CN113331458A - Combustion system for tobacco baking, electromagnetic interference elimination method, device and medium - Google Patents
Combustion system for tobacco baking, electromagnetic interference elimination method, device and medium Download PDFInfo
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- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/10—Roasting or cooling tobacco
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Abstract
The invention discloses a combustion system for tobacco baking, an electromagnetic interference elimination method, a device and a medium, wherein the combustion system comprises a burner, an air supply device and an electromagnetic interference elimination device, the burner and the air supply device share a power supply circuit, and the electromagnetic interference elimination device is arranged at one end of the power supply circuit, which is connected with the burner; air supply arrangement starts the back to introduce the air to the combustion chamber of combustor, with input into the fuel in the combustion chamber mixes, electromagnetic interference remove device will air supply arrangement operation produce right the electromagnetic signal elimination of combustor interference, the combustor is based on the elimination electromagnetic signal burns the fuel, produces the heat and toasts the tobacco. The invention eliminates the electromagnetic signal generated by the operation of the air supply device through the electromagnetic interference elimination device, avoids the interference on the operation of the combustion machine, ensures the normal operation of the combustion machine and is beneficial to the combustion of the combustion machine to generate stable heat to bake the tobacco.
Description
Technical Field
The invention relates to the technical field of industrial control, in particular to a combustion system for tobacco baking, an electromagnetic interference elimination method, an electromagnetic interference elimination device and a medium.
Background
The types of cigarettes on the market are various, and the cigarettes can be divided into the following types according to the types of raw materials: flue-cured tobacco type, mixed type, spice type (oriental type) and sun-cured tobacco type. The cured tobacco is prepared by taking cured tobacco as a raw material, placing mature tobacco in a curing barn, subjecting the tobacco to appropriate temperature and humidity conditions to enable the components in the tobacco to undergo biochemical change, and drying after the tobacco turns yellow.
At present, to the stoving of flue-cured tobacco, lay the hot gas pipeline usually in the roast room, produce the heat through combustor burning fuel and get into the hot gas pipeline and toast. In order to achieve sufficient combustion, a fan is generally provided to introduce air and fuel to be sufficiently mixed and then combusted. However, the operation of the fan can generate electromagnetic interference to the combustor, which causes abnormal operation of the combustor and even shutdown. Therefore, the heat generated by the combustion of the combustion machine is unstable, and the baking quality of the tobacco is influenced.
Therefore, how to avoid the influence of the electromagnetic interference of the fan operation on the operation of the combustion engine is a problem to be solved urgently at present.
Disclosure of Invention
The invention mainly aims to provide a combustion system for tobacco baking, an electromagnetic interference elimination method, a device and a medium, and aims to solve the technical problem that a combustor is abnormally operated due to electromagnetic interference generated by the operation of a fan in the prior art.
In order to achieve the purpose, the invention provides a combustion system for tobacco baking, which comprises a burner, an air supply device and an electromagnetic interference elimination device, wherein the burner and the air supply device share a power supply circuit, and the electromagnetic interference elimination device is arranged at one end of the power supply circuit, which is connected with the burner;
air supply arrangement starts the back to introduce the air to the combustion chamber of combustor, with input into the fuel in the combustion chamber mixes, electromagnetic interference remove device will air supply arrangement operation produce right the electromagnetic signal elimination of combustor interference, the combustor is based on the elimination electromagnetic signal burns the fuel, produces the heat and toasts the tobacco.
Optionally, the electromagnetic interference cancellation apparatus includes a common mode module and a differential mode module, where the common mode module is configured to cancel an electromagnetic signal whose frequency is greater than a preset frequency threshold, and the differential mode module is configured to cancel an electromagnetic signal whose frequency is less than or equal to the preset frequency threshold.
Optionally, the wires of the power supply line are provided with a shielding outer layer, and the common mode module and the differential mode module both contain a capacitor and an inductance coil.
Further, in order to achieve the above object, the present invention further provides an electromagnetic interference cancellation method applied to the combustion system, wherein the electromagnetic interference cancellation method comprises the following steps:
when the combustion system receives a starting instruction, starting detection is carried out on the combustor, the air supply device and the electromagnetic interference elimination device, and a detection result identifier is generated;
if the detection result is a normal mark, starting the air supply device, introducing air into a combustion chamber of the combustor based on a fan of the air supply device, and mixing the air with fuel in the combustion chamber;
in the process that the air is introduced into the fan, the electromagnetic signal generated by the operation of the air supply device is eliminated based on the electromagnetic interference elimination device, the ignition device of the burner is controlled to ignite, the mixed fuel is burnt, and the generated heat is used for baking the tobacco.
Optionally, the step of eliminating the electromagnetic signal generated by the operation of the air supply device based on the electromagnetic interference elimination device includes:
detecting the frequency value of the electromagnetic signal, judging whether the frequency value is greater than a preset frequency threshold value, and if so, eliminating the electromagnetic signal based on a common mode module in the electromagnetic interference elimination device;
and if the frequency value is less than or equal to a preset frequency threshold value, eliminating the electromagnetic signal based on a differential mode module in the electromagnetic interference elimination device.
Optionally, the step of canceling the electromagnetic signal based on a common mode module in the electromagnetic interference cancellation apparatus is followed by:
detecting whether the elimination rate of the common mode module to the electromagnetic signals is smaller than a preset threshold value or not, and if so, adjusting the capacity of a capacitor in the common mode module;
the step of canceling the electromagnetic signal based on the differential mode module in the electromagnetic interference cancellation device comprises the following steps:
and detecting whether the elimination rate of the differential mode module to the electromagnetic signals is smaller than a preset threshold value, and if so, adjusting the capacity of a capacitor in the differential mode module.
Optionally, the step of detecting the frequency value of the electromagnetic signal is preceded by:
when the combustion system does not comprise the air supply device, detecting a reference electromagnetic signal of a power supply circuit accessed by the combustion engine and a reference frequency value of the reference electromagnetic signal;
said step of detecting a frequency value of said electromagnetic signal comprises:
detecting a real-time electromagnetic signal on a common power supply line of the burner and the air supply device and a real-time frequency value of the real-time electromagnetic signal;
and performing difference operation on the real-time frequency value and the reference frequency value to obtain a frequency value of the electromagnetic signal.
Optionally, if the detection result is identified as a normal identifier, the step of starting the air supply device includes:
if the detection result mark is a normal mark, detecting the air content in the combustion chamber, and judging whether the air content is matched with the fuel content in the combustion chamber;
if the content of the fuel is matched with that of the fuel in the combustion chamber, controlling an ignition device of the combustion machine to ignite, combusting the fuel, and generating heat to bake the tobacco;
and if the fuel content in the combustion chamber does not match, executing the step of starting the air supply device.
Further, to achieve the above object, the present invention also provides an electromagnetic interference cancellation apparatus, including:
the detection module is used for carrying out startup detection on the combustor, the air supply device and the electromagnetic interference elimination device when the combustion system receives a starting instruction, and generating a detection result identifier;
the starting module is used for starting the air supply device if the detection result is identified as a normal identification, and introducing air to a combustion chamber of the combustor based on a fan of the air supply device to be mixed with fuel in the combustion chamber;
and the control module is used for eliminating the electromagnetic signals generated by the operation of the air supply device based on the electromagnetic interference elimination device in the process of introducing air into the fan, controlling the ignition device of the burner to ignite, burning the mixed fuel and generating heat to bake the tobacco.
Further, to achieve the above object, the present invention also provides a readable storage medium, which stores thereon an electromagnetic interference cancellation program, which when executed by a processor, implements the steps of the electromagnetic interference cancellation method as described above.
The invention relates to a combustion system, an electromagnetic interference elimination method, a device and a medium for tobacco baking, wherein the combustion system comprises a burner, an air supply device and an electromagnetic interference elimination device, the burner and the air supply device share a power supply circuit, and the electromagnetic interference elimination device is arranged at one end of the power supply circuit, which is connected with the burner; the air supply device is started to introduce air into a combustion chamber of the combustor and mix the air with fuel input into the combustion chamber; in addition, in the process of introducing air into the air supply device, the electromagnetic interference elimination device eliminates electromagnetic signals which are generated by the operation of the air supply device and interfere with the combustion machine; the combustor burns the fuel on the basis of eliminating the electromagnetic signals, and generates heat to bake the tobacco. Therefore, the electromagnetic interference eliminating device eliminates the electromagnetic signal generated by the operation of the air supply device, avoids the interference on the operation of the combustion machine, ensures the normal operation of the combustion machine, is favorable for the combustion of the combustion machine to generate stable heat to bake the tobacco, and further ensures the baking quality of the tobacco.
Drawings
FIG. 1 is a schematic block diagram of a hardware operating environment involved in an embodiment of a tobacco-curing combustion system according to the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of an EMI cancellation method according to the present invention;
FIG. 3 is a functional block diagram of an EMI cancellation apparatus according to a preferred embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a combustion system for tobacco baking, and referring to fig. 1, fig. 1 is a schematic structural diagram of a hardware operating environment related to an embodiment of the combustion system for tobacco baking.
As shown in fig. 1, the combustion system may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage unit separate from the processor 1001.
Those skilled in the art will appreciate that the hardware configuration of the combustion system illustrated in FIG. 1 does not constitute a limitation of the combustion system, and may include more or fewer components than illustrated, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a readable storage medium, may include therein an operating system, a network communication module, a user interface module, and an electromagnetic interference cancellation program. The operating system is a program for managing and controlling hardware and software resources of the combustion system, and supports the operation of a network communication module, a user interface module, an electromagnetic interference elimination program and other programs or software; the network communication module is used to manage and control the network interface 1004; the user interface module is used to manage and control the user interface 1003.
In the hardware structure of the combustion system shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; the processor 1001 may call the electromagnetic interference cancellation program stored in the memory 1005 and execute the electromagnetic interference cancellation program.
Further, the combustion system for tobacco baking of the invention, in addition to the hardware operating environment structure shown in fig. 1, further comprises a burner, an air supply device and an electromagnetic interference elimination device, wherein the burner and the air supply device share a power supply line, and the electromagnetic interference elimination device is arranged at one end of the power supply line, which is connected to the burner;
air supply arrangement starts the back to introduce the air to the combustion chamber of combustor, with input into the fuel in the combustion chamber mixes, electromagnetic interference remove device will air supply arrangement operation produce right the electromagnetic signal elimination of combustor interference, the combustor is based on the elimination electromagnetic signal burns the fuel, produces the heat and toasts the tobacco.
The combustion system of the embodiment is used for baking tobacco and comprises a combustor, an air supply device and an electromagnetic interference elimination device. And the combustor is provided with a combustion chamber, a fuel input pipeline is connected into the combustion chamber, and a valve and a starting electromagnetic valve are arranged on the pipeline. The fuel, preferably natural gas, is supplied to the combustion chamber from the supply line by opening the valve by controlling the opening of the starting solenoid valve. Air supply arrangement then contains the fan, and the fan sets up fan motor and fan blade, and through the start-up of fan motor, drive fan blade and rotate, realize introducing the air to the combustion chamber, and the fuel intensive mixing of input. After that, the fuel is burnt through the ignition of the ignition device on the combustion machine, and the heat is generated to bake the tobacco.
Furthermore, the burner and the air supply device share a power supply circuit, and the operation of the air supply device can generate an electromagnetic signal which influences the operation of the burner. Therefore, the electromagnetic interference elimination device is arranged at one end of the power supply line connected to the burner, namely the electromagnetic interference elimination device is arranged at the front end of the power supply line of the burner and used for eliminating the electromagnetic signals generated by the air supply device and avoiding the electromagnetic signals from influencing the operation of the burner.
Furthermore, the electromagnetic interference elimination device is preferably in the form of an electromagnetic interference elimination circuit, and the electromagnetic interference elimination circuit is configured to be compatible with elimination of electromagnetic signals of multiple frequencies in consideration of the fact that the fans operate to generate electromagnetic signals with various frequencies and the electromagnetic signals of different frequencies need different signal elimination modes. Specifically, the electromagnetic interference elimination device is set to at least comprise a common mode module and a differential mode module, wherein the common mode module is used for eliminating common mode interference, and the common mode interference is electromagnetic signal interference with frequency larger than a preset frequency threshold; the differential mode module is used for eliminating differential mode interference, and the differential mode interference is electromagnetic signal interference with the frequency smaller than or equal to a preset frequency threshold. In addition, the common mode module and the differential mode module both comprise a capacitor and an inductance coil, and the connection modes of the common mode module and the differential mode module in different modules are different so as to eliminate electromagnetic signals with different frequencies.
Further, the preset frequency threshold for judgment may be a single value or a value interval. If the electromagnetic interference is a single value, the value is preferably 1MHz, and when the frequency of the electromagnetic signal is more than 1MHz, the current interference is determined as common-mode interference and eliminated through a common-mode module; and when the frequency of the electromagnetic signal is not more than 1MHz, determining the current interference as differential mode interference, and eliminating the differential mode interference through a differential mode module. If the preset frequency threshold value is set as a numerical range, the numerical range is preferably 0.5-5 MHz, and when the frequency of the electromagnetic signal is greater than the range, the current interference is determined as common-mode interference and eliminated through a common-mode module; and when the frequency of the electromagnetic signal is not more than the interval, determining the current interference as differential mode interference, and eliminating the differential mode interference through a differential mode module. Therefore, the electromagnetic signals with different frequencies are eliminated through different modules, so that the electromagnetic signals with different frequencies are accurately eliminated, and interference is avoided.
It should be noted that, in order to further improve the degree of eliminating the electromagnetic signals, in this embodiment, besides the electromagnetic interference eliminating device, a shielding outer layer is further disposed on the electric wire of the power supply line to shield the electromagnetic signals and avoid interference. In addition, for
The combustion system comprises a burner, an air supply device and an electromagnetic interference elimination device, wherein the burner and the air supply device share a power supply circuit, and the electromagnetic interference elimination device is arranged at one end, connected to the burner, of the power supply circuit; the air supply device is started to introduce air into a combustion chamber of the combustor and mix the air with fuel input into the combustion chamber; in addition, in the process of introducing air into the air supply device, the electromagnetic interference elimination device eliminates electromagnetic signals which are generated by the operation of the air supply device and interfere with the combustion machine; the combustor burns the fuel on the basis of eliminating the electromagnetic signals, and generates heat to bake the tobacco. Therefore, the electromagnetic interference eliminating device eliminates the electromagnetic signal generated by the operation of the air supply device, avoids the interference on the operation of the combustion machine, ensures the normal operation of the combustion machine, is favorable for the combustion of the combustion machine to generate stable heat to bake the tobacco, and further ensures the baking quality of the tobacco.
The invention also provides an electromagnetic interference elimination method, which is applied to the combustion system.
Referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the electromagnetic interference cancellation method of the present invention.
While a logical order is shown in the flow chart, in some cases, the steps shown or described may be performed in an order different than presented herein. Specifically, the electromagnetic interference cancellation method of the present embodiment includes:
step S10, when the combustion system receives a start instruction, the start detection is carried out on the combustor, the air supply device and the electromagnetic interference elimination device, and a detection result identifier is generated;
the electromagnetic interference elimination method in the embodiment is applied to the combustion system, and is suitable for eliminating the electromagnetic signal generated by the operation of the air supply device in the combustion system through the electromagnetic interference elimination device in the combustion system, so that the electromagnetic signal is prevented from generating interference on the operation of the combustor in the combustion system. Specifically, the combustion system is provided with a key for triggering starting, the key may be a physical key arranged on the combustion system, or a physical key on a remote control device, or a virtual key on the intelligent terminal, and a starting instruction is initiated by triggering the key. When the combustion system receives the starting instruction, the combustion machine, the air supply device and the electromagnetic interference device are subjected to starting detection, whether the combustion machine, the air supply device and the electromagnetic interference elimination device can normally operate or not is detected, and a monitoring result identifier is generated.
Further, if the detection result shows that the combustor, the air supply device and the electromagnetic interference elimination device can normally operate, the current state of the combustion system supports the combustion of the fuel, and the detection result is marked to be a normal mark. Otherwise, if any one of the combustor, the air supply device and the electromagnetic interference elimination device can not normally operate, the current state of the combustion system does not support operation, so that the detection result identifier is generated into an abnormal identifier, and abnormal prompt information is output to prompt timely handling of the abnormality.
Step S20, if the detection result is a normal mark, the air supply device is started, and air is introduced into a combustion chamber of the combustor based on a fan of the air supply device and is mixed with fuel in the combustion chamber;
furthermore, after the generated detection result is determined to be the normal mark, the air supply device is started, and the fan blade is driven to rotate by the operation of the motor of the fan in the air supply device, so that air is introduced into the combustion chamber of the combustor and is mixed with the fuel in the combustion chamber. Wherein, the fuel in the combustion chamber is selected as natural gas, and is input into the combustion chamber through the opening of a valve on a fuel input pipeline.
Understandably, adequate combustion of fuel relies on adequate mixing of fuel and air, with a mixing ratio relationship between fuel and air. Therefore, before the detection result is determined to be the normal mark and the air supply device is started to introduce air, whether the air supply device needs to be started and the air supply amount of the air supply device need to be determined according to whether the fuel content and the air content in the combustion chamber meet the proportional relation. Specifically, if the detection result is identified as a normal identifier, the step of starting the air supply device includes:
step S21, if the detection result is a normal mark, detecting the air content in the combustion chamber, and judging whether the air content is matched with the fuel content in the combustion chamber;
step S22, if the content of the fuel in the combustion chamber is matched, controlling an ignition device of the combustion machine to ignite, combusting the fuel, and generating heat to bake the tobacco;
and step S23, if the fuel content in the combustion chamber is not matched, the air supply device is started.
And further, after the detection result is determined to be the normal mark, the air content in the combustion chamber is continuously detected. And the fuel content in the combustion chamber is determined by detecting the amount of fuel introduced by opening the valve, and then a ratio is made between the air content and the fuel content, and whether the ratio between the air content and the fuel content is matched with a required mixing proportional relation is judged. If the air content in the combustion chamber matches the fuel content, the air content in the combustion chamber is determined to match the fuel content. Otherwise, if the ratio does not match the proportional relationship with the demand, it is determined that the air content in the combustion chamber does not match the fuel content therein. It should be noted that the matching between the ratio and the proportional relationship can be determined by setting the proportional relationship as a numerical interval, and when the ratio falls into the numerical interval, it is determined that the ratio and the proportional relationship are matched; otherwise, if the ratio does not fall into the value interval, the two are judged not to match.
Furthermore, if the air content is matched with the fuel content, the air and the fuel in the combustion chamber are fully mixed, and air is not required to be introduced from the outside, so that the ignition device of the combustion machine is directly controlled to ignite, the fuel is combusted, and the tobacco is roasted by the heat generated by combustion. On the contrary, if the air content and the fuel content are not matched, the air content in the combustion chamber is low, the requirement of fully mixing with the fuel cannot be met, and the air needs to be introduced from the outside. Therefore, the air supply device is started to drive the fan blade to rotate and introduce air into the combustion chamber through the operation of the motor of the fan in the air supply device, and the air is fully mixed with the fuel in the combustion chamber.
And step S30, in the process of introducing air into the fan, eliminating the electromagnetic signal generated by the operation of the air supply device based on the electromagnetic interference elimination device, controlling the ignition device of the burner to ignite, burning the mixed fuel, and generating heat to bake the tobacco.
Further, in the process of introducing air into the combustion chamber during the operation of the fan, the fan can generate an electromagnetic signal, and the electromagnetic signal is transmitted to the combustion machine through a power supply circuit shared by the air supply device and the combustion machine to influence the operation of the combustion machine. At this time, the electromagnetic interference eliminating device provided at one end of the burner is connected to the power supply line, and the electromagnetic signal transmitted is eliminated. Meanwhile, an ignition device of the burner is controlled to ignite the fuel in the combustion chamber, so that the mixed fuel is combusted to generate heat, and the tobacco is roasted. Because the electromagnetic interference elimination device eliminates the transmitted electromagnetic signals, the combustion of the fuel by the combustion machine is not interfered by the electromagnetic signals, thereby being beneficial to the stable combustion of the combustion machine, generating stable heat to bake the tobacco and ensuring the baking quality of the tobacco.
The invention relates to an electromagnetic interference elimination method, when a combustion system receives a starting instruction, starting detection is carried out on a burner, an air supply device and an electromagnetic interference elimination device to generate a detection result to show, if the detection result is a normal mark, the air supply device is started to introduce air into a combustion chamber of the burner by a fan based on the air supply device to be mixed with fuel in the combustion chamber when the burner, the air supply device and the electromagnetic interference elimination device in the combustion system support combustion; in the process of introducing air into the fan, an electromagnetic interference elimination device arranged at one end of a power supply line connected to the combustor eliminates electromagnetic signals generated by the operation of the air supply device and interfering with the combustor; meanwhile, an ignition device of the burner is controlled to ignite, the mixed fuel is burnt, and heat is generated to bake the tobacco. Therefore, the electromagnetic interference eliminating device eliminates the electromagnetic signal generated by the operation of the air supply device, avoids the interference on the operation of the combustion machine, ensures the normal operation of the combustion machine, is favorable for the combustion of the combustion machine to generate stable heat to bake the tobacco, and further ensures the baking quality of the tobacco.
Further, based on the first embodiment of the electromagnetic interference cancellation method of the present invention, a second embodiment of the electromagnetic interference cancellation method of the present invention is proposed.
The second embodiment of the electromagnetic interference elimination method is different from the first embodiment of the electromagnetic interference elimination method in that the step of eliminating the electromagnetic signal generated by the operation of the air supply device based on the electromagnetic interference elimination device comprises the following steps:
step S31, detecting the frequency value of the electromagnetic signal, and judging whether the frequency value is larger than a preset frequency threshold value, if so, eliminating the electromagnetic signal based on a common mode module in the electromagnetic interference eliminating device;
the electromagnetic interference elimination device of the embodiment comprises a common mode module and a differential mode module, and is used for eliminating electromagnetic signals with different frequencies generated by the operation of the air supply device. The common-mode module is used for eliminating common-mode interference, and the common-mode interference is electromagnetic signal interference with frequency larger than a certain value; the differential mode module is used for eliminating differential mode interference, and the differential mode interference is electromagnetic signal interference with the frequency smaller than or equal to a certain value. Specifically, a preset period and a preset frequency threshold are preset according to requirements, the preset period represents a detected time period so as to detect the change condition of the frequency of the electromagnetic signal at different time, and then elimination is performed according to different modules; the preset frequency threshold may be a single value or a range of values. If it is a single value, the value is preferably 1 MHz; the preset frequency threshold is set as a value interval, and the value interval is preferably 0.5-5 MHz. And detecting the frequency value of the electromagnetic signal generated by the operation of the air supply device every preset period, comparing the detected frequency value with a preset frequency threshold value, and judging whether the frequency value is greater than the preset frequency threshold value. If the frequency is larger than the preset frequency threshold, the interference formed by the electromagnetic signals is common-mode interference, and therefore the electromagnetic signals are eliminated through a common-mode module in the electromagnetic interference device.
Understandably, the electromagnetic signal is generated due to the operation of the air supply device, so the detection of the frequency value of the electromagnetic signal can be realized according to the reference frequency value of the power supply circuit when the air supply device is not installed and the difference value between the real-time frequency values of the power supply circuit after the air supply device is installed. Specifically, the step of detecting the frequency value of the electromagnetic signal is preceded by:
step a, when the combustion system does not comprise the air supply device, detecting a reference electromagnetic signal of a power supply circuit accessed by the combustion engine and a reference frequency value of the reference electromagnetic signal;
further, the combustion system is configured to not include an air supply device, the operation of the combustion machine is controlled under the condition that the air supply device is not included, the electromagnetic signal on a power supply line connected to the combustion machine at the moment is detected to serve as a reference electromagnetic signal, the frequency of the reference electromagnetic signal is detected, and the obtained reference frequency value is stored in a storage unit butted with the combustion device.
Still further, the step of detecting the frequency value of the electromagnetic signal comprises:
b1, detecting a real-time electromagnetic signal on a common power supply circuit of the burner and the air supply device and a real-time frequency value of the real-time electromagnetic signal;
and b2, performing difference operation on the real-time frequency value and the reference frequency value to obtain the frequency value of the electromagnetic signal.
Furthermore, when the air supply device is in an operating state in the combustion system comprising the air supply device, an electromagnetic signal on a common power supply line of the combustion machine and the air supply device is detected. The electromagnetic signal comprises an electromagnetic signal generated by the operation of the air supply device and an electromagnetic signal generated by the operation of the combustion engine, and is used as a real-time electromagnetic signal, and the frequency of the real-time electromagnetic signal is detected and used as a real-time frequency value.
Furthermore, the reference frequency value is read from the storage unit, and the difference value operation is performed between the real-time frequency value and the reference frequency value, and the operation result is the frequency value of the electromagnetic signal generated by the operation of the air supply device.
Understandably, the common mode module is used for eliminating the electromagnetic signals of which the frequency values are greater than the preset frequency threshold, and the frequency values of the electromagnetic signals are beyond the preset frequency threshold and have uncertainty; the frequency may be greater than the predetermined frequency threshold, or may be less than the predetermined frequency threshold. For electromagnetic signals of different frequency values, the common mode module can be eliminated by adjusting the capacity of the capacitor of the common mode module. Specifically, the step of eliminating the electromagnetic signal based on the common mode module in the electromagnetic interference eliminating device includes:
c, detecting whether the elimination rate of the common mode module to the electromagnetic signals is smaller than a preset threshold value, and if so, adjusting the capacity of a capacitor in the common mode module;
further, the frequency value of the electromagnetic signal is detected, and simultaneously, the semaphore of the electromagnetic signal is also detected; and after the electromagnetic signal is eliminated by the electromagnetic interference eliminating device, the eliminated semaphore is detected, and the elimination rate of the common mode module to the electromagnetic signal is determined according to the ratio of the eliminated semaphore to the initially detected semaphore. And comparing the elimination rate with a preset threshold value, and judging whether the elimination rate is smaller than the preset threshold value. The preset threshold value is a numerical value which is preset and represents the electromagnetic signal elimination effect of the common mode module. If the elimination rate is determined to be smaller than the preset threshold value through comparison, the elimination effect is poor, the capacity of the capacitor in the common mode module is adjusted at the moment, the elimination rate of the electromagnetic signal is improved through the adjustment of the capacity of the capacitor, and the elimination effect of the electromagnetic signal is improved. If the elimination ratio is determined to be not less than the preset threshold value through comparison, the common mode module is used for eliminating most of the electromagnetic signals, the elimination effect of the current common mode module on the electromagnetic signals is good, and therefore the electromagnetic signals are continuously eliminated through the current common mode module, and the elimination effect is ensured.
Step S32, if the frequency value is less than or equal to a preset frequency threshold, the electromagnetic signal is eliminated based on a differential module in the electromagnetic interference elimination apparatus.
Understandably, when determining whether the frequency value is greater than the preset frequency threshold, the obtained determination result may be that the frequency value is less than or equal to the preset frequency threshold. In this regard, if the determined frequency value is less than or equal to the predetermined frequency threshold, it is determined that the interference caused by the electromagnetic signal is differential mode interference. At this time, the electromagnetic signal is eliminated by a differential mode module in the electromagnetic interference device.
Similarly, the differential mode module is used for eliminating the electromagnetic signals of which the frequency values are less than or equal to the preset frequency threshold, and the frequency values of the electromagnetic signals have uncertainty when being less than or equal to the preset frequency threshold; the frequency threshold may be smaller than the preset frequency threshold more, or may be smaller than the preset frequency threshold less. For electromagnetic signals of different frequency values, the differential mode module can be eliminated by adjusting the capacity of a capacitor of the differential mode module. Specifically, the step of eliminating the electromagnetic signal based on the differential mode module in the electromagnetic interference eliminating device comprises the following steps:
and d, detecting whether the elimination rate of the differential mode module to the electromagnetic signals is smaller than a preset threshold value, and if so, adjusting the capacity of a capacitor in the differential mode module.
Further, after the electromagnetic signal is eliminated by the electromagnetic interference elimination device, the eliminated semaphore is detected, and the elimination rate of the differential mode module on the electromagnetic signal is determined according to the ratio of the eliminated semaphore to the initially detected semaphore. And comparing the elimination rate with a preset threshold value, and judging whether the elimination rate is smaller than the preset threshold value. If the elimination rate is determined to be smaller than the preset threshold value through comparison, the elimination effect is poor, the capacity of the capacitor in the differential mode module is adjusted at the moment, the elimination rate of the electromagnetic signals is improved through adjustment of the capacity of the capacitor, and the elimination effect of the electromagnetic signals is improved. If the elimination rate is determined to be not less than the preset threshold value through comparison, the difference module is used for eliminating most of the electromagnetic signals, the current difference module has a good elimination effect on the electromagnetic signals, and therefore the current difference module is used for eliminating the electromagnetic signals continuously to ensure the elimination effect.
Therefore, the present embodiment is configured to include the common mode module and the differential mode module to eliminate the electromagnetic signals with different frequencies. And, the capacity of the capacitor in the common mode module and in the differential mode module is set to be adjustable; when the elimination rate of the electromagnetic signals is low, the elimination rate is improved by adjusting the capacity of the capacitor, and the elimination effect of the electromagnetic signals with different frequencies is ensured.
The embodiment of the invention also provides an electromagnetic interference elimination device. Referring to fig. 3, the electromagnetic interference cancellation apparatus includes:
the detection module 10 is configured to perform startup detection on the combustor, the air supply device, and the electromagnetic interference cancellation device when the combustion system receives a start instruction, and generate a detection result identifier;
the starting module 20 is configured to start the air supply device if the detection result is identified as a normal identifier, introduce air into a combustion chamber of the combustor based on a fan of the air supply device, and mix the air with fuel in the combustion chamber;
and the control module 30 is used for eliminating electromagnetic signals generated by the operation of the air supply device based on the electromagnetic interference elimination device in the process of introducing air into the fan, controlling the ignition device of the burner to ignite, burning the mixed fuel and generating heat to bake the tobacco.
Further, the control module 30 includes:
the detection unit is used for detecting the frequency value of the electromagnetic signal, judging whether the frequency value is greater than a preset frequency threshold value or not, and if so, eliminating the electromagnetic signal based on a common mode module in the electromagnetic interference elimination device;
and the eliminating unit is used for eliminating the electromagnetic signal based on a differential mode module in the electromagnetic interference eliminating device if the frequency value is less than or equal to a preset frequency threshold value.
Further, the control module 30 includes: an adjustment unit for:
detecting whether the elimination rate of the common mode module to the electromagnetic signals is smaller than a preset threshold value or not, and if so, adjusting the capacity of a capacitor in the common mode module;
and detecting whether the elimination rate of the differential mode module to the electromagnetic signals is smaller than a preset threshold value, and if so, adjusting the capacity of a capacitor in the differential mode module.
Further, the detection unit is further configured to:
when the combustion system does not comprise the air supply device, detecting a reference electromagnetic signal of a power supply circuit accessed by the combustion engine and a reference frequency value of the reference electromagnetic signal;
detecting a real-time electromagnetic signal on a common power supply line of the burner and the air supply device and a real-time frequency value of the real-time electromagnetic signal;
and performing difference operation on the real-time frequency value and the reference frequency value to obtain a frequency value of the electromagnetic signal.
Further, the starting module further comprises:
the judging unit is used for detecting the air content in the combustion chamber and judging whether the air content is matched with the fuel content in the combustion chamber or not if the detection result is a normal mark;
the control unit is used for controlling an ignition device of the combustor to ignite if the content of the fuel in the combustion chamber is matched with that of the fuel in the combustion chamber, so that the fuel is combusted, and heat is generated to bake tobacco;
and the execution unit is used for executing the step of starting the air supply device if the fuel content in the combustion chamber is not matched with the fuel content in the combustion chamber.
The specific implementation of the electromagnetic interference cancellation apparatus of the present invention is substantially the same as the embodiments of the electromagnetic interference cancellation apparatus method described above, and is not described herein again.
The embodiment of the invention also provides a readable storage medium. The readable storage medium has stored thereon an electromagnetic interference cancellation program that, when executed by the processor, performs the steps of the combustion engine based electromagnetic interference cancellation method as described above.
The readable storage medium of the present invention may be a computer readable storage medium, and the specific implementation manner of the readable storage medium of the present invention is substantially the same as that of each embodiment of the above-mentioned method for eliminating electromagnetic interference based on a combustion engine, and will not be described herein again.
The present invention is described in connection with the accompanying drawings, but the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various changes without departing from the spirit and scope of the invention as defined by the appended claims, and all changes that come within the meaning and range of equivalency of the specification and drawings that are obvious from the description and the attached claims are intended to be embraced therein.
Claims (10)
1. A combustion system for tobacco baking is characterized by comprising a burner, an air supply device and an electromagnetic interference elimination device, wherein the burner and the air supply device share a power supply circuit, and the electromagnetic interference elimination device is arranged at one end of the power supply circuit, which is connected to the burner;
air supply arrangement starts the back to introduce the air to the combustion chamber of combustor, with input into the fuel in the combustion chamber mixes, electromagnetic interference remove device will air supply arrangement operation produce right the electromagnetic signal elimination of combustor interference, the combustor is based on the elimination electromagnetic signal burns the fuel, produces the heat and toasts the tobacco.
2. The combustion system of claim 1 wherein the emi cancellation apparatus includes a common mode module for canceling electromagnetic signals having a frequency greater than a predetermined frequency threshold and a differential mode module for canceling electromagnetic signals having a frequency less than or equal to the predetermined frequency threshold.
3. The combustion system of claim 2, wherein the wires of the power supply line are provided with a shielding outer layer, and the common mode module and the differential mode module each contain a capacitor and an induction coil.
4. An electromagnetic interference cancellation method applied to the combustion system according to any one of claims 1 to 3, the electromagnetic interference cancellation method comprising the steps of:
when the combustion system receives a starting instruction, starting detection is carried out on the combustor, the air supply device and the electromagnetic interference elimination device, and a detection result identifier is generated;
if the detection result is a normal mark, starting the air supply device, introducing air into a combustion chamber of the combustor based on a fan of the air supply device, and mixing the air with fuel in the combustion chamber;
in the process that the air is introduced into the fan, the electromagnetic signal generated by the operation of the air supply device is eliminated based on the electromagnetic interference elimination device, the ignition device of the burner is controlled to ignite, the mixed fuel is burnt, and the generated heat is used for baking the tobacco.
5. The EMI cancellation method as set forth in claim 4, wherein said step of canceling the electromagnetic signals generated by the operation of said air blowing device based on said EMI cancellation device includes:
detecting the frequency value of the electromagnetic signal, judging whether the frequency value is greater than a preset frequency threshold value, and if so, eliminating the electromagnetic signal based on a common mode module in the electromagnetic interference elimination device;
and if the frequency value is less than or equal to a preset frequency threshold value, eliminating the electromagnetic signal based on a differential mode module in the electromagnetic interference elimination device.
6. The EMI cancellation method of claim 5, wherein said step of canceling the electromagnetic signal based on a common mode module in the EMI cancellation apparatus is followed by:
detecting whether the elimination rate of the common mode module to the electromagnetic signals is smaller than a preset threshold value or not, and if so, adjusting the capacity of a capacitor in the common mode module;
the step of canceling the electromagnetic signal based on the differential mode module in the electromagnetic interference cancellation device comprises the following steps:
and detecting whether the elimination rate of the differential mode module to the electromagnetic signals is smaller than a preset threshold value, and if so, adjusting the capacity of a capacitor in the differential mode module.
7. The method of claim 5, wherein the step of detecting the frequency value of the electromagnetic signal is preceded by:
when the combustion system does not comprise the air supply device, detecting a reference electromagnetic signal of a power supply circuit accessed by the combustion engine and a reference frequency value of the reference electromagnetic signal;
said step of detecting a frequency value of said electromagnetic signal comprises:
detecting a real-time electromagnetic signal on a common power supply line of the burner and the air supply device and a real-time frequency value of the real-time electromagnetic signal;
and performing difference operation on the real-time frequency value and the reference frequency value to obtain a frequency value of the electromagnetic signal.
8. The method according to any one of claims 4 to 7, wherein the step of activating the blowing device if the detection result is identified as a normal identifier includes:
if the detection result mark is a normal mark, detecting the air content in the combustion chamber, and judging whether the air content is matched with the fuel content in the combustion chamber;
if the content of the fuel is matched with that of the fuel in the combustion chamber, controlling an ignition device of the combustion machine to ignite, combusting the fuel, and generating heat to bake the tobacco;
and if the fuel content in the combustion chamber does not match, executing the step of starting the air supply device.
9. An electromagnetic interference cancellation apparatus, characterized in that the electromagnetic interference cancellation apparatus comprises:
the detection module is used for carrying out startup detection on the combustor, the air supply device and the electromagnetic interference elimination device when the combustion system receives a starting instruction, and generating a detection result identifier;
the starting module is used for starting the air supply device if the detection result is identified as a normal identification, and introducing air to a combustion chamber of the combustor based on a fan of the air supply device to be mixed with fuel in the combustion chamber;
and the control module is used for eliminating the electromagnetic signals generated by the operation of the air supply device based on the electromagnetic interference elimination device in the process of introducing air into the fan, controlling the ignition device of the burner to ignite, burning the mixed fuel and generating heat to bake the tobacco.
10. A readable storage medium, having an electromagnetic interference cancellation program stored thereon, which when executed by a processor implements the steps of the electromagnetic interference cancellation method according to any one of claims 4-8.
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| CN113331458B (en) | 2022-09-27 |
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