CN117740157A - Use infrared temperature measurement system that unmanned aerial vehicle carried - Google Patents
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Abstract
The invention provides an infrared temperature measurement system carried by an unmanned aerial vehicle, and belongs to the technical field of optical measurement. The temperature measurement system comprises an unmanned aerial vehicle body, an infrared temperature measurement module, an image acquisition module, a telescopic driving module and a control module. The infrared temperature measurement module adopts an infrared band optical signal to carry out non-contact temperature measurement, and the image acquisition module captures a visible light image. The telescopic driving module adjusts the position and the angle of the infrared temperature measuring module so as to adapt to different measuring conditions. The control module is responsible for coordination of data transmission and system instructions. The system is specially designed with a built-in temperature correction structure for detecting the ambient temperature and correcting the dynamic temperature, thereby ensuring the measurement accuracy. In addition, the system includes a remote controller for receiving feedback data and issuing control instructions, and for calculating formulas for input power and temperature differences. The system also comprises a telescopic driving module with a shockproof function, so that stability and practicability are improved.
Description
Technical Field
The invention belongs to the technical field of optical measurement, and particularly relates to an infrared temperature measurement system carried by an unmanned aerial vehicle.
Background
In the technical field of unmanned aerial vehicles which are rapidly developed at present, the combination of an infrared temperature measurement technology and the unmanned aerial vehicle has become an important innovation direction. Infrared thermometry, particularly in extreme environments, presents a number of challenges. The traditional infrared temperature measurement method is greatly influenced by environmental factors, and particularly under high altitude or high temperature environment, the external factors can obviously influence the temperature measurement precision.
Referring to the disclosed related document, the technical scheme with the publication number of CN113155293A provides a human body remote sensing temperature measurement monitoring identification system based on an unmanned aerial vehicle, which realizes rapid body temperature acquisition of people in a public area through a patrol route arranged in the public area; the technical scheme with the bulletin number KR101768012B1 is that a thermal imager is arranged on an unmanned aerial vehicle and is used for timely finding forest fire and transmitting fire information; the technical scheme with the publication number of CN112577606A provides a fan blade inspection method for carrying active thermal imaging on double unmanned aerial vehicles, and the two unmanned aerial vehicles are utilized to perform blade inspection of a large-scale wind driven generator.
The above technical schemes all provide a plurality of methods for performing temperature measurement and heat source inspection by using the unmanned aerial vehicle and the sensors carried by the unmanned aerial vehicle, but there is no mention about the compensation method for the sensor error condition of the related sensors when the related sensors are used in environments with larger temperature difference.
The foregoing discussion of the background art is intended to facilitate an understanding of the present invention only. This discussion is not an admission or admission that any of the material referred to was common general knowledge.
Disclosure of Invention
The invention aims to provide an infrared temperature measurement system carried by an unmanned aerial vehicle, and belongs to the technical field of optical measurement. The temperature measurement system comprises an unmanned aerial vehicle body, an infrared temperature measurement module, an image acquisition module, a telescopic driving module and a control module. The infrared temperature measurement module adopts an infrared band optical signal to carry out non-contact temperature measurement, and the image acquisition module captures a visible light image. The telescopic driving module adjusts the position and the angle of the infrared temperature measuring module so as to adapt to different measuring conditions. The control module is responsible for coordination of data transmission and system instructions. The system is specially designed with a built-in temperature correction structure for detecting the ambient temperature and correcting the dynamic temperature, thereby ensuring the measurement accuracy. In addition, the system includes a remote controller for receiving feedback data and issuing control instructions, and for calculating formulas for input power and temperature differences. The system also comprises a telescopic driving module with a shockproof function, so that stability and practicability are improved.
The invention adopts the following technical scheme:
an infrared temperature measurement system using an unmanned aerial vehicle to carry, the infrared temperature measurement system comprising:
the unmanned aerial vehicle body is configured to carry each working module of the infrared temperature measurement system for flying;
the infrared temperature measurement module is configured to perform non-contact temperature measurement on the target object by adopting an optical signal based on an infrared band so as to obtain a temperature value of the target object;
an image acquisition module configured to acquire a visible light image, and generate a measurement image in which a temperature value of a target object is displayed in the visible light image by combining the visible light image with the temperature value of the target object obtained by the infrared thermometry module;
the telescopic driving module is fixed on the unmanned aerial vehicle body after being combined with the infrared measurement module and the image acquisition module, and is configured to adjust the positions and the direction angles aimed by the infrared measurement module and the image acquisition module;
the control module is configured to be communicatively coupled with the unmanned aerial vehicle body, the infrared temperature measurement module, the image acquisition module and the telescopic driving module, and perform data transmission with the above components;
the infrared temperature measurement module realizes internal dynamic temperature correction based on environmental factors through a built-in temperature correction structure; the infrared temperature measurement module includes:
an infrared sensor assembly including a sensor and a sensor housing;
a package encasing the infrared sensor assembly; the package has an open end and a closed end;
a metal frame, wherein the metal frame includes a transmissive window disposed in a closed end of the enclosure; the metal frame is provided with a thermal resistance temperature sensor around the transmission window, the thermal resistance temperature sensor is used for detecting the ambient temperature of the infrared temperature measuring module, and the input current of the thermal resistance temperature sensor is regulated according to the ambient temperature so that the thermal resistance temperature sensor heats to enable the transmission window to be kept at a preset temperature;
preferably, the infrared temperature measurement system further comprises:
the remote controller is configured to be in communication connection with the control module so as to receive feedback data of the unmanned aerial vehicle body, the infrared temperature measurement module, the image acquisition module and the telescopic driving module and implement issuing control instructions to the unmanned aerial vehicle body, the infrared temperature measurement module, the image acquisition module and the telescopic driving module; the remote controller is provided with a display device for displaying the measurement image;
preferably, the packaging piece is made of high polymer plastic;
preferably, the metal frame is made of copper, aluminum or other metal or alloy materials with the heat conductivity of more than 150W/mK;
preferably, the type of the sensor is any one of the following: a far infrared sensor, a near infrared sensor, a refrigeration infrared sensor, and a non-refrigeration infrared sensor;
preferably, the top of the infrared sensing element of the sensor faces an optical lens, and infrared rays in the environment enter the sensor through the optical lens and act on the infrared sensing element;
the bottom of the infrared sensing element of the sensor is fixed on a circuit substrate;
the circuit substrate is fixedly arranged at a first end of the sensor shell, and the lens is fixedly arranged at a second end, opposite to the first end, of the sensor shell;
preferably, the infrared temperature measurement system comprises determining the input power W and the current temperature t of the thermal resistance temperature sensor by adopting the following calculation formula pre Target temperature T target Is the relation of (1), namely:
T＝t target -t pre a formula 1;
where m is the mass of the metal frame, c is the specific heat capacity of the metal frame material, opt is the time required to reach the target temperature, k is the thermal conductivity of the metal frame, E is a relative height coefficient, and E is calculated by:
e=eβ·h, formula 3;
in formula 3, H represents the current flight level; beta is an adjusting coefficient, and is set by relevant technicians through experiments according to climbing capacity of the unmanned aerial vehicle;
preferably, the telescopic driving module comprises an elastic damping element and a vibration sensor; the elastic damping element is used for absorbing and relieving vibration and impact generated in the flight process of the unmanned aerial vehicle; the vibration sensor is used for monitoring and adjusting the telescopic range and the adjusting speed of the telescopic driving module in real time, and setting the acquired target object temperature value as an effective value after the vibration is smaller than a specified preset threshold value.
The beneficial effects obtained by the invention are as follows:
1. the working environment of the infrared temperature measurement system is strong in adaptability, dynamic temperature correction is realized through the built-in heating device, the infrared temperature measurement system is effectively adapted to complex environments, and the temperature measurement accuracy is improved;
2. the infrared temperature measurement system of the technical scheme has the advantages that the flexibility and the accuracy of measurement are optimized, the angle and the distance of the temperature measurement module are adjusted through the arrangement of the telescopic driving module, and the flexibility and the measurement accuracy during measurement are enhanced;
3. the infrared temperature measurement system of the technical scheme has high-precision temperature correction adjustment setting, adopts a calculation formula, accurately adjusts heating power according to environmental changes, ensures that a medium between the infrared sensor and a target object has preset proper working temperature, and thereby assists in improving measurement accuracy;
4. according to the technical scheme, all working parts in the infrared temperature measurement system are in a modularized design, and maintenance and upgrading of the system can be realized by independently optimizing and replacing the working modules in the working parts, so that the subsequent use cost and upgrading cost are reduced.
Drawings
The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.
Reference numerals illustrate: 10-unmanned aerial vehicle body; 11-an infrared temperature measurement module; 12-an image acquisition module; 13-a telescopic drive module; 14-a control module; 15-a remote controller; 102-packaging; 104-a sensor housing; 106-an optical lens; 108-a circuit substrate; 112-glass filler; 110-thermal resistance temperature sensor; 114-metal wire; 116-lead-out wires; 118-floor; 120-metal frame; 122-a second thermal resistance temperature sensor;
FIG. 1 is a schematic diagram of a structural framework of an infrared thermometry system according to the present invention;
FIG. 2 is a schematic diagram of a unmanned aerial vehicle and various modules in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of the infrared temperature measurement module according to an embodiment of the invention.
Detailed Description
In order to make the technical scheme and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the following examples thereof; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. Other systems, methods, and/or features of the present embodiments will be or become apparent to one with skill in the art upon examination of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description. Included within the scope of the invention and protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the following detailed description.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if any, the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, this is for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or component to be referred to must have a specific orientation. The terms describing the positional relationship in the drawings are merely for illustrative purposes and are not to be construed as limiting the present patent, and specific meanings of the terms are understood by those of ordinary skill in the art according to specific circumstances.
Embodiment one: as shown in fig. 1, an exemplary frame diagram of an infrared temperature measurement system mounted by using an unmanned aerial vehicle is provided, where the infrared temperature measurement system includes:
the unmanned aerial vehicle body 10 is configured to carry each working module of the infrared temperature measurement system for flying;
an infrared temperature measurement module 11 configured to perform a contactless temperature measurement of a target object using an infrared band-based optical signal to obtain a temperature value of the target object;
an image acquisition module 12 configured to acquire a visible light image, and to generate a measurement image in which the temperature value of the target object is displayed in the visible light image by combining the visible light image with the temperature value of the target object obtained by the infrared thermometry module;
the telescopic driving module 13 is fixed on the unmanned aerial vehicle body 100 after being combined with the infrared measuring module and the image acquisition module, and is configured to adjust the positions and the direction angles aimed by the infrared measuring module and the image acquisition module;
the control module 14 is configured to be communicatively coupled with the unmanned aerial vehicle body 10, the infrared temperature measurement module 11, the image acquisition module 12 and the telescopic driving module 13, and perform data transmission with the above components;
the infrared temperature measurement module 11 realizes internal dynamic temperature correction based on environmental factors through a built-in temperature correction structure; the infrared temperature measurement module 11 includes:
an infrared sensor assembly including a sensor and a sensor housing;
a package encasing the infrared sensor assembly; the package has an open end and a closed end;
a metal frame, wherein the metal frame includes a transmissive window disposed in a closed end of the enclosure; the metal frame is provided with a thermal resistance temperature sensor around the transmission window, the thermal resistance temperature sensor is used for detecting the ambient temperature of the infrared temperature measuring module, and the input current of the thermal resistance temperature sensor is regulated according to the ambient temperature so that the thermal resistance temperature sensor heats to enable the transmission window to be kept at a preset temperature;
preferably, the infrared temperature measurement system further comprises:
the remote controller 15 is configured to be in communication connection with the control module 14, so as to receive feedback data of the unmanned aerial vehicle body 10, the infrared temperature measurement module 11, the image acquisition module 12 and the telescopic driving module 13, and implement a control instruction for each component; the remote controller is provided with a display device for displaying the measurement image;
preferably, the packaging piece is made of high polymer plastic;
preferably, the metal frame is made of copper, aluminum or other metal or alloy materials with the heat conductivity of more than 150W/mK;
preferably, the type of the sensor is any one of the following: a far infrared sensor, a near infrared sensor, a refrigeration infrared sensor, and a non-refrigeration infrared sensor;
preferably, the top of the infrared sensing element of the sensor faces an optical lens, and infrared rays in the environment enter the sensor through the optical lens and act on the infrared sensing element;
the bottom of the infrared sensing element of the sensor is fixed on a circuit substrate;
the circuit substrate is fixedly arranged at a first end of the sensor shell, and the lens is fixedly arranged at a second end, opposite to the first end, of the sensor shell;
preferably, the infrared temperature measurement system comprises determining the input power W and the current temperature t of the thermal resistance temperature sensor by adopting the following calculation formula pre Target temperature T target Is the relation of (1), namely:
T＝t target -t pre a formula 1;
where m is the mass of the metal frame, c is the specific heat capacity of the metal frame material, opt is the time required to reach the target temperature, k is the thermal conductivity of the metal frame, E is a relative height coefficient, and E is calculated by:
e=eβ·h, formula 3;
in formula 3, H represents the current flight level; beta is an adjusting coefficient, and is set by relevant technicians through experiments according to climbing capacity of the unmanned aerial vehicle;
preferably, the telescopic driving module comprises an elastic damping element and a vibration sensor; the elastic damping element is used for absorbing and relieving vibration and impact generated in the flight process of the unmanned aerial vehicle; the vibration sensor is used for monitoring and adjusting the telescopic range and the adjusting speed of the telescopic driving module in real time, and setting the acquired target object temperature value as an effective value after the vibration is smaller than a specified preset threshold value.
Embodiment two: this embodiment should be understood to include at least all of the features of any one of the preceding embodiments, and be further modified based thereon;
as shown in fig. 2, an embodiment of a unmanned plane body and each working module applied to the infrared temperature measurement system is exemplarily shown; as shown in the figure, a drone body 10 is shown, a telescopic drive module 13 mounted to the bottom of the drone body 10; the infrared temperature measurement module 11 and the image acquisition module 12 are combined to form a whole, and then are arranged on a driving part of the telescopic driving module 13, and move along the z-axis (namely the vertical axis) direction and rotate around the z-axis through a telescopic rod and a universal rotating shaft of the telescopic driving module 13;
further, the unmanned body 10 further includes a memory, a processor and a communication unit, which can be disposed in the control module 14, wherein:
the communication unit is used for establishing communication with the remote controller;
the memory stores a computer program that can be run on the processor; the processor, when executing the computing program, performs the steps of:
(1) The preparation stage:
deploying unmanned aerial vehicle: checking working parameters of the unmanned aerial vehicle body, the infrared temperature measuring module, the image acquisition module, the telescopic driving module and the control module, and confirming that the unmanned aerial vehicle body, the infrared temperature measuring module, the image acquisition module, the telescopic driving module and the control module are installed and work normally;
the remote controller is connected with: establishing communication connection between a remote controller and an unmanned aerial vehicle, and preparing to receive data and send a flight and temperature measurement instruction;
(2) And (3) flight stage:
taking off: starting the unmanned plane to lift the unmanned plane off and fly to a designated temperature measuring area;
navigation and positioning: positioning the unmanned aerial vehicle to a position above or at a proper position of a target object to be subjected to temperature measurement according to a preset flight route or a real-time control instruction;
(3) Temperature measurement preparation stage:
and (3) adjusting a telescopic driving module: according to the position and the size of the target object, the angles and the directions of the infrared temperature measuring module and the image acquisition module are adjusted through the telescopic driving module so as to obtain an optimal temperature measuring visual angle;
temperature correction: the temperature of the transmission window is kept stable by detecting the ambient temperature by using a thermal resistance temperature sensor and adjusting the input current of the sensor according to the ambient temperature in the infrared temperature measuring module;
(4) Temperature measurement execution stage:
infrared temperature measurement: an infrared temperature measurement module is used for acquiring an infrared thermal image of a target object and acquiring a temperature value of the target object;
image acquisition: synchronously capturing visible light images of the target object by using an image acquisition module;
(5) Data processing and display stage:
data fusion: fusing the infrared temperature data with the visible light image to generate a measurement image for displaying the temperature of the target object;
and (3) data transmission: transmitting the measured image and the temperature data to a remote controller through a communication module of the unmanned aerial vehicle;
display and analysis: displaying the measured image and the temperature data on a display device of the remote controller for analysis by an operator;
(6) Ending:
and (3) data storage: storing the collected data in a storage module of the unmanned aerial vehicle for subsequent analysis and recording;
in an exemplary embodiment, the method comprises performing at least one of the following image preprocessing on the measurement image: non-uniform correction, time domain denoising, dead pixel removal, fixed mode noise removal and temperature drift compensation;
in an exemplary embodiment, the processor when executing the program further implements the steps of:
performing at least one of the following on the preprocessed image: contrast stretching and detail enhancement;
in an exemplary embodiment, the remote controller further includes a display, configured to display the corrected measurement image to a user, so that the user can intuitively learn the appearance condition of the target object and the measured value of the body temperature of the target object with higher accuracy, so that the user can accurately record according to the data of the target object;
the present application also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor realizes the program steps of the above six working phases;
embodiments of the present application may take the form of a computer program product embodied on one or more readable media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having program code embodied therein. Computer-usable readable media include both permanent and non-permanent, removable and non-removable media, and information storage may be implemented by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer readable media include, but are not limited to: phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), erasable programmable read only memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Disks (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, may be used to store information that may be accessed by the computing device.
Embodiment III: this embodiment should be understood to include at least all of the features of any one of the preceding embodiments, and be further modified based thereon;
FIG. 3 schematically illustrates an assembled and exploded view of one embodiment of the infrared thermometry module 11; as shown, the infrared thermometry module 11 may include a package 102 surrounding the infrared sensor assembly; preferably, the protective shell can be made of various high polymer plastic polycarbonate, polyimide, polyphenylene sulfide, polymethyl methacrylate, polyurethane and other materials; in yet other exemplary embodiments, suitable rigid materials, such as genus light, etc., may be used;
further, the package 102 is used to protect the sensor housing 104 from the external environment; the sensor housing 104 may be made of stainless steel or most any other suitable rigid material; the optical lens 106 of the sensor may be mounted on top of the sensor housing 104; the optical lens 106 is transparent or may be made of silicon or other suitable transparent or translucent material;
further, a circuit substrate 108 is provided on an end of the sensor housing 104 opposite to the lens 106; in an exemplary embodiment, the circuit substrate 108 may be made of an aluminum substrate; however, most any suitable material may be used, such as a copper clad insulated metal substrate or polyimide, depending on the particular application; the thermal resistance temperature sensor 110 may be mounted or thermally bonded below the circuit substrate 108 such that temperature stabilization of various components, such as the circuit substrate 108, the optical lens 106, and the sensor housing 104, may be achieved by the thermal resistance temperature sensor 110;
the thermal resistance temperature sensor (RTD) is a unit analysis for measuring temperature, and the working principle of the thermal resistance temperature sensor is based on the characteristic that the resistance of metal changes along with the temperature, and the metal is usually made of pure platinum (Pt), nickel (Ni) or copper (Cu); RTDs are typically composed of one or more thin wires encapsulated in a ceramic or glass material to provide protection and insulation; RTDs can be used to measure a wide range of temperatures, e.g., from-200 ℃ to +850 ℃, and provide high accuracy measurements; in an exemplary embodiment, RTD elements having a range of applicability including-50℃to 50℃may be selected;
on the other hand, in the exemplary embodiment, the resistance-temperature relationship of the RTD is generally non-linear, with dedicated computing circuitry or software in the control module 14 to perform a resistance-temperature conversion or correction of the RTD to output the correct temperature value measured;
it should be noted that the infrared sensor is used for analyzing the temperature of the object by sensing the infrared signal emitted by the object; in order to reduce the influence of the surrounding environment on the infrared sensor, a protective shell and the like are required to be installed to protect the infrared sensor from environmental factors; however, materials in the path of the received infrared energy of the sensor, which cause temperature changes and affect the sensor, such as a protective housing, will cause offset errors in the measured data; for a traditional infrared temperature sensor, when the infrared sensor is subjected to thermal conditions (such as a large operating temperature reduction, a temperature change rate or a static thermal gradient in a sensing area, etc.), any infrared visible object in the path between the sensor assembly and the measurement target can transfer energy to the infrared sensor and block part of infrared heat energy emitted by the target object, which ultimately results in accurate and inefficient temperature measurement; on the other hand, the lens or window medium may undergo thermal expansion or contraction under temperature changes, which may cause a change in its shape or optical characteristics, thereby affecting the propagation and detection effects of infrared waves;
because of the resistance property of the RTD, the RTD can be used in a method for simultaneously measuring temperature and transmitting heat, is used for heating and preserving heat related to devices on the detection path of the infrared sensor, and the power input into the RTD is regulated by a setting circuit to maintain the required temperature;
in an exemplary embodiment, the infrared thermometry module 11 further includes a glass filler 112 fitted into the positioning hole of the circuit substrate 108, and the glass filler 112 may enhance the airtight seal in addition to the seal of the package 102 mounted on the circuit substrate 108;
in an exemplary embodiment, the metal wire 114 may be inserted into the circuit substrate 108 through the glass filler 112 when manufacturing the infrared temperature measurement module 11; preferably, a wire slot may be provided in the circuit substrate 108 and allows placement of the lead wires 116 for access to external circuitry; a bottom plate 118 may be mounted to the open end of the enclosure 102 to enclose the sensor components therein; preferably, the bottom plate 118 may have a peripheral shape that conforms to the open end of the package 102; in other aspects, a groove may be provided that conforms to the shape of the open end of the package 102 to provide a suitable hermetic seal;
further, the package 102 also includes a metallization frame, such as the metal frame 120; the metal frame 120 may be equipped with a second thermal resistance temperature sensor 122; preferably, the second thermal resistance temperature sensor 122 is a ceramic-based RTD; in one aspect, the thermal resistance temperature sensor 110 may detect temperature and provide heat to the circuit substrate 108 area; on the other hand, the second thermal resistance temperature sensor 122 may provide heat to the guard casing window region, as shown; it should be appreciated that the second thermal resistance temperature sensor 122 may provide heat to the metal frame 120, and the metal frame 120 may conduct heat around the window; by concentrating the heat on the window, the relevant device can be kept at a stable temperature, thereby enhancing the infrared measurement function.
While the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications can be made without departing from the scope of the invention. That is, the methods, systems and devices discussed above are examples. Various configurations may omit, replace, or add various procedures or components as appropriate. For example, in alternative configurations, the methods may be performed in a different order than described, and/or various components may be added, omitted, and/or combined. Moreover, features described with respect to certain configurations may be combined in various other configurations, such as different aspects and elements of the configurations may be combined in a similar manner. Furthermore, as the technology evolves, elements therein may be updated, i.e., many of the elements are examples, and do not limit the scope of the disclosure or the claims.
Specific details are given in the description to provide a thorough understanding of exemplary configurations involving implementations. However, configurations may be practiced without these specific details, e.g., well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail in order to avoid obscuring configurations. This description provides only an example configuration and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configuration will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.
It is intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that it is intended that it be regarded as illustrative rather than limiting. Various changes and modifications to the present invention may be made by one skilled in the art after reading the teachings herein, and such equivalent changes and modifications are intended to fall within the scope of the invention as defined in the appended claims.
Claims (8)
1. An infrared temperature measurement system using unmanned aerial vehicle to carry, its characterized in that, infrared temperature measurement system includes:
the unmanned aerial vehicle body is configured to carry each working module of the infrared temperature measurement system for flying;
the infrared temperature measurement module is configured to perform non-contact temperature measurement on the target object by adopting an optical signal based on an infrared band so as to obtain a temperature value of the target object;
an image acquisition module configured to acquire a visible light image, and generate a measurement image in which a temperature value of a target object is displayed in the visible light image by combining the visible light image with the temperature value of the target object obtained by the infrared thermometry module;
the telescopic driving module is fixed on the unmanned aerial vehicle body after being combined with the infrared temperature measuring module and the image acquisition module, and is configured to adjust the positions and the direction angles aimed by the infrared temperature measuring module and the image acquisition module;
the control module is configured to be communicatively coupled with the unmanned aerial vehicle body, the infrared temperature measurement module, the image acquisition module and the telescopic driving module, and perform data transmission with the above components;
the infrared temperature measurement module realizes internal dynamic temperature correction based on environmental factors through a built-in temperature correction structure; the infrared temperature measurement module includes:
an infrared sensor assembly including a sensor and a sensor housing;
a package encasing the infrared sensor assembly; the package has an open end and a closed end;
a metal frame, wherein the metal frame includes a transmissive window disposed in a closed end of the enclosure; the metal frame is provided with a thermal resistance temperature sensor around the transmission window, the thermal resistance temperature sensor is utilized to detect the ambient temperature of the infrared temperature measuring module, and the input current of the thermal resistance temperature sensor is regulated according to the ambient temperature, so that the thermal resistance temperature sensor heats, and the transmission window is kept at a preset temperature.
2. The infrared thermometry system of claim 1, further comprising:
the remote controller is configured to be in communication connection with the control module so as to receive feedback data of the unmanned aerial vehicle body, the infrared temperature measurement module, the image acquisition module and the telescopic driving module and implement issuing control instructions to the unmanned aerial vehicle body, the infrared temperature measurement module, the image acquisition module and the telescopic driving module;
the remote controller is provided with a display device for displaying the measurement image.
3. The infrared thermometry system of claim 2, wherein the package is a polymeric plastic.
4. The infrared thermometry system of claim 3, wherein the metallic frame is made of a metal or alloy material having a thermal conductivity above 150W/mK.
5. The infrared thermometry system of claim 4, wherein the sensor is of any one of the following types: far infrared sensor, near infrared sensor, refrigeration infrared sensor, uncooled infrared sensor.
6. The infrared thermometry system of claim 5, wherein the top of the infrared sensing element of the sensor is oriented towards an optical lens through which infrared light in the environment enters the interior of the sensor and acts on the infrared sensing element;
the bottom of the infrared sensing element of the sensor is fixed on a circuit substrate;
the circuit substrate is fixedly arranged at a first end of the sensor housing, and the lens is fixedly arranged at a second end, opposite to the first end, of the sensor housing.
7. The infrared thermometry system of claim 1, comprising determining the input power W to the thermal resistance temperature sensor and the current temperature t using the following calculations pre Target temperature T target Is the relation of (1), namely:
T＝t target -t pre a formula 1;
where m is the mass of the metal frame, c is the specific heat capacity of the metal frame material, opt is the time required to reach the target temperature, k is the thermal conductivity of the metal frame, E is a relative height coefficient, and E is calculated by:
e=eβ·h, formula 3;
in the formula 3, H represents the current flying height, and e is a natural constant; beta is an adjusting coefficient, and is set by relevant technicians through experiments according to climbing capacity of the unmanned aerial vehicle.
8. The infrared thermometry system of claim 7, wherein the telescoping drive module comprises an elastic shock absorbing element and a shock sensor; the elastic damping element is used for absorbing and relieving vibration and impact generated in the flight process of the unmanned aerial vehicle; the vibration sensor is used for monitoring and adjusting the telescopic range and the adjusting speed of the telescopic driving module in real time, and setting the acquired target object temperature value as an effective value after the vibration is smaller than a specified preset threshold value.
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Cited By (1)
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| CN118670539A (en) * | 2024-07-11 | 2024-09-20 | 北京波谱华光科技有限公司 | Infrared thermal imaging system for fan blade detection |
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