CN110296407A - A kind of Different Boiler Burner Control System - Google Patents
A kind of Different Boiler Burner Control System Download PDFInfo
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- CN110296407A CN110296407A CN201910387131.2A CN201910387131A CN110296407A CN 110296407 A CN110296407 A CN 110296407A CN 201910387131 A CN201910387131 A CN 201910387131A CN 110296407 A CN110296407 A CN 110296407A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
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Abstract
The invention discloses a kind of Different Boiler Burner Control Systems, belong to Boiler Control field, it solves the problems, such as boiler implosion mode and adjusts efficiency, its key points of the technical solution are that including bottom layer driving, operating system, and application control, it is characterized in that, the bottom layer driving includes fan speed regulation driving, IO control driving, temperature acquisition driving, serial port drive, the acquisition driving of exterior I O data, lambda sensor acquisition driving, storage drive, and PWM heat driven, the operating system includes kernel, inter-thread communication, Object Management group, real-time scheduler, thread management and device drives, the application control includes main program scheduling and serial port terminal command analysis task, master control temperature adjusts task, aids in temperature control adjusts task, and system failure abnormal task, reach convenient for regulating and controlling and modifying the method for operation Effect.
Description
Technical field
The present invention relates to boiler operatiopn control fields, particularly, are related to a kind of Different Boiler Burner Control System.
Background technique
With the continuous improvement of China's industrialized level, the application of gas fired-boiler becomes more extensively.Conventional gas boiler
Control system there is the defects of stability is poor, safety is low and efficiency of combustion is not high, it is impossible to meet Practical Projects
Demand, improving gas fired-boiler automatic controlling level and efficiency of combustion becomes the direction of boiler system future development.More than being based on
Background needs to carry out existing Different Boiler Burner Control System certain improvement.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.In view of this, this hair
Improving eyesight is proposition Different Boiler Burner Control System, has the advantage for efficiently, comprehensively, reliably controlling boiler operatiopn.
In order to solve the above-mentioned technical problem, the technical scheme is that a kind of Different Boiler Burner Control System, including bottom
Layer driving, operating system and application control, characterized in that the bottom layer driving includes fan speed regulation driving, IO control drive
Dynamic, temperature acquisition driving, serial port drive, exterior I O data acquisition driving, lambda sensor acquisition drive, storage drive and
PWM heat driven, the operating system include kernel, inter-thread communication, Object Management group, real-time scheduler, thread management and set
Standby driving, the application control includes main program scheduling and serial port terminal command analysis task, master control temperature adjust task, auxiliary
Temperature control is helped to adjust task and system failure abnormal task.
Further, the serial port terminal command analysis task includes the following steps:
A1, system initialization；
Does A2 wait serial ports to receive message? if so, into A3, if not, timing, which is monitored, returns to A2,
Whether A3, serial link layer data packet correct? if so, serial link layer parses, into A4, if not, return communication
Error code returns to A2；
Whether A4, application layer data packet correct? if so, application layer data Packet analyzing, system communication response, terminate, if not,
Return communication error code returns to A2.
Further, master control temperature adjusts task and includes the following steps:
B1, the initialization of master control temperature；
Does B2 judge that master control temperature is less than setting value? if it is, high-speed cruising 3 seconds, and enter B3, if not, closing master
Controlling temperature circuit simultaneously terminates；
Does B3 judge whether igniting overtime? if it is, into B4, if not, low speed is run, into B31；
Do B4, igniting restart number greater than three? if so, stopping alarm and terminating, if not, returning to B2；
B31 judge whether there is flame? if so, low-speed running, feed pump operation, are delayed 2 seconds, main air valve is opened, and starting pressure passes
Sensor, into B311, if not, returning to B3；
Does B311 judge that master control temperature is greater than setting upper limit value? if so, master control temperature loop is closed, if not, low-speed running,
Feed pump operation, is delayed 2 seconds, and main air valve is opened, and starts pressure sensor.
Further, the system failure abnormal task includes the following steps:
C1, system initialization；
Does C2 judge whether operation abnormal? if so, into C3, if not, into C21；
Does C3 judge whether master control temperature is adjusted abnormal? if so, stopping alarm, if not, into C31；
Does C31 judge whether aids in temperature control is adjusted abnormal? if so, stopping alarm, if not, into C311；
Does C311 judge whether lambda sensor abnormal? if so, stopping alarm, if not, returning to C2；
Does C21 judge whether equipment abnormal? if so, record fault code, stopping alarm, if not, terminating.
Further, the communication of the serial port drive includes the following steps:
D1, initialization of (a) serial ports open serial ports, and serial ports configuration creates communication thread；
Does D2 judge that serial ports writes event? if it is, writing serial data, notifies main thread, return to D2, if not,
Into D3；
Does D3 judge that serial ports has reading event? if it is, reading serial data, notifies main thread, return to D3, if not,
Into D4；
D4 closes thread, closes serial ports.
The technology of the present invention effect major embodiment is in the following areas: improving development efficiency, improves the stability of operation and reliable
Property, the development cycle is shortened, the occupancy to cpu resource is reduced.
Detailed description of the invention
Fig. 1 is system frame structure schematic diagram in embodiment；
Fig. 2 is serial port communication method flow chart in embodiment；
Fig. 3 is master control temperature control method flow chart in embodiment；
Fig. 4 is system failure misoperation method flow diagram in embodiment；
Fig. 5 is the multi-threading flow chart of serial communication in embodiment.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, so that technical solution of the present invention is more readily understood and slaps
It holds, and is not considered as limiting the invention.
In previous boiler implosion programming, only bottom layer driving and application layer, without operating system.Therefore system is whole
A control program frame, requires developer and is designed, and in the design, require a great deal of time is being program staff
It unites in performance test.For this system under embedded development real time operating system environment, exploitation real-time application makes setting for program
Meter and extension become easy, and new function can be increased by not needing big change, and enhance the stability of system, improve
Development efficiency, shortens the development cycle.Under embedded development real time operating system environment, the complicated application control of exploitation one
Entire broken down into program can be usually multiple tasks module, debugging, modification according to the decoupling principle in soft project by processing procedure sequence
Each task module has little influence on other modules.Gas-fired Boiler System software can be divided into three layers according to software configuration
It is secondary, respectively bottom layer driving layer, operating system layer and application control layer.Its gas-fired Boiler System software the general frame such as Fig. 1 institute
Show.
A kind of Different Boiler Burner Control System, including bottom layer driving, operating system and application control, characterized in that institute
Stating bottom layer driving includes fan speed regulation driving, IO control driving, temperature acquisition driving, serial port drive, the acquisition drive of exterior I O data
Dynamic, lambda sensor acquisition driving, storage drive and PWM heat driven, the operating system include that kernel, cross-thread are logical
Letter, Object Management group, real-time scheduler, thread management and device drives, the application control include main program scheduling and serial ports
Station command parses task, master control temperature adjusts task, aids in temperature control adjusts task and system failure abnormal task.
Application layer is integrally controlled gas-fired Boiler System, by the task schedule of main program, so that each task module
Between the work that can coordinate.Gas-fired Boiler System application layer according to function can five different tasks of graduation, be master control respectively
Temperature adjusts task, auxiliary control temperature adjusts task, broad domain oxygen sensor closed loop adjusts task, system failure abnormal task and serial ports
Station command parses task.
Operating system layer uses RT-Thread operating system, makes software interface unit-modularized by the system, transplants
Property it is high, improve development efficiency, reduce the development cycle.
Bottom layer driving layer and hardware are closely bound up, and can it smoothly execute, and are related to task layer and whether application layer is normal,
Therefore the quality of driver directly affects the performance of system.
With reference to Fig. 2, serial port terminal command analysis task includes the following steps:
A1, system initialization；
Does A2 wait serial ports to receive message? if so, into A3, if not, timing, which is monitored, returns to A2,
Whether A3, serial link layer data packet correct? if so, serial link layer parses, into A4, if not, return communication
Error code returns to A2；
Whether A4, application layer data packet correct? if so, application layer data Packet analyzing, system communication response, terminate, if not,
Return communication error code returns to A2.
Each object includes a dedicated buffer area during serial communication, is carrying out sending and receiving for data
The buffer area will be used in journey.Therefore in order to avoid communication disorder, it is desirable that thread synchronization executes.It is needed when handling multiple threads
Coordinate the operation of 13 communication of string.Point only runs a thread at the same time, and hangs up thread to be processed, with reduction pair
The occupancy of cpu resource.As long as processing terminate for the thread of present, the line being suspended is activated by sending activation signal
Journey handles thread feeding.Oneself is hung up to the execution for blocking oneself in order to realize thread when resource object is occupied
Process waits resource idle signal to stop obstruction and continues to execute, occupies to achieve the purpose that reduce to cpu resource.WIN32
The waiting function that can monitor multiple synchronization objects simultaneously is provided in API, api function prototype is
WaitForMUultipleObjects0.In monitoring system, processing serial communication task is the part of functions of CPU, because
This must improve the execution efficiency of application program using function is waited.It is to regard file device as to come pair that MFC, which is by serial communication,
To.
As shown in Fig. 2, can carry out end 121 after opening serial ports by the function that function prototype is SetCommState0 and match
It sets.The content of port configuration includes: data format setting, overtime setting, setting buffers etc..User after being arranged successfully
By calling ReadFile0 and WriteFileO function to carry out the read-write of data to serial ports.It is monitored the API letter of communication event
Number prototype is WaitCommEvent0；The api function prototype for closing serial ports is CloseHandleO.By ReadFileO and
WriteFileO function can take two ways, the respectively synchronous mode executed and overlapping I/0 when being written and read to serial ports
Mode.When by the way of synchronous executing, called function must can be just returned after execution.So that except
Outside the thread being performed, all threads will be suspended, and also just reduce efficiency in this way；And when being overlapped by the way of I/0, because
It for I/0 operation is executed on backstage, called function can be returned after needing not wait for execution.So that other lines
Journey withouts waiting for that the processing of other things can be carried out at once, so that it is enterprising in same serial ports handle to realize different threads
The operation that row is read while write, improves the real-time of communication.Thread serial port flow chart is as shown in Figure 2.
Include the following steps: as shown in figure 3, master control temperature adjusts task
B1, the initialization of master control temperature；
Does B2 judge that master control temperature is less than setting value? if it is, high-speed cruising 3 seconds, and enter B3, if not, closing master
Controlling temperature circuit simultaneously terminates；
Does B3 judge whether igniting overtime? if it is, into B4, if not, low speed is run, into B31；
Do B4, igniting restart number greater than three? if so, stopping alarm and terminating, if not, returning to B2；
B31 judge whether there is flame? if so, low-speed running, feed pump operation, are delayed 2 seconds, main air valve is opened, and starting pressure passes
Sensor, into B311, if not, returning to B3；
Does B311 judge that master control temperature is greater than setting upper limit value? if so, master control temperature loop is closed, if not, low-speed running,
Feed pump operation, is delayed 2 seconds, and main air valve is opened, and starts pressure sensor.
Master control temperature adjusts the main temperature for adjusting boiler hot-water, when master control temperature is greater than set temperature value, master control temperature
It spends regulating loop to close, temperature stops adjusting.As long as the adjusting of master control temperature is opened when master control temperature is less than set temperature lower limit value
It opens.After master control temperature adjusts unlatching, DC fan high-speed cruising is adjusted first, so that the exhaust gas inside furnace chamber is all removed, so
After restart ignition control, while being lighted a fire, lambda sensor start starting heating, blower can't be controlled by oxygen sensing
Device, therefore wind speed setting is low wind speed, when one side igniter fire, fire amount very little, it is easy to extinguish；On the other hand furnace is kept
There are enough oxygen surpluses in chamber.When igniter detects flame output, then ignition cycle is jumped out, igniter restarts number not
It can exceed that 3 times, otherwise stopping alarm.After lighting a fire successfully, feed back to whether igniting succeeds by thermocouple, it is contemplated that thermocouple
Temperature has certain hysteresis quality, lights a fire successfully after 3 seconds, just judges thermocouple, if thermocouple test point igneous function, is
System will open main air valve.Because there are two ignition switch in furnace chamber, small fire switch is controlled by igniter, is finally controlled and led by small fire
Air valve lights real furnace chamber main air valve work.At the same time, feed pump is opened, and wind speed is run by the empirical value of setting.
Only after the internal temperature of lambda sensor reaches 750 degree, blower is just controlled by lambda sensor, master control temperature regulation flow process figure
As shown in Figure 3.
With reference to Fig. 4, system failure abnormal task includes the following steps:
C1, system initialization；
Does C2 judge whether operation abnormal? if so, into C3, if not, into C21；
Does C3 judge whether master control temperature is adjusted abnormal? if so, stopping alarm, if not, into C31；
Does C31 judge whether aids in temperature control is adjusted abnormal? if so, stopping alarm, if not, into C311；
Does C311 judge whether lambda sensor abnormal? if so, stopping alarm, if not, returning to C2；
Does C21 judge whether equipment abnormal? if so, record fault code, stopping alarm, if not, terminating.
System during long-play or by outside environmental elements interference, it is possible to so that system occur it is various each
The problem of sample.Good system not only needs to reach on program circuit requirement, will also be to the issuable exception of system at
Reason, and these exception records are got off, facilitate user and engineering staff to safeguard.Requirement of this system for safety is compared
Height, therefore a system exception task need to be designed, guarantee the execution that system can be safe and reliable, reduces the accident rate of system, mention
The service life of high equipment.Its system exception task is as shown in Figure 4.
System exception task is divided into operation exception and unit exception according to disturbing factor difference.It is operating abnormally main packet
It is different to include master control temperature dysregulation, auxiliary control temperature dysregulation, broad domain oxygen sensor closed loop dysregulation and serial port terminal communication
Often etc..These are different normally due to generating under external interference, have uncertainty, once generating the exception, system will immediately
Stopping alarm, being operating abnormally certainly is not to be fully able to eliminate, and needs in equipment use continuous perfect, is reduced this different
Normal generation.Unit exception refers to system due to long-play, causes certain part of devices performance to decline and damage, i.e., hardware is different
Often.Unit exception needs carry out abnormality detection each hardware device, mainly include sensor abnormality, fan speed regulation exception, point
Fire control exception and CJl25 communication abnormality etc..For these exceptions, system will be recorded by the fault code set, and
Analyze the seriousness of the failure, the system determination exception is hard stop alarm or warning note user, while these exceptions
Record will be stored in journal file, and user and staff is facilitated to check and troubleshooting.
Refering to what is shown in Fig. 5, the communication of serial port drive includes the following steps:
D1, initialization of (a) serial ports open serial ports, and serial ports configuration creates communication thread；
Does D2 judge that serial ports writes event? if it is, writing serial data, notifies main thread, return to D2, if not,
Into D3；
Does D3 judge that serial ports has reading event? if it is, reading serial data, notifies main thread, return to D3, if not,
Into D4；
D4 closes thread, closes serial ports.
It is developed in VC++ programming usually using MFC program, can reduce program code in this way writes workload.
In MFC, application program threads are indicated by CWinThread Object table, which includes worker thread
(Worker.Thread) and two kinds of user-interface thread (GUI.Thread).For application program background task generally by work
Author's thread process；And user-interface thread is capable of providing user's interaction and interactive interface, is usually used in handling user's input
Data and the various events of response or message.Creation to CwinThread object, that is, start a thread, and application program can lead to
Cross calling function AfxBeginThreadO realization.Termination for thread can be realized: thread tune by following four mode
It is exited with ExitThreadO；Process belonging to thread is terminated；Thread function returns；With ready-made handle tune under abnormal conditions
It is exited with TerminateThread0.
Each object includes a dedicated buffer area during serial communication, is carrying out sending and receiving for data
The buffer area will be used in journey.Therefore in order to avoid communication disorder, it is desirable that thread synchronization executes.It is needed when handling multiple threads
Coordinate the operation of serial communication.Point only runs a thread at the same time, and hangs up thread to be processed, with reduction pair
The occupancy of cpu resource.As long as processing terminate for the thread of present, the line being suspended is activated by sending activation signal
Journey handles thread feeding.
Oneself is hung up to the implementation procedure for blocking oneself in order to realize thread when resource object is occupied, waits money
Source idle signal stops obstruction and continues to execute, and occupies to achieve the purpose that reduce to cpu resource.
Certainly, above is representative instance of the invention, and in addition to this, the present invention can also have other a variety of specific implementations
Mode, all technical solutions formed using equivalent substitution or equivalent transformation, is all fallen within the scope of protection of present invention.
Claims (5)
1. a kind of Different Boiler Burner Control System, including bottom layer driving, operating system and application control, characterized in that described
Bottom layer driving include fan speed regulation driving, IO control driving, temperature acquisition driving, serial port drive, exterior I O data acquire drive,
Lambda sensor acquisition driving, storage drive and PWM heat driven, the operating system include kernel, inter-thread communication,
Object Management group, real-time scheduler, thread management and device drives, the application control include main program scheduling and serial port terminal
Command analysis task, master control temperature adjust task, aids in temperature control adjusts task and system failure abnormal task.
2. Different Boiler Burner Control System as described in claim 1, characterized in that the serial port terminal command analysis task packet
Include following steps:
A1, system initialization；
Does A2 wait serial ports to receive message? if so, into A3, if not, timing, which is monitored, returns to A2,
Whether A3, serial link layer data packet correct? if so, serial link layer parses, into A4, if not, return communication
Error code returns to A2；
Whether A4, application layer data packet correct? if so, application layer data Packet analyzing, system communication response, terminate, if not,
Return communication error code returns to A2.
3. Different Boiler Burner Control System as described in claim 1, characterized in that it includes following step that master control temperature, which adjusts task,
It is rapid:
B1, the initialization of master control temperature；
Does B2 judge that master control temperature is less than setting value? if it is, high-speed cruising 3 seconds, and enter B3, if not, closing master
Controlling temperature circuit simultaneously terminates；
Does B3 judge whether igniting overtime? if it is, into B4, if not, low speed is run, into B31；
Do B4, igniting restart number greater than three? if so, stopping alarm and terminating, if not, returning to B2；
B31 judge whether there is flame? if so, low-speed running, feed pump operation, are delayed 2 seconds, main air valve is opened, and starting pressure passes
Sensor, into B311, if not, returning to B3；
Does B311 judge that master control temperature is greater than setting upper limit value? if so, master control temperature loop is closed, if not, low-speed running,
Feed pump operation, is delayed 2 seconds, and main air valve is opened, and starts pressure sensor.
4. Different Boiler Burner Control System as described in claim 1, characterized in that the system failure abnormal task includes such as
Lower step:
C1, system initialization；
Does C2 judge whether operation abnormal? if so, into C3, if not, into C21；
Does C3 judge whether master control temperature is adjusted abnormal? if so, stopping alarm, if not, into C31；
Does C31 judge whether aids in temperature control is adjusted abnormal? if so, stopping alarm, if not, into C311；
Does C311 judge whether lambda sensor abnormal? if so, stopping alarm, if not, returning to C2；
Does C21 judge whether equipment abnormal? if so, record fault code, stopping alarm, if not, terminating.
5. Different Boiler Burner Control System as described in claim 1, characterized in that the communication of the serial port drive includes as follows
Step:
D1, initialization of (a) serial ports open serial ports, and serial ports configuration creates communication thread；
Does D2 judge that serial ports writes event? if it is, writing serial data, notifies main thread, return to
D2, if not, into D3；
Does D3 judge that serial ports has reading event? if it is, reading serial data, notifies main thread, return to
D3, if not, into D4；
D4 closes thread, closes serial ports.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI839987B (en) * | 2022-12-02 | 2024-04-21 | 財團法人金屬工業研究發展中心 | Control method and control system for a burner of an industrial furnace |
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Application publication date: 20191001 |