CN110192849B

CN110192849B - Wearable equipment of intelligence

Info

Publication number: CN110192849B
Application number: CN201910469530.3A
Authority: CN
Inventors: 刘翔翔; 李星宇
Original assignee: Goertek Techology Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2022-10-14
Anticipated expiration: 2039-05-31
Also published as: CN110192849A

Abstract

The invention discloses intelligent wearable equipment. This wearable equipment of intelligence includes the casing, rhythm of the heart sensor and the PCB that is fixed in the casing, PCB and rhythm of the heart sensor are all located in the casing, rhythm of the heart sensor's light-emitting component and photosensitive element all are fixed in the one side that is close to the casing on the PCB, be equipped with the light zone that is used for rhythm of the heart sensor receiving and dispatching light on the casing, seamless being fixed with on the PCB keeps off the wall with the corresponding second of each first fender wall of seamless being fixed with on the casing, first fender wall keeps off the wall and makes by opaque material with the second, first fender wall keeps off the position of wall in the direction of height at least part overlapping with the second that corresponds, in order to shelter from the light of light-emitting component direct directive photosensitive element in the casing. In the module, a linear path is not arranged between the light-emitting element and the photosensitive element to transmit light, so that the light of the light-emitting element is difficult to be directly transmitted to the photosensitive element in the shell, and the light leakage problem of the heart rate sensor in the shell can be improved.

Description

Wearable equipment of intelligence

Technical Field

The invention relates to the technical field of wearable equipment, in particular to intelligent wearable equipment.

Background

Currently, smart wearable devices are increasingly being used to focus on the health of a user, such as heart rate monitoring functions, electrocardiogram functions, and the like. Aiming at the realization of the heart rate monitoring function, one method is a photoelectric transmission measurement method, the principle is that a sensor which is contacted with the skin of a heart rate device emits a beam of light to strike the skin, the reflected and transmitted light is measured, and the blood has absorption effect on light with specific wavelength, so that the wavelength is greatly absorbed each time the heart pumps blood, thereby being capable of confirming the heartbeat.

At present, a typical shading method is to block light by using a shading foam compression baffle between a light emitting element and a photosensitive element, but in the actual production process, the foam is easily compressed insufficiently, a linear passage is easily formed between the light emitting element and the photosensitive element, so that light emitted by the light emitting element is directly transmitted to the photosensitive element, error measurement is caused on heart rate measurement, and user experience is influenced.

Therefore, how to improve the light leakage problem of the heart rate sensor in the casing is a technical problem to be solved by those skilled in the art at present.

Disclosure of Invention

In view of this, an object of the present invention is to provide a smart wearable device of a smart wearable device, which can effectively improve the problem of light leakage of a heart rate sensor in a housing.

In order to achieve the purpose, the invention provides the following technical scheme:

an intelligent wearable device comprises a shell, a heart rate sensor and a PCB fixed on the shell, wherein the PCB and the heart rate sensor are arranged in the shell, a light-emitting element and a photosensitive element of the heart rate sensor are fixed on one side, close to the shell, of the PCB, a light-transmitting area used for the heart rate sensor to receive and transmit light is arranged on the shell, a first blocking wall is seamlessly fixed on the PCB, second blocking walls corresponding to the first blocking walls are seamlessly fixed on the shell, the first blocking wall and the second blocking walls are made of light-proof materials, and the first blocking wall and the corresponding second blocking walls are at least partially overlapped in the height direction so as to block the light, directly emitted to the photosensitive element, of the light-emitting element in the shell.

Preferably, the first blocking wall comprises a first annular blocking wall arranged outside one of the light-emitting element and the light-sensing element; the second retaining wall comprises a second annular retaining wall; the second annular blocking wall and the corresponding first annular blocking wall are nested with each other so as to block light rays which are directly emitted to the photosensitive element by the light-emitting element in the shell.

Preferably, the part of the first annular blocking wall far away from the PCB is partially sleeved with the corresponding part of the second annular blocking wall far away from the housing.

Preferably, the first annular blocking wall and the corresponding second annular blocking wall have a gap therebetween to form a broken-line-shaped passage.

Preferably, a flexible shade is disposed in the broken line pathway.

Preferably, each of the first annular blocking walls correspondingly encloses each of the light emitting elements.

Preferably, a connecting line of the two light emitting elements and a connecting line of the two light sensing elements form an X-shaped structure, and all the first annular blocking walls are integrally arranged to separate the two light sensing elements.

Preferably, the free end of the first blocking wall far away from the PCB is inserted into the free end of the second blocking wall far away from the housing along the height direction.

Preferably, the first blocking wall and the corresponding second blocking wall are arranged in a staggered manner in a direction perpendicular to the height direction.

Preferably, including locating intelligent wrist-watch main part in the casing and connecting in the watchband of casing, heart rate sensor with PCB all locates in the intelligent wrist-watch main part.

The invention provides intelligent wearable equipment of the intelligent wearable equipment, which comprises a shell, a heart rate sensor and a PCB (printed Circuit Board) fixed on the shell, wherein the PCB and the heart rate sensor are arranged in the shell, a light-emitting element and a photosensitive element of the heart rate sensor are fixed on one side, close to the shell, of the PCB, a light-transmitting area used for the heart rate sensor to receive and transmit light is arranged on the shell, a first blocking wall is seamlessly fixed on the PCB, a second blocking wall corresponding to each first blocking wall is seamlessly fixed on the shell, the first blocking wall and the second blocking wall are both made of light-tight materials, and the first blocking wall and the corresponding second blocking wall are at least partially overlapped in the height direction so as to block the light emitted by the light-emitting element to the photosensitive element directly in the shell.

The first wall that keeps off overlaps with the second wall that corresponds in the ascending position of direction of height at least part, can strengthen the shading effect in the casing, at every position department in the direction of setting up the wall in printing opacity region on the directional casing of PCB, light emitting component and photosensitive element are all separated, do not have straight line passageway transmission light between light emitting component and the photosensitive element, make light emitting component's light be difficult to directly pass to photosensitive element in the casing, can effectively improve the light leak problem of heart rate sensor in the casing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is an exploded view of a smart wearable device according to an embodiment of the present invention;

fig. 2 is a front view of a housing of a smart wearable device according to an embodiment of the present invention;

FIG. 3 is an enlarged view of FIG. 2 at A;

fig. 4 is a structural diagram of a housing of a smart wearable device according to an embodiment of the present invention;

FIG. 5 is an enlarged view of FIG. 4 at B;

fig. 6 is a front view of a PCB of a smart wearable device according to an embodiment of the present invention;

fig. 7 is a structural diagram of a PCB of a smart wearable device according to an embodiment of the present invention;

fig. 8 is a front view of a first annular barrier of a smart wearable device according to an embodiment of the present invention;

fig. 9 is a block diagram of a first annular barrier of a smart wearable device according to an embodiment of the present invention;

fig. 10 is a front view of a smart wearable device according to an embodiment of the present invention;

FIG. 11 is a cross-sectional view C-C of FIG. 10;

FIG. 12 is an enlarged view of FIG. 11 at D;

fig. 13 is a schematic diagram illustrating a positional relationship between a first blocking wall and a second blocking wall in an intelligent wearable device according to a first embodiment of the present invention;

fig. 14 is a cross-sectional view of a smart wearable device provided in a second embodiment of the present invention;

FIG. 15 is an enlarged view at E in FIG. 14;

fig. 16 is a schematic diagram illustrating a positional relationship between a first blocking wall and a second blocking wall in an intelligent wearable device according to a second embodiment of the present invention;

fig. 17 is a structural diagram of a PCB of the smart wearable device according to the second embodiment of the present invention;

fig. 18 is a schematic diagram illustrating a positional relationship between a first blocking wall and a second blocking wall in a smart wearable device according to a third embodiment of the present invention;

fig. 19 is a schematic diagram illustrating a positional relationship between a first blocking wall and a second blocking wall in an intelligent wearable device according to a fourth embodiment of the present invention.

In fig. 1 to 19:

1-PCB, 11-first annular barrier wall, 111-first annular wall, 2-heart rate sensor, 21-photosensitive element, 22-luminous element, 3-shell, 31-second annular barrier wall, 311-second annular wall, 32-light transmission area, 33-second positioning groove, 34-first U-shaped wall, 35-second U-shaped wall.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide the intelligent wearable device of the intelligent wearable device, which can effectively improve the problem of light leakage of the heart rate sensor in the shell.

In the description of the invention, it is noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In an embodiment of the smart wearable device provided by the present invention, please refer to fig. 1 to 13, which includes a housing 3, a PCB1 and a heart rate sensor 2. The housing 3 may be a plastic member, and is generally light-shielding. PCB1 is fixed in casing 3, and PCB1 and heart rate sensor all set up inside casing 3. The light-emitting element 22 and the photosensitive element 21 of the heart rate sensor 2 are both fixed on the PCB1, and optionally, the heart rate sensor 2 is electrically connected to the PCB1 through an FPC fixed on the PCB1.

The shell 3 is provided with a light-transmitting area 32 for the heart rate sensor 2 to transmit and receive light. Specifically, a lens may be disposed on the light-transmitting region 32. Preferably, as shown in fig. 3, the light-transmitting areas 32 can be separated by a frame with a light-shielding function on the housing 3, one light-transmitting area 32 is correspondingly arranged for each light-emitting element 22, and one light-transmitting area 32 is correspondingly arranged for each light-sensing element 21.

During the heart rate detection, the light emitting element 22 is used for emitting the detection light to the outside of the housing 3 through the corresponding light transmitting area 32, and the light sensing element 21 is used for receiving the reflection light which is reflected by the skin and then returns to the inside of the housing 3 through the corresponding light transmitting area 32. The PCB1 may receive the signal of the light sensing element 21 and determine a biological parameter from the signal. The light emitting element 22 may emit detection light at a predetermined frequency, and may specifically be an LED, and the light sensing element 21 may specifically be a PD (Photo-Diode).

First blocking walls are seamlessly fixed on the PCB1, and second blocking walls corresponding to the first blocking walls are seamlessly fixed on the shell 3. The first blocking wall and the second blocking wall are made of opaque materials, and may be made of opaque plastics, such as PET plastics, black PC materials, or opaque metals. The first blocking wall and the corresponding second blocking wall are at least partially overlapped in the height direction H to block the light emitted from the light emitting element 22 to the light sensing element 21 in the housing 3. The height direction H is substantially parallel to a direction from the PCB1 to a wall surface of the housing 3 on which the light-transmitting region 32 is provided.

In this embodiment, the first blocking wall and the corresponding second blocking wall are at least partially overlapped in the height direction H, so that the shading effect in the housing 3 can be enhanced, at each position in the direction along the wall surface of the PCB1 pointing to the housing 3 on which the light transmission region 32 is disposed, the light emitting element 22 and the photosensitive element 21 are both separated, no straight line path is provided between the light emitting element 22 and the photosensitive element 21 to transmit light, so that the light of the light emitting element 22 is difficult to directly transmit to the photosensitive element 21 in the housing 3, and the problem of light leakage of the heart rate sensor 2 in the housing 3 can be effectively improved.

Further, the first blocking wall includes a first annular blocking wall 11 surrounding one of the light emitting elements 22 and the light sensing elements 21, and the first annular blocking wall 11 is seamlessly and fixedly disposed on the PCB1, which specifically includes the following conditions: as shown in fig. 6, each light emitting element 22 is surrounded by a corresponding first annular barrier wall 11, but the periphery of each light sensing element 21 is not provided with the corresponding first annular barrier wall 11; each photosensitive element 21 is surrounded by the corresponding first annular blocking wall 11, but the periphery of each light emitting element 22 is not correspondingly provided with the first annular blocking wall 11. Of course, each light emitting element 22 and each light receiving element 21 may be surrounded by the corresponding first annular barrier wall 11. The second blocking wall includes second annular blocking walls 31 seamlessly fixed on the housing 3 and respectively corresponding to the first annular blocking walls 11.

The elements (light-emitting element 22 or light-sensing element 21) have corresponding relationship with the first annular blocking wall 11 surrounding the elements, and usually one element corresponds to one first annular blocking wall 11 and one second annular blocking wall 31.

The second annular blocking wall 31 and the corresponding first annular blocking wall 11 are nested with each other to form a labyrinth structure to block the light emitted from the light emitting element 22 directly to the light sensing element 21 in the housing 3.

For the light-emitting element 22 and the light-sensing element 21 which are matched, in order to achieve the light-shielding effect, those skilled in the art can understand that any first annular blocking wall 11 should only enclose one of the light-emitting element 22 and the light-sensing element 21, but not both, taking as an example that the first annular blocking wall 11 is disposed outside the light-emitting element 22, the second annular blocking wall 31 is nested with the first annular blocking wall 11, the light-emitting element 22 is disposed between the first annular blocking wall 11 and the corresponding second annular blocking wall 31, and accordingly, the light-sensing element 21 is disposed outside the first annular blocking wall 11 and the corresponding second annular blocking wall 31, so as to achieve the light-shielding effect.

Specifically, as shown in fig. 13 corresponding to the present embodiment and fig. 16 corresponding to another embodiment, the second annular blocking wall 31 and the corresponding first annular blocking wall 11 are nested with each other to form a labyrinth structure, specifically, there is at least a portion where the first annular blocking wall 11 and the second annular blocking wall 31 are sleeved together, the portion where the first annular blocking wall and the second annular blocking wall are sleeved together refers to a portion where the first annular blocking wall and the second annular blocking wall are overlapped in the height direction H, and a portion where one of the first annular blocking wall and the second annular blocking wall axially extends out of the other one does not belong to the portion where the first annular blocking wall and the second annular blocking wall are sleeved together. More specifically, as shown in fig. 13, the distance between the end of the first annular blocking wall 11 away from the PCB1 and the housing 3 is smaller than the height of the second annular blocking wall 31, and accordingly, the distance between the end of the second annular blocking wall 31 away from the housing 3 and the PCB1 board is smaller than the height of the first annular blocking wall 11, and the middle portions of the first annular blocking wall 11 and the second annular blocking wall 31 form a staggered structure in the height direction H.

The shapes of the second annular blocking wall 31 and the first annular blocking wall 11 may be set according to actual needs, for example, as shown in fig. 5 and 8, in this embodiment, both the second annular blocking wall 31 and the first annular blocking wall 11 are rectangular ring structures with rounded corners. Of course, in other embodiments, the second annular blocking wall 31 and/or the first annular blocking wall 11 may also be provided in a ring-shaped structure. In addition, the color of the second annular blocking wall 31 and the first annular blocking wall 11 can be set to white, black or other colors as required.

In this embodiment, 360 all-round shading can be realized to first annular fender wall 11 and the mutual nestification of second annular fender wall 31 that corresponds, further improves the light leak problem of heart rate sensor 2 in casing 3.

Further, the part of the first annular blocking wall 11 far away from the PCB1 is sleeved with the corresponding part of the second annular blocking wall 31 far away from the housing 3. As shown in fig. 13, in a direction along the wall surface of the PCB1 pointing to the housing 3 where the light-transmitting region 32 is disposed (this direction is taken as a height direction H, and the axial directions of the first annular blocking wall 11 and the second annular blocking wall 31 are also generally parallel to the height direction H), the first annular blocking wall 11 and the second annular blocking wall 31 are sleeved with each other only at a B section of the middle portion, a section a of the first annular blocking wall 11 extends out of the second annular blocking wall 31, and a section C of the second annular blocking wall extends out of the first annular blocking wall 11, so that it is avoided that after assembly, a top of a section B of the first annular blocking wall 11 abuts against the housing 3 or a top of a section B of the second annular blocking wall 31 abuts against the PCB1 to affect the assembly between the PCB1 and the housing 3, and it is beneficial to ensure the assembly accuracy between the PCB1 and the housing 3. During shading, in the height direction H, the a section of the first annular blocking wall 11 is shaded independently, the B sections of the first annular blocking wall 11 and the second annular blocking wall 31 are shaded simultaneously, and the C section of the second annular blocking wall 31 is shaded independently.

Further, the first annular blocking wall 11 and the corresponding second annular blocking wall 31 have a gap therebetween, so that a broken-line-shaped passage is formed in the corresponding labyrinth structure, specifically, the broken-line-shaped passage is shown by a broken line at D of fig. 13 in the embodiment

Shaped passages, and in the embodiment shown in FIG. 16 in dashed lines

The annular passage can reduce the mutual impact between the surfaces of the first annular blocking wall 11 and the corresponding surfaces of the second annular blocking wall 31 in the assembling process, and further reduce the assembling difficulty.

Although the broken-line path formed in the labyrinth structure may connect the light emitting element 22 and the light sensing element 21, if the light emitted from the light emitting element 22 enters the broken-line path in the housing 3, the light intensity will be greatly weakened because the light will be reflected numerous times in the broken-line path, so that the light intensity transmitted through the path in the broken-line state will be greatly reduced. In the light shielding effect of the labyrinth structure, the size of the gap between the first annular blocking wall 11 and the corresponding second annular blocking wall 31 is designed in the design and processing process, so that the light intensity of the light emitting element 22 passing out of the broken-line-type passage to the photosensitive element 21 side is extremely low, and the photosensitive result of the photosensitive element 21 is not affected.

Of course, in other embodiments, the first annular barrier wall 11 and the corresponding second annular barrier wall 31 may be seamlessly nested, i.e., adjacent annular surfaces may abut.

Furthermore, a flexible shading member, for example, a shading compressed foam is disposed in the broken-line-type passage, and the compressed foam is compressed between the concave-convex surfaces formed by the first annular blocking wall 11 and the corresponding second annular blocking wall 31 and is attached to the broken-line-type passage, so that the shading performance of the labyrinth structure can be improved, and the transmission of light can be more effectively blocked. More specifically, the compressed foam may be bonded to the labyrinth structure by double-sided adhesive.

Further, the first annular blocking wall 11 is welded on the PCB1 in a seamless manner, and the arrangement position of the first annular blocking wall 11 can be further determined according to the position of the second annular blocking wall 31, so that the fixing is reliable. Optionally, the first annular blocking wall 11 may be soldered to the PCB1 by SMT, and it is necessary to ensure a seamless connection with the PCB1 and non-light-transmission between the two. Of course, in other embodiments, the first annular blocking wall 11 may be seamlessly adhered to the PCB1, and optionally, the first annular blocking wall 11 may be specifically adhered to the PCB1 by a double-sided adhesive, and it is necessary to ensure that it is seamlessly connected to the PCB1, and light cannot pass through between the first annular blocking wall 11 and the PCB1. Of course, in other embodiments, the first annular blocking wall 11 and the PCB1 may be integrally formed. The second annular stopper wall 31 and the housing 3 may be integrally injection-molded, or may be bonded or welded to the housing 3 without a seam.

Further, as shown in fig. 7, the first annular blocking wall 11 correspondingly encloses each light emitting element 22, that is, the first annular blocking wall 11 is correspondingly disposed outside the light emitting element 22, and the first annular blocking wall 11 is not correspondingly disposed outside the light sensing element 21, so as to block light from the source, which is beneficial to saving the space inside the housing 3. Of course, in other embodiments, referring to fig. 18 in particular, the first annular blocking wall 11 may correspondingly surround each photosensitive element 21, that is, the first annular blocking wall 11 is not correspondingly disposed outside the light emitting element 22, and only the photosensitive element 21 is protected from light, thereby achieving reliable light shielding and saving the internal space of the housing 3.

Further, as shown in fig. 6, a connecting line of the two light emitting elements 22 and a connecting line of the two light sensing elements 21 form an X-shaped structure, and all the first annular blocking walls 11 are integrally disposed, that is, all the first annular blocking walls 11 form the same component connected together to separate the two light sensing elements 21, so that the two light sensing elements 21 can also be separated by the first annular blocking walls 11, which can prevent the two light sensing elements 21 from interfering with each other, and further improve the reliability of the detection result. Wherein, a heart rate sensor 2 generally comprises a light-emitting element 22 and a light-sensing element 21, and the number of the heart rate sensors 2 can be set as two as shown in fig. 3, and can also be set as other numbers. In addition, the light emitting elements 22 and the light receiving elements 21 may be arranged in other manners, for example, a line connecting the two light emitting elements 22 is parallel to a line connecting the two light receiving elements 21.

Further, the free end of the first blocking wall far away from the PCB1 and the free end of the second blocking wall far away from the shell 3 are inserted in the height direction H, and at the moment, the side wall of the matched groove and the protrusion are sleeved together. As shown in fig. 12 and 13, the free end of the second blocking wall far from the housing 3 is provided with a second positioning groove 33, the free end of the first annular blocking wall 11 far from the PCB1 is inserted into the corresponding second positioning groove 33 of the second blocking wall, and at this time, the broken-line path extends to the position D

The light shading effect is further improved by the aid of the square channels. Of course, the number of the second positioning grooves 33 is not limited to one, and two or more may be provided. Or, the free end of the first blocking wall, which is far away from the PCB1, is provided with a first positioning groove, and the free end of the second blocking wall, which is far away from the housing, is inserted into the corresponding first positioning groove of the first blocking wall, which can also play a role in improving the shading effect.

Obviously, the first blocking wall and the second blocking wall are not limited to being arranged in the manner provided in the above-described embodiments. In another embodiment, the first blocking wall and the corresponding second blocking wall are arranged in a staggered manner in the direction perpendicular to the height direction H, which is beneficial to avoiding the collision between the first blocking wall and the corresponding second blocking wall during assembly. As shown in fig. 14 to 17, the second annular blocking wall 31 is disposed on the outer ring of the corresponding first annular blocking wall 11, that is, for the portion where the first annular blocking wall 11 and the second annular blocking wall 31 are sleeved together, the second annular blocking wall 31 is outside and the first annular blocking wall 11 is inside, and a good light shielding effect is provided between the first annular blocking wall 11 and the second annular blocking wall 31, which is convenient for processing. In particular, the second annular blocking wall 31 may be a rib integrally provided on the housing 3.

Alternatively, in another embodiment, the first annular blocking wall 11 and the second annular blocking wall 31 may each include at least two annular structures, as shown in fig. 18, the first annular blocking wall 11 has three first annular walls 111, the corresponding second annular blocking wall 31 has two second annular walls 311, and one second annular wall 311 is disposed between every two adjacent first annular walls, so as to form multiple protections. Of course, the number of the annular walls specifically included in the first annular blocking wall 11 and the second annular blocking wall 31 may be set according to actual needs.

Alternatively, in another embodiment, as shown in fig. 19, the first blocking wall is a first U-shaped wall 34 buckled to the light emitting element 22, the second blocking wall is a second U-shaped wall 35 buckled to the light sensing element 21, the openings of the first U-shaped wall 34 and the second U-shaped wall 35 face opposite, and the side of the first U-shaped wall 34 facing away from the light sensing element 21 is open. The first U-shaped wall 34 overlaps the second U-shaped wall 35 at a position in the height direction, and light shielding is achieved by the two U-shaped walls.

Further, wearable equipment of intelligence can be intelligent wrist-watch, correspondingly, its including the intelligent wrist-watch main part of locating in the casing with connect the watchband in the casing, rhythm of the heart sensor and PCB all locate in the intelligent wrist-watch main part. Of course, the intelligent wearable device can also be a smart band or other devices. Please refer to the prior art for the structure of other parts of the smart wearable device, which is not described herein again.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The intelligent wearable device provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. An intelligent wearable device, which comprises a shell (3), a heart rate sensor (2) and a PCB (1) fixed on the shell (3), wherein the PCB (1) and the heart rate sensor (2) are arranged in the shell (3), a light-emitting element (22) and a light-sensitive element (21) of the heart rate sensor (2) are fixed on one side of the PCB (1) close to the shell (3), a light-transmitting area (32) used for the heart rate sensor (2) to transmit and receive light is arranged on the shell (3), and the intelligent wearable device is characterized in that,

first blocking walls are seamlessly fixed on the PCB (1), second blocking walls corresponding to the first blocking walls are seamlessly fixed on the shell (3), the first blocking walls and the second blocking walls are both made of opaque materials, and the first blocking walls and the corresponding second blocking walls are at least partially overlapped in the height direction so as to shield light rays of the light-emitting element (22) directly emitted to the photosensitive element (21) in the shell (3);

the first blocking wall comprises a first annular blocking wall (11) which is arranged outside one of the light-emitting element (22) and the photosensitive element (21); the second retaining wall comprises a second annular retaining wall (31); the second annular blocking wall (31) is nested with the corresponding first annular blocking wall (11) so as to block the light rays emitted by the light emitting element (22) to the photosensitive element (21) directly in the shell (3);

the first annular blocking wall (11) and the corresponding second annular blocking wall (31) have gaps therebetween to form a broken-line-type passage.

2. The smart wearable device according to claim 1, wherein a portion of the first annular barrier wall (11) remote from the PCB (1) forms a partial socket with a corresponding portion of the second annular barrier wall (31) remote from the housing (3).

3. The smart wearable device of claim 1, wherein a flexible light shield is disposed in the dashed pathway.

4. The smart wearable device according to claim 1, wherein each of the first annular barrier walls (11) encloses each of the light emitting elements (22) in correspondence.

5. The smart wearable device according to claim 4, wherein a line connecting the two light emitting elements (22) and a line connecting the two light sensing elements (21) form an X-shaped structure, and all the first annular blocking walls (11) are integrally disposed to separate the two light sensing elements (21).

6. The smart wearable device according to any one of claims 1 to 5, wherein a free end of the first blocking wall away from the PCB (1) is plugged with a free end of the second blocking wall away from the housing (3) in a height direction.

7. The smart wearable device according to any one of claims 1 to 5, wherein the first blocking wall and the corresponding second blocking wall are arranged to be staggered in a direction perpendicular to a height direction.

8. The smart wearable device according to any of claims 1 to 5, comprising a smart watch body provided in the housing (3) and a watch band connected to the housing, wherein the heart rate sensor (2) and the PCB (1) are both provided in the smart watch body.