CN115079745A - Rapid high-precision temperature control device and processing method thereof - Google Patents
Rapid high-precision temperature control device and processing method thereof Download PDFInfo
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- CN115079745A CN115079745A CN202210676436.7A CN202210676436A CN115079745A CN 115079745 A CN115079745 A CN 115079745A CN 202210676436 A CN202210676436 A CN 202210676436A CN 115079745 A CN115079745 A CN 115079745A
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- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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- 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 a rapid high-precision temperature control device, wherein the temperature control device comprises: the control unit is used for controlling and adjusting the temperature of the medium in the temperature control device; and the medium circulating unit is connected with the control unit and is used for performing circulating flow treatment on the medium subjected to temperature control treatment in the temperature control device so as to meet the requirement of constant temperature in production. The invention also relates to a corresponding processing method. Compared with the prior art, the rapid high-precision temperature control device and the processing method thereof can meet the individual temperature control requirements of users, and meanwhile, the device is more suitable for a system with higher overshoot requirement, has higher response speed and smaller overshoot, can be rapidly stabilized at a target temperature, and enables the temperature control performance to be more excellent.
Description
Technical Field
The invention relates to the technical field of temperature control, in particular to the technical field of temperature control devices, and specifically relates to a rapid high-precision temperature control device and a processing method thereof.
Background
The temperature control devices in the prior art are generally 1 device equipped with 1 group of heating units. The capacity of the heating unit is determined according to the calculation load when the equipment is designed, and if the temperature rise speed needs to be ensured, the capacity of the heating unit is selected according to the maximum calculation value, so that the defect that the temperature can be stabilized only by repeatedly oscillating up and down a set value in the temperature control process is overcome, and even after the temperature is stabilized, the temperature control precision is influenced; if the temperature control precision is required to be ensured, multiple oscillations are not generated, the capacity of the heating unit is selected according to the calculated minimum value, so that the heating speed is slow, and the heating speed is delayed if the load change is large.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a rapid high-precision temperature control device and a processing method thereof, wherein the rapid high-precision temperature control device not only can ensure the temperature rise speed, but also can ensure the temperature control precision.
In order to achieve the purpose, the rapid high-precision temperature control device and the processing method thereof are as follows:
the rapid high-precision temperature control device is mainly characterized in that the temperature control device comprises:
the control unit is used for controlling and adjusting the temperature of the medium in the temperature control device; and
and the medium circulating unit is connected with the control unit and is used for performing circulating flow treatment on the medium subjected to temperature control treatment in the temperature control device so as to meet the requirement of constant temperature in production.
Preferably, the control unit includes:
at least two groups of heating units for heating the medium
The display element is used for setting a target temperature to be convenient for a user to view;
the temperature sensor is used for acquiring the temperature of the media in real time;
the controller is connected with the temperature sensor and is used for receiving the temperature signal sent by the temperature sensor and carrying out PID operation processing on the temperature signal; and
and the solid-state relay is connected with the controller and used for receiving the control signal output by the controller and controlling the working state of the heating unit according to the control signal so as to adjust the temperature of the medium.
Preferably, the media circulation unit comprises:
the fan or the media pump is connected with the heating unit and is used for conveying the media subjected to temperature control regulation in the temperature control device; and
and the circulating pipeline is circularly arranged in the whole temperature control device, and the temperature sensor, the heating unit, the fan or the medium pump and the heat load unit are all arranged on the circulating pipeline.
Preferably, after the temperature control device enters the initial temperature-raising stage, each heating unit in the control device starts to work at the same time, and the temperature control device is subjected to rapid heating treatment, so that the temperature control device approaches the target temperature in the shortest time.
Preferably, after the medium reaches the required target temperature, the heating unit controls the output power of the heating unit according to different switching control periods of the PIDs in a packet-peak staggering manner, so that the temperature of the medium quickly reaches the target temperature and is stabilized.
Preferably, when the load demand of the medium changes suddenly during the operation of the temperature control device, the user can meet the current load demand in the shortest time by reasonably setting the number of the heating units.
Preferably, the media specifically includes: gas and/or liquid.
The method for realizing rapid high-precision temperature control treatment by using the device is mainly characterized by comprising the following steps of:
(1) the control device enters an initial heating-up stage, all the heating units start to work simultaneously, rapid heating-up treatment is carried out, and the heating temperature is close to the preset heating temperature of the control device in the shortest time;
(2) adjusting the medium in the control device to a target temperature and keeping the medium stable;
(3) judging whether the load requirement of the current control device is suddenly changed in the heating process, if so, increasing the number of the heating units so as to maintain temperature control balance in the shortest time; otherwise, the temperature control treatment in the current state is continuously kept.
Preferably, the step (2) is specifically:
when the media reaches the deviation range of the preset heating temperature, the control device performs grouping regulation and control processing on each heating unit through switching control output, so that the temperature of the media quickly reaches the target temperature and is kept stable.
Compared with the prior art, the rapid high-precision temperature control device and the processing method thereof have the advantages that at least 2 groups or more of heating units are arranged, and a plurality of groups of PID (proportion integration differentiation) adjustment are adopted, so that the individual temperature control requirements of users can be met, meanwhile, the device is more suitable for a system with higher overshoot requirements, has higher response speed and smaller overshoot, can be rapidly stabilized at a target temperature, and enables the temperature control performance to be more excellent.
Drawings
FIG. 1 is a schematic flow chart of the rapid high-precision temperature control device of the present invention.
FIG. 2 is a schematic diagram showing the temperature rise curve comparison between the rapid high-precision temperature control device of the present invention and a conventional single set of heating tubes.
Detailed Description
In order to more clearly describe the technical contents of the present invention, the following further description is given in conjunction with specific embodiments.
Before describing in detail embodiments that are in accordance with the present invention, it should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, the fast and high-precision temperature control device includes:
the control unit is used for controlling and adjusting the temperature of the medium in the temperature control device; and
and the medium circulating unit is connected with the control unit and is used for performing circulating flow treatment on the medium subjected to temperature control treatment in the temperature control device so as to meet the requirement of constant temperature in production.
As a preferred embodiment of the present invention, the control unit includes:
at least two groups of heating units for heating the medium;
the display element is used for setting a target temperature to be convenient for a user to view;
the temperature sensor is used for acquiring the temperature of the media in real time;
the controller is connected with the temperature sensor and is used for receiving the temperature signal sent by the temperature sensor and carrying out PID operation processing on the temperature signal; and
and the solid-state relay is connected with the controller and used for receiving the control signal output by the controller and controlling the working state of the heating unit according to the control signal so as to adjust the temperature of the medium.
In practical applications, the PID operation process specifically includes:
PID is as follows: abbreviations for proportionality, Integral, Differential. In the control process, a PID controller (also called PID regulator) which controls according to the proportion (P), integral (I) and derivative (D) of the deviation is an automatic controller which is most widely applied. The method has the advantages of simple principle, easy realization, wide application range, mutually independent control parameters, simpler parameter selection and the like; it can also be shown in theory that a PID controller is an optimal control for the typical objects of process control-the "first order lag + pure lag" and the "second order lag + pure lag" objects of control. The PID regulation law is an effective method for correcting the dynamic quality of a continuous system, the parameter setting mode is simple and convenient, and the structure is flexibly changed (PI, PD and …).
As a preferred embodiment of the present invention, the media circulation unit includes:
the fan or the media pump is connected with the heating unit and is used for conveying the media subjected to temperature control regulation in the temperature control device; and
and the circulating pipeline is circularly arranged in the whole temperature control device, and the temperature sensor, the heating unit, the fan or the medium pump and the heat load unit are all arranged on the circulating pipeline.
As a preferred embodiment of the present invention, after the temperature control device enters the initial temperature-raising stage, each heating unit in the control device starts to work at the same time, and performs a rapid heating process to make the temperature control device approach the target temperature in the shortest time.
As a preferred embodiment of the present invention, after the medium reaches the required target temperature, the heating unit controls the output power of the heating unit according to different switching control periods of the PIDs in a packet-staggered manner, so that the temperature of the medium quickly reaches the target temperature and stabilizes.
As a preferred embodiment of the invention, when the load requirement of the medium in the operation process of the temperature control device changes suddenly, a user can meet the current load requirement in the shortest time by reasonably setting the number of the heating units.
As a preferred embodiment of the present invention, the media specifically includes: gas and/or liquid.
The method for realizing rapid high-precision temperature control treatment by using the device comprises the following steps:
(1) the control device enters an initial heating-up stage, all the heating units start to work simultaneously, rapid heating-up treatment is carried out, and the heating temperature is close to the preset heating temperature of the control device in the shortest time;
(2) adjusting the medium in the control device to a target temperature and keeping the medium stable;
(3) judging whether the load requirement of the current control device is suddenly changed in the heating process, if so, increasing the number of the heating units so as to maintain temperature control balance in the shortest time; otherwise, the temperature control treatment in the current state is continuously kept.
As a preferred embodiment of the present invention, the step (2) specifically comprises:
when the media reaches the deviation range of the preset heating temperature, the control device performs grouping regulation and control processing on each heating unit through switching control output, so that the temperature of the media quickly reaches the target temperature and is kept stable.
The temperature control device of the technical scheme mainly comprises: the control unit and the media circulation unit. Wherein: the control unit consists of a controller, a display element, a temperature sensor, a driving unit (such as a solid-state relay), a heating unit and the like; the medium circulating unit consists of a fan or a medium pump, a pipeline, a heat load unit and the like.
1. A control unit: the method comprises the steps of setting a target temperature SV on a display element, collecting a real-time temperature PV of a medium through a temperature sensor TE, transmitting the real-time temperature PV to a controller CU, outputting a control signal to a solid state relay SSR to control the on and off of a heating unit through PID operation of the controller, and achieving the function of adjusting the temperature of the medium.
2. A media circulation unit: the medium heated by the heating unit circularly flows in the pipeline through the delivery of the medium pump or the fan, and the requirement of constant temperature in production is met.
The control device of the technical scheme is provided with 2 groups or more of heating units, and the total heating power is divided into each independent heating unit. In actual operation, all heating units are initially heated to run at full load, and after the medium reaches the target temperature PV deviation range (the value can be changed according to actual conditions), the heating units control the output power of the heating units in a staggered mode according to different control periods of each PID, and the target temperature is reached under the condition that the overshoot is almost not generated.
Taking the target temperature SV of 140 ℃ as an example, a temperature rise curve pair of a conventional single group of heating pipes and the apparatus is shown in fig. 2, wherein in the temperature control apparatus of the present technical scheme, at the first stage T1, all heating units operate simultaneously and approach the target temperature quickly; after entering the set deviation temperature range, the controller enters a second stage T2, and controls the power output of each heating unit at intervals through calculation, so as to quickly stabilize at the target temperature.
After the technical scheme enters the control mode, the change state is as follows:
1. in the initial heating-up stage, all heating units of the temperature control device work simultaneously, quickly heat up and approach to the set temperature in a short time;
2. after the temperature of the medium reaches the deviation range of the set temperature, the temperature of the medium (gas or liquid) quickly reaches the set value and is stabilized by switching control output and regulating and controlling each heating unit in groups.
3. If the load requirement changes suddenly during operation, the load requirement can be met in a short time by reasonably putting the heating unit into the operation.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by suitable instruction execution devices.
In the description herein, references to the description of terms "an embodiment," "some embodiments," "an example," "a specific example," or "an embodiment," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Compared with the prior art, the rapid high-precision temperature control device provided by the invention can meet the individual temperature control requirements of users by arranging at least 2 or more groups of heating units and adjusting through a plurality of groups of PID, is more suitable for a system with higher overshoot requirement, has higher response speed and smaller overshoot, can be rapidly stabilized at the target temperature, and has more excellent temperature control performance.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (9)
1. A fast and high-precision temperature control device is characterized in that the temperature control device comprises:
the control unit is used for controlling and adjusting the temperature of the medium in the temperature control device; and
and the medium circulating unit is connected with the control unit and is used for performing circulating flow treatment on the medium subjected to temperature control treatment in the temperature control device so as to meet the requirement of constant temperature in production.
2. The fast and high-precision temperature control device according to claim 1, wherein the control unit comprises:
at least two groups of heating units for heating the medium;
the display element is used for setting a target temperature to be convenient for a user to view;
the temperature sensor is used for acquiring the temperature of the media in real time;
the controller is connected with the temperature sensor and is used for receiving the temperature signal sent by the temperature sensor and carrying out PID operation processing on the temperature signal; and
and the solid-state relay is connected with the controller and used for receiving the control signal output by the controller and controlling the working state of the heating unit according to the control signal so as to adjust the temperature of the medium.
3. The apparatus according to claim 2, wherein said medium circulating unit comprises:
the fan or the media pump is connected with the heating unit and is used for conveying the media subjected to temperature control regulation in the temperature control device; and
and the circulating pipeline is circularly arranged in the whole temperature control device, and the temperature sensor, the heating unit, the fan or the medium pump and the heat load unit are all arranged on the circulating pipeline.
4. The apparatus according to any one of claims 2 to 3, wherein after the temperature control apparatus enters the initial temperature-raising stage, each heating unit in the control apparatus starts to operate at the same time, and performs a rapid temperature-raising process to make the temperature control apparatus approach the target temperature in the shortest time.
5. The apparatus according to any one of claims 2 to 3, wherein when the medium reaches a desired target temperature, the heating unit controls the output power of the heating unit according to different switching control periods of the PIDs by packet peak shifting, so that the temperature of the medium quickly reaches the target temperature and stabilizes.
6. The apparatus according to any one of claims 2 to 3, wherein when the load demand of said medium changes suddenly during the operation of said apparatus, the user can satisfy the current load demand in a shortest time by properly setting the number of said heating units.
7. A fast and high-precision temperature control device according to any one of claims 1 to 3, wherein said medium comprises: gas and/or liquid.
8. A method for realizing rapid and high-precision temperature control treatment by using the device of any one of claims 1 to 3, wherein the method comprises the following steps:
(1) the control device enters an initial heating-up stage, all the heating units start to work simultaneously, rapid heating-up treatment is carried out, and the heating temperature is close to the preset heating temperature of the control device in the shortest time;
(2) adjusting the medium in the control device to a target temperature and keeping the medium stable;
(3) judging whether the load requirement of the current control device is suddenly changed in the heating process, if so, increasing the number of the heating units so as to maintain temperature control balance in the shortest time; otherwise, the temperature control treatment in the current state is continuously kept.
9. The method for realizing rapid and high-precision temperature control treatment according to claim 8, wherein the step (2) is specifically as follows:
when the media reaches the deviation range of the preset heating temperature, the control device performs grouping regulation and control processing on each heating unit through switching control output, so that the temperature of the media quickly reaches the target temperature and is kept stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210676436.7A CN115079745A (en) | 2022-06-15 | 2022-06-15 | Rapid high-precision temperature control device and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210676436.7A CN115079745A (en) | 2022-06-15 | 2022-06-15 | Rapid high-precision temperature control device and processing method thereof |
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| CN115079745A true CN115079745A (en) | 2022-09-20 |
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