Cat litter quality detection method and system based on intelligent sensor

Abstract

The invention relates to the technical field of quality detection, in particular to a cat litter quality detection method and system based on an intelligent sensor. Spraying water into the cat litter for the simulation test at a standard spraying height by using standard spraying pressure according to a standard spraying interval so as to perform a water absorption simulation test on the cat litter for the simulation test, determining an actual spraying pressure of an actual water absorption test according to an area proportion of the caking area, and determining an actual spraying interval according to the maximum height of the caking, the actual spraying height of water is determined according to the air humidity above the test disc, the evaluation value of the water absorption rate of the cat litter is determined according to the initial quality, the final quality and the air humidity above the test disc, the accuracy of cat litter quality evaluation with the high water absorption requirement is met, and the accuracy of cat litter quality evaluation is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of quality detection, and in particular to a cat litter quality detection method and system. Background Art

[0002] Different brands and types of cat litter may differ in water absorption, so when choosing cat litter, you can test and compare according to your needs and actual usage. In institutions with many cats, cats urinate a lot and need to keep the litter box environment dry. Especially in some commercial places or medical institutions that need to keep the litter box environment dry, the water absorption requirements for cat litter are very high. How to solve the problem of low accuracy in the assessment of cat litter water absorption quality becomes very important.

[0003] Prior art patent number CN218823701 U discloses a cat litter clumping detector, including a detection base, a detection chassis is arranged on the inner side of the upper part of the detection base, a support base is connected to the top of the detection base, a telescopic rod is connected to the other end of the support base connected to the detection base, a fixed plate is connected to the front end of the fixed plate, a connecting cross plate is connected to the other end of the connecting cross plate not connected to the fixed plate is connected to a release box, a box body groove is arranged on the inner side of the release box, a bottom plate is connected to the lower bottom surface of the release box, an electromagnet is inlaid on the lower inner side of the release box, a bracket plate is connected to the top of the detection base, a stabilizing frame is connected to the top of the bracket plate, a camera is connected to the end of the stabilizing frame close to the detection chassis, a partition is connected to the top of the detection base, and a control component is connected to the left end of the detection base. However, the invention does not involve the problem of the accuracy of cat litter water absorption quality assessment. Summary of the invention

[0004] To this end, the present invention provides a cat litter quality detection method and system based on an intelligent sensor, so as to overcome the problem of low accuracy of water absorption rate test in the cat litter quality detection method in the prior art.

[0005] To achieve the above object, the present invention provides a cat litter quality detection method based on an intelligent sensor, comprising:

[0006] Place simulated test cat litter into the test tray;

[0007] Spraying water into the simulated test cat litter at a standard spraying interval, a standard spraying height and a standard spraying pressure to perform a water absorption simulation test on the simulated test cat litter;

[0008] An image sensor is used to monitor in real time the area occupied by the protruding plane of the cat litter clumps and the total plane area of ​​the test plate to obtain the proportion of the clump area;

[0009] Determine the actual spraying pressure for the actual water absorption test according to the agglomeration area ratio;

[0010] The actual spraying interval is determined according to the maximum height of the agglomerate;

[0011] Putting actual test cat litter into a test tray, and using an electronic scale to measure the initial mass of the actual test cat litter;

[0012] Collecting the air humidity above the test tray, and determining the actual water spraying height according to the air humidity above the test tray;

[0013] spraying water on the actual test cat litter at the actual spraying height using the actual spraying pressure according to the actual spraying interval to perform an actual water absorption test;

[0014] The actual test cat litter after absorbing water is sampled and dried in sequence to obtain the final mass of the actual test cat litter after absorbing water;

[0015] Determine the cat litter water absorption evaluation value according to the initial mass, the final mass and the air humidity above the test tray;

[0016] The cat litter used in the simulation test and the cat litter used in the actual test are of the same type and quality.

[0017] Furthermore, the formula used for the cat litter water absorption evaluation value is,

[0018]

[0019] Among them, δ is the evaluation value of cat litter water absorption, M is the final mass of cat litter, m is the initial mass of cat litter, f is the air humidity above the test plate, and ρ is the mass of water in the air absorbed by cat litter at unit air humidity.

[0020] Further, determining the actual spraying height of water according to the air humidity above the test plate includes:

[0021] The air humidity above the test plate is compared with the preset air humidity,

[0022] If the air humidity above the test plate is greater than the preset air humidity, the height of the nozzle is lowered.

[0023] Further, determining the actual spraying pressure of the actual water absorption test according to the agglomeration area ratio includes:

[0024] The agglomeration area ratio is compared with the preset agglomeration area ratio,

[0025] If the agglomeration area ratio is greater than the preset agglomeration area ratio, the spraying pressure is adjusted.

[0026] Further, determining the actual spraying interval according to the maximum height of the agglomerate includes:

[0027] Collecting the maximum height of the agglomerate;

[0028] Comparing the height of the agglomerate with a preset agglomerate height;

[0029] If the height of the agglomerate is greater than the preset agglomerate height, the spraying interval is enlarged.

[0030] Furthermore, the reduction range of the height of the nozzle is determined according to the difference between the air humidity and a preset air humidity.

[0031] Furthermore, the adjustment range of the spraying pressure of the nozzle is determined according to the difference between the agglomeration area ratio and a preset agglomeration area ratio.

[0032] Furthermore, the expansion range of the spraying interval of the nozzle is determined according to the difference between the height of the agglomerate and a preset agglomerate height.

[0033] Furthermore, if the cat litter water absorption evaluation value is greater than a preset water absorption evaluation value, the cat litter in the test tray is replaced and retested.

[0034] The present invention also provides a cat litter quality detection system based on an intelligent sensor, comprising:

[0035] A spraying unit, for spraying water on the surface of the cat litter in the test tray, comprising a spray head for spraying water and an upper and lower telescopic assembly connected to the spray head for adjusting the vertical height of the spray head;

[0036] An inspection unit connected to the spraying unit includes an image sensor for collecting the agglomeration area of ​​the cat litter, a displacement sensor for detecting the agglomeration height, an electronic scale for respectively detecting the initial mass and the final mass of the cat litter, and a humidity sensor disposed above the test tray for collecting the air humidity above the test tray;

[0037] A control unit is connected to the spraying unit and the inspection unit, respectively, and is used to determine the actual spraying height of water according to the air humidity above the test tray, determine the actual spraying pressure according to the proportion of the agglomeration area, determine the actual spraying interval according to the height of the agglomeration, and determine the water absorption evaluation value of the cat litter according to the initial mass and final mass of the cat litter and the air humidity above the test tray.

[0038] Compared with the prior art, the beneficial effects of the present invention are that the present invention provides a cat litter quality detection method, which can accurately determine the test parameters of the cat litter water absorption test through a cat litter water absorption simulation test, can accurately determine the actual spraying pressure of the actual water absorption test through the proportion of the agglomeration area, and reduce the occurrence of inaccurate testing due to the spraying pressure, can accurately determine the actual spraying interval through the maximum height of the agglomeration, can accurately determine the actual spraying height of water through the air humidity above the test plate, and reduce the occurrence of water absorption test deviation due to air humidity, and can accurately determine the cat litter water absorption evaluation value through the initial mass, the final mass and the air humidity above the test plate, which meets the accuracy of cat litter quality assessment with high water absorption requirements in medical institutions and improves the accuracy of cat litter quality assessment.

[0039] Furthermore, the present invention can accurately determine the actual spraying height of water during the water absorption rate detection process through air humidity, and can improve the accuracy of water absorption rate detection by lowering the corresponding spraying height. When the air humidity is greater than the preset air humidity, the accuracy of the cat litter quality detection method is improved by lowering the height of the nozzle.

[0040] Furthermore, the present invention can accurately determine the actual spraying pressure by obtaining the clumping area ratio of the cat litter, and can improve the accuracy of water absorption rate detection by adjusting the spraying pressure. When the clumping area ratio is greater than the preset clumping area ratio, the accuracy of water absorption rate detection is improved by adjusting the spraying pressure.

[0041] Furthermore, the present invention can accurately determine the spraying interval according to the height of the cat litter lumps, and can improve the accuracy of water absorption rate detection by expanding the spraying interval. When the height of the lumps is greater than the preset lumps height, the cat litter can have more time to absorb water by expanding the spraying interval, thereby more comprehensively evaluating the water absorption performance of the cat litter quality assessment.

[0042] Furthermore, the present invention can accurately lower the height of the nozzle according to the difference between the air humidity and the preset air humidity. By lowering the height of the nozzle, the deviation caused by the air humidity can be reduced, thereby further improving the accuracy of the water absorption performance of the cat litter quality assessment.

[0043] Furthermore, the present invention reduces the deviation caused by air humidity by lowering the height of the nozzle, overcomes the occurrence of misjudgment of the water absorption performance of cat litter caused by the spraying height, and improves the accuracy of the method for evaluating the water absorption quality of cat litter.

[0044] Furthermore, the present invention reduces the occurrence of uneven surfaces of cat litter sprayed due to water pressure by adjusting the spraying pressure, thereby improving the accuracy of cat litter quality assessment.

[0045] Furthermore, the present invention can accurately simulate the water absorption interval of cat litter by expanding the spraying interval, so as to more comprehensively evaluate its water absorption performance. Moreover, in actual use of cat litter, cat litter will not be frequently sprayed with a large amount of water. Therefore, expanding the spraying detection can be closer to the actual use of cat litter, further improving the accuracy of cat litter quality assessment. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 The present invention is an overall flow chart of a method for detecting cat litter quality based on an intelligent sensor according to an embodiment of the present invention;

[0047] Figure 2 A flow chart of determining the actual spraying pressure of a cat litter quality detection method based on an intelligent sensor according to an embodiment of the present invention;

[0048] Figure 3 The present invention is a block diagram of a cat litter quality detection system based on an intelligent sensor according to an embodiment of the present invention;

[0049] Figure 4 The present invention is a schematic structural diagram of a cat litter quality detection system based on an intelligent sensor according to an embodiment of the present invention;

[0050] Among them, 1 is an electronic scale, 2 is a test plate, 3 is an upper and lower telescopic component, 4 is an image sensor, 5 is a humidity sensor, and 6 is a nozzle. DETAILED DESCRIPTION

[0051] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0052] The 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 only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0053] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In addition, it should be noted that in the description of the present invention, it should also be noted that the data in this embodiment are obtained by comprehensive analysis and evaluation of the historical test data and the corresponding historical test results of the system of the present invention in the three months before this test. The system of the present invention comprehensively determines the values ​​of the preset parameter benchmarks for this test based on the results of the cumulative tests in the previous three months before this test. It can be understood by those skilled in the art that the determination method of the system of the present invention for a single item of the above parameters can be to select the value with the highest proportion as the preset benchmark parameter according to the data distribution, use weighted summation to use the obtained value as the preset benchmark, use the value of each historical data as the preset benchmark parameter or other selection methods, as long as the system of the present invention can clearly define the different specific situations in the single determination process through the obtained values.

[0055] See also Figure 1 As shown, it is an overall flow chart of a cat litter quality detection method based on an intelligent sensor according to an embodiment of the present invention; the present invention provides a cat litter quality detection method based on an intelligent sensor, comprising:

[0056] Step S1, placing cat litter for simulation test into a test tray;

[0057] Step S2, spraying water into the simulated test cat litter at a standard spraying interval, a standard spraying height and a standard spraying pressure to perform a water absorption simulation test on the simulated test cat litter;

[0058] Step S3, using an image sensor to monitor in real time the area occupied by the protruding plane of the cat litter lumps and the total plane area of ​​the test plate to obtain the proportion of the lumps area;

[0059] Step S4, determining the actual spraying pressure of the actual water absorption test according to the agglomeration area ratio;

[0060] Step S5, determining the actual spraying interval according to the maximum height of the agglomerate;

[0061] Step S6, placing the actual test cat litter into the test tray, and using an electronic scale to detect the initial mass of the actual test cat litter;

[0062] Step S7, collecting the air humidity above the test plate, and determining the actual water spraying height according to the air humidity above the test plate;

[0063] Step S8, spraying water on the actual test cat litter at the actual spraying height using the actual spraying pressure according to the actual spraying interval to perform an actual test of water absorption rate;

[0064] Step S9, sampling and drying the actual test cat litter after absorbing water in sequence to obtain the final mass of the actual test cat litter after absorbing water;

[0065] Step S10, sampling and drying the actual test cat litter after absorbing water in sequence to obtain the final mass of the actual test cat litter after absorbing water.

[0066] The cat litter used in the simulation test and the cat litter used in the actual test are of the same type and quality.

[0067] In the implementation, first, an electronic scale is used to detect the initial mass of the cat litter placed in the test tray; the air humidity at several points in the test area is collected to obtain the air humidity above the test tray; the actual spraying height of water in the water absorption rate detection process is determined according to the air humidity; water is sprayed into the cat litter according to the corresponding spraying height to test the water absorption rate of the cat litter; then, an image sensor is used to monitor the plane area occupied by the clumps of cat litter and the total plane area of ​​the test tray in real time to obtain the proportion of the clump area; the actual spraying pressure is determined according to the proportion of the clump area; the spraying interval is determined according to the height of the clump; finally, the cat litter after water absorption is sampled and dried according to the determined sampling density to obtain the final mass of the cat litter after water absorption; the cat litter water absorption rate evaluation value is calculated according to the initial mass, the final mass and the air humidity sensor, which meets the accuracy of the cat litter quality assessment with high water absorption requirements in medical institutions and improves the accuracy of the cat litter quality detection method.

[0068] Specifically, the formula used for the cat litter water absorption evaluation value is,

[0069]

[0070] Among them, δ is the evaluation value of cat litter water absorption, M is the final mass of cat litter, unit is g, m is the initial mass of cat litter, unit is g, f is the air humidity, unit is 1, ρ is the coefficient of cat litter absorbing moisture in the air at the specified air humidity, unit is g.

[0071] In practice, ρ is 40 g;

[0072] In Example 1, the final mass of cat litter is 100g, the initial mass of cat litter is 60g, the air humidity is 70%, and the calculated cat litter water absorption evaluation value is (100-60-70%×40) / 60=20%;

[0073] In Example 2, the final mass of cat litter is 95, the initial mass of cat litter is 60, and the air humidity is 70%, and (95-60-70%×40) / 60=11.6% is calculated.

[0074] The smaller the cat litter water absorption evaluation value is, the more accurate the quality assessment is. The present invention can use the cat litter water absorption evaluation value as a basis for determining the accuracy of cat litter water absorption quality assessment, and is suitable for quality assessment of water absorption of cat litters of different brands, types and qualities, and is particularly suitable for cat litter boxes used by multiple cats, as well as in commercial places or medical institutions, and is suitable for quality assessment of places with high requirements for cat litter water absorption.

[0075] Specifically, determining the actual spraying height of water according to the air humidity above the test plate includes:

[0076] Comparing the air humidity above the test plate with a preset air humidity;

[0077] If the air humidity above the test plate is greater than a preset air humidity, lowering the vertical height of the nozzle;

[0078] If the air humidity is less than or equal to the preset air humidity, continue detecting.

[0079] Specifically, in practice, due to air humidity, moisture in the air is brought into the cat litter by the sprayed water during the spraying process, thereby causing the accuracy of water absorption rate detection to decrease. The present invention overcomes the problem of low accuracy of water absorption rate detection caused by air humidity by lowering the height of the nozzle.

[0080] Among them, the air humidity is the average value of the air humidity at several points, and the preset air humidity is 65%. The present invention can accurately determine the actual spraying height of spraying water in the water absorption rate detection process through the air humidity, and can improve the accuracy of water absorption rate detection by lowering the corresponding spraying height. When the air humidity is greater than the preset air humidity, the accuracy of the cat litter quality detection method is improved by lowering the height of the nozzle.

[0081] See also Figure 2 As shown, it is a determination flow chart of determining the actual spraying pressure of the cat litter quality detection method based on the intelligent sensor according to an embodiment of the present invention. The actual spraying pressure of the actual test of water absorption rate is determined according to the proportion of the agglomeration area, including:

[0082] The agglomeration area ratio is compared with the preset agglomeration area ratio,

[0083] If the agglomeration area ratio is greater than the preset agglomeration area ratio, adjusting the spraying pressure;

[0084] If the agglomeration area ratio is less than or equal to the preset agglomeration area ratio, continue the detection.

[0085] In implementation, the agglomeration area ratio is the ratio of the plane area occupied by the agglomerates of the cat litter to the total plane area of ​​the cat litter in the test tray. The preset agglomeration area ratio is 10%. The present invention can accurately determine the actual spraying pressure by obtaining the agglomeration area ratio of the cat litter, and can improve the accuracy of water absorption rate detection by adjusting the spraying pressure. When the agglomeration area ratio is greater than the preset agglomeration area ratio, the accuracy of water absorption rate detection is improved by adjusting the spraying pressure.

[0086] Specifically, the present invention determines the actual spraying interval according to the maximum height of the agglomerate, including:

[0087] Collecting the maximum height of the agglomerate;

[0088] Comparing the height of the agglomerate with a preset agglomerate height;

[0089] If the height of the agglomerate is less than or equal to the preset agglomerate height, continue the detection.

[0090] The height of the agglomeration is the maximum height of the cat litter agglomeration protruding from the horizontal plane of the test plate;

[0091] In practice, the preset agglomeration height is 1 cm. The present invention can accurately reduce the height of the nozzle through the difference between the air humidity and the preset air humidity. By reducing the height of the nozzle, the deviation caused by the air humidity can be reduced, thereby further improving the accuracy of the water absorption performance of the cat litter quality assessment.

[0092] Specifically, the reduction range of the height of the nozzle is determined according to the difference between the air humidity and the preset air humidity. The process of reducing the height of the nozzle includes:

[0093] The difference between the air humidity and the preset air humidity is compared with the preset air humidity difference,

[0094] The height of the nozzle is adjusted according to the difference between the air humidity and the preset air humidity.

[0095] Wherein, if the difference between the air humidity and the preset air humidity is less than or equal to the preset air humidity difference, the height of the nozzle is adjusted using the first height adjustment coefficient;

[0096] If the difference between the air humidity and the preset air humidity is greater than the preset air humidity difference, the height of the nozzle is adjusted using a second height adjustment coefficient;

[0097] In practice, the air humidity range is [60%, 80%], the preset air humidity is 65%, the preset air humidity difference range is [-5%, 15%], the preset air humidity difference is 8%, and the nozzle height adjustment formula is H = h × α n,H is the height of the nozzle after adjustment, h is the height of the nozzle before adjustment, where the preset height of the nozzle is 10cm, α n is the nth height adjustment coefficient, wherein α1=0.95; α2=0.85; that is, when the preset air humidity difference is 11%, the height of the nozzle after lowering the height is H=h×α2=10×0.85=8.5cm, that is, the height of the nozzle after lowering the height is 8.5cm.

[0098] Specifically, the adjustment range of the spraying pressure of the nozzle is determined according to the difference between the agglomeration area ratio and the preset agglomeration area ratio, and the process of adjusting the spraying pressure includes:

[0099] The difference between the agglomeration area ratio and the preset agglomeration area ratio is compared with the preset agglomeration area difference,

[0100] The spraying pressure is adjusted according to the difference between the agglomeration area ratio and the preset agglomeration area.

[0101] If the difference between the agglomeration area ratio and the preset agglomeration area ratio is less than or equal to the preset agglomeration area ratio difference, the spraying pressure of the nozzle is adjusted using the first pressure adjustment coefficient;

[0102] If the difference between the agglomeration area ratio and the preset agglomeration area ratio is greater than the preset agglomeration area ratio difference, the spraying pressure of the nozzle is adjusted using the second pressure adjustment coefficient;

[0103] In the implementation, the agglomeration area ratio range is [5%, 20%], the preset agglomeration area ratio is 10%, the difference between the agglomeration area ratio and the preset agglomeration area ratio range is [-5%, 10%], the preset agglomeration area ratio difference is 5%, and the spray pressure adjustment formula of the nozzle is G = g × (1 + β n ) / 2, G is the spraying pressure after adjustment, g is the spraying pressure before adjustment, where the spraying pressure before adjustment is 0.5MPa, β n is the nth pressure adjustment coefficient, wherein β1=0.9; β2=0.6; that is, when the agglomeration area accounts for 18%, the difference between the agglomeration area accounts for 18% and the preset agglomeration area accounts for 8%, and the adjusted spraying pressure is G=g×β2=0.5×(1+0.6) / 2=0.4MPa, that is, the spraying pressure of the nozzle after adjustment is 0.4MPa.

[0104] Specifically, the expansion range of the spraying interval of the nozzle is determined according to the difference between the height of the agglomerate and the preset agglomerate height, and the process of expanding the spraying interval includes:

[0105] The difference between the height of the agglomerate and the preset agglomerate height is compared with the preset agglomerate height difference,

[0106] The spraying interval is adjusted according to the difference between the height of the agglomerate and the preset agglomerate area.

[0107] Wherein, if the difference between the height of the agglomerate and the preset agglomerate height is less than or equal to the preset agglomerate height difference, the spraying interval is expanded to a corresponding value using the first interval adjustment coefficient;

[0108] If the difference between the height of the agglomerate and the preset agglomerate height is greater than the preset agglomerate height difference, the spraying interval is expanded to a corresponding value using a second interval adjustment coefficient;

[0109] In the implementation, the cat litter diameter is 5mm, the range of the height of the agglomerate is [0.5cm, 2.5cm], the preset agglomerate height is 1cm, the difference between the height of the agglomerate and the preset agglomerate height is [0.5cm, 1.5cm], the preset agglomerate height difference is 1.2cm, wherein the adjustment formula used to expand the spraying interval is T = t × (2 + γ n ) / 3, T is the spraying interval after adjustment, t is the spraying interval before adjustment, where the spraying interval before adjustment is 1 minute, γ n is the nth interval adjustment coefficient, wherein γ1=1.3; γ2=1.6; that is, when the height of the agglomerate is 2.0 cm, the difference between the height of the agglomerate and the height of the better agglomerate is 1.2 cm, and the adjusted spraying interval T=t×(2+γ1) / 3=1×1.3=1.3 minutes, that is, the time interval of a single spraying after the spraying interval is expanded is 1.3 minutes.

[0110] Specifically, the calibration process based on the cat litter water absorption evaluation value includes:

[0111] Compare the cat litter water absorption evaluation value with the preset water absorption evaluation value.

[0112] If the cat litter water absorption evaluation value is greater than the preset water absorption evaluation value, the cat litter in the test tray is replaced and retested;

[0113] If the cat litter water absorption evaluation value is less than or equal to the preset water absorption evaluation value, continue testing.

[0114] Among them, the cat litter water absorption evaluation value range is [11.6%, 20%], and the preset water absorption evaluation value is 15%.

[0115] Please continue reading Figure 3 and Figure 4 As shown, they are respectively a structural block diagram of a cat litter quality detection system based on an intelligent sensor according to an embodiment of the present invention and a structural schematic diagram of a cat litter quality detection system based on an intelligent sensor according to an embodiment of the present invention; the present invention provides a cat litter quality detection system based on an intelligent sensor, comprising:

[0116] A spraying unit, for spraying water on the surface of the cat litter in the test tray 2, comprising a spray head 6 for spraying water and an upper and lower telescopic assembly 3 connected to the spray head 6 for adjusting the vertical height of the spray head;

[0117] An inspection unit connected to the spraying unit includes an image sensor 4 for collecting the agglomeration area of ​​the cat litter, a displacement sensor 7 for detecting the agglomeration height, an electronic scale 1 for respectively detecting the initial mass and the final mass of the cat litter, and a humidity sensor 5 arranged above the test tray for collecting the air humidity above the test tray;

[0118] A control unit is connected to the spraying unit and the inspection unit, respectively, and is used to determine the actual spraying height of water according to the air humidity above the test tray, determine the actual spraying pressure according to the proportion of the agglomeration area, determine the actual spraying interval according to the height of the agglomeration, and determine the water absorption evaluation value of the cat litter according to the initial mass and final mass of the cat litter and the air humidity above the test tray.

[0119] Specifically, the displacement sensor 7 is a laser displacement sensor.

[0120] Specifically, the principle of detecting the height of the lump by means of a displacement sensor is to calculate the height of the lump based on the distance between the displacement sensor and the highest point of the lump and the vertical distance between the displacement sensor and the plane of the cat litter. Those skilled in the art can understand that the process of calculating the height of the lump based on the detection results of the displacement sensor is a conventional technical means well known to those skilled in the art, and therefore the calculation process of the height of the lump will not be repeated here.

[0121] Specifically, the upper and lower telescopic components are electric telescopic rods, and the vertical height of the nozzle is adjusted by the electric telescopic rods.

[0122] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0123] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cat litter quality detection method based on intelligent sensor, characterized in that, include: Place simulated test cat litter into the test tray; Spraying water into the simulated test cat litter at a standard spraying interval, a standard spraying height and a standard spraying pressure to perform a water absorption simulation test on the simulated test cat litter; An image sensor is used to monitor in real time the area occupied by the protruding plane of the cat litter clumps and the total plane area of ​​the test plate to obtain the proportion of the clump area; Determine the actual spraying pressure for the actual water absorption test according to the agglomeration area ratio; Determine the actual spraying interval based on the maximum height of the agglomerate; Putting actual test cat litter into a test tray, and using an electronic scale to measure the initial mass of the actual test cat litter; Collecting the air humidity above the test tray, and determining the actual water spraying height according to the air humidity above the test tray; spraying water on the actual test cat litter at the actual spraying height using the actual spraying pressure according to the actual spraying interval to perform an actual water absorption test; The actual test cat litter after absorbing water is sampled and dried in sequence to obtain the final mass of the actual test cat litter after absorbing water; The actual test cat litter after absorbing water is sampled and dried in sequence to obtain the final mass of the actual test cat litter after absorbing water; The cat litter used in the simulation test and the cat litter used in the actual test are of the same type and quality.

2. The cat litter quality detection method based on intelligent sensor according to claim 1, characterized in that, The formula for the cat litter water absorption evaluation value is: Among them, δ is the evaluation value of cat litter water absorption, M is the final mass of cat litter, m is the initial mass of cat litter, f is the air humidity above the test plate, and ρ is the mass of water in the air absorbed by cat litter at unit air humidity.

3. The cat litter quality detection method based on intelligent sensor according to claim 2, characterized in that, Determining the actual spray height of water based on the air humidity above the test plate includes: Comparing the air humidity above the test plate with a preset air humidity; If the air humidity above the test plate is greater than the preset air humidity, the vertical height of the spray head is lowered.

4. The cat litter quality detection method based on intelligent sensor according to claim 3, characterized in that, The actual spraying pressure for the actual test of water absorption rate determined according to the agglomeration area ratio includes: Comparing the agglomeration area ratio with a preset agglomeration area ratio; If the agglomeration area ratio is greater than the preset agglomeration area ratio, the spraying pressure is reduced.

5. The cat litter quality detection method based on intelligent sensor according to claim 4 is characterized in that, The actual spraying interval is determined based on the maximum height of the agglomerate, including: Collecting the maximum height of the agglomerate; Comparing the height of the agglomerate with a preset agglomerate height; If the height of the agglomerate is greater than the preset agglomerate height, the spraying interval is enlarged.

6. The cat litter quality detection method based on intelligent sensor according to claim 5 is characterized in that, The reduction range of the height of the nozzle is determined according to the difference between the air humidity and a preset air humidity.

7. The cat litter quality detection method based on intelligent sensor according to claim 6 is characterized in that, The adjustment range of the spraying pressure of the nozzle is determined according to the difference between the agglomeration area ratio and the preset agglomeration area ratio.

8. The cat litter quality detection method based on intelligent sensor according to claim 7 is characterized in that, The expansion range of the spraying interval of the nozzle is determined according to the difference between the height of the agglomerate and the preset agglomerate height.

9. The cat litter quality detection method based on intelligent sensor according to claim 8 is characterized in that, If the cat litter water absorption evaluation value is greater than the preset water absorption evaluation value, the cat litter in the test tray is replaced and the test is performed again.

10. A detection system using the cat litter quality detection method based on intelligent sensor according to any one of claims 1 to 9, characterized in that: include: A spraying unit, for spraying water on the surface of the cat litter in the test tray, comprising a spray head for spraying water and an upper and lower telescopic assembly connected to the spray head for adjusting the vertical height of the spray head; An inspection unit connected to the spraying unit includes an image sensor for collecting the agglomeration area of ​​the cat litter, a displacement sensor for detecting the agglomeration height, an electronic scale for respectively detecting the initial mass and the final mass of the cat litter, and a humidity sensor disposed above the test tray for collecting the air humidity above the test tray; A control unit is connected to the spraying unit and the inspection unit, respectively, and is used to determine the actual spraying height of water according to the air humidity above the test tray, determine the actual spraying pressure according to the proportion of the agglomeration area, determine the actual spraying interval according to the height of the agglomeration, and determine the water absorption evaluation value of the cat litter according to the initial mass and final mass of the cat litter and the air humidity above the test tray.

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