1997 results about "Infrared temperature measurement" patented technology

A non-contact infrared thermometer measures target temperatures remotely without requiring the ratio of the target size to the target distance to the thermometer. A collection means collects and focusses target IR radiation on an IR detector. The detector measures thermal energy of the target over a spectrum using micromechanical sensors. A processor means calculates the collected thermal energy in at least two different spectral regions using a first algorithm in program form and further calculates the ratio of the thermal energy in the at least two different spectral regions to obtain the target temperature independent of the target size, distance to the target and emissivity using a second algorithm in program form.

The invention relates to a fire-fighting robot for a transformer substation. The fire-fighting robot comprises a routing-inspection robot, a gas detection device, an infrared temperature measurement device, a fire extinguishing device and a main control computer, wherein the routing-inspection robot is arranged in the transformer substation, a routing-inspection route is painted at the ground of a working space of the routing-inspection robot, and a plurality of radio frequency cards for positioning are mounted at ground key points. The fire-fighting robot has the beneficial effects that the automatic routing inspection can be carried out based on routing-inspection route marks and a navigation device; the gas detection device is utilized for monitoring the characteristic gas concentration of an early-stage fire disaster in a production place of the transformer substation in real time and pre-warning the concentration overrun condition in a grading manner; the infrared temperature measurement device is utilized for collecting infrared temperature images of production devices, and pre-warning over-temperature conditions of the devices in a grading manner and positioning fault points; the fire extinguishing device is utilized for rapidly extinguishing the sudden fire, controlling the fire propagation in an initial stage and earning time for the rescue operation. Therefore, the precaution and the fighting of the early-stage fire disaster are strengthened, and the fire safety situation of the transformer substation is effectively improved.

The invention provides an adaptive body temperature monitoring method and system, and the method comprises the steps: employing an image collection device for collecting an image of a monitoring region, and obtaining a monitoring object and a corresponding position from the collected image; judging the face posture of a monitoring object in the face, and determining an available temperature measurement region of the monitoring object accordingly; employing a range finding device for collecting the distance between the monitoring object and an infrared temperature measurer; adjusting the infrared temperature measurer to a temperature measurement head and to point to the monitoring object; scanning the available temperature measurement region through the infrared temperature measurer, obtaining a body temperature measurement result of the corresponding monitoring object, and obtaining a body temperature result of an object according to the distance between the monitoring object and the infrared temperature measurer and the body temperature result. The invention provides a body temperature monitoring scheme, and the monitoring object does not need to make specific adaptive motion to adapt to the body temperature monitoring device. The method and system achieve the automatic judgment of whether the monitoring object accords with the measurement condition or not, and also can achieve the active adjustment of the position and posture of the infrared temperature measurer to actively adapt to the monitoring object, so as to achieve the dynamic non-contact monitoring.

This invention relates to a real-time calibration method and a device for infrared temperature test, which sets an infrared camera head used in collecting the infrared radiation signals of a tested object, sets a constant temperature source same to the infrared radiation rate of the tested object, in which, the source is on the same data collection surface with the tested object, the infrared radiation signals of the object and the constant temperature source are input into the computer to be processed to form a heat picture, at the same time, the real temperature value of the source is collected to get the temperature deviation value to calibrate the heat picture temperature data value of the tested object.

The invention is directed to a method of evaluating the signal of an infrared thermometer for measuring human body temperature, in which the infrared thermometer includes a probe adapted to receive thereon a probe cover or protective film sufficiently transparent to infrared radiation, and in which on a measuring operation performed with the probe cover or protective film in "installed" condition the signal is evaluated, so that a measuring operation is performed also when the probe cover or protective film is not installed, with an appropriate allowance being made for the consequently more intensive infrared radiation by different signal evaluation.

The invention belongs to the field of industrial robots, and particularly relates to an infrared temperature measurement track inspection robot. The infrared temperature measurement track inspection robot comprises a robot control system. The robot control system comprises a cradle head, a robot control cabinet, a track, a slide wire, a current collector, an infrared photoelectric sensor and a bogie. The robot control cabinet is installed on the upper surface of a longitudinal girder of the bogie. The cradle head is installed on the upper surface of the robot control cabinet. The track is of a T shape, wherein an infrared detection scale is arranged on the upper surface of the protruding side. The bogie is operated on the track. The slide wire connected with an external power source is arranged on one side face of the track. One end of the current collector slides on the slide wire and the other end of the current collector is electrically connected with the robot control cabinet. The infrared photoelectric sensor is of a U shape and is installed on an upright inside a side baffle of the robot control cabinet and transversely suspended above the track with the infrared detection scale. According to the infrared temperature measurement track inspection robot, control over accurate walking, localization and the like on the arranged track can be achieved, infrared temperature measurement and inspection are conducted, and the inspection quality is improved.

The invention discloses an infrared radiation precise temperature measuring method. The infrared radiation precise temperature measuring method comprises the following steps that: Step 1: ambient reflection temperature Tu is measured; step 2: ambient atmospheric temperature T alpha is measured through using a thermometer, and atmospheric transmittance tau alpha is calculated according to the distance between a measured object and infrared radiation temperature measuring equipment; step 3: the radiation temperature Tr of the measured object is measured through using the infrared radiation temperature measuring equipment; step 4: the emissivity epsilon n and the reflectivity Rho n of the measured object as well as the sum alpha of the emissivity and the reflectivity are determined, wherein the alpha <= 1; step 5: measurement values of T alpha, Tu and Tr are input to the infrared radiation temperature measuring equipment, such that the value I (T alpha) of an ambient atmospheric temperature signal, the value I (Tu) of an ambient reflection temperature signal and the value I (Tr) of a radiation temperature signal of the measured object are calculated, and the values are substituted into an actual object infrared temperature measuring formula which is mentioned in the description, such that the value I (T0) of the infrared radiation temperature measuring signal is calculated; and step 6: according to the calibration formula of a thermal infrared imager, conversion calculation is performed so as to obtain the authentic temperature T0 from the value I (T0) of the infrared radiation temperature measuring signal.

The invention discloses an infrared temperature measurement calibration method. The method is characterized by through introducing an environment temperature variation and a temperature measurement distance, compensating a temperature measurement deviation brought by a temperature drift, in a temperature-regulated box, continuously changing an environment temperature in the box and using a black body to carry out temperature calibration, and acquiring a first corresponding relation between an image gray scale capable of reflecting an infrared heat radiation energy size and the environment temperature; in addition, correspondingly acquiring a second corresponding relation between the image gray scale and a black body temperature and a third corresponding relation between the image gray scale and a temperature measurement distance; and finally, fitting the first corresponding relation, the second corresponding relation and the third corresponding relation through a BP neural network andcalculating temperature information of an infrared temperature measurement system heat radiation target through fitting. A problem that temperature measurement precision is low because of the temperature drift caused by an environment temperature change is overcome, infrared temperature measurement precision is increased, and a false alarm rate of fault detection is reduced.

A probe cover for an infrared (IR) thermometer having two distinct portions, one which is substantially rigid, and the other which is stretchable by at least two times to envelop the probe of the IR thermometer. The stretchable portion allows IR radiation to pass toward the optical window of the IR thermometer probe. The rigid portion of the probe cover is engaged with the probe during the installation process.

The invention discloses a medical infrared thermometer and a measurement compensating method of the medical infrared thermometer. The medical infrared thermometer is composed of an infrared temperature measurement module, an ultrasound distance measurement module, a power module and a signal processing unit. The infrared temperature measurement module is a TN9 infrared temperature measurement module and can output the target temperature and the environment temperature, the ultrasound distance measurement module, the signal processing unit and the infrared temperature measurement module are packaged in a shell, the power module is packaged on the lower portion of a handle, and the handle and the shell are integrally designed. The measurement compensating method of the medical infrared thermometer includes the steps of adopting a multivariate linear regression method to analyze and process test data, building a model of relations among a measuring distance, the environment temperature and the human body temperature to be measured, and using software programming to achieve human body temperature measurement compensation. According to the medical infrared thermometer and the measurement compensating method of the medical infrared thermometer, measuring errors are limited between -0.13 DEG C and 0.11 DEG C, good linearity and good reversibility are achieved, the measurement accuracy is high, the requirement for accurately measuring the temperature of the human body can be met, and the medical infrared thermometer and the measurement compensating method are suitable for clinical diagnosis.

The invention relates to a 3D infrared temperature monitoring method and a system for a substation. The monitoring system comprises a bureau device data center, a substation device data center, thermal infrared imagers, high-accuracy holders and visible light cameras. The bureau device data center is connected with the substation device data center through networks, the substation device data center is connected with the thermal infrared imagers through a switcher by network cable interfaces, the substation device data center is connected with the high-accuracy holders through communication interfaces and connected with the visible light cameras through coaxial cables. The monitoring method comprises that infrared picture two-dimensional planar data obtained through the thermal infrared imagers are converted into 3D spatial data, 3D substation virtual scenes are generated through 3D modeling, and device models are subjected to corresponding body surface temperature color rendering. According to the 3D infrared temperature monitoring method and the system for the substation, thermal infrared imager temperature measurement is combined with substation 3D modeling, and accordingly, device temperature conditions can be displayed for 360 degrees in all directions and real time, and accuracy and effectiveness of monitoring are improved.

The embodiment of the invention discloses a method for measuring the temperature of a target object by using a thermal infrared imager. The method comprises the following steps: calibrating the thermal infrared imager by using black bodies to obtain a temperature-gray level curve of the thermal infrared imager; calculating the tweak parameter of an infrared image by using the gray values of images obtained at different shutter temperatures and black body temperatures of the thermal infrared imager; correcting the infrared image of the target object by using the tweak parameter; performing deformation correction on the infrared image; determining the temperature value of the target object according to the gray value of each pixel point of the corrected infrared image and the temperature-gray level curve. According to the method, the influences of environmental factors on infrared temperature measurement are reduced greatly via the correction, and the temperature of a measured object can be measured accurately.

The invention provides an online automatic adjusting device with infrared temperature measurement and a method thereof. The device is provided with at least one black body arranged in the same shell as an infrared camera and a computer system and at least one reflector for change of the light path. The online automatic adjusting method comprises the following contents: (1) the user sets spacing interval between two adjustments according to the requirement and controls the reflector to rotate through the instruction of the computer according to the given time, therefore, the light path is changed and the light path between the black body and the infrared camera is communicated; (2) by comparing the real-time temperature of the black body with the measured temperature of the infrared camera, the deviation value is work out and the thermal imaging temperature value of the measured object is adjusted according to the deviation value. The invention is provided with the function of online automatic adjustment and is suitable for manufacturing portable equipments in particular. With the built-in black body, the invention is integrated with the function of measurement and adjustment and is suitable for long-term field measurement.

The invention relates to a laser processing detection method comprising: a. non-contact distance meter pre-measures the variable data of to-be-processed surface flatness of workpiece; b. according to the variable data of to-be-processed surface flatness of workpiece, the platform is moved to adjust the positions of laser focus head and infrared temperature-measuring instrument dynamically, so as to ensure the laser focus head and infrared temperature-measuring instrument focus head keep constant focal length with molten pond; c. the platform is swung to drive the temperature-measuring instrument to perform dynamic planar scanning, the center of the molten pond is re-calibrated so that the focusing and sampling point of the temperature-measuring instrument deviates along with the center of the molten pond. The invention adopts special instruments comprising the non-contact distance meter, the laser focus head, the infrared temperature-measuring instrument, and a central processor. The method in the invention has the advantages of accurate temperature monitoring for to-be-processed area and accurate control for laser spot size of to-be-processed area, simple method and equipment, and high efficiency.

A moisture meter with non-contact temperature measurement capability having a housing, a moisture-detecting device coupled to or contained at least partially in the housing, and having an output related to measured moisture parameters, a non-contact, optically-based temperature sensing device coupled to the housing, having an output related to sensed temperature, an output display contained in the housing, for displaying measurements to a user, and circuitry contained in the housing for processing both the moisture-detecting device output and the non-contact temperature sensing device output, and transmitting the processed outputs to the output display. The moisture-detecting device can be either one or both of a contact-type moisture-detecting device such as a pad on the rear side of the housing, and a pin-type moisture-detecting device in a hand-held probe, and electrically coupled to the circuitry in the housing through a cord.

The invention relates to an intelligent infrared thermal imaging device and inspection method for online inspection of power grid equipment, including an infrared temperature measurement back clip for collecting infrared data and an intelligent terminal, and the infrared temperature measurement back clip and the intelligent terminal communicate with each other; Relying on the huge equipment basic ledger system of the power production management system, electronic identification (RFID electronic tags, barcode labels) and location information (GPS, etc.) are used as means to identify the identity information of power grid inspection equipment, and infrared thermal imaging is used as The means of information collection, the inspection results are transmitted to the power production management system. The invention has a reasonable structure, is convenient to use, and improves the working efficiency of the power grid patrol inspection. Through information technology means (automatic identification of tags, automatic upload of inspection results, etc.), the workload of manual records and entry systems of inspection personnel is reduced, the consumption of working hours and the number of personnel are greatly reduced, and work efficiency is improved.

The invention proposes a method for correcting the resting result of infrared temperature measurement equipment, and various types of infrared temperature measurement equipment as a research object. The data measured by the infrared temperature measurement equipment is corrected manually, and the corrected data is close to the real temperature of the object. The method comprises the steps: testing the function variables corresponding to a model and a formula through presetting a testing module and a calculation formula; carrying out the fitting of the measured data through software, determining the coefficient and multiplier of the calculation formula, and forming a complete calculation formula; and calculating the accurate temperature of the target under the same measurement condition no matter how the function variables change. The method is suitable for the correction of the target temperature of the infrared temperature measurement equipment with various types of precision and applicable temperature ranges under the complex conditions. The method has obvious advantages for the measurement of the temperature of steel ingot. The method can overcome the temperature errors, caused by the temperature, distance and angle changes, of the infrared temperature measurement equipment, and achieves the purpose of measuring temperature quickly, accurately and safely.

The invention belongs to the technical field of nondestructive detection of foundry industry, and relates to method for testing nodularity and wall thickness of centrifugal nodular cast iron tubes through ultrasonic and without deconstructions. The technological characteristics are that a certified orientation relationship between a probe and a tested tube can be guaranteed through a structural design of a sound path and a probe frame. The probe frame is motioned compositely and mutually with the tested tube, and coupling medium in a coupling medium chamber guarantees a dynamic coupling of the ultrasonic. A transmitting mode is adopted to test sound speed of ultrasonic shear waves inside a detecting tube wall, simultaneously an infrared temperature probe is used to test temperature of the detecting tube wall, after the sound speed of the ultrasonic shear waves is corrected by the temperature, the nodularity of the tube wall can be calculated out under normal temperature by the sound speed of the ultrasonic shear waves. The sound speed of the ultrasonic shear waves is transformed into longitudinal wave velocity, and a mode of ultrasonic pulse reflection is used to test the thickness of the tube wall. An effect and a benefit of the invention are that two projects can be tested in one test, influences of the thickness and the temperature to the test of the nodularity can be overcome, and a dynamic test can be used to test the whole surface of the testing tube, which increases testing efficiency and coverage rate.

The invention discloses an Internet-of-Things-based intelligent mobile patrol inspection terminal which comprises a flat-plate control terminal, wherein a GIS map module, a wireless communication module, an infrared temperature measurement module, a task management module, an equipment patrol inspection management module, a data synchronization module, a report statistic analysis module, a patrol inspection personnel management module, a work ticket management module and an expert diagnosis module are arranged in the flat-plate control terminal. The invention provides the Internet-of-Things-based intelligent mobile patrol inspection terminal, which can precisely position a faulted location and monitor and guide inspection personnel in real time, and has a certain learning capacity.

The invention relates to an infrared temperature measuring device based on the ultrasound ranging temperature compensation. Stepping motors in horizontal direction and vertical direction, an infrared temperature measuring unit, an ultrasound ranging module, a laser indicator and a positioning switch are arranged on a holder mechanical structure; the holder mechanical structure is connected with a calibrating module through the laser indicator and a control module; a calibrated parameter storing module, a control system and calibrating module, a system positioning interface circuit and the ultrasound ranging module are respectively connected with a central processing unit (CPU); the infrared temperature measuring unit sends the detected temperature value signal to the CPU, CPU sends the value signal to an upper computer through a wireless communication interface module. The infrared temperature measuring device can perform non-contact online temperature measurement on the to-be-tested points distributed at every position of the space; the infrared temperature measuring device is high in precision and quick in measuring speed; the structure design is reasonable, the infrared thermometer and the accurate positioning technology are combined, therefore, the online monitoring of multi-point temperature of the space is realized, and the cost is saved.

The embodiment of the invention provides a control method for an intelligent air conditioner and the intelligent air conditioner and relates to the field of air conditioners. By the adoption of the control method for the intelligent air conditioner and the intelligent air conditioner, the problem that according to an air conditioner in the prior art, the relative positions of a user and the air conditioner cannot be accurately positioned, and consequentially accurate control over the air conditioner cannot be achieved is solved. The control method comprises the steps that an ultrasonic sensor and an infrared temperature measurement module are controlled to rotate horizontally for scanning, and the horizontal distance information output by the ultrasonic sensor and the user temperature information detected by the infrared temperature measurement module in an infrared detection area are obtained; the relative distance and relative angle between the user and the intelligent air conditioner are determined according to the user temperature information and the horizontal distance information, and spatial arrangement parameters include the position information of the intelligent air conditioner in a space; and the current operating parameter of the intelligent air conditioner is adjusted according to the spatial arrangement parameters of the space where the intelligent air conditioner is located, and the relative distance and relative angle between the user and the intelligent air conditioner. The control method is applied to the intelligent air conditioner.

The invention discloses an infrared temperature measurement detection method for detecting solder joint reliability of a circuit board, which belongs to the technical field of faulty soldering detection of solder joints and solves the problem that the prior method cannot detect the faulty solder point of which the appearance is normal. The infrared temperature measurement detection method comprises the following steps of: 1, concentrating an infrared laser beam emitted by an infrared laser device on a solder joint to be detected of the circuit board, using a thermal infrared imager to obtain a dynamic image of the solder joint to be detected and a dynamic image of a lead wire part of the solder joint to be detected, and getting temperature distribution curves of the solder joint to be detected and the lead wire part of the solder joint to be detected; 2, overlaying the temperature distribution curve of the solder joint with that of the lead wire part of the solder joint to be detected according to same proportion; 3, judging the overlaying result: when the two temperature distribution curves have same distribution trend, and the highest temperature points on the two temperature distribution curves are synchronous, judging that the solder joint to be detected is a qualified solder joint; otherwise, judging that the solder joint to be detected is unqualified. The infrared temperature measurement detection method is suitable for detecting the solder joint reliability of the circuit board.

The invention discloses a temperature measurement equipment, method and device. The equipment comprises an infrared temperature measurement module, an environment temperature measurement module and amicro processor, wherein the infrared temperature measurement module is used for measuring human body temperature according to an infrared signal radiated by a human body and sending acquired infraredtemperature measurement data to the micro processor, the environment temperature measurement module is used for measuring temperature of the surrounding environment of the human body and sending acquired environment temperature measurement data to the micro processor, the micro processor is used for constructing a temperature field compensation model and acquiring the human body temperature measurement result according to the temperature field model when receiving the infrared temperature measurement data and the acquired environment temperature measurement data. The equipment is advantaged in that the body temperature data of a measurement object can be acquired through the temperature field compensation model, measurement accuracy is high, the measurement time is short, efficiency is high, the measurement process is simple and convenient, and user experience is effectively improved.

The invention discloses a system for predicting the fatigue limit of a magnesium alloy member based on infrared thermal imaging, and a method thereof. The system comprises: fatigue tester jigs (1); a fatigue test piece (2) comprising a magnesium alloy base material and a welded joint test piece; a fatigue test control system (3); a fatigue test system (4) used for the fatigue test of the magnesium alloy base material and the welded joint test piece to obtain a magnesium alloy fatigue limit under a cycle frequency of 10<7 >; an infrared temperature measurement system (8) for obtaining the surface temperature change curve of the fatigue test piece (2) in the fatigue test process and recording the temperature change data of the fatigue test piece (2) in the fatigue process; and a comprehensive analysis system (5) applying origin software to compare the obtained magnesium alloy fatigue limit with a fatigue limit obtained through routine fatigue tests in order to judge the measurement accuracy. The system and the method can be used for estimating the dangerous point and the fatigue limit of a welding structure in service.

The invention discloses a fire-fighting and rescue robot system and a control method. The fire-fighting and rescue robot system comprises an upper computer, a fire-fighting robot, a rescue robot and a multi-shaft aircraft. The fire-fighting robot, the rescue robot and the multi-shaft aircraft conduct information interaction with the upper computer. The fire-fighting and rescue robot system further comprises a wall sensor unit conducting information interaction with the upper computer. The wall sensor unit comprises a flame sensor, a combustible gas sensor, an infrared temperature measurement sensor and a doppler displacement sensor. In the fire-fighting and rescue robot system, the fire-fighting robot, the rescue robot and the wall sensor unit are responsible for environmental monitoring, fire fighting and rescue in a building. The multi-shaft aircraft is responsible for image capture outside the building, and obtained data are comprehensive and have practical application and referable performance. Cooperative work between the robots is achieved through the fire-fighting and rescue robot system, a computer-computer communication work mode and a human-computer interaction work mode are included, the requirements in an actual fire scene are met, the work efficiency can be improved greatly, and an inestimable function is achieved on the conditions that quick reaction is achieved, thus property loss caused by a fire disaster is reduced, and trapped people are rescued.

The embodiment of the invention discloses a method and device for measuring a use's body temperature. On the conditions of receiving instructions for starting temperature measurement, an infrared temperature measurement and distance measurement sensor is started; when it is detected that the distance between the infrared temperature measurement and distance measurement sensor and the user part to undergo temperature measurement is within a preset distance, the temperature of the user part to undergo temperature measurement is measured through the infrared temperature measurement and distance measurement sensor; according to a preset algorithm, the temperature is converted into a concrete user's body temperature or the body temperature range, infrared temperature measurement is assisted through a camera, temperature measurement pictures are collected through the camera, the body part undergoing temperature measurement, the skin color, whether sweating or water drops occur and other characteristics of the skin are identified; after the infrared temperature measurement, detection data are followed up to perform correction and conversion into the human body temperature, the measurement accuracy is improved, and the use threshold of the more intelligent measurement method is reduced.

The invention discloses a temperature correction method for infrared temperature measurement, and an infrared thermal imager. The method completes the temperature correction through the following steps: obtaining the position vectors between N black bodies at different positions and an infrared thermometer, improving the correction precision through the black bodies at different positions, and providing a data source for the temperature correction; then, respectively measuring the temperatures of the black bodies by using a contact type temperature measuring sensor and the infrared thermometer, calculating the relative temperature differences of the black bodies, and based on the temperature differences and the spatial relationship between the black bodies and the infrared thermometer, incombination with preset parameters of the external environment such as temperature, humidity, wind speed, illumination conditions and the like, using a mathematical analysis technology to obtain correction parameters, and correcting the temperature measurement value of a measured object to complete temperature correction of the infrared thermometer. The high-precision constant-temperature controlof the black bodies is converted into real-time accurate monitoring of the temperature of the black bodies, so that the calibration cost is effectively controlled, and the temperature measurement accuracy is ensured.

The invention discloses power transformer fault intelligent diagnosis technology, method and device, and relates to power transformer fault intelligent diagnosis technology and method and the intelligent diagnosis device based on the technology and the method. The intelligent diagnosis device comprises a data acquisition and transmission part and a management and display part. The intelligent diagnosis device is characterized in that power transformer fault intelligent diagnosis technology and method comprise a dissolved gas in oil analysis and diagnosis technology, a partial discharge online monitoring and diagnosis technology, an infrared temperature measurement diagnosis technology, a vibration analysis and diagnosis method, a frequency response analysis and diagnosis method, a winding temperature indication diagnosis method and a low voltage impulse response test diagnosis method, and fault intelligent diagnosis is carried out. According to the invention, a multi-parameter state monitoring method is used, and multiple fault intelligent diagnosis technologies and methods are integrated; valuable data which can be used to diagnose a fault and find out the position are given; the cause of the defect is eliminated; the shutdown time and the cost are reduced; and the purposes of power transformer intelligent monitoring and intelligent diagnosis are realized.

The invention discloses a method for measuring influence of background factors to infrared temperature measurement. The method comprises the following steps of: memorizing calibrated experimental data into a software system for measuring the influence of the background factors to the infrared temperature measurement; starting a black body, an infrared thermal image component, an industrial personal computer and a measuring software system; acquiring and displaying a thermal image video though an image acquiring card by the software system after the block body is constant at a certain temperature T, adjusting the parameter of the infrared thermal image component, and memorizing the thermal image in the form of bmp after the thermal image is clear; opening the memorized thermal image, selecting a black body region in the thermal image, and reading the mean gray level of the black body by the system; calling a database to search the calibrated gray level corresponding to the T temperature; and obtaining the error between the mean gray level and the calibrated gray level, wherein the error reflects the degree of the influence of the background factors to the infrared temperature measurement. The method can quantificationally measure the influence of the background factors to the infrared temperature measurement when practically measuring the temperature, wherein in result can be used in the compensation of the temperature measurement to finally improve the accuracy of the temperature measurement.