CN115494897A - Temperature control method, temperature control device, electronic equipment and storage medium - Google Patents
Temperature control method, temperature control device, electronic equipment and storage medium Download PDFInfo
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- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
- G05D23/32—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature with provision for adjustment of the effect of the auxiliary heating device, e.g. a function of time
Abstract
The application discloses a temperature control method, a temperature control device, electronic equipment and a storage medium, wherein the method is applied to a temperature control system and comprises a cooling device, a regulating valve and a multi-stage heating device; the cooling device is used for reducing the input gas to a first temperature, the regulating valve is used for regulating the first temperature, and the multi-stage heating device is used for carrying out multi-stage heating on the gas flowing through so as to enable the outlet temperature to meet the set requirement; the method comprises the following steps: according to the adjusting precision of the output port of the controller for controlling the opening of the adjusting valve, the relation between the opening of the adjusting valve and the volume flow and the relation between the heat exchange quantity of the cooling device and the water flow, the adjusting precision of the adjusting valve for the first temperature is confirmed, according to the adjusting precision of the output port of the controller corresponding to each stage of heating device and the relation between the output power and the opening of each stage of heating device, the adjusting precision of each stage of heating device for the output temperature is confirmed, temperature control is executed according to the adjusting precision, and the temperature control precision of the temperature control system can be improved.
Description
Technical Field
The present invention relates to the field of temperature control technologies, and in particular, to a temperature control method and apparatus, an electronic device, and a storage medium.
Background
With the development of the microelectronic industry, a stable and reliable temperature environment is needed in an ultra-precision machining scene, and ultra-precision machining equipment represented by a photoetching machine has requirements on large external environments and very strict requirements on internal micro environments.
In order to provide a stable and reliable temperature environment, a microenvironment inside the equipment is provided with independent temperature control equipment, such as air cooling and the like.
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art: the existing air cooling mode is easy to fluctuate and generate local nonuniformity in environmental fine adjustment due to the small specific heat capacity of air, so that a more accurate temperature environment cannot be provided.
Therefore, a new temperature control scheme is needed to improve the temperature control accuracy of the temperature control system.
Disclosure of Invention
The application provides a temperature control method, a temperature control device, electronic equipment and a storage medium, which can improve the temperature control precision of a temperature control system.
In a first aspect, a temperature control method is provided and applied to a temperature control system, wherein the temperature control system comprises a cooling device, a regulating valve and a multi-stage heating device; wherein the cooling device is configured to reduce the input gas to a first temperature that is lower than the temperature values of the minimum outlet temperature and the minimum inlet temperature; the regulating valve is used for regulating the first temperature; the multi-stage heating device is arranged in a gas circulation channel of the temperature control system, is positioned at the downstream of the cooling device along the gas flow direction, and is used for carrying out multi-stage heating on the gas flowing through so as to enable the outlet temperature to meet the set requirement;
the method comprises the following steps:
a first control stage: confirming the power range of the cooling device and the regulating precision of the regulating valve for the first temperature according to the regulating precision of a controller output port for controlling the opening of the regulating valve, the relation between the opening of the regulating valve and the volume flow and the relation between the heat exchange quantity of the cooling device and the water flow, and executing temperature control according to the regulating precision of the first temperature;
and a second control stage: according to the adjusting precision of the controller output port corresponding to each stage of heating device and the relation between the output power and the opening degree of each stage of heating device, confirming the power range of each stage of heating device and the adjusting precision of each stage of heating device on the output temperature, and executing temperature control according to the adjusting precision of each stage of heating device on the output temperature.
Optionally, the determining the power range of the cooling device according to the adjustment accuracy of an output port of a controller for controlling the opening degree of the adjustment valve, the relationship between the opening degree of the adjustment valve and the volume flow, and the relationship between the heat exchange amount of the cooling device and the water flow includes:
calculating the maximum heat exchange quantity of the cooling device according to the adjusting precision of an output port of a controller for controlling the opening of the adjusting valve, the relation between the opening of the adjusting valve and the volume flow and the relation between the heat exchange quantity of the cooling device and the water flow;
and determining a power range meeting the model selection rule of the cooling device according to the maximum heat exchange quantity of the cooling device.
Optionally, the model selection rule of the cooling device includes:
the maximum heat exchange quantity of the cooling device is larger than or equal to the product of the air specific heat capacity, the air density, the air quantity and a first temperature difference, and the first temperature difference is the difference value between the maximum inlet temperature and the set value of the first temperature.
Optionally, the determining, according to an adjustment accuracy of an output port of a controller for controlling an opening degree of the adjustment valve, a relationship between the opening degree of the adjustment valve and a volume flow, and a relationship between a heat exchange amount of the cooling device and a water flow, the adjustment accuracy of the adjustment valve for the first temperature includes:
and confirming the adjusting precision of the adjusting valve on the first temperature according to the opening degree of the adjusting valve, the adjusting precision of a controller output port for controlling the opening degree of the adjusting valve, the air specific heat capacity, the air density and the air volume, and according to the relation between the opening degree of the adjusting valve and the volume flow and the relation between the heat exchange quantity of the cooling device and the water flow.
Optionally, the determining the power range of each stage of heating device according to the adjustment precision of the controller output port corresponding to each stage of heating device and the relationship between the output power and the opening degree of each stage of heating device includes:
calculating the maximum heat exchange quantity of the current heating device according to the opening of the current heating device and the adjusting precision of the controller output port corresponding to the current heating device and the relation between the output power and the opening of the current heating device;
and determining a power range meeting the model selection rule of the current heating device according to the maximum heat exchange quantity of the current heating device.
Optionally, the multistage heating device includes a first stage heating device and a second stage heating device; the precision of the current heating device for adjusting the output temperature comprises the precision of the first-stage heating device for adjusting the second temperature and the precision of the second heating device for adjusting the third temperature;
the type selection rule of the primary heating device comprises the following steps: the maximum heat exchange quantity of the primary heating device is greater than or equal to a first heat exchange quantity, the first heat exchange quantity is determined according to the specific heat capacity of air, the air density, the air quantity and a second temperature difference, and the second temperature difference is the value obtained by subtracting the set value of the first temperature and the adjustment precision of the first temperature from the maximum value of the outlet temperature;
the type selection rule of the secondary heating device comprises the following steps: the maximum heat exchange quantity of the secondary heating device is larger than or equal to a second heat exchange quantity, and the second heat exchange quantity is determined according to the air specific heat capacity, the air density, the air volume and the adjusting precision of the second temperature.
Optionally, the determining, according to the adjustment accuracy of the controller output port corresponding to each stage of heating device and the relationship between the output power and the opening degree of each stage of heating device, the adjustment accuracy of each stage of heating device on the output temperature includes:
and confirming the adjustment precision of the current heating device to the output temperature according to the opening of the current heating device, the adjustment precision of the controller output port corresponding to the current heating device, the air specific heat capacity, the air density and the air volume and the relation between the output power and the opening of the current heating device.
Optionally, the performing temperature control according to the adjustment accuracy of the first temperature includes:
entering a second control stage if the current value of the first temperature meets the regulation precision of the first temperature and the maintaining time is longer than a preset time; otherwise, not entering.
In a second aspect, there is provided a temperature control apparatus comprising:
the first control module is used for confirming the power range of the cooling device and the adjusting accuracy of the adjusting valve for the first temperature according to the adjusting accuracy of the controller output port for controlling the opening of the adjusting valve, the relation between the opening of the adjusting valve and the volume flow and the relation between the heat exchange quantity of the cooling device and the water flow, and executing temperature control according to the adjusting accuracy of the first temperature;
and the second control module is used for confirming the power range of each stage of heating device and the regulating precision of each stage of heating device on the output temperature according to the regulating precision of the controller output port corresponding to each stage of heating device and the relation between the output power and the opening degree of each stage of heating device, and executing temperature control according to the regulating precision of each stage of heating device on the output temperature.
In a third aspect, an electronic device is provided, comprising a memory and a processor, the memory storing a computer program that, when executed by the processor, causes the processor to perform the steps as in the first aspect and any one of its possible implementations.
In a fourth aspect, there is provided a computer storage medium storing one or more instructions adapted to be loaded by a processor and to perform the steps of the first aspect and any possible implementation thereof.
The temperature control method in the application at least comprises the following beneficial effects: confirming the power range of the cooling device and the regulating precision of the regulating valve for the first temperature according to the regulating precision of a controller output port for controlling the opening of the regulating valve, the relation between the opening of the regulating valve and the volume flow and the relation between the heat exchange quantity of the cooling device and the water flow, and executing temperature control according to the regulating precision of the first temperature; according to the adjusting precision of the output port of the controller corresponding to the heating device and the relation between the output power and the opening degree of the heating device, the power range of the heating device and the adjusting precision of the heating device on the output temperature are confirmed, temperature control is performed according to the adjusting precision of the heating device on the output temperature, the power of each device can be controlled, so that different devices can separately perform calculation and temperature control when the total heating quantity requirement is met, the control precision of a single device is improved, and the overall temperature control precision is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.
Fig. 1 is a schematic structural diagram of a temperature control system according to an embodiment of the present disclosure;
fig. 2 is a schematic flow chart of a temperature control method according to an embodiment of the present disclosure;
FIG. 3 is an enlarged graph of the temperature control result according to the embodiment of the present application;
fig. 4 is a schematic structural diagram of a temperature control device according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device provided in the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the foregoing drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The temperature control system in the embodiment of the application mainly comprises a cooling device, a regulating valve and a heating device; wherein the cooling device is configured to reduce the input gas to a first temperature, the first temperature being lower than the minimum outlet temperature and the minimum inlet temperature; the regulating valve is used for regulating the first temperature; the heating device is arranged in a gas circulation channel of the temperature control system, is positioned at the downstream of the cooling device along the gas flow direction and is used for heating the flowing gas so as to enable the outlet temperature to meet the set requirement.
Optionally, the cooling device in the embodiment of the present application may include a chilled water coil, and the adjusting valve is a water valve; the heating devices can be hollow plate heaters, wire mesh heaters or pipe mesh heaters, the number of the used heating devices can be selected according to needs, the heating devices can be sequentially defined as a first stage, a second stage and the like according to the gas flow direction, and the temperature can be sequentially controlled to achieve the final temperature control target.
The embodiments of the present application will be described below with reference to the drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a temperature control system according to an embodiment of the present disclosure, and as shown in fig. 1, the temperature control system 100 includes: chilled water coil 110, damper 120, and heating devices, here two heating devices for example, are shown as a stage 1 heating device 130 and a stage 2 heating device 140.
Specifically, the input gas (corresponding to the inlet temperature) through the fan is cooled by the chilled water coil 110, and the output temperature is the first temperature T1; performing primary temperature adjustment through the level-1 heating device 130, wherein the output temperature is a second temperature T2; and then further temperature adjustment is performed by the 2-stage heating device 140, and the output temperature (corresponding to the final outlet temperature) is the third temperature T3.
In the embodiment of the present application, the control requirement of the temperature control system 100 is mainly that the temperature control is performed based on the inlet temperature, so that the outlet temperature can reach the outlet temperature requirement, that is, the deviation between the actual outlet temperature and the set value thereof is not greater than the preset precision.
Fig. 2 is a schematic flow chart of a temperature control method according to an embodiment of the present disclosure. As shown in fig. 2, the method may be applied to a temperature control system as shown in fig. 1, and may include:
201. confirming the power range of the cooling device and the adjusting accuracy of the adjusting valve for the first temperature according to the adjusting accuracy of the output port of the controller for controlling the opening of the adjusting valve, the relation between the opening of the adjusting valve and the volume flow and the relation between the heat exchange quantity of the cooling device and the water flow, and executing temperature control according to the adjusting accuracy of the first temperature.
202. According to the adjusting precision of the controller output port corresponding to each stage of heating device and the relation between the output power and the opening degree of each stage of heating device, confirming the power range of each stage of heating device and the adjusting precision of each stage of heating device on the output temperature, and executing temperature control according to the adjusting precision of each stage of heating device on the output temperature.
Specifically, in the embodiment of the present application, the temperature is controlled in stages, so that the final output temperature meets the target accuracy. The first control stage mainly performs precision control on the first temperature T1, the second control stage may include a plurality of sub-stages corresponding to the multi-stage heating devices, and each heating device performs precision control on the output temperature thereof.
For example, based on the embodiment shown in fig. 1, the temperature of the incoming gas is first reduced by the chilled water coil 110 to a temperature value that is lower than the minimum value of the outlet temperature, and slightly lower than the minimum value of the inlet temperature. For example, if the minimum value of the inlet temperature of the device is 20 ℃ and the minimum value of the outlet temperature of the device is 23 ℃, the temperature set point at T1 can be set to be 18 ℃, and the specific value of T1 needs to be adjusted by the adjusting valve.
The minimum value of the inlet temperature, the maximum value of the inlet temperature, the minimum value of the outlet temperature and the maximum value of the outlet temperature in the embodiment of the application are preset values and can be set as required.
In an alternative embodiment, in step 201, the confirming the adjustment accuracy of the adjustment valve for the first temperature includes:
and confirming the adjusting accuracy of the adjusting valve for the first temperature according to the opening degree of the adjusting valve, the adjusting accuracy of an output port of a controller for controlling the opening degree of the adjusting valve, the air specific heat capacity, the air density and the air volume, and the relationship between the opening degree of the adjusting valve and the volume flow and the relationship between the heat exchange quantity of the cooling device and the water flow.
In the embodiment of the application, the device type can be selected based on the heat exchange quantity.
In an alternative embodiment, in step 201, the determining the power range of the cooling device includes:
calculating the maximum heat exchange quantity of the cooling device according to the adjusting precision of an output port of a controller for controlling the opening of the adjusting valve, the relation between the opening of the adjusting valve and the volume flow and the relation between the heat exchange quantity of the cooling device and the water flow;
and determining a power range meeting the model selection rule of the cooling device according to the maximum heat exchange quantity of the cooling device.
Further optionally, the model selection rule of the cooling device includes:
the maximum heat exchange quantity of the cooling device is larger than or equal to the product of the air specific heat capacity, the air density, the air quantity and a first temperature difference, and the first temperature difference is the difference value between the maximum inlet temperature and the set value of the first temperature. The following formula may be referred to for explanation.
Specifically, in the first control stage, it is assumed that the relationship between the opening x of the regulating valve and the volume flow V is Vw = f (x), the relationship between the heat exchange amount of the cooling device and the water flow is Qc = g1 (V), the maximum heat exchange amount is Qcmax, and the air volume is V a Minimum inlet temperature of T0 min Maximum inlet temperature of T0 max The first temperature T1 is set to be T 1s The adjustment accuracy of the first temperature T1 is T1 d Air specific heat capacity of c a Air density is rho a If the adjustment accuracy (minimum accuracy) of the output port of the controller for controlling the opening degree of the adjustment valve is 1/1000, it is necessary to satisfy:
T 1s ≤T0 min (1)
Qc max ＝g1(f(1000))≥c a ·ρ a ·V a ·(T0 max -T1 s ) (2)
wherein, the above formula (1) can be understood as T 1s May be taken to be less than T0 min A proximity value of (a); the formula (2) is a model selection rule expression of the cooling device, and the power condition which needs to be met by the cooling device can be determined through calculation. The above formula (3) is simplified to obtain the first temperature adjustment accuracy T1 d The value range is as follows:
the above equations (3) and (4) can be used to calculate the adjustment accuracy range of the first temperature.
Optionally, if the current value of the first temperature meets the adjustment accuracy of the first temperature and the maintaining time is longer than a preset time, entering the second control stage; otherwise, not entering. The preset time period can be set according to needs, that is, in the embodiment of the present application, after the first temperature T1 is stable, the power and the precision of the subsequent heating device are considered.
In an alternative embodiment, in step 202, the power range of the heating device is determined, which includes:
calculating the maximum heat exchange quantity of the current heating device according to the opening of the current heating device and the adjusting precision of the controller output port corresponding to the current heating device and the relation between the output power and the opening of the current heating device;
and determining a power range meeting the model selection rule of the current heating device according to the maximum heat exchange quantity of the current heating device.
The current heating device can be one of multi-stage heating devices, and the output temperature required by the system can be finally reached through sequential regulation and control of the heating devices at all stages. The model selection rule for each stage of heating device is similar to that of the cooling device. A system provided with two stages of heating devices is exemplified here.
In an alternative embodiment, the multi-stage heating device comprises a first stage heating device and a second stage heating device; the precision of the current heating device for adjusting the output temperature comprises the precision of the first-stage heating device for adjusting the second temperature and the precision of the second heating device for adjusting the third temperature; wherein:
the type selection rule of the primary heating device comprises the following steps: the maximum heat exchange quantity of the primary heating device is greater than or equal to a first heat exchange quantity, the first heat exchange quantity is determined according to the air specific heat capacity, the air density, the air quantity and a second temperature difference, and the second temperature difference is a value obtained by subtracting the set value of the first temperature and the adjustment precision of the first temperature from the maximum value of the outlet temperature;
the type selection rule of the secondary heating device comprises the following steps: the maximum heat exchange quantity of the secondary heating device is greater than or equal to a second heat exchange quantity, and the second heat exchange quantity is determined according to the air specific heat capacity, the air density, the air volume and the adjusting precision of the second temperature.
In the case where a two-stage heating device is provided, the third temperature is the outlet temperature. In particular, the primary heating means are intended to satisfy a set value T3 for the air temperature to rise from T1 to a third temperature T3 s Nearby and a certain regulating space is left for the secondary heating device. Therefore, T2 is slightly smaller than T3 s . Maximum outlet temperature (T3) s Maximum value of) is T3 smax (this is the desired value), the minimum value of the outlet temperature is T3 smin (this is a required value), and the adjustment accuracy of T3 is T3 d (this is the desired value); assuming that the precision of the output port of the controller corresponding to the first-stage heating device is 1 per thousand, the opening of the first-stage heating device is h1, the relationship between the output power Q1 of the first-stage heating device and the opening is Q1= g2 (h 1), and the maximum output power Q1 is max And the regulation precision of T2 is T2 d . The following rules can be derived:
Q1 max ＝g2(1000)≥c a ·ρ a ·V a ·(T3 smax -T1 s -T1 d ) (5)
the formula (5) is a model selection rule expression of the primary heating device, and the power condition required to be met by the primary heating device can be determined through calculation. The above equation (6) is simplified to obtain the adjusting accuracy T2 of the second temperature d The value range is as follows:
and a set value T2 of the second temperature s With a set value T3 of the third temperature s And the adjustment accuracy T2 of the second temperature d The relationship between can be expressed as: t2 s ＝T3 s -T2 d 。
Next, the power control and the adjustment accuracy calculation of the output temperature of the secondary heating device can be performed.
In the embodiment of the application, the selection and the adjustment of the secondary heating device are relatively fine links, the adjustment of the adjusting valve and the primary heating device meets the requirement of the overall power, and the secondary heating device is finely adjusted on the basis of the front surface.
Specifically, the opening degree of the secondary heating device is h2, and the maximum output power is Q2 max The relationship between the output Q2 of the two-stage heating device and the opening degree is Q2= g3 (h 2), and the adjustment accuracy of the third temperature T3 is T3 d (ii) a And then, the precision of the output port of the controller corresponding to the secondary heating device is assumed to be 1 per mill. First, the two-stage heating device is in the most unfavorable case (i.e. the second temperature T2 is stable and is just under the lower deviation, where the lower deviation refers to the minimum temperature value determined according to the adjustment accuracy, e.g. the adjustment accuracy of T2 is [ -2, + 2)]Then, current T2= T2 setpoint-2), the power requirement needs to be met:
Q2 max ＝g3(1000)≥c a ·ρ a ·V a ·(2·T2 d ) (8)
similarly, the accuracy requirement also satisfies the following relation:
in the embodiment of the present application, the overall control scheme and strategy of the temperature control system may be as described above, in a specific implementation, because the application device and the field environment are different, the above relation may be inferred according to the actual implementation device characteristics and the driver characteristics, and adaptive adjustment may be performed to meet the system requirements, which is not limited in the embodiment of the present application.
To further explain the method in the embodiment of the present application, an actual application scenario is provided as follows, and specifically, the parameter setting may be performed in combination with the system structure shown in fig. 1, where the parameter setting includes:
(1) The minimum value of the inlet temperature of the equipment is 19 ℃;
(2) The minimum value of the outlet temperature of the equipment is 22 ℃;
(3) The T1 set point can be set to 18 ℃;
(4) The air volume is 5000m 3 /h；
(5) The water flow is 2000L/h;
(6) The refrigerating capacity of the refrigerating water coil is 5KW;
(7) The heating quantity of the 1-level heating device H1 is 5KW;
(8) The heating quantity of the 2-level heating device H2 is 1KW;
based on the description in the foregoing embodiments, the conclusions that can be drawn from the device characteristics at this time are as follows:
the relationship between the opening x of the regulating valve and the volume flow V is expressed as:
Vw＝900(1-e -0.046x )；
the relationship between the heat exchange capacity of the chilled water coil and the water flow is expressed as:
Qc＝1.05(T a -T W )*V m ；
further, the following conclusions can be drawn:
q1 and Q2 above are understood to represent the output of a stage 1 heating device and the output of a stage 2 heating device, respectively;
at this time, actual control may be performed by combining a corresponding control algorithm, for example, a PID control algorithm, based on the condition that needs to be satisfied. In practical application, other control algorithms can be selected according to needs to perform system temperature control, and the embodiment of the application does not limit the system temperature control. The PID control algorithm involved in the embodiment of the application is a control algorithm integrating three links of proportion, integration and differentiation, the operation is carried out according to the input deviation value and the functional relationship of proportion, integration and differentiation, and the operation result is used for controlling output.
The control results based on the above embodiment can be as shown in fig. 3. Fig. 3 is an enlarged graph illustrating a temperature control result according to an embodiment of the present disclosure. Wherein, the abscissa represents time, a control period (5 s) is adopted here, and the ordinate represents the system white noise-free outlet air temperature, namely the outlet temperature; the two horizontal dashed lines show the accuracy requirement for the controlled object (temperature), which is seen to be within the accuracy requirement range.
In the embodiment of the present application, based on the design logic in the foregoing embodiment, the problem of disturbance overrun of the control system and the disadvantage of excessively slow response speed can be eliminated by combining with other corresponding control algorithms, so that the temperature control accuracy can be higher.
For ultra-high precision temperature control scenarios, the requirements on the fineness of the control devices, as well as the fineness of the actuator devices, are very high. In the embodiment of the application, different execution devices such as the cooling device and the regulating valve can be separately calculated and controlled, so that the temperature control precision of a single part is improved, and the overall precision is improved. The temperature control method is generally limited by the electrical characteristics of the hardware output port of the control controller, the heating device is more finely adjusted, the total power range of the heating device is smaller, and the total heating power requirement cannot be met if the total heating power is too small.
Based on the description of the embodiment of the control method of the variable frequency air conditioner, the embodiment of the application also discloses a temperature control device. As shown in fig. 4, the temperature control apparatus 400 includes:
a first control module 410, configured to determine a power range of the cooling device and an adjustment accuracy of the adjustment valve for the first temperature according to an adjustment accuracy of an output port of a controller that controls an opening degree of the adjustment valve, a relationship between the opening degree of the adjustment valve and a volume flow, and a relationship between a heat exchange amount of the cooling device and a water flow, and perform temperature control according to the adjustment accuracy of the first temperature;
and the second control module 420 is configured to determine a power range of each stage of heating device and an adjustment accuracy of the each stage of heating device on an output temperature according to the adjustment accuracy of the controller output port corresponding to each stage of heating device and a relationship between the output power of each stage of heating device and an opening degree, and perform temperature control according to the adjustment accuracy of each stage of heating device on the output temperature.
Optionally, the first control module 410 is specifically configured to:
calculating the maximum heat exchange quantity of the cooling device according to the adjusting precision of the controller output port of the opening of the adjusting valve, the relation between the opening of the adjusting valve and the volume flow and the relation between the heat exchange quantity of the cooling device and the water flow;
and determining a power range meeting the model selection rule of the cooling device according to the maximum heat exchange quantity of the cooling device.
Optionally, the model selection rule of the cooling device includes:
the maximum heat exchange quantity of the cooling device is larger than or equal to the product of the air specific heat capacity, the air density, the air quantity and a first temperature difference, and the first temperature difference is the difference value between the maximum inlet temperature and the set value of the first temperature.
Optionally, the first control module 410 is specifically configured to:
and confirming the adjusting precision of the adjusting valve for the first temperature according to the opening degree of the adjusting valve, the adjusting precision of the controller output port of the opening degree of the adjusting valve, the specific heat capacity of air, the air density and the air volume, the relation between the opening degree of the adjusting valve and the volume flow and the relation between the heat exchange quantity of the cooling device and the water flow.
Optionally, the second control module 420 is specifically configured to:
calculating the maximum heat exchange quantity of the current heating device according to the opening degree of the current heating device and the adjusting precision of the controller output port corresponding to the current heating device and the relation between the output power and the opening degree of the current heating device;
and determining a power range meeting the model selection rule of the current heating device according to the maximum heat exchange quantity of the current heating device.
Optionally, the heating device comprises a first-stage heating device and a second-stage heating device;
the maximum heat exchange quantity of the primary heating device is greater than or equal to a first heat exchange quantity, the first heat exchange quantity is determined according to the specific heat capacity of air, the air density, the air quantity and a second temperature difference, and the second temperature difference is a value obtained by subtracting the set value of the first temperature and the adjustment precision of the first temperature from the maximum value of the outlet temperature;
the maximum heat exchange quantity of the secondary heating device is greater than or equal to a second heat exchange quantity, and the second heat exchange quantity is determined according to the air specific heat capacity, the air density, the air volume and the adjusting precision of the second temperature.
Optionally, the second control module 420 is specifically configured to:
and confirming the adjustment accuracy of the current heating device on the output temperature according to the opening of the current heating device, the adjustment accuracy of the controller output port corresponding to the current heating device, the air specific heat capacity, the air density and the air volume according to the relationship between the output power and the opening of the current heating device.
Optionally, the second control module 420 is further configured to:
entering the second control stage if the current value of the first temperature meets the regulation precision of the first temperature and the maintaining time is longer than the preset time; otherwise, not entering.
According to an embodiment of the present application, the temperature control apparatus 400 may perform the steps in the method embodiment shown in fig. 2, which are not described herein again.
Based on the description of the method embodiment and the device embodiment, the embodiment of the application further provides an electronic device. As shown in fig. 5, which is a schematic structural diagram of an electronic device provided in the present application, the electronic device 500 may include a processor 501, an input/output device 502, a memory 503, and a computer storage medium. Wherein the various component units within the electronic device may be connected by a bus 504 or otherwise.
A computer storage medium may be stored in the memory 503 of the electronic device 500, the computer storage medium being configured to store a computer program comprising program instructions, the processor 601 being configured to execute the program instructions stored by the computer storage medium. A processor (or CPU) is a computing core and a control core of an electronic device, and is adapted to implement one or more instructions, and in particular, is adapted to load and execute the one or more instructions so as to implement a corresponding method flow or a corresponding function; in one embodiment, the processor 501 described above in the embodiments of the present application may be configured to perform a series of processes, including the steps involved in the method shown in fig. 2.
An embodiment of the present application further provides a computer storage medium (Memory), which is a Memory device in an electronic device and is used to store programs and data. It is understood that the computer storage medium herein may include both a built-in storage medium in the electronic device and, of course, an extended storage medium supported by the electronic device. Computer storage media provide storage space that stores an operating system for an electronic device. Also stored in the memory space are one or more instructions, which may be one or more computer programs (including program code), suitable for loading and execution by the processor. The computer storage medium may be a high-speed RAM memory, or may be a non-volatile memory (non-volatile memory), such as at least one disk memory; and optionally at least one computer storage medium located remotely from the processor.
In one embodiment, one or more instructions stored in a computer storage medium may be loaded and executed by a processor to perform the corresponding steps in the above embodiments; in a specific implementation, one or more instructions in the computer storage medium may be loaded by the processor and execute the steps involved in the method shown in fig. 2, which are not described herein again.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described apparatuses and modules may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the division of the module is only one logical division, and other divisions may be possible in actual implementation, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not performed. The shown or discussed mutual coupling, direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
Modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)), or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a read-only memory (ROM), or a Random Access Memory (RAM), or a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, a magnetic disk, or an optical medium, such as a Digital Versatile Disk (DVD), or a semiconductor medium, such as a Solid State Disk (SSD).
Claims (11)
1. A temperature control method is applied to a temperature control system, and the method comprises the following steps:
a first control stage: confirming the power range of a cooling device and the regulation precision of a regulating valve on a first temperature according to the regulation precision of a controller output port for controlling the opening of the regulating valve of the temperature control system, the relation between the opening of the regulating valve and the volume flow and the relation between the heat exchange quantity of the cooling device of the temperature control system and the water flow, and executing temperature control according to the regulation precision of the first temperature;
and a second control stage: according to the adjusting precision of a controller output port corresponding to a heating device of the temperature control system and the relation between the output power and the opening degree of the heating device, confirming the power range of the heating device and the adjusting precision of the heating device on the output temperature, and executing temperature control according to the adjusting precision of the output temperature.
2. The temperature control method according to claim 1, wherein the confirming of the power range of the cooling device in accordance with the adjustment accuracy of the output port of the controller that controls the opening degree of the adjustment valve, the relationship between the opening degree of the adjustment valve and the volume flow rate, and the relationship between the heat exchange amount of the cooling device and the water flow rate comprises:
calculating the maximum heat exchange quantity of the cooling device according to the adjusting precision of an output port of a controller for controlling the opening of the adjusting valve, the relation between the opening of the adjusting valve and the volume flow and the relation between the heat exchange quantity of the cooling device and the water flow;
and determining a power range meeting the model selection rule of the cooling device according to the maximum heat exchange quantity of the cooling device.
3. The method of claim 2, wherein the selection rule of the cooling device comprises:
the maximum heat exchange quantity of the cooling device is larger than or equal to the product of the air specific heat capacity, the air density, the air quantity and a first temperature difference, and the first temperature difference is the difference value between the maximum inlet temperature and the set value of the first temperature.
4. The temperature control method according to claim 1, wherein the confirming of the adjustment accuracy of the adjustment valve for the first temperature in accordance with the adjustment accuracy of an output port of a controller that controls the opening degree of the adjustment valve, a relationship between the opening degree of the adjustment valve and a volume flow rate, and a relationship between a heat exchange amount of the cooling device and a water flow rate includes:
and confirming the adjusting precision of the adjusting valve on the first temperature according to the opening degree of the adjusting valve, the adjusting precision of an output port of a controller for controlling the opening degree of the adjusting valve, the air specific heat capacity, the air density and the air volume, and according to the relation between the opening degree of the adjusting valve and the volume flow and the relation between the heat exchange quantity of the cooling device and the water flow.
5. The temperature control method according to claim 1, wherein the confirming the power range of the heating device according to the adjustment accuracy of the controller output port corresponding to the heating device and the relationship between the output power of the heating device and the opening degree comprises:
calculating the maximum heat exchange quantity of the current heating device according to the opening of the current heating device and the adjusting precision of the controller output port corresponding to the current heating device and the relation between the output power and the opening of the current heating device;
and determining a power range meeting the model selection rule of the current heating device according to the maximum heat exchange quantity of the current heating device.
6. The temperature control method of claim 5, wherein the heating device comprises a primary heating device and a secondary heating device; the precision of the current heating device for adjusting the output temperature comprises the precision of the first-stage heating device for adjusting the second temperature and the precision of the second-stage heating device for adjusting the third temperature;
the type selection rule of the primary heating device comprises the following steps: the maximum heat exchange quantity of the primary heating device is greater than or equal to a first heat exchange quantity, the first heat exchange quantity is determined according to the specific heat capacity of air, the air density, the air quantity and a second temperature difference, and the second temperature difference is obtained by subtracting the set value of the first temperature and the adjustment precision of the first temperature from the maximum value of the outlet temperature;
the type selection rule of the secondary heating device comprises the following steps: the maximum heat exchange quantity of the secondary heating device is larger than or equal to a second heat exchange quantity, and the second heat exchange quantity is determined according to the air specific heat capacity, the air density, the air volume and the adjusting precision of the second temperature.
7. The temperature control method according to claim 5, wherein the confirming of the adjustment accuracy of the heating device for the output temperature according to the adjustment accuracy of the controller output port corresponding to the heating device and the relation between the output power and the opening degree of the heating device comprises:
and confirming the adjustment accuracy of the current heating device on the output temperature according to the opening of the current heating device, the adjustment accuracy of the controller output port corresponding to the current heating device, the air specific heat capacity, the air density and the air volume and the relation between the output power and the opening of the current heating device.
8. The temperature control method according to claim 1, wherein said performing temperature control in accordance with the adjustment accuracy of the first temperature includes:
if the current value of the first temperature meets the regulation precision of the first temperature and the maintaining time is longer than the preset time, entering a second control stage; otherwise, not entering.
9. A temperature control apparatus, comprising:
the first control module is used for confirming the power range of the cooling device and the regulation precision of the regulating valve on a first temperature according to the regulation precision of a controller output port for controlling the opening of the regulating valve, the relation between the opening of the regulating valve and the volume flow and the relation between the heat exchange quantity of the cooling device and the water flow, and executing temperature control according to the regulation precision of the first temperature;
and the second control module is used for confirming the power range of the heating device and the adjustment accuracy of the heating device on the output temperature according to the adjustment accuracy of the controller output port corresponding to the heating device and the relation between the output power of the heating device and the opening degree, and executing temperature control according to the adjustment accuracy of the heating device on the output temperature.
10. An electronic device, comprising a memory and a processor, the memory storing a computer program that, when executed by the processor, causes the processor to perform the steps of the temperature control method according to any one of claims 1 to 8.
11. A computer-readable storage medium, characterized in that a computer program is stored which, when being executed by a processor, causes the processor to carry out the steps of the temperature control method according to any one of claims 1 to 8.
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