Medical food moisture content non-destructive detection device and method

This non-destructive testing device for the moisture content of medical food, which integrates a drying system, a condensation system, and image recognition technology, solves the problem of sample destruction in existing testing methods and achieves high-precision, low-cost testing results.

CN121453575APending Publication Date: 2026-02-03AFFILIATED HOSPITAL OF JIANGSU UNIV
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Patent Information

Application Number
CN202511716377.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-21
Publication Date
2026-02-03

AI Technical Summary

Technical Problem

Existing methods for detecting the moisture content of medical food require destroying the integrity of the sample, resulting in high testing costs and wasted resources, especially for small-batch customized medical food.

Method used

A non-destructive testing device for the moisture content of medical food was designed, integrating a drying system, a condensation system, a weighing mechanism, an image recognition module, and a temperature and humidity monitoring module. It achieves non-destructive testing through low-temperature drying, condensate collection, and image recognition technology.

Benefits of technology

It achieves high-precision detection of moisture content in medical food, with a detection error rate of less than 1%. The sample structure and nutritional components are intact, making it suitable for small-batch customized medical food and reducing resource consumption.

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Abstract

The invention discloses a non-destructive detection device and method for the moisture content of medical food, and the device comprises an outer box body, and the bottom of the outer box body is provided with a supporting assembly and a moving assembly; the sample water content detection mechanism comprises a drying box, a drying system and a condensing system; the weighing mechanism is mounted on the front side of the outer box body; the temperature and humidity monitoring module is mounted in the drying box; the image recognition modules are respectively mounted in the drying box and the weighing mechanism; the image recognition unit and the temperature and humidity monitoring module are connected with the terminal system. The medical food does not need to be smashed and sampled, the complete sample still keeps the original physical structure and nutritional ingredients after being dried at low temperature, the sample can be directly eaten by a patient after being detected, the problem of'sample waste 'of traditional destructive detection is thoroughly solved, the method is particularly suitable for small-batch customized medical food, and the clinical resource loss is reduced.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical food quality detection, in particular to a medical food water content non-destructive detection device and method. BACKGROUND

[0002] Medical food is a special nutritional supply carrier for special physiological state groups (such as postoperative rehabilitation patients, weak elderly groups, and patients with digestive dysfunction, etc.), and the water content thereof directly affects the taste adaptability, digestion and absorption efficiency, microbial breeding risk, and shelf life stability of the product. For example, too high water content of enteral nutrition suspension can easily lead to stratification of the system and degradation of nutritional ingredients, and too low water content can cause difficulty in swallowing for patients; when the water content of semi-liquid medical porridge deviates by more than 5%, it can significantly affect the eating tolerance of patients, and even induce gastrointestinal discomfort, therefore, the water content of medical food needs to be strictly controlled within a certain standard range, and accurate detection is crucial. Currently, the existing mainstream method for detecting the water content of medical food (such as the oven drying method) requires sampling, crushing, and then drying and weighing the medical food, which can destroy the integrity of the sample, and the food after detection cannot be used for patients to eat, especially for small-batch customized medical food (such as personalized enteral nutrition preparations), which has high detection cost and is prone to resource waste.

[0003] Based on the above technical problems, the present application provides a medical food water content non-destructive detection device and method. SUMMARY

[0004] The purpose of the present application is to provide a medical food water content non-destructive detection device and method to solve the problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following scheme: the present application provides a medical food water content non-destructive detection device, comprising: An outer box body, a support assembly and a moving assembly are installed at the bottom of the outer box body; A sample water content detection mechanism, the sample water content detection mechanism comprises a drying oven, a drying system and a condensation system, the drying oven is provided with a plurality of groups, a plurality of through openings are vertically and equally spaced on the front side of the outer box body, a plurality of drying ovens are fixed in the through openings respectively, a box door is hinged to the front side of the drying oven, an automatic opening and closing assembly is installed on the outer box body, the automatic opening and closing assembly is hinged to the box door, the drying system and the condensation system are both installed in the outer box body and communicate with the drying oven; A weighing mechanism is installed on the front side of the outer box body; A temperature and humidity monitoring module is installed in the drying oven; An image recognition module is installed in the drying box and the weighing mechanism, respectively. The image recognition unit and the temperature and humidity monitoring module are connected with a terminal system.

[0006] The drying system comprises: A hot air machine is installed in the outer box body, a mesh frame is fixed at a front position in the drying box, a space is arranged between the mesh frame and a rear side of the drying box, and the hot air machine is communicated with the space through an air pipe. A wind wheel is rotationally connected to a side wall of the drying box. A motor is fixed in the outer box body, and the motor is shaft-connected with the wind wheel.

[0007] The condensing system comprises: A condenser is connected with the drying box through a pipeline, an air pump is installed on the pipeline, An electronic scale is provided with a collector, the collector is connected with an output end of the condenser, and the electronic scale is connected with a control.

[0008] The automatic opening and closing assembly comprises an electric control telescopic rod, one end of the electric control telescopic rod is hingedly connected to a side wall of the outer box body, the other end is rotationally connected with a pull rod, the pull rod and the electric control telescopic rod are arranged perpendicularly, a side wall of the box door is fixedly connected with a bearing seat, and the pull rod is rotationally connected to the bearing seat.

[0009] The weighing mechanism comprises: A weighing box is fixed in an installation opening in the front side of the outer box body. An electronic scale II is installed in the weighing box.

[0010] The temperature and humidity monitoring module comprises a temperature sensor and a humidity sensor, and the temperature sensor and the humidity sensor are installed in the drying box, respectively.

[0011] The image recognition module comprises: Multi-dimensional cameras are installed in the weighing box and the drying box, respectively, a heat insulation cover is installed in the drying box, and the multi-dimensional cameras in the drying box are arranged in the heat insulation cover. A light supplement lamp is installed in the drying box and the weighing box respectively.

[0012] The support assembly comprises: A support screw is vertically screwed to the bottom of the outer box body. A base is fixedly connected to the bottom of the support screw.

[0013] A non-destructive detection method for the water content of medical food comprises the following steps: First, check the device status, confirm that the support assembly at the bottom of the outer box body is stable, and the moving assembly is locked to avoid displacement of the device during detection, and start the terminal system to check whether the temperature and humidity monitoring module and the image recognition module are normally connected, ensure smooth data transmission, and then collect test samples of the food to be detected according to the same quantitative standard before the patient eats, and ensure that each sample has uniform properties to provide an accurate basis for subsequent water content detection; Step two, place the collected quantitative test samples into several drying boxes in the outer box body, close the box door, lock the box door through the automatic opening and closing assembly on the outer box body to ensure the sealing of the drying box, then start the drying system and the condensing system in the outer box body to make the drying box enter the working state, the temperature and humidity monitoring module monitors the temperature and humidity data in the drying box in real time and synchronously transmits them to the terminal system to record the drying environment parameters in real time; Step three, place the food to be eaten by the patient into the weighing mechanism on the front side of the outer box body in sequence, the weighing mechanism automatically acquires the weight of the food and uploads it to the terminal system, at the same time, the image recognition modules installed in the drying box and the weighing mechanism respectively identify the types of the samples in the drying box and the food to be eaten in the weighing mechanism, accurately transmit the food type information to the terminal system, and establish the corresponding relationship between the samples and the food to be eaten; Step four, the terminal system automatically retrieves the water content data of the corresponding test samples after drying and condensing analysis according to the food type feedback by the image recognition module, combines the weight of the food to be eaten obtained by the weighing mechanism, calculates according to the formula "water content of food to be eaten = weight of food x water content of corresponding sample", and finally outputs the calculated water content of the food to be eaten on the terminal system, completing the entire non-destructive detection process.

[0014] The present application discloses the following technical effects: Without crushing and sampling treatment of medical food, the complete sample still maintains the original physical structure and nutritional ingredients after low-temperature drying, and can be directly used for patient eating after detection, completely solving the problem of "sample waste" in traditional destructive detection, especially suitable for small-batch customized medical food (such as personalized enteral nutrition preparation), and reducing clinical resource loss. Integrated real-time humidity control loop to avoid environmental interference; moisture content is calculated by "sample weight change + condensate weight" in two dimensions, combined with image recognition to assist in judging the sample state, effectively avoiding the calculation deviation caused by traditional manual weighing error and high temperature carbonization, the detection error rate can be controlled within 1%, meeting the high-precision detection standard of medical food moisture content. Integrated design of image recognition + temperature and humidity monitoring + terminal data interaction, realizing "full parameter recording" (including sample morphology, environmental parameters, weight change curve) in the detection process, the detection report can be directly connected to the hospital nutrition management system, supporting data traceability and abnormal warning (such as automatically marking red when moisture content exceeds the standard), meeting the management specification of medical food quality traceability system, and facilitating later quality control review. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described in the following are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0016] Figure 1 It is a schematic diagram of the overall structure of the medical food moisture content non-destructive detection device of the present application; Figure 2 It is a schematic diagram of the internal structure of the medical food moisture content non-destructive detection device of the present application Figure I ; Figure 3 It is a schematic diagram of the internal structure of the medical food moisture content non-destructive detection device of the present application Figure II .

[0017] 1, outer box; 2, drying box; 3, box door; 4, hot air machine; 5, wind wheel; 6, motor; 7, condenser; 8, electric control telescopic rod; 9, pull rod; 10, weighing box; 11, electronic scale II; 12, bearing seat; 13, supporting screw; 14, base; 15, pipeline. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0019] In order to make the above objectives, characteristics and advantages of the present application more apparent, further detailed description will be given below with reference to the drawings and specific embodiments.

[0020] With reference to Figures 1-3 The present application provides a kind of medical food moisture content nondestructive testing device, comprising: Outer box 1, the bottom of outer box 1 is equipped with support assembly and moving assembly; Sample moisture content detection mechanism, sample moisture content detection mechanism includes drying oven 2, drying system and condensing system, drying oven 2 is provided with several groups, several through openings are vertically and equidistantly opened in the front side of outer box 1, several drying ovens 2 are fixed in through opening respectively, the front side of drying oven 2 is hinged with door 3, automatic opening and closing assembly is installed on outer box 1, and automatic opening and closing assembly is hinged with door 3, drying system and condensing system are all installed in outer box 1, and are communicated with drying oven 2; Weighing mechanism, weighing mechanism is installed in the front side of outer box 1; Temperature and humidity monitoring module, temperature and humidity monitoring module is installed in drying oven 2; Image recognition module, image recognition module is installed in drying oven 2 and weighing mechanism respectively; Wherein, image recognition unit, temperature and humidity monitoring module are connected with terminal system.

[0021] Further optimization scheme, drying system includes: Hot air machine 4, hot air machine 4 is installed in outer box 1, and the front side position in drying oven 2 is fixed with net frame, and the interval between net frame and rear side of drying oven 2 is provided, and hot air machine 4 is communicated with interval through air pipe; Wind wheel 5, wind wheel 5 is rotatably connected on the side wall of drying oven 2; Motor 6, motor 6 is fixed in outer box 1, and motor 6 is shaft-connected between wind wheel 5.

[0022] Hot air delivery: hot air machine 4 generates hot air according to terminal preset temperature (40-60 DEG C), and the hot air is accurately delivered to the interval region between net frame and rear side in drying oven 2 through air pipe, the net frame is sample bearing carrier, and the interval design between net frame and rear side of drying oven 2 forms "hot air buffer zone", to avoid that hot air machine 4 directly blows sample to cause local water loss, agglomeration; Flow field circulation: motor 6 drives wind wheel 5 to rotate along the side wall of drying oven 2, scatters hot air in buffer zone and forms annular circulation flow field, so that hot air uniformly covers complete sample on net frame (no dead angle), ensures that the moisture content of sample in each region is reduced synchronously, and simultaneously avoids that high-temperature airflow directly contacts sample to cause oxidation of nutrient components (such as protein, vitamin); Temperature closed loop: The temperature and humidity monitoring module (temperature sensor) collects the circulating hot air temperature in real time. If it exceeds the ±2℃ fluctuation range, the terminal system immediately adjusts the power of the hot air blower 4 (such as increasing the power when cooling down, and reducing the power when heating up) to maintain a stable drying environment, meeting the non-destructive requirements of low-temperature slow drying of medical food.

[0023] Further optimization scheme, the condensing system comprises: A condenser 7 is connected between the drying box 2 and the condenser 7 through a pipeline 15, and an air pump is installed on the pipeline 15, An electronic scale is provided with a collector, the collector is connected with the output end of the condenser 7, and the electronic scale is connected with the control.

[0024] Water vapor capture: During the drying process, the water vapor evaporated by the sample accumulates in the drying box 2. After the air pump is started, negative pressure is formed through the pipeline 15 to actively pump the water vapor in the box to the condenser 7. The condenser 7 cools by low temperature (such as 5-10℃) to condense the water vapor into liquid water, avoiding the water vapor remaining in the drying box 2 affecting the subsequent detection; Weight measurement: The condensed water flows into a special collector (material can be selected as food grade PP to avoid pollution) along the output end of the condenser 7. The collector is placed on the electronic scale, and the electronic scale is in real-time communication with the control end. The weight change (i.e. the increase of condensed water) of the collector is recorded every 10 seconds. The data is directly transmitted to the terminal system, replacing the error link of traditional "manual weighing of condensed water"; Data association: The terminal system links the "real-time weight of condensed water" collected by the electronic scale with the "sample weight change" collected by the weighing mechanism (electronic scale II 11), accurately calculates the result through the moisture content formula, and solves the problem of "easy to miss attached water vapor" in traditional single sample weight loss calculation.

[0025] Further optimization scheme, the automatic opening and closing assembly comprises an electric control telescopic rod 8, one end of the electric control telescopic rod 8 is hinged to the side wall of the outer box body 1, the other end is rotatably connected with a pull rod 9, the pull rod 9 and the electric control telescopic rod 8 are vertically arranged, the side wall of the box door 3 is fixedly connected with a bearing seat 12, and the pull rod 9 is rotatably connected with the bearing seat 12.

[0026] Motion transmission: One end of the electric control telescopic rod 8 is hinged to the side wall of the outer box body 1 (fixed fulcrum), the other end is connected with the pull rod 9 through the rotating shaft (vertically arranged), and the other end of the pull rod 9 is rotatably connected with the bearing seat 12 of the side wall of the box door 3. When the terminal instruction "close the door", the electric control telescopic rod 8 is retracted, pulling the pull rod 9 to rotate clockwise around the bearing seat 12, driving the box door 3 to rotate to the side of the drying box 2, until the box door 3 is attached to the edge of the drying box 2, and vice versa.

[0027] Further optimization scheme, the weighing mechanism comprises: A weighing box 10 is provided with a mounting port on the front side of the outer box body 1, and the weighing box 10 is fixed in the mounting port; Electronic scale II 111, the electronic scale II 111 is installed in the weighing box 10.

[0028] Weighing protection: the weighing box 10 is fixed in the mounting port of the front side of the outer box body 1, forming a closed space, and the electronic scale II 111 is placed in the box, which can isolate the influence of external airflow (such as the wind generated by the movement of personnel), dust and water stains on the electronic scale II 111, and solve the weight drift problem caused by environmental interference in the traditional "open weighing"; Weight collection: in the detection preparation stage, the operator places the special bearing tray (material can be selected as stainless steel, easy to disinfect) containing medical food on the electronic scale II 111, and the electronic scale II 111 immediately collects the initial weight of the "tray + sample" and uploads it to the terminal; after drying, the bearing tray is transferred to the weighing box 10 together with the sample, and the electronic scale II 111 collects the weight of the "dried tray + sample", and the difference between the two weights is the water loss of the sample, which is calculated together with the weight of the condensed water to calculate the moisture content.

[0029] Further optimization scheme, the temperature and humidity monitoring module includes a temperature sensor and a humidity sensor, and the temperature sensor and the humidity sensor are respectively installed in the drying box 2.

[0030] Further optimization scheme, the image recognition module includes: Multi-dimensional camera, the multi-dimensional camera is respectively installed in the weighing box 10 and the drying box 2, and the drying box 2 is provided with a heat shield, and the multi-dimensional camera located in the drying box 2 is arranged in the heat shield; Supplementary light, the supplementary light is respectively installed in the drying box 2 and the weighing box 10.

[0031] High-definition imaging: multi-dimensional cameras (such as 2 million pixel industrial cameras) are respectively installed in the drying box 2 and the weighing box 10, the camera in the drying box 2 is used for shooting the morphological changes (such as whether to form a block, to form a layer, and to change color) of the sample during drying, and the camera in the weighing box 10 is used for confirming the placement state (such as whether to be centered and whether the tray is stable) of the sample to avoid weighing deviation; High temperature protection: the camera in the drying box 2 is placed in the heat shield (the material can be selected as ceramic fiber, and the temperature resistance is above 80℃), so as to avoid the aging and damage of the camera lens and circuit caused by the temperature of 40-60℃ in the drying box 2; Light compensation: supplementary lights (such as LED cold light sources, avoiding the influence of heat on the environment temperature) are respectively installed in the two box bodies, when the ambient light is insufficient (such as the light in the drying box 2 is dim), the terminal automatically turns on the supplementary light, so as to ensure that the image shot by the camera is clear, and the subtle morphological changes (such as the layering boundary of semi-liquid food) of the sample can be accurately identified.

[0032] Further optimization scheme, the support assembly includes: Supporting screw 13, the supporting screw 13 is perpendicularly screwed to the bottom of the outer box body 1; The base 14 is fixedly connected at the bottom of the support screw 13.

[0033] A non-destructive testing method for the water content of medical food includes the following steps: Step one, first check the device state, confirm that the bottom support assembly of the outer box body 1 is stable, the moving assembly is locked, avoid the device displacement during detection, at the same time, start the terminal system, check whether the temperature and humidity monitoring module and the image recognition module are normally connected, ensure smooth data transmission, then collect the test sample of the food to be detected before the patient eats, each sample needs to ensure uniformity, provide accurate basis for subsequent water content detection; Step two, put the collected quantitative test sample into several drying boxes 2 in the access of the outer box body 1, after closing the box door 3, lock the box door 3 through the automatic opening and closing assembly on the outer box body 1, ensure the sealing of the drying box 2, then start the drying system and the condensing system in the outer box body 1, make the drying box 2 enter the working state, the temperature and humidity monitoring module monitors the temperature and humidity data in the drying box 2 in real time, and synchronously transmits to the terminal system, and records the drying environment parameters in real time; Step three, put the food to be eaten by the patient into the weighing mechanism on the front side of the outer box body 1 in turn, the weighing mechanism automatically obtains the weight of the food and uploads it to the terminal system, at the same time, the image recognition module installed in the drying box 2 and the weighing mechanism respectively identifies the sample in the drying box 2 and the food to be eaten in the weighing mechanism, accurately transmits the food type information to the terminal system, and establishes the corresponding relationship between the sample and the food to be eaten; Step four, the terminal system automatically retrieves the water content data of the corresponding test sample after drying and condensing analysis according to the food type feedback by the image recognition module, combines the weight of the food to be eaten obtained by the weighing mechanism, calculates according to the formula "water content of food to be eaten = food weight x corresponding sample water content", and finally outputs the calculated water content of the food to be eaten on the terminal system, completes the whole non-destructive testing process.

[0034] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0035] The above described embodiments are only to illustrate the preferred modes of the present application, and are not intended to limit the scope of the present application. Any modification and improvement made by those skilled in the art to the technical solutions of the present application without departing from the design spirit of the present application shall fall within the protection scope of the present application as defined by the claims.

Claims

1. A medical food moisture non-destructive testing apparatus, characterized by, Include: The bottom of the outer box body (1) is provided with a support assembly and a moving assembly; The sample moisture content detection mechanism includes a drying oven (2), a drying system and a condensation system, the drying oven (2) is provided with a plurality of groups, a plurality of through openings are vertically and equidistantly formed on the front side of the outer box body (1), a plurality of drying ovens (2) are respectively fixed in the through openings, a box door (3) is hinged to the front side of the drying oven (2), an automatic opening and closing assembly is installed on the outer box body (1), the automatic opening and closing assembly is hinged to the box door (3), the drying system and the condensation system are both installed in the outer box body (1) and communicate with the drying oven (2); The weighing mechanism is installed on the front side of the outer box body (1); The temperature and humidity monitoring module is installed in the drying oven (2); The image recognition module is respectively installed in the drying oven (2) and the weighing mechanism; The image recognition unit and the temperature and humidity monitoring module are connected with the terminal system.

2. The apparatus for non-destructive testing of moisture content of medical foods according to claim 1, wherein The drying system includes: A hot air machine (4) is installed in the outer box body (1), a mesh frame is fixed at the front side position in the drying oven (2), a gap is provided between the mesh frame and the rear side of the drying oven (2), and the hot air machine (4) communicates with the gap through a wind pipe; A wind wheel (5) is rotatably connected to the side wall of the drying oven (2); A motor (6) is fixed in the outer box body (1), and the motor (6) is shaft-connected with the wind wheel (5).

3. The apparatus for non-destructive testing of moisture content of medical foods according to claim 1, wherein The condensation system includes: A condenser (7) is connected between the drying oven (2) through a pipeline (15), an air pump is installed on the pipeline (15), An electronic scale is provided with a collector, the collector is connected with the output end of the condenser (7), and the electronic scale is connected with the control.

4. The apparatus for non-destructive testing of moisture content of medical foods according to claim 1, wherein The automatic opening and closing assembly includes an electric control telescopic rod (8), one end of the electric control telescopic rod (8) is hinged to the side wall of the outer box body (1), the other end is rotatably connected with a pull rod (9), the pull rod (9) and the electric control telescopic rod (8) are vertically arranged, the side wall of the box door (3) is fixedly connected with a bearing seat (12), and the pull rod (9) is rotatably connected to the bearing seat (12).

5. The apparatus for non-destructive testing of moisture content of medical foods according to claim 1, wherein The weighing mechanism includes: A weighing box (10) is fixed in the mounting port of the front side of the outer box body (1); An electronic scale II (11) is installed in the weighing box (10).

6. The apparatus for non-destructive testing of moisture content of medical foods according to claim 1, wherein The temperature and humidity monitoring module includes a temperature sensor and a humidity sensor, the temperature sensor and the humidity sensor are respectively installed in the drying oven (2).

7. The apparatus for non-destructive testing of moisture content of a medical food according to claim 5, wherein The image recognition module includes: Multi-dimensional cameras are respectively installed in the weighing box (10) and the drying box (2), a heat shield is installed in the drying box (2), and the multi-dimensional camera in the drying box (2) is arranged in the heat shield; Light supplement lamps are respectively installed in the drying box (2) and the weighing box (10).

8. The apparatus for non-destructive testing of moisture content of medical foods according to claim 1, wherein The support assembly comprises: A support screw (13) is vertically screwed to the bottom of the outer box body (1); A base (14) is fixedly connected to the bottom of the support screw (13).

9. A method for non-destructive testing of the water content of a medical food based on the device for non-destructive testing of the water content of a medical food according to any one of claims 1 to 8, characterized in that The method comprises the following steps: Step one, first check the device state, confirm the stability of the support assembly at the bottom of the outer box body (1), lock the moving assembly to avoid displacement of the device during detection, start the terminal system, check whether the temperature and humidity monitoring module and the image recognition module are normally connected, ensure smooth data transmission, then collect test samples of the food to be detected according to the same quantitative standard before the patient eats, and ensure that each sample has uniform properties to provide an accurate basis for subsequent moisture content detection; Step two, place the collected quantitative test samples into several drying boxes (2) in the outer box body (1), close the box door (3), lock the box door (3) through the automatic opening and closing assembly on the outer box body (1) to ensure that the drying box (2) is sealed, then start the drying system and the condensing system in the outer box body (1) to make the drying box (2) enter the working state, the temperature and humidity monitoring module monitors the temperature and humidity data in the drying box (2) in real time and synchronously transmits them to the terminal system to record the drying environment parameters in real time; Step three, place the food to be eaten by the patient into the weighing mechanism on the front side of the outer box body (1) in sequence, the weighing mechanism automatically obtains the weight of the food and uploads it to the terminal system, at the same time, the image recognition modules installed in the drying box (2) and the weighing mechanism respectively identify the types of the samples in the drying box (2) and the food to be eaten in the weighing mechanism, accurately transmit the food type information to the terminal system, and establish the corresponding relationship between the samples and the food to be eaten; Step four, the terminal system automatically retrieves the moisture content data of the corresponding test samples after drying and condensing analysis according to the food type feedback by the image recognition module, combines the weight of the food to be eaten obtained by the weighing mechanism, calculates the moisture content of the food to be eaten according to the formula "moisture content of food to be eaten = weight of food × moisture content of corresponding sample", and finally outputs the calculated moisture content of the food to be eaten on the terminal system, completing the entire non-destructive detection process.