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WO2021036073A1 - Procédé et appareil de mesure de température corporelle sans contact, thermomètre et support de stockage - Google Patents

Procédé et appareil de mesure de température corporelle sans contact, thermomètre et support de stockage Download PDF

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Publication number
WO2021036073A1
WO2021036073A1 PCT/CN2019/122752 CN2019122752W WO2021036073A1 WO 2021036073 A1 WO2021036073 A1 WO 2021036073A1 CN 2019122752 W CN2019122752 W CN 2019122752W WO 2021036073 A1 WO2021036073 A1 WO 2021036073A1
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WO
WIPO (PCT)
Prior art keywords
body temperature
target person
target
temperature
temperatures
Prior art date
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Ceased
Application number
PCT/CN2019/122752
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English (en)
Chinese (zh)
Inventor
王远城
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Meizhou Qingtang Industrial Co
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Meizhou Qingtang Industrial Co
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Publication of WO2021036073A1 publication Critical patent/WO2021036073A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0003—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiant heat transfer of samples, e.g. emittance meter
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers

Definitions

  • the present invention relates to the field of medical equipment, in particular to a method, a device, a clinical thermometer and a storage medium for non-contact body temperature measurement.
  • mercury clinical thermometers measure accurately but are fragile and unsafe; electronic thermometers use physical parameters of certain substances, such as resistance, voltage, current, etc.
  • electronic thermometers use physical parameters of certain substances, such as resistance, voltage, current, etc.
  • the body temperature is displayed in digital form. However, it is affected by multiple factors such as electronic components and battery power supply. The measurement is not accurate. It is easy to be inaccurate when the battery is low.
  • Infrared thermometers are mostly divided into contact There are two types: non-contact infrared body temperature.
  • non-contact infrared body temperature also solves the above-mentioned problems of traditional clinical thermometers, but there are still some problems.
  • the most common non-contact infrared thermometer is a forehead gun, but the existing The angle of the infrared sensor of the non-contact infrared clinical thermometer is relatively large, and the measuring distance is generally 5-10 cm. The distance is too close to measure at a long distance, and for the elderly and children, because the user is not familiar with the operation method, it may Several different body temperatures will be measured.
  • the most common non-contact infrared thermometer is a forehead thermometer, but the infrared sensor of the existing non-contact infrared thermometer has a larger angle, and the measurement distance is generally 5-10 cm. The distance is too close to measure from a long distance. For the elderly and children, since the user is not familiar with the operation method, several different body temperatures may be measured.
  • embodiments of the present invention provide a method, device, clinical thermometer, and storage medium for non-contact body temperature measurement to solve the problem that the existing non-contact clinical thermometer is difficult to measure remotely.
  • a non-contact method for measuring body temperature including:
  • the real body temperature of the target person is calculated according to the temperature compensation coefficient and the target body temperature.
  • a non-contact body temperature measurement device including:
  • the target body temperature measurement module is used to measure the target body temperature of the target person through a clinical thermometer
  • the influencing factor value module is used to obtain the value of the distance between the thermometer and the target person and the current environmental factor
  • the compensation coefficient calculation module is used to calculate the temperature compensation coefficient according to the value of the distance and current environmental factors
  • the real body temperature calculation module is used to calculate the real body temperature of the target person according to the temperature compensation coefficient and the target body temperature.
  • a clinical thermometer comprising a memory, a processor, and a computer program stored in the memory and running on the processor, and the processor implements the steps of the non-contact body temperature measurement method when the processor executes the computer program .
  • a computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the non-contact body temperature measurement method described above are realized.
  • thermometer In the non-contact method, device, thermometer and storage medium for measuring body temperature, firstly, the target body temperature of the target person is measured by the thermometer; then, the distance between the thermometer and the target person and the value of current environmental factors are obtained; secondly, The temperature compensation coefficient is calculated according to the value of the distance and the current environmental factors; finally, the real body temperature of the target person is calculated according to the temperature compensation coefficient and the target body temperature. It can be seen that the present invention can realize remote measurement of the real body temperature of the target person by compensating the measured target body temperature, distance, and environmental factors.
  • FIG. 1 is a flowchart of a method for non-contact body temperature measurement in an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for non-contact body temperature measurement in an application scenario to determine a target body temperature in an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of step 101, method one, of the method for non-contact body temperature measurement in an embodiment of the present invention in an application scenario;
  • FIG. 4 is a schematic flowchart of step 101, method two of the method for non-contact body temperature measurement in an embodiment of the present invention in an application scenario;
  • FIG. 5 is a schematic flowchart of a method for non-contact body temperature measurement in an embodiment of the present invention to measure a normal body temperature threshold after determining a target body temperature in an application scenario;
  • FIG. 6 is a schematic flow chart of determining a target person's normal body temperature threshold and judging the body temperature of a method for non-contact body temperature measurement in an embodiment of the present invention in an application scenario;
  • Fig. 7 is a schematic structural diagram of a non-contact body temperature measurement device in an embodiment of the present invention.
  • Fig. 8 is a schematic diagram of a clinical thermometer in an embodiment of the present invention.
  • a non-contact method for measuring body temperature which includes the following steps 101 to 104:
  • the clinical thermometer can be used to measure the body temperature from a distance, and the remote measurement of the body temperature can be within 1 meter of the target person to measure the body temperature of the target person.
  • the clinical thermometer is equipped with a distance sensor, which is used to measure the distance between the clinical thermometer and the target person, so as to calculate the distance compensation value.
  • the temperature will decrease with the distance.
  • the values of the current environmental factors include environmental temperature and environmental relative humidity.
  • the thermometer is equipped with a temperature and humidity sensor. Due to the long measurement distance, the current environmental temperature and relative humidity of the environment will be affected.
  • the temperature and humidity sensor It is used to measure the environmental temperature and relative humidity of the current environment, so as to calculate the first temperature compensation value and humidity compensation value.
  • the humidity compensation value CRH RH can be calculated according to the following formula * 0.0001, where CRh represents the humidity compensation value, and RH represents the relative humidity measured by the temperature and humidity sensor in the current environment.
  • S104 Calculate the real body temperature of the target person according to the temperature compensation coefficient and the target body temperature.
  • the real body temperature of the target person is calculated according to the temperature compensation coefficient and the target body temperature
  • the real body temperature of the target person TB TO * Csum, where TB represents the calculated actual body temperature of the target person, TO represents the target body temperature measured by the target person, and Csum represents the calculated temperature compensation coefficient.
  • measuring the target body temperature of a target person by a clinical thermometer may include the following steps 201 to 203:
  • S202 Determine whether the number of sample body temperatures reaches a preset value, and if the sample body temperature has not reached the preset value, re-collect multiple sample body temperatures of the target person until the number of collected sample body temperatures reaches the preset value;
  • S203 If the sample body temperature reaches a preset value, determine the target body temperature according to the preset rule and the plurality of sample body temperatures.
  • the simultaneous collection means that the user can collect multiple body temperatures at the same time in a short time by turning on the thermometer once. Analyze the collected multiple body temperatures to obtain multiple sample body temperatures, and then analyze the target body temperature from the multiple sample body temperatures. It is understandable that the thermometer in this embodiment is equipped with a program-written chip, which can be extremely Multiple body temperatures are collected simultaneously in a short period of time.
  • the step of simultaneously collecting body temperature of multiple samples of the target person's face through the infrared sensor may include the following method one or two:
  • the method one includes the following steps 301-304:
  • S302 Determine whether a plurality of said body temperatures are within a preset interval
  • the MLX90614 infrared sensor can be used to obtain the body temperature of a region of the face, and determine whether the body temperature is within the preset interval. If it is, the body temperature is determined as the sample body temperature. The individual temperature is analyzed one by one, and it is continuously judged whether multiple body temperatures are within the preset interval.
  • the preset interval can be set between 35°-40°, and the target person sends Low-grade fever, high-grade fever, or normal body temperature are generally within this range, and the collected 5 body temperatures are judged one by one whether they are within the preset interval.
  • the body temperature within the preset interval is determined as the sample body temperature. If the collected 5 body temperatures are within the preset interval, all 5 body temperatures can be determined Is the temperature of the sample.
  • the body temperature that is not within the preset interval is processed according to the preset flow.
  • a body temperature of 34° can be determined as an abnormal body temperature, and the processing can be directly discarded.
  • the second method includes the following steps 305 to 307:
  • S307 Determine the acquired highest body temperature in the preset interval as the sample body temperature.
  • the MLX90621 infrared sensor can be used to obtain a 4*16 infrared matrix, that is, 64 individual temperatures of different areas of the target person’s face are obtained, and 64 individual temperatures are collected multiple times, and 64 individual temperatures are collected at the same time. Collected 5 times, there are 5*64 body temperature data, and multiple body temperatures are analyzed one by one.
  • the body temperature in the preset interval is obtained from multiple body temperatures in the different regions.
  • the MLX90621 infrared sensor can obtain 64 body temperature data that can be read at a time, and obtain 64 body temperatures that meet the preset interval Multiple body temperatures. For example, if the person's normal body temperature is set in the range of 35-40, the body temperature in this range is obtained from the 64 body temperatures, and other body temperatures that do not meet this range are discarded.
  • the acquired highest body temperature in the preset interval is determined as the sample body temperature. If there are 60 body temperatures among the 64 body temperatures that meet the preset interval, then the highest body temperature among the 60 body temperatures is judged, and the highest body temperature is determined as the sample body temperature.
  • step 202 it is determined whether the number of sample body temperatures reaches a preset value.
  • the number of sample body temperatures is less than the preset value, that is, the number of sample body temperatures has not reached the preset value, multiple sample body temperatures of the target person are collected again until the collection The number of sample body temperatures reaches the preset value. For example, 5 sample body temperatures are required. When 5 sample body temperatures are read at the same time, it is judged whether 5 sample body temperatures are reached, and if there are less than 5, this reading will be abandoned When the body temperature is reached, restart reading the body temperature 5 times until the body temperature of 5 samples is reached after 5 consecutive readings.
  • the body temperature may not meet the preset interval, and the 5 body temperatures collected at the same time may not be the sample body temperature. If the number of sample body temperatures is less than the number of collections, Then give up the calculation of the body temperature and start the collection again.
  • the target body temperature is determined according to the preset rule and multiple sample body temperatures. Specifically, as shown in FIG. 5, the step 203 is based on the preset rule and The steps of determining the target body temperature by the body temperature of the multiple samples may include the following steps 401 to 403:
  • S402 Determine a preset number of sample body temperatures that are closest to the body temperature according to the difference;
  • S403 Calculate the average value of the preset number of sample body temperatures to obtain the target body temperature.
  • step 401 it can be understood that the difference between the body temperature of multiple samples is calculated. If there are 5 sample body temperatures, the difference between the body temperatures of the 5 samples is made two by one, and the difference can be calculated based on the multiple differences. Get the closest body temperature of multiple samples.
  • steps 402 and 403 for example, after obtaining the difference between the body temperatures of multiple samples, if 3 final sample body temperatures are required by default, select 3 from 5 sample body temperatures according to the multiple differences. The body temperature of the three closest samples is averaged to obtain the final target body temperature of the target person.
  • thermometer is not only used by one person, Face recognition can separately record and store the temperature of different target persons.
  • the infrared sensor model MLX90614 collects multiple body temperatures in the same area of the target person’s face at the same time.
  • the MLX90614 sensor can measure the temperature of a point on the target person’s face, and then The multiple temperatures collected at the same time are analyzed.
  • the simultaneous collection means that the user can collect multiple body temperatures at the same time in a short time by turning on the thermometer once.
  • the MLX90621 sensor can measure the 64-point temperature of the target person’s face, which is a 4 ⁇ 16 infrared temperature matrix. analysis.
  • the normal body temperature of each person is different, after the real body temperature of the target person is measured, as shown in Figure 6, it can also include:
  • S502 Determine the normal body temperature threshold of the target person according to the plurality of real body temperatures
  • the body temperature of each person is different.
  • the body temperature of pregnant women is higher, the body temperature of babies, teenagers, adults, and the elderly are also different, and the normal body temperatures of women and men are also different.
  • Even every person’s body temperature will be different every day.
  • a person’s body temperature will be a little lower in the morning and a little higher in the afternoon. According to the above-mentioned conditions, it is necessary to measure the normal body temperature threshold of the target person.
  • the target person will measure his body temperature from time to time. After each measurement of the real body temperature is obtained, the body temperature obtained by each measurement is recorded, so as to subsequently measure the target person's normal body temperature threshold. When the target person performs the next body temperature measurement, multiple real body temperature data recorded during a certain period of time are read out.
  • the time can be set by the target person or the system can specify itself.
  • step 502 it can be understood that according to different faces obtained by face recognition, the temperature of different target persons can correspond to their respective faces. Therefore, for different target persons, multiple persons use the same thermometer to compare the history of the target persons. The measured temperature has no effect, and it has no effect on the calculation of the target person's normal body temperature threshold.
  • the current measured real body temperature is compared with the normal body temperature threshold.
  • the real body temperature measured every time will be recorded in the database. Every time the body temperature timer is turned on, the time distance is read from the database. The average temperature of the last 100 target body temperatures at the moment is calculated. Assuming that the average temperature of the target person is 36.8°, the normal body temperature threshold can be determined to be 36.6°-37.1°, which can fluctuate up and down 0.3°, and the current measured real body temperature and the normal body temperature threshold value Compare.
  • one of the normal, low, or high body temperature of the target person is determined according to the normal body temperature threshold.
  • the measured normal body temperature threshold of Person A is 37°-37.5°
  • the current measured real body temperature is 36.5°
  • the body temperature is low
  • the current body temperature is 36.5°.
  • the measured target body temperature is 37.2°
  • compare the current measured real body temperature with the normal body temperature threshold It can be seen that the body temperature is normal.
  • the current measured real body temperature is 38°
  • compare the current measured real body temperature with the normal body temperature threshold By comparison, it can be seen that the body temperature is relatively high.
  • a speaker with a pronunciation function such as a speaker
  • the measurement result can be directly broadcasted by voice.
  • the body temperature value is directly displayed, and the body temperature test result is broadcasted by voice, and the target person is notified of the result of normal body temperature, low body temperature or high body temperature, which is convenient for people with visual impairment.
  • a function key is provided on the clinical thermometer, and the target person only needs to press the key to complete a series of operations such as turning on, measuring body temperature, and shutting down, which is convenient for the elderly to use.
  • the target body temperature of the target person is measured by the thermometer; then, the distance between the thermometer and the target person and the value of the current environmental factors are obtained; secondly, The temperature compensation coefficient is calculated according to the value of the distance and the current environmental factors; finally, the real body temperature of the target person is calculated according to the temperature compensation coefficient and the target body temperature. It can be seen that the present invention can realize remote measurement of the real body temperature of the target person by compensating the measured target body temperature, distance, and environmental factors.
  • a non-contact body temperature measurement device is provided, and the non-contact body temperature measurement device corresponds to the non-contact body temperature measurement method in the above-mentioned embodiment.
  • the non-contact body temperature measurement device includes a target body temperature measurement module 601, an influencing factor value calculation module 602, a compensation coefficient calculation module 603, and a real body temperature calculation module 604.
  • the detailed description of each functional module is as follows:
  • the target body temperature measurement module 601 is used to measure the target body temperature of a target person through a clinical thermometer
  • the influencing factor value module 602 is used to obtain the value of the distance between the thermometer and the target person and the current environmental factor;
  • the compensation coefficient calculation module 603 is configured to calculate the temperature compensation coefficient according to the distance and the values of current environmental factors
  • the real body temperature calculation module 604 is configured to calculate the real body temperature of the target person according to the temperature compensation coefficient and the target body temperature.
  • the target body temperature measurement module may include:
  • the sample body temperature collection unit is used to simultaneously collect multiple sample body temperatures of the target person's face through an infrared sensor;
  • the sample quantity judging unit is used to judge whether the sample body temperature quantity reaches the preset value, and if the sample body temperature has not reached the preset value, re-collect multiple sample body temperatures of the target person until the collected sample body temperature quantity reaches the stated value default value;
  • the target body temperature determination unit is configured to determine the target body temperature according to a preset rule and a plurality of body temperatures of the sample if the body temperature of the sample reaches a preset value.
  • the sample body temperature collection unit is configured to simultaneously collect multiple body temperatures of the same area of the face of the target person through an infrared sensor; determine whether the multiple body temperatures are within a preset interval; if the body temperature is within the preset interval, then Determine the body temperature in the preset interval as the sample body temperature; if the body temperature is not within the preset interval, process according to the preset procedure;
  • sample body temperature collection unit is configured to simultaneously collect multiple body temperatures in different areas of the face of the target person through an infrared sensor; obtain the body temperature within a preset interval from the multiple body temperatures in the different areas; The highest body temperature in the preset interval is determined as the sample body temperature.
  • the target body temperature determining unit may also be used to calculate the difference between two of the body temperatures of the plurality of samples; determine the preset number of sample body temperatures with the closest body temperature according to the difference; and calculate the preset body temperature. The average of the body temperature of the number of samples gets the target body temperature.
  • sample body temperature collection unit is used to simultaneously collect multiple body temperatures in the same area of the face of the target person through an infrared sensor of model MLX90614;
  • sample body temperature collection unit is used to simultaneously collect multiple body temperatures in different areas of the target person's face through an infrared sensor with a model of MLX90621.
  • non-contact body temperature measurement device may further include:
  • the face recognition module is used to determine the facial area of the target person according to the face recognition.
  • non-contact body temperature measurement device may further include:
  • the real body temperature acquisition module is used to acquire multiple real body temperatures of the target person within a preset time period
  • a body temperature threshold determination module configured to determine the normal body temperature threshold of the target person according to a plurality of said real body temperatures
  • the real body temperature comparison module is used to measure and calculate the current real body temperature of the target person, and compare the current real body temperature with the normal body temperature threshold;
  • the low body temperature judgment module is used to judge that the body temperature of the target person is low when the current real body temperature is lower than the minimum value of the normal body temperature threshold;
  • the normal body temperature judgment module is used for judging that the body temperature of the target person is normal when the current real body temperature is within the normal body temperature threshold range;
  • the high body temperature judgment module is used for judging that the body temperature of the target person is too high when the current real body temperature is higher than the maximum value of the normal body temperature threshold.
  • each module in the above non-contact body temperature measurement device can be implemented in whole or in part by software, hardware, and a combination thereof.
  • the above-mentioned modules may be embedded in the form of hardware or independent of the processor in the clinical thermometer, or may be stored in the memory of the clinical thermometer in the form of software, so that the processor can call and execute the operations corresponding to the above modules.
  • a clinical thermometer which may be a terminal, and its internal structure diagram may be as shown in FIG. 8.
  • the clinical thermometer includes a processor, a memory, a network interface, a display screen and an input device connected through a system bus.
  • the processor of the clinical thermometer is used to provide calculation and control capabilities.
  • the memory of the clinical thermometer includes a non-volatile storage medium and an internal memory.
  • the non-volatile storage medium stores an operating system and a computer program.
  • the internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium.
  • the network interface of the clinical thermometer is used to communicate with an external server through a network connection.
  • the computer program is executed by the processor to realize a non-contact method of measuring body temperature.
  • a clinical thermometer including a memory, a processor, and a computer program stored in the memory and capable of running on the processor.
  • the processor executes the computer program to implement the non-contact body temperature measurement in the foregoing embodiment.
  • the steps of the method for example, step 101 to step 104 shown in FIG. 1.
  • the processor executes the computer program, the function of each module/unit of the non-contact body temperature measurement device in the above embodiment is realized, for example, the function of the module 601 to the module 604 shown in FIG. 6. To avoid repetition, I won’t repeat them here.
  • a computer-readable storage medium on which a computer program is stored.
  • the steps of the method for non-contact body temperature measurement in the above-mentioned embodiment are realized, for example, as shown in FIG. 1 ⁇ Step 101 to Step 104.
  • the function of each module/unit of the non-contact body temperature measurement device in the above embodiment is realized, for example, the function of the module 601 to the module 604 shown in FIG. 6. To avoid repetition, I won’t repeat them here.
  • Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory.
  • Volatile memory may include random access memory (RAM) or external cache memory.
  • RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Channel (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

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Abstract

L'invention concerne un procédé de mesure de température corporelle sans contact, appliqué dans le domaine des instruments médicaux et utilisé pour résoudre le problème des thermomètres sans contact existants ayant des difficultés à mesurer une température corporelle à distance. Le procédé consiste à : mesurer une température corporelle cible d'une personne cible au moyen d'un thermomètre (S101) ; acquérir la distance entre le thermomètre et la personne cible et une valeur d'un facteur environnemental actuel (S102) ; calculer un coefficient de compensation de température en fonction de la température corporelle cible, de la distance et de la valeur du facteur environnemental actuel (S103) ; réaliser un calcul en fonction du coefficient de compensation de température et de la température corporelle cible pour obtenir une température corporelle réelle de la personne cible (S104).
PCT/CN2019/122752 2019-08-30 2019-12-03 Procédé et appareil de mesure de température corporelle sans contact, thermomètre et support de stockage Ceased WO2021036073A1 (fr)

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CN201910817033.8 2019-08-30
CN201910817033.8A CN112444318B (zh) 2019-08-30 2019-08-30 非接触式测量体温的方法、装置、体温计及存储介质

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