A modular smart nursing mattress system integrated with dual-effect visual degradable temperature indicating film and a collaborative control method thereof

Abstract

This invention discloses a modular intelligent nursing mattress system integrating a dual-effect visual biodegradable temperature indicator film and its collaborative control method. The invention relates to the field of intelligent medical device technology, and includes a main control unit and at least one independently pluggable functional module compartment. The functional module compartment includes: a shell with a contact interface for acting on the human body surface; an external treatment actuator disposed within the shell for applying heat or cold therapy to the area corresponding to the contact interface; and a multi-mode sensor group disposed within the shell for collecting the operating parameters or environmental parameters of the functional module compartment. This solution achieves direct and visual temperature status feedback, enabling users and caregivers to intuitively and without delay perceive the thermal state of the treatment area, significantly improving safety and user-friendliness of the human-computer interaction.

Description

Technical Field

[0001] This invention relates to the field of intelligent medical device technology, specifically to a modular intelligent nursing mattress system integrating a dual-effect visual biodegradable temperature indicator film and its collaborative control method. Background Technology

[0002] In the fields of smart healthcare and personalized health management, intelligent nursing devices integrating physical therapy are developing rapidly. Traditional Chinese medicine external therapies, such as hot compresses (warming), cold compresses (cold-coagulation), and moxibustion, rely on precise control of the "quantity" and "timing" of the treatment temperature for their effectiveness. However, existing technologies have significant shortcomings in terms of the directness of state perception, the real-time nature of feedback, and the intelligent collaboration of multiple modules. Sensing Layer: Lagging Feedback and Lack of Interaction. Existing devices generally rely on embedded point temperature sensors, whose signals need to be processed by circuitry before being displayed on an external screen, resulting in thermal conduction delays and information fragmentation. Users (especially the elderly or patients with impaired senses) cannot directly, intuitively, and without delay perceive the real-time temperature and distribution of the treated body surface, which is a major cause of safety accidents such as low-temperature burns. Although there are independent temperature-sensitive patches, they are only passive indicators, cannot interact with the control system, and are mostly made of non-degradable materials, with limited functionality.

[0003] Control Layer: Lack of Open-Loop Control and Coordination. Most devices employ simple switching or PID control, aiming at a set temperature, without considering the dynamic changes in the heat capacity of the treatment area or the coordination logic between different therapies. The cold, hot, and moxibustion modules often operate independently, unable to automatically execute sequential TCM therapies such as "warming first and then cooling" based on real-time body surface conditions (e.g., temperature distribution and trends), resulting in low levels of intelligence.

[0004] Materials and Integration Layer: Poor environmental friendliness and non-standard interfaces. The contact layer often uses non-degradable materials such as PVC and PET, generating medical waste. Furthermore, the functional module interfaces are inconsistent, and there is no information link between the indicating components and the sensing and control units, resulting in poor system scalability and maintainability. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a modular intelligent nursing mattress system integrating a dual-effect visual biodegradable temperature indicator film and its collaborative control method, thus solving the technical problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a modular intelligent nursing mattress system integrating a dual-effect visual biodegradable temperature indicator film, comprising a main control unit and at least one independently pluggable functional module compartment; The functional module repository includes: The outer shell has a contact interface that acts on the surface of the human body; An external treatment actuator, disposed within the housing, is used to perform heat therapy or cold therapy on the area corresponding to the contact interface; A multi-mode sensor array, housed within the housing, is used to collect the operating parameters or environmental parameters of the functional module compartment. An optical sensing unit is disposed inside the housing, with its detection direction facing the contact interface; A dual-effect visual biodegradable temperature indicator film is used as the contact interface to cover and fix the shell. The dual-effect visual biodegradable temperature indicator film includes a low-temperature reversible color-changing unit and a high-temperature reversible color-changing unit, and its surface or interior is provided with machine-readable marking information. The main control unit is communicatively connected to the external actuator, the multi-mode sensor group, and the optical sensing unit within the functional module compartment, and is configured as follows: The optical sensing unit acquires the marking information on the dual-effect visual biodegradable temperature indicator film and the temperature data obtained based on the state analysis of the indicator film. Based on the identification information, the parsed temperature data, and the signals from the multi-mode sensor group, control commands are generated to drive the external treatment actuator to work.

[0007] Preferably, the dual-effect visual biodegradable temperature indicator film comprises: The substrate layer is formed of a biodegradable polymer blend comprising polylactic acid (PLA), polybutylene adipate / terephthalate (PBAT), and polyhydroxybutyrate valerate (PHBV). A functional layer is attached to the substrate layer, wherein the low-temperature reversible color-changing unit and the high-temperature reversible color-changing unit are dispersed, the low-temperature reversible color-changing unit comprises microencapsulated spiropyran compounds, and the high-temperature reversible color-changing unit comprises a complex of triarylmethane compounds and cholesteric liquid crystal materials.

[0008] Preferably, the dual-effect visual biodegradable temperature indicator film further includes an interface enhancement layer located between the substrate layer and the functional layer; the interface enhancement layer is an organic-inorganic hybrid layer formed by plasma treatment of the surface of the substrate layer and grafting a silane coupling agent.

[0009] Preferably, the surface of the functional layer is provided with a microstructure region formed by laser processing, the microstructure region including a periodic array of micron-sized trenches or pits for enhancing heat transfer and color response speed.

[0010] Preferably, the machine-readable identification information is a micro-dot matrix graphic code formed on the dual-effect visual biodegradable temperature indicator film by laser micromachining, which is invisible to the human eye; the identification information includes at least one or more of the type identification of the indicator film, a preset low-temperature response threshold, and a high-temperature response threshold.

[0011] Preferably, the main control unit is configured to execute the following control method: Receive a treatment mode command, the treatment mode command being associated with at least one target temperature; Using the real-time temperature of the dual-effect visual biodegradable temperature indicator film obtained by the optical sensing unit as the main feedback quantity, an adaptive control algorithm is used to calculate and adjust the output power of the external actuator so that the real-time temperature approaches the target temperature. Real-time monitoring of the color region image of the indicator film acquired by the optical sensing unit; Based on the spatial distribution characteristics or time-varying trends of the color region image, determine whether abnormal hot or cold clustering occurs. When an anomaly is detected, a safety intervention strategy is triggered, which includes reducing the output power of the external actuator or stopping its operation.

[0012] Preferably, the treatment mode instruction is a sequential therapy program based on preset treatment logic, and the sequential therapy program includes at least two treatment stages with different target temperatures. The main control unit is also configured to: when performing the current treatment stage, based on the real-time temperature obtained by the optical sensing unit, the color state of the indicator film, and the preset switching conditions, automatically determine whether the conditions for switching to the next treatment stage are met, and when the conditions are met, control the external treatment actuator to switch to the working state corresponding to the next treatment stage.

[0013] Preferably, the switching conditions include: the duration of the current treatment phase reaches a preset duration, the real-time temperature stabilizes within the target temperature range, and the color area distribution of the indicator film reaches a preset uniform and stable standard.

[0014] This invention provides a collaborative control method for the above-mentioned modular intelligent nursing mattress system, characterized by comprising the following steps: S1. Identification and Configuration Steps: When the functional module compartment is connected to the system, the optical sensing unit reads the identification information on the dual-effect visual biodegradable temperature indicator film, and automatically identifies the module type and loads the corresponding control parameters based on the identification information; S2. Multi-source information fusion step: During the treatment process, the indicator film temperature analyzed by the optical sensing unit, the sensor data collected by the multi-mode sensor group, and the indicator film color distribution information obtained by analyzing the images collected by the optical sensing unit are acquired simultaneously. S3. Intelligent control decision-making steps: Based on the multi-source information fusion data obtained in S2, combined with the preset treatment logic and safety rules, control instructions for the external treatment actuator are generated through the control algorithm. The control instructions are used to adjust its working power or switch its working mode. S4. Safety monitoring and intervention steps: During the treatment process, the dynamic changes in the color distribution information of the indicator membrane are continuously analyzed. If a diffusion trend that conforms to the preset abnormal pattern is identified, a safety intervention command is triggered to adjust or stop the operation of the external treatment actuator. Beneficial effects

[0015] This invention provides a modular intelligent nursing mattress system and its collaborative control method that integrates a dual-effect visual biodegradable temperature indicator film. By using the biodegradable film, which integrates temperature indication and digital information, as the core interactive interface and standardized module interface, this invention offers an innovative system solution for intelligent nursing devices. This solution achieves direct, visualized temperature status feedback, allowing users and caregivers to intuitively and without delay perceive the thermal state of the treatment area, significantly improving safety and user-friendliness. Simultaneously, the system utilizes optical methods to perform high-precision quantification and analysis of the film's state and deeply integrates it with the control loop, overcoming the shortcomings of traditional embedded point sensors such as feedback lag and information fragmentation, achieving more accurate and stable temperature control. By reading the encoded information embedded in the film, the system achieves plug-and-play functionality and automatic parameter matching, enhancing the system's modularity and maintainability. Furthermore, the system can analyze the dynamic trend of film color changes in real time and, based on this, provide proactive safety warnings and interventions, constructing a multi-layered protection system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the sequential therapy execution process of the present invention.

[0017] Figure 2 This is a schematic diagram of the proactive safety warning judgment logic flow of the present invention. Detailed Implementation

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

[0019] Please see Figure 1-2 The present invention provides a technical solution: a modular intelligent nursing mattress system integrating a dual-effect visual biodegradable temperature indicator film, including a main control unit and at least one independently pluggable functional module compartment; The functional module repository includes: The outer shell has a contact interface that acts on the surface of the human body; An external treatment actuator, disposed within the housing, is used to perform heat therapy or cold therapy on the area corresponding to the contact interface; A multi-mode sensor array, housed within the housing, is used to collect the operating parameters or environmental parameters of the functional module compartment. An optical sensing unit is disposed inside the housing, with its detection direction facing the contact interface; A dual-effect visual biodegradable temperature indicator film is used as the contact interface to cover and fix the shell. The dual-effect visual biodegradable temperature indicator film includes a low-temperature reversible color-changing unit and a high-temperature reversible color-changing unit, and its surface or interior is provided with machine-readable marking information. The main control unit is communicatively connected to the external actuator, the multi-mode sensor group, and the optical sensing unit within the functional module compartment, and is configured as follows: The optical sensing unit acquires the marking information on the dual-effect visual biodegradable temperature indicator film and the temperature data obtained based on the state analysis of the indicator film. Based on the identification information, the parsed temperature data, and the signals from the multi-mode sensor group, control commands are generated to drive the external treatment actuator to work.

[0020] In this embodiment, the dual-effect visual biodegradable temperature indicator film comprises: The substrate layer is formed of a biodegradable polymer blend comprising polylactic acid (PLA), polybutylene adipate / terephthalate (PBAT), and polyhydroxybutyrate valerate (PHBV). A functional layer is attached to the substrate layer, wherein the low-temperature reversible color-changing unit and the high-temperature reversible color-changing unit are dispersed, the low-temperature reversible color-changing unit comprises microencapsulated spiropyran compounds, and the high-temperature reversible color-changing unit comprises a complex of triarylmethane compounds and cholesteric liquid crystal materials.

[0021] In this embodiment, the dual-effect visual biodegradable temperature indicator film further includes an interface enhancement layer located between the substrate layer and the functional layer; the interface enhancement layer is an organic-inorganic hybrid layer formed by plasma treatment of the surface of the substrate layer and grafting a silane coupling agent.

[0022] In this embodiment, the surface of the functional layer is provided with a microstructure region formed by laser processing, the microstructure region including a periodic array of micron-sized trenches or pits for enhancing heat transfer and color response speed.

[0023] In this embodiment, the machine-readable identification information is an invisible micro-dot matrix graphic code formed on the dual-effect visual biodegradable temperature indicator film by laser micromachining; the identification information includes at least one or more of the type identification of the indicator film, a preset low-temperature response threshold, and a high-temperature response threshold.

[0024] In this embodiment, the main control unit is further configured to execute the following control method: Receive a treatment mode command, the treatment mode command being associated with at least one target temperature; Using the real-time temperature of the dual-effect visual biodegradable temperature indicator film obtained by the optical sensing unit as the main feedback quantity, an adaptive control algorithm is used to calculate and adjust the output power of the external actuator so that the real-time temperature approaches the target temperature. Real-time monitoring of the color region image of the indicator film acquired by the optical sensing unit; Based on the spatial distribution characteristics or time-varying trends of the color region image, determine whether abnormal hot or cold clustering occurs. When an anomaly is detected, a safety intervention strategy is triggered, which includes reducing the output power of the external actuator or stopping its operation.

[0025] In this embodiment, the treatment mode instruction is a sequential therapy program based on preset treatment logic, and the sequential therapy program includes at least two treatment stages with different target temperatures. The main control unit is also configured to: when performing the current treatment stage, based on the real-time temperature obtained by the optical sensing unit, the color state of the indicator film, and the preset switching conditions, automatically determine whether the conditions for switching to the next treatment stage are met, and when the conditions are met, control the external treatment actuator to switch to the working state corresponding to the next treatment stage.

[0026] In this embodiment, the switching conditions are further configured such that: the duration of the current treatment phase reaches a preset duration, the real-time temperature is stable within the target temperature range, and the color area distribution of the indicator film reaches a preset uniform and stable standard.

[0027] This invention provides a collaborative control method for the above-mentioned modular intelligent nursing mattress system, characterized by comprising the following steps: S1. Identification and Configuration Steps: When the functional module compartment is connected to the system, the optical sensing unit reads the identification information on the dual-effect visual biodegradable temperature indicator film, and automatically identifies the module type and loads the corresponding control parameters according to the identification information; S2. Multi-source information fusion step: During the treatment process, the indicator film temperature analyzed by the optical sensing unit, the sensor data collected by the multi-mode sensor group, and the indicator film color distribution information obtained by analyzing the images collected by the optical sensing unit are acquired simultaneously. S3. Intelligent control decision-making steps: Based on the multi-source information fusion data obtained in S2, combined with the preset treatment logic and safety rules, control instructions for the external treatment actuator are generated through the control algorithm. The control instructions are used to adjust its working power or switch its working mode. S4. Safety monitoring and intervention steps: During the treatment process, the dynamic changes in the color distribution information of the indicator membrane are continuously analyzed. If a diffusion trend that conforms to the preset abnormal pattern is identified, a safety intervention command is triggered to adjust or stop the operation of the external treatment actuator.

[0028] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0029] Example: In practice, technicians can insert one or more standardized functional module compartments as described in claim 1 (e.g., a module compartment specifically for hot compresses, a module compartment specifically for cold compresses, or a module compartment integrating a smokeless moxibustion head) into the corresponding standardized slots on the main body of the nursing mattress according to clinical needs. Once the module compartment is in place, its internal circuitry and communication interface automatically establish a connection with the main control unit. The main control unit then drives the optical sensing unit within the module compartment to operate, for example, by emitting light of a specific wavelength to illuminate the dual-effect visual biodegradable temperature indicator film it covers. The photoelectric sensor in the optical sensing unit receives the reflected light signal, and the system's built-in analytical algorithm first identifies the micro-array code formed by laser micromachining, which carries the identity information of the film, from a specific region of the reflected spectrum. Based on this code, the main control unit automatically identifies the type of the module (e.g., "high-temperature thermotherapy type") and retrieves the pre-stored corresponding control parameters, such as the preset high-temperature response threshold (e.g., 45°C) and treatment duration. After treatment is initiated, the system continuously runs a multi-source information fusion and closed-loop control process: the optical sensing unit acquires the reflection spectrum of the indicator film at a certain sampling frequency, and calculates and outputs a quantified film temperature value T_opt in real time by analyzing the reflectance ratio of characteristic bands (e.g., corresponding to red and green); simultaneously, the traditional contact temperature sensor (such as platinum resistance thermometer) and / or non-contact infrared sensor integrated in the module compartment provide redundant temperature data T_cont and T_irr, while the pressure sensor monitors the contact pressure. The core control algorithm of the main control unit uses T_opt as the main feedback quantity, compares it with the target temperature setpoint, calculates the power adjustment amount that should be applied to the external treatment actuator (such as a semiconductor heating plate) through a fuzzy PID controller, and drives the actuator through pulse width modulation (PWM) to achieve precise closed-loop regulation of the treatment area temperature. Throughout the process, the system simultaneously analyzes the image data acquired by the optical sensing unit in real time, and identifies the spatial distribution of color areas (such as the red area representing high temperature) on the indicator film and their rate of change over time through image processing algorithms. If the algorithm identifies an abnormally rapid, non-uniform diffusion pattern of the red area from the center outwards, combined with an abnormal increase in T_cont or T_irr, the main control unit will determine that there is a risk of localized overheating and immediately trigger a preset safety intervention strategy, such as reducing the heating power to a safe level or pausing heating. Simultaneously, it will issue a warning to the user or caregiver via the mattress's audible and visual alarm unit. For preset sequential therapies (such as "hot compress followed by cold compress"), the main control unit will continuously monitor whether T_opt is stable within the target range, whether the preset heating time has been reached, and whether the membrane color area is uniform and stable during the first stage of heating.When these switching conditions are met simultaneously, the system will automatically issue a command to shut down the heating module and (if the module compartment integrates a cooling function) start the cooling module, or switch control to another inserted dedicated cold compress module compartment, thereby beginning the next stage of cold compress treatment. The entire process requires no manual intervention in temperature monitoring and stage switching. This embodiment demonstrates how the system, through the visualization and digital characteristics of the core functional membrane, combined with multi-sensor fusion and intelligent algorithms, achieves a complete process from automatic module identification, parameter adaptation, precise closed-loop temperature control to proactive safety protection based on visual situational awareness and automated execution of the treatment procedure. Its specific implementation relies on mature microcontroller technology, sensor technology, spectral analysis algorithms, and image processing algorithms, which are within the scope of reasonable implementation by those skilled in the art based on the concept of this patent.

[0030] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A modular intelligent nursing mattress system integrating a dual-effect visual biodegradable temperature indicator film, characterized in that, Includes a main control unit and at least one independently pluggable functional module compartment; The functional module repository includes: The outer shell has a contact interface that acts on the surface of the human body; An external treatment actuator, disposed within the housing, is used to perform heat therapy or cold therapy on the area corresponding to the contact interface; A multi-mode sensor array, housed within the housing, is used to collect the operating parameters or environmental parameters of the functional module compartment. An optical sensing unit is disposed inside the housing, with its detection direction facing the contact interface; A dual-effect visual biodegradable temperature indicator film is used as the contact interface to cover and fix the shell. The dual-effect visual biodegradable temperature indicator film includes a low-temperature reversible color-changing unit and a high-temperature reversible color-changing unit, and its surface or interior is provided with machine-readable marking information. The main control unit is communicatively connected to the external actuator, the multi-mode sensor group, and the optical sensing unit within the functional module compartment, and is configured as follows: The optical sensing unit acquires the marking information on the dual-effect visual biodegradable temperature indicator film and the temperature data obtained based on the state analysis of the indicator film. Based on the identification information, the parsed temperature data, and the signals from the multi-mode sensor group, control commands are generated to drive the external treatment actuator to work.

2. The modular intelligent nursing mattress system with an integrated dual-effect visual biodegradable temperature indicator film according to claim 1, characterized in that... The dual-effect visual biodegradable temperature indicator film includes: The substrate layer is formed of a biodegradable polymer blend comprising polylactic acid (PLA), polybutylene adipate / terephthalate (PBAT), and polyhydroxybutyrate valerate (PHBV). A functional layer is attached to the substrate layer, wherein the low-temperature reversible color-changing unit and the high-temperature reversible color-changing unit are dispersed, the low-temperature reversible color-changing unit comprises microencapsulated spiropyran compounds, and the high-temperature reversible color-changing unit comprises a complex of triarylmethane compounds and cholesteric liquid crystal materials.

3. The modular intelligent nursing mattress system with an integrated dual-effect visual biodegradable temperature indicator film according to claim 2, characterized in that... The dual-effect visual biodegradable temperature indicator film also includes an interface enhancement layer located between the substrate layer and the functional layer; the interface enhancement layer is an organic-inorganic hybrid layer formed by plasma treatment of the surface of the substrate layer and grafting a silane coupling agent.

4. A modular intelligent nursing mattress system integrating a dual-effect visual biodegradable temperature indicator film according to claim 2, characterized in that... The surface of the functional layer is provided with microstructure regions formed by laser processing, the microstructure regions including periodic micron-scale trench or pit arrays for enhancing heat transfer and color response speed.

5. A modular intelligent nursing mattress system integrating a dual-effect visual biodegradable temperature indicator film according to claim 1, characterized in that... The machine-readable identification information is a micro-dot matrix graphic encoding invisible to the human eye formed on the dual-effect visual biodegradable temperature indicator film by laser micromachining; the identification information includes at least one or more of the type identification of the indicator film, a preset low-temperature response threshold, and a high-temperature response threshold.

6. A modular intelligent nursing mattress system integrating a dual-effect visual biodegradable temperature indicator film according to claim 1, characterized in that... The main control unit is configured to execute the following control methods: Receive a treatment mode command, the treatment mode command being associated with at least one target temperature; Using the real-time temperature of the dual-effect visual biodegradable temperature indicator film obtained by the optical sensing unit as the main feedback quantity, an adaptive control algorithm is used to calculate and adjust the output power of the external actuator so that the real-time temperature approaches the target temperature. Real-time monitoring of the color region image of the indicator film acquired by the optical sensing unit; Based on the spatial distribution characteristics or time-varying trends of the color region image, determine whether abnormal hot or cold clustering occurs. When an anomaly is detected, a safety intervention strategy is triggered, which includes reducing the output power of the external actuator or stopping its operation.

7. A modular intelligent nursing mattress system integrating a dual-effect visual biodegradable temperature indicator film according to claim 6, characterized in that... The treatment mode instruction is a sequential therapy program based on preset treatment logic, and the sequential therapy program includes at least two treatment stages with different target temperatures. The main control unit is also configured to: when performing the current treatment stage, based on the real-time temperature obtained by the optical sensing unit, the color state of the indicator film, and the preset switching conditions, automatically determine whether the conditions for switching to the next treatment stage are met, and when the conditions are met, control the external treatment actuator to switch to the working state corresponding to the next treatment stage.

8. A modular intelligent nursing mattress system integrating a dual-effect visual biodegradable temperature indicator film according to claim 7, characterized in that... The switching conditions include: the duration of the current treatment phase reaches a preset duration, the real-time temperature stabilizes within the target temperature range, and the color area distribution of the indicator film reaches a preset uniform and stable standard.

9. A collaborative control method for a modular intelligent nursing mattress system as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. Identification and Configuration Steps: When the functional module compartment is connected to the system, the optical sensing unit reads the identification information on the dual-effect visual biodegradable temperature indicator film, and automatically identifies the module type and loads the corresponding control parameters according to the identification information; S2. Multi-source information fusion step: During the treatment process, the indicator film temperature analyzed by the optical sensing unit, the sensor data collected by the multi-mode sensor group, and the indicator film color distribution information obtained by analyzing the images collected by the optical sensing unit are acquired simultaneously. S3. Intelligent control decision-making steps: Based on the multi-source information fusion data obtained in S2, combined with the preset treatment logic and safety rules, control instructions for the external treatment actuator are generated through the control algorithm. The control instructions are used to adjust its working power or switch its working mode. S4. Safety monitoring and intervention steps: During the treatment process, the dynamic changes in the color distribution information of the indicator membrane are continuously analyzed. If a diffusion trend that conforms to the preset abnormal pattern is identified, a safety intervention command is triggered to adjust or stop the operation of the external treatment actuator.

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