CN111537085A - Infrared thermal imaging temperature measurement system and method capable of automatically correcting ambient temperature - Google Patents
Infrared thermal imaging temperature measurement system and method capable of automatically correcting ambient temperature Download PDFInfo
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- CN111537085A CN111537085A CN202010410956.4A CN202010410956A CN111537085A CN 111537085 A CN111537085 A CN 111537085A CN 202010410956 A CN202010410956 A CN 202010410956A CN 111537085 A CN111537085 A CN 111537085A
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- 238000001931 thermography Methods 0.000 title claims abstract description 60
- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 39
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- 230000003287 optical effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000005457 Black-body radiation Effects 0.000 description 8
- 230000036760 body temperature Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 238000012216 screening Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 241000711573 Coronaviridae Species 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
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- 208000000059 Dyspnea Diseases 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 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
- G01J5/52—Radiation pyrometry, e.g. infrared or optical thermometry using comparison with reference sources, e.g. disappearing-filament pyrometer
- G01J5/53—Reference sources, e.g. standard lamps; Black bodies
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- 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
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- 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
- G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
- G01J5/0025—Living bodies
-
- 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
- G01J5/02—Constructional details
- G01J5/0265—Handheld, portable
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- 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
- G01J5/80—Calibration
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- 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
- G01J2005/0077—Imaging
Abstract
The invention discloses an infrared thermal imaging temperature measurement system and method with automatic environmental temperature correction, wherein the system comprises a temperature reference object, a temperature sensor and a temperature sensor, wherein the temperature reference object is fixed in a measured scene and changes along with the environmental temperature, and the emissivity of the surface material of the temperature reference object or a coating coated on the surface material is close to 1; the temperature measuring module is used for real-time surface temperature reference object temperature data; the communication module is used for transmitting the temperature data of the temperature reference object to the infrared thermal imaging temperature measuring instrument in real time; the temperature measuring module is electrically connected with the communication module. The temperature measuring module acquires the temperature of the temperature reference object in the natural environment in real time, realizes dynamic data transmission with the infrared thermal imaging thermometer through the communication module, realizes quick correction of the infrared thermal imaging thermometer and effectively improves the measuring precision of the infrared thermal imaging thermometer; the invention does not need to heat or refrigerate to stabilize the constant temperature of the temperature reference object, has small power consumption and small volume and is convenient to install and carry.
Description
Technical Field
The invention relates to the technical field of radiation temperature measurement, in particular to an infrared thermal imaging temperature measurement system and method capable of automatically correcting ambient temperature.
Background
Recently, the pneumonia epidemic situation infected by the novel coronavirus has drawn everyone, and the symptoms of patients infected by the novel coronavirus mainly show symptoms of fever, cough, dyspnea, hypodynamia and the like, so that the measurement of body temperature becomes a necessary means for preventing and controlling the epidemic situation. The human body infrared temperature measuring equipment is widely used in various traffic gateways, hospitals, residential districts, enterprises and public institutions with dense people flow due to the characteristics of non-contact, high efficiency and convenient use. The commonly used human body infrared temperature measuring equipment mainly comprises an infrared thermal imaging clinical thermometer screening instrument and an infrared thermometer. The infrared thermal imaging body temperature screening instrument can be used for large-area monitoring in crowded public places, automatically tracking and alarming high-temperature areas, and can be matched with visible light videos to quickly find out and track people with high body temperature.
With the great application of the infrared thermal imaging body temperature screening instrument in airports, stations and other places, how to carry out on-site correction on the infrared thermal imaging body temperature screening instrument is very important. The blackbody radiation source is used as a universal infrared target and is mainly used for performance test, correction and calibration of an infrared thermal imaging system, and the stability precision and stability of the blackbody radiation source directly influence the final performance of a product. The traditional blackbody radiation source is fixed to be constant in temperature through heating or refrigeration and serves as a reference source for high-precision temperature measurement, the traditional blackbody radiation source is greatly influenced by the environment outdoors, particularly in extreme weather such as wind and rain, when the temperature of the blackbody radiation source changes, the traditional blackbody radiation source cannot communicate with an infrared thermal imaging temperature measuring instrument in real time to obtain the real-time temperature of the traditional blackbody radiation source, and cross errors occur, so that the precision of the infrared thermal imaging temperature measuring instrument is seriously influenced. The traditional blackbody radiation source needs heating or refrigeration to keep constant temperature, so that the power consumption and the volume are large, and the use occasion is limited.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an infrared thermal imaging temperature measurement system and method with automatic environmental temperature correction, the system can dynamically transmit data with an infrared thermal imaging temperature measurement instrument in real time, the temperature of a temperature reference object does not need to be stabilized through heating or refrigeration, the power consumption is low, and the specific technical scheme is as follows:
an infrared thermal imaging temperature measurement system with automatic environmental temperature correction function comprises:
the temperature reference object is fixed in a detected scene and is positioned in the same data acquisition plane with the detected object, the temperature changes along with the ambient temperature, and the emissivity of the surface material of the temperature reference object or the coating coated on the surface material is close to 1;
the temperature measuring module is used for measuring the temperature data of the surface of the temperature reference object in real time;
the infrared thermal imaging thermometer is used for acquiring the thermal image temperature of a measured object and a temperature reference object, and the temperature reference object is arranged in the detection range of the infrared thermal imaging thermometer;
the communication module is used for transmitting the temperature data of the surface of the temperature reference object to the infrared thermal imaging thermometer in real time;
the power supply module supplies power to the communication module and the temperature measuring module;
the temperature measuring module is electrically connected with the communication module.
Furthermore, the temperature measurement module comprises a temperature acquisition module and an operation processing module, the temperature acquisition module is used for acquiring an analog signal of the surface temperature of the temperature reference object in real time, and the operation processing module is used for converting the temperature analog signal into a temperature digital signal, analyzing, processing and outputting the temperature digital signal; the temperature acquisition module is electrically connected with the operation processing module.
Preferably, the communication module is at least one of a wired communication module, a wireless communication module or an optical communication module.
Preferably, the power supply module is at least one of an active power supply interface module, a rechargeable battery, a solar battery or a dry battery.
Preferably, the wireless communication module is at least one of a bluetooth module, a Wifi module, a Zigbee module, or an RFID module.
An infrared thermal imaging temperature measurement method with automatic environmental temperature correction specifically comprises the following steps:
(1) the temperature reference object is fixed in a measured scene and is positioned in the same data acquisition plane with the measured object, the emissivity of the surface material of the temperature reference object or the coating coated on the surface material is close to 1, the temperature of the surface material changes along with the ambient temperature, and the temperature measurement module measures the temperature data of the surface of the temperature reference object in real time and transmits the temperature data to the communication module;
(2) the infrared thermal imaging temperature measuring instrument simultaneously collects infrared radiation energy signals of a measured object and a temperature reference object, converts the collected infrared radiation energy signals into digital signals, and then obtains the thermal image temperatures of the measured object and the temperature reference object through analysis and processing;
(3) the surface temperature of the temperature reference object is transmitted to the infrared thermal imaging temperature measuring instrument in real time through the communication module, the infrared thermal imaging temperature measuring instrument analyzes and compares the surface temperature of the temperature reference object with the thermal image temperature to obtain a deviation value, and the deviation value is used for correcting the thermal image temperature of the measured object to obtain the accurate temperature of the measured object.
Furthermore, the temperature measurement module comprises a temperature acquisition module and an operation processing module, the temperature acquisition module is used for acquiring an analog signal of the surface temperature of the temperature reference object in real time, and the operation processing module is used for converting the temperature analog signal into a temperature digital signal, analyzing, processing and outputting the temperature digital signal; the temperature acquisition module is electrically connected with the operation processing module.
The temperature reference object is always in the detection range of the infrared thermal imaging thermometer.
Compared with the prior art, the invention has the beneficial effects that:
(1) the temperature measuring module in the invention acquires the temperature of the temperature reference object in the natural environment in real time, realizes dynamic data transmission with the infrared thermal imaging thermometer through the communication module, realizes quick correction of the infrared thermal imaging thermometer and effectively improves the measuring precision of the infrared thermal imaging thermometer;
(2) the temperature reference object is exposed to the natural environment, the temperature of the temperature reference object changes along with the environment temperature, a constant temperature system is not needed to stabilize the temperature of the temperature reference object through heating or refrigeration, and the temperature reference object is not needed to be powered to maintain constant temperature, so that the power consumption of the whole system is low, the power supply can be completed by adopting a rechargeable battery or a common battery, the size is small, and the installation and the carrying are convenient.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The following detailed description of the embodiments and specific operations of the present invention will be made with reference to fig. 1, but the scope of the present invention is not limited to the following examples.
The invention discloses an infrared thermal imaging temperature measurement system capable of automatically correcting ambient temperature, which comprises a temperature reference object 1, a temperature measurement module, an infrared thermal imaging thermometer 2, a communication module and a power supply module, as shown in figure 1. The infrared thermal imaging thermometer 2 is used for acquiring the thermal image temperature of a measured object and a temperature reference object 1, the temperature reference object 1 is fixed in a measured scene, power supply is not needed, the temperature reference object is always positioned in the detection range of the infrared thermal imaging thermometer 2 and is positioned in the same data acquisition plane with the measured object, the surface temperature of the temperature reference object 1 is uniform, the emissivity of a surface material or a coating coated on the surface material is close to 1, the surface material is a sampling reference of the infrared thermal imaging thermometer 2 and is exposed in the measured scene, the temperature of the temperature reference object is not needed to be stabilized through heating or refrigeration, the surface temperature of the temperature reference object changes along with the ambient temperature, the temperature measurement module is used for measuring the real-time surface temperature data of the temperature reference object 1, the communication module is used for transmitting the temperature data of the surface of the temperature reference object and the infrared thermal imaging thermometer 2 in real time, the temperature measuring module is electrically connected with the communication module. It should be noted that the communication module can be integrated with the temperature measurement module, or can be disposed separately from the temperature measurement module; when the temperature measuring device is used specifically, the temperature measuring module measures the temperature data of the temperature reference object 1 in a scene in real time, and the communication module transmits the real-time surface temperature data of the temperature reference object 1 to the infrared thermal imaging temperature measuring instrument 2.
Furthermore, the temperature measurement module comprises a temperature acquisition module and an operation processing module, wherein the temperature acquisition module is used for acquiring a temperature analog signal of the surface of the temperature reference object in real time, and the operation processing module is used for converting the temperature analog signal into a temperature digital signal and carrying out analysis processing and output; the temperature acquisition module is electrically connected with the operation processing module, wherein the operation processing module can be integrated on the temperature acquisition module to form an element capable of directly outputting the temperature digital signal, and can also be separately arranged with the temperature acquisition module.
In the present invention, the material of the temperature reference object 1 is preferably red copper, because red copper has good oxidation resistance and high heat conductivity, so that the temperature reference object has uniform temperature distribution and high cost performance, and a high emissivity coating such as black body material without black paint can be coated on the temperature reference object to improve the effective emissivity of the temperature reference object. One or more temperature measuring holes/grooves 11 can be arranged on the temperature reference object 1, in order to effectively improve the measurement precision of the temperature reference object and reduce errors caused by nonuniformity, 2-4 temperature measuring points can be properly arranged, the temperature measuring modules are respectively placed in the corresponding temperature measuring holes/grooves 11 for temperature measurement, the arrangement positions of the temperature measuring holes/grooves can be specifically designed according to the structure of the temperature reference object and the shape of the temperature measuring modules, of course, the temperature measuring modules can also be directly adhered to the temperature reference object 1 for temperature measurement, and the fixing mode of the temperature measuring modules and the temperature reference object is not specifically limited.
The communication mode in the invention can adopt at least one of wired, wireless or optical communication, namely the communication module is at least one of a wired communication module, a wireless communication module or an optical communication module. Further, the wireless communication module is at least one of a bluetooth module, a Wifi module, a Zigbee module, or an RFID module, and the present invention is not particularly limited.
The temperature reference object in the invention does not need to be heated or refrigerated to be stable and constant, namely, the temperature reference object does not need to be powered to maintain constant temperature, so that the whole temperature measuring system has low power consumption and low power consumption, the power supply module can adopt at least one of an active power supply interface module, a rechargeable battery, a solar battery or a dry battery, and in view of the low power consumption and the continuous power supply of the power supply, the power supply module is preferably the rechargeable battery, can continuously work for 5-8 days after being charged once, has small volume, is convenient to carry and move, and is widely applied.
Based on the infrared thermal imaging temperature measurement system with the automatic environmental temperature correction provided by the embodiment, the invention also provides an infrared thermal imaging temperature measurement method with the automatic environmental temperature correction, which specifically comprises the following steps:
(1) the temperature reference object is fixed in a detected scene, is always positioned in the detection range of the infrared thermal imaging temperature measuring instrument and is positioned on the same data acquisition surface with the detected object, the temperature reference object is exposed in a natural environment, the temperature of the temperature reference object changes along with the ambient temperature, and the temperature measuring module measures the temperature data of the surface of the temperature reference object in real time and transmits the temperature data to the communication module; the temperature reference object can be made of red copper, and a layer of high-emissivity coating such as black body material without black paint can be coated on the surface of the temperature reference object; the temperature measurement module comprises a temperature acquisition module and an operation processing module, wherein the temperature acquisition module is used for acquiring a surface temperature analog signal of the temperature reference object in real time, and the operation processing module is used for converting the temperature analog signal into a temperature digital signal and carrying out analysis processing and output; the temperature acquisition module is electrically connected with the operation processing module, wherein the operation processing module can be integrated on the temperature acquisition module to form an element capable of directly outputting a temperature digital signal, and can also be separately arranged from the temperature acquisition module;
(2) the infrared thermal imaging temperature measuring instrument simultaneously collects infrared radiation energy signals of a measured object and a temperature reference object, converts the collected infrared radiation energy signals into digital signals, and then obtains the thermal image temperatures of the measured object and the temperature reference object through analysis and processing;
(3) the surface temperature of the temperature reference object is transmitted to the infrared thermal imaging temperature measuring instrument in real time through the communication module, the infrared thermal imaging temperature measuring instrument analyzes and compares the surface temperature of the temperature reference object with the thermal image temperature to obtain a deviation value, and the deviation value is used for correcting the thermal image temperature of the measured object to obtain the accurate temperature of the measured object.
The surface temperature of the temperature reference object in the natural environment is obtained in real time through the temperature measuring module, dynamic data transmission with the infrared thermal imaging thermometer is achieved through the communication module, the infrared thermal imaging thermometer takes the surface temperature of the temperature reference object as a sampling reference, the offset/rate of the surface temperature of the temperature reference object and the thermal image temperature is calculated, rapid correction of the infrared thermal imaging thermometer is achieved, the accurate temperature of the measured object is obtained, and the measuring precision of the infrared thermal imaging thermometer is effectively improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides an infrared thermal imaging temperature measurement system of ambient temperature automatic correction which characterized in that includes:
the temperature reference object is fixed in a detected scene and is positioned in the same data acquisition plane with the detected object, the temperature changes along with the ambient temperature, and the emissivity of the surface material of the temperature reference object or the coating coated on the surface material is close to 1;
the temperature measuring module is used for measuring the temperature data of the surface of the temperature reference object in real time;
the infrared thermal imaging thermometer is used for acquiring the thermal image temperature of a measured object and a temperature reference object, and the temperature reference object is arranged in the detection range of the infrared thermal imaging thermometer;
the communication module is used for transmitting the temperature data of the surface of the temperature reference object to the infrared thermal imaging thermometer in real time;
the power supply module supplies power to the communication module and the temperature measuring module;
the temperature measuring module is electrically connected with the communication module.
2. The infrared thermal imaging temperature measurement system with the automatic environmental temperature correction function according to claim 1, wherein the temperature measurement module comprises a temperature acquisition module and an operation processing module, the temperature acquisition module is used for acquiring an analog signal of the surface temperature of the temperature reference object in real time, and the operation processing module is used for converting the temperature analog signal into a temperature digital signal, analyzing, processing and outputting the temperature digital signal; the temperature acquisition module is electrically connected with the operation processing module.
3. The infrared thermal imaging temperature measurement system according to claim 1, wherein the communication module is at least one of a wired communication module, a wireless communication module or an optical communication module.
4. The ambient temperature auto-correcting infrared thermographic temperature measurement system of claim 1, wherein said power module is at least one of an active power interface module, a rechargeable battery, a solar cell, or a dry cell.
5. The infrared thermal imaging temperature measurement system with automatic ambient temperature correction according to claim 3, wherein the wireless communication module is at least one of a Bluetooth module, a Wifi module, a Zigbee module or an RFID module.
6. An infrared thermal imaging temperature measurement method capable of automatically correcting environmental temperature is characterized by specifically comprising the following steps:
(1) the temperature reference object is fixed in a measured scene and is positioned in the same data acquisition plane with the measured object, the emissivity of the surface material of the temperature reference object or the coating coated on the surface material is close to 1, the temperature of the surface material changes along with the ambient temperature, and the temperature measurement module measures the temperature data of the surface of the temperature reference object in real time and transmits the temperature data to the communication module;
(2) the infrared thermal imaging temperature measuring instrument simultaneously collects infrared radiation energy signals of a measured object and a temperature reference object, converts the collected infrared radiation energy signals into digital signals, and then obtains the thermal image temperatures of the measured object and the temperature reference object through analysis and processing;
(3) the surface temperature of the temperature reference object is transmitted to the infrared thermal imaging temperature measuring instrument in real time through the communication module, the infrared thermal imaging temperature measuring instrument analyzes and compares the surface temperature of the temperature reference object with the thermal image temperature to obtain a deviation value, and the deviation value is used for correcting the thermal image temperature of the measured object to obtain the accurate temperature of the measured object.
7. The infrared thermal imaging temperature measurement method for automatically correcting the environmental temperature according to claim 6, wherein the temperature measurement module comprises a temperature acquisition module and an operation processing module, the temperature acquisition module is used for acquiring an analog signal of the surface temperature of the temperature reference object in real time, and the operation processing module is used for converting the temperature analog signal into a temperature digital signal, analyzing and processing the temperature digital signal and outputting the temperature digital signal; the temperature acquisition module is electrically connected with the operation processing module.
8. The infrared thermal imaging temperature measurement method for automatically correcting the environmental temperature according to claim 6, wherein the temperature reference object is always within the detection range of an infrared thermal imaging thermometer.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113138025A (en) * | 2021-03-18 | 2021-07-20 | 深圳市科陆精密仪器有限公司 | Automatic calibration method and device for infrared temperature measurement equipment |
| CN115283456A (en) * | 2022-10-09 | 2022-11-04 | 冠县仁泽复合材料有限公司 | Hot-dip galvanized steel sheet on-line temperature detection method and production process |
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2020
- 2020-05-15 CN CN202010410956.4A patent/CN111537085A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113138025A (en) * | 2021-03-18 | 2021-07-20 | 深圳市科陆精密仪器有限公司 | Automatic calibration method and device for infrared temperature measurement equipment |
| CN115283456A (en) * | 2022-10-09 | 2022-11-04 | 冠县仁泽复合材料有限公司 | Hot-dip galvanized steel sheet on-line temperature detection method and production process |
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