Electric Precision Control Valve System and Its Control Method

Abstract

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 its control method. The electric precision regulating valve control system includes: a housing, a valve seat, and a control module, as well as a driving mechanism, a photoelectric door module, and a timing module electrically connected to the control module; the valve seat is connected to the housing; the photoelectric door module is arranged inside the housing; the driving mechanism is connected with a piston mechanism, and the piston mechanism is arranged inside 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 inside the valve seat, and when the driving mechanism triggers the photoelectric door 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 an increase in noise in the control module.

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 usage 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, resulting in 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, it is not considered that the above description constitutes information on 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:

[0007] 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;

[0008] The valve seat is connected to the housing;

[0009] The photoelectric gate module is arranged in the housing;

[0010] The driving mechanism is connected with a piston mechanism, and the piston mechanism is arranged in the valve seat;

[0011] 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

[0012] 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.

[0013] In an optional embodiment, the driving mechanism includes: a motor assembly and a rotating shaft screw;

[0014] The motor assembly is arranged in the housing;

[0015] The motor assembly is electrically connected to the control module, and the control module drives the motor assembly to operate through a second signal;

[0016] The rotating shaft screw rod is arranged in the motor assembly, and the motor assembly drives the rotating shaft screw rod to move;

[0017] 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.

[0018] In an alternative embodiment, the piston mechanism includes: a transmission slider and a diaphragm;

[0019] The transmission slider is connected to one end of the rotating shaft screw rod;

[0020] 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;

[0021] The diaphragm is arranged in the valve seat;

[0022] 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.

[0023] In an alternative embodiment, a chamber is formed in the valve seat, one side of the chamber close to the housing is open, and the diaphragm covers the opening;

[0024] A ring body is arranged on the diaphragm;

[0025] 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;

[0026] The flow channel includes: a first flow channel and a second flow channel;

[0027] 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;

[0028] 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;

[0029] 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, so as to adjust the opening degree of the first flow channel and adjust the opening degree of the flow channel in the valve seat.

[0030] 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;

[0031] 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 the preset comparison range, it is determined that the second signal does not match the first signal, that is, the second signal is abnormal. At this time, the controller sends a calibration instruction to the control module;

[0032] The control module sends the second signal to the driving mechanism to control the operation of the motor assembly in the driving mechanism;

[0033] 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.

[0034] 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 the restart, the control module compares the parameters after the restart with the preset inspection parameters, obtains the difference between the parameters after the restart and the inspection parameters, inputs the difference into the filtering sub-module in the control module, and obtains a new second signal.

[0035] In an alternative embodiment, the control module is further configured to send the new second signal to the power supply module. The controller in the power supply 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 driving mechanism to control the operation of the motor assembly in the driving mechanism;

[0036] 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 supply module again to be compared with the first signal until the difference between the two is within the preset comparison range;

[0037] The filtering methods include: mean filtering, median filtering, moving average filtering, and exponentially weighted moving average filtering.

[0038] In an alternative embodiment, when the control module sends the new second signal to the driving mechanism to control the operation of the motor assembly in the driving mechanism, it obtains 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

[0039] Obtain a number of real-time motor pulse control signals within a unit time;

[0040] 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;

[0041] 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;

[0042] 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;

[0043] 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;

[0044] 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, exponentially weighted moving average filtering is used to filter the real-time motor pulse control signals.

[0045] In an alternative embodiment, the timing module is electrically connected to the photoelectric door module, and the timing module is configured to control the lamp in the photoelectric door module to be lit, and after the lamp is lit, the control module determines that the photoelectric door module is triggered.

[0046] In a second aspect, the embodiments of the present disclosure further provide a control method using the above electric precision regulating valve control system, including:

[0047] 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 door module, the control module determines that the flow channel is fully opened; and

[0048] 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.

[0049] The beneficial effects of the present invention are as follows. 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 arranged inside the housing; the driving mechanism is connected to a piston mechanism, and the piston mechanism is arranged inside 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 inside 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 an increase in noise in the control module.

[0050] 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 realized and obtained by the structure specifically pointed out in the description and the drawings.

[0051] 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 detailed description is as follows. Description of the Drawings

[0052] 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 use in the description of the specific embodiments or the prior art. Obviously, the following drawings 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.

[0053] Figure 1 Structural schematic diagram of an electric precision regulating valve control system provided by an embodiment of the present disclosure;

[0054] Figure 2 Cross-sectional view of an electric precision regulating valve control system provided by an embodiment of the present disclosure;

[0055] Figure 3 Principle block diagram of an electric precision regulating valve control system provided by an embodiment of the present disclosure.

[0056] In the figure:

[0057] 1 housing, 11 limiting cavity;

[0058] 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;

[0059] 3 Driving mechanism, 31 Motor assembly, 32 Rotating shaft screw rod, 33 Screw rod tooth sleeve;

[0060] 4 Piston mechanism, 41 Transmission slider, 42 Diaphragm, 421 Ring body, 422 Conical protrusion, 423 Arc ring;

[0061] 5 Photoelectric gate module. Specific embodiments

[0062] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, 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.

[0063] 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 features, structures, or characteristics after the phrase can be included in at least one embodiment of the present disclosure. Therefore, a specific feature, structure, or characteristic can 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 construed as being 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 specific manner.

[0064] In 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 found that the overall level of Gaussian noise in the system rises, affecting the motor control accuracy. For example, it may reduce the accuracy of motor speed control.

[0065] Regarding the defects existing in the above solutions, they are all 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 all be the contributions made by the inventor to the present disclosure during the process of the present disclosure.

[0066] It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

[0067] The following will, with reference to the accompanying drawings, elaborate on some embodiments of the present invention. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.

[0068] As Figure 1 shown, at least one disclosed embodiment provides an electric precision control valve 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 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 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.

[0069] In this embodiment, the timing module may but is not limited to using a 555 circuit.

[0070] In this embodiment, the control module sends a second signal to the driving mechanism 3 to control the operation of the motor assembly 31 in the driving mechanism 3.

[0071] As Figure 2 shown, in an alternative embodiment, the driving mechanism 3 includes: a motor assembly 31 and a rotating shaft screw 32; the motor assembly 31 is disposed within the housing 1; the motor assembly 31 is electrically connected to the control module, and the control module drives the motor assembly 31 to operate through the second signal; the rotating shaft screw 32 is disposed through 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.

[0072] In this embodiment, a screw thread sleeve 33 is disposed through the motor assembly 31, the rotating shaft screw 32 is disposed within the screw thread sleeve 33, and the screw thread sleeve 33 is threadedly connected to the rotating shaft screw 32.

[0073] 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.

[0074] 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 rotary 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 rotary 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.

[0075] In this embodiment, the transmission slider 41 is connected to the rotary shaft screw 32. When the rotary shaft screw 32 moves, it can drive the transmission slider 41 to move, and further drive the conical protrusion 422 on the diaphragm 42 to move.

[0076] 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. 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 one end of the first flow channel 231 communicating 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.

[0077] 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.

[0078] 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.

[0079] In this embodiment, when the rotating shaft screw rod 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, thereby adjusting the opening degree of the first flow channel 231. When the photoelectric gate module 5 detects the rotating shaft screw rod 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 fully opened.

[0080] In this embodiment, an arc-shaped ring 423 is provided on the diaphragm 42. The arc-shaped ring 423 arches towards the housing 1. The arc-shaped ring 423 can be used 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.

[0081] As Figure 3 shown, in an optional embodiment, the control module, the photoelectric gate module 5, and the timing module are all electrically connected to a power supply module, and 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 the 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 drive mechanism 3 to control the operation of the motor assembly 31 in the drive mechanism 3.

[0082] In this embodiment, the controller can be an embedded microcontroller or the like.

[0083] In this embodiment, the first signal is a signal sent by the timing module and serves as the clock signal of the control module, and the second signal is a signal sent by the control module to control the operation of the drive mechanism 3.

[0084] 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.

[0085] In this embodiment, both the first signal and the second signal are electrical pulse signals.

[0086] 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.

[0087] 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 also restarts. After the restart, the control module compares the post-restart parameters with preset inspection parameters, obtains the difference between the post-restart parameters and the inspection parameters, inputs the difference into the filtering sub-module in the control module, and obtains a new second signal.

[0088] In this embodiment, the parameter may be an electrical pulse signal generated per unit time.

[0089] In this embodiment, a new electrical pulse signal is generated after the restart, which is compared with the electrical pulse signal preset at the factory in the control module. The control module conducts inspections during factory production, and only products that pass the inspections are shipped out. The electrical pulse signal at the time of factory shipment has a fixed standard.

[0090] In this embodiment, the preset inspection parameter is the electrical pulse signal set at the factory.

[0091] In this embodiment, the method for comparing the post-restart parameters with the preset inspection parameters may be: on the time axis, judging the difference corresponding to the position gap and the difference corresponding to the duration between the post-restart parameters and the preset inspection parameters, etc.

[0092] In this embodiment, for the difference corresponding to the position gap, the difference corresponding to the duration, etc., corresponding preset comparison ranges are set.

[0093] 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.

[0094] 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 3 to control the motor assembly 31 in the drive mechanism 3 to operate;

[0095] 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.

[0096] 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 need to be within the corresponding preset comparison ranges to determine that the new second signal is normal. If any of the differences 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 be continued. At this time, the differences corresponding to all parameters are sent to the control module.

[0097] 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 replace a filtering method and perform filtering again.

[0098] In an alternative embodiment, the filtering methods include: mean filtering, median filtering, moving average filtering, exponentially weighted moving average filtering, etc.

[0099] 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.

[0100] In this embodiment, after receiving the calibration instruction, the control module will send 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 will automatically control the power module to restart; after the controller sends the calibration instruction to the control module, if it does not receive the restart instruction sent by the control module within the preset time interval, the controller will automatically control the power module to restart.

[0101] 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

[0102] Obtain a number of real-time motor pulse control signals within a unit time;

[0103] 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;

[0104] 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;

[0105] 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;

[0106] 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;

[0107] 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, exponentially weighted moving average filtering is used to filter the real-time motor pulse control signals.

[0108] 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, the number of motor pulse control signals corresponding to the motor assembly 31 per unit time when it leaves the factory is 10, and the corresponding values are 21, 23, 24, 21, 24, 25, 24, 24, 25, 21. 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 these values. 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 the 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. Mean filtering is used to filter the real-time motor pulse control signals, which can effectively smooth Gaussian noise and make the data more stable and closer to the true signal value.

[0109] The values corresponding to each real-time motor pulse control signal are 25, 23, 26, 24, 34, 25, 26, 50, 27, 28 respectively, meeting the preset standard quantity. Among them, the values of 50 and 34 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 equal to the preset quantity, and the variance is 58.12, exceeding the preset range. Median filtering is used to filter the real-time motor pulse control signal, which can effectively remove outliers and retain the normal fluctuation trend, details and real fluctuation of the data.

[0110] The values corresponding to each real-time motor pulse control signal are 25, 23, 26, 53, 27, 25, 26, 21, 27 respectively, not meeting the preset standard quantity. Among them, the value of 53 corresponding to the real-time motor pulse control signal 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 quantity. Moving average filtering 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.

[0111] The values corresponding to each real-time motor pulse control signal are 25, 23, 26, 53, 27, 25, 26, 31, 39 respectively, not meeting 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. Exponentially weighted moving average filtering 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.

[0112] The values corresponding to each real-time motor pulse control signal are 25, 23, 26, 70, 27, 25, 26, 56, 27, 55 respectively, meeting 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. Exponentially weighted moving average filtering 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, monitor the overall change of the motor pulse signal in real time, keep up with the change of the data faster, and 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.

[0113] 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 after the motor assembly 31 starts working, for example, after 1 s, to reduce the signal fluctuation caused when the motor assembly 31 just starts working.

[0114] In this embodiment, in the control module, the time-weighted starts from when the motor assembly 31 starts to work, records the cumulative time of the system working, and preferentially matches mean filtering, median filtering, moving average filtering, and exponentially weighted moving average filtering before the cumulative time reaches the first threshold; when the cumulative time is between the first threshold and the second threshold, preferentially matches median filtering, mean filtering, moving average filtering, and exponentially weighted moving average filtering; when the cumulative time reaches the second threshold, preferentially matches exponentially weighted moving average filtering, moving average filtering, median filtering, and mean filtering.

[0115] At least one other publicly disclosed embodiment also provides a control method using the above-mentioned electric precision regulating valve control system, including: the control module controls 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 door 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.

[0116] In summary, the electric precision regulating valve control system includes: a housing 1, a valve seat 2 and a control module, as well as a driving mechanism 3, a photoelectric door module 5 and a timing module electrically connected to the control module; the valve seat 2 is connected to the housing 1; the photoelectric door 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 door 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 increased noise in the control module.

[0117] In the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" 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.

[0118] 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. It 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. Therefore, it should not be construed as a limitation to the present invention. In addition, terms such as "first", "second" and other numerical terms used herein do not imply an order or sequence unless explicitly 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.

[0119] Spatially relative terms, such as "inner", "outer", "below", "beneath", "lower", "above", "upper", etc., may be used herein to facilitate describing one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. In addition to the orientation depicted in the figures, spatially relative terms may also be intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is turned over, an element described as "below" or "beneath" another element or feature would then be oriented "above" the other element or feature. Thus, the exemplary term "below" can encompass both an orientation of above and below.

[0120] Based on the above inspiration from the ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this 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 control valve system, characterized in that, Comprising: 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 inside the housing (1); The driving mechanism (3) is connected with a piston mechanism (4), and the piston mechanism (4) is arranged inside 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 a flow channel (23) inside 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 a second signal when the second signal corresponding to the driving mechanism (3) does not match a first signal sent by the timing module; The driving mechanism (3) includes: a motor assembly (31) and a rotating shaft lead screw (32); The motor assembly (31) is arranged inside 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 a second signal; The rotating shaft lead screw (32) is arranged through the motor assembly (31), and the motor assembly (31) drives the rotating shaft lead screw (32) to move; One end of the rotating shaft lead screw (32) is connected to the piston mechanism (4), and the other end of the rotating shaft lead screw (32) triggers the photoelectric gate module (5) after moving; 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 lead screw (32); A limiting cavity (11) is arranged inside the housing (1), the limiting cavity (11) communicates with the valve seat (2), the transmission slider (41) is slidably arranged inside the limiting cavity (11), and the transmission slider (41) extends into the valve seat (2) through the limiting cavity (11) and is connected to the diaphragm (42); The diaphragm (42) is arranged inside the valve seat (2); When the rotating shaft lead screw (32) moves, it drives the transmission slider (41) to move so as to drive a conical protrusion (422) on the diaphragm (42) to move; A chamber (21) is formed inside the valve seat (2), one side of the chamber (21) close to the housing (1) is open, and the diaphragm (42) covers the opening; The flow channel (23) includes: a first flow channel (231) and a second flow channel (232); A conical protrusion (422) is arranged on the diaphragm (42), and the conical protrusion (422) extends into one 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) inside the valve seat (2).

2. The electric precision control valve control system according to claim 1, wherein: A ring body (421) is arranged on the diaphragm (42); An annular groove (22) is provided in the valve seat (2). The annular groove (22) is arranged around the opening of the chamber (21), and the ring body (421) is located in the annular groove (22). 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).

3. The electric precision regulating valve control system according to claim 1, wherein: The control module, the photoelectric gate module (5) and the timing module are all electrically connected to a power supply module, and 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 the 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 (3) to control the operation of the motor assembly (31) in the driving mechanism (3); The first signal is a signal sent by the timing module and serves as the clock signal of the control module. The second signal is a signal sent by the control module to control the operation of the driving mechanism (3).

4. The electric precision regulating valve control system according to claim 3, wherein: 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 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.

5. The electric precision regulating valve control system according to claim 4, wherein: The control module is further configured to send the new second signal to the power supply module. The controller in the power supply 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 driving mechanism (3) to control the operation of the motor assembly (31) in the driving mechanism (3); 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 supply 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.

6. The electric precision regulating valve control system according to claim 5, wherein: The control module is further configured to obtain a 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 operation of the motor assembly (31) in the drive mechanism (3), so as to determine the filtering method corresponding to the real-time motor pulse control signal, that is obtain a plurality of real-time motor pulse control signals within a unit time; when the number of real-time motor pulse control signals is equal to a preset standard number, the variance values corresponding to all real-time motor pulse control signals are within a preset range, and the number of real-time motor pulse control signals exceeding the preset threshold range is less than or equal to a preset number, use mean filtering to filter the real-time motor pulse control signals; when the number of real-time motor pulse control signals is equal to a 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 a preset number, use median filtering to filter the real-time motor pulse control signals; when 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 a preset number, use moving average filtering to filter the real-time motor pulse control signals; when 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 a preset number, use exponentially weighted moving average filtering to filter the real-time motor pulse control signals; when 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, use exponentially weighted moving average filtering to filter the real-time motor pulse control signals.

7. The electric precision regulating valve control system according to claim 1, wherein: 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.

8. A control method using the electric precision regulating valve control system as described in claim 1, characterized in that, including: The control module controls the drive 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 drive 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 drive mechanism (3) does not match the first signal sent by the timing module.

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