CN112462820A - Temperature control system and method for graphene heating material and storage medium - Google Patents
Temperature control system and method for graphene heating material and storage medium Download PDFInfo
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Abstract
The invention discloses a temperature control system, a method and a computing medium for a graphene heating material, wherein the system comprises: a starting unit for calculating a temperature curve slope K of the graphene heating materialnJudging whether to start the temperature control unit or not according to the real-time value; a temperature control unit for controlling the temperature of the graphene heating material according to the temperature curve slope KnAdjusting the output voltage increment of the power supply by the real-time numerical value; and the change rate P according to the temperature curve slope of the graphene heating materialiThe instantaneous value of the absolute value of (c) adjusts the magnitude of the output voltage of the power supply. The change rate P of the temperature curve slope of the graphene heating material is usediThe scaling coefficient of the control program is adjusted by the instant value of the absolute value, so that the output voltage of the power supply is adjusted, the heating temperature is controlled more stably, and the adverse effects of equipment damage and the like caused by overhigh instant temperature during heating are avoided. The invention is applicable to the field of control.
Description
Technical Field
The disclosure relates to the field of control, in particular to a temperature control system, a method and a computing medium for a graphene heating material.
Background
The core heating component of the graphene heating material generally adopts a graphene heating film, can be rapidly heated by utilizing the characteristics of high electric conductivity and heat conductivity of graphene, has a very wide application background, can be used in military, industrial and civil application scenes such as heating of flatirons and cold regions, equipment heating and the like, and brings great convenience to life and work of people. Most electric heating equipment in the market all adopt the working method who adjusts through the temperature value, but because uncertain factors such as heating material's heating, heat dissipation, ambient humidity, pressure, the temperature is too high in the twinkling of an eye easily appears in continuous work, leads to equipment to damage or causes other bad effects.
Disclosure of Invention
The present disclosure is directed to a temperature control system for a graphene exothermic material, so as to solve one or more technical problems in the prior art, and provide at least one of the beneficial options and conditions.
In a first aspect, the present disclosure provides a temperature control system for a graphene heating material, the system including:
a starting unit for calculating a temperature curve slope K of the graphene heating materialnThe instant value of (A) judging whether to start the temperature control unit, the slope K of the temperature curvenThe real-time value is the slope K of the temperature curve during measurementnN is equal to the number of times of calculating the slope of the temperature curve, and n is a natural number greater than 1;
a temperature control unit for controlling the temperature of the graphene heating material according to the temperature curve slope KnThe output voltage increment of the power supply is adjusted by the real-time numerical value, and the voltage increment is the difference between the voltage during detection and the voltage during last detection; and the change rate P according to the temperature curve slope of the graphene heating materialiThe magnitude of the output voltage of the power supply and the change rate P of the slope of the temperature curveiThe instantaneous absolute value of (A) is the slope change rate P of the temperature curve during calculationiThe change rate of the temperature curve slope is the ratio of the difference between the temperature curve slope in the calculation and the temperature curve slope in the last calculation to the interval time between the two calculations, i is equal to the number of times of calculating the change rate of the temperature curve slope, and i is a natural number greater than 1.
In a second aspect, the present disclosure provides a temperature control method for a graphene heating material, where the temperature control method is executed by the temperature control system for the graphene heating material, and the temperature control method includes:
the method comprises the following steps:
step A, starting the step, namely, according to the temperature curve slope K of the graphene heating materialnThe instant value of (a) judging whether to execute the temperature control step, the slope K of the temperature curvenIs measured as an instantaneous valueSlope K of time-temperature curvenN is equal to the number of times of calculating the slope of the temperature curve, and n is a natural number greater than 1;
step B, temperature control:
b1, according to the temperature curve gradient K of the graphene heating materialnThe output voltage increment of the power supply is adjusted by the real-time numerical value, and the voltage increment is the difference between the voltage during detection and the voltage during last detection;
b2, rate of change P according to the temperature curve slope of the graphene exothermic materialiThe magnitude of the output voltage of the power supply and the change rate P of the slope of the temperature curveiThe instantaneous absolute value of (A) is the slope change rate P of the temperature curve during calculationiThe change rate of the temperature curve slope is the ratio of the difference between the temperature curve slope in the calculation and the temperature curve slope in the last calculation to the interval time between the two calculations, i is equal to the number of times of calculating the change rate of the temperature curve slope, and i is a natural number greater than 1.
Specifically, in the step a, the program is started, and the slope K of the temperature curve of the graphene exothermic material is determinednThe method for judging whether to execute the temperature control step by the instant numerical value comprises the following steps:
a100, starting a time delay program;
a200, starting the temperature acquisition program;
a300, calculating the slope K of the temperature curvenN is equal to the number of times of calculating the slope of the temperature curve, and n is a natural number greater than 1;
a400, comparing the temperature curve slope KnThe instantaneous value and the temperature curve slope threshold value K0If K isn>K0Go to step a100, otherwise go to step B.
Specifically, in step B1, the temperature curve slope K of the graphene exothermic material is determinednThe method for adjusting the increment of the output voltage of the power supply by the instant numerical value comprises the following steps:
b101, setting initial voltage increment dir of the power supply0Is-1, i.e., the voltage increment is negative;
b102, starting a delay program;
b103, starting a temperature acquisition program;
b104, calculating the slope K of the temperature curven；
B105, reading the voltage increment, if the instant numerical value dir (n) of the voltage increment is 1, namely the voltage increment variation is a positive value, turning to the step B106, otherwise, turning to the step B108, wherein the instant numerical value dir (n) of the voltage increment is the numerical value of the voltage increment dir during monitoring;
b106, calculating the slope K of the temperature curvenAnd the slope threshold K of the temperature curve0Making a comparison if Kn>K0Go to step B107, otherwise go to step B2;
b107, setting the instant value dir (n) of the voltage increment to be-1, namely adjusting the voltage increment to be a negative value, and turning to the step B2;
b108, calculating the slope K of the temperature curvenAnd the negative value-K of the slope threshold of the temperature curve0Making a comparison if Kn<-K0Go to step B109, otherwise go to step B2;
b109, setting the instantaneous value dir (n) of the voltage increment to 1, i.e., adjusting the voltage increment to a positive value, and proceeding to step B2.
Specifically, in step B2, the rate of change P according to the slope of the temperature curve of the graphene exothermic materialiThe method for adjusting the output voltage of the power supply by the absolute value of the voltage is as follows:
b201, calculating the change rate P of the temperature curve slope of the graphene heating materialiAnd the rate of change P of the temperature slopeiIs compared if | Pi|<Q, then the existing voltage is maintained unchanged, and the step 102 is switched to, otherwise, the step 202 is switched to;
b202, comparing the change rate P of the slope of the temperature curveiThe instantaneous value of the absolute value of (b) and the magnitude of beta, if | Pi|<β, go to step B203, otherwise go to step B204;
b203, setting the coefficient a to Y, and going to step B207, wherein Y is a constant;
b204, comparing the change rate P of the slope of the temperature curveiThe instantaneous value of the absolute value of (c) and the magnitude of ε, if | Pi|>β, go to step B205, otherwise go to step B206;
b205, setting the coefficient a to X, and going to step B207, where X is a constant;
b206, setting the coefficient a to Z, and going to step B207, where Z is a constant;
b207, if the instantaneous value dir (n) of the voltage increment is 1, go to step B208, otherwise go to step B209;
b208, increasing the output voltage (a × p |) V of the power supply, and returning to the step B102, wherein V is a unit volt of voltage;
b209, the output voltage (a × | p |) V of the power supply is decreased, and the process returns to step B102.
In a third aspect, the present disclosure also proposes a computer-readable storage medium in which a computer-executable program is stored, which when executed by a computer is for implementing the method according to any one of claims 2 to 5, the method comprising:
step A, starting the step, namely, according to the temperature curve slope K of the graphene heating materialnThe instant value of (a) judging whether to execute the temperature control step, the slope K of the temperature curvenThe real-time value is the slope K of the temperature curve during measurementnN is equal to the number of times of calculating the slope of the temperature curve, and n is a natural number greater than 1;
step B, temperature control:
b1, according to the temperature curve gradient K of the graphene heating materialnThe output voltage increment of the power supply is adjusted by the real-time numerical value, and the voltage increment is the difference between the voltage during detection and the voltage during last detection;
b2, rate of change P according to the temperature curve slope of the graphene exothermic materialiThe magnitude of the output voltage of the power supply and the change rate P of the slope of the temperature curveiThe instantaneous absolute value of (A) is the slope change rate P of the temperature curve during calculationiAbsolute value of (d), rate of change of slope of said temperature curveI is the ratio of the difference between the slope of the temperature curve in the calculation and the slope of the temperature curve in the last calculation to the interval time of the two calculations, and is equal to the number of times of calculating the change rate of the slope of the temperature curve, and i is a natural number greater than 1.
The beneficial effect of this disclosure does: the invention provides a temperature control system and method for a graphene heating material and a computing medium. Temperature curve slope K through graphene heating materialnThe instant numerical value of (3) adjusts the increment direction of the output voltage of the power supply; and the change rate P of the temperature curve slope of the graphene heating materialiThe scaling coefficient of the control program is adjusted according to the instant numerical value of the absolute value, so that the output voltage of the power supply is adjusted, the heating temperature of the graphene heating material is controlled more stably, and the phenomenon that equipment is damaged or other adverse effects are caused due to the fact that the heating temperature is too high in the moment is avoided.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology.
Drawings
The foregoing and other features of the present disclosure will become more apparent from the detailed description of the embodiments shown in conjunction with the drawings in which like reference characters designate the same or similar elements throughout the several views, and it is apparent that the drawings in the following description are merely some examples of the present disclosure and that other drawings may be derived therefrom by those skilled in the art without the benefit of any inventive faculty, and in which:
fig. 1 is a flowchart illustrating a temperature control method for a graphene heating material according to an embodiment of the present disclosure;
fig. 2 is a temperature-time curve of a graphene exothermic material according to an embodiment of the present disclosure;
fig. 3 is a temperature curve slope-time curve diagram of a graphene heating material according to an embodiment of the disclosure;
fig. 4 is a graph showing an absolute value-time curve of a change rate of a temperature curve slope of a graphene exothermic material according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. The components of embodiments of the present disclosure, generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present disclosure, presented in the figures, is not intended to limit the scope of the claimed disclosure, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the disclosure without making creative efforts, shall fall within the protection scope of the disclosure.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present disclosure, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
First, some terms in the present disclosure are explained so as to be easily understood by those skilled in the art.
Graphene: is one in sp2The new material with a single-layer two-dimensional honeycomb lattice structure formed by tightly stacking hybridized and connected carbon atoms has excellent optical, electrical and mechanical properties, has important application prospects in the aspects of materials science, micro-nano processing, energy, biomedicine, drug delivery and the like, and is considered to be a revolutionary material in the future.
As an embodiment, a temperature control system of a graphene heating material is disclosed, the system including:
a starting unit for calculating a temperature curve slope K of the graphene heating materialnThe instant value of (A) judging whether to start the temperature control unit, the slope K of the temperature curvenIs measured as a real-time valueSlope K of the time-temperature curvenN is equal to the number of times of calculating the slope of the temperature curve, and n is a natural number greater than 1;
a temperature control unit for controlling the temperature of the graphene heating material according to the temperature curve slope KnThe output voltage increment of the power supply is adjusted by the real-time numerical value, and the voltage increment is the difference between the voltage during detection and the voltage during last detection; and the change rate P according to the temperature curve slope of the graphene heating materialiThe magnitude of the output voltage of the power supply and the change rate P of the slope of the temperature curveiThe instantaneous absolute value of (A) is the slope change rate P of the temperature curve during calculationiThe change rate of the temperature curve slope is the ratio of the difference between the temperature curve slope in the calculation and the temperature curve slope in the last calculation to the interval time between the two calculations, i is equal to the number of times of calculating the change rate of the temperature curve slope, and i is a natural number greater than 1.
As another embodiment, fig. 1 shows a flowchart of a temperature control method for a graphene heat-generating material, and as shown in fig. 1, the method includes the following steps:
step A, starting the step, namely, according to the temperature curve slope K of the graphene heating materialnThe instant value of (a) judging whether to execute the temperature control step, the slope K of the temperature curvenThe real-time value is the slope K of the temperature curve during measurementnN is equal to the number of times of calculating the slope of the temperature curve, and n is a natural number greater than 1;
step B, temperature control:
b1, according to the temperature curve gradient K of the graphene heating materialnThe output voltage increment of the power supply is adjusted by the real-time numerical value, and the voltage increment is the difference between the voltage during detection and the voltage during last detection;
b2, rate of change P according to the temperature curve slope of the graphene exothermic materialiThe magnitude of the output voltage of the power supply and the change rate P of the slope of the temperature curveiThe instantaneous absolute value of (A) is the slope change rate P of the temperature curve during calculationiAbsolute value of (d), rate of change of slope of said temperature curveI is the ratio of the difference between the slope of the temperature curve in the calculation and the slope of the temperature curve in the last calculation to the interval time of the two calculations, and is equal to the number of times of calculating the change rate of the slope of the temperature curve, and i is a natural number greater than 1.
Specifically, adopt the USB interface to connect graphite alkene heating material and portable battery, input voltage sets up to 5V, uses the model to be STM32F030F4P 6's singlechip and the model is DS18B 20's temperature sensor to carry out the experiment, and this temperature sensor's measuring accuracy is one in ten thousandth. Fig. 2 is a temperature-time curve of a graphene heating material, and fig. 3 is a temperature curve slope-time curve of the graphene heating material. In the experiment, the temperature of a certain batch of graphene heating materials needs to be raised from 10 ℃ to 40 ℃, the temperature-time curve of the batch of graphene film sheets is shown in fig. 2, and the median temperature T can be obtained0Equal to 25 ℃, corresponding to a slope KnIf the temperature curve is equal to 0.6, setting the temperature curve slope K of the batch of graphene heating materialsnThe threshold value of (2) is 0.6.
Switch on, begin the start-up procedure, transfer 7.2V at utmost with the output voltage of power, carry out rapid heating to graphite alkene heating material, set up the timer time and be 3s, gather temperature data every 3s promptly, temperature sensor begins the temperature measurement, and concrete step is:
a100, starting a delay program, and setting a delay time of 600 ms;
a200, starting the temperature acquisition program;
a300, calculating the slope K of the temperature curvenN is equal to the number of times of calculating the slope of the temperature curve, and n is a natural number greater than 1;
a400, comparing the temperature curve slope KnThe instantaneous value and the temperature curve slope threshold value K0If K isn>K0Turning to step A100, otherwise, turning to a temperature control step, namely step B. When the power supply heats the graphene heating material for about 1 minute, the temperature exceeds 40 ℃, the corresponding slope of the temperature curve is 0.57 and is less than the slope K of the temperature curvenThe threshold value of 0.6, the system exits the starting program and enters the temperature control program.
In particular toIn step B1, the temperature curve slope K of the graphene exothermic material is determinednThe method for adjusting the output voltage increment of the power supply by the instant numerical value comprises the following steps:
b101, setting initial voltage increment dir of the power supply0Is-1, i.e., the voltage increment is negative;
b102, starting a delay program, and setting a delay time of 600 ms;
b103, starting a temperature acquisition program;
b104, calculating the slope K of the temperature curven；
B105, reading the voltage increment, if the instant numerical value dir (n) of the voltage increment is 1, namely the voltage increment is a positive value, turning to the step B106, otherwise, turning to the step B108, wherein the instant numerical value dir (n) of the voltage increment is the numerical value of the voltage increment dir during monitoring;
b106, calculating the slope K of the temperature curvenAnd the slope threshold K of the temperature curve0Making a comparison if Kn>K0Go to step B107, otherwise go to step B2;
b107, setting the instant value dir (n) of the voltage increment to be-1, namely adjusting the voltage increment to be a negative value, and turning to the step B2;
b108, calculating the slope K of the temperature curvenAnd the negative value-K of the slope threshold of the temperature curve0Making a comparison if Kn<-K0Go to step B109, otherwise go to step B2;
b109, setting the instantaneous value dir (n) of the voltage increment to 1, i.e., adjusting the voltage increment to a positive value, and proceeding to step B2.
Specifically, in step B2, the rate of change P according to the slope of the temperature curve of the graphene exothermic materialiThe method for adjusting the output voltage of the power supply by the absolute value of the voltage is as follows:
b201, calculating the change rate P of the temperature curve slope of the graphene heating materialiAnd the rate of change P of the temperature slopeiIs compared if | Pi|<Q, then maintain the existing voltage unchanged, go to step 102, and reverseThen, go to step 202;
FIG. 4 is a graph of absolute value of a change rate of a slope of a temperature curve of a graphene exothermic material versus time, as shown in FIG. 4, a change rate P of a slope of a temperature curveiThe threshold Q of the absolute value of (2) will vary according to the fluctuation range of the final temperature, the larger the Q is, the larger the fluctuation of the final temperature is, otherwise the smaller the final temperature is, the higher the temperature control accuracy is. According to actual measurement, the value range of Q is proper between 0.003 and 0.01, and in the experiment, Q is set to be equal to 0.003.
B202, comparing the change rate P of the slope of the temperature curveiThe instantaneous value of the absolute value of (b) and the magnitude of beta, if | Pi|<β, go to step B203, otherwise go to step B204;
here, the value of β is not so much related to hardware, but is generally set to be 10 times or more the Q value, β mainly affects the scaling factor of the control program, and β is set to 0.03 in this experiment.
B203, setting the coefficient a to Y, here, setting Y to 20, going to step B207, Y being a constant;
b204, comparing the change rate P of the slope of the temperature curveiThe instantaneous value of the absolute value of (c) and the magnitude of ε, if | Pi|>β, go to step B205, otherwise go to step B206;
here, ε is generally selected by the temperature curve slope threshold K in the temperature curve slope-time curve shown in FIG. 30The absolute value (| p |) of the change rate corresponding to the midpoint value of the maximum value Kmax of the temperature curve is used as a reference, the value of epsilon may influence the speed of the graphene film sheet at the beginning of heating, and generally needs to be properly adjusted according to the actual situation, and in the experiment, epsilon is set to be 0.8.
B205, setting the coefficient a to X, where X is set to 0.4, go to step B207, where X is a constant;
b206, setting the coefficient a to Z, where Z is set to 6, and going to step B207, Z is a constant;
b207, if the instantaneous value dir (n) of the voltage increment is 1, go to step B208, otherwise go to step B209;
b208, increasing the output voltage (a × p |) V of the power supply, and returning to the step B102, wherein V is a unit volt of voltage;
b209, the output voltage (a × | p |) V of the power supply is decreased, and the process returns to step B102.
Here, a is a scaling factor of the control program, the value of a is mainly affected by the boosting range and precision of the boosting circuit, and the value range of a is determined in 3 cases below. In this experiment, when the value of | p | is smaller than β, a is set to a value Y larger than 1; when the value of | p | is greater than ε, a is a value X less than 1; when | p | is between ε and β, then a is set to a value Z between X and Y. The voltage regulation of the single chip microcomputer can be better controlled by selecting the value of the scaling coefficient a according to different situations, so that the temperature of the dictation heating material is more stably controlled.
As another embodiment, a computer-readable storage medium is disclosed, in which a computer-executable program is stored, the computer-executable program, when executed by a computer, for implementing the method of any one of claims 2 to 5, the method comprising:
step A, starting the step, namely, according to the temperature curve slope K of the graphene heating materialnThe instant value of (A) judging whether to start the temperature control program, the slope K of the temperature curvenThe real-time value is the slope K of the temperature curve during measurementnN is equal to the number of times of calculating the slope of the temperature curve, and n is a natural number greater than 1;
step B, temperature control:
b1, according to the temperature curve gradient K of the graphene heating materialnThe output voltage increment of the power supply is adjusted by the real-time numerical value, and the voltage increment is the difference between the voltage during detection and the voltage during last detection;
b2, rate of change P according to the temperature curve slope of the graphene exothermic materialiThe magnitude of the output voltage of the power supply and the change rate P of the slope of the temperature curveiThe instantaneous absolute value of (A) is the slope change rate P of the temperature curve during calculationiI is equal to the number of times the rate of change of the slope of the temperature curve is calculated, said slope of the temperature curveThe change rate of (a) is the ratio of the difference between the slope of the temperature curve in the calculation and the slope of the temperature curve in the last calculation to the time interval between the two calculations, and i is a natural number greater than 1.
While the present disclosure has been described in considerable detail and with particular reference to a few illustrative embodiments thereof, it is not intended to be limited to any such details or embodiments or any particular embodiments, but it is to be construed as effectively covering the intended scope of the disclosure by providing a broad, potential interpretation of such claims in view of the prior art with reference to the appended claims. Furthermore, the foregoing describes the disclosure in terms of embodiments foreseen by the inventor for which an enabling description was available, notwithstanding that insubstantial modifications of the disclosure, not presently foreseen, may nonetheless represent equivalent modifications thereto.
Claims (6)
1. A temperature control system of graphite alkene heating material, its characterized in that, the system includes:
a starting unit for calculating a temperature curve slope K of the graphene heating materialnThe instant value of (A) judging whether to start the temperature control unit, the slope K of the temperature curvenThe real-time value is the slope K of the temperature curve during measurementnN is equal to the number of times of calculating the slope of the temperature curve, and n is a natural number greater than 1;
a temperature control unit for controlling the temperature of the graphene heating material according to the temperature curve slope KnThe output voltage increment of the power supply is adjusted by the real-time numerical value, and the voltage increment is the difference between the voltage during detection and the voltage during last detection; and the change rate P according to the temperature curve slope of the graphene heating materialiThe magnitude of the output voltage of the power supply and the change rate P of the slope of the temperature curveiThe instantaneous absolute value of (A) is the slope change rate P of the temperature curve during calculationiThe change rate of the temperature curve slope is the ratio of the difference between the temperature curve slope in the calculation and the temperature curve slope in the last calculation to the interval time between the two calculations, i is equal to the number of times of calculating the change rate of the temperature curve slope, and i is a natural number greater than 1.
2. The temperature control method of the graphene exothermic material according to claim 1, wherein the method comprises the following steps:
step A, starting the step, namely, according to the temperature curve slope K of the graphene heating materialnThe instant value of (a) judging whether to execute the temperature control step, the slope K of the temperature curvenThe real-time value is the slope K of the temperature curve during measurementnN is equal to the number of times of calculating the slope of the temperature curve, and n is a natural number greater than 1;
step B, temperature control:
b1, according to the temperature curve gradient K of the graphene heating materialnThe output voltage increment of the power supply is adjusted by the real-time numerical value, and the voltage increment is the difference between the voltage during detection and the voltage during last detection;
b2, rate of change P according to the temperature curve slope of the graphene exothermic materialiThe magnitude of the output voltage of the power supply and the change rate P of the slope of the temperature curveiThe instantaneous absolute value of (A) is the slope change rate P of the temperature curve during calculationiThe change rate of the temperature curve slope is the ratio of the difference between the temperature curve slope in the calculation and the temperature curve slope in the last calculation to the interval time between the two calculations, i is equal to the number of times of calculating the change rate of the temperature curve slope, and i is a natural number greater than 1.
3. The temperature control method of the graphene exothermic material according to claim 2, wherein in the step A, the step of starting is performed according to a temperature curve slope K of the graphene exothermic materialnThe method for judging whether to execute the temperature control step by the instant numerical value comprises the following steps:
a100, starting a time delay program;
a200, starting a temperature acquisition program;
a300, calculating the slope K of the temperature curvenN is equal to the number of times of calculating the slope of the temperature curve, and n is a natural number greater than 1;
a400, comparing the temperature curve slope KnThe instantaneous value and the temperature curve slope threshold value K0If K isn>K0Go to step a100, otherwise go to step B.
4. The temperature control method for the graphene exothermic material according to claim 2, wherein in step B1, the slope K of the temperature curve of the graphene exothermic material is determinednThe method for adjusting the increment of the output voltage of the power supply by the instant numerical value comprises the following steps:
b101, setting initial voltage increment dir of the power supply0Is-1, i.e., the voltage increment is negative;
b102, starting a delay program;
b103, starting a temperature acquisition program;
b104, calculating the slope K of the temperature curven；
B105, reading the voltage increment, if the instant numerical value dir (n) of the voltage increment is 1, namely the voltage increment variation is a positive value, turning to the step B106, otherwise, turning to the step B108, wherein the instant numerical value dir (n) of the voltage increment is the numerical value of the voltage increment dir during monitoring;
b106, calculating the slope K of the temperature curvenAnd the slope threshold K of the temperature curve0Making a comparison if Kn>K0Go to step B107, otherwise, go to step B;
b107, setting the instant value dir (n) of the voltage increment to be-1, namely adjusting the voltage increment to be a negative value, and turning to the step B2;
b108, calculating the slope K of the temperature curvenAnd the negative value-K of the slope threshold of the temperature curve0Making a comparison if Kn<-K0Go to step B109, otherwise go to step B2;
b109, setting the instantaneous value dir (n) of the voltage increment to 1, i.e., adjusting the voltage increment to a positive value, and proceeding to step B2.
5. The temperature control method of the graphene exothermic material according to claim 2, wherein the temperature control method is characterized in thatIn step B2, the change rate P of the slope of the temperature curve of the graphene exothermic material is determinediThe method for adjusting the output voltage of the power supply by the absolute value of the voltage is as follows:
b201, calculating the change rate P of the temperature curve slope of the graphene heating materialiAnd the rate of change P of the temperature slopeiIs compared if | Pi|<Q, then the existing voltage is maintained unchanged, and the step B102 is switched to, otherwise, the step B202 is switched to;
b202, comparing the change rate P of the slope of the temperature curveiThe instantaneous value of the absolute value of (b) and the magnitude of beta, if | Pi|<β, go to step B203, otherwise go to step B204;
b203, setting the coefficient a to Y, and going to step B207, wherein Y is a constant;
b204, comparing the change rate P of the slope of the temperature curveiThe instantaneous value of the absolute value of (c) and the magnitude of ε, if | Pi|>β, go to step B205, otherwise go to step B206;
b205, setting the coefficient a to X, and going to step B207, where X is a constant;
b206, setting the coefficient a to Z, and going to step B207, where Z is a constant;
b207, if the instantaneous value dir (n) of the voltage increment is 1, go to step B208, otherwise go to step B209;
b208, increasing the output voltage (a × p |) V of the power supply, and returning to the step B102, wherein V is a voltage unit volt;
b209, the output voltage (a × | p |) V of the power supply is decreased, and the process returns to step B102.
6. A computer-readable storage medium in which a computer-executable program is stored, the computer-executable program, when executed by a computer, for implementing the method of any one of claims 2 to 5, the method comprising:
step A, starting the step, namely, according to the temperature curve slope K of the graphene heating materialnThe real-time value of (a) judging whether to start a temperature control program, the temperatureSlope K of the degree curvenThe real-time value is the slope K of the temperature curve during measurementnN is equal to the number of times of calculating the slope of the temperature curve, and n is a natural number greater than 1;
step B, temperature control:
b1, according to the temperature curve gradient K of the graphene heating materialnThe increment of the output voltage of the power supply is adjusted by the real-time numerical value, and the voltage increment is the difference between the voltage during detection and the voltage during last detection;
b2, rate of change P according to the temperature curve slope of the graphene exothermic materialiThe magnitude of the output voltage of the power supply and the change rate P of the slope of the temperature curveiThe instantaneous absolute value of (A) is the slope change rate P of the temperature curve during calculationiThe change rate of the temperature curve slope is the ratio of the difference between the temperature curve slope in the calculation and the temperature curve slope in the last calculation to the interval time between the two calculations, i is equal to the number of times of calculating the change rate of the temperature curve slope, and i is a natural number greater than 1.
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