Intelligent bracelet for old people

Abstract

The invention discloses an intelligent bracelet for old people, and relates to the technical field of wearable equipment. A main control module; the heart rate detection module comprises an infrared light emitting diode and a phototriode, the infrared light emitting diode emits infrared light with different wavelengths under the control of the main control module, the phototriode receives the reflected infrared light to form an electric signal, and the main control module analyzes the electric signal to obtain heart rate data. And then summarizing the multiple pieces of heart rate data according to the accuracy rate of each wavelength to obtain final heart rate data. By adjusting the wavelength of the infrared light and summarizing the heart rate data of the infrared light with different wavelengths, the accuracy of the heart rate detection result is improved, and it is ensured that help can be provided at the first time when the heart rate of the old is abnormal.

Description

Technical Field

[0001] This application relates to the technical field of wearable devices, and particularly relates to an intelligent bracelet for the elderly. Background Art

[0002] The elderly is a general term for people aged 60 and above. As they age, the physical functions of the elderly gradually decline. In particular, there are obvious changes in limb coordination, physical strength, etc. Therefore, during the daily life of the elderly, special care is needed to avoid accidents such as falls as much as possible, and to notify their families in time when there are significant changes in physiological data such as heart rate and body temperature, so as to provide help immediately.

[0003] In order to timely learn about the real-time health status of the elderly, many families will wear various wearable devices for the elderly, such as bracelets. These wearable devices collect the physiological data of the elderly in real time and transmit it to the mobile terminal used by the family through the network. Among various physiological data, heart rate is a very important one. Currently, the bracelet mainly detects the heart rate through the way of infrared emission and reception. However, different from other age groups, the physical indicators of the elderly are all declining. The decline in the functions of the elderly in terms of skin, blood vessels, blood, etc. will lead to inaccurate heart rate detection results, thereby affecting the family's understanding of the health status of the elderly. However, there is currently no bracelet specially designed for the elderly. Summary of the Invention

[0004] The embodiments of this application provide an intelligent bracelet for the elderly to solve the problem of inaccurate heart rate detection of the bracelet for the elderly in the prior art.

[0005] The embodiments of this application provide an intelligent bracelet for the elderly, including:

[0006] A main body;

[0007] A main control module, arranged inside the main body;

[0008] A heart rate detection module, arranged on the surface of the main body. The heart rate detection module includes an infrared light-emitting diode and a photosensitive triode. Both the infrared light-emitting diode and the photosensitive triode are electrically connected to the main control module. The infrared light-emitting diode emits infrared light of different wavelengths under the control of the main control module. The photosensitive triode receives the infrared light reflected by the wrist of the elderly and converts the infrared light into corresponding electrical signals. The main control module analyzes the electrical signals corresponding to the infrared light of each wavelength to obtain the corresponding heart rate data, and then summarizes multiple heart rate data according to the accuracy rate of each wavelength to obtain the final heart rate data;

[0009] A wristband loop, connected to the main body, and the wristband loop is used to wear the main body on the wrist of the elderly.

[0010] An intelligent bracelet for the elderly in this application has the following advantages:

[0011] By adjusting the wavelength of the infrared light emitted by the infrared light-emitting diode and summarizing the heart rate data corresponding to the infrared light of different wavelengths, the accuracy of the heart rate detection result is effectively improved, enabling the family members to accurately understand the health status of the elderly and ensuring that help can be provided immediately when the heart rate of the elderly is abnormal. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 It is a schematic diagram of the overall structure of an intelligent bracelet for the elderly provided by an embodiment of the present application.

[0014] Figure 2 It is a schematic diagram of the structure of the main body provided by an embodiment of the present application.

[0015] Figure 3 It is a schematic diagram of the connection relationship of the circuit device provided by an embodiment of the present application.

[0016] Figure 4 It is a schematic diagram of the circuit connection of the main control module provided by an embodiment of the present application.

[0017] Figure 5 It is a schematic diagram of the circuit connection of the heart rate detection module provided by an embodiment of the present application.

[0018] Figure 6 It is a schematic diagram of the circuit connection of the acceleration sensor provided by an embodiment of the present application.

[0019] Figure 7 It is a schematic diagram of the circuit connection of the temperature sensor provided by an embodiment of the present application.

[0020] Figure 8 It is a schematic diagram of the circuit connection of the button module provided by an embodiment of the present application.

[0021] Figure 9 It is a schematic diagram of the circuit connection of the sound and light alarm module provided by an embodiment of the present application.

[0022] Figure 10 It is a schematic diagram of the circuit connection of the positioning module provided by an embodiment of the present application.

[0023] Explanation of attached drawing reference numerals: 1. Main body; 2. Housing; 3. Dial; 4. Power module; 5. Circuit device; 6. Main control module; 7. Wireless communication module; 8. Positioning module; 9. Acousto-optic alarm module; 10. Heart rate detection module; 11. Acceleration sensor; 12. Temperature sensor; 13. Screen display module; 16. Wristband loop; 17. Wristband buckle; 18. Position hole; 19. Fixed ring; 20. Position buckle; 21. Function key; 22. Up key; 23. Down key; 24. Button module; 25. Indicator light. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0025] Figures 1-10 It is a structural and circuit schematic diagram of a smart bracelet for the elderly provided by an embodiment of the present application. An embodiment of the present application provides a smart bracelet for the elderly, including:

[0026] Main body 1;

[0027] Main control module 6, arranged inside the main body 1;

[0028] Heart rate detection module 10, arranged on the surface of the main body 1. The heart rate detection module 10 includes an infrared light-emitting diode and a photosensitive triode. Both the infrared light-emitting diode and the photosensitive triode are electrically connected to the main control module 6. The infrared light-emitting diode emits infrared light of different wavelengths under the control of the main control module 6. The photosensitive triode receives the infrared light reflected by the wrist of the elderly and converts the infrared light into corresponding electrical signals. The main control module 6 analyzes the electrical signals corresponding to the infrared light of each wavelength to obtain corresponding heart rate data, and then summarizes the multiple heart rate data according to the accuracy rate of each wavelength to obtain the final heart rate data;

[0029] Wristband loop 16, connected to the main body 1. The wristband loop 16 is used to wear the main body 1 on the wrist of the elderly.

[0030] Exemplarily, the main control module 6 normalizes multiple accuracy rates to obtain accuracy rate weights within the range of [0, 1], and then performs weighted summation on multiple heart rate data using the accuracy rate weights to obtain the final heart rate data. Specifically, since obvious changes have occurred in the skin, blood vessels, blood, etc. of the elderly compared to people of other age groups, the heart rate detection results are not very accurate. To improve the accuracy of the heart rate detection results as much as possible, this application has pre-experimented with infrared light of different wavelengths. After calibrating the detection results and the true results during the experiment, the accuracy rates of infrared light at different wavelengths are set. After the infrared light irradiates the skin of the elderly's wrist, a part of the infrared light will be absorbed by red blood cells, and the remaining infrared light will be reflected and finally received by the photosensitive triode. For a certain wavelength of infrared light, the frequency of the electrical signal generated by the photosensitive triode represents the heart rate. Therefore, analyzing the frequency of the electrical signal of the infrared light of this wavelength can determine the corresponding heart rate data, that is, each wavelength of infrared light can determine a heart rate data. However, not all heart rate data are accurate, which is related to the absorption ratio of infrared light of different wavelengths. If only one fixed wavelength is used, it is easy to cause inaccurate heart rate detection results due to individual differences among the elderly. Therefore, this application uses multiple different wavelengths to detect the heart rate successively, considering multiple heart rate data at the same time, and then determining the final heart rate data.

[0031] Furthermore, to further adapt to the situations of different elderly people, when the elderly first use the smart bracelet, the smart bracelet can prompt the elderly to input their own physiological data, including gender, age, height, weight, etc. After inputting these physiological data, the main control module 6 will select the most appropriate accuracy rate from multiple accuracy rates according to the mapping relationship between the accuracy rate determined during the experiment and the physiological data, so as to support the subsequent calculation of heart rate data.

[0032] Furthermore, the main control module 6 adjusts the wavelength of the infrared light emitted by the infrared light-emitting diode by changing the voltage applied to the infrared light-emitting diode. Generally speaking, the wavelength of the infrared light-emitting diode is affected by many factors, including the materials, structure, and voltage used. Even if the materials and structure have been determined, adjusting the voltage within a safe range can also slightly change the wavelength of the infrared light. Specifically, the higher the voltage, the shorter the wavelength. The main control module 6 applies a fixed voltage to the infrared light-emitting diode each time. At this time, the emitted infrared light also has a fixed wavelength. After the photosensitive triode completes the reception of the infrared light of this wavelength, the main control module 6 adjusts the voltage, such as increasing or decreasing, and then applies the adjusted voltage to the infrared light-emitting diode again until all voltages have been applied.

[0033] The smart bracelet also includes a housing 2, and the main body 1 is installed in the housing 2.

[0034] In an embodiment of the present application, the housing 2 is made of silica gel material. The wristband loop 16 is connected to one end of the housing 2, and a wristband buckle 17 is connected to the other end of the housing 2. The wristband loop 16 is provided with a position hole 18 and a fixing ring 19. A plurality of position holes 18 are arranged along the length direction of the wristband loop 16. A position buckle 20 is arranged at a position near the end of the wristband buckle 17. When wearing the smart bracelet, first surround the wristband loop 16 and the wristband buckle 17 around the wrist, then align the position buckle 20 and insert it into a suitable position hole 18, and finally pass the wristband loop 16 through the fixing ring 19 to prevent the wristband loop 16 from moving randomly.

[0035] The main body 1 includes a watch face 3 and a power module 4. The smart bracelet further includes a circuit device 5, and the circuit device 5 is arranged inside the main body 1. Specifically, the circuit device 5 is located between the watch face 3 and the power module 4. The circuit device 5 is specifically a circuit main board. The main control module 6 is arranged on the circuit device 5 by welding. An acceleration sensor 11 is also arranged on the circuit device 5 by welding. The main control module 6 is electrically connected to the acceleration sensor 11. The acceleration sensor 11 is used to collect the acceleration data of the elderly in various directions. The main control module 6 analyzes the acceleration data to determine whether the elderly person has fallen.

[0036] In addition to the main control module 6 and the acceleration sensor 11, a wireless communication module 7, a positioning module 8 and an acceleration sensor 11 are also arranged on the circuit device 5 by welding. The wireless communication module 7, the positioning module 8 and the acceleration sensor 11 are all electrically connected to the main control module 6 through the circuit on the circuit device 5. The power module 4 can adopt a rechargeable lithium battery, which has a charging interface. The charging interface is arranged on the housing 2 to facilitate the elderly to charge during use. The power module 4 is connected to the main control module 6, the wireless communication module 7, the positioning module 8 and the acceleration sensor 11 through wires to supply power to these modules. In the embodiment of the present application, the main control module 6 adopts a single-chip microcomputer of model STM32F103C8T6, the heart rate detection module 10 is of model ST188, the acceleration sensor 11 is of model ADXL345, the temperature sensor 12 is of model DS18B20, and the positioning module 8 adopts a GPS (Global Positioning System) positioning chip.

[0037] In an embodiment of the present application, a temperature sensor 12 is further arranged on the surface of the main body 1 facing away from the watch face 3. The temperature sensor 12 is electrically connected to the main control module 6. After the elderly person wears the smart bracelet, the temperature sensor 12 contacts the wrist of the elderly person to collect the temperature data of the elderly person. The temperature data will be sent to the main control module 6 through the circuit on the circuit device 5.

[0038] In an embodiment of the present application, a screen display module 13 is further provided on the surface of the main body 1. The screen display module 13 adopts an LCD (liquid crystal display) or LED (light emitting diode) display screen, which is arranged on one side of the main body 1 close to the dial 3 inside. The dial 3 surrounds the screen display module 13 to provide protection for it. The screen display module 13 is electrically connected to the main control module 6, and the screen display module 13 is used to display heart rate data, temperature data, and the analysis result of whether a fall occurs.

[0039] In an embodiment of the present application, an acoustic and optical alarm module 9 is further provided on the surface of the main body 1. Specifically, the acoustic and optical alarm module 9 includes a speaker and an indicator light 25, both of which are arranged on the side surface of the main body 1 so that they will not be blocked after the smart bracelet is worn and will not affect the use of the elderly. The acoustic and optical alarm module 9 is electrically connected to the main control module 6. The main control module compares the heart rate data and temperature data with the corresponding thresholds. When the heart rate data exceeds the corresponding threshold, or the temperature data exceeds the corresponding threshold, or it is determined that the elderly person has fallen, the main control module 6 controls the acoustic and optical alarm module 9 to emit an acoustic and optical alarm.

[0040] Furthermore, a function key 21, an up key 22, and a down key 23 are provided on the outer side surface of the housing 2. The function key 21 is used to send a control instruction to the main control module 6 after being pressed by the elderly, and the main control unit 6 controls the screen display module 13 to display a function menu. The up key 22 and the down key 23 send control instructions to the main control module 6 after being pressed by the elderly, so that the main control module 6 switches the display content on the screen display module 13 to realize the switching of function options on the function menu. After a certain function option is opened, the up key 22 and the down key 23 can be operated to adjust thresholds such as heart rate thresholds and temperature thresholds to adapt to the actual situations of different elderly people. The above function key 21, up key 22, and down key 23 are collectively referred to as the button module 24, which is electrically connected to the main control module 6 through a wire.

[0041] In an embodiment of the present application, a wireless communication module 7 is further provided on the circuit device 5. The wireless communication module 7 is electrically connected to the main control module 6. The wireless communication module 7 sends the heart rate data, temperature data, and the analysis result of whether a fall occurs to the mobile terminal used by the family member through a wireless network. Specifically, a slot for inserting a SIM (Subscriber Identity Module) card is provided on the housing 2, and the slot extends into the main body 1. When the SIM card is inserted into the slot, it will be electrically connected to the main control module 6. The main control module 6 will send the heart rate data, temperature data, and fall analysis result to the communication server through a 4G (4th generation communication) or 5G (5th generation communication) network when needed, and finally the communication server forwards it to the mobile terminal used by the family member.

[0042] In an embodiment of the present application, a positioning module 8 is also provided on the circuit device 5 by welding. The positioning module 8 is electrically connected to the main control module 6. The positioning module 8 is used to collect the real-time position of the elderly through GPS technology, and the wireless communication module 7 sends the real-time position to the mobile terminal through the wireless network.

[0043] In an embodiment of the present application, a signal amplification module and a filtering module are also provided on the circuit device 5. The signal amplification module and the filtering module are sequentially connected between the photosensitive triode and the main control module 6. The signal amplification module is used to amplify the electrical signal, and the filtering module is used to filter the amplified electrical signal.

[0044] The usage method of the smart bracelet in the embodiment of the present application includes the following steps:

[0045] S1. The infrared light-emitting diode emits infrared light of different wavelengths. The photosensitive triode captures the subtle changes in blood flow under the irradiation of infrared light and accurately converts these light signals caused by pulse beats into electrical signals. Due to the difference in the reflection of light caused by blood flow, the intensity of the infrared light received by the photosensitive triode is different, which indirectly reflects the heart rate data. To ensure the effectiveness and accuracy of subsequent processing, the electrical signal also needs to be amplified, filtered, and shaped. Through calculation and analysis, the main control module 6 can obtain the absorption rate of light signals by blood per unit time, thereby calculating the heart rate.

[0046] S2. The signal amplification module amplifies the original PPG (photoplethysmography) signal output by the photosensitive triode. While ensuring the amplification multiple of the original PPG signal, the noise is reduced to ensure the basic characteristics of the original PPG signal. The amplified PPG signal is transmitted from the output end of the signal amplification module to the input end of the filtering module.

[0047] S3. The filtering module removes the noise of the amplified PPG signal, and then is transmitted from the output end of the filtering module to the I / O (input / output) pin of the main control module 6.

[0048] S4. The main control module 6 analyzes and processes the electrical signal, calculates the heart rate data of the current user using a pre-stored algorithm, and transmits it to the screen display module 13 for display.

[0049] S5. The acceleration sensor 11 collects the acceleration and inclination data of the daily activities of the elderly and transmits them to the main control module 6. The main control module 6 analyzes and processes the combined acceleration of the three axes and the duration signal of the inclination attitude, calculates the user's fall condition in real time, and transmits it to the screen display module 13 for display.

[0050] S6. The data interface terminal of the temperature sensor 12 is connected to the main control module 6, which can collect the temperature data of the elderly's skin, convert it into recognizable binary codes, and finally transmit it to the screen display module 13 for display.

[0051] S7. The function key 21, the up key 22, and the down key 23 are connected to the main control module 6 through the connection method of independent keys, so as to execute the control commands of corresponding selection function parameters, increasing parameter values, and decreasing parameter values, and the threshold parameters can be set.

[0052] S8. When the detected temperature data or heart rate data is higher than the threshold, or when the elderly fall, the speaker gives an alarm, and at the same time the indicator light 25 flashes to remind.

[0053] S9. The positioning module 8 is connected to the input / output interface of the main control module 6 to transmit position data and send it to the screen display module 13 for display.

[0054] S10. Through the wireless communication module 7, various data can be sent to the mobile terminal used by the family members.

[0055] After the intelligent bracelet of the present application is powered by the power module 4, various sensors start to collect corresponding information, send the collected information to the main control module 6 for processing, and finally transmit the detection results to the screen display module 13 for display, and transmit the data to the mobile terminal through the wireless communication module 7, so as to solve the health monitoring of the daily physical sign parameters such as the body temperature and heart rate of the elderly, and when the elderly fall, obtain the position of the elderly in time and rescue them, effectively ensuring the health and safety of the elderly. And it is convenient to wear and has a simple usage method, which is suitable for the elderly.

[0056] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the preferred embodiments as well as all changes and modifications falling within the scope of the present application.

[0057] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. An intelligent bracelet for the elderly, characterized in that, Including: A main body (1); A main control module (6), which is arranged inside the main body (1); A heart rate detection module (10), which is arranged on the surface of the main body (1). The heart rate detection module (10) includes an infrared light-emitting diode and a photosensitive triode. Both the infrared light-emitting diode and the photosensitive triode are electrically connected to the main control module (6). The infrared light-emitting diode emits infrared light of different wavelengths under the control of the main control module (6). The photosensitive triode receives the infrared light reflected by the wrist of the elderly, converts the infrared light into a corresponding electrical signal, and the main control module (6) analyzes the electrical signal corresponding to the infrared light of each wavelength to obtain the corresponding heart rate data, and then summarizes the multiple heart rate data according to the accuracy rate of each wavelength to obtain the final heart rate data; A wristband loop (16), which is connected to the main body (1), and the wristband loop (16) is used to wear the main body (1) on the wrist of the elderly.

2. The smart bracelet for the elderly according to claim 1, wherein The main control module (6) performs normalization processing on the multiple accuracy rates to obtain an accuracy rate weight with a value in the range of [0, 1], and then performs weighted summation on the multiple heart rate data using the accuracy rate weight to obtain the final heart rate data.

3. The smart bracelet for the elderly according to claim 1, characterized in that, The main control module (6) adjusts the wavelength of the infrared light emitted by the infrared light-emitting diode by changing the voltage applied to the infrared light-emitting diode.

4. The smart bracelet for the elderly according to claim 1, characterized in that, It further includes a circuit device (5), the circuit device (5) is arranged inside the main body (1), the main control module (6) is arranged on the circuit device (5), and an acceleration sensor (11) is also arranged on the circuit device (5). The main control module (6) is electrically connected to the acceleration sensor (11). The acceleration sensor (11) is used to collect the acceleration data of the elderly in each direction, and the main control module (6) analyzes the acceleration data to determine whether the elderly has fallen.

5. The smart bracelet for the elderly according to claim 4, characterized in that, A temperature sensor (12) is further arranged on the surface of the main body (1). The temperature sensor (12) is electrically connected to the main control module (6), and the temperature sensor (12) is used to collect the temperature data of the elderly.

6. The smart bracelet for the elderly according to claim 5, characterized in that, A screen display module (13) is further arranged on the surface of the main body (1). The screen display module (13) is electrically connected to the main control module (6), and the screen display module (13) is used to display the heart rate data, the temperature data, and the analysis result of whether the elderly has fallen.

7. The smart bracelet for the elderly according to claim 5, characterized in that, An acoustic-optic alarm module (9) is further arranged on the surface of the main body (1). The acoustic-optic alarm module (9) is electrically connected to the main control module (6). The main control module compares the heart rate data and the temperature data with the corresponding thresholds. When the heart rate data exceeds the corresponding threshold, or the temperature data exceeds the corresponding threshold, or it is determined that the elderly has fallen, the main control module (6) controls the acoustic-optic alarm module (9) to emit an acoustic-optic alarm.

8. The smart bracelet for the elderly according to claim 5, characterized in that, The circuit device (5) is further provided with a wireless communication module (7), and the wireless communication module (7) is electrically connected to the main control module (6). The wireless communication module (7) sends the heart rate data, the temperature data, and the analysis result of whether a fall occurs to the mobile terminal used by the family member through a wireless network.

9. The smart bracelet for the elderly according to claim 8, wherein, The circuit device (5) is further provided with a positioning module (8), and the positioning module (8) is electrically connected to the main control module (6). The positioning module (8) is used to collect the real-time position of the elderly, and the wireless communication module (7) sends the real-time position to the mobile terminal through a wireless network.

10. The smart bracelet for the elderly according to claim 1, characterized in that, The circuit device (5) is further provided with a signal amplification module and a filtering module. The signal amplification module and the filtering module are sequentially connected between the photosensitive triode and the main control module (6). The signal amplification module is used to amplify the electrical signal, and the filtering module is used to filter the amplified electrical signal.

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