CN116700388A - Device with heating function and temperature compensation method thereof - Google Patents
Device with heating function and temperature compensation method thereof Download PDFInfo
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- CN116700388A CN116700388A CN202310716126.8A CN202310716126A CN116700388A CN 116700388 A CN116700388 A CN 116700388A CN 202310716126 A CN202310716126 A CN 202310716126A CN 116700388 A CN116700388 A CN 116700388A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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Abstract
The invention relates to the technical field of heating equipment, in particular to equipment with a heating function and a temperature compensation method thereof, and aims to solve the problem that the temperature sensor of the existing equipment with the heating function is limited by the structure of the temperature sensor, so that the deviation between the temperature measured by the temperature sensor and the actual temperature inside the equipment occurs, and the inside of the equipment cannot reach the target temperature. For this purpose, the apparatus with heating function of the present invention includes a heating module capable of heating the apparatus and a temperature sensor capable of detecting the temperature of the apparatus, and the temperature compensation method includes: and controlling the heating module to heat the equipment to a target temperature Q2 according to data Q1 acquired by the temperature sensor, recording the data of the temperature sensor as P1 after Q1 reaches Q2, recording the data of the temperature sensor as P2 after the time T1 passes, calculating a difference value delta P between P1 and P2, and reassigning the sum of Q1 and delta P to Q1 so as to compensate the deviation between the internal temperature of the equipment and the target temperature.
Description
Technical Field
The invention relates to the technical field of heating equipment, and particularly provides equipment with a heating function and a temperature compensation method thereof.
Background
The existing equipment with heating function is usually connected with a temperature sensor, the temperature of equipment heating is detected through the temperature sensor, and the heating state of a heating module is controlled according to the temperature, but the condition that the temperature sensor is influenced by the external environment temperature to cause the detected temperature to be inconsistent with the actual temperature exists, a constant temperature incubator is taken as an example, the existing constant temperature incubator generally adopts a PT100 platinum resistance sensor, the structure of the PT100 platinum resistance sensor is limited, the PT100 is usually inserted into the inner container of the constant temperature incubator, the PT100 is fixed by nuts at the front and the back, and the rear half part of a PT100 probe is more or less left outside the incubator.
When the external environment temperature changes, the temperature of the PT100 probe outside the box changes, so that the overall temperature of the PT100 probe is influenced, the temperature change of the PT100 probe is fed back to the main board, the display temperature also changes, the display temperature deviates from a set value at the moment, in order to ensure that the display temperature is consistent with the set value, the program controls the heating block to increase or decrease the power, so that the overall temperature in the box rises or falls, and finally, the display temperature is unaffected, but the temperature in the box deviates, so that the deviation between the temperature in the box and the target temperature occurs.
Accordingly, there is a need in the art to provide a new ambient temperature compensation method to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to solve the technical problems that the temperature sensor of the traditional equipment with the heating function is limited by the structure thereof, so that the deviation between the temperature measured by the temperature sensor and the actual temperature inside the equipment occurs, and the inside of the equipment cannot reach the target temperature.
In a first aspect, the present invention provides a temperature compensation method for an apparatus having a heating function, the apparatus including a heating module capable of heating the apparatus and a temperature sensor capable of detecting a temperature of the apparatus, the temperature compensation method comprising: acquiring data Q1 of the temperature sensor; calculating a difference delta Q between the target temperatures Q2 and Q1; comparing the delta Q with a first preset difference A; selectively recording the data of the temperature sensor as P1 according to the comparison result of delta Q and A, and recording the data of the temperature sensor as P2 after the time T1; calculating a difference delta P between P1 and P2; comparing the absolute value of delta P with a second preset difference B; the sum of Q1 and ΔP is selectively reassigned to Q1 based on the comparison of ΔP and B.
In a specific embodiment of the above-mentioned temperature compensation method for an apparatus having a heating function, the step of "selectively recording the data of the temperature sensor as P1 according to the comparison result of Δq and a, and recording the data of the temperature sensor as P2 at this time after each lapse of time T1" further includes: when Δq is less than or equal to the first preset difference a, recording the data of the temperature sensor as P1, and recording the data of the temperature sensor as P2 after the time T1.
In a specific embodiment of the above-mentioned temperature compensation method for an apparatus having a heating function, the step of recording the data of the temperature sensor as P1 when Δq is equal to or less than a first preset difference value a, and recording the data of the temperature sensor as P2 after the lapse of time T1 further includes: when Δq is equal to or less than the first preset difference a and the duration reaches T2, the data of the temperature sensor is recorded as P1, and the data of the temperature sensor at this time is recorded as P2 after the lapse of time T1.
In a specific embodiment of the above temperature compensation method for a device having a heating function, the temperature compensation method further includes: after acquiring the data Q1 of the temperature sensor, comparing the magnitude of the Q1 with the magnitude of the target temperature Q2; and selectively controlling the heating module to heat according to the comparison result of Q1 and Q2.
In a specific embodiment of the above temperature compensation method for an apparatus having a heating function, the step of selectively controlling the heating module to heat according to the determination results of Q1 and Q2 further includes: and when Q2 is greater than Q1, controlling the heating module to heat.
In a specific embodiment of the above temperature compensation method for a device with a heating function, the device further includes a door module, and the temperature compensation method further includes: after acquiring the data Q1 of the temperature sensor, judging whether the door module is closed or not; when the gate module is in a closed state, the magnitude of the target temperature Q2 is compared with the magnitude of the target temperature Q1.
In a specific embodiment of the above temperature compensation method for a device with a heating function, the device further includes a door module, and the temperature compensation method further includes: after acquiring the data Q1 of the temperature sensor, judging whether the door module is closed or not; and when the door module is in an open state, controlling the heating module not to heat.
In a specific embodiment of the above temperature compensation method for an apparatus having a heating function, the step of "acquiring the data Q1 of the temperature sensor" further includes: data Q1, T3 < T1 and T3 < T2 of the temperature sensor are acquired once per elapsed time T3.
In a specific embodiment of the above temperature compensation method for a device having a heating function, the step of selectively reassigning the sum of Q1 and Δp to Q1 according to the comparison result of Δp and B further includes: and when the absolute value of delta P is larger than or equal to a second preset difference value B, reassigning the sum of Q1 and delta P to Q1.
In a specific embodiment of the above temperature compensation method for a device having a heating function, the step of selectively reassigning the sum of Q1 and Δp to Q1 according to the comparison result of Δp and B further includes: when the absolute value of Δp is smaller than the second preset difference B, Δp=0 is assigned to Δp, and the sum of Q1 and Δp is reassigned to Q1.
Under the condition that the technical scheme is adopted, the invention can make up the deviation between the internal temperature of the equipment and the target temperature caused by the error in the temperature measured by the temperature sensor, in particular, during the heating process of the equipment, firstly, the temperature Q1 in the equipment is obtained by the temperature sensor, then the Q1 is compared with the target temperature Q2, when the Q1 is smaller than the Q2, the heating module is controlled to continue heating, when the Q1 reaches the vicinity of the Q2 and the difference delta Q between the Q2 and the Q1 is smaller than the first preset difference A, the temperature in the equipment is considered to reach the target temperature, at the moment, the heating of the heating module is stopped, the data recorded by the temperature sensor is P1 (the data recorded by the temperature sensor can be approximately equal to the Q2), the data recorded by the temperature sensor is P2 (namely, the Q1 at the moment is obtained after the time T1 is passed, the P1 and the difference delta P is obtained, at this time, Δp is a change in data measured by the temperature sensor due to a change in external environment of a portion of the temperature sensor left outside the apparatus after stopping heating, instead of a change in actual temperature inside the apparatus (described herein as an example of an external temperature decrease), the external temperature decrease causes the temperature data acquired by the temperature sensor to be smaller, and since the data acquired by the temperature sensor can control the heating state of the heating module, when the temperature data Q1 measured by the temperature sensor is smaller than the target temperature Q2 and the difference Δq between Q2 and Q1 is greater than the first preset difference a, the program determines that the temperature inside the apparatus does not reach the target temperature Q2, and thus controls the heating module to start heating the apparatus, but since the temperature inside the apparatus itself is not changed, it is still in the vicinity of the target temperature Q2, in this way, the temperature inside the device exceeds the target temperature Q2, so in order to avoid this situation, in this embodiment, the sum of the change Δp of the data measured by the temperature sensor and the temperature data Q1 measured by the temperature sensor due to the change of the external environment is reassigned to Q1, so that the value of Q1 is the temperature value before the change of the external temperature, so that the difference Δq between the target temperatures Q2 and Q1 is again smaller than the first preset difference a, and the heating module stops heating, so as to ensure that the temperature inside the device is near the target temperature Q2.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a flow chart of the main steps of the temperature compensation method for a device with heating function of the present invention;
FIG. 2 is a detailed step flow diagram of a first embodiment of the present invention;
FIG. 3 is a detailed step flow diagram of a second embodiment of the present invention;
fig. 4 is a detailed step flow diagram of a third embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. Those skilled in the art can adapt it as desired to suit a particular application. For example, although described in the specification as an incubator, it is apparent that the present invention can employ various other devices having a heating function.
It should be noted that in the description of the present invention, furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 and 2, in order to solve the problem that the temperature measured by the temperature sensor deviates from the actual temperature inside the device due to the limitation of the structure of the temperature sensor of the conventional device with a heating function, so that the interior of the device cannot reach the target temperature, taking an incubator as an example, the incubator of the present invention comprises a heating module capable of heating the incubator and a temperature sensor capable of detecting the temperature inside the incubator, and the temperature compensation method comprises:
s01, acquiring data Q1 of a temperature sensor;
s02, comparing the magnitude of the Q1 with the magnitude of the target temperature Q2;
s03, selectively controlling the heating module to heat according to the comparison result of the Q1 and the Q2;
step S03 further includes:
s031, when Q2 is larger than Q1, controlling the heating module to heat;
s04, calculating a difference delta Q between the target temperatures Q2 and Q1;
s05, comparing the delta Q with a first preset difference A;
s06, selectively recording the data of the temperature sensor as P1 according to the comparison result of the delta Q and the A, and recording the data of the temperature sensor as P2 after the time T1;
step S06 further comprises:
s061, when the delta Q is smaller than or equal to a first preset difference value A, recording the data of the temperature sensor as P1, and recording the data of the temperature sensor as P2 after the time T1;
s07, calculating a difference delta P between P1 and P2;
s08, comparing the absolute value of the delta P with a second preset difference B;
s09, selectively reassigning the sum of Q1 and delta P to Q1 according to the comparison result of delta P and B.
Step S09 further includes:
s091, when the absolute value of the delta P is larger than or equal to a second preset difference B, reassigning the sum of the Q1 and the delta P to the Q1;
s092, when the absolute value of Δp is smaller than the second preset difference B, assigning Δp=0 to Δp, and reassigning the sum of Q1 and Δp to Q1.
It should be noted that, in the case of the above embodiment, in which the temperature Q1 inside the oven is first obtained by the temperature sensor during the heating of the oven, and then Q1 is compared with the target temperature Q2, the heating module is controlled to continue heating when Q1 is smaller than Q2, the temperature inside the oven is considered to have reached the target temperature when Q1 reaches the vicinity of Q2 and the difference Δq between Q2 and Q1 is smaller than the first preset difference a, at which time the heating of the heating module is stopped and the data of the temperature sensor is recorded as P1 (here P1 may be approximately equal to Q2), after the time T1, recording the data of the temperature sensor as P2 (namely Q1 at the moment), comparing P1 with P2 and obtaining a difference value delta P, wherein delta P is the change of the data measured by the temperature sensor due to the change of the external environment instead of the change of the actual temperature inside the incubator caused by the change of the external environment after stopping heating, the temperature data acquired by the temperature sensor is smaller due to the reduction of the external temperature, the heating module can start heating the incubator when the temperature data Q1 measured by the temperature sensor is smaller than the target temperature Q2 and the difference value delta Q between Q2 and Q1 is larger than the first preset difference value A, in order to avoid the situation that the temperature inside the incubator exceeds the target temperature Q2, the sum of the change Δp of the data measured by the temperature sensor and the temperature data Q1 measured by the temperature sensor is reassigned to Q1 according to the embodiment, so that the value of Q1 is the temperature value before the change of the external temperature, that is, the deviation correction of the temperature detected by the temperature sensor is completed, so that the difference between the target temperatures Q2 and Q1 is smaller than the first preset difference a again, the heating module stops heating, the temperature inside the incubator is guaranteed to be near the target temperature Q2, the absolute value of Δp is judged before the sum of Δp and Q1 is reassigned to Q1 according to the embodiment, and when the absolute value of Δp is larger than or equal to the second preset difference B, the sum of Q1 and Δp is reassigned to Q1 to complete the deviation correction, when the absolute value of Δp is smaller than the second preset difference B, Δp=0 is assigned to Δp, and the sum of Q1 and Δp is reassigned to Q1, so that when the value of Δp is so small that even if the external environment changes, but the amount of change does not make the difference Δq between Q2 and Q1 larger than the first preset difference a, the change in the indication of the temperature sensor caused by the external environment can be ignored, and only when the value of Δp is sufficiently large, that is, the change in the temperature of the external environment has a large influence on the indication of the temperature sensor, the sum of Δp and Q1 is reassigned to Q1 to perform the deviation correction, so that the frequency of program execution deviation correction is reduced on the premise that the function of deviation correction is ensured, the requirement on the operation capability of the controller is reduced.
In addition, regarding the magnitude relation between the first preset difference a and the second preset difference B, those skilled in the art will understand that the second preset difference B should be smaller than the first preset difference a, so that Δq is not greater than a when Δp is greater than or equal to B, and therefore, deviation correction is preferentially performed and the heating module is not started to perform heating.
In addition, the above embodiment is described by taking the decrease of the external temperature as an example, it will be understood by those skilled in the art that when the external temperature increases, the indication of the temperature sensor will be higher than the temperature inside the incubator, and since the heating module does not have the capability of cooling the incubator, the temperature inside the incubator will not change and thus the problem mentioned in the present invention will not occur, and in general, the temperature inside the incubator will be reached after the heating module heats, and the ambient temperature will not normally reach this temperature, and therefore the increase of the external temperature will not have a great influence on the indication of the temperature sensor under the condition that the temperature sensor is already at a relatively high temperature, and this situation will not be considered in the present embodiment.
Having described the primary embodiments of the present invention, reference is made to the following preferred embodiments of the present invention.
Referring now to fig. 1 and 3, in one possible implementation, step S061 further includes:
s0611, when the delta Q is smaller than or equal to a first preset difference A and the duration reaches T2, recording the data of the temperature sensor as P1, and recording the data of the temperature sensor as P2 after the time T1;
step S01 further comprises:
s011, acquiring data Q1, T3 < T1 and T3 < T2 of the temperature sensor once every time T3 passes.
In the case of the above embodiment, the heating by the heating module is stopped only when Δq is equal to or less than the first preset difference a and the duration reaches T2, and the data of the temperature sensor is recorded as P1, and the data of the temperature sensor at this time is recorded as P2 after the time T1 has elapsed, since the temperature sensor does not instantaneously reach a very stable temperature and remains unchanged when the temperature of the oven is acquired, it is generally the case that the temperature in the oven reaches a temperature value slightly exceeding the target temperature under the heating by the heating module, then slowly drops to and fluctuates around the target temperature, and finally gradually stabilizes around the target temperature, and the temperature change in this process is a relatively slow process, and therefore, in this embodiment, the condition of judging whether the duration reaches T2 is increased when Δq is equal to or less than the first preset difference a, the temperature in the oven is stabilized around the target temperature when the duration T2 is reached, and the temperature fluctuation in the oven is not stabilized to a large range, and the future temperature fluctuation P2 can be completed, and the future temperature fluctuation can be prepared.
The advantages of the above embodiment are: the condition that deviation correction is performed erroneously due to the conclusion that the absolute value of deltap is equal to or larger than the second preset difference value B even if the external environment is not changed due to temperature fluctuation in the incubator is avoided. In addition, since it is required to satisfy that Δq is equal to or less than the first preset difference a for a duration of time of reaching T2, it is required to acquire the temperature in the oven a plurality of times within the duration of T2, so that the period T3 of acquiring the data Q1 of the temperature sensor once should be smaller than T2, and on the other hand, since it is required to acquire P2 once every time T1 passes for detecting whether or not the indication of the temperature sensor has a deviation due to the temperature change of the external environment, and each time Q1 passes T3 is acquired due to the heating of the heating module during the heating, since the indication change of the temperature sensor due to the external environment is slower than the change of the indication of the temperature sensor due to the heating module, it is not necessary to acquire P2 too frequently, and the acquisition period for P2 should be longer than the acquisition period for Q1, so that T3 < T1 is set in the present embodiment.
In a possible embodiment, the incubator further comprises a door module, as shown in fig. 1 and 4, and step S01 further comprises:
s012, judging whether the door module is closed;
s013, comparing the magnitude of the Q1 and the target temperature Q2 when the door module is in a closed state;
s014, when the door module is in the open state, the heating module is controlled not to heat.
Since the application object of the present invention is an incubator, there is a certain requirement for sealability in the heating process of the incubator, and in the case of the above embodiment, a step of judging the open/close state of the door module of the incubator is added before the heating module is controlled to perform heating, when the door module is in the closed state, the magnitudes of Q1 and the target temperature Q2 are continuously judged, and when Q2 is greater than Q1, the heating module is controlled to perform heating, and when the door module is in the open state, the heating module is controlled not to perform heating.
The advantages of the above embodiment are: the heating efficiency of the incubator is guaranteed, the heat loss caused by the opening of the door module is avoided, and the situation that the user is scalded in the heating process of the incubator due to the opening of the door module is avoided.
It should be noted that the above-mentioned embodiments are merely for illustrating the principles of the present invention, and are not intended to limit the scope of the invention, and those skilled in the art can modify the above-mentioned structure to apply the present invention to more specific application scenarios without departing from the principles of the present invention.
Finally, it should be noted that although the invention has been described by way of example in terms of an incubator, the device with heating function of the invention can obviously also be other devices. For example, an oven, a microwave oven, or the like is also possible.
It will be appreciated by those skilled in the art that the above-described device having a heating function also includes some other well-known structure, such as a processor, a controller, a memory, etc., wherein the memory includes, but is not limited to, random access memory, flash memory, read-only memory, programmable read-only memory, volatile memory, nonvolatile memory, serial memory, parallel memory, or registers, etc., and the processor includes, but is not limited to, a CPLD/FPGA, DSP, ARM processor, a MIPS processor, etc. These well-known structures are not shown in the drawings in order to not unnecessarily obscure the embodiments of the disclosure.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
Claims (10)
1. A temperature compensation method for a device having a heating function, the device including a heating module capable of heating the device and a temperature sensor capable of detecting a temperature of the device, the temperature compensation method comprising:
acquiring data Q1 of the temperature sensor;
calculating a difference delta Q between the target temperatures Q2 and Q1;
comparing the delta Q with a first preset difference A;
selectively recording the data of the temperature sensor as P1 according to the comparison result of delta Q and A, and recording the data of the temperature sensor as P2 after the time T1;
calculating a difference delta P between P1 and P2;
comparing the absolute value of delta P with a second preset difference B;
the sum of Q1 and ΔP is selectively reassigned to Q1 based on the comparison of ΔP and B.
2. The temperature compensation method according to claim 1, wherein the step of selectively recording the data of the temperature sensor as P1 based on the comparison result of Δq and a, and recording the data of the temperature sensor as P2 at this time after the lapse of time T1, further comprises:
when Δq is less than or equal to the first preset difference a, recording the data of the temperature sensor as P1, and recording the data of the temperature sensor as P2 after the time T1.
3. The temperature compensation method according to claim 2, wherein the step of recording the data of the temperature sensor as P1 when Δq is equal to or less than a first preset difference a, and recording the data of the temperature sensor as P2 after the lapse of time T1 further comprises:
when Δq is equal to or less than the first preset difference a and the duration reaches T2, the data of the temperature sensor is recorded as P1, and the data of the temperature sensor at this time is recorded as P2 after the lapse of time T1.
4. A temperature compensation method according to any one of claims 1 to 3, characterized in that the temperature compensation method further comprises:
after acquiring the data Q1 of the temperature sensor, comparing the magnitude of the Q1 with the magnitude of the target temperature Q2;
and selectively controlling the heating module to heat according to the comparison result of Q1 and Q2.
5. The temperature compensation method according to claim 4, wherein the step of selectively controlling the heating module to heat according to the judgment results of Q1 and Q2 further comprises:
and when Q2 is greater than Q1, controlling the heating module to heat.
6. A temperature compensation method according to any one of claims 1 to 3 wherein the apparatus further comprises a door module, the temperature compensation method further comprising:
after acquiring the data Q1 of the temperature sensor, judging whether the door module is closed or not;
when the gate module is in a closed state, the magnitude of the target temperature Q2 is compared with the magnitude of the target temperature Q1.
7. A temperature compensation method according to any one of claims 1 to 3 wherein the apparatus further comprises a door module, the temperature compensation method further comprising:
after acquiring the data Q1 of the temperature sensor, judging whether the door module is closed or not;
and when the door module is in an open state, controlling the heating module not to heat.
8. A temperature compensation method according to any one of claims 1 to 3 wherein the step of acquiring the data Q1 of the temperature sensor further comprises:
data Q1, T3 < T1 and T3 < T2 of the temperature sensor are acquired once per elapsed time T3.
9. A temperature compensation method according to any one of claims 1 to 3 wherein the step of selectively reassigning the sum of Q1 and Δp to Q1 according to the comparison of Δp and B further comprises:
and when the absolute value of delta P is larger than or equal to a second preset difference value B, reassigning the sum of Q1 and delta P to Q1.
10. A temperature compensation method according to any one of claims 1 to 3 wherein the step of selectively reassigning the sum of Q1 and Δp to Q1 according to the comparison of Δp and B further comprises:
when the absolute value of Δp is smaller than the second preset difference B, Δp=0 is assigned to Δp, and the sum of Q1 and Δp is reassigned to Q1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310716126.8A CN116700388A (en) | 2023-06-15 | 2023-06-15 | Device with heating function and temperature compensation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310716126.8A CN116700388A (en) | 2023-06-15 | 2023-06-15 | Device with heating function and temperature compensation method thereof |
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| Publication Number | Publication Date |
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| CN116700388A true CN116700388A (en) | 2023-09-05 |
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| CN202310716126.8A Pending CN116700388A (en) | 2023-06-15 | 2023-06-15 | Device with heating function and temperature compensation method thereof |
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| Country | Link |
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| CN (1) | CN116700388A (en) |
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- 2023-06-15 CN CN202310716126.8A patent/CN116700388A/en active Pending
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