CN114237028A - double-CPU intelligent combustor control system - Google Patents
double-CPU intelligent combustor control system Download PDFInfo
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- CN114237028A CN114237028A CN202111485324.5A CN202111485324A CN114237028A CN 114237028 A CN114237028 A CN 114237028A CN 202111485324 A CN202111485324 A CN 202111485324A CN 114237028 A CN114237028 A CN 114237028A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
- G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems
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Abstract
The invention discloses a double-CPU intelligent burner control system, which comprises a flame detection module, a control module and a control module, wherein the flame detection module is used for carrying out flame detection on a combustion position of a gas appliance; the control module comprises a first control unit and a second control unit which are respectively connected with the output end of the flame detection module and respectively receive and respond to the flame detection signal; the dual linkage control module is connected with the control module and is used for outputting a gas closing signal to the electric control unit for controlling gas outlet when the control unit I and/or the control unit II outputs a gas supply closing trigger signal; the control module is further configured to: and after the ignition process is executed, judging whether the ignition is successful or not based on the flame detection signal, and if not, executing a preset gas appliance locking instruction until a specified troubleshooting trigger signal is received. This application has the effect of improving the combustion security of gas.
Description
Technical Field
The application relates to the technical field of gas safety control, in particular to an intelligent combustor control system with double CPUs.
Background
Although the heating modes of various cookers, boilers and the like gradually come up with the electric heating mode at present, the gas cookers, the boilers and the like are still indispensable important equipment for partial scenes.
As for gas, as a flammable and explosive substance, safety needs to be particularly concerned in the use process.
The patent with publication number CN206496065U discloses a dual-MCU valve control circuit of a gas appliance, which comprises a main MCU module, an auxiliary MCU module, a valve relay driving module and a valve driving signal detection module, wherein the main MCU module is used for outputting electrical signals to the auxiliary MCU module, the valve relay driving module and the valve driving signal detection module respectively; and the auxiliary MCU module is used for receiving the electric signals of the main MCU module and the valve driving signal detection module and outputting the electric signals to the valve relay driving module according to the analysis and comparison result of the two electric signals. Through adopting the two MCU designs of main MCU module, vice MCU module to can guarantee that MCU sends exact valve control signal when MCU's oscillating frequency changes or MCU internal part circuit became invalid, improve the security that the gas utensil used.
The scheme can be used for improving the accuracy of the MCU control signal and reducing the probability of sending wrong control signals, but the safety restriction capability of the MCU control system under the conditions of abnormal extinguishing and abnormal ignition of gas flame is relatively weak, so that a new technical scheme is provided in the application.
Disclosure of Invention
In order to improve the combustion safety of gas, the application provides a two CPU's intelligent combustor control system.
The application provides a two CPU's intelligent combustor control system adopts following technical scheme:
a dual CPU intelligent combustor control system, comprising:
the flame detection module is used for detecting flame at the combustion position of the gas appliance;
the control module comprises a first control unit and a second control unit which are respectively connected with the output end of the flame detection module and respectively receive and respond to the flame detection signal; and the number of the first and second groups,
the double linkage control module is connected with the control module and is used for outputting a gas closing signal to the electric control unit for controlling gas outlet when the control unit I and/or the control unit II outputs a gas supply closing trigger signal;
the control module is further configured to: and after the ignition process is executed, judging whether the ignition is successful or not based on the flame detection signal, and if not, executing a preset gas appliance locking instruction until a specified troubleshooting trigger signal is received.
Optionally, the flame detection module comprises a flame probe; the flame detection module further includes an isolation detection circuit, the isolation detection circuit including:
a filter circuit connected to the flame probe; and the number of the first and second groups,
and the input end of the optical coupler U1 is connected to the filter circuit, and the output end of the optical coupler U1 is connected to the control module.
Optionally, the dual linkage control module includes:
the input end of the optical coupler II U2 is connected with the output end of the control unit I;
and the base electrode of the NPN type triode Q1 is connected with the output end of the second control unit, the collector electrode of the NPN type triode Q1 is connected with the output end of the second optocoupler U2, and the emitter electrode of the NPN type triode Q1 is connected with an electric control unit for controlling gas outlet.
Optionally, still include fan linkage module, fan linkage module includes:
the on-off of a coil of the relay K1 is controlled by a control switch of a fan preset on the side of the gas appliance, and a normally open contact is connected with the fan in series;
a coil of the relay K2 is connected in series with a limiting resistor R1 and is connected in parallel with the fan;
the normally open contact of the relay K2 is connected in series with the electric control unit.
Optionally, the control module is further configured to: executing combustion recovery logic before outputting the gas shut-off signal; wherein the combustion restoration logic comprises:
judging whether the gas appliance is manually closed or not based on the feedback of an electric control unit for controlling the gas outlet, and if so, ending; if not, triggering a preset ignition instruction;
when the timing reaches the safe time and the feedback of the flame detection module indicates no flame, a gas closing signal is output.
Optionally, the control module is connected to a human-computer interaction module, and the human-computer interaction module includes a display for displaying system data.
Optionally, the human-computer interaction module further includes an alarm unit for performing a field alarm and/or a remote alarm, and the control module is configured to: the fuel gas combustion recovery control device is used for controlling the alarm unit to give an alarm after the combustion recovery logic is executed and the fuel gas closing signal is output.
Optionally, the control module is connected to a gas detection module, and the gas detection module includes a flow detection unit and a pressure detection unit for detecting a gas supply pipe of a gas appliance;
the human-computer interaction module comprises a touch input unit;
the control module is also connected with an electric control opening degree adjusting unit used for adjusting the opening degree of the gas appliance air feed pipe, and is configured to: the method is used for calculating the gas consumption of the past use record based on the feedback of the flow detection unit and the pressure detection unit, recording the control information output to the electric control opening degree adjusting unit in the past use record, and generating a combustion process to wait for being called again and executed.
Optionally, the control module is further configured to: and when the output of the electric control opening regulating unit is not updated, comparing the feedback of the gas detection module, and triggering the alarm unit to execute an alarm action after the difference exceeds a threshold value.
Optionally, the control module uses two STM32F103 as a central processing unit.
In summary, the present application includes at least one of the following beneficial technical effects: the double-CPU architecture scheme interactively restricts and controls gas supply of a gas appliance, and effectively reduces safety accidents possibly caused by control faults under the limit condition of double faults; meanwhile, after the flame is extinguished, the attempt of gas re-ignition can be automatically carried out, and the gas supply is stopped in time after the re-ignition failure.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present application;
fig. 2 is a schematic circuit structure of the present application.
Description of reference numerals: 1. a flame detection module; 2. a control module; 3. a dual linkage control module; 4. a fan linkage module; 5. a human-computer interaction module; 6. and a gas detection module.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses an intelligent combustor control system with double CPUs.
Referring to fig. 1, the dual-CPU intelligent burner control system includes: the device comprises a flame detection module 1, a control module 2 and a dual linkage control module 3; in this embodiment, the flame detection module 1 selects a flame probe, i.e., an ion probe. The embodiment so select the selection probe, and whether not adopt infrared detection, flame body optical detection to judge flame to extinguish because, the fault rate of probe relatively speaking is lower relatively, and is more stable, and other functions that the guarantee that can be better this application can realize.
The control module 2 comprises a first control unit and a second control unit which are respectively connected with the output end of the flame detection module 1 and respectively receive and respond to the flame detection signal. In the embodiment, two sheets of STM32F103 are used as a central processing unit, which is a control board integrating two sheets of STM32F 103.
Referring to fig. 2, based on the above, the flame detection module 1 further includes an isolation detection circuit, which includes:
a filter circuit connected to the flame probe (Fire _ INT in the figure); and the number of the first and second groups,
and the input end of the optical coupler U1 is connected to the filter circuit, and the output end of the optical coupler U1 is connected to the control module 2.
It is understood that, for the input side of the opto-coupler U1, an auxiliary power supply and voltage regulation unit and the like can be arranged. The control module 2 is connected with the optical coupler U1, and actually a pull wire is used as a signal acquisition point.
The optical coupler is selected in consideration of the fact that when the current ignition is electric ignition, the device can be damaged due to the fact that instantaneous voltage in the ignition process, and therefore the safety of the system is improved by means of the isolation capability of the optical coupler.
Note that, for the signal of the flame probe, a conducting wire may be optionally connected, and the current sensor is sleeved on the conducting wire to be used as the acquisition output of the control module, but relatively, the cost of the current sensor is relatively higher due to the acquisition precision, the device manufacturing process, and the like.
It can be understood that the key of the present application is the cooperation of the dual CPU control module and the dual linkage control module 3 to implement the control logic of the following table:
referring to fig. 2, the dual interlock control module 3 includes:
the input end of the optical coupler II U2 is connected with the output end of the control unit I;
and the base electrode of the NPN type triode Q1 is connected with the output end of the second control unit, the collector electrode of the NPN type triode Q1 is connected with the output end of the second optocoupler U2, and the emitter electrode of the NPN type triode Q1 is connected with an electric control unit for controlling gas outlet.
When the first control unit outputs an on signal (namely, a proper voltage), the second optocoupler U2 turns on a collector of the triode Q1; at the moment, if the control unit II outputs an on signal, the electromagnetic valve is controlled to be opened; otherwise, the transistor Q1 is disabled and the solenoid is turned off.
According to the above, the double CPUs are restricted with each other, and once the control signals output by the double CPUs are different due to a fault, the electromagnetic valve is closed certainly, so that the use safety of the gas appliance can be effectively improved; meanwhile, due to the arrangement, once abnormal extinguishing occurs in the using process, the system can timely shut down gas supply.
Based on the above, the control module 2 is further configured to: and after the ignition process is executed, judging whether the ignition is successful or not based on the flame detection signal, and if not, executing a preset gas appliance locking instruction until a specified troubleshooting trigger signal is received.
The information is executed in the ignition process, and is connected to the ignition executing device through the control module 2, or a touch sensor is additionally arranged, and the information is obtained by collecting the action feedback of the ignition switch through the touch sensor.
The application also comprises a fan linkage module 4. In this embodiment, the gas appliance is a household gas stove, and the fan in the fan linkage module 4 is a fan of a range hood in this embodiment.
The fan linkage module 4 includes:
a relay K1, the on-off of the coil of which is controlled by a control switch (SB in the figure) of a fan preset at the side of the gas appliance, and a normally open contact is connected with the fan in series;
a coil of the relay K2 is connected in series with a limiting resistor R1 and is connected in parallel with the fan; the normally open contact of the relay K2 is connected in series with the electronic control unit.
According to the setting, only when the user presses the control switch of the fan to turn on the coil of the relay K1, so that the fan is normally opened and closed and the coil of the relay K2 is turned on, the dual linkage control module 3 is turned on for controlling the electromagnetic valve. Therefore, the system adds a layer of safety mechanism to the gas appliance to ensure that the gas appliance can be ignited only when the air exhaust function is started; in this process, even if under the prerequisite of double chip, according to appearing flame and extinguishing, nevertheless the condition of gas release also can in time send out the gas through the fan, reduces the gas concentration in the current environment atmosphere, reduces the safety risk.
It is noted that the above also applies in conjunction with the following functions of the present system.
The control module 2 is further configured to: executing combustion recovery logic before outputting the gas shut-off signal; wherein the combustion restoration logic comprises:
judging whether the gas appliance is manually closed or not based on the feedback of an electric control unit for controlling the gas outlet, and if so, ending; if not, triggering a preset ignition instruction;
when the timing reaches the safe time and the feedback of the flame detection module 1 indicates no flame, a gas closing signal is output.
According to the arrangement, the system can automatically try to ignite again after the flame is abnormally extinguished, and stop gas supply in time when the ignition attempts still fail for a plurality of times; because, as explained above, the system ensures that the fan is turned on during this process, the gas released during the execution of the combustion recovery logic is sent out, thereby ensuring the safety of combustion.
In order to facilitate the user to know the state of the gas appliance, the gas appliance further comprises a human-computer interaction module 5, wherein the human-computer interaction module 5 comprises a display, such as a 12864 color screen, which is connected to the control module 2 and used for displaying the data of each module.
The human-computer interaction module 5 further comprises a touch input unit, i.e. the control module 2 is connected with a plurality of touch keys, such as a direction key, a confirmation key, a return key, etc. In this embodiment, the keys are mainly arranged to implement the following functions:
the control module 2 is connected with a gas detection module 6, and the gas detection module 6 comprises a flow detection unit (flow sensor) and a pressure detection unit (air pressure sensor) which are used for detecting the air supply pipe of the gas appliance.
The control module 2 is also connected to an electrically controlled opening adjustment unit, such as an electronic flow control valve, for adjusting the opening of the gas-appliance gas feed pipe, and is configured to: the method is used for calculating the gas consumption of the past use record based on the feedback of the flow detection unit and the pressure detection unit, recording the control information output to the electric control opening degree adjusting unit in the past use record, and generating a combustion process to wait for being called again and executed.
Specifically, the explanation is made in conjunction with a certain practical application environment, such as:
when a certain user stews the food A by using a gas cooker, calculating the gas consumption consumed in the stewing process according to the flow and pressure feedback, and generating a record;
when the user stews and cooks the food material A again next time, the touch input unit can be directly operated to select the history records of the same food material, and in the process, the gas consumption of the previous time can be checked, and the less consumed food material can be selected; subsequently, the system automatically controls the gas to be discharged according to the corresponding combustion process to finish one-time stewing.
It can be understood that, when the touch input unit can input characters and the like, the combustion process can be manually matched with food materials and the like for marking, so that the use by a user is facilitated.
According to the application, the cooking and the like of the user can be facilitated, and the gas consumption can be reduced for the user.
The man-machine interaction module 5 also comprises an alarm unit used for on-site alarm and/or remote alarm; such as 1, alarm lamp; 2. a wireless communication module. At this time, the control module 2 is configured to: the fuel gas combustion recovery logic is executed, and the alarm unit is controlled to give an alarm after a fuel gas closing signal is output; the alarm is as follows: 1. the alarm lamp flickers; 2. and sending a short message to the mobile phone of the user through the wireless communication module.
The alarm unit and the related arrangement thereof enable the system to inform the user in time when the gas appliance is abnormal, so that the user can solve the problem in time and the potential safety hazard is reduced.
Based on the gas detection module 6, the control module 2 of the present system is further configured to: and when the output of the electric control opening regulating unit is not updated, comparing the feedback of the gas detection module 6, and triggering the alarm unit to execute an alarm action after the difference exceeds a threshold value.
Specifically, such as:
after the opening is adjusted once, 3S is taken as an interval to collect real-time gas flow and pressure, the previous samples are compared to judge whether the difference value exceeds the threshold value, if so, the gas supply is determined to be unstable, an alarm is sent out through an alarm unit, a user can conveniently find the abnormity of the gas appliance in advance, and the use safety is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A dual CPU intelligent combustor control system, comprising:
the flame detection module (1) is used for detecting flame at the combustion position of the gas appliance;
the control module (2) comprises a first control unit and a second control unit which are respectively connected with the output end of the flame detection module (1) and respectively receive and respond to a flame detection signal; and the number of the first and second groups,
the dual linkage control module (3) is connected to the control module (2) and is used for outputting a gas closing signal to the electric control unit for controlling gas outlet when the control unit I and/or the control unit II outputs a gas supply closing trigger signal;
the control module (2) is further configured to: and after the ignition process is executed, judging whether the ignition is successful or not based on the flame detection signal, and if not, executing a preset gas appliance locking instruction until a specified troubleshooting trigger signal is received.
2. The dual-CPU intelligent combustor control system of claim 1, wherein: the flame detection module (1) comprises a flame probe; the flame detection module (1) further comprises an isolation detection circuit, the isolation detection circuit comprising:
a filter circuit connected to the flame probe; and the number of the first and second groups,
and the input end of the optical coupler U1 is connected with the filter circuit, and the output end of the optical coupler U1 is connected with the control module (2).
3. The dual-CPU intelligent combustor control system of claim 2, wherein: the dual linkage control module (3) comprises:
the input end of the optical coupler II U2 is connected with the output end of the control unit I;
and the base electrode of the NPN type triode Q1 is connected with the output end of the second control unit, the collector electrode of the NPN type triode Q1 is connected with the output end of the second optocoupler U2, and the emitter electrode of the NPN type triode Q1 is connected with an electric control unit for controlling gas outlet.
4. The dual-CPU intelligent combustor control system of claim 3, wherein: still include fan linkage module (4), fan linkage module (4) include:
the on-off of a coil of the relay K1 is controlled by a control switch of a fan preset on the side of the gas appliance, and a normally open contact is connected with the fan in series;
a coil of the relay K2 is connected in series with a limiting resistor R1 and is connected in parallel with the fan;
the normally open contact of the relay K2 is connected in series with the electric control unit.
5. The dual-CPU intelligent combustor control system of claim 1, wherein: the control module (2) is further configured to: executing combustion recovery logic before outputting the gas shut-off signal; wherein the combustion restoration logic comprises:
judging whether the gas appliance is manually closed or not based on the feedback of an electric control unit for controlling the gas outlet, and if so, ending; if not, triggering a preset ignition instruction;
when the timing reaches the safe time and the feedback of the flame detection module (1) indicates no flame, a gas closing signal is output.
6. The dual-CPU intelligent combustor control system of claim 1, wherein: the control module (2) is connected with a human-computer interaction module (5), and the human-computer interaction module (5) comprises a display for displaying system data.
7. The dual-CPU intelligent combustor control system of claim 6, wherein: the human-machine interaction module (5) further comprises an alarm unit for on-site and/or remote alarm, the control module (2) being configured to: the fuel gas combustion recovery control device is used for controlling the alarm unit to give an alarm after the combustion recovery logic is executed and the fuel gas closing signal is output.
8. The dual-CPU intelligent combustor control system of claim 7, wherein: the control module (2) is connected with a gas detection module (6), and the gas detection module (6) comprises a flow detection unit and a pressure detection unit which are used for detecting the gas supply pipe of the gas appliance;
the human-computer interaction module (5) comprises a touch input unit;
the control module (2) is also connected with an electric control opening degree adjusting unit used for adjusting the opening degree of the gas appliance air feed pipe, and is configured to: the method is used for calculating the gas consumption of the past use record based on the feedback of the flow detection unit and the pressure detection unit, recording the control information output to the electric control opening degree adjusting unit in the past use record, and generating a combustion process to wait for being called again and executed.
9. The dual-CPU intelligent combustor control system of claim 8, wherein: the control module (2) is further configured to: and when the output of the electric control opening adjusting unit is not updated, the feedback of the gas detection module (6) is compared, and the alarm unit is triggered to execute an alarm action after the difference value exceeds a threshold value.
10. The dual-CPU intelligent combustor control system of claim 1, wherein: the control module (2) takes two STM32F103 as a central processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111485324.5A CN114237028A (en) | 2021-12-07 | 2021-12-07 | double-CPU intelligent combustor control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111485324.5A CN114237028A (en) | 2021-12-07 | 2021-12-07 | double-CPU intelligent combustor control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114237028A true CN114237028A (en) | 2022-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111485324.5A Withdrawn CN114237028A (en) | 2021-12-07 | 2021-12-07 | double-CPU intelligent combustor control system |
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|---|---|
| CN (1) | CN114237028A (en) |
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2021
- 2021-12-07 CN CN202111485324.5A patent/CN114237028A/en not_active Withdrawn
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Application publication date: 20220325 |