Efficient heating temperature control method for portable hot patching instrument

Abstract

The invention relates to the technical field of process control, in particular to an efficient heating temperature control method for a portable hot patching instrument. The method comprises the following steps: firstly, acquiring temperature data of a local material under each heating element at each acquisition moment and an expansion deviation probability of the local material in each preset direction, and then determining a critical expansion temperature of the local material under each heating element; and further acquiring an offset influence coefficient of the local material under each heating element at each acquisition moment, further determining an offset direction and an offset position of the local material under each heating element at the current moment, and finally regulating and controlling the heating temperature of each heating element based on the offset position. According to the invention, the PID control scheme of each heating element on the portable heat compensation instrument is dynamically adjusted by analyzing the expansion deviation condition of the material in the heating repair process, so that the temperature control deviation caused by the position change of the heating material is avoided, and the process control effect of the heating temperature is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of process control, and particularly relates to an efficient heating and temperature control method for a portable hot patching instrument. Background Art

[0002] A portable hot patching instrument is a device composed of a heat source, a temperature sensor, and a control system, mainly used for heating and repairing different types of materials; multiple independently temperature-adjustable heating elements are usually equipped on the heater of the portable hot patching instrument, and temperature sensors are set on each heating element. The PID controller in the configured process control software will also feedback and adjust the power according to the real-time temperature information of each heating element to ensure precise control of the heating temperature of different material areas.

[0003] In the prior art, the set temperatures of different heating elements may be different due to repair requirements. The material may also undergo different degrees of thermal expansion during the heating process due to its own properties. Uneven expansion may further cause the material to shift, resulting in a change in the material area corresponding to each heating element for heating. The temperature setting of the PID controller in the process control software is adjusted based on the initial heating area. Once the heating area changes, the original control parameters may no longer be applicable to the current heating area, thereby resulting in poor temperature control effect of the portable hot patching instrument. Summary of the Invention

[0004] In order to solve the technical problem of poor temperature control effect of the portable hot patching instrument in the prior art, the purpose of the present invention is to provide an efficient heating and temperature control method for a portable hot patching instrument, and the specific technical solution adopted is as follows:

[0005] Within a preset historical period at the current moment, obtain the temperature data of the local material under each heating element in the portable hot patching instrument at each acquisition moment;

[0006] At each acquisition moment, according to the spatial distribution of the heating elements and the difference between the temperature data of different heating elements, obtain the expansion offset probability of the local material under each heating element in each preset direction; according to the fluctuation change of the temperature data of the local material under each heating element, obtain the critical expansion temperature;

[0007] At each acquisition moment, according to the deviation of the temperature data of the local material under each heating element relative to the critical expansion temperature, and the heating duration up to each acquisition moment, obtain the offset influence coefficient of the local material under each heating element; at the current moment, according to the offset influence coefficients of the local materials under each heating element at all historical acquisition moments and the expansion offset probabilities in each preset direction, obtain the offset probability coefficients of the local materials under each heating element in each preset direction; screen out the offset direction of the local material under each heating element at the current moment from all preset directions according to the offset probability coefficients;

[0008] At the current moment, according to the temperature data and the critical expansion temperature of the local material under each heating element, combined with the corresponding offset direction and position distribution, obtain the offset position of the local material under each heating element; regulate the heating temperature of each heating element based on the offset position.

[0009] Further, the method for obtaining the expansion offset probability includes:

[0010] Taking any heating element as the target element, and taking the remaining heating elements except the target element as reference elements; at each acquisition moment, according to the spatial distance between the target element and each reference element and the difference in the temperature data between the corresponding local materials, obtain the expansion influence weight of the local material under each reference element on the local material under the target element;

[0011] Taking any preset direction as the direction to be analyzed; at each acquisition moment, taking the projection value of the pointing vector from the target element to each reference element in the direction to be analyzed as the expansion influence parameter, weighting the corresponding expansion influence parameter with the expansion influence weight, and taking the weighted result as the expansion offset sub-parameter of the local material under the target element under each reference element in the direction to be analyzed;

[0012] Integrate the expansion offset sub-parameters of the local material under the target element under all reference elements in the direction to be analyzed, and obtain the expansion offset probability of the local material under the target element in the direction to be analyzed at each acquisition moment.

[0013] Further, the method for obtaining the expansion influence weight includes:

[0014] At each acquisition moment, taking the negative correlation normalization value of the spatial distance between the target element and each reference element as the distance influence parameter, and taking the difference in the temperature data between each reference element and the corresponding local material of the target element as the temperature transfer parameter; fuse the distance influence parameter and the temperature transfer parameter to obtain the expansion influence weight of the local material under each reference element on the local material under the target element at each acquisition moment.

[0015] Further, the method for obtaining the critical expansion temperature includes:

[0016] Taking any acquisition moment within a preset historical period at the current moment as the target moment, and using the temperature data at the target moment as the target temperature; taking any heating element as the target element;

[0017] According to the fluctuation difference between the fluctuations of all the temperature data of the local material under the target element before the target moment and the fluctuations of all the temperature data after the target moment, obtaining the sub-confidence probability that the target temperature is the critical expansion temperature of the local material under the target element;

[0018] At the target temperature, synthesizing the sub-confidence probabilities of the critical expansion temperatures of the local materials under all heating elements to obtain the comprehensive confidence probability that the target temperature is the critical expansion temperature; screening out the critical expansion temperature from all the temperature data according to the comprehensive confidence probability.

[0019] Further, the method for obtaining the offset influence coefficient includes:

[0020] At each acquisition moment, using the serial number of the acquisition moment to weight the normalized result of the difference between the temperature data of the local material under each heating element and the critical expansion temperature, and taking the weighted result as the offset influence coefficient of the local material under each heating element.

[0021] Further, the method for obtaining the offset possibility coefficient includes:

[0022] Taking the normalized result of the offset influence coefficient of the local material under each heating element at each acquisition moment as the offset influence weight;

[0023] Using the offset influence weight to weight the expansion offset probability of the local material under the corresponding heating element at the corresponding acquisition moment in each preset direction, and taking the weighted result as the offset possible sub-coefficient of the local material under the corresponding heating element at the corresponding acquisition moment in each preset direction;

[0024] Synthesizing the offset possible sub-coefficients of the local materials under each heating element in each preset direction at all acquisition moments to obtain the offset possible coefficient of the local materials under each heating element at the current moment in each preset direction.

[0025] Further, the method for obtaining the offset direction includes:

[0026] Taking the preset direction corresponding to the maximum offset possible coefficient as the offset direction of the local material under the corresponding heating element at the current moment.

[0027] Further, the method for obtaining the offset position includes:

[0028] At the current moment, according to the preset expansion coefficient of the local material under each heating element, and the difference between the temperature data and the critical expansion temperature, combined with the difference between the offset directions of the local materials under different heating elements, obtain the offset value of the local material under each heating element in the corresponding offset direction;

[0029] According to the offset value and the offset direction, obtain the horizontal offset amount and the vertical offset amount; based on the horizontal offset amount and the vertical offset amount, combined with the initial position of each heating element, determine the offset position of the local material under each heating element.

[0030] Further, the method for obtaining the offset value includes:

[0031] Take any heating element as the target element, and regard all the other heating elements except the target element as reference elements;

[0032] If the temperature data of the local material under the target element at the current moment is lower than the critical expansion temperature, set the single-point offset value of the local material under the target element in the corresponding offset direction to 0; if the temperature data of the local material under the target element at the current moment is not lower than the critical expansion temperature, multiply the difference between the temperature data at the current moment and the critical expansion temperature by the preset expansion coefficient of the local material under the target element, and use the product as the single-point offset value of the local material under the target element in the corresponding offset direction;

[0033] Take the cosine value of the angle between the corresponding offset direction of each reference element and the corresponding offset direction of the target element as the additional offset weight, use the additional offset weight to weight the single-point offset value of the corresponding reference element in the corresponding offset direction, and use the weighted result as the additional offset value of each reference element to the target element; combine the additional offset values of all reference elements to the target element and the single-point offset value of the target element to obtain the offset value of the local material under the target element in the corresponding offset direction.

[0034] Further, the method for obtaining the horizontal offset amount and the vertical offset amount includes:

[0035] Take the cosine value of the angle between the corresponding offset direction of the target element and 0° as the horizontal reference weight, and take the sine value as the vertical reference weight; use the horizontal reference weight to weight the offset value of the target element to obtain the horizontal offset amount; use the vertical reference weight to weight the offset value of the target element to obtain the vertical offset amount.

[0036] The present invention has the following beneficial effects:

[0037] During a preset historical period at the current moment, the present invention obtains the temperature data of the local material under each heating element in the portable hot patching instrument at each acquisition moment, providing a data basis for subsequent analysis of the expansion and offset of the local material under each heating element; at each acquisition moment, the invention obtains the expansion and offset probability of the local material under each heating element in each preset direction, so as to analyze and determine the actual offset direction subsequently; then the invention determines the critical expansion temperature of the local material under each heating element, providing a reference for subsequent evaluation of the expansion and offset amount; further, the invention obtains the offset influence coefficient of the local material under each heating element at each acquisition moment, and then at the current moment, combines the expansion and offset probabilities of the local material under each heating element in each preset direction at all historical acquisition moments to obtain the offset probability coefficient of the local material under each heating element in each preset direction, thereby screening out the offset direction among all preset directions of each heating element to prepare for accurately estimating the offset position subsequently; finally, the heating temperature of each heating element is regulated based on the offset position. By analyzing the expansion and offset of the material during the heating and repair process, the present invention dynamically adjusts the PID control scheme of each heating element on the portable hot patching instrument, thereby avoiding temperature control deviation caused by the change of the heating material position and improving the process control effect of the heating temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0039] Figure 1 It is a flowchart of an efficient heating temperature control method for a portable hot patching instrument provided by an embodiment of the present invention;

[0040] Figure 2 It is a layout diagram of heating elements provided by an embodiment of the present invention;

[0041] Figure 3 It is a flowchart of a method for obtaining the offset position provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manner, structure, features and effects of an efficient heating and temperature control method for a portable heat mender. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs.

[0044] The following specifically describes the specific solution of an efficient heating and temperature control method for a portable heat mender provided by the present invention in conjunction with the accompanying drawings.

[0045] Please refer to Figure 1 , which shows a flow chart of an efficient heating and temperature control method for a portable heat mender provided by an embodiment of the present invention, specifically including:

[0046] Step S1, within a preset historical period at the current moment, obtain the temperature data of the local material under each heating element in the portable heat mender at each acquisition moment.

[0047] It should be noted that in the embodiments of the present invention, the efficient heating and temperature control of the portable heat mender is realized based on the PID control in the process control software configured therein. Here, only the method of adjusting the temperature of each heating element according to the expansion offset of the material within a period of time during the heating and temperature control process is described. The PID control process is a well-known technology and will not be elaborated further.

[0048] To precisely control the temperature of each heating element on the heater of the portable heat mender, an embodiment of the present invention first obtains the temperature data of the local material under each heating element at each acquisition moment within a preset historical period at the current moment, providing a data basis for subsequent analysis of the expansion offset of the local material under each heating element; among them, the preset historical period is a PID regulation cycle. The current moment can be regarded as the moment to be regulated, and the preset historical period is a regulation cycle, such as set to within the last five minutes. The implementer can also set it according to the actual application situation;

[0049] Specifically, when the portable heat mender heats and repairs the material, first set the target heating temperature of each heating element on the heater according to the repair requirements of the material, and at the same time, construct a coordinate system with the upper left corner of the heater as the coordinate origin to obtain the position coordinates of each heating element; then place the heater on the material for heating and repair, and the position coordinates of the local material under each heating element can be obtained; please refer to Figure 2, which shows a layout diagram of heating elements provided by an embodiment of the present invention;

[0050] Meanwhile, a thermocouple is provided on each heating element of the heater to collect the temperature of the local material under the heating element in real time; the acquisition frequency of the thermocouple is set to 10 hz; the implementer can also set the acquisition frequency according to actual needs, but it is necessary to ensure that the acquisition frequencies of all thermocouples are the same.

[0051] Step S2, at each acquisition moment, according to the spatial distribution of the heating elements and the difference between the temperature data of different heating elements, obtain the expansion offset probability of the local material under each heating element in each preset direction; according to the fluctuation change of the temperature data of the local material under each heating element, obtain the critical expansion temperature.

[0052] Considering that the material may undergo thermal expansion during the heating repair process, which may cause a certain degree of offset of the local material under each heating element, and the expansion offset usually has a certain directionality, generally from the high-temperature region to the low-temperature region; also considering that there is heat transfer between substances, for any local material, the higher the temperature of the surrounding local material, the stronger the heat transfer effect, and the greater the impact on the expansion of this local material; at the same time, heat transfer is also affected by distance, and heat transfer will gradually weaken as the distance increases; based on this, in the embodiment of the present invention, at each acquisition moment, the expansion offset probability of the local material under each heating element in each preset direction will be analyzed and evaluated to prepare for determining the offset direction of the local material under each heating element in the subsequent step.

[0053] Preferably, in an embodiment of the present invention, first take any heating element as the target element. Considering that the temperature of the local material under the surrounding heating elements will affect the expansion offset of the local material under the target element, the expansion influence weight can be obtained first; also considering that the local material under the target element usually expands and offsets in any direction around it, taking any direction as an example, combined with the position directions of the surrounding heating elements, analyze and evaluate the influence of the local material under the surrounding heating elements on the expansion offset of the local material under the target element in each direction, and then determine the expansion offset probability in combination with the expansion influence weight; the method for obtaining the expansion offset probability includes:

[0054] Take any heating element as the target element, and regard the remaining heating elements except the target element as reference elements; at each acquisition moment, according to the spatial distance between the target element and each reference element and the difference in temperature data between the corresponding local materials, obtain the expansion influence weight of the local material under each reference element on the local material under the target element;

[0055] Take any preset direction as the direction to be analyzed; at each acquisition moment, take the projection value of the pointing vector from the target component to each reference component in the direction to be analyzed as the expansion influence parameter, weight the corresponding expansion influence parameter using the expansion influence weight, and take the weighted result as the expansion offset sub-parameter of the local material under the target component under the corresponding reference component in the direction to be analyzed.

[0056] Integrate the expansion offset sub-parameters of the local material under the target component under all reference components in the direction to be analyzed to obtain the expansion offset probability of the local material under the target component in the direction to be analyzed at each acquisition moment.

[0057] Among them, in a preferred embodiment of the present invention, the method for obtaining the expansion influence weight includes: at each acquisition moment, take the negative correlation normalization value of the spatial distance between the target component and each reference component as the distance influence parameter, and take the difference in temperature data between each reference component and the corresponding local material of the target component as the temperature transfer parameter; fuse the distance influence parameter and the temperature transfer parameter to obtain the expansion influence weight of the local material under each reference component on the local material under the target component at each acquisition moment.

[0058] As an example, taking the target component as an example, take each 1° corresponding direction within the range of 0° - 360° centered on it as a preset direction, that is, there are a total of 360 preset directions for the expansion offset of the target component; the implementer can also adjust the number of preset directions according to the computing resources by himself / herself, which will not be elaborated here.

[0059] Taking the direction to be analyzed of the local material under the target component as an example, the calculation formula for the expansion offset probability is:

[0060]

[0061] Among them, Z is the symbol of the direction to be analyzed; i is the serial number of the acquisition moment; A is the serial number of the target component; m is the serial number of the reference component; M is the total number of reference components; is the expansion offset probability of the local material under the target component in the direction to be analyzed at the i-th acquisition moment; R(A, m) is the spatial distance between the target component and the m-th reference component; is the temperature data of the local material under the m-th reference component at the i-th acquisition moment; is the temperature data of the local material under the target component at the i-th acquisition moment; x m is the abscissa of the position coordinate of the m-th reference component; x A is the abscissa of the position coordinate of the target component; y m is the ordinate of the position coordinate of the m-th reference component; y A is the ordinate of the position coordinate of the target component; is the pointing vector from the target component to the m-th reference component; is the projection value of the pointing vector from the target component to the m-th reference component in the direction to be analyzed, and is also the expansion influence parameter; is the distance influence parameter; is the temperature transfer parameter; is the expansion influence weight of the local material under the m-th reference component on the local material under the target component at the i-th acquisition moment; is the expansion offset sub-parameter of the local material under the target component under the m-th reference component in the direction to be analyzed; cos() is the cosine symbol.

[0062] In the above formula, the spatial distance is reciprocally operated for negative correlation normalization and logical adjustment, so that the smaller the spatial distance, the larger the distance influence parameter; the higher the temperature of the local material under the reference component and the larger the temperature difference between it and the local material under the target component, the larger the temperature transfer parameter; then the distance influence parameter and the temperature transfer parameter are multiplied and combined, and the larger the product, the larger the expansion influence weight, indicating that the local material under the reference component has a greater influence on the expansion offset of the local material under the target component; the projection value of the pointing vector from the target component to each reference component in the direction to be analyzed reflects the component of the expansion influence of the local material under each reference component on the local material under the target component in the direction to be analyzed, that is, the expansion influence parameter in the direction to be analyzed; the expansion offset sub-parameter reflects the expansion influence of the local material under each reference component on the local material under the target component in the direction to be analyzed at each acquisition moment. Finally, the expansion offset sub-parameters of the local material under the target component in the direction to be analyzed by the local materials under all reference components are accumulated to obtain the expansion offset probability of the local material under the target component in the direction to be analyzed.

[0063] It should be noted that in other examples, the implementer can also adopt other negative correlation normalization means, such as using the spatial distance as the independent variable in the negative exponential function; other basic mathematical operations such as addition or weighted summation can also be used to fuse the distance influence parameter and the temperature transfer parameter, which are all prior arts and will not be elaborated here.

[0064] By changing the target component and the direction to be analyzed, the expansion offset probability of the local material under each heating component at each acquisition moment in each preset direction can be obtained, preparing for subsequent analysis to determine the offset direction.

[0065] Due to the inherent properties of the material, it usually expands only when it reaches the critical expansion temperature. Before the critical expansion temperature is reached, the internal stress and heat conduction effect of the material will cause large fluctuations in the temperature data. After the critical expansion temperature is reached, its internal stress and deformation are released to a certain extent, and the fluctuation of the temperature data will decrease. Based on this, the critical expansion temperature can be determined according to the fluctuation changes in the temperature data of the local material under each heating element, providing data preparation for the subsequent evaluation of the expansion offset of the local material.

[0066] Preferably, in one embodiment of the present invention, the method for obtaining the critical expansion temperature includes:

[0067] Taking any collection time within the preset historical period of the current time as the target time, taking the temperature data at the target time as the target temperature; taking any heating element as the target element;

[0068] Obtaining a sub-confidence probability that the target temperature is a critical expansion temperature of the local material under the target element according to a fluctuation difference between fluctuations of all temperature data of the local material under the target element before the target time and fluctuations of all temperature data after the target time;

[0069] At the target temperature, the sub-confidence probabilities of the critical expansion temperatures of the local materials under all heating elements are integrated to obtain the comprehensive confidence probability that the target temperature is the critical expansion temperature; based on the comprehensive confidence probability, the critical expansion temperature is screened out from all temperature data.

[0070] As an example, taking the target temperature and the target component as an example, the calculation formula of the sub-confidence probability is:

[0071] Where, T is the serial number of the target temperature; A is the serial number of the target element; WT A is the sub-confidence probability that the target temperature is the critical expansion temperature of the local material under the target element; l is the sequence number of the temperature data of the local material under the target element before the target time; L is the total number of temperature data of the local material under the target element before the target time; h is the sequence number of the temperature data of the local material under the target element after the target time; H is the total number of temperature data of the local material under the target element after the target time; T l is the lth temperature data; T h is the hth temperature data; μ1 is the mean temperature data of the local material under the target element before the target time; μ2 is the mean temperature data of the local material under the target element after the target time; ε is a very small non-zero positive parameter, which is taken as 0.01 in this example to prevent the denominator from being 0.

[0072] In the above formula, the deviation of each temperature data relative to the average level is specifically used to evaluate the fluctuation information of the temperature data. The numerator reflects the average volatility of the temperature data before the target moment, and the denominator reflects the average volatility of the temperature data after the target moment. When the numerator is larger and the denominator is smaller, it indicates that it more conforms to the temperature change law before and after critical expansion. The greater the possibility that the target temperature is the critical expansion temperature, and the higher the sub-confidence probability.

[0073] In other examples, the implementer can also use the normalized value of the difference between the variance of the temperature data before the target moment and the variance of the temperature data after the target moment as the sub-confidence probability; or can also evaluate the fluctuation situation by other means, which is the prior art and will not be elaborated here.

[0074] By changing the target component, the sub-confidence probability that the target temperature data is the critical expansion temperature of the local material under each heating element can be obtained; then the sum of the sub-confidence probabilities that the target temperature is the critical expansion temperature of the local material under all heating elements is used as the comprehensive confidence probability that the target temperature is the critical expansion temperature; further change the target temperature, obtain the comprehensive confidence probability that each temperature data is the critical expansion temperature, and then use the temperature data corresponding to the maximum comprehensive confidence probability as the critical expansion temperature.

[0075] Step S3, at each acquisition moment, according to the deviation of the temperature data of the local material under each heating element relative to the critical expansion temperature, and the heating duration up to each acquisition moment, obtain the offset influence coefficient of the local material under each heating element; at the current moment, according to the offset influence coefficients of the local materials under each heating element at all historical acquisition moments and the expansion offset probability in each preset direction, obtain the offset possibility coefficient of the local material under each heating element in each preset direction; screen out the offset direction of the local material under each heating element at the current moment from all preset directions according to the offset possibility coefficient.

[0076] Considering that in the PID regulation process, the longer the time, the closer to the stable regulation state, the lower the possibility that the temperature of the local material changes greatly, and the greater the possibility of approaching or exceeding the critical expansion temperature; and considering that the higher the temperature of each heating element exceeds the corresponding critical expansion temperature and the greater it is, the greater the possibility of expansion offset of the heating element and the greater the offset influence it receives; based on this, the offset influence coefficient of the local material under each heating element at each acquisition moment can be obtained, preparing for determining the offset direction by combining the expansion offset probabilities of the local materials under the heating elements in each preset direction at all acquisition moments.

[0077] Preferably, in an embodiment of the present invention, the method for obtaining the offset influence coefficient includes:

[0078] At each acquisition moment, using the serial number of the acquisition moment, weight the normalization result of the difference between the temperature data of the local material under each heating element and the critical expansion temperature, and use the weighted result as the offset influence coefficient of the local material under each heating element.

[0079] As an example, specifically perform linear normalization on the difference, multiply and combine the normalized value with the serial number of each acquisition moment. The larger the normalized value and the larger the serial number of the acquisition moment, it indicates that the temperature data has exceeded the critical expansion temperature and the temperature may have reached a stable state, and its offset influence on the surrounding heating elements is greater, that is, the offset influence coefficient of the local material under each heating element at each acquisition moment is greater; in other examples, the implementer can also adopt other normalization means.

[0080] After obtaining the offset influence coefficient of the local material under each heating element at each acquisition moment, it is possible to further combine the expansion offset probabilities of the local materials under each heating element at all acquisition moments in each preset direction, and comprehensively evaluate the offset probability coefficient of the local materials under each heating element in each preset direction, so as to prepare for screening the offset direction from all preset directions in the future.

[0081] Preferably, in an embodiment of the present invention, the method for obtaining the offset probability coefficient includes:

[0082] Take the normalization result of the offset influence coefficient of the local material under each heating element at each acquisition moment as the offset influence weight;

[0083] Use the offset influence weight to weight the expansion offset probability of the local material under the corresponding heating element at the corresponding acquisition moment in each preset direction, and use the weighted result as the offset possible sub-coefficient of the local material under the corresponding heating element at the corresponding acquisition moment in each preset direction;

[0084] Comprehensively combine the offset possible sub-coefficients of the local materials under each heating element at all acquisition moments in each preset direction to obtain the offset possible coefficient of the local materials under each heating element at the current moment in each preset direction.

[0085] As an example, take any heating element as the target element and any preset direction as the direction to be analyzed for analysis; the calculation formula for the offset possible coefficient is:

[0086] where Z is the symbol of the direction to be analyzed; i is the serial number of the acquisition moment; A is the serial number of the target element; N is the total number of acquisition moments within the preset historical period at the current moment; Pz A is the offset possible coefficient of the local material under the target element at the current moment in the direction to be analyzed; is the expansion offset probability of the local material under the target component in the direction to be analyzed at the i-th acquisition moment; is the offset influence coefficient of the local material under the target component at the i-th acquisition moment; is the offset influence weight; is the offset possible sub-coefficient of the local material under the target component in the direction to be analyzed at the i-th acquisition moment.

[0087] In the above formula, specifically, the offset influence coefficient of the local material under the target component at each acquisition moment is divided by the sum of the corresponding offset influence coefficients of the local material under the target component at all acquisition moments for normalization, and at the same time, the sum of the offset influence weights at all acquisition moments is also made to be 1; then the offset influence weight at each acquisition moment is multiplied and combined with the offset influence coefficient, and the sum of the products at all acquisition moments can be used to obtain the offset possible coefficient of the local material under the target component in the direction to be analyzed.

[0088] By changing the target component and the direction to be analyzed, the offset possible coefficients of the local materials under each heating element in each preset direction at the current moment can be obtained, and further the offset directions can be screened out from all the preset directions of each heating element.

[0089] Preferably, in an embodiment of the present invention, among all the preset directions of each heating element, the preset direction corresponding to the maximum offset possible coefficient is used as the offset direction of the local material under the corresponding heating element at the current moment.

[0090] Step S4, at the current moment, according to the temperature data of the local material under each heating element and the critical expansion temperature, in combination with the corresponding offset direction and position distribution, obtain the offset position of the local material under each heating element; regulate the heating temperature of each heating element based on the offset position.

[0091] After obtaining the offset directions of the local materials under each heating element, the approximate expansion amount of each heating element can be further evaluated according to the temperature information of each heating element, and further combined with its corresponding initial position and offset direction to determine its offset position at the current moment, so as to subsequently determine the new local materials under each heating element corresponding to the offset amount of the material, thereby updating the PID control scheme of each heating element for precise temperature control.

[0092] Preferably, in an embodiment of the present invention, the method for obtaining the offset position includes:

[0093] Please refer to Figure 3 , which shows a flowchart of a method for obtaining an offset position provided by an embodiment of the present invention, specifically including:

[0094] Step S301, at the current moment, based on the preset expansion coefficients of the local materials under each heating element, the difference between the temperature data and the critical expansion temperature, and combining the differences between the offset directions of the local materials under different heating elements, obtain the offset values of the local materials under each heating element in the corresponding offset directions.

[0095] Considering that for each material with thermal expansion characteristics, its expansion amount changes with temperature and expansion only occurs when the critical expansion temperature is exceeded; based on this, the expansion amount at the current moment can be evaluated by combining the inherent property of the local material under each heating element, i.e., its thermal expansion coefficient, further analyzing the offset amount in the offset direction, and finally evaluating the offset values of the local materials under each heating element by integrating the offset amounts of all heating elements.

[0096] In a preferred embodiment of the present invention, the method for obtaining the offset value includes:

[0097] Taking any heating element as the target element and regarding all the other heating elements except the target element as reference elements;

[0098] If the temperature data of the local material under the target element at the current moment is lower than the critical expansion temperature, set the single-point offset value of the local material under the target element in the corresponding offset direction to 0; if the temperature data of the local material under the target element at the current moment is not lower than the critical expansion temperature, multiply the difference between the temperature data at the current moment and the critical expansion temperature by the preset expansion coefficient of the local material under the target element, and use the product as the single-point offset value of the local material under the target element in the corresponding offset direction;

[0099] Taking the cosine value of the angle between the corresponding offset direction of each reference element and the corresponding offset direction of the target element as the additional offset weight, weighting the single-point offset value of the corresponding reference element in the corresponding offset direction by using the additional offset weight, and using the weighted result as the additional offset value of each reference element to the target element; integrating the additional offset values of all reference elements to the target element and the single-point offset value of the target element, and obtaining the offset value of the local material under the target element in the corresponding offset direction.

[0100] As an example, taking the target element as an example, the calculation formula for the single-point offset value is:

[0101] where A is the serial number of the target element; L A is the single-point offset value of the local material under the target element in the corresponding offset direction; β is the preset expansion coefficient of the local material under the target element; T A is the temperature data of the local material under the target element at the current moment; is the critical expansion temperature of the local material under the target element;

[0102] It should be noted that the preset expansion coefficient is an inherent property of the material and needs to be determined according to the material type; by changing the target element, the single-point offset value of the local material under each heating element in the corresponding offset direction at the current moment can be obtained; then, the additional offset value of each reference element to the target element is calculated.

[0103] The calculation formula for the additional offset value of each reference element to the target element is:

[0104] L m-A = cos(z A , z m ) × L m ; where A is the serial number of the target element; m is the serial number of the reference element; L m-A is the additional offset value of the mth reference element to the target element; z A is the offset direction of the target element; z m is the offset direction of the mth reference element; cos(z A , z m ) is the additional offset weight; L m is the single-point offset value weighting of the mth reference element in the corresponding offset direction.

[0105] Finally, the offset added values of all reference elements to the target element and the single-point offset value of the target element are accumulated, and the accumulated value is used as the offset value of the local material under the target element in the corresponding offset direction; by changing the target element, the offset value of the local material under each heating element in the corresponding offset direction can be obtained.

[0106] Step S302: Obtain the horizontal offset and the vertical offset according to the offset value and the offset direction; based on the horizontal offset and the vertical offset, and combined with the initial position of each heating element, determine the offset position of the local material under each heating element.

[0107] In a preferred embodiment of the present invention, the method for obtaining the horizontal offset and the vertical offset includes:

[0108] Taking the cosine value of the angle between the corresponding offset direction of the target element and 0° as the horizontal reference weight, and taking the sine value as the vertical reference weight; weighting the offset value of the target element with the horizontal reference weight to obtain the horizontal offset; weighting the offset value of the target element with the vertical reference weight to obtain the vertical offset.

[0109] As an example, adding the horizontal offset to the abscissa of the initial position of each heating element can obtain the abscissa of the offset position; similarly, the ordinate of the offset position can be obtained, and then the offset position of the local material under each heating element at the current moment can be determined.

[0110] Finally, based on the offset positions of the local materials under each heating element at the current moment, the new local materials corresponding to each heating element after the material offset can be re-determined, and then the PID control target temperature, i.e., the heating temperature, of each heating element can be reset in combination with the repair requirements of the materials, so that the process control software can achieve precise temperature control and meet the ideal repair requirements.

[0111] It should be noted that PID control is an existing technology well-known to those skilled in the art and will not be elaborated here.

[0112] In summary, the present invention first obtains the temperature data of the local materials under each heating element at each acquisition moment, as well as the expansion offset probability in each preset direction, and determines the critical expansion temperature of the local materials under each heating element; then obtains the offset influence coefficient of the local materials under each heating element at each acquisition moment, and further determines the offset direction and offset position of the local materials under each heating element at the current moment. Finally, the heating temperature of each heating element is regulated based on the offset position. By analyzing the expansion offset of the material during the heating repair process, the present invention dynamically adjusts the PID control scheme of each heating element on the portable hot mender, thereby avoiding temperature control deviation caused by the change in the position of the heating material and improving the process control effect of the heating temperature.

[0113] It should be noted that the above sequence of embodiments of the present invention is only for description and does not represent the superiority or inferiority of the embodiments. The processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0114] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key point of each embodiment is to illustrate the differences from other embodiments.

Claims

1. A high-efficiency heating and temperature control method for a portable heat-replenishing instrument, characterized in that: The method comprises: Within the preset historical period at the current moment, obtain the temperature data of the local material under each heating element in the portable thermal patching instrument at each acquisition moment; At each acquisition moment, according to the spatial distribution of the heating elements and the difference between the temperature data of different heating elements, the expansion deviation probability of the local material under each heating element in each preset direction is obtained; according to the fluctuation change of the temperature data of the local material under each heating element, the critical expansion temperature is obtained; At each acquisition moment, the displacement influence coefficient of the local material under each heating element is obtained according to the deviation of the temperature data of the local material under each heating element relative to the critical expansion temperature and the heating time up to each acquisition moment; at the current moment, the possible displacement coefficient of the local material under each heating element in each preset direction is obtained according to the displacement influence coefficient of the local material under each heating element at all historical acquisition moments and the expansion displacement probability in each preset direction; the displacement direction of the local material under each heating element at the current moment is screened out from all preset directions according to the possible displacement coefficient; At the current moment, according to the temperature data and the critical expansion temperature of the local material under each heating element, combined with the corresponding offset direction and position distribution, the offset position of the local material under each heating element is obtained; and the heating temperature of each heating element is regulated based on the offset position.

2. The high-efficiency heating and temperature control method for a portable heat compensation instrument according to claim 1, characterized in that: The method for obtaining the expansion shift probability includes: Any heating element is taken as a target element, and the remaining heating elements except the target element are taken as reference elements; at each acquisition moment, according to the spatial distance between the target element and each reference element and the difference in the temperature data between the corresponding local materials, the expansion influence weight of the local material under each reference element on the local material under the target element is obtained; Any preset direction is taken as the direction to be analyzed; at each acquisition moment, the projection value of the pointing vector of the target element pointing to each reference element in the direction to be analyzed is taken as the expansion influence parameter, the corresponding expansion influence parameter is weighted by the expansion influence weight, and the weighted result is taken as the expansion offset sub-parameter of the local material under the target element under the corresponding reference element in the direction to be analyzed; The expansion offset sub-parameters of the local material under the target element under all reference elements in the direction to be analyzed are integrated to obtain the expansion offset probability of the local material under the target element in the direction to be analyzed at each acquisition moment.

3. The high-efficiency heating and temperature control method for a portable heat compensation instrument according to claim 2, characterized in that: The method for obtaining the expansion influence weight includes: At each acquisition moment, the negatively correlated normalized value of the spatial distance between the target element and each reference element is used as a distance influence parameter, and the difference in temperature data between each reference element and the local material corresponding to the target element is used as a temperature transfer parameter; the distance influence parameter and the temperature transfer parameter are fused to obtain the expansion influence weight of the local material under each reference element on the local material under the target element at each acquisition moment.

4. The high-efficiency heating and temperature control method for a portable heat-replenishing instrument according to claim 1, characterized in that: The method for obtaining the critical expansion temperature includes: Taking any collection moment within the preset historical period of the current moment as the target moment, taking the temperature data at the target moment as the target temperature; taking any heating element as the target element; Obtaining a sub-confidence probability that the target temperature is the critical expansion temperature of the local material under the target element according to a fluctuation difference between fluctuations of all the temperature data of the local material under the target element before the target time and fluctuations of all the temperature data after the target time; At the target temperature, the sub-confidence probabilities of the critical expansion temperatures of the local materials under all the heating elements are integrated to obtain a comprehensive confidence probability that the target temperature is the critical expansion temperature; and based on the comprehensive confidence probability, the critical expansion temperature is screened out from all the temperature data.

5. The high-efficiency heating and temperature control method for a portable heat-replenishing instrument according to claim 1, characterized in that: The method for obtaining the offset influence coefficient includes: At each acquisition moment, the normalized result of the difference between the temperature data of the local material under each heating element and the critical expansion temperature is weighted using the sequence number of the acquisition moment, and the weighted result is used as the offset influence coefficient of the local material under each heating element.

6. The high-efficiency heating and temperature control method for a portable heat-replenishing instrument according to claim 1, characterized in that: The method for obtaining the possible offset coefficient includes: Taking the normalized result of the offset influence coefficient of the local material under each heating element at each acquisition moment as the offset influence weight; The expansion offset probability of the local material under the corresponding heating element at the corresponding acquisition moment in each preset direction is weighted by using the offset influence weight, and the weighted result is used as the possible sub-coefficient of the offset of the local material under the corresponding heating element in each preset direction at the corresponding acquisition moment; The possible sub-coefficients of the displacement of the local material under each heating element in each preset direction at all acquisition moments are integrated to obtain the possible coefficients of the displacement of the local material under each heating element in each preset direction at the current moment.

7. The high-efficiency heating and temperature control method for a portable heat-replenishing instrument according to claim 1, characterized in that: The method for obtaining the offset direction includes: The preset direction corresponding to the maximum possible offset coefficient is used as the offset direction of the local material under the corresponding heating element at the current moment.

8. The high-efficiency heating and temperature control method for a portable heat-replenishing instrument according to claim 1, characterized in that: The method for obtaining the offset position includes: At the current moment, according to the preset expansion coefficient of the local material under each heating element, and the difference between the temperature data and the critical expansion temperature, combined with the difference between the offset directions of the local materials under different heating elements, the offset value of the local material under each heating element in the corresponding offset direction is obtained; According to the offset value and the offset direction, a horizontal offset and a vertical offset are obtained; based on the horizontal offset and the vertical offset, combined with the initial position of each heating element, the offset position of the local material under each heating element is determined.

9. The high-efficiency heating and temperature control method for a portable heat-replenishing instrument according to claim 8, characterized in that: The method for obtaining the offset value includes: Taking any heating element as a target element and taking all the heating elements except the target element as reference elements; If the temperature data of the local material under the target element at the current moment is lower than the critical expansion temperature, the single-point offset value of the local material under the target element in the corresponding offset direction is set to 0; if the temperature data of the local material under the target element at the current moment is not lower than the critical expansion temperature, the difference between the temperature data at the current moment and the critical expansion temperature is multiplied by the preset expansion coefficient of the local material under the target element, and the product is used as the single-point offset value of the local material under the target element in the corresponding offset direction; The cosine value of the angle between the offset direction corresponding to each reference element and the offset direction corresponding to the target element is used as an additional offset weight, and the single-point offset value of the corresponding reference element in the corresponding offset direction is weighted by using the additional offset weight, and the weighted result is used as the additional offset value of each reference element to the target element; the additional offset values ​​of all reference elements to the target element and the single-point offset value of the target element are combined to obtain the offset value of the local material under the target element in the corresponding offset direction.

10. The high-efficiency heating and temperature control method for a portable heat-replenishing instrument according to claim 8, characterized in that: The method for obtaining the horizontal offset and the vertical offset includes: The cosine value of the angle between the offset direction and 0° corresponding to the target element is used as the horizontal reference weight, and the sine value is used as the vertical reference weight; the offset value of the target element is weighted using the horizontal reference weight to obtain the horizontal offset; the offset value of the target element is weighted using the vertical reference weight to obtain the vertical offset.

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