CN105496388A

CN105496388A - Pulse monitoring device

Info

Publication number: CN105496388A
Application number: CN201410502746.2A
Authority: CN
Inventors: 付晓玥; 冯顺; 王珊; 赵豪
Original assignee: Nano New Energy Tangshan Co Ltd
Current assignee: Nano New Energy Tangshan Co Ltd
Priority date: 2014-09-26
Filing date: 2014-09-26
Publication date: 2016-04-20

Abstract

The invention discloses a pulse monitoring device, for solving the problem that the pulse monitoring devices in the prior part generally have the defects that the massaging function is not available, the technology is complicated, the manufacturing cost is high, and the devices are heavy, not portable, but low in accuracy rate. The pulse monitoring device provided by the invention comprises a flexible wrist strap and a flexible pulse sensor arranged on the flexible wrist strap, wherein the flexible wrist strap is annularly arranged at the to-be-detected pulse position, the flexible pulse sensor adopts at least one friction generator capable of sensing the to-be-detected pulse beat, and the inner surface of the area, provided with the flexible pulse sensor, of the flexible wrist strap is further provided with at least one raised structure.

Description

Pulse monitoring device

Technical Field

The invention relates to the technical field of medical monitoring equipment, in particular to a pulse monitoring device.

Background

With the increasing living standard, people are increasingly aware of the importance of health, and therefore, more and more users (such as the elderly and people with poor heart function) are eager to perform long-term effective medical monitoring, and for some people with heart diseases for a long time or old people lying in bed for a long time, some important vital signs (such as pulse) of the people need to be monitored in real time, so that the people can be rescued in time when an emergency occurs.

Therefore, the pulse monitoring device is produced. However, the existing pulse monitoring equipment is usually realized by adopting a pressure sensor made of a pressure-sensitive element, and has the defects of complex process, high manufacturing cost, heavy equipment, portability, low accuracy and the like. Moreover, the existing pulse monitoring equipment does not have a massage function, so that the comfort level of a user is poor.

Disclosure of Invention

The invention provides a pulse monitoring device, which is used for solving the problems of various defects of no massage function, complex process, high manufacturing cost, heavy equipment, portability, low accuracy and the like of pulse monitoring equipment in the prior art.

A pulse monitoring device, comprising: flexible wrist strap and set up in flexible pulse sensor on the flexible wrist strap, wherein, flexible wrist strap ring is established in the pulse department of awaiting measuring, flexible pulse sensor is at least one friction generator that can the sensing pulse of awaiting measuring beats, and, be provided with on the flexible wrist strap further be provided with at least one protruding structure on the regional internal surface of flexible pulse sensor.

Optionally, the protruding structures are dot-shaped protruding structures and/or stripe-shaped protruding structures.

Optionally, the shape of the point-like convex structure is cylindrical, conical, prismatic or pyramid-like; the cross section of the strip-shaped convex structure is semicircular, triangular or rectangular.

Optionally, the arrangement direction of the strip-shaped protruding structures is consistent with the direction of the pulse to be detected.

Optionally, the height of each protruding structure is 0.5-5 mm, and the edge distance between adjacent protruding structures is 1-20 mm.

Optionally, the flexible wristband is made of elastic rubber or elastic fabric, and the protruding structure is made of elastic rubber.

Optionally, the flexible wristband further comprises an outer layer wristband and an inner layer wristband which are stacked, the flexible pulse sensor is arranged between the outer layer wristband and the inner layer wristband, and the protruding structure is arranged on the inner layer wristband.

Optionally, the friction generator is a three-layer structure, a four-layer structure or a five-layer structure, the friction generator at least comprises two opposite surfaces forming a friction interface, and the friction generator has at least two output ends.

Optionally, at least one of the two opposite surfaces forming the friction interface is provided with a micro-nano structure.

Optionally, the flexible pulse sensor is a whole friction generator covering the whole area or a local area of the flexible wrist strap; or the flexible pulse sensor is a plurality of friction generators which are uniformly distributed in the whole area or the local area of the flexible wrist strap and are arranged in an array mode.

Optionally, further comprising: and the display device is connected with the output end of the flexible pulse sensor and is used for displaying the monitoring result of the flexible pulse sensor.

In the pulse monitoring device provided by the invention, firstly, the wrist strap and the pulse sensor are flexible, and the wrist strap is further provided with the bulge structure capable of playing a massage role, so that a user can play a massage effect while monitoring the pulse by using the pulse monitoring device, and the comfort level of the user is improved. Secondly, in the invention, the friction generator is used as a flexible pulse sensor, so that mechanical energy generated during pulse beating is converted into electric energy, the purpose of pulse monitoring is realized by analyzing an electric signal of the friction generator, the self power supply of the sensor is realized, and the invention has the advantages of simple process, low cost, portability and the like. Moreover, because pulse beat often only relates to specific points of skin, the electric signal generated at the specific points can be further amplified to the whole surface (namely the whole surface of the friction generator) through the convex structure arranged on the wrist strap, so that the intensity of the electric signal collected by the pulse monitoring device can be effectively enhanced, and the accuracy of the monitoring result and the sensitivity of the equipment are improved.

Drawings

Fig. 1 is a schematic structural diagram of a pulse monitoring device according to an embodiment of the present invention;

FIG. 2a shows a hemispherical convex structure;

FIG. 2b shows a projection configuration having a semi-circular cross-section;

FIG. 2c shows a single-type protrusion structure having a plurality of cylindrical protrusions;

FIG. 2d shows a single type of lobe structure having a plurality of spherical lobes;

FIG. 2e shows a composite bump structure having both cylindrical and spherical bumps;

fig. 3 shows a schematic structural view of a triboelectric generator with a three-layer structure;

FIG. 4a is a schematic diagram showing the force applied to a sensor without a raised structure;

FIG. 4b is a schematic diagram showing the force applied to the sensor with the raised structure;

FIG. 5a shows the waveform of an electrical signal monitored by a pulse monitoring device without raised structures; and

fig. 5b shows the waveform of the electrical signal monitored by the pulse monitoring device provided with a raised structure.

Detailed Description

The present invention will be described in detail with reference to the following embodiments in order to fully understand the objects, features and effects of the invention, but the present invention is not limited thereto.

Fig. 1 is a schematic structural diagram of a pulse monitoring device according to an embodiment of the present invention. As shown in fig. 1, the pulse monitoring device includes: a flexible wrist strap 10 and a flexible pulse sensor 20 disposed on the flexible wrist strap 10. Wherein, flexible wrist strap 10 ring is established in the pulse department that awaits measuring, and flexible pulse sensor is at least one friction generator that can the sensing pulse that awaits measuring is beated to, be provided with at least one protruding structure 30 on the regional internal surface of flexible wrist strap on the flexible pulse sensor. The inner surface as referred to herein means the surface of the flexible wristband that contacts the skin.

Specifically, the flexible wrist strap 10 is generally placed around, snugly around, the wrist, arm, ankle or other pulse beating part of the person to be monitored. For wearing convenience, the end of the flexible wrist band 10 may be provided with a hook and loop fastener or a snap fastener to adjust the degree of tightness. In order to improve the wearing comfort, the flexible wrist band 10 is usually made of a flexible material, such as elastic rubber or elastic fabric.

When the flexible wrist band 10 is made of elastic rubber, a groove may be provided on a side surface of the flexible wrist band 10 contacting the skin so that a friction generator as a flexible pulse sensor is embedded in the groove. Since the flexible wrist strap 10 is usually bent into a ring shape by means of a hook and loop fastener or a snap fastener at the end, when the flexible wrist strap is in a ring shape, the groove may be a ring-shaped groove extending over almost the entire area of the flexible wrist strap, or may be a groove in the shape of a rectangular groove, a circular groove, or the like, which is only provided in a partial area of the flexible wrist strap, and the specific shape may be set in combination with the shape of the friction generator. In addition, the friction generator embedded in the groove can be a whole friction generator covering almost the whole area or the local area of the flexible wrist strap, or a plurality of friction generators which are uniformly distributed in almost the whole area or the local area of the flexible wrist strap and are arranged in an array mode, and the plurality of friction generators can be connected in parallel or in series. Moreover, a convex structure 30 is further arranged on the inner surface (namely the surface contacted with the skin) of the area where the groove is positioned, and the convex structure 30 can be directly arranged on the friction generator; the flexible wristband 10 may be connected to it by a connecting element, which may be made of rubber or fabric, as long as the raised structure 30 is secured in the area of the flexible wristband where the friction generator is located. The protruding structure 30 may be made of a material having a certain hardness, such as rubber, and having both a supporting function and a ventilation effect.

In addition, when the flexible wrist band 10 is made of elastic fabric, the flexible wrist band may be made as a double-layer structure so as to provide a friction generator, for example, the flexible wrist band 10 further includes an outer layer wrist band and an inner layer wrist band which are stacked, and the flexible pulse sensor is disposed between the outer layer wrist band and the inner layer wrist band. Specifically, the flexible wrist strap 10 may be made as a double-layer structure, and in this case, the friction generator may be distributed over the entire area of the flexible wrist strap; alternatively, only a partial region of the flexible wristband may be formed as a double-layer structure, and in this case, the friction generator may be provided only in the partial region corresponding to the double-layer structure. Whether the friction generator covers the whole area or the local area of the flexible wrist strap, the friction generator can be used as a whole friction generator or a plurality of friction generators arranged in an array. In addition, the raised structure is disposed in the area corresponding to the double-layer structure (i.e., the area where the friction generator is disposed), and specifically, the raised structure may be disposed on the surface of the inner wristband that contacts the skin.

The convex structure mainly has the following functions: firstly, the convex structure is in direct contact with the skin of a person to be monitored, so that the convex structure can be used as massage particles to play a role in massage during monitoring, the blood circulation of the person to be monitored is improved, and the comfort degree is improved. Secondly, the bulge structure is in direct or indirect contact with the friction generator, so that the local pulse beating condition at a specific point of a human body can be amplified to the whole surface of the friction generator, the intensity of a monitoring signal can be enhanced, and the sensitivity of equipment can be improved.

Specifically, the projection structure may be implemented in various ways as long as the above-described function can be achieved. For example, the protruding structures may be dot-shaped protruding structures and/or stripe-shaped protruding structures. Wherein, the shape of the point-shaped convex structure can be various shapes such as a cylinder, a cone, a sphere, a prism, a pyramid and the like; the cross section of the strip-shaped convex structure can be in various shapes such as a semicircle, a triangle, a rectangle and the like. In addition, the convex structures may be convex structures with a single shape, for example, convex structures which are all cylindrical or all prismatic; alternatively, the protruding structure may be a compound-shaped protruding structure, for example, the protruding structure includes both a dot-shaped protruding structure and a stripe-shaped protruding structure, and when the protruding structure includes a dot-shaped protruding structure, the protruding structure may also include dot-shaped protruding structures of various shapes. Fig. 2a shows a hemispherical protrusion structure, fig. 2b shows a protrusion structure having a semicircular cross section, fig. 2c shows a single type protrusion structure having a plurality of cylindrical protrusions, fig. 2d shows a single type protrusion structure having a plurality of spherical protrusions, and fig. 2e shows a composite type protrusion structure having both a plurality of cylindrical and spherical protrusions.

The number, the shape and the size of the bulges contained in the bulge structure can be freely adjusted according to the size of the friction generator, and in addition, the influence of comfort level is also considered when the height of the bulge is determined, so the bulge is not too high, the condition that the whole wrist strap is too thick is prevented, and meanwhile, the height of the bulge structure is not too low to ensure the signal intensity of a sensor; the density of the protruding structures is too low, the protruding structures can not be correctly contacted with the pulse beating position, the protruding structures are too high, the signal enhancement effect of the sensor can be weakened, the height of each protruding structure is 0.5-5 mm, and the edge distance between every two adjacent protruding structures is 1-20 mm. On the basis of ensuring the comfort level, beautification in aspects such as appearance, color and the like can be properly carried out. In addition, the arrangement direction of the protruding structures can be freely arranged and can be consistent with the extending direction of the blood vessels of the pulse to be detected, so that the monitoring effect is further improved, and especially for the strip-shaped protruding structures, the strip-shaped protruding structures can be arranged along the extending direction of the blood vessels.

The following describes in detail a specific implementation of the friction generator as a pulse sensor according to the present invention.

In one embodiment of the present invention, a triboelectric generator having a three-layer structure as shown in fig. 3 may be employed. As shown in fig. 3, the friction generator includes: a first electrode layer 1001, a first polymer insulating layer 1002, and a second electrode layer 1003 are stacked in this order. The second electrode layer 1003 and the first electrode layer 1001 form two output terminals of the friction generator. The first high molecular polymer insulating layer 1002 and the second electrode layer 1003 constitute two opposite faces of a frictional interface. Preferably, in order to further improve the power generation efficiency of the friction power generator, a micro-nano structure 1000 is disposed on at least one of two surfaces of the first high molecular polymer insulating layer 1002 and the second electrode layer 1003, which are oppositely disposed.

According to an embodiment of the present invention, the first polymer insulating layer 1002 is selected from a polyimide film, an aniline formaldehyde resin film, a polyoxymethylene film, an ethyl cellulose film, a polyamide film, a melamine formaldehyde film, a polyethylene glycol succinate film, a cellulose acetate film, a polyethylene adipate film, a polydiallyl phthalate film, a regenerated sponge film, a cellulose sponge film, a polyurethane elastomer film, a styrene-propylene copolymer film, a styrene-butadiene copolymer film, a rayon film, a polymethyl methacrylate film, a polyvinyl alcohol film, a polyester film, a polyisobutylene film, a polyurethane flexible sponge film, a polyethylene terephthalate film, a polyvinyl butyral film, a formaldehyde phenol film, a polyvinyl acetate film, a polyethylene terephthalate film, a regenerated sponge film, a cellulose sponge film, a polyurethane flexible sponge film, a polyethylene terephthalate film, a polyvinyl butyral film, a formaldehyde phenol film, a polyvinyl acetate film, A chloroprene rubber film, a butadiene-propylene copolymer film, a natural rubber film, a polyacrylonitrile film, an acrylonitrile-vinyl chloride film and a polyethylene propylene carbonate film.

According to one embodiment of the present invention, the material used for the first electrode layer 1001 is indium tin oxide, graphene, silver nanowire film, metal or alloy; wherein the metal is gold, silver, platinum, palladium, aluminum, nickel, copper, titanium, chromium, tin, iron, manganese, molybdenum, tungsten or vanadium; the alloy is an aluminum alloy, a titanium alloy, a magnesium alloy, a beryllium alloy, a copper alloy, a zinc alloy, a manganese alloy, a nickel alloy, a lead alloy, a tin alloy, a cadmium alloy, a bismuth alloy, an indium alloy, a gallium alloy, a tungsten alloy, a molybdenum alloy, a niobium alloy, or a tantalum alloy.

According to an embodiment of the present invention, the material used for the second electrode layer 1003 is the same as the metal or alloy material used for the first electrode layer 1001.

The following describes in detail the working principle of the friction generator as a sensor as shown in fig. 3: when the pulse beats, the layers of the friction generator are pressed by the pulse beating, and the second electrode layer 1003 and the surface of the first high polymer insulating layer 1002 in the friction generator rub against each other to generate static charges, so that a potential difference occurs between the first electrode layer 1001 and the second electrode layer 1003. Due to the potential difference between the first electrode layer 1001 and the second electrode layer 1003, free electrons will flow from the side with low potential to the side with high potential through an external circuit, thereby forming a current in the external circuit. When the pulse jumps down, the layers of the friction generator return to the original state, at this time, the internal potential formed between the first electrode layer 1001 and the second electrode layer 1003 disappears, at this time, a reverse potential difference is generated again between the balanced first electrode layer 1001 and the second electrode layer 1003, and then the free electrons form a reverse current through an external circuit. Therefore, an alternating current signal can be formed in the external circuit. The frequency of the alternating current signal reflects the pulse beating speed, the amplitude of the alternating current signal reflects the pulse beating strength, and in a word, the pulse beating condition of a person to be monitored can be judged by monitoring the change condition of the alternating current signal.

In one embodiment of the present invention, a friction generator with a four-layer structure may be used, which is different from the friction generator in fig. 3 in that a second polymer insulating layer is added to two opposite surfaces (i.e., between the first polymer insulating layer 1002 and the second electrode layer 1003) forming a friction interface, and the first polymer insulating layer and the second polymer insulating layer rub against each other, so that charges are induced on the first electrode layer and the second electrode layer. Other triboelectric generators with three-layer structure as shown in fig. 3 can be referred to, and those skilled in the art can easily understand the structure, material and operation principle, and will not be described herein.

In an embodiment of the present invention, a friction generator having a five-layer structure may be adopted, and referring to the friction generator having a three-layer structure shown in fig. 3, a person skilled in the art may easily understand the structure, materials and operation principle thereof, and details thereof are not described herein. For example, in a friction generator having a four-layer structure, an intermediate thin film layer may be further added between the first polymer insulating layer and the second polymer insulating layer, and charges may be induced on the first electrode layer and the second electrode layer by friction between the intermediate thin film layer and the first polymer insulating layer and/or the second polymer insulating layer.

In an embodiment of the present invention, a triboelectric generator with an intermediate electrode structure may be adopted, and referring to the triboelectric generator with a three-layer structure shown in fig. 3, a person skilled in the art can easily understand the structure, materials and working principle thereof, and details are not described herein. For example, in addition to a friction generator having a four-layer structure, an intermediate electrode layer may be further added between the first polymer insulating layer and the second polymer insulating layer, and the intermediate electrode layer may rub against the first polymer insulating layer and/or the second polymer insulating layer, in which case, the first electrode layer and the second electrode layer together constitute one output electrode of the friction generator, and the intermediate electrode layer constitutes the other output electrode of the friction generator.

The friction generator of above-mentioned several kinds of structures all adopts flexible material preparation to carry out the bending along with the crooked degree of flexible wrist strap, thereby laminate mutually with the position of waiting to monitor.

In addition, in the invention, in order to facilitate observation of the monitoring result of the flexible pulse sensor, the pulse monitoring device can further comprise a display device connected with the output end of the flexible pulse sensor and used for displaying the monitoring result of the flexible pulse sensor. Specifically, the display device includes a central processing unit and a display screen. The central processing unit is electrically connected with the pulse sensor and is used for processing the electric signals generated by the pulse sensor. The display screen is used for displaying the related information such as the pulse beating times, time, waveform and the like according to the needs. The display screen can be an LCD display screen, an OLED display screen, but is not limited thereto, and the specific type thereof can be selected according to design requirements of those skilled in the art.

The following describes the specific structure of the cpu. The central processing unit further comprises: signal acquisition circuit, signal analysis circuit, display circuit, control button and power supply circuit. The input end of the signal acquisition circuit is connected with the output end of the pulse sensor and is used for acquiring the electric signal generated by the pulse sensor. The input end of the signal analysis circuit is connected with the output end of the signal acquisition circuit and is used for calculating, processing and analyzing the electric signal output by the signal acquisition circuit. For example, the signal analysis circuit may calculate a pulse period or frequency, record and process the pulse beat intensity, extract a pulse signal waveform, compare the actually monitored pulse signal waveform with a normal pulse signal, and analyze whether there is a pulse abnormality. The signal analysis circuit may be implemented by various hardware chips, singlechips, or circuits known to those skilled in the art. The input end of the display circuit is connected with the output end of the signal analysis circuit, and the output end of the display circuit is connected with the display screen. The display circuit is used for transmitting the electric signal output by the signal analysis circuit to the display screen for displaying after image display processing. The output end of the control button is connected with the input end of the signal analysis circuit and used for inputting a control electric signal to the signal analysis circuit. The output end of the power supply circuit is respectively connected with the power supply input ends of the signal acquisition circuit, the signal analysis circuit, the display circuit and the control button and used for providing electric energy for the circuits.

Optionally, the signal acquisition circuit may specifically include: the circuit comprises a filter circuit, an amplifying circuit and an analog-digital conversion circuit. The input end of the filter circuit is connected with the output end of the pulse sensor and used for filtering interference signals in the electric signals generated by the pulse sensor. The input end of the amplifying circuit is connected with the output end of the filter circuit and is used for amplifying the electric signal output by the filter circuit; the input end of the analog-to-digital conversion circuit is connected with the output end of the amplifying circuit and is used for converting the analog electric signal output by the amplifying circuit into a digital electric signal suitable for being processed by the signal analyzing circuit. The above-mentioned circuit can be selected according to the design requirements of those skilled in the art, and is not limited thereto.

In summary, the pulse monitoring device provided by the invention at least has the following advantages:

firstly, wrist strap and pulse sensor are all flexible, and further be provided with the protruding structure that can play the massage effect on the wrist strap, consequently, the user can also play the massage effect when using this pulse monitoring device to carry out the pulse monitoring, therefore improved user's comfort level.

Secondly, in the invention, the friction generator is used as a flexible pulse sensor, so that mechanical energy generated during pulse beating is converted into electric energy, the purpose of pulse monitoring is realized by analyzing an electric signal of the friction generator, the self power supply of the sensor is realized, and the invention has the advantages of simple process, low cost, portability and the like.

Moreover, because pulse beat often only relates to specific points of skin, the electric signal generated at the specific points can be further amplified to the whole surface (namely the whole surface of the friction generator) through the convex structure arranged on the wrist strap, so that the intensity of the electric signal collected by the pulse monitoring device can be effectively enhanced, and the accuracy of the monitoring result and the sensitivity of the equipment are improved.

Principle analysis and experimental verification are carried out on the function of the convex structure on the aspects of improving the accuracy and the sensitivity of the monitoring result as follows:

firstly, a scientific principle that the convex structure can improve the accuracy and the sensitivity of a monitoring result is introduced:

known through the theory of operation when the friction electric generator that introduces above as the sensor, can take place small deformation when the friction electric generator receives the exogenic action to impel two friction interface looks mutual frictions, and produce the signal of telecommunication through the electricity principle that the friction generates electricity on two output, just can know the condition of beating of the pulse that awaits measuring through monitoring this signal of telecommunication. Therefore, the degree of deformation of the friction generator when the friction generator is subjected to an external force determines the magnitude of the friction force, and further determines the sensitivity of a sensor manufactured by the friction generator: when two friction generators are simultaneously subjected to the same external force, the greater the deformation degree of each friction generator, the greater the friction force generated by each friction generator, and therefore the greater the intensity of the generated electric signal, and therefore the higher the sensitivity. The stress conditions of a common sensor made of the friction generator without the protruding structure and a sensor made of the friction generator with the protruding structure are analyzed as follows:

both the ordinary sensor and the sensor with the raised structure are subjected to the double effects of pulse force from the inner side of the skin and wrist strap binding force from the outer side of the skin during operation. Assuming that the resultant force generated by the pulse acting force and the wrist strap binding force on the common sensor is F1, and the resultant force generated by the sensor provided with the convex structure is F2, under the same conditions (i.e., the same pulse beating condition and the same degree of wrist strap binding), F1 is approximately equal to F2. The force areas of the two sensors are analyzed as follows: the force-receiving area of the normal sensor (which may also be understood as the effective acting area of the pulse) is the entire surface area of the entire sensor (S1), while the force-receiving area of the sensor provided with the protrusion structure is only the area corresponding to the protrusion structure (S2). Obviously, S2 is much smaller than S1, and since the pressure is inversely proportional to the force-bearing area under the same external force, the pressure P1 of the resultant force F1 acting on the ordinary sensor is much smaller than the pressure P2 of the resultant force F2 acting on the sensor provided with the convex structure. Under the condition of the same external force, the pressure intensity of the sensor provided with the convex structure is higher, so that the generated deformation degree and friction force are higher, and correspondingly, the intensity of the generated electric signal is higher, therefore, the accuracy and the sensitivity of the sensor provided with the convex structure are greatly improved. Fig. 4a and 4b are schematic diagrams respectively showing the stress situation of a common sensor and a sensor provided with a convex structure.

Next, the effect of the above-mentioned bump structure in improving the accuracy and sensitivity of the monitoring result is confirmed through experiments:

fig. 5a shows the waveform of an electrical signal monitored by a pulse monitoring device without a raised structure. Since the pulse monitoring device shown in fig. 5a is not provided with a protrusion structure, the portion of the flexible wristband in direct contact with the skin of the human body is tightly attached to the skin in a smooth manner, which results in poor air permeability, and particularly when the material of the flexible wristband is poor in air permeability, fatigue or discomfort, such as slight itching, pain, etc., may occur to the skin due to poor air permeability or long binding time if the user uses the device for a long time.

Fig. 5b shows the waveform of the electrical signal monitored by the pulse monitoring device provided with a raised structure. Because the pulse monitoring device that adopts in fig. 5b is provided with protruding structure, consequently, there is certain space between the part that directly contacts with human skin on the flexible wristband and the skin, therefore the gas permeability is good, can alleviate skin fatigue, even long-time the use of user can not make skin appear because the gas permeability is poor or receive fatigue or the uncomfortable sense that causes such factors as constraint time length, improved user's comfort level. When the wrist strap is made of flexible fixing materials such as rubber, the advantages are more obvious. In addition, the scheme does not relate to medical theories such as acupoint massage, so that the position of the bulge does not need to be limited, only the tissues such as skin, muscles and the like with the area covered by the bulge are massaged, and the operation is simple, convenient and easy to learn.

As can be seen by comparing the waveforms of the electrical signals in fig. 5a and 5b, the amplitude of the waveform in fig. 5b is significantly higher than that in fig. 5 a. Therefore, the protruding structure can effectively enhance the voltage signal intensity of the friction generator type pulse sensor, and therefore the accuracy of the monitoring result and the sensitivity of the device are improved. The specific reasons are that: as for the area of the wrist portion of the human body which can be used for pulse signal collection and the area of the whole wrist band, the wrist pulse is a point signal, and the point signal is amplified to a surface through a protrusion, such as the area of a generator (the specific area can be changed according to the shape of the protrusion and the arrangement area of the protrusion), which is larger than the area of the wrist portion which can be used for pulse signal collection, thereby contributing to the enhancement of the pulse sensor voltage signal.

It will be appreciated by those skilled in the art that although the steps of the method are described sequentially for ease of understanding, it should be noted that the order of the steps is not strictly limited.

Those skilled in the art will appreciate that all or part of the steps in the method for implementing the above embodiments may be implemented by relevant hardware instructed by a program, and the program may be stored in a computer readable storage medium, such as: ROM/RAM, magnetic disk, optical disk, etc.

It will also be appreciated that the arrangement of devices shown in the figures or embodiments is merely schematic and represents a logical arrangement. Where modules shown as separate components may or may not be physically separate, components shown as modules may or may not be physical modules.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A pulse monitoring device, comprising: a flexible wrist strap and a flexible pulse sensor arranged on the flexible wrist strap, wherein,

the flexible wrist strap ring is arranged at the position of the pulse to be detected, the flexible pulse sensor is at least one friction generator capable of sensing the pulse to be detected, and at least one protruding structure is further arranged on the inner surface of the area of the flexible pulse sensor.

2. The pulse monitoring device according to claim 1, wherein the protrusion structures are dot-shaped protrusion structures and/or stripe-shaped protrusion structures.

3. The pulse monitoring device of claim 2, wherein the shape of the punctiform protruding structures is cylindrical, conical, prismatic, or pyramidal;

the cross section of the strip-shaped convex structure is semicircular, triangular or rectangular.

4. The pulse monitoring device according to claim 3, wherein the arrangement direction of the strip-shaped protrusions is the same as the pulse to be measured.

5. The pulse monitoring device according to claim 3, wherein the height of the raised structures is 0.5 mm to 5 mm and the edge spacing between adjacent raised structures is 1 mm to 20 mm.

6. The pulse monitoring device of claim 1, wherein the flexible wrist strap is made of elastic rubber or elastic fabric, and the protrusion structure is made of elastic rubber.

7. The pulse monitoring device of claim 1, wherein the flexible wristband further comprises an outer wristband and an inner wristband in a stacked arrangement, the flexible pulse sensor being disposed between the outer wristband and the inner wristband, and the raised structure being disposed on the inner wristband.

8. The pulse monitoring device of claim 1 wherein the friction generator is a three-layer structure, a four-layer structure or a five-layer structure, wherein the friction generator comprises at least two opposing surfaces forming a friction interface, and wherein the friction generator has at least two outputs.

9. The pulse monitoring device according to claim 8, wherein a micro-nano structure is provided on at least one of the two opposing surfaces forming the friction interface.

10. The pulse monitoring device of claim 1 wherein said flexible pulse sensor is a unitary friction generator covering all or a portion of said flexible wrist strap; or,

the flexible pulse sensor is a plurality of friction generators which are uniformly distributed in the whole area or the local area of the flexible wrist strap and are arranged in an array mode.

11. The pulse monitoring device of claim 1, further comprising:

and the display device is connected with the output end of the flexible pulse sensor and is used for displaying the monitoring result of the flexible pulse sensor.