, as shown in figure 4, being power-switching circuit, wherein
U1 is voltage stabilizing chip, may be selected RT9193, pin IN (pin 1) is input terminal, connect the end VQ1, and with capacitor C1
One end connection, C1 is decoupling capacitor, and effect is to filter out high frequency components, the capacitance of C1 be 2.2 μ F, the C1 other ends ground connection.
GND (pin 2) is ground terminal, ground connection.
EN (pin 3) is chip enable end, and high level is effective, is directly connected with the end VQ1, that is, the end VQ1 is as chip
Enable end.
BP (pin 4) is reference noise bypass end, connects one end of capacitor C4, and C4 capacitance is 470pF, another termination of C4
Ground.
OUT (pin 5) is output end, exports 3.3V voltage, connects one end of filter capacitor C2, and the capacitance of C2 is 2.2 μ
F, the C2 other end ground connection.
RT9193 has extremely low noise and quiescent current consumption, even working under pass-through state, current drain
Also there was only slight increase, can effectively extend service time of battery.It can cooperate steady operation with low ESR ceramic condenser, to sky
Between demand it is extremely low, this is to micro radio using most important.Only consumption is lower than the electric current of 0.01 μ A to RT9193 under shutdown mode,
Start-up course duration is shorter than 50 μ s.It has extremely low voltage difference, high output voltage precision, current limit protection and the suppression of high ripple
Ratio processed.As pin IN (pin 1) input voltage VQ1, at the same it is enabled to pin EN (pin 3), and U1 starts to work, the pin of U1
OUT (pin 5) exports 3.3V voltage, and the stable 3.3V voltage of the circuit output is powered to master controller.
As shown in figure 5, being main controller circuit, including master controller chip U4 (such as STM32F103) and its periphery electricity
Road is connected with usb circuit, switch triggering circuit and power-switching circuit：Pin PA4, PA5 of U4 respectively with phase in Fig. 3
The pin of the label answered connects, CHRG and the connection of the pin of corresponding U4 chip, SWDIO, SWCLK and label corresponding in Fig. 2
Pin connection.The SWDIO and SWCLK of U4 chip are emulation interface connecting pins, and U4 chip is written for program.
The power end (pin 6) of U4 connects 3.3V voltage (i.e. the pin 5 of U1), and ground terminal (pin 15) is grounded GND, the end NRST
The connection of pin 8 by 3.3V power supply, the asynchronous reset circuit that form of (GND), R10 and C14, R10 be resistance value 10K ohm of electricity
Resistance, C14 are the capacitor of 0.1 μ F of capacitance, and R10 mono- terminates 3.3V voltage, another termination NRST；The one end C14 ground connection, another termination
NRST, NRST connect the asynchronous reset pin 8 of U4.NRST (pin 8) is electrification reset, i.e., in the moment powered on, because electric
The voltage of appearance cannot be mutated, so the voltage on capacitor both sides is that zero, NRST resets, capacitor charging, resets over time
Failure.When NRST input low level, U4 is in reset state, resets all internal registers.When reset, no
The register of RTC in U4 and backing storage can be reset, because they are to be supplied with battery BT2 by special VBAT foot
Electricity.VBAT end pipe foot 2 connects the anode of battery BT2Battery, battery cathode ground connection, which is used for the clock of U4 chip
Circuit RTC power supply, makes its internal clocking punctual timing.
The connection of display module is as follows：The PA8_LED of U4 terminates the indicating circuit being made of R6 and photodiode play,
R6 mono- terminates PA8_LED, and the other end is connected with photodiode play anode, diode other end cathode ground connection.In shutdown shape
It unclamps and boots up after being pressed under state about 1 second, the LED light (photodiode play) after booting in equipment can be U4's
It is primary to control lower 2 seconds quick flashings, the rhythm that normal operating conditions can also keep 2 seconds quick flashings primary；2 seconds pines of long-pressing under open state
Enter off-mode after opening, the LED light under off-mode on plank is OFF state.
It needs to press power button S1 it should be noted that carrying out charging in off-mode and just can be carried out charging instruction, charged
The every 500ms of LED is lighted once in journey, that is, can uniformly be lighted and be extinguished within each second and is primary.LED light can be restored after fully charged
The primary rhythm of 2 seconds quick flashings.
Wisdom bracelet with this circuit at work can be by signal that accelerometer detects by master controller
Chip estimates patient and is good for the step number that limb skidding is walked, height, the walking mileage of stair activity etc., also can detecte patient's Ipsilateral
Limb motion situation；TF card can be used for record position information, movable condition information etc..Pass through detection to these data and place
Reason realizes the movable intellectual monitoring of centering limbs of patient.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. a kind of circuit for wisdom bracelet, including main controller circuit, bluetooth module, gravity sensor, storage card, USB
Interface circuit, power supply processing circuit, it is characterised in that：The gravity sensor is connect with bluetooth module, bluetooth module and storage
Card is connect with main controller circuit；Usb circuit is connect with main controller circuit and power supply processing circuit；Power supply processing circuit
It is connect with main controller circuit；Wherein,
Bluetooth module with the external world for being communicated；Gravity sensor is used to detect the variation of acceleration, and the inspection that will test
Measured data is sent to bluetooth module, sends main controller circuit to by bluetooth module, and be stored in storage card；Master controller electricity
Road is used to control the overall work of wisdom bracelet；Battery is for powering；Usb circuit is used for and waits peripheral hardwares or USB charger
It is attached, electric power is provided and carries out data transmission；Power supply processing circuit is used to charging to battery and carrying out switch triggering control
System.
2. circuit according to claim 1, it is characterised in that：Wherein usb circuit includes USB interface U2, the pipe of U2
Foot 1 connects external circuit bus voltage VBUS；Pin 1 also connects one end of capacitor C3, C3 other end ground connection；2 He of pin of U2
Pin 3 is separately connected the emulation interface connecting pin of main controller circuit；The pin 4 of U2 is hanging, and pin 5 is grounded.
3. circuit according to claim 1, it is characterised in that：Power supply processing circuit includes charging chip U3, battery, PNP
Triode Q1, NPN triode Q2, touch switch S1, diode D1, diode D2, resistance R1, resistance R3, resistance R4, resistance
R5。
4. a kind of wisdom bracelet, it is characterised in that including the circuit as described in one of claim 1-3.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810766748.0A CN108832953B (en) | 2018-07-13 | 2018-07-13 | Wisdom bracelet of monitoring limbs activity information |
| CN202010765847.4A CN111934706B (en) | 2018-07-13 | 2018-07-13 | Wisdom bracelet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810766748.0A CN108832953B (en) | 2018-07-13 | 2018-07-13 | Wisdom bracelet of monitoring limbs activity information |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010765847.4A Division CN111934706B (en) | 2018-07-13 | 2018-07-13 | Wisdom bracelet |
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| Publication Number | Publication Date |
|---|---|
| CN108832953A true CN108832953A (en) | 2018-11-16 |
| CN108832953B CN108832953B (en) | 2020-10-20 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010765847.4A Active CN111934706B (en) | 2018-07-13 | 2018-07-13 | Wisdom bracelet |
| CN201810766748.0A Active CN108832953B (en) | 2018-07-13 | 2018-07-13 | Wisdom bracelet of monitoring limbs activity information |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010765847.4A Active CN111934706B (en) | 2018-07-13 | 2018-07-13 | Wisdom bracelet |
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| CN (2) | CN111934706B (en) |
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| CN110580070A (en) * | 2019-10-22 | 2019-12-17 | 揭阳市顺资电子实业有限公司 | Temperature control circuit and vibrating spear |
| CN110609508A (en) * | 2019-10-17 | 2019-12-24 | 国家康复辅具研究中心 | CAN communication awakening-based standby zero-power-consumption wheelchair control system and method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108832953B (en) | 2020-10-20 |
| CN111934706B (en) | 2022-02-15 |
| CN111934706A (en) | 2020-11-13 |
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