Electric precision regulating valve control system and control method thereof

Abstract

The invention belongs to the technical field of engineering elements, and particularly relates to a valve, in particular to an electric precision regulating valve control system and a control method thereof.The electric precision regulating valve control system comprises a shell, a valve seat, a control module, a driving mechanism, a photoelectric door module and a timing module, and the driving mechanism, the photoelectric door module and the timing module are electrically connected with the control module; the valve seat is connected with the shell; the photoelectric door module is arranged in the shell; the driving mechanism is connected with a piston mechanism; the piston mechanism is arranged in the valve seat; the control module is configured to control the driving mechanism to drive the piston mechanism to move so as to adjust the opening degree of the flow channel in the valve seat, and when the driving mechanism triggers the photoelectric door module, the control module judges that the flow channel is fully opened; and the control module is configured to calibrate the second signal when the second signal corresponding to the driving mechanism is not matched with the first signal sent by the timing module, so that calibration of the control module is realized, and inaccurate control of the driving mechanism caused by noise increase in the control module is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering components, specifically relates to valves, and particularly relates to an electric precision regulating valve control system and a control method thereof. Background Art

[0002] The control system in the valve will generate irregular Gaussian noise after long-term operation. Moreover, as the service time of the control system increases, the aging of its internal components will also lead to an increase in Gaussian noise, resulting in an overall increase in the Gaussian noise level in the system and affecting the motor control accuracy. For example, it may reduce the accuracy of motor speed control.

[0003] Therefore, due to the technical problem that the noise generated by the valve control system during long-term operation increases and causes a decrease in valve control accuracy, it is necessary to design an electric precision regulating valve control system and a control method thereof.

[0004] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application. Therefore, the above description is not considered as information of the prior art. Summary of the Invention

[0005] The embodiments of the present disclosure provide at least an electric precision regulating valve control system and a control method thereof.

[0006] In a first aspect, the embodiments of the present disclosure provide an electric precision regulating valve control system, including: A housing, a valve seat, and a control module, as well as a driving mechanism, a photoelectric gate module, and a timing module electrically connected to the control module; The valve seat is connected to the housing; The photoelectric gate module is disposed in the housing; The driving mechanism is connected to a piston mechanism, and the piston mechanism is disposed in the valve seat; The control module is configured to control the driving mechanism to drive the piston mechanism to move so as to adjust the opening degree of the flow channel in the valve seat, and when the driving mechanism triggers the photoelectric gate module, the control module determines that the flow channel is fully opened; and The control module is configured to calibrate the second signal when the second signal corresponding to the driving mechanism does not match the first signal sent by the timing module.

[0007] In an optional implementation manner, the driving mechanism includes: a motor assembly and a rotating shaft screw; The motor assembly is disposed in the housing; The motor assembly is electrically connected to the control module, and the control module drives the motor assembly to work through the second signal; The rotating shaft screw rod is arranged in the motor assembly, and the motor assembly drives the rotating shaft screw rod to move; One end of the rotating shaft screw rod is connected to the piston mechanism, and the other end of the rotating shaft screw rod touches the photoelectric switch module after moving.

[0008] In an alternative embodiment, the piston mechanism includes: a transmission slider and a diaphragm; The transmission slider is connected to one end of the rotating shaft screw rod; A limiting cavity is arranged in the housing, the limiting cavity is communicated with the valve seat, the transmission slider is slidably arranged in the limiting cavity, and the transmission slider passes through the limiting cavity and extends into the valve seat and then is connected to the diaphragm; The diaphragm is arranged in the valve seat; When the rotating shaft screw rod moves, it drives the transmission slider to move, so as to drive the conical protrusion on the diaphragm to move.

[0009] In an alternative embodiment, a chamber is opened in the valve seat, one side of the chamber close to the housing is open, and the diaphragm covers the opening; A ring body is arranged on the diaphragm; An annular groove is arranged in the valve seat, the annular groove surrounds the opening of the chamber, and the ring body is located in the annular groove; The flow channel includes: a first flow channel and a second flow channel; One end of the first flow channel is communicated with a first interface on the valve seat, and the other end is communicated with the chamber; One end of the second flow channel is communicated with a second interface on the valve seat, and the other end is communicated with the chamber; A conical protrusion is arranged on the diaphragm, and the conical protrusion extends into one end where the first flow channel is communicated with the chamber to adjust the opening degree of the first flow channel and adjust the opening degree of the flow channel in the valve seat.

[0010] In an alternative embodiment, the control module, the photoelectric switch module and the timing module are all electrically connected to a power supply module, and a controller is arranged in the power supply module; The controller in the power supply module is configured to receive a second signal sent by the control module and a first signal sent by the timing module, and then compare the first signal with the second signal. If the difference between the two exceeds a preset comparison range, it is determined that the second signal does not match the first signal, that is, it is determined that the second signal is abnormal. At this time, the controller sends a calibration instruction to the control module; The control module sends a second signal to the driving mechanism to control the operation of the motor assembly in the driving mechanism; The first signal is the signal sent by the timing module and serves as the clock signal of the control module. The second signal is the signal sent by the control module to control the operation of the driving mechanism.

[0011] In an alternative embodiment, the control module is further configured to send a restart signal to the power module after receiving a calibration instruction. The power module restarts after receiving the restart signal, and the control module restarts. After the restart, the control module compares the parameters after restart with the preset inspection parameters, obtains the difference between the parameters after restart and the inspection parameters, inputs the difference into the filtering sub-module in the control module, and obtains a new second signal.

[0012] In an alternative embodiment, the control module is further configured to send the new second signal to the power module. The controller in the power module compares the new second signal with the first signal. If the difference between the two is within the preset comparison range, it is determined that the new second signal is normal. At this time, the control module sends the new second signal to the drive mechanism to control the motor assembly in the drive mechanism to work; If the difference between the two is outside the preset comparison range, the difference at this time is fed back to the control module. The control module controls the filtering sub-module therein to change the filtering method. After changing the filtering method, the new second signal is sent to the power module again to be compared with the first signal until the difference between the two is within the preset comparison range; The filtering methods include: mean filtering, median filtering, moving average filtering, and exponentially weighted moving average filtering.

[0013] In an alternative embodiment, when the control module sends the new second signal to the drive mechanism to control the motor assembly in the drive mechanism to work, it is further configured to obtain the real-time motor pulse control signal corresponding to the motor assembly to determine the filtering method corresponding to the real-time motor pulse control signal, that is Obtain a number of real-time motor pulse control signals within a unit time; If the number of real-time motor pulse control signals is equal to the preset standard number, the variance values corresponding to all real-time motor pulse control signals are within the preset range, and the number of real-time motor pulse control signals exceeding the preset threshold range is less than or equal to the preset number, mean filtering is used to filter the real-time motor pulse control signals; If the number of real-time motor pulse control signals is equal to the preset standard number, the variance values corresponding to all real-time motor pulse control signals are outside the preset range, and the number of real-time motor pulse control signals exceeding the preset threshold range is less than or equal to the preset number, median filtering is used to filter the real-time motor pulse control signals; If the number of real-time motor pulse control signals is less than or greater than the preset standard number, and the number of real-time motor pulse control signals exceeding the preset threshold range is less than or equal to the preset number, moving average filtering is used to filter the real-time motor pulse control signals; If the number of real-time motor pulse control signals is less than or greater than a preset standard number, and the number of real-time motor pulse control signals exceeding the preset threshold range is greater than a preset number, exponential weighted moving average filtering is used to filter the real-time motor pulse control signals; If the number of real-time motor pulse control signals is equal to the preset standard number, and the number of real-time motor pulse control signals exceeding the preset threshold range is greater than a preset number, exponential weighted moving average filtering is used to filter the real-time motor pulse control signals.

[0014] In an alternative embodiment, the timing module is electrically connected to the photoelectric gate module. The timing module is configured to control the lamp in the photoelectric gate module to be lit, and after the lamp is lit, the control module determines that the photoelectric gate module is triggered.

[0015] In a second aspect, an embodiment of the present disclosure further provides a control method using the above-mentioned electric precision regulating valve control system, including: The control module controls the driving mechanism to drive the piston mechanism to move to adjust the opening degree of the flow channel in the valve seat, and when the driving mechanism triggers the photoelectric gate module, the control module determines that the flow channel is fully opened; and The control module calibrates the second signal when the second signal corresponding to the driving mechanism does not match the first signal sent by the timing module.

[0016] The beneficial effect of the present invention is that the electric precision regulating valve control system of the present invention includes: a housing, a valve seat, and a control module, as well as a driving mechanism, a photoelectric gate module, and a timing module electrically connected to the control module; the valve seat is connected to the housing; the photoelectric gate module is disposed in the housing; the driving mechanism is connected to a piston mechanism, and the piston mechanism is disposed in the valve seat; the control module is configured to control the driving mechanism to drive the piston mechanism to move to adjust the opening degree of the flow channel in the valve seat, and when the driving mechanism triggers the photoelectric gate module, the control module determines that the flow channel is fully opened; and the control module is configured to calibrate the second signal when the second signal corresponding to the driving mechanism does not match the first signal sent by the timing module, thereby realizing the calibration of the control module and avoiding inaccurate control of the driving mechanism caused by increased noise in the control module.

[0017] Other features and advantages of the present invention will be described in the following description, and, in part, will be obvious from the description, or will be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the description and the drawings.

[0018] To make the above objectives, features, and advantages of the present invention more obvious and understandable, specific preferred embodiments are hereby given, and in conjunction with the accompanying drawings, the following detailed description is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the structure of an electric precision control valve system provided by an embodiment of the present disclosure; Figure 2 Cross-sectional view of an electric precision control valve system provided by an embodiment of the present disclosure; Figure 3 Principle block diagram of an electric precision control valve system provided by an embodiment of the present disclosure.

[0021] In the figure: 1 housing, 11 limiting cavity; 2 valve seat, 21 chamber, 22 annular groove, 23 flow channel, 231 first flow channel, 232 second flow channel, 24 first interface, 25 second interface; 3 driving mechanism, 31 motor assembly, 32 rotating shaft screw rod, 33 screw rod tooth sleeve; 4 piston mechanism, 41 transmission slider, 42 diaphragm, 421 ring body, 422 conical protrusion, 423 arc ring; 5 photoelectric door module. Specific embodiments

[0022] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0023] As used herein, phrases such as "in one embodiment", "according to one embodiment", "in some embodiments", etc. generally refer to the fact that the specific feature, structure, or characteristic after such phrase can be included in at least one embodiment of the present disclosure. Thus, a specific feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, terms such as "example", "exemplary", etc. are used "as an example, instance, or illustration. Any embodiment, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other embodiments, aspects, or designs. Instead, the use of terms such as "example", "exemplary", etc. is intended to present concepts in a concrete manner.

[0024] For a valve control system that works for a long time, irregular Gaussian noise will be generated in the control system. As the usage time of the control system increases, electronic components will gradually age. Components such as resistors and capacitors will have changed thermal noise after aging. When a resistor ages, its internal structure changes, the thermal motion of electrons becomes more disordered, and the thermal noise increases, resulting in an increase in the standard deviation of Gaussian noise and a stronger noise intensity. After a semiconductor device ages, the mobility and recombination rate of carriers change, and the shot noise also changes. The inventor has found that the overall level of Gaussian noise in the system rises, affecting the control accuracy of the motor. For example, it may reduce the accuracy of motor speed control.

[0025] All the defects existing in the above solutions are the results obtained by the inventor through practice and careful research. Therefore, the process of discovering the above problems and the solutions proposed in this disclosure by the present disclosure for the above problems should be the contributions made by the inventor to the present disclosure during the process of the present disclosure.

[0026] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0028] As Figure 1As shown, at least one disclosed embodiment provides an electric precision regulating valve control system, including: a housing 1, a valve seat 2 and a control module, as well as a driving mechanism 3, a photoelectric gate module 5 and a timing module electrically connected to the control module; the valve seat 2 is connected to the housing 1; the photoelectric gate module 5 is arranged in the housing 1; the driving mechanism 3 is connected with a piston mechanism 4, and the piston mechanism 4 is arranged in the valve seat 2; the control module is configured to control the driving mechanism 3 to drive the piston mechanism 4 to move so as to adjust the opening degree of the flow channel 23 in the valve seat 2, and when the driving mechanism 3 triggers the photoelectric gate module 5, the control module determines that the flow channel 23 is fully opened; and the control module is configured to calibrate the second signal when the second signal corresponding to the driving mechanism 3 does not match the first signal sent by the timing module, thereby realizing the calibration of the control module and avoiding inaccurate control of the driving mechanism 3 caused by an increase in noise in the control module.

[0029] In this embodiment, the timing module can but is not limited to adopting a 555 circuit.

[0030] In this embodiment, the control module sends a second signal to the driving mechanism 3 to control the motor assembly 31 in the driving mechanism 3 to work.

[0031] As Figure 2 shown, in an optional embodiment, the driving mechanism 3 includes: a motor assembly 31 and a rotating shaft screw 32; the motor assembly 31 is arranged in the housing 1; the motor assembly 31 is electrically connected to the control module, and the control module drives the motor assembly 31 to work through the second signal; the rotating shaft screw 32 is arranged in the motor assembly 31, and the motor assembly 31 drives the rotating shaft screw 32 to move; one end of the rotating shaft screw 32 is connected to the piston mechanism 4, and the other end of the rotating shaft screw 32 triggers the photoelectric gate module 5 after moving.

[0032] In this embodiment, a screw thread sleeve 33 is arranged in the motor assembly 31, the rotating shaft screw 32 is arranged in the screw thread sleeve 33, and the screw thread sleeve 33 is in threaded connection with the rotating shaft screw 32.

[0033] In this embodiment, the motor assembly 31 can drive the rotating shaft screw 32 to move so as to drive the piston mechanism 4 to move.

[0034] In an alternative embodiment, the piston mechanism 4 includes a transmission slider 41 and a diaphragm 42; the transmission slider 41 is connected to one end of the rotating shaft screw 32; a limiting cavity 11 is provided in the housing 1, and the limiting cavity 11 communicates with the valve seat 2. The transmission slider 41 is slidably disposed in the limiting cavity 11, and the transmission slider 41 passes through the limiting cavity 11 and extends into the valve seat 2 and then is connected to the diaphragm 42; the diaphragm 42 is disposed in the valve seat 2; when the rotating shaft screw 32 moves, it drives the transmission slider 41 to move, so as to drive the conical protrusion 422 on the diaphragm 42 to move.

[0035] In this embodiment, the transmission slider 41 is connected to the rotating shaft screw 32. When the rotating shaft screw 32 moves, it can drive the transmission slider 41 to move, and then drive the conical protrusion 422 on the diaphragm 42 to move.

[0036] In an alternative embodiment, a chamber 21 is formed in the valve seat 2. One side of the chamber 21 close to the housing 1 is open, and the diaphragm 42 covers the opening; a ring body 421 is provided on the diaphragm 42; an annular groove 22 is provided in the valve seat 2, and the annular groove 22 surrounds the opening of the chamber 21, and the ring body 421 is located in the annular groove 22; the flow channel 23 includes a first flow channel 231 and a second flow channel 232; one end of the first flow channel 231 communicates with the first interface 24 on the valve seat 2, and the other end communicates with the chamber 21; one end of the second flow channel 232 communicates with the second interface 25 on the valve seat 2, and the other end communicates with the chamber 21; a conical protrusion 422 is provided on the diaphragm 42, and the conical protrusion 422 extends into the end where the first flow channel 231 communicates with the chamber 21 to adjust the opening degree of the first flow channel 231 and adjust the opening degree of the flow channel 23 in the valve seat 2.

[0037] In this embodiment, the first interface 24 can be used as the liquid inlet, and the second interface 25 can be used as the liquid outlet. The liquid enters the chamber 21 through the first flow channel 231 and then flows out of the chamber 21 through the second flow channel 232.

[0038] In this embodiment, by adjusting the length of the conical protrusion 422 inserted into the first flow channel 231, the opening degree of the first flow channel 231 is adjusted. When the outer wall of the conical protrusion 422 contacts the edge of the first flow channel 231, the first flow channel 231 can be closed.

[0039] In this embodiment, when the rotating shaft screw 32 drives the conical protrusion 422 on the diaphragm 42 to move, the length of the conical protrusion 422 inserted into the first flow channel 231 is adjusted, and then the opening degree of the first flow channel 231 is adjusted. When the photoelectric gate module 5 detects the rotating shaft screw 32, it is determined at this time that the opening degree of the first flow channel 231 reaches the maximum, and it can be determined at this time that the first flow channel 231 is completely opened.

[0040] In this embodiment, an arc-shaped ring 423 is provided on the diaphragm 42. The arc-shaped ring 423 arches towards the housing 1. This arc-shaped ring 423 can serve as the reciprocating motion area of the diaphragm 42. The arc-shaped ring 423 is arranged around the connection position between the diaphragm 42 and the transmission slider 41. Similarly, the concave surface of the arc-shaped ring 423 surrounds the conical protrusion 422. The cross-section of the arc-shaped ring 423 is semi-circular. Through the arc-shaped ring 423, the conical protrusion 422 can move to adjust the length of the conical protrusion 422 inserted into the first flow channel 231.

[0041] As Figure 3 shown, in an alternative embodiment, the control module, the photoelectric gate module 5, and the timing module are all electrically connected to a power supply module. A controller is provided in the power supply module. The controller in the power supply module is configured to receive the second signal sent by the control module and the first signal sent by the timing module, and then compare the first signal with the second signal. If the difference between the two exceeds a preset comparison range, it is determined that the second signal does not match the first signal, that is, the second signal is determined to be abnormal. At this time, the controller sends a calibration instruction to the control module. The control module sends the second signal to the drive mechanism 3 to control the operation of the motor assembly 31 in the drive mechanism 3.

[0042] In this embodiment, the controller can be an embedded microcontroller or the like.

[0043] In this embodiment, the first signal is the signal sent by the timing module and serves as the clock signal of the control module. The second signal is the signal sent by the control module to control the operation of the drive mechanism 3.

[0044] In this embodiment, the timing module can accurately send the first signal on time to accurately compare and judge the second signal through the first signal.

[0045] In this embodiment, both the first signal and the second signal are electrical pulse signals.

[0046] In this embodiment, the electrical pulse signal is a signal with a certain amount of energy, which is convenient for comparing the first signal and the second signal in the comparator in the controller.

[0047] In an alternative embodiment, the control module is further configured to send a restart signal to the power supply module after receiving the calibration instruction. The power supply module restarts after receiving the restart signal, and the control module also restarts. After restarting, the control module compares the parameters after restarting with the preset inspection parameters, obtains the difference between the parameters after restarting and the inspection parameters, inputs the difference into the filtering sub-module in the control module, and obtains a new second signal.

[0048] In this embodiment, the parameter can be the electrical pulse signal generated per unit time.

[0049] In this embodiment, a new electrical pulse signal is generated after restart, which will be compared with the electrical pulse signal preset at the factory in the control module. The control module will conduct inspections during factory production, and only products that pass the inspections will leave the factory. The electrical pulse signal at the time of leaving the factory has a fixed standard.

[0050] In this embodiment, the preset inspection parameter is the electrical pulse signal set at the factory.

[0051] In this embodiment, the method for comparing the parameter after restart with the preset inspection parameter can be: on the time axis, judge the difference corresponding to the position gap and the difference corresponding to the duration between the parameter after restart and the preset inspection parameter, etc.

[0052] In this embodiment, for the difference corresponding to the position gap, the difference corresponding to the duration, etc., corresponding preset comparison ranges are set.

[0053] In this embodiment, when the control module receives a calibration instruction, the control module, the motor assembly 31, and the photoelectric gate module 5 are set to the detection mode, that is, the control module, the motor assembly 31, and the photoelectric gate module 5 are not connected to a load.

[0054] In an alternative embodiment, the control module is further configured to send a new second signal to the power module. The controller in the power module compares the new second signal with the first signal. If the difference between the two is within the preset comparison range, it is determined that the new second signal is normal. At this time, the control module sends the new second signal to the drive mechanism 3 to control the motor assembly 31 in the drive mechanism 3 to operate; If the difference between the two is outside the preset comparison range, the difference at this time is fed back to the control module. The control module controls the filtering sub-module therein to change the filtering method. After changing the filtering method, the new second signal is sent to the power module again to be compared with the first signal until the difference between the two is within the preset comparison range.

[0055] In this embodiment, when comparing the new second signal with the first signal, the difference corresponding to the position gap and the difference corresponding to the duration both need to be within the corresponding preset comparison range to determine that the new second signal is normal. If any difference is not within the corresponding preset comparison range, it is determined that the new second signal is abnormal at this time, and filtering needs to continue. At this time, the differences corresponding to all parameters are sent to the control module.

[0056] In this embodiment, every time the new second signal is abnormal, after the corresponding difference is sent to the control module, the control module will change a filtering method and re-perform filtering.

[0057] In an alternative embodiment, the filtering method includes: mean filtering, median filtering, moving average filtering, exponentially weighted moving average filtering, etc.

[0058] In an alternative embodiment, the timing module is electrically connected to the photoelectric gate module 5, and the timing module is configured to control the lamp in the photoelectric gate module 5 to be lit, and after the lamp is lit, the control module determines that the photoelectric gate module 5 is triggered.

[0059] In this embodiment, after receiving the calibration instruction, the control module sends a restart instruction to the controller in the power module. If the controller does not receive the restart instruction and uses the full-duplex communication form, the controller automatically controls the power module to restart; after the controller sends a calibration instruction to the control module, if it does not receive the restart instruction sent by the control module within a preset time interval, the controller automatically controls the power module to restart.

[0060] In an alternative embodiment, when controlling the motor assembly 31, it is also necessary to filter the real-time motor pulse control signal of the motor assembly 31 to accurately control the motor assembly 31. The control module is further configured to obtain the real-time motor pulse control signal corresponding to the motor assembly 31 when sending a new second signal to the drive mechanism 3 to control the motor assembly 31 in the drive mechanism 3 to work, so as to determine the filtering method corresponding to the real-time motor pulse control signal, that is Obtain a number of real-time motor pulse control signals within a unit time; If the number of real-time motor pulse control signals is equal to the preset standard number, the variance values corresponding to all real-time motor pulse control signals are within the preset range, and the number of real-time motor pulse control signals exceeding the preset threshold range is less than or equal to the preset number, mean filtering is used to filter the real-time motor pulse control signals; If the number of real-time motor pulse control signals is equal to the preset standard number, the variance values corresponding to all real-time motor pulse control signals are outside the preset range, and the number of real-time motor pulse control signals exceeding the preset threshold range is less than or equal to the preset number, median filtering is used to filter the real-time motor pulse control signals; If the number of real-time motor pulse control signals is less than or greater than the preset standard number, and the number of real-time motor pulse control signals exceeding the preset threshold range is less than or equal to the preset number, moving average filtering is used to filter the real-time motor pulse control signals; If the number of real-time motor pulse control signals is less than or greater than the preset standard number, and the number of real-time motor pulse control signals exceeding the preset threshold range is greater than the preset number, exponentially weighted moving average filtering is used to filter the real-time motor pulse control signals; If the number of real-time motor pulse control signals is equal to the preset standard number, and when the number of real-time motor pulse control signals exceeding the preset threshold range is greater than the preset number, exponential weighted moving average filtering is used to filter the real-time motor pulse control signals.

[0061] Specifically, when the motor assembly 31 leaves the factory, the number of motor pulse control signals of the motor assembly 31 per unit time is 10, the preset standard number is 10, the number of real-time motor pulse control signals allowed to exceed the preset threshold range is 2, the preset range is below 55.5, and the number of corresponding motor pulse control signals per unit time when the motor assembly 31 leaves the factory is 10. The corresponding values are 21, 23, 24, 21, 24, 25, 24, 24, 25, 21 respectively. The values correspond to the initially output pwm signals, that is, the duty cycles. For example, 21 corresponds to a duty cycle of 21%. After filtering, there will be an actual duty cycle output value for each real-time motor pulse control signal. At this time, the values corresponding to each real-time motor pulse control signal are 25, 23, 26, 24, 27, 25, 26, 50, 27, 28, which meet the preset standard number. Among them, the value of the real-time motor pulse control signal corresponding to 50 exceeds the preset threshold range, and other data are normal. The number of real-time motor pulse control signals exceeding the preset threshold range is less than the preset number, and the variance is 55.29, which meets the preset range. Using mean filtering to filter the real-time motor pulse control signals can effectively smooth Gaussian noise, make the data more stable, and closer to the true signal value.

[0062] The values corresponding to each real-time motor pulse control signal are 25, 23, 26, 24, 34, 25, 26, 50, 27, 28 respectively, which meet the preset standard number. Among them, the values of the real-time motor pulse control signals corresponding to 50 and 34 exceed the preset threshold range, and other data are normal. The number of real-time motor pulse control signals exceeding the preset threshold range is equal to the preset number, and the variance is 58.12, which exceeds the preset range. Using median filtering to filter the real-time motor pulse control signals can effectively remove outliers and retain the normal fluctuation trend, details and true fluctuation situation of the data.

[0063] The values corresponding to each real-time motor pulse control signal are 25, 23, 26, 53, 27, 25, 26, 21, 27 respectively, which do not meet the preset standard number. Among them, the value of the real-time motor pulse control signal corresponding to 53 exceeds the preset threshold range, and other data are normal. The number of real-time motor pulse control signals exceeding the preset threshold range is less than the preset number. Moving average filtering is used to filter the real-time motor pulse control signals to focus on the long-term trend of the data in the case of lost data packets or incomplete data.

[0064] The values corresponding to each real-time motor pulse control signal are 25, 23, 26, 53, 27, 25, 26, 31, 39 respectively, which do not meet the preset standard quantity. Among them, the values of 53, 31 and 39 corresponding to the real-time motor pulse control signal exceed the preset threshold range, and other data are normal. The number of real-time motor pulse control signals exceeding the preset threshold range is greater than the preset quantity. The exponential weighted moving average filter is used to filter the real-time motor pulse control signal to focus on the long-term trend of the data in case of lost data packets or incomplete data.

[0065] The values corresponding to each real-time motor pulse control signal are 25, 23, 26, 70, 27, 25, 26, 56, 27, 55 respectively, which meet the preset standard quantity. Among them, the values of 70, 56 and 55 corresponding to the real-time motor pulse control signal exceed the preset threshold range, and other data are normal. The number of real-time motor pulse control signals exceeding the preset threshold range is greater than the preset quantity. The exponential weighted moving average filter is used to filter the real-time motor pulse control signal, which can smooth the noise to a certain extent, highlight the long-term trend of the data, can monitor the overall change of the motor pulse signal in real time, can keep up with the change of the data faster, and can reflect the dynamic change trend of the real-time motor pulse control signal more timely, so as to improve the accuracy of the response of the filtering system, and then speed up the response of the overall system.

[0066] In this embodiment, when obtaining the real-time motor pulse control signal corresponding to the motor assembly 31, a delay sampling is set in the control module, so as to start obtaining the real-time motor pulse control signal after a certain time, such as 1 s, after the motor assembly 31 starts to work, and reduce the signal fluctuation caused when the motor assembly 31 just starts to work.

[0067] In this embodiment, in the control module, the cumulative time of the system operation is recorded starting from the start of the motor assembly 31. When the cumulative time reaches before the first threshold, the mean filter, median filter, moving average filter, and exponential weighted moving average filter are preferentially matched; when the cumulative time is between the first threshold and the second threshold, the median filter, mean filter, moving average filter, and exponential weighted moving average filter are preferentially matched; when the cumulative time reaches the second threshold, the exponential weighted moving average filter, moving average filter, median filter, and mean filter are preferentially matched.

[0068] At least one other publicly disclosed embodiment also provides a control method using the above-mentioned electric precision control valve control system, including: the control module controls the driving mechanism 3 to drive the piston mechanism 4 to move to adjust the opening degree of the flow passage 23 in the valve seat 2, and when the driving mechanism 3 triggers the photoelectric door module 5, the control module determines that the flow passage 23 is fully opened; and the control module calibrates the second signal when the second signal corresponding to the driving mechanism 3 does not match the first signal sent by the timing module.

[0069] In summary, the electric precision control valve system includes: a housing 1, a valve seat 2, and a control module, as well as a driving mechanism 3, a photoelectric gate module 5, and a timing module electrically connected to the control module; the valve seat 2 is connected to the housing 1; the photoelectric gate module 5 is disposed within the housing 1; the driving mechanism 3 is connected to a piston mechanism 4, and the piston mechanism 4 is disposed within the valve seat 2; the control module is configured to control the driving mechanism 3 to drive the piston mechanism 4 to move so as to adjust the opening degree of the flow channel 23 within the valve seat 2, and when the driving mechanism 3 triggers the photoelectric gate module 5, the control module determines that the flow channel 23 is fully opened; and the control module is configured to calibrate the second signal when the second signal corresponding to the driving mechanism 3 does not match the first signal sent by the timing module, thereby achieving calibration of the control module and avoiding inaccurate control of the driving mechanism 3 caused by an increase in noise in the control module.

[0070] In the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", and "connected" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, terms such as "first", "second", and other numerical terms used herein do not imply an order or sequence unless clearly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or section discussed above may be referred to as the second element, component, region, layer, or section.

[0072] Spatially relative terms, such as "inner", "outer", "beneath", "below", "lower", "above", "upper", etc., may be used herein for ease of description to describe the relationship of one element or feature to another element or feature as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, an element described as "beneath" or "below" another element or feature will then be oriented "above" the other element or feature. Thus, the exemplary term "below" can encompass both an orientation of above and below.

[0073] In light of the above-described ideal embodiments of the present invention, through the above description, relevant staff can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electric precision regulating valve control system, characterized in that: include: A housing (1), a valve seat (2) and a control module, as well as a drive mechanism (3), a photoelectric gate module (5) and a timing module electrically connected to the control module; The valve seat (2) is connected to the housing (1); The photoelectric gate module (5) is arranged in the housing (1); The driving mechanism (3) is connected to a piston mechanism (4), and the piston mechanism (4) is arranged in the valve seat (2); The control module is configured to control the drive mechanism (3) to drive the piston mechanism (4) to move so as to adjust the opening of the flow channel (23) in the valve seat (2), and when the drive mechanism (3) triggers the photoelectric gate module (5), the control module determines that the flow channel (23) is fully open; and The control module is configured to calibrate the second signal when the second signal corresponding to the driving mechanism (3) does not match the first signal sent by the timing module.

2. The electric precision regulating valve control system according to claim 1, characterized in that: The driving mechanism (3) comprises: a motor assembly (31) and a rotating shaft screw (32); The motor assembly (31) is arranged in the housing (1); The motor component (31) is electrically connected to the control module, and the control module drives the motor component (31) to operate through a second signal; The rotating shaft screw rod (32) is inserted into the motor assembly (31), and the motor assembly (31) drives the rotating shaft screw rod (32) to move; One end of the rotating shaft screw (32) is connected to the piston mechanism (4), and the other end of the rotating shaft screw (32) triggers the photoelectric gate module (5) after moving.

3. The electric precision regulating valve control system according to claim 2, characterized in that: The piston mechanism (4) comprises: a transmission slider (41) and a diaphragm (42); The transmission slider (41) is connected to one end of the rotating shaft screw (32); A limiting cavity (11) is provided in the housing (1), the limiting cavity (11) is communicated with the valve seat (2), the transmission slider (41) is slidably provided in the limiting cavity (11), and the transmission slider (41) passes through the limiting cavity (11), extends into the valve seat (2), and is connected to the diaphragm (42); The diaphragm (42) is arranged in the valve seat (2); When the rotating shaft screw (32) moves, the transmission slider (41) is driven to move, thereby driving the conical protrusion (422) on the diaphragm (42) to move.

4. The electric precision regulating valve control system according to claim 3, characterized in that: A chamber (21) is provided in the valve seat (2), and a side of the chamber (21) close to the housing (1) is open, and the diaphragm (42) is covered on the open side; The diaphragm (42) is provided with a ring body (421); An annular groove (22) is provided in the valve seat (2), the annular groove (22) is openly arranged around the chamber (21), and the ring body (421) is located in the annular groove (22); The flow channel (23) comprises: a first flow channel (231) and a second flow channel (232); One end of the first flow channel (231) is in communication with the first interface (24) on the valve seat (2), and the other end is in communication with the chamber (21); One end of the second flow channel (232) is in communication with the second interface (25) on the valve seat (2), and the other end is in communication with the chamber (21); The diaphragm (42) is provided with a conical protrusion (422), and the conical protrusion (422) extends into one end of the first flow channel (231) that is connected to the chamber (21) to adjust the opening of the first flow channel (231) and adjust the opening of the flow channel (23) in the valve seat (2).

5. The electric precision regulating valve control system according to claim 1, characterized in that: The control module, the photoelectric gate module (5) and the timing module are all electrically connected to a power supply module, and the power supply module is provided with a controller; The controller in the power module is configured to receive the second signal sent by the control module and the first signal sent by the timing module, and then compare the first signal with the second signal. If the difference between the two exceeds a preset comparison range, it is determined that the second signal does not match the first signal, that is, the second signal is determined to be abnormal. At this time, the controller sends a calibration instruction to the control module; The control module sends a second signal to the drive mechanism (3) to control the operation of the motor component (31) in the drive mechanism (3); The first signal is a signal sent by the timing module and is used as a clock signal of the control module. The second signal is a signal sent by the control module and is used to control the operation of the driving mechanism (3).

6. The electric precision regulating valve control system according to claim 5, characterized in that: The control module is also configured to send a restart signal to the power module after receiving the calibration instruction, and the power module restarts after receiving the restart signal, and the control module restarts. After restarting, the control module compares the restart parameters with the preset inspection parameters, obtains the difference between the restart parameters and the inspection parameters, inputs the difference into the filtering submodule in the control module, and obtains a new second signal.

7. The electric precision regulating valve control system according to claim 6, characterized in that: The control module is further configured to send a new second signal to the power module, and a controller in the power module compares the new second signal with the first signal. If the difference between the two is within a preset comparison range, the new second signal is judged to be normal. At this time, the control module sends the new second signal to the drive mechanism (3) to control the motor component (31) in the drive mechanism (3) to operate; If the difference between the two is outside the preset comparison range, the difference at this time is fed back to the control module, and the control module controls the filtering submodule therein to change the filtering method. After the filtering method is changed, the new second signal is sent to the power module again for comparison with the first signal until the difference between the two is within the preset comparison range; The filtering methods include: mean filtering, median filtering, moving average filtering, and exponentially weighted moving average filtering.

8. The electric precision regulating valve control system according to claim 7, characterized in that: The control module is further configured to obtain a real-time motor pulse control signal corresponding to the motor component (31) when sending a new second signal to the drive mechanism (3) to control the motor component (31) in the drive mechanism (3) to work, so as to determine a filtering method corresponding to the real-time motor pulse control signal, namely Obtain several real-time motor pulse control signals within a unit time; If the number of real-time motor pulse control signals is equal to the preset standard number, the variance values ​​corresponding to all real-time motor pulse control signals are within the preset range, and the number of real-time motor pulse control signals exceeding the preset threshold range is less than or equal to the preset number, the real-time motor pulse control signals are filtered using mean filtering; If the number of real-time motor pulse control signals is equal to the preset standard number, the variance values ​​corresponding to all real-time motor pulse control signals are outside the preset range, and the number of real-time motor pulse control signals exceeding the preset threshold range is less than or equal to the preset number, the real-time motor pulse control signals are filtered using median filtering; If the number of real-time motor pulse control signals is less than or greater than a preset standard number, and the number of real-time motor pulse control signals exceeding a preset threshold range is less than or equal to a preset number, a moving average filter is used to filter the real-time motor pulse control signals; If the number of real-time motor pulse control signals is less than or greater than a preset standard number, and the number of real-time motor pulse control signals exceeding a preset threshold range is greater than a preset number, an exponentially weighted moving average filter is used to filter the real-time motor pulse control signals; If the number of real-time motor pulse control signals is equal to the preset standard number, and the number of real-time motor pulse control signals exceeding the preset threshold range is greater than the preset number, the real-time motor pulse control signals are filtered using an exponentially weighted moving average filter.

9. The electric precision regulating valve control system according to claim 1, characterized in that: The timing module is electrically connected to the photoelectric gate module (5), and the timing module is configured to control the light in the photoelectric gate module (5) to light up, and after the light is lit up, the control module determines that the photoelectric gate module (5) is triggered.

10. A control method using the electric precision regulating valve control system as claimed in claim 1, characterized in that: include: The control module controls the driving mechanism (3) to drive the piston mechanism (4) to move so as to adjust the opening of the flow channel (23) in the valve seat (2), and when the driving mechanism (3) triggers the photoelectric gate module (5), the control module determines that the flow channel (23) is fully opened; and The control module calibrates the second signal when the second signal corresponding to the driving mechanism (3) does not match the first signal sent by the timing module.

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