CN114834853A

CN114834853A - Coal conveying control method, device, equipment and storage medium based on coal flow difference

Info

Publication number: CN114834853A
Application number: CN202210763395.5A
Authority: CN
Inventors: 白丽; 周浩天; 范鑫杰; 李亚宁; 王瑞
Original assignee: Shanxi Dedicated Measurement Control Co ltd
Current assignee: Shanxi Dade Measurement And Control Technology Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-08-02
Anticipated expiration: 2042-07-01
Also published as: CN114834853B

Abstract

The application relates to the technical field of transmission devices, in particular to a coal conveying control method, a coal conveying control device, coal conveying control equipment and a storage medium based on coal flow difference, wherein the method comprises the steps of acquiring upstream image information of an upstream conveying device shot by an upstream camera, and processing the upstream image information to obtain a first current coal flow; acquiring downstream image information of a downstream conveying device shot by a downstream camera, and processing the downstream image information to obtain a second current coal flow; judging whether the difference value between the first current coal flow and the second current coal flow is greater than a first coal blockage judging threshold value or not; if so, sending a first opening increasing signal to a coal bunker feed opening to increase the opening of the coal bunker feed opening, and sending a first speed increasing signal to the downstream conveying device based on the opening of the coal bunker feed opening to increase the conveying speed of the downstream conveying device. The application has the effect of improving transmission efficiency.

Description

Coal conveying control method, device, equipment and storage medium based on coal flow difference

Technical Field

The present disclosure relates to the field of transmission devices, and in particular, to a method, an apparatus, a device, and a storage medium for controlling coal delivery based on a coal flow difference.

Background

Coal is widely used for industrial production as traditional fuel, and in order to improve the conveying efficiency of coal when coal is mined, a plurality of conveying belts are required to be utilized for conveying coal, a coal bunker is arranged between adjacent conveying belts, the discharge end of an upstream conveying belt is positioned at the feed inlet of the coal bunker, and the feed end of a downstream conveying belt is positioned at the feed outlet of the coal bunker. The upstream conveyor belt conveys coal into the coal bunker, and then the coal in the coal bunker falls onto the downstream conveyor belt from a feed opening of the coal bunker.

However, when the volume of coal is large, the coal cannot pass through the feed opening of the coal bunker, so that the coal conveyed by the upstream conveyor belt is accumulated in the coal bunker, namely, the situation of coal blockage occurs, and after the situation of coal blockage occurs, workers need to shut down the conveyor belt and then process the coal, so that the transmission efficiency is low.

Disclosure of Invention

In order to improve the transmission efficiency, the application provides a coal conveying control method, a coal conveying control device, coal conveying control equipment and a storage medium based on coal flow difference.

In a first aspect, the coal transfer control method based on the coal flow difference provided by the application adopts the following technical scheme:

a coal conveying control method based on coal flow difference comprises the following steps:

acquiring upstream image information of an upstream conveying device shot by an upstream camera, and processing the upstream image information to obtain a first current coal flow;

acquiring downstream image information of a downstream conveying device shot by a downstream camera, and processing the downstream image information to obtain a second current coal flow;

judging whether the difference value between the first current coal flow and the second current coal flow is greater than a first coal blockage judging threshold value or not;

if so, sending a first opening increasing signal to a coal bunker feed opening to increase the opening of the coal bunker feed opening, and sending a first speed increasing signal to the downstream conveying device based on the opening of the coal bunker feed opening to increase the conveying speed of the downstream conveying device.

By adopting the technical scheme, the image information is acquired by using the camera, so that the first current coal flow and the second current coal flow are obtained through processing, the condition of whether coal blockage occurs is obtained by judging whether the difference value between the first current coal flow and the second current coal flow is greater than a first coal blockage judging threshold value, when coal blockage is judged, the electronic equipment controls the opening of the feed opening of the coal bunker to be increased, and the conveying speed of the downstream conveying device is controlled to be increased based on the opening. The opening degree of the coal bunker feed opening is increased, so that the coal with large volume can pass through, the problem of coal blockage is solved, the opening degree of the coal bunker feed opening is increased, the feed flow of the coal bunker feed opening is increased, the conveying speed of the downstream conveying device is increased at the moment, the possibility that the coal falls off from the downstream conveying device can be reduced, and the possibility of coal overflow is reduced.

Optionally, after the opening of the bunker discharge opening sends a first speed increase signal to the downstream conveyor to increase the conveying speed of the downstream conveyor, the method further includes:

judging whether the second current coal flow is larger than the first current coal flow;

if the second current coal flow is greater than the first current coal flow, sending a first opening reduction signal to the bunker discharge opening to reduce the bunker discharge opening, and sending a first speed reduction signal to the downstream conveyor based on the opening of the bunker discharge opening to reduce the conveying speed of the downstream conveyor;

and if the second current coal flow is not greater than the first current coal flow, executing the step of sending a first opening increasing signal to a bunker discharge opening to increase the opening of the bunker discharge opening, and sending a first speed increasing signal to the downstream conveying device based on the opening of the bunker discharge opening to increase the conveying speed of the downstream conveying device.

By adopting the technical scheme, after the opening degree of the feed opening of the coal bunker and the transmission speed of the downstream transmission device are increased, the first current coal flow and the second current coal flow are obtained, whether the second current coal flow is larger than the first current coal flow or not is judged, if the second current coal flow is larger than the first current coal flow, the coal is judged not to be blocked, the electronic equipment controls the opening degree of the feed opening of the coal bunker to be reduced, and the transmission speed of the downstream transmission device is controlled to be reduced. After the problem of coal blockage is solved, the opening degree of the feed opening of the coal bunker is controlled to be reduced, meanwhile, the conveying speed of the downstream conveying device is controlled to be reduced, and energy waste can be reduced. And if the second current coal flow is not greater than the first current coal flow, determining that the coal is still in a coal blockage state, and continuously controlling the opening of the feed opening of the coal bunker to increase by the electronic equipment and controlling the conveying speed of the downstream conveying device to increase.

Optionally, after the sending a first opening degree decreasing signal to the bunker discharge opening to decrease the bunker discharge opening, and sending a first speed decreasing signal to the downstream conveyor based on the opening degree of the bunker discharge opening to decrease the conveying speed of the downstream conveyor, the method includes:

acquiring a first current opening degree of the coal bunker feeding port, and acquiring a first coal bunker feeding flow corresponding to the first current opening degree;

judging whether the difference value between the first coal bunker discharging flow and the second current coal flow is larger than a second coal blockage judging threshold value or not;

if the difference value between the first bunker discharge flow and the second current coal flow is larger than a second coal blockage judgment threshold value, sending a first opening increasing signal to a bunker discharge opening to increase the opening of the bunker discharge opening, and sending a first speed increasing signal to a downstream conveying device based on the opening of the bunker discharge opening to increase the conveying speed of the downstream conveying device;

if the difference value between the first coal bunker blanking flow and the second current coal flow is not larger than a second coal blockage judgment threshold value, judging whether the first coal bunker blanking flow is equal to the initial blanking flow;

if the blanking flow of the first coal bunker is equal to the initial blanking flow, stopping sending a first speed reduction signal;

and if the blanking flow of the first coal bunker is greater than the initial blanking flow, executing the step of sending a first opening reduction signal to the coal bunker blanking port to reduce the coal bunker blanking port, and sending a first speed reduction signal to the downstream conveying device based on the opening of the coal bunker blanking port to reduce the conveying speed of the downstream conveying device.

By adopting the technical scheme, the first current opening of the feed opening of the coal bunker is obtained, the corresponding feed flow of the first coal bunker is obtained according to the first current opening, the second current coal flow of the downstream conveying device is obtained, whether the difference value between the feed flow of the first coal bunker and the second current coal flow is greater than the second coal blockage judgment threshold value or not is judged, namely whether the coal blockage situation occurs in the process of reducing the opening of the feed opening of the coal bunker is judged, if the coal blockage occurs, the electronic equipment controls the opening of the feed opening of the coal bunker to be increased, and controls the conveying speed of the downstream conveying device to be increased; if no coal blockage occurs, judging whether the blanking flow of the first coal bunker is equal to the initial blanking flow, namely judging whether the opening degree of the blanking port of the coal bunker is recovered to the initial state, if so, controlling the opening degree of the blanking port of the coal bunker to stop reducing by the electronic equipment, and if not, controlling the opening degree of the blanking port of the coal bunker to continue reducing by the electronic equipment. At the coal bunker feed opening reduction in-process, judge whether to take place the coal blockage to make corresponding action, can solve the coal blockage problem, and under the condition of not coal blockage, resume to initial condition, reduce energy consumption.

Optionally, before the sending a first opening degree decreasing signal to the bunker discharge opening to decrease the bunker discharge opening, and sending a first speed decreasing signal to the downstream conveyor based on the opening degree of the bunker discharge opening to decrease the conveying speed of the downstream conveyor, the method further includes:

sending a first speed increasing signal to the downstream conveying device, and increasing the conveying speed again by the downstream conveying device according to the first speed increasing signal.

By adopting the technical scheme, the possibility of coal overflow is reduced by increasing the downstream conveying device again.

the downstream conveyor maintains the increased conveying speed for a duration t ₁ To discharge the coal accumulated in the coal bunker;

t ₁ the calculation formula of (c) is: t is t ₁ =

；

Wherein, when the first speed increasing signal is sent to the downstream conveying device based on the opening degree of the coal bunker feed opening to increase the conveying speed of the downstream conveying device, the timing is started, and when the second current coal flow is larger than the first current coal flow, the timing is stopped, and a first timing time t is obtained ₀ ；

Obtaining an initial coal flow rate Q of the downstream conveyor before sending a first speed increase signal to the downstream conveyor based on the opening of the bunker discharge opening to increase the conveying speed of the downstream conveyor ₀ In this example, the initial coal flow rate Q ₀ A first current coal flow rate and an initial coal flow rate Q of the upstream conveyor to send a first speed increasing signal to the downstream conveyor based on the opening of the bunker discharge opening to increase the conveying speed of the downstream conveyor by the coal flow rate of the downstream conveyor at a previous time ₀ Equal, since the upstream conveyor is unchanged, i.e., the first current coal flow rate is unchanged, the first current coal flow rate is equal to the initial coal flow rate Q ₀ Equal;

obtaining the blending coal flow Q before the first opening degree reducing signal is sent to the coal bunker discharge opening so as to enable the coal bunker discharge opening degree to be reduced and the coal bunker discharge opening degree is recovered to the initial state ₁ 。

By adopting the technical scheme, the duration t is calculated ₁ At t ₁ During the time, the downstream conveying device operates at the increased conveying speed, so that all the coal accumulated in the coal bunker during the coal blockage period is discharged, and the possibility of long-time accumulation of the coal in the coal bunker is reduced.

Optionally, the sending a first opening increasing signal to the bunker feed opening to increase the opening of the bunker feed opening, and sending a first speed increasing signal to the downstream conveying device based on the opening of the bunker feed opening to increase the conveying speed of the downstream conveying device includes:

sending a first opening increasing signal to the bunker feeding port to increase the opening of the bunker feeding port, acquiring a first current opening of the bunker feeding port, and acquiring a first bunker feeding flow corresponding to the first current opening;

a target conveyor speed of the downstream conveyor is calculated based on the first bunker discharge flow, and a first speed increase signal is sent to the downstream conveyor based on the target conveyor speed.

By adopting the technical scheme, the electronic equipment controls the opening of the coal bunker feed opening to be increased, then obtains the first current opening, obtains the corresponding first coal bunker feed flow according to the first current opening, and then calculates the target transmission speed based on the first coal bunker feed flow, so that the transmission speed of the downstream transmission device is controlled to be equal to the transmission speed.

Optionally, before the sending the first speed increasing signal to the downstream conveying device based on the target conveying speed, the method further includes:

determining whether the target transport speed is greater than a transport speed threshold of the downstream transport device;

if the target conveying speed is larger than the conveying speed threshold value of the downstream conveying device, sending a first stop signal to the coal bunker discharging opening to enable the coal bunker discharging opening to stop increasing the opening degree, sending a second stop signal to the upstream conveying device, sending a third stop signal to the downstream conveying device, and sending an alarm signal to give an alarm;

if the target transport speed is not greater than the transport speed threshold of the downstream transport device, then the step of sending a first speed increase signal to the downstream transport device based on the target transport speed is performed.

By adopting the technical scheme, whether the target conveying speed is greater than the conveying speed threshold of the downstream conveying device or not is judged, if the target conveying speed is greater than the speed threshold of the downstream conveying device, the upstream conveying device and the downstream conveying device are controlled to stop working, the coal bunker discharge opening is controlled to stop moving, meanwhile, an alarm is given out, and therefore workers are prompted and can process according to conditions.

In a second aspect, the present application provides a coal transfer control device based on a coal flow difference, which adopts the following technical solution:

a coal transfer control device based on a coal flow difference, comprising:

the first acquisition and analysis module is used for acquiring upstream image information of an upstream conveying device shot by an upstream camera and processing the upstream image information to obtain a first current coal flow;

the second acquisition and analysis module is used for acquiring downstream image information of the downstream conveying device shot by the downstream camera and processing the downstream image information to obtain a second current coal flow;

the judging module is used for judging whether the difference value between the first current coal flow and the second current coal flow is larger than a first coal blockage judging threshold value or not, and if yes, entering the sending module;

the sending module is used for sending a first opening increasing signal to the coal bunker feeding opening to enable the opening of the coal bunker feeding opening to be increased, and sending a first speed increasing signal to the downstream conveying device based on the opening of the coal bunker feeding opening to enable the conveying speed of the downstream conveying device to be increased.

In a third aspect, the present application provides an electronic device, which adopts the following technical solutions:

an electronic device, comprising: a memory and a processor, the memory having stored therein a computer program operable on the processor; the processor, when executing the computer program, implements the method for controlling coal delivery based on coal flow difference according to the first aspect.

In a fourth aspect, the present application provides a computer storage medium, which adopts the following technical solutions:

a computer readable storage medium storing a computer program that can be loaded by a processor and execute the method according to the first aspect.

Drawings

FIG. 1 is a schematic diagram of a coal delivery control method based on a coal flow difference in an embodiment of the present application.

FIG. 2 is a schematic diagram of a coal conveying control device based on coal flow difference in the embodiment of the present application.

Fig. 3 is a schematic diagram of an electronic device portion in an embodiment of the present application.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and a user skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present application.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a user of ordinary skill in the art without any creative effort based on the embodiments in the present application belong to the protection scope of the present application.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship, unless otherwise specified.

The present embodiment provides a coal flow difference-based coal conveyance control method that can be executed by an electronic device. The electronic equipment receives instructions input by various users and controls the transmission device according to the instructions, thereby realizing the control of the transmission device. And the coal bunker feed opening can be controlled, so that coal can be better conveyed.

The embodiment of the application discloses a coal conveying control method based on a coal flow difference. Referring to fig. 1, the main flow of a coal transfer control method based on a coal flow difference is described as follows (S100 to 400):

step S100, acquiring upstream image information of an upstream conveying device shot by an upstream camera, and processing the upstream image information to obtain a first current coal flow;

step S200, acquiring downstream image information of a downstream conveying device shot by a downstream camera, and processing the downstream image information to obtain a second current coal flow;

the upstream conveyor is located at the feed opening of the bunker, the downstream conveyor is located at the feed opening of the bunker, the upstream conveyor transports coal into the bunker, and the coal falls down from the bunker feed opening and onto the downstream conveyor. The upstream camera is located at the upstream conveyor for capturing image information of the upstream conveyor, and the downstream camera is located at the downstream conveyor for capturing image information of the downstream conveyor. The upstream conveying device and the downstream conveying device aim at two adjacent conveying devices of the same coal bunker, the upstream camera and the downstream camera are the same in principle, and also aim at two adjacent cameras of the same coal bunker, and when the two adjacent cameras of the same coal bunker normally work, the first current coal flow of the upstream conveying device, the blanking flow of a coal bunker blanking port and the second current coal flow of the downstream conveying device are equal.

In this embodiment, both the upstream conveyor and the downstream conveyor may be conveyor belts.

The electronic equipment acquires the upstream image information and the downstream image information and analyzes the upstream image information and the downstream image information, firstly, the sectional areas of the coal on the upstream conveying device and the downstream conveying device are identified and calculated, and then the coal flow value can be calculated according to the conveying speed of the conveying device.

The calculation formula is as follows: q =

；

After simplification, the following can be obtained: q = S × V formula (1);

wherein Q is a coal flow value; s is the sectional area of coal; v is the conveying speed of the conveying device; t is a unit time;

from the above equation, the coal flow value is related to the cross-sectional area of the coal on the conveyor and the conveying speed of the conveyor. For purposes of illustration herein, the coal flow value may be calculated in other manners. The first current coal flow rate and the second current coal flow rate are calculated by formula (1).

Step S300, judging whether the difference value between the first current coal flow and the second current coal flow is larger than a first coal blockage judging threshold value, if so, executing step S400;

step S400, a first opening increasing signal is sent to the coal bunker feeding opening to enable the opening of the coal bunker feeding opening to increase, and a first speed increasing signal is sent to the downstream conveying device based on the opening of the coal bunker feeding opening to enable the conveying speed of the downstream conveying device to increase.

When the electronic equipment judges that the difference value of the first current coal flow minus the second current coal flow is larger than the first coal blockage judgment threshold value, the electronic equipment judges that the coal blockage situation occurs, at the moment, the electronic equipment sends a first opening increasing signal to the coal bunker discharging opening so as to increase the opening of the coal bunker discharging opening, and sends a first speed increasing signal to the downstream conveying device based on the opening of the coal bunker discharging opening so as to increase the conveying speed of the downstream conveying device. The openness of the coal bunker feed opening is increased, the possibility of blockage at the coal bunker feed opening can be reduced, and the conveying speed of the downstream conveying device is increased, so that the downstream conveying device can timely convey away coal falling from the coal bunker feed opening, and the possibility of coal overflow is reduced.

It should be noted that the electronic device sends the first opening increasing signal to the bunker discharge opening as a continuous transmission, that is, the bunker discharge opening continuously increases the opening. Sending the first speed increasing signal to the downstream conveyor based on the opening of the bunker feed opening is also continuous, that is, the conveying speed of the downstream conveyor is continuously increased while the opening of the bunker feed opening is continuously increased. The aperture of coal bunker feed opening is the corresponding relation with conveyer's transfer rate, and this corresponding relation can be set for and change by people to make the corresponding relation can satisfy actual production demand, in this embodiment, the corresponding relation can be obtained by actual experiment.

As an alternative implementation manner of the embodiment of the present application, a method for sending a first opening increasing signal to a bunker discharge opening to increase an opening of the bunker discharge opening and sending a first speed increasing signal to a downstream conveyor based on the opening of the bunker discharge opening to increase a conveying speed of the downstream conveyor includes: sending a first opening increasing signal to a bunker feeding port to increase the opening of the bunker feeding port, acquiring a first current opening of the bunker feeding port, and acquiring a first bunker feeding flow corresponding to the first current opening; a target conveying speed of the downstream conveying device is calculated based on the blanking flow of the first coal bunker, and a first speed increasing signal is sent to the downstream conveying device based on the target conveying speed.

The method comprises the steps of obtaining the opening degree of a coal bunker feeding opening in real time, enabling each opening degree of the coal bunker feeding opening to correspond to a first coal bunker feeding flow, presetting the corresponding relation between the opening degree and the first coal bunker feeding flow in electronic equipment, and obtaining the corresponding first coal bunker feeding flow based on the opening degree. Calculating the target conveying speed of the downstream conveying device based on the blanking flow of the coal bunker, calculating by using a formula (1), enabling Q in the formula (1) to be equal to the blanking flow of the first coal bunker, then obtaining the sectional area of coal on the upstream conveying device by the electronic equipment, enabling S in the formula (1) to be equal to the sectional area of the coal on the upstream conveying device, and calculating the speed V, wherein the calculated V is the target conveying speed of the downstream conveying device. A first speed increasing signal is sent to the downstream conveyor based on the calculated target conveying speed, thereby increasing the conveying speed of the downstream conveyor to the target conveying speed. The conveying speed of the downstream conveying device changes with the opening degree of the coal bunker feed opening in real time.

The corresponding relation between the opening and the blanking flow of the coal bunker can be obtained through experiments, and can also be obtained by consulting at equipment suppliers.

Specifically, before sending the first speed increase signal to the downstream transport device based on the target transport speed, the method further includes: determining whether the target transport speed is greater than a transport speed threshold of the downstream transport device; if the target conveying speed is greater than the conveying speed threshold of the downstream conveying device, sending a first stop signal to the coal bunker feeding port to enable the coal bunker feeding port to stop increasing the opening, sending a second stop signal to the upstream conveying device, sending a third stop signal to the downstream conveying device, and sending an alarm signal to give an alarm; if the target transport speed is not greater than the transport speed threshold of the downstream transport device, a step of sending a first speed increase signal to the downstream transport device based on the target transport speed is performed.

Before sending a first speed increasing signal to a downstream conveying device based on a target conveying speed, judging whether the target conveying speed is larger than a conveying speed threshold value of the downstream conveying device, if the target conveying speed is larger than the conveying speed threshold value of the downstream conveying device, the situation that even if the conveying speed of the downstream conveying device is adjusted to the maximum value is explained, in the situation, even if the coal bunker blanking opening is continuously enlarged to solve the coal blockage situation, the possibility of coal overflow is existed, so at the moment, the electronic equipment sends a first stopping signal to stop increasing the opening degree of the coal bunker blanking opening, and stops the operation of the upstream conveying device and the downstream conveying device, sends an alarm signal to alarm to prompt staff, and the staff carries out processing. If the target transport speed is not greater than the transport speed threshold of the downstream transport device, continuing to perform the step of sending a first speed increase signal to the downstream transport device based on the target transport speed.

In this embodiment, after the opening of the bunker discharge opening sends the first speed increasing signal to the downstream conveying device to increase the conveying speed of the downstream conveying device, the method further includes the following steps:

step a, acquiring upstream image information of an upstream conveying device shot by an upstream camera, and processing the upstream image information to obtain a first current coal flow;

and b, acquiring downstream image information of the downstream conveying device shot by the downstream camera, and processing the downstream image information to obtain a second current coal flow.

In step a and step b, the obtaining method is the same as that in step S100 and step S200, and is not described herein again.

Step c, judging whether the second current coal flow is larger than the first current coal flow; if the second current coal flow is greater than the first current coal flow, sending a first opening reduction signal to the bunker discharge opening to reduce the bunker discharge opening, and sending a first speed reduction signal to the downstream conveyor based on the opening of the bunker discharge opening to reduce the conveying speed of the downstream conveyor; and if the second current coal flow is not greater than the first current coal flow, sending a first opening increasing signal to the bunker feed opening to increase the opening of the bunker feed opening, and sending a first speed increasing signal to the downstream conveyor based on the opening of the bunker feed opening to increase the conveying speed of the downstream conveyor.

The following is a detailed description of determining whether the second current coal flow rate is greater than the first current coal flow rate:

because the opening degree of the feed opening of the coal bunker is continuously increased after the coal blockage is judged, and the upstream conveying device continuously works at the moment, the coal can be accumulated in the coal bunker due to the coal blockage, if the coal blockage condition is eliminated, the second current coal flow of the downstream conveying device is larger than the first current coal flow of the upstream conveying device, and therefore whether the second current coal flow is larger than the first current coal flow or not is judged here, namely whether the coal blockage condition is eliminated or not is judged.

And if the second current coal flow is larger than the first current coal flow, the electronic equipment sends a first opening reduction signal to the coal bunker discharge opening, so that the opening of the coal bunker discharge opening is reduced. The electronic device transmits a first speed reduction signal to the downstream transport device, thereby reducing the transport speed of the downstream device. The electronic equipment continuously sends a first opening reduction signal to the coal bunker discharge opening, and the opening of the coal bunker discharge opening is continuously reduced. The electronic device continues to send the first speed reduction signal to the downstream transport device, and the transport speed of the downstream transport device continues to decrease.

And if the second current coal flow is not greater than the first current coal flow, determining that the coal blockage condition is not eliminated, and at the moment, because the coal blockage condition is not eliminated, the electronic equipment needs to continuously control the opening of the feed opening of the coal bunker to increase, and then control the transmission speed of the downstream transmission device to increase based on the opening of the feed opening of the coal bunker.

In the embodiment, after sending a first opening degree decreasing signal to the bunker lower opening to decrease the bunker lower opening and sending a first speed decreasing signal to the downstream conveyor based on the first opening degree decreasing signal to decrease the conveying speed of the downstream conveyor, the method includes: acquiring a first current opening degree of a feed opening of a coal bunker, and acquiring a first coal bunker feed flow corresponding to the first current opening degree; acquiring downstream image information of a downstream conveying device shot by a downstream camera, and processing the downstream image information to obtain a second current coal flow; judging whether the difference value between the blanking flow of the first coal bunker and the second current coal flow is greater than a second coal blockage judgment threshold value or not; and if the difference value between the first coal bunker blanking flow and the second current coal flow is larger than the second coal blockage judgment threshold value, sending a first opening increasing signal to the coal bunker blanking port to increase the opening of the coal bunker blanking port, and sending a first speed increasing signal to the downstream conveying device based on the opening of the coal bunker blanking port to increase the conveying speed of the downstream conveying device.

If the difference value between the first coal bunker blanking flow and the second current coal flow is not greater than the second coal blockage judgment threshold value, judging whether the first coal bunker blanking flow is equal to the initial blanking flow; if the blanking flow of the first coal bunker is equal to the initial blanking flow, stopping sending the first speed reduction signal; and if the first bunker discharge flow is larger than the initial discharge flow, sending a first opening reduction signal to the bunker discharge opening to reduce the bunker discharge opening, and sending a first speed reduction signal to the downstream conveying device based on the first opening reduction signal to reduce the conveying speed of the downstream conveying device.

And judging whether the difference value between the blanking flow of the first coal bunker and the second current coal flow is greater than a second coal blockage judging threshold value or not, wherein the judgment process is to judge whether coal blockage occurs in the process of reducing the opening of the coal bunker. Because in the reducing process, if coal blockage occurs, the second current coal flow is smaller than the blanking flow of the first coal bunker, and the second coal blockage judging threshold value is used for eliminating the influence of coal flow fluctuation. The initial flow is the bunker discharge flow of the bunker when no coal blockage is judged, namely the bunker discharge flow of the bunker under the normal condition, and the coal blockage condition or the coal overflow condition belong to the abnormal condition.

The method comprises the steps of acquiring a first current opening of a feed opening of a coal bunker in real time in the process of reducing the feed opening of the coal bunker, acquiring corresponding feed flow of the first coal bunker according to the first current opening, acquiring a second current coal flow of a downstream conveying device in real time by an electronic device, judging whether the second current coal flow subtracted from the feed flow of the first coal bunker is larger than a second coal blockage judging threshold value or not, judging whether the coal blockage occurs or not, namely judging whether the coal blockage occurs again in the process of reducing the opening of the feed opening of the coal bunker, if the second current coal flow subtracted from the feed flow of the first coal bunker is larger than the second coal blockage judging threshold value, judging that the coal is blocked, sending a first opening increasing signal to the feed opening of the coal bunker to increase the opening of the feed opening of the coal bunker, sending a first speed increasing signal to the downstream conveying device based on the opening of the feed opening of the coal bunker to increase the conveying speed of the downstream conveying device, i.e., increasing the opening of the bunker discharge opening to reduce the likelihood of coal plugging, and increasing the delivery rate of the downstream conveyor to reduce the likelihood of coal spillage.

And if the second current coal flow subtracted from the first coal bunker discharge flow is not greater than the second coal blockage judgment threshold, judging whether the first coal bunker discharge flow is equal to the initial discharge flow. If the blanking flow of the first coal bunker is equal to the initial blanking flow, the electronic equipment stops sending the first speed reduction signal, so that the opening degree of the blanking port of the coal bunker is not reduced any more, and the opening degree of the blanking port of the coal bunker is restored to the initial state at the moment, namely the opening degree of the blanking port of the coal bunker is restored to the size of the original working state; if the blanking flow of the first coal bunker is larger than the initial blanking flow, the electronic equipment continuously controls the opening of the blanking port of the coal bunker to be reduced, and controls the conveying speed of the downstream conveying device to be reduced.

The initial state is the opening degree of the coal bunker feeding opening during normal work, namely the state of the electronic equipment when the opening degree of the coal bunker feeding opening and the transmission speed of the downstream transmission device are not controlled to change. The initial blanking flow is the blanking flow when the blanking port of the coal bunker normally works, namely the blanking flow of the coal bunker when the opening of the blanking port of the coal bunker is not controlled by the electronic equipment to change.

As another alternative of this embodiment, before sending the first opening decreasing signal to the bunker discharge opening to decrease the bunker discharge opening and sending the first speed decreasing signal to the downstream conveyor based on the opening of the bunker discharge opening to decrease the conveying speed of the downstream conveyor, when the second current coal flow rate is greater than the first current coal flow rate, the method further includes: the downstream transport device sends a first speed increasing signal to the downstream transport device, and the downstream transport device increases the transport speed again in accordance with the first speed increasing signal.

The electronic equipment sends a first speed increasing signal to the downstream conveying device, so that the conveying speed of the downstream conveying device is increased again, the possibility of coal overflow after the coal blockage situation is solved is reduced, and the opening degree of the coal bunker discharge opening is larger than that during normal operation, so that the opening degree is increased again when the conveying speed is met, and the possibility of coal overflow can be reduced. The portion of the downstream conveyor that is added here can be set artificially, i.e. the speed at which the downstream conveyor is increased again is a constant value here.

Another way is that the electronic device calculates the increased portion by itself, specifically, sending a first speed increasing signal to the downstream transmitting device, and the downstream transmitting device increases the transmission speed again according to the first speed increasing signal, including: obtaining a current-time opening value of the bunker feed opening at the previous time by sending a first opening reduction signal to the bunker feed opening so as to reduce the bunker feed opening, and judging the opening grade of the current-time opening value, wherein the opening grade comprises a first-grade opening, a second-grade opening and a third-grade opening; when the opening degree at the current moment belongs to the first-level opening degree, a first-level speed increasing signal is sent to the existing conveying device, and so on, and the description is omitted here. The downstream transmitting device increases the signal at a speed lower than the speed at which the downstream transmitting device increases the signal at the second gradation speed according to the first gradation speed increase signal, and the speed at which the downstream transmitting device increases the signal at the second gradation speed is lower than the speed at which the downstream transmitting device increases the signal at the third gradation speed. The maximum value of the first grade opening degree is smaller than the minimum value of the second grade opening degree, and the maximum value of the second grade opening degree is smaller than the minimum value of the third grade opening degree.

For example, the first level opening degree is in the range of [0-5], the second level opening degree is in the range of (5-10 ], the third level opening degree is in the range of (10- ∞), that is, the range of the first level opening degree is zero to five, the range of the second level opening degree is greater than five and less than or equal to ten, and the range of the third level opening degree is greater than ten, the first level speed increasing signal can increase the downstream transmission device by a transmission speed of five, the second level speed increasing signal can increase the downstream transmission device by a transmission speed of ten, the third level speed increasing signal can increase the downstream transmission device by a transmission speed of fifteen, if the current time opening degree value is in the range of the second level opening degree, the second level speed increasing signal is transmitted to the downstream transmission device to increase the downstream transmission device by a transmission speed of ten, the specified values are only for better illustration, and the actual use hours values can be adjusted.

In this embodiment, the first opening degree reduction signal is sent to the bunker lower opening to reduce the bunker lower opening, and the bunker lower opening degree is reducedBefore the opening degree of the coal bunker feed opening sends a first speed reduction signal to the downstream conveying device to reduce the conveying speed of the downstream conveying device, the method further comprises the following steps: the downstream conveyor maintains the increased conveying speed for a duration t ₁ For discharging the coal stocked in the coal bunker;

the calculation formula is as follows: q ₁ *t ₁ =Q ₀ *t ₁ +Q ₀ *t ₀ ；

After conversion: t is t ₁ =

Formula (2);

wherein, when a first speed increasing signal is sent to the downstream conveying device based on the opening degree of the coal bunker feed opening to increase the conveying speed of the downstream conveying device, the timing is started, and when the second current coal flow is larger than the first current coal flow, the timing is stopped, and the first timing time t is obtained ₀ (ii) a Obtaining an initial coal flow rate Q before sending a first speed increasing signal to a downstream conveyor to increase the conveying speed of the downstream conveyor based on the opening of the bunker discharge opening ₀ First current coal flow rate and initial coal flow rate Q of upstream conveyor ₀ Equal; obtaining a blended coal flow Q after sending a first speed increase signal to a downstream conveyor based on the opening of the bunker discharge to increase the conveying speed of the downstream conveyor ₁ 。

The purpose of the above process is: the coal stockpiled in the coal bunker during the coal blockage period is disposed, so that the possibility of long-time coal stockpiled in the coal bunker is reduced. By means of the calculation according to equation (2), the time required for the downstream conveyor to discharge all the coal accumulated in the bunker after increasing the conveying speed, i.e. the time duration t, can be determined ₁ . Maintaining increased downstream transport speed for a duration t ₁ At t ₁ Discharging all the stored coal in the coal bunker in the coal blocking period within the time, and passing through t ₁ After the time, there is no coal stockpiled in the bunker.

As an optional implementation manner of the embodiment of the present application, before sending the first opening increasing signal to the bunker feed opening to increase the opening of the bunker feed opening, the method further includes: starting timing and obtaining second timing time when the difference value between the first current coal flow and the second current coal flow is larger than the first coal blockage judgment threshold value; judging whether the second timing time is greater than a time threshold value; and if the second timing time is greater than the time threshold, sending a first opening increasing signal to the bunker discharge opening to increase the opening of the bunker discharge opening, and sending a first speed increasing signal to the downstream conveying device based on the opening of the bunker discharge opening to increase the conveying speed of the downstream conveying device.

Influence caused by coal flow fluctuation is eliminated by judging whether the second timing time is greater than a time threshold value, and time delay is set, so that the possibility of frequent change of the opening of a coal bunker discharge opening caused by coal flow fluctuation is reduced, and the coal conveying process is more stable. Wherein the fluctuation of the coal flow rate may be caused by a short coal blockage, may be caused by the difference between the actual conveying speed of the first conveying device and the preset conveying speed, or may be caused by the difference between the actual conveying speed of the second conveying device and the preset conveying speed, and the fluctuation is short and does not need to be adjusted.

Wherein, the time threshold value can be set artificially.

As an alternative to this embodiment, a first actual conveying speed of the upstream conveying device is obtained; acquiring a second actual conveying speed of the downstream conveying device; judging whether the first actual conveying speed is equal to the preset conveying speed of the upstream conveying device or not; if not, adjusting the upstream conveying device to enable the first actual conveying speed to be equal to the preset conveying speed of the upstream conveying device; judging whether the second actual conveying speed is equal to the preset conveying speed of the downstream conveying device or not; if not, the downstream conveyor is adjusted so that the second actual conveyance speed is equal to the also preset conveyance speed of the downstream conveyor.

And acquiring a first actual conveying speed of the upstream conveying device, acquiring a second actual conveying speed of the downstream conveying device, judging whether the first actual conveying speed and the second actual conveying speed are equal to the corresponding preset conveying speed, and if not, adjusting by the electronic equipment so that the first actual conveying speed is equal to the preset conveying speed of the upstream conveying device and the second actual conveying speed is equal to the preset conveying speed of the downstream conveying device. Whether the actual conveying speed is equal to the preset conveying speed or not is detected, and the actual conveying speed is adjusted in real time, so that the occurrence of coal blockage or coal overflow can be reduced.

For example, the following steps are carried out: if the first actual conveying speed is higher than the preset conveying speed of the upstream conveying device, the coal is accumulated in the coal bunker, and the coal blockage is easily caused at the moment; if the second actual conveyance rate is less than the preset conveyance rate of the downstream conveyor, a coal spill condition is likely to occur. The above cases are examples, and other cases exist, which are not described herein again. Therefore, when the actual conveying speed is equal to the preset conveying speed, the occurrence of coal blockage or coal overflow can be reduced.

The first actual speed is not equal to the preset conveying speed of the upstream conveying device, and may be due to inaccurate adjustment of the control program, or due to external friction, for various reasons, which are not described herein.

The implementation principle of the coal conveying control method based on the coal flow difference in the embodiment of the application is as follows: the method comprises the steps of obtaining corresponding upstream image information and downstream image information by using an upstream camera and a downstream camera, analyzing the upstream image information and the downstream image information to obtain a first current coal flow of an upstream conveying device and a second current coal flow of a downstream conveying device, judging whether the first current coal flow minus the second current coal flow is larger than a first coal blockage judging threshold value, if so, judging that the coal is blocked, sending a first opening increasing signal to a coal bunker discharging opening by electronic equipment to increase the opening of the coal bunker discharging opening, and sending a first speed increasing signal to the downstream conveying device based on the opening of the coal bunker discharging opening to increase the conveying speed of the downstream conveying device.

Fig. 2 is a block diagram of a coal conveying control device 500 based on a coal flow difference according to an embodiment of the present application. As shown in fig. 2, the coal transfer control device 500 based on the coal flow difference includes:

a first obtaining and analyzing module 501, configured to obtain upstream image information of an upstream conveying device captured by an upstream camera, and process the upstream image information to obtain a first current coal flow rate;

a second obtaining and analyzing module 502, configured to obtain downstream image information of the downstream conveying device captured by the downstream camera, and process the downstream image information to obtain a second current coal flow rate;

a judging module 503, configured to judge whether a difference between the first current coal flow and the second current coal flow is greater than a first coal blockage judging threshold, and if so, enter the sending module;

a sending module 504, configured to send a first opening increase signal to the bunker feed opening to increase the opening of the bunker feed opening, and send a first speed increase signal to the downstream conveyor based on the opening of the bunker feed opening to increase the conveying speed of the downstream conveyor.

As an optional implementation manner of this embodiment, the sending module 504 includes:

the first obtaining submodule is used for sending a first opening increasing signal to the bunker feed opening to increase the opening of the bunker feed opening, obtaining a first current opening of the bunker feed opening and obtaining a first bunker feed flow corresponding to the first current opening;

and the first sending submodule is used for calculating a target conveying speed of the downstream conveying device based on the blanking flow of the first coal bunker and sending a first speed increasing signal to the downstream conveying device based on the target conveying speed.

In this alternative embodiment, the coal transfer control device 500 based on the coal flow difference further includes:

a first judgment sub-module for judging whether the target conveying speed is greater than a conveying speed threshold of the downstream conveying device before sending the first speed increasing signal to the downstream conveying device based on the target conveying speed;

the second sending submodule is used for sending a first stop signal to the coal bunker feeding port to enable the coal bunker feeding port to stop increasing the opening degree if the target conveying speed is larger than the conveying speed threshold of the downstream conveying device, sending a second stop signal to the upstream conveying device, sending a third stop signal to the downstream conveying device and sending an alarm signal to give an alarm;

and a third sending submodule for executing the step of sending the first speed increasing signal to the downstream conveyor based on the target conveying speed if the target conveying speed is not greater than the conveying speed threshold of the downstream conveyor.

As an optional implementation manner of this embodiment, the coal transfer control device 500 based on the coal flow difference further includes:

the third acquisition and analysis module is used for acquiring upstream image information of the upstream conveying device shot by an upstream camera after a first speed increasing signal is sent to the downstream conveying device by the opening degree of the coal bunker discharge opening so as to increase the conveying speed of the downstream conveying device, and processing the upstream image information to obtain a first current coal flow;

the fourth acquisition and analysis module is used for acquiring downstream image information of the downstream conveying device shot by the downstream camera and processing the downstream image information to obtain a second current coal flow;

the second judgment submodule is used for judging whether the second current coal flow is larger than the first current coal flow; if the second current coal flow is greater than the first current coal flow, sending a first opening reduction signal to the bunker discharge opening to reduce the bunker discharge opening, and sending a first speed reduction signal to the downstream conveyor based on the opening of the bunker discharge opening to reduce the conveying speed of the downstream conveyor; and if the second current coal flow is not greater than the first current coal flow, sending a first opening increasing signal to the bunker feed opening to increase the opening of the bunker feed opening, and sending a first speed increasing signal to the downstream conveyor based on the opening of the bunker feed opening to increase the conveying speed of the downstream conveyor.

the fifth acquiring and analyzing module is used for acquiring a first current opening of the bunker discharge opening and acquiring a first bunker discharge flow corresponding to the first current opening after sending a first opening reducing signal to the bunker discharge opening to reduce the bunker discharge opening and sending a first speed reducing signal to the downstream conveying device based on the opening of the bunker discharge opening to reduce the conveying speed of the downstream conveying device;

the sixth acquisition and analysis module is used for acquiring downstream image information of the downstream conveying device shot by the downstream camera and processing the downstream image information to obtain a second current coal flow;

the third judgment submodule is used for judging whether the difference value between the blanking flow of the first coal bunker and the second current coal flow is larger than a second coal blockage judgment threshold value or not; if the difference value between the first coal bunker blanking flow and the second current coal flow is larger than the second coal blockage judgment threshold value, sending a first opening increasing signal to a coal bunker blanking port to increase the opening of the coal bunker blanking port, and sending a first speed increasing signal to a downstream conveying device based on the opening of the coal bunker blanking port to increase the conveying speed of the downstream conveying device; if the difference value between the blanking flow of the first coal bunker and the second current coal flow is not greater than the second coal blockage judgment threshold value, entering a third judgment sub-module;

the fourth judgment submodule is used for judging whether the blanking flow of the first coal bunker is equal to the initial blanking flow; if the blanking flow of the first coal bunker is equal to the initial blanking flow, stopping sending the first speed reduction signal; and if the blanking flow of the first coal bunker is larger than the initial blanking flow, sending a first opening reduction signal to the coal bunker blanking opening to reduce the coal bunker blanking opening, and sending a first speed reduction signal to the downstream conveying device based on the opening of the coal bunker blanking opening to reduce the conveying speed of the downstream conveying device.

the fourth sending submodule, configured to, before sending the first opening reduction signal to the bunker discharge opening to reduce the bunker discharge opening, and sending the first speed reduction signal to the downstream conveyor based on the opening of the bunker discharge opening to reduce the conveying speed of the downstream conveyor, further include: the downstream transport device sends a first speed increasing signal to the downstream transport device, and the downstream transport device increases the transport speed again in accordance with the first speed increasing signal.

As an alternative implementation manner of the embodiment, the coal transfer control device 500 based on the coal flow difference further includes:

a calculation module to maintain the increased transport speed for a duration t before sending a first opening decrease signal to the bunker discharge opening to decrease the bunker discharge opening and sending a first speed decrease signal to the downstream transport based on the opening of the bunker discharge opening to decrease the transport speed of the downstream transport, the downstream transport maintaining the increased transport speed for a duration t ₁ To discharge the coal accumulated in the coal bunker; t is t ₁ Is calculated as t ₁ =

；

The first timing module is used for starting timing when a first speed increasing signal is sent to the downstream conveying device based on the opening degree of the coal bunker feed opening so that the conveying speed of the downstream conveying device is increased, stopping timing when the second current coal flow is larger than the first current coal flow, and obtaining first timing time t _0；

A second obtaining submodule for obtaining an initial coal flow rate Q of the downstream conveyor before sending the first speed increasing signal to the downstream conveyor to increase the conveying speed of the downstream conveyor based on the opening degree of the bunker discharge opening ₀ First current coal flow rate and initial coal flow rate Q of upstream conveyor ₀ Equal;

a third obtaining submodule for obtaining a blending coal flow Q before the first opening degree reducing signal is sent to the coal bunker feed opening so as to reduce the opening degree of the coal bunker feed opening and restore the coal bunker feed opening to the initial state ₁ 。

The functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part. The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing an electronic device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application.

Fig. 3 is a block diagram of an electronic device 600 according to an embodiment of the present disclosure. The electronic device 600 may be a mobile phone, a tablet computer, a PC, a server, or the like. As shown in fig. 3, electronic device 600 includes memory 601, processor 602, and communication bus 603; the memory, processor 602 are connected by a communication bus 603. The memory 601 stores thereon a computer program that can be loaded by the processor 602 and executes the coal flow difference-based coal delivery control method provided in the above-described embodiments.

The memory 601 may be used to store instructions, programs, code, sets of codes, or sets of instructions. The memory 601 may include a storage program area and a storage data area, wherein the storage program area may store instructions for implementing an operating system, instructions for at least one function, instructions for implementing the coal flow difference-based coal transfer control method provided by the above-described embodiment, and the like; the storage data area may store data and the like involved in the coal flow difference-based coal conveyance control method provided in the above-described embodiment.

Processor 602 may include one or more processing cores. The processor 602 executes various functions of the present application and processes data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 601 to invoke data stored in the memory 601. The Processor 602 may be at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a Central Processing Unit (CPU), a controller, a microcontroller, and a microprocessor. It is understood that the electronic devices for implementing the functions of the processor 602 may be other devices, and the embodiments of the present application are not limited in particular.

Communication bus 603 may include a path that conveys information between the aforementioned components. The communication bus 603 may be a PCI (Peripheral Component Interconnect) bus, an EISA (Extended Industry Standard Architecture) bus, or the like. The communication bus 603 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 3, but this does not indicate only one bus or one type of bus.

Embodiments of the present application provide a computer storage medium storing a computer program that can be loaded by a processor and execute the coal flow difference-based coal conveyance control method provided in the above embodiments.

In this embodiment, the computer storage medium may be a tangible device that retains and stores instructions for use by an instruction execution device. The computer storage medium may be, but is not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any combination of the foregoing. In particular, the computer storage medium may be a portable computer diskette, a hard disk, a U-disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a podium random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, an optical disk, a magnetic disk, a mechanical coding device, and any combination thereof.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is a preferred embodiment of the present application and is not intended to limit the scope of the application in any way, and any features disclosed in this specification (including the abstract and drawings) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

Claims

1. A coal conveying control method based on coal flow difference is characterized by comprising the following steps:

judging whether the difference value between the first current coal flow and the second current coal flow is greater than a first coal blockage judgment threshold value or not;

2. The coal flow difference-based coal conveying control method according to claim 1, wherein after the opening degree of the coal bunker discharge opening sends a first speed increasing signal to the downstream conveying device to increase the conveying speed of the downstream conveying device, the method further comprises the following steps:

if the second current coal flow is greater than the first current coal flow, sending a first opening reduction signal to the bunker discharge opening to reduce the opening of the bunker discharge opening, and sending a first speed reduction signal to the downstream conveyor based on the opening of the bunker discharge opening to reduce the conveying speed of the downstream conveyor;

3. The coal flow difference-based coal conveying control method according to claim 2, wherein after sending a first opening degree reduction signal to the bunker discharge opening to reduce the bunker discharge opening and sending a first speed reduction signal to the downstream conveying device based on the opening degree of the bunker discharge opening to reduce the conveying speed of the downstream conveying device, the method comprises:

judging whether the difference value between the blanking flow of the first coal bunker and the second current coal flow is greater than a second coal blockage judging threshold value or not;

4. The coal flow difference-based coal conveying control method according to claim 2, before sending a first opening degree reduction signal to the bunker discharge opening to reduce the bunker discharge opening and sending a first speed reduction signal to the downstream conveying device based on the opening degree of the bunker discharge opening to reduce the conveying speed of the downstream conveying device, further comprising:

5. The coal flow difference-based coal conveying control method according to claim 2 or 4, characterized by, before sending the first opening degree reduction signal to the bunker discharge opening to reduce the bunker discharge opening and sending the first speed reduction signal to the downstream conveying device based on the opening degree of the bunker discharge opening to reduce the conveying speed of the downstream conveying device, further comprising:

the downstream conveyor maintains the increased conveying speed for a duration t ₁ To discharge the coal stocked in the coal bunker;

t ₁ the calculation formula of (2) is as follows: t is t ₁ =

；

Obtaining an initial coal flow rate Q of the downstream conveyor before sending a first speed increase signal to the downstream conveyor based on the opening of the bunker discharge opening to increase the conveying speed of the downstream conveyor ₀ First current coal flow rate and initial coal flow rate Q of upstream conveyor ₀ Equal;

obtaining the blending coal flow Q before the first opening degree reducing signal is sent to the coal bunker discharge opening so that the opening degree of the coal bunker discharge opening is reduced and the coal bunker discharge opening is recovered to the initial state ₁ 。

6. The coal flow difference-based coal conveying control method according to claim 1, wherein the sending a first opening increasing signal to a bunker discharge opening to increase the opening of the bunker discharge opening and sending a first speed increasing signal to the downstream conveying device based on the opening of the bunker discharge opening to increase the conveying speed of the downstream conveying device comprises:

7. The method of claim 6, further comprising, before sending a first speed increase signal to the downstream conveyor based on the target conveyor speed:

8. A coal transfer control device based on a coal flow difference, comprising:

9. An electronic device, comprising: a memory and a processor, the memory having stored therein a computer program operable on the processor; the processor, when executing the computer program, implements the coal flow difference-based coal delivery control method of any one of claims 1-7.

10. A computer-readable storage medium storing a computer program that can be loaded by a processor and executes a method for controlling coal delivery based on a coal flow difference according to any one of claims 1 to 7.