Method and system applied to speed redundancy measurement of coal feeder

Abstract

The invention discloses a method and system applied to speed redundancy measurement of a coal feeder, and belongs to the technical field of speed measurement redundancy, and the method comprises the steps that a server obtains the reading of a coal feeder sensor to obtain first rotating speed information and second rotating speed information; the server judges whether the first rotating speed information and the second rotating speed information are abnormal or not according to a preset rotating speed information difference threshold value; the server obtains conveyor belt weight information and target production data of the coal feeder and judges abnormal data; the server obtains rotation speed information of the conveyor belt according to the abnormal data and preset weight information to obtain fourth rotation speed information; the server adjusts the rotating speed of the coal feeder conveying belt according to the fourth rotating speed information. According to the invention, the accuracy of abnormal judgment of the first rotating speed information and the second rotating speed information by the server is improved, so that the accuracy of speed redundancy measurement of the coal feeder is improved; the accuracy of the obtained rotating speed of the transmission belt gear of the coal feeder is improved, so that the accuracy of speed redundancy measurement of the coal feeder is improved.

Description

Technical Field

[0001] The invention relates to the technical field of speed measurement redundancy, and in particular to a method and system for redundant speed measurement of a coal feeder. Background Art

[0002] The coal entering the furnace of a thermal power plant is measured by a weighing coal feeder, weighed and fed into the coal mill for grinding, and then fed into the furnace by the air supply system (primary fan, air supply fan). The weighing coal feeder is usually an electronic belt scale with a three-level measurement standard, including: a speed sensor detects the belt speed and feeds it into a weighing display (integral operator); a weighing sensor detects the weight of the material on the belt and feeds it into a weighing display (integral operator). The weighing display first receives the weight signal for analog-to-digital conversion, and then integrates the weight signal and speed signal to obtain the cumulative total amount of material and the instantaneous flow rate.

[0003] The weighing coal feeder usually installs a speed sensor on the edge of the driving drum to detect the belt speed. The problem is that the speed probe is installed at the end of the driving drum, which causes large vibrations, affecting the detection of the motor speed signal and the accuracy of coal quantity measurement. Since the motor speed is an important parameter for calculating the coal feeding rate, the stability of the motor speed directly affects the stability of the coal feeder operation. When the speed signal is lost, the coal feeder will trip immediately. Therefore, we have added dual speed measurement redundant switching to this signal to make the coal feeder operation more stable. Summary of the invention

[0004] In view of the above existing problems, the purpose of the present invention is to ensure the accuracy and reliability of the conveyor belt speed, and timely discover and handle the speed abnormality by real-time monitoring and comparing the speed information difference of two sensors at different positions with the preset threshold, and monitoring the weight change of the conveyor belt with the target production data, so as to optimize the operation efficiency of the coal feeder and ensure the stability and safety of coal supply. This method solves the specific technical problems of accurately judging the speed information abnormality, real-time monitoring of the conveyor belt operation status, calculating the reasonable speed information under abnormal conditions, safely and smoothly adjusting the conveyor belt speed, and generating early warning information to ensure the continuity and safety of the production line.

[0005] In order to solve the above technical problems, a method for redundant measurement of coal feeder speed is proposed, including:

[0006] The server obtains the reading of the coal feeder sensor to obtain the first speed information and the second speed information; the server determines whether there is an abnormality between the first speed information and the second speed information according to a preset speed information difference threshold; the server obtains the conveyor belt weight information and the target production data of the coal feeder, and determines the abnormal data;

[0007] The server obtains the speed information of the conveyor belt according to the abnormal data and the preset weight information to obtain the fourth speed information; the server adjusts the speed of the coal feeder conveyor belt according to the fourth speed information.

[0008] As a preferred solution of the method for redundant speed measurement of a coal feeder according to the present invention, wherein: the first speed information and the second speed information include: the server obtains readings of a first speed information sensor and a second speed information sensor of the coal feeder to obtain the first speed information and the second speed information, and the first speed information sensor and the second speed information sensor are installed at different positions;

[0009] The server receives readings uploaded by the first rotation speed information sensor and the second rotation speed information sensor through a data bus connected to the first rotation speed information sensor and the second rotation speed information sensor;

[0010] The conveyor belt weight information includes the conveyor belt weight information obtained by the server by obtaining the reading of the pressure sensor arranged under the conveyor belt;

[0011] The target production data includes the weight of coal required to complete the target production task obtained by the server through the target production task, thereby obtaining the target production data.

[0012] As a preferred solution of the method for redundant speed measurement of a coal feeder according to the present invention, wherein: whether the first speed information and the second speed information are abnormal comprises: the server calculates the difference between the first speed information and the second speed information according to the first speed information and the second speed information to obtain a first difference;

[0013] Determine whether the first difference is less than a preset speed information difference threshold:

[0014] When the first difference is less than the preset first speed information difference threshold, it indicates that there is no abnormality between the first speed information and the second speed information;

[0015] When the first difference is greater than or equal to a preset rotation speed information difference threshold, it indicates that there is an abnormality between the first rotation speed information and the second rotation speed information.

[0016] As a preferred solution of the method for redundant measurement of coal feeder speed described in the present invention, wherein: the abnormal data determination includes the server acquiring first conveyor belt weight information and second conveyor belt weight information according to conveyor belt weight information;

[0017] The second conveyor belt weight information is the conveyor belt weight information after a preset time interval of the first conveyor belt weight information;

[0018] The server obtains the weight information change rate of the conveyor belt according to the first conveyor belt weight information and the second conveyor belt weight information to obtain a first change rate;

[0019] The server determines whether the first change rate is greater than a set change rate threshold;

[0020] When the first change rate is greater than the change rate threshold, the first rotation speed information is abnormal, and the server determines the first rotation speed information as first abnormal data;

[0021] When the first change rate is less than or equal to the change rate threshold, there is no abnormality in the first speed information;

[0022] If there is no abnormality in the first speed information, the server performs abnormality determination based on the second speed information of the target production data, and the server converts the target production data into the speed information of the gear of the conveyor belt through the logic conversion network to obtain the third speed information;

[0023] The service obtains a difference between the second rotation speed information and the third rotation speed information to obtain a second difference;

[0024] The server determines whether the second difference is greater than a set second difference threshold. When the second difference is less than or equal to the preset second difference threshold, it indicates that there is no abnormality in the second speed information.

[0025] When the second difference is greater than a preset second difference threshold, it indicates that the second rotation speed information is abnormal, and the server determines the second rotation speed information as first abnormal data.

[0026] As a preferred solution of a method for redundant speed measurement of a coal feeder according to the present invention, the fourth speed information includes: the server obtains the speed information of the conveyor belt according to the first abnormal data, the first preset weight information and the second preset weight information to obtain the fourth speed information:

[0027]

[0028] Among them, ω3 represents the fourth speed information, a represents the first preset weight information, ω1 represents the first speed information, b represents the second preset weight information, and ω2 represents the second speed information.

[0029] As a preferred solution of the method for redundant speed measurement of a coal feeder according to the present invention, the fourth speed information further includes: when the first abnormal data is the first speed information, it indicates that the first speed information is abnormal, the first speed sensor is abnormal, the server determines the second speed information as the fourth speed information, and generates warning information;

[0030] When the first abnormal data is the second speed information, it indicates that the second speed information is abnormal and the second speed sensor is abnormal. The server determines the first speed information as the fourth speed information and generates warning information.

[0031] When the first abnormal data is the first speed information and the second speed information, it means that both the first speed sensor and the second speed sensor are abnormal, and the server sets 0 as the speed of the conveyor belt of the coal feeder to obtain the fourth speed information;

[0032] When the first abnormal data does not exist, it means that there is no abnormality in both the first rotation speed information and the second rotation speed information, and the server calculates the rotation speed information of the conveyor belt to obtain the fourth rotation speed information.

[0033] As a preferred solution of the method for redundant speed measurement of a coal feeder described in the present invention, the adjustment of the rotational speed of the conveyor belt of the coal feeder includes: the server uses an undisturbed conversion algorithm to adjust the rotational speed of the conveyor belt gear of the coal feeder to the fourth speed within a preset time according to the fourth speed information, so that the conveyor belt gear of the coal feeder adjusts the fourth speed information.

[0034] Another object of the present invention is to provide a system for redundant speed measurement of coal feeders. The present invention solves the technical problems that may be encountered in the operation of coal feeder conveyor belts through precise measurement and redundant verification, real-time abnormality detection and diagnosis, weight change monitoring, data-driven decision support, and safe and stable adjustment and control, including ensuring the accuracy of speed information, quickly identifying abnormal situations, matching coal feeding amount with production needs, intelligent decision-making on the optimal speed, and early warning and risk management, thereby improving the reliability and operating efficiency of the system and ensuring equipment safety and production continuity.

[0035] As a preferred solution of the system for redundant measurement of coal feeder speed described in the present invention, it is characterized by comprising a data acquisition module, a data processing and analysis module, a decision and control module, and an early warning information generation module;

[0036] The data acquisition module includes a first rotation speed information sensor unit, a second rotation speed information sensor unit, and a pressure sensor unit;

[0037] The first speed information sensor unit and the second speed information sensor unit respectively send the speed information to the speed information processing unit, the pressure sensor unit sends the conveyor belt weight information to the weight information processing unit, and each unit of the data acquisition module collects data and sends it to the data processing and analysis module;

[0038] The data processing and analysis module includes a speed information processing unit, a weight information processing unit, a target production data processing unit, an anomaly detection unit, and a weight information processing unit;

[0039] The speed information processing unit calculates the difference between the first speed information and the second speed information and compares it with a preset threshold to determine whether there is an abnormality; the weight information processing unit calculates the change rate of the conveyor belt weight information and compares it with a preset threshold to determine whether there is an abnormality; the target production data processing unit converts the target production data into the gear speed information of the conveyor belt; the abnormality detection unit determines the abnormal data according to the results of the speed information processing unit and the weight information processing unit; the weight information processing unit determines the fourth speed information according to the abnormal data by applying the weight information;

[0040] The decision and control module includes a decision unit and a control unit;

[0041] The decision unit determines the fourth speed information according to the abnormal data and the output of the weight information processing unit, and the control unit adjusts the speed of the conveyor belt of the coal feeder according to the fourth speed information, and uses the non-disturbance conversion algorithm to complete the adjustment within a preset time;

[0042] The warning information generation module generates warning information according to the abnormality detection result and sends it to the staff or the system.

[0043] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and is characterized in that when the processor executes the computer program, the steps of the method applied to redundant measurement of coal feeder speed are implemented.

[0044] A computer-readable storage medium having a computer program stored thereon, characterized in that when the computer program is executed by a processor, the steps of the method for redundant measurement of coal feeder speed are implemented.

[0045] Beneficial effects of the present invention: The server of the present invention distinguishes the first speed information and the second speed information from abnormalities according to the different working principles of the first speed sensor and the second speed sensor, so that the accuracy of the server distinguishing the first speed information and the second speed information from abnormalities is improved. Thus, the accuracy of redundant measurement of the coal feeder speed is improved.

[0046] When the first speed information and the second speed information are both normal data, the readings of the speed sensors using two different working modes are obtained to perform mutual verification, so that the accuracy of the obtained speed of the coal feeder conveyor belt gear is improved, thereby improving the accuracy of the redundant measurement of the coal feeder speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0048] Figure 1 An overall flow chart of a method for redundant speed measurement of a coal feeder provided in accordance with an embodiment of the present invention.

[0049] Figure 2 A module schematic diagram of a system for redundant speed measurement of a coal feeder provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0051] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0052] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0053] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0054] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Example 1, reference Figure 1 , which is the first embodiment of the present invention, provides a method for redundant measurement of coal feeder speed, comprising:

[0057] S1: The server obtains the reading of the coal feeder sensor to obtain the first speed information and the second speed information.

[0058] Specifically, the server obtains the readings of the first speed information sensor and the second speed information sensor of the coal feeder to obtain the first speed information and the second speed information. The first speed information sensor and the second speed information sensor have different working principles.

[0059] The server receives readings uploaded by the first rotation speed information sensor and the second rotation speed information sensor via a data bus connected to the first rotation speed information sensor and the second rotation speed information sensor;

[0060] The server obtains the first rotation speed information and the second rotation speed information by receiving readings uploaded by the wireless transmission device carried by the first rotation speed information sensor and the second rotation speed information sensor.

[0061] The installation positions of the first rotational speed information sensor and the second rotational speed information sensor are different. For example, the first rotational speed information sensor can be installed at the end of the driving roller, and the second rotational speed information sensor can be installed on the motor housing. There is no limitation on the installation positions of the first rotational speed information sensor and the second rotational speed information sensor.

[0062] S2: The server determines whether there is an abnormality between the first speed information and the second speed information according to a preset speed information difference threshold.

[0063] Furthermore, the server determines whether there is an abnormality between the first rotational speed information and the second rotational speed information according to a preset first rotational speed information difference threshold.

[0064] The server calculates the difference between the first rotation speed information and the second rotation speed information according to the first rotation speed information and the second rotation speed information to obtain a first difference.

[0065] Determine whether the first difference is less than a preset speed information difference threshold:

[0066] When the first difference is less than the preset first rotation speed information difference threshold, it indicates that there is no abnormality between the first rotation speed information and the second rotation speed information.

[0067] When the first difference is greater than or equal to a preset rotation speed information difference threshold, it indicates that there is an abnormality between the first rotation speed information and the second rotation speed information.

[0068] The speed information difference threshold may be determined by a historical value or an empirical value.

[0069] S3: The server obtains the conveyor belt weight information and target production data of the coal feeder and determines abnormal data.

[0070] Furthermore, the server obtains the weight information of the conveyor belt by acquiring the reading of a pressure sensor arranged under the conveyor belt.

[0071] The server obtains the weight of coal required to complete the target production task through the target production task, and obtains the target production data.

[0072] It should be noted that the server makes an abnormality judgment on the first speed information based on the conveyor belt weight information. If the first speed information is abnormal, the first speed information is determined as the first abnormal data; if the first speed information is not abnormal, the server makes an abnormality judgment on the second speed information based on the target production database. If the second speed information is abnormal, the second speed information is determined as the first abnormal data.

[0073] Specifically, the server makes an abnormality judgment on the first rotation speed information according to the conveyor belt weight information, and if the first rotation speed information is abnormal, the first rotation speed information is determined as the first abnormal data.

[0074] The weight information of the conveyor belt of the coal feeder is an important parameter for calculating the amount of coal. Since the conveyor belt of the coal feeder realizes the transportation of coal by rotating the gears, when the conveyor belt of the coal feeder is in normal operation, the weight information of the conveyor belt changes evenly with the change of time. Therefore, the weight information of the conveyor belt is a uniform change when the conveyor belt is in normal operation, and it will only become a fixed value when the conveyor belt stops or in extremely special circumstances.

[0075] The server obtains first conveyor belt weight information and second conveyor belt weight information according to the conveyor belt weight information; wherein the second conveyor belt weight information is the conveyor belt weight information after a preset time interval of the first conveyor belt weight information.

[0076] The server obtains the weight information change rate of the conveyor belt according to the first conveyor belt weight information and the second conveyor belt weight information to obtain a first change rate, and the server determines whether the first change rate is greater than a preset change rate threshold.

[0077] The calculation formula for obtaining the change rate of the weight information of the conveyor belt according to the first conveyor belt weight information and the second conveyor belt weight information is as follows:

[0078]

[0079] The c in the formula represents the weight information change rate of the conveyor belt, W t+Δt Indicates the weight information of the second conveyor belt, W t represents the weight information of the first conveyor belt, and Δt represents the preset time interval.

[0080] If the first change rate is less than or equal to the preset change rate threshold, there is no abnormality in the first speed information; if it is greater than the preset change rate threshold, there is an abnormality in the first speed information, and the server determines the first speed information as first abnormal data.

[0081] If there is no abnormality in the first rotation speed information, the server performs abnormality determination on the second rotation speed information according to the target production data, and if there is an abnormality in the second rotation speed information, the second rotation speed information is determined as the first abnormal data.

[0082] The server converts the target production data into the rotation speed information of the gears of the conveyor belt through a logic conversion network to obtain the third rotation speed information.

[0083] The service obtains the difference between the second rotation speed information and the third rotation speed information to obtain a second difference; the server determines whether the second difference is greater than a preset second difference threshold.

[0084] If the second difference is less than or equal to the preset second difference threshold, it means that there is no abnormality in the second speed information; if the second difference is greater than the preset second difference threshold, it means that there is an abnormality in the second speed information, and the server determines the second speed information as the first abnormal data.

[0085] The key points are: the server obtains the weight information of the conveyor belt according to the pressure sensor under the conveyor belt of the coal feeder; the server obtains the weight information of two adjacent conveyor belts according to the preset time interval to obtain the first conveyor belt weight information and the second conveyor belt weight information. The server obtains the first change rate according to the first conveyor belt weight information and the second conveyor belt weight information, and compares the first change rate with the preset change rate threshold. The server determines whether the first speed information is abnormal according to the comparison result.

[0086] The server obtains target production data according to the target production task, and converts the target production data into the speed information of the coal feeder conveyor belt gear that meets the target production data according to the logic conversion network, and obtains the third speed information; the server compares the second speed information with the third speed information, and determines whether there is an abnormality in the second speed information based on the comparison result.

[0087] S4: The server obtains the rotation speed information of the conveyor belt according to the abnormal data and the preset weight information to obtain the fourth rotation speed information.

[0088] Furthermore, if the first abnormal data is the first speed information, it means that the first speed information is abnormal, and the first speed sensor is abnormal. The server determines the second speed information as the fourth speed information and generates a warning message, wherein the fourth speed information is:

[0089]

[0090] Among them, ω3 represents the fourth speed information, a represents the first preset weight information, ω1 represents the first speed information, b represents the second preset weight information, and ω2 represents the second speed information.

[0091] If the first abnormal data is the second rotational speed information, it means that the second rotational speed information is abnormal and the second rotational speed sensor is abnormal. The server determines the first rotational speed information as the fourth rotational speed information and generates a warning message.

[0092] If the first abnormal data is the first rotational speed information and the second rotational speed information, it means that both the first rotational speed sensor and the second rotational speed sensor are abnormal. The server sets 0 as the rotational speed of the conveyor belt of the coal feeder to obtain the fourth rotational speed information.

[0093] If the first abnormal data does not exist, it means that there is no abnormality in the first speed information and the second speed information, and the server maintains the current speed of the conveyor belt of the coal feeder. The current speed of the conveyor belt of the coal feeder is calculated by the first preset weight information, the second preset weight information, the first speed information and the second speed information.

[0094] The server performs abnormality discrimination on the first speed information and the second speed information, and obtains the first abnormal data according to the discrimination result. The server determines the speed of the coal feeder conveyor belt gear according to whether the first abnormal data is the first speed information or the second speed information or the first speed information and the second speed information, and obtains the fourth speed information.

[0095] S5: The server adjusts the rotation speed of the coal feeder conveyor belt according to the fourth rotation speed information.

[0096] It should be noted that the server uses a disturbance-free conversion algorithm to adjust the conveyor belt gear speed of the coal feeder to the fourth speed within a preset time according to the fourth speed information, so that the conveyor belt gear of the coal feeder can safely and smoothly adjust the fourth speed information.

[0097] Furthermore, the server collects the speed information of the first speed information sensor and the second speed information sensor within a preset time length in chronological order to obtain a first speed sequence and a second speed sequence; wherein the first speed sequence is a set of speed information collected by the first speed information sensor within a preset time, and the speed information set is sorted according to the time information; the second speed sequence is a set of speed information collected by the second speed information sensor within a preset time, and the speed information set is sorted according to the time information.

[0098] The server calculates a fourth speed information sequence according to the first speed information sequence and the second speed information sequence, the server collects the current speed of the conveyor belt of the coal feeder in time sequence to obtain a current speed sequence, the server calculates a transition speed information sequence according to the current speed sequence of the conveyor belt of the coal feeder and the fourth speed information sequence, and the server adjusts the current speed information of the conveyor belt of the coal feeder to the fourth speed information within a preset time according to the transition speed sequence;

[0099] The formula for calculating the fourth speed information sequence by the server according to the first speed information sequence and the second speed information sequence is as follows:

[0100]

[0101] In the formula, ω(t) represents the transition speed sequence, α represents the preset switching weight, which is determined by user input or system default, and α is a constant between [0, 1]; ω0(t) represents the current speed sequence, ω4(t) represents the fourth speed sequence, C(t) represents the speed compensation term, k represents the preset compensation coefficient, which is determined by historical values ​​or empirical values; ε(t) represents the data error between the first speed information sequence and the second speed information sequence obtained by the second speed information sensor, μ εrepresents the mean value corresponding to the data error between the first speed information sequence obtained by the first speed information sensor and the second speed information sequence obtained by the second speed information sensor, δ ε represents the standard deviation corresponding to the data error between the first speed information sequence obtained by the first speed information sensor and the second speed information sequence obtained by the second speed information sensor, ω1(t) represents the first speed sequence, and ω2(t) represents the second speed sequence.

[0102] Embodiment 2, the second embodiment of the present invention, is different from the previous embodiment in that:

[0103] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, and other media that can store program codes.

[0104] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0105] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0106] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0107] Example 3, reference Figure 2 , which is the third embodiment of the present invention, and provides a system for redundant measurement of coal feeder speed, including a data acquisition module 10, a data processing and analysis module 20, a decision and control module 30, and an early warning information generation module 40;

[0108] The data acquisition module 10 includes a first rotation speed information sensor unit 101 , a second rotation speed information sensor unit 102 , and a pressure sensor unit 103 .

[0109] The first speed information sensor unit 101 and the second speed information sensor unit 102 respectively send the speed information to the speed information processing unit 201 , the pressure sensor unit 103 sends the conveyor belt weight information to the weight information processing unit 202 , and each unit of the data acquisition module 10 collects data and sends it to the data processing and analysis module 20 .

[0110] The data processing and analysis module 20 includes a rotation speed information processing unit 201 , a weight information processing unit 202 , a target production data processing unit 203 , an anomaly detection unit 204 , and a weight information processing unit 205 .

[0111] The speed information processing unit 201 calculates the difference between the first speed information and the second speed information and compares it with a preset threshold to determine whether there is an abnormality; the weight information processing unit 202 calculates the change rate of the conveyor belt weight information and compares it with a preset threshold to determine whether there is an abnormality; the target production data processing unit 203 converts the target production data into the gear speed information of the conveyor belt; the abnormality detection unit 204 determines the abnormal data based on the results of the speed information processing unit 201 and the weight information processing unit 202; the weight information processing unit 205 applies the weight information based on the abnormal data to determine the fourth speed information.

[0112] The decision and control module 30 includes a decision unit 301 and a control unit 302 .

[0113] The decision unit 301 determines the fourth speed information according to the abnormal data and the output of the weight information processing unit 205, and the control unit 302 adjusts the speed of the coal feeder conveyor belt according to the fourth speed information, and completes the adjustment within a preset time using a disturbance-free conversion algorithm.

[0114] The warning information generation module 40 generates warning information according to the abnormality detection result and sends it to relevant personnel or systems.

[0115] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for redundant measurement of coal feeder speed, characterized in that: include, The server obtains the reading of the coal feeder sensor to obtain the first speed information and the second speed information; The server determines whether there is an abnormality in the first speed information and the second speed information according to a preset speed information difference threshold; The server obtains the conveyor belt weight information and target production data of the coal feeder and determines abnormal data; The server obtains the speed information of the conveyor belt according to the abnormal data and the preset weight information to obtain fourth speed information; The server adjusts the rotation speed of the coal feeder conveyor belt according to the fourth rotation speed information.

2. A method for redundant measurement of coal feeder speed according to claim 1, characterized in that: The first speed information and the second speed information include that the server obtains readings of a first speed information sensor and a second speed information sensor of the coal feeder to obtain the first speed information and the second speed information, and the first speed information sensor and the second speed information sensor are installed at different positions; The server receives readings uploaded by the first rotation speed information sensor and the second rotation speed information sensor through a data bus connected to the first rotation speed information sensor and the second rotation speed information sensor; The conveyor belt weight information includes the conveyor belt weight information obtained by the server by obtaining the reading of the pressure sensor arranged under the conveyor belt; The target production data includes the weight of coal required to complete the target production task obtained by the server through the target production task, thereby obtaining the target production data.

3. A method for redundant measurement of coal feeder speed according to claim 2, characterized in that: Whether the first speed information and the second speed information are abnormal comprises that the server calculates a difference between the first speed information and the second speed information according to the first speed information and the second speed information to obtain a first difference; Determine whether the first difference is less than a preset speed information difference threshold: When the first difference is less than the preset first speed information difference threshold, it indicates that there is no abnormality between the first speed information and the second speed information; When the first difference is greater than or equal to a preset rotation speed information difference threshold, it indicates that there is an abnormality between the first rotation speed information and the second rotation speed information.

4. A method for redundant measurement of coal feeder speed according to claim 3, characterized in that: The determining of abnormal data includes the server acquiring first conveyor belt weight information and second conveyor belt weight information according to the conveyor belt weight information; The second conveyor belt weight information is the conveyor belt weight information after a preset time interval of the first conveyor belt weight information; The server obtains the weight information change rate of the conveyor belt according to the first conveyor belt weight information and the second conveyor belt weight information to obtain a first change rate; The server determines whether the first change rate is greater than a set change rate threshold; When the first change rate is greater than the change rate threshold, the first rotation speed information is abnormal, and the server determines the first rotation speed information as first abnormal data; When the first change rate is less than or equal to the change rate threshold, there is no abnormality in the first speed information; If there is no abnormality in the first speed information, the server performs abnormality determination based on the second speed information of the target production data, and the server converts the target production data into the speed information of the gear of the conveyor belt through the logic conversion network to obtain the third speed information; The service obtains a difference between the second rotation speed information and the third rotation speed information to obtain a second difference value; The server determines whether the second difference is greater than a set second difference threshold. When the second difference is less than or equal to the preset second difference threshold, it indicates that there is no abnormality in the second speed information. When the second difference is greater than a preset second difference threshold, it indicates that the second rotation speed information is abnormal, and the server determines the second rotation speed information as first abnormal data.

5. A method for redundant measurement of coal feeder speed according to claim 4, characterized in that: The fourth speed information includes that the server obtains the speed information of the conveyor belt according to the first abnormal data, the first preset weight information and the second preset weight information to obtain the fourth speed information: Among them, ω3 represents the fourth speed information, a represents the first preset weight information, ω1 represents the first speed information, b represents the second preset weight information, and ω2 represents the second speed information.

6. A method for redundant measurement of coal feeder speed according to claim 5, characterized in that: The fourth speed information also includes that when the first abnormal data is the first speed information, it indicates that the first speed information is abnormal, the first speed sensor is abnormal, the server determines the second speed information as the fourth speed information, and generates warning information; When the first abnormal data is the second speed information, it indicates that the second speed information is abnormal and the second speed sensor is abnormal. The server determines the first speed information as the fourth speed information and generates warning information. When the first abnormal data is the first speed information and the second speed information, it means that both the first speed sensor and the second speed sensor are abnormal, and the server sets 0 as the speed of the conveyor belt of the coal feeder to obtain the fourth speed information; When the first abnormal data does not exist, it means that there is no abnormality in both the first rotation speed information and the second rotation speed information, and the server calculates the rotation speed information of the conveyor belt to obtain the fourth rotation speed information.

7. A method for redundant measurement of coal feeder speed according to claim 6, characterized in that: The adjusting of the rotation speed of the coal feeder conveyor belt includes: the server uses a disturbance-free conversion algorithm to adjust the rotation speed of the coal feeder conveyor belt gear to the fourth rotation speed within a preset time according to the fourth rotation speed information, so that the coal feeder conveyor belt gear adjusts the fourth rotation speed information.

8. A system using the method for redundant measurement of coal feeder speed as claimed in any one of claims 1 to 7, characterized in that: It includes data acquisition module, data processing and analysis module, decision-making and control module, and early warning information generation module; The data acquisition module includes a first rotation speed information sensor unit, a second rotation speed information sensor unit, and a pressure sensor unit; The first speed information sensor unit and the second speed information sensor unit respectively send the speed information to the speed information processing unit, the pressure sensor unit sends the conveyor belt weight information to the weight information processing unit, and each unit of the data acquisition module collects data and sends it to the data processing and analysis module; The data processing and analysis module includes a speed information processing unit, a weight information processing unit, a target production data processing unit, an anomaly detection unit, and a weight information processing unit; The speed information processing unit calculates the difference between the first speed information and the second speed information and compares it with a preset threshold value to determine whether there is an abnormality; The weight information processing unit calculates the change rate of the conveyor belt weight information and compares it with a preset threshold to determine whether there is an abnormality; The target production data processing unit converts the target production data into the gear speed information of the conveyor belt; the abnormality detection unit determines the abnormal data according to the results of the speed information processing unit and the weight information processing unit; the weight information processing unit determines the fourth speed information according to the abnormal data by applying the weight information; The decision and control module includes a decision unit and a control unit; The decision unit determines the fourth speed information according to the abnormal data and the output of the weight information processing unit, and the control unit adjusts the speed of the conveyor belt of the coal feeder according to the fourth speed information, and uses the non-disturbance conversion algorithm to complete the adjustment within a preset time; The warning information generation module generates warning information according to the abnormality detection result and sends it to the staff or the system.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of a method for redundant speed measurement of a coal feeder according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a method for redundant measurement of coal feeder speed according to any one of claims 1 to 7 are implemented.

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