CN114469102B - Wearable anemia rapid detection device based on electromagnetic induction effect - Google Patents

Wearable anemia rapid detection device based on electromagnetic induction effect Download PDF

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Publication number
CN114469102B
CN114469102B CN202210126853.4A CN202210126853A CN114469102B CN 114469102 B CN114469102 B CN 114469102B CN 202210126853 A CN202210126853 A CN 202210126853A CN 114469102 B CN114469102 B CN 114469102B
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China
Prior art keywords
electromagnetic induction
copper
wristband
detection device
anemia
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CN202210126853.4A
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CN114469102A (en
Inventor
张静
孙宇
康玮
宋英
佘媛媛
张丹宁
黄磊
李涛
徐敏
罗丹丹
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Kunming Maternal And Child Health Hospital
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Kunming Maternal And Child Health Hospital
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44CPERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/0007Bracelets specially adapted for other functions or with means for attaching other articles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/242Detecting biomagnetic fields, e.g. magnetic fields produced by bioelectric currents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/68Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802Sensor mounted on worn items
    • A61B5/681Wristwatch-type devices

Abstract

The invention discloses a wearable anemia rapid detection device based on an electromagnetic induction effect, which comprises a detection device main body and an electromagnetic induction wristband, wherein two connecting belts are integrally formed on one side surface of the electromagnetic induction wristband, a round hole parallel to the connecting belts is integrally formed at one end of the connecting belts, which is far away from the electromagnetic induction wristband, and the round hole is connected to a mounting position on the surface of a shell of the detection device main body through a pin; according to the invention, the coil structure is compounded into the wrist strap to form the electromagnetic induction wrist strap, so that the current intelligent wearable watch equipment can have the function of detecting anemia. The invention has simple structural improvement on the wrist strap, and can well maintain the stability of the structure by compounding the lead and the copper sheet with soft silica gel or rubber material with damping effect to form a flexible PCB structure.

Description

Wearable anemia rapid detection device based on electromagnetic induction effect
Technical Field
The invention relates to a quick anemia detection device, in particular to a wearable quick anemia detection device based on an electromagnetic induction effect.
Background
Common symptoms of anemia are dizziness, headache, hypodynamia, tiredness, palpitation, short breath after activity, dim eyesight, tinnitus and the like, and when anemia occurs, people often cannot control their own bodies, which leads to unpredictable and irreparable consequences, and common anemia includes iron deficiency, blood loss anemia, chronic hemolytic anemia and the like. Wherein iron deficiency anemia refers to anemia that occurs due to the depletion of stored iron in the body and inability to meet the needs of normal erythropoiesis. According to syncope sign, the rapid detection and treatment of anemia symptoms and early discovery and early prevention are particularly important.
At present, an electromagnetic induction effect-based anemia detection device exists, namely, a magnetic field is generated according to the Biot-Savart law, namely, moving charges, and biological current formed by flowing of red blood cells (carried ferrous ions) in blood of a person to be detected and the biological electricity generated magnetic field are detected. At present, no wearable device for realizing detection by utilizing the remote device is available, and the device is fused with the currently popular wearable device, so that the performance of the device can be improved, and the development of big health data can be promoted.
Disclosure of Invention
The invention aims to provide a wearable anemia rapid detection device based on an electromagnetic induction effect, so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a wearable anemia quick detection device based on electromagnetic induction effect, includes detection device main part and electromagnetic induction wrist strap, and electromagnetic induction wrist strap's one side surface integrated into one piece has two connecting bands, and the connecting band is kept away from electromagnetic induction wrist strap's one end integrated into one piece has the round hole rather than parallel, and the round hole passes through pin connection at the installation position of detection device main part's shell surface; the electromagnetic induction wristband is characterized in that a plurality of copper sheets and a plurality of copper wires are embedded in the electromagnetic induction wristband, one end of each copper wire is welded with the copper sheets collinear with the copper sheets, two copper sheets close to two sides of the electromagnetic induction wristband are respectively connected with copper needles A through corresponding copper wires, other copper wires in the middle of the electromagnetic induction wristband are longer than copper wires in the two sides of the electromagnetic induction wristband, the other ends of the other copper wires in the middle of the electromagnetic induction wristband are bent towards the same direction, the other end parts of the other copper wires in the middle of the electromagnetic induction wristband are arranged collinearly with one end parts of the adjacent copper wires, and the other end parts of the other copper wires in the middle of the electromagnetic induction wristband are fixedly connected to a coil plug; the area of the electromagnetic induction wrist strap where the copper sheet is positioned is connected with an adjustable socket in a sliding way; the coil plug and the adjustable socket are respectively positioned on the electromagnetic induction wrist straps at two sides of the detection device main body, and the coil plug is inserted into the adjustable socket when in use.
As a further scheme of the invention, the electromagnetic induction wrist strap and the connecting strap are made of silica gel or rubber.
As a further scheme of the invention, the copper sheet is formed by compounding copper foil on the surface of an elastic plastic sheet.
The electromagnetic induction wrist strap is characterized in that two cylindrical rubber sleeves are integrally formed at one end of the electromagnetic induction wrist strap, which is close to the position of the copper sheet, and are connected with the metal frame through shaft rotation, one end of a connecting bolt is rotated between the two cylindrical rubber sleeves, and the total length of the bolt is larger than the width of the metal frame; the middle of the surface of the electromagnetic induction wristband, which is close to the other end of the electromagnetic induction wristband, is provided with a plurality of through grooves for the bolts to pass through.
The copper needle A is perpendicular to the surface of the electromagnetic induction wristband, and a cylindrical copper block is integrally formed in the part of the copper needle A positioned in the electromagnetic induction wristband; meanwhile, a square core shell integrally formed with the electromagnetic induction wristband is arranged outside the copper needle A, after the electromagnetic induction wristband is connected with the detection device main body, the square core shell is inserted into a slot formed in the back of the detection device main body, the copper needle A is connected with a copper needle socket welded on a circuit board in the detection device main body in an inserting mode, namely, the copper needle A is connected to an input end of an electromotive force detection circuit integrated on the circuit board through the socket, and an output end of the electric detection circuit is connected with the data processing module.
The coil plug is integrally formed into a cubic box shape with an opening, the coil plug is fixed on the surface of the electromagnetic induction wristband through an injection molding process, and the coil plug and the adjustable socket are respectively positioned on two surfaces of the electromagnetic induction wristband so as to be convenient to wear and connect.
The coil plug is characterized in that a plurality of threaded holes corresponding to copper wires are formed in the bottom of the coil plug, a plurality of copper alloy clamping pieces corresponding to the threaded holes are further arranged in the coil plug, the head of a copper screw is sequentially connected with the threaded holes of the coil plug and the middle threaded holes of the copper alloy clamping pieces in a threaded mode, the other end of the copper wire is respectively pressed between the tail of the copper screw and the bottom of the coil plug, and two adjacent threaded holes which are not connected with the other end of the copper wire are electrically connected through copper wires.
As a further scheme of the invention, the copper alloy clamping piece is a U-shaped elastic piece with a copper sheet which is inclined and formed and is used for clamping the copper needle B in the adjustable socket.
The main body of the adjustable socket is a rectangular ring which is formed by injection molding of silica gel materials and sleeved on an electromagnetic induction wrist strap, one surface of the rectangular ring, which is used for being attached to the surface of the electromagnetic induction wrist strap, is integrally formed into a groove from outside to inside, the bottom of the groove is compounded with a hard plastic sheet, six copper needles B are arranged in the groove, copper blocks are welded at the bottoms of the copper needles B, the copper blocks are formed in the rectangular ring in an injection molding mode, and the bottoms of the copper blocks are exposed on the inner wall surface of a sliding hole in the middle of the rectangular ring; when the adjustable socket slides on the electromagnetic induction wrist strap by means of self elastic positioning, the bottom of each copper block correspondingly contacts and slides on the corresponding copper sheet.
As a further scheme of the invention, the middle part of the electromagnetic induction wristband is provided with a light hole, the copper wires are arranged around the light hole, and the light hole is used for corresponding to the photoelectric sensor arranged on the back surface of the detection device main body.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the coil structure is compounded into the wrist strap to form the electromagnetic induction wrist strap, so that the current intelligent wearable watch equipment can have the function of detecting anemia. The invention has simple structural improvement on the wrist strap, and can well maintain the stability of the structure by compounding the lead and the copper sheet with soft silica gel or rubber material with damping effect to form a flexible PCB structure.
Drawings
Fig. 1 is a schematic structural diagram of a wearable anemia rapid detection device based on electromagnetic induction effect.
Fig. 2 is a schematic structural diagram of an electromagnetic induction wristband in a wearable anemia rapid detection device based on electromagnetic induction effect.
Fig. 3 is a schematic diagram of copper wire arrangement in an electromagnetic induction wristband in a wearable anemia rapid detection device based on electromagnetic induction effect.
Fig. 4 is a schematic structural diagram of a section of a wearable anemia rapid detection device based on electromagnetic induction effect.
Fig. 5 is a schematic structural diagram of an adjustable socket in a wearable anemia rapid detection device based on electromagnetic induction effect.
Fig. 6 is a schematic structural diagram of a coil plug in a wearable anemia rapid detection device based on electromagnetic induction effect.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 6, in the embodiment of the invention, a wearable anemia rapid detection device based on electromagnetic induction effect comprises a detection device main body 21 and an electromagnetic induction wristband 1, wherein two connecting bands 2 are integrally formed on one side surface of the electromagnetic induction wristband 1, a round hole parallel to the connecting bands 2 is integrally formed at one end of the connecting bands 2 away from the electromagnetic induction wristband 1, and the round hole is connected to a mounting position on the surface of a shell of the detection device main body 21 through a pin. The electromagnetic induction wrist strap 1 and the connecting strap 2 are made of silica gel or rubber, so that softness and insulation are ensured.
The surface of the electromagnetic induction wristband 1, which is positioned on one side of the detection device main body 21, is fixedly connected with six copper sheets 4 which are arranged in parallel through an injection molding process; the area of the electromagnetic induction wristband 1 where the copper sheet 4 is positioned is connected with an adjustable socket 6 in a sliding way; the copper sheet 4 is formed by compounding copper foil on the surface of an elastic plastic sheet, and the purpose of the copper sheet 4 is to enlarge the contact area with a metal sliding block in the adjustable socket 6 so as to ensure that a coil structure is formed by a wire in the electromagnetic induction wristband 1 after the electromagnetic induction wristband is worn.
Two cylindrical rubber sleeves are integrally formed at one end of the electromagnetic induction wristband 1, which is close to the position of the copper sheet 4, and are connected with the metal frame 22 through shaft rotation, one end of a connecting bolt is rotated between the two cylindrical rubber sleeves, and the total length of the bolt is larger than the width of the metal frame 22; the middle of the surface of the electromagnetic induction wristband 1, which is close to the other end of the electromagnetic induction wristband, is provided with a plurality of through grooves for the bolts to pass through.
Two outermost copper needles A16 are respectively connected with two outermost copper sheets 4 through a first copper wire 10 and a sixth copper wire 11, the copper needles A16 are perpendicular to the surface of the electromagnetic induction wristband 1, and cylindrical copper blocks are integrally formed on the parts of the copper needles A16 located in the electromagnetic induction wristband 1; meanwhile, a square-core shell integrally formed with the electromagnetic induction wristband 1 is arranged outside the copper needle A16, after the electromagnetic induction wristband 1 is connected with the detection device main body 21, the square-core shell is inserted into a slot formed in the back of the detection device main body 21, and the copper needle A16 is plugged into a copper needle socket welded on a circuit board in the detection device main body 21, namely, the copper needle A16 is plugged into an input end of an electromotive force detection circuit integrated on the circuit board through the socket, and an output end of the detection circuit is connected with a data processing module, namely, after the wristband is worn by a human body, the bioelectricity generated by hemoglobin flow in human blood is monitored through a combined coil.
The second copper wire 12, the third copper wire 13, the fourth copper wire 14 and the fifth copper wire 15 are arranged between the first copper wire 10 and the sixth copper wire 11 at a time, one ends of the second copper wire 12, the third copper wire 13, the fourth copper wire 14 and the fifth copper wire 15 are correspondingly connected with the middle four copper wires 4 respectively, and the other ends of the second copper wire 12, the third copper wire 13, the fourth copper wire 14 and the fifth copper wire 15 are connected with the coil plug 8 positioned at the other side of the main body 21 of the detection device.
The coil plug 8 is integrally formed into a cubic box shape with an opening by plastic, the coil plug 8 is fixed on the surface of the electromagnetic induction wristband 1 through an injection molding process, and the coil plug 8 and the adjustable socket 6 are respectively positioned on two surfaces of the electromagnetic induction wristband 1 so as to be convenient for wearing and connecting; six threaded holes are formed in the bottom of the coil plug 8, the six threaded holes are respectively and correspondingly formed with six copper sheets 4, the other ends of the second copper wire 12, the third copper wire 13, the fourth copper wire 14 and the fifth copper wire 15 are fixedly connected in the corresponding threaded holes through copper screws, the other ends of the second copper wire 12, the third copper wire 13, the fourth copper wire 14 and the fifth copper wire 15 are respectively and correspondingly arranged in four adjacent threaded holes (as shown in fig. 3, namely, the other ends of the second copper wire 12, the third copper wire 13, the fourth copper wire 14 and the fifth copper wire 15 are respectively and curvedly formed in the same direction), and the other end ends of the second copper wire 12, the third copper wire 13, the fourth copper wire 14 and the fifth copper wire 15 are respectively and collinearly formed with one end parts of the first copper wire 10, the second copper wire 12, the third copper wire 13 and the fourth copper wire 14, and the other end parts of the second copper wire 12, the third copper wire 13 and the other end parts of the fourth copper wire 15 are respectively, and the other two adjacent threaded holes at the other ends of the coil plug 8 are electrically connected; six copper alloy clamping pieces are arranged in a cubic box shape formed by the coil plugs 8 and are fixedly connected to copper screws in threaded connection with corresponding threaded holes;
during actual installation, the U-shaped elastic sheet is manually placed from the opening of the cube box shape, then the other end of the wire is bent into a round shape and then sleeved on the copper screw, and finally the screw is inserted into the threaded hole from the back of the cube box shape by using a screwdriver, and the head of the copper screw screwed in the threaded hole is also connected with the hole formed in the middle of the U-shaped elastic sheet in a threaded manner, so that integral fixation is realized.
The copper alloy clamping piece is a U-shaped elastic piece with a copper sheet which is inclined and formed and is used for clamping the copper needle B in the adjustable socket 6.
The main body of the adjustable socket 6 is a rectangular ring 19 which is formed by injection molding of silica gel materials and sleeved on the electromagnetic induction wristband 1, one surface of the rectangular ring 19, which is used for being attached to the surface of the electromagnetic induction wristband 1, is integrally formed and processed into a groove from outside to inside, a hard plastic sheet 18 is compounded at the bottom of the groove, six copper needles B are arranged in the groove, copper blocks 17 are welded at the bottoms of the copper needles B, the copper blocks 17 are formed in the rectangular ring 19 in an injection molding way, and the bottoms of the copper blocks 17 are exposed on the inner wall surface of a sliding hole 20 in the middle of the rectangular ring 19; when the adjustable socket 6 slides on the electromagnetic induction wristband 1 by means of self elastic positioning, the bottom of each copper block 17 correspondingly slides on the corresponding copper sheet 4 in a contact manner.
When the detection device main body 21 is worn, the electromagnetic induction wristband 1 is manually placed on the wrist, then the other end part of the electromagnetic induction wristband 1 passes through the metal frame 22 to form a ring line fixed on the wrist of a human body, and a bolt is inserted into the through groove to realize positioning when the size of the wrist of the human body can be fixed; then manually sliding the adjustable socket 6, so that the coil plug 8 is correspondingly pressed manually to connect the coil plug 8 and the adjustable socket 6, and then six copper sheets in the electromagnetic induction wristband 1 and the first copper wire 10, the second copper wire 12, the third copper wire 13, the fourth copper wire 14, the fifth copper wire 15 and the sixth copper wire 11 form a coil structure.
Further, the middle part of the electromagnetic induction wristband 1 is provided with a light hole, and the second copper wire 12, the third copper wire 13, the fourth copper wire 14 and the fifth copper wire 15 are arranged around the light hole, and the light hole is used for corresponding to the photoelectric sensor of the back installation of the detection device main body 21, so as to ensure that the detection device main body 21 can integrate more functions.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims (9)

1. The utility model provides a wearable quick detection device of anemia based on electromagnetic induction effect, includes detection device main part (21) and electromagnetic induction wrist strap (1), and its characterized in that, one side surface integrated into one piece of electromagnetic induction wrist strap (1) has two connecting bands (2), and one end integrated into one piece that connecting band (2) kept away from electromagnetic induction wrist strap (1) has the round hole rather than parallel, and the round hole passes through the installation position of pin connection at detection device main part (21) shell surface; a plurality of copper sheets (4) and a plurality of copper wires are embedded in the electromagnetic induction wristband (1), one end of each copper wire is welded with the copper sheet (4) collinear with the copper sheet, two copper sheets (4) close to two sides of the electromagnetic induction wristband (1) are respectively connected with copper needles A (16) through corresponding copper wires, other copper wires positioned in the middle of the electromagnetic induction wristband (1) are longer than copper wires positioned at two sides of the electromagnetic induction wristband (1), the other ends of other copper wires positioned in the middle of the electromagnetic induction wristband (1) are bent towards the same direction, the other end parts of other copper wires positioned in the middle of the electromagnetic induction wristband (1) are arranged in a collinear manner with one end parts of adjacent copper wires, and the other end parts of other copper wires positioned in the middle of the electromagnetic induction wristband (1) are fixedly connected to a coil plug (8); the area of the electromagnetic induction wrist strap (1) where the copper sheet (4) is positioned is connected with the adjustable socket (6) in a sliding way; the coil plug (8) and the adjustable socket (6) are respectively positioned on the electromagnetic induction wrist bands (1) at two sides of the detection device main body (21), and the coil plug (8) is inserted and connected in the adjustable socket (6) when in use; the copper needle A (16) is perpendicular to the surface of the electromagnetic induction wristband (1), and a cylindrical copper block is integrally formed in the part of the copper needle A, which is positioned in the electromagnetic induction wristband (1); meanwhile, the copper needle A (16) is externally arranged into a square-frame-shaped shell integrally formed with the electromagnetic induction wristband (1), after the electromagnetic induction wristband (1) is connected with the detection device main body (21), the square-frame-shaped shell is inserted into a slot formed in the back of the detection device main body (21) and is connected with a copper needle socket welded on a circuit board in the detection device main body (21), namely, the copper needle A (16) is connected to the input end of an electromotive force detection circuit integrated on the circuit board through the socket, and the output end of the electromotive force detection circuit is connected with the data processing module.
2. The quick detection device for the wearable anemia based on the electromagnetic induction effect according to claim 1, wherein the electromagnetic induction wristband (1) and the connecting belt (2) are made of silica gel, so that softness and insulation are ensured.
3. The rapid detection device for anemia based on electromagnetic induction effect according to claim 1, wherein the copper sheet (4) is composed of an elastic plastic sheet surface composite copper foil.
4. The quick detection device for the wearable anemia based on the electromagnetic induction effect according to claim 1 or 2, wherein two cylindrical rubber sleeves are integrally formed at one end of the electromagnetic induction wristband (1) close to the position where the copper sheet (4) is located and are connected with the metal frame (22) through shaft rotation, one end of a connecting bolt is rotated between the two cylindrical rubber sleeves, and the total length of the bolt is larger than the width of the metal frame (22); the middle of the surface of the electromagnetic induction wristband (1) close to the other end of the electromagnetic induction wristband is provided with a plurality of through grooves for the bolts to pass through.
5. The quick detection device for anemia based on electromagnetic induction effect according to claim 1, wherein the coil plug (8) is formed into a cubic box shape with an opening by plastic integrally, the coil plug (8) is fixed on the surface of the electromagnetic induction wristband (1) through injection molding process, and the coil plug (8) and the adjustable socket (6) are respectively positioned on two surfaces of the electromagnetic induction wristband (1) so as to be convenient for wearing and connecting.
6. The quick detection device for the wearable anemia based on the electromagnetic induction effect according to claim 5, wherein a plurality of threaded holes corresponding to the number of copper wires are formed in the bottom of the coil plug (8), a plurality of copper alloy clamping pieces corresponding to the threaded holes are further arranged in the coil plug (8), the head of the copper screw is sequentially connected with the threaded holes of the coil plug (8) and the threaded holes in the middle of the copper alloy clamping pieces in a threaded manner, the other ends of the copper wires are respectively pressed between the tail of the copper screw and the bottom of the coil plug (8), and two adjacent threaded holes which are not connected with the other ends of the copper wires are electrically connected through copper wires.
7. The rapid detection device for anemia based on electromagnetic induction effect according to claim 6, wherein the copper alloy clip is a U-shaped spring sheet with a copper sheet being shaped in a skewed manner, for clamping the copper needle B in the adjustable socket (6).
8. The quick detection device for the wearable anemia based on the electromagnetic induction effect according to claim 1, wherein the main body of the adjustable socket (6) is a rectangular ring (19) which is made of a silica gel material through injection molding and sleeved on the electromagnetic induction wristband (1), one surface of the rectangular ring (19) which is used for being attached to the surface of the electromagnetic induction wristband (1) is integrally formed into a groove from outside to inside, a hard plastic sheet (18) is compounded at the bottom of the groove, six copper pins B are arranged in the groove, copper blocks (17) are welded at the bottoms of the copper pins B, the copper blocks (17) are injection molded in the rectangular ring (19), and the bottoms of the copper blocks (17) are exposed on the inner wall surface of a sliding hole (20) in the middle of the rectangular ring (19); when the adjustable socket (6) slides on the electromagnetic induction wrist strap (1) by means of self elastic positioning, the bottom of each copper block (17) correspondingly contacts and slides on the corresponding copper sheet (4).
9. The rapid detection device for anemia based on the electromagnetic induction effect according to claim 1, wherein a light hole is formed in the middle of the electromagnetic induction wristband (1), and copper wires are arranged around the light hole, and the light hole is used for a photoelectric sensor installed on the back of the corresponding detection device main body (21).
CN202210126853.4A 2022-02-11 2022-02-11 Wearable anemia rapid detection device based on electromagnetic induction effect Active CN114469102B (en)

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