Constant-temperature soaking control method and device for rolled food materials

Abstract

The invention relates to the technical field of soaking control, and discloses a constant-temperature soaking control method and device for rolled food materials, the method is based on a soaking plate above the liquid level in a soaking pool, the temperature of soaking liquid is obtained through a first temperature sensor, the heating power is adjusted according to temperature difference ratio positive correlation, and the constant temperature is accurately maintained; the driving device is controlled to infiltrate the soaking plate through a starting instruction, then the soaking material is moved to the plate and infiltrated, soaking is completed according to the first duration and the second duration, and then the soaking plate is directly rolled. According to the method, the problems of water temperature fluctuation and inconsistent time of manual soaking are solved, uneven softening, breakage or toughness losing of materials are avoided, the processing flow is simplified, the soaking quality, the processing efficiency and the consistency of the quality of finished products are remarkably improved, and the device executes the method and is suitable for being applied to the fields of families, catering and prefabricated dishes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soaking control, and in particular to a constant-temperature soaking control method and device for a rolled food material. BACKGROUND

[0002] In a low-fat shrimp and crab stick Vietnamese roll sandwich, Vietnamese spring roll wrappers are used. The Vietnamese spring roll wrapper is a kind of rolled food material made of rice flour and tapioca starch as main raw materials through processes such as grinding, pulping, spreading, steaming and drying. It has a thin and tough texture, high transparency and natural rice aroma. After rolling, it can be eaten raw or heated for a short time. It is widely used in family dining tables, catering enterprises and pre-prepared food fields. The Vietnamese spring roll wrapper needs to be soaked before use, and must be soaked at a constant temperature. If the spring roll wrapper is directly used in a dry state, it will easily break and cannot be rolled. The soaking temperature is a key factor. If the temperature is too low, the spring roll wrapper will soften slowly and unevenly, and will easily break during subsequent rolling. If the temperature is too high, the spring roll wrapper will soften too much and lose its toughness, making it difficult to shape. Currently, the soaking operation of the Vietnamese spring roll wrapper is generally completed manually. The operator needs to add an appropriate amount of water in a container, and then measure the water temperature with a thermometer. If the water temperature does not meet the requirements, hot or cold water needs to be manually added for adjustment. During the adjustment process, the water temperature is prone to fluctuation, which greatly interferes with the soaking process, making it difficult to stabilize the soaking temperature within the appropriate range. At the same time, the soaking time is determined by experience, and each time the soaking time is different, so the soaking effect needs to be improved. SUMMARY

[0003] In order to improve the soaking effect of the Vietnamese spring roll product, the present application provides a constant-temperature soaking control method and device for a rolled food material.

[0004] In a first aspect, the present application provides a constant-temperature soaking control method for a rolled food material, which adopts the following technical solution: A constant-temperature soaking control method for a rolled food material, comprising the following steps: Based on a soaking plate for placing the soaking material, the soaking plate is located above the liquid level of the soaking liquid in the soaking pool, and the soaking pool is provided with a driving device that covers the soaking plate surface with the soaking liquid; Based on a first temperature sensor arranged in the soaking pool, the liquid temperature value of the soaking liquid is obtained. If the liquid temperature value is less than the preset soaking temperature value, the soaking liquid is heated. The difference between the liquid temperature value and the soaking temperature value is calculated as a temperature difference value. The temperature difference value and the preset reference difference value are used to calculate a temperature difference ratio. The heating power is controlled in positive correlation with the temperature difference ratio. Otherwise, the heating power is set to zero. Based on the preset starting instruction, the driving device starts working to soak the soaking plate, the driving device stops working and resets, and the soaking material is moved to the soaking plate; after the heating power is set to zero, the driving device is started to soak the soaking liquid to the surface of the soaking material; after the soaking lasts for a preset first duration, the driving device stops working and resets, so that the soaking material lasts for a duration of soaking of at least a preset second duration, wherein the first duration is contained in the second duration; The rolling operation of the soaking material is completed on the soaking plate.

[0005] By adopting the above technical scheme, the constant-temperature soaking control method can accurately maintain the constant-temperature state of the soaking liquid by real-time monitoring of the soaking liquid temperature by the temperature sensor and dynamic adjustment of the heating power combined with the temperature difference ratio, effectively avoiding the problems of uneven softening and easy breaking caused by too low temperature and excessive softening and loss of toughness caused by too high temperature; the driving device is used to orderly control the soaking process of the soaking plate and the soaking material, and the preset first and second durations are used to standardize the soaking period, thereby solving the problems of large water temperature fluctuation and inconsistent soaking time during manual soaking, and ensuring uniform and stable softening effect and appropriate toughness of the soaking material; at the same time, the rolling operation can be directly performed on the soaking plate after soaking, thereby simplifying the processing flow and significantly improving the soaking quality and subsequent processing efficiency of the rolled food material.

[0006] Optionally, the method further includes the following steps: Timing starts after soaking is completed, and timing is completed when the rolling operation starts, to obtain a waiting duration; If the waiting duration is greater than a preset warning duration, an abnormal soaking prompt is given; An average value of a plurality of waiting durations is calculated, a warning ratio is calculated according to the average value and the warning duration, and the second duration is adjusted according to the negative correlation of the warning ratio.

[0007] By adopting the above technical scheme, the problems of water loss, dryness, excessive water absorption, loss of toughness, etc. of the rolled food material after soaking due to long storage time are effectively avoided, and the adaptability of the material for subsequent rolling is ensured; at the same time, by calculating the average value of a plurality of waiting durations and adjusting the second duration according to the negative correlation of the warning ratio, the rolling rhythm difference in actual processing can be dynamically adapted, the total soaking duration can be flexibly optimized, and the influence of inconsistent waiting time on soaking effect of different batches is compensated.

[0008] Optionally, the method further includes the following steps: A second temperature sensor is arranged on the soaking plate, the second temperature sensor is controlled to collect the temperature on the soaking plate to generate a plate body temperature value in response to a starting instruction, and if the plate body temperature value is less than the soaking temperature value, the driving device is controlled to start working to soak the soaking liquid into the soaking plate; The difference between the soaking temperature value and the plate temperature is the plate temperature difference, and the plate temperature ratio is calculated according to the plate temperature difference and the preset set difference value; the soaking time in the soaking step is adjusted according to the positive correlation of the plate temperature ratio, or the control coefficient of the heating power is adjusted according to the positive correlation of the plate temperature ratio.

[0009] By adopting the above technical solutions, the uneven softening of the local area of the rolled food material contacting the plate body caused by the temperature difference between the plate body and the soaking liquid can be avoided, and the consistency of the overall softening effect of the material is ensured; at the same time, the plate temperature ratio is calculated by the plate temperature difference and the set difference value, and then the soaking time or the heating power control coefficient is dynamically adjusted, which can accurately adapt to the fluctuation difference of the plate body temperature, specifically compensate for the influence of the temperature deviation on the soaking effect, further optimize the accuracy of constant temperature soaking, and make the softening degree of the rolled food material more uniform and the toughness more suitable.

[0010] Optionally, the soaking plate position is fixed in the soaking pool, the driving device includes a pumping assembly, the bottom of the soaking pool is provided with a water suction port, the side wall of the soaking pool is provided with a water outlet port aligned with the soaking plate, the pumping assembly extracts the soaking liquid at the water suction port and sprays it to the soaking plate at the water outlet port; the driving device further includes a spraying assembly, the spraying assembly is arranged above the soaking pool and aligned with the soaking plate, the water inlet of the spraying assembly is connected with the water outlet of the pumping assembly, and the spraying pressure or the spraying caliber of the spraying assembly is adjusted according to the negative correlation of the plate temperature ratio; Or, the soaking plate position is lifted and moved in the soaking pool, the driving device includes a lifting assembly connected between the soaking pool and the soaking plate, when the lifting assembly drives the soaking plate to be located at the lowest position in the soaking pool, the soaking plate is below the soaking liquid surface, and when the lifting assembly drives the soaking plate to be located at the highest position in the soaking pool, the soaking plate is above the soaking liquid surface; the lowest position of the soaking plate in the soaking pool is adjusted according to the positive correlation of the second time length, or the action speed of the lifting assembly is adjusted according to the negative correlation of the second time length.

[0011] By adopting the above technical solutions, firstly, the pumping assembly is used to realize the circulation of the soaking liquid and accurately spray the soaking plate through the water outlet port, and the spraying pressure or caliber of the spraying assembly is dynamically adjusted according to the plate temperature ratio, which can be specifically adapted to the temperature difference of the plate body, and the soaking plate and the material are soaked more uniformly and accurately; secondly, the lifting assembly drives the soaking plate to be lifted, and the lowest position of the soaking plate or the lifting action speed is flexibly adjusted according to the second time length, which can accurately control the soaking depth and soaking rhythm of the material according to the soaking requirements, and both designs can adapt to different processing scenes and soaking requirements, further improve the controllability and flexibility of constant temperature soaking, ensure that the rolled food material is uniformly softened and the toughness meets the standard, and optimize the utilization efficiency and processing adaptability of the soaking liquid, providing more comprehensive protection for subsequent rolling operation and product quality stability.

[0012] Optionally, the step of heating the soaking liquid further includes the following substeps: The ratio of the soaking temperature value and the liquid temperature value is a temperature ratio, if the temperature ratio is greater than a preset force ratio, a driving device is started, and the driving power of the driving device is adjusted according to the positive correlation of the temperature ratio; If the driving device includes a pumping assembly, the pumping flow is positively correlated with the driving power; if the driving device includes a lifting assembly, the lifting frequency is positively correlated with the driving power or the lifting speed is positively correlated with the driving power.

[0013] By adopting the above technical solution, in the soaking liquid heating stage, by calculating the temperature ratio and comparing it with the force ratio, when the temperature difference is large, the driving device is automatically started, and the driving power is positively correlated with the temperature ratio. For the pumping assembly and the lifting assembly, the pumping flow is increased, and the lifting frequency or speed is adjusted. The circulation flow of the soaking liquid or the contact frequency of the soaking plate and the soaking liquid is accelerated, the heat is quickly and uniformly dispersed, the temperature imbalance caused by local heating is avoided, and the universality of the scheme is enhanced. This not only speeds up the speed of the soaking liquid reaching the preset temperature, but also further guarantees the stability and uniformity of the heating process, provides more efficient temperature protection for the uniform softening and maintaining of the suitable toughness of the rolled food material, and further improves the reliability and processing efficiency of the soaking effect.

[0014] Optionally, the method further includes the following steps: The photoelectric detection module is arranged on the soaking plate, and the photoelectric detection module is used to collect the light transmittance of the soaking material to generate a light transmittance value. After the soaking material is soaked and before rolling, the latest light transmittance value is obtained, if the light transmittance value is less than a preset light transmittance reference value, the rolling is delayed, and the ratio of the light transmittance reference value and the light transmittance value is a light transmittance ratio, and the second time length is adjusted according to the positive correlation of the light transmittance ratio.

[0015] By adopting the above technical solution, by arranging the photoelectric detection module on the soaking plate, the light transmittance of the soaking material is collected to generate the light transmittance value, the softening degree of the material is directly reflected by the light transmittance, and the problem of insufficient softening of individual materials caused by only relying on temperature and time control is avoided. When the light transmittance value is lower than the preset reference value, the second time length is adjusted according to the positive correlation of the light transmittance ratio, and the material that is not sufficiently softened can be targeted for re-soaking, so that each piece of rolled food material can reach the appropriate softening state. This further improves the accuracy and individualized adaptability of the soaking effect, effectively avoids problems such as rolling breakage and molding difficulty caused by uneven or insufficient material softening, and provides more comprehensive protection for the uniformity and stability of the product quality, while reducing material waste.

[0016] Optionally, the method further includes the following steps: At the set soaking times, a change trend value of the corresponding plurality of light transmission values is calculated, and the first time length is adjusted in positive correlation according to the change trend value; wherein, the light transmission value gradually increases, and the change trend value is a negative value; the light transmission value gradually decreases, and the change trend value is a positive value.

[0017] By adopting the technical solution, the batch difference of the material or the change in softening characteristics in the multiple soaking processes can be dynamically adapted; when the softening speed is accelerated, the first time length is shortened to avoid over-softening; when the softening speed is slowed down, the first time length is lengthened to ensure sufficient softening.

[0018] Optionally, an image detection module for aligning the soaking plate is arranged beside the soaking pool, and the image detection module is used to capture the image on the soaking plate, extract the soaking material, and generate a soaking image; When the soaking material is soaked and before being rolled, the latest soaking image is obtained, and a difference value between the soaking image and a preset template image is calculated; wherein, the template image is a standard image of the soaking material after being soaked. If the difference value is greater than a preset difference reference value, the rolling is delayed, a difference ratio value of the difference value and the difference reference value is calculated, and the second time length is adjusted in positive correlation according to the difference ratio value.

[0019] By adopting the technical solution, the image detection module is arranged beside the soaking pool, the soaking material on the soaking plate is captured and a soaking image is generated, and the difference value between the soaking image and the preset standard template image is calculated, so that the actual soaking effect of the material can be accurately judged in a visual manner, and the limitation of single reliance on temperature, time or light transmission detection is overcome; when the difference value exceeds the reference value, the rolling is delayed, and the second time length is adjusted in positive correlation according to the difference ratio value, so that the soaking of the material that does not meet the standard can be targeted, and the rolling failure or product quality defects caused by uneven softening and abnormal shape can be effectively avoided.

[0020] Optionally, the method further includes the following steps: At the set soaking times, a difference trend value of the corresponding plurality of difference values is calculated, and the first time length is adjusted in positive correlation according to the difference trend value; wherein, the difference value gradually increases, and the difference trend value is a positive value; the difference value gradually decreases, and the difference trend value is a negative value.

[0021] By adopting the technical solution, the difference trend value of the plurality of difference values is calculated after the set soaking times, the batch dynamic change of the soaking effect of the rolling food material is accurately captured, and the first time length is adjusted in positive correlation accordingly, so that a dynamic negative feedback adjustment mechanism driven by image recognition is formed; when the difference trend value is positive, the first time length is lengthened to strengthen the soaking effect; when the difference trend value is negative, the first time length is reasonably optimized to avoid over-soaking, and the batch characteristic fluctuation of the material or the slight change in the processing environment can be effectively adapted.

[0022] In a second aspect, the application provides a constant-temperature soaking control device for rolled food material, which adopts the following technical scheme: A constant-temperature soaking control device for rolled food material, comprising a processor, wherein the processor executes the steps of the constant-temperature soaking control method for rolled food material according to any one of the above.

[0023] In summary, the application has at least one of the following beneficial technical effects: the temperature sensor is used to monitor the soaking liquid in real time, and the heating power is dynamically adjusted according to the temperature difference ratio, so that the soaking liquid is precisely controlled at a constant temperature, and the problems of large water temperature fluctuation, uneven softening or over-softening in traditional manual soaking are solved from the root; the multi-dimensional detection mechanism and dynamic closed-loop adjustment logic are used to accurately determine the soaking state of each batch of materials through light transmittance and image detection, and to supplement the soaking accordingly, and to dynamically optimize the soaking time and driving parameters by analyzing the trend value to adapt to the batch difference of materials and the change of processing environment, so that each piece of material can reach the standard state of uniform softening and appropriate toughness; meanwhile, two driving device designs are provided to adapt to different scenes, considering the uniformity of infiltration and the flexibility of processing, and the materials can be directly rolled on the soaking plate after soaking, which simplifies the processing flow and effectively reduces the material waste and the failure rate of rolling. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A flowchart of steps of a constant-temperature soaking control method for rolled food material.

[0025] Figure 2 A constant-temperature soaking device for rolled food material, which adopts a structural schematic view of a pumping assembly.

[0026] Figure 3 A constant-temperature soaking device for rolled food material, which adopts a structural schematic view of a lifting assembly.

[0027] Reference signs: 1, soaking pool; 2, soaking plate; 3, pumping assembly; 4, soaking material; 5, lifting assembly; 6, spraying assembly. DETAILED DESCRIPTION

[0028] The embodiments of the application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings.

[0029] In the description of the present specification, the description referring to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example" or "some examples" means that the particular feature, structure, material or characteristic being described in connection with the embodiment or example is included in at least one embodiment or example of the application. The illustrative appearances of the above-mentioned terms in the description are not necessarily referring to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0030] The embodiment of the present application discloses a constant temperature soaking control method for rolled food materials, referring to Figure 1 , Figure 2 and 3, the embodiment takes Vietnamese spring roll wrappers as the rolled food materials, and the constant temperature soaking control device for the rolled food materials comprises a soaking pool 1, a soaking plate 2, a driving device, a first temperature sensor and a heating assembly. The soaking pool 1 is a cuboid structure, with a volume of 5-10L, and contains clean water as the soaking liquid; the soaking plate 2 is made of a food-grade stainless steel mesh plate with a pore size of 2mm, is horizontally arranged in the soaking pool 1 and close to the liquid level of the soaking liquid, and has a spacing of no more than 1cm, so as to facilitate rapid soaking and avoid liquid splashing; the first temperature sensor is installed at the middle part of the soaking pool 1 and away from the heating assembly, so as to avoid local temperature interference and collect the soaking liquid temperature in real time; and the heating assembly is an electric heater with a power adjustment range of 50-300W and is electrically connected with the first temperature sensor.

[0031] Referring to Figure 1 , the method comprises the following steps: Based on the soaking plate 2 for placing the soaking materials 4, the soaking plate 2 is located above the liquid level of the soaking liquid in the soaking pool 1, the soaking pool 1 is provided with the driving device, and the driving device makes the soaking plate 2 surface cover the soaking liquid. Clean water is injected into the soaking pool 1 to a preset liquid level, the soaking temperature value is set to 28℃, which is the best softening temperature of the Vietnamese spring roll wrappers, the preset reference difference is 5℃, the first time length is set to 3 seconds, the second time length is set to 6 seconds, the first time length is contained in the second time length, and the additional 3 seconds are the buffer time of the reset speed and the natural water flow; and the reset speed is set to 5cm / s.

[0032] The liquid temperature value of the soaking liquid is obtained based on a first temperature sensor arranged in the soaking pool 1. If the liquid temperature value is less than a preset soaking temperature value, the soaking liquid is heated. The difference between the liquid temperature value and the soaking temperature value is calculated as a temperature difference value. A temperature difference ratio value is calculated based on the temperature difference value and a preset reference difference value. The heating power is controlled in positive correlation with the temperature difference ratio value. Otherwise, the heating power is set to zero. The first temperature sensor obtains the liquid temperature value of the soaking liquid in real time. If the detected liquid temperature value is 22℃, which is less than 28℃, the temperature difference value is calculated as 6℃, and the temperature difference ratio value = 6℃ / 5℃ = 1.2. The heating power is adjusted to 240W in positive correlation with the ratio value. The greater the temperature difference, the higher the heating power. When the liquid temperature value reaches 28℃, the heating power is set to zero, and the constant temperature state is maintained.

[0033] Based on a preset starting instruction, the driving device starts to work to soak the soaking plate 2. The driving device stops working and resets. The soaking material 4 is moved to the soaking plate 2. After the heating power is set to zero, the driving device is started to make the soaking liquid soak to the surface of the soaking material 4. After the soaking lasts for a preset first duration, the driving device stops working and resets, so that the soaking material 4 lasts for at least a preset second duration. The preset starting instruction is sent by manually triggering a button. The driving device (pumping assembly 3) starts to work to extract clean water from the water outlet at the bottom of the soaking pool 1 and spray the clean water to the soaking plate 2 through the side wall water outlet. After the soaking plate 2 is soaked for 10 seconds, the driving device stops working and resets. The Vietnamese spring roll skin is laid on the soaked soaking plate 2. After confirming that the heating power is set to zero, the pumping assembly 3 is started again to make the clean water uniformly soak the surface of the spring roll skin. After the soaking lasts for 3 seconds (the first duration), the pumping assembly 3 stops working and resets. The spring roll skin lasts for 6 seconds (the second duration) on the soaking plate 2 to complete the full softening. The soaking means the spring roll skin in water, and the soaking means that the spring roll skin still hangs water after coming out of the water.

[0034] The rolling operation of the soaking material 4 is completed on the soaking plate 2. After the soaking is completed, the low-fat shrimp and crab meat are directly placed on the soaking plate 2 as stuffing to roll the softened Vietnamese spring roll skin. The material does not need to be transferred, so that the spring roll skin is prevented from being broken due to the movement.

[0035] The embodiment realizes the constant-temperature precise soaking of the Vietnamese spring roll skin through the above steps. The linkage control of the first temperature sensor and the heating power reduces the temperature fluctuation of the soaking liquid, and avoids the temperature deviation of the traditional manual soaking. The orderly soaking of the driving device and the fixed duration ensure that the spring roll skin is uniformly softened and has appropriate toughness without breaking or losing toughness. The design of directly rolling after the soaking simplifies the processing flow and improves the processing efficiency.

[0036] In order to reduce the influence of the fluctuation of the waiting duration from the completion of the soaking to the rolling on the soaking effect, the specific steps further include the following steps: On the basis of the core device, a timing module and an abnormality prompting module are added: the timing module is integrated in the processor and electrically connected with the driving device, and is used for recording the time interval from the completion of soaking (the second reset of the driving device) to the start of rolling operation, i.e. the waiting time length; the abnormality prompting module adopts an audible and visual alarm installed at an eye-catching position outside the soaking pool 1 and is signal-connected with the processor, and is used for triggering the soaking abnormality early warning.

[0037] Based on the parameters of the foregoing embodiment, a preset early warning time length of 10 seconds is added, which is adapted to the best rolling window period of the Vietnamese spring roll skin after soaking, and a statistical sample size of 10 times is set, i.e. the average value of the waiting time length of 10 batches of continuous collection is calculated to ensure the adjustment stability.

[0038] The timing starts after the completion of soaking and is completed when the rolling operation starts, and the waiting time length is obtained; the timing module automatically starts timing after the completion of the second time length (6 seconds) of soaking of each batch of spring roll skin; the timing module stops timing when the operator starts the rolling operation, and the waiting time length of the batch is generated, for example, the waiting time length of a batch is 25 seconds, and that of another batch is 8 seconds.

[0039] If the waiting time length is greater than the preset early warning time length, the soaking abnormality prompting is performed; if the waiting time length of a batch is greater than the preset early warning time length, i.e. 10 seconds, such as the batch of 25 seconds described above, the processor immediately controls the audible and visual alarm to start, issues a 3-second continuous beeping prompt and red light flashing, and reminds the operator to timely roll to avoid the spring roll skin being excessively soft and sticky.

[0040] The average value of a plurality of waiting time lengths is calculated, the early warning ratio is calculated according to the average value and the early warning time length, and the second time length is adjusted according to the negative correlation of the early warning ratio. After 10 batches of soaking-rolling operations are continuously completed, the processor automatically calculates the average value of the 10 waiting time lengths. Assuming that the waiting time lengths of 10 times are 2.5 seconds, 1.8 seconds, 2.2 seconds, 1.9 seconds, 2.3 seconds, 2.1 seconds, 1.7 seconds, 2.4 seconds, 2.0 seconds and 1.6 seconds, the average value is (2.5+1.8+2.2+1.9+2.3+2.1+1.7+2.4+2.0+1.6) / 10=2.05 seconds.

[0041] The early warning ratio=average value of waiting time length / early warning time length=2.05 seconds / 10 seconds=0.205, according to the logic of "the second time length is adjusted in negative correlation with the early warning ratio", the original second time length is 6 seconds, and the second time length is adjusted to 6.2 seconds because the early warning ratio is less than 1. The second time length increases more as the early warning ratio is more efficient. If the average value is 11 seconds and the early warning ratio is 1.1, the second time length is adjusted to 5.8 seconds, which is adapted to the actual rolling rhythm; the specific adjustment is obtained in a matching manner, which is obtained according to a large number of experiments.

[0042] Through the monitoring and dynamic adjustment of the waiting time, the problem of "waiting for disorder after soaking" in traditional processing is effectively avoided: the abnormal prompt module reduces the probability of spring roll wrapper timeout waiting and reduces the phenomenon of excessive water absorption; the second time negative correlation adjustment mechanism makes the total soaking time accurately match the actual rolling rhythm, so that the softening adaptability of the spring roll wrapper remains consistent even if the waiting time fluctuation range of different batches is reduced, the subsequent rolling formation rate is improved, and the fault tolerance and product quality stability of the processing flow are further improved.

[0043] In order to further improve the accuracy of constant temperature soaking, the following steps are included: A second temperature sensor is added, which can be a food-grade PT100 patch-type temperature sensor; 4 collection points are evenly arranged along the length direction of the soaking plate 2 (stainless steel mesh plate) with a spacing of 10 cm, the sensor probe is attached to the upper surface of the plate body without protruding the mesh holes, avoiding hindering the flow of soaking liquid and material placement, the data of the 4 collection points are weighted and averaged by the processor to obtain the final plate body temperature value, ensuring the detection accuracy. In addition, a parameter intelligent adjustment module is added: integrated in the main control processor, real-time signal connection with the second temperature sensor, driving device and heating component, functions include: receiving plate temperature data, calculating plate temperature related ratio, selecting adjustment mode (soaking time / heating power control coefficient) according to preset logic, outputting adjustment instruction, realizing targeted compensation of temperature deviation.

[0044] Based on the soaking temperature value set to 28℃ (the best softening temperature of Vietnamese spring roll wrapper), the first time is 3 seconds and the second time is 6 seconds; new adaptive parameters are added: the preset set difference is 4℃ (a reasonable temperature difference threshold determined based on the heat conduction characteristics of spring roll wrapper), the soaking time basic value is 3 seconds, the heating power control coefficient initial value is 1.0, and the control coefficient adjustment interval is 0.9-1.3, which not only ensures the compensation effect, but also avoids the efficiency decline caused by overheating power or too long soaking time.

[0045] After the operator sends the start instruction through the control panel, the processor immediately triggers the second temperature sensor to start, and the 4 collection points synchronously collect the plate body temperature, for example: when the environment temperature is 20℃, the first start, the collected data is 23℃, 22.8℃, 23.2℃, 22.9℃, the weighted average generates the plate body temperature value 22.97℃, about 23℃.

[0046] The processor compares the plate body temperature value with the preset soaking temperature value 28℃, if the plate body temperature value < soaking temperature value, such as 23℃ < 28℃, it is determined that plate preheating compensation is needed, and immediately sends a start signal to the driving device to trigger the soaking plate 2 soaking operation.

[0047] The difference between the soaking temperature value and the plate body temperature is the plate body temperature difference, and the plate temperature ratio is calculated according to the plate body temperature difference and the preset set difference value; the soaking time is adjusted according to the positive correlation of the plate temperature ratio, or the control coefficient of the heating power is adjusted according to the positive correlation of the plate temperature ratio.

[0048] The plate body temperature difference = the preset soaking temperature value - the plate body temperature value; the plate temperature ratio = the plate body temperature difference / the preset set difference value; Adjustment mode one (soaking time positive correlation adjustment): suitable for the scene where the plate body temperature is slightly lower than the soaking temperature and needs to be preheated gently.

[0049] Example 1: plate body temperature 26℃, plate body temperature difference = 28℃-26℃=2℃, plate temperature ratio = 2℃ / 4℃=0.5; according to the logic of adjusting the soaking time positively according to the plate temperature ratio, the soaking time = the basic value (3 seconds) × (1 + the plate temperature ratio) = 3 seconds × 1.5 = 4.5 seconds; the driving device (pumping assembly 3) sprays the soaking liquid to the soaking plate 2 for 4.5 seconds, realizing the plate body temperature and preheating; Example 2: plate body temperature 24℃, plate body temperature difference = 4℃, plate temperature ratio = 1.0, soaking time = 3 seconds × 2.0 = 6 seconds, extending the soaking time to ensure that the plate body temperature approaches the soaking liquid temperature; Adjustment mode two (heating power control coefficient positive correlation adjustment): suitable for the scene where the plate body temperature is significantly lower than the soaking temperature and needs to be quickly compensated.

[0050] Example: when the environment is low temperature 15℃, the plate body temperature is 21℃, the plate body temperature difference = 7℃, the plate temperature ratio = 7℃ / 4℃=1.75; according to the logic of adjusting the heating power control coefficient positively according to the plate temperature ratio, the control coefficient = the initial value (1.0) + (the plate temperature ratio-0.5) × 0.4 = 1.0 + (1.75-0.5) × 0.4 = 1.5, which exceeds the upper limit of 1.3, and finally takes 1.3; In the core process, the first temperature sensor detects the soaking liquid temperature 22℃, the temperature difference value = 6℃, the temperature difference ratio = 6℃ / 5℃=1.2, the preset reference difference value 5℃ in the foregoing embodiment, the original heating power = 300W × 1.2 = 360W, which exceeds the upper limit of 300W, and after the control coefficient adjustment, the actual heating power = 300W × 1.2 × 1.3 = 468W, which is in the safe interval, and the maximum rated power of the heating assembly is 500W, 468W is in the safe interval, by increasing the heating power to accelerate the soaking liquid temperature rise, and by means of soaking liquid soaking to realize the plate body rapid heat conduction, the temperature deviation compensation time is shortened.

[0051] Adjustment priority: the processor defaults to adopt the soaking time adjustment, when the plate temperature ratio > 1.5, automatically switches to the heating power control coefficient adjustment, and takes into account the preheating effect and energy efficiency.

[0052] After the adjustment of the soaking time or the heating power control coefficient is completed, the driving device operates according to the adjusted parameters, or the heating assembly operates according to the adjusted power. The subsequent processes of “material placement (Vietnamese spring roll wrapper laid flat) → material soaked in soaking liquid → first soaking time → driving device reset → second soaking time → rolling operation” are performed according to the process of the embodiment, to ensure the continuity and consistency of the processing process. After each batch of processing is completed, the second temperature sensor automatically resets the data, to prepare for the next batch of detection.

[0053] The embodiment adopts two types of differentiated driving devices: Referring to Figure 2 , the first type is fixed soaking plate 2 + pumping-spraying assembly 6 Pumping assembly 3: A food-grade micro centrifugal pump with a rated power of 50-150 W and a flow adjustment range of 5-15 L / min is adopted, which has the characteristics of corrosion resistance and low noise. The water suction port is arranged at the center of the bottom of the soaking pool 1, and a filter screen (pore size 0.5 mm) is provided to prevent impurities from blocking. Two water outlets are symmetrically arranged on the inner side wall of the soaking pool 1, and the horizontal distance between the water outlets and the soaking plate 2 is 8 cm. The water outlet nozzles are universal adjustable, and the spray angle is 30°-60°, to ensure that the entire surface of the soaking plate 2 is covered.

[0054] Spraying assembly 6: Composed of a spraying frame and eight high-pressure atomizing nozzles, the spraying frame spans above the soaking pool 1, and the nozzles are uniformly distributed with a spacing of 5 cm and vertically aligned with the soaking plate 2. The water inlet of the spraying assembly 6 is connected to the water outlet of the pumping assembly 3 through a three-way pipe, and is equipped with a pressure sensor and an electrically adjustable valve (opening diameter adjustment range 2-8 mm) for monitoring the spray pressure and adjusting the spray diameter, respectively. The processor signal linkage realizes dynamic parameter adjustment.

[0055] Referring to Figure 3 , the second type is liftable soaking plate 2 + lifting assembly 5 Soaking plate 2: A food-grade stainless steel perforated plate (pore size 3 mm, thickness 2 mm) is adopted, which is adapted in size to the inner wall of the soaking pool 1 with a gap of ≤2 mm, to ensure smooth lifting without jamming.

[0056] Lifting assembly 5: Composed of two groups of synchronous electric push rods (rated thrust 500 N, stroke adjustment range 0-20 cm), guide rails and position sensors. The electric push rods are vertically fixed to the outside bottom of the soaking pool 1, and the top ends of the push rods are fixedly connected to the bottom of the soaking plate 2 on both sides. The guide rails are installed on the inner side wall of the soaking pool 1 to restrict the soaking plate 2 to move only in the vertical direction. The position sensor is used to feedback the height of the soaking plate 2 in real time, to ensure accurate positioning of the lowest / highest position.

[0057] Among them, for the fixed soaking plate 2 + pumping-spraying assembly 6, it is suitable for precise soaking scenarios, and the specific method is as follows: Key parameters of the preceding embodiment and plate temperature regulation scheme are used: soaking temperature value 28℃, preset set difference value 4℃, plate temperature ratio calculation logic; new spray regulation parameters: spray pressure base value 0.1MPa, spray caliber base value 5mm, plate temperature ratio and spray pressure / caliber are negatively correlated regulation relationship, regulation coefficient 0.02MPa / unit ratio, 1mm / unit ratio.

[0058] After the start instruction is triggered, the second temperature sensor collects the plate temperature and calculates the plate temperature ratio, for example: plate temperature 23℃, plate temperature difference 5℃, plate temperature ratio = 5℃ / 4℃ = 1.25; The processor controls the pumping assembly 3 to start, extracts the constant temperature soaking liquid in the soaking pool 1, a part is sprayed horizontally to the soaking plate 2 through the side wall water outlet, the flow rate is 8L / min, another part is atomized and sprayed vertically through the spraying assembly 6, the initial pressure is 0.1MPa, the caliber is 5mm, and the soaking plate 2 is synchronously infiltrated on both sides; According to the plate temperature ratio, the negative correlation regulation is performed: If the plate temperature ratio = 1.25, the plate temperature is low, and needs to be moderately and fully infiltrated, then the spray pressure is lowered to 0.1MPa-(1.25-1.0)×0.02MPa=0.095MPa, and the spray caliber is raised to 5mm+(1.25-1.0)×1mm=5.25mm, so as to improve the uniformity of infiltration by “low pressure+large caliber” combination, and avoid that the local impact force is too large to cause material damage; If the plate temperature ratio = 0.5, the plate temperature is close to the soaking temperature, and needs to be quickly and accurately infiltrated, then the spray pressure is raised to 0.1MPa+(1.0-0.5)×0.02MPa=0.11MPa, and the spray caliber is lowered to 5mm-(1.0-0.5)×1mm=4.5mm, so as to shorten the infiltration time by “high pressure+small caliber” combination, and improve the processing efficiency.

[0059] After the infiltration is completed, the pumping assembly 3 keeps low flow rate operation (5L / min), so as to ensure that the soaking plate 2 and the material surface are continuously covered with a thin liquid layer during the soaking process; after the soaking is completed, the pumping assembly 3 stops working, and the subsequent rolling operation follows the preceding process.

[0060] For the liftable soaking plate 2+lifting assembly 5, it is suitable for batch soaking scenes, and the specific method is as follows: The first time length 3 seconds, the second time length 6 seconds or the dynamic second time length after the waiting time length regulation of the preceding embodiment are used; new lifting regulation parameters: the highest position of the soaking plate 2 (5cm away from the liquid surface), the lowest position base depth (3cm below the liquid surface), and the lifting speed base value 1cm / s; the second time length and the lowest position are positively correlated, the regulation coefficient is 0.1cm / s, and the lifting speed is negatively correlated, the regulation coefficient is 0.02cm / s² / s.

[0061] After the start command is triggered, the lifting assembly 5 drives the soaking plate 2 to descend from the highest position to the lowest position basic depth, 3 cm below the liquid level, to complete the pre-wetting of the soaking plate 2, for 5 seconds; then the lifting assembly 5 drives the soaking plate 2 to rise to the highest position, and the operator lays the Vietnamese spring roll skin on the soaking plate 2; After the heating power is set to zero, the lifting assembly 5 drives the soaking plate 2 to descend to the lowest position at a basic speed of 1 cm / s, and the soaking liquid completely immerses the spring roll skin, starting the first time length (3 seconds) of soaking; According to the second time length dynamic adjustment parameter: If the second time length is extended to 7 seconds after being adjusted by the waiting time length, the soaking depth and wetting time need to be increased, so the lowest position depth is adjusted to 3 cm + (7-6) x 0.1 cm = 3.1 cm, and the lifting speed is adjusted to 1 cm / s - (7-6) x 0.02 cm / s² = 0.98 cm / s, to ensure that the material is fully softened by “increasing the soaking depth + slowing down the lifting speed”; If the second time length is shortened to 5.5 seconds, the soaking depth needs to be reduced to avoid over-softening, so the lowest position depth is adjusted to 3 cm - (6.0-5.5) x 0.1 cm = 2.95 cm, and the lifting speed is adjusted to 1 cm / s + (6.0-5.5) x 0.02 cm / s² = 1.01 cm / s, to adapt to the short time length soaking demand by “reducing the soaking depth + increasing the lifting speed”; After the first time length ends, the lifting assembly 5 drives the soaking plate 2 to rise to the highest position, and the spring roll skin is continuously wetted on the plate until the second time length ends, and then the rolling operation is directly carried out.

[0062] In order to further improve the heating efficiency and temperature uniformity, a power adjustment module and a state monitoring module are added, as follows: The power adjustment module is integrated in the main control processor, and is signal linked with the heating assembly and the driving device (pumping assembly 3 / lifting assembly 5), and the core function is to receive temperature ratio data, calculate target driving power according to preset logic, and output accurate power adjustment instructions, to ensure that the driving power and the temperature ratio are accurately matched.

[0063] The state monitoring module includes a flow sensor (adapted to the pumping assembly 3), a speed sensor (adapted to the lifting assembly 5), and a temperature distribution sensor (uniformly arranged in three collection points in the soaking pool 1), which are respectively used to monitor the pumping flow, the lifting speed, and the soaking liquid temperature distribution in real time, to feedback the adjustment effect and form a closed loop control.

[0064] The specific method is as follows: The soaking temperature value of the preceding embodiment is 28℃, the heating assembly power adjustment range is 50-300W; new adaptive parameters are added: the preset force ratio is 1.2, which is determined based on the heating characteristics of spring roll wrapper soaking liquid, and the temperature ratio exceeds this threshold value, which requires driving force; the driving power adjustment parameters are: the pumping assembly 3 driving power basic value is 80W, the adjustment coefficient is 30W / unit temperature ratio, the adjustment range is 50-150W, the lifting assembly 5 driving power basic value is 100W, the adjustment coefficient is 50W / unit temperature ratio, and the adjustment range is 50-200W; the explicit correlation logic is: the pumping flow of the pumping assembly 3 is positively correlated with the driving power, the correlation coefficient is 0.2L / (min·W), and the lifting speed of the lifting assembly 5 is positively correlated with the driving power, the correlation coefficient is 0.02cm / (s·W).

[0065] Heating force implementation of the sub-type driving device Adaptive type one: fixed soaking plate 2 + pumping assembly 3 After heating starts, the first temperature sensor collects the soaking liquid temperature value in real time, for example: the initial injection water temperature is 22℃, the soaking temperature value is 28℃, and the temperature ratio = soaking temperature value / liquid temperature value = 28℃ / 22℃≈1.27; The processor compares the temperature ratio (1.27) with the preset force ratio (1.2), and since 1.27>1.2, it is determined that driving force needs to be started, and a start instruction is sent to the pumping assembly 3; According to the “temperature ratio positive correlation adjustment driving power” logic, the target driving power = basic value (80W) + (temperature ratio-force ratio) × adjustment coefficient = 80W + (1.27-1.2) × 30W≈82.1W (rounded to 82W); The pumping assembly 3 operates at 82W power, and the corresponding pumping flow = basic flow (8L / min) + (target driving power-basic power) × correlation coefficient = 8L / min + (82-80) × 0.2L / (min·W) = 8.4L / min, the soaking liquid circulation flow is improved, and the heat diffusion is accelerated; The temperature distribution sensor monitors in real time, when the soaking liquid temperature rises to 26℃, the temperature ratio = 28 / 26≈1.08<1.2, the processor controls the pumping assembly 3 to restore the basic power 80W, and the flow returns to 8L / min, until the soaking liquid reaches 28℃, and the heating power is zero.

[0066] Adaptive type two: liftable soaking plate 2 + lifting assembly 5 After heating starts, the first temperature sensor collects the soaking liquid temperature value 20℃, and calculates the temperature ratio = 28℃ / 20℃=1.4>1.2, which triggers the driving force; The target driving power = basic value (100W) + (1.4-1.2) × 50W = 110W; The lifting component 5 operates at 110W power, corresponding to a lifting speed = base speed (1cm / s) + (110-100) × 0.02cm / (s・W) = 1.2cm / s; The processor controls the lifting component 5 to drive the soaking plate 2 to move back and forth between the lowest position (3cm below the liquid surface) and the middle position (1cm below the liquid surface) at a speed of 1.2cm / s. The lifting frequency is increased from 0.5 times / minute to 1 time / minute. By increasing the contact frequency between the soaking plate 2 and the soaking liquid, heat conduction is accelerated, and the temperature difference between the bottom (near the heating component) and the top of the soaking liquid is avoided to be too large. When the temperature of the soaking solution rises to 25℃, the temperature ratio = 28 / 25 = 1.12 < 1.2, and the lifting component 5 restores its basic power of 100W and speed of 1cm / s until the soaking solution reaches a constant temperature.

[0067] During the heating phase, the drive force adjustment, temperature monitoring, and heating power adjustment steps are carried out simultaneously. When the immersion liquid temperature reaches the preset immersion temperature value, the drive device switches to the immersion / soaking mode according to the core process requirements, and the power adjustment module automatically resets. If the temperature sensor detects an abnormal immersion liquid temperature (>32℃), the processor immediately cuts off the power supply to the heating component and reduces the drive power to the base value, triggering an audible and visual alarm to ensure processing safety.

[0068] Those skilled in the art can flexibly adjust the force ratio (1.1-1.3), drive power adjustment coefficient, and flow / speed correlation coefficient according to the volume of the soaking tank 1 (5-10L), the upper limit of the heating component power, and the rated parameters of the drive device. All such adjustments are within the protection scope of this application.

[0069] In this embodiment, the softening degree of individual materials within a single batch is controlled by using light transmittance detection to intuitively reflect the actual softening state of the material, enabling personalized foam replenishment and dynamic optimization of the second duration. Based on the core device and the aforementioned solution, a photoelectric detection module and a delay control module are added, as detailed below: Photoelectric detection module: It adopts a food-grade infrared photoelectric sensor with waterproof and dustproof characteristics (protection level IP67); the sensor is divided into a transmitter and a receiver, which are symmetrically installed on the brackets on both sides below the soaking plate 2. The transmitter emits infrared light vertically upward, and the receiver receives the light signal that penetrates the soaking material 4, ensuring that the detection path is unobstructed; the sensor is connected to the processor and converts the light signal into a transmittance value in real time, expressed as a percentage, ranging from 0-100%. The higher the transmittance value, the more fully the material is softened.

[0070] Delay control module: Integrated into the main control processor, it works in conjunction with the photoelectric detection module and the drive device. Its core functions are to receive the light transmittance judgment result, output the delay winding command, and control the drive device to maintain low flow immersion during the delay period.

[0071] The specific method is as follows: The first duration of 3 seconds and the second duration of 6 seconds, or the dynamic values ​​adjusted by the aforementioned scheme, are used in the previous embodiment. A new light transmittance-related parameter is added: the preset light transmittance reference value is 85%, which is determined based on the actual light transmittance of the Vietnamese spring roll skin after it has been fully softened, representing the appropriate softening standard for rolling; the light transmittance ratio adjustment coefficient is set to 2 seconds / unit ratio, that is, for every 0.1 increase in the light transmittance ratio, the second duration is extended by 2 seconds, and the maximum threshold for delayed rolling is 3 seconds to avoid excessive soaking.

[0072] Transmittance acquisition: When a batch of materials has completed the first soaking time (3 seconds) and the drive device has been reset, the photoelectric detection module is automatically started; infrared light penetrates each piece of Vietnamese spring roll skin laid flat on the soaking plate 2, the receiving end collects the light signal and converts it into a transmittance value, and the processor records the latest transmittance value of each piece of material. For example, the transmittance values ​​of 3 pieces of material in a certain batch are 88%, 79%, and 83%, respectively.

[0073] Softening status determination: The processor compares the light transmittance of each piece of material with the preset light transmittance reference value (85%): If the light transmittance is ≥85%, and 88% of 88% or 83% meets the standard, the material is deemed to have softened sufficiently and does not require a delay, and can enter the normal rolling queue. If the light transmittance is less than 85%, or if 79% fails to meet the standard, the material is deemed to be insufficiently softened, triggering a delayed winding command.

[0074] Delayed winding and second duration adjustment: For materials that do not meet the standards, the light transmittance ratio is calculated as follows: Light transmittance reference value / Light transmittance value that does not meet the standards = 85% / 79% ≈ 1.076; Based on the logic of adjusting the second duration according to the positive correlation of the transmittance ratio, the second duration of this batch is updated to the original 6 seconds + (1.076-1.0)×2.0 seconds≈7.152 seconds, rounded down to 7.2 seconds; The delay control module is activated, controlling the winding operation to be delayed by 1.2 seconds, consistent with the extension range of the second duration. At the same time, the drive device continuously sprays the soaking liquid onto the material surface at a low flow rate (3L / min) to ensure that the material does not lose water or harden during the soaking period. After the delay ends, the photoelectric detection module collects the light transmittance of the material again. If it is still <85%, the above steps are repeated until the standard is met or the longest delay threshold is reached.

[0075] Process integration: After all materials meet the standards, the processor issues a rolling start command, and the operator directly completes the rolling on the soaking plate 2; after the rolling of this batch is completed, the second duration is automatically updated to the adjusted 7.2 seconds and applied to the next batch of soaking, realizing the optimization and inheritance between batches.

[0076] If a material still has a light transmittance of less than 85% (e.g., 70%) after a maximum 3-second delay for re-soaking, it is determined that the material itself has abnormal characteristics (e.g., uneven thickness). The processor will trigger an audio-visual prompt to remind the operator to remove the material to avoid affecting the overall rolling efficiency and finished product quality.

[0077] To further optimize the adjustment of light transmittance, the dynamic trend of light transmittance values ​​across multiple batches is monitored. This proactively adapts to changes in softening characteristics caused by batch-to-batch material differences or fluctuations in processing environments, enabling precise predictive adjustment for the first time period. This avoids batch-specific over-softening or under-softening. Based on the existing photoelectric detection module, a data storage module and a trend analysis module have been added, as detailed below: Data storage module: It adopts an embedded storage chip with a capacity of ≥16GB to continuously store the average transmittance value of each batch within a set number of soaking cycles. The arithmetic mean of the transmittance values ​​of all materials is taken for each batch. The storage retention time is ≥30 days. It supports data traceability and batch export to ensure the sample integrity of trend analysis.

[0078] Trend Analysis Module: Integrated into the main control processor, its core functions are to read the stored transmittance values ​​of multiple batches, calculate the trend value of change according to the preset algorithm, and output the first duration adjustment command; it supports linear regression analysis algorithm, which can accurately capture the gradual change pattern of transmittance values.

[0079] The specific method is as follows: The initial value of the first duration (3 seconds), the light transmittance reference value (85%), and the photoelectric detection parameters of the aforementioned light transmittance detection scheme are retained from the previous embodiment. New trend analysis parameters are added: the number of immersions is set to 5 to balance trend accuracy and adjustment response speed, avoiding misjudgment due to insufficient sample size; the first duration adjustment coefficient is 0.5 seconds per unit trend value, meaning that for every 1 change in the trend value, the first duration is adjusted by 0.5 seconds; the first duration adjustment range is limited to 2-4 seconds to ensure that it is within the appropriate softening time range for the material, avoiding over-adjustment; the trend value calculation logic is clarified: a linear regression equation y=kx+b is used, where y is the light transmittance value, x is the immersion batch number, k is the slope (absolute value of the changing trend value), and b is the intercept. k is negative when the light transmittance gradually increases and positive when it gradually decreases.

[0080] Sample transmittance data collection and storage: After each batch of soaking is completed, the data storage module automatically records the average transmittance value of that batch. For example, the average transmittance values ​​of 5 consecutive batches (serial numbers 1-5) are 86%, 87%, 88%, 89%, and 90% (transmittance values ​​gradually increase), or 86%, 84%, 82%, 80%, and 78% (transmittance values ​​gradually decrease).

[0081] Trend value calculation: After completing the set 5 soaks, the trend analysis module initiates linear regression calculation: Example 1 (transmittance gradually increases): Substitute 5 sets of data (1,86), (2,87), (3,88), (4,89), (5,90) to calculate the linear regression equation y=1.0x+85, with a slope k=1.0; Since the trend value is negative when the transmittance gradually increases, the final trend value is -1.0; Example 2 (transmittance gradually decreases): Substitute the data (1,86), (2,84), (3,82), (4,80), (5,78), the linear regression equation is y=-2.0x+88, the slope is k=-2.0. Since the trend value of the transmittance decreasing is positive, the final trend value is 2.0.

[0082] First duration dynamic adjustment: Executed according to the logic of "adjusting the first duration based on the positive correlation of the changing trend value": Example 1 (Trend value = -1.0): Original first duration was 3 seconds, after adjustment the first duration = 3 seconds + (-1.0) × 5 seconds = 2.5 seconds; because the light transmittance gradually increases, the material softens faster, so shortening the first duration avoids excessive softening; Example 2 (Trend value = 2.0): After adjustment, the first duration = 3 seconds + 2.0 × 5 seconds = 4 seconds, reaching the adjustment limit and no longer increasing; because the light transmittance gradually decreases, the material softening speed slows down, so the first duration is extended to ensure sufficient softening.

[0083] Adjustment and Iterative Optimization: The adjusted first duration is immediately applied to the next batch of soaking, such as 2.5 seconds for the 6th batch in Example 1 and 4 seconds for the 6th batch in Example 2; for each new batch of soaking, the data storage module automatically removes the earliest batch of data to maintain dynamic updates of 5 consecutive samples. The trend analysis module repeats the above calculation and optimizes the first duration in real time, forming a closed-loop adjustment that is continuously iterated.

[0084] In addition, if the calculated first duration after adjustment exceeds the limit of 2-4 seconds, the boundary value is taken according to the principle of proximity. For example, if the trend value is 2.5, the adjusted duration is 3.0 + 2.5 × 0.5 = 4.125 seconds, and the actual duration is 4 seconds. At the same time, an audible and visual prompt is triggered to remind the operator to check whether there are any abnormalities in the batch characteristics of the material or the processing environment (such as water temperature and room temperature) to ensure that the adjustment is reasonable.

[0085] In other embodiments, the soaking effect is determined by image visual detection, and an image detection module and an image processing module are added, as detailed below: Image detection module: It adopts an industrial-grade high-definition color camera, equipped with a food-grade anti-fog and dustproof lens, with an IP65 protection rating, and is suitable for humid processing environments; the camera is installed on the side above the soaking tank 1 via an adjustable bracket, 250cm away from the soaking plate, with the shooting angle vertically aimed at the center area of ​​the soaking plate 2, ensuring complete coverage of all soaking materials 4 without any blind spots; the camera and processor are connected via a high-speed interface, with an image transmission delay of ≤100ms.

[0086] Image processing module: Integrated into the main control processor, it has a built-in deep learning image recognition algorithm based on the YOLOv5 lightweight model, with a recognition speed of ≥10 frames / second. Its core functions include: image preprocessing (denoising, enhancement, cropping), automatic extraction of 4 regions of soaked material (accurate segmentation of material and background with a segmentation accuracy of ≥99%), feature extraction (extraction of key features such as material edge morphology, texture uniformity, and color grayscale value), and difference value calculation (comparison with standard template image) to ensure accurate and reliable detection results.

[0087] The specific method is as follows: The first duration of 3 seconds, the second duration of 6 seconds, or the dynamic values ​​adjusted by the aforementioned scheme are retained from the previous embodiments; new image detection-related parameters are added: Template Images: Thirty pieces of Vietnamese spring roll wrappers were soaked in a standard solution (28℃, 6 seconds), and 30 sets of images were generated. A standard template image was generated by fusion of pixel mean values. The template image contains the standard shape of the material (no wrinkles, no damage), uniform texture (standard deviation of grayscale value ≤15), and complete edges with an edge integrity ≥98%. Preset gap reference value: Based on the features of the template image, the gap value threshold is set to 0.15. The difference value is calculated by weighting the structural similarity index SSIM and the mean absolute error MAE. The gap value ranges from 0 to 1. The closer it is to 0, the more consistent it is with the standard state. Adjustment coefficient: The positive correlation adjustment coefficient between the difference ratio and the second duration is 1 second / unit ratio. The maximum threshold for delayed rolling is 25 seconds to avoid excessive soaking that could cause material adhesion.

[0088] Immersion Image Acquisition: After the batch of materials has completed the first immersion time (3 seconds) and the drive device has been reset, the image detection module automatically starts and captures a clear image of all materials on the immersion plate 2 in 1 frame. After preprocessing, the image is transmitted to the image processing module.

[0089] Material region extraction and gap value calculation: The image processing module automatically segments the area of ​​each piece of soaking material 4, and removes interference factors such as the background of the soaking plate 2 and droplet reflection; Extract the edge shape, texture gray value, area ratio and other features of each material, compare them with the corresponding features of the preset template image, and calculate the difference value through a weighted algorithm: difference value = 0.6×(1-SSIM)+0.4×(MAE / 255), SSIM weight 0.6, MAE weight 0.4, normalized to the range of 0-1; Example: After soaking, a piece of material shows local wrinkles and uneven texture. The calculated SSIM=0.82, MAE=45, and the difference value is 0.6×(1-0.82)+0.4×(45 / 255)≈0.108+0.071≈0.179.

[0090] Assessment and dynamic adjustment of compliance: The processor compares the difference value (0.179) with the preset difference reference value (0.15). Since 0.179 > 0.15, it determines that the material does not meet the standard and triggers a delayed winding command. The calculated difference ratio is: Difference value / Difference reference value = 0.179 / 0.15 ≈ 1.193; Based on the logic of adjusting the second duration according to the positive correlation of the difference ratio, the second duration of this batch is updated to the original 6 seconds + (1.193 - 1.0) × 1.0 seconds ≈ 6.193 seconds, rounded to 6.2 seconds; The delay control module is activated, delaying the winding operation by 0.193 seconds. At the same time, the drive device maintains a low flow rate spray (2L / min) to avoid changes in material morphology or water loss during the replenishment of foam. After the delay ends, the image detection module takes another picture of the material and calculates the difference value. If the difference value is ≤0.15, it is determined to meet the standard. If it is still >0.15, the bubble replenishment adjustment is repeated until the standard is met or the longest delay threshold is reached.

[0091] Multi-material simultaneous processing: If multiple materials in the same batch fail to meet the standard, the adjustment range corresponding to the largest difference ratio is used to update the second time period, ensuring that all non-compliant materials can receive sufficient foam replenishment, while compliant materials wait until the end of the second time period for unified rolling.

[0092] In addition, if the difference value of a certain material is still >0.15 (e.g., 0.22) after a maximum delay of 2.5 seconds for re-soaking, it is determined that the material has an abnormal shape (e.g., initial wrinkles, severe uneven thickness) or abnormal soaking solution circulation. The processor will trigger an audible and visual alarm and display the location of the abnormal material on the control panel to remind the operator to handle it accordingly, remove it or rearrange it to avoid affecting the processing efficiency of the entire batch.

[0093] To further optimize the image vision inspection solution, a dynamic negative feedback adjustment mechanism driven by image recognition is constructed by continuously tracking the changing trends of the difference values ​​of multiple batches of materials. This mechanism proactively adapts to fluctuations in material batch characteristics or subtle changes in the processing environment, enabling predictive optimization in the first time period. A data storage module and a trend calculation module have been added, as detailed below: Data storage module: Adopts industrial-grade embedded storage chip with a capacity of ≥32GB, supports continuous storage of average difference values ​​of ≥1000 batches (arithmetic mean of the difference values ​​of all materials in each batch) and corresponding processing environment parameters (room temperature, initial temperature of soaking solution), storage latency ≤1ms, ensuring real-time data writing without loss, and supports historical data traceability and batch analysis.

[0094] Trend calculation module: Integrated into the main control processor, it has built-in linear regression and moving average algorithms. Its core functions are to read the continuous difference value within a set number of soaking times, fit the change curve, calculate the difference trend value, and output the first duration adjustment command. It can accurately capture the gradual change pattern and sudden fluctuation of the difference value.

[0095] The specific method is as follows: The initial value of the first duration (3 seconds), the reference value of the difference (0.15), and the template image and difference value calculation logic of the image detection scheme are retained from the previous embodiment. New trend analysis parameters are added: the number of immersions is set to 5 to balance sample representativeness and adjust response speed, avoiding trend misjudgment due to insufficient sample size; the first duration adjustment coefficient is 0.5 seconds per unit trend value, meaning that for every 1 change in the difference trend value, the first duration is adjusted by 0.5 seconds; the adjustment range of the first duration is limited to 2.0-4.0 seconds to ensure that the material is within the appropriate softening time range, avoiding over-adjustment leading to over-softening or under-softening; the trend value calculation rules are clarified: a linear regression equation y=kx+b is used, where y is the difference value, x is the immersion batch number, and k is the slope. Following the logic that a gradually increasing difference value leads to a positive difference trend value, and a gradually decreasing difference value leads to a negative difference trend value, the slope k is directly used as the difference trend value, and the slope sign naturally matches the trend definition.

[0096] Sample difference value collection and storage: After each batch of materials completes soaking and image detection, the data storage module automatically records the average difference value of that batch and removes outliers. The outlier judgment standard is: exceeding the average difference value of the previous 3 batches by ±30%. For example, the average difference values ​​of 5 consecutive batches (serial numbers 1-5) are 0.13, 0.14, 0.16, 0.17, and 0.18, with the difference value gradually increasing, or 0.16, 0.15, 0.14, 0.13, and 0.12, with the difference value gradually decreasing.

[0097] Difference trend value calculation: After completing the set 5 soaks, the trend calculation module starts linear regression analysis: Example 1 (The difference gradually increases): Substitute 5 sets of data (1, 0.13), (2, 0.14), (3, 0.16), (4, 0.17), (5, 0.18), fit the linear regression equation y = 0.012x + 0.118, the slope k = 0.012, that is, the difference trend value = 0.012, which is a positive value, representing that the soaking effect gradually deteriorates; Example 2 (difference gradually decreases): Substitute the data (1,0.16), (2,0.15), (3,0.14), (4,0.13), (5,0.12) and fit the linear regression equation y=-0.01x+0.17 with a slope k=-0.01. That is, the trend value of the difference is -0.01, which is negative, indicating that the soaking effect is gradually improving.

[0098] First-duration predictive adjustment: The logic of adjusting the first-duration interval is executed based on the positive correlation of the difference trend value. Example 1 (Trend value = 0.012): Original first duration 3 seconds, adjusted first duration = 3 seconds + 0.012 × (1 / 0.01) × 0.5 seconds = 3 seconds + 0.6 seconds = 3.6 seconds. Note: Because the absolute value of the trend value is small, a unit trend value conversion factor of 1 / 0.01 is introduced, that is, every 0.01 unit trend value corresponds to 1 times the adjustment factor, to ensure that the adjustment range is adapted to the actual trend; because the difference value continues to increase, the soaking effect deteriorates, so the first duration is extended to enhance the soaking effect and compensate for batch characteristic fluctuations, such as the material's water absorption capacity being enhanced. Example 2 (trend value = -0.01): Adjusted first duration = 3 seconds + (-0.01) × (1 / 0.01) × 0.5 seconds = 2.5 seconds; As the difference value continues to decrease, the soaking effect improves. Shortening the first duration avoids over-soaking and adapts to the optimized processing environment, such as increased room temperature.

[0099] Iterative optimization and trend update: The adjusted first duration is immediately applied to the next batch. For example, the 6th batch in Example 1 uses 3.6 seconds, and the 6th batch in Example 2 uses 2.5 seconds. For each new batch of soaking, the data storage module automatically performs a first-in-first-out update, retaining the difference value of the latest 5 consecutive batches. The trend calculation module repeats the above process to optimize the first duration in real time, forming a continuous iterative closed-loop adjustment mechanism.

[0100] In addition, if the first duration after adjustment exceeds the 20-40 second limit, the boundary value is taken according to the nearest principle. For example, if the trend value is 0.025, the adjusted duration is 3.0 + 0.025 × 100 × 0.5 = 4.25 seconds, and the actual duration is 4 seconds. At the same time, an audible and visual prompt is triggered to remind the operator to check the material batch (such as whether the supplier has been changed), the purity of the soaking solution, or the calibration status of the image detection module to ensure the rationality of the adjustment logic and the safety of the process.

[0101] This application also discloses a constant temperature soaking control device for rolled food materials, including a processor, wherein the processor executes the steps of the constant temperature soaking control method for rolled food materials as described in any of the above embodiments.

[0102] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A constant temperature infusion control method for a rolled food material, characterized by, The method comprises the following steps: Based on the soaking plate (2) for placing the soaking material (4), the soaking plate (2) is located above the liquid level of the soaking liquid in the soaking pool (1), and the soaking pool (1) is provided with a driving device for enabling the soaking plate (2) to be covered with the soaking liquid; Based on a first temperature sensor arranged in the soaking pool (1), a liquid temperature value of the soaking liquid is obtained, and if the liquid temperature value is less than a preset soaking temperature value, the soaking liquid is heated, a difference value between the liquid temperature value and the soaking temperature value is calculated as a temperature difference value, a temperature difference ratio value is calculated according to the temperature difference value and a preset reference difference value, and the heating power is controlled according to the temperature difference ratio value in a positive correlation; otherwise, the heating power is set to zero; Based on a preset starting instruction, the driving device is started to work to soak the soaking plate (2), the driving device is stopped and reset, the soaking material (4) is moved to the soaking plate (2), and after the heating power is set to zero, the driving device is started to enable the soaking liquid to soak the surface of the soaking material (4); after the soaking lasts for a preset first duration, the driving device is stopped and reset to enable the soaking material (4) to be soaked for a duration of at least a preset second duration, wherein the first duration is contained in the second duration; The rolling operation of the soaking material (4) is completed on the soaking plate (2).

2. The constant temperature infusion control method of a rolled food material according to claim 1, characterized by, The method further comprises the following steps: Timing is started after the soaking is completed, and the timing is completed when the rolling operation is started to obtain a waiting duration; If the waiting duration is greater than a preset warning duration, a soaking abnormality prompt is given; An average value of a plurality of waiting durations is calculated, a warning ratio value is calculated according to the average value and the warning duration, and the second duration is adjusted according to the warning ratio value in a negative correlation.

3. The constant temperature infusion control method of a rolled food material according to claim 1, characterized by, The method further comprises the following steps: A second temperature sensor is arranged on the soaking plate (2), the second temperature sensor is controlled to collect a temperature on the soaking plate (2) to generate a plate body temperature value in response to a starting instruction, the driving device is controlled to be started to work to enable the soaking liquid to soak the soaking plate (2) if the plate body temperature value is less than the soaking temperature value; A difference value between the soaking temperature value and the plate body temperature is calculated as a plate body temperature difference, a plate temperature ratio value is calculated according to the plate body temperature difference and a preset set difference value, and the soaking duration in the soaking step is adjusted according to the plate temperature ratio value in a positive correlation, or the control coefficient of the heating power controlled according to the temperature difference ratio value is adjusted according to the plate temperature ratio value in a positive correlation.

4. The constant temperature infusion control method of a rolled food material according to claim 1, characterized by, The soaking plate (2) is fixed in the soaking pool (1), the driving device comprises a pumping assembly (3), the bottom of the soaking pool (1) is provided with a water suction port, the sidewall of the soaking pool (1) is provided with a water outlet port aligned with the soaking plate (2), the pumping assembly (3) extracts the soaking liquid at the water suction port and sprays the soaking liquid to the soaking plate (2) at the water outlet port, the driving device further comprises a spraying assembly (6) arranged above the soaking pool (1) and aligned with the soaking plate (2), the water inlet port of the spraying assembly (6) is connected with the water outlet port of the pumping assembly (3), and the spraying pressure or the spraying caliber of the spraying assembly (6) is adjusted according to the plate temperature ratio value in a negative correlation. Alternatively, the soaking plate (2) is lifted and moved in the soaking pool (1), the driving device comprises a lifting assembly (5) connected between the soaking pool (1) and the soaking plate (2), when the lifting assembly (5) drives the soaking plate (2) to be in the lowest position in the soaking pool (1), the soaking plate (2) is below the soaking liquid level, when the lifting assembly (5) drives the soaking plate (2) to be in the highest position in the soaking pool (1), the soaking plate (2) is above the soaking liquid level; the lowest position of the soaking plate (2) in the soaking pool (1) is adjusted according to the positive correlation of the second time length, or the action speed of the lifting assembly (5) is adjusted according to the negative correlation of the second time length.

5. The constant temperature infusion control method of a rolled food material according to claim 4, characterized by, The step of heating the soaking liquid further comprises the following sub-steps: The ratio of the soaking temperature value and the liquid temperature value is calculated as a temperature ratio, if the temperature ratio is greater than a preset force ratio, the driving device is started, and the driving power of the driving device is adjusted according to the positive correlation of the temperature ratio; If the driving device comprises a pumping assembly (3), the pumping flow is positively correlated with the driving power; if the driving device comprises a lifting assembly (5), the lifting frequency is positively correlated with the driving power or the lifting speed is positively correlated with the driving power.

6. The constant temperature infusion control method of a rolled food material according to claim 1, characterized by, The method further comprises the following steps: An optoelectronic detection module is arranged on the soaking plate (2), and the optoelectronic detection module is used to collect the light transmittance of the soaking material (4) to generate a light transmittance value; After the soaking material (4) is soaked and before it is rolled, the latest light transmittance value is obtained, if the light transmittance value is less than a preset light transmittance reference value, the rolling is delayed, and the ratio of the light transmittance reference value and the light transmittance value is calculated as a light transmittance ratio, and the second time length is adjusted according to the positive correlation of the light transmittance ratio.

7. The constant temperature infusion control method of a rolled food material according to claim 6, characterized by, The method further comprises the following steps: At a set number of times of soaking, the change trend value of the corresponding plurality of light transmittance values is calculated, and the first time length is adjusted according to the positive correlation of the change trend value; wherein, if the light transmittance value gradually increases, the change trend value is a negative value, and if the light transmittance value gradually decreases, the change trend value is a positive value.

8. The constant temperature infusion control method of a rolled food material according to claim 1, characterized by, An image detection module is arranged beside the soaking pool (1) and is aligned with the soaking plate (2), and the image detection module is used to capture an image on the soaking plate (2) and extract the soaking material (4) to generate a soaking image; After the soaking material (4) is soaked and before it is rolled, the latest soaking image is obtained, and the difference value between the soaking image and a preset template image is calculated; wherein, the template image is a standard image of the soaking material (4) after soaking; If the difference value is greater than a preset difference reference value, the rolling is delayed, and the ratio of the difference value and the difference reference value is calculated as a difference ratio, and the second time length is adjusted according to the positive correlation of the difference ratio.

9. The constant temperature infusion control method of a rolled food material according to claim 8, characterized by, The method further comprises the following steps: At a set number of times of soaking, the difference trend value of the corresponding plurality of difference values is calculated, and the first time length is adjusted according to the positive correlation of the difference trend value; wherein, if the difference value gradually increases, the difference trend value is a positive value, and if the difference value gradually decreases, the difference trend value is a negative value.

10. A constant temperature infusion control device for a rolled food material, characterized by, The processor executes the steps of the constant-temperature soaking control method of the rolled food material according to any one of claims 1-9.

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