Method, device and equipment for monitoring limiting power supply of buggy ladle and storage medium

Abstract

The invention discloses a buggy ladle limiting power source monitoring method, device and equipment and a storage medium, and relates to the technical field of metallurgical equipment safety control, and the buggy ladle limiting power source monitoring method comprises the steps that a voltage signal of a limiting power source of a buggy ladle is obtained; judging the state of a limiting power supply based on the voltage signal; when the state of the limiting power supply is a fault, the buggy ladle is forbidden to walk; and under the condition that the state of the limiting power supply is normal, the buggy ladle is allowed to walk. The device can prevent the buggy ladle from going out of the stroke range when the limiting power supply breaks down.

Description

Technical Field

[0001] This application relates to the field of safety control technology for metallurgical equipment, and in particular to a method, device, equipment and storage medium for monitoring the limit power supply of ladle cars. Background Technology

[0002] The RH furnace (vacuum refining furnace) has a fast refining pace and high ambient temperature. The ladle car needs to frequently travel back and forth within a fixed track area. The end of its journey depends entirely on the 24VDC (Volts Direct Current) electrical signal given by the limit switch as the criterion for "stopping at the edge". Any factor that causes the electrical signal to disappear must be immediately identified as a dangerous state and forced to stop moving. Otherwise, the vehicle will lose electronic boundary protection, directly threatening the safety of the power cable, adjacent equipment and furnace structure.

[0003] Currently, the site uses a Mean Well 24VDC rail power supply to supply power to the limit switches at both ends in parallel via a common two-core cable. The PLC (Programmable Logic Controller) only collects the potential of the normally closed limit contacts, and the power supply itself has no status feedback channel. The travel control logic considers "unlimited triggering" as safe, and the driver's cab operation buttons directly drive the inverter to rotate forward and backward. The system does not perform any hardware or software detection or interlocking of the 24V power supply status.

[0004] However, when overflowing slag from the ladle burns the cables or causes an internal short circuit in the limit switch, Mean Well power supplies trip due to overcurrent or even break down internal components, causing an instantaneous loss of power to the entire 24V busbar. The PLC misinterprets the constant low-level limit signal as "the vehicle has not reached its destination." As long as the driver continues to hold down the travel button, the inverter continues to output torque until the mechanical bolt reaches its limit, breaking the power chain or colliding with an adjacent vehicle. Each incident has resulted in cable failure, vehicle deformation, and production shutdowns for repairs, exposing the fundamental flaws of the power supply failure being undetectable and lacking mandatory interlocking. Therefore, preventing the ladle car from going out of its travel range when the limit switch power supply fails has become an urgent problem to solve.

[0005] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is prior art. Summary of the Invention

[0006] The purpose of this application is to provide a method, device, equipment and storage medium for monitoring the limit power supply of a ladle car, which aims to solve the technical problem of how to prevent the ladle car from going out of its travel range when the limit power supply fails.

[0007] To achieve the above objectives, this application proposes a method for monitoring the limit power supply of a ladle car, the method comprising:

[0008] Obtain the voltage signal of the limit power supply of the ladle car;

[0009] The status of the limit power supply is determined based on the voltage signal.

[0010] When the limit power supply is faulty, the ladle car is prohibited from moving.

[0011] When the limit power supply is in normal condition, the ladle car is allowed to move.

[0012] In one embodiment, the step of determining the limit power supply state based on the voltage signal includes:

[0013] Obtain the current voltage value of the voltage signal;

[0014] If the current voltage value is less than the preset power supply fault threshold, the limit power supply is determined to be faulty.

[0015] When the current voltage value is greater than or equal to the preset power failure threshold, the limit power supply is determined to be in normal condition.

[0016] In one embodiment, the step of determining that the limit power supply is faulty when the current voltage value is less than a preset power supply fault threshold includes:

[0017] Calculate the voltage difference between the current voltage value and the preset power failure threshold;

[0018] If the voltage difference is less than a preset tolerance threshold, the voltage signal is determined to be abnormal.

[0019] If the voltage signal remains abnormal for a preset duration, the limit power supply is determined to be faulty.

[0020] In one embodiment, the step of preventing the ladle car from moving when the limit power supply is faulty includes:

[0021] When the limit power supply is faulty, the ladle car travel interlock sign is set to true;

[0022] Based on the steel ladle car movement interlocking sign, a movement prohibition command is generated;

[0023] The driving prohibition command is sent to the drive controller so that the drive controller prevents the ladle car from moving.

[0024] In one embodiment, the step of generating a walking prohibition command based on the ladle car walking interlocking sign includes:

[0025] An initial prohibition command is generated based on the steel ladle car walking interlock sign and preset interlock condition configuration parameters;

[0026] When the binary value of the status flag bit in the initial prohibition instruction is equal to a preset valid value, the initial prohibition instruction is encapsulated into a walking prohibition command.

[0027] In one embodiment, the step of allowing the ladle car to move when the limit power supply is in a normal state includes:

[0028] When the limit power supply is in normal condition, the ladle car travel interlock sign is set to false.

[0029] Based on the steel ladle car walking interlocking sign, a walking permission command is generated;

[0030] The travel permission command is sent to the drive controller so that the drive controller allows the ladle car to move.

[0031] In one embodiment, the step of acquiring the voltage signal of the limit power supply of the ladle car includes:

[0032] Collect the raw voltage data of the limit power supply of the ladle car;

[0033] The original voltage data is subjected to low-pass filtering to obtain filtered voltage data;

[0034] The filtered voltage data is converted into digital voltage values ​​using an analog-to-digital converter.

[0035] The digital voltage value is adjusted based on a preset voltage calibration coefficient to obtain a voltage signal.

[0036] Furthermore, to achieve the above objectives, this application also proposes a ladle car limit power supply monitoring device, the device comprising:

[0037] The voltage acquisition module is used to acquire the voltage signal of the limit power supply of the ladle car;

[0038] The status determination module is used to determine the status of the limit power supply based on the voltage signal;

[0039] The safety lock control module is used to prevent the ladle car from moving when the limit power supply is faulty;

[0040] The walking enable module is used to allow the ladle car to move when the limit power supply is in a normal state.

[0041] In addition, to achieve the above objectives, this application also proposes a ladle car limit power monitoring device, the device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the ladle car limit power monitoring method described above.

[0042] In addition, to achieve the above objectives, this application also proposes a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the ladle car limit power monitoring method described above.

[0043] In addition, to achieve the above objectives, this application also provides a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the ladle car limit power monitoring method described above.

[0044] One or more technical solutions proposed in this application have at least the following technical effects:

[0045] First, the voltage signal of the limit power supply of the ladle car is obtained, which is the basis for subsequent judgments. Based on the obtained voltage signal, the status of the limit power supply is determined. When the limit power supply is faulty, the ladle car is prohibited from moving to prevent loss of control due to the limit power supply failure. When the limit power supply is normal, the ladle car is allowed to move, ensuring that the ladle car can operate normally under normal conditions. This application can prevent the ladle car from going out of its travel range when the limit power supply fails. Attached Figure Description

[0046] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0047] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a flowchart illustrating an embodiment of the steel ladle car limit power supply monitoring method of this application.

[0049] Figure 2 This is a flowchart illustrating Embodiment 2 of the steel ladle car limit power supply monitoring method of this application;

[0050] Figure 3 This is a schematic diagram of the module structure of the steel ladle car limit power monitoring device according to an embodiment of this application;

[0051] Figure 4 This is a schematic diagram of the equipment structure of the hardware operating environment involved in the ladle car limit power monitoring method in this application embodiment.

[0052] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0053] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0054] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0055] It should be noted that the executing entity in this application embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, or mobile phone, or an electronic device or PLC control system capable of performing the above functions. The following description uses a PLC control system as an example to illustrate this embodiment and the subsequent embodiments.

[0056] Based on this, this application provides a method for monitoring the limit power supply of a ladle car, referring to... Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the steel ladle car limit power monitoring method of this application.

[0057] In this embodiment, the ladle car limit power monitoring method includes steps S10 to S40:

[0058] Step S10: Obtain the voltage signal of the limit power supply of the ladle car.

[0059] It should be noted that the limit power supply refers to an independent DC power supply that provides the operating voltage for the travel limit switch and its circuit. In this system, it is led from a 24V DC bus through a fuse and terminal block to the limit switch. Its energized state directly determines whether the limit signal can be generated normally. The voltage signal refers to the 24V DC level formed when the positive terminal of the limit power supply returns to the PLC input terminal through the closed limit contact. The level of this signal is determined by the position of the limit switch and whether the power supply itself is de-energized, and is used to characterize whether the limit switch is activated and whether the limit power supply exists.

[0060] As an example, the step of acquiring the voltage signal of the limit power supply of the ladle car includes: acquiring the original voltage data of the limit power supply of the ladle car; performing low-pass filtering on the original voltage data to obtain filtered voltage data; converting the filtered voltage data into a digital voltage value through an analog-to-digital converter; and adjusting the digital voltage value based on a preset voltage calibration coefficient to obtain a voltage signal.

[0061] Raw voltage data refers to the instantaneous analog voltage value sampled directly from the positive and negative terminals of the limit power supply, without any filtering or amplitude adjustment. Its amplitude changes in real time with power supply fluctuations, contact bounce, and line interference. An analog-to-digital converter (ADC) is a circuit unit that quantizes continuously changing analog voltage into discrete digital codes at a fixed sampling frequency. It outputs an integer code proportional to the input voltage for the microprocessor to read. The digital voltage value is the integer code output by the ADC after one quantization operation. This code is in LSB (Least Significant Bit) units, and its value has a linear relationship with the filtered DC voltage, but it has not yet been converted to engineering units. The preset voltage calibration coefficient is a multiplication-addition correction parameter obtained by comparison with a standard voltage source. It is used to convert the integer code output by the ADC into a true volt value, compensating for reference drift, voltage divider error, and linear offset, so that the final result is consistent with the measured voltage.

[0062] First, the PLC control system continuously samples the output of the limit power supply through the analog input channel at a fixed sampling period (e.g., once every 1ms) to obtain the raw, unprocessed instantaneous voltage value, ensuring that no power outage or fluctuation events are missed. Then, the sampled value is fed into a first-order low-pass filter algorithm (e.g., cutoff frequency set to 30Hz, filter coefficient set to 0.1), using a weighted average of the current sampled value and the previous filtering result to filter out high-frequency noise introduced by contact bounce or electromagnetic interference, smoothing the voltage curve. Next, the filtered analog voltage is sent to the ADC (Analog-to-Digital Converter) module (e.g., 12-bit resolution, reference voltage 2.5V), where conversion is initiated after sampling and holding to obtain the corresponding digital code value, and then processed via DMA (Direct Memory Access). The data is stored in memory via Direct Memory Access (DMI) to avoid CPU blocking. Finally, the PLC performs a multiplication and addition operation on the digital code value using a preset calibration coefficient (e.g., slope coefficient 1.024, offset -12) to convert the original code value into an actual voltage signal in units of 0.1V.

[0063] Step S20: Determine the status of the limit power supply based on the voltage signal.

[0064] It should be noted that the limit power supply status refers to the current health status of the power supply for the limit circuit, specifically whether the voltage signal falls within the rated operating range, which is used to distinguish between normal power supply, undervoltage, power failure, or damage.

[0065] Understandably, the PLC control system compares the calibrated voltage signal with the preset threshold range in real time. If the result is consistently within the rated window, the "power supply normal" flag is set; otherwise, the flag is immediately cleared and the "power supply fault" status bit is triggered for use by subsequent interlocking logic.

[0066] Step S30: When the limit power supply is faulty, the ladle car is prohibited from moving.

[0067] As an example, the step of preventing the ladle car from moving when the limit power supply is faulty includes: setting the ladle car movement interlock flag to true when the limit power supply is faulty; generating a movement prohibition command based on the ladle car movement interlock flag; and sending the movement prohibition command to the drive controller so that the drive controller prevents the ladle car from moving.

[0068] The ladle car travel interlock indicator is a Boolean variable within the PLC control system. A true value indicates that the ladle car must be immediately stopped due to a limit power supply failure. The travel prohibition command is a control instruction generated by the PLC control system based on the interlock indicator being true, used to instruct the drive side to cut off the speed setpoint or enable signal. The drive controller is the frequency converter or servo driver that receives PLC instructions and directly controls the ladle car motor. Upon receiving the travel prohibition command, it executes torque blocking or brake application to prevent the vehicle from moving.

[0069] First, the PLC control system compares the voltage signal with the lower threshold in each scan cycle. Once the voltage falls below the threshold and remains below it (e.g., below 20.0V for three consecutive cycles), it immediately sets the "Ladle Car Travel Interlock Flag" register to 1 to ensure the fault state is locked. Then, the PLC reads the flag in the same cycle. If it is 1, it clears the "Enable Bit" in the travel control word, writes zero to the speed setpoint word, and sets the "Emergency Stop Request" bit, combining them into a 16-bit "Travel Prohibition Command," which is sent to the drive controller via a PROFINET (Real-Time Industrial Ethernet) frame. Finally, upon receiving the command, the drive controller immediately blocks the PWM (Pulse Width Modulation) output, cuts off the IGBT (Insulated Gate Bipolar Transistor) drive signal, and engages the motor brake, causing the ladle car to lose power and mechanically brake in the shortest possible time to prevent it from running out of its travel range due to inertial slippage.

[0070] As an example, the step of generating a walking prohibition command based on the ladle car walking interlock sign includes: generating an initial prohibition command according to the ladle car walking interlock sign and preset interlock condition configuration parameters; and encapsulating the initial prohibition command into a walking prohibition command when the binary value of the status identifier bit in the initial prohibition command is equal to a preset valid value.

[0071] The preset interlock condition configuration parameter refers to a 16-bit mask pre-written in the PLC control system. It tells the program which output bits should be modified when the interlock flag is true; bits with a mask value of 1 should be written to the "disable" level, while bits with a mask value of 0 remain unchanged. The status flag bit is a dedicated bit in the initial disable instruction, used to indicate whether the instruction is a "true disable." Its position is determined by the highest bit of the mask. The preset valid value is the "true disable" code defined by the program. The PLC control system only sends out the instruction when the status flag bit equals this value, for example, 1.

[0072] First, upon detecting a true "travel interlock flag," the PLC control system immediately reads the preset interlock configuration parameters, performs a bitwise XOR operation with the current output image area, and generates a new control word. This ensures that only permitted bits are modified, preventing accidental operation of other functions. Simultaneously, it sets the status flag to 1, forming an initial prohibition instruction to indicate that the instruction is valid. Second, the PLC checks if the value of the status flag bit in the initial prohibition instruction equals the preset valid value. If they are equal, the instruction is valid, and the program continues processing; otherwise, the instruction is discarded to prevent invalid or erroneous commands from being sent, ensuring system safety. Finally, the PLC copies the valid initial prohibition instruction verbatim to the communication transmission buffer, adds a CRC checksum, encapsulates it into a complete travel prohibition command frame, and sends it to the drive controller via the PROFINET protocol in the next communication cycle. This mechanism ensures the integrity and real-time nature of the command during transmission, enabling the drive controller to respond promptly and execute a stopping action, preventing the ladle car from continuing to move and causing an accident.

[0073] Step S40: When the limit power supply is in normal condition, the ladle car is allowed to move.

[0074] As an example, the step of allowing the ladle car to move when the limit power supply is in normal condition includes: setting the ladle car movement interlock flag to false when the limit power supply is in normal condition; generating a movement permission command based on the ladle car movement interlock flag; and sending the movement permission command to the drive controller so that the drive controller allows the ladle car to move.

[0075] The travel permission command is a 16-bit control word issued by the PLC when the interlock flag is false. The enable bit is set to 1, the speed setpoint is written to the target value and a check code is attached. After receiving the command, the drive controller resumes the PWM output and releases the brake, thus allowing the ladle car to move in the set direction.

[0076] After the PLC control system detects that the voltage signal is continuously higher than the threshold, it immediately clears the "travel interlock flag" to zero. Then, it writes the enable position 1 and speed setpoint in the control word into the current handle setting value, combines them into a travel permission command, and sends it through the PROFINET frame. After receiving the command, the drive controller reopens the IGBT drive and releases the brake, and the ladle car can move in the set direction.

[0077] This embodiment provides a method for monitoring the limit power supply of a ladle car. First, the PLC control system acquires the voltage signal of the limit power supply of the ladle car, which is the basis for subsequent judgments. Based on the acquired voltage signal, the status of the limit power supply is determined. When the limit power supply is faulty, the ladle car is prohibited from moving to prevent loss of control due to the limit power supply failure. When the limit power supply is normal, the ladle car is allowed to move, ensuring that the ladle car can operate normally under normal conditions. This embodiment can prevent the ladle car from going out of its travel range when the limit power supply fails.

[0078] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to that in Embodiment 1 above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 2 , Figure 2 This is a flowchart illustrating the second embodiment of the ladle car limit power monitoring method of this application. Step S20 of the ladle car limit power monitoring method includes steps S21 to S23:

[0079] Step S21: Obtain the current voltage value of the voltage signal.

[0080] It should be noted that the current voltage value refers to the digital result obtained by the PLC control system after sampling and calibration within this scan cycle, which represents the real-time output voltage of the limit power supply.

[0081] Step S22: When the current voltage value is less than the preset power supply fault threshold, the limit power supply is determined to be faulty.

[0082] It should be noted that the preset power supply fault threshold refers to the voltage threshold value written into the PLC parameter table in advance. When the actual voltage of the limit power supply is lower than this value, it is considered a fault.

[0083] As an example, the step of determining that the limit power supply is faulty when the current voltage value is less than a preset power supply fault threshold includes: calculating the voltage difference between the current voltage value and the preset power supply fault threshold; determining that the voltage signal is abnormal when the voltage difference is less than a preset tolerance threshold; and determining that the limit power supply is faulty when the voltage signal is abnormal for a preset duration.

[0084] The preset tolerance threshold refers to the maximum deviation allowed for the current voltage value to fall below the preset power supply fault threshold, used to avoid misjudgment caused by instantaneous fluctuations. The preset duration refers to the minimum time required for an abnormal voltage signal state to persist; only after this time is the limit power supply state confirmed as faulty, preventing erroneous judgments caused by brief interference.

[0085] First, in each scan cycle, the PLC control system subtracts the newly acquired current voltage value from the "preset power failure threshold" to obtain the voltage difference. It then performs a signed comparison with the "preset tolerance threshold." If the difference exceeds this tolerance (e.g., 0.5V), the "voltage abnormality" flag is immediately set to 1; otherwise, it is cleared to 0. This filters out minor fluctuations caused by analog-to-digital conversion quantization step size or transient interference. Next, the PLC control system starts a 16ms cumulative timer, continuously incrementing the flag as long as it is 1. When the accumulated value reaches the "preset timer" threshold... When the timer completes its set (e.g., 100ms), the "limit power status" register is officially written as fault, and the walking interlock logic is triggered simultaneously. This delayed confirmation can prevent spikes or drops shorter than 100ms from being mistaken for actual power failures. Finally, once the status is latched as fault, the PLC control system immediately sends a prohibition command to the drive side and holds it until the voltage is continuously normal and the timer returns to zero before unlocking. This ensures that the system only stops when there is a continuous undervoltage, which can prevent malfunctions and truly block the risk of overtravel caused by power failure.

[0086] Step S23: When the current voltage value is greater than or equal to the preset power supply fault threshold, the limit power supply status is determined to be normal.

[0087] Understandably, firstly, the PLC compares the newly obtained voltage value with the preset power failure threshold in the current scan cycle. If the condition is met, it immediately clears the "voltage abnormal" flag to 0 and stops the cumulative timer to prevent the aging timer from the previous cycle from continuing to accumulate. Then, in the same cycle, it writes the "limit power status" register to normal and resets the interlock flag to prepare for subsequent travel.

[0088] In this embodiment, the current voltage value of the limit power supply is first sampled to provide real-time basis for subsequent judgment. Then, the value is compared with the preset power supply fault threshold. If it is less than the threshold, the state is immediately determined to be faulty and the travel prohibition is triggered. If it is greater than or equal to the threshold, the state is determined to be normal and the interlock is released. This allows the control logic to switch instantly according to the power supply status, which can prevent the ladle car from going out of the travel range when the limit power supply fails.

[0089] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the steel ladle car limit power monitoring method of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0090] This application also provides a steel ladle car limit power supply monitoring device, please refer to... Figure 3 The ladle car limit power monitoring device includes:

[0091] Voltage acquisition module 10 is used to acquire the voltage signal of the limit power supply of the ladle car;

[0092] The status determination module 20 is used to determine the status of the limit power supply based on the voltage signal;

[0093] Safety lock control module 30 is used to prevent the ladle car from moving when the limit power supply is faulty;

[0094] The walking enable module 40 is used to allow the ladle car to move when the limit power supply is in normal condition.

[0095] The ladle car limit power supply monitoring device provided in this application, employing the ladle car limit power supply monitoring method in the above embodiments, can solve the technical problem of how to prevent the ladle car from going out of its travel range when the limit power supply fails. Compared with the prior art, the beneficial effects of the ladle car limit power supply monitoring device provided in this application are the same as those of the ladle car limit power supply monitoring method provided in the above embodiments, and other technical features in the ladle car limit power supply monitoring device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0096] This application provides a ladle car limit power monitoring device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the ladle car limit power monitoring method in the above embodiment 1.

[0097] The following is for reference. Figure 4 This document illustrates a structural schematic diagram suitable for implementing the ladle car limit power monitoring device in the embodiments of this application. The ladle car limit power monitoring device in the embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital radio receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Description), PMPs (Portable Media Players), vehicle terminals (e.g., vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 4The steel ladle car limit power monitoring device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0098] like Figure 4 As shown, the ladle car limit power monitoring device may include a processing unit 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to the program stored in ROM (Read Only Memory) 1002 or the program loaded from storage device 1003 into RAM (Random Access Memory) 1004. RAM 1004 also stores various programs and data required for the operation of the ladle car limit power monitoring device. The processing unit 1001, ROM 1002, and RAM 1004 are interconnected via bus 1005. Input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to I / O interface 1006: input devices 1007 including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 1008 including, for example, LCDs (Liquid Crystal Displays), speakers, vibrators, etc.; storage devices 1003 including, for example, magnetic tapes, hard disks, etc.; and communication devices 1009. Communication device 1009 allows the ladle car limit power monitoring equipment to exchange data wirelessly or via wired communication with other devices. Although ladle car limit power monitoring equipment with various systems is shown in the figure, it should be understood that it is not required to implement or possess all the systems shown. More or fewer systems can be implemented alternatively.

[0099] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from ROM 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0100] The ladle car limit power supply monitoring device provided in this application, employing the ladle car limit power supply monitoring method in the above embodiments, can solve the technical problem of how to prevent the ladle car from going out of its travel range when the limit power supply fails. Compared with the prior art, the beneficial effects of the ladle car limit power supply monitoring device provided in this application are the same as those of the ladle car limit power supply monitoring method provided in the above embodiments, and other technical features of this ladle car limit power supply monitoring device are the same as those disclosed in the previous embodiment method, and will not be repeated here.

[0101] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0102] The above description is merely a specific embodiment of this application, but the scope of protection of this application 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 this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0103] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the ladle car limit power monitoring method in the above embodiments.

[0104] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, RAM (Random Access Memory), ROM (Read Only Memory), EPROM (Erasable Programmable Read Only Memory or Flash Memory), optical fibers, CD-ROM (CD-Read Only Memory), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0105] The aforementioned computer-readable storage medium may be included in the ladle car limit power monitoring device; or it may exist independently and not be assembled into the ladle car limit power monitoring device.

[0106] The aforementioned computer-readable storage medium carries one or more programs. When the aforementioned one or more programs are executed by the ladle car limit power supply monitoring device, the ladle car limit power supply monitoring device causes the ladle car to: acquire the voltage signal of the limit power supply of the ladle car; determine the limit power supply status based on the voltage signal; prohibit the ladle car from moving when the limit power supply status is faulty; and allow the ladle car to move when the limit power supply status is normal.

[0107] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including LAN (Local Area Network) or WAN (Wide Area Network)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0108] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0109] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0110] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the above-described ladle car limit power supply monitoring method, which can solve the technical problem of how to prevent the ladle car from going out of its travel range when the limit power supply fails. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as the beneficial effects of the ladle car limit power supply monitoring method provided in the above embodiments, and will not be repeated here.

[0111] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the ladle car limit power monitoring method described above.

[0112] The computer program product provided in this application can solve the technical problem of how to prevent ladle cars from going out of their travel range when the limit power supply fails. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the ladle car limit power supply monitoring method provided in the above embodiments, and will not be repeated here.

[0113] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A method for monitoring the limit power supply of a ladle car, characterized in that, The method includes: Obtain the voltage signal of the limit power supply of the ladle car; The status of the limit power supply is determined based on the voltage signal. When the limit power supply is faulty, the ladle car is prohibited from moving. When the limit power supply is in normal condition, the ladle car is allowed to move.

2. The method as described in claim 1, characterized in that, The step of determining the limit power supply status based on the voltage signal includes: Obtain the current voltage value of the voltage signal; If the current voltage value is less than the preset power supply fault threshold, the limit power supply is determined to be faulty. When the current voltage value is greater than or equal to the preset power failure threshold, the limit power supply is determined to be in normal condition.

3. The method as described in claim 2, characterized in that, The step of determining that the limit power supply is faulty when the current voltage value is less than a preset power supply fault threshold includes: Calculate the voltage difference between the current voltage value and the preset power failure threshold; If the voltage difference is less than a preset tolerance threshold, the voltage signal is determined to be abnormal. If the voltage signal remains abnormal for a preset duration, the limit power supply is determined to be faulty.

4. The method as described in claim 1, characterized in that, The step of preventing the ladle car from moving when the limit power supply is faulty includes: When the limit power supply is faulty, the ladle car travel interlock sign is set to true; Based on the steel ladle car movement interlocking sign, a movement prohibition command is generated; The driving prohibition command is sent to the drive controller so that the drive controller prevents the ladle car from moving.

5. The method as described in claim 4, characterized in that, The step of generating a walking prohibition command based on the steel ladle car walking interlock sign includes: An initial prohibition command is generated based on the steel ladle car walking interlock sign and preset interlock condition configuration parameters; When the binary value of the status flag bit in the initial prohibition instruction is equal to a preset valid value, the initial prohibition instruction is encapsulated into a walking prohibition command.

6. The method as described in claim 1, characterized in that, The step of allowing the ladle car to move when the limit power supply is in normal condition includes: When the limit power supply is in normal condition, the ladle car travel interlock sign is set to false. Based on the steel ladle car walking interlocking sign, a walking permission command is generated; The travel permission command is sent to the drive controller so that the drive controller allows the ladle car to move.

7. The method according to any one of claims 1 to 6, characterized in that, The step of obtaining the voltage signal of the limit power supply of the ladle car includes: Collect the raw voltage data of the limit power supply of the ladle car; The original voltage data is subjected to low-pass filtering to obtain filtered voltage data; The filtered voltage data is converted into digital voltage values ​​using an analog-to-digital converter. The digital voltage value is adjusted based on a preset voltage calibration coefficient to obtain a voltage signal.

8. A power supply monitoring device for limit switches on a ladle car, characterized in that, The device includes: The voltage acquisition module is used to acquire the voltage signal of the limit power supply of the ladle car; The status determination module is used to determine the status of the limit power supply based on the voltage signal; The safety lock control module is used to prevent the ladle car from moving when the limit power supply is faulty; The walking enable module is used to allow the ladle car to move when the limit power supply is in a normal state.

9. A power supply monitoring device for limit switches on a ladle car, characterized in that, The device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the ladle car limit power monitoring method as described in any one of claims 1 to 7.

10. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, it implements the steps of the steel ladle car limit power monitoring method as described in any one of claims 1 to 7.

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