High-speed biochemical analyzer and its cleaning station

Abstract

The application discloses a cleaning station of a high-speed biochemical analyzer, which comprises a cleaning main body and a water removing device. The cleaning main body is internally provided with a cleaning groove, and the cleaning main body is provided with an inlet and an outlet and a cleaning hole which are communicated with the cleaning groove respectively. The inlet and the outlet are used for the sample needle moving along a preset track to enter and exit the cleaning groove. The cleaning hole is used for connecting an external water source and conducting the water source to the sample needle in the cleaning groove for external cleaning. The water removing device is installed on the cleaning main body and is used for removing the liquid adhered to the outer wall of the sample needle after cleaning. The cleaning station of the high-speed biochemical analyzer is provided with the water removing device, which can remove the water on the outer wall of the sample needle after cleaning, avoids the liquid adhered to the sample needle when the sample needle leaves the cleaning station, prevents the liquid from diluting the sample to cause poor accuracy of test results, and prevents the liquid from randomly affecting the repeatability of sample analysis results to cause poor test precision. The application further discloses a high-speed biochemical analyzer applying the cleaning station, and the accuracy and stability of test results of the high-speed biochemical analyzer are higher.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a cleaning station for a high-speed biochemical analyzer, and also to a high-speed biochemical analyzer. Background Technology

[0002] The accuracy and stability of test results from high-speed biochemical analyzers are important metrics. The sample needles of high-speed biochemical analyzers are a source of contamination, and the effectiveness of sample needle cleaning directly affects the test results. Therefore, the sample needle cleaning station is a crucial component of biochemical analyzers.

[0003] Currently, the cleaning station structures used in high-speed biochemical analyzers on the market vary, but they all share a common problem: liquid remains on the outer wall of the sample needle after cleaning. This liquid dilutes the sample, especially when adding small volumes, significantly impacting the accuracy of the test results. Furthermore, the randomness of the liquid volume also affects the repeatability of the sample analysis results, thus affecting the test precision.

[0004] Therefore, how to provide a cleaning station that can avoid sample needle residue is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a cleaning station for a high-speed biochemical analyzer, which is equipped with a water removal device to remove moisture from the outer wall of the sample needle after cleaning. This prevents the sample needle from leaving the cleaning station and avoids diluting the sample, which could lead to poor accuracy of the test results. It also prevents the random amount of liquid from affecting the repeatability of the sample analysis results, thus avoiding poor test precision. The present invention also provides a high-speed biochemical analyzer using the above-mentioned cleaning station, which provides higher accuracy and stability of test results.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A cleaning station for a high-speed biochemical analyzer includes:

[0008] The cleaning body has a cleaning tank inside and an inlet and a cleaning hole that are respectively connected to the cleaning tank. The inlet and outlet are used for sample needles moving along a preset trajectory to enter and exit the cleaning tank. The cleaning hole is used to connect to an external water source and deliver the water source to the sample needles in the cleaning tank for external cleaning.

[0009] A water removal device is installed on the cleaning body and is used to remove the liquid adhering to the outer wall of the sample needle after cleaning.

[0010] Optionally, in the above-mentioned cleaning station, the water removal device is a scraper, which is installed in the cleaning tank and located between the cleaning hole and the inlet / outlet, for scraping off the liquid adhering to the outer wall of the sample needle; the scraper has a first preset angle with the vertical direction, and the upper end of the scraper gradually moves away from the cleaning hole from the lower end; or the water removal device is a jet connector for connecting to an external high-pressure air source.

[0011] Optionally, in the above-mentioned cleaning station, there are multiple scrapers arranged in groups; each group has two scrapers, which are distributed on opposite sides of the cleaning tank; in each group of scrapers, the upper part of the free ends of the two scrapers are respectively provided with notches, and the lower parts overlap each other.

[0012] Optionally, in the above-mentioned cleaning station, the inner wall of the cleaning body is provided with a cleaning hole, and the scraper is installed in the cleaning hole; the cleaning hole is used to connect to an external water source to rinse the scraper; the scraper is located in the middle of the cleaning hole and divides the opening of the cleaning hole into two parts, and the water from the two parts is used to rinse both sides of the scraper.

[0013] Optionally, in the above-mentioned cleaning station, there are two inlets and outlets, which are distributed on both sides of the cleaning hole; the water removal device is located between the cleaning hole and the first inlet and outlet.

[0014] Optionally, in the above-mentioned cleaning station, the axis of the cleaning hole has a second preset angle with the horizontal direction, and the second preset angle is 0°; or

[0015] The second preset included angle is an acute angle, and the cleaning hole gradually moves downward from the outside of the cleaning body to the inside of the cleaning body.

[0016] Optionally, in the above-mentioned cleaning station, the cleaning hole is a waist hole extending vertically; and / or there are two cleaning holes, distributed on both sides of the cleaning tank.

[0017] Optionally, in the above-mentioned cleaning station, the cleaning tank includes a first splash tank section, a needle washing tank section, and a second splash tank section connected in sequence; the cleaning hole is located on the inner wall of the needle washing tank section;

[0018] The bottom surface of the cleaning tank is inclined and gradually slopes downward from the outer periphery to the center; a drain outlet is opened at the lowest point of the bottom surface.

[0019] Optionally, in the above-mentioned cleaning station, the inlet and outlet are offset at the end of the cleaning body; the inlet and outlet and the scraper are respectively located on the preset trajectory.

[0020] A high-speed biochemical analyzer includes a cleaning station, wherein the cleaning station is any one of the cleaning stations described in the above technical solutions; the sample needle of the high-speed biochemical analyzer moves along a preset trajectory between a sampling position and a sample application position; the cleaning station is arranged on the preset trajectory and located between the sampling position and the sample application position; in the cleaning station, the dewatering device is located on the side of the cleaning port facing the sampling position.

[0021] This invention provides a cleaning station for a high-speed biochemical analyzer, comprising a cleaning body and a dewatering device; the cleaning body has a cleaning tank inside, and the cleaning body has an inlet and an outlet and a cleaning hole respectively connected to the cleaning tank; the inlet and outlet are used for sample needles moving along a preset trajectory to enter and exit the cleaning tank; the cleaning hole is used to connect to an external water source and deliver the water source to the sample needles in the cleaning tank for external cleaning; the dewatering device is installed on the cleaning body and is used to remove the liquid adhering to the outer wall of the sample needles after cleaning.

[0022] When using the cleaning station provided by this invention, the sample needle, which moves along a preset trajectory, enters the cleaning tank through the inlet and outlet and reaches the position corresponding to the cleaning hole; the cleaning hole inputs the external water source into the cleaning tank and rinses the outer wall of the sample needle; then, the cleaned sample needle continues to move along the preset trajectory and passes through the water removal device, which removes the liquid adhering to the outer wall of the sample needle; after that, the sample needle continues to move along the preset trajectory and leaves the cleaning tank through the inlet and outlet.

[0023] The cleaning station of the aforementioned high-speed biochemical analyzer is equipped with a water removal device, which can remove the liquid adhering to the outer wall of the sample needle after cleaning. This prevents the sample needle from leaving the cleaning station and avoids diluting the sample with the liquid, which could lead to poor accuracy of the test results. It also prevents the random amount of liquid from affecting the repeatability of the sample analysis results, which could result in poor test accuracy.

[0024] The present invention also provides a high-speed biochemical analyzer, which, when using the above-mentioned cleaning station, achieves higher accuracy and stability in test results. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural diagram of the first type of cleaning station provided in an embodiment of the present invention;

[0027] Figure 2 A top view of a first type of cleaning station provided in an embodiment of the present invention;

[0028] Figure 3 A cross-sectional view showing the cleaning holes in a first type of cleaning station provided in an embodiment of the present invention;

[0029] Figure 4 A cross-sectional view showing a scraper in a first type of cleaning station provided in an embodiment of the present invention;

[0030] Figure 5 A cross-sectional view of a cleaning tank in a first type of cleaning station provided in an embodiment of the present invention;

[0031] Figure 6 A three-dimensional structural diagram of the scraper provided in an embodiment of the present invention;

[0032] Figure 7 This is a three-dimensional structural diagram of the scraper provided in an embodiment of the present invention from another angle;

[0033] Figure 8 A schematic diagram illustrating the application of a first type of cleaning station provided in an embodiment of the present invention to a high-speed biochemical analyzer;

[0034] Figure 9 This is a schematic diagram of the sample needle moving from the sample application position to the sampling position along a preset trajectory and entering the first type of cleaning station, as provided in an embodiment of the present invention.

[0035] Figure 10 This is a schematic diagram of the sample needle moving from the sampling position to the sample application position along a preset trajectory and entering the first type of cleaning station, as provided in an embodiment of the present invention.

[0036] Figure 11 This is a three-dimensional structural diagram of the second type of cleaning station provided in an embodiment of the present invention;

[0037] Figure 12 This is a three-dimensional structural diagram of a third type of cleaning station provided in an embodiment of the present invention;

[0038] in, Figures 1-12 middle:

[0039] Cleaning station 100; Cleaning body 101; Inlet and outlet 11; Cleaning tank 12; First splash tank section 121; Needle washing tank section 122; Second splash tank section 123; Bottom surface 1201; Cleaning hole 1202; External cleaning connector 102; Scraper flushing connector 103; Scraper 104; Drainage connector 105; Mounting ring 106; Air jet connector 107; Sample needle 200. Detailed Implementation

[0040] This invention discloses a cleaning station for a high-speed biochemical analyzer, which is equipped with a water removal device to remove moisture from the outer wall of the sample needle after cleaning. This prevents the sample needle from leaving the cleaning station and avoids diluting the sample, which could lead to poor test results. It also prevents the random amount of liquid from affecting the repeatability of sample analysis results, thus ensuring high test accuracy. This invention also discloses a high-speed biochemical analyzer using the above-mentioned cleaning station, which provides even higher accuracy and stability in test results.

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1-12 This invention provides a cleaning station 100 for a high-speed biochemical analyzer, comprising a cleaning body 101 and a dewatering device. The cleaning body 101 has a cleaning tank 12 inside, and the cleaning body 101 has an inlet / outlet 11 and a cleaning hole 1202 respectively connected to the cleaning tank 12. The inlet / outlet 11 is used for the sample needle 200 moving along a preset trajectory to enter and exit the cleaning tank 12. The cleaning hole 1202 is used to connect to an external water source and deliver the water source to the sample needle 200 in the cleaning tank 12 for external cleaning. The dewatering device is installed on the cleaning body 101 and is used to remove the liquid adhering to the outer wall of the sample needle 200 after cleaning.

[0043] When using the cleaning station 100 provided by the present invention, the sample needle 200, moving along a preset trajectory, enters the cleaning tank 12 through the inlet and outlet 11 and reaches the position corresponding to the cleaning hole 1202; the cleaning hole 1202 inputs an external water source into the cleaning tank 12 and rinses the outer wall of the sample needle 200; then, the cleaned sample needle 200 continues to move along the preset trajectory and passes through the water removal device, which removes the liquid adhering to the outer wall of the sample needle 200; after that, the sample needle 200 continues to move along the preset trajectory and leaves the cleaning tank 12 through the inlet and outlet 11.

[0044] The cleaning station 100 of the aforementioned high-speed biochemical analyzer is equipped with a water removal device, which can remove the water from the outer wall of the sample needle 200 after cleaning, prevent the sample needle 200 from leaving the cleaning station 100 with liquid, prevent the liquid from diluting the sample and causing poor accuracy of the test results, and prevent the random amount of liquid from affecting the repeatability of the sample analysis results and causing poor test accuracy.

[0045] In some embodiments, the dehydration device is configured as a scraper 104, which is installed inside the cleaning tank 12 and located between the cleaning hole 1202 and the inlet / outlet 11, for scraping off the liquid adhering to the outer wall of the sample needle 200, such as...Figure 1 , 2 As shown in Figure 4-11.

[0046] In other embodiments, the dehydration device is configured as a jet connector 107 for connecting to an external high-pressure gas source. During application, the high-pressure gas supplied by the high-pressure gas source is injected into the cleaning tank 12 via the jet connector 107. When the cleaned sample needle 200 moves along a preset trajectory to the position corresponding to the jet connector 107, the high-pressure airflow blows off the liquid adhering to the outer wall of the sample needle 200, thereby achieving the effect of removing moisture from the outer wall of the sample needle 200.

[0047] In the scheme where the dewatering device is set as a jet nozzle 107, there may be one or more jet nozzles 107. In order to avoid interference between the airflows emitted by multiple jet nozzles 107, each jet nozzle 107 is arranged on the same side of the cleaning tank 12.

[0048] In the scheme where the water removal device is a scraper 104, the scraper 104 is preferably configured to have a first preset angle with the vertical direction, and the upper end of the scraper 104 gradually moves away from the cleaning hole 1202 from the lower end, such as... Figure 5 , 9 As shown in Figures 10 and 11.

[0049] Furthermore, multiple scrapers 104 are configured and arranged in groups; each group contains two scrapers 104, which are distributed on opposite sides within the cleaning tank 12. In each group of scrapers 104, the upper part of the free ends of the two scrapers 104 are respectively provided with notches, and the lower parts overlap each other, such as... Figure 1 As shown. The end of the scraper 104 that is connected to the cleaning body 104 is the mounting end, and the end opposite to the mounting end is the free end.

[0050] In the cleaning station 100 provided in this embodiment, the scraper 104 forms a first preset angle with the vertical, and the upper part of the free end of the two scrapers 104 in the group is open and the lower part overlaps, which is conducive to scraping off the liquid at the tip of the sample needle 200, improving the effect of scraping off the liquid, and at the same time helping to protect the needle tip from damage.

[0051] The inner wall of the cleaning body 101 has a cleaning hole, and a scraper 104 is installed in the cleaning hole. The cleaning hole is used to connect to an external water source to rinse the scraper 104. In application, if the sample needle 200 leaves the cleaning station 100 after the sample is scraped off the liquid by the scraper 104, the water source enters the cleaning tank 12 through the cleaning hole and rinses the scraper 104, which helps to avoid poor contamination.

[0052] To improve the cleaning effect of the scraper 104, the scraper 104 is positioned in the center of the cleaning hole, and the opening of the cleaning hole is divided into two parts (specifically, two semi-circular parts). During application, water flows out through the two parts of the cleaning hole opening and rinses both sides of the scraper 104.

[0053] The scraper 104 can be made of silicone material. For easy installation, the scraper 104 can be fixed to the mounting ring 106, which snaps into the inclined hole.

[0054] The cleaning body 101 has two inlets and outlets 11, which are distributed on both sides of the cleaning hole 1202. The water removal device is located between the cleaning hole 1202 and the first inlet and outlet. The first inlet and outlet are located on the side of the cleaning hole 1202 facing the sampling position, ensuring that the sample needle 200 is externally cleaned in sequence before sampling to remove the liquid adhering to the outer wall of the sample needle 200.

[0055] The cleaning body 102 is equipped with an external cleaning connector 102 that communicates with the cleaning hole 1202, and the external cleaning connector 102 is used to connect to an external water source. The cleaning body 102 is also equipped with a scraper flushing connector 103 that communicates with the cleaning hole, and the scraper flushing connector 103 is used to connect to an external water source.

[0056] In the aforementioned cleaning station 100, the axis of the cleaning hole 1202 has a second preset angle with the horizontal direction. The second preset angle can be set to 0°, such as... Figure 11 As shown, at this time, the water source is directly directed at the sample needle 200.

[0057] The second preset included angle can also be set to an acute angle, and the direction of the cleaning hole 1202 from the outside of the cleaning body 101 to the inside of the cleaning body 101 gradually downwards. In the solution provided in this embodiment, the water flowing through the cleaning hole 1202 is in a downward oblique state, with a downward rinsing speed, which is conducive to improving the cleaning effect of the outer wall of the sample needle 200; at the same time, after the external cleaning is completed, the liquid adhering to the outer wall of the sample needle 200 will also gain a downward speed, which is very likely to detach from the needle tip and drip to the bottom of the cleaning tank 12.

[0058] The cleaning hole 1202 can be set as a round hole, preferably as a waist hole extending vertically, so as to lengthen the water outlet length, increase the contact length between the water column and the sample needle 200, and lengthen the cleaning range of the sample needle.

[0059] Two cleaning holes 1202 are provided and distributed on both sides of the cleaning tank 12, which are used to clean the sample needles 200 from both sides at the same time, which is beneficial to improving the cleaning effect.

[0060] The cleaning tank 12 may be configured to include a first splashing tank section 121, a needle washing tank section 122, and a second splashing tank section 123 connected in sequence; the cleaning hole 1202 is located on the inner wall of the needle washing tank section 122. The two inlets and outlets 11 are respectively connected to the two splashing tank sections, and the scraper 104 is disposed in one of the splashing tank sections.

[0061] In the solution provided in this embodiment, the splash tank section can receive the splash liquid when cleaning the sample needle 200 and the splash liquid when cleaning the scraper 104, so as to prevent the splash liquid from flying out of the cleaning body 101 and polluting the on-site environment.

[0062] The bottom surface 1201 of the cleaning tank 12 is preferably inclined, and the bottom surface 1201 gradually slopes downward from the outer periphery to the center. A drain outlet is opened at the lowest point of the bottom surface 1201 to facilitate the rapid discharge of cleaning waste liquid and avoid waste liquid retention. The cleaning body 101 is equipped with a drain connector 105 that communicates with the drain outlet.

[0063] This invention also provides a high-speed biochemical analyzer, including a cleaning station 100, which is the cleaning station 100 provided in the above embodiments.

[0064] The sample needle 200 of the high-speed biochemical analyzer moves along a preset trajectory between the sampling position and the sample application position. The preset trajectory is arc-shaped. The cleaning station 100 is arranged on the preset trajectory and is located between the sampling position and the sample application position. In the cleaning station 100, the water removal device is located on the side of the cleaning hole 1202 facing the sampling position.

[0065] The cleaning body 101 in the cleaning station has a cuboid structure. The inlet and outlet 11 are offset at the ends of the cleaning body 101. That is, the first direction is from one end of the cleaning body 101 where the inlet and outlet are located to the opposite end. The inlet and outlet 11 are offset from the center of the cleaning body 101 in a direction perpendicular to the first direction to ensure that the sample needle 200 can pass through the inlet and outlet 11 when it moves along the preset trajectory. Specifically, the inlet and outlet 11 and the scraper 104 of the cleaning station 100 are located on the preset trajectory.

[0066] After the sample needle 200 is applied at the sample application position, it rises to the first height and then moves along a preset trajectory into the cleaning station 100. At this time, the sample needle 200 extends to a greater depth L1 into the cleaning tank 12. The sample needle 200 does not need to perform any additional descent action and can be directly cleaned by the water source provided by the cleaning hole 1202, saving the time of the sample needle 200 moving up and down. After cleaning, the sample needle 200 passes through the dewatering device. If the dewatering device is set as a scraper 104, the sample needle 200 first reaches the opening above the two scrapers 104 and then continues to rotate. The overlapping part of the two scrapers 104 in the scraper group is separated, and at the same time, the scraper 104 scrapes off the liquid on the outer wall of the sample needle 200. After that, the sample needle 200 leaves the scraper 104, the scraper 104 returns to its original state, and water flows out from the scraper flushing joint 103 and flushes the corresponding scraper 104 on both sides to prevent the sample needle 200 from being contaminated when it passes by again.

[0067] After leaving the rinsing station 100, the sample needle 200 continues to move along the preset trajectory to the sampling position. After sampling, the sample needle 200 rises to the second height (the second height is higher than the first height), and then rotates directly to the sample application position. During this process, when passing through the rinsing station 100, the insertion L2 of the sample needle 200 into the rinsing tank 12 is relatively small, so that the sample needle 200 will avoid the scraper 104 and directly reach the sample application position. At this time, the angle between the two scrapers 104 will not prevent the sample needle 200 from passing smoothly when it reaches the scraper 104. At the same time, the height of the sample needle 200 can also effectively prevent the outer wall liquid of the sample needle 200 from contaminating the scraper 104 after sampling.

[0068] The high-speed biochemical analyzer provided in this embodiment utilizes the cleaning station 100 provided in the above embodiment, resulting in higher accuracy and stability of the test results. Furthermore, the high-speed biochemical analyzer provided in this embodiment has high cleaning efficiency for the sample needle 200, achieving the desired cleaning effect while effectively solving the problem of post-cleaning residue in situations with limited time. Of course, the high-speed biochemical analyzer provided in this embodiment also possesses other effects related to the cleaning station 100 provided in the above embodiments, which will not be elaborated upon here.

[0069] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0070] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cleaning station for a high-speed biochemical analyzer, characterized in that, include: The cleaning body has a cleaning tank inside and an inlet and a cleaning hole that are respectively connected to the cleaning tank. The inlet and outlet are used for sample needles moving along a preset trajectory to enter and exit the cleaning tank. The cleaning hole is used to connect to an external water source and deliver the water source to the sample needles in the cleaning tank for external cleaning. A water removal device is installed on the cleaning body and is used to remove the liquid adhering to the outer wall of the sample needle after cleaning. The water removal device is a scraper, which is installed in the cleaning tank and located between the cleaning hole and the inlet / outlet, for scraping off the liquid adhering to the outer wall of the sample needle; the scraper has a first preset angle with the vertical direction, and the upper end of the scraper gradually moves away from the cleaning hole from the lower end; The scrapers are multiple and arranged in groups; each group contains two scrapers, which are distributed on opposite sides of the cleaning tank; in each group of scrapers, the upper part of the free ends of the two scrapers are notched and the lower part overlaps each other. The inner wall of the cleaning body has a cleaning hole, and the scraper is installed in the cleaning hole; the cleaning hole is used to connect to an external water source to rinse the scraper.

2. The cleaning station according to claim 1, characterized in that, The scraper is located in the middle of the cleaning hole and divides the opening of the cleaning hole into two parts, and the water from the two parts is used to rinse both sides of the scraper.

3. The cleaning station according to claim 1, characterized in that, There are two inlets and outlets, which are located on both sides of the cleaning hole; the water removal device is located between the cleaning hole and the first inlet and outlet.

4. The cleaning station according to claim 1, characterized in that, The axis of the cleaning hole has a second preset angle with the horizontal direction, and the second preset angle is 0°; or The second preset included angle is an acute angle, and the cleaning hole gradually moves downward from the outside of the cleaning body to the inside of the cleaning body.

5. The cleaning station according to claim 1 or 4, characterized in that, The cleaning hole is a waist-shaped hole extending vertically; and / or there are two cleaning holes, distributed on both sides of the cleaning tank.

6. The cleaning station according to claim 1, characterized in that, The cleaning tank includes a first splashing tank section, a needle washing tank section, and a second splashing tank section connected in sequence; the cleaning hole is located on the inner wall of the needle washing tank section. The bottom surface of the cleaning tank is inclined and gradually slopes downward from the outer periphery to the center; a drain outlet is opened at the lowest point of the bottom surface.

7. The cleaning station according to claim 2, characterized in that, The inlet and outlet are offset at the end of the cleaning body; the inlet and outlet and the scraper are respectively located on the preset trajectory.

8. A high-speed biochemical analyzer, comprising a cleaning station, characterized in that, The cleaning station is the cleaning station described in any one of claims 1-7; The sample needle of the high-speed biochemical analyzer moves along a preset trajectory between the sampling position and the sample application position; the cleaning station is arranged on the preset trajectory and located between the sampling position and the sample application position; in the cleaning station, the water removal device is located on the side of the cleaning hole facing the sampling position.

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