3183 results about "Thermoscope" patented technology

The invention relates to a grid steel structure node failure diffusion prediction method, which comprises the following steps of: forming a failure inducement and evolution path model according to a connection form of a bolt-sphere node and a welding node, a stress transfer path, node local yield and fatigue accumulation factors; a diffusion logic of node failure-force flow redistribution-adjacent node stress concentration-chain reaction is constructed; nodes are regarded as middle points of the graph, rod pieces are regarded as edges, and propagation weights between the nodes are defined; the weight parameters are dynamically assigned based on material attributes, node connection types, spatial geometric positions and historical stress states; multi-source monitoring sensors including strain gauges, displacement meters, thermometers and accelerometers are arranged at key nodes of the grid structure, so that node states are sensed; in combination with real-time monitoring data, extracting strain rate change, vibration characteristics, frequency drift and residual deformation key characteristics of each node; a node health state feature vector set is constructed by using time sequence analysis, and the gradual degradation trend of nodes is reflected.

A floating thermometer with a disinfection device includes a shell, a temperature sensing device and a display device. An upper part of the shell is provided with a sealed first accommodating chamber, first accommodating chamber is arranged with a control device. A lower part of the shell is provided with a second accommodating chamber and a first through hole connected to the second accommodating chamber. The temperature sensing device is located on surface of the shell and electrically connected to the control device. The temperature sensing device is configured to be immersed in water to detect water temperature, generate an electrical signal, and transmit the electrical signal to the control device. The display device is located on upper surface of the shell and electrically connected to the control device. The control device receives the electrical signal and controls the display device to show temperature.

The invention relates to the technical field of spraying process control, and discloses a spraying process self-adaptive adjustment method based on temperature measurement. The method comprises the steps that target coating parameters and base material physical property data are obtained, and initial spraying control parameters are generated through a first intelligent calculation model in combination with historical process data and real-time environment monitoring data; when spraying is executed, heat distribution data of a spraying area are collected in real time through a temperature sensing device, and according to the difference between the heat distribution data and a preset target temperature interval, technological parameters are dynamically corrected through a first self-adaptive regulation and control algorithm; meanwhile, a machine vision system is used for capturing actual coating morphological characteristics, and after the actual coating morphological characteristics are compared with target parameters, excitation parameters are adjusted in a partitioned mode through a second self-adaptive regulation and control algorithm so as to optimize uniformity; and collecting whole-process data, comprehensively evaluating the whole-process data through the second intelligent calculation model to generate a process optimization instruction, and updating the first intelligent calculation model and the first self-adaptive regulation and control algorithm parameters according to the process optimization instruction.

The present invention relates to a Bluetooth food thermometer and an assembly thereof, where the Bluetooth food thermometer includes a shell in which a temperature measuring component is movably arranged; a fall resisting component is arranged between the temperature measuring component and the shell; the temperature measuring component includes a copper tube antenna and a first circuit board; a first end of the copper tube antenna is connected with the first circuit board through a fastener; and a second end of the copper tube antenna is electrically contacted with the shell. In the present invention, the fall resisting component is arranged between the temperature measuring component and the shell, so that the food thermometer can protect the temperature measuring component from different directions when falling; and, during assembly, the fall resisting component can position the temperature measuring component for easy assembly.

The invention relates to the technical field of textile printing and dyeing setting machines, and provides a data acquisition method and system for a temperature controller of a setting machine. The method comprises the following specific implementation steps: firstly, calculating an initial first temperature sampling frequency in a preheating stage through an environment temperature and a target temperature; then, calculating the temperature amplification in the temperature control area, predicting a temperature amplification vector at the next sampling moment in combination with a temperature state estimation equation, and controlling a first temperature sampling frequency in real time through a temperature sampling adaptive controller; thirdly, the initial second temperature sampling frequency of the shaping stage is calculated, and the second temperature sampling frequency is automatically adjusted according to the temperature change of the temperature control area and the heating power change rate through a self-adaptive fuzzy controller; and finally, acquiring temperature data in the temperature control area according to the temperature acquisition frequency controlled in real time, and judging whether to send out early warning or not. According to the invention, the sampling frequency can be dynamically adjusted according to the real-time temperature data in the preheating and setting stages of the setting machine, so that an efficient and accurate temperature control process is realized.

A delivery unit 15 is mounted on a vehicle 21 and is used to deliver the articles accommodated in a storage container 33 filled with a cooling gas. The delivery unit 15 includes a thermometer Se1 that measures a temperature in the storage container 33, a memory unit 53 that memorizes therein data of the measured temperature in chronological order, a quality-data generation unit 55a that generates quality data of articles based on temperature data acquired from the memory unit 53, a print-data editing unit 55h that edits print data relating to a quality certificate including a graphic image representing the quality in chronological order of the cooling environment in the storage container 33 accommodating articles therein during delivery based on a serial number of the article and the quality data, and a printer 27 that prints print data relating to the quality certificate on a recording medium.

The invention relates to the technical field of temperature control, and particularly discloses a micro-reactor real-time control system for fine chemical engineering, and the system comprises an acquisition module which calculates a standard temperature according to the temperature at a monitoring point, and periodically obtains the standard temperature in a preset acquisition period; the analysis module is used for calculating a temperature difference value, obtaining a maximum temperature difference value and obtaining a temperature change value; coordinate points are generated and fitted to obtain a fitted curve, and the total number of reference points on the fitted curve is counted; and the adjusting module is used for calculating the judgment value, determining whether to adjust the power of the temperature adjusting module or not according to the judgment value, and adjusting the power of the temperature adjusting module according to the fitting curve. According to the invention, the environment temperature in the microreactor can be kept stable, and the complexity of controlling the temperature in the pipeline is reduced.

The invention discloses a combined test method and device for a temperature field and a stress field of a tunnel in a severe cold region, and belongs to the field of tunnel engineering. The tunnel comprises a primary support and a secondary lining, the system comprises a data acquisition instrument, and a surface strain gauge, a thermometer, a temperature measurement beam, a heat conductivity probe, a wind speed sensor and a meteorological sensor which are respectively in communication connection with the data acquisition instrument, and the data acquisition instrument is arranged at the haunch of the tunnel; the surface strain gauge is arranged on the lining surface of the second lining; the thermometer is arranged on the inner side surface of the second lining; the temperature measuring beam is arranged in the primary support and the surrounding rock; the thermal conductivity probe is inserted into surrounding rock; the wind speed sensors and the meteorological sensors are arranged on second linings on the left side and the right side in the tunnel. According to the invention, the temperature field and the stress field of the surrounding rock lining can be monitored, the temperature measuring beam and the surface strain gauge are adopted to monitor the range of the freeze-thaw ring and the change of the frost heaving force, and data support is provided for researching the influence of the thermal-mechanical coupling effect on the cold region tunnel and the dynamic evolution of the tunnel engineering vulnerability.

The invention provides a safety check and real-time prediction linkage system and method for a hydrogen-doped natural gas pipeline network. The system comprises a digital twin module, a detection module, a hydrogen-doped pry module and a consumption prediction module, the detection module comprises a terminal user, a thermometer and a flow meter, the thermometer is used for collecting temperature data of the terminal user, the temperature data is transmitted to the digital twin module, the flow meter is used for collecting load data of the terminal user, and the load data is transmitted to the consumption prediction module; the use amount prediction module predicts the hydrogen-doped natural gas use amount of the user per hour in real time according to the data collected by the detection module; the hydrogen doping pry module controls the mixing ratio of hydrogen to natural gas according to the output result of the dosage prediction module; and the digital twin module checks the safety operation feasibility and the hydrogen doping ratio by calculating the physical property parameters of the hydrogen-doped natural gas. Accurate prediction, dynamic scheduling and safety checking of the natural gas and hydrogen consumption are achieved, and it is ensured that the energy use efficiency is improved.

The invention discloses an assembly type refrigerating machine room energy-saving monitoring system based on data analysis, and relates to the technical field of energy-saving control, and the system comprises an interval module which is used for dividing the space of a machine room into a plurality of monitoring intervals, and is bound with a structural unit; the excitation module is used for applying power disturbance to the structural unit to obtain structural excitation data; the identification module is used for generating a heat influence coefficient matrix according to the excitation data and the temperature change of the adjacent monitoring interval; and the calculation module is used for calculating a blind area temperature and outputting an estimated temperature and a covariance based on the heat influence coefficient matrix, the structure energy consumption data and the adjacent interval temperature. According to the invention, the space of the machine room is subjected to three-dimensional grid division through the interval module, and each monitoring interval is bound with the function nodes in the structure of the machine room, so that the temperature monitoring grid with the corresponding relation between the space and the structure is formed, the space expression precision of monitoring data is improved, and the monitoring efficiency is improved. And a structural support is provided for positioning and temperature compensation of a blind area position.

The invention relates to the technical field of wireless temperature measurement, and provides a wireless barbecue thermometer signal emission control method and a wireless barbecue thermometer. The signal emission control method comprises the following steps: determining whether the wireless barbecue thermometer is in a signal shielding state or not based on the change condition of the environment temperature under the condition of determining that the wireless barbecue thermometer is in a use state based on the food temperature and the environment temperature; and when the wireless barbecue thermometer is in the signal shielding state, adjusting the signal transmitting power of the power amplifier in a preset first power adjustment mode so as to increase the signal transmitting power of the wireless barbecue thermometer. By adopting the technical scheme, whether the wireless barbecue thermometer is in the signal shielding state or not can be judged according to the environment temperature change condition, and automatic adjustment of the signal transmitting power is realized in combination with the shielding state, so that the influence of signal shielding on signal transmission of the wireless barbecue thermometer can be reduced; and thus, the use experience of the user can be improved.

The invention discloses a fast steering mirror position precision real-time calibration system and method. According to the system, a temperature sensor is arranged on each motor of the fast reflecting mirror, the detection temperature of each motor of the fast reflecting mirror is measured in real time through the temperature sensors, a temperature cycle test is carried out in combination with a high-low temperature box and a theodolite, and the calibration temperature is calculated based on the detection temperature of each motor through a processing assembly; generating a calibration model according to the calibration temperature and the position of the fast steering mirror obtained by multiple tests; and finally, the position precision of the fast steering mirror is calibrated through the calibration temperature and the calibration model which are acquired in real time. Real-time detection and calibration can be realized, and errors can be further eliminated, so that the real-time performance is improved, and the position precision of the fast reflecting mirror is improved. The technical problems that the real-time performance is poor, and the position precision of the fast steering mirror is not high are solved.

The invention provides a surface thermometer calibration system. The surface thermometer calibration system comprises a surface heat source device, a control host, a temperature control thermometer, a reference surface thermometer and a standard thermometer, the surface heat source device comprises a glass cover, a constant-temperature disc heat source, an upper protection structure, an adjustable support and a cooling fan. The control host comprises a dual-channel high-precision thermodetector, a dual-channel program-controlled output voltage-stabilized power supply and a control module, and the control module is used for obtaining measurement results of the temperature control thermometer, the reference surface thermometer and the standard thermometer and dynamically adjusting the output voltage of the dual-channel program-controlled output voltage-stabilized power supply according to the measurement results. Temperature control of the constant-temperature disc heat source is achieved. According to the surface thermometer calibration system designed and developed by the invention, the reliability and the calibration efficiency of surface thermometer calibration can be remarkably improved, and the reliability of surface temperature value traceability is ensured.

The invention relates to the technical field of temperature control valve fault detection based on big data analysis, and discloses a temperature control valve fault detection method based on big data analysis. Acquiring and cleaning temperature data according to a set sampling interval; calculating a temperature difference in combination with a set temperature and verifying a baseline period sample; extracting a maximum temperature difference, a minimum temperature difference and an envelope width by using a sliding window in the baseline period, and determining a compensation constant; calculating a baseline oscillation coefficient and statistical characteristics based on window analysis; continuously extracting real-time oscillation coefficients during operation; dynamically generating a time-varying threshold value according to historical characteristics and real-time parameters; and comparing the real-time coefficient with a threshold value to judge a fault and generate a structured log, and finally uploading the structured log to a big data platform. Through systematic data preprocessing, multi-scale feature extraction and dynamic threshold adjustment, the method overcomes missing report and false report under the influence of a fixed threshold and noise, and realizes online closed-loop automatic fault early warning and log management.

The invention discloses a rolled piece temperature control system based on a steel rolling process, which relates to the technical field of steel rolling and comprises a detection module, a control module, an execution module and a cooling module, the detection module comprises infrared thermometer arrays, an ultrasonic thickness gauge, an electromagnetic flowmeter, a pressure transmitter and a thermal resistance thermometer, and the infrared thermometer arrays are used for being arranged in front of and behind a cooling section and respectively collecting initial temperatures before entering a cooling system. Through the self-adaptive PID algorithm, the finite difference heat conduction model and the Smith pre-estimation compensation strategy are combined, the problem of control delay caused by the large lag characteristic in the cooling process is solved, control parameters can be dynamically adjusted according to the rolling speed, the steel grade characteristic and the like, temperature adjustment better fits the actual working condition, and the control precision is improved. The phenomenon of supercooling or insufficient cooling in a traditional control mode is fundamentally avoided, and the uniformity and stability of the performance of rolled pieces are guaranteed.

A temperature calibration system includes: an inspection apparatus to adjust temperature of an inspection target in a placement part and inspect the inspection target; and a surface thermometer, and is configured to calibrate temperature sensors in the placement part. The inspection apparatus includes: a carriage to move the placement part in X-, Y-, and Z-axis directions; and a controller to perform a calibration process to measurement values of the temperature sensors. The surface thermometer is configured to contact a placement surface of the placement part and detect a surface temperature of the placement surface. The controller is configured to: control the carriage to contact the surface thermometer with a detection position of the placement surface of the placement part; detect the surface temperature of the detection position by the surface thermometer; and calibrate the measurement value of the temperature sensor corresponding to the detection position based on the surface temperature.

The invention provides a control system for preparing manganous-manganic oxide from impurity-containing manganese liquid. Comprising a synthesis kettle; the feeding metering pump set comprises a liquid caustic soda metering pump and a pre-synthesis liquid metering pump; the valve group comprises a discharge valve, a steam valve and a pure water valve; the pH meter is arranged on the synthesis kettle; a first flow meter; a second flow meter; the M01 stirring motor is arranged on the synthesis kettle and is used for mixing solutions in the kettle; the M02 stirring motor is arranged on the overflow liquid receiving tank; the air blower is arranged on a pipeline connected with the synthesis kettle; the first liquid level meter is arranged on the synthesis kettle; the second liquid level meter is arranged on the overflow liquid receiving tank; and the thermometer is arranged on the synthesis kettle and is used for monitoring the temperature of the solution in the synthesis kettle. The system further comprises a central controller. By means of the system, the feeding state of the synthesis kettle can be automatically regulated and controlled, monitoring, debugging and alarming of the preparation process are facilitated, meanwhile, feeding of feeding liquid is stable, the temperature of the synthesis kettle is accurately controlled, and the fluctuation range of the pH value is small.

The invention relates to the technical field of laboratory equipment, in particular to an incubator heating and cooling temperature detection system and method.The incubator heating and cooling temperature detection system comprises a temperature detection module, a temperature setting module, a temperature calculation module and a temperature control module; threshold data of the test box can be set through the temperature setting module, the temperature calculation module calculates the temperature data based on the threshold data to obtain calculation data, and the temperature control module controls the temperature of the test box based on the calculation data. According to the method, the temperature of the test box can be effectively detected and controlled through the arrangement of the temperature detection module, the temperature setting module, the temperature calculation module and the temperature control module, so that the problem that the temperature of an existing test box cannot be pre-adjusted is solved.

The invention relates to the technical field of industrial master machine multi-axis coordination, and particularly discloses an industrial master machine multi-axis coordination method, which comprises the following steps of: selecting thermomagnetic sheets with thermomagnetic coupling characteristics, respectively embedding the thermomagnetic sheets into key parts of corresponding motion axes of a multi-axis machine tool, and simultaneously installing a high-precision magnetic field sensor in a main shaft of the multi-axis machine tool, the receiving module is used for receiving a magnetic field vector of each motion axis in each monitoring time point; collecting the temperature of each motion shaft in each monitoring time point, and calculating the thermal deformation amount of each motion shaft corresponding to the next time point; therefore, each motion shaft is dynamically judged and analyzed, and finally, the position compensation of each motion shaft corresponding to the next time point is realized, so that the machining precision and efficiency of the multi-shaft machine tool are improved, and the reliability, maintainability and intelligent level of the system are enhanced. The application of the technology has important practical significance and development potential in the modern manufacturing industry, and is a necessary means for realizing efficient, precise and intelligent manufacturing.

A temperature measurement method according to the present invention comprises: a spectroscopic measurement step for measuring a spectroscopic radiation spectrum from a billet, said spectroscopic radiation spectrum including at least three or more wavelengths having different spectroscopic radiance at the same temperature; an acquisition step for acquiring a characteristic quantity of the surface of the billet at a measurement point of the spectroscopic radiation spectrum; a determination step for determining the form of the surface of the billet on the basis of the feature amount acquired in the acquisition step; and a selection step for selecting, on the basis of the determination result of the determination step, a temperature calculation method for calculating the temperature of the measurement point from the spectroscopic radiation spectrum measured in the spectroscopic measurement step.

Provided is a temperature measurement device for, in a situation where the temperature of a silicon wafer which is a measurement target is indirectly measured, removing, from actually measured radiance, the effects of radiance coming from a chamber member, and calculating the amount of change in the temperature of the measurement target. The temperature measurement device comprises: a chamber for accommodating a measurement target object; a heating unit; a chamber window at a position in the chamber opposite from the measurement target object; a temperature measurement unit for measuring the temperature of the measurement target object and the chamber window; and a computation unit for calculating the temperature of the measurement target object from detected values of the temperature measurement unit. The computation unit is provided with: a conversion unit for generating, from actually measured temperatures calculated from the detected values of the temperature measurement unit, conversion data pertaining to the amount of change in the temperature of the measurement target object corresponding to the amount of change in the temperature of the chamber window; a condition acquisition unit for acquiring a condition under which the measurement target object is heated; a detected value acquisition unit for acquiring a detected value of the temperature measurement unit; and a temperature correction unit for estimating the temperature of the measurement target object by using the conversion data to correct an actually measured temperature calculated from the detected value of the temperature measurement unit.

The utility model provides a small-size fiber bragg grating pressure ring, which comprises a pressure ring stress main body, an inner hole formed by penetrating through the middle part of the pressure ring stress main body, a plurality of fiber bragg grating strain gauges arranged on the outer wall of the pressure ring stress main body along the circumferential direction of the pressure ring stress main body, and a fiber bragg grating thermometer arranged on the outer wall of the pressure ring stress main body, the protection mechanism is arranged on the outer side of the pressure ring stress main body; wherein the stress main body of the pressure ring is of a cylindrical structure. According to the utility model, the stress main body of the pressure ring adopts the hollow cylindrical structure, and can be realized by adopting a standard pipe, so that the machining cost of the traditional I-shaped structure is reduced, and meanwhile, the requirements of the upper and lower protruding parts of the traditional I-shaped structure on the welding space of the fiber bragg grating strain gauge can be reduced; the height of the fiber bragg grating pressure ring is reduced and is lower than 50mm, so that the adaptability of the fiber bragg grating pressure ring under different working conditions is improved.

The invention discloses a diaphragm valve flow test system and method, and the system comprises a first test assembly and a second test assembly, and a first pressure measurement port of the first test assembly and a second pressure measurement port of the second test assembly are respectively communicated with a to-be-tested valve; a first test pipeline communicated with the first test assembly is provided with a circulation path in a first direction; a second testing pipeline communicated with the second testing assembly is provided with a circulation path in the first direction. The upstream and downstream pressure values of the to-be-tested valve can be accurately detected through the first pressure gauge and the second pressure gauge, and the gas flow value is detected through the flow meter and substituted into a calculation formula to obtain an accurate flow coefficient value; the upstream first testing assembly and the downstream pressure measuring device are arranged at a specific distance according to the pipe diameter of the communicating pipeline, and the accuracy of the pressure value can be effectively ensured through the limitation of the pipe diameter and the distance; the actual temperature value of the fluid in the test system pipeline is monitored through the thermometer, and the influence of the temperature on the test result is effectively reduced.

The invention discloses a temperature and emissivity joint inversion method for multispectral temperature measurement, and relates to the field of non-contact temperature measurement of high-temperature targets. In order to solve the defect that in the prior art, combined inversion of the emissivity cannot be realized under the condition that the emissivity does not need to be known in advance, the technical scheme provided by the invention comprises the following steps: establishing a multispectral temperature measurement model, constructing a temperature calculation model under each channel, and outputting a plurality of sub-objective functions for optimization; constructing a weighted objective function used for optimization solution; outputting a global optimal solution as an initial point; constructing an optimization model with a penalty function, and outputting the target temperature and the spectral emissivity; and performing simulation verification based on the inversion result, performing error evaluation by setting a typical emissivity curve and a real temperature, and outputting an algorithm precision index. The method is suitable for non-contact high-precision temperature and emissivity combined measurement of a high-temperature target in a complex spectrum environment.

The invention relates to the field of data processing, in particular to a rapid temperature change test box temperature control method and system, and the method comprises the steps: collecting the internal temperature and external temperature of a test box in real time; calculating the internal and external temperature change consistency of the local time period at the current moment; calculating a correction value of the internal temperature at the current moment by using the internal and external temperature change consistency; and presetting a gain parameter vector, calculating an adjustment value of the gain parameter vector at the current moment, inputting the adjustment value of the gain parameter vector at the current moment and an error between the correction value of the corresponding internal temperature and the target temperature in the test box into a PID controller, outputting a control signal, and performing temperature control on the test box according to the control signal. According to the invention, by adaptively adjusting the gain parameter, the overshoot caused by too fast system response speed and the oscillation phenomenon caused by the overshoot can be effectively avoided, so that the temperature change in the test box is more stable, and the stability of the temperature control process is ensured.

An electric spice grinder with digital thermometer is an apparatus that dispenses milled spices automatically and includes a digital thermometer that can be used to monitor the temperature of food products. The apparatus includes a grinder housing, a food thermometer, a grinder mechanism, a portable power source, and a controller. The grinder housing corresponds to the main structure that houses the rest of the components in a portable and ergonomic way. The food thermometer can be used to monitor the temperature of the desired food product separate from the grinder housing. The grinder mechanism corresponds to the motorized mechanism that dispenses a desired amount of milled spice at a desired grind level. The portable power source provides the voltage necessary to sustain the operation of the food thermometer, the grinder mechanism, and the controller. The controller enables the operational control of the food thermometer and the grinder mechanism.

The invention discloses a nuclear fuel pellet out-of-pile cracking in-situ monitoring system and method. The system comprises an experiment box, a sample table, a first thermometer, a second thermometer, a blue light source, a spectrometer, an infrared camera, an optical camera and a graphic server. The spectrometer divides the light of the light guide measurement channel into visible light and infrared light which are respectively irradiated to the optical camera and the infrared camera. Since the first temperature collected by the first thermometer and the second temperature collected by the second thermometer are more accurate temperatures, the infrared photo can be calibrated, and more accurate temperature distribution can be obtained. The cracking morphology of the pellet sample can be captured in real time by a picture shot by the optical camera, so that the temperature field of the infrared picture and the cracking morphology of the optical picture are synchronously matched, non-contact temperature-optical coupling in-situ measurement in a pellet sample out-of-pile heating experiment is realized, the influence of a measuring instrument on the cracking process of the pellet sample is reduced, and the measurement accuracy is improved. The research on the evolution mechanism of the cracking of the pellet sample under different thermal stress conditions is facilitated.

The utility model relates to a quantitative testing device for fly ash ammonia nitrogen substances, and relates to the field of fly ash detection devices. The device comprises a material containing box, a material containing container and an ammonia gas detector, the bottom face of the material containing box is provided with an opening, a material supporting piece is arranged at the opening of the material containing box, the vertical end face of one side of the material containing box is communicated with a gas inlet piece, a plurality of heating resistors are vertically fixed to the inner wall of the material containing box, and an electronic thermometer is fixed to the front end face of the material containing box; a gas guide pipe is vertically communicated and fixed to the top surface of the material containing box, a gas pump is communicated and assembled to the gas guide pipe, an absorption solution is injected into the material containing container, and an ammonia gas sensitive electrode is fixed to the top surface of the material containing container in a manner that the absorption solution is inserted into the top surface of the material containing container. The influence of the temperature on the concentration rule of ammonia volatilization is detected by adjusting the temperature, the influence of the ammonia on the concrete can be detected in the later period, meanwhile, the amount of the denitration fly ash added into the concrete is selected according to the measured ammonia concentration, and therefore the environmental protection property and durability of the concrete are guaranteed.

To measure the temperature of sample gas, such as combustion gas in a combustion furnace or exhaust gas flowing in a flue without using a thermocouple, and accurately measure the concentration of a gas component included in the sample gas.SOLUTION: A gas measuring device comprises: a laser beam source that irradiates sample gas with a laser beam; a photo detector that detects the laser beam transmitted through the sample gas; a radiation thermometer in which a temperature measuring direction is provided along an optical path of the laser beam; and a signal processing unit that calculates the concentration of a gas component included in the sample gas on the basis of a light intensity signal obtained from the photo detector and a temperature signal obtained from the radiation thermometer.SELECTED DRAWING: Figure 1

The invention discloses a test device and method for measuring residual gas of a coal sample based on a GC double-column method. The device comprises a high-purity hydrogen steel cylinder, a high-purity helium steel cylinder, a vacuum pump containing a vacuum gauge, a computer, and a liquid sealing coal sample tank, a sleeve type gas storage device and a gas chromatograph which are connected in sequence, a first heating thermocouple, an electromagnetic valve and a spherical grinding machine are arranged in the lower layer of the liquid sealing coal sample tank; a pressure gauge, a thermometer and a first flow sensor which are used for measuring gas are arranged at an outlet of the capacity-controllable sleeve type gas storage device; the gas chromatograph is provided with a sampling device, a double chromatographic column device, a double thermal conductivity detector, a second flow sensor and a temperature sensor which are connected in sequence; and a heating device is also arranged in the box body. According to the invention, double gas chromatographic columns and double thermal conductivity detectors are selected, the separation effect and detection effect of each component gas are more excellent, and the subsequently measured wave peak value and wave width are more accurate.