CN112976270B - Automatic constant temperature control system suitable for high-speed railway track slab water maintenance and application thereof - Google Patents
Automatic constant temperature control system suitable for high-speed railway track slab water maintenance and application thereof Download PDFInfo
- Publication number
- CN112976270B CN112976270B CN202110284068.7A CN202110284068A CN112976270B CN 112976270 B CN112976270 B CN 112976270B CN 202110284068 A CN202110284068 A CN 202110284068A CN 112976270 B CN112976270 B CN 112976270B
- Authority
- CN
- China
- Prior art keywords
- value
- temperature
- water
- control
- pid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/247—Controlling the humidity during curing, setting or hardening
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Feedback Control In General (AREA)
Abstract
The invention relates to a water-nutrient automatic constant temperature control system suitable for a high-speed railway track slab and application thereof. The system should be divided into two control modes: the remote control mode and the local control mode are adapted to different technological parameter requirements, and the maintenance effect is achieved.
Description
Technical Field
The invention relates to a water-supported automatic constant-temperature control system suitable for a high-speed railway track slab and application thereof, and belongs to the technical field of track slab processing and production.
Background
The water curing is also an essential important link in the manufacturing process of the track slab, and in winter construction, because the outside environment temperature is reduced, the water temperature of the water curing pool is difficult to ensure at 10 ℃, the final quality of the track slab is influenced, the constant temperature operation of heating the water curing pool must be carried out, and the quality of the track slab is ensured.
Disclosure of Invention
The invention aims to solve the technical problem of providing an automatic constant temperature control system suitable for the water-curing of a high-speed railway track slab and application thereof.
In order to solve the problems, the specific technical scheme of the invention is as follows: be suitable for high speed railway track board water to support automatic thermostatic control system, support the pond unit including a plurality of groups water, including the cell body in the pond unit is supported to every group water, install steam heating pipe in the cell body, the last steam stop valve that is equipped with of steam heating pipe, the cell body sets up an electric ball valve, steam stop valve is connected to the electric ball valve inlet end, steam heating pipe passes through temperature control system control temperature, support the rule according to water and set up temperature range, ensure that the temperature is invariable at a scope, time and temperature all can change, with the technological parameter requirement that adapts to the difference, reach the maintenance effect.
The temperature control system consists of an industrial personal computer and two sets of PLC systems, and the two sets of PLC systems respectively control the two water culture areas. The system should be divided into two control modes: a remote control mode and a local control mode. The remote control mode receives a starting signal from the central control and then automatically starts the operation, and automatically updates the state area data, the local database and the central control database; the local control mode is started by the electric control box of the station and updates the state area data, the local database and the central control database, the local control mode has automatic and manual control modes, the tablet personal computer pushes the water and nutrient data into the central control database, and water and nutrient data backup is reserved locally.
The track plate water culture automatic constant temperature control system monitors the temperature of the water culture pond through the temperature control system, and carries out intelligent control according to the temperature of the water pond to ensure the service temperature of the water culture pond; the controller automatically adjusts the heating valve to control the temperature of the pool according to the temperature curve set by the water temperature in the pool and the maintenance rule and the PID control mode. In order to facilitate the real-time monitoring and operation on site, the control system is provided with a touch liquid crystal display screen, the data can be adjusted and observed on site at any time, and meanwhile, the control system can be communicated with a central management system of the steam curing system to carry out remote data monitoring and program control, record, store and print out historical measurement data, and achieve the overall management of the steam curing system in the unit.
The special instruction for PID operation control executes PID operation action only in the scanning after the sampling time is reached; PID represents "proportional, integral and derivative", and the control process is as follows:
step one, S1: target value (SV), S2: current value (PV), 16-bit commands S3-S3 +19, 32-bit commands S3-S3 + 20: after all the parameters are set, starting to execute the PID instruction, and temporarily storing the result in the step D;
the content of D is a data register area for designating the uninterrupted hold function, and if the data register area with the uninterrupted hold function is designated, the data register of the uninterrupted hold function is initialized and cleared to 0 by adding the program head.
Step two, a PID calculation formula:
when the S3+4 control mode is selected to be K0, K1, K2 and K5.
The PID calculation is classified into 3 types of automatic, forward operation, and reverse operation, the forward operation and reverse operation are designated by the contents of S3+4, and the setting values related to the PID calculation are also set by the registers designated by S3 to S3+ 5.
The expression of PID:
wherein PV (t) S represents the differential value of PV (t) to represent the integral value of E (t), and when the motion direction selects the forward motion or the reverse motion, the value of E (t) is less than or equal to 0, then it is considered as 0.
| Direction of motion | PID calculation mode |
| Positive motion, automatic | E(t)＝SV(t)-PV(t) |
| Reverse motion | E(t)＝PV(t)-SV(t) |
S represents the differential action, and the action is defined as the action of subtracting the PV value of the previous time from the PV value of the present time and dividing the PV value by the sampling time; the other 1/S represents the integral action, and the action is defined as the value obtained by adding the deviation quantity multiplied by the sampling time to the integral value at the previous time; g (S) represents a controlled device.
S3+4 is a control block of K0-K2, K5: by monitoring the differential status of the measured value (PV), the command will reduce the output of the output value (MV) when the measured value (PV) varies by too much.
Wherein, MV: output value
KP: proportional gain
E (t): amount of deviation
PV: measured value
SV: target value
KD: differential gain
PV (t) S: differential value of PV (t) t
KI: integral gain
Et: integral value of E (t)
Step three: when the S3+4 control mode is selected to be K3 and K4, the temperature control expression will be
Wherein the deviation is fixed
E(t)＝SV(t)-PV(t)
1/K I And 1/K P Respectively represent division by K I And divided by K P Since the control block is a PID instruction dedicated to temperature control, it is used in conjunction with a GPWM instruction.
When the sampling Time (TS) is set to 4 seconds (K400), the output range of the output value (MV) is between K0 and K4000, and the cycle time set value of the accompanying GPWM instruction is set to 4 seconds (K4000).
When adjusting each parameter in the environment of controlling temperature, firstly selecting the automatic adjusting function of K3, after the internal adjustment of the instruction is finished, automatically setting the function selection to be K4, and then modifying to be a better parameter according to the control result.
Adjustment of K P 、K I And K D When three main parameters are adopted (S3+4 is K0-K2, K5), K is firstly adjusted P Value, and K I And K D The value is set to 0, when the value is adjusted to be controllable, K is adjusted from small to large in sequence I Value, from small to large and K D The value is obtained.
The invention has the following beneficial effects: the track slab water-curing automatic constant-temperature control system reduces the contact between the track slab and the external environment, creates a proper curing environment and reduces the loss of heat; the temperature control system allows the steam heating conduit to have sufficient thermal power.
Drawings
Fig. 1 is a schematic diagram of a track slab water-nutrient automatic constant-temperature control system.
FIG. 2 is a schematic diagram of the control blocks of K0-K2 and K5 for S3+ 4.
FIG. 3 is a schematic diagram of the control block where S3+4 is K3 and K4.
Detailed Description
As shown in fig. 1, be suitable for high-speed railway track board water to support automatic constant temperature control system, including a plurality of groups water support pond unit, including cell body 1 in every group water support pond unit, install steam heating pipe 2 in the cell body, be equipped with steam stop valve 3 on the steam heating pipe 2, cell body 1 sets up an electric ball valve 4, steam stop valve 3 is connected to electric ball valve 4 inlet end, steam heating pipe 2 passes through 5 control temperature of temperature control system, set up the temperature range according to the water support rule, ensure that the temperature is invariable in a scope, time and temperature all can change, with the technological parameter requirement of adaptation difference, reach the maintenance effect.
The temperature control system consists of an industrial personal computer and two sets of PLC systems, and the two sets of PLC systems respectively control the two water culture areas. The system is divided into two control modes: a remote control mode and a local control mode. The remote control mode receives a starting signal from the central control and then automatically starts the operation, and automatically updates the state area data, the local database and the central control database; the local control mode is started by the electric control box of the station and updates the state area data, the local database and the central control database, the local control mode has automatic and manual control modes, the tablet personal computer pushes the water and nutrient data into the central control database, and water and nutrient data backup is reserved locally.
The track plate water culture automatic constant temperature control system monitors the temperature of the water culture pond through the temperature control system, and carries out intelligent control according to the temperature of the water pond to ensure the service temperature of the water culture pond; the controller automatically adjusts the heating valve to control the temperature of the pool according to the temperature curve set by the water temperature in the pool and the maintenance rule and the PID control mode. In order to facilitate the real-time monitoring and operation on site, the control system is provided with a touch liquid crystal display screen, the data can be adjusted and observed on site at any time, and meanwhile, the control system can be communicated with a central management system of the steam curing system to carry out remote data monitoring and program control, record, store and print out historical measurement data, and achieve the overall management of the steam curing system in the unit.
The PID operation is executed only in the scanning after the sampling time is reached by a special instruction for PID operation control; PID represents "proportional, integral and derivative", and the control process is as follows:
step one, S1: target value (SV), S2: current value (PV), 16-bit commands S3-S3 +19, 32-bit commands S3-S3 + 20: after all the parameters are set, starting to execute the PID instruction, and temporarily storing the result in the step D;
the content of D is a data register area for designating the uninterruptible holding function, and if the data register area with the blackout holding function is to be designated, the data register of the blackout holding area is added at the beginning of the program and is initialized and cleared to 0.
Step two, a PID calculation formula:
when the S3+4 control mode is selected to be K0, K1, K2 and K5.
The PID calculation is classified into 3 types of automatic, forward operation, and reverse operation, the forward operation and reverse operation are designated by the contents of S3+4, and the setting values related to the PID calculation are also set by the registers designated by S3 to S3+ 5.
The expression of PID:
wherein PV (t) S represents the differential value of PV (t) to represent the integral value of E (t), and when the motion direction selects the forward motion or the reverse motion, the value of E (t) is less than or equal to 0, then it is considered as 0.
| Direction of motion | PID calculation mode |
| Positive motion, automatic | E(t)＝SV(t)-PV(t) |
| Reverse motion | E(t)＝PV(t)-SV(t) |
As shown in FIG. 2, S represents the differentiating action, which is defined as the action of subtracting the previous PV value from the present PV value and dividing by the sampling time; the other 1/S represents the integral action, and the action is defined as the value obtained by adding the deviation quantity multiplied by the sampling time to the integral value at the previous time; g(s) denotes a controlled apparatus.
S3+4 is a control block of K0-K2, K5: by monitoring the differential status of the measured value (PV), the command will reduce the output of the output value (MV) if the measured value (PV) varies by too much.
Wherein, MV: output value
KP: proportional gain
E (t): amount of deviation
PV: measured value
SV: target value
KD: differential gain
PV (t) S: differential value of PV (t) t
KI: integral gain
Et: integral value of E (t)
Step three: when the S3+4 control mode is selected as K3 and K4, the formula for the temperature control dedicated function is introduced:
the expression will be changed into
Wherein the deviation is fixed
E(t)＝SV(t)-PV(t)
The control block diagram shown in fig. 3: the symbols 1/KI and 1/KP represent the function of dividing KI and KP respectively, since the control block is a PID instruction dedicated to temperature control and needs to be used together with GPWM instruction.
When the sampling Time (TS) is set to 4 seconds (K400), the output range of the output value (MV) is between K0 and K4000, and the cycle time set value of the accompanying GPWM instruction is also set to 4 seconds (K4000).
When adjusting each parameter in the environment of controlling temperature, firstly selecting the automatic adjusting function of K3, after the internal adjustment of the instruction is finished, automatically setting the function selection to be K4, and then modifying to be a better parameter according to the control result.
When adjusting three main parameters of KP, KI and KD (S3+4 is K0-K2 and K5), firstly adjusting KP value, and KI and KD value are firstly set as 0, and when adjusting to be controllable, adjusting KI value from small to large, and then adjusting KI value from small to large and KD value in turn.
What has been described above is merely a preferred embodiment of the invention. It should be noted that variations and modifications can be made by those skilled in the art without departing from the principle of the present invention, and they should also be considered as falling within the scope of the present invention.
Claims (2)
1. The application of the track plate water-culture automatic constant-temperature control system comprises a plurality of groups of water-culture pond units, wherein each group of water-culture pond units comprises a pond body, a steam heating pipe is arranged in the pond body, a steam stop valve is arranged on the steam heating pipe, the pond body is provided with an electric ball valve, the air inlet end of the electric ball valve is connected with the steam stop valve, and the steam heating pipe controls the temperature through a temperature control system; the temperature control system comprises an industrial personal computer and two sets of PLC systems, and the two sets of PLC systems control two water culture areas respectively, its characterized in that: the temperature control system monitors the temperature of the water culture pond, the temperature controller sets a temperature curve according to the temperature of water in the water culture pond, the temperature of the water pond is controlled by automatically adjusting the heating valve according to a PID control mode, the PID control mode executes PID operation action only in the scanning after the sampling time is up, and the control process is as follows:
step one, S1: target value (SV), S2: current value (PV), 16-bit instructions S3-S3 +19, 32-bit instructions S3-S3 + 20: after all the parameters are set, starting to execute the PID instruction, and temporarily storing the result in the step D;
d, specifying a data register area with a power failure maintaining function, and adding a program head to initialize and clear the data register of the power failure maintaining area to 0 if the data register area with the power failure maintaining function is specified;
step two, a PID calculation formula:
when the S3+4 control mode is selected to be K0, K1, K2 and K5;
the PID calculation is divided into 3 types of automatic, forward operation and reverse operation, the forward operation and reverse operation are designated by the content of S3+4, and the setting values related to the PID calculation are also set by the registers designated by S3-S3 + 5;
the expression of PID:
wherein PV (t) S represents the differential value of PV (t) to represent the integral value of E (t), and when the motion direction selects the forward motion or the reverse motion, the value of E (t) is less than or equal to 0, then the value is regarded as 0;
S represents the differential action, which is defined as the action of subtracting the previous PV value from the present PV value and dividing by the sampling time; the other 1/S represents the integral action, and the action is defined as the value obtained by adding the deviation quantity multiplied by the sampling time to the integral value at the previous time; g(s) denotes a controlled apparatus;
s3+4 is a control block of K0-K2, K5: monitoring the differential status of the measured value (PV), when the measured value (PV) has too large variation, the instruction will reduce the output of the output value (MV);
wherein, MV: output value
KP: proportional gain
E (t): amount of deviation
PV: measured value
SV: target value
KD: differential gain
PV (t) S: differential value of PV (t) t
KI: integral gain
Et: integral value of E (t)
Step three: when the S3+4 control mode is selected as K3 and K4, the formula for the temperature control dedicated function is introduced:
the expression will be changed into
Wherein the deviation is fixed
E(t)＝SV(t)-PV(t)
1/KI represents the function divided by KI, the notation of 1/KP represents the function divided by KP;
when the sampling Time (TS) is set to be 4 seconds (K400), the output range of the output value (MV) is between K0 and K4000, and the cycle time set value of the matched GPWM instruction is set to be 4 seconds (K4000);
when adjusting various parameters in the environment of controlling temperature, firstly selecting the automatic K3 adjusting function, automatically setting the function selection to be K4 after finishing the internal adjustment of the instruction, and then modifying the function selection to be better parameters according to the control result;
when adjusting three main parameters of KP, KI and KD (S3+4 is K0-K2 and K5), firstly adjusting KP value, and KI and KD value are firstly set as 0, and when adjusting to be controllable, adjusting KI value from small to large, and then adjusting KI value from small to large and KD value in turn.
2. The use of the track slab water-nutrient automatic thermostatic control system of claim 1, characterized in that: the temperature control system comprises a remote control mode and a local control mode, wherein the remote control mode receives a starting signal from the central control and then automatically starts to operate, and automatically updates own state area data, a local database and a central control database; the local control mode is started by the electric control box of the station and updates the state area data, the local database and the central control database, the local control mode has automatic and manual control modes, the tablet personal computer pushes the water and nutrient data into the central control database, and water and nutrient data backup is reserved locally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110284068.7A CN112976270B (en) | 2021-03-17 | 2021-03-17 | Automatic constant temperature control system suitable for high-speed railway track slab water maintenance and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110284068.7A CN112976270B (en) | 2021-03-17 | 2021-03-17 | Automatic constant temperature control system suitable for high-speed railway track slab water maintenance and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112976270A CN112976270A (en) | 2021-06-18 |
| CN112976270B true CN112976270B (en) | 2022-08-30 |
Family
ID=76333022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110284068.7A Active CN112976270B (en) | 2021-03-17 | 2021-03-17 | Automatic constant temperature control system suitable for high-speed railway track slab water maintenance and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112976270B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776157A (en) * | 2012-10-18 | 2014-05-07 | 葛洲坝集团第五工程有限公司 | Steam and electric heating tube combined heating device |
| CN203705920U (en) * | 2014-01-14 | 2014-07-09 | 中铁二十四局集团有限公司 | Concrete precast beam spray maintenance remote monitoring system |
| WO2014160168A1 (en) * | 2013-03-14 | 2014-10-02 | Solidia Technologies, Inc. | Curing systems for materials that consume carbon dioxide |
| CN108818907A (en) * | 2018-07-21 | 2018-11-16 | 厦门三航混凝土有限公司 | Section of jurisdiction conserves intelligent temperature control system and section of jurisdiction maintenance process |
| CN208179893U (en) * | 2018-01-18 | 2018-12-04 | 上海兆捷实业发展有限公司 | A kind of concrete curing pond |
| CN110614713A (en) * | 2019-10-31 | 2019-12-27 | 北京好运达智创科技有限公司 | Track slab maintenance system and method |
-
2021
- 2021-03-17 CN CN202110284068.7A patent/CN112976270B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776157A (en) * | 2012-10-18 | 2014-05-07 | 葛洲坝集团第五工程有限公司 | Steam and electric heating tube combined heating device |
| WO2014160168A1 (en) * | 2013-03-14 | 2014-10-02 | Solidia Technologies, Inc. | Curing systems for materials that consume carbon dioxide |
| CN203705920U (en) * | 2014-01-14 | 2014-07-09 | 中铁二十四局集团有限公司 | Concrete precast beam spray maintenance remote monitoring system |
| CN208179893U (en) * | 2018-01-18 | 2018-12-04 | 上海兆捷实业发展有限公司 | A kind of concrete curing pond |
| CN108818907A (en) * | 2018-07-21 | 2018-11-16 | 厦门三航混凝土有限公司 | Section of jurisdiction conserves intelligent temperature control system and section of jurisdiction maintenance process |
| CN110614713A (en) * | 2019-10-31 | 2019-12-27 | 北京好运达智创科技有限公司 | Track slab maintenance system and method |
Non-Patent Citations (1)
| Title |
|---|
| 双块式无砟轨道生产线蒸汽养护系统设计;李敏霞;《双块式无砟轨道生产线蒸汽养护系统设计》;20200410;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112976270A (en) | 2021-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107632524B (en) | Communication machine room temperature model prediction control method and system | |
| CN109798646B (en) | Variable air volume air conditioner control system and method based on big data platform | |
| CN104315683B (en) | Fuzzy PID (proportion integration differentiation) -based water-cooled air conditioner regulation and control method | |
| CN103464474A (en) | Automatic temperature control method for rod material cold control system | |
| CN104317281A (en) | Energy-saving and water-saving device for distributed control over industrial circulating water and control method thereof | |
| CN113108432A (en) | Air conditioning system adjusting method and system based on weather forecast | |
| CN202399385U (en) | Steam curing automatic temperature control system | |
| CN103576711A (en) | Chemical reactor temperature control method based on quantification single-parameter PID control | |
| CN114484556B (en) | Water supply temperature regulation and control method based on target energy consumption management and control | |
| CN112976270B (en) | Automatic constant temperature control system suitable for high-speed railway track slab water maintenance and application thereof | |
| CN203028084U (en) | Tobacco re-drying system | |
| CN201539879U (en) | Fuzzy-PID combined control rotary type air preheater rotor variable speed operation system | |
| CN103294081B (en) | Intelligent PID control system and control method for temperature of shaft roller of multi-wire cutting machine | |
| CN109695943B (en) | Temperature and humidity control system of coating air conditioner based on big data deep learning | |
| CN112539450B (en) | Multi-strategy intelligent heat supply method based on temperature and time offset control | |
| KR101808297B1 (en) | Smart mushroom cultivation control system and mushroom cultivation control method | |
| CN113110651B (en) | Temperature and humidity cascade control method based on AHU air return unit | |
| CN112286131B (en) | MAU control system and high-precision control method for MAU of electronic clean workshop | |
| CN111780155A (en) | Control system and control method for high-efficiency combustion hot blast stove | |
| CN209857324U (en) | Constant temperature and humidity control system for polysilicon electronic production | |
| CN203705995U (en) | Temperature control apparatus | |
| CN103729001A (en) | Temperature control device | |
| CN204178226U (en) | Industrial circulating water distribute control energy-saving water-saving device | |
| CN116538561B (en) | Two-network hydraulic balance regulation and control system and method based on Internet of things | |
| CN112413639B (en) | Intelligent control method and system for combustion-supporting air volume of heating furnace group |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |