Detection method of snack microorganisms

Abstract

The invention relates to a snack microorganism detection method, and belongs to the technical field of food detection, and the snack microorganism detection method comprises the following steps: step 1, respectively putting a plurality of sampling tubes filled with snacks into a heating area and a refrigeration area in a sorting module of intelligent heating equipment; 2, counting the average temperature of the samples in the sampling tubes in the heating area and the refrigeration area to judge whether the average temperature of the samples in the heating area is lower than a threshold value or not; 3, feeding the plurality of sampling pipes in the heating area into a heating module and a refrigerating module; 4, comparing the average temperature of the samples in the heating area and the refrigeration area with a threshold value; and 5, detecting the heated or refrigerated sample. Temperature regulation and control in the snack microbe detection process are improved, the snack microbe detection precision is improved, and the screening mechanism of substandard snacks is enhanced, so that the substandard snacks are prevented from flowing into the market or reduced, the overall quality of the snacks produced and sold by enterprises is guaranteed, and the reliability of food safety detection is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of food detection, and in particular relates to a method for detecting snack microorganisms. Background Art

[0002] In the food processing industry, food has the probability of being contaminated with various bacteria during the production, transportation and processing. If the contaminated parts are not checked and cleaned according to the results, the contaminated food will eventually flow into the bodies of consumers. Therefore, it is necessary to test the microorganisms on the surface of food.

[0003] In the process of microbial detection, the ATP fluorescence detection method is usually used. However, in this method, food samples with too high or too low temperatures will affect the normal detection of food samples by the microbial detector. Therefore, there are strict requirements on the temperature of the food samples collected on the sampling swab. The collection environment of each food sample is different, and the temperature is likely to be different. When testing food samples with multiple different temperatures, it is necessary to adjust the temperature of the food sample. The temperature adjustment speed affects the detection speed. For this reason, Chinese patent CN117844627B discloses a food microbial rapid detection device and detection method, including a detector body and an operation box. The invention relates to a body, an installation box, a placement box and a placement frame, wherein the installation box is fixedly connected to the operating box, and the detector body is arranged in the installation box, wherein the installation box divides the interior of the operating box into a heating chamber and a refrigeration chamber, the placement box is fixedly connected to the outer wall of the operating box, and the interior of the placement frame is fixedly connected with a partition frame, which divides the interior of the placement box into a mobile chamber and multiple fixed chambers, and the number of the placement frames is set to multiple. Through the above technical scheme, the problem in the prior art that when using a microbial detector to detect food samples of multiple different temperatures, the detection speed is affected because the temperature of the food samples needs to be adjusted.

[0004] However, in the heating process, different heating powers are required in different situations. For example, when the temperature of the food samples received is generally low, but the temperature required for detection is high, it is necessary to heat several samples to a target temperature that is significantly different from the current temperature as quickly as possible, which requires a large heating power. In the above scheme, the heating power is relatively fixed and the heating effect is average. Therefore, a method for detecting snack microorganisms with an adjustable heating scheme and good heating effect is needed. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a method for detecting snack microorganisms, which has the characteristic of good heating effect.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A method for detecting snack microorganisms comprises the following steps:

[0008] Step 1: putting several samples of several kinds of food into several sampling tubes respectively, and putting the several sampling tubes into the heating area and the cooling area of ​​the sorting module of the intelligent heating device respectively;

[0009] Step 2: The sorting module counts the average temperature of the samples in the sampling tubes of the heating zone and the cooling zone and uploads the temperature data to the control module, which determines whether the average temperature of the samples in the heating zone is lower than the threshold value and whether the average temperature of the samples in the cooling zone is higher than the threshold value;

[0010] Step 3: The sorting module sends several sampling tubes in the heating zone to the heating module and the cooling module;

[0011] Step 4: The heating module and the cooling module heat a plurality of sampling tubes respectively. When the control module determines that the average temperature of the samples in the heating zone is lower than the threshold, the power of the heating module is increased; when the control module determines that the average temperature of the samples in the cooling zone is higher than the threshold, the power of the cooling module is increased;

[0012] Step 5: Test the heated or cooled samples.

[0013] As a preferred technical solution of the present invention, the step one also includes: pre-inputting a temperature threshold interval [t1, t2] in the control module; the step two also includes: the sorting module counts the average temperature tr of the samples in the heating zone and the average temperature tl of the samples in the cooling zone and uploads the temperature data to the control module; the step four also includes: the control module instructs the heating module power Pr to be adjusted to P0×t2 / tr, and the control module instructs the heating module power Pl to be adjusted to P0×t1 / tl, wherein tr≥t2, t1≤t1, and P0 is a pre-input constant.

[0014] As a preferred technical solution of the present invention, step two also includes: the sorting module counts the number of sampling tubes in the heating zone and the cooling zone, and uploads the quantity data to the control module, and the control module determines whether the number of samples in the heating zone is higher than the threshold and whether the number of samples in the cooling zone is higher than the threshold.

[0015] As a preferred technical solution of the present invention, the step one also includes: pre-inputting a quantity threshold s0 in the control module, the step two also includes: the sorting module counts the number s of sampling tubes in the heating zone and the cooling zone, and uploads the number s to the control module; the step four also includes: the control module instructs the heating module to adjust the power to P0×t2 / tr×s / s0, the control module instructs the heating module to adjust the power to P0×tl / t2×s / s0, wherein tr≥t2, t1≤t1, and P0 is a pre-input constant.

[0016] As a preferred technical solution of the present invention, step four includes: the control module determines whether the heat release of the refrigeration module is higher than that of the heating module, and when the judgment result is, instructs the waste heat outlet of the refrigeration module to open the connecting pipe with the heating module.

[0017] As a preferred technical solution of the present invention, step four also includes: the control module determines whether Pl×(1-η)×c is greater than Pr×c, and when the judgment result is to instruct the waste heat outlet of the refrigeration module and the connecting pipe of the heating module to open, wherein c is the propagation coefficient input in advance, and η is the thermal efficiency of the refrigeration module.

[0018] As a preferred technical solution of the present invention, the step four also includes: when the control module instructs the waste heat outlet of the refrigeration module and the connecting pipe of the heating module to open, the power of the heating module is corrected downward.

[0019] As a preferred technical solution of the present invention, step four also includes: when the control module instructs the waste heat outlet of the refrigeration module to open the connecting pipe with the heating module, the heating module power Pl is adjusted to P0×tl / t2-A1, wherein A1=Pl×(1-η)×c×d, and d is a pre-input correction coefficient.

[0020] The beneficial effects of the present invention are:

[0021] (1) By making the sorting module count the average temperature of the samples in the sampling tubes of the heating zone and the cooling zone and uploading the temperature data to the control module, the control module increases the power of the heating module when it determines that the average temperature of the samples in the heating zone is lower than the threshold, and increases the power of the cooling module when it determines that the average temperature of the samples in the cooling zone is higher than the threshold, so that the heating scheme can be adjusted and the heating effect is improved;

[0022] (2) By making the sorting module count the number of sampling tubes in the heating zone and the cooling zone, the control module increases the heating power when the number of samples in the heating zone is higher than the threshold, and increases the cooling power when the number of samples in the cooling zone is higher than the threshold, thereby further improving the temperature control efficiency;

[0023] (3) When the heat release of the cooling module is higher than that of the heating module, the control module is instructed to open the waste heat outlet of the cooling module and the connecting pipe of the heating module when the judgment result is that the waste heat of the cooling module is greater than the heat generation of the heating module, so that the waste heat of the cooling module is used to assist the heating module in heating, and when the waste heat of the cooling module is less than the heat generation of the heating module, the heat loss of the heating module is prevented, thereby reducing the energy consumption of the heating module and improving the temperature control efficiency of the heating module;

[0024] (4) By improving the temperature control during the snack microbial detection process, the detection accuracy of snack microorganisms can be improved, and the screening mechanism for substandard snacks can be strengthened, thereby avoiding or reducing the flow of substandard snacks into the market, ensuring the overall quality of snacks produced and sold by the company, and increasing the reliability of food safety testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 A structural flow chart of the method steps of the present invention;

[0028] Description of main component symbols:

[0029] In the figure: 1. Shell; 2. Sorting module; 21. Flip door; 22. Push rod; 23. Test tube rack; 3. Refrigeration module; 31. Refrigerator; 32. Waste heat outlet; 4. Heating module; 41. Heater; 5. Test tube rack. DETAILED DESCRIPTION

[0030] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0031] See also Figure 1-2 , a method for detecting snack microorganisms, comprising the following steps:

[0032] Step 1: putting several samples of several kinds of food into several sampling tubes respectively, and putting the several sampling tubes into the heating area and the cooling area of ​​the sorting module 2 of the intelligent heating device respectively;

[0033] Specifically, the intelligent heating device comprises at least a quadrangular prism-shaped shell 1, the quadrangular prism-shaped shell 1 is divided into a sorting module 2 arranged on the side of the shell 1 and a heating module 4 and a refrigeration module 3 in the shell 1, the sorting module 2 comprises a rectangular hollow cavity, the rectangular hollow cavity is provided with a flip door 21, the flip door 21 is arranged on the surface of the shell 1, the flip door 21 constitutes a part of the shell 1 when closed, and the flip door 21 connects the hollow cavity of the sorting module 2 with the outer space of the shell 1 when opened, and at the same time, two test tube racks 523 are arranged in the hollow cavity, and the two test tube racks 523 respectively constitute a heating zone and a refrigeration zone;

[0034] In actual use, snack microbial testing is carried out in batches. When each batch is carried out, the operator roughly measures the sample temperature, divides several test tubes with samples into those that need to be heated and those that need to be cooled, and puts them into the heating area and cooling area of ​​the sorting module 2 respectively;

[0035] After step 1 is completed, proceed to step 2.

[0036] Step 2: The sorting module 2 counts the average temperature of the samples in the sampling tubes of the heating zone and the cooling zone and uploads the temperature data to the control module, which determines whether the average temperature of the samples in the heating zone is lower than the threshold value and whether the average temperature of the samples in the cooling zone is higher than the threshold value;

[0037] Specifically, a non-contact temperature sensor, such as an infrared temperature detector, is provided in the hollow cavity of the sorting module 2. The temperature sensor samples the temperature of all samples on the test tube rack 523 in the heating zone and calculates the average value. Then, the temperature of all samples on the test tube rack 523 in the cooling zone is sampled and the average temperature is calculated. Then, the two average temperature values ​​are uploaded to the control module respectively. After receiving the average temperature values ​​of the two samples in this batch, the control module determines whether the average temperature of the samples in the heating zone is lower than the threshold value, and determines whether the average temperature of the samples in the cooling zone is higher than the threshold value.

[0038] After step 2 is completed, proceed to step 3;

[0039] Step 3: The sorting module 2 sends a number of sampling tubes in the heating zone to the heating module and the cooling module 3;

[0040] In this embodiment, two side openings and two push rods 22 are respectively provided in the cavity to cooperate with the two test tube racks 523. The push rods 22 are used to push the test tube racks 523 out of the sorting module 2 from the corresponding side openings. At the same time, the refrigeration module 3 and the heating module are cavities respectively connected to the two side openings of the sorting module 2. The cavity of the refrigeration module 3 is connected to the refrigerator 31, and the cavity of the heating module is respectively connected to the heating module. Flip doors are provided at the two side openings. The flip doors are opened and closed under the command of the control module. When the flip doors of the side openings are opened, the refrigeration module 3 and the heating module are connected to the sorting module 2.

[0041] When in use, after the control module completes the judgment of the two average temperature data, it instructs the flip door of the side opening to open, and instructs the push rod 22 to push the corresponding test tube rack 523 into the heating module or the cooling module 3, and then the push rod 22 retracts, and the control module instructs the flip door of the side opening to close;

[0042] After step 3 is completed, step 4 is executed, the heating module and the cooling module 3 heat the plurality of sampling tubes respectively, and the control module increases the power of the heating module when it determines that the average temperature of the samples in the heating zone is lower than the threshold value, and increases the power of the cooling module 3 when it determines that the average temperature of the samples in the cooling zone is higher than the threshold value;

[0043] Specifically, the heater 41 of the heating module 4 heats the test tube in the heating module 4 to heat the sample to be heated to the corresponding temperature, and the refrigerator 31 of the refrigeration module 3 cools the test tube in the refrigeration module 3 to cool the sample to be cooled to the corresponding temperature;

[0044] After step 4 is completed, proceed to step 5.

[0045] Step 5: Testing the heated or cooled samples;

[0046] Specifically, after the operation of the heating module and the cooling module 3 is completed, the control module instructs the flip door of the side opening of the sorting module 2 to open, and then the push rod 22 extends out to connect with the test tube rack 523 in the heating module or the cooling module 3, and the test tube rack 523 is pulled back into the sorting module 2. As for the connection method of the push rod 22 and the test tube rack 523, a metal surface can be set on the side of the test tube rack 523 facing the push rod 22, and an electromagnet that can be powered on and off is set at the head end of the push rod 22. When the electromagnet is powered on, it is adsorbed with the metal surface of the test tube rack 523, and when the power is off, it is no longer adsorbed with the test tube rack 523, so as to complete the separation of the push rod 22 and the test tube rack 523, thereby realizing the detachable connection between the push rod 22 and the test tube rack 523;

[0047] After the test tube racks 523 are pulled back into the sorting module 2, the operator takes out a number of test tube racks 523 from the sorting module 2 and performs detection using the ATP fluorescence detection method.

[0048] By making the sorting module 2 count the average temperature of the samples in the sampling tubes of the heating zone and the cooling zone and uploading the temperature data to the control module, the control module increases the power of the heating module when it determines that the average temperature of the samples in the heating zone is lower than the threshold, and increases the power of the cooling module 3 when it determines that the average temperature of the samples in the cooling zone is higher than the threshold, so that the heating scheme can be adjusted and the heating effect is improved.

[0049] In the above process of determining the average temperature of the samples and adjusting according to the average temperature, specifically, in step one, before each batch of testing, the control module pre-inputs the temperature threshold interval [t1, t2], in step two, the sorting module 2 counts the average temperature tr of the samples in the heating zone and the average temperature tl of the samples in the cooling zone and uploads the temperature data to the control module; the control module determines whether tr is less than t2, in step four, the control module instructs the heating module power Pr to be adjusted to P0×t2 / tr, and the control module instructs the heating module power Pl to be adjusted to P0×tl / t2, wherein tr≥t2, t1≤t1, P0 is a pre-input constant, when tr<t2, the control module takes tr=t2, and when tl<t1, the control module takes tl=t1.

[0050] When the average temperature tr of the sample in the heating zone is less than t2, it means that the sample temperature is low, and the sample placed in the heating zone needs to be heated, that is, the temperature required to detect this sample is high, and a larger heating power is required. At this time, the control module needs to increase the heating power accordingly. At this time, the value of P0×tl / t2 is high. When the control module instructs the heating module power Pr to be adjusted to P0×t2 / tr, the heating power is increased when the sample temperature is low and a larger heating power is required;

[0051] Similarly, when the average temperature tl of the samples in the refrigeration zone is less than t1, it means that the sample temperature is relatively high, and the samples placed in the refrigeration zone need to be cooled, that is, the temperature required to detect this sample is relatively low, and a larger refrigeration power is required. At this time, the control module needs to increase the refrigeration power accordingly. At this time, the value of P0×t1 / tl is relatively high. When the control module instructs the heating module power Pl to be adjusted to P0×t1 / tl, the refrigeration power is increased when the sample temperature is relatively high and the refrigeration power needs to be increased.

[0052] The number of samples will also affect the efficiency of heating and cooling. Therefore, step 2 also includes: the sorting module 2 counts the number of sampling tubes in the heating zone and the cooling zone, and uploads the number data to the control module, and the control module determines whether the number of samples in the heating zone is higher than the threshold, and at the same time determines whether the number of samples in the cooling zone is higher than the threshold;

[0053] Specifically, step one also includes: inputting a quantity threshold s0 in advance in the control module, and step two also includes: the sorting module 2 counts the number s of sampling tubes in the heating zone and the cooling zone, and uploads the number s to the control module; step four also includes: the control module instructs the heating module to adjust the power to P0×tr / t2×s / s0, and the control module instructs the heating module to adjust the power to P0×tl / t1×s / s0, where tr≥t2, t1≤t1, and P0 is a pre-input constant;

[0054] When s is larger, it means that the number of sampling tubes in the heating zone or cooling zone is larger. When heating or cooling to the same temperature, more heat needs to be absorbed or dissipated, and the power of the heating module or cooling module 3 is required to be larger. At this time, the value of P0×tr / t2×s / s0 or P0×tl / t2×s / s0 is larger. When the number of sampling tubes is large and the required heating power or cooling power is large, the power of the cooling module 3 or the heating module is increased;

[0055] Similarly, when s is smaller, it means that the number of sampling tubes in the heating zone or cooling zone is smaller. When heating or cooling to the same temperature, less heat needs to be absorbed or dissipated, and the required power of the heating module or cooling module 3 is smaller, and no additional power consumption is required. At this time, the value of P0×tr / t2×s / s0 or P0×tl / t2×s / s0 is smaller, which is completed when the number of sampling tubes is small and the required heating power or cooling power is small. When the power consumption is reduced, the power of the cooling module 3 or the heating module is reduced.

[0056] By making the sorting module 2 count the number of sampling tubes in the heating zone and the cooling zone, the control module increases the heating power when the number of samples in the heating zone is higher than the threshold, and increases the cooling power when the number of samples in the cooling zone is higher than the threshold, thereby further improving the temperature control efficiency.

[0057] In the above process, the refrigeration module 3 releases waste heat during operation, and this waste heat can be used by the heating module to heat the sampling tube. Therefore, step 4 includes: the control module determines whether the heat release of the refrigeration module 3 is higher than that of the heating module, and when the judgment result is that the waste heat outlet 32 ​​of the refrigeration module 3 is instructed to open the connecting pipe with the heating module 4;

[0058] Specifically, the waste heat release end of the refrigeration module 3 is provided with a heat conduction component, which includes a connecting pipe. The heat of the heat conduction component passes through the connecting pipe. A valve is provided in the connecting pipe. The valve controls the opening and closing of the connecting pipe. The control module controls the opening and closing of the connecting pipe by controlling the opening and closing of the valve, thereby controlling the heat transfer of the heat conduction module.

[0059] In the judgment process, the control module judges whether Pl×(1-η)×c is greater than Pr×c, and when the judgment result is to instruct the waste heat outlet 32 ​​of the refrigeration module 3 and the connecting pipe of the heating module 4 to be opened, where c is the propagation coefficient input in advance, and η is the thermal efficiency of the refrigeration module 3;

[0060] Pl×η is the power that can be used for cooling when the cooling module 3 works at the power of Pl, Pl×(1-η) represents the waste heat power, and Pl×(1-η)×c represents the power that can be transferred to the heating module after passing through the heat transfer module. For example, when 0.5 units of waste heat reach the heating module after 1 unit of waste heat is transferred, c=0.5;

[0061] When Pl×(1-η)×c is greater than Pr×c, it means that the heat of the cooling module 3 is much higher than that of the heating module, and the heat of the waste heat of the cooling module 3 passing through the heat conduction component is still greater than the heat released by the heating module. At this time, when the connecting pipe is opened, the heat is still transferred from the waste heat release end of the cooling module 3 to the heating module. At this time, the control module instructs the connecting pipe to open, and the heat is transferred from the waste heat release end of the cooling module 3 to the heating module to assist the heating of the heating module;

[0062] When Pl×(1-η)×c is less than Pr×c, the heat of the waste heat of the refrigeration module 3 passing through the heat conduction component is still greater than the heat released by the heating module. At this time, when the connecting pipe is opened, the heat will be transferred from the heating module to the refrigeration module 3, resulting in heat loss of the heating module. At this time, the control module instructs the connecting pipe to close to prevent heat loss;

[0063] By making the control module open the pipe connecting the waste heat outlet 32 ​​of the refrigeration module 3 and the heating module 4 when the heat release of the refrigeration module 3 is higher than that of the heating module and the judgment result is to instruct the refrigeration module 3 to open the pipe, the waste heat of the refrigeration module 3 is used to assist the heating of the heating module when the waste heat of the refrigeration module 3 is greater than the heat generated by the heating module, and the heat loss of the heating module is prevented when the waste heat of the refrigeration module 3 is less than the heat generated by the heating module, thereby reducing the energy consumption of the heating module and improving the temperature control efficiency of the heating module.

[0064] In the process of the above-mentioned heating module utilizing waste heat, its own power consumption can be appropriately reduced when waste heat is used for auxiliary heating, thereby further reducing energy consumption. To this end, step 4 also includes: when the control module instructs the waste heat outlet 32 ​​of the refrigeration module 3 to open the connecting pipe with the heating module 4, the power of the heating module 4 is corrected downward;

[0065] Specifically, step 4 also includes: when the control module instructs the waste heat outlet 32 ​​of the refrigeration module 3 to open the connecting pipe with the heating module 4, the heating module power Pl is adjusted to P0×tl / t2-A1, where A1=Pl×(1-η)×c×d, and d is a pre-input correction coefficient;

[0066] Specifically, d is the coefficient of the waste heat transferred to the heating module that cannot be used for the heating part. For example, when 0.3 units of the remaining 1 unit of waste heat after being transferred through the heat conduction module can be used for heating by the heating module, d=0.3, Pl×(1-η)×c-Pr×c represents the difference in heat release power between the waste heat of the refrigeration module 3 and the heating module, A1=Pl×(1-η)×c×d represents the power that can be used for the heating module. At this time, the power of the heating module can be reduced by A1 accordingly. Therefore, when the control module instructs the heating module power Pl to be adjusted to P0×tl / t2-A1, the appropriate reduction of its own power consumption during waste heat auxiliary heating is completed, thereby further reducing energy consumption.

[0067] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A method for detecting snack microorganisms, characterized in that: The following steps are involved: Step 1: putting several samples of several kinds of food into several sampling tubes respectively, and putting the several sampling tubes into the heating area and the cooling area of ​​the sorting module of the intelligent heating device respectively; Step 2: The sorting module counts the average temperature of the samples in the sampling tubes of the heating zone and the cooling zone and uploads the temperature data to the control module, which determines whether the average temperature of the samples in the heating zone is lower than the threshold value and whether the average temperature of the samples in the cooling zone is higher than the threshold value; Step 3: The sorting module sends several sampling tubes in the heating zone to the heating module and the cooling module; Step 4: The heating module and the cooling module heat a plurality of sampling tubes respectively. When the control module determines that the average temperature of the samples in the heating zone is lower than the threshold, the power of the heating module is increased; when the control module determines that the average temperature of the samples in the cooling zone is higher than the threshold, the power of the cooling module is increased; Step 5: Test the heated or cooled samples.

2. The method for detecting snack microorganisms according to claim 1, characterized in that: The step one also includes: pre-inputting a temperature threshold interval [t1, t2] in the control module; the step two also includes: the sorting module counting the average temperature tr of the samples in the heating zone and the average temperature tl of the samples in the cooling zone and uploading the temperature data to the control module; the step four also includes: the control module instructs the heating module power Pr to be adjusted to P0×t2 / tr, and the control module instructs the heating module power Pl to be adjusted to P0×t1 / tl, wherein tr≥t2, t1≤t1, and P0 is a pre-input constant.

3. The method for detecting snack microorganisms according to claim 2, characterized in that: The step 2 also includes: the sorting module counts the number of sampling tubes in the heating zone and the cooling zone, and uploads the quantity data to the control module, and the control module determines whether the number of samples in the heating zone is higher than a threshold value, and whether the number of samples in the cooling zone is higher than a threshold value.

4. The method for detecting snack microorganisms according to claim 3, characterized in that: The step one also includes: pre-inputting a quantity threshold s0 in the control module; the step two also includes: the sorting module counting the number s of sampling tubes in the heating zone and the cooling zone, and uploading the number s to the control module; the step four also includes: the control module instructs the heating module to adjust the power to P0×t2 / tr×s / s0, the control module instructs the heating module to adjust the power to P0×tl / t1×s / s0, wherein tr≥t2, t1≤t1, and P0 is a pre-input constant.

5. The method for detecting snack microorganisms according to claim 4, characterized in that: The step 4 includes: the control module determines whether the heat release of the cooling module is higher than that of the heating module, and when the determination result is, instructs the waste heat outlet of the cooling module to open the connecting pipe with the heating module.

6. The method for detecting snack microorganisms according to claim 5, characterized in that: The step four also includes: the control module determines whether Pl×(1-η)×c is greater than Pr×c, and when the judgment result is to instruct the waste heat outlet of the refrigeration module and the connecting pipe of the heating module to open, wherein c is the propagation coefficient input in advance, and η is the thermal efficiency of the refrigeration module.

7. The method for detecting snack microorganisms according to claim 1, characterized in that: The step 4 also includes: when the control module instructs the waste heat outlet of the refrigeration module to open the connecting pipe with the heating module, the power of the heating module is corrected downward.

8. The method for detecting snack microorganisms according to claim 1, characterized in that: The step four also includes: when the control module instructs the waste heat outlet of the refrigeration module to open the connecting pipe with the heating module, the heating module power Pl is adjusted to P0×tl / t2-A1, where A1=Pl×(1-η)×c×d, and d is a pre-input correction coefficient.

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