A gate opening self-adaptive adjusting system

Abstract

The application provides a gate opening self-adaptive adjustment system, which comprises a metering device and a gate control device; the metering device comprises a metering scale provided with a gate, which is used for storing and transmitting materials; a metering control unit is electrically connected with the metering scale and obtains real-time flow data of the materials in the metering scale; the gate control device comprises a driving mechanism electrically connected with and driving the gate; a gate control unit is in communication connection with the metering control unit, electrically connected with and controlling the driving mechanism; wherein the gate control unit obtains the real-time flow data by communication connection with the metering control unit, and controls the driving mechanism according to the real-time flow data, so as to drive the gate to dynamically adjust the gate opening. The application reads the real-time flow data of the metering scale, dynamically adjusts the gate opening of the hopper under the scale in combination with the material level signal of the metering scale, balances the maximization of the gate opening and the continuity of the material flow, and further improves the yield.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gate opening control, in particular to a gate opening self-adaptive adjustment system. BACKGROUND

[0002] At present, the cargo measurement of bulk grain loading and unloading ship operation is completed through an automatic non-continuous measurement system, and the operation quality of the measurement system directly affects the operation efficiency of the loading and unloading ship process.

[0003] Due to the automatic non-continuity of the bulk grain measurement scale, the current scale under the hopper gate is a pneumatic gate and a manual gate, wherein the pneumatic gate has only two forms of opening and closing; the manual gate needs to be adjusted by a person to a fixed opening degree, and the opening degree adjusted by the person is necessarily a conservative opening degree, which cannot achieve the highest efficiency of the grain passing through the gate. Therefore, the opening degree of the scale under the hopper gate cannot be adjusted in real time, and whether the opening degree setting is reasonable becomes the key to restricting the process operation efficiency: when the opening degree setting of the scale under the hopper gate is greater than the actual required opening degree of the process material, the process material presents discontinuity (as shown in Figure 1 ), which not only affects the dust suppression effect of the dust suppression chute, affects the success rate of the heavy load start of the air cushion conveyor, but also restricts the further improvement of the process efficiency; when the opening degree setting of the scale under the hopper gate is less than the actual required opening degree of the process material, although the effect of continuous flow can be achieved (as shown in Figure 2 ), the material in the scale under the hopper will gradually accumulate until the limit alarm occurs, resulting in scale stop, which is also not conducive to the improvement of the production capacity.

[0004] With the continuous rise of bulk grain transfer volume, it is urgent to develop an automatic control system for the opening degree of the scale under the hopper gate of the bulk grain, so as to speed up the bulk grain transfer speed and improve the grain transportation quality. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present application is to provide a gate opening self-adaptive adjustment system for solving at least one of the technical problems that the process material continuity is inconsistent with the bulk grain transfer speed demand, the dust suppression effect of the dust suppression chute is low, and the success rate of the heavy load start of the air cushion conveyor after failure is low.

[0006] In order to achieve the above object, the present application provides a gate opening self-adaptive adjustment system, comprising: a metering device and a gate control device; the metering device comprises: a metering scale, a gate is arranged on the metering scale, the metering scale is used for storing and transmitting materials; a metering control unit is electrically connected with the metering scale and obtains real-time flow data of materials in the metering scale; the gate control device comprises: a driving mechanism electrically connected with and driving the gate; a gate control unit is in communication connection with the metering control unit, electrically connected with and controlling the driving mechanism; wherein the gate control unit obtains the real-time flow data by communication connection with the metering control unit, and controls the driving mechanism according to the real-time flow data, so as to drive the gate to dynamically adjust the gate opening.

[0007] In an embodiment of the present application, the metering scale comprises a scale-top hopper, a scale body and a scale-bottom hopper; the gate is arranged at the bottom of the scale-bottom hopper; the metering control unit is used for obtaining low material level signals and medium material level signals of the scale-bottom hopper.

[0008] In an embodiment of the present application, the gate control unit obtains the low material level signals and the medium material level signals of the scale-bottom hopper by communication connection with the metering control unit, and controls the driving mechanism according to the low material level signals and the medium material level signals, so as to drive the gate to dynamically adjust the gate opening, including: when the gate control unit receives a low material level alarm signal, the driving mechanism is controlled to drive the gate to reduce the gate opening; when the gate control unit receives a medium material level alarm signal, the driving mechanism is controlled to drive the gate to increase the gate opening.

[0009] In an embodiment of the present application, the optimal state of the gate opening is that the state that the gate control unit does not receive the medium material level alarm signal is maintained for not less than one hour, and does not receive the low material level alarm signal.

[0010] In an embodiment of the present application, the metering control unit adopts Siemens S7-1200 PLC; the gate control unit comprises a PLC controller, the PLC controller is Siemens S7-1200 PLC; the metering control unit and the gate control unit are in communication through a profinet protocol.

[0011] In an embodiment of the present application, the S7-1200 PLC of the gate control device is connected with an HMI display screen through a PROFINET bus.

[0012] In an embodiment of the present application, a limiting part is arranged at an initial opening position of the gate; the limiting part is electrically connected with the gate control unit.

[0013] In an embodiment of the present application, when the metering device has completed the current operation or before the next operation starts, the gate control device controls the gate to perform a full opening and closing operation, and sends a feedback signal to the gate control unit through the limiting component, and the gate control unit opens the next operation after receiving the feedback signal.

[0014] In an embodiment of the present application, an opening degree interval reference table is set according to different operation types of the metering scale, and corresponding gate opening degrees are set for different flow intervals; when the absolute value of the difference between the real-time flow data S n+1 of the next scale obtained by the metering control unit and the real-time flow data S n of the current scale exceeds a preset value, and they are not in the same flow interval corresponding to the opening degree, the metering control device automatically adjusts the gate opening degree to the gate opening degree corresponding to the flow interval in which S n+1 is located.

[0015] In an embodiment of the present application, the driving mechanism is a servo motor.

[0016] In summary, the gate opening degree self-adaptive adjustment system of the present application has the following beneficial effects: by reading the real-time flow data of the metering scale and dynamically adjusting the gate opening degree of the scale hopper according to the material level signal of the metering scale, the balance between the maximum gate opening degree and the continuity of the material flow is achieved, thereby further improving the yield. Specifically, by reading the real-time flow data of the metering scale, including the low material level signal and the medium material level signal of the scale hopper, when the low material level signal is read, the gate opening degree is reduced; when the medium material level signal is read, the gate opening degree is increased; through the automatic dynamic adjustment of the gate opening degree, the continuity of the material flow is realized. And by communicating to the gate control system PLC, the automatic control of the gate opening degree can be realized.

[0017] Specific beneficial effect analysis is as follows:

[0018] 1. The present application uses the same PLC controller for the gate control device as the metering device, so that the communication between the two is more convenient, and the data transmission between the two is enhanced through network communication;

[0019] 2. The present application improves the accuracy, stability and speed of the response of the gate driving mechanism after receiving the control signal, and improves the stability and reliability of the gate opening degree information feedback;

[0020] 3. According to the working state of the metering device, the gate opening degree is in a reasonable position at different stages (start, end) of the process operation, reducing the material residue of the gate;

[0021] 4. The present application makes the process material continuous during the operation process through the gate control device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the material flow when the opening degree of the weighing scale's lower hopper gate is set greater than the actual required opening degree of the process material, according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the material flow when the opening degree of the weighing scale's lower hopper gate is set less than the actual required opening degree of the process material, according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of a gate opening adaptive adjustment system according to an embodiment of the present invention.

[0025] Figure 4A This is a schematic diagram illustrating the selected communication mode for the Siemens S7-1200 PLC program configuration in this embodiment of the invention.

[0026] Figure 4B This is a schematic diagram illustrating the configuration of the communication port in the Siemens S7-1200 PLC program configuration of this embodiment of the invention.

[0027] Figure 4C This is a schematic diagram illustrating the programming module configuration for the Siemens S7-1200 PLC in this embodiment of the invention.

[0028] Figure 5 This is a schematic diagram illustrating the setting of the opening range based on the HMI (Human-Machine Interface) in an embodiment of the present invention. Detailed Implementation

[0029] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0030] It is to be understood that the structures, proportions, sizes, etc. shown in the drawings accompanying the present specification are merely intended to assist in the understanding of the present disclosure and are not intended to limit the scope of the present application, and therefore, any modification, change in proportion relationship, or adjustment in size that does not affect the effects and purposes of the present application should still fall within the scope of the present disclosure. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", "transverse", "longitudinal", etc. used in the present specification are merely for the convenience of clear description and are not intended to limit the scope of the present application, and any change in relative relationship without substantial change in technical content should also be considered as the scope of the present application.

[0031] In addition, the terms "first", "second" are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0032] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] It should be further pointed out that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and only show the components related to the present application in the drawings, not according to the number, shape and size of the components during actual implementation. The shape, number and proportion of each component during actual implementation can be arbitrarily changed, and the layout form of the components can also be more complex.

[0034] To solve the problems in the prior art, the present application provides a gate opening degree self-adaptive adjustment system, which is used to solve at least one of the technical problems that the continuity of the process material and the speed requirement of the bulk grain transfer are inconsistent, the dust suppression effect of the dust suppression chute is low, and the success rate of the heavy load start after the air cushion conveyor fails is low. In the following, the device in the present application will be explained and described in detail in combination with specific embodiments.

[0035] As Figure 3As shown, a structure schematic diagram of a gate opening self-adaptive adjustment system in an embodiment of the present application is shown. The system mainly comprises: a metering device and a gate control device (not shown); wherein,

[0036] The metering device comprises:

[0037] A metering scale 110, on which a gate 111 is arranged, the metering scale 110 is used for storing and transmitting materials;

[0038] A metering control unit 120, which is electrically connected to the metering scale 110 and acquires real-time flow data of materials in the metering scale 110;

[0039] The gate control device comprises:

[0040] A driving mechanism 210, which is electrically connected to and drives the gate 111;

[0041] A gate control unit 220, which is communicatively connected to the metering control unit 120, electrically connected to and controls the driving mechanism 210;

[0042] Wherein, the gate control unit 220 acquires the real-time flow data by communicatively connecting to the metering control unit 120, and controls the driving mechanism 210 according to the real-time flow data, so as to drive the gate 111 to dynamically adjust the gate opening.

[0043] In an embodiment of the present application, the metering scale 110 comprises a scale-up hopper, a scale body and a scale-down hopper; the gate 111 is arranged at the bottom of the scale-down hopper (as shown in Figure 2 The metering control unit 120 is used for acquiring low material level signals and middle material level signals of the scale-down hopper.

[0044] In some examples, the gate 111 is preferably an electric plug-in gate, which is used for controlling the flow of materials; its advantages are good sealing, corrosion resistance and large pressure bearing.

[0045] The driving mechanism 210 in the present application is a servo motor, which drives the gate to move through the servo motor.

[0046] The present application preferably adopts a servo motor connected to a servo controller to calculate the movement distance to control and adjust the gate opening. Because the servo motor has high control accuracy, adjustable speed, good durability, and does not need an electronic ruler to measure the opening, the servo motor can adapt to frequent start and stop.

[0047] Preferably, the driving mechanism 210 adopts a servo motor ECMA-K11310RS, and is used in conjunction with a servo controller ASD-A2-1043-M of Delta. The ASD-A2-1043-M Delta servo driver series product is a multifunctional intelligent instrument with programmable measurement, display, digital communication and electric energy pulse transmission output, and has a measurement accuracy of 0.5 level, realizes LED field display and remote RS-485 digital interface communication, and adopts MODBUS-RTU communication protocol.

[0048] In addition, the driving mechanism 210 can also adopt a common three-phase asynchronous motor, and the real-time opening degree is measured and fed back by increasing an electronic ruler, so as to automatically control the opening degree according to the flow. The advantage of this mode is low cost, simple control and easy implementation; however, the control precision is not high, the PLC needs to increase an analog input module, and the motor speed is constant, which is not conducive to real-time and rapid adjustment.

[0049] Preferably, the metering control unit 120 adopts a Siemens S7-1200 PLC; the gate control unit 220 comprises a PLC controller, and the PLC controller is a Siemens S7-1200 PLC; the metering control unit 120 and the gate control unit 220 are connected in communication through a profinet protocol.

[0050] When the metering control unit in the metering device is a PLC controller, and a Siemens 1200 series PLC is adopted, the same S1200-PLC controller is arranged in the gate control device. The Siemens S1200 series PLC is provided with an S7-TCOP interface, profinet network communication protocol is utilized, and the interconnection between PLCs can be realized through switching. The advantage of this design is accurate data transmission, and the cost is reduced by increasing a switch and network wiring.

[0051] Combining Figure 4A , 4B , and 4C, the metering device and the gate control device adopt a network transmission mode for data interaction, and are directly configured in programs: in the Siemens configuration program compilation, the PROFINET communication mode is selected, the next menu is entered, the interface is set, and the interface type is selected as Ethernet; after the Ethernet communication is set, the program module for mutual communication between the gate control unit and the metering control unit is written, and bidirectional data intercommunication can be realized.

[0052] In addition, the data interaction between the gate control device and the metering device can also be achieved by adding an analog output module to the PLC controller of the metering device, converting the flow data into a 4-20MA analog signal, outputting the signal through the output module, and transmitting the signal into the analog receiving module of the gate control device using the profibus dp communication protocol. The gate control unit receives the signal and calculates the flow information to adjust the gate opening. In this scheme, the gate control device and the metering device operate independently and do not interfere with each other. However, both the gate control device and the metering device need to add an analog module, which is costly and the data is transmitted as an electrical signal during transmission, which may cause certain data attenuation and electrical signal interference during transmission.

[0053] In some examples, the S7-1200 PLC of the gate control device is connected with an HMI display screen through a PROFINET bus, to set the corresponding gate opening according to the flow range. Figure 5 As shown in FIG. 8, the HMI display screen is provided with a speed setting, a target opening, and an actual opening. The selection of the work type and the adjustment of the gate opening and the speed can be performed locally.

[0054] For example, the HMI display screen can set an opening interval reference table according to different work types of the metering scale 110, and set the corresponding gate opening for different flow intervals. The work types include, but are not limited to, soybean loading, sorghum loading, pea loading, wheat loading, corn loading, soybean unloading, sorghum unloading, pea unloading, and wheat unloading.

[0055] Specifically, since the real-time flow of bulk cargo during loading and unloading varies between 0 and 1200 t / h, the bulk density of different types of grain also varies, and the opening also varies accordingly. Therefore, the interval span of the real-time flow is subdivided, and each 100 t / h is taken as a fixed opening interval, and different openings are set for each type of grain, as shown in the following table:

[0056]

[0057] In some examples, the method for dynamically adjusting the gate opening in real time includes:

[0058] setting an opening interval reference table according to different work types of the metering scale 110, and setting the corresponding gate opening for different flow intervals;

[0059] When the absolute value of the difference between the real-time flow data S n+1 of the next scale obtained by the metering control unit 120 and the real-time flow data S n of the current scale exceeds a preset value, and the two are not in the same flow interval corresponding to the opening, the metering control device automatically adjusts the gate opening to S n+1a gate opening corresponding to a flow interval where the real-time flow data is located.

[0060] wherein the preset value is 20 t / h, when |S n -S n+1 |>20, and S n+1 and S n When the real-time flow data is not in the same flow interval corresponding to the gate opening, the gate control unit 220 controls the driving mechanism 210 to adjust the gate opening to S n+1 a gate opening corresponding to a flow interval where the real-time flow data is located.

[0061] Example 1: When the grain species for operation is sorghum loading, the real-time flow of the 1000th scale is 760 t / h, and the corresponding gate opening is 245 mm; the real-time flow of the 1001th scale is 745 t / h, and the corresponding gate opening interval is in the 650-750 range, but because the real-time flow change between the two scales is less than 20 t / h, the gate does not make any change.

[0062] Example 2: When the grain species for operation is sorghum loading, the real-time flow of the 1000th scale is 760 t / h, and the corresponding gate opening interval is in the 750-850 range, and the gate opening is 245 mm; the real-time flow of the 1001th scale is 725 t / h, and the corresponding gate opening interval is in the 650-750 range; but the real-time flow change between the two scales is greater than 20 t / h, and is not in the same opening interval, so the gate automatically adjusts the gate opening corresponding to the 1001th scale to 230 mm.

[0063] In some examples, the gate control unit 220 is connected to the metering control unit 120 through communication to obtain the low material level signal and the medium material level signal of the scale under the hopper, and controls the driving mechanism 210 to drive the gate 111 to dynamically adjust the gate opening, including:

[0064] When the gate control unit 220 receives a low material level alarm signal, it controls the driving mechanism 210 to drive the gate 111 to reduce the gate opening;

[0065] When the gate control unit 220 receives a medium material level alarm signal, it controls the driving mechanism 210 to drive the gate 111 to increase the gate opening.

[0066] In some examples, the optimal state of the gate opening is that the state in which the gate control unit 220 has not received a medium material level alarm signal is maintained for not less than one hour, and has not received a low material level alarm signal. At the same time, it is judged that the material in the current process is continuous.

[0067] In some examples, a limiting component is arranged at the initial opening position of the gate 111; the limiting component is electrically connected to the gate control unit 220.

[0068] It should be noted that the limiting component can be a position sensor or the like, and the gate control device controls the gate 111 to perform a full opening and closing action before the next operation of the metering device, and sends a feedback signal to the gate control unit 220 through the limiting component; the gate control unit 220 opens the next operation after receiving the feedback signal. The feedback signal is used to indicate that the metering scale has been emptied.

[0069] In addition, by obtaining real-time information of the working state of the metering device, a gate full opening and closing basis is added to the gate control unit 220:

[0070] When the gate control unit 220 receives the working information of the metering device in the working state, the gate control device dynamically adjusts the gate opening degree by obtaining the real-time flow data of the metering device;

[0071] When the gate control unit 220 receives the working information of the metering device in the non-working state, the gate control unit 220 controls the driving mechanism 210 to drive the gate 111 to perform a full opening and closing action once, and then returns to the initial opening degree, until the working information of the metering device in the working state is received again, and the gate opening degree is dynamically adjusted according to the real-time flow data.

[0072] Specifically, the servo motor action is controlled by the input signal, and the actual motor rotor speed and gate travel distance are determined by the pulse. The electronic gear ratio of the servo motor of Delta is set to 128:10 when it leaves the factory, and the servo motor needs 100,000 pulses to rotate one revolution. Since the maximum pulse that can be provided by the PLC itself is 25,000, it is necessary to adjust the electronic gear ratio. Assuming that the value is enlarged by 500 times, the gear ratio is 64,000:10 at this time. Under this ratio, the servo motor needs only 200 pulses to rotate one revolution. Through actual measurement on site, the gate opening degree changes by 0.6 mm per revolution of the gate. Therefore, the gate opening and closing speed is:

[0073] Gate opening and closing speed = (pulse per second / pulse required for one revolution) * gate opening degree per revolution

[0074] The maximum speed of the gate that can be reached by the PLC pulse is 75 mm / s (i.e. 25,000 / 200*0.6), and the rated speed of the servo motor ECMA-K11310RS selected in the application is 2000 r / min (i.e. 33.3 r / s), and the actual maximum speed that can be reached is:

[0075] Actual maximum speed = rated speed * distance traveled per revolution,

[0076] The actual maximum speed can be calculated as 20 mm / s (i.e. 33.3 r / s * 0.6 mm / s = 20 mm / s).

[0077] When the maximum gate opening is set to 330 mm and the minimum gate opening is set to 150 mm, and the gate switching speed is set to 14 mm / s based on the overall durability of the equipment, the optimal response time of the gate is:

[0078] Gate optimal response time = (gate maximum opening - gate minimum opening) / gate switching speed

[0079] Therefore, under the fluctuation of the logistics, the gate will change to the appropriate opening within 13 seconds, and the response time of the gate meets the expectation.

[0080] In summary, the gate opening self-adaptive adjustment system provided by the present application comprises a metering device and a gate control device. The metering device comprises a metering scale provided with a gate, which is used to store and transport materials; and a metering control unit electrically connected to the metering scale and acquiring real-time flow data of the materials in the metering scale. The gate control device comprises a driving mechanism electrically connected to and driving the gate; and a gate control unit communicatively connected to the metering control unit, electrically connected to and controlling the driving mechanism. The gate control unit acquires the real-time flow data by communicatively connecting to the metering control unit, and controls the driving mechanism according to the real-time flow data to drive the gate to dynamically adjust the gate opening. The present application dynamically adjusts the gate opening of the scale under the hopper by reading the real-time flow data of the metering scale and combining the material level signal of the metering scale, so as to balance the maximization of the gate opening and the continuity of the material flow, thereby further improving the yield.

[0081] In summary, the present application effectively overcomes the shortcomings in the prior art and has high industrial utilization value.

[0082] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical thought of the present application should be covered by the claims of the present application.

Claims

1. A gate opening self-adaptive adjustment system, characterized in that, The system comprises a metering device and a gate control device; the metering device comprises: a metering scale provided with a gate, the metering scale being used for storing and transmitting materials; a metering control unit electrically connected to the metering scale and acquiring real-time flow data of materials in the metering scale; the gate control device comprises: a driving mechanism electrically connected to and driving the gate; a gate control unit communicatively connected to the metering control unit, electrically connected to and controlling the driving mechanism; wherein the gate control unit acquires the real-time flow data by communicatively connecting to the metering control unit, and controls the driving mechanism according to the real-time flow data to drive the gate to dynamically adjust the gate opening degree; according to the different operation types of the metering scale, an opening degree interval reference table is set, and corresponding gate opening degrees are set for different flow intervals; when the absolute value of the difference between the real-time flow data Sn+1 of the next scale acquired by the metering control unit and the real-time flow data Sn of the current scale exceeds a preset value, and the two are not in the same flow interval corresponding to the opening degree, the metering control device automatically adjusts the gate opening degree to the gate opening degree corresponding to the flow interval where Sn+1 is located; the gate control unit acquires the low material level signal and the medium material level signal of the scale by communicatively connecting to the metering control unit, and controls the driving mechanism according to the low material level signal and the medium material level signal to drive the gate to dynamically adjust the gate opening degree, including: when the gate control unit receives a low material level alarm signal, the driving mechanism is controlled to drive the gate to reduce the gate opening degree; when the gate control unit receives a medium material level alarm signal, the driving mechanism is controlled to drive the gate to increase the gate opening degree; the optimal state of the gate opening degree is that the state of the gate control unit without receiving the medium material level alarm signal is maintained for not less than one hour, and without receiving the low material level alarm signal.

2. The gate opening self-adaptive adjusting system according to claim 1, wherein, The metering scale comprises a scale-up hopper, a scale body and a scale-down hopper; the gate is arranged at the bottom of the scale-down hopper; the metering control unit is used for acquiring the low material level signal and the medium material level signal of the scale-down hopper.

3. The gate opening adaptive adjustment system of claim 1, wherein The metering control unit adopts Siemens S7-1200 PLC; the gate control unit comprises a PLC controller, which is Siemens S7-1200 PLC; the metering control unit and the gate control unit are communicatively connected through profinet protocol.

4. The gate opening self-adaptive adjusting system according to claim 3, wherein, The S7-1200 PLC of the gate control device is connected with an HMI display screen through a PROFINET bus.

5. The gate opening adaptive adjustment system of claim 1, wherein, A limiting part is arranged at the initial opening position of the gate; the limiting part is electrically connected to the gate control unit.

6. A gate opening self-adaptive adjusting system according to claim 5, characterized in that, including: when the current operation of the metering device has been completed or before the next operation starts, the gate control device controls the gate to perform a full opening and full closing action, and sends a feedback signal to the gate control unit through the limiting part, and the gate control unit starts the next operation after receiving the feedback signal.

7. The gate opening self-adaptive adjusting system according to claim 1, wherein, The driving mechanism is a servo motor.

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