CN115342925B - Graphitizing furnace top temperature monitoring method and graphitizing furnace top temperature monitoring system with deviation correcting function - Google Patents
Graphitizing furnace top temperature monitoring method and graphitizing furnace top temperature monitoring system with deviation correcting function Download PDFInfo
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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Abstract
The invention provides a graphitizing furnace top temperature monitoring method and a graphitizing furnace top temperature monitoring system with a deviation correcting function, wherein the method comprises the following steps: acquiring a first temperature value of the top of the graphitization furnace measured by an infrared detection probe; acquiring current data of a heating module of the graphitizing furnace; determining a second temperature value of the top of the graphitization furnace based on the current data; when the difference value between the first temperature value and the second temperature value is larger than a preset trigger threshold value, performing deviation correcting operation on the infrared detection probe; and after the correction operation is finished, the first temperature value of the top of the graphitizing furnace measured by the infrared detection probe is acquired again. The graphitizing furnace top temperature monitoring method with the deviation correcting function realizes automatic deviation correction and improves the accuracy of graphitizing furnace top temperature monitoring.
Description
Technical Field
The invention relates to the technical field of graphitizing furnaces, in particular to a graphitizing furnace top temperature monitoring method and system with a deviation correcting function.
Background
The heat treatment is one of important factors influencing the heat conductivity of the graphene heat conduction film, and the heat treatment is divided into two-step carbonization and graphitization, so that the requirements on equipment are very high, and the control of the sintering process, the graphitization temperature and the graphitization time are all critical problems. The important process steps involve important equipment-carbonization furnace and high temperature graphitization furnace. The high-temperature graphitizing furnace is a vacuum graphitizing furnace, and is mainly used for graphitizing polyimide films (PI films) and graphene films, so that the high-temperature graphitizing furnace becomes a high-heat-conductivity graphite film. In the operation process of the high-temperature graphitization furnace, the internal temperature detection is particularly important, and because the internal temperature reaches 3000 ℃ even, the temperature sensor detection probe for common contact detection is not suitable, and a non-contact infrared detection probe is generally adopted, but compared with contact type measurement, the non-contact measurement is more prone to temperature measurement deviation.
Disclosure of Invention
The invention aims to provide a graphitized furnace top temperature monitoring method with a deviation rectifying function, so that automatic deviation rectifying is realized, and the accuracy of graphitized furnace top temperature monitoring is improved.
The embodiment of the invention provides a graphitizing furnace top temperature monitoring method with a deviation correcting function, which comprises the following steps:
acquiring a first temperature value of the top of the graphitization furnace measured by an infrared detection probe;
acquiring current data of a heating module of the graphitizing furnace;
determining a second temperature value of the top of the graphitization furnace based on the current data;
when the difference value between the first temperature value and the second temperature value is larger than a preset trigger threshold value, performing deviation correcting operation on the infrared detection probe;
and after the correction operation is finished, the first temperature value of the top of the graphitizing furnace measured by the infrared detection probe is acquired again.
Preferably, the determining a second temperature value of the top of the graphitization furnace based on the current data includes:
monitoring the current value of the heating module in real time;
when the current value of the heating module is changed from zero to non-zero and the changed current value is in a preset current range, the time corresponding to the change from zero to non-zero of the current value of the heating module is used as an acquisition node of current data;
acquiring current data of the heating module after the acquisition node as analysis data;
extracting the characteristics of the analysis data to obtain a plurality of characteristic values;
constructing a feature data set based on the plurality of feature values;
acquiring a preset current-temperature analysis library;
and matching the characteristic data set with each standard data set in the current-temperature analysis library one by one, and acquiring a temperature value corresponding to the standard data set matched with the characteristic data set as the second temperature value.
Preferably, the infrared detection probe is arranged in the temperature measuring chamber; the temperature measuring chamber is embedded in the side surface of the top of the graphitizing furnace;
the temperature measuring chamber comprises:
a housing provided in a cylindrical shape;
a plurality of chambers circumferentially distributed about a center of the housing;
the rotating platform is arranged in the middle of the cavity; the infrared detection probe is embedded in the side face of the rotating platform;
one of the chambers is arranged on one side of the shell close to the top of the graphitizing furnace, and a monitoring window is arranged at a position close to the inside of the top of the graphitizing furnace; the inner wall of one side of the other chambers far away from the rotating platform is embedded with a heating module; a thermal insulating layer is arranged between the chambers and the shell is made of thermal insulating materials.
Preferably, when the difference between the first temperature value and the second temperature value is greater than a preset trigger threshold, performing a deviation rectifying operation on the infrared detection probe, including:
controlling the operation of the heating modules in the chambers,
when each heating module reaches the corresponding preset temperature and is stable, controlling the rotating platform to rotate, so that the infrared detection probes sequentially measure the third temperature value of each heating module in each cavity;
constructing a correction feature set based on the third temperature value of each heating module;
acquiring a preset deviation correcting parameter library;
matching the correction feature set with each standard feature set in the correction parameter library to obtain a correction parameter set correspondingly associated with the standard feature set matched with the correction feature set;
and adjusting the parameters of the infrared detection probe based on the deviation rectifying parameter set.
Preferably, the temperature measuring chamber further comprises:
the transparent baffle is arranged in the setting cavity of the shell around the monitoring window;
the baffle plate fixing body is detachably connected with the transparent baffle plate; the baffle plate fixing body is arranged in a setting groove arranged below the monitoring window;
the motor is arranged in the cavity where the monitoring window is positioned, and the power output end of the motor is provided with a gear meshed with a rack arranged on one side of the baffle plate fixing body; the motor drives the baffle plate fixing body to move up and down in the setting groove through the gear and the rack, so that the motor drives the transparent baffle plate to move up and down, and the position of the monitoring window corresponding to the transparent baffle plate is changed;
before performing the deviation rectifying operation on the infrared detection probe when the difference value between the first temperature value and the second temperature value is greater than a preset trigger threshold value, the method further comprises:
controlling the motor to act so that the position of the monitoring window corresponding to the transparent baffle plate is changed;
when the temperature is changed, measuring a first temperature value of the top of the graphitization furnace again through the infrared detection probe;
determining whether the difference value between the first temperature value and the second temperature value measured again is larger than a preset trigger threshold value; if not, the deviation rectifying operation is not needed; and if so, performing deviation rectifying operation on the infrared detection probe.
The invention provides a graphitizing furnace top temperature monitoring system with a deviation correcting function, which comprises:
the temperature acquisition module is used for acquiring a first temperature value of the top of the graphitization furnace measured by the infrared detection probe;
the current acquisition module is used for acquiring current data of the heating module of the graphitizing furnace;
the temperature determining module is used for determining a second temperature value of the top of the graphitization furnace based on the current data;
the deviation rectifying module is used for carrying out deviation rectifying operation on the infrared detection probe when the difference value between the first temperature value and the second temperature value is larger than a preset trigger threshold value;
and the temperature acquisition module is also used for re-acquiring the first temperature value of the top of the graphitization furnace measured by the infrared detection probe after the correction operation is completed.
Preferably, the temperature determining module determines a second temperature value of the top of the graphitization furnace based on the current data, and performs the following operations:
monitoring the current value of the heating module in real time;
when the current value of the heating module is changed from zero to non-zero and the changed current value is in a preset current range, the time corresponding to the change from zero to non-zero of the current value of the heating module is used as an acquisition node of current data;
acquiring current data of the heating module after the acquisition node as analysis data;
extracting the characteristics of the analysis data to obtain a plurality of characteristic values;
constructing a feature data set based on the plurality of feature values;
acquiring a preset current-temperature analysis library;
and matching the characteristic data set with each standard data set in the current-temperature analysis library one by one, and acquiring a temperature value corresponding to the standard data set matched with the characteristic data set as the second temperature value.
Preferably, the infrared detection probe is arranged in the temperature measuring chamber; the temperature measuring chamber is embedded in the side surface of the top of the graphitizing furnace;
the temperature measuring chamber comprises:
a housing provided in a cylindrical shape;
a plurality of chambers circumferentially distributed about a center of the housing;
the rotating platform is arranged in the middle of the cavity; the infrared detection probe is embedded in the side face of the rotating platform;
one of the chambers is arranged on one side of the shell close to the top of the graphitizing furnace, and a monitoring window is arranged at a position close to the inside of the top of the graphitizing furnace; the inner wall of one side of the other chambers far away from the rotating platform is embedded with a heating module; a thermal insulating layer is arranged between the chambers and the shell is made of thermal insulating materials.
Preferably, when the difference between the first temperature value and the second temperature value is greater than a preset trigger threshold, the deviation rectifying module performs a deviation rectifying operation on the infrared detection probe, and performs the following operations:
controlling the operation of the heating modules in the chambers,
when each heating module reaches the corresponding preset temperature and is stable, controlling the rotating platform to rotate, so that the infrared detection probes sequentially measure the third temperature value of each heating module in each cavity;
constructing a correction feature set based on the third temperature value of each heating module;
acquiring a preset deviation correcting parameter library;
matching the correction feature set with each standard feature set in the correction parameter library to obtain a correction parameter set correspondingly associated with the standard feature set matched with the correction feature set;
and adjusting the parameters of the infrared detection probe based on the deviation rectifying parameter set.
Preferably, the temperature measuring chamber further comprises:
the transparent baffle is arranged in the setting cavity of the shell around the monitoring window;
the baffle plate fixing body is detachably connected with the transparent baffle plate; the baffle plate fixing body is arranged in a setting groove arranged below the monitoring window;
the motor is arranged in the cavity where the monitoring window is positioned, and the power output end of the motor is provided with a gear meshed with a rack arranged on one side of the baffle plate fixing body; the motor drives the baffle plate fixing body to move up and down in the setting groove through the gear and the rack, so that the motor drives the transparent baffle plate to move up and down, and the position of the monitoring window corresponding to the transparent baffle plate is changed;
when the difference value between the first temperature value and the second temperature value is larger than a preset trigger threshold value, before the deviation rectifying module rectifies the infrared detection probe, the deviation rectifying module further performs the following operations:
controlling the motor to act so that the position of the monitoring window corresponding to the transparent baffle plate is changed;
when the temperature is changed, measuring a first temperature value of the top of the graphitization furnace again through the infrared detection probe;
determining whether the difference value between the first temperature value and the second temperature value measured again is larger than a preset trigger threshold value; if not, the deviation rectifying operation is not needed; and if so, performing deviation rectifying operation on the infrared detection probe.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of a graphitization furnace top temperature monitoring method with deviation correcting function in an embodiment of the invention;
FIG. 2 is a schematic diagram of a temperature measuring chamber according to an embodiment of the present invention;
FIG. 3 is a schematic view of a temperature measuring chamber according to another embodiment of the present invention;
FIG. 4 is a schematic view of a baffle plate holder according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a graphitization furnace top temperature monitoring system with a deviation rectifying function in an embodiment of the invention.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
The embodiment of the invention provides a graphitization furnace top temperature monitoring method with a deviation correcting function, which is shown in fig. 1 and comprises the following steps:
step S1: acquiring a first temperature value of the top of the graphitization furnace measured by an infrared detection probe;
step S2: acquiring current data of a heating module of the graphitizing furnace;
step S3: determining a second temperature value of the top of the graphitization furnace based on the current data;
step S4: when the difference value between the first temperature value and the second temperature value is larger than a preset trigger threshold value, performing deviation correcting operation on the infrared detection probe;
step S5: and after the correction operation is finished, the first temperature value of the top of the graphitizing furnace measured by the infrared detection probe is acquired again.
The working principle and the beneficial effects of the technical scheme are as follows:
the first temperature value of the top of the graphitizing furnace measured by the infrared detection probe is an actual measurement value and is the temperature of the top position in the graphitizing furnace measured by the infrared detection probe; the second temperature value determined by the current data is the energy generated by the heat generation of the heating module, and the theoretical value is deduced; and determining whether measurement abnormality occurs or not through the difference between the actual measurement value and the theoretical value, and determining that the infrared detection probe generates abnormal offset when the difference between the first temperature value and the second temperature value is larger than a preset trigger threshold value, so that the offset is eliminated through deviation correction operation, the first temperature value is rewritten and measured after the offset is eliminated, and the accuracy of temperature measurement in the graphitization furnace is ensured. The trigger threshold may be set to any value from 5 degrees celsius to 30 degrees celsius.
In one embodiment, the determining a second temperature value of the graphitization furnace roof based on the current data comprises:
monitoring the current value of the heating module in real time;
when the current value of the heating module is changed from zero to non-zero and the changed current value is in a preset current range, the time corresponding to the change from zero to non-zero of the current value of the heating module is used as an acquisition node of current data; when the graphitization furnace does not work, the current value is zero; when in operation, the current value will rise to a current value corresponding to the heating temperature rise, for example: 10A-50A; therefore, whether the graphitization furnace is heated or not can be determined through the change of the current value, and the current data after working is obtained;
acquiring current data of the heating module after the acquisition node as analysis data;
extracting the characteristics of the analysis data to obtain a plurality of characteristic values; the characteristic values include: the time length corresponding to the current data, the time point corresponding to the position of the current change in the current data, the current average value before the current change and the current average value lamp after the current change;
constructing a feature data set based on the plurality of feature values; the characteristic values are arranged in sequence to construct a characteristic data set;
acquiring a preset current-temperature analysis library;
and matching the characteristic data set with each standard data set in the current-temperature analysis library one by one, and acquiring a temperature value corresponding to the standard data set matched with the characteristic data set as the second temperature value.
The working principle and the beneficial effects of the technical scheme are as follows:
analyzing the comprehensive current data through a current-temperature analysis library constructed in advance to determine the temperature value of the top of the graphitizing furnace; the current-temperature analysis library is constructed based on a large number of accurate measured data analysis; in the step of matching the characteristic data set with each standard data set in the current-temperature analysis library one by one, matching operation can be performed by calculating the similarity between the characteristic data set and the standard data set, and the similarity calculation formula is as follows:
wherein XSD is the characteristic dataSimilarity of the set and the standard data set; t (T) i An i-th data value in the feature data set; b (B) i The ith data value in the standard data set is used, and n is the total number of data in the characteristic data set or the total number of data in the standard data set; when the similarity is the largest in the current-temperature analysis library, the two are determined to match.
In one embodiment, the infrared detection probe is disposed within a thermometry chamber; the temperature measuring chamber is embedded in the side surface of the top of the graphitizing furnace;
as shown in fig. 2, the temperature measuring chamber includes:
a housing 10 provided in a cylindrical shape;
a plurality of chambers 11 circumferentially distributed at the center of the housing 10;
a rotating platform 14 arranged in the middle of the chamber 11; the infrared detection probe 13 is embedded on the side surface of the rotating platform 14;
one of the chambers 11 is arranged on one side of the shell 10 close to the top of the graphitization furnace, and a monitoring window 12 is arranged at a position close to the inside of the top of the graphitization furnace; the other inner walls of the chambers 11 on one side far away from the rotating platform 14 are embedded with heating modules 15; a thermal insulating layer is arranged between the chambers and the shell is made of thermal insulating materials. The heating module 15 can adopt electric control heating; i.e. an electric heating wire controlled by a temperature controller.
When the difference between the first temperature value and the second temperature value is greater than a preset trigger threshold, performing a deviation rectifying operation on the infrared detection probe 13, including:
the heat generating module 15 in each of the chambers 11 is controlled to operate,
when each heating module 15 reaches the corresponding preset temperature and is stable, controlling the rotation platform 14 to rotate, so that the infrared detection probe 13 sequentially measures the third temperature value of each heating module 15 in each chamber 11; for example: when the number of the chambers 11 is four in total, the preset temperature distribution of the heat generating modules 15 in the two chambers 11 located beside the chamber 11 of the monitoring window 12 is 200 degrees and 300 degrees, and the preset temperature of the heat generating modules 15 in the remaining one chamber 11 is set to be 50 degrees; the higher temperature is placed in the chamber 11 close to the graphitization furnace, and the lower temperature is set in the chamber 11 far away from the graphitization furnace, so that the influence of the high temperature of the graphitization furnace on the measurement of the heating module 15 with the lower temperature is avoided, and the correction accuracy is improved; in addition, the heating module 15 can be set into a plurality of temperature areas so as to realize measurement of more points, thereby improving the correction accuracy;
constructing a correction feature set based on the third temperature values of the respective heating modules 15; the heat generating modules 15 are numbered in advance, for example, in order clockwise, 0001, 0002, 0003, … …, respectively; sequencing the third temperature values according to the serial number order to form a correction characteristic set;
acquiring a preset deviation correcting parameter library;
matching the correction feature set with each standard feature set in the correction parameter library to obtain a correction parameter set correspondingly associated with the standard feature set matched with the correction feature set; the matching between the correction feature set and the standard feature set and the matching between the feature data set and the standard data set adopt the same mode, and will not be described herein;
and adjusting the parameters of the infrared detection probe based on the deviation rectifying parameter set.
The working principle and the beneficial effects of the technical scheme are as follows:
when the deviation correcting action is performed, the infrared detection probes sequentially detect the temperature of the heating modules in the cavities through rotation of the rotating platform; determining the deviation of the infrared detection probe through the measurement of the temperature of the heating module and the analysis of the actual temperature of the heating module; thereby realizing the deviation rectifying operation of the infrared detection probe.
In one embodiment, as shown in fig. 3, the greenhouse further comprises:
a transparent baffle 21 disposed in a disposition cavity of the housing 10 around the monitoring window 12;
a baffle fixing body 22 detachably connected with the transparent baffle 21; the baffle fixing body 22 is arranged in a setting groove arranged below the monitoring window 12;
a motor 23 disposed in the chamber 11 where the monitoring window 12 is located, and having a power output end provided with a gear engaged with a rack 222 disposed at one side of the baffle plate fixing body 22; the motor drives the baffle plate fixing body 22 to move up and down in the setting groove through the gear and the rack 222, so as to drive the transparent baffle plate 21 to move up and down, and the position of the monitoring window 12 corresponding to the transparent baffle plate 21 is changed;
before performing the deviation rectifying operation on the infrared detection probe 13 when the difference between the first temperature value and the second temperature value is greater than a preset trigger threshold, the method further includes:
controlling the motor 23 to act so as to change the position of the monitoring window 12 corresponding to the transparent baffle 21;
when changed, the first temperature value of the top of the graphitization furnace is measured again through the infrared detection probe 13;
determining whether the difference value between the first temperature value and the second temperature value measured again is larger than a preset trigger threshold value; if not, the deviation rectifying operation is not needed; and if so, performing deviation rectifying operation on the infrared detection probe.
The working principle and the beneficial effects of the technical scheme are as follows:
the motor 23 drives the transparent baffle 21 to move, so that the position of the baffle is changed, the measurement is prevented from being influenced by dirt on the transparent baffle 21, and the triggering accuracy of the deviation correcting operation is improved. As shown in fig. 4, the baffle fixing body 22 includes an arc-shaped main body 221; a rack 222 is arranged in the middle of the arc-shaped main body 221; transparent baffle fixing strips 223 symmetrically arranged at one end of the arc-shaped main body 221, and a plurality of fixing columns 224 are arranged on the transparent baffle fixing strips 223; the fixing column 224 is matched with the fixing holes on the ladder structures at the two sides of the transparent baffle 21 to realize the detachable connection of the transparent baffle 21 and the baffle fixing body 22.
The invention provides a graphitization furnace top temperature monitoring system with a deviation correcting function, as shown in fig. 5, comprising:
the temperature acquisition module 1 is used for acquiring a first temperature value of the top of the graphitization furnace measured by the infrared detection probe;
the current acquisition module 2 is used for acquiring current data of a heating module of the graphitization furnace;
a temperature determining module 3, configured to determine a second temperature value of the top of the graphitization furnace based on the current data;
the deviation rectifying module 4 is used for carrying out deviation rectifying operation on the infrared detection probe when the difference value between the first temperature value and the second temperature value is larger than a preset trigger threshold value;
and the temperature acquisition module 1 is also used for re-acquiring the first temperature value of the top of the graphitization furnace measured by the infrared detection probe after the correction operation is completed.
In one embodiment, the temperature determination module 3 determines a second temperature value of the graphitization furnace roof based on the current data, performing the following operations:
monitoring the current value of the heating module in real time;
when the current value of the heating module is changed from zero to non-zero and the changed current value is in a preset current range, the time corresponding to the change from zero to non-zero of the current value of the heating module is used as an acquisition node of current data;
acquiring current data of the heating module after the acquisition node as analysis data;
extracting the characteristics of the analysis data to obtain a plurality of characteristic values;
constructing a feature data set based on the plurality of feature values;
acquiring a preset current-temperature analysis library;
and matching the characteristic data set with each standard data set in the current-temperature analysis library one by one, and acquiring a temperature value corresponding to the standard data set matched with the characteristic data set as the second temperature value.
In one embodiment, the infrared detection probe is disposed within a thermometry chamber; the temperature measuring chamber is embedded in the side surface of the top of the graphitizing furnace;
the temperature measuring chamber comprises:
a housing provided in a cylindrical shape;
a plurality of chambers circumferentially distributed about a center of the housing;
the rotating platform is arranged in the middle of the cavity; the infrared detection probe is embedded in the side face of the rotating platform;
one of the chambers is arranged on one side of the shell close to the top of the graphitizing furnace, and a monitoring window is arranged at a position close to the inside of the top of the graphitizing furnace; the inner wall of one side of the other chambers far away from the rotating platform is embedded with a heating module; a thermal insulating layer is arranged between the chambers and the shell is made of thermal insulating materials.
In one embodiment, when the difference between the first temperature value and the second temperature value is greater than a preset trigger threshold, the deviation correcting module 4 performs a deviation correcting operation on the infrared detection probe, and performs the following operations:
controlling the operation of the heating modules in the chambers,
when each heating module reaches the corresponding preset temperature and is stable, controlling the rotating platform to rotate, so that the infrared detection probes sequentially measure the third temperature value of each heating module in each cavity;
constructing a correction feature set based on the third temperature value of each heating module;
acquiring a preset deviation correcting parameter library;
matching the correction feature set with each standard feature set in the correction parameter library to obtain a correction parameter set correspondingly associated with the standard feature set matched with the correction feature set;
and adjusting the parameters of the infrared detection probe based on the deviation rectifying parameter set.
In one embodiment, the thermometry chamber further comprises:
the transparent baffle is arranged in the setting cavity of the shell around the monitoring window;
the baffle plate fixing body is detachably connected with the transparent baffle plate; the baffle plate fixing body is arranged in a setting groove arranged below the monitoring window;
the motor is arranged in the cavity where the monitoring window is positioned, and the power output end of the motor is provided with a gear meshed with a rack arranged on one side of the baffle plate fixing body; the motor drives the baffle plate fixing body to move up and down in the setting groove through the gear and the rack, so that the motor drives the transparent baffle plate to move up and down, and the position of the monitoring window corresponding to the transparent baffle plate is changed;
when the difference value between the first temperature value and the second temperature value is larger than a preset trigger threshold value, before the deviation rectifying module rectifies the infrared detection probe, the deviation rectifying module further performs the following operations:
controlling the motor to act so that the position of the monitoring window corresponding to the transparent baffle plate is changed;
when the temperature is changed, measuring a first temperature value of the top of the graphitization furnace again through the infrared detection probe;
determining whether the difference value between the first temperature value and the second temperature value measured again is larger than a preset trigger threshold value; if not, the deviation rectifying operation is not needed; and if so, performing deviation rectifying operation on the infrared detection probe.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (6)
1. The graphitization furnace top temperature monitoring method with the deviation correcting function is characterized by comprising the following steps of:
acquiring a first temperature value of the top of the graphitization furnace measured by an infrared detection probe;
acquiring current data of a heating module of the graphitizing furnace;
determining a second temperature value of the top of the graphitization furnace based on the current data;
when the difference value between the first temperature value and the second temperature value is larger than a preset trigger threshold value, performing deviation correcting operation on the infrared detection probe;
after the correction operation is completed, the first temperature value of the top of the graphitized furnace measured by the infrared detection probe is obtained again;
wherein the infrared detection probe is arranged in the temperature measuring chamber; the temperature measuring chamber is embedded in the side surface of the top of the graphitizing furnace;
the temperature measuring chamber comprises:
a housing provided in a cylindrical shape;
a plurality of chambers circumferentially distributed about a center of the housing;
the rotating platform is arranged in the middle of the cavity; the infrared detection probe is embedded in the side face of the rotating platform;
one of the chambers is arranged on one side of the shell close to the top of the graphitizing furnace, and a monitoring window is arranged at a position close to the inside of the top of the graphitizing furnace; the inner wall of one side of the other chambers far away from the rotating platform is embedded with a heating module; a heat insulation layer is arranged between the chambers, and the shell is made of heat insulation materials;
when the difference value between the first temperature value and the second temperature value is larger than a preset trigger threshold value, performing deviation rectifying operation on the infrared detection probe, including:
controlling the operation of the heating modules in the chambers,
when each heating module reaches the corresponding preset temperature and is stable, controlling the rotating platform to rotate, so that the infrared detection probes sequentially measure the third temperature value of each heating module in each cavity;
constructing a correction feature set based on the third temperature value of each heating module;
acquiring a preset deviation correcting parameter library;
matching the correction feature set with each standard feature set in the correction parameter library to obtain a correction parameter set correspondingly associated with the standard feature set matched with the correction feature set;
and adjusting the parameters of the infrared detection probe based on the deviation rectifying parameter set.
2. The method for monitoring the temperature of the top of a graphitized furnace with a deviation rectifying function according to claim 1, wherein the determining the second temperature value of the top of the graphitized furnace based on the current data comprises:
monitoring the current value of the heating module in real time;
when the current value of the heating module is changed from zero to non-zero and the changed current value is in a preset current range, the time corresponding to the change from zero to non-zero of the current value of the heating module is used as an acquisition node of current data;
acquiring current data of the heating module after the acquisition node as analysis data;
extracting the characteristics of the analysis data to obtain a plurality of characteristic values;
constructing a feature data set based on the plurality of feature values;
acquiring a preset current-temperature analysis library;
and matching the characteristic data set with each standard data set in the current-temperature analysis library one by one, and acquiring a temperature value corresponding to the standard data set matched with the characteristic data set as the second temperature value.
3. The graphitization furnace top temperature monitoring method with deviation correcting function according to claim 1, wherein the temperature measuring chamber further comprises:
the transparent baffle is arranged in the setting cavity of the shell around the monitoring window;
the baffle plate fixing body is detachably connected with the transparent baffle plate; the baffle plate fixing body is arranged in a setting groove arranged below the monitoring window;
the motor is arranged in the cavity where the monitoring window is positioned, and the power output end of the motor is provided with a gear meshed with a rack arranged on one side of the baffle plate fixing body; the motor drives the baffle plate fixing body to move up and down in the setting groove through the gear and the rack, so that the motor drives the transparent baffle plate to move up and down, and the position of the monitoring window corresponding to the transparent baffle plate is changed;
before performing the deviation rectifying operation on the infrared detection probe when the difference value between the first temperature value and the second temperature value is greater than a preset trigger threshold value, the method further comprises:
controlling the motor to act so that the position of the monitoring window corresponding to the transparent baffle plate is changed;
when the temperature is changed, measuring a first temperature value of the top of the graphitizing furnace again through the infrared detection probe;
determining whether the difference value between the first temperature value and the second temperature value measured again is larger than a preset trigger threshold value; if not, the deviation rectifying operation is not needed; and if so, performing deviation rectifying operation on the infrared detection probe.
4. Graphitization furnace roof temperature monitoring system with function of rectifying, characterized by comprising:
the temperature acquisition module is used for acquiring a first temperature value of the top of the graphitization furnace measured by the infrared detection probe;
the current acquisition module is used for acquiring current data of the heating module of the graphitizing furnace;
the temperature determining module is used for determining a second temperature value of the top of the graphitization furnace based on the current data;
the deviation rectifying module is used for carrying out deviation rectifying operation on the infrared detection probe when the difference value between the first temperature value and the second temperature value is larger than a preset trigger threshold value;
the temperature acquisition module is also used for re-acquiring a first temperature value of the top of the graphitization furnace measured by the infrared detection probe after the correction operation is executed;
the infrared detection probe is arranged in the temperature measuring chamber; the temperature measuring chamber is embedded in the side surface of the top of the graphitizing furnace;
the temperature measuring chamber comprises:
a housing provided in a cylindrical shape;
a plurality of chambers circumferentially distributed about a center of the housing;
the rotating platform is arranged in the middle of the cavity; the infrared detection probe is embedded in the side face of the rotating platform;
one of the chambers is arranged on one side of the shell close to the top of the graphitizing furnace, and a monitoring window is arranged at a position close to the inside of the top of the graphitizing furnace; the inner wall of one side of the other chambers far away from the rotating platform is embedded with a heating module; a heat insulation layer is arranged between the chambers, and the shell is made of heat insulation materials;
when the difference value between the first temperature value and the second temperature value is larger than a preset trigger threshold value, the deviation correcting module performs deviation correcting operation on the infrared detection probe, and the following operation is performed:
controlling the operation of the heating modules in the chambers,
when each heating module reaches the corresponding preset temperature and is stable, controlling the rotating platform to rotate, so that the infrared detection probes sequentially measure the third temperature value of each heating module in each cavity;
constructing a correction feature set based on the third temperature value of each heating module;
acquiring a preset deviation correcting parameter library;
matching the correction feature set with each standard feature set in the correction parameter library to obtain a correction parameter set correspondingly associated with the standard feature set matched with the correction feature set;
and adjusting the parameters of the infrared detection probe based on the deviation rectifying parameter set.
5. The graphitization furnace roof temperature monitoring system with deviation correcting function according to claim 4, wherein the temperature determining module determines a second temperature value of the graphitization furnace roof based on the current data, and performs the following operations:
monitoring the current value of the heating module in real time;
when the current value of the heating module is changed from zero to non-zero and the changed current value is in a preset current range, the time corresponding to the change from zero to non-zero of the current value of the heating module is used as an acquisition node of current data;
acquiring current data of the heating module after the acquisition node as analysis data;
extracting the characteristics of the analysis data to obtain a plurality of characteristic values;
constructing a feature data set based on the plurality of feature values;
acquiring a preset current-temperature analysis library;
and matching the characteristic data set with each standard data set in the current-temperature analysis library one by one, and acquiring a temperature value corresponding to the standard data set matched with the characteristic data set as the second temperature value.
6. The graphitization furnace roof temperature monitoring system with deviation correcting function according to claim 4, wherein the temperature measuring chamber further comprises:
the transparent baffle is arranged in the setting cavity of the shell around the monitoring window;
the baffle plate fixing body is detachably connected with the transparent baffle plate; the baffle plate fixing body is arranged in a setting groove arranged below the monitoring window;
the motor is arranged in the cavity where the monitoring window is positioned, and the power output end of the motor is provided with a gear meshed with a rack arranged on one side of the baffle plate fixing body; the motor drives the baffle plate fixing body to move up and down in the setting groove through the gear and the rack, so that the motor drives the transparent baffle plate to move up and down, and the position of the monitoring window corresponding to the transparent baffle plate is changed;
when the difference value between the first temperature value and the second temperature value is larger than a preset trigger threshold value, before the deviation rectifying module rectifies the infrared detection probe, the deviation rectifying module further performs the following operations:
controlling the motor to act so that the position of the monitoring window corresponding to the transparent baffle plate is changed;
when the temperature is changed, measuring a first temperature value of the top of the graphitizing furnace again through the infrared detection probe;
determining whether the difference value between the first temperature value and the second temperature value measured again is larger than a preset trigger threshold value; if not, the deviation rectifying operation is not needed; and if so, performing deviation rectifying operation on the infrared detection probe.
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