Sports watchband and use method thereof

Abstract

The invention relates to a sports watchband and a use method thereof, a sensing area is arranged in the watchband, a sweat acquisition unit and a sweat detection unit are arranged between a leather layer and a skin touch layer of the watchband, the sweat acquisition unit and the sweat detection unit are electrically connected with a micro-control unit, and parameters are displayed and set through a display screen. Compared with the prior art, when a user does strenuous exercise, sweat can be sucked and discharged, the wrist can be cooled, meanwhile, the sucked and discharged sweat can be detected, more accurate and more reasonable suggestions and exercise prompts are provided for the user in combination with body temperature, heart rate and blood oxygen concentration detection conditions, and risks caused by excessive exercise are prevented; according to the sports watchband, by detecting, judging and disconnecting a plurality of related parameters, automatic and intelligent control over perspiration is achieved, the miniature heat pump unit is started only when the related parameters exceed normal preset threshold parameters, and therefore electric energy of the sports watchband can be saved.

Description

Technical Field

[0001] The invention belongs to the technical field of sporting goods, and in particular relates to a sports watchband and a use method thereof. Background Art

[0002] Compared with other body fluids, sweat has great advantages in measuring physiological parameters using wearable devices. Other body fluids usually include blood, urine, tears, saliva and semen, which have limitations when used for measuring physiological parameters of wearable devices. For example, blood requires venous blood sampling and requires trauma, and tears and urine are only produced / secreted when the human body is in a certain state. Sweat contains rich substances: such as electrolytes (such as sodium, potassium, chloride, ammonium, calcium), metabolites (glucose, lactic acid, urea, uric acid), trace elements (such as iron, zinc, copper), small molecules (such as cortisol, tyrosine, peptides), etc. These substances can indicate the health status of the human body at the molecular level. It can be seen that the substances in sweat are rich enough, and the health indicators detected are almost as rich as those obtained by blood tests in hospitals. Obtaining sweat for detection in a non-invasive way is an ideal choice for continuous monitoring.

[0003] In addition, it is well known that the human body will produce a lot of sweat when exercising, which will wet the strap of the smart bracelet. In addition, due to the influence of secretions such as inorganic salts, the smart bracelet and the wrist will slip, and the slip will affect the detection accuracy or detection efficiency of the smart bracelet sensor, which may cause the smart bracelet to issue an error prompt or false alarm. For example, the heart rate sensor needs to be in close contact with the pulse of the wrist to accurately measure the heart rate. Once misaligned, it may lead to inaccurate heart rate detection or even failure to detect the heart rate.

[0004] Therefore, in response to the above problems, how to efficiently remove sweat to avoid slipping between the smart bracelet and the wrist, and to extract and detect sweat, has become a technical problem that technicians in this field are eager to solve. Summary of the invention

[0005] The object of the present invention is to provide a sports watchband and a method of using the same, in order to solve the technical problems raised in the above background technology. The specific technical solutions are as follows:

[0006] A sports watchband, wherein the inner side of the watchband is a skin-touch layer, the skin-touch layer is used to directly contact human skin after the watchband is worn, a sensing area is arranged in the middle of the skin-touch layer, the outer side of the watchband is a cortex layer, a sweat acquisition unit and a sweat detection unit are arranged between the cortex layer and the skin-touch layer, a watch head is installed on the watchband, a micro-control unit is arranged in the watch head, a display screen is arranged on the watch head, the sweat acquisition unit and the sweat detection unit are electrically connected to the micro-control unit through a wire, and the micro-control unit is electrically connected to the display screen.

[0007] A temperature sensor, a heart rate sensor and a blood oxygen concentration sensor are arranged in the sensing area, wherein the temperature sensor is used to detect body temperature, the heart rate sensor is used to detect heart rate, and the blood oxygen concentration sensor is used to detect blood oxygen concentration. The temperature sensor, the heart rate sensor and the blood oxygen concentration sensor are all electrically connected to the micro-control unit through wires, and the micro-control unit controls the working state of the sweat acquisition unit according to the body temperature, heart rate and blood oxygen concentration values ​​uploaded from the sensing area and the sweat discharge amount detected by the sweat detection unit.

[0008] The strap is also provided with a battery installation port for installing a button battery, and the button battery is used to power the micro-control unit and the sweat acquisition unit.

[0009] The top of the strap is provided with sweat holes, the bottom is provided with air inlet holes, the air inlet holes are connected to the sweat acquisition unit, the air inlet holes are used for the sweat acquisition unit to inhale air, the sweat holes are connected to the sweat detection unit, the sweat detection unit is in air communication with the sweat acquisition unit, the inhaled air has a certain flow rate after being pressurized in the sweat acquisition unit, and can draw the sweat vapor out of the sweat holes.

[0010] The sweat acquisition unit at least includes a thermoelectric cooling sheet, a micro heat pump unit, and a sweat extraction unit, wherein the cortex layer is connected to the mounting plate, the mounting plate is connected to the slot plate, a sandwich plate is vertically arranged in the slot plate, the thermoelectric cooling sheet is installed between the sandwich plate and the mounting plate, and the thermoelectric cooling sheet is connected to the micro control unit through a wire. A plurality of the micro heat pump units are installed between the sandwich plate and the slot plate, and the plurality of the micro heat pump units are vertically connected in series.

[0011] The micro heat pump unit includes a partition, a porous film, a cold chamber, and a hot chamber, wherein the cold chamber is close to the thermoelectric cooling sheet, and the hot chamber is close to the skin-touch layer. The cold chamber and the hot chamber in the same layer are separated by a vertical partition or a porous film; and the cold chambers and the hot chambers in different layers are separated by a horizontal partition. The porous film has micropores of micro-nano scale, and the partition is provided with a connecting hole; the air inlet of the micro heat pump unit close to the bottom of the watchband is connected to the air inlet hole, and the air outlet of the last micro heat pump unit far from the bottom of the watchband is connected to the detection cavity of the sweat extraction unit.

[0012] The porous film is made of low thermal conductivity material to maintain the temperature gradient on both sides of the film. When there is a temperature difference between the two ends of the porous film, the gas in the cold chamber will automatically enter the hot chamber through the micropores, causing the pressure of the hot chamber to increase and the pressure of the cold chamber to decrease, thereby generating a pumping effect in a microscale state. The gas entering the hot chamber passes through the connecting hole and enters the cold chamber through thermal diffusion. In this way, the air can flow in a "snake-like" manner between the micro heat pump units, and finally the air is drawn in at a low speed from the air inlet and discharged at a higher speed from the sweat venting hole.

[0013] The sweat extraction unit is arranged on the side opposite to the micro heat pump unit, and the sweat extraction unit includes an anti-fouling layer, a capillary trifurcated tube, and a confluence chamber. The anti-fouling layer is arranged on the skin-touch layer, and the anti-fouling layer is a porous mesh structure and is made of oleophobic material. A capillary trifurcated tube is arranged on the side of the anti-fouling layer away from the skin-touch layer, and a plurality of the capillary trifurcated tubes are connected in parallel on one side of the confluence chamber, and the confluence chamber is arranged in the groove plate.

[0014] The capillary trifurcated tube has three capillary branches and a capillary trunk, the three capillary branches are connected in parallel to the capillary trunk and connected to the capillary trunk at an acute angle. The confluence cavity is connected to the detection cavity through a drainage hole arranged on the slot plate.

[0015] The sweat detection unit is arranged in the detection cavity, and the detection cavity is arranged on the upper part of the sweat extraction unit. The sweat extraction unit includes a sweat analyzer and a micro flow meter. The sweat analyzer can analyze one or more biological parameters in electrolytes, metabolites, trace elements, and small molecules. The micro flow meter is used to measure the discharge of sweat, so as to calculate the sweat rate of the user. The sweat extraction unit is connected to the micro-control unit through a wire, and the main biological parameters detected by it are visually displayed on the display screen.

[0016] The main parameters (body temperature, heart rate, blood oxygen concentration) and prompt suggestions are notified to the user through the display screen of the sports strap, or the sports strap is wirelessly connected to the user's smart terminal to inform the user of the main parameters and prompt suggestions.

[0017] Based on the sports watchband, a method for using the sports watchband is further proposed. The method includes the following steps 11 to 15:

[0018] Step 11: Set the minimum sweat rate threshold φ via the touch screen set The user wears a sports watchband, and the sensory area of ​​the skin layer monitors the body temperature T in real time. s , heart rate s , blood oxygen concentration value BH s The sweat detection unit detects the real-time sweat discharge volume in real time s ;

[0019] Step 12: The micro-control unit detects sweat discharge based on real-time s Calculate real-time sweat rate φ s , and judge φ s Whether the minimum sweat rate threshold φ is exceeded set If yes, go back to step 11, if no, go to step 13;

[0020] Step 13: Continue to determine body temperature T s , heart rate s , blood oxygen concentration value BH s Whether any two of them exceed the corresponding preset threshold body temperature T set , heart rate set , blood oxygen concentration value BH set If yes, go to step 14; if no, return to step 12;

[0021] Step 14: The micro-control unit controls the thermoelectric cooling sheet to start, and the micro heat pump unit in the sweat acquisition unit works, and after pressurizing the inhaled air, the sweat vapor absorbed by the sweat extraction unit is ejected;

[0022] Step 15: Calculate the real-time change rate R of body temperature, heart rate, and blood oxygen concentration respectively T , R P , R BH , R φ , in φ s Exceeding the minimum sweat rate threshold φ set Under the premise of T , R P , R BH , R φ Any two or three of the above are beyond the corresponding range R T,set , R P,set , R BH,set , R φ,set When the exercise intensity index M(R) is calculated, it is displayed on the display screen, and a sports status suggestion is sent;

[0023] In the above steps, M(R) = a*(R T -R T,set ) / R T,set +b*(R P -R P,set ) / R P,set +c*(R BH -R BH,set ) / R BH,set +d*(R φ -R φ,set ) / R φ,set+e, where a is the influencing factor of body temperature, b is the influencing factor of heart rate, c is the influencing factor of blood oxygen concentration, d is the influencing factor of sweat rate, and e is the influencing factor of sweat biological parameters, a+b+c+d+e=1.

[0024] In summary, compared with the prior art, the sports watchband and the method of using the same of the present invention have the following advantages:

[0025] 1) A sports watchband of the present invention provides a non-invasive detection method based on the watchband. The device can not only suck out sweat when the user is exercising vigorously to cool the wrist, but also detect the sucked sweat, and provide the user with more accurate and reasonable suggestions and exercise tips in combination with the detection of body temperature, heart rate and blood oxygen concentration, so as to prevent the risks caused by excessive exercise;

[0026] 2) The sweat detection unit of the present invention is connected to the sweat acquisition unit by an air path, and the inhaled air has a certain flow rate after the sweat is pressurized in the acquisition unit, which can guide the sweat vapor to be discharged from the sweat discharge holes, thereby not only avoiding the large amount of sweat accumulation on the wrist causing the sensor monitoring accuracy to decrease, but also can quickly obtain sweat samples for detection by the sweat detection unit;

[0027] 3) The sweat extraction unit of the present invention has a unique structure, which can not only prevent oily secretions from clogging the pores, but also has a stronger capillary force in the capillary trifurcated tube, which can quickly extract sweat from the wrist;

[0028] 4) By detecting and judging multiple related parameters, automatic and intelligent control of perspiration is achieved. The micro heat pump unit is only turned on when multiple related parameters exceed normal preset threshold parameters. Therefore, it also helps to save energy of the sports strap. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of a three-dimensional structure of a sports watchband of the present invention;

[0030] Figure 2 A vertical cross-sectional view of a sports watchband of the present invention;

[0031] Figure 3 It is a partial enlarged schematic diagram of a vertical section of a sports watchband of the present invention;

[0032] In the figure, 1- strap; 1-1- cortical layer; 1-2- mounting plate; 1-3- sandwich plate; 1-4- slot plate; 2- skin-touch layer; 3- sensing area; 4- battery installation port; 5- meter head; 6- display screen; 7- sweat holes; 8- thermoelectric cooling plate; 9-1- partition; 9-2- porous film; 9-3- cold chamber; 9-4- hot chamber; 9-5- connection hole; 10-1- anti-fouling layer; 10-2- capillary trifurcated tube; 10-3- confluence chamber; 10-4- drainage hole; 11- air inlet; 12- micro flow meter; 13- wire. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that in the specific implementation manner, directional words such as "top", "bottom", "outside", and "inside" are only used to illustrate the connection relationship between components and should not be regarded as limiting the scope of protection of the present invention.

[0035] Please check the attached Figure 1-3 A sports watchband of the present invention comprises a skin-touch layer 2 on the inner side of the watchband 1, which is used for directly contacting human skin after the watchband 1 is worn, a sensing area 3 is arranged in the middle of the skin-touch layer 2, a cortical layer 1-1 is arranged on the outer side of the watchband 1, the cortical layer 1-1 is made of a material with high reflectivity or low absorption rate, a sweat acquisition unit and a sweat detection unit are arranged between the cortical layer 1-1 and the skin-touch layer 2, a watch head 5 is installed on the watchband 1, a micro-control unit is arranged in the watch head 5, a display screen 6 is arranged on the watch head 5, the sweat acquisition unit and the sweat detection unit are electrically connected to the micro-control unit through a wire, and the micro-control unit is electrically connected to the display screen 6.

[0036] A temperature sensor, a heart rate sensor and a blood oxygen concentration sensor are arranged in the sensing area 3. The temperature sensor is used to detect the user's body temperature, the heart rate sensor is used to detect the user's heart rate, and the blood oxygen concentration sensor chip calculates the blood oxygen concentration by the difference in light intensity between the emitted red light or infrared light and the received light intensity, which is an important physiological parameter reflecting the respiratory and circulatory functions. The changes in temperature, heart rate and blood oxygen concentration can reflect the user's current exercise state. When the user sweats a lot, the body temperature will be high, the heartbeat will be faster, the heart rate will be high, and the blood oxygen concentration will drop or even be lower than 95% of the normal level. Therefore, through the detection of these three parameters, it is possible to control whether the sports strap needs to sweat. The above-mentioned temperature sensor, heart rate sensor and blood oxygen concentration sensor are all electrically connected to the micro-control unit through wires. The micro-control unit controls the working state of the sweat acquisition unit according to the body temperature, heart rate and blood oxygen concentration values ​​uploaded by the sensing area 3 and the various indicators detected by the sweat detection unit.

[0037] The strap is also provided with a battery installation port 4 for installing a button battery, and the button battery is used to power the micro-control unit and the sweat acquisition unit.

[0038] The top of the strap 1 is provided with sweat holes 7, and the bottom is provided with air inlet holes 11, which are connected to the sweat acquisition unit. The air inlet holes 11 are used for the sweat acquisition unit to inhale air. The sweat holes 7 are connected to the sweat detection unit, and the sweat detection unit is in air communication with the sweat acquisition unit. The inhaled air has a certain flow rate after being pressurized in the sweat acquisition unit, and can induce sweat vapor to be discharged from the sweat holes 7, thereby not only avoiding the accumulation of sweat in large quantities on the wrist, which causes a decrease in the monitoring accuracy of the sensor, but also can quickly obtain sweat samples for detection by the sweat detection unit.

[0039] The sweat acquisition unit at least includes a thermoelectric cooling sheet 8, a micro heat pump unit, and a sweat extraction unit. The cortical layer 1-1 is connected to the mounting plate 1-2. The mounting plate 1-2 is made of flexible material. The mounting plate 1-2 is connected to the slot plate 1-4. The interlayer plate 1-3 is vertically arranged in the slot plate 1-4. The thermoelectric cooling sheet 8 is installed between the interlayer plate 1-3 and the mounting plate 1-2. The thermoelectric cooling sheet 8 is connected to the micro control unit through a wire. Multiple micro heat pump units are installed between the interlayer plate 1-3 and the slot plate 1-4, and the multiple micro heat pump units are vertically connected in series.

[0040] The micro heat pump unit includes a partition 9-1, a porous film 9-2, a cold chamber 9-3, and a hot chamber 9-4, wherein the cold chamber 9-3 is close to the thermoelectric cooling sheet 8, and the hot chamber 9-4 is close to the skin-touch layer 2. The cold chamber 9-3 and the hot chamber 9-4 on the same layer are separated by a vertical partition 9-1 or a porous film 9-2, while the cold chambers and the hot chambers on different layers are separated by a horizontal partition 9-1. The porous film 9-2 has micropores of micro-nano scale, and the partition 9-1 is provided with a connecting hole 9-5; the air inlet of the micro heat pump unit close to the bottom of the strap 1 is connected to the air inlet 11, and the air outlet of the last micro heat pump unit away from the bottom of the strap 1 is connected to the detection cavity of the sweat extraction unit.

[0041] The micropore size (diameter) of the porous film 9-2 is distributed between 500nm and 50um, the thickness of the porous film 9-2 is less than or equal to 0.2mm, and the porous film 11-2 adopts low thermal conductivity materials, such as aerogel paper, to maintain the temperature gradient on both sides of the film. The porous film 9-2 is the core component that drives the micro heat pump unit. According to the rarefied gas dynamics theory, the flow process of the gas in the micro-nano pores can be regarded as rarefied gas. The rarefied gas has a flow and heat exchange state different from the conventional Reynolds flow. When there is a temperature difference at both ends of the porous film 9-2, the gas in the cold chamber 9-3 will automatically enter the hot chamber 9-4 through the micropores, causing the pressure in the hot chamber to increase and the pressure in the cold chamber to decrease, thereby producing a pumping effect in a microscale state. The gas entering the hot chamber 9-4 passes through the connecting hole 9-5 and undergoes thermal diffusion (from the high temperature end to the low temperature end) to enter the cold cavity. This reciprocating process allows the air to flow in a "snake-like" shape between the micro heat pump units, ultimately allowing the air to be drawn in at a low speed from the air inlet 11 and discharged at a higher speed from the sweat venting hole 7.

[0042] In addition, for the flow of rarefied gas under the temperature difference effect, the greater the temperature gradient (the greater the temperature difference), the stronger the flow effect and the greater the flow rate. Therefore, when the human body dissipates more heat or exercises more vigorously, the body temperature rises, which in turn causes the temperature of the hot end to rise. The greater the rarefied gas flow rate and the higher the flow rate, the faster the sweat is discharged.

[0043] The sweat extraction unit is arranged on the side opposite to the micro heat pump unit, and the sweat extraction unit includes an anti-fouling layer 10-1, a capillary trifurcated tube 10-2, and a confluence chamber 10-3. The anti-fouling layer 10-1 is arranged on the skin-touch layer 2. The anti-fouling layer 10-1 is a porous mesh structure, and uses oleophobic materials such as polytetrafluoroethylene to prevent oily secretions from clogging the pores. A capillary trifurcated tube 10-2 is arranged on the side of the anti-fouling layer 10-1 away from the skin-touch layer 2, and multiple capillary trifurcated tubes 10-2 are connected in parallel on one side of the confluence chamber 10-3, and the confluence chamber 10-3 is arranged in the groove plate 1-4. The capillary trifurcated tube 10-2 has three capillary branches and a capillary trunk, the three capillary branches are connected in parallel to the capillary trunk and connected to the capillary trunk at an acute angle, the three capillary branches absorb sweat beads or sweat vapor through capillary force, and form a capillary force at the capillary trunk, thereby increasing the capillary force, so that the sweat beads or sweat vapor can quickly escape from the wall surface of the capillary branch and enter the confluence cavity 10-3. The confluence cavity 10-3 is connected to the detection cavity through the drainage hole 10-4 set on the slot plate 1-4.

[0044] The sweat detection unit is arranged in the detection cavity, and the detection cavity is arranged on the upper part of the sweat extraction unit. The sweat extraction unit includes a sweat analyzer and a micro flow meter 12. The sweat analyzer can analyze one or more biological parameters in electrolytes (such as sodium, potassium, chloride, ammonium, calcium), metabolites (glucose, lactic acid, urea, uric acid), trace elements (such as iron, zinc, copper), and small molecules (such as cortisol, tyrosine, polypeptides). The micro flow meter 12 is used to measure the amount of sweat discharged, thereby calculating the user's sweat rate. The sweat extraction unit is connected to the micro-control unit through a wire 13, and the main biological parameters detected by it are visually displayed on the display screen 6.

[0045] In the sports watchband of the present embodiment, when the user exercises less, or any two of the values ​​of body temperature, heart rate, and blood oxygen concentration do not exceed the corresponding preset thresholds, the user sweats less, mainly in the form of sweat vapor. The sweat vapor is absorbed into the detection cavity by the sweat extraction unit, and the sweat detection unit can perform real-time detection. At the same time, due to the small amount of sweat, it can automatically escape to the outside of the sports watchband through the sweat holes 7. At this time, natural sweating can be achieved without turning on the thermoelectric cooling sheet 8, and there is no need to worry about the sports watchband slipping between the wrist. When the user exercises, When the momentum is large, or any two of the body temperature, heart rate, blood oxygen concentration values ​​exceed the corresponding preset thresholds, it indicates that the user is sweating a lot, mainly in the form of sweat beads or sweat vapor (for people who do not sweat easily or sweat less). A large amount of sweat beads or sweat vapor accumulates in the confluence chamber 10-3, which is difficult to be absorbed into the detection cavity through the sweat extraction unit within a period of time. At this time, the micro-control unit controls the thermoelectric cooling sheet 8 to turn on, and the micro heat pump unit works, and by making the air flow, the large amount of sweat beads or sweat vapor accumulated in the confluence chamber 10-3 is ejected, thereby achieving the effect of active drainage and sweat discharge.

[0046] In addition, the micro flow meter 12 is mainly used to detect the amount of sweat discharged, and then measure the sweat rate of the human body, identify and compensate for the influence of the sweat rate, and at the same time, combined with the parameters detected by the sweat analyzer, body temperature, heart rate and blood oxygen concentration, it can comprehensively and accurately evaluate the physiological state of the user during exercise. The main parameters and prompts are notified to the user through the display screen 6 of the sports strap, or the sports strap is connected to the user's smart terminal (such as a mobile phone) through a wireless network such as WI-FI, Bluetooth or Zigbee, and then the main parameters and prompts are notified to the user, so that the user can adjust the exercise state and avoid health risks caused by strenuous exercise.

[0047] Furthermore, based on the above-mentioned sports watchband, this embodiment also proposes a method for using the sports watchband, which includes the following steps 11 to 15:

[0048] Step 11: Set the minimum sweat rate threshold φ via the touch screen set , the user wears the sports watchband, and the sensing area 3 of the skin-touch layer 2 monitors the body temperature T in real time s , heart rate s , blood oxygen concentration value BH s The sweat detection unit detects the real-time sweat discharge volume in real time s ;

[0049] Step 12: The micro-control unit detects sweat discharge based on real-time s Calculate real-time sweat rate φ s , and judge φ s Whether the minimum sweat rate threshold φ is exceeded set If yes, go back to step 11, if no, go to step 13;

[0050] Step 13: Continue to determine body temperature T s , heart rate s , blood oxygen concentration value BH s Whether any two of them exceed the corresponding preset threshold body temperature T set , heart rate set , blood oxygen concentration value BH set If yes, go to step 14; if no, return to step 12;

[0051] Step 14: The micro-control unit controls the thermoelectric cooling sheet 8 to turn on, and the micro heat pump unit in the sweat acquisition unit works, and after pressurizing the inhaled air, the sweat vapor absorbed by the sweat extraction unit is ejected;

[0052] Step 15: Calculate the real-time change rate R of body temperature, heart rate, and blood oxygen concentration respectively T , R P , R BH , Rφ , in φ s Exceeding the minimum sweat rate threshold φ set Under the premise of T , R P , R BH , R φ Any two or three of the above are beyond the corresponding range R T,set , R P,set , R BH,set , R φ,set When the exercise intensity index M(R) is calculated, it is displayed on the display screen 6, and the exercise status suggestion prompt is sent at the same time.

[0053] In the above steps, M(R) = a*(R T -R T,set ) / R T,set +b*(R P -R P,set ) / R P,set +c*(R BH -R BH,set ) / R BH,set +d*(R φ -R φ,set ) / R φ,set +e, wherein a is the body temperature influencing factor, b is the heart rate influencing factor, c is the blood oxygen concentration influencing factor, d is the sweat rate influencing factor, and e is the sweat biological parameter influencing factor, a+b+c+d+e=1, a, b, c, d, e can be set according to a large number of experimental results, and are set in the micro-control unit memory before the sports strap leaves the factory, so that the micro-control unit can call the calculation when implementing the above method.

[0054] It should be noted that the specific embodiments of the present invention only describe in detail some representative embodiments in the specification of the present invention. For those skilled in the art, various obvious changes thereto are within the protection scope of the present invention without violating the original spirit and protection scope of the present invention.

Claims

1. A sports watchband, characterized in that: The inner side of the watch strap is a skin-touch layer, which is used to directly contact human skin after the watch strap is worn. A sensing area is arranged in the middle of the skin-touch layer. The outer side of the watch strap is a cortex layer. A sweat acquisition unit and a sweat detection unit are arranged between the cortex layer and the skin-touch layer. A watch head is installed on the watch strap, a micro-control unit is arranged in the watch head, and a display screen is arranged on the watch head. The sweat acquisition unit and the sweat detection unit are electrically connected to the micro-control unit through wires, and the micro-control unit is electrically connected to the display screen.

2. A sports watchband according to claim 1, characterized in that: A temperature sensor, a heart rate sensor and a blood oxygen concentration sensor are arranged in the sensing area, wherein the temperature sensor is used to detect body temperature, the heart rate sensor is used to detect heart rate, and the blood oxygen concentration sensor is used to detect blood oxygen concentration. The temperature sensor, the heart rate sensor and the blood oxygen concentration sensor are all electrically connected to the micro-control unit through wires, and the micro-control unit controls the working state of the sweat acquisition unit according to the body temperature, heart rate and blood oxygen concentration values ​​uploaded from the sensing area and the sweat discharge amount detected by the sweat detection unit.

3. A sports watchband according to claim 1, characterized in that: The strap is also provided with a battery installation port for installing a button battery, and the button battery is used to power the micro-control unit and the sweat acquisition unit.

4. A sports watchband according to claim 1, characterized in that: The top of the strap is provided with sweat holes, the bottom is provided with air inlet holes, the air inlet holes are connected to the sweat acquisition unit, the air inlet holes are used for the sweat acquisition unit to inhale air, the sweat holes are connected to the sweat detection unit, and the sweat detection unit is in air communication with the sweat acquisition unit.

5. A sports watchband according to claim 1, characterized in that: The sweat acquisition unit at least includes a thermoelectric cooling sheet, a micro heat pump unit, and a sweat extraction unit, wherein the cortical layer is connected to the mounting plate, the mounting plate is connected to the slot plate, a sandwich plate is vertically arranged in the slot plate, the thermoelectric cooling sheet is installed between the sandwich plate and the mounting plate, and the thermoelectric cooling sheet is connected to the micro-control unit through a wire; a plurality of the micro heat pump units are installed between the sandwich plate and the slot plate, and the plurality of the micro heat pump units are vertically connected in series.

6. A sports watchband according to claim 5, characterized in that: The micro heat pump unit includes a partition, a porous film, a cold chamber, and a hot chamber, wherein the cold chamber is close to the thermoelectric cooling sheet, and the hot chamber is close to the skin-touch layer. The cold chamber and the hot chamber in the same layer are separated by a vertical partition or a porous film; and the cold chambers and the hot chambers in different layers are separated by a horizontal partition. The porous film has micropores of micro-nano scale, and the partition is provided with a connecting hole; the air inlet of the micro heat pump unit close to the bottom of the watchband is connected to the air inlet hole, and the air outlet of the last micro heat pump unit far from the bottom of the watchband is connected to the detection cavity of the sweat extraction unit.

7. A sports watchband according to claim 5, characterized in that: The sweat extraction unit is arranged on the side opposite to the micro heat pump unit, and the sweat extraction unit includes an anti-fouling layer, a capillary trifurcated tube, and a confluence chamber. The anti-fouling layer is arranged on the skin-touch layer, and the anti-fouling layer is a porous mesh structure and is made of oleophobic material. A capillary trifurcated tube is arranged on the side of the anti-fouling layer away from the skin-touch layer, and a plurality of the capillary trifurcated tubes are connected in parallel on one side of the confluence chamber, and the confluence chamber is arranged in the groove plate.

8. A sports watchband according to claim 5, characterized in that: The capillary trifurcated tube has three capillary branches and a capillary trunk. The three capillary branches are connected in parallel to the capillary trunk and connected to the capillary trunk at an acute angle. The confluence cavity is connected to the detection cavity through a drainage hole arranged on the slot plate.

9. A sports watchband according to claim 1, characterized in that: The sweat detection unit is arranged in the detection cavity, and the detection cavity is arranged on the upper part of the sweat extraction unit. The sweat extraction unit includes a sweat analyzer and a micro flow meter. The sweat analyzer can analyze one or more biological parameters in electrolytes, metabolites, trace elements, and small molecules. The micro flow meter is used to measure the discharge of sweat, so as to calculate the sweat rate of the user. The sweat extraction unit is connected to the micro-control unit through a wire, and the main biological parameters detected by it are visually displayed on the display screen.

10. A method for using a sports watchband, based on the sports watchband according to any one of claims 1 to 5 and 9, characterized in that: The method of use comprises the following steps 11 to 15: Step 11: Set the minimum sweat rate threshold φ via the touch screen set The user wears a sports watchband, and the sensory area of ​​the skin layer monitors the body temperature T in real time. s , heart rate s , blood oxygen concentration value BH s The sweat detection unit detects the real-time sweat discharge volume in real time s ; Step 12: The micro-control unit detects sweat discharge based on real-time s Calculate real-time sweat rate φ s , and judge φ s Whether the minimum sweat rate threshold φ is exceeded set If yes, go back to step 11, if no, go to step 13; Step 13: Continue to determine body temperature T s , heart rate s , blood oxygen concentration value BH s Whether any two of them exceed the corresponding preset threshold body temperature T set , heart rate set , blood oxygen concentration value BH set If yes, go to step 14; if no, return to step 12; Step 14: The micro-control unit controls the thermoelectric cooling sheet to start, and the micro heat pump unit in the sweat acquisition unit works, and after pressurizing the inhaled air, the sweat vapor absorbed by the sweat extraction unit is ejected; Step 15: Calculate the real-time change rate R of body temperature, heart rate, and blood oxygen concentration respectively T , R P , R BH , R φ , in φ s Exceeding the minimum sweat rate threshold φ set Under the premise of T , R P , R BH , R φ Any two or three of the above are beyond the corresponding range R T,set , R P,set , R BH,set , R φ,set When the exercise intensity index M(R) is calculated, it is displayed on the display screen, and a sports status suggestion is sent; In step 15, M(R)=a*(R T -R T,set ) / R T,set +b*(R P -R P,set ) / R P,set +c*(R BH -R BH,set ) / R BH,set +d*(R φ -R φ,set ) / R φ,set +e, where a is the influencing factor of body temperature, b is the influencing factor of heart rate, c is the influencing factor of blood oxygen concentration, d is the influencing factor of sweat rate, and e is the influencing factor of sweat biological parameters, a+b+c+d+e=1.

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