A retail and wholesale channel supervision system based on cloud platform

Abstract

The present invention relates to the field of airtightness testing technology, and in particular to a retail and wholesale channel supervision system based on a cloud platform, comprising a testing chamber, and further comprising: a testing module for testing the airtightness of packaging samples provided by a channel supply end, comprising a space simulation component, an internal pressure testing component for simulating the internal air pressure environment of the packaging sample, and a depression testing component for detecting the depth of the depression of the packaging sample; an environmental simulation module for simulating different storage conditions of the packaging sample, comprising a low-pressure simulation component for simulating the low-pressure environment of the packaging sample by extracting gas from the internal space of the testing chamber, and a low-temperature simulation component for simulating the low-temperature environment of the packaging sample by absorbing heat from the internal space of the testing chamber; and a control module for determining samples that fail airtightness testing based on the gas permeability. The present invention improves the accuracy of packaging airtightness testing, can achieve cloud-based management and control, and ensure the quality of channel products.

Description

Technical Field

[0001] The present invention relates to the field of air tightness detection technology, and in particular to a retail and wholesale channel supervision system based on a cloud platform. Background Art

[0002] With the development of computer technology and Internet technology, cloud platforms have been introduced into various industries. For example, in the field of retail supervision, information about channel supply goods and quality inspection information of goods can be obtained through cloud platforms. Some cloud platforms are interconnected with quality inspection systems, which can quickly obtain inspection information and realize quality supervision. In actual situations, for retail and wholesale, most of them are sealed products. Therefore, the inspection of sealed products is very important. There are several technologies that are widely used to detect the airtightness of packaging: water immersion method is to put the package into water and observe whether there are bubbles. If there is an air leak in the package, the water immersion method observes bubbles escaping from the leak point. This method is low-cost, but can only perform qualitative detection and cannot quantitatively analyze the degree of leakage. The differential pressure method determines the airtightness of the package by creating a pressure difference between the inside and outside of the package and then measuring the pressure change. This method can quantitatively analyze the leakage rate and is suitable for automated detection. The dye penetration method sprays a specific dye solution on the surface of the package. If the package is leaking, the dye will penetrate into the package. The leakage is then determined by observing whether there are traces of dye inside the package. The vacuum detection method places the package in a vacuum environment. If the package is not leaking, the package will change shape due to the internal and external pressure difference. The airtightness is determined by observing the change in package shape.

[0003] Chinese Patent Publication No. CN114910223A discloses an airtightness tester for food packaging bags, comprising a fixed base, an up-and-down swing mechanism, a clamping and wiping detection module, a fixed bracket, and a filling and suction mechanism. The fixed bracket is located on one side of the fixed base and its top end extends above the fixed base. The up-and-down swing mechanism is located on the fixed base. The clamping and wiping detection module is located on the up-and-down swing mechanism. The filling and suction mechanism is located at the top of the fixed bracket and above the clamping and wiping detection module. Therefore, the airtightness tester for food packaging bags has the problem that the air pressure and temperature drop during the transportation of biscuits to high altitudes accelerates the rate of gas escape from the packaging bag, resulting in a decrease in the accuracy of the packaging airtightness test. Summary of the Invention

[0004] To this end, the present invention provides a retail and wholesale channel supervision system based on a cloud platform to overcome the problem in the prior art that the gas escape rate in the packaging bag is accelerated due to the decrease in air pressure and temperature during the transportation of biscuits to high-altitude areas, thereby reducing the accuracy of packaging air tightness detection.

[0005] To achieve the above objectives, the present invention provides a cloud-based retail and wholesale channel supervision system, including a testing room and:

[0006] a detection module connected to the detection chamber and used to detect the air tightness of the packaged samples provided by the channel supply end, comprising a space simulation component for providing a simulated biscuit packaging space for the packaged samples, an internal pressure testing component connected to the space simulation component for simulating the internal air pressure environment of the packaged samples, and a concave testing component disposed below the space simulation component for detecting the depth of the concave of the packaged samples;

[0007] an environmental simulation module connected to the detection chamber and used to simulate different storage conditions of the packaged samples, including a low-pressure simulation component disposed on the outer wall of the detection chamber for simulating a low-pressure environment of the packaged samples by extracting gas from the interior of the detection chamber, and a low-temperature simulation component connected to the outer wall of the detection chamber for simulating a low-temperature environment of the packaged samples by absorbing heat from the interior of the detection chamber;

[0008] a control module, connected to the detection module and the environmental simulation module, respectively, for controlling the low-temperature simulation component and the low-pressure simulation component to perform gradient tests on the packaging samples at several temperatures and external pressures, determining a gas permeability based on the internal pressure and initial internal pressure of the simulated biscuit packaging space obtained from the gradient tests, and determining whether a sample is unqualified for airtightness based on the gas permeability;

[0009] The cloud upload module is connected to the control module to record the basic information of the samples that fail the airtightness test and upload them to the cloud platform.

[0010] Furthermore, the space simulation component includes:

[0011] A placement slot for supporting the packaged sample, wherein a card slot having the same length as the side wall is provided on the upper surface of each side wall of the placement slot, and the card slots on the upper surface of each side wall are interconnected;

[0012] A sealing strip is provided above the placement slot and is engaged with the clamping slot when the packaged sample is placed on the placement slot to seal the space between the packaged sample and the placement slot;

[0013] The sealing strip and the card slot are arranged at the same spatial position and have the same length as the card slot.

[0014] Furthermore, the internal pressure test assembly includes:

[0015] An air pump, which is arranged on the inner wall of the placement tank and is used to adjust the internal air pressure of the space in the placement tank;

[0016] An internal pressure sensor is arranged on the inner wall of the placement groove and is used to detect the internal air pressure of the space in the groove.

[0017] Furthermore, the dent test assembly includes:

[0018] an infrared sensor, which is arranged above the placement groove and is used to detect the concave depth of the packaged sample in the placement groove area;

[0019] A lifting platform is arranged below the placement slot and is used for adjusting the vertical height of the placement slot.

[0020] Furthermore, the low-voltage simulation component includes:

[0021] A negative pressure pump is provided above the placement tank to adjust the external air pressure in the internal space of the detection chamber;

[0022] The external pressure sensor is arranged above the placement groove and is used to detect the external air pressure in the internal space of the detection chamber.

[0023] Furthermore, the low temperature simulation component includes:

[0024] A cold water circulation pipe is provided above the placement tank and absorbs heat in the detection chamber by circulating cold water;

[0025] A refrigerator connected to the cold water circulation pipe for adjusting the temperature of the cold water;

[0026] A temperature sensor is arranged above the placement slot and is used to detect the temperature in the detection chamber.

[0027] Furthermore, the control module is connected to the low-pressure simulation component and the low-temperature simulation component respectively, and is used to reduce the initial external air pressure and initial temperature of the internal space of the detection chamber in a gradient according to the air pressure and temperature at different altitudes, and record the gas permeability test results under each gradient.

[0028] Among them, in the gradient test, when the external air pressure and temperature of the internal space of the detection chamber reach the air pressure and temperature corresponding to the target test altitude, if the gas permeability detected at this time is greater than the preset gas permeability, the control module determines that the packaging sample is an airtightness unqualified sample.

[0029] Furthermore, the gas permeability is the ratio of the difference between the internal air pressure at the start time and the internal air pressure at the end time of a single gradient test to the internal air pressure at the start time.

[0030] Furthermore, the control module is connected to the concave test assembly, and the lifting platform drives the package sample to rise so as to detect the concave depth of the package sample at the end of the gradient test.

[0031] If the concave depth of the packaging sample is less than a preset concave depth, the sample that fails the airtightness test will be marked as an aging sample.

[0032] Furthermore, the control module is further configured to generate a gas permeability change curve of the packaged sample according to the gas permeability, determine a change in the gas permeability in the corresponding simulated environment according to the gas permeability change curve, and correct the shelf life of the biscuits according to the change in the gas permeability;

[0033] The shelf life of the biscuits is negatively correlated with the change in gas permeability.

[0034] Compared with the prior art, the beneficial effects of the present invention are that, by setting up a detection module, an environmental simulation module and a control module, and by setting up a sealed detection chamber, the airtightness detection system can quickly reach the set detection pressure, shorten the detection cycle, improve the detection efficiency, and increase the accuracy of the detection results; by setting up an internal pressure test component, by fixing the packaging sample, simulating the internal environment of the biscuit packaging, thereby evaluating the performance of the packaging under extreme conditions, and achieving improved stability of the detection results; by setting up a depression test component, during the detection process, the aging degree of the packaging sample increases due to the long storage time, resulting in a significant decrease in airtightness, and by detecting the aging performance of the packaging sample, the influence of the aging degree of the packaging sample on the change of the airtightness of the packaging in the environmental simulation is detected, thereby achieving improved accuracy of the detection results; by setting up a low-pressure simulation component and a low-temperature simulation component, it is detected whether the airtightness of the packaging sample under different storage conditions meets the requirements, and the performance of the packaging sample under various pressures and temperatures is output, thereby reducing the biscuit loss rate caused by air leakage of the biscuit packaging bag due to biscuit storage environment factors.

[0035] Furthermore, the system of the present invention is equipped with a space simulation component, an air pump and a pressure sensor, and seals the packaged sample in a placement groove, and detects the pressure changes in the groove to thereby detect the airtightness of the packaged sample under different conditions. The pressure changes directly reflect the sealing condition of the packaged sample, thereby improving the stability of the detection results.

[0036] Furthermore, the system of the present invention provides a negative pressure pump and a cold water circulation pipe, and changes the pressure and temperature in the detection chamber space to simulate the changes in storage conditions when biscuits are transported to plateau areas, detects the sealing performance under extreme environments, and outputs the changes in the air tightness of the packaging samples, thereby improving the efficiency of packaging air tightness detection.

[0037] Furthermore, the system of the present invention sets a preset gas permeability and screens packaging samples with unqualified airtightness, thereby improving the quality control of packaging and reducing the loss rate caused by unqualified packaging. At the same time, it provides data for optimizing packaging, tests packaging samples through gradient adjustment parameters, simulates the changes in airtightness of packaging samples under different conditions, and achieves improved accuracy of test results.

[0038] Furthermore, the system of the present invention sets a preset concave depth. Due to the different storage times of the packaging samples, it is determined that the storage time of the batch of packaging samples is too long, resulting in a decrease in air tightness. The mechanical properties of the packaging samples that do not meet the air tightness requirements are re-tested, thereby improving the accuracy of biscuit packaging air tightness testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a block diagram of the overall structure of the retail and wholesale channel supervision system based on the cloud platform according to an embodiment of the present invention;

[0040] Figure 2 This is an overall structural diagram of a cloud platform-based retail and wholesale channel supervision system according to an embodiment of the present invention;

[0041] Figure 3 This is a structural block diagram of the detection module of the retail and wholesale channel supervision system based on the cloud platform according to an embodiment of the present invention;

[0042] Figure 4 This is a structural block diagram of the environment simulation module of the cloud platform-based retail and wholesale channel supervision system according to an embodiment of the present invention;

[0043] Explanation of the accompanying numbers: 1-testing chamber, 2-external pressure sensor, 3-negative pressure pump, 41-first tension sensor, 4-infrared sensor, 5-internal pressure sensor, 6-placement slot, 7-lifting platform, 8-air pump, 9-refrigerator, 10-cold water circulation pipe, 11-sealing strip, 12-packaging sample, 13-cold water tank. DETAILED DESCRIPTION

[0044] 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 merely used to explain the present invention and are not intended to limit the present invention.

[0045] 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 scope of protection of the present invention.

[0046] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0047] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] See also Figure 1 、 Figure 2 、 Figure 3 as well as Figure 4 As shown in FIG, they are respectively the overall structural block diagram, the overall structural diagram, the structural block diagram of the detection module and the structural block diagram of the environment simulation module of the retail and wholesale channel supervision system based on the cloud platform according to an embodiment of the present invention. A retail and wholesale channel supervision system based on the cloud platform according to an embodiment of the present invention includes a detection room 1, and also includes:

[0049] A detection module connected to the detection chamber 1 is used to detect the air tightness of the packaged sample 12 provided by the channel supply end, including a space simulation component for providing a simulated biscuit packaging space for the packaged sample 12, an internal pressure testing component connected to the space simulation component for simulating the internal air pressure environment of the packaged sample 12, and a concave testing component disposed below the space simulation component for detecting the depth of the concave of the packaged sample 12;

[0050] An environmental simulation module, connected to the detection chamber 1, for simulating different storage conditions of the packaged sample 12, including a low-pressure simulation component disposed on the outer wall of the detection chamber 1 for simulating a low-pressure environment of the packaged sample 12 by extracting gas from the interior space of the detection chamber 1, and a low-temperature simulation component connected to the outer wall of the detection chamber 1 for simulating a low-temperature environment of the packaged sample 12 by absorbing heat from the interior space of the detection chamber 1;

[0051] A control module is connected to the detection module and the environmental simulation module respectively, and is used to control the low-temperature simulation component and the low-pressure simulation component to perform gradient tests of several temperatures and external air pressures on the packaging sample 12, and determine the gas permeability based on the internal air pressure and initial internal air pressure of the simulated biscuit packaging space obtained by the gradient test, and determine the airtightness unqualified sample based on the gas permeability.

[0052] The cloud upload module is connected to the control module to record the basic information of the samples that fail the airtightness test and upload them to the cloud platform.

[0053] Specifically, the basic information of the airtightness-unqualified samples recorded by the cloud upload module includes the product name corresponding to the unqualified samples and the name of the retail and wholesale channel. Of course, those skilled in the art can also set it according to specific needs, which will not be repeated here.

[0054] Specifically, the packaging sample 12 is essentially an unwrapped plastic film or degradable plastic used to package biscuits.

[0055] Specifically, the control module may be a PLC controller or an industrial computer.

[0056] In implementation, the system of the present invention is provided with a detection module, an environmental simulation module and a control module, and a sealed detection chamber 1 is provided, so that the airtightness detection system can quickly reach the set detection pressure, shorten the detection cycle, improve the detection efficiency, and increase the accuracy of the detection results; by providing an internal pressure test component, the packaging sample 12 is fixed to simulate the internal environment of the biscuit packaging, thereby evaluating the performance of the packaging under extreme conditions, thereby improving the stability of the detection results; by providing a depression test component, the aging degree of the packaging sample 12 increases due to the long storage time during the detection process, resulting in a significant decrease in airtightness. By detecting the aging performance of the packaging sample 12, the influence of the aging degree of the packaging sample 12 on the change of the airtightness of the packaging in the environmental simulation is detected, thereby improving the accuracy of the detection results; by providing a low-pressure simulation component and a low-temperature simulation component, whether the airtightness of the packaging sample 12 under different storage conditions meets the requirements is detected, and the performance of the packaging sample 12 under various pressures and temperatures is output, thereby reducing the biscuit loss rate caused by leakage of the biscuit packaging bag due to biscuit storage environment factors.

[0057] Specifically, the space simulation component includes:

[0058] A placement slot 6 for supporting the packaging sample 12, wherein a card slot having the same length as the side wall is provided on the upper surface of each side wall of the placement slot 6, and the card slots on the upper surface of each side wall are interconnected;

[0059] A sealing strip 11 is provided above the placement groove 6 and engages with the card slot when the packaged sample 12 is placed on the placement groove 6 to seal the groove space between the packaged sample 12 and the placement groove 6;

[0060] The sealing strip 11 and the card slot are arranged at the same spatial position and have the same length as the card slot.

[0061] Specifically, the size of the placement slot 6 is determined according to the size of the biscuits. The length and width of the placement slot 6 are positively correlated with the length and width of the biscuits. The placement slot 6 of the present invention is preferably a cube with an upper opening.

[0062] Specifically, the sealing strip 11 is arranged on the upper surface of the placement groove 6 along the contour line of the upper surface of the placement groove 6 .

[0063] Specifically, the internal pressure test assembly includes:

[0064] An air pump 8, which is arranged on the inner wall of the placement tank 6 and is used to adjust the internal air pressure of the space in the placement tank 6;

[0065] The internal pressure sensor 5 is arranged on the inner wall of the placement groove 6 to detect the internal air pressure of the space in the groove.

[0066] In practice, the system of the present invention sets up a space simulation component, an air pump 8 and a pressure sensor, seals the packaged sample 12 in the placement groove 6, detects the pressure change in the groove, and thus detects the airtightness of the packaged sample 12 under different conditions. The pressure change directly reflects the sealing condition of the packaged sample 12, thereby improving the stability of the detection results.

[0067] Specifically, the dent test assembly includes:

[0068] an infrared sensor 4 disposed above the placement slot 6 to detect the concave depth of the packaged sample 12 within the placement slot 6;

[0069] The lifting platform 7 is arranged below the placement groove 6 and is used to adjust the vertical height of the placement groove 6.

[0070] Specifically, the infrared sensor 4 is disposed on the inner wall of the detection chamber 1 in a vertical direction relative to the center point of the lower surface of the placement slot 6 .

[0071] Specifically, the lifting platform 7 is an electric lifting rod with two ends connecting the bottom of the inner wall of the detection chamber 1 and the bottom of the placement groove 6.

[0072] Specifically, the low-voltage simulation component includes:

[0073] A negative pressure pump 3 is provided above the placement tank 6 to adjust the external air pressure in the internal space of the detection chamber 1;

[0074] The external pressure sensor 2 is arranged above the placement groove 6 and is used to detect the external air pressure in the internal space of the detection chamber 1.

[0075] Specifically, the low temperature simulation component includes:

[0076] A cold water circulation pipe 10 is provided above the placement tank 6 and absorbs heat in the detection chamber 1 by circulating cold water;

[0077] A refrigerator 9 connected to the cold water circulation pipe 10 for adjusting the temperature of the cold water;

[0078] A temperature sensor is provided above the placement slot 6 to detect the temperature in the detection chamber 1 .

[0079] Specifically, the cold water circulation pipe 10 surrounds the interior of the detection chamber 1 above the placement tank 6 .

[0080] Specifically, the low temperature simulation component further includes a cold water tank 13 connected to the cooling circulation pipe and the refrigerator 9 for storing cold water.

[0081] Specifically, the refrigerator 9 performs heat exchange with the cold water in the cold water tank 13 during the process of compressing and throttling the refrigerant inside the refrigerator 9 so as to convert the refrigerant from liquid to gas, thereby reducing the temperature of the cold water.

[0082] During implementation, the system of the present invention provides a negative pressure pump 3 and a cold water circulation pipe 10, and changes the pressure and temperature in the detection chamber 1 to simulate the changes in storage conditions when the biscuits are transported to the plateau area, detects the sealing performance under extreme environments, and outputs the changes in the airtightness of the packaging sample 12, thereby improving the efficiency of packaging airtightness detection.

[0083] Specifically, the control module is connected to the low-pressure simulation component and the low-temperature simulation component respectively, and is used to reduce the initial external air pressure and initial temperature of the internal space of the detection chamber 1 in a gradient according to the air pressure and temperature at different altitudes, and record the gas permeability test results under each gradient.

[0084] Among them, in the gradient test, when the external air pressure and temperature of the internal space of the detection chamber 1 reach the air pressure and temperature corresponding to the target test altitude, if the gas permeability detected at this time is greater than the preset gas permeability, the control module determines that the packaging sample 12 is an airtightness unqualified sample.

[0085] Specifically, the gas permeability is the ratio of the difference between the internal air pressure at the start time and the internal air pressure at the end time of a single gradient test to the internal air pressure at the start time.

[0086] Specifically, the general value range of the preset gas permeability is [0.002, 0.006].

[0087] Preferably, the preset gas permeability is 0.003.

[0088] In practice, the system of the present invention sets a preset gas permeability and screens packaging samples 12 with unqualified airtightness, thereby improving the quality control of packaging and reducing the loss rate caused by unqualified packaging. At the same time, it provides data for optimizing packaging, detects the packaging samples 12 through gradient adjustment parameters, simulates the changes in airtightness of the packaging samples 12 under different conditions, and achieves an improvement in the accuracy of the test results.

[0089] Specifically, the control module is connected to the concave test assembly, and drives the package sample 12 to rise through the lifting platform 7 to detect the concave depth of the package sample 12 at the end of the gradient test.

[0090] If the concave depth of the packaging sample 12 is less than the preset concave depth, the airtightness-unqualified sample is marked as an aging sample.

[0091] Specifically, the general value range of the preset concave depth is [0.2mm, 0.5mm].

[0092] Preferably, the preset concave depth is 0.4 mm.

[0093] Specifically, a preferred embodiment of increasing the rising height of the lifting platform 7 per unit time is to increase the height of the lifting platform 7 by 20 cm within 2 seconds.

[0094] During implementation, the system of the present invention sets a preset concave depth. Due to the different storage times of the packaging samples 12, it is determined that the storage time of the batch of packaging samples 12 is too long, resulting in a decrease in air tightness. The mechanical properties of the packaging samples 12 that do not meet the air tightness requirements are re-tested, thereby improving the accuracy of the air tightness detection of biscuit packaging.

[0095] Specifically, the control module is further configured to generate a gas permeability change curve of the packaged sample 12 according to the gas permeability, determine a change in the gas permeability in a corresponding simulated environment according to the gas permeability change curve, and revise the shelf life of the biscuits according to the change in the gas permeability;

[0096] The shelf life of the biscuits is negatively correlated with the change in gas permeability.

[0097] Specifically, the horizontal axis of the gas permeability change curve is temperature or external air pressure, and the vertical axis is gas permeability. Drawing the gas permeability change curve is a technical means well known to those skilled in the art. Therefore, the drawing process of the gas permeability change curve and other details of the gas permeability change curve will not be repeated here.

[0098] Specifically, the average change in gas permeability is calculated based on the gas permeability of each gradient test, and the change in gas permeability at the target test altitude and target test temperature is calculated based on the average change in gas permeability; the change in gas permeability is the difference between the gas permeability at the target test altitude and at the target test temperature and the gas permeability at the reference test altitude and at the reference test temperature, the gas permeability at the target test altitude and target test temperature = the gas permeability at the reference test altitude and at the reference test temperature + the average change in gas permeability × the number of gradients, the number of gradients = (target test temperature - reference test temperature) / the temperature value reduced by a single gradient detection.

[0099] Specifically, the calculation formula for the average change in gas permeability is:

[0100]

[0101] Where q is the change in gas permeability, q i is the gas permeability of the i-th gradient detection, q i-1 is the gas permeability of the i-1th gradient detection, and n is the number of gradient detections.

[0102] Specifically, the greater the change in gas permeability, the shorter the shelf life of the biscuits. When the gas permeability at the target test altitude and target test temperature exceeds the gas permeability at the reference test altitude and reference test temperature by 0.0002, the shelf life of the biscuits is shortened to 0.9 times the original. When the gas permeability at the target test altitude and target test temperature exceeds the gas permeability at the reference test altitude and reference test temperature by 0.0002, the shelf life of the biscuits is shortened for every 0.00001 increase in the excess. The dry shelf life is shortened by another day. For example, at an altitude of 1,500 meters, the atmospheric pressure is 867 hPa and the temperature is 20°C. The gas permeability at this time is 0.004, and the shelf life of the biscuits is 80 days. When the biscuit packaging is planned to be transported to an area with an altitude of 1,600 meters, the atmospheric pressure is 860 hPa, and the temperature is 19.35°C, the gas permeability becomes 0.0042, and the change in gas permeability is 0.0002. Therefore, the shelf life of the biscuits is shortened to 0.9 times the original value, to 80 days × 0.9 = 72 days.

[0103] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A cloud-based retail and wholesale channel supervision system, including a testing room, characterized in that: Also includes: The detection module is connected to the detection chamber and is used to detect the air tightness of the packaging samples provided by the channel supply end, including a space simulation component for providing a simulated biscuit packaging space for the packaging sample, an internal pressure testing component connected to the space simulation component for simulating the internal air pressure environment of the packaging sample, and a concave testing component disposed below the space simulation component for detecting the depth of the concave of the packaging sample; An environmental simulation module, connected to the testing chamber, is used to simulate different storage conditions for packaged samples, including a low-pressure simulation component disposed on the outer wall of the testing chamber to simulate a low-pressure environment for the packaged samples by extracting gas from the interior of the testing chamber, and a low-temperature simulation component connected to the outer wall of the testing chamber to simulate a low-temperature environment for the packaged samples by absorbing heat from the interior of the testing chamber; a control module, connected to the detection module and the environmental simulation module, respectively, for controlling the low-temperature simulation component and the low-pressure simulation component to perform gradient tests on the packaging samples at various temperatures and external pressures, determining the gas permeability based on the internal pressure and initial internal pressure of the simulated biscuit packaging space obtained from the gradient tests, and determining whether the sample is unqualified for airtightness based on the gas permeability; A cloud upload module, which is connected to the control module to record the basic information of samples that fail airtightness testing and upload it to the cloud platform; The control module is connected to the low-pressure simulation component and the low-temperature simulation component respectively, and is used to reduce the initial external air pressure and initial temperature of the internal space of the test chamber in a gradient according to the air pressure and temperature at different altitudes, and record the gas permeability test results under each gradient; The average change in gas permeability is calculated based on the gas permeability of each gradient test, and the change in gas permeability at the target test altitude and target test temperature is calculated based on the average change in gas permeability. The change in gas permeability is the difference between the gas permeability at the target test altitude and target test temperature and the gas permeability at the reference test altitude and reference test temperature. The gas permeability at the target test altitude and target test temperature = the gas permeability at the reference test altitude and reference test temperature + the average change in gas permeability × the number of gradients. The number of gradients = (target test temperature - reference test temperature) / the temperature reduction value of a single gradient test. The control module corrects the shelf life of the biscuits according to the change in gas permeability, and the shelf life of the biscuits is negatively correlated with the change in gas permeability.

2. The cloud platform-based retail and wholesale channel supervision system according to claim 1 is characterized in that: Space simulation components include: A placement slot for supporting the packaged sample, wherein a card slot having the same length as the side wall is provided on the upper surface of each side wall of the placement slot, and the card slots on the upper surface of each side wall are interconnected; A sealing strip is provided above the placement slot and engages with the card slot when the packaged sample is placed on the placement slot to seal the space between the packaged sample and the placement slot; The sealing strip and the card slot are arranged at the same spatial position and have the same length as the card slot.

3. The cloud platform-based retail and wholesale channel supervision system according to claim 2 is characterized in that: Internal pressure test components include: An air pump, which is arranged on the inner wall of the placement tank and is used to adjust the internal air pressure of the space in the placement tank; The internal pressure sensor is arranged on the inner wall of the placement tank and is used to detect the internal air pressure of the space in the tank.

4. The cloud platform-based retail and wholesale channel supervision system according to claim 3 is characterized in that: The dent test kit includes: An infrared sensor is provided above the placement slot to detect the concave depth of the packaged sample in the placement slot area; The lifting platform is arranged below the placement slot and is used for adjusting the vertical height of the placement slot.

5. The cloud platform-based retail and wholesale channel supervision system according to claim 4 is characterized in that: Low voltage analog components include: A negative pressure pump is provided above the placement tank to adjust the external air pressure in the internal space of the detection chamber; The external pressure sensor is arranged above the placement groove and is used to detect the external air pressure in the internal space of the detection chamber.

6. The cloud platform-based retail and wholesale channel supervision system according to claim 5 is characterized in that: Low temperature simulation components include: A cold water circulation pipe is provided above the placement tank and absorbs heat in the detection chamber by circulating cold water; A refrigerator connected to the cold water circulation pipe to adjust the temperature of the cold water; The temperature sensor is arranged above the placement slot and is used to detect the temperature in the detection chamber.

7. The cloud platform-based retail and wholesale channel supervision system according to claim 1 is characterized in that: The gas permeability is the ratio of the difference between the internal gas pressure at the start and end of a single gradient test to the internal gas pressure at the start.

8. The cloud platform-based retail and wholesale channel supervision system according to claim 1 is characterized in that: During the gradient test, when the external air pressure and temperature inside the test chamber reach the air pressure and temperature corresponding to the target test altitude, if the gas permeability detected at this time is greater than the preset gas permeability, the control module determines that the packaging sample is an airtightness-unqualified sample; The control module is connected to the concave test assembly, and the lifting platform drives the package sample to rise so as to detect the concave depth of the package sample at the end of the gradient test. Among them, if the concave depth of the packaging sample is less than the preset concave depth, the sample that fails the airtightness test will be marked as an aging sample.

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