A device and method for indoor body temperature detection
By using a parallel sensor array and multi-dimensional data processing, the problem of existing equipment being unable to accurately reflect human body temperature has been solved, achieving more accurate and stable indoor environment control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHAANXI VIVALDI INDOOR ENVIRONMENT ENGINEERING CO LTD
- Filing Date
- 2026-04-28
- Publication Date
- 2026-07-24
AI Technical Summary
Existing indoor environmental monitoring equipment cannot accurately reflect the temperature felt by the human body, is greatly affected by wind speed and heat radiation, and lacks a multivariate coupling model in data processing and logic control, resulting in lag or overcompensation in environmental regulation.
A parallel sensor array consisting of an air dry-bulb temperature sensor, a relative humidity sensor, a micro-wind speed sensor, and a black sphere radiation thermometer is used. Combined with data filtering and preprocessing, multi-dimensional perceived temperature calculation, and thermal radiation and convection compensation units, multi-dimensional data acquisition and calculation are performed to output a comprehensive indoor perceived temperature.
It achieves accurate measurement of human body temperature, reduces signal crosstalk and hardware self-heating interference, improves data accuracy and stability, avoids frequent start-stop of external devices, and extends service life.
Smart Images
Figure CN122448281A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of indoor environmental monitoring technology, specifically to a device and method for indoor body temperature detection. Background Technology
[0002] In fields such as indoor environmental control and HVAC operation, accurately acquiring indoor temperature data is a fundamental step in regulating environmental comfort. Existing indoor environmental monitoring equipment is typically equipped with only conventional air temperature and humidity sensors. It assesses the indoor environmental condition by collecting dry-bulb temperature and relative humidity data, and uses this basic data as the basis for controlling the start and stop of air conditioning or fresh air equipment.
[0003] However, traditional environmental temperature and humidity detection devices have the following shortcomings in practical applications: First, the actual perceived temperature of the human body depends not only on the air temperature and humidity, but also on the indoor wind speed and the significant influence of heat radiation from surrounding walls, cold glass, and heat-generating equipment. Existing detection equipment lacks the ability to simultaneously collect and process the data for wind speed attenuation and heat radiation deviation, resulting in detection values that cannot accurately reflect the human body's perceived temperature.
[0004] Secondly, in terms of data processing and logic control, traditional detection devices mostly output transient sensor values directly without establishing a multivariate coupled somatosensory calculation model. When encountering transient airflow disturbances caused by people moving around indoors or the activation of local hot or cold sources, sensor readings are prone to irregular jumps. Due to the lack of thermal radiation and convection compensation mechanisms and smoothing filtering algorithms tailored to spatial characteristics, the control signals output to external actuators are prone to deviation, resulting in lag or overcompensation in indoor environmental regulation and an inability to maintain stable somatosensory comfort.
[0005] Therefore, it is necessary to provide a new device and method for indoor body temperature detection to solve the above-mentioned technical problems. Summary of the Invention
[0006] The problem to be solved In view of the problems existing in the prior art, the purpose of the present invention is to provide an indoor body temperature detection device and method to solve the problems mentioned in the background art. Technical solution
[0007] To achieve the above objectives, the present invention provides the following technical solution: An indoor body temperature detection device includes a sensing and acquisition module, a central processing module, and a terminal module. The sensing and acquisition module includes an air dry-bulb temperature sensor, a relative humidity sensor, a micro-wind speed sensor, and a black sphere radiation thermometer. The central processing module includes a data filtering and preprocessing unit, a multi-dimensional body temperature calculation unit, and a thermal radiation and convection compensation unit. The output terminals of the air dry-bulb temperature sensor, the relative humidity sensor, the micro-wind speed sensor, and the black sphere radiation thermometer are electrically connected to the input terminal of the data filtering and preprocessing unit. The output terminal of the data filtering and preprocessing unit is electrically connected to the input terminal of the multi-dimensional body temperature calculation unit, and the output terminal of the multi-dimensional body temperature calculation unit is electrically connected to the input terminal of the thermal radiation and convection compensation unit. The terminal module includes a body temperature display screen, an external device communication interface, and a deviation warning indicator. The output terminal of the thermal radiation and convection compensation unit is electrically connected to the input terminal of the body temperature display screen, the input terminal of the external device communication interface, and the control terminal of the deviation warning indicator.
[0008] As a further aspect of the present invention: the dry-bulb temperature sensor, the relative humidity sensor, the micro-wind speed sensor, and the black sphere radiation thermometer are arranged in a parallel topology with each other being independent, and the signal output pins of each sensor are respectively soldered to the data access port of the data filtering and preprocessing unit through independent signal transmission cables.
[0009] As a further embodiment of the present invention: the data filtering preprocessing unit, the multi-dimensional perceived temperature calculation unit, and the thermal radiation and convection compensation unit are integrated on the same printed circuit board. The data filtering preprocessing unit and the multi-dimensional perceived temperature calculation unit are connected through an internal data bus, and the multi-dimensional perceived temperature calculation unit and the thermal radiation and convection compensation unit are connected through an internal data bus.
[0010] As a further aspect of the present invention: the external device communication interface includes a bidirectional data transceiver terminal, the input side of the bidirectional data transceiver terminal is communicatively connected to the command output terminal of the thermal radiation and convection compensation unit, and the output side of the bidirectional data transceiver terminal is externally connected to the control node of the indoor heating and ventilation equipment.
[0011] As a further embodiment of the present invention: it also includes a mounting base and a protective housing, the protective housing covering and fixedly connected to the top surface of the mounting base; the printed circuit board is fixedly connected to the inner top surface of the mounting base by bolts; the probe ends of the air dry bulb temperature sensor, the relative humidity sensor and the micro wind speed sensor pass through the side wall of the protective housing and extend to the outside of the protective housing; the body temperature display screen is embedded in the front outer wall of the protective housing.
[0012] An indoor perceived temperature detection method includes simultaneously collecting basic physical parameters such as indoor dry-bulb temperature, relative humidity, wind speed, and radiant temperature; performing anomaly removal and smoothing filtering preprocessing on the collected basic physical parameters; importing the preprocessed data into a preset multivariate perceived temperature calculation model to output the initial perceived temperature; and performing a thermal radiation and convection compensation calibration procedure in combination with indoor space characteristics to output the final comprehensive indoor perceived temperature data.
[0013] As a further aspect of the present invention: after outputting the final comprehensive indoor perceived temperature data, the method further includes comparing the final perceived temperature with a preset comfort range; if the final perceived temperature deviates from the preset comfort range, an intervention control command is sent to the external HVAC equipment through the external device communication interface, and the deviation warning indicator is triggered; if the final perceived temperature is within the preset comfort range, the current environmental state parameters are maintained, and the next detection cycle begins.
[0014] As a further aspect of the present invention: the thermal radiation and convection compensation calibration procedure combined with indoor space characteristics includes retrieving historical comfort baseline data and the initial perceived temperature value; calculating the wind-cooling attenuation coefficient of micro-wind speed on heat dissipation from the body surface based on the wind speed data; and comparing the dry-bulb temperature data with the radiant temperature data to calculate the thermal radiation deviation.
[0015] As a further aspect of the present invention: the thermal radiation and convection compensation calibration procedure combined with indoor space characteristics further includes extracting the location coordinate parameters of indoor cold and heat sources, establishing a spatial convection compensation weight matrix; substituting the wind-cooling attenuation coefficient and the thermal radiation deviation into a preset compensation equation, and performing a weighted fusion operation in combination with the spatial convection compensation weight matrix.
[0016] As a further aspect of the present invention: after performing the weighted fusion operation, the output value of the weighted fusion operation is used as an input parameter to be substituted into the dynamic smoothing algorithm model to filter out the temperature jump amplitude caused by transient airflow variables and output the calibrated comprehensive perceived temperature.
[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention overcomes the shortcomings of traditional devices that rely solely on single temperature and humidity values, resulting in a disconnect between the detected values and the actual thermal perception of the human body. The invention also employs a physical isolation structure with independent signal transmission cables welded together to avoid channel crosstalk during concurrent transmission of multiple signals, thus ensuring the signal integrity of the underlying raw physical data.
[0018] This invention employs a physical assembly method where the sensor probe penetrates the sidewall of the protective housing and extends to the outside. This allows the sensitive element to be directly placed in the indoor flow field to be measured, effectively isolating the local microclimate temperature rise deviation caused by the heat generated by the printed circuit board and processing unit components inside the protective housing. It also eliminates the thermal conduction interference of hardware self-heating on the sensor, ensuring the objectivity and accuracy of physical parameter acquisition.
[0019] This invention introduces a wind-cooling attenuation coefficient and a thermal radiation deviation into the data processing logic, and establishes a spatial convection compensation weight matrix by combining the extracted coordinates of the cold and heat sources, performing a weighted fusion calculation on the initial perceived temperature. This processing mechanism transforms the single-dimensional temperature scalar into a field variable that includes spatial convection and radiation characteristics, enabling the final calculated detection value to truly match the human body's thermodynamic perception mechanism under a non-uniform radiation field.
[0020] This invention employs front-end anomaly removal and smoothing filtering preprocessing, combined with a back-end dynamic smoothing algorithm model, to doubly filter out high-frequency noise and numerical jumps caused by indoor electromagnetic pulse interference or transient airflow changes. Combined with stable control commands output from bidirectional data transceiver terminals, it avoids frequent start-ups and shutdowns of external HVAC equipment due to receiving drastically fluctuating signals. While accurately intervening in the indoor thermal state, it effectively extends the service life of external mechanical actuators. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the modular structure of an indoor body temperature detection device; Figure 2 This is a schematic diagram of the main steps of an indoor body temperature detection method. Figure 3 This is a schematic diagram of a sub-process of the thermal radiation and convection compensation calibration procedure in an indoor body temperature detection method. Detailed Implementation
[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
[0023] See attached document Figure 1 To be continued Figure 3 This embodiment provides an indoor perceived temperature detection device, including a sensor acquisition module, a central processing module, and a terminal module. The sensor acquisition module includes an air dry-bulb temperature sensor, a relative humidity sensor, a micro-wind speed sensor, and a black sphere radiation thermometer. The central processing module includes a data filtering and preprocessing unit, a multi-dimensional perceived temperature calculation unit, and a thermal radiation and convection compensation unit. The terminal module includes a perceived temperature display screen, an external device communication interface, and a deviation warning indicator.
[0024] In terms of hardware topology and connections, the output terminals of the dry-bulb temperature sensor, the relative humidity sensor, the micro-wind speed sensor, and the black sphere radiation thermometer are electrically connected to the input terminal of the data filtering and preprocessing unit. The dry-bulb temperature sensor, the relative humidity sensor, the micro-wind speed sensor, and the black sphere radiation thermometer form an independent parallel topology, and the signal output pins of each sensor are respectively soldered to the data access port of the data filtering and preprocessing unit via independent signal transmission cables.
[0025] It should be noted that, compared to traditional detection structures that only acquire dry-bulb temperature, this embodiment introduces micro-wind speed and black-bulb radiation measurement nodes in a physical parallel configuration, forming a multi-dimensional physical quantity sensing array. Each sensor employs a physical isolation method with independent cables welded together, which avoids channel crosstalk during concurrent transmission of multiple analog or digital signals, maintaining the signal integrity of the underlying original physical data.
[0026] In terms of mechanical assembly structure, the device further includes a mounting base and a protective housing, the protective housing being fitted and fixedly connected to the top surface of the mounting base. The data filtering preprocessing unit, the multi-dimensional body temperature calculation unit, and the thermal radiation and convection compensation unit are integrated on the same printed circuit board, and the units are connected via an internal data bus. The printed circuit board is fixedly connected to the inner top surface of the mounting base by bolts. The probes of the dry-bulb temperature sensor, the relative humidity sensor, and the micro-wind speed sensor penetrate the sidewall of the protective housing and extend to the outside of the protective housing. The body temperature display screen is embedded in the front outer wall of the protective housing.
[0027] It should be noted that integrating the processing architecture onto the same printed circuit board and interacting via a data bus can shorten the physical transmission path length of data packets. The design of extending the sensor probe to the outside of the protective housing allows the sensitive element to be directly within the indoor flow field being measured, avoiding localized microclimate temperature rise deviations caused by heat generation from components on the circuit board inside the protective housing, thus ensuring the objectivity of physical parameter acquisition.
[0028] In terms of signal flow and control output logic, the output of the data filtering preprocessing unit is electrically connected to the input of the multi-dimensional body temperature calculation unit; the output of the multi-dimensional body temperature calculation unit is electrically connected to the input of the thermal radiation and convection compensation unit; the output of the thermal radiation and convection compensation unit is electrically connected to the input of the body temperature display screen, the input of the external device communication interface, and the control terminal of the deviation warning indicator, respectively. The external device communication interface includes a bidirectional data transceiver terminal. The input side of the bidirectional data transceiver terminal is communicatively connected to the command output of the thermal radiation and convection compensation unit, and the output side of the bidirectional data transceiver terminal is externally connected to the control node of the indoor HVAC equipment.
[0029] It should be noted that the bidirectional data transceiver terminal configuration provides this device with a bottom-up data reporting channel and a top-down command sending channel. This allows the compensated motion sensing data parameters to be directly integrated into the underlying operating logic of the external HVAC system, achieving closed-loop environmental status intervention.
[0030] This embodiment also provides an indoor body temperature detection method based on the above-mentioned device, the operation steps of which include: synchronously collecting basic physical parameters such as indoor dry bulb temperature, relative humidity, wind speed and radiation temperature; and performing anomaly removal and smoothing filtering preprocessing on the collected basic physical parameters.
[0031] It should be noted that under actual indoor operating conditions, electromagnetic pulses or sudden changes in localized airflow can cause extreme noise in the sensor output. The execution of anomaly removal and smoothing filtering preprocessing procedures can filter out high-frequency electrical signal noise caused by non-fundamental environmental changes, providing a stable basic data sequence for subsequent model calculations.
[0032] After acquiring the preprocessed data, the preprocessed data is imported into a preset multivariate somatosensory calculation model to output the initial somatosensory temperature. Subsequently, a thermal radiation and convection compensation calibration procedure is performed in conjunction with indoor space characteristics. The specific compensation calibration calculation process includes: retrieving historical comfort baseline data and the initial somatosensory temperature value; calculating the wind-cooling attenuation coefficient of micro-wind speed on heat dissipation from the body surface based on the wind speed data; comparing the dry-bulb temperature data and the radiant temperature data to calculate the thermal radiation deviation. Further, the location coordinate parameters of indoor cold and heat sources are extracted to establish a spatial convection compensation weight matrix; the wind-cooling attenuation coefficient and the thermal radiation deviation are substituted into a preset compensation equation, and a weighted fusion operation is performed in conjunction with the spatial convection compensation weight matrix.
[0033] It should be noted that the initial perceived temperature is often based on the assumption of an ideal, uniform temperature environment, failing to reflect the non-uniform radiation field formed by the indoor building envelope (such as single-pane cold windows or large heating screens). This method introduces the wind-cooling attenuation coefficient and the thermal radiation deviation, and combines them with the coordinate matrix of the cold and heat sources to transform the simple temperature scalar into a field variable that incorporates spatial characteristics, making the final calculated value more consistent with the actual thermodynamic sensation mechanism of the human body.
[0034] After completing the weighted fusion calculation, the output value of the weighted fusion calculation is used as the input parameter into the dynamic smoothing algorithm model to filter out temperature jumps caused by transient airflow variables, and output the calibrated comprehensive perceived temperature. Finally, the final perceived temperature is compared with the preset comfort range: if the final perceived temperature deviates from the preset comfort range, an intervention control command is sent to the external HVAC equipment through the external device communication interface, and the deviation warning indicator is triggered; if the final perceived temperature is within the preset comfort range, the current environmental state parameters are maintained, and the next detection cycle begins.
[0035] It should be noted that the movement of people indoors or the opening and closing of doors and windows can cause a surge in local transient micro-wind speeds, resulting in a jump in the calculated perceived temperature. Introducing a dynamic smoothing algorithm model can smooth out such non-steady-state disturbance curves, preventing external HVAC equipment from frequently starting and stopping due to receiving drastically fluctuating control commands, and maintaining the stable operation of mechanical actuators.
[0036] Working principle: In actual operation, the device and method of this invention first acquire multi-dimensional basic physical parameters of the indoor environment under test through a parallel sensor array consisting of an air dry-bulb temperature sensor, a relative humidity sensor, a micro-wind speed sensor, and a black sphere radiation thermometer. The acquired underlying physical electrical signals are transmitted to a data filtering and preprocessing unit, where they are converted into a stable data sequence after anomaly removal and smoothing filtering. Subsequently, the data is imported into a multi-dimensional perceived temperature calculation unit to calculate the initial perceived temperature.
[0037] After obtaining the initial perceived temperature, the system enters the thermal radiation and convection compensation calibration process: the thermal radiation and convection compensation unit extracts the wind-cooling attenuation coefficient based on micro-wind speed parameters and simultaneously compares the dry-bulb temperature and the black-bulb radiation temperature to calculate the thermal radiation deviation; based on this, combined with the spatial convection compensation weight matrix established by the indoor cold and heat source coordinates, a weighted fusion calculation is performed on the initial perceived temperature. This fusion calculation process transforms the single-dimensional air temperature scalar into a field variable that includes spatial convection and radiation characteristics.
[0038] The final calculation results are then processed again by a dynamic smoothing model to filter out numerical jumps caused by transient airflow disturbances, generating steady-state comprehensive indoor perceived temperature data. This data is transmitted to a perceived temperature display screen for terminal presentation; simultaneously, it is logically compared with a preset comfort range via a two-way data transceiver terminal. When the current environment is determined to deviate from the comfort baseline, the device directly sends an intervention command to the underlying control node of the external HVAC equipment and simultaneously triggers a deviation warning indicator, thereby completing the closed-loop detection and automatic calibration of the indoor environmental thermal state.
[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A device for indoor body temperature detection, characterized in that, include: The sensing and acquisition module includes an air dry-bulb temperature sensor, a relative humidity sensor, a micro-wind speed sensor, and a black sphere radiation thermometer. The central processing module includes a data filtering and preprocessing unit, a multi-dimensional perceived temperature calculation unit, and a thermal radiation and convection compensation unit. The output terminals of the dry-bulb temperature sensor, the relative humidity sensor, the micro-wind speed sensor, and the black sphere radiation thermometer are electrically connected to the input terminal of the data filtering and preprocessing unit. The output terminal of the data filtering and preprocessing unit is electrically connected to the input terminal of the multi-dimensional perceived temperature calculation unit, and the output terminal of the multi-dimensional perceived temperature calculation unit is electrically connected to the input terminal of the thermal radiation and convection compensation unit. The terminal module includes a motion-sensing numerical display screen, an external device communication interface, and a deviation warning indicator. The output terminal of the thermal radiation and convection compensation unit is electrically connected to the input terminal of the motion-sensing numerical display screen, the input terminal of the external device communication interface, and the control terminal of the deviation warning indicator, respectively.
2. The indoor body temperature detection device according to claim 1, characterized in that, The dry-bulb temperature sensor, the relative humidity sensor, the micro-wind speed sensor, and the black sphere radiation thermometer are arranged in an independent parallel topology, and the signal output pins of each sensor are respectively soldered to the data access port of the data filtering and preprocessing unit through independent signal transmission cables.
3. The indoor body temperature detection device according to claim 1, characterized in that, The data filtering preprocessing unit, the multi-dimensional perceived temperature calculation unit, and the thermal radiation and convection compensation unit are integrated on the same printed circuit board. The data filtering preprocessing unit and the multi-dimensional perceived temperature calculation unit are connected through an internal data bus, and the multi-dimensional perceived temperature calculation unit and the thermal radiation and convection compensation unit are also connected through an internal data bus.
4. The indoor body temperature detection device according to claim 1, characterized in that, The external device communication interface includes a bidirectional data transceiver terminal. The input side of the bidirectional data transceiver terminal is communicatively connected to the command output terminal of the thermal radiation and convection compensation unit, and the output side of the bidirectional data transceiver terminal is externally connected to the control node of the indoor HVAC equipment.
5. The indoor body temperature detection device according to claim 1, characterized in that, It also includes a mounting base and a protective housing, the protective housing covering and fixedly connected to the top surface of the mounting base; the printed circuit board is fixedly connected to the inner top surface of the mounting base by bolts; the probe ends of the air dry bulb temperature sensor, the relative humidity sensor and the micro wind speed sensor pass through the side wall of the protective housing and extend to the outside of the protective housing; the somatosensory numerical display screen is embedded in the front outer wall of the protective housing.
6. The indoor body temperature detection method according to claims 1-5, characterized in that, include: Simultaneously collect basic physical parameters such as indoor dry bulb temperature, relative humidity, wind speed, and radiant temperature; The collected basic physical parameters are preprocessed by anomaly removal and smoothing filtering. The preprocessed data is imported into a preset multivariate somatosensory calculation model, and the initial somatosensory temperature is output. The thermal radiation and convection compensation calibration procedure is performed based on the characteristics of the indoor space, and the final comprehensive indoor perceived temperature data is output.
7. The method for indoor body temperature detection according to claim 6, characterized in that, After outputting the final comprehensive indoor perceived temperature data, the system also compares the final perceived temperature with a preset comfort range. If the final perceived temperature deviates from the preset comfort range, an intervention control command is sent to the external HVAC equipment through the external device communication interface, and the deviation warning indicator is triggered. If the final perceived temperature is within the preset comfort range, the current environmental state parameters are maintained, and the system enters the next detection cycle.
8. The method for indoor body temperature detection according to claim 6, characterized in that, The thermal radiation and convection compensation calibration procedure, which combines indoor space characteristics, includes retrieving historical comfort baseline data and the initial perceived temperature value. The wind speed data is used to calculate the wind-cooling attenuation coefficient of micro-wind speed on heat dissipation from the body surface. The thermal radiation deviation is calculated by comparing the dry-bulb temperature data with the radiation temperature data.
9. The method for indoor body temperature detection according to claim 8, characterized in that, The procedure for performing thermal radiation and convection compensation calibration based on indoor space characteristics also includes extracting the location coordinate parameters of indoor cold and heat sources, establishing a spatial convection compensation weight matrix, substituting the air-cooling attenuation coefficient and the thermal radiation deviation into a preset compensation equation, and performing a weighted fusion operation based on the spatial convection compensation weight matrix.
10. The method for indoor body temperature detection according to claim 9, characterized in that, After performing the weighted fusion operation, the output value of the weighted fusion operation is used as an input parameter to be substituted into the dynamic smoothing algorithm model to filter out the temperature jump amplitude caused by transient airflow variables and output the calibrated comprehensive perceived temperature.