Management method and system for sling matching weight detection device

Abstract

The invention discloses a sling matching weight detection device management method and system, and relates to the technical field of hoisting machinery safety management and intelligent control, and the method comprises the steps: obtaining tonnage data, and converting the tonnage data into an analog quantity signal; the analog quantity signal is transmitted to a PLC through a wireless transmission technology; and the PLC compares the hoisting machinery weight tonnage analog quantity signal with the sling tonnage analog quantity signal to establish an overload alarm mechanism. According to the method, standardized expression of tonnage information of different sources is realized, and the consistency of data processing and the convenience of system integration are improved; efficient and stable transmission of tonnage signals in a complex operation environment is ensured, and the deployment flexibility and the anti-interference capability of the system are enhanced; dynamic verification of the sling matching performance and real-time identification of the overload risk are achieved, and therefore the safety and the intelligent level in the lifting operation process are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of safety management and intelligent control of lifting machinery, and specifically to a management method and system for a sling matching heavy object detection device. Background Art

[0002] With the continuous progress of industrialization and intelligent manufacturing technology, lifting machinery plays an increasingly important role in multiple fields such as construction, port transportation, mining, and large equipment installation. As a key accessory equipment of lifting machinery, the performance of slings is directly related to the safety and efficiency of lifting operations. Traditional sling management mainly relies on manual inspection, label identification, and visual confirmation methods, and the specification parameters of slings, such as rated load, material characteristics, service life, etc., are identified manually. However, with the expansion of the scale of lifting operations and the increase in the complexity of the operating environment, the management method relying solely on manual experience judgment has been difficult to meet the requirements of modern lifting operations for high safety, high efficiency, and intelligence. Therefore, the industry has gradually introduced electronic identification and information management means, such as using barcodes, RFID (Radio Frequency Identification), or NFC (Near Field Communication) technology to encode and identify sling information, realizing sling ledger management, usage traceability, and status monitoring. These identification technologies based on the Internet of Things have improved the transparency and traceability of sling management to a certain extent, but there are still obvious deficiencies in the real-time matching and verification ability during the lifting operation process, and it is impossible to make a dynamic linkage judgment on the actual lifting weight of the lifting machinery and the rated load-bearing capacity of the sling, resulting in potential overloading risks.

[0003] In recent years, with the rapid development of industrial Internet and intelligent control technology, the intelligent safety control system of lifting machinery has gradually become a research and application hotspot. For example, cranes are generally equipped with a Load Moment Indicator (LMI) that can monitor the load weight, boom amplitude, and lifting moment in real time to prevent equipment overturning or structural damage caused by overloading. Some advanced systems install weighing sensors at positions such as the hook, winch, and boom nodes to collect load data in real time and give early warnings. However, the protection logic of these current systems mainly focuses on the structural limits of the lifting machinery itself and does not incorporate the specification parameters of the sling as a dynamic judgment basis. As a result, in actual operations, although the lifting machinery itself is not overloaded, the selected sling has exceeded its rated service limit, and sling breakage accidents may still occur. In addition, the existing electronic identification technology for slings is usually used for information confirmation before construction and does not form a closed-loop control system linked to the real-time actions of the crane, lacking the ability to automatically determine whether the sling matches based on real-time load data during the lifting operation. Therefore, although certain progress has been made in sling management and crane protection respectively, the intelligent integration and linkage control between the two are still in their infancy and are difficult to meet the requirements for intrinsic safety guarantee in high-risk and high-value lifting operations. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention is proposed.

[0005] Therefore, the technical problems solved by the present invention are: the insufficient verification of the matching between the sling and the actual load weight in the prior art, the lack of a real-time linkage comparison mechanism, and the problem of the risk of overloading the sling; and how to realize obtaining tonnage data, converting it into an analog signal, wirelessly transmitting it to the PLC, and based on the PLC, comparing the real-time signals of the sling tonnage and the actual tonnage of the heavy object, dynamically establishing an overload alarm mechanism, so as to effectively improve the sling matching verification ability and operation safety during the lifting operation.

[0006] To solve the above technical problems, the present invention provides the following technical solutions, a management method for a sling matching heavy object detection device, including: obtaining tonnage data, converting the tonnage data into an analog signal; transmitting the analog signal to the PLC through wireless transmission technology; the PLC compares the analog signal of the heavy object tonnage of the hoisting machinery with the analog signal of the sling tonnage, and establishes an overload alarm mechanism; the wireless transmission technology discretely samples the analog signals of the sling tonnage and the heavy object tonnage, converts them into digital encoded data, attaches an error check field to the digital encoded data, forms a data packet with a protection mechanism, encrypts and packages the data packet, and sends it to the PLC end through a wireless channel. At the PLC end, the received data packet is verified. If a verification error is detected, a retransmission request is triggered. When continuous retransmission fails, an abnormal detection signal is generated, and the hoisting operation is prohibited; the overload alarm mechanism includes the PLC receiving the analog signals of the sling tonnage and the heavy object tonnage, respectively corresponding the two signals to the standard amplitudes within the preset range. The PLC continuously compares the two standard amplitudes. If the amplitude of the actual heavy object tonnage signal is less than or equal to the amplitude of the sling tonnage signal, a hoisting permission signal is output. If the amplitude of the actual heavy object tonnage signal is greater than the amplitude of the sling tonnage signal, a hoisting prohibition signal is output, and the overload alarm device is triggered for audible and visual alarm prompts.

[0007] As a preferred solution of the management method for the sling matching heavy object detection device described in the present invention, wherein: the tonnage data includes sling tonnage data and actual heavy object tonnage data.

[0008] As a preferred solution of the management method for the sling matching heavy object detection device described in the present invention, wherein: the obtaining of the tonnage data includes collecting the barcode image on the surface of the sling through a handheld terminal, performing image preprocessing on the collected barcode image, and parsing the sling tonnage data through a preset algorithm.

[0009] By setting a weighing sensor at the stress part of the hoisting machinery, the actual heavy object tonnage data is detected in real time.

[0010] As a preferred solution of the management method for the sling matching heavy object detection device described in the present invention, wherein: the converting of the tonnage data into an analog signal includes setting a mapping relationship according to the sling tonnage data, and according to the mapping relationship, converting the tonnage value into an analog signal of the sling tonnage.

[0011] Set a corresponding relationship according to the actual heavy object tonnage data, and convert the actual heavy object tonnage data into a corresponding analog signal of the heavy object tonnage.

[0012] Adjust the analog signals of the sling tonnage and the heavy object tonnage to the standard amplitudes that meet the wireless transmission requirements, and perform filtering processing on the adjusted analog signals.

[0013] As a preferred solution of the management method of the sling matching heavy object detection device according to the present invention, wherein: the wireless transmission technology includes discretely sampling the sling tonnage analog signal and the heavy object tonnage analog signal, converting them into digital encoded data, generating an error check code for the digital encoded data, adding a check field to form a data packet with a protection mechanism, encrypting and encapsulating the data packet using a wireless communication protocol to form a data format for wireless transmission, and sending the encrypted and encapsulated data packet to the PLC end through a wireless channel, and verifying the received data packet at the receiving end.

[0014] If a check error is detected in the data packet, a retransmission request is automatically triggered. When no valid data packet is received or continuous retransmission fails, an abnormal detection signal is generated, and the lifting operation is prohibited.

[0015] As a preferred solution of the management method of the sling matching heavy object detection device according to the present invention, wherein: the comparison by the PLC between the heavy object tonnage analog signal and the sling tonnage analog signal of the hoisting machinery includes receiving, by the PLC, the verified sling tonnage analog signal and the heavy object tonnage analog signal, corresponding them to the standard amplitudes within a preset range, and the PLC comparing in real time the amplitude of the sling tonnage analog signal with the amplitude of the heavy object tonnage analog signal based on the size relationship of the standard amplitudes.

[0016] If the amplitude of the heavy object tonnage analog signal is less than or equal to the amplitude of the sling tonnage analog signal, it is determined to be in a normal load state.

[0017] If the amplitude of the heavy object tonnage analog signal is greater than the amplitude of the sling tonnage analog signal, it is determined to be in an overloaded state.

[0018] As a preferred solution of the management method of the sling matching heavy object detection device according to the present invention, wherein: the overload alarm mechanism includes that when it is determined to be in a normal load state, the PLC outputs a lifting permission signal to control the hoisting machinery to perform the lifting action normally.

[0019] When it is determined to be in an overloaded state, the PLC outputs a lifting prohibition signal to block the lifting control loop and trigger the overload alarm device to give an audible and visual alarm prompt.

[0020] Another object of the present invention is to provide a management system for a sling matching heavy object detection device, which can collect tonnage data and convert it into an analog signal, send the signal to the PLC end by wireless transmission, the PLC compares in real time the amplitudes of the sling tonnage signal and the actual heavy object tonnage signal, controls the lifting action and triggers an overload alarm, so as to solve the problems of insufficient verification of the matching between the sling and the heavy object and lag in overload identification.

[0021] As a preferred solution of the sling matching heavy object detection device management system described in the present invention, it includes: a data acquisition and conversion module, a wireless transmission module, and a comparison and control module; the data acquisition and conversion module includes a data acquisition unit and a signal conversion unit. The data acquisition unit is used to acquire the sling tonnage data and the actual tonnage data of the heavy object, and the signal conversion unit is used to convert the acquired sling tonnage data and the actual tonnage data of the heavy object into standard analog signals respectively according to the preset range mapping relationship for subsequent wireless transmission; the wireless transmission module includes an encoding and encryption unit and a sending and receiving unit. The encoding and encryption unit is used to perform discrete sampling on the converted analog signal, generate digital encoding data, and append an error check field, and form a data packet with a protection mechanism through encryption and encapsulation. The sending and receiving unit is used to send the encrypted and encapsulated data packet to the PLC end through a wireless channel, and perform integrity verification on the received data packet at the PLC end, and trigger retransmission or generate an anomaly detection signal when an anomaly occurs; the comparison and control module includes a signal comparison unit and a control output unit. The signal comparison unit resolves the received sling tonnage analog signal and the heavy object tonnage analog signal to the standard amplitude respectively through the PLC, and performs real-time comparison based on the standard amplitude to judge whether there is overloading. The control output unit is used to judge whether there is overloading according to the comparison result. If it is judged that the load is normal, a hoisting permission signal is output; if it is judged that there is overloading, a hoisting prohibition signal is output and an overloading alarm device is triggered for audible and visual alarm prompts.

[0022] A computer device includes a memory and a processor. The memory stores a computer program. It is characterized in that when the processor executes the computer program, the steps of any one of the methods in the sling matching heavy object detection device management method are implemented.

[0023] A computer-readable storage medium stores a computer program. It is characterized in that when the computer program is executed by a processor, the steps of any one of the methods in the sling matching heavy object detection device management method are implemented.

[0024] Advantages of the present invention: By collecting the tonnage data of sling tools and the actual tonnage data of heavy objects, and uniformly converting the tonnage data into standard analog signals, the standardized expression of tonnage information from different sources is achieved, improving the consistency of data processing and the convenience of system integration; By adopting wireless transmission technology, the converted analog signals are sent to the PLC side after being sealed, ensuring the efficient and stable transmission of tonnage signals in complex working environments, enhancing the deployment flexibility and anti-interference ability of the system; By the PLC receiving two analog signals and comparing their standard amplitudes in real time, an overload alarm mechanism based on tonnage comparison is established, realizing the dynamic verification of the matching of sling tools and the real-time identification of overload risks, thereby effectively improving the safety and intelligence level during the hoisting operation. In summary, the present invention not only optimizes the safety management mode during the use of sling tools, but also significantly reduces the probability of overload accidents, having a remarkable effect of improving intrinsic safety and good engineering application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 It is a schematic flowchart of the management method of the sling tool matching heavy object detection device provided by the first embodiment of the present invention.

[0027] Figure 2 It is an overall schematic diagram of the sling tool matching heavy object detection device management system provided by the second embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed embodiments of the present invention with reference to the drawings of the specification. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1, referring to Figure 1 , which is the first embodiment of the present invention. This embodiment provides a management method for a sling tool matching heavy object detection device, including: S1: Obtain tonnage data and convert the tonnage data into analog signals.

[0030] Further, the tonnage data includes the tonnage data of sling tools and the actual tonnage data of heavy objects.

[0031] Further, obtaining the tonnage data includes collecting the barcode image on the surface of the sling through a handheld terminal, performing image preprocessing on the collected barcode image, and parsing the tonnage data of the sling through a preset algorithm.

[0032] By setting a weighing sensor at the stress-bearing part of the lifting machinery, the actual tonnage data of the heavy object is detected in real time.

[0033] It should also be noted that performing image preprocessing on the collected barcode image includes converting the collected color barcode image into a grayscale image, expressed as: ; Among them, represents the grayscale value of the pixel at the coordinate of the barcode image, represents the red channel value of the pixel at the coordinate of the barcode image, represents the green channel value of the pixel at the coordinate of the barcode image, represents the blue channel value of the pixel at the coordinate of the barcode image, represents the horizontal and vertical coordinate positions of the barcode image pixels on the two-dimensional plane, and the coefficients 0.299, 0.587, and 0.114 are standard RGB weighting coefficients for converting a color image into a grayscale image.

[0034] Edge extraction is performed on the barcode grayscale image through an edge detection algorithm to obtain the edge image of the barcode area, expressed as: ; Among them, represents the edge intensity value of the pixel at the coordinate of the barcode grayscale image, represents the double-threshold discrimination function, represents convolution, represents the horizontal edge convolution kernel for detecting the edges in the horizontal direction of the image, represents the vertical edge convolution kernel for detecting the edges in the vertical direction of the image.

[0035] Based on the edge image extracted from the barcode grayscale image, the specific area of the barcode is located. Within the located barcode area, the data information in the barcode is decoded by identifying the stripe structure of the barcode, expressed as: ; Among them, is the data stream obtained by decoding, including the tonnage information field of the sling, Barcode decoding function. In the present invention, the encoding execution standard is EAN-13.

[0036] The tonnage information field of the sling is extracted from the decoded data stream and represented as: ; Among them, represents the rated tonnage value of the sling extracted from the barcode, represents the mapping function used to convert the field value into a specific tonnage value, represents the sub-field from the th bit to the th bit in the data stream.

[0037] A weighing sensor is set at the stressed part of the hoisting machinery. The stressed part can be key structural nodes such as the hook, hanger, root of the boom, or base of the wire rope winch. The weighing sensor is used to sense the tension or pressure applied to the hoisting mechanism in real time during the hoisting operation.

[0038] Furthermore, converting the tonnage data into an analog signal includes setting a mapping relationship according to the sling tonnage data, and converting the tonnage value into a sling tonnage analog signal according to the mapping relationship.

[0039] Set the corresponding relationship according to the actual tonnage data of the heavy object, and convert the actual tonnage data of the heavy object into the corresponding heavy object tonnage analog signal.

[0040] Adjust the sling tonnage analog signal and the heavy object tonnage analog signal to the standard amplitude that meets the requirements of wireless transmission, and perform filtering processing on the adjusted analog signal.

[0041] It should also be noted that the set mapping relationship is expressed as: ; Among them, represents the sling tonnage analog signal, represents the minimum voltage or current value of the analog output, represents the minimum value of the sling tonnage, the maximum value of the sling tonnage, represents the maximum voltage or current value of the analog output.

[0042] The present invention converts the actual tonnage data of the heavy object obtained by real-time detection into a standard analog signal format by setting a corresponding relationship. In the initial configuration stage, according to the range of the equipped weighing sensor, a tonnage value range of the heavy object is preset, and this range is mapped to a standard analog signal output range. A preferred solution for the tonnage value range of the heavy object is: 1 ton to 10 tons. In typical industrial sites such as factories, warehouses, and ports, the single-point lifting tonnage involved in most lifting operations is concentrated between 1 ton and 10 tons. Especially when cooperating with common tools such as chain slings, wire rope slings, and flexible slings, when performing analog signal mapping (such as 0–10V or 4–20mA) within the preferred range of the present invention, each ton can be divided into an equally spaced signal output amplitude range, which can make full use of the bit width of the A / D converter to improve the linear accuracy and comparison reliability of the analog signal.

[0043] S2: Transmit the analog signal to the PLC through wireless transmission technology.

[0044] Furthermore, the wireless transmission technology includes discretely sampling the analog signals of the sling tonnage and the heavy object tonnage, converting them into digital encoded data, generating an error check code for the digital encoded data, adding a check field to form a data packet with a protection mechanism, encrypting and encapsulating the data packet using a wireless communication protocol to form a data format for wireless transmission, and sending the encrypted and encapsulated data packet to the PLC end through a wireless channel, and verifying the received data packet at the receiving end.

[0045] If it is detected that the data packet has a verification error, a retransmission request is automatically triggered. When no valid data packet is received or consecutive retransmission fails, an abnormal detection signal is generated and the lifting operation is prohibited.

[0046] It should also be noted that the analog signals of the sling tonnage and the heavy object tonnage collected are respectively subjected to discrete sampling processing, and are converted into digital coded data through an analog-to-digital conversion circuit, converting the continuous analog signal into numerical data that can be recognized and transmitted by the digital system, so as to facilitate subsequent coding, encryption, and transmission processing. An error check algorithm (such as CRC cyclic redundancy check) is used to perform coding processing on the digital coded data to generate a check field with error detection capabilities. The check field and the original coded data together form a complete data packet to ensure that data errors can be detected in a timely manner during wireless transmission. The preset wireless communication protocol (LoRa protocol) is used to encrypt and encapsulate the data packet to form a wireless transmission format with a standardized structure, identity recognition, and redundancy protection. The above-mentioned encrypted and encapsulated data packet is sent to the wireless receiving module at the PLC end through a wireless communication module. At the PLC receiving end, the received data packet is unpacked in real time, and the preset verification mechanism is used to perform integrity verification on the content of the data packet. If the PLC detects that there is a verification error in the data packet or fails to obtain a valid data packet after receiving a timeout, a retransmission request signal will be immediately triggered to notify the sending end to resend the corresponding data packet. If the continuous retransmission fails (more than the set threshold of 3 times), the system will automatically generate an anomaly detection signal and execute a safety blocking strategy to prohibit the hoisting mechanism from further lifting operations to prevent operation hazards caused by data anomalies.

[0047] S3: The PLC compares the analog signals of the heavy object tonnage and the sling tonnage of the hoisting machinery and establishes an overload alarm mechanism.

[0048] Furthermore, the PLC comparing the analog signals of the heavy object tonnage and the sling tonnage of the hoisting machinery includes receiving, through the PLC, the verified analog signals of the sling tonnage and the heavy object tonnage, corresponding them to the standard amplitudes within the preset range, and the PLC, based on the magnitude relationship of the standard amplitudes, compares the amplitude of the analog signal of the sling tonnage with the amplitude of the analog signal of the heavy object tonnage in real time.

[0049] If the amplitude of the analog signal of the heavy object tonnage is less than or equal to the amplitude of the analog signal of the sling tonnage, it is judged as the normal load state.

[0050] If the amplitude of the analog signal of the heavy object tonnage is greater than the amplitude of the analog signal of the sling tonnage, it is judged as the overload state.

[0051] Even further, the overload alarm mechanism includes that when it is judged as the normal load state, the PLC outputs a lifting permission signal to control the hoisting machinery to perform the lifting action normally.

[0052] When it is judged as the overload state, the PLC outputs a lifting prohibition signal to block the lifting control loop and trigger the overload alarm device to give an audible and visual alarm prompt.

[0053] It should also be noted that the PLC receives the analog signals of the sling tonnage and the heavy object tonnage respectively. The PLC uniformly processes the two signals into the form of standard amplitudes, and based on the preset standard amplitude mapping relationship, establishes a unified comparison benchmark. The PLC performs real-time amplitude comparison on the above two analog signals to determine whether the current lifting load exceeds the safety tonnage threshold that the sling can bear. Specifically, when it is detected that the amplitude of the analog signal of the heavy object tonnage is less than or equal to the amplitude of the analog signal of the sling tonnage, the PLC determines that the current state is a normal load state, outputs an allowable lifting signal, and controls the lifting machinery to perform a normal lifting operation; if the amplitude of the analog signal of the heavy object tonnage is greater than the amplitude of the analog signal of the sling tonnage, the PLC determines it as an overloaded state, outputs a lifting prohibition signal, simultaneously cuts off the lifting control circuit of the crane, and automatically triggers an overload alarm device for audible and visual prompts to prompt the operator to intervene immediately.

[0054] Example 2, referring to Figure 2 , which is an embodiment of the present invention, provides a management system for a sling matching heavy object detection device, including a data acquisition and conversion module 100, a wireless transmission module 200, and a comparison and control module 300.

[0055] Wherein S4: The data acquisition and conversion module 100 includes a data acquisition unit 101 and a signal conversion unit 102. The data acquisition unit 101 is used to acquire the sling tonnage data and the actual tonnage data of the heavy object. The signal conversion unit 102 is used to convert the acquired sling tonnage data and the actual tonnage data of the heavy object into standard analog signals respectively according to the preset range mapping relationship for subsequent wireless transmission.

[0056] It should also be noted that the data acquisition unit 101 obtains the sling tonnage data and the actual tonnage data of the heavy object in real time, and transmits the original data to the signal conversion unit 102.

[0057] S5: The wireless transmission module 200 includes an encoding and encryption unit 201 and a sending and receiving unit 202. The encoding and encryption unit 201 is used to perform discrete sampling on the converted analog signal, generate digital encoded data, and attach an error check field, and form a data packet with a protection mechanism through encryption and encapsulation. The sending and receiving unit 202 is used to send the encrypted and encapsulated data packet to the PLC end through a wireless channel, and perform integrity verification on the received data packet at the PLC end, and trigger retransmission or generate an anomaly detection signal when an anomaly occurs.

[0058] It should also be noted that the encoding and encryption unit 201 performs discrete sampling and digital encoding on the analog signal, attaches a check field to form a secure data packet, and transmits the data packet to the sending and receiving unit 202. The sending and receiving unit 202 sends the data packet to the comparison and control module 300 through a wireless communication channel.

[0059] S6: The comparison and control module 300 includes a signal comparison unit 301 and a control output unit 302. The signal comparison unit 301 respectively analyzes the sling tonnage analog signal and the heavy object tonnage analog signal received through the PLC to the standard amplitude, and based on the standard amplitude, makes a real-time comparison to determine whether there is overloading. The control output unit 302 is used to determine whether there is overloading according to the comparison result. If it is determined that the load is normal, a hoisting permission signal is output; if it is determined that there is overloading, a hoisting prohibition signal is output and an overloading alarm device is triggered for audible and visual alarm prompts.

[0060] It should also be noted that the signal comparison unit 301 receives and analyzes the sling tonnage analog signal and the heavy object tonnage analog signal, and the control output unit 302 outputs control instructions according to the judgment result.

Claims

1. Management method for sling matching heavy object detection device, characterized in that: Including: Obtain tonnage data and convert the tonnage data into analog signals; Transmit the analog signals to the PLC through wireless transmission technology; The PLC compares the analog signals of the heavy object tonnage of the hoisting machinery with the analog signals of the sling tonnage, and establishes an overload alarm mechanism; The wireless transmission technology discretely samples the analog signals of the sling tonnage and the heavy object tonnage, converts them into digital encoded data, attaches an error check field to the digital encoded data to form a data packet with a protection mechanism, encrypts and packages the data packet, and sends it to the PLC end through a wireless channel. At the PLC end, the received data packet is verified. If a verification error is detected, a retransmission request is triggered. When continuous retransmission fails, an anomaly detection signal is generated, and the hoisting operation is prohibited; The overload alarm mechanism includes the PLC receiving the analog signals of the sling tonnage and the heavy object tonnage, corresponding the two signals to the standard amplitudes within the preset range, and the PLC compares the two standard amplitudes in real time. If the amplitude of the actual heavy object tonnage signal is less than or equal to the amplitude of the sling tonnage signal, a hoisting permission signal is output. If the amplitude of the actual heavy object tonnage signal is greater than the amplitude of the sling tonnage signal, a hoisting prohibition signal is output, and the overload alarm device is triggered for audible and visual alarm prompts.

2. The management method of the sling matching heavy object detection device according to claim 1, characterized in that: The tonnage data includes sling tonnage data and actual heavy object tonnage data.

3. The management method of the sling matching heavy object detection device according to claim 1 or 2, characterized in that: The obtaining of the tonnage data includes collecting the barcode image on the surface of the sling through a handheld terminal, performing image preprocessing on the collected barcode image, and parsing the sling tonnage data through a preset algorithm; By setting weighing sensors at the stress parts of the hoisting machinery, the actual heavy object tonnage data is detected in real time.

4. The management method of the sling matching heavy object detection device according to claim 3, characterized in that: The conversion of the tonnage data into analog signals includes setting a mapping relationship according to the sling tonnage data, and converting the tonnage value into an analog signal of the sling tonnage according to the mapping relationship; Set a corresponding relationship according to the actual heavy object tonnage data, and convert the actual heavy object tonnage data into a corresponding analog signal of the heavy object tonnage; Adjust the analog signals of the sling tonnage and the heavy object tonnage to the standard amplitudes that meet the wireless transmission requirements, and filter the adjusted analog signals.

5. The management method of the sling matching heavy object detection device according to claim 4, characterized in that: The wireless transmission technology includes discretely sampling the analog signals of the sling tonnage and the heavy object tonnage, converting them into digital encoded data, generating an error check code for the digital encoded data, attaching a check field to form a data packet with a protection mechanism, encrypting and packaging the data packet using a wireless communication protocol to form a data format for wireless transmission, and sending the encrypted and packaged data packet to the PLC end through a wireless channel, and verifying the received data packet at the receiving end; If a verification error is detected in the data packet, a retransmission request is automatically triggered. When a valid data packet is not received or continuous retransmission fails, an anomaly detection signal is generated, and the hoisting operation is prohibited.

6. The management method of the sling matching heavy object detection device according to claim 5, characterized in that: The PLC's comparison of the analog signals of the heavy object tonnage of the hoisting machinery and the sling tonnage includes receiving, via the PLC, the calibrated analog signals of the sling tonnage and the heavy object tonnage, corresponding them to the standard amplitudes within the preset range. Based on the magnitude relationship of the standard amplitudes, the PLC compares in real time the amplitude of the sling tonnage analog signal with the amplitude of the heavy object tonnage analog signal; If the amplitude of the heavy object tonnage analog signal is less than or equal to the amplitude of the sling tonnage analog signal, it is judged to be in a normal load state; If the amplitude of the heavy object tonnage analog signal is greater than the amplitude of the sling tonnage analog signal, it is judged to be in an overloaded state.

7. The management method of the sling matching heavy object detection device according to claim 6, characterized in that: The overload alarm mechanism includes that when it is judged to be in a normal load state, the PLC outputs a hoisting permission signal to control the hoisting machinery to perform the hoisting action normally; When it is judged to be in an overloaded state, the PLC outputs a hoisting prohibition signal to block the hoisting control loop and trigger the overload alarm device to give an audible and visual alarm prompt.

8. Hoisting tackle matching heavy object detection device management system, characterized in that: It includes a data acquisition and conversion module (100), a wireless transmission module (200), and a comparison and control module (300); The data acquisition and conversion module (100) includes a data acquisition unit (101) and a signal conversion unit (102). The data acquisition unit (101) is used to acquire the sling tonnage data and the actual heavy object tonnage data. The signal conversion unit (102) is used to convert the acquired sling tonnage data and the actual heavy object tonnage data into standard analog signals respectively according to the preset range mapping relationship for subsequent wireless transmission; The wireless transmission module (200) includes an encoding and encryption unit (201) and a sending and receiving unit (202). The encoding and encryption unit (201) is used to perform discrete sampling on the converted analog signal to generate digital encoded data, and append an error check field, and form a data packet with a protection mechanism through encryption and encapsulation. The sending and receiving unit (202) is used to send the encrypted and encapsulated data packet to the PLC end through the wireless channel, and perform integrity verification on the received data packet at the PLC end, and trigger retransmission or generate an anomaly detection signal when an anomaly occurs; The comparison and control module (300) includes a signal comparison unit (301) and a control output unit (302). The signal comparison unit (301) resolves the received sling tonnage analog signal and the heavy object tonnage analog signal to the standard amplitudes respectively through the PLC, and makes a real-time comparison based on the standard amplitudes to judge whether there is an overload. The control output unit (302) is used to judge whether there is an overload according to the comparison result. If it is judged to be a normal load, it outputs a hoisting permission signal; if it is judged to be overloaded, it outputs a hoisting prohibition signal and triggers the overload alarm device to give an audible and visual alarm prompt.

9. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the management method of the sling matching heavy object detection device according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the management method of the sling matching heavy object detection device according to any one of claims 1 to 7.

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