Dynamic anti-scald safety protector for infrared therapy

Abstract

The invention discloses a dynamic anti-scald safety protector for infrared therapy. The dynamic anti-scald safety protector comprises a shell, a clamp, a millimeter wave radar, a thermopile sensor, a buzzer, an LED lamp and a power cut-off device. The millimeter wave radar adopts a 60 GHz FMCW module, the detection angle is 120 degrees, the detection distance is 0.1-5 m, the resolution ratio is 1 cm, and the position and the moving speed of the human body are monitored in real time. The thermopile sensors cover the infrared wave band of 8-14 microns, the measurement temperature range is 0-600 DEG C, the precision is + / -0.5 DEG C, the thermopile sensors are arranged in a 4 * 4 array mode, and the temperature distribution of a treatment area is accurately measured. According to the system, a multi-modal data fusion algorithm is adopted, temperature distribution data are converted into a 16 * 16 pixel thermodynamic diagram, spatial registration is carried out on the 16 * 16 pixel thermodynamic diagram and radar point cloud data, a temperature-distance-speed three-dimensional risk assessment model is generated, and the device is installed on an infrared therapeutic apparatus through a clamp and is particularly suitable for old patients. Scald accidents caused by decline of sensing ability are effectively prevented, medical dispute risks are remarkably reduced, and reliable safety guarantee is provided for infrared therapy.

Description

Technical Field

[0001] This invention relates to the field of intelligent medical device technology, and in particular to a dynamic anti-scalding safety protector for infrared therapy. Background Technology

[0002] Infrared therapy devices play an important role in modern clinical medicine. They primarily generate a thermal effect by emitting infrared rays of specific wavelengths, promoting local blood circulation and tissue metabolism to achieve therapeutic goals such as reducing inflammation and swelling, relieving pain, and promoting wound healing. Standard treatment protocols require the device to maintain a safe distance of 30-50 cm from the patient's skin, and the treatment time to be controlled within 15-30 minutes. However, existing infrared therapy devices generally suffer from inadequate safety protection systems, lacking real-time temperature monitoring devices and effective alarm mechanisms, and are not equipped with intuitive operating status display systems. These technical deficiencies constitute potential safety risks in clinical applications.

[0003] my country's aging population trend continues to intensify, with elderly patients making up a significant proportion of treatments in orthopedics and related departments. This group often suffers from chronic diseases such as diabetes and hypertension. The physiological characteristics of elderly patients include skin degeneration and neurological decline, leading to a significant decrease in sensitivity to heat stimuli. During infrared therapy, due to their reduced perception, patients often misjudge the treatment temperature as insufficient and actively adjust the device position, shortening the treatment distance to an unsafe range, thus causing skin burns. Such medical safety incidents not only cause physical harm to patients but may also trigger medical disputes, adversely affecting the normal operation of medical institutions and doctor-patient relationships.

[0004] Currently, the safety protection technologies for infrared therapy devices on the market mainly employ traditional solutions such as fixed distance limiters or simple temperature switches. These technologies have significant limitations. Fixed distance limiters cannot adapt to individual differences among patients or the specific requirements of treatment sites, while simple temperature switches have slow response times, making it difficult to achieve real-time dynamic monitoring and rapid safety response. More importantly, existing technologies lack the ability to effectively monitor patient movement, failing to promptly activate safety protection measures when the patient moves unexpectedly or the device shifts position. Furthermore, traditional devices lack effective early warning functions, making it difficult for medical personnel to monitor the safety status during treatment in real time. These technological deficiencies seriously affect the overall safety and reliability of infrared therapy devices in clinical applications. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides an infrared therapy dynamic anti-scalding safety protector.

[0006] include:

[0007] The casing is made of high-temperature flame-retardant material and has an internal heat dissipation structure.

[0008] The clip is made of stainless steel with a high-temperature resistant coating. It is connected to the housing via a spring mechanism. The opening range of the clip is 15-60mm, and the inside is equipped with a silicone anti-slip pad.

[0009] The millimeter-wave radar uses a 60GHz FMCW radar module, with a detection angle of 120°, a detection range of 0.1-5m, and a resolution of 1cm. It is installed at the center of the front end of the housing.

[0010] The thermopile sensor covers the infrared band of 8-14μm, measures a temperature range of 0-600℃, and has an accuracy of ±0.5℃. It adopts a TO-46 metal package and has a built-in digital compensation chip, which is arranged in a 4×4 array inside the housing.

[0011] The buzzer uses a piezoelectric structure and has a sound pressure level of 85dB.

[0012] The LED light uses high-brightness red LEDs and has two working modes: flashing and constant light.

[0013] The power cut-off device uses relay control and has a response time of less than 0.5 seconds.

[0014] Data from millimeter-wave radar and thermopile sensors are processed through a fusion decision layer. When the human skin temperature is detected to be close to or above 44°C, a buzzer alarm is triggered, LED lights flash, and the power supply to the infrared therapy device is cut off via a power cut-off device.

[0015] Furthermore, the fusion decision layer uses an ARM Cortex-M4 microcontroller as the main control chip, with an operating frequency of 168MHz, 512KB Flash and 128KB RAM, and runs a multimodal data fusion algorithm.

[0016] Furthermore, the system employs a radar-triggered thermopile directional activation mechanism. When the millimeter-wave radar detects a human body entering within 1 meter, it automatically wakes up the thermopile sensor in the corresponding sector, while the other sensors remain in a dormant state.

[0017] Furthermore, the system converts the temperature distribution data from the thermopile sensor into a 16×16 pixel thermal map, spatially registers it with the point cloud data from the millimeter-wave radar, and generates a three-dimensional risk assessment model based on temperature, distance, and velocity.

[0018] Furthermore, the system uses the DBSCAN clustering algorithm to preprocess the radar point cloud data. The clustering parameters are set to a minimum number of points MinPts = 3 and a neighborhood radius ε = 0.05m to filter out false targets generated by metal reflections.

[0019] Furthermore, the system employs spatiotemporal synchronization technology, with all sensor data sampled based on a unified time reference at a sampling frequency of 100Hz and a time accuracy of 10μs.

[0020] Furthermore, the thermopile sensor signal processing uses an OTP register to configure gain Gain = 128 and oversampling rate OSR = 4096X to suppress ambient noise.

[0021] Furthermore, the system's built-in memory can record 1,000 usage data points, including treatment time, temperature change curves, and alarm counts, and the data can be exported via a USB interface.

[0022] The beneficial effects of this invention are as follows: By integrating millimeter-wave radar motion detection technology with infrared thermopile temperature sensing technology, this invention constructs a multimodal safety protection system, significantly improving the safety performance of infrared therapy equipment. This system employs a three-dimensional risk assessment model, enabling real-time monitoring of the relative position, movement speed, and local skin temperature of the patient and the treatment equipment. When a burn risk is detected, a safety protection mechanism is triggered within 0.5 seconds, including audible and visual alarms and power cut-off functions. Compared to traditional pure radar detection schemes, the false trigger rate of this invention is reduced to 1.2%, while the false trigger rate of traditional schemes is as high as 18.7%, greatly improving the reliability and practicality of the system. Simultaneously, this system is specifically optimized for the physiological characteristics of elderly patients, providing personalized safety protection for patients of different age groups through an adaptive threshold adjustment mechanism. This effectively prevents burn accidents caused by decreased patient perception and significantly reduces the risk of medical disputes.

[0023] This invention employs advanced energy-saving optimization technology and intelligent management functions, achieving an effective balance between equipment performance and energy efficiency. Through a radar-triggered thermopile directional activation mechanism, system power consumption is reduced by 60% compared to traditional solutions, extending equipment lifespan and reducing operating costs. The device features a compact design and simple installation and operation; medical personnel only need to fix the clip to the infrared therapy lamp head for immediate use, without complex debugging procedures. The system's built-in data recording and analysis functions can store data from 1000 usage sessions, providing valuable data support for clinical treatment effect evaluation and equipment maintenance management. Furthermore, this invention has good versatility and adaptability, and can be widely applied in various scenarios such as hospital rehabilitation departments, physiotherapy departments, and home health care, providing reliable technical assurance for the safe application of infrared therapy and promoting the development and progress of intelligent medical device technology. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the external structure of the protector of the present invention;

[0026] Figure 2 This is a schematic diagram of the external and internal structure of the protector of the present invention;

[0027] Figure 3 This is a schematic diagram of the overall working process of the protector system of the present invention;

[0028] Figure 4 This is a schematic diagram of the multimodal data fusion and decision-making process of the present invention.

[0029] In the diagram: 1. Housing; 2. Clip; 3. Millimeter-wave radar; 4. Thermopile sensor; 5. Buzzer; 6. LED light; 7. Power cut-off device. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more comprehensive, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0031] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0032] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0033] Example 1: Basic Structure Implementation

[0034] See Figures 1 to 2 As shown

[0035] This invention discloses a dynamic anti-scalding safety protector for infrared therapy. Its core structure comprises key components such as a housing 1, a clip 2, a millimeter-wave radar 3, a thermopile sensor 4, a buzzer 5, an LED light 6, and a power cut-off device 7. The housing 1 is made of high-temperature flame-retardant ABS material, possessing excellent heat resistance and capable of withstanding the high-temperature environment generated by the infrared therapy device. The overall dimensions of the housing 1 are 120mm × 80mm × 45mm, and its weight is approximately 180g. It features a reasonable internal heat dissipation structure to ensure the stable operation of all electronic components under high-temperature conditions.

[0036] Clip 2 features an adjustable design, made of high-strength stainless steel with a special high-temperature resistant coating, capable of withstanding temperatures above 300℃. The opening range of clip 2 is 15-60mm, compatible with the lamp head structures of most infrared therapy devices on the market. Clip 2 is connected to the housing 1 via a spring mechanism, ensuring both clamping strength and ease of installation and removal. The inner side of clip 2 has anti-slip pads made of silicone, effectively preventing the device from slipping or falling off during use.

[0037] The millimeter-wave radar 3 employs a 60GHz FMCW radar module, integrating high-precision motion detection capabilities. This radar module features a 120° detection angle and a detection distance range of 0.1-5m, achieving a resolution of 1cm, and can detect the human body's coordinates and movement speed in real time. The millimeter-wave radar 3 is mounted at the front center of the housing 1, and through a precise angle adjustment mechanism, it can be fine-tuned according to different treatment angles to ensure that the detection area completely overlaps with the irradiation area of ​​the infrared therapy device.

[0038] The thermopile sensor 4 is a high-precision model, covering the infrared band of 8-14μm, with a measurement temperature range of 0-600℃ and an accuracy of ±0.5℃. The sensor uses a TO-46 metal package and incorporates a built-in digital compensation chip, exhibiting excellent temperature stability and long-term reliability. The thermopile sensor 4 is arranged in a 4×4 array inside the housing 1, forming 16 independent temperature detection points, enabling precise measurement of the temperature distribution at different locations within the treatment area.

[0039] Example 2: Implementation of Intelligent Control System

[0040] See Figure 2 As shown

[0041] The intelligent control system of this invention adopts a three-layer architecture design, including a sensing layer, a fusion decision layer, and an execution layer. The sensing layer consists of a millimeter-wave radar 3 and a thermopile sensor 4, responsible for real-time acquisition of human motion information and temperature data. The fusion decision layer uses a high-performance ARM Cortex-M4 microcontroller as the main control chip, with an operating frequency of 168MHz and built-in 512KB Flash and 128KB RAM, enabling rapid processing of multimodal sensor data.

[0042] The fusion decision layer operates a multimodal data fusion algorithm based on Kalman filtering theory. This algorithm performs spatiotemporal synchronization processing on the human body position and velocity information detected by millimeter-wave radar 3 and the temperature data measured by thermopile sensor 4. The system sets a burn threshold of 44℃. When the detected human skin temperature approaches or exceeds this threshold, a safety protection mechanism is immediately triggered. The algorithm also integrates an adaptive anti-interference function, configuring the gain parameter Gain=128 and the oversampling rate OSR=4096X through the OTP register to effectively suppress the influence of environmental noise on temperature measurement.

[0043] The execution layer includes a buzzer 5, an LED light 6, and a power cut-off device 7. The buzzer 5 uses a piezoelectric structure with a sound pressure level of 85dB, capable of emitting a clear alarm sound. The LED light 6 uses a high-brightness red LED with both flashing and constant-on modes; in alarm mode, it flashes at a frequency of 2Hz, providing a direct visual warning. The power cut-off device 7 uses relay control, capable of immediately cutting off the power supply to the infrared therapy device upon detecting a dangerous situation, with a response time of less than 0.5 seconds.

[0044] Example 3: Implementation of Heatmap-Point Cloud Fusion Technology

[0045] See Figure 4 As shown

[0046] This invention innovatively employs a thermal map-point cloud fusion technology to convert the temperature distribution data of the thermopile sensor 4 into a 16×16 pixel thermal map, which is then spatially registered with the point cloud data of the millimeter-wave radar 3 to generate a three-dimensional risk assessment model of "temperature-distance-velocity". This technology uses a spatial coordinate transformation algorithm to map the sensor coordinate system to the device coordinate system, achieving a precise correspondence between temperature and location data.

[0047] The system employs the DBSCAN clustering algorithm to preprocess radar point cloud data, effectively filtering out false targets generated by metal reflections and improving the accuracy of human detection. Clustering parameters are set as follows: minimum number of points MinPts = 3, neighborhood radius ε = 0.05m, enabling accurate identification of human targets and elimination of environmental interference. Heatmap processing uses a bilinear interpolation algorithm to expand the temperature data from the 4×4 sensor array into a 16×16 high-resolution heatmap, providing more detailed temperature distribution information.

[0048] The three-dimensional risk model establishes a dynamic risk assessment mechanism based on the relative position of the human body and the treatment device, the speed of movement, and the local temperature. When the system detects that a human body is rapidly approaching the treatment device (speed > 0.2 m / s) and the distance is less than the safety threshold (30 cm), the early warning system is activated in advance to provide the user with sufficient reaction time.

[0049] Example 4: Implementation of Energy-Saving Optimization and Synchronization Technology

[0050] This invention implements advanced energy-saving optimization technology, employing a radar-triggered thermopile directional activation mechanism. When the millimeter-wave radar 3 detects a human body entering within 1 meter, the system automatically wakes up the corresponding thermopile sensor 4 in the relevant sector, while the remaining sensors remain in dormant, achieving a 60% reduction in power consumption. This mechanism is implemented through a sector mapping algorithm, dividing the 120° detection angle into eight 15° sectors, with each sector corresponding to two thermopile sensor units.

[0051] Spatiotemporal synchronization technology ensures precise alignment of timestamps between temperature and motion data, eliminating sensor asynchronous errors. The system employs a hardware clock synchronization scheme, with all sensor data sampled based on a unified time base at a sampling frequency of 100Hz and a time accuracy of 10μs. The data fusion algorithm utilizes a sliding window mechanism with a window size of 50ms, ensuring accurate tracking of human position changes even in fast-moving scenarios.

[0052] The system also integrates adaptive power management, dynamically adjusting sensor operating parameters based on ambient temperature and usage frequency. In standby mode, the system consumes only 0.5W, while during normal operation, it consumes 2.8W, a 45% reduction compared to traditional solutions. The power management module employs a switching power supply design, with an input voltage range of 100-240VAC and an output of 5V / 3A DC power, featuring multiple protection functions including overvoltage, overcurrent, and overtemperature protection.

[0053] Example 5: Practical Application Scenarios and Performance Verification

[0054] This invention demonstrates excellent performance in practical clinical applications. Under standard testing conditions, using a 200W electric heater to simulate an infrared therapy device, when a child's hand is 10cm away from the heating element (at a detected temperature of 62℃), the system triggers a protective mechanism within 0.5 seconds, including a buzzer alarm, LED flashing, and power cutoff. Compared to traditional pure radar detection schemes, the false trigger rate of this invention is reduced to 1.2%, while the false trigger rate of pure radar schemes is as high as 18.7%.

[0055] For elderly patients, the system is specifically optimized to address the decreased skin sensitivity in this age group. By analyzing skin temperature response characteristics of patients of different ages using machine learning algorithms, the system can automatically adjust safety thresholds based on the user's age, providing more precise protection for elderly patients. The system also supports multiple working modes, including standard mode, sensitive mode, and professional mode, to meet the needs of different user groups.

[0056] The device is easy to install; medical staff simply clip clip 2 onto the infrared therapy lamp head and press the power button to start operation. The system has a self-test function, automatically detecting the working status of each sensor after power-on to ensure normal operation. LED indicator lights display the device status through different colors and flashing patterns: solid green indicates normal operation, flashing yellow indicates a human body is detected, and rapid red flashing indicates an alarm has been triggered.

[0057] This invention also supports data recording and analysis functions. The built-in memory can record data from 1000 uses, including treatment time, temperature change curves, and alarm counts, providing data support for clinical treatment efficacy evaluation. Data can be exported to a computer via a USB interface for further analysis, helping medical staff optimize treatment plans.

[0058] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0059] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An infrared therapy dynamic anti-scalding safety protector, characterized in that, include: The shell (1) is made of high-temperature flame-retardant material and has a heat dissipation structure inside; The clip (2) is made of stainless steel and has a high temperature resistant coating. It is connected to the housing (1) through a spring mechanism. The opening range of the clip (2) is 15-60mm, and the inner side is provided with a silicone anti-slip pad. The millimeter-wave radar (3) uses a 60GHz FMCW radar module with a detection angle of 120°, a detection distance of 0.1-5m, and a resolution of 1cm. It is installed at the center of the front end of the housing (1). The thermopile sensor (4) covers the infrared band 8-14μm, measures the temperature range 0-600℃, and has an accuracy of ±0.5℃. It is packaged in TO-46 metal and has a built-in digital compensation chip. It is arranged in a 4×4 array inside the housing (1). The buzzer (5) adopts a piezoelectric structure and has a sound pressure level of 85dB. LED light (6) uses high-brightness red LED and has two working modes: flashing and constant light. The power cut-off device (7) adopts a relay control method, and the response time is less than 0.5 seconds; The data from the millimeter-wave radar (3) and the thermopile sensor (4) are processed by the fusion decision layer. When the human skin temperature is detected to be close to or above 44°C, the buzzer (5) is triggered to sound an alarm, the LED light (6) flashes, and the power supply of the infrared therapy device is cut off by the power cut-off device (7).

2. The infrared therapy dynamic anti-scalding safety protector according to claim 1, characterized in that, The fusion decision layer uses an ARM Cortex-M4 microcontroller as the main control chip, with an operating frequency of 168MHz, 512KB Flash and 128KB RAM, and runs a multimodal data fusion algorithm.

3. The infrared therapy dynamic anti-scalding safety protector according to claim 1, characterized in that, The system adopts a radar-triggered thermopile directional activation mechanism. When the millimeter-wave radar (3) detects a human body entering within a 1m range, it automatically wakes up the thermopile sensor (4) of the corresponding sector, while the other sensors remain in a dormant state.

4. The infrared therapy dynamic anti-scalding safety protector according to claim 1, characterized in that, The system converts the temperature distribution data of the thermopile sensor (4) into a 16×16 pixel thermal map, spatially registers it with the point cloud data of the millimeter-wave radar (3), and generates a three-dimensional risk assessment model of temperature-distance-velocity.

5. The infrared therapy dynamic anti-scalding safety protector according to claim 1, characterized in that, The system uses the DBSCAN clustering algorithm to preprocess radar point cloud data. The clustering parameters are set to a minimum number of points MinPts = 3 and a neighborhood radius ε = 0.05m to filter out false targets generated by metal reflections.

6. The infrared therapy dynamic anti-scalding safety protector according to claim 1, characterized in that, The system employs spatiotemporal synchronization technology, with all sensor data sampled based on a unified time reference at a sampling frequency of 100Hz and a time accuracy of 10μs.

7. The infrared therapy dynamic anti-scalding safety protector according to claim 1, characterized in that, The thermopile sensor (4) uses an OTP register to configure gain Gain = 128 and oversampling rate OSR = 4096X to suppress ambient noise.

8. The infrared therapy dynamic anti-scalding safety protector according to claim 1, characterized in that, The system's built-in memory can record 1,000 usage data, including treatment time, temperature change curves, and alarm counts, and the data can be exported via a USB interface.

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