Device for realizing high-precision temperature measurement and measurement method

Abstract

The invention discloses a device for realizing high-precision temperature measurement, and the device comprises a temperature measurement device body, the outer surface of the temperature measurement device body is provided with a connection port, and one end, away from the temperature measurement device body, of the connection port is detachably provided with a transmission cable. A handheld rod is arranged at the end, away from the connecting port, of the transmission cable, a temperature probe is arranged in the handheld rod, and a storage box is arranged on the temperature measuring device body in a sliding mode. Through the detachable design of the connecting port and the transmission cable, and in cooperation with the storage box and the protection sponge, the problem of tedious storage caused by cable fixation of a traditional device is solved. The transmission cable can be independently detached and stored, so that winding interference during carrying is reduced; the storage box can integrate and store the cable, the handheld rod and other parts, the protection sponge effectively buffers impact, the high-precision temperature sensing element is prevented from being damaged due to collision, the maintenance cost is reduced, meanwhile, the durability of the device is improved, and the overall practicability is enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature measurement, in particular to a device and a measurement method for realizing high-precision temperature measurement. BACKGROUND

[0002] With the increasing demand for temperature measurement accuracy in biological and pharmaceutical reagent storage, industrial precision component detection and other scenarios, the portability, adaptability and durability of high-precision temperature measurement devices have become key requirements.

[0003] Currently, the temperature probe and the host of the traditional high-precision temperature measurement device are mostly fixedly connected, and the cable cannot be conveniently disassembled. Although the cable of some devices can be disassembled, it needs to be stored separately after use, which reduces the overall practicality of the device. Moreover, the length of the probe of the existing device is fixed, which cannot adapt to different depth or narrow space measurement scenarios (such as inside a reaction kettle or a refrigeration box interlayer), and the adaptability is limited. When measuring on site quickly, it is easy to produce operational interference and influence, which affects the temperature measurement result. SUMMARY

[0004] The purpose of the present application is to provide a device for realizing high-precision temperature measurement, which has a detachable transmission cable design to simplify storage, an adjustable probe length to adapt to multiple scenarios, and convenient operation, which can balance high-precision measurement and practical adaptability.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a device for realizing high-precision temperature measurement, comprising a temperature measurement device body, a connection port is provided on the outer surface of the temperature measurement device body, a transmission cable is detachably provided at the end of the connection port away from the temperature measurement device body, a hand-held rod is provided at the end of the transmission cable away from the connection port, a temperature probe is provided in the hand-held rod, a storage box is slidably provided on the temperature measurement device body, a return spring is fixedly installed in the inside of the storage box, the other end of the return spring is fixedly connected with the temperature measurement device body, a protective sponge is fixedly installed on the temperature measurement device body, and the protective sponge is used in combination with the storage box.

[0006] As a preferred scheme, a temperature display screen is provided on the temperature measurement device body, and an operation button group is provided on the temperature measurement device body, which is electrically connected between the temperature display screen.

[0007] As a preferred scheme, an extension rod is slidably provided in the inside of the hand-held rod, and one end of the extension rod is fixedly connected with the temperature probe.

[0008] As a preferred scheme, a connecting block is arranged on the handheld rod and is in a damping structure, the connecting block is fixedly connected with the extension rod, and a push block is fixedly connected with an end of the connecting block away from the extension rod and is attached to the outer surface of the handheld rod.

[0009] As a preferred scheme, a guide groove and a sliding groove are arranged on the handheld rod, the connecting block is used in cooperation with the guide groove, and the extension rod is used in cooperation with the sliding groove.

[0010] As a preferred scheme, a high-precision temperature sensing element is arranged inside the temperature probe.

[0011] Compared with the prior art, the device for realizing high-precision temperature measurement has the following beneficial effects: Firstly, the device has a detachable design of the connecting port and the transmission cable, cooperates with the storage box and the protection sponge, and solves the problem of complicated storage caused by the cable fixation of the traditional device. The transmission cable can be individually detached and stored, reducing the interference caused by winding during carrying. The storage box can integrate and store the cable, the handheld rod and other components, the protection sponge effectively buffers the impact, the high-precision temperature sensing element is prevented from being damaged due to bumping, the maintenance cost is reduced, the device durability is improved, and the overall practicability is enhanced.

[0012] Secondly, the device realizes flexible adjustment of the length of the temperature probe through the cooperation of the extension rod, the push block and the connecting block in the handheld rod (the guide groove and the sliding groove are used for auxiliary positioning), can adapt to different depth or narrow space measurement scenes such as the inside of a reaction kettle and the interlayer of a refrigeration box, and breaks through the applicability limitation of the traditional fixed-length probe. At the same time, the layout design of the temperature display screen and the operation button group simplifies the on-site operation process, reduces the operation interference during measurement, and ensures the accuracy of the data collected by the high-precision temperature sensing element.

[0013] In the second aspect, the application provides a circuit design method of a novel detachable microphone rod magnetic attraction conduction structure, including: The connecting port on the temperature measurement device body is assembled with the transmission cable to obtain a high-precision temperature measurement device. The temperature probe of the high-precision temperature measurement device is used to collect continuous temperature distribution data of a target temperature measurement region. Based on the continuous temperature distribution data, the temperature gradient characteristics and the steady-state temperature interval of the temperature measurement region are analyzed. The measurement accuracy requirement of the high-precision temperature measurement device is queried. The temperature gradient characteristics and the steady-state temperature interval are combined to plan a temperature tracking path corresponding to the measurement accuracy requirement. Based on the temperature tracking path, the button operation logic corresponding to the operation button group is set. The temperature measurement device is used to continuously measure the target temperature measurement region in combination with the temperature tracking path and the button operation logic, and a high-precision measurement result is obtained.

[0014] In a possible implementation manner of the second aspect, the analyzing of the temperature gradient feature and the steady-state temperature interval of the temperature measurement region based on the continuous temperature distribution data comprises: performing heat conduction delay correction on the continuous temperature distribution data to obtain standard temperature distribution data; performing isotherm extraction processing on the standard temperature distribution data to obtain a thermal field distribution profile; performing gradient field calculation processing on the thermal field distribution profile to obtain a heat flow direction atlas; performing region stability analysis processing on the heat flow direction atlas to obtain a thermal equilibrium state identifier; determining the temperature gradient feature corresponding to the temperature measurement region based on the thermal equilibrium state identifier; performing time-domain fluctuation analysis processing on the standard temperature distribution data to obtain a steady-state temperature interval corresponding to the temperature measurement region.

[0015] In a possible implementation manner of the second aspect, the planning of the temperature tracking path corresponding to the measurement accuracy requirement in combination with the temperature gradient feature and the steady-state temperature interval comprises: performing thermal constraint analysis on the measurement accuracy requirement to obtain a minimum temperature resolution unit; extracting a heat flow main axis in the temperature gradient feature to divide a thermal equilibrium sub-domain of the steady-state temperature interval; constructing a thermal field coverage network between the temperature gradient feature and the steady-state temperature interval based on the heat flow direction main axis and the thermal equilibrium sub-domain; performing mapping processing on the minimum temperature resolution unit and the thermal field coverage network to obtain an initial path topology; analyzing a probe movement attribute of the temperature probe, and performing optimization processing on the initial path topology based on the probe movement attribute to obtain a temperature tracking path.

[0016] In a possible implementation manner of the second aspect, the performing of the mapping processing on the minimum temperature resolution unit and the thermal field coverage network to obtain an initial path topology comprises: calculating a size matching degree between a triangular element of the thermal field coverage network and the minimum temperature resolution unit; analyzing a spatial coverage rate of the triangular element in the thermal field coverage network; detecting a distribution quantity of the minimum temperature resolution unit in the triangular element, and calculating a distribution density corresponding to the minimum temperature resolution unit based on the distribution quantity; generating a measurement node in the thermal field coverage network in combination with the size matching degree, the spatial coverage rate and the distribution density; The measurement node is subjected to path generation processing to obtain an initial path topology.

[0017] It can be seen that the high-precision temperature measurement device is obtained by assembling the connection port on the temperature measurement device body with the transmission cable, which ensures the integrity of the temperature measurement link. The temperature probe of the high-precision temperature measurement device can collect continuous temperature distribution data of the temperature measurement area to be processed, which can capture the overall temperature of the temperature measurement area, and facilitate the analysis of gradient characteristics and steady-state intervals, thereby providing a basis for subsequent accurate measurement. The temperature gradient characteristics and the steady-state temperature interval are combined to plan a temperature tracking path corresponding to the measurement accuracy requirement, which can ensure that the temperature probe moves along the optimal thermal trajectory, thereby improving the efficiency of the overall measurement. The temperature tracking path and the button operation logic are combined for continuous measurement, which can ensure that the measurement process completely covers the gradient change section and the steady-state section of the target area, and the corresponding operation steps and path nodes can reduce omission or misoperation, thereby improving the comprehensiveness of the measurement and the reliability of the results. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, together with the embodiments of the application, to explain the application, and do not constitute a limitation of the application. In the drawings: Figure 1 It is a perspective view of the application; Figure 2 It is a schematic view of the cross-sectional structure of the handheld rod of the application; Figure 3 It is a schematic view of the cross-sectional structure of the temperature measurement device body of the application; Figure 4 It is Figure 3 It is an enlarged schematic view of structure A in the middle; Figure 5 It is a measurement method flowchart of a device for realizing high-precision temperature measurement according to an embodiment of the application; Figure 6 It is a thermal field coverage network schematic diagram of a device for realizing high-precision temperature measurement according to an embodiment of the application executing a measurement method thereof; In the figure: 1, temperature measurement device body; 11, temperature display screen; 12, operation button group; 13, connection port; 14, transmission cable; 15, handheld rod; 151, guide groove; 152, sliding groove; 16, extension rod; 17, temperature probe; 18, push block; 19, connection block; 21, storage box; 22, protective sponge; 23, return spring. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0020] Please refer to Figures 1-4 As shown in the drawings, the present application provides a device for realizing high-precision temperature measurement, comprising a temperature measurement device body 1, the outer surface of the temperature measurement device body 1 is provided with a connection port 13, the end of the connection port 13 away from the temperature measurement device body 1 is detachably provided with a transmission cable 14, the end of the transmission cable 14 away from the connection port 13 is provided with a hand-held rod 15, the inside of the hand-held rod 15 is provided with a temperature probe 17, the temperature measurement device body 1 is slidably provided with a storage box 21, the inside of the storage box 21 is fixedly installed with a return spring 23, the other end of the return spring 23 is fixedly connected with the temperature measurement device body 1, the temperature measurement device body 1 is fixedly installed with a protective sponge 22, the protective sponge 22 is used in combination with the storage box 21, the temperature measurement device body 1 is provided with a temperature display screen 11, the temperature measurement device body 1 is provided with an operation button group 12, the operation button group 12 is electrically connected with the temperature display screen 11, the inside of the hand-held rod 15 is slidably provided with an extension rod 16, one end of the extension rod 16 is fixedly connected with the temperature probe 17, the hand-held rod 15 is slidably provided with a connecting block 19, and the connecting block 19 is a damping structure, the connecting block 19 is fixedly connected with the extension rod 16, and the end of the connecting block 19 away from the extension rod 16 is fixedly connected with a push block 18, the push block 18 is attached to the outer surface of the hand-held rod 15, the hand-held rod 15 is provided with a guide groove 151 and a sliding groove 152, the connecting block 19 is used in combination with the guide groove 151, the extension rod 16 is used in combination with the sliding groove 152, and the inside of the temperature probe 17 is provided with a high-precision temperature sensing element.

[0021] In the technical solution, the detachable cooperation of the connecting port 13 and the transmission cable 14 realizes the flexible separation of the temperature measuring device body 1 and the handheld rod 15, and solves the storage problem caused by the cable fixation of the traditional device. When in use, the personnel can quickly assemble the transmission cable 14 for measurement; when idle, the cable can be detached, and the components such as the handheld rod 15 and the transmission cable 14 are placed into the storage box 21, the reset spring 23 drives the storage box 21 to automatically close, and the protective sponge 22 cooperates to form a wrapping protection for the temperature probe 17 and the high-precision temperature sensing element, so as to avoid the precision deviation caused by collision and reduce the space occupation when carrying. The electrical connection of the temperature display screen 11 and the operation button group 12 makes the measurement data real-time visualized, and the integrated design of the operation button group 12 simplifies the calibration, mode switching and other processes, and reduces the field operation failure rate.

[0022] On the basis of embodiment one, the length adjustment of the temperature probe 17 is realized through the sliding cooperation of the extension rod 16 in the handheld rod 15 and the sliding groove 152, combined with the linkage action of the push block 18 and the connecting block 19: when the push block 18 is pushed, the connecting block 19 slides smoothly along the guide groove 151, driving the extension rod 16 to extend and retract synchronously, and the damping structure ensures the stability of the adjusted position, which can accurately adapt to different depth measurement scenes (such as refrigerator interlayer and internal reaction kettle). The low-loss signal transmission of the high-precision temperature sensing element and the transmission cable 14 meets the needs of strict scenes such as biological and pharmaceutical reagent storage and industrial precision detection, and improves the adaptability and measurement reliability of the device as a whole.

[0023] The working principle of the present application is: through the detachable setting of the connecting port 13 and the transmission cable 14, the personnel can quickly assemble the handheld rod 15 and the temperature measuring device body 1 when in use, and after the high-precision temperature sensing element in the temperature probe 17 senses the target temperature, the signal is transmitted to the device body 1 through the transmission cable 14; the electrical connection of the operation button group 12 and the temperature display screen 11 can realize the adjustment of the measurement parameters and the real-time display of the temperature data, and ensure that the personnel can intuitively obtain high-precision measurement results.

[0024] When it is necessary to adapt to different depths or narrow spaces, the push block 18 is pushed, the connecting block 19 slides along the guide groove 151, driving the extension rod 16 to extend and retract along the sliding groove 152, and the damping structure makes the extension rod 16 stable after adjustment, so as to change the extension length of the temperature probe 17, and meet the needs of diversified measurement scenes.

[0025] After use, the transmission cable 14 is detached, the storage box 21 is stretched downward, and then the components such as the handheld rod 15 and the transmission cable 14 are placed into the storage box 21, the reset spring 23 drives the storage box 21 to close, and the protective sponge 22 forms a buffer protection for the temperature probe 17 and the high-precision temperature sensing element, so as to avoid damage of the components caused by collision and improve the overall practicability of the device.

[0026] Referring toFigure 5 The application discloses a measuring method of a device for realizing high-precision temperature measurement. S1, the connecting port on the temperature measurement device body is assembled with the transmission cable to obtain a high-precision temperature measurement device, the temperature probe of the high-precision temperature measurement device is used to collect continuous temperature distribution data of a to-be-processed temperature measurement region, and the temperature gradient characteristics and the steady-state temperature interval of the temperature measurement region are analyzed based on the continuous temperature distribution data.

[0027] The application assembles the connecting port on the temperature measurement device body with the transmission cable to obtain a high-precision temperature measurement device, so that the integrity of the temperature measurement link is ensured, the temperature probe of the high-precision temperature measurement device is used to collect continuous temperature distribution data of a to-be-processed temperature measurement region, the temperature of the temperature measurement region can be captured, and the gradient characteristics and the steady-state interval are analyzed, thereby providing a basis for subsequent accurate measurement.

[0028] The application analyzes the temperature gradient characteristics and the steady-state temperature interval of the temperature measurement region based on the continuous temperature distribution data, so that the key region with rapid temperature change and the stable region can be locked, a target basis is provided for subsequent measurement path planning, redundant measurement operations are reduced, and the efficiency and the accuracy of the whole temperature measurement process are improved.

[0029] As an embodiment of the application, the analysis of the temperature gradient characteristics and the steady-state temperature interval of the temperature measurement region based on the continuous temperature distribution data comprises the following steps. The continuous temperature distribution data is subjected to heat conduction delay correction to obtain standard temperature distribution data. The standard temperature distribution data is subjected to isotheral line extraction processing to obtain a heat field distribution profile. The heat field distribution profile is subjected to gradient field calculation processing to obtain a heat flow direction atlas. The heat flow direction atlas is subjected to region stability analysis processing to obtain a heat balance state identifier. The temperature gradient characteristics corresponding to the temperature measurement region are determined based on the heat balance state identifier. The standard temperature distribution data is subjected to time domain fluctuation analysis processing to obtain a steady state temperature interval corresponding to the temperature measurement region.

[0030] The standard temperature distribution data is true temperature data obtained by correcting continuous temperature distribution data by heat conduction delay and eliminating the influence of response lag of the temperature measurement element; the isotherm is a curve formed by connecting points with equal temperature values in the standard temperature distribution data; the thermal field distribution profile is a profile map reflecting the temperature distribution form of the region formed by superimposing a plurality of isotherms; the heat flow direction map is a visual map representing the temperature gradient direction; and the thermal equilibrium state identifier is a state marker obtained by analyzing whether the heat flow direction is stable and whether the temperature difference tends to be constant.

[0031] Further, the continuous temperature distribution data can be corrected by delay by establishing a heat conduction equation (considering the material thermal conductivity coefficient and the probe response time) to obtain the standard temperature distribution data, and the specific steps are as follows: first, according to the slender structure (effective length 15 mm, diameter 2 mm) of the probe, for the heat transfer process of the temperature probe and the medium, a one-dimensional transient heat conduction equation (the radial heat transfer can be ignored due to the slender structure of the probe, and the axial heat transfer is the main one) is used, and the specific form is as follows , wherein represents the material density of the temperature sensing element of the probe, represents the specific heat capacity of the material, and k represents the material thermal conductivity coefficient, wherein the material parameters of the platinum resistance are obtained by manual search (density =21.45 , specific heat capacity (c=0.133 J / (g·℃), thermal conductivity coefficient (k=71.6 W / (m·℃)), the response time of the probe is calibrated by a standard constant temperature oil bath (temperature fluctuation ±0.01℃) experiment, and the time constant =0.8s is obtained, then the continuous temperature distribution raw data (sampling frequency 10 Hz, acquisition time 60s, covering each space point of the temperature measurement region) collected by the temperature probe is preprocessed, the Gaussian filter with =0.3 is used to remove the noise caused by electromagnetic interference, then the preprocessed data is substituted into the heat conduction equation, the temperature at the tip of the probe (x=0) is equal to the real-time temperature of the medium to be measured, and the tail end (x=15mm) is adiabatic as the boundary condition, the finite difference method is used to discretize the equation (time step t=0.01s, spatial step x=0.5mm), the delay error caused by the thermal inertia of the probe is eliminated by iterative calculation, and finally the corrected temperature data obtained by calculation is compared with the known temperature of the standard constant temperature oil bath, if the deviation is ≤ the measurement accuracy requirement (±0.05℃) of the device, represents the temperature at the axial position x of the probe at time t, the authenticity of the correction result is verified by the "standard heat source comparison method", the specific steps are: selecting a standard heat source with known temperature (such as a metrological authentication constant temperature oil bath, temperature fluctuation ≤±0.01℃, range (-50~200)℃; collecting continuous temperature distribution data of the standard heat source by the device (sampling frequency 10Hz, collection time 60s), and correcting to get "standard temperature distribution data" through the above heat conduction equation; comparing the corrected data with the actual temperature value of the standard heat source, if the deviation is ≤the required measurement accuracy of the device (such as ±0.05℃), the correction is effective; if the deviation is out of tolerance, adjust the probe response time parameter (such as the probe time constant 0.8s based on experimental calibration) and re-correct until the deviation requirement is met; the isotheral can be extracted at 1℃ intervals by linear interpolation algorithm to obtain the thermal field distribution profile, for example, in the biological medicine reagent refrigeration box interlayer temperature measurement scene, if the discrete points of the standard temperature distribution data are (x1, y1, 2℃), (x2, y2, 3.5℃), (x3, y3, 5℃), the temperature corresponding coordinate points at 1℃ intervals of 2℃, 3℃, 4℃, 5℃ are calculated between adjacent discrete points by linear interpolation algorithm, and then the coordinate points of the same temperature are connected in turn, and the thermal field distribution profile of the refrigeration box interlayer is formed, and the overlapping grid can be removed by temperature threshold layering and de-duplication algorithm; the temperature change rate of 5℃ / m can be obtained by calculating the ratio of the temperature difference (such as 2℃) of adjacent isotherals to the vertical distance (such as 0.2m), and the heat flow direction map can be generated in the direction of the normal line of the isotheral; the heat balance state identifier (such as "stable" "fluctuation") can be generated by analyzing whether the direction deviation is less than 5° and the temperature difference change is less than 0.5℃ in the heat flow direction map within 30 seconds; based on the heat balance state identifier, the area with concentrated heat flow direction and change rate greater than 3℃ / m is marked as a high gradient feature area, and the temperature gradient feature is obtained; the stable state temperature interval can be determined by statistically analyzing the temperature fluctuation amplitude (such as the fluctuation range of 23.5℃-23.7℃ in a certain area) within 10 minutes, setting the stable standard as the fluctuation amplitude ≤0.3℃, and screening out the areas meeting the conditions.

[0032] S2, query the measurement accuracy requirement of the high-precision temperature measurement device, combine the temperature gradient feature and the stable state temperature interval, plan a temperature tracking path corresponding to the measurement accuracy requirement, and set the button operation logic corresponding to the operation button group based on the temperature tracking path.

[0033] The application can ensure that the temperature probe moves along the optimal thermal track and improve the overall measurement efficiency by combining the temperature gradient feature with the steady temperature interval to plan a temperature tracking path corresponding to the measurement accuracy requirement, wherein the measurement accuracy requirement is the temperature detection allowable deviation range that the temperature measuring device needs to achieve, and the temperature tracking path is the probe moving track (such as a spiral progressive scanning route) planned in the temperature measurement area to meet the measurement accuracy. Further, the measurement accuracy requirement of the high-precision temperature measuring device can be inquired through the operation interface of the device (by operating the button group to call the built-in specification data on the temperature display screen).

[0034] As an embodiment of the application, the combination of the temperature gradient feature and the steady temperature interval to plan the temperature tracking path corresponding to the measurement accuracy requirement comprises: Thermally constraining and analyzing the measurement accuracy requirement to obtain a minimum temperature resolution unit; Extracting the heat flow main axis in the temperature gradient feature to divide the heat balance sub-domain of the steady temperature interval; Based on the heat flow direction main axis and the heat balance sub-domain, constructing a heat field coverage network between the temperature gradient feature and the steady temperature interval; Mapping the minimum temperature resolution unit and the heat field coverage network to obtain an initial path topology; Analyzing the probe moving attribute of the temperature probe, and based on the probe moving attribute, optimizing the initial path topology to obtain a temperature tracking path.

[0035] The minimum temperature resolution unit is the smallest measurable heat area that meets the measurement accuracy requirement; the heat flow main axis is a spatial continuous track in the temperature gradient feature with the maximum temperature change rate direction (such as a 50mm long heat conduction main line extending along the metal weld); the heat balance sub-domain is a continuous area with uniform thermodynamic state in the steady temperature interval; and the heat field coverage network is a triangulation grid formed by connecting the discrete points of the heat flow main axis and the vertices of the heat balance sub-domain. Specifically, for further intuitive understanding of the heat field coverage network in the application, refer to Figure 6 The figure shows the heat field coverage network in the measurement method executed by the device for realizing high-precision temperature measurement provided by the application. It should be noted that in the application, Figure 6The flowchart presented is only for the display of the measuring method performed by the device for achieving high-precision temperature measurement, and is not limited to the display of the measuring method performed by the device for achieving high-precision temperature measurement in actual different application scenarios; the initial path topology is a tree-shaped connected structure composed of the minimum temperature resolution unit center points; and the probe movement attribute is the extension limit of the extension rod, the movement stability of the push block drive, and the operation space limit of the handheld rod.

[0036] Further, the measurement accuracy requirement can be analyzed by a thermal constraint analysis method of a heat conduction equation characteristic scale to obtain a minimum temperature resolution unit, and a general calculation method is based on the measurement accuracy and thermal parameters, and three core inputs need to be determined: the measurement accuracy requirement , the thermal conductivity of the temperature measurement medium , and the probe response time , and the spatial size calculation formula of the minimum temperature resolution unit is: , , wherein the maximum temperature difference of the temperature measurement area is represented, the core input is the thermal conductivity of the temperature measurement medium (unit: W / (m·℃)), the core input is the probe response time (unit: s), which refers to the time for the temperature of the probe to rise from the initial value to the step temperature (63.2%), the core input is the measurement accuracy requirement (unit: (℃)), which refers to the maximum temperature measurement deviation allowed by the device, , the volume specific heat capacity of the probe material (unit: J / (m^3·℃)), which is obtained by multiplying the density and specific heat capacity of the probe temperature sensing element material, and reflects the heat storage capacity of the material, is a self-defined key parameter, the maximum temperature difference of the temperature measurement area (unit: ℃), which refers to the difference between the highest temperature and the lowest temperature in the temperature measurement range, and is determined by the actual application scenario. The above flow is parameter collection and confirmation, and step one is core input parameter acquisition: measurement accuracy requirement : determined according to the application scenario, such as biological and pharmaceutical reagent refrigeration scene =±0.05℃), industrial reaction kettle detection =±0.1℃), reference industry standards such as GB / T30735-2014 “Marine Observation Instrument Basic Requirements”, , the thermal conductivity of the temperature measurement medium is obtained by consulting “Engineering Material Thermophysical Property Handbook” (such as air =0.026W / (m·℃)) (25℃), water =0.607W / (m·℃) (25℃), industrial silicone oil =0.15W / (m·℃) (25℃), and the probe response time : Through experimental calibration (quickly move the probe from a (20℃) constant temperature environment into a (50℃) standard constant temperature oil bath (accuracy ±0.001℃), record the time it takes for the temperature to rise from (20℃) to (47℃) ((63.2%) step response value), repeat 3 times and take the average value. =0.8s, maximum temperature difference in the temperature measurement area :Determined by predicting the amount; Step 2: Substitute the formula parameters and make preliminary calculations: Known parameters: =0.026W / (m·℃) (air), =0.8s, =0.05℃, =2.85×10^6J / (m^3·℃), =5℃), substitute into the formula to calculate: The main axis of heat flow in the temperature gradient feature can be extracted using a gradient vector field streamline integral method (e.g., calculating the central trajectory of the integral curve cluster in the ▽T field). The thermal equilibrium subdomain of the steady-state temperature interval can be divided using an isothermal surface curvature mutation detection method (e.g., identifying boundary points with curvature changes greater than 0.15 mm⁻¹). Based on the main axis of the heat flow direction and the thermal equilibrium subdomain, a thermal field coverage network between the temperature gradient feature and the steady-state temperature interval can be constructed using a Delaunay triangulation criterion method (e.g., connecting axis points with spacing less than 5 mm to subdomain vertices). The minimum temperature resolution unit and the thermal field coverage network can be mapped using a quadtree spatial subdivision algorithm to obtain an initial path topology (e.g., recursively partitioning the grid until the unit size meets the standard). Based on the probe movement properties, the initial path topology is optimized to obtain a temperature tracking path. For example, based on the extension limit of the extension rod, the smoothness of the push block drive movement, and the operating space limitation of the handheld rod, the path segment that exceeds the extension limit of the extension rod is shortened, the node spacing is adjusted according to the smoothness of the push block movement to avoid drastic changes, and redundant path nodes that exceed the operating space of the handheld rod are eliminated.

[0037] The present invention sets the button operation logic corresponding to the operation button group based on the temperature tracking path, so that the functions of the operation buttons can be accurately matched with the measurement process, reducing operational errors, ensuring that measurements can be completed according to accuracy requirements in different temperature characteristic areas, and significantly improving the operator-friendliness of the device and the reliability of the measurement results. The setting of the button operation logic can be completed through the function configuration interface of the device to ensure that the function of each button matches the step of the tracking path one by one. Furthermore, based on the temperature tracking path, the button operation logic corresponding to the operation button group is set, the "start key" is set to trigger the starting operation of the temperature tracking path, the "switch key" corresponds to the conversion between the gradient segment and the steady-state segment in the path, and the "save key" is associated with the temperature data record of each path node.

[0038] Further, as an optional embodiment of the present application, the mapping of the minimum temperature resolution unit to the thermal field coverage network to obtain an initial path topology comprises: calculating the size matching degree between the triangular unit of the thermal field coverage network and the minimum temperature resolution unit; analyzing the spatial coverage of the triangular unit in the thermal field coverage network; detecting the distribution quantity of the minimum temperature resolution unit in the triangular unit, and calculating the distribution density corresponding to the minimum temperature resolution unit based on the distribution quantity; generating a measurement node in the thermal field coverage network in combination with the size matching degree, the spatial coverage and the distribution density; generating a path for the measurement node to obtain an initial path topology.

[0039] The size matching degree is the adaptability quantitative value between the geometric size of the triangular unit in the thermal field coverage network and the accuracy size of the minimum temperature resolution unit (for example, the ratio of the length of the triangular unit to the accuracy requirement of the resolution unit, and the ratio approaching 1 indicates the best adaptability); the spatial coverage is the coverage ratio of the triangular unit to the gradient region and the steady region in the thermal field coverage network (for example, the percentage of the triangular unit coverage area of the gradient region in the total area of the region); the distribution density is the number of minimum temperature resolution units contained in a unit triangular unit area (for example, 8 resolution units per square centimeter, reflecting the density of measurement accuracy); and the measurement node is a specific temperature measurement point in the triangular unit determined according to the above parameters (for example, the center of gravity of the triangular unit or the temperature gradient mutation point).

[0040] Further, the size matching degree of the triangular unit and the minimum temperature resolution unit can be calculated by a size matching algorithm (for example, a least square matching algorithm automatically calculates the size ratio of the two and outputs a matching coefficient between 0 and 1, and a coefficient of 1 indicates that the sizes are completely matched); the spatial coverage of the triangular unit can be analyzed by a region scanning tool (for example, a grid traversal scanning tool traverses the thermal field region at a grid accuracy of 1 mm x 1 mm, and counts the proportion of the number of grids covered by the triangular unit to the total number of grids); the distribution number of the resolution unit in the triangular unit can be detected by a density calculation module and converted into a distribution density (for example, a spatial grid density conversion module first counts the total number of resolution units contained in the triangular unit through image recognition technology, then calculates the actual area (unit: square centimeter) of the triangular unit based on the vertex coordinates of the triangular unit, and finally compares the total number with the area according to the area ratio to automatically calculate the number of resolution units per square centimeter, i.e. the distribution density); combined with the above parameters, a measurement node can be generated in the thermal field coverage network by a node distribution model (for example, a multi-parameter weighted distribution model assigns weights of 0.4, 0.3 and 0.3 to the matching degree, coverage and density respectively, and regions with a weighted score greater than or equal to 0.7 are preferentially marked with nodes); the measurement node is processed by a path optimization algorithm to generate a path (for example, a greedy neighbor search algorithm selects the nearest unconnected node to the current node to connect from the starting point based on the heat flow main axis to form a continuous path), and an initial path topology is obtained.

[0041] S3, in combination with the temperature tracking path and the button operation logic, using the temperature measurement device to continuously measure the target temperature measurement area to obtain a high-precision measurement result.

[0042] The application can ensure that the measurement process completely covers the gradient change section and the steady state section of the target area by combining the temperature tracking path with the button operation logic for continuous measurement, and the correspondence between the operation steps and the path nodes reduces omission or misoperation, and improves the comprehensiveness of the measurement and the reliability of the results, wherein the high-precision measurement result refers to a temperature data set that meets the preset accuracy requirement and covers all path nodes.

[0043] In combination with the temperature tracking path and the button operation logic, the target temperature measurement area is continuously measured by the temperature measurement device, and the corresponding specific processing steps are: starting the start key in the button operation logic to start measuring along the temperature tracking path, when reaching the first path node, adjusting the extension rod length by the push block to make the temperature probe fit the measurement position of the node, and operating the corresponding button to record the current temperature (the temperature display screen synchronously displays the real-time data); moving to the next node along the path, repeatedly adjusting the probe position and recording operation, and ensuring real-time data updating by observing the temperature display screen during the period; during the measurement process, continuously checking whether the probe is within the path range, and if not, correcting by adjusting the extension rod position by the push block; after completing the measurement of all path nodes, operating the save key to summarize all data; after the measurement is completed, comparing the recorded temperature data with the standard range of the steady-state temperature interval, checking whether the change trend of the gradient segment data is coherent, and ensuring that the deviation of all data is within the measurement accuracy requirement, so as to complete the acquisition of high-precision measurement results.

[0044] Importantly, it should be noted that the constructions and arrangements of the present application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in the application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be altered or varied. Accordingly, all such variations are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be changed or re-sequenced without departing from the scope of the application. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functions and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the application. Accordingly, the present application is not limited to the particular embodiments described but extends to the scope of the appended claims.

[0045] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual implementation can not be described (i.e., those unrelated to the best mode of practicing the application currently being considered, or those unrelated to enabling the application).

[0046] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A device for achieving high-precision temperature measurement, comprising a temperature measuring device body (1), characterized in that: The outer surface of the temperature measuring device body (1) is provided with a connection port (13), and the end of the connection port (13) away from the temperature measuring device body (1) is detachably provided with a transmission cable (14), and the end of the transmission cable (14) away from the connection port (13) is provided with a hand-held rod (15), and the interior of the hand-held rod (15) is provided with a temperature probe (17), and a storage box (21) is slidably provided on the temperature measuring device body (1), and a return spring (23) is fixedly installed inside the storage box (21), and the other end of the return spring (23) is fixedly connected to the temperature measuring device body (1), and a protective sponge (22) is fixedly installed on the temperature measuring device body (1), and the protective sponge (22) is used in conjunction with the storage box (21).

2. The device for achieving high-precision temperature measurement according to claim 1, characterized in that: A temperature display screen (11) is provided on the temperature measuring device body (1), and an operation button group (12) is provided on the temperature measuring device body (1), and the operation button group (12) is electrically connected to the temperature display screen (11).

3. The device for achieving high-precision temperature measurement according to claim 1, characterized in that: An extension rod (16) is slidably provided inside the handheld rod (15), and one end of the extension rod (16) is fixedly connected to the temperature probe (17).

4. The device for achieving high-precision temperature measurement according to claim 3, characterized in that: A connecting block (19) is slidably provided on the hand-held rod (15), and the connecting block (19) is a damping structure. The connecting block (19) is fixedly connected to the extension rod (16), and a push block (18) is fixedly connected to one end of the connecting block (19) away from the extension rod (16). The push block (18) is in contact with the outer surface of the hand-held rod (15).

5. The device for achieving high-precision temperature measurement according to claim 4, characterized in that: The hand-held rod (15) is provided with a guide groove (151) and a slide groove (152); the connecting block (19) is used in conjunction with the guide groove (151); and the extension rod (16) is used in conjunction with the slide groove (152).

6. The device for achieving high-precision temperature measurement according to claim 1, characterized in that: A high-precision temperature sensing element is provided inside the temperature probe (17).

7. A measurement method for a device for achieving high-precision temperature measurement, wherein the device for achieving high-precision temperature measurement according to any one of claims 1 to 6 performs the measurement method, characterized in that: The method comprises: Assembling the connection port on the temperature measuring device body with the transmission cable to obtain a high-precision temperature measuring device, using the temperature probe of the high-precision temperature measuring device to collect continuous temperature distribution data of the temperature measurement area to be processed, and analyzing the temperature gradient characteristics and steady-state temperature range of the temperature measurement area based on the continuous temperature distribution data; querying the measurement accuracy requirements of the high-precision temperature measurement device, planning a temperature tracking path corresponding to the measurement accuracy requirements in combination with the temperature gradient characteristics and the steady-state temperature range, and setting button operation logic corresponding to the operation button group based on the temperature tracking path; In combination with the temperature tracking path and the button operation logic, the temperature measuring device is used to continuously measure the target temperature measurement area to obtain high-precision measurement results.

8. The method according to claim 7, characterized in that The analyzing the temperature gradient characteristics and steady-state temperature range of the temperature measurement area based on the continuous temperature distribution data includes: Performing heat conduction delay correction on the continuous temperature distribution data to obtain standard temperature distribution data; Performing isothermal extraction processing on the standard temperature distribution data to obtain a thermal field distribution profile; Performing gradient field calculation processing on the thermal field distribution profile to obtain a heat flow direction map; Performing regional stability analysis on the heat flow direction map to obtain a thermal equilibrium state identifier; Determining a temperature gradient characteristic corresponding to the temperature measurement area based on the thermal equilibrium state identifier; The standard temperature distribution data is subjected to time domain fluctuation analysis processing to obtain a steady-state temperature range corresponding to the temperature measurement area.

9. The method according to claim 7, characterized in that The step of planning a temperature tracking path corresponding to the measurement accuracy requirement by combining the temperature gradient characteristics with the steady-state temperature range includes: Performing thermal constraint analysis on the measurement accuracy requirement to obtain a minimum temperature resolution unit; Extracting the heat flow main axis in the temperature gradient feature to divide the steady-state temperature interval into thermal equilibrium subdomains; Based on the main axis of the heat flow direction and the thermal equilibrium subdomain, a thermal field coverage network between the temperature gradient feature and the steady-state temperature range is constructed; Performing mapping processing on the minimum temperature resolution unit and the thermal field coverage network to obtain an initial path topology; The probe movement properties of the temperature probe are analyzed, and based on the probe movement properties, the initial path topology is optimized to obtain a temperature tracking path.

10. The method according to claim 9, characterized in that The mapping process of the minimum temperature resolution unit and the thermal field coverage network to obtain an initial path topology includes: Calculating the size matching degree between the triangular unit of the thermal field coverage network and the minimum temperature resolution unit; Analyzing the spatial coverage of the triangular unit in the thermal field coverage network; detecting the number of the minimum temperature resolution units distributed within the triangular unit, and calculating the distribution density corresponding to the minimum temperature resolution units based on the number of the distribution units; generating measurement nodes in the thermal field coverage network in combination with the size matching degree, spatial coverage rate and distribution density; Perform path generation processing on the measurement nodes to obtain an initial path topology.

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