A weighing method and device for a coal feeder

Abstract

The application discloses a weighing method and device for a coal feeder, and the method comprises the following steps: acquiring a first weighing signal sent by a first weighing device, a second weighing signal sent by a second weighing device, a set coal feeding amount, a conveyor belt speed and a frequency converter frequency; calculating a compensation weighing signal according to a compensation coefficient, the first weighing signal, the second weighing signal, the set coal feeding amount, the conveyor belt speed and the frequency converter frequency; judging whether the first weighing signal and the second weighing signal meet target conditions respectively and obtaining a judgment result; determining a first target signal and a second target signal from the first weighing signal, the second weighing signal and the compensation weighing signal according to the judgment result, and determining an actual coal feeding amount of the coal feeder from the first target signal and the second target signal. In this way, the coal feeder can accurately complete the weighing measurement of the coal feeding amount, the influence of the abnormal weighing sensor on the production rhythm is minimized, and the continuous and high-efficiency operation of the coal feeder is realized.

Description

Technical Field

[0001] This invention relates to the field of coal feeder technology, and in particular to a weighing and metering method and device for a coal feeder. Background Technology

[0002] The application of pulverized coal injection in modern blast furnace smelting aims to replace some of the coke, providing reducing agent and heat during the blast furnace smelting process, thereby reducing the coke ratio and costs. In recent years, with the continuous improvement of blast furnace operation levels, the demand for pulverized coal injection has been increasing, and the preparation of pulverized coal has become a major factor affecting blast furnace pulverization. The hourly coal feed rate of the coal feeder, as an important parameter for pulverized coal production output, directly affects the operating procedures of personnel at the pulverized coal injection station due to its stability and accuracy.

[0003] At present, the calculation of coal feed rate is mainly achieved by two weighing sensors installed under the feeder belt transmitting the weighing signal to the PLC for logical operation. However, the instability of the weighing signal caused by the failure of a single weighing sensor or external force often disrupts the normal production rhythm and thus affects production efficiency. Summary of the Invention

[0004] In view of the above problems, the present invention provides a weighing and metering method and device for a coal feeder to solve the problem of weighing and metering distortion caused by weighing sensor failure.

[0005] According to a first aspect of the present invention, a weighing and metering method for a coal feeder is provided, which is applied to a weighing and metering system for a coal feeder, the system comprising a coal feeder, a first weighing device and a second weighing device disposed on the coal feeder; The method includes: Acquire the first weighing signal sent by the first weighing device, the second weighing signal sent by the second weighing device, and set the coal feed rate, conveyor belt speed, and frequency converter frequency; The compensation weighing signal is calculated based on the compensation coefficient, the first weighing signal, the second weighing signal, the set coal feed rate, the conveyor belt speed, and the frequency converter frequency; wherein, the compensation weighing signal is used to replace the signal when the first weighing device or the second weighing device fails. Determine whether the first weighing signal and the second weighing signal meet the target conditions respectively, and obtain the determination results; wherein, the target conditions are constructed by the first weighing signal, the second weighing signal and the compensated weighing signal; Based on the judgment result, a first target signal and a second target signal are determined from the first weighing signal, the second weighing signal, and the compensated weighing signal, and the actual coal feed rate of the coal feeder is determined from the first target signal and the second target signal.

[0006] Optionally, the steps for constructing the target conditions include: Calculate the average of the first weighing signal, the second weighing signal, and the compensated weighing signal; Calculate the first average difference between the first weighing signal and the mean, calculate the second average difference between the second weighing signal and the mean, and calculate the third average difference between the compensated weighing signal and the mean; Calculate the first difference between the first weighing signal and the second weighing signal, calculate the second difference between the second weighing signal and the compensated weighing signal, and calculate the third difference between the compensated weighing signal and the first weighing signal; The target conditions are constructed based on the first average difference value, the second average difference value, the third average difference value, the first difference value, the second difference value, and the third difference value.

[0007] Optionally, determining the first target signal and the second target signal from the first weighing signal, the second weighing signal, and the compensated weighing signal based on the judgment result includes: If the first weighing signal and the second weighing signal respectively satisfy the target conditions, then the first weighing signal is taken as the first target signal and the second weighing signal is taken as the first target signal. If the first weighing signal does not meet the target condition, but the second weighing signal meets the target condition, then the compensated weighing signal is taken as the first target signal, and the second weighing signal is taken as the second target signal. If the first weighing signal meets the target condition and the second weighing signal does not meet the target condition, then the first weighing signal is used as the first target signal, and the compensated weighing signal is used as the second target signal.

[0008] Optionally, the method further includes: If the first weighing signal or the second weighing signal does not meet the target condition, an alarm signal is issued.

[0009] Optionally, the compensated weighing signal is calculated using the following formula: W s =0.5KW 设 (f / V) Where K is the compensation coefficient, W s To compensate for the weighing signal, W 设 To set the coal feed rate, V is the conveyor belt speed, and f is the frequency of the frequency converter.

[0010] Optionally, the compensation coefficient takes a value in the range of 0.0056-0.00617.

[0011] According to a second aspect of the present invention, a weighing and metering device for a coal feeder is provided, comprising: The acquisition module is used to acquire the first weighing signal sent by the first weighing device, the second weighing signal sent by the second weighing device, the set coal feed rate, the conveyor belt speed and the frequency converter frequency. The calculation module is used to calculate the compensation weighing signal based on the compensation coefficient, the first weighing signal, the second weighing signal, the set coal feed rate, the conveyor belt speed, and the frequency converter frequency; wherein, the compensation weighing signal is used to replace the signal when the first weighing device or the second weighing device fails. The judgment module is used to judge whether the first weighing signal and the second weighing signal meet the target conditions respectively, and to obtain the judgment result; wherein, the target conditions are constructed by the first weighing signal, the second weighing signal and the compensated weighing signal; The determining module is used to determine a first target signal and a second target signal from the first weighing signal, the second weighing signal, and the compensated weighing signal based on the judgment result, and to determine the actual coal feed rate of the coal feeder based on the first target signal and the second target signal.

[0012] According to a third aspect of the present invention, a weighing and metering system for a coal feeder is provided, comprising: a coal feeder, a first weighing device, a second weighing device, a belt speed sensor, and a controller disposed on the coal feeder; The controller executes the aforementioned weighing and metering method for the coal feeder.

[0013] According to a fourth aspect of the present invention, an electronic device is provided, the electronic device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the aforementioned weighing and metering method for a coal feeder.

[0014] According to a fifth aspect of the present invention, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the aforementioned weighing and metering method for a coal feeder.

[0015] The above-described one or more technical solutions in the embodiments of this specification have at least the following technical effects: This specification provides a weighing and metering method and apparatus for a coal feeder. The method includes: acquiring a first weighing signal sent by a first weighing device, a second weighing signal sent by a second weighing device, a set coal feed rate, a conveyor belt speed, and a frequency converter frequency; calculating a compensated weighing signal based on a compensation coefficient, the first weighing signal, the second weighing signal, the set coal feed rate, the conveyor belt speed, and the frequency converter frequency; wherein the compensated weighing signal is used for signal replacement when either the first weighing device or the second weighing device malfunctions; determining whether the first weighing signal and the second weighing signal meet target conditions, and obtaining a determination result; wherein the target conditions are constructed from the first weighing signal, the second weighing signal, and the compensated weighing signal; and determining a first target signal and a second target signal from the first weighing signal, the second weighing signal, and the compensated weighing signal based on the determination result, and determining the actual coal feed rate of the coal feeder based on the first target signal and the second target signal. This enables the coal feeder to accurately weigh and measure the amount of coal fed, minimizing the impact of weighing sensor malfunctions on the production rhythm, achieving continuous and efficient operation of the coal feeder, and meeting the needs of modern smelting.

[0016] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A flowchart of a weighing and metering method for a coal feeder according to an embodiment of the present invention is shown.

[0018] Figure 2 A block diagram of a weighing and metering device for a coal feeder according to an embodiment of the present invention is shown. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] In the existing technology, the coal feeder works by setting the feeding amount using a host computer, and two weighing sensors installed under the coal feeder belt transmit the weighing signal to the PLC. The PLC makes feedback adjustments based on the set feeding amount and the returned weighing value. The PLC outputs instructions to the coal feeder belt frequency converter to control the belt speed, thereby realizing the quantitative feeding of the coal feeder.

[0024] Specifically, the weighing signals collected by two load cells installed below the coal feeder belt are input into the PLC for processing. The resulting data is the real-time value of the coal feeder's feed rate. The deviation between this value and the setpoint value is logically calculated within the PLC and then used as a control value input to the frequency converter to control the feeder belt speed. If a load cell fails, or if material jams between the belt and the load cell, the weighing signal will be distorted, affecting the frequency converter's control of the belt speed. This will result in a significant difference between the actual coal feed rate and the set feed rate, necessitating a shutdown and immediate troubleshooting, disrupting normal production.

[0025] Because the high-intensity, high-volume blast furnace smelting process places high demands on the stable and continuous operation of the coal feeder, and the aforementioned weighing methods require high performance and operating environment of the weighing sensor itself, it is necessary to frequently check the operating status of the weighing sensor and clean its operating environment.

[0026] Based on the above situation, combined with Figure 1As shown, the present invention provides a weighing and metering method for a coal feeder, which is applied to a weighing and metering system for a coal feeder. The system includes a coal feeder, a first weighing device and a second weighing device installed on the coal feeder.

[0027] The weighing and metering method of the coal feeder includes steps 101 to 104: Step 101: Obtain the first weighing signal sent by the first weighing device, the second weighing signal sent by the second weighing device, and set the coal feed rate, conveyor belt speed, and frequency converter frequency. The coal feeder, used for conveying coal, typically consists of a motor, conveyor belt, inlet, and outlet. A first and second weighing device are installed on the coal feeder to measure the weight of the loose coal powder on the conveyor belt. These weighing devices can use electronic load cells, which are characterized by high precision and fast response. A frequency converter controls the operating frequency of the conveyor belt motor, thereby adjusting the conveyor belt speed. Frequency converters typically have high-precision frequency control capabilities. A conveyor belt speed sensor is also added to the coal feeder to measure the speed of the conveyor belt.

[0028] In actual production, the set coal feed rate of the coal feeder is determined by statistical data. If the first and second weighing devices are operating normally, the sum of the first and second weighing signals will be approximately the same as the set coal feed rate.

[0029] If the first or second weighing device malfunctions, or if the weighing signal is unstable due to external force, the comparison logic set inside the program is needed to identify the malfunctioning weighing device, and then the weighing signal sent by that weighing device will be blocked during weighing.

[0030] Step 102: Calculate the compensation weighing signal based on the compensation coefficient, the first weighing signal, the second weighing signal, the set coal feed rate, the conveyor belt speed, and the frequency converter frequency; wherein, the compensation weighing signal is used to replace the signal when the first weighing device or the second weighing device fails. In this embodiment, a compensated weighing signal can be calculated based on the compensation coefficient, the first weighing signal, the second weighing signal, the set coal feed rate, the conveyor belt speed, and the inverter frequency. By combining the calculated compensated weighing signal with the first and second weighing signals, fault diagnosis can be performed on the first and second weighing devices. If any weighing device malfunctions, the compensated weighing signal replaces the weighing signal of that device.

[0031] In one embodiment, the step of calculating the compensated weighing signal may include: W 总 =W1+W2 Among them, W 总W1 represents the actual coal feed rate of the coal feeder; W2 represents the first weighing signal sent by the first weighing sensor; W3 represents the second weighing signal sent by the second weighing sensor.

[0032] In actual production, the material bulk density of the coal feeder is approximately 0.85 t / m³. 3 The feeder belt width is 1.0m, the material layer thickness is 0.21m, and the actual weight of the feeder can be calculated using the following formula: W 速度 =3600ρwhv Where ρ is the bulk density ratio of the coal feeder; W 速度 To calculate the actual hourly feed weight of the coal feeder based on the belt speed; w is the width of the coal feeder belt; h is the material layer thickness; v is the conveyor belt speed; The data in Table 1, obtained from the above formulas and actual production measurements, is as follows:

[0033] Table 1 The data above shows that the ratio of inverter frequency to conveyor belt speed remains between 171 and 174, and the ratio of actual weight to set coal feed rate is between 0.98 and 1.06. Therefore, the relationship between these four factors is as follows: K=(W 速度 / W 设 ) / (f / v) Where K is the compensation coefficient; W 速度 To calculate the actual hourly feed weight of the coal feeder based on the belt speed; W 设 f is the set coal feed rate; f is the inverter frequency; v is the conveyor belt speed.

[0034] The calculated K value ranges from 0.0056 to 0.00617, and after optimization based on process parameters, the preferred K value is 0.0058.

[0035] Based on the above, the formula for belt speed compensation weighing signal can be obtained: W s =0.5KW 设 (f / V) Among them, W s For the optimized compensated weighing signal, W 设 V is the set coal feed rate; V is the conveyor belt speed; f is the frequency of the frequency converter.

[0036] Step 103: Determine whether the first weighing signal and the second weighing signal meet the target conditions respectively, and obtain the determination results; wherein, the target conditions are constructed by the first weighing signal, the second weighing signal and the compensated weighing signal; In this embodiment, the step of constructing the target condition includes: Calculate the average of the first weighing signal, the second weighing signal, and the compensated weighing signal; Calculate the first average difference between the first weighing signal and the mean, calculate the second average difference between the second weighing signal and the mean, and calculate the third average difference between the compensated weighing signal and the mean; Calculate the first difference between the first weighing signal and the second weighing signal, calculate the second difference between the second weighing signal and the compensated weighing signal, and calculate the third difference between the compensated weighing signal and the first weighing signal; The target conditions are constructed based on the first average difference value, the second average difference value, the third average difference value, the first difference value, the second difference value, and the third difference value.

[0037] For example: Compare the first weighing signal W1, the second weighing signal W2, and the compensated weighing signal W s The deviation relationship among the three is such that if the first weighing signal or the first weighing signal is abnormal, the corresponding weighing instrument is considered faulty. The formula is as follows: W A =(W1+W2+W S ) / 3 W XA =|W X -W A | Among them, W A W represents the average value of all weighing sensors. XA W represents the difference between the weighing value and the average value of any weighing sensor, i.e., the average difference (which is the first average difference between the first weighing signal and the average value, the second average difference between the second weighing signal and the average value, and the third average difference between the compensated weighing signal and the average value). X For any weighing sensor signal (first weighing device, second weighing signal, compensated weighing signal); In this embodiment, a corresponding deviation range is preset for each weighing sensor. This deviation range refers to the allowable deviation range between the weighing signal corresponding to that weighing sensor and the mean value (this range can be set by a technician). In addition, a corresponding tolerance range is preset for any two weighing sensors.

[0038] By defining the corresponding deviation range and tolerance range, the target conditions for the first and second weighing instruments can be determined.

[0039] It should be noted that the first weighing device is considered faulty only if it fails to meet both the corresponding deviation range and tolerance range simultaneously; or the second weighing device is considered faulty only if it fails to meet both the corresponding deviation range and tolerance range simultaneously.

[0040] For example, when determining whether the first weighing device is faulty, it is necessary to compare the absolute value of the first average difference with the corresponding deviation range, the absolute value of the first difference with the corresponding tolerance range, and the absolute value of the third difference with the corresponding tolerance range. Only when the absolute value of the first average difference is less than or equal to the corresponding deviation range, the absolute value of the first difference is less than or equal to the corresponding tolerance range, and the absolute value of the third difference is less than or equal to the corresponding tolerance range, is the first weighing device considered faulty.

[0041] When determining whether the second weighing device is faulty, the absolute value of the second average difference needs to be compared with the corresponding deviation range, the absolute value of the first difference needs to be compared with the corresponding tolerance range, and the absolute value of the second difference needs to be compared with the corresponding tolerance range. Only when the absolute value of the second average difference is less than or equal to the corresponding deviation range, the absolute value of the first difference is less than or equal to the corresponding tolerance range, and the absolute value of the second difference is less than or equal to the corresponding tolerance range, is the second weighing device considered faulty.

[0042] Step 104: Based on the judgment result, determine the first target signal and the second target signal from the first weighing signal, the second weighing signal, and the compensated weighing signal, and determine the actual coal feed rate of the coal feeder from the first target signal and the second target signal.

[0043] In this embodiment, there are three possible judgment results: the first weighing device is faulty, the second weighing device is faulty, and both the first and second weighing devices are normal.

[0044] If the first weighing signal and the second weighing signal respectively meet the target conditions, it indicates that the first weighing device and the second weighing device are normal. In this case, the first weighing signal can be used as the first target signal and the second weighing signal can be used as the first target signal. If the first weighing signal does not meet the target condition, but the second weighing signal meets the target condition, it indicates that the first weighing device is faulty. In this case, the compensation weighing signal can be used as the first target signal and the second weighing signal can be used as the second target signal. If the first weighing signal meets the target condition, but the second weighing signal does not meet the target condition, it indicates that the second weighing device is faulty. In this case, the first weighing signal can be used as the first target signal, and the compensation weighing signal can be used as the second target signal.

[0045] In one embodiment, if the first weighing signal does not meet the target condition or the second weighing signal does not meet the target condition, an alarm signal is issued, and the fault is investigated and handled during production stoppage.

[0046] In summary, the embodiments of this specification provide a weighing and metering method for a coal feeder. The method includes: acquiring a first weighing signal sent by a first weighing device, a second weighing signal sent by a second weighing device, setting a coal feed rate, a conveyor belt speed, and a frequency converter frequency; calculating a compensated weighing signal based on a compensation coefficient, the first weighing signal, the second weighing signal, the set coal feed rate, the conveyor belt speed, and the frequency converter frequency; wherein the compensated weighing signal is used for signal replacement when either the first or second weighing device malfunctions; determining whether the first weighing signal and the second weighing signal meet target conditions, and obtaining a determination result; wherein the target conditions are constructed from the first weighing signal, the second weighing signal, and the compensated weighing signal; and determining a first target signal and a second target signal from the first weighing signal, the second weighing signal, and the compensated weighing signal based on the determination result, and determining the actual coal feed rate of the coal feeder based on the first target signal and the second target signal. This enables the coal feeder to accurately weigh and measure the amount of coal fed, minimizing the impact of weighing sensor malfunctions on the production rhythm, achieving continuous and efficient operation of the coal feeder, and meeting the needs of modern smelting.

[0047] Based on the same inventive concept, combined with Figure 2 As shown, this embodiment of the invention also provides a weighing and metering device for a coal feeder, comprising: The acquisition module is used to acquire the first weighing signal sent by the first weighing device, the second weighing signal sent by the second weighing device, the set coal feed rate, the conveyor belt speed and the frequency converter frequency. The calculation module is used to calculate the compensation weighing signal based on the compensation coefficient, the first weighing signal, the second weighing signal, the set coal feed rate, the conveyor belt speed, and the frequency converter frequency; wherein, the compensation weighing signal is used to replace the signal when the first weighing device or the second weighing device fails. The judgment module is used to judge whether the first weighing signal and the second weighing signal meet the target conditions respectively, and to obtain the judgment result; wherein, the target conditions are constructed by the first weighing signal, the second weighing signal and the compensated weighing signal; The determining module is used to determine a first target signal and a second target signal from the first weighing signal, the second weighing signal, and the compensated weighing signal based on the judgment result, and to determine the actual coal feed rate of the coal feeder based on the first target signal and the second target signal.

[0048] Optionally, the judgment module is also used for: Calculate the average of the first weighing signal, the second weighing signal, and the compensated weighing signal; Calculate the first average difference between the first weighing signal and the mean, calculate the second average difference between the second weighing signal and the mean, and calculate the third average difference between the compensated weighing signal and the mean; Calculate the first difference between the first weighing signal and the second weighing signal, calculate the second difference between the second weighing signal and the compensated weighing signal, and calculate the difference between the compensated weighing signal and... Based on the third difference between the first weighing signals; The target conditions are constructed based on the first average difference value, the second average difference value, the third average difference value, the first difference value, the second difference value, and the third difference value.

[0049] Optionally, the determination module is also used for: If the first weighing signal and the second weighing signal respectively satisfy the target conditions, then the first weighing signal is taken as the first target signal and the second weighing signal is taken as the first target signal. If the first weighing signal does not meet the target condition, but the second weighing signal meets the target condition, then the compensated weighing signal is taken as the first target signal, and the second weighing signal is taken as the second target signal. If the first weighing signal meets the target condition and the second weighing signal does not meet the target condition, then the first weighing signal is used as the first target signal, and the compensated weighing signal is used as the second target signal.

[0050] Optionally, the determination module is also used for: If the first weighing signal or the second weighing signal does not meet the target condition, an alarm signal is issued.

[0051] Optionally, the compensated weighing signal is calculated using the following formula: Ws=0.5KW 设 (f / V) Where K is the compensation coefficient, Ws is the compensation weighing signal, and W 设 To set the coal feed rate, V is the conveyor belt speed, and f is the frequency of the frequency converter.

[0052] Optionally, the compensation coefficient takes a value in the range of 0.0056-0.00617.

[0053] In summary, the weighing and metering device for a coal feeder provided in this specification acquires a first weighing signal sent by a first weighing device, a second weighing signal sent by a second weighing device, a set coal feed rate, a conveyor belt speed, and a frequency converter frequency; calculates a compensated weighing signal based on a compensation coefficient, the first weighing signal, the second weighing signal, the set coal feed rate, the conveyor belt speed, and the frequency converter frequency; wherein the compensated weighing signal is used for signal replacement when either the first weighing device or the second weighing device malfunctions; determines whether the first weighing signal and the second weighing signal meet target conditions, and obtains a determination result; wherein the target conditions are constructed from the first weighing signal, the second weighing signal, and the compensated weighing signal; and determines a first target signal and a second target signal from the first weighing signal, the second weighing signal, and the compensated weighing signal based on the determination result, and determines the actual coal feed rate of the coal feeder based on the first target signal and the second target signal. This enables the coal feeder to accurately weigh and measure the amount of coal fed, minimizing the impact of weighing sensor malfunctions on the production rhythm, achieving continuous and efficient operation of the coal feeder, and meeting the needs of modern smelting.

[0054] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the weighing and metering device of the coal feeder described above can be referred to the corresponding process in the aforementioned method, and will not be elaborated further here.

[0055] According to a third aspect of the present invention, a weighing and metering system for a coal feeder is provided, comprising: a coal feeder, a first weighing device, a second weighing device, a belt speed sensor, and a controller disposed on the coal feeder; The controller executes the aforementioned weighing and metering method for the coal feeder.

[0056] Based on the same inventive concept, this embodiment provides an electronic device including a weighing and metering device for a coal feeder, a memory, a processor, and a communication unit. The memory stores machine-readable instructions that can be executed by the processor. When the electronic device is running, the processor and the memory communicate with each other via a bus. The processor executes the machine-readable instructions and performs the weighing and metering method of the coal feeder.

[0057] The memory, processor, and communication unit are electrically connected directly or indirectly to achieve signal transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The weighing and metering device of the coal feeder includes at least one software functional module that can be stored in the memory in the form of software or firmware. The processor is used to execute the executable module stored in the memory (e.g., the software functional module or computer program included in the weighing and metering device of the coal feeder).

[0058] The memory can be, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), etc.

[0059] In some embodiments, the processor is configured to perform one or more functions described in this embodiment. In some embodiments, the processor may include one or more processing cores (e.g., a single-core processor (S) or a multi-core processor (S)). By way of example only, the processor may include a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), an Application Specific Instruction-set Processor (ASIP), a Graphics Processing Unit (GPU), a Physics Processing Unit (PPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Device (PLD), a controller, a microcontroller unit, a Reduced Instruction Set Computing (RISC) computer, or a microprocessor, or any combination thereof.

[0060] For ease of explanation, only one processor is described in the electronic device. However, it should be noted that the electronic device in this embodiment may also include multiple processors, and therefore the steps performed by one processor as described in this embodiment may also be performed jointly or individually by multiple processors. For example, if the server's processor performs steps A and B, it should be understood that steps A and B may also be performed jointly by two different processors or individually by one processor. For example, one processor performs step A, and a second processor performs step B, or the first and second processors jointly perform steps A and B.

[0061] In this embodiment, the memory is used to store the program, and the processor is used to execute the program after receiving the execution instruction. The process definition method disclosed in any implementation of this embodiment can be applied to the processor, or implemented by the processor.

[0062] The communication unit is used to establish communication connections between electronic devices and other devices via a network, and to send and receive data via the network.

[0063] In some implementations, the network can be any type of wired or wireless network, or a combination thereof. By way of example only, the network may include wired networks, wireless networks, fiber optic networks, telecommunications networks, intranets, the Internet, local area networks (LANs), wide area networks (WANs), wireless local area networks (WLANs), metropolitan area networks (MANs), public switched telephone networks (PSTNs), Bluetooth networks, ZigBee networks, or near field communication (NFC) networks, or any combination thereof.

[0064] In this embodiment, the electronic device may be, but is not limited to, a laptop, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), or other electronic devices. This embodiment does not impose any restrictions on the specific type of electronic device.

[0065] Based on the above, this embodiment provides a readable storage medium storing a computer program, which, when executed by a processor, implements the weighing and metering method of the coal feeder according to any of the aforementioned embodiments.

[0066] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the readable storage medium described above can be referred to the corresponding process in the aforementioned method, and will not be elaborated further here.

[0067] The above are merely various embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A weighing and metering method for a coal feeder, characterized in that, A weighing and metering system applied to a coal feeder, the system comprising a coal feeder, a first weighing device and a second weighing device installed on the coal feeder; The method includes: Acquire the first weighing signal sent by the first weighing device, the second weighing signal sent by the second weighing device, and set the coal feed rate, conveyor belt speed, and frequency converter frequency; The compensation weighing signal is calculated based on the compensation coefficient, the first weighing signal, the second weighing signal, the set coal feed rate, the conveyor belt speed, and the frequency converter frequency; wherein, the compensation weighing signal is used to replace the signal when the first weighing device or the second weighing device fails. Determine whether the first weighing signal and the second weighing signal meet the target conditions respectively, and obtain the determination results; wherein, the target conditions are constructed by the first weighing signal, the second weighing signal and the compensated weighing signal; Based on the judgment result, a first target signal and a second target signal are determined from the first weighing signal, the second weighing signal, and the compensated weighing signal, and the actual coal feed rate of the coal feeder is determined from the first target signal and the second target signal.

2. The method according to claim 1, characterized in that, The steps for constructing the target conditions include: Calculate the average of the first weighing signal, the second weighing signal, and the compensated weighing signal; Calculate the first average difference between the first weighing signal and the mean, calculate the second average difference between the second weighing signal and the mean, and calculate the third average difference between the compensated weighing signal and the mean; Calculate the first difference between the first weighing signal and the second weighing signal, calculate the second difference between the second weighing signal and the compensated weighing signal, and calculate the third difference between the compensated weighing signal and the first weighing signal; The target conditions are constructed based on the first average difference value, the second average difference value, the third average difference value, the first difference value, the second difference value, and the third difference value.

3. The method according to claim 1, characterized in that, The step of determining the first target signal and the second target signal from the first weighing signal, the second weighing signal, and the compensated weighing signal based on the judgment result includes: If the first weighing signal and the second weighing signal respectively satisfy the target conditions, then the first weighing signal is taken as the first target signal and the second weighing signal is taken as the first target signal. If the first weighing signal does not meet the target condition, but the second weighing signal meets the target condition, then the compensated weighing signal is taken as the first target signal, and the second weighing signal is taken as the second target signal. If the first weighing signal meets the target condition and the second weighing signal does not meet the target condition, then the first weighing signal is used as the first target signal, and the compensated weighing signal is used as the second target signal.

4. The method according to claim 3, characterized in that, The method further includes: If the first weighing signal or the second weighing signal does not meet the target condition, an alarm signal is issued.

5. The method according to claim 1, characterized in that, The compensated weighing signal is calculated using the following formula: W s =0.5KW 设 (f / V) Where K is the compensation coefficient, W s To compensate for the weighing signal, W 设 To set the coal feed rate, V is the conveyor belt speed, and f is the frequency of the frequency converter.

6. The method according to claim 1, characterized in that, The compensation coefficient ranges from 0.0056 to 0.00617.

7. A weighing and metering device for a coal feeder, characterized in that, include: The acquisition module is used to acquire the first weighing signal sent by the first weighing device, the second weighing signal sent by the second weighing device, the set coal feed rate, the conveyor belt speed and the frequency converter frequency. The calculation module is used to calculate the compensation weighing signal based on the compensation coefficient, the first weighing signal, the second weighing signal, the set coal feed rate, the conveyor belt speed, and the frequency converter frequency; wherein, the compensation weighing signal is used to replace the signal when the first weighing device or the second weighing device fails. The judgment module is used to judge whether the first weighing signal and the second weighing signal meet the target conditions respectively, and to obtain the judgment result; wherein, the target conditions are constructed by the first weighing signal, the second weighing signal and the compensated weighing signal; The determining module is used to determine a first target signal and a second target signal from the first weighing signal, the second weighing signal, and the compensated weighing signal based on the judgment result, and to determine the actual coal feed rate of the coal feeder based on the first target signal and the second target signal.

8. A weighing and metering system for a coal feeder, characterized in that, include: A coal feeder, a first weighing device, a second weighing device, a belt speed sensor, and a controller installed on the coal feeder; The controller executes the weighing and metering method of the coal feeder as described in any one of claims 1-6.

9. An electronic device, characterized in that, The electronic device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the weighing and metering method of the coal feeder according to any one of claims 1-6.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the weighing and metering method for the coal feeder as described in any one of claims 1-6.

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