CN213021954U

CN213021954U - Device for improving temperature measurement precision of thermal imager

Info

Publication number: CN213021954U
Application number: CN202020635416.1U
Authority: CN
Inventors: 贺登辉; 常壮; 郭鹏程; 黄锐; 张洁
Original assignee: Xian University of Technology
Current assignee: Xian University of Technology
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2021-04-20
Anticipated expiration: 2030-04-24

Abstract

The utility model discloses a device for improving thermal imager temperature measurement accuracy, including the base, at base top surface fixed mounting have a guide rail, be fixed with on the guide rail can follow the gliding rocking arm of guide rail, the rocking arm other end connects thermal imager fixed station, the thermal imager fixed station is equipped with multi-functional anchor clamps, multi-functional anchor clamps are used for fixing all kinds of infrared thermal imagers of different outward appearances, different sizes; the main control CPU equipment is arranged in the base, a neural network algorithm is arranged in the main control CPU equipment, a plurality of items of data collected by the thermal infrared imager are processed, a high-precision temperature measurement result is output, and the temperature measurement result is displayed through the displayer. The utility model discloses a can carry out the integrated analysis to a great deal of influence factor of thermal imaging system temperature measurement precision, utilize neural network algorithm to rectify thermal imaging system temperature measurement result, can show improvement thermal imaging system temperature measurement precision to can avoid changing original thermal infrared imager equipment, reduce the wasting of resources.

Description

Device for improving temperature measurement precision of thermal imager

Technical Field

The utility model belongs to the technical field of relate to thermal infrared imager temperature measurement, concretely relates to a device for improving thermal imager temperature measurement precision.

Background

The infrared thermal imager has the advantages of non-contact temperature measurement, portability, wide temperature measurement range and the like, and is widely applied to the fields of industry, agriculture, aerospace, military and the like. The temperature measurement of the thermal infrared imager plays an important role in various fields. The thermal imaging system is particularly important in the energy industry, for example, in a thermal power plant, the thermal imaging system can measure the flame temperature in a hearth and monitor the combustion condition in the hearth, so that the fuel ratio, the primary air volume and the secondary air volume are adjusted, the occurrence of coking events is favorably reduced, and fossil fuel is more favorably saved. In addition, the thermal imager can also measure the temperature of the blades in the steam turbine, monitors the heating state of each region of the blades in real time, provides guarantee for safety production and prolongs the service life of the unit. In the photovoltaic power station, an unmanned aerial vehicle is adopted to carry the thermal imager to monitor each unit photovoltaic panel in the area, and a fault photovoltaic panel is searched, so that the operation efficiency of the photovoltaic power station is improved. However, the thermal infrared imager is susceptible to the type of the object to be measured, environmental factors and surrounding high-temperature objects during temperature measurement, so that an error exists between the measured temperature and the real temperature of the thermal infrared imager, and the temperature measurement precision of the thermal infrared imager is reduced. At present, a great deal of research is carried out on the precision correction technology of the thermal infrared imager at home and abroad, a plurality of methods for improving the temperature measurement precision are provided, and the temperature measurement error of the thermal infrared imager is compensated from a plurality of aspects such as temperature measurement distance, environment high-temperature objects, surface emissivity of measured objects and the like. Although the methods have a certain effect on improving the temperature measurement precision of the thermal imager, the methods are mostly researched for independent influence factors, and according to the thermal infrared imager temperature measurement principle, all the influence factors can comprehensively act on the thermal infrared imager in the temperature measurement process, and all the factors have mutual coupling effect, so that the methods have certain limitation on the improvement of the temperature measurement precision.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a device for improving thermal imaging system temperature measurement precision, this system is under the condition of not changing current thermal imaging system, through gathering multiunit data and carrying to master control CPU equipment and optimize through neural network algorithm to reach the target that reduces the temperature measurement error.

The utility model adopts the technical scheme that the device for improving the temperature measurement precision of the thermal imager comprises a base, wherein a guide rail is fixedly arranged on the top surface of the base, a rocker arm capable of sliding along the guide rail is fixed on the guide rail, the other end of the rocker arm is connected with a thermal imager fixing table, and the thermal imager fixing table is provided with a multifunctional clamp used for fixing various thermal infrared imagers with different appearances and sizes; a main control CPU device is installed in the base, a neural network algorithm is built in the main control CPU device, a plurality of items of data collected by the thermal infrared imager are processed, a high-precision temperature measurement result is output, and the temperature measurement result is displayed through a display; the left end and the right end of the guide rail are provided with the limiters, so that the rocker arm is prevented from falling off due to overlarge moving range, and the rocker arm is a three-folding universal rocker arm.

The utility model is also characterized in that,

the multifunctional clamp is installed in thermal imager fixed station central position department, and the department installs ultrasonic ranging appearance directly over the multifunctional clamp, and the department installs the triangular lens under the multifunctional clamp, and photosensitive appearance, right side installation optical camera are installed in the left side of multifunctional clamp, and thermal imager fixed station back of the body side right side region department installs ambient temperature sensor, dorsal part left side regional department installation ambient humidity sensor, and the power supply of above equipment is provided by electrical power generating system.

The supporter is arranged on the top surface of the base, and the thermocouple thermodetector and the surface topography instrument are placed on the supporter.

The thermocouple thermometer is a high-precision large-measurement-range direct contact type thermometer.

The surface appearance is equipped with wireless transmission device, and the surface appearance is portable surface appearance.

And the infrared thermal imager, the ultrasonic range finder, the triangular lens, the thermocouple thermometer and the surface topography instrument transmit the acquired data to the master control CPU equipment through data lines.

The data line is arranged in the rocker arm, one end of the data line is connected with the output end of each device, and the other end of the data line is connected with the collection position of the master control CPU device.

The left end and the right end of the guide rail are provided with the limiters, so that the rocker arm is prevented from falling off due to the overlarge moving range.

The rocker arm is a three-folding universal rocker arm, so that the shooting position and angle can be accurately adjusted, and the optimal shooting condition is provided for the thermal imager.

The beneficial effects of the utility model are that, the utility model provides a pair of a device for improving thermal imaging system temperature measurement precision compares with prior art, the utility model discloses equipment such as ultrasonic ranging appearance, surface topography appearance, ambient temperature sensor, optical camera, ambient humidity sensor, sensitization appearance, triangular lens, thermocouple of accessible system installation measure each parameter that influences the temperature measurement precision, through main control CPU equipment processing data, utilize neural network algorithm to rectify the temperature measurement result, improve its temperature measurement precision, show final result through the display. On the one hand, the utility model system is simple, uses in a flexible way, and the result is reliable. On the other hand, this utility model is applicable to the thermal infrared imager of the vast majority on the market, can effectively reduce the required cost of improvement precision under the prerequisite of not changing the thermal imager.

Drawings

Fig. 1 is a schematic structural view of a device for improving temperature measurement accuracy of a thermal imager according to the present invention;

fig. 2 is the utility model relates to a device working principle block diagram for improving thermal imager temperature measurement precision.

In the figure, the device comprises a base 1, a power supply system 2, a main control CPU device 3, a guide rail 5, a rocker arm 6, a thermal imager fixing table 7, a multifunctional clamp 8, an ultrasonic range finder 9, a triangular lens 10, an optical camera 11, a light sensitive instrument 12, an ambient temperature sensor 13, an ambient humidity sensor 14, an article storage rack 15, a thermocouple thermometer 16, a surface topography instrument 17 and a display 18.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The device for improving the temperature measurement precision of the thermal imager is shown in fig. 1 and comprises a base 1, wherein an arc-shaped guide rail 5 is fixedly arranged on the top surface of the base 1, a rocker arm 6 capable of sliding along the guide rail 5 is fixed on the guide rail 5, and the rocker arm 6 and the guide rail 5 are matched to work to determine the temperature measurement position of the thermal imager; the other end of the rocker arm 6 is connected with a thermal imager fixing table 7, the thermal imager fixing table 7 is provided with a multifunctional clamp 8, and the multifunctional clamp 8 is used for fixing various thermal infrared imagers with different appearances and sizes; the base 1 is internally provided with a main control CPU device 3, a neural network algorithm is built in the main control CPU device 3, a plurality of items of data collected by the thermal infrared imager are processed, a high-precision temperature measurement result is output, and the high-precision temperature measurement result is displayed through a display 18.

Multifunctional clamp 8 installs in thermal imager fixed station 7 central point department, department installs ultrasonic ranging appearance 9 directly over multifunctional clamp 8, department installs triangular lens 10 directly under

multifunctional clamp

8, 8 left sides installation photosensitive drums 12 of multifunctional clamp, right side installation

optical camera

11, 7 dorsal part right sides region departments of thermal imager fixed station install ambient temperature sensor 13, dorsal part left side region department installation ambient humidity sensor 14, more the equipment power supply is provided by electrical power generating system 2.

An article shelf 15 is arranged on the top surface of the base 1, and a thermocouple thermodetector 16 and a surface topography instrument 17 are arranged on the article shelf 15.

The thermocouple thermometer 16 is provided with a wireless data transmission device, and the thermocouple thermometer 16 is a high-precision large-measurement-range direct contact type thermometer.

The surface appearance instrument 17 is provided with a wireless transmission device, and the surface appearance instrument 17 is a portable surface appearance instrument.

The infrared thermal imager, the ultrasonic range finder 9, the triangular lens 10, the thermocouple thermometer 16 and the surface topography instrument 17 transmit the acquired data to the main control CPU device 3 through data lines.

The data line is arranged in the rocker arm 6, one end of the data line is connected with the output end of each device, and the other end of the data line is connected with the collection position of the main control CPU device 3.

The ultrasonic range finder 9, the triangular lens 10, the light sensor 12 and the optical camera 11 are respectively arranged in the upper direction, the lower direction, the left direction and the right direction on the same side of the multifunctional clamp; an ambient temperature sensor 13 and an ambient humidity sensor 14 are respectively arranged on the left side and the right side of the back side of the multifunctional clamp 8; the power supply system 2 supplies power to all devices on the thermal imager fixing table 7 through electric wires arranged in the rocker arm 6, and the left end and the right end of the guide rail 5 are provided with the limiters to prevent the rocker arm 6 from falling off due to the overlarge moving range.

The rocker arm 6 is a three-folding universal rocker arm, so that the shooting position and angle can be accurately adjusted, and the optimal shooting condition is provided for the thermal imager.

The fixing mode of the multifunctional clamp 8 can be adjusted according to different thermal imagers in models and sizes, and stability of the thermal imagers is guaranteed in the shooting process.

The thermocouple thermometer 16 is provided with a wireless data transmission device, the acquired data is transmitted to the main control CPU device 3 through a wireless network, the thermocouple thermometer 16 transmits the measured object temperature to the main control CPU system, and the object temperature is displayed on the display 18 after data processing.

The surface appearance 17 is a portable surface appearance and is provided with a wireless data transmission device, and transmits the acquired object surface appearance information (roughness and the like) to the main control CPU device 3 through a wireless network.

The main control CPU device 3 is internally provided with a neural network algorithm, processes a plurality of collected data, outputs a temperature measurement result with higher precision, and displays the temperature measurement result through the display 18.

The utility model discloses according to the temperature measurement method of the device that improves thermal imager temperature measurement precision that fig. 2 shows, concrete operating procedure is as follows:

the method comprises the following steps: fixing the thermal infrared imager for testing by using a multifunctional clamp, connecting a data line to the data output end of the thermal infrared imager, and guiding the data line into the main control CPU equipment;

step two: judging whether a high-temperature object exists near a measured object, if so, respectively measuring the distance between the high-temperature object and the measured object and the distance between the high-temperature object and a thermal infrared imager by using an ultrasonic distance meter, measuring the temperature of the high-temperature object by using a thermocouple temperature measuring instrument, measuring the emissivity of the high-temperature object by using the thermal infrared imager, and transmitting the acquired data to a main control CPU (Central processing Unit) device;

step three: collecting environmental data influencing temperature measurement precision, measuring environmental temperature by using an environmental temperature sensor, shooting by using an optical camera to obtain pictures among temperature measurement channels of a thermal imager, carrying out image recognition to obtain atmospheric transmittance, measuring environmental humidity by using an environmental humidity sensor, measuring illumination intensity in the environment by using a photosensitive instrument, and transmitting the collected data to a main control CPU (central processing unit) device;

step four: the method comprises the steps of starting an infrared thermal imager, measuring the temperature of the outer surface of a measured object, simultaneously measuring the distance between the measured object and the infrared thermal imager by using an ultrasonic distance meter, measuring the surface roughness of the measured object by using a surface topography instrument, obtaining the emissivity of the measured object by combining materials used by the measured object, shooting the measured object by using a triangular lens to obtain the measurement visual angle of the infrared thermal imager, measuring the temperature of any point on the outer surface of the measured object by using a thermocouple temperature measuring instrument, and transmitting the collected data to a master control CPU device.

Step five: and processing the data by using a master control CPU (Central processing Unit) device, and calculating factors such as ambient temperature, ambient humidity, atmospheric attenuation, illumination intensity, measurement distance, emissivity of a measured object, an incidence angle, a nearby high-temperature object and the like by using a neural network algorithm to obtain a thermal infrared imager temperature measurement result with higher precision.

Step six: and displaying the temperature measurement result after comprehensive correction by using a display.

The above description is only one of the preferred embodiments of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a device for improving thermal imager temperature measurement precision which characterized in that: the thermal imager comprises a base (1), wherein a guide rail (5) is fixedly installed on the top surface of the base (1), a rocker arm (6) capable of sliding along the guide rail (5) is fixed on the guide rail (5), the other end of the rocker arm (6) is connected with a thermal imager fixing table (7), a multifunctional clamp (8) is installed on the thermal imager fixing table (7), and the multifunctional clamp (8) is used for fixing various thermal infrared imagers with different appearances and sizes; a main control CPU device (3) is installed inside the base (1), a neural network algorithm is built in the main control CPU device (3), multiple items of data collected by the thermal infrared imager are processed, a high-precision temperature measurement result is output, and the high-precision temperature measurement result is displayed through a display (18); both ends are equipped with the stopper about guide rail (5), prevent that home range is too big to lead to rocking arm (6) to drop, rocking arm (6) are the universal rocking arm of seventy percent discount.

2. The device for improving the temperature measurement precision of the thermal imager according to claim 1, wherein the multifunctional clamp (8) is installed at the central position of the thermal imager fixing table (7), the ultrasonic distance measuring instrument (9) is installed right above the multifunctional clamp (8), the triangular lens (10) is installed right below the multifunctional clamp (8), the photosensitive instrument (12) and the optical camera (11) are installed on the left side of the multifunctional clamp (8), the ambient temperature sensor (13) is installed on the right area of the back side of the thermal imager fixing table (7), the ambient humidity sensor (14) is installed on the left area of the back side, and power supply of the device is provided by the power supply system (2).

3. The device for improving the temperature measurement precision of the thermal imager according to claim 2, characterized in that a rack (15) is arranged on the top surface of the base (1), and a thermocouple thermometer (16) and a surface topography (17) are placed on the rack (15).

4. The device for improving the temperature measurement precision of the thermal imager according to claim 3, wherein the thermocouple temperature measuring instrument (16) is provided with a wireless data transmission device, and the thermocouple temperature measuring instrument (16) is a high-precision large-measurement-range direct contact type temperature measuring instrument.

5. The device for improving the temperature measurement accuracy of the thermal imager according to claim 3, wherein the surface texture analyzer (17) is provided with a wireless transmission device, and the surface texture analyzer (17) is a portable surface texture analyzer.

6. The device for improving the temperature measurement precision of the thermal imager according to claim 3, wherein the thermal infrared imager, the ultrasonic range finder (9), the triangular lens (10), the thermocouple thermometer (16) and the surface topography instrument (17) transmit the acquired data to the main control CPU device (3) through data lines.

7. The device for improving the temperature measurement precision of the thermal imager according to claim 6, wherein the data lines are arranged inside the rocker arm (6), one end of each data line is connected with the output end of each device, and the other end of each data line is connected with the collection position of the main control CPU device (3).