CN114789984B - Automatic filling control method, storage medium and system - Google Patents
Automatic filling control method, storage medium and systemInfo
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- CN114789984B CN114789984B CN202110105771.7A CN202110105771A CN114789984B CN 114789984 B CN114789984 B CN 114789984B CN 202110105771 A CN202110105771 A CN 202110105771A CN 114789984 B CN114789984 B CN 114789984B
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000003860 storage Methods 0.000 title claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 230000011664 signaling Effects 0.000 claims abstract description 4
- 238000012937 correction Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 14
- 238000012549 training Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000005303 weighing Methods 0.000 abstract description 15
- 239000000463 material Substances 0.000 description 11
- 238000005429 filling process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 206010049040 Weight fluctuation Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013135 deep learning Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 238000012067 mathematical method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003062 neural network model Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Abstract
The application provides an automatic filling control method, a storage medium and a system, wherein the method comprises the following steps: responding to a filling start signal, and controlling a filling valve to be opened according to a first opening value; acquiring an analog signal for representing the weight of the object to be detected in real time, filtering and denoising the analog signal, and then amplifying to obtain a weight value of the object to be detected; if the weight value of the object to be detected reaches a large/small flow control switching threshold value, reducing the opening of the filling valve in real time along with the increase of the weight value of the object to be detected; and if the weight value of the object to be detected reaches the valve closing threshold, controlling the filling valve to be closed. Compared with a digital weighing sensor, the cost of the weight sensor in the form of an analog signal is greatly reduced, a pulse driving module is omitted, and the structure of the system is further simplified.
Description
Technical Field
The present invention relates to the field of automatic filling control, and in particular, to an automatic filling control method, a storage medium, and a system.
Background
With technological progress, the weighing and filling equipment is developing towards intellectualization and automation. The current weighing and filling device weighs a container through a digital weighing unit, and then a pulse driving module is adopted to output pulse signals to an electromagnetic valve, so that the electromagnetic valve is controlled to act after being opened, the opening degree of a filling valve can be controlled, the adjustment and control of filling flow are realized, and then filling is completed.
In the above scheme, the adopted digital weighing unit has high price, and the pulse driver needs to be configured, so that the whole system has high cost and complex structure, and therefore, further improvement is still available.
Disclosure of Invention
The embodiment of the invention aims to provide an automatic filling control method, a storage medium and a system, which are used for solving the technical problems of complex structure and high cost of a weighing and filling scheme in the prior art.
To this end, some embodiments of the present invention provide an automatic filling control method, including the following steps:
Responding to a filling start signal, and controlling a filling valve to be opened according to a first opening value;
Acquiring an analog signal for representing the weight of the object to be detected in real time, filtering and denoising the analog signal, and then amplifying to obtain a weight value of the object to be detected;
If the weight value of the object to be detected reaches a large/small flow control switching threshold value, reducing the opening of the filling valve in real time along with the increase of the weight value of the object to be detected;
and if the weight value of the object to be detected reaches the valve closing threshold, controlling the filling valve to be closed.
According to the automatic filling control method in some embodiments of the present invention, an analog signal for representing the weight of an object to be measured is collected in real time, and the analog signal is filtered and noise reduced and then amplified to obtain a weight value of the object to be measured, where:
the filtering and noise reduction processing process comprises the following steps: dual filtering of TD filtering and median filtering
The automatic filling control method in some embodiments of the present invention further comprises the following steps:
Acquiring a weight value of an object to be measured in a stable state as a filling weight value;
and if the difference value between the filling weight value and the filling target value exceeds the allowable error range, correcting the valve closing threshold value.
According to the automatic filling control method in some embodiments of the present invention, if the difference between the filling weight value and the filling target value exceeds the allowable error range, the step of correcting the valve closing threshold value includes:
Training a learning model by using a training sample, wherein the training sample takes a difference value between a filling weight value sample and a filling target value sample as input, takes a valve closing threshold correction value sample as output, and takes the learning model after training as a correction model;
Inputting the difference value between the filling weight value and the filling target value into the correction model to obtain a correction value of a valve closing threshold;
and adding the correction value to the valve closing threshold value to obtain a corrected valve closing threshold value.
In some embodiments of the present invention, in the automatic filling control method, if the difference between the filling weight value and the filling target value exceeds the allowable error range, the step of correcting the valve closing threshold value further includes:
and if the difference value between the large/small flow control switching threshold and the corrected valve closing threshold is smaller than a preset adjustment range, correcting the large/small flow control switching threshold.
According to the automatic filling control method in some embodiments of the present invention, if the weight value of the object to be measured reaches a switching threshold value of large/small flow control, the step of reducing the opening of the filling valve in real time along with the increase of the weight value of the object to be measured includes:
processing the corresponding relation between the weight value of the object to be measured and time according to a linear fitting method to obtain a filling flow value at any moment;
Determining a real-time filling valve opening value according to the filling flow value;
and controlling the opening value of the filling valve to keep synchronous with the opening value of the real-time filling valve.
In some embodiments of the present invention, a storage medium is further provided, where a program instruction is stored in the storage medium, and after a computer reads the program instruction, the automatic filling control method described in any one of the above is executed.
The invention also provides an automatic filling control system, which comprises a filling controller;
The filling controller comprises at least one processor and at least one memory, wherein program instructions are stored in at least one memory, and the automatic filling control method is carried out after the program instructions are read by at least one processor.
The automatic filling control system in some embodiments of the present invention further comprises:
The analog weight sensor is arranged below the container and used for acquiring an analog signal representing the weight of the object to be detected in real time and sending the analog signal to the processor.
The automatic filling control system in some embodiments of the invention further comprises a solenoid valve and a cylinder:
the filling controller, the electromagnetic valve and the air cylinder are integrated into an automatic filling control unit;
The electromagnetic valve is connected between the filling controller and the air cylinder, and the execution output end of the air cylinder is connected with the filling valve; and the filling controller controls the cylinder to act after passing through the electromagnetic valve so as to adjust the opening value of the filling valve.
Compared with the prior art, the technical scheme provided by the invention has at least the following beneficial effects:
(1) According to the scheme, the analog sensor is used for acquiring the weight value of the object to be detected in the form of an analog signal, filtering and amplifying the weight value of the object to be detected, so that the weight value of the object to be detected can meet the conditions of identification and analysis, and the opening value of the filling valve is adjusted in real time according to the weight value of the object to be detected in the form of the analog signal. Compared with a digital weighing sensor, the cost of the weight sensor in the form of an analog signal is greatly reduced, and a pulse driving module is omitted, so that the structure of the system is further simplified.
(2) According to the scheme, the structure of the weighing and filling system is further optimized, and the analog weighing and filling sensor is separated from the weighing and filling controller, so that the weighing and filling system has higher flexibility in installation and use.
(3) According to the scheme, the two-stage filtering optimization treatment is carried out on the analog signals, so that the influence of the weight fluctuation interference in the liquid filling process can be effectively reduced, and the accuracy in the filling control process is improved.
(4) According to the scheme, when the flow is switched to the small flow control process, the flow is obtained in a linear fitting mode, namely, the slope of the linear after the weight information is fitted is converted into the flow through a unit, and the flow value is obtained more reliably according to more weight data.
(5) According to the scheme, in the continuous automatic filling process, a machine learning method is adopted to automatically optimize control and related parameters, so that the filling result is ensured to be consistent with the actual requirement.
Drawings
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
FIG. 1 is a flow chart of an automatic filling control method according to an embodiment of the invention;
FIG. 2 is a flow chart of an automatic filling control method according to another embodiment of the present invention;
FIG. 3a is a flow chart of an automatic filling control method according to another embodiment of the present invention;
FIG. 3b is a schematic diagram illustrating the division of the filling control stages according to an embodiment of the present invention;
FIG. 4 is a flowchart of a method for filtering an analog weight signal according to one embodiment of the present invention;
FIG. 5 is a flow chart of a ready-to-fill phase according to one embodiment of the present invention;
FIG. 6 is a flow chart of a method for performing a filling operation with a maximum opening value for a filling valve according to one embodiment of the present invention;
FIG. 7 is a flow chart of a method for implementing a low flow filling operation according to one embodiment of the present invention;
FIG. 8 is a flow chart illustrating the correction of the valve closing threshold according to one embodiment of the present invention;
FIG. 9 is a block diagram showing the internal structure of a filling controller according to an embodiment of the present invention;
Fig. 10 is a block diagram illustrating an automatic filling control system according to an embodiment of the present invention.
Detailed Description
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present invention, and are not to indicate or imply that the apparatus or component to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Some embodiments of the present invention provide an automatic filling control method, including the following steps:
s101: and responding to the filling start signal, and controlling the filling valve to be opened according to the first opening value. The first opening value may be a maximum opening value, the purpose of which is to achieve the filling operation as fast as possible. And the filling start signal can be automatically triggered by detecting that the weight of the object to be detected is consistent with the weight of the empty bottle container.
S102: and acquiring an analog signal for representing the weight of the object to be detected in real time, filtering and denoising the analog signal, and then amplifying to obtain the weight value of the object to be detected. In this process, the test object weight may be an empty bottle container, or the test object weight=the container weight+the material weight when the inside of the container has been filled with a part of the material. In addition, in order to ensure that the analog signal can be correctly identified and analyzed, the analog signal is filtered, noise reduced and amplified before analysis, so that noise in the signal is eliminated and the analog signal can be accurately identified.
S103: if the weight value of the object to be detected reaches a large/small flow control switching threshold value, reducing the opening of the filling valve in real time along with the increase of the weight value of the object to be detected; the large/small flow control switching threshold may be stored in the system in a predetermined manner, and if the sum of the weight of the container and the weight of the internal material is a maximum weight value when the container is filled, the large/small flow control switching threshold may be about 90% of the maximum weight value. That is, when the material value inside the container has reached a certain amount, in order to avoid the material leaking out due to the excessively high filling speed, the filling valve opening value may be reduced at this time, the filling speed is reduced, and the filling valve opening value is gradually reduced in real time as the amount of the material inside the container is increasing.
S104: and if the weight value of the object to be detected reaches the valve closing threshold, controlling the filling valve to be closed. The valve closing threshold may be a maximum weight value obtained by adding the weight of the container and the weight of the internal material when the container is full.
According to the scheme, the weight value of the to-be-detected object in the form of an analog signal can be obtained through the analog sensor, filtering and amplifying treatment is carried out on the weight value of the to-be-detected object, so that the weight value of the to-be-detected object can meet the conditions of being identified and analyzed, and the opening value of the filling valve is adjusted in real time according to the weight value of the to-be-detected object in the form of the analog signal. The method comprises the steps of obtaining an object weight value to be detected in an analog signal form through an analog sensor, filtering and amplifying the object weight value to be detected, enabling the object weight value to meet the conditions of being identified and analyzed, and adjusting the opening value of the filling valve in real time according to the object weight value to be detected in the analog signal form. Compared with a digital weighing sensor, the cost of the weight sensor in the form of an analog signal is greatly reduced, and a pulse driving module is omitted, so that the structure of the system is further simplified.
Preferably, the step S103 may be implemented as follows: processing the corresponding relation between the weight value of the object to be measured and time according to a linear fitting method to obtain a filling flow value at any moment;
Determining a real-time filling valve opening value according to the filling flow value; controlling the opening value of the filling valve to keep synchronous with the opening value of the real-time filling valve
Wherein, a plurality of weight values of the object to be measured are continuously detected in a continuous time period, and a series of weight values of the object to be measured are substituted into a formula by a mathematical method to obtain a continuous function (i.e. curve). And performing linear fitting operation on the weight information so as to acquire slope information of the linear. The slope of the line becomes the flow after unit conversion. The filling process can be controlled more accurately when the opening degree of the filling valve is consistent with the change trend of the liquid flow. Therefore, the slope value of the fitting straight line can be directly used for corresponding to the opening degree of the filling valve, and the filling precision can be ensured while the control method is simplified.
Preferably, as shown in fig. 2, the automatic filling method in some embodiments may further include the following steps:
S105: the weight value of the object to be measured in a stable state is obtained as the filling weight value, the analog weighing device is adopted for weighing operation, fluctuation is easy to generate, and a certain impact force is generated on the container due to a certain acceleration in the falling process of the material in the filling process, so that the detection result of the analog weighing device fluctuates after the filling valve is closed, and the weight value of the object to be measured is determined after the weight value of the object to be measured is stable in the step.
S106: and if the difference value between the filling weight value and the filling target value exceeds the allowable error range, correcting the valve closing threshold value. For example, the difference between the filling weight value and the filling target value can be directly used as a correction value to compensate the valve closing threshold
As a preferred solution, this step can also be implemented as follows: training a learning model by using a training sample, wherein the training sample takes a difference value between a filling weight value sample and a filling target value sample as input, takes a valve closing threshold correction value sample as output, and takes the learning model after training as a correction model; inputting the difference value between the filling weight value and the filling target value into the correction model to obtain a correction value of a valve closing threshold; and adding the correction value to the valve closing threshold value to obtain a corrected valve closing threshold value. The learning model may employ a neural network model, a deep learning algorithm, or the like. In the practical application process, the valve closing threshold is set as a filling target value, and errors still possibly exist after final filling is finished, so that a learning algorithm is adopted to continuously train a learning model in the step, and the accuracy of the finally obtained filling product weight is improved.
In addition, step S106 may further include: and if the difference value between the large/small flow control switching threshold and the corrected valve closing threshold is smaller than a preset adjustment range, correcting the large/small flow control switching threshold. Since the valve closing threshold value is dynamically changed all the time, if the difference between the large/small flow control switching threshold value and the valve closing threshold value is too large or too small, the switching time of the large flow control and the small flow control is influenced, and the large/small flow control switching threshold value is revised at the moment, so that the best time for switching from the large flow to the small flow control can be ensured. Preferably, the preset adjustment range may be about 2% of the off threshold.
The method according to the above embodiment of the present invention will be described in further detail with reference to the accompanying drawings, wherein as shown in fig. 3a and 3b, the weight of the object to be measured is the only information that can be obtained in the present solution, and the continuous automatic filling can be divided into three stages according to the ideal weight change process: waiting for filling, during filling, and finishing filling (fine adjustment of parameters). A continuous automatic filling control algorithm is designed according to these three phases, as shown in fig. 3 a:
s301: and collecting the simulated weight W of the object to be detected.
S302: the analog weight W is filtered and amplified to obtain a weight value W1 and a flow value Δw1.
S310: whether step= =1 is satisfied, i.e. whether it is a filling waiting phase, if yes, step S311 is executed, otherwise Step S320 is executed.
S311: whether an empty bottle exists or not is determined, if yes, step S312 is executed, that is, a step=2 filling stage is entered, otherwise Step S313 (valve closing) is executed, and the process returns to Step S301.
S320: whether step= =2 is satisfied, i.e. whether it is the in-filling stage, if so, step S321 is executed, otherwise Step S330 is executed.
S321: judging whether the condition that the weight value W1 is less than A1 is satisfied, wherein A1 is the switching threshold value of the large/small flow control, if yes, executing the step S322, otherwise, executing the step S323.
S322: and controlling the filling valve to adjust to a first opening value, namely a maximum opening value.
S323: judging whether the condition of the weight value W1 > A2 is satisfied, wherein A2 is the valve closing threshold, if yes, executing steps S324 and S325 (entering step=3 for filling ending stage after closing the valve), otherwise executing Step S326.
S326: after the small flow control, the process returns to step S301, i.e., the opening value of the control filling valve becomes smaller as the weight value W1 increases.
S330: whether step= =3 is satisfied, i.e. whether it is the end of filling stage, if yes, step S331 is executed, otherwise Step S333 is executed (indicating that the filling process is abnormal, the valve is closed directly and then ends).
S331: indicating that the current container has been filled, fine-tuning the valve closing threshold A2 is performed, and then the process goes to Step S332, i.e. the process returns to step=1, and the filling operation of the next container is performed.
Specifically, the process of filtering the weight values is shown in fig. 4:
s401: first layer filtering: TD (tracking differentiator) filtering to obtain the weight W0.
S402: second layer filtering: w1 is obtained by W0 median filtering.
S403: flow acquisition: and obtaining the flow DeltaW 1 by linear fitting. The flow rate can be determined by the amount of change and the time difference corresponding to the weight value (total weight minus empty bottle weight).
As shown in fig. 5, a workflow of step=1 is given:
s501: whether the condition that W1 > empty bottle weight is satisfied is judged, if not, step S502 is executed, and if satisfied, step S503 is executed.
S502: the filling valve is closed. That is, if the container is not ready at this time, the filling operation is not performed.
S503: step=2, i.e. the stage in filling, i.e. the detection that the container is ready, can be entered directly into filling.
As shown in fig. 6, a workflow of performing a high-flow filling operation at an initial stage is given, which includes S601: and controlling the electromagnetic valve and the actuator to enable the opening of the filling valve to reach the maximum opening degree. The actuator is a cylinder.
As shown in fig. 7, a workflow of a low flow filling operation is presented, which may include:
S701: judging whether the condition delta W1 is more than B is met, wherein B is a 'small flow filling threshold'. And when the flow of the filling material is larger than the small flow filling threshold value, controlling the filling valve to continuously reduce the flow of the material, otherwise, keeping the state of small flow. If the condition is not satisfied, step S702 is executed, and if the condition is satisfied, step S703 is executed.
S702: and the opening of the filling valve is kept, so that the small-flow filling is realized.
S703: the filling valve is continuously controlled by using a pulse frequency modulation control mode (PFM) to reduce the flow rate of the filling valve (namely, reduce the opening degree of the filling valve).
As shown in fig. 8, a workflow for parameter fine-tuning at the end of filling under a scheme is provided, which may include:
s801: and obtaining W of the weight of the object to be measured in a stable state after the filling is finished.
S802: judging whether W is more than Y+Yth, wherein Yth represents an error, if so, executing step S803, otherwise, executing step S804;
s803: the closing valve threshold A2 is turned down.
S804, judging whether W is less than Y-Yth, if yes, executing step S805, otherwise, ending.
S805: the valve closing threshold A2 is turned high.
Continuous automatic filling is divided into three stages by the above detailed automatic filling control process: waiting for filling, during filling, and finishing filling (fine adjustment of parameters). And performing TD and median filtering treatment on the weight values, and obtaining the continuous flow through straight line fitting. After the filling is terminated and the filling end stage is started, the stable weight data is collected at the stage to serve as the final weight, and the parameter threshold value is automatically adjusted by comparing the measured weight with the target weight, so that the precision is improved.
Some embodiments of the present invention provide a storage medium having program instructions stored therein, and a computer executing any one of the above automatic filling control methods after reading the program instructions.
The invention also provides an automatic filling control system, which comprises a filling controller; as shown in fig. 9, the filling controller includes at least one processor 101 and at least one memory 102, where at least one memory 102 stores program instructions, and at least one processor 101 executes the automatic filling control method according to any of the above schemes after reading the program instructions. The automatic filling control system may further include: an input device 103 and an output device 104. The processor 101, memory 102, input device 103, and output device 104 may be connected by a bus or other means.
Further, as shown in fig. 10, the automatic filling control system includes an automatic filling control unit 200, and further includes an analog weight sensor 206 disposed below the container 205, for acquiring an analog signal representing the weight of the object to be measured in real time, and transmitting the analog signal to the processor 100. Also included within the filling controller 200 are solenoid valves 202 and cylinders 203, the filling controller 201, solenoid valves 202 and cylinders 203 being integrated in the automatic filling control unit 200 to form a single integral element; the electromagnetic valve 202 is connected between the filling controller 201 and the air cylinder 203, and the execution output end of the air cylinder 203 is connected with the filling valve 204; the filling controller 201 controls the cylinder 203 to act after passing through the electromagnetic valve 202 to adjust the opening value of the filling valve 204, thereby adjusting the amount and speed of the material filled into the container 205. Compared with the prior art, the system reduces the use of the pulse generator, optimizes the measuring structure, and can obtain accurate data of the flow rate through fitting of the information of the weight, so that higher filling precision can be realized.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. An automatic filling control method is characterized by comprising the following steps:
Responding to a filling start signal, and controlling a filling valve to be opened according to a first opening value;
Acquiring an analog signal for representing the weight of the object to be detected in real time, filtering and denoising the analog signal, and then amplifying to obtain a weight value of the object to be detected;
If the weight value of the object to be detected reaches a large/small flow control switching threshold value, reducing the opening of the filling valve in real time along with the increase of the weight value of the object to be detected;
if the weight value of the object to be detected reaches a valve closing threshold value, controlling a filling valve to be closed;
Acquiring a weight value of an object to be measured in a stable state as a filling weight value;
If the difference value between the filling weight value and the filling target value exceeds the allowable error range, correcting the valve closing threshold value;
If the difference between the filling weight value and the filling target value exceeds the allowable error range, the step of correcting the valve closing threshold value comprises the following steps:
and if the difference value between the large/small flow control switching threshold and the corrected valve closing threshold is smaller than a preset adjustment range, correcting the large/small flow control switching threshold.
2. The automatic filling control method according to claim 1, wherein in the step of collecting an analog signal representing the weight of the object to be measured in real time, filtering and denoising the analog signal and then amplifying the same to obtain the weight value of the object to be measured:
The filtering and noise reduction processing process comprises the following steps: dual filtering of TD filtering and median filtering.
3. The automatic filling control method according to claim 1, wherein if the difference between the filling weight value and the filling target value exceeds an allowable error range, the step of correcting the valve closing threshold value further comprises:
Training a learning model by using a training sample, wherein the training sample takes a difference value between a filling weight value sample and a filling target value sample as input, takes a valve closing threshold correction value sample as output, and takes the learning model after training as a correction model;
inputting the difference value between the filling weight value and the filling target value into the correction model to obtain a correction value of a valve closing threshold;
and adding the correction value to the valve closing threshold value to obtain the corrected valve closing threshold value.
4. The automatic filling control method according to any one of claims 1 to 3, wherein if the weight value of the object to be measured reaches a large/small flow control switching threshold value, the step of decreasing the opening of the filling valve in real time as the weight value of the object to be measured increases includes:
processing the corresponding relation between the weight value of the object to be measured and time according to a linear fitting method to obtain a filling flow value at any moment;
Determining a real-time filling valve opening value according to the filling flow value;
and controlling the opening value of the filling valve to keep synchronous with the opening value of the real-time filling valve.
5. A storage medium having stored therein program instructions, which, upon reading by a computer, perform the automatic filling control method according to any one of claims 1-4.
6. An automatic filling control system is characterized by comprising a filling controller;
The filling controller comprises at least one processor and at least one memory, wherein at least one memory stores program instructions, and the automatic filling control method of any one of claims 1-4 is executed after at least one processor reads the program instructions.
7. The automatic filling control system of claim 6, further comprising:
The analog weight sensor is arranged below the container and used for acquiring an analog signal representing the weight of the object to be detected in real time and sending the analog signal to the processor.
8. The automatic filling control system of claim 7, further comprising a solenoid valve and a cylinder:
the filling controller, the electromagnetic valve and the air cylinder are integrated into an automatic filling control unit;
The electromagnetic valve is connected between the filling controller and the air cylinder, and the execution output end of the air cylinder is connected with the filling valve; and the filling controller controls the cylinder to act after passing through the electromagnetic valve so as to adjust the opening value of the filling valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110105771.7A CN114789984B (en) | 2021-01-26 | Automatic filling control method, storage medium and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110105771.7A CN114789984B (en) | 2021-01-26 | Automatic filling control method, storage medium and system |
Publications (2)
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| CN114789984A CN114789984A (en) | 2022-07-26 |
| CN114789984B true CN114789984B (en) | 2024-07-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108438279A (en) * | 2018-03-20 | 2018-08-24 | 四川大学 | A kind of filling intelligent observing and controlling system of liquid high-precision and its method |
| CN109677651A (en) * | 2017-10-19 | 2019-04-26 | Smc(中国)有限公司 | Weighing loader and control method |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109677651A (en) * | 2017-10-19 | 2019-04-26 | Smc(中国)有限公司 | Weighing loader and control method |
| CN108438279A (en) * | 2018-03-20 | 2018-08-24 | 四川大学 | A kind of filling intelligent observing and controlling system of liquid high-precision and its method |
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