Easily-occurring sea cucumber processing control method and system based on cooperation of oxygen injection and hydrotherapy

Abstract

The invention discloses an easily-occurring sea cucumber processing control method and system based on oxygen injection synergistic hydrotherapy, relates to the technical field of food processing control, and realizes self-adaption and precise control of a sea cucumber processing process through multi-sensor feedback. The method comprises the following steps: firstly, calling a processing technology parameter vector X of a sea cucumber variety to carry out standardization setting, and calculating the maximum oxygen introduction amount OMAX to carry out pretreatment so as to mildly wake up tissues; and then the real-time water turbidity Trt is monitored until the cleaning threshold TMIN is reached, so that deep cleaning is completed. In the secondary hydrotherapy, the real-time oxygen introduction amount Ort is dynamically adjusted to maintain the target dissolved oxygen concentration DO2 of the secondary hydrotherapy, and the processing environment is stabilized. And monitoring the real-time conductivity Crt of the secondary hydrotherapy solution, and ending the conditioning when the change value C of the real-time conductivity of the secondary hydrotherapy solution meets the requirement, thereby realizing the intelligent judgment of the absorption process. And finally, processing is completed after preset standing time tP, and uniform quality is ensured.

Description

Technical Field

[0001] This invention relates to the field of food processing control technology, specifically to a method and system for controlling the processing of easily flammable sea cucumber based on oxygen injection and hydrotherapy. Background Technology

[0002] This invention relates to the field of food processing technology, specifically to a process control technology for the deep processing of aquatic products. In aquatic product processing, the treatment of echinoderms is of particular interest due to their unique tissue structure. Sea cucumber, as a high-value seafood delicacy, directly determines the commercial value of the final product and the consumer experience through the quality of its processing. One of the core steps in sea cucumber processing is water treatment, which alters its physical and biochemical properties through full interaction with aqueous solutions to achieve specific quality requirements. For example, in large-scale food processing centers, freshly caught sea cucumbers undergo standardized pretreatment to prepare high-quality ready-to-eat, frozen, or dried products; or in the large-scale production of dried sea cucumbers, specific treatments facilitate the subsequent rehydration process, achieving easy rehydration. All these processes rely on a set of efficient and controllable hydrotherapy technology, based on which environmental parameters are precisely controlled during the hydrotherapy process.

[0003] In existing technologies, the hydration and cleaning of sea cucumbers mostly employ traditional methods such as prolonged soaking and mechanical vibration. The primary drawback of these methods is the imprecise nature of process control. The processing effect is highly dependent on the operator's personal experience, leading to significant differences in rehydration levels, texture, and other taste indicators between different batches, and even within the same batch, resulting in poor product quality uniformity. Secondly, prolonged static or semi-static soaking, especially at room temperature, provides a breeding ground for microbial growth and reproduction. Dissolved oxygen in the processing water is rapidly depleted by microbial activity, creating an anaerobic environment that easily leads to the proliferation of anaerobic putrefactive bacteria. This not only shortens the product's shelf life but may also produce off-flavor substances such as hydrogen sulfide. Furthermore, simple soaking is inefficient at removing residual visceral fragments or mucus from the sea cucumber's body cavity, affecting the cleanliness and flavor of the final product.

[0004] The root cause of these problems lies in the fact that traditional processing methods are mostly open-loop and rely on manual experience for control. For example, during prolonged static or semi-static soaking, the low dissolved oxygen content in the water provides a breeding ground for anaerobic bacteria and other putrefactive bacteria. This can not only lead to product spoilage but also produce off-flavor substances such as hydrogen sulfide due to the oxygen-deficient environment. Simultaneously, after slaughter, sea cucumbers experience stress, causing their muscle tissue to contract and stiffen. Without effective physical intervention, simple soaking alone is insufficient to allow them to absorb water evenly and quickly, resulting in localized hardening or over-expansion in the finished product. Furthermore, the lack of active, controlled water flow makes it difficult to effectively remove residual visceral mucus and other impurities from the sea cucumber's body cavity, contributing to a fishy smell and lowering hygiene standards. This combination of uncontrolled factors ultimately results in the finished product failing to meet ideal industrial standards in terms of taste, color, safety, and processing efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a method and system for controlling the processing of sea cucumber prone to infection based on oxygen injection and synergistic hydrotherapy, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a method for controlling the processing of sea cucumber prone to infection based on oxygen injection combined with hydrotherapy, comprising the following steps:

[0007] S1. The staff inputs the type and quality of the sea cucumber to be processed into the control panel. S The console accesses and retrieves the corresponding processing parameter vector X from the preset rule base, and deploys multiple sensors in the spa pool;

[0008] S2, based on sea cucumber quality W S Prepare the initial hydrotherapy solution based on the process parameter vector X, and calculate the maximum oxygen flux O based on the maximum dissolved oxygen concentration DO1 in the initial hydrotherapy of the process parameter vector X. MAX The sea cucumbers underwent their first hydrotherapy pretreatment.

[0009] S3. After completing the initial hydrotherapy pretreatment, the sea cucumbers are transferred to the second hydrotherapy pool for deep cleaning, with the real-time water turbidity T monitored by a turbidity sensor at the drain outlet. rt Reaching the preset cleaning threshold T MIN When required, the deep cleaning work is deemed complete;

[0010] S4, based on sea cucumber quality W S The secondary hydrotherapy solution was prepared based on the processing parameter vector X, and the real-time oxygen flux (O2) was calculated based on the target dissolved oxygen concentration (DO2) in the secondary hydrotherapy solution from the processing parameter vector X. rt Dynamically adjust the real-time oxygen flow rate (O2). rt ;

[0011] S5. Monitor the real-time conductivity C of the secondary hydrotherapy solution using a deployed conductivity meter. rt When the real-time conductivity change value ΔC of the secondary hydrotherapy solution reaches the preset equilibrium range C th Upon request, the second hydrotherapy session is deemed complete;

[0012] S6. After the second hydrotherapy is completed, stop oxygenation and let the sea cucumbers remain in the second hydrotherapy solution for the preset set time t. P The secondary hydrotherapy solution is then drained to complete the sea cucumber hydrotherapy processing.

[0013] Preferably, S1 includes S11;

[0014] S11. The staff inputs the type and quality of the sea cucumber to be processed into the control panel. S The console accesses and retrieves the corresponding processing technology parameter vector X from the preset rule base;

[0015] The processing parameter vector X in the rule base is set by relevant professionals, including the target processing temperature θ, the target dissolution concentration DO1 for the first hydrotherapy, the target dissolution concentration DO2 for the second hydrotherapy, the target salinity C1 for the first hydrotherapy, the set of target molecular concentrations for the second hydrotherapy C2, the mass ratio of sea cucumber to liquid solution M, and the molecules for the second hydrotherapy including salt, trehalose, glycine and proline.

[0016] Online dissolved oxygen sensors were deployed in the first and second spa pools to obtain the oxygen concentration in the pools. Ultrasonic level sensors were deployed above the first and second spa pools to obtain the water level L of the spa solution. A turbidity sensor was deployed at the drain outlet of the second spa pool to obtain the real-time turbidity T of the water. rt Conductivity meters were deployed in the secondary hydrotherapy pool to obtain the real-time conductivity C of the secondary hydrotherapy solution. rt .

[0017] Preferably, S2 includes S21;

[0018] S21, Based on the sea cucumber quality W S The processing parameters include the initial hydrotherapy target salinity C1 and the sea cucumber-to-liquid solution mass ratio M in the vector X. The initial hydrotherapy solution is prepared and its temperature is stably controlled at the target processing temperature θ. The sea cucumbers to be processed are then placed in the first hydrotherapy tank for initial hydrotherapy pretreatment. The first stage of the initial hydrotherapy pretreatment is as follows:

[0019] The first pool of the initial hydrotherapy session was oxygenated using an oxygenation device, allowing the oxygen flow rate (O2) to smoothly increase linearly from 100 L / min to the maximum oxygen flow rate (O2) over 15 minutes. MAX Among them, the maximum oxygenation rate O MAXThe concentration of dissolved oxygen (DO1) for the first hydrotherapy session is calculated based on the processing parameter vector X, and must not exceed 300 L / min. If the calculated result exceeds 300 L / min, then 300 L / min is used. The calculation is performed at a specified time t. R Within, a specified volume V of spa solution is drawn from the initial dissolved oxygen concentration (DO) of the first spa treatment. S1 The total oxygen mass is increased to the maximum dissolved oxygen concentration (DO1) of the initial hydrotherapy session. Combined with the oxygen conversion rate (DOT) of the oxygen injection equipment, the maximum oxygen flow rate (O) is calculated in reverse. MAX ;

[0020] Among them, the maximum oxygenation rate O MAX The calculation expression is as follows:

[0021] ;

[0022] In the formula, t R1 This indicates the designated time for the first stage of the initial spa treatment, which is 15 minutes during the initial spa pretreatment phase. DO S1 The initial dissolved oxygen concentration for the first hydrotherapy session is obtained by an online dissolved oxygen sensor deployed in the first pool of the first hydrotherapy session before the oxygen injection equipment operates. V represents the volume of the prepared first hydrotherapy solution, obtained by multiplying the hydrotherapy solution level L obtained by an ultrasonic level sensor deployed in the first pool of the first hydrotherapy session by the preset bottom area S of the pool. DOT represents the oxygen conversion rate of the oxygen injection equipment, obtained by measuring the change in oxygen concentration in the liquid at a fixed oxygen flow rate over a fixed time period in conjunction with an online dissolved oxygen sensor, and is expressed in milligrams per liter.

[0023] Preferably, S2 includes S22;

[0024] S22, The second stage of the initial hydrotherapy pretreatment is as follows:

[0025] The oxygen supply capacity of the oxygen injection equipment reached its maximum. MAX At that time, the continuous oxygen injection was switched to rhythmic pulse oxygen injection, with the maximum oxygen flow rate O2. MAX Perform the following routine: infuse oxygen for 10 seconds, then completely stop the oxygen infusion and let it rest for 20 seconds. Repeat this oxygen infusion-rest cycle for 15 minutes to complete the first hydrotherapy pretreatment.

[0026] Preferably, S3 includes S31;

[0027] S31. After completing the initial hydrotherapy pretreatment, the sea cucumbers are transferred to the second pool of the initial hydrotherapy for deep cleaning. The deep cleaning process is as follows:

[0028] The second water tank of the first hydrotherapy was subjected to a rhythmic pulse oxygenation method, similar to the second stage of the first hydrotherapy pretreatment. A circulating filtration tank was connected to the drain outlet, and the filtered first hydrotherapy solution was returned to the second water tank. Simultaneously, a turbidity sensor deployed at the drain outlet monitored the real-time water turbidity T. rt The monitoring frequency is once per minute. When the real-time water turbidity T is detected... rt Three consecutive cleaning thresholds T < preset cleaning threshold MIN When the cleaning work is completed, it is considered finished.

[0029] Preferably, S4 includes S41;

[0030] S41. After the sea cucumber cleaning is completed, according to the sea cucumber quality W S The secondary hydrotherapy solution is prepared using the target concentration ratio C2 of the secondary hydrotherapy molecules and the mass ratio M of sea cucumber and liquid solution in the processing parameter vector X. The volume of the secondary hydrotherapy solution is the same as the volume V of the primary hydrotherapy solution, and the solution temperature is stably controlled at the target processing temperature θ. The real-time dissolved oxygen concentration (DO) of the secondary hydrotherapy solution is obtained using an online dissolved oxygen sensor deployed in the secondary hydrotherapy tank. rt The monitoring frequency is once per minute. Based on the target dissolved oxygen concentration (DO2) of the secondary hydrotherapy in the processing parameter vector X, combined with the maximum oxygen flow rate (O2), the monitoring frequency is determined. MAX Calculation formula for calculating real-time oxygen flux O rt Dynamically adjust the real-time oxygen flow rate (O2). rt ;

[0031] Among them, if the current monitoring result is the real-time dissolved oxygen concentration (DO) of the secondary hydrotherapy solution... rt If the target dissolved oxygen concentration (DO2) for the secondary hydrotherapy is reached, a stop command is sent to the oxygen injection equipment.

[0032] If the current monitoring result is the real-time dissolved oxygen concentration (DO) of the secondary hydrotherapy solution... rt If the target dissolved oxygen concentration (DO2) for secondary hydrotherapy is ≤, then calculate the real-time oxygen flux (O2). rt And based on the calculation results, a dynamic adjustment command is sent to adjust the real-time oxygen supply (O2). rt The calculation expression is as follows:

[0033] ;

[0034] In the formula, t R2 This indicates the monitoring interval for the online dissolved oxygen sensor, specifically 1 minute.

[0035] Preferably, S5 includes S51;

[0036] S51. Monitor the real-time conductivity C of the secondary hydrotherapy solution using a deployed conductivity meter. rtThe monitoring frequency is once per minute, and the real-time conductivity C of the secondary hydrotherapy solution is calculated immediately after each monitoring. rt The conductivity C of the secondary hydrotherapy solution at the previous moment rt-1 The difference was used to obtain the real-time conductivity change value ΔC of the secondary hydrotherapy solution.

[0037] Preferably, S5 includes S52;

[0038] S52. The real-time conductivity change value ΔC of the secondary hydrotherapy solution is compared with the preset equilibrium range C. th A comparison was made, in which the preset equilibrium interval C th This includes the left value C1 of the equilibrium interval and the right value C2 of the equilibrium interval;

[0039] If the real-time conductivity change value ΔC of the secondary hydrotherapy solution does not reach ≥ the left value C1 of the equilibrium interval and ≤ the right value C2 of the equilibrium interval for three consecutive times, it is determined that the sea cucumber has not absorbed the hydrotherapy solution sufficiently, the secondary hydrotherapy is not completed, and the secondary hydrotherapy work should continue.

[0040] If the real-time conductivity change value ΔC of the secondary hydrotherapy solution reaches ≥ the left value C1 of the equilibrium interval and ≤ the right value C2 of the equilibrium interval for three consecutive times, it is determined that the sea cucumber has fully absorbed the hydrotherapy solution and the secondary hydrotherapy has been completed. A stop oxygenation command is then sent to the oxygenation equipment.

[0041] Preferably, S6 includes S61;

[0042] S61. After the secondary hydrotherapy is completed, a stop oxygenation command is sent to the oxygenation equipment, allowing the sea cucumbers to remain still in the secondary hydrotherapy solution until the preset set settling time t is reached. P The secondary hydrotherapy solution is then drained to complete the sea cucumber hydrotherapy processing.

[0043] An oxygen-injection synergistic hydrotherapy-based sea cucumber processing control system includes a process parameter acquisition module, a cleaning pretreatment module, a deep cleaning module, a constant dissolved oxygen control module, a duration dynamic decision-making module, and a state stabilization module.

[0044] The process parameter acquisition module allows staff to input the type and quality (W) of the sea cucumber to be processed into the console. S The console accesses and retrieves the corresponding processing parameter vector X from the preset rule base, and deploys multiple sensors in the spa pool;

[0045] The cleaning pretreatment module adjusts the cleaning process according to the sea cucumber quality W. S Prepare the initial hydrotherapy solution based on the process parameter vector X, and calculate the maximum oxygen flux O based on the maximum dissolved oxygen concentration DO1 in the initial hydrotherapy of the process parameter vector X. MAX The sea cucumbers underwent their first hydrotherapy pretreatment.

[0046] After undergoing initial pre-treatment with sea cucumbers, the deep cleaning module transfers them to the second pool of the initial spa for deep cleaning. The real-time turbidity (T) of the water is monitored by a turbidity sensor at the drain outlet. rt Reaching the preset cleaning threshold T MIN When required, the deep cleaning work is deemed complete;

[0047] The constant dissolved oxygen control module controls the dissolved oxygen based on the sea cucumber mass W. S The secondary hydrotherapy solution was prepared based on the processing parameter vector X, and the real-time oxygen flux (O2) was calculated based on the target dissolved oxygen concentration (DO2) in the secondary hydrotherapy solution from the processing parameter vector X. rt Dynamically adjust the real-time oxygen flow rate (O2). rt ;

[0048] The duration dynamic decision module monitors the real-time conductivity C of the secondary hydrotherapy solution using a deployed conductivity meter. rt When the real-time conductivity change value ΔC of the secondary hydrotherapy solution reaches the preset equilibrium range C th Upon request, the second hydrotherapy session is deemed complete;

[0049] After the stabilization module completes the secondary hydrotherapy, oxygenation is stopped, and the sea cucumbers are left to stand in the secondary hydrotherapy solution for the preset set time t. P The secondary hydrotherapy solution is drained to complete the sea cucumber hydrotherapy processing;

[0050] The system includes an input terminal and an output terminal connected by electrical signals;

[0051] The input terminals include the following:

[0052] The human-machine interface allows staff to input initial commands such as the type and quality (WS) of the sea cucumbers to be processed, corresponding to some functions of the process parameter acquisition module. Online dissolved oxygen sensors are deployed in the first and second water tanks of the initial hydrotherapy session to provide real-time dissolved oxygen concentration signals to the PLC. Ultrasonic level sensors are deployed above all tanks to provide the PLC with the hydrotherapy solution level (L) signal. A turbidity sensor is deployed at the drain outlet of the second water tank of the initial hydrotherapy session to provide the PLC with real-time water turbidity (T). rt The conductivity meter is deployed in the secondary hydrotherapy pool to provide the PLC with the real-time conductivity C of the secondary hydrotherapy solution. rt Signal;

[0053] The output terminals include the following:

[0054] The solenoid valves and flow regulators of the oxygen injection equipment are used to precisely control the start, stop, and amount of oxygen flow according to the instructions of the PLC. The water pump is used for solution preparation, circulation, and discharge. The temperature control unit is used to stabilize the solution temperature at the target processing temperature θ.

[0055] This invention provides a method and system for controlling the processing of sea cucumber prone to infection based on oxygen injection combined with hydrotherapy, which has the following beneficial effects:

[0056] (1) By constructing an adaptive control process integrating parameterized preset and multi-sensor closed-loop feedback, the core technical problems of traditional sea cucumber processing, such as reliance on manual experience, extensive process control, inconsistent product quality, and low processing efficiency, are solved. This solution no longer executes a fixed "time-temperature" process, but instead sets scientific initial parameters for the processing process by accessing a preset rule library for different sea cucumber species. More importantly, it introduces real-time feedback control in key process stages, using turbidity sensors to accurately determine the degree of cleanliness, and innovatively using dynamic changes in solution conductivity to intelligently determine the endpoint of nutrient absorption. This adaptive control strategy, which responds to the real-time state of the material, significantly improves the standardization and automation of the processing process, thereby achieving breakthrough results in improving the uniformity of sea cucumber product quality, processing efficiency, and final flammability.

[0057] (2) By retrieving the preset processing parameter vector X based on the sea cucumber species at the initial stage, it was ensured that all subsequent operations were carried out based on the most suitable material characteristics, thus achieving refined processing tailored to the specific needs of the material. Based on this, the initial hydrotherapy pretreatment employed a combination of gentle linear oxygenation and rhythmic pulses, which scientifically calculated and controlled the maximum oxygenation rate O0. MAX This effectively avoids initial stress damage to sea cucumber tissues, achieving full tissue awakening and efficient loosening of surface impurities. Following this, the deep cleaning stage abandons the traditional timed mode and innovatively introduces a turbidity feedback mechanism. The system monitors the cleanliness of the circulating water in real time, up to the real-time turbidity T... rt The temperature was lower than the preset cleaning threshold T for several consecutive times. MIN Only then is purification deemed complete. This results-oriented intelligent control ensures that each batch of product meets extremely high cleanliness standards, solving problems such as poor taste and unpleasant flavor caused by residual impurities, and maximizing processing efficiency.

[0058] (3) After achieving thorough purification, the product quality is further guaranteed and improved through precise control of the secondary hydrotherapy environment. The system adopts a closed-loop feedback method to dynamically adjust the real-time oxygen injection volume. rt Maintaining a constant target dissolved oxygen (DO2) concentration in the secondary hydrotherapy solution creates an optimal biochemical environment for nutrient absorption and quality stability in sea cucumbers, effectively inhibiting microbial growth and oxidative deterioration. Crucially, the endpoint of the conditioning process is intelligently determined by monitoring the real-time conductivity change (ΔC) of the secondary hydrotherapy solution. When the absorption rate of amino acids and other ions by sea cucumbers significantly decreases, causing the real-time conductivity change (ΔC) of the secondary hydrotherapy solution to continuously stabilize within a preset equilibrium range (C...).th Only when the absorption reaches saturation is the process considered complete. This innovative method ensures that the processing time is entirely determined by the sea cucumber's own absorption state, guaranteeing that nutrients are fully and appropriately absorbed for optimal taste and flavor. Finally, a settling process allows the absorbed substances to distribute evenly within the tissues, and oxygenation promotes water penetration through water flow massage. After this process, the dried sea cucumber develops internal channels and a water-locking structure that facilitates rapid water passage. When consumers re-soak it, water penetrates more quickly and evenly, shortening the soaking time and resulting in more uniform expansion. This leads to a stable product with highly consistent internal and external quality, providing the market with high-quality, easily rehydrated sea cucumber products. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of the steps of a method for controlling the processing of sea cucumber prone to infection based on oxygen injection and hydrotherapy according to the present invention;

[0060] Figure 2 This is a schematic diagram of a control system for easily flammable sea cucumber processing based on oxygen injection and hydrotherapy according to the present invention.

[0061] Figure 3 A distribution map of conductivity data during the determination of the endpoint of secondary hydrotherapy. Detailed Implementation

[0062] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0063] Example 1

[0064] This invention provides a method for controlling flammable sea cucumber processing based on oxygen injection combined with hydrotherapy. Please refer to [link / reference]. Figure 1 This includes the following steps:

[0065] S1. The staff inputs the type and quality of the sea cucumber to be processed into the control panel. S The console accesses and retrieves the corresponding processing parameter vector X from the preset rule base, and deploys multiple sensors in the spa pool;

[0066] S2, based on sea cucumber quality W S Prepare the initial hydrotherapy solution based on the process parameter vector X, and calculate the maximum oxygen flux O based on the maximum dissolved oxygen concentration DO1 in the initial hydrotherapy of the process parameter vector X. MAX The sea cucumbers underwent their first hydrotherapy pretreatment.

[0067] S3. After completing the initial hydrotherapy pretreatment, the sea cucumbers are transferred to the second hydrotherapy pool for deep cleaning, with the real-time water turbidity T monitored by a turbidity sensor at the drain outlet. rt Reaching the preset cleaning threshold T MIN When required, the deep cleaning work is deemed complete;

[0068] S4, based on sea cucumber quality W S The secondary hydrotherapy solution was prepared based on the processing parameter vector X, and the real-time oxygen flux (O2) was calculated based on the target dissolved oxygen concentration (DO2) in the secondary hydrotherapy solution from the processing parameter vector X. rt Dynamically adjust the real-time oxygen flow rate (O2). rt ;

[0069] S5. Monitor the real-time conductivity C of the secondary hydrotherapy solution using a deployed conductivity meter. rt When the real-time conductivity change value ΔC of the secondary hydrotherapy solution reaches the preset equilibrium range C th Upon request, the second hydrotherapy session is deemed complete;

[0070] S6. After the second hydrotherapy is completed, stop oxygenation and let the sea cucumbers remain in the second hydrotherapy solution for the preset set time t. P The secondary hydrotherapy solution is then drained to complete the sea cucumber hydrotherapy processing.

[0071] In this embodiment, firstly, by retrieving the processing parameter vector X that matches the type of sea cucumber to be processed, precise and repeatable data-driven instructions replace the vague manual experience in traditional processing. This lays a solid foundation for the standardization of the entire process and solves the problem of poor quality uniformity caused by imprecise control. During the pretreatment and cleaning stages, the maximum oxygenation rate O is precisely calculated. MAX This involves a combination of gentle linear aeration and rhythmic pulsed aeration, along with real-time monitoring of water turbidity (T) using a turbidity sensor. rt Monitoring until the real-time water turbidity T rt Three consecutive times below the cleaning threshold T MIN This method not only effectively alleviates tissue rigor mortis caused by stress in sea cucumbers after slaughter, but also ensures the thorough removal of residual impurities from the body cavity, overcoming the shortcomings of traditional soaking methods, such as low cleanliness and impact on flavor. Most importantly, by maintaining a constant target dissolved oxygen concentration (DO2) during the secondary hydrotherapy, an oxygen-rich environment that inhibits the growth of anaerobic bacteria is actively created, preventing product spoilage and the generation of off-flavor substances such as hydrogen sulfide. Simultaneously, by monitoring the real-time conductivity change (ΔC) of the secondary hydrotherapy solution until it stabilizes within the preset equilibrium range (Cth), the absorption saturation point of nutrients can be intelligently determined. This series of closed-loop feedback controls ensures the high efficiency, cleanliness, and reliability of the sea cucumber processing process and the quality of the final product.

[0072] Example 2

[0073] This embodiment is an explanation based on Embodiment 1. Please refer to it. Figure 1 Specifically: S1 includes S11;

[0074] S11. The staff inputs the type and quality of the sea cucumber to be processed into the control panel. S The console accesses and retrieves the corresponding processing parameter vector X from the preset rule base;

[0075] The processing parameter vector X in the rule base is set by relevant professionals, including the target processing temperature θ, the target dissolution concentration DO1 for the first hydrotherapy, the target dissolution concentration DO2 for the second hydrotherapy, the target salinity C1 for the first hydrotherapy, the set of target molecular concentrations for the second hydrotherapy C2, the mass ratio of sea cucumber to liquid solution M, and the molecules for the second hydrotherapy including salt, trehalose, glycine and proline.

[0076] Online dissolved oxygen sensors were deployed in the first and second spa pools to obtain the oxygen concentration in the pools. Ultrasonic level sensors were deployed above the first and second spa pools to obtain the water level L of the spa solution. A turbidity sensor was deployed at the drain outlet of the second spa pool to obtain the real-time turbidity T of the water. rt Conductivity meters were deployed in the secondary hydrotherapy pool to obtain the real-time conductivity C of the secondary hydrotherapy solution. rt ;

[0077] The processing parameter vector X in the rule base was established after conducting numerous orthogonal experiments on different sea cucumber species. The experimental process is as follows: For the specific sea cucumber species being tested, different combinations of variables such as target processing temperature θ, target dissolution concentration DO1 for the first hydrotherapy, and target molecular concentration set C2 for the second hydrotherapy were set. Small-batch processing tests were conducted. After the tests, quality inspectors comprehensively evaluated the rehydration rate, water retention, texture, color, and sensory evaluation indicators of the finished sea cucumbers, and selected the parameter combinations that could obtain the best quality. The following are examples of recommended parameter ranges for the target salinity C1 for the first hydrotherapy and the target molecular concentration set C2 for the second hydrotherapy for different sea cucumber species, as shown in Table 1:

[0078] parameter Salted sea cucumber Fresh sea cucumber Precooked sea cucumber <![CDATA[Initial Spa Target Salinity C1]]> 3% 3% 3% <![CDATA[The set C2 of the target concentration of the secondary hydrotherapy molecules (secondary hydrotherapy salt concentration)]]> 0.5%-0.8% 0.2%-0.4% 0.3%-0.6% <![CDATA[The set C2 of the target concentration of the secondary hydrotherapy molecules (the trehalose concentration of the secondary hydrotherapy)]]> 2.0%-3.0% 1.0%-1.5% 1.5%-2.5% <![CDATA[Set of target concentrations of secondary hydrotherapy molecules C2 (concentration of glycine in secondary hydrotherapy)]]> 0.7%-1.0% 0.5%-0.7% 0.6%-0.8% <![CDATA[The set C2 of the target concentrations of the secondary hydrotherapy molecules (the proline concentration of the secondary hydrotherapy)]]> 0.8%-1.0% 0.5%-0.6% 0.6%-0.9%

[0079] The values ​​mentioned above are only recommended parameter ranges for this embodiment. Specific values ​​can be set according to actual generation requirements.

[0080] In this embodiment, by solidifying and precisely defining the processing technology knowledge into a multi-dimensional processing technology parameter vector X, this method transforms the vague manual experience in traditional processing into a standardized set of digital instructions that can be precisely executed by a computer, including the target processing temperature θ, the target salinity C1 for the first hydrotherapy session, and the set of target molecular concentrations C2 for the second hydrotherapy session. This provides a solid data foundation for the refined and standardized execution of all subsequent steps. Simultaneously, this step also includes precisely deploying a series of sensors at different locations on the processing equipment to form the physical basis of the entire closed-loop control. Specifically, online dissolved oxygen sensors are deployed in the first and second hydrotherapy pools to obtain the real-time oxygen concentration in the pools; ultrasonic level sensors are deployed above these two pools to obtain the hydrotherapy solution level L; and a turbidity sensor is deployed at the drain outlet of the second pool in the first hydrotherapy session to obtain the real-time turbidity T of the water. rt In the secondary hydrotherapy pool, a conductivity meter was deployed to obtain the real-time conductivity C of the secondary hydrotherapy solution. rt This deep integration of data commands and physical perception ensures that the method can not only execute preset commands but also perceive real-time states, providing a solid and reliable data foundation and physical carrier for all subsequent intelligent decisions.

[0081] Example 3

[0082] This embodiment is an explanation based on Embodiment 2. Please refer to it. Figure 1 Specifically: S2 includes S21;

[0083] S21, Based on the sea cucumber quality W S The processing parameters include the initial hydrotherapy target salinity C1 and the sea cucumber-to-liquid solution mass ratio M in the vector X. The initial hydrotherapy solution is prepared and its temperature is stably controlled at the target processing temperature θ. The sea cucumbers to be processed are then placed in the first hydrotherapy tank for initial hydrotherapy pretreatment. The first stage of the initial hydrotherapy pretreatment is as follows:

[0084] The first pool of the initial hydrotherapy session was oxygenated using an oxygenation device, allowing the oxygen flow rate (O2) to smoothly increase linearly from 100 L / min to the maximum oxygen flow rate (O2) over 15 minutes. MAX Among them, the maximum oxygenation rate O MAX The concentration of dissolved oxygen (DO1) for the first hydrotherapy session is calculated based on the processing parameter vector X, and must not exceed 300 L / min. If the calculated result exceeds 300 L / min, then 300 L / min is used. The calculation is performed at a specified time t. R Within, a specified volume V of spa solution is drawn from the initial dissolved oxygen concentration (DO) of the first spa treatment. S1The total oxygen mass is increased to the maximum dissolved oxygen concentration (DO1) of the initial hydrotherapy session. Combined with the oxygen conversion rate (DOT) of the oxygen injection equipment, the maximum oxygen flow rate (O) is calculated in reverse. MAX ;

[0085] Among them, the maximum oxygenation rate O MAX The calculation expression is as follows:

[0086] ;

[0087] In the formula, t R1 This indicates the designated time for the first stage of the initial spa treatment, which is 15 minutes during the initial spa pretreatment phase. DO S1 The initial dissolved oxygen concentration for the first hydrotherapy session is obtained by an online dissolved oxygen sensor deployed in the first pool of the first hydrotherapy session before the oxygen injection equipment operates. V represents the volume of the prepared first hydrotherapy solution, obtained by multiplying the hydrotherapy solution water level L obtained by an ultrasonic level sensor deployed in the first pool of the first hydrotherapy session by the preset bottom area S of the pool. DOT represents the oxygen conversion rate of the oxygen injection equipment, obtained by measuring the change in oxygen concentration in the liquid at a fixed oxygen flow rate over a fixed time period in conjunction with an online dissolved oxygen sensor. The unit is expressed as milligrams per liter.

[0088] S2 includes S22;

[0089] S22, The second stage of the initial hydrotherapy pretreatment is as follows:

[0090] The oxygen supply capacity of the oxygen injection equipment reached its maximum. MAX At that time, the continuous oxygen injection was switched to rhythmic pulse oxygen injection, with the maximum oxygen flow rate O2. MAX Follow the oxygen infusion cycle of 10 seconds, then completely stop the oxygen infusion and rest for 20 seconds, repeating this cycle for 15 minutes to complete the first hydrotherapy pretreatment.

[0091] S3 includes S31;

[0092] S31. After completing the initial hydrotherapy pretreatment, the sea cucumbers are transferred to the second pool of the initial hydrotherapy for deep cleaning. The deep cleaning process is as follows:

[0093] The second water tank of the first hydrotherapy was subjected to a rhythmic pulse oxygenation method, similar to the second stage of the first hydrotherapy pretreatment. A circulating filtration tank was connected to the drain outlet, and the filtered first hydrotherapy solution was returned to the second water tank. Simultaneously, a turbidity sensor deployed at the drain outlet monitored the real-time water turbidity T. rt The monitoring frequency is once per minute. When the real-time water turbidity T is detected... rt Three consecutive cleaning thresholds T < preset cleaning threshold MIN When the cleaning work is completed, it is considered finished.

[0094] In this embodiment, based on the sea cucumber mass W S The sea cucumber mass ratio M to the liquid solution in the processing parameter vector X, along with the target salinity C1 for the first hydrotherapy session, is used to automatically prepare the first hydrotherapy solution in the first pool, and the solution temperature is stably controlled at the target processing temperature θ. After the sea cucumber to be processed is placed in the pool, oxygenation pretreatment is initiated. The initial dissolved oxygen concentration DOS1 for the first hydrotherapy session is obtained by an online dissolved oxygen sensor deployed in the first pool, and the hydrotherapy solution water level L is obtained by an ultrasonic level sensor. Combined with the preset pool bottom area S, the solution volume V is calculated. Then, the maximum oxygenation rate O is activated. MAX The calculation expression, combined with the maximum dissolved oxygen concentration DO1 of the first hydrotherapy in the processing parameter vector X, and the specified time t R1 And using the pre-calibrated oxygen conversion rate (DOT) of the oxygen injection equipment, the maximum oxygen flow rate (O) required to achieve the target is calculated. MAX If the maximum oxygen flux O MAX If the calculated result does not exceed 300 L / min, this value will be adopted; otherwise, 300 L / min will be used as the maximum oxygen flow rate. MAX This calculation process ensures that the intensity of subsequent treatments is quantified and repeatable. Based on this, the pretreatment is initiated in a controlled, gentle awakening manner: within the first 15 minutes, the oxygen flux O0 linearly and smoothly increases from 100 L / min to the calculated maximum oxygen flux O0. MAX This gradual intervention effectively avoids secondary shocks to sea cucumbers whose muscle tissue has contracted and stiffened due to slaughter. Subsequently, the pretreatment enters its second stage, with the system switching to a rhythmic pulse oxygenation mode, using maximum oxygenation rate O2. MAX The process is repeated for 15 minutes, following a rhythm of 10 seconds of oxygenation followed by 20 seconds of rest. This design combines highly effective physical impact with a resting period that buffers the tissue, creating a low-damage physical massage that effectively loosens impurities on the surface and in the body cavity while avoiding damage to the tissue from continuous mechanical force. After pretreatment, the sea cucumbers enter the deep cleaning stage, continuing the rhythmic pulsed oxygenation method. An automated cleaning process endpoint determination mechanism is introduced: a turbidity sensor deployed at the drain outlet continuously monitors the real-time water turbidity T at a frequency of once per minute. rt Until the real-time water turbidity T rt Three consecutive cleaning thresholds T < preset cleaning threshold MIN Only when the time is right is the purification process considered complete. This results-oriented closed-loop control completely abandons the traditional fixed-time control model, ensuring that every batch of sea cucumbers meets a uniform cleanliness standard.

[0095] Example 4

[0096] This embodiment is an explanation based on Embodiment 3. Please refer to it. Figure 1 and Figure 3 Specifically: S4 includes S41;

[0097] S41. After the sea cucumber cleaning is completed, according to the sea cucumber quality W S The secondary hydrotherapy solution is prepared using the target concentration ratio C2 of the secondary hydrotherapy molecules and the mass ratio M of sea cucumber and liquid solution in the processing parameter vector X. The volume of the secondary hydrotherapy solution is the same as the volume V of the primary hydrotherapy solution, and the solution temperature is stably controlled at the target processing temperature θ. The real-time dissolved oxygen concentration (DO) of the secondary hydrotherapy solution is obtained using an online dissolved oxygen sensor deployed in the secondary hydrotherapy tank. rt The monitoring frequency is once per minute. Based on the target dissolved oxygen concentration (DO2) of the secondary hydrotherapy in the processing parameter vector X, combined with the maximum oxygen flow rate (O2), the monitoring frequency is determined. MAX Calculation formula for calculating real-time oxygen flux O rt Dynamically adjust the real-time oxygen flow rate (O2). rt ;

[0098] Among them, if the current monitoring result is the real-time dissolved oxygen concentration (DO) of the secondary hydrotherapy solution... rt If the target dissolved oxygen concentration (DO2) for the secondary hydrotherapy is reached, a stop command is sent to the oxygen injection equipment.

[0099] If the current monitoring result is the real-time dissolved oxygen concentration (DO) of the secondary hydrotherapy solution... rt If the target dissolved oxygen concentration (DO2) for secondary hydrotherapy is ≤, then calculate the real-time oxygen flux (O2). rt And based on the calculation results, a dynamic adjustment command is sent to adjust the real-time oxygen supply (O2). rt The calculation expression is as follows:

[0100] ;

[0101] In the formula, t R2 This indicates the monitoring interval of the online dissolved oxygen sensor, specifically 1 minute.

[0102] S5 includes S51;

[0103] S51. Monitor the real-time conductivity C of the secondary hydrotherapy solution using a deployed conductivity meter. rt The monitoring frequency is once per minute, and the real-time conductivity C of the secondary hydrotherapy solution is calculated immediately after each monitoring. rt The conductivity C of the secondary hydrotherapy solution at the previous moment rt-1 The difference was used to obtain the real-time conductivity change value ΔC of the secondary hydrotherapy solution;

[0104] S5 includes S52;

[0105] S52. The real-time conductivity change value ΔC of the secondary hydrotherapy solution is compared with the preset equilibrium range C. th A comparison was made, in which the preset equilibrium interval Cth This includes the left value C1 of the equilibrium interval and the right value C2 of the equilibrium interval;

[0106] If the real-time conductivity change value ΔC of the secondary hydrotherapy solution does not reach ≥ the left value C1 of the equilibrium interval and ≤ the right value C2 of the equilibrium interval for three consecutive times, it is determined that the sea cucumber has not absorbed the hydrotherapy solution sufficiently, the secondary hydrotherapy is not completed, and the secondary hydrotherapy work should continue.

[0107] If the real-time conductivity change value ΔC of the secondary hydrotherapy solution reaches ≥ the left value C1 of the equilibrium interval and ≤ the right value C2 of the equilibrium interval for three consecutive times, it is determined that the sea cucumber has fully absorbed the hydrotherapy solution and the secondary hydrotherapy has been completed. A stop oxygen injection command is sent to the oxygen injection equipment.

[0108] Among them, the preset equilibrium interval C th The determination of the equilibrium interval left value C1 and equilibrium interval right value C2 is based on the analysis of the conductivity change curve during the secondary hydrotherapy process. During the experimental phase, the conductivity change value ΔC of different sea cucumbers was recorded throughout the secondary hydrotherapy process. When the marginal benefit of the ion exchange process becomes extremely low, the ΔC curve enters a small fluctuation range around zero. The amplitude of this fluctuation is mainly caused by sensor measurement noise and minute temperature and turbulence changes in the water. The upper and lower boundaries of this stable fluctuation range are defined as the equilibrium interval left value C1 and equilibrium interval right value C2.

[0109] S6 includes S61;

[0110] S61. After the secondary hydrotherapy is completed, a stop oxygenation command is sent to the oxygenation equipment, allowing the sea cucumbers to remain still in the secondary hydrotherapy solution until the preset set settling time t is reached. P The secondary hydrotherapy solution is drained to complete the sea cucumber hydrotherapy processing;

[0111] Among them, the preset settling time t P After the second hydrotherapy session, samples were taken for tissue section analysis and component detection at different settling times, such as 5 min, 10 min, 15 min, and 20 min. This determined the shortest time required for the most uniform distribution of absorbed nutrients within the sea cucumber body wall tissue, and this time was used as the preset settling time t for this type of sea cucumber. P .

[0112] The specific example of sea cucumber processing is as follows:

[0113] In this embodiment, the sea cucumbers to be processed are salted sea cucumbers, fresh sea cucumbers after autolytic enzyme inactivation, and pre-cooked sea cucumbers. The range of processing parameters in vector X varies depending on the type of sea cucumber:

[0114] Target processing temperature θ: 0 to 10℃, target dissolution concentration DO1 for the first hydrotherapy: 3%, sea cucumber to liquid solution mass ratio M: 1:50 to 1:200, target molecular concentration set C2 for the second hydrotherapy: {salt: 0.2% to 0.8%, trehalose: 1% to 3%, glycine: 0.5% to 1%, proline: 0.5% to 1%};

[0115] This example uses fresh sea cucumbers that have undergone autolysis enzyme inactivation:

[0116] Sea cucumber quality W S 20kg, sea cucumber and liquid solution mass ratio M: 1:80;

[0117] The maximum dissolved oxygen concentration (DO1) for the first hydrotherapy session was 20.0 mg / L, and the oxygen conversion rate of the oxygen injection equipment was 8.0 mg / L.

[0118] The volume of the initial hydrotherapy solution (V) was 1560 L, and the initial dissolved oxygen concentration (DO) for the initial hydrotherapy was... S1 5.2 mg / L;

[0119] Maximum oxygenation rate O MAX The calculation example is as follows:

[0120] ;

[0121] Table 2 shows an example of how to determine the end point of the deep cleaning stage:

[0122] Table 2:

[0123] Cleaning time (min) Real-time water turbidity Trt(NTU) <![CDATA[Is it less than T MIN > Remark …… …… …… 18 2.5 no 19 2.1 no 20 1.9 yes First time meeting the standard 21 1.8 yes Second time meeting the standard 22 1.7 yes Third time meeting the standard

[0124] At the 22nd minute, the real-time water turbidity Trt was detected to be less than the preset cleaning threshold TMIN for three consecutive times, indicating that the deep cleaning work was completed.

[0125] Table 3 shows an example of how to determine the endpoint of the second hydrotherapy stage:

[0126] Table 3:

[0127] Second hydrotherapy session duration (min) <![CDATA[Real-time conductivity C of the secondary spa solution rt (μS / cm)]]> Real-time conductivity change of the secondary hydrotherapy solution ΔC ((μS / cm) / min) Is it within the Cth interval (≥-5.0 and ≤+5.0)? Remark …… …… …… …… …… 57 14445 +15 no 58 14453 +8 no 59 14457 +4 yes First time meeting the standard 60 14460 +3 yes Second time meeting the standard 61 14458 -2 yes Third time meeting the standard

[0128] At the 61st minute, the system detected that the real-time conductivity change value ΔC of the secondary hydrotherapy solution had fallen within the preset equilibrium range C of [-5.0, +5.0] for three consecutive times. th This indicates that the salt leaching process within the sea cucumber is basically complete, the internal and external ion concentration gradients tend to disappear, and a dynamic equilibrium is reached. Therefore, it is determined that the secondary hydrotherapy has been completed.

[0129] In this embodiment, after the deeply cleaned sea cucumbers enter the secondary hydrotherapy pool, a secondary hydrotherapy solution rich in salt, trehalose, glycine, and proline is automatically prepared based on the target concentration ratio C2 of the secondary hydrotherapy molecules in the processing parameter vector X. Subsequently, an intelligent conditioning mode combining active environmental creation and passive biological state perception is activated. On one hand, to create the optimal biochemical environment for nutrient absorption, an online dissolved oxygen sensor continuously monitors the real-time dissolved oxygen concentration (DO) in the secondary hydrotherapy solution at a frequency of once per minute. rt The oxygen supply is compared in real time with the target dissolved oxygen concentration (DO2) for secondary hydrotherapy set in the processing parameter vector X, and the real-time oxygen flow rate (O2) is dynamically adjusted through real-time calculation. rt This ensures that dissolved oxygen remains constant at the target level, effectively inhibiting microbial activity and oxidative deterioration. On the other hand, a conductivity meter is used to transform the processed sea cucumber itself into a biosensor to determine the endpoint of the conditioning process. Real-time monitoring of the conductivity C of the secondary hydrotherapy solution is conducted. rt The real-time conductivity change value ΔC of the secondary hydrotherapy solution was calculated over several minutes. The real-time conductivity change value ΔC of the secondary hydrotherapy solution directly reflects the real-time rate at which the sea cucumber absorbs ions from the solution. When the sea cucumber's absorption capacity approaches saturation, its absorption rate decreases significantly, and the ΔC value decreases accordingly until it stabilizes within a constant range. Only when the real-time conductivity change value ΔC of the secondary hydrotherapy solution stabilizes within the preset equilibrium range Cth for three consecutive times is the absorption process considered fully completed. Finally, all interventions are stopped, and the sea cucumber is allowed to stand in a nutritionally balanced solution for a preset standing time tP for final tissue stabilization. This ensures that the absorbed substances are evenly distributed within the tissue, and the water flow massage brought by oxygenation promotes water penetration. After this process, the dried sea cucumber has formed channels and water-locking structures that facilitate rapid water passage. When consumers re-soak it, water can penetrate more quickly and evenly, thus shortening the soaking time and achieving more uniform expansion. This method elevates the traditional one-way processing-execution model to a two-way application-response interaction model. By actively creating a constant and optimal environment and making intelligent decisions based on the absorption status of sea cucumbers, it fundamentally solves the core pain point of inconsistent taste, flavor, and form of the final product caused by insufficient or excessive processing.

[0130] Example 5

[0131] A control system for easily flammable sea cucumber processing based on oxygen infusion combined with hydrotherapy, please refer to... Figure 2 Specifically, it includes a process parameter acquisition module, a cleaning pretreatment module, a deep cleaning module, a constant dissolved oxygen control module, a duration dynamic decision-making module, and a state stabilization module.

[0132] The process parameter acquisition module allows staff to input the type and quality (W) of the sea cucumber to be processed into the console.S The console accesses and retrieves the corresponding processing parameter vector X from the preset rule base, and deploys multiple sensors in the spa pool;

[0133] The cleaning pretreatment module adjusts the cleaning process according to the sea cucumber quality W. S Prepare the initial hydrotherapy solution based on the process parameter vector X, and calculate the maximum oxygen flux O based on the maximum dissolved oxygen concentration DO1 in the initial hydrotherapy of the process parameter vector X. MAX The sea cucumbers underwent their first hydrotherapy pretreatment.

[0134] After undergoing initial pre-treatment with sea cucumbers, the deep cleaning module transfers them to the second pool of the initial spa for deep cleaning. The real-time turbidity (T) of the water is monitored by a turbidity sensor at the drain outlet. rt Reaching the preset cleaning threshold T MIN When required, the deep cleaning work is deemed complete;

[0135] The constant dissolved oxygen control module controls the dissolved oxygen based on the sea cucumber mass W. S The secondary hydrotherapy solution was prepared based on the processing parameter vector X, and the real-time oxygen flux (O2) was calculated based on the target dissolved oxygen concentration (DO2) in the secondary hydrotherapy solution from the processing parameter vector X. rt Dynamically adjust the real-time oxygen flow rate (O2). rt ;

[0136] The duration dynamic decision module monitors the real-time conductivity C of the secondary hydrotherapy solution using a deployed conductivity meter. rt When the real-time conductivity change value ΔC of the secondary hydrotherapy solution reaches the preset equilibrium range C th Upon request, the second hydrotherapy session is deemed complete;

[0137] After the stabilization module completes the secondary hydrotherapy, oxygenation is stopped, and the sea cucumbers are left to stand in the secondary hydrotherapy solution for the preset set time t. P The secondary hydrotherapy solution is drained to complete the sea cucumber hydrotherapy processing;

[0138] The system includes an input terminal and an output terminal connected by electrical signals;

[0139] The input terminals include the following:

[0140] The human-machine interface allows staff to input initial commands such as the type and quality (WS) of the sea cucumbers to be processed, corresponding to some functions of the process parameter acquisition module. Online dissolved oxygen sensors are deployed in the first and second water tanks of the initial hydrotherapy session to provide real-time dissolved oxygen concentration signals to the PLC. Ultrasonic level sensors are deployed above all tanks to provide the PLC with the hydrotherapy solution level (L) signal. A turbidity sensor is deployed at the drain outlet of the second water tank of the initial hydrotherapy session to provide the PLC with real-time water turbidity (T). rtThe conductivity meter is deployed in the secondary hydrotherapy pool to provide the PLC with the real-time conductivity C of the secondary hydrotherapy solution. rt Signal;

[0141] The output terminals include the following:

[0142] The solenoid valves and flow regulators of the oxygen injection equipment are used to precisely control the start, stop, and amount of oxygen flow according to the instructions of the PLC. The water pump is used for solution preparation, circulation, and discharge. The temperature control unit is used to stabilize the solution temperature at the target processing temperature θ.

[0143] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for controlling the processing of sea cucumber prone to infection based on oxygen injection combined with hydrotherapy, characterized in that: Includes the following steps: S1. The staff inputs the type and quality of the sea cucumber to be processed into the control panel. S The console accesses and retrieves the corresponding processing parameter vector X from the preset rule base, and deploys multiple sensors in the spa pool; S2, based on sea cucumber quality W S Prepare the initial hydrotherapy solution based on the process parameter vector X, and calculate the maximum oxygen flux O based on the maximum dissolved oxygen concentration DO1 in the initial hydrotherapy of the process parameter vector X. MAX The sea cucumbers underwent their first hydrotherapy pretreatment. S3. After completing the initial hydrotherapy pretreatment, the sea cucumbers are transferred to the second hydrotherapy pool for deep cleaning, with the real-time water turbidity T monitored by a turbidity sensor at the drain outlet. rt Reaching the preset cleaning threshold T MIN When required, the deep cleaning work is deemed complete; S4, based on sea cucumber quality W S The secondary hydrotherapy solution was prepared based on the processing parameter vector X, and the real-time oxygen flux (O2) was calculated based on the target dissolved oxygen concentration (DO2) in the secondary hydrotherapy solution from the processing parameter vector X. rt Dynamically adjust the real-time oxygen flow rate (O2). rt ; S5. Monitor the real-time conductivity C of the secondary hydrotherapy solution using a deployed conductivity meter. rt When the real-time conductivity change value ΔC of the secondary hydrotherapy solution reaches the preset equilibrium range C th Upon request, the second hydrotherapy session is deemed complete; S6. After the second hydrotherapy is completed, oxygenation is stopped, and the sea cucumbers are left to stand in the second hydrotherapy solution for the preset standing time t. P The secondary hydrotherapy solution is then drained to complete the sea cucumber hydrotherapy processing.

2. The method for controlling flammable sea cucumber processing based on oxygen injection and synergistic hydrotherapy according to claim 1, characterized in that: S1 includes S11; S11. The staff inputs the type and quality of the sea cucumber to be processed into the control panel. S The console accesses and retrieves the corresponding processing parameter vector X from the preset rule base; The processing parameter vector X in the rule base is set by relevant professionals, including the target processing temperature θ, the target dissolution concentration DO1 for the first hydrotherapy, the target dissolution concentration DO2 for the second hydrotherapy, the target salinity C1 for the first hydrotherapy, the set of target molecular concentrations for the second hydrotherapy C2, the mass ratio of sea cucumber to liquid solution M, and the molecules for the second hydrotherapy including salt, trehalose, glycine and proline. Online dissolved oxygen sensors were deployed in the first and second spa pools to obtain the oxygen concentration in the pools. Ultrasonic level sensors were deployed above the first and second spa pools to obtain the water level L of the spa solution. A turbidity sensor was deployed at the drain outlet of the second spa pool to obtain the real-time turbidity T of the water. rt Conductivity meters were deployed in the secondary hydrotherapy pool to obtain the real-time conductivity C of the secondary hydrotherapy solution. rt .

3. The method for controlling flammable sea cucumber processing based on oxygen injection and synergistic hydrotherapy according to claim 2, characterized in that: S2 includes S21; S21, Based on the sea cucumber quality W S The processing parameters include the initial hydrotherapy target salinity C1 and the sea cucumber-to-liquid solution mass ratio M in the vector X. The initial hydrotherapy solution is prepared and its temperature is stably controlled at the target processing temperature θ. The sea cucumbers to be processed are then placed in the first hydrotherapy tank for initial hydrotherapy pretreatment. The first stage of the initial hydrotherapy pretreatment is as follows: The first pool of the initial hydrotherapy session was oxygenated using an oxygenation device, allowing the oxygen flow rate (O2) to smoothly increase linearly from 100 L / min to the maximum oxygen flow rate (O2) over 15 minutes. MAX Among them, the maximum oxygenation rate O MAX The concentration of dissolved oxygen (DO1) for the first hydrotherapy session is calculated based on the processing parameter vector X, and must not exceed 300 L / min. If the calculated result exceeds 300 L / min, then 300 L / min is used. The calculation is performed at a specified time t. R Within, a specified volume V of spa solution is drawn from the initial dissolved oxygen concentration (DO) of the first spa treatment. S1 The total oxygen mass is increased to the maximum dissolved oxygen concentration (DO1) of the initial hydrotherapy session. Combined with the oxygen conversion rate (DOT) of the oxygen injection equipment, the maximum oxygen flow rate (O) is calculated in reverse. MAX ; Among them, the maximum oxygenation rate O MAX The calculation expression is as follows: ； In the formula, t R1 This indicates the designated time for the first stage of the initial spa treatment, which is 15 minutes during the initial spa pretreatment phase. DO S1 The initial dissolved oxygen concentration for the first hydrotherapy session is obtained by an online dissolved oxygen sensor deployed in the first pool of the first hydrotherapy session before the oxygen injection equipment operates. V represents the volume of the prepared first hydrotherapy solution, obtained by multiplying the hydrotherapy solution level L obtained by an ultrasonic level sensor deployed in the first pool of the first hydrotherapy session by the preset bottom area S of the pool. DOT represents the oxygen conversion rate of the oxygen injection equipment, obtained by measuring the change in oxygen concentration in the liquid at a fixed oxygen flow rate over a fixed time period in conjunction with an online dissolved oxygen sensor, and is expressed in milligrams per liter.

4. The method for controlling flammable sea cucumber processing based on oxygen injection and synergistic hydrotherapy according to claim 3, characterized in that: S2 includes S22; S22, The second stage of the initial hydrotherapy pretreatment is as follows: The oxygen supply capacity of the oxygen injection equipment reached its maximum. MAX At that time, the continuous oxygen injection was switched to rhythmic pulse oxygen injection, with the maximum oxygen flow rate O2. MAX Perform the following routine: infuse oxygen for 10 seconds, then completely stop and rest for 20 seconds. Repeat this cycle of infusing and resting for 15 minutes to complete the first hydrotherapy pretreatment.

5. A method for controlling flammable sea cucumber processing based on oxygen injection and synergistic hydrotherapy according to claim 4, characterized in that: S3 includes S31; S31. After completing the initial hydrotherapy pretreatment, the sea cucumbers are transferred to the second pool of the initial hydrotherapy for deep cleaning. The deep cleaning process is as follows: The second water tank of the first hydrotherapy was subjected to a rhythmic pulse oxygenation method, similar to the second stage of the first hydrotherapy pretreatment. A circulating filtration tank was connected to the drain outlet, and the filtered first hydrotherapy solution was returned to the second water tank. Simultaneously, a turbidity sensor deployed at the drain outlet monitored the real-time water turbidity T. rt The monitoring frequency is once per minute. When the real-time water turbidity T is detected... rt Three consecutive cleaning thresholds T < preset cleaning threshold MIN When the cleaning work is completed, it is considered finished.

6. A method for controlling flammable sea cucumber processing based on oxygen injection and synergistic hydrotherapy according to claim 2, characterized in that: S4 includes S41; S41. After the sea cucumber cleaning is completed, according to the sea cucumber quality W S The secondary hydrotherapy solution is prepared using the target concentration ratio C2 of the secondary hydrotherapy molecules and the mass ratio M of sea cucumber and liquid solution in the processing parameter vector X. The volume of the secondary hydrotherapy solution is the same as the volume V of the primary hydrotherapy solution, and the solution temperature is stably controlled at the target processing temperature θ. The real-time dissolved oxygen concentration (DO) of the secondary hydrotherapy solution is obtained using an online dissolved oxygen sensor deployed in the secondary hydrotherapy tank. rt The monitoring frequency is once per minute. Based on the target dissolved oxygen concentration (DO2) for secondary hydrotherapy in the processing parameter vector X, combined with the maximum oxygen flow rate (O2), the monitoring frequency is determined. MAX Calculation formula for calculating real-time oxygen flux O rt Dynamically adjust the real-time oxygen flow rate (O2). rt ; Among them, if the current monitoring result is the real-time dissolved oxygen concentration (DO) of the secondary hydrotherapy solution... rt If the target dissolved oxygen concentration (DO2) for the secondary hydrotherapy is reached, a stop command is sent to the oxygen injection equipment. If the current monitoring result is the real-time dissolved oxygen concentration (DO) of the secondary hydrotherapy solution... rt If the target dissolved oxygen concentration (DO2) for secondary hydrotherapy is ≤, then calculate the real-time oxygen flux (O2). rt And based on the calculation results, a dynamic adjustment command is sent to adjust the real-time oxygen supply (O2). rt The calculation expression is as follows: ； In the formula, t R2 This indicates the monitoring interval for the online dissolved oxygen sensor, specifically 1 minute.

7. A method for controlling flammable sea cucumber processing based on oxygen injection and synergistic hydrotherapy according to claim 6, characterized in that: S5 includes S51; S51. Monitor the real-time conductivity C of the secondary hydrotherapy solution using a deployed conductivity meter. rt The monitoring frequency is once per minute, and the real-time conductivity C of the secondary hydrotherapy solution is calculated immediately after each monitoring. rt The conductivity C of the secondary hydrotherapy solution at the previous moment rt-1 The difference was used to obtain the real-time conductivity change value ΔC of the secondary hydrotherapy solution.

8. A method for controlling flammable sea cucumber processing based on oxygen injection and synergistic hydrotherapy according to claim 7, characterized in that: S5 includes S52; S52. The real-time conductivity change value ΔC of the secondary hydrotherapy solution is compared with the preset equilibrium range C. th A comparison was made, in which the preset equilibrium interval C th This includes the left value C1 of the equilibrium interval and the right value C2 of the equilibrium interval; If the real-time conductivity change value ΔC of the secondary hydrotherapy solution does not reach ≥ the left value C1 of the equilibrium interval and ≤ the right value C2 of the equilibrium interval for three consecutive times, it is determined that the sea cucumber has not absorbed the hydrotherapy solution sufficiently, the secondary hydrotherapy is not completed, and the secondary hydrotherapy work should continue. If the real-time conductivity change value ΔC of the secondary hydrotherapy solution reaches ≥ the left value C1 of the equilibrium interval and ≤ the right value C2 of the equilibrium interval for three consecutive times, it is determined that the sea cucumber has fully absorbed the hydrotherapy solution and the secondary hydrotherapy has been completed. A stop oxygenation command is then sent to the oxygenation equipment.

9. A method for controlling flammable sea cucumber processing based on oxygen injection and synergistic hydrotherapy according to claim 8, characterized in that: S6 includes S61; S61. After the secondary hydrotherapy is completed, a stop oxygenation command is sent to the oxygenation equipment, allowing the sea cucumbers to remain still in the secondary hydrotherapy solution until the preset set settling time t is reached. P The secondary hydrotherapy solution is then drained to complete the sea cucumber hydrotherapy processing.

10. A control system for easily flammable sea cucumber processing based on oxygen injection and synergistic hydrotherapy, applied to the easily flammable sea cucumber processing control method based on oxygen injection and synergistic hydrotherapy as described in any one of claims 1 to 9, characterized in that: It includes a process parameter acquisition module, a cleaning pretreatment module, a deep cleaning module, a constant dissolved oxygen control module, a duration dynamic decision-making module, and a state stabilization module; The process parameter acquisition module allows staff to input the type and quality (W) of the sea cucumber to be processed into the console. S The console accesses and retrieves the corresponding processing parameter vector X from the preset rule base, and deploys multiple sensors in the spa pool; The cleaning pretreatment module adjusts the cleaning process according to the sea cucumber quality W. S Prepare the initial hydrotherapy solution based on the process parameter vector X, and calculate the maximum oxygen flux O based on the maximum dissolved oxygen concentration DO1 in the initial hydrotherapy of the process parameter vector X. MAX The sea cucumbers underwent their first hydrotherapy pretreatment. After undergoing initial pre-treatment with sea cucumbers, the deep cleaning module transfers them to the second pool of the initial spa for deep cleaning. The real-time turbidity (T) of the water is monitored by a turbidity sensor at the drain outlet. rt Reaching the preset cleaning threshold T MIN When required, the deep cleaning work is deemed complete; The constant dissolved oxygen control module controls the dissolved oxygen based on the sea cucumber mass W. S The secondary hydrotherapy solution was prepared based on the processing parameter vector X, and the real-time oxygen flux (O2) was calculated based on the target dissolved oxygen concentration (DO2) in the secondary hydrotherapy solution from the processing parameter vector X. rt Dynamically adjust the real-time oxygen flow rate (O2). rt ; The duration dynamic decision module monitors the real-time conductivity C of the secondary hydrotherapy solution using a deployed conductivity meter. rt When the real-time conductivity change value ΔC of the secondary hydrotherapy solution reaches the preset equilibrium range C th Upon request, the second hydrotherapy session is deemed complete; After the stabilization module completes the secondary hydrotherapy, oxygenation is stopped, and the sea cucumbers are left to stand in the secondary hydrotherapy solution for the preset set time t. P The secondary hydrotherapy solution is drained to complete the sea cucumber hydrotherapy processing; The system includes an input terminal and an output terminal connected by electrical signals; The input terminals include the following: The human-machine interface allows staff to input initial commands such as the type and quality (WS) of the sea cucumbers to be processed, corresponding to some functions of the process parameter acquisition module. Online dissolved oxygen sensors are deployed in the first and second water tanks of the initial hydrotherapy session to provide real-time dissolved oxygen concentration signals to the PLC. Ultrasonic level sensors are deployed above all tanks to provide the PLC with the hydrotherapy solution level (L) signal. A turbidity sensor is deployed at the drain outlet of the second water tank of the initial hydrotherapy session to provide the PLC with real-time water turbidity (T). rt The conductivity meter is deployed in the secondary hydrotherapy pool to provide the PLC with the real-time conductivity C of the secondary hydrotherapy solution. rt Signal; The output terminals include the following: The solenoid valves and flow regulators of the oxygen injection equipment are used to precisely control the start, stop, and amount of oxygen flow according to the instructions of the PLC. The water pump is used for solution preparation, circulation, and discharge. The temperature control unit is used to stabilize the solution temperature at the target processing temperature θ.

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