CN111773652A - Low-power multi-function wearable smart device and data acquisition method thereof - Google Patents

Abstract

The invention discloses a low power consumption multifunctional wearable intelligent device and a data acquisition method thereof. The wearable smart device includes a processor, the processor and an external trigger module, a display module, a battery and power management module, a temperature and power detection module, a motion sensor, a storage module, a vital sign sensor, a positioning module, a short-range communication module, and an external trigger module located outside the processor. The long-distance communication module is connected, wherein: the processor dynamically configures the sampling rate for the motion sensor and dynamically configures the LED pulse width, LED power and sampling rate for the vital sensor based on the battery power collected in real time by the temperature and power detection module. On the basis of collecting various data of motion and physical signs, the invention has the functions of long-distance and short-distance communication and positioning, and has low power consumption.

Description

Low-power multi-function wearable smart device and data acquisition method thereof

technical field

The invention relates to a low-power multi-function wearable smart device with long-distance and short-range communication and positioning functions, and a method for collecting motion and sign data by the wearable smart device, belonging to the field of wearable smart devices.

Background technique

In recent years, wearable smart devices have attracted more and more people's attention and attention. It can monitor the wearer's exercise status and the wearer's health status. Today, it is increasingly used to monitor athletes in sports training, especially in competitions, which allows athletes to better improve their individual abilities or adjust their collective strategies and tactics to optimize sports results , the purpose of defeating the opponent. In use, various sports data and physical data of athletes are usually collected through wearable smart devices, and these data are analyzed for scientific optimization and adjustment.

There are many kinds of wearable smart devices currently on the market, and their structure is basically as shown in Figure 1, including Bluetooth SOC 11, Bluetooth SOC 11 and its external trigger button 12, OLED display 13, lithium battery and power management The module 14 , the battery voltage detection module 15 , the 3-axis accelerometer 16 , the Flash memory 17 , the heart rate sensor 18 and the matching circuit 19 are connected. From the actual use, it can be found that the existing wearable smart devices have the following shortcomings: only the acceleration sensor is used, which can only record the number of steps; only the heart rate sensor is used, which can only play the sleep monitoring function; only the Bluetooth communication function is supported, and the Communication over long distances is limited. It can be seen that the existing wearable smart devices do not really give full play to their monitoring advantages in sports and health.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a low-power multi-function wearable smart device and a method for collecting motion and physical sign data by the wearable smart device. Distance communication, positioning function, low power consumption.

In order to achieve the above object, the present invention adopts the following technical solutions:

A low-power multi-functional wearable smart device is characterized in that: it includes a processor, an external trigger module located outside the processor, a display module, a battery and power management module, a temperature and power detection module, a motion sensor, a storage The module, the vital sensor, the positioning module, the short-range communication module and the long-distance communication module are connected, wherein: the processor dynamically configures the sampling rate for the motion sensor and the LED pulse width for the vital sensor based on the battery power collected in real time by the temperature and electricity detection module , LED power and sampling rate.

A data acquisition method based on the low-power multi-functional wearable smart device, characterized in that it comprises the steps of:

1) The temperature and electricity detection module collects the external power supply voltage of the battery in real time;

2) according to the collected external power supply voltage of the battery, make the wearable smart device enter a corresponding working mode;

3) According to the working mode entered by the wearable smart device at this time, configure the sampling rate for the motion sensor and configure the LED pulse width, LED power and sampling rate for the physical sensor, so that the motion sensor and all The sign sensor is in a low-power operating state;

4) The motion sensor and the physical sign sensor start to collect motion and physical sign data respectively.

The advantages of the present invention are:

On the one hand, the wearable intelligent device of the present invention can complete the collection of the wearer's movement and physical sign data in a low power consumption state, avoid excessive waste of power by the device, and greatly prolong the use time of the device; Distance communication and positioning functions have expanded the application occasions, enabling wearable smart devices to truly give full play to their monitoring advantages in sports and health.

The wearable smart device of the present invention has three working modes—high-performance mode, medium-performance mode and power-saving mode. In actual use, the wearer can manually trigger the switching of the working modes, or the wearable smart device can judge by itself to enter an appropriate mode. The working mode is flexible to use, which greatly improves the performance of the device.

Description of drawings

FIG. 1 is a schematic structural diagram of an existing wearable smart device.

FIG. 2 is a schematic diagram of the composition of the wearable smart device of the present invention.

FIG. 3 is a schematic diagram of a preferred embodiment of the wearable smart device of the present invention.

FIG. 4 is a schematic diagram of another preferred embodiment of the wearable smart device of the present invention.

FIG. 5 is a flow chart of the realization of the data acquisition method of the present invention.

Detailed ways

As shown in FIG. 2 , the low-power multi-function wearable smart device of the present invention includes a processor 31 with data processing, data receiving and sending capabilities, the processor 31 and an external trigger module 32, a display module 33, a battery and a power supply located outside the processor 31. The management module 34 , the temperature and electricity detection module 35 , the motion sensor 36 , the storage module 38 , the vital sign sensor 37 , the positioning module 39 , the short-range communication module 41 and the long-distance communication module 42 are connected, wherein: the processor 31 is based on the temperature and electricity detection module 35 The real-time collection of the power of the external power supply from the battery is used to dynamically configure the sampling rate parameters for the motion sensor 36 and the LED pulse width, LED power and sampling rate parameters for the vital sensor 37, so that the motion sensor 36 and the vital sensor 37 are always in low power consumption The data collection is carried out in the working state, so that the device of the present invention can be in the running state for a long time, and the service life of the device is greatly prolonged.

During actual operation, the processor 31 is started, the temperature and electricity detection module 35 starts to collect the human body temperature and the ambient temperature and the external power supply voltage of the battery. Then, based on the size of the external power supply voltage of the battery at this time, the wearable smart device of the present invention enters the corresponding Working mode, in the current working mode, the motion sensor 36 completes the parameter configuration and starts to collect motion data. Similarly, the physical sensor 37 completes the parameter configuration and starts to collect physical data. At the same time, the positioning module 39 obtains position information in real time. The motion, signs, and position data are fed back to the processor 31 for corresponding processing in real time, and stored and displayed, and then the short-range communication module 41 or the long-distance communication module 42 is selected according to the actual demand or the remaining power of the device itself to the terminal application layer. Transfer data for subsequent processing.

In actual use, the motion sensor 36 and the vital sign sensor 37 can also be manually triggered and selected by the external trigger module 32 to enter the corresponding working mode.

In actual use, the wearable smart device of the present invention combines short-distance communication and long-distance communication, and the processor 31 can automatically determine whether to use short-distance communication or long-distance communication for data transmission according to the battery level. The triggering module 32 manually triggers the selection of short-range communication or long-distance communication.

The wearable smart device of the present invention integrates a real-time positioning function, which makes it possible to obtain the wearer's movement position information in real time, thereby facilitating the system to analyze the teamwork efficiency, optimize the personnel allocation structure, and the like.

In the present invention, short distance means that the distance between devices and gateways or between devices for data transmission is less than or equal to 50m, and long distance means that the distance between devices and gateways for data transmission is greater than 50m and less than or equal to 15km.

FIG. 3 shows a preferred embodiment of the wearable smart device of the present invention. In Figure 3:

The processor 31 and the short-range communication module 41 shown in FIG. 2 are implemented by a BLE (Bluetooth Low Energy) processor 210 configured with a corresponding matching circuit (ie, the matching circuit 210 ″ shown in FIG. 4 ). The BLE processor 210 has Processor for Bluetooth Low Energy functionality.

The external trigger module 32 shown in FIG. 2 is designed as a trigger button 22 .

The display module 33 shown in FIG. 2 is designed as an OLED display screen 23 . The OLED display screen 23 is an existing display screen in the art.

The battery and power management module 34 shown in FIG. 2 includes a battery and a power management module. The signal port of the battery is connected to the corresponding signal port of the processor 31 through the power management module. The battery supplies power to each module and device. In FIG. 3 , the battery It is designed as a lithium battery, that is, the lithium battery and the power management module 24 shown in FIG. 3 are used. The power management module is used to monitor the charging and discharging of the battery, and the power management module is realized by using a well-known electronic module in the art.

The temperature and electricity detection module 35 shown in FIG. 2 includes a temperature detection module 28 for detecting the temperature of the human body surface and the ambient temperature contacted by the wearable smart device of the present invention, and a battery voltage detection module for detecting the external power supply voltage value of the battery 25. As shown in FIG. 3, the temperature detection module 28 and the battery voltage detection module 25 are implemented by existing modules in the field.

The motion sensor 36 shown in FIG. 2 is designed as a 9-axis motion sensor 26. The 9-axis motion sensor 26 includes a 3-axis accelerometer, a 3-axis gyroscope, and a 3-axis magnetometer, and a 3-axis accelerometer, a 3-axis gyroscope, and a 3-axis magnetometer. The meters are respectively used to obtain the acceleration, angular velocity and magnetic field strength of the device, which are all existing devices in the art.

The storage module 38 shown in FIG. 2 is designed as a flash memory 213 .

The vital sign sensor 37 shown in FIG. 2 is designed as a heart rate blood oxygen sensor 27 . The heart rate and blood oxygen sensor 27 is used to obtain the wearer's heart rate value and blood oxygen value. The heart rate and blood oxygen sensor 27 is realized by using existing devices in the art, and of course other sensors such as ECG can also be designed.

In actual use, the use of the 9-axis motion sensor 26 and the heart rate and blood oxygen sensor 27 enables the device of the present invention to obtain not only various postures of the wearer during exercise, but also various health information of the wearer.

The positioning module 39 shown in FIG. 2 is designed as a BDS (Beidou Navigation Satellite System, abbreviation for BeiDou Navigation Satellite System) module 212 configured with a corresponding matching circuit (ie, the matching circuit 212 ″ shown in FIG. 4 ). The BDS module 212 is used for To obtain the movement position information of the wearer, it can also be combined with the 9-axis movement sensor 26 to further improve the positioning accuracy. The BDS module 212 is implemented by using existing modules in the field.

The long-distance communication module 42 shown in FIG. 2 is designed as a LoRa (long-distance radio, abbreviation for Long Range Radio) module 211 configured with a corresponding matching circuit (ie, the matching circuit 211 ″ shown in FIG. 4 ). The LoRa module 211 adopts this An existing module implementation of the domain.

In the present invention, the BLE communication method enables the wearable smart device of the present invention to perform data transmission with mobile terminals such as mobile phones in a short distance situation, and the LoRa communication method enables the wearable smart device of the present invention to communicate with the LoRa gateway terminal in a long distance situation. For data transmission, both methods can transmit the data collected by the wearable smart device of the present invention to the application layer of the terminal.

As shown in FIG. 4, in the actual design, the BLE processor 210, LoRa module 211 and BDS module 212 shown in FIG. 3 can be integrated with the Flash memory 213 as a SOC system after separating their respective matching circuits 210", 211", and 212". 21, in order to realize the miniaturization of the wearable smart device of the present invention, as shown in FIG. 4, the matching circuits 210'', 211'', 212'' are respectively connected with the BLE processor 210', the LoRa module 211' and the BDS which do not include the matching circuit. Module 212' is connected.

In the present invention, the matching circuits 210", 211", and 212" are analog circuits with communication capability, which are well-known circuits in the art, and will not be described in detail here.

Based on the above-mentioned low-power multi-function wearable smart device of the present invention, as shown in FIG. 5 , the present invention also proposes a data collection method, which includes the following steps:

1) Based on the control of the processor 31, the temperature and electricity detection module 35 collects the size of the external power supply voltage vol of the battery in the battery and the power management module 34 in real time;

2) According to the collected external power supply voltage vol of the battery, make the wearable smart device of the present invention enter a corresponding working mode;

3) Configure the sampling rate parameter for the motion sensor 36 and configure the LED pulse width, LED power and sampling rate parameters for the physical sensor 37 according to the working mode entered by the wearable smart device of the present invention, so that the motion sensor 36 and the physical sensor 37 37 is in a low-power operating state;

4) The motion sensor 36 and the vital sign sensor 37 start to collect motion and vital sign data respectively. This low power consumption operation mode enables the wearable smart device of the present invention to save a lot of power, thereby maintaining its longer operation.

Preferably, in step 2):

If the external power supply voltage vol of the battery is greater than or equal to 3.5V, the wearable smart device of the present invention enters a high-performance mode;

If the external power supply voltage vol of the battery is greater than 3.0V but less than 3.5V, the wearable smart device of the present invention enters the medium performance mode;

If the external power supply voltage vol of the battery is less than or equal to 3.0V, the wearable smart device of the present invention enters a power saving mode.

When the wearable smart device of the present invention enters the high-performance mode, the sampling rate configuration range of the motion sensor 36 is 500Hz-2000Hz, the LED pulse width configuration range of the vital sign sensor 37 is 300μs-500μs, the LED power configuration The rate configuration range is 1000sps～2000sps;

When the wearable smart device of the present invention enters the medium performance mode, the sampling rate configuration range of the motion sensor 36 is 100Hz-500Hz, the LED pulse width configuration range of the vital sensor 37 is 100μs-300μs, the LED power configuration The rate configuration range is 500sps ~ 1000sps;

When the wearable smart device of the present invention enters the power saving mode, the configuration range of the sampling rate of the motion sensor 36 is 10Hz～100Hz, the configuration range of the LED pulse width of the vital sign sensor 37 is 10μs～100μs, the configuration range of the LED power is 7mA～15mA, and the sampling rate The rate configuration range is 100sps to 500sps.

Preferred embodiment:

When the wearable smart device of the present invention enters the high-performance mode, the sampling rate of the motion sensor 36 is configured to be 2000Hz, the LED pulse width of the vital sensor 37 is configured to be 400μs, the LED power is configured to be 25mA, and the sampling rate is configured to be 2000sps.

When the wearable smart device of the present invention enters the medium performance mode, the sampling rate of the motion sensor 36 is configured to be 100 Hz, the LED pulse width of the vital sensor 37 is configured to be 300 μs, the LED power is configured to be 15 mA, and the sampling rate is configured to be 1000 sps.

When the wearable smart device of the present invention enters the power saving mode, the sampling rate of the motion sensor 36 is configured to be 10Hz, the LED pulse width of the vital sensor 37 is configured to be 100μs, the LED power is configured to be 7mA, and the sampling rate is configured to be 500sps.

The advantages of the present invention are:

On the one hand, the wearable intelligent device of the present invention can complete the collection of the wearer's movement and physical sign data in a low power consumption state, avoid excessive waste of power by the device, and greatly prolong the use time of the device; Distance communication and positioning functions have expanded the application occasions, enabling wearable smart devices to truly give full play to their monitoring advantages in sports and health.

The wearable smart device of the present invention has three working modes—high-performance mode, medium-performance mode and power-saving mode. In actual use, the wearer can manually trigger the switching of the working modes, or the wearable smart device can judge by itself to enter an appropriate mode. The working mode is flexible to use, which greatly improves the performance of the device.

The above are the preferred embodiments of the present invention and the technical principles used by them. For those skilled in the art, without departing from the spirit and scope of the present invention, any technology based on the technical solutions of the present invention, etc. Obvious changes such as effective transformation, simple replacement, etc., all fall within the protection scope of the present invention.

Claims (6)

1. a low-power multi-functional wearable smart device is characterized in that: it comprises a processor, and the processor and an external trigger module, a display module, a battery and a power management module, a temperature and electricity detection module, a motion sensor located outside of the processor , a storage module, a vital sensor, a positioning module, a short-range communication module and a long-distance communication module are connected, wherein: the processor dynamically configures the sampling rate for the motion sensor and dynamically configures the LED for the vital sensor based on the battery power collected in real time by the temperature and power detection module Pulse width, LED power and sample rate. 2. The low power consumption multifunctional wearable smart device of claim 1, wherein: The processor and the short-range communication module are implemented by a BLE processor configured with a corresponding matching circuit; The external trigger module is a trigger button; The display module is an OLED display screen; The battery and power management module includes a battery and a power management module, the battery is connected to the processor through the power management module, wherein: the battery is a lithium battery; The temperature and electricity detection module includes a temperature detection module for detecting the body surface temperature and ambient temperature of the contacted human body, and a battery voltage detection module for detecting the external power supply voltage value of the battery; The motion sensor is a 9-axis motion sensor; The storage module is a Flash memory; The physical sign sensor is a heart rate and blood oxygen sensor; The positioning module is a BDS module configured with a corresponding matching circuit; The long-distance communication module is a LoRa module configured with a corresponding matching circuit. 3. The low power consumption multifunctional wearable smart device of claim 2, wherein: The BLE processor, the LoRa module and the BDS module are separated from their respective matching circuits and integrated with the Flash memory to form an SOC system. 4. A data acquisition method based on the low power consumption multifunctional wearable smart device according to any one of claims 1 to 3, it is characterized in that, it comprises the steps: 1) The temperature and electricity detection module collects the external power supply voltage of the battery in real time; 2) according to the collected external power supply voltage of the battery, make the wearable smart device enter a corresponding working mode; 3) According to the working mode entered by the wearable smart device at this time, configure the sampling rate for the motion sensor and configure the LED pulse width, LED power and sampling rate for the physical sensor, so that the motion sensor and all The sign sensor is in a low-power operating state; 4) The motion sensor and the physical sign sensor start to collect motion and physical sign data respectively. 5. data acquisition method as claimed in claim 4, is characterized in that: In said step 2): If the external power supply voltage of the battery is greater than or equal to 3.5V, the wearable smart device enters a high-performance mode; If the external power supply voltage of the battery is greater than 3.0V but less than 3.5V, the wearable smart device enters a medium performance mode; If the external power supply voltage of the battery is less than or equal to 3.0V, the wearable smart device enters a power saving mode. 6. data acquisition method as claimed in claim 5, is characterized in that: When the wearable smart device enters the high-performance mode, the sampling rate configuration range of the motion sensor is 500Hz～2000Hz, the LED pulse width configuration range of the vital sensor is 300μs～500μs, and the LED power configuration range is 25mA～50mA , the sampling rate configuration range is 1000sps ~ 2000sps; When the wearable smart device enters the medium performance mode, the sampling rate configuration range of the motion sensor is 100Hz～500Hz, the LED pulse width configuration range of the vital sign sensor is 100μs～300μs, and the LED power configuration range is 15mA～25mA , the sampling rate configuration range is 500sps ~ 1000sps; When the wearable smart device enters the power saving mode, the sampling rate configuration range of the motion sensor is 10Hz～100Hz, the LED pulse width configuration range of the vital sign sensor is 10μs～100μs, and the LED power configuration range is 7mA～15mA , The sampling rate configuration range is 100sps ~ 500sps.

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