Wearable apparatus with olfactory testing function

Abstract

The present invention relates to the technical field of medical testing apparatuses. Disclosed is a wearable apparatus with an olfactory testing function. With regard to the technical problem of it being difficult for a conventional olfactory testing apparatus to satisfy self-testing of a patient, the technical solution in the present invention is: a wearable apparatus with an olfactory testing function, the wearable apparatus comprising a wrist strap, wherein an apparatus housing is fixedly connected to the wrist strap; an electronic element is fixedly connected to the apparatus housing; a testing strip is slidably connected to the apparatus housing, and the testing strip comprises a scanning portion, a limiting portion and a scraping strip portion; and a scanning apparatus is connected to the apparatus housing, and the scanning portion cooperates with the scanning apparatus. In the present invention, the testing strip that is randomly selected by a patient is scanned by means of the scanning apparatus, such that the patient cannot observe the type of an odorant substance corresponding to the testing strip, and thus the testing effect cannot be affected by inherent memory during multiple olfactory tests.

Description

A wearable device with olfactory detection function Technical Field

[0001] The present invention relates to the technical field of medical detection equipment, and in particular to a wearable device with an olfactory detection function. Background Art

[0002] The sense of smell is not only a basic ability for humans to perceive external odors and carry out their lives and work, but also reflects human physical health. For example, one of the most common early symptoms of many degenerative neurological diseases in the elderly (Parkinson's disease, Alzheimer's disease, Lewy body dementia, etc.) is the degeneration of olfactory function. Therefore, the combination of odor identification test and odor cognition ability test can predict the risk of cognitive decline or Alzheimer's disease.

[0003] However, the public's understanding of olfactory disorders is incomplete. The slow decline in olfactory ability is not obvious, and few people go to the hospital for testing and treatment due to decreased olfactory ability. In addition, the odor substances set on existing olfactory testing equipment (such as olfactory detection cards) are distributed in a single way. Patients are prone to form fixed memories after multiple tests, which affects the test results. Summary of the Invention

[0004] In order to overcome the shortcoming that conventional olfactory detection equipment is difficult to meet the self-testing needs of patients, the present invention provides a wearable device with an olfactory detection function.

[0005] The technical solution of the present invention is: it includes a wristband, the wristband is fixed to a housing, the housing is fixed to an electronic component, the housing is slidably connected to a detection strip, the detection strip is provided with a groove, the detection strip includes a scanning part, a limiting part and a scraping strip part, the scraping strip part has a scraping layer on the surface, and an odor substance is provided under the scraping layer, the housing is fixed to a scanning device, and the scanning part cooperates with the scanning device, which is characterized by: it also includes a first slide, the first slide is slidably connected to the housing, a spring is provided between the housing and the first slide, the first slide is rotatably connected to an axially uniformly distributed scraper, a torsion spring is provided between the first slide and the scraper, and the scraper cooperates with the scraping strip part; the housing is equipped with a switching mechanism for automatically switching the scraper after a single test; the housing is equipped with a flow mechanism for making the air in the housing flow in one direction; the housing is equipped with a cleaning mechanism for cleaning the end of the scraper at the end of a single test.

[0006] Preferably, the switching mechanism includes a slider, which is slidably connected to the casing, a tension spring is provided between the slider and the casing, the slider cooperates with the detection strip, the slider is rotatably connected to a first limit tooth uniformly distributed axially, the casing is rotatably connected to a one-way gear disk, the casing is rotatably connected to a first rotating wheel with a mirror distribution, one of the first rotating wheels in the mirror distribution and the one-way gear disk are driven by a bevel gear set and a pulley belt, and a limit belt is provided between the first rotating wheels in the mirror distribution.

[0007] Preferably, the limiting belt is provided with grooves distributed symmetrically with respect to the center, and the grooves cooperate with the scraper.

[0008] Preferably, the sliding block cooperates with the first sliding bracket to squeeze and limit the first sliding bracket.

[0009] Preferably, the circumference of the first rotating wheel is equal to twice the distance between adjacent scrapers, and is used to switch the grooves symmetrically distributed on the limiting belt.

[0010] Preferably, the first limiting teeth evenly distributed in the axial direction cooperate with the one-way toothed disc.

[0011] Preferably, the flow mechanism includes a pull rope, one end of the pull rope is connected to the slider, the casing is rotatably connected to the second rotating wheel, a torsion spring is provided between the casing and the second rotating wheel, the other end of the pull rope is connected to the second rotating wheel, the second rotating wheel is fixedly connected to a rotating frame, the rotating frame is rotatably connected to a second limiting tooth of an annular array, a torsion spring is provided between the rotating frame and the second limiting tooth, the casing is rotatably connected to a one-way gear column, the one-way gear column cooperates with the second limiting tooth, the casing is rotatably connected to a fan wheel, the one-way gear column and the fan wheel are driven by a bevel gear set and a pulley belt.

[0012] Preferably, the one-way gear column is fixed with an inertia wheel, and the inertia wheel is connected to the electronic component for testing the olfactory threshold.

[0013] Preferably, the cleaning mechanism includes a mirror-distributed second slide, each of the mirror-distributed second slides is slidably connected to the housing, an elastic rope is provided between the second slide and the housing, and the second slide is fixed with a mirror-distributed elastic telescopic plate, and the telescopic end of the elastic telescopic plate cooperates with the scraper.

[0014] Preferably, the limiting portion is frictionally engaged with the second slide, and the friction force between the limiting portion and the second slide is greater than the elastic force of the elastic rope between the second slide and the housing, and is less than the sum of the torsion force of the torsion spring between the housing and the second rotating wheel and the tension force of the tension spring between the housing and the slider.

[0015] The present invention uses a scanning device to scan a test strip randomly selected by a patient, so that the patient cannot observe the type of odor substance corresponding to the test strip, and thus the test effect will not be affected by inherent memory in multiple olfactory tests.

[0016] The slider squeezes the first slide to prevent the scraper from scraping the test strip and causing obstruction when the patient initially inserts the test strip. When the scraper needs to be scraped, the scraper is lowered to cooperate with the scraper, thereby improving the usability of the device.

[0017] The switching mechanism utilizes the fixed distance that the slider moves in each test to rotate the limit belt a fixed distance to switch the scraper that cooperates with the scraper part, so that the patient can use the same test strip for multiple tests, avoiding the situation where the patient fails to identify the type of odor in a single test and the test is invalid due to the inability to select the test strip with a specific odor.

[0018] During the test, a unidirectional airflow is formed inside the housing through the flow mechanism to enhance the diffusion effect of the odor substance, and the diffusion effect is quantified through the inertia wheel to enable the patient to test his or her own olfactory threshold.

[0019] The cleaning mechanism cleans the debris at the end of the scraper when all the scrapers are lifted during the process of switching the scrapers matched with the scraper strip part, so as to ensure the scraping effect of the scraper on the scraping layer of the scraper strip part. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic diagram of the three-dimensional structure of the present invention;

[0021] FIG2 is a schematic diagram of the three-dimensional structure of the housing, electronic components, scanning equipment and other parts of the present invention;

[0022] FIG3 is a schematic diagram of the three-dimensional structure of the scanning part, the limiting part and the scraping strip part of the present invention;

[0023] FIG4 is a schematic diagram of the three-dimensional structure of the scanning device, the first carriage, the scraper and other parts of the present invention;

[0024] FIG5 is a schematic diagram of the three-dimensional structure of the first carriage scraper and slider and other parts of the present invention;

[0025] FIG6 is a schematic diagram of the three-dimensional structure of the slider and the first limiting tooth and other parts of the present invention;

[0026] FIG7 is a schematic diagram of the three-dimensional structure of the first rotating wheel and the limiting belt and other parts of the present invention;

[0027] FIG8 is a schematic diagram of the three-dimensional structure of the pull rope, one-way gear column, fan wheel and other parts of the present invention;

[0028] FIG9 is a schematic diagram of the three-dimensional structure of the second rotating wheel, rotating frame, second limiting gear and other parts of the present invention;

[0029] FIG10 is a schematic diagram of the three-dimensional structure of the one-way gear column, fan wheel, inertia wheel and other parts of the present invention;

[0030] FIG11 is a schematic diagram of the three-dimensional structure of the scraper portion and the second slide and other parts of the present invention;

[0031] FIG12 is a schematic diagram of the three-dimensional structure of the second slide and elastic retractable plate and other parts of the present invention.

[0032] In the above drawings: 1-wristband, 2-housing, 3-electronic component, 4-detection strip, 401-scanning part, 402-limiting part, 403-scraping strip part, 5-scanning device, 6-first slide, 7-scraper, 8-slider, 9-first limiting tooth, 10-one-way gear disc, 11-first rotating wheel, 12-limiting belt, 13-pull rope, 14-second rotating wheel, 15-rotating frame, 16-second limiting tooth, 17-one-way gear column, 18-fan wheel, 19-inertia wheel, 20-second slide, 201-elastic rope, 21-elastic telescopic plate. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0034] Similar elements or parts are generally identified by similar reference numerals throughout the drawings; in the drawings, the elements or parts are not necessarily drawn to scale.

[0035] It should be noted that terms such as "up," "down," "left," and "right" used herein to indicate directions refer only to the position of the structure depicted in the corresponding drawings. Component numbers, such as "first" and "second," are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. Terms such as "connected" and "coupled" in this application, unless otherwise specified, include both direct and indirect connections (couplings).

[0036] Embodiment 1: A wearable device with an olfactory detection function, as shown in Figures 1 to 4, includes a wristband 1, the upper side of the wristband 1 is fixedly connected to a housing 2, an electronic component 3 is fixedly connected to the housing 2, a detection strip 4 is slidably connected to the housing 2, the detection strip 4 is provided with a groove, the detection strip 4 includes a scanning portion 401, a limiting portion 402 and a scraping portion 403, the scraping portion 403 is provided with a scraping layer on the surface, and an odor substance is provided under the scraping layer, a scanning device 5 is fixedly connected to the left side of the inner wall of the housing 2, the scanning portion 401 cooperates with the scanning device 5 to be scanned by it, and also includes a first slide 6, a switching mechanism, a flow mechanism and a cleaning mechanism, the first slide 6 is vertically slidably connected to the inner wall of the housing 2, and a spring is provided between the inner wall of the housing 2 and the upper side of the first slide 6, so that the first slide 6 is initially maintained in a lower position, and the upper side of the first slide 6 is rotatably connected to the scraper 7. A torsion spring is provided between the first slide 6 and the scraper 7, so that the scraper 7 is initially maintained in a downward rotation to the maximum angle, and the end of the scraper 7 cooperates with the scraping strip portion 403 to scrape the scraping layer on the scraping strip portion 403 so as to release the odor substances therein into the air. The switching mechanism is installed on the housing 2, and is used to enable the patient to automatically switch the scraper 7 after a single test so as to conduct continuous testing. The flow mechanism is installed on the housing 2, and is used to make the air in the housing 2 flow in one direction to improve the olfactory detection effect. The cleaning mechanism is used to clean the end of the scraper 7 at the end of a single test to remove the debris of the scraping layer of the scraping strip portion 403, so that the effect of scraping the scraping strip portion 403 is consistent each time, thereby improving the detection efficiency.

[0037] As shown in Figures 5 to 7, the switching mechanism includes a slider 8, which is horizontally slidably connected to the inside of the casing 2. A tension spring is provided between the slider 8 and the casing 2, so that the initial state of the slider 8 remains on the right side inside the casing 2. The slider 8 cooperates with the first slide 6 to prevent the scraper 7 from cooperating with the scraper portion 403 in the initial state. The right side of the slider 8 contacts the left inner wall of the groove of the detection strip 4, and is then driven by the detection strip 4 to slide to the left. The slider 8 is rotatably connected to six first limiting teeth 9 evenly distributed in the axial direction, and the casing 2 is rotatably connected to a one-way toothed disc 10. The first limiting teeth 9 cooperate with the one-way toothed disc 10 in one direction to drive It rotates unidirectionally, and the housing 2 rotates and is connected to two first rotating wheels 11 distributed in a mirror image. The first rotating wheel 11 on one side is driven by a bevel gear set and a pulley belt. A limiting belt 12 is provided between the two first rotating wheels 11 distributed in a mirror image. The limiting belt 12 is provided with two grooves distributed symmetrically with the center. The above-mentioned grooves cooperate with the scraper 7. The circumference of the first rotating wheel 11 is equal to twice the spacing between adjacent scrapers 7, which is used to enable the above-mentioned two grooves to switch normally during rotation. When the six first limiting teeth 9 evenly distributed in the axial direction all pass through the one-way toothed disk 10 and cooperate with it, the first rotating wheel 11 rotates 180°.

[0038] As shown in Figures 8 and 9, the flow mechanism includes a pull rope 13, one end of the pull rope 13 is connected to the slider 8, the pull rope 13 slides along the inner wall of the casing 2, and the inner wall of the casing 2 is rotatably connected to the second rotor 14. A torsion spring is provided between the casing 2 and the second rotor 14, so that the second rotor 14 automatically resets after rotation. The other end of the pull rope 13 is connected to the second rotor 14, the pull rope 13 is wrapped around the outer wall of the second rotor 14, and the inner wall of the second rotor 14 is fixed with a rotating rack 15. The rotating rack 15 is rotatably connected to three second limiting teeth 16 in an annular array, and a torsion spring is provided between the rotating rack 15 and the second limiting teeth 16, so that the second limiting teeth 16 initially remain rotated inward at a certain angle, and the upper side of the inner wall of the casing 2 is rotatably connected to a one-way gear column 17, which cooperates with the second limiting teeth 16, and the casing 2 is rotatably connected to two fan wheels 18 distributed in a mirror image, and the one-way gear column 17 and the fan wheel 18 are driven by a bevel gear set and a pulley belt.

[0039] As shown in FIG10 , an inertia wheel 19 is fixed to the upper side of the one-way gear column 17 . The inertia wheel 19 is connected to the electronic component 3 , and its rotation state is monitored by the electronic component 3 for quantifying the odor diffusion effect and testing the olfactory threshold.

[0040] The patient wears the device on the right wrist via the wristband 1 to facilitate testing or training. When the patient is about to undergo testing or training, the patient inserts the left side of the test strip 4 from the right side of the housing 2 and wakes up the electronic component 3 inside the device. The test strip 4 slides to the left in the housing 2 until the groove in the middle of the test strip 4 contacts the right side of the slider 8. At this time, the scanning unit 401 is just below the scanning device 5, and the left side of the test strip 4 has passed through the housing 2 and slid out from its left side. The scanning device 5 scans the scanning unit 401 to read the odor substance set on the scraping strip 403 on the test strip 4. The patient pinches the left side of the detection strip 4 with his left hand and pulls it to the left. The detection strip 4 drives the slider 8 to slide to the left together. The slider 8 loses the cooperation with the first slide 6. The first slide 6 drives the scraper 7 to move downward under the action of the spring, and is limited by the casing 2 after moving downward for a distance. At this time, three of the scrapers 7 are squeezed by the limiting belt 12 and rotated upward. One of the scrapers 7 cooperates with the groove of the adjacent limiting belt 12 and does not rotate, and its end contacts the detection strip 4. After the first slide 6 slides to the maximum distance, the leftmost side of the scraper strip part 403 just slides to below the end of the scraper 7.

[0041] In the above process, the front sides of the first axially evenly distributed limiting teeth 9 pass through the rear side of the one-way gear disc 10 and are squeezed and rotated by it. After passing through the one-way gear disc 10, the first limiting teeth 9 are reset under the action of the torsion spring between the first limiting teeth 9 and the slider 8. The one-way gear disc 10 is not driven to rotate during the above process.

[0042] During the process of the slider 8 sliding to the left, the tension spring between the slider 8 and the casing 2 accumulates force, the slider 8 pulls the pull rope 13 to rotate the second rotating wheel 14, and the torsion spring between the second rotating wheel 14 and the casing 2 accumulates force, and the second rotating wheel 14 drives the second limiting tooth 16 of the annular array to rotate through the rotating frame 15, and the second limiting tooth 16 cooperates with the one-way gear column 17 to drive it to rotate together, and the one-way gear column 17 then drives the inertia wheel 19 to rotate. At the same time, the one-way gear column 17 drives the fan wheel 18 to rotate through the bevel gear and the pulley belt, so that an airflow flowing to the left is generated in the casing 2, and the odor emitted due to the scraping strip portion 403 being scraped by the scraper 7 is discharged from the left side of the casing 2 along with the airflow, and is finally smelled by the patient.

[0043] During the above process, the slider 8 slides to the left to the maximum distance and is restricted by the casing 2. At this time, the scraper 7 is just located at the rightmost side of the scraper strip portion 403. At this time, the inertia wheel 19 continues to rotate due to inertia, and the fan wheel 18 continues to rotate through the one-way gear column 17, the bevel gear and the pulley belt drive until the inertia wheel 19 naturally stops rotating due to friction. The fan wheel 18 therefore stops rotating, and the odor gas is no longer discharged from the left side of the casing 2.

[0044] Then the patient releases the detection strip 4, and the slider 8 drives the detection strip 4 to slide to the right under the action of the tension spring between the slider 8 and the casing 2. At this time, the scraper 7 that cooperates with the groove of the limiting belt 12 is still in contact with the detection strip 4, but because the scraper 7 is set to the right, the scraper 7 will not scrape the detection strip 4 moving to the right. At the same time, the torsion spring between the second rotating wheel 14 and the casing 2 releases the torsion force to make the second rotating wheel 14 rotate in the opposite direction to rewind the pull rope 13, and drive the second limiting tooth 16 to rotate in the opposite direction through the rotating frame 15. The second limiting tooth 16 is squeezed by the one-way tooth column 17 and rotates in the direction away from the one-way tooth column 17, and then resets under the action of the torsion spring between the rotating frame 15 and the second limiting tooth 16. During this process, the second limiting tooth 16 does not drive the one-way tooth column 17 to rotate.

[0045] When the slider 8 slides to the right until the first limiting tooth 9 on the far right contacts the one-way gear disc 10, the first limiting tooth 9 cooperates with the one-way gear disc 10, and the slider 8 continues to slide to the right, thereby driving the one-way gear disc 10 to rotate through the first limiting tooth 9, and then driving the first rotating wheel 11 to rotate through the bevel gear and pulley belt, thereby causing the limiting belt 12 to rotate.

[0046] When the slider 8 slides to the right until the first limiting tooth 9 on the far left has completely passed the one-way toothed disc 10, the first rotating wheel 11 has just rotated 180°, and the groove on the limiting belt 12 has just moved the distance between adjacent scrapers 7. The other scraper 7 adjacent to the scraper 7 that cooperates with the scraper portion 403 cooperates with the scraper portion 403 in the groove of the limiting belt 12. When the groove on the top surface of the limiting belt 12 is located at the edge (above the first rotating wheel 11 on one side), the first rotating wheel 11 rotates 180° through the above process so that the groove is rotated to the bottom of the above-mentioned first rotating wheel 11, and the groove on the other side originally located on the bottom surface of the limiting belt 12 rotates to above the first rotating wheel 11 on the other side to cooperate with the scraper 7.

[0047] At this time, the slider 8 returns to its initial position, and the slider 8 re-squeezes the first slider 6 to lift the scraper 7. Then the patient approaches the left side of the device to inhale the odor gas. At this time, the display screen on the top surface of the casing 2 provides multiple options for the patient to choose from to complete a single olfactory test or training. The sliding distance of the slider 8 is known, and the odor substance diffused after the scraper portion 403 is scraped is a fixed value. When the patient pulls the detection strip 4 harder, the maximum rotation speed of the inertia wheel 19 is greater, and thus the number of revolutions of the inertia wheel 19 before it stops naturally is greater, and the more revolutions the fan wheel 18 rotates and the longer the rotation time is, the greater the amount of odor substances discharged from the casing 2. For patients who have already developed a certain degree of olfactory disorder, When the test strip 4 is pulled for the first time for testing, the patient may not smell or fully identify the odor. At this time, the patient pulls the test strip 4 again with more force to perform a second test until the patient can identify the type of odor and enter the correct option. The patient can repeat the test four times with one test strip 4. The electronic component 3 determines the diffusion amplitude of the odor substance in each test by detecting the maximum rotation speed or number of rotations of the inertia wheel 19, and calculates the patient's olfactory threshold based on the concentration of the odor substance on the scraping strip part 403, so that the patient can confirm the decrease or increase of his or her olfactory threshold for different odors through daily testing or training, and thus have a clear and direct understanding of the weakening or enhancement of his or her olfactory ability.

[0048] Embodiment 2: Based on embodiment 1, as shown in Figures 11 and 12, a cleaning mechanism is further included for cleaning the scraper 7. The cleaning mechanism includes two second slides 20 distributed in a mirror image. The two second slides 20 distributed in a mirror image are both horizontally slidably connected to the housing 2. An elastic rope 201 is provided between the second slide 20 and the housing 2 so that the second slide 20 is initially located on the left side of the interior of the housing 2. The two second slides 20 are both fixed with two elastic telescopic plates 21 distributed in a mirror image. The telescopic ends of the four elastic telescopic plates 21 cooperate with the adjacent scrapers 7 respectively. The limiting portion 402 cooperates with the lower side of the second slide 20 to drive the second slide 20 to move. The second slide 20 slides horizontally in the casing 2, and the friction force between the limiting portion 402 and the second slide 20 is greater than the elastic force of the elastic rope between the second slide 20 and the casing 2, and is less than the sum of the torsion force of the torsion spring between the casing 2 and the second rotating wheel 14 and the tension force of the tension spring between the casing 2 and the slider 8, so that when the detection strip 4 is pulled to the left by the patient, the limiting portion 402 can smoothly pass through the second slide 20, and the slider 8 drives the detection strip 4 and the second slide 20 to slide to the right together until the second slide 20 is limited by the casing 2 and cannot continue to move to the right, the slider 8 can drive the detection strip 4 to pass through the second slide 20 and continue to slide to the right until the slider 8 returns to its initial position.

[0049] When the second slide 20 is pulled to the left by the patient, the second slide 20 is restricted by the housing 2 and cannot slide to the left. The detection strip 4 overcomes the friction and is pulled to the left by the patient. When the detection strip 4 is driven by the slider 8 to slide to the right, when the limiting portion 402 contacts the second slide 20, the limiting portion 402 drives the second slide 20 to slide to the right together. In the process of the first rotating wheel 11 driving the limiting belt 12 to rotate, the corresponding groove of the limiting belt 12 loses the cooperation with the corresponding scraper 7. When the four scrapers 7 are all lifted by the limiting belt 12 and rotated to the highest position, the second slide 20 drives the elastic retractable plate 21 to slide to the right to the maximum position. In this process, the retractable end of the elastic retractable plate 21 squeezes the upper side of the scraper 7 to clean the scraping layer debris of the scraper portion 403 remaining on the upper side of the scraper 7, so as to avoid excessive accumulation of debris affecting the scraping effect of the scraper portion 403 and affecting the test effect.

[0050] At this time, the second slide 20 is limited by the housing 2 and cannot continue to move to the right. The limiting part 402 overcomes the friction between the second slide 20 and the housing 2 and continues to move to the right under the combined force of the torsion force of the torsion spring between the housing 2 and the second rotating wheel 14 and the tension force of the tension spring between the housing 2 and the slider 8. The second slide 20 loses its cooperation with the limiting part 402 and slides in the opposite direction under the action of the elastic rope between the second slide 20 and the housing 2 until it returns to the initial position. At this time, the slider 8 continues to slide until it returns to the initial position according to the above process, and the groove of the limiting belt 12 cooperates with another scraper 7 to complete a single test and cleaning.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention. The scope of protection claimed in the present invention is defined by the attached claims and their equivalents.

Claims

1. A wearable device with an olfactory detection function, comprising a wristband (1), the wristband (1) being fixedly connected to a housing (2), the housing (2) being fixedly connected to an electronic component (3), the housing (2) being slidably connected to a detection bar (4), the detection bar (4) being provided with a groove, the detection bar (4) comprising a scanning portion (401), a limiting portion (402) and a scraping portion (403), the scraping portion (403) being provided with a scraping layer on its surface, an odor substance being provided under the scraping layer, the housing (2) being fixedly connected to a scanning device (5), the scanning portion (401) cooperating with the scanning device (5), wherein: It also includes a first slide (6), the first slide (6) is slidably connected to the housing (2), a spring is provided between the housing (2) and the first slide (6), the first slide (6) is rotatably connected to a scraper (7) evenly distributed in the axial direction, a torsion spring is provided between the first slide (6) and the scraper (7), and the scraper (7) cooperates with the scraper portion (403); The housing (2) is equipped with a switching mechanism, which is used to enable the patient to automatically switch the scraper (7) after a single test; The casing (2) is equipped with a flow mechanism for enabling the air in the casing (2) to flow in one direction; The housing (2) is equipped with a cleaning mechanism for cleaning the end of the scraper (7) at the end of a single test.

2. A wearable device with olfactory detection function according to claim 1, characterized in that: The switching mechanism comprises a slider (8), the slider (8) being slidably connected to the housing (2), a tension spring being arranged between the slider (8) and the housing (2), the slider (8) cooperating with the detection strip (4), the slider (8) being rotatably connected to first limit teeth (9) uniformly distributed in the axial direction, the housing (2) being rotatably connected to a one-way toothed disc (10), the housing (2) being rotatably connected to first rotating wheels (11) distributed in a mirror image, one of the first rotating wheels (11) in the mirror image distribution and the one-way toothed disc (10) being driven by a bevel gear set and a pulley belt, and a limit belt (12) being arranged between the first rotating wheels (11) in the mirror image distribution.

3. A wearable device with olfactory detection function according to claim 2, characterized in that: The limiting belt (12) is provided with grooves that are centrally symmetrically distributed, and the grooves cooperate with the scraper (7).

4. The wearable device with olfactory detection function according to claim 2, characterized in that: The slide block (8) cooperates with the first slide frame (6) to squeeze and limit the first slide frame (6).

5. The wearable device with olfactory detection function according to claim 3, characterized in that: The circumference of the first rotating wheel (11) is equal to twice the distance between adjacent scrapers (7), and is used to switch the grooves symmetrically distributed on the limiting belt (12).

6. The wearable device with olfactory detection function according to claim 2, characterized in that: The first limiting teeth (9) evenly distributed in the axial direction cooperate with the one-way toothed disc (10).

7. The wearable device with olfactory detection function according to claim 4, characterized in that: The flow mechanism comprises a pull rope (13), one end of which is connected to the slider (8); the housing (2) is rotatably connected to a second rotating wheel (14); a torsion spring is arranged between the housing (2) and the second rotating wheel (14); the other end of the pull rope (13) is connected to the second rotating wheel (14); the second rotating wheel (14) is fixedly connected to a rotating frame (15); the rotating frame (15) is rotatably connected to a second limiting tooth (16) in an annular array; a torsion spring is arranged between the rotating frame (15) and the second limiting tooth (16); the housing (2) is rotatably connected to a one-way tooth column (17); the one-way tooth column (17) cooperates with the second limiting tooth (16); the housing (2) is rotatably connected to a fan wheel (18); the one-way tooth column (17) and the fan wheel (18) are driven by a bevel gear set and a pulley belt.

8. The wearable device with olfactory detection function according to claim 7, characterized in that: The one-way tooth column (17) is fixedly connected with an inertia wheel (19), and the inertia wheel (19) is connected to the electronic component (3) and is used to test the olfactory threshold.

9. The wearable device with olfactory detection function according to claim 1, characterized in that: The cleaning mechanism comprises mirror-distributed second slides (20), the mirror-distributed second slides (20) are all slidably connected to the housing (2), an elastic rope (201) is provided between the second slides (20) and the housing (2), the second slides (20) are fixedly connected to mirror-distributed elastic telescopic plates (21), and the telescopic ends of the elastic telescopic plates (21) cooperate with the scraper (7).

10. The wearable device with olfactory detection function according to claim 9, characterized in that: The limiting portion (402) is frictionally engaged with the second slide (20), and the friction force between the limiting portion (402) and the second slide (20) is greater than the elastic force of the elastic rope between the second slide (20) and the housing (2), and is less than the sum of the torsion force of the torsion spring between the housing (2) and the second rotating wheel (14) and the tension force of the tension spring between the housing (2) and the slider (8).

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