CN115919374B - Gynecological secretion sampling and detecting device - Google Patents
Gynecological secretion sampling and detecting device Download PDFInfo
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- CN115919374B CN115919374B CN202310151225.6A CN202310151225A CN115919374B CN 115919374 B CN115919374 B CN 115919374B CN 202310151225 A CN202310151225 A CN 202310151225A CN 115919374 B CN115919374 B CN 115919374B
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Abstract
The invention relates to the field of medical equipment, in particular to a gynecological secretion sampling and detecting device, which comprises: a housing for storing a gas; a movement unit including an electric push rod connected to the housing to bring the housing to a sampling area; the expansion unit comprises an air bag arranged on the side wall of the shell and a plurality of pressing plates arranged in the shell, and a plurality of telescopic rods are arranged between the pressing plates; the image acquisition unit is arranged at one end of the shell, far away from the electric push rod, and is used for acquiring an intra-vaginal image in real time and acquiring the contrast of the intra-vaginal image and the gray level of each pixel point; a sampling unit disposed within the image acquisition unit for sampling when the housing reaches a sampling area; the central control unit is used for acquiring the pushing speed of the electric push rod according to the pain pressing threshold of the vagina of the person to be sampled. The invention can enable the sampling unit to automatically enter the vagina to move, and is free from manual operation.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a sampling and detecting device for gynecological secretion.
Background
Vaginal secretions are mixed by vaginal mucosal exudates, cervical canal and endometrial gland secretions, the formation of which is related to estrogenic effects. When the ovaries are about to ovulate in the menstrual period, the ovaries are generally transparent, slightly sticky and egg-white due to the vigorous secretion of cervical glands. Before and after menstruation, vaginal mucosa exudates increase due to pelvic congestion. In the prior art, most detection personnel manually operate in the actual sampling process, a plurality of secretions exist at deeper parts in the vagina, direct sampling cannot be performed, the sampling difficulty is increased, and the privacy requirements of the personnel to be sampled cannot be met.
Chinese patent CN207755301U discloses a gynecological clinical leucorrhea sampling and inspecting device, which comprises a protective shell, a protective cover, a groove rod, a cannula and a cotton stick. The device has prolonged handheld length through inserting the cotton swab in the intubate, patient's vagina secretion is stained with on the doctor's hand when avoiding the sample, shelters from the sight when having avoided the sample, and after the sample, the cotton ball that the cotton swab front end was stained with the sample can seal in the sealed oval ball that shield and shield are constituteed, has avoided the sample by external pollution, but, does not solve and can't obtain the condition of vagina secretion and then lead to the insufficient problem of sample from the vagina speculum owing to being expanded inadequately by the sampler vagina.
Disclosure of Invention
The invention provides a gynecological secretion sampling and detecting device, which can solve the problem that insufficient sampling is caused by insufficient vaginal expansion of a sampled person and incapability of acquiring vaginal secretion from a vaginal speculum.
In order to achieve the above object, the present invention provides a sampling and detecting device for gynecological secretion, comprising:
the shell is used for storing gas, sliding grooves are formed in the inner walls of the two ends of the shell, and a plurality of piston ports are formed in the side wall of the shell;
the motion unit comprises an electric push rod connected with the shell so as to enable the shell to reach a sampling area and a motor arranged on one side of the electric push rod far away from the shell so as to drive the electric push rod to stretch and retract;
the expansion unit comprises a plurality of air bags arranged on the side wall of the shell to seal and store gas with the shell through a piston opening, and a plurality of pressing plates which are arranged in the shell and are respectively connected with the sliding grooves to extrude the gas in the shell to the air bags, and a plurality of telescopic rods are arranged between the pressing plates and used for driving the pressing plates to extrude the gas in the shell along the sliding groove direction through telescopic driving;
the image acquisition unit is arranged at one end of the shell, far away from the electric push rod, and is used for acquiring an intra-vaginal image in real time and acquiring the contrast of the intra-vaginal image and the gray level of each pixel point;
The sampling unit is arranged in the image acquisition unit and is used for sampling when the shell reaches a sampling area, and comprises a telescopic frame connected with the chute and used for adjusting the position of a cotton block, and a supporting plate connected with the telescopic frame to provide a reciprocating space for the cotton block, wherein the upper surface of the supporting plate is provided with a groove, and a rotating bracket used for driving the cotton block to slide in the groove is arranged in the groove;
the central control unit is respectively connected with the image acquisition unit, the sampling unit, the motion unit and the expansion unit and is used for acquiring the pushing speed of the electric push rod according to the pain pressing threshold of the vagina of a person to be sampled, primarily determining the real-time gas filling speed of each air bag according to the pushing speed of the electric push rod when the pushing distance of the electric push rod reaches a preset value, judging whether the current extension speed of each telescopic rod is regulated according to the pushing distance of the electric push rod, and judging whether the current image area is used as a sampling area according to the ratio of the number of pixels with gray level smaller than a first preset gray level threshold to the number of pixels with gray level larger than a second preset gray level threshold in the image.
Further, the central control unit presets the initial standard pushing speed of the electric push rod as v0, v0=alpha×mu×A0 is set, A0 is a preset standard value of the pain pressing threshold, alpha is an assignment coefficient, the central control unit obtains the pushing speed of the electric push rod according to the pain pressing threshold A of the vagina of the person to be sampled,
if A > A0, the central control unit judges that the running power of the motor is regulated to a corresponding value so as to set the pushing speed of the electric push rod to be v1, and v1=v0 is set;
if A is less than or equal to A0, the central control unit judges that the running power of the motor is regulated to a corresponding value so as to set the pushing speed of the electric push rod to be v2, and v2=v0× (1-e A-A0 ）；
Wherein e is the base number of natural logarithm, and mu is the preset standard value of friction coefficient.
Further, when the pushing distance of the electric push rod reaches d1, the central control unit adjusts the current pushing speed vi of the electric push rod to vi ', sets vi ' =0.5×vi, i=0, 1, controls the expansion rods to extend so that the pressing plates fill the air bags with air, and obtains the real-time air filling speed q of the air bags according to the current pushing speed vi ' of the electric push rod,
If vi ' < 0.5×v0, the central control unit acquires a real-time gas filling rate q= (1- (d ' -d 1)/(d ' +d1))×q0;
if vi '. Gtoreq.5×v0, the central control unit obtains a real-time gas filling speed q=q0× (1+ ((0.5×d1)/(d' +d1)));
wherein q0 is a preset standard value of initial gas filling speed, d' is a real-time pushing distance of the electric push rod, and d1 is a first preset pushing distance of the electric push rod.
Further, the central control unit judges whether to adjust the current extension speed of each telescopic rod according to the real-time pushing distance d' of the electric push rod, wherein,
if d' < 0.5× (d1+d2), the central control unit determines that the current extension speed of each telescopic rod is not adjusted;
if d '. Gtoreq.0.5× (d1+d2), the central control unit determines to adjust the current extension speed of each of the telescopic links to L ', such that L ' =l0× (1+ (q-q 0)/(q+q0))× (1+ (vi ' -0.5×v0)/vi ');
wherein L0 is the current extension speed of each telescopic rod, and d2 is the second preset pushing distance of the electric push rod.
Further, when the pushing distance of the electric push rod reaches d1, the central control unit obtains the gas accommodating setting amount of each air bag in the current sampling process according to the contrast C of the real-time image obtained by the image acquisition unit, wherein,
If C < C0, the central control unit obtains the gas accommodation setting quantity V1=min { Vmax, V0× (1+ (C0-C) of each air bag in the current sampling process 0.5 /C0 0.5 ）}；
If C is more than or equal to C0, the central control unit acquires the gas accommodation setting quantity V2 = V0 x C0 < 0 >/C in the current sampling process of each air bag;
wherein C0 is a preset standard contrast, vmax is the bearable gas accommodation amount of the person to be sampled for each airbag, V0 is the gas accommodation preset standard value of each airbag, v0=0.5×vm, vm is the gas limit accommodation amount of each airbag.
Further, the central control unit determines the bearable gas accommodation amount Vmax of the person to be sampled for each air bag according to the pressure pain threshold A at the vagina of the person to be sampled and the current pushing speed vi' of the electric push rod, wherein,
if (A/A0) x vi '/(0.5 Xv 0) is less than or equal to z, the central control unit sets the sustainable gas accommodation amount Vmax=Vmax (1- (A/A0) x vi'/(0.5 Xv 0 x z)) of the person to be sampled for each of the airbags;
if (a/A0) ×vi'/(0.5×v0) > z, the central control unit sets the sustainable gas accommodation amount vmax=vm× (1- |A-A0|/a) of the person to be sampled for each of the airbags;
wherein z is a preset control constant.
Further, the gynecological secretion sampling and detecting device further comprises an illumination unit arranged at two sides of the image acquisition unit to illuminate the sampling area so as to enable the deep vagina image to be clearly and distinguishably distinguished, wherein the central control unit controls the image acquisition unit to acquire the contrast C 'of the real-time image when the gas filling quantity of each air bag reaches the gas accommodation set quantity Vu of each air bag in the current sampling process, and judges whether to adjust the illumination intensity of the illumination unit according to the contrast C' of the real-time image, wherein u=1, 2,
if C ' < C0, the central control unit judges that the illumination intensity of the illumination unit is adjusted from P0 to P1, and P1=P0× (1+ln (C0/C ')/lnC ');
if C' is more than or equal to C0, the central control unit judges that the illumination intensity of the illumination unit is not regulated;
wherein P0 is a preset initial value of illumination intensity.
Further, the image acquisition unit acquires the gray scale of each pixel point in the image in real time, the central control unit acquires the number N1 of the pixel points with the gray scale smaller than a first preset gray scale threshold value in the image and the number N2 of the pixel points with the gray scale larger than a second preset gray scale threshold value in the image, and judges whether the current image inner area is taken as a sampling area according to the ratio of the N1 to the N2,
If N1/N2 is less than or equal to 2, the central control unit judges that the area in the current image is a sampling area;
if N1/N2 is more than 2, the central control unit judges that the area in the current image is a non-sampling area.
Further, when the pushing distance of the electric push rod reaches d2 and the central control unit does not acquire a sampling area, the central control unit controls the image acquisition unit to acquire the gray scale of each pixel point in the image in real time, and determines whether to take the area in the current image as the sampling area according to whether the pixel point with the gray scale larger than a second preset gray scale threshold exists in the image,
if the pixel points with the gray level larger than the second preset gray level threshold value exist in the image, the central control unit judges that the area in the current image is used as a sampling area;
if no pixel point with the gray level larger than a second preset gray level threshold exists in the image, the central control unit judges that the area in the current image is not used as a sampling area, and the motor continues to run until the pushing distance of the electric push rod reaches d3;
wherein d3 is a third preset pushing distance of the electric push rod.
Further, the central control unit controls the motor to stop running when acquiring the sampling area, and acquires the sampling mode of the sampling unit according to the proportion beta of the number of pixels with the gray level larger than a second preset gray level threshold value in the image, wherein beta=N2/(N1+N2),
If beta is less than or equal to beta 0, the sampling mode of the sampling unit obtained by the central control unit is scraping, the expansion bracket stretches to drive the cotton block to contact with the vaginal wall, the rotary bracket reciprocates in the groove by taking delta d as reciprocating displacement, and the reciprocating times n=min {2+ [2 x beta 0/beta ],10};
if beta is larger than beta 0, the central control unit acquires the sampling mode of the sampling unit as dipping, the telescopic frame stretches to drive the cotton block to be in contact with the vaginal wall, the rotary support moves to a vaginal position point corresponding to a pixel point, in the current image, of which the gray level is larger than a second preset gray level threshold value and the pixel point is closest to the cotton block, and the rotary support automatically rotates for a circle and retracts to a position before sampling;
wherein β0 is a preset threshold value of the pixel point number with gray level larger than a second preset gray level threshold value, 2×β0/β represents rounding 2×β0/β, Δd= (1- (β0- β)/β0)/dc, and dc is a preset highest threshold value of the round trip displacement of the sampling unit.
Compared with the prior art, the invention has the beneficial effects that the movement unit is arranged, the sampling unit can automatically enter the vagina to move by pushing by the electric push rod, manual operation is avoided, the personnel to be sampled can automatically sample, the privacy of a patient is effectively protected, the temperature sensing control unit is arranged, the shell of the sampling detection device can be preheated based on the external temperature and the temperature of the vaginal opening of the personnel to be sampled, the condition that the body sensing stimulus of the personnel to be sampled is too strong due to the excessively high temperature difference is avoided, the expansion unit is arranged, the expansion of the vagina is realized by filling air into the air bag, the intra-vaginal image acquired by the image acquisition unit can be clearly distinguished, the vagina can be prevented from tearing in the expansion process by filling the air bag with air, the image acquisition unit is arranged, the intra-vaginal image can be acquired in real time, the sampling area is further determined, the judgment difficulty of the sampling area is reduced, the sampling success rate is improved, the sampling mode of the sampling area is acquired by selecting the movement mode of the rotating bracket, and the secretion sampling amount meets the detection standard.
In particular, because the pain threshold varies from person to person, the pain sensitivity of the person to be sampled is classified according to the pain threshold of the person to be sampled, when the pain threshold of the person to be sampled is higher, the pain sensitivity of the person to be sampled is lower, the perceived pain is more dull, the advancing speed of the electric putter is not required to be adjusted, when the pain threshold of the person to be sampled is lower, the pain sensitivity of the person to be sampled is higher, the perceived pain is more sensitive, the advancing speed of the electric putter is reduced, the pain of the person to be sampled in the process of sampling can be ensured to be in the bearable range, and the sampling process is smoother.
In particular, because the image acquisition unit can be in direct contact with the vaginal wall when entering the vagina, and thus the acquired intra-vaginal image is blurred, the acquired vaginal image is clear and discernable through expanding the vagina.
In particular, the invention obtains the bearable gas containing amount of the personnel to be sampled for each air sac according to the pressure pain threshold of the vagina of the personnel to be sampled and the current pushing speed of the electric push rod, can set an upper limit for the gas containing setting amount of the air sac, avoid the damage caused by the excessive expansion of the vagina due to the excessively high gas containing design amount of the air sac, and avoid the discomfort of the personnel to be sampled due to the excessively high gas containing design amount of the air sac, thereby reducing the sampling efficiency, and simultaneously, the gas containing setting amount of the air sac is controlled to avoid the difficulty in reaching the sampling area due to the excessively high resistance in the sampling process.
In particular, when the gas filling amount of each air bag reaches the gas accommodating amount and the contrast of the real-time image acquired by the image acquisition unit still does not meet the requirement, a clear intra-vaginal image can be acquired by improving the illumination intensity of the illumination unit, so that an accurate sampling area is facilitated to be acquired, a detector can accurately acquire the intra-vaginal condition, and preliminary judgment of the intra-vaginal focus is facilitated.
In particular, the invention judges the quantity of vaginal secretion according to the ratio of the quantity of pixels with gray level smaller than a first preset gray level threshold to the quantity of pixels with gray level larger than a second preset gray level threshold, when the ratio is larger, the current area can be judged to be insufficient to acquire enough secretion sampling quantity, when the ratio is larger, the current area can be judged to be more secretion quantity and can be used as a detection sample, and the invention can acquire secretion samples with detection value by judging the sampling area and can improve the success rate of sampling.
In particular, when the pushing distance of the electric putter reaches the second preset pushing distance of the electric putter, the sampling area cannot be obtained all the time, which means that the personnel to be sampled is in the physiological stage with less secretion, and the sampling area judgment standard after the pushing distance of the electric putter reaches the second preset pushing distance of the electric putter becomes whether the pixel point with the gray level larger than the second preset gray level threshold exists or not, so that repeated sampling can be avoided, and the sampling efficiency is improved.
In particular, the sampling mode of the sampling unit is obtained according to the ratio of the number of the pixels with the gray level larger than the second preset gray level threshold value, and the number of the pixels is smaller, so that the secretion amount is smaller, and the secretion amount meeting the detection requirement can be ensured to be sampled through scratch type sampling. When the pixel point quantity occupied is relatively large, the secretion quantity can be stated to be more, the secretion can be prevented from being contacted with the shell to pollute through dipping, and the sampling efficiency can be improved.
In particular, the invention can judge whether the current shell temperature can be directly used for sampling detection or not by calculating the difference value between the real-time temperature of the vaginal opening and the preset temperature, when the difference value between the real-time temperature of the vaginal opening and the preset temperature is overlarge, the shell temperature is adjusted to enable the shell temperature to be close to the vaginal opening temperature, thereby avoiding the increase of sampling difficulty caused by overlarge somatosensory stimulation of a person to be sampled when the shell is in direct contact with the vaginal wall, and simultaneously, the discomfort of the person to be sampled can be reduced by adjusting the shell temperature.
Drawings
FIG. 1 is a schematic diagram of a gynecological secretion sampling and detecting device according to an embodiment of the invention;
FIG. 2 is a detailed side view of a platen of a gynecological secretion sampling and detecting device according to an embodiment of the present invention;
FIG. 3 is a detailed top view of a platen of a gynecological secretion sampling and detecting device according to an embodiment of the present invention;
FIG. 4 is a detailed view of a telescopic rod of a gynecological secretion sampling and detecting device according to an embodiment of the invention;
FIG. 5 is a front view of a sampling unit of a gynecological secretion sampling and detecting device according to an embodiment of the present invention;
fig. 6 is a side view of a sampling unit of a gynecological secretion sampling test device according to an embodiment of the present invention.
Reference numerals: 1. a housing; 2. a chute; 3. a pressing plate; 4. a telescopic rod; 5. a piston port; 6. an air bag; 7. a sampling unit; 8. a temperature sensor; 9. an image acquisition unit; 10. a lighting unit; 11. a temperature controller; 12. a movable door; 13. a display; 14. a motor; 15. an electric push rod; 71. cotton block; 72. a rotating bracket; 73. a supporting plate; 74. and a telescopic frame.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, 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 skilled in the art according to the specific circumstances.
Referring to fig. 1, a schematic diagram of a gynecological secretion sampling and detecting device according to an embodiment of the invention includes: the gas storage device comprises a shell 1, a piston and a gas storage device, wherein sliding grooves 2 are formed in the inner walls of the two ends of the shell 1, and piston ports 5 are formed in the side walls of the shell 1; a moving unit including an electric push rod 15 connected with the housing 1 to make the housing 1 reach a sampling area and a motor 14 arranged at a side of the electric push rod 15 away from the housing 1 to drive the electric push rod 15 to stretch and retract, an expanding unit including two air bags 6 arranged at a side wall of the housing 1 to close the housing 1 through a piston port 5 to store air and to expand a vagina by containing the air to change a self-expanding volume, two pressing plates 3 arranged in the housing 1 and respectively connected with each sliding chute 2 to press the air in the housing 1 to the air bags 6, and a plurality of telescopic rods 4 arranged between the two pressing plates 3 to drive each pressing plate 3 to press the air in the housing 1 along the sliding chute 2 direction by stretching; the image acquisition unit 9 is connected with the shell 1 and is used for acquiring an intra-vaginal image in real time and acquiring the contrast of the intra-vaginal image and the gray level of each pixel point; a sampling unit 7, disposed in the image acquisition unit 9, for sampling when the housing 1 reaches a sampling area, wherein when the sampling unit 7 samples a target sampling area, the movable door 12 is opened, and when the sampling unit 7 is in a non-sampling state, the movable door 12 is closed; a display 13 for displaying an intra-vaginal image in real time, and an illumination unit 10 disposed at both sides of the image acquisition unit 9 for illuminating the image acquisition unit 9 when the image acquisition unit 9 acquires an image of the deep vagina so that the image of the deep vagina is clearly distinguishable; the temperature sensing and controlling unit comprises a temperature sensor 8 arranged at the side end of the lighting unit 10 and used for acquiring real-time temperature of the vaginal orifice, and a temperature controller 11 connected with the shell 1 and used for preheating the shell 1; the central control unit (not shown in the figure) is respectively connected with the image acquisition unit 9, the sampling unit 7, the motion unit and the expansion unit, and is used for acquiring the pushing speed of the electric push rod 15 according to the pain threshold of the vagina of the person to be sampled, primarily determining the real-time gas filling speed for each air bag 6 according to the pushing speed of the electric push rod 15 when the pushing distance of the electric push rod 15 reaches a preset value, judging whether the current extension speed of each telescopic rod 4 is regulated according to the pushing distance of the electric push rod 15, and judging whether the current image area is used as a sampling area according to the ratio of the number of pixels with gray level smaller than a first preset gray level threshold to the number of pixels with gray level larger than a second preset gray level threshold in the image, and acquiring the sampling mode of the sampling unit 7 according to the ratio of the number of pixels with gray level larger than the second preset gray level threshold in the image when the central control unit acquires the sampling area.
With continued reference to fig. 1, when the sampling detection device starts to perform sampling detection, the temperature sensor 8 obtains real-time temperature of the vaginal opening, the central control unit controls the temperature controller 11 according to real-time temperature of the vaginal opening to regulate the temperature of the casing 1, the central control unit obtains the pressure pain threshold of the person to be sampled to obtain the pushing speed of the electric push rod 15, the change of the pushing speed of the electric push rod 15 is realized by adjusting the power of the motor 14, when the pushing distance of the electric push rod 15 reaches the first preset pushing distance of the electric push rod 15, the pressing plate 3 with two ends in the chute 2 is driven by the expansion of the telescopic rod 4 to slide in opposite directions, so that air between the casing 1 and the pressing plate 3 enters the air bag 6 through the piston opening 5 to realize expansion of the vagina, and controls the gas filling speed in the air bag 6 by controlling the expansion speed of the telescopic rod 4, the image acquisition unit 9 obtains the intra-vaginal image in real time to the display 13 when the electric push rod 15 runs, when the gas filling amount in the air bag 6 reaches the current sampling process is stored in the air container, the central control unit adjusts the light intensity of the illumination unit 10 according to the contrast of the real-time image obtained by the image acquisition unit 9, and the sampling unit rotates upwards to the sampling area 7 when the sampling area is opened.
Referring to fig. 2 and 3, fig. 2 is a detailed side view of a platen of the gynecological secretion sampling and detecting device according to an embodiment of the present invention, and fig. 3 is a detailed top view of a platen of the gynecological secretion sampling and detecting device according to an embodiment of the present invention, where the platen 3 is provided with an inner layer plate and an outer layer plate, and the inner layer plate is sleeved with the outer layer plate through a spring, so that the width of the inner layer plate can be changed along with the chord length change of the circular section of the cylinder housing when the inner layer plate slides up and down.
Fig. 4 is a detailed view of a telescopic rod of the gynecological secretion sampling and detecting device according to an embodiment of the present invention, wherein the telescopic rod 4 drives the pressing plate 3 to slide up and down through telescopic motion.
Referring to fig. 5 and 6, fig. 5 is a front view of a sampling unit of a gynecological secretion sampling device of the embodiment of the present invention, fig. 6 is a side view of a sampling unit of a gynecological secretion sampling device of the embodiment of the present invention, the sampling unit 7 includes a telescopic frame 74 connected to the chute 2, a supporting plate 73 connected to the telescopic frame 74, a groove is provided on an upper surface of the supporting plate 73 to enable the rotary frame 72 to slide, a rotary frame 72 for mounting a cotton block 71 is provided above the supporting plate 73, one end of the rotary frame 72 close to the groove is connected with a second motor (not shown in the figure) capable of moving along the groove, the second motor is disposed in the groove to drive the rotary frame 72 to slide along the groove and provide a driving force for self-rotation of the rotary frame 72, the sampling unit 7 further includes a cotton block 71 for sampling vaginal secretion, when the central control unit acquires a sampling area, the telescopic frame 74 enables the cotton block 71 to contact with the sampling area through telescopic frame, and when the sampling mode acquired by the central control unit is a scraping mode, the rotary frame 72 is provided with a groove to slide in the groove to enable the cotton block to slide along the groove to realize self-rotation of the sampling unit 72 to obtain vaginal secretion, thereby realizing self-rotation of the sampling.
Specifically, the invention sets up the motion unit, can make the sampling unit 7 enter the vagina and move by oneself through the promotion of the electric putter 15, avoid manual operation, and can make the personnel to be sampled sample voluntarily, protect patient's privacy effectively, the invention sets up the temperature sensing unit, can preheat the shell 1 of the detection device of said sample on the basis of external temperature and personnel's vaginal opening temperature to be sampled, avoid waiting to sample personnel to feel the stimulus too strongly to influence the sampling efficiency because of the temperature difference is too high, the invention sets up the expansion unit, realize the expansion to the vagina through the filling of gas to the gasbag 6, can make the intravaginal image that the image acquisition unit 9 obtained clearly discernible, and expand the vagina through the gas filling gasbag 6 can avoid the vagina to take place to tear in the expansion, the invention sets up the image acquisition unit 9, can obtain the intravaginal image in real time, and then confirm the sampling area, reduce the judgement degree of difficulty to the sampling area, improve the success rate of sampling, the invention obtains the sampling mode to the sampling area through the motion mode of selecting the runing support 72, in order to guarantee that the secretion sampling quantity meets the detection standard.
The central control unit presets the initial standard pushing speed of the electric push rod 15 as v0, sets v0=alpha×mu×a0, A0 is a preset standard value of the pain threshold, alpha is an assignment coefficient, and obtains the pushing speed of the electric push rod 15 according to the pain threshold A at the vagina of the person to be sampled, wherein,
if a > A0, the central control unit determines to adjust the running power of the motor 14 to a corresponding value to set the pushing speed of the electric push rod 15 to v1, and sets v1=v0;
if A is less than or equal to A0, the central control unit determines to adjust the operating power of the motor 14 to a corresponding value to set the pushing speed of the electric push rod 15 to v2, and sets v2=v0× (1-e A-A0 ）；
Wherein e is the base number of natural logarithm, and mu is the preset standard value of friction coefficient.
Specifically, the embodiment selects the pressure pain measuring instrument to measure the pain pressing threshold of the vagina of the person to be sampled, the pressure pain measuring instrument consists of a main body of a liquid crystal display, a probe rod and a rubber circular probe with the surface area of 1 cm, N/mm is taken as a unit of a test result, when the pressure pain measuring instrument is measured, a measuring point is selected, the pain measuring instrument probe is vertically placed on the pain measuring point, the pressure is slowly and stably applied, when the person to be sampled feels pain, the pressure application is stopped (the person to be sampled can also stop applying the pressure), and at the moment, the reading on the display is the pain pressing threshold of the person to be sampled.
Specifically, in this embodiment, α=2.5 mm is preferable, and μ=1 is preferable.
Specifically, because the pain threshold varies from person to person, the pain sensitivity of the person to be sampled is classified according to the pain threshold of the person to be sampled, when the pain threshold of the person to be sampled is higher, the pain sensitivity of the person to be sampled is lower, the perceived pain is more dull, the propulsion speed of the electric push rod 15 is not required to be adjusted, when the pain threshold of the person to be sampled is lower, the pain sensitivity of the person to be sampled is higher, the perceived pain is more sensitive, the propulsion speed of the electric push rod 15 is reduced, the pain of the person to be sampled in the tolerable range of the person to be sampled in the sampling process can be ensured, and the sampling process is smoother.
When the pushing distance of the electric push rod 15 reaches d1, the central control unit adjusts the current pushing speed vi of the electric push rod 15 to vi ', sets vi ' =0.5×vi, i=0, 1, controls the expansion rods 4 to extend so as to fill the air bags 6 with air by the pressing plates 3, and obtains the real-time air filling speed q of the air bags 6 according to the current pushing speed vi ' of the electric push rod 15, wherein,
if vi ' < 0.5×v0, the central control unit acquires a real-time gas filling rate q= (1- (d ' -d 1)/(d ' +d1))×q0;
If vi '. Gtoreq.5×v0, the central control unit obtains a real-time gas filling speed q=q0× (1+ ((0.5×d1)/(d' +d1)));
wherein q0 is a preset standard value of the initial gas filling speed, d' is a real-time pushing distance of the electric push rod 15, and d1 is a first preset pushing distance of the electric push rod 15.
The central control unit determines whether to adjust the current extension speed of each telescopic rod 4 according to the real-time pushing distance d' of the electric push rod 15, wherein,
if d' < 0.5× (d1+d2), the central control unit determines that the current extension speed of each telescopic rod 4 is not adjusted;
if d '. Gtoreq.0.5× (d1+d2), the central control unit determines to adjust the current extension speed of each of the telescopic links 4 to L ', such that L ' =l0× (1+ (q-q 0)/(q+q0))× (1+ (vi ' -0.5×v 0)/vi ');
wherein L0 is the current extension speed of each telescopic rod 4, and d2 is the second preset pushing distance of the electric push rod 15.
Specifically, the present embodiment is not limited to the preset standard value of the gas filling rate, and q0=5×10 is preferable -4 m da/s, the first preset pushing distance of the electric push rod 15 is not limited in this embodiment, and d1=2.5 cm is set in this embodiment.
When the pushing distance of the electric push rod 15 reaches d1, the central control unit obtains the gas accommodating setting amount of each air bag 6 in the current sampling process according to the contrast C of the real-time image obtained by the image acquisition unit 9, wherein,
if C < C0, the central control unit obtains the gas accommodation setting quantity V1=min { Vmax, V0× (1+ (C0-C) of each airbag 6 during the current sampling process 0.5 /C0 0.5 ）}；
If C is more than or equal to C0, the central control unit acquires the gas accommodation setting quantity V2=V0×C0/C of each air bag 6 in the current sampling process;
wherein C0 is a preset standard contrast, vmax is the bearable gas accommodation amount of the person to be sampled for each airbag 6, V0 is the gas accommodation preset standard value of each airbag 6, v0=0.5×vm, vm is the gas limitation accommodation amount of each airbag 6.
Specifically, since the image acquisition unit 9 can be in direct contact with the vaginal wall when entering the vagina, and thus the acquired vaginal image is blurred, the acquired vaginal image is clearly distinguished by expanding the vagina, the gas accommodating set amount in the current sampling process is acquired according to the contrast of the real-time image acquired by the image acquisition unit 9, when the image contrast is lower, the vagina can be fully expanded by selecting a larger gas accommodating set amount, further a clear image is acquired, and when the image contrast is higher, discomfort of a sampled person can be reduced by selecting a smaller gas accommodating set amount.
The central control unit determines the bearable gas volume Vmax of the person to be sampled for each air bag 6 according to the pressure pain threshold A at the vagina of the person to be sampled and the current pushing speed vi' of the electric push rod 15, wherein,
if (A/A0) x vi '/(0.5 Xv 0) is not more than z, the central control unit sets the sustainable gas accommodation amount Vmax=Vx (1- (A/A0) x vi'/(0.5 Xv 0 x z)) of the person to be sampled for each of the airbags 6;
if (a/A0) ×vi'/(0.5×v0) > z, the central control unit sets the sustainable gas accommodation amount vmax=vm× (1- |A-A0|/a) of the person to be sampled for each of the airbags 6;
wherein z is a preset control constant.
Specifically, the present embodiment is not limited to the preset control constant, and z=1.25 is set in the present embodiment.
Specifically, the invention obtains the gas containing limit value of the air bag 6 according to the pressure pain threshold of the vagina of the person to be sampled and the current pushing speed of the electric push rod 15, can set an upper limit for the gas containing amount of the air bag 6, avoid the damage caused by the excessively expanded vagina due to the excessively high gas containing amount of the air bag 6, avoid the discomfort of the person to be sampled caused by the excessively high gas containing amount of the air bag 6, and prevent the sampling process, thereby reducing the sampling efficiency, and simultaneously, control the gas containing amount of the air bag 6 to avoid the difficulty in reaching the sampling area due to the excessively high resistance in the sampling process.
The gynecological secretion sampling and detecting device further comprises an illumination unit 10 arranged at two sides of the image acquisition unit 9 for illuminating the sampling area to enable the deep vagina image to be clearly distinguished, wherein the central control unit controls the image acquisition unit 9 to acquire the contrast C 'of the real-time image when the gas filling quantity of each air bag 6 reaches the gas accommodating set quantity Vu of each air bag 6 in the current sampling process, and judges whether to adjust the illumination intensity of the illumination unit 10 according to the contrast C' of the real-time image, wherein u=1, 2,
if C ' < C0, the central control unit judges that the illumination intensity of the illumination unit 10 is adjusted from P0 to P1, and P1=P0× (1+ln (C0/C ')/lnC ');
if C' is more than or equal to C0, the central control unit judges that the illumination intensity of the illumination unit 10 is not regulated;
wherein P0 is a preset initial value of illumination intensity.
Specifically, when the gas filling amount of each airbag 6 reaches the gas containing amount and the contrast of the real-time image acquired by the image acquisition unit 9 does not meet the requirement yet, a clear intra-vaginal image can be obtained by increasing the illumination intensity of the illumination unit 10, which is favorable for acquiring an accurate sampling area, so that a detector can accurately acquire the intra-vaginal condition, and is favorable for preliminary judgment of the intra-vaginal focus.
The image acquisition unit 9 acquires the gray scale of each pixel point in the image in real time, the central control unit acquires the number N1 of the pixel points with the gray scale smaller than a first preset gray scale threshold value in the image and the number N2 of the pixel points with the gray scale larger than a second preset gray scale threshold value in the image, and judges whether the current image inner area is taken as a sampling area according to the ratio of the N1 to the N2,
if N1/N2 is less than or equal to 2, the central control unit judges that the area in the current image is a sampling area;
if N1/N2 is more than 2, the central control unit judges that the area in the current image is a non-sampling area.
Specifically, the invention judges the quantity of vaginal secretion according to the ratio of the quantity of pixels with gray level smaller than a first preset gray level threshold to the quantity of pixels with gray level larger than a second preset gray level threshold, when the ratio is larger, the current area can be judged to be insufficient to acquire enough secretion sampling quantity, when the ratio is larger, the current area can be judged to be more secretion quantity and can be used as a detection sample, and the invention can acquire secretion samples with detection value through judging the sampling area and can improve the success rate of sampling.
The central control unit controls the image acquisition unit 9 to acquire the gray level of each pixel point in the image in real time when the pushing distance of the electric push rod 15 reaches d2 and the central control unit does not acquire the sampling area, and determines whether to take the area in the current image as the sampling area according to whether the pixel point with the gray level larger than a second preset gray level threshold exists in the image,
If the pixel points with the gray level larger than the second preset gray level threshold value exist in the image, the central control unit judges that the area in the current image is used as a sampling area;
if no pixel point with the gray level larger than the second preset gray level threshold exists in the image, the central control unit judges that the area in the current image is not used as a sampling area, and the motor 14 continues to run until the pushing distance of the electric push rod 15 reaches d3;
wherein d3 is a third preset pushing distance of the electric push rod 15.
Specifically, the second preset pushing distance of the electric putter 15 is not limited in this embodiment, d2=6 cm is set in this embodiment, the third preset pushing distance of the electric putter 15 is not limited in this embodiment, and d3=8.5 cm is set in this embodiment.
Specifically, when the pushing distance of the electric push rod 15 reaches the second preset pushing distance of the electric push rod 15, the sampling area cannot be obtained all the time, which means that the person to be sampled is in the physiological stage with less secretion, and the sampling area judgment standard after the pushing distance of the electric push rod 15 reaches the second preset pushing distance of the electric push rod 15 becomes whether the pixel point with the gray level larger than the second preset gray level threshold exists or not, so that repeated sampling can be avoided, and the sampling efficiency is improved.
The central control unit controls the motor 14 to stop running when acquiring the sampling area, and acquires the sampling mode of the sampling unit 7 according to the pixel number ratio beta of the gray scale larger than the second preset gray scale threshold value in the image, wherein beta=n2/(n1+n2),
if β is less than or equal to β0, the sampling mode of the sampling unit 7 obtained by the central control unit is scraping, the expansion bracket 74 stretches to drive the cotton block 71 to contact with the vaginal wall, the rotary bracket 72 makes reciprocating motion in the groove by taking Δd as reciprocating displacement, and the reciprocating times n=min {2+ [2×β0/β ],10};
if β > β0, the sampling mode of the sampling unit 7 obtained by the central control unit is dipping, the expansion bracket 74 is extended to drive the cotton block 71 to contact with the vaginal wall, the rotating bracket 72 is moved to a vaginal position point corresponding to a pixel point with gray level greater than a second preset gray level threshold value and closest to the cotton block 71 in the current image, and the rotating bracket 72 is retracted to the pre-sampling position after self-rotation for a circle;
wherein β0 is a preset threshold value of the pixel number with gray level greater than a second preset gray level threshold value, 2×β0/β represents rounding 2×β0/β, Δd= (1- (β0- β)/β0)/dc, and dc is a preset maximum threshold value of the round trip displacement of the sampling unit 7.
Specifically, the cotton piece 71 moves back and forth from the movement start point until returning to the movement start point, and dc is equal to the length of the groove on the surface of the supporting plate 73.
Specifically, the sampling mode of the sampling unit 7 is obtained according to the ratio of the number of pixels with gray level larger than the second preset gray level threshold, and the number of pixels is smaller, so that the secretion amount is smaller, and the secretion amount meeting the detection requirement can be ensured to be sampled through scratch type sampling. When the pixel point quantity occupied is relatively large, the secretion quantity can be stated to be more, the secretion can be prevented from being contacted with the shell 1 to be polluted through dipping, and the sampling efficiency can be improved.
The temperature controller 11 preheats the shell 1 to a preset temperature T0, the temperature sensor 8 obtains the real-time temperature Ty of the vaginal opening, the central control unit calculates the difference DeltaT between the real-time temperature Ty of the vaginal opening and the preset temperature T0, deltaT=Ty-T0 is set, whether the current temperature of the shell 1 is regulated or not is judged according to the difference DeltaT, wherein,
if DeltaT is less than or equal to DeltaT 1, the central control unit judges that the current temperature of the shell 1 is regulated to T1, so that T1=min { T0× (1+ (T0-Ts) ×DeltaT/T0), 0.95×Ty };
if DeltaT 1 < DeltaT < DeltaT2, the central control unit judges that the current temperature of the shell 1 is not regulated;
If the delta T is not less than delta T2, the central control unit judges that the current temperature of the shell 1 is regulated to Ty;
wherein DeltaT 1 is a first preset temperature difference, deltaT 2 is a second preset temperature difference, and Ts is the real-time temperature of the external environment.
Specifically, the preset temperature is not limited in this embodiment, and t0=36 ℃ is set in this embodiment; in this embodiment, the first preset temperature difference and the second preset temperature difference are not limited, but Δt1= -0.6 ℃ and Δt2= 0.6 ℃ are preset.
Specifically, by calculating the difference between the real-time temperature of the vaginal opening and the preset temperature, the invention can judge whether the current temperature of the shell 1 can be directly used for sampling detection, when the difference between the real-time temperature of the vaginal opening and the preset temperature is overlarge, the temperature of the shell 1 is adjusted to enable the temperature of the shell 1 to be close to the temperature of the vaginal opening, thereby avoiding the increase of sampling difficulty caused by overlarge somatosensory stimulation of a person to be sampled when the shell 1 is in direct contact with the vaginal wall, and simultaneously, the discomfort of the person to be sampled can be reduced by adjusting the temperature of the shell 1.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A gynecological secretion sampling and detecting device, comprising:
the gas storage device comprises a shell (1) for storing gas, wherein sliding grooves (2) are formed in the inner walls of two ends of the shell (1), and a plurality of piston ports (5) are formed in the side wall of the shell (1);
the motion unit comprises an electric push rod (15) connected with the shell (1) so as to enable the shell (1) to reach a sampling area and a motor (14) arranged on one side of the electric push rod (15) away from the shell (1) so as to drive the electric push rod (15) to stretch;
the expansion unit comprises a plurality of air bags (6) which are arranged on the side wall of the shell (1) and used for sealing and storing air with the shell (1) through a piston opening (5), and a plurality of pressing plates (3) which are arranged in the shell (1) and are respectively connected with the sliding grooves (2) so as to extrude the air in the shell (1) to the air bags (6), wherein a plurality of telescopic rods (4) are arranged between the pressing plates (3) and used for driving the pressing plates (3) to extrude the air in the shell (1) along the sliding grooves (2) through telescopic driving;
The image acquisition unit (9) is arranged at one end of the shell (1) far away from the electric push rod (15) and is used for acquiring an intra-vaginal image in real time and acquiring the contrast of the intra-vaginal image and the gray level of each pixel point;
the sampling unit (7) is arranged in the image acquisition unit (9) and is used for sampling when the shell (1) reaches a sampling area, and comprises a telescopic frame (74) connected with the sliding groove (2) and used for adjusting the position of the cotton block (71) and a supporting plate (73) connected with the telescopic frame (74) to provide a reciprocating space for the cotton block (71), a groove is formed in the upper surface of the supporting plate (73), and a rotating bracket (72) used for driving the cotton block (71) to slide in the groove is arranged in the groove;
the central control unit is respectively connected with the image acquisition unit (9), the sampling unit (7), the motion unit and the expansion unit, and is used for acquiring the pushing speed of the electric push rod (15) according to the pain pressing threshold of the vagina of a person to be sampled, primarily determining the real-time gas filling speed for each air bag (6) according to the pushing speed of the electric push rod (15) when the pushing distance of the electric push rod (15) reaches a preset value, judging whether the current extension speed of each telescopic rod (4) is regulated according to the pushing distance of the electric push rod (15), and judging whether the current image area is used as a sampling area according to the ratio of the number of pixels with gray level smaller than a first preset gray level threshold to the number of pixels with gray level larger than a second preset gray level threshold in the image, wherein when the central control unit acquires the sampling area, the sampling mode of the sampling unit (7) is acquired according to the ratio of the number of pixels with gray level larger than the second preset gray level threshold in the image.
2. The gynecological secretion sampling test device according to claim 1, wherein the central control unit presets the initial standard pushing speed of the electric push rod (15) as v0, sets v0=α×μ×a0, A0 is a pain threshold preset standard value, α is an assigned coefficient, and the central control unit obtains the pushing speed of the electric push rod (15) according to the pain threshold a at the vagina of the person to be sampled,
if A > A0, the central control unit judges that the running power of the motor (14) is regulated to a corresponding value so as to set the pushing speed of the electric push rod (15) to be v1, and v1=v0 is set;
if A is less than or equal to A0, the central control unit judges that the running power of the motor (14) is regulated to a corresponding value so as to set the pushing speed of the electric push rod (15) to be v2, and v2 = v0 x (1-e A-A0 ）；
Wherein e is the base number of natural logarithm, and mu is the preset standard value of friction coefficient.
3. The gynecological secretion sampling and testing device according to claim 2, wherein said central control unit adjusts the current pushing speed vi of the electric push rod (15) to vi ' when the pushing distance of the electric push rod (15) reaches d1, sets vi ' =0.5×vi, i=0, 1, and controls the expansion of each telescopic rod (4) to allow each pressure plate (3) to fill each air bag (6) with air, and the central control unit obtains the real-time air filling speed q of each air bag (6) according to the current pushing speed vi ' of the electric push rod (15), wherein,
If vi ' < 0.5×v0, the central control unit acquires a real-time gas filling rate q= (1- (d ' -d 1)/(d ' +d1))×q0;
if vi '. Gtoreq.5×v0, the central control unit obtains a real-time gas filling speed q=q0× (1+ ((0.5×d1)/(d' +d1)));
wherein q0 is an initial gas filling speed preset standard value, d' is a real-time pushing distance of the electric push rod (15), and d1 is a first preset pushing distance of the electric push rod (15).
4. The gynecological secretion sampling test device according to claim 3, wherein said central control unit determines whether the current extension speed of each telescopic rod (4) is adjusted according to the real-time pushing distance d' of said electric push rod (15), wherein,
if d' < 0.5× (d1+d2), the central control unit determines that the current extension speed of each telescopic rod (4) is not adjusted;
if d '. Gtoreq.0.5× (d1+d2), the central control unit determines to adjust the current extension speed of each telescopic rod (4) to L ', such that L ' =l0× (1+ (q-q 0)/(q+q0))× (1+ (vi ' -0.5×v 0)/vi ');
wherein L0 is the current extension speed of each telescopic rod (4), and d2 is the second preset pushing distance of the electric push rod (15).
5. The gynecological secretion sampling and testing device according to claim 4, wherein when the pushing distance of said electric push rod (15) reaches d1, said central control unit obtains the gas accommodation setting amount of each air bag (6) in the current sampling process according to the contrast C of the real-time image obtained by said image acquisition unit (9), wherein,
if C < C0, the central control unit obtains a gas accommodation setting V1=min { Vmax, V0× (1+ (C0-C) of each airbag (6) during the current sampling process 0.5 /C0 0.5 ）}；
If C is more than or equal to C0, the central control unit acquires the gas accommodation setting quantity V2=V0×C0 < m >/C < m >;
wherein C0 is a preset standard contrast, vmax is a bearable gas accommodation amount of a person to be sampled for each airbag (6), V0 is a preset standard value of gas accommodation of each airbag (6), v0=0.5×vm, vm is a gas limit accommodation amount of each airbag (6).
6. The gynecological secretion sampling test device according to claim 5, wherein the central control unit determines the sustainable gas accommodation Vmax of the individual to be sampled for each balloon (6) according to the pressure pain threshold a at the vagina of the individual to be sampled and the current pushing speed vi' of the electric push rod (15), wherein,
If (A/A0) x vi '/(0.5 Xv 0) is less than or equal to z, the central control unit sets the sustainable gas accommodation amount Vmax=Vx (1- (A/A0) x vi'/(0.5 Xv 0 x z)) of the person to be sampled for each of the airbags (6);
if (A/A0) x vi'/(0.5 x v 0) z, the central control unit sets the sustainable gas accommodation amount Vmax=Vx (1- |A-A0|/A) of the personnel to be sampled for each air bag (6);
wherein z is a preset control constant.
7. The gynecological secretion sampling and detecting device according to claim 6, further comprising an illumination unit (10) provided at both sides of the image acquisition unit (9) to illuminate a sampling area so as to make a deep vaginal image clearly distinguishable, wherein the central control unit controls the image acquisition unit (9) to acquire a contrast C 'of a real-time image when a gas filling amount of each of the air bags (6) reaches a gas accommodation setting amount Vu of each of the air bags (6) during the current sampling, and determines whether to adjust an illumination intensity of the illumination unit (10) according to the contrast C' of the real-time image, wherein u=1, 2,
if C ' < C0, the central control unit judges that the illumination intensity of the illumination unit (10) is adjusted from P0 to P1, and P1=P0× (1+ln (C0/C ')/lnC ');
If C' is more than or equal to C0, the central control unit judges that the illumination intensity of the illumination unit (10) is not regulated;
wherein P0 is a preset initial value of illumination intensity.
8. The gynecological secretion sampling and detecting device according to claim 7, wherein the image acquisition unit (9) acquires the gray scale of each pixel point in the image in real time, the central control unit acquires the number N1 of the pixel points in the image with the gray scale smaller than the first preset gray scale threshold value and the number N2 of the pixel points in the image with the gray scale larger than the second preset gray scale threshold value, and judges whether the current image inner area is taken as the sampling area according to the ratio of N1 to N2,
if N1/N2 is less than or equal to 2, the central control unit judges that the area in the current image is a sampling area;
if N1/N2 is more than 2, the central control unit judges that the area in the current image is a non-sampling area.
9. The sampling test device for gynecological secretion according to claim 8, wherein the central control unit controls the image acquisition unit (9) to acquire the gray level of each pixel point in the image in real time when the pushing distance of the electric push rod (15) reaches d2 and the central control unit does not acquire the sampling area, and determines whether to take the current image area as the sampling area according to whether the pixel point with the gray level larger than the second preset gray level threshold value exists in the image,
If the pixel points with the gray level larger than the second preset gray level threshold value exist in the image, the central control unit judges that the area in the current image is used as a sampling area;
if no pixel point with the gray level larger than a second preset gray level threshold exists in the image, the central control unit judges that the area in the current image is not used as a sampling area, and the motor (14) continues to run until the pushing distance of the electric push rod (15) reaches d3;
wherein d3 is a third preset pushing distance of the electric push rod (15).
10. The gynecological secretion sampling and detecting device according to claim 9, wherein the central control unit controls the motor (14) to stop operating when acquiring the sampling area, and acquires the sampling mode of the sampling unit (7) according to the number of pixels with gray scale greater than the second preset gray scale threshold value in the image accounting for the ratio beta, wherein beta=n2/(n1+n2),
if beta is less than or equal to beta 0, the central control unit acquires the sampling mode of the sampling unit (7) as scratch, the expansion bracket (74) stretches to drive the cotton block (71) to contact with the vaginal wall, the rotary bracket (72) makes reciprocating motion in the groove by taking delta d as reciprocating displacement, and the reciprocating times n=min {2+ [2 x beta 0/beta ],10};
If beta is larger than beta 0, the central control unit acquires that the sampling mode of the sampling unit (7) is dipping, the telescopic frame (74) stretches to drive the cotton block (71) to be in contact with the vaginal wall, the rotary support (72) moves to a vaginal position point corresponding to a pixel point, in the current image, of which the gray level is larger than a second preset gray level threshold value and the nearest to the cotton block (71), and the rotary support (72) automatically rotates for one circle and retracts to a position before sampling;
wherein, beta 0 is the preset threshold value of the pixel point quantity with gray level larger than the second preset gray level threshold value, 2 is multiplied by beta 0/beta, delta d= (1- (beta 0-beta)/beta 0)/dc is multiplied by delta d, dc is the preset highest threshold value of the round trip displacement of the sampling unit (7).
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