Equipment monitoring digital early warning system and method

Abstract

The invention relates to an equipment monitoring digital early warning system and method, and belongs to the technical field of equipment monitoring, and the system comprises a sensor module which comprises a plurality of sensors disposed at preset positions of to-be-monitored equipment; the monitoring module is configured to monitor the equipment data collected by the plurality of sensors; based on the early warning threshold value, monitoring the equipment data collected by a single sensor according to a first strategy in a monitoring time period to obtain a first monitoring result, and updating the early warning threshold value and the duration of the monitoring time period when the first monitoring result is abnormal each time; processing the equipment data collected by the plurality of sensors according to a second strategy based on an early warning threshold which is kept updated under the first strategy to obtain a second monitoring result; and the early warning module is configured to output a single-stage warning signal when the first monitoring result is abnormal and output a comprehensive warning signal when the second monitoring result is abnormal, so that an operator can receive effective early warning information more timely for corresponding processing.

Description

Technical Field

[0001] This invention relates to a digital early warning system and method for equipment monitoring, belonging to the field of equipment monitoring technology. Background Technology

[0002] Most existing early warning systems rely on recording data collected by sensors to generate alerts. An alarm is triggered when the data exceeds a warning threshold. However, in practice, this generates numerous interfering alarm signals, affecting not only operator judgment but also disrupting normal equipment operation. This is because, firstly, sensors may exhibit abnormal values, causing momentary spikes in data exceeding the warning threshold. Secondly, the complex nature of the operation often involves short-term overload conditions, which may cause a sensor to show a slight spike in data exceeding the warning threshold at a specific moment or for a short period. In reality, the equipment is usually within its safe operating range, and issuing an alarm in these situations would negatively impact normal operations. Summary of the Invention

[0003] The purpose of this invention is to provide a digital early warning system and method for equipment monitoring. The system monitors equipment data collected by a single sensor through a first strategy with an early warning threshold update mechanism. It can effectively avoid generating interference alarm signals while timely identifying potential risks and issuing early warnings. Furthermore, it adopts a second strategy to perform multi-level alarms through updated early warning thresholds, thereby timely identifying the serious risks that may exist when multiple sensors exceed limits simultaneously.

[0004] In a first aspect, the present invention provides a digital early warning system for equipment monitoring, comprising: The sensor module includes multiple sensors that are respectively arranged at preset positions on the device to be monitored; The monitoring module is configured to monitor device data collected by the multiple sensors; based on an early warning threshold, monitor the device data collected by a single sensor according to a first strategy during the monitoring period to obtain a first monitoring result, and update the early warning threshold and monitoring period duration each time the first monitoring result is abnormal; based on the early warning threshold kept updated under the first strategy, process the device data collected by multiple sensors according to a second strategy to obtain a second monitoring result; The early warning module is configured to output a single-level alarm signal when the first monitoring result is abnormal, and to output a comprehensive alarm signal when the second monitoring result is abnormal.

[0005] Optionally, the first monitoring result obtained by monitoring the device data collected by a single sensor according to the first strategy includes: If the cumulative duration of the device data collected by the sensor exceeding the warning threshold reaches a preset duration threshold, or the cumulative number of times the device data collected by the sensor exceeds the warning threshold reaches a preset number threshold, the current time is recorded as the alarm time, and the first monitoring result is determined to be abnormal; otherwise, the first monitoring result is determined to be normal.

[0006] Optionally, the preset duration threshold and the preset number threshold are positively correlated with the duration of the monitoring period.

[0007] Optionally, when the first monitoring result is determined to be abnormal, the early warning module outputs a single-level alarm signal; in response to the single-level alarm signal, the actuators related to the abnormal sensor are automatically adjusted according to the first processing rule, and after the automatic adjustment is completed, the early warning threshold and monitoring period duration are updated and the next monitoring period begins.

[0008] Optionally, updating the warning threshold and monitoring period duration includes: The monitoring period is divided into multiple consecutive monitoring intervals; The monitoring interval to which the alarm time belongs is determined as the target interval; The alarm level is determined based on the target range; The warning threshold and monitoring period duration are updated according to the alarm level. During the update, the reduction ratio of the warning threshold and the shortening ratio of the next monitoring period are both positively correlated with the alarm level.

[0009] Optionally, while updating the warning threshold, the duration of the next monitoring period is also updated, and the shortening ratio of the monitoring period duration during the update is positively correlated with the alarm level.

[0010] Optionally, processing the device data collected by multiple sensors according to the second strategy to obtain the second monitoring result includes: A danger threshold above the warning threshold is set, wherein the danger threshold is a preset multiple of the warning threshold; If a preset number of device data points collected by multiple sensors exceed the corresponding warning threshold, and none of the device data points exceed the corresponding danger threshold, then the second monitoring result is determined to be slightly abnormal. If a preset number of device data points collected by multiple sensors exceed the corresponding warning threshold, or if one sensor collects device data that exceeds the danger threshold, then the second monitoring result is determined to be severely abnormal. Otherwise, the second monitoring result is determined to be normal.

[0011] Optionally, when the second monitoring result is slightly abnormal, the early warning module outputs a slight comprehensive alarm signal. In response to the slight comprehensive alarm signal, the module automatically adjusts the actuators related to all abnormal sensors according to the second processing rules, and records the changes in device data collected by the abnormal sensors every preset time. If the second monitoring result is still slightly abnormal after the preset adjustment time, all operations are immediately stopped and a comprehensive inspection is carried out. When the second monitoring result is severely abnormal, the early warning module outputs a severe comprehensive alarm signal. In response to the severe comprehensive alarm signal, all operations are immediately stopped and a comprehensive inspection is carried out.

[0012] Optionally, the sensor includes: A tension sensor is placed at the load-bearing connection point of the equipment to collect the load. A laser rangefinder sensor is placed on the lifting path of the equipment's lifting components to collect the height and speed of the lifting components; Tilt sensors are placed on the rotating components of the equipment to collect tilt angles.

[0013] Optionally, the mathematical expression for obtaining the second monitoring result by processing the device data collected by multiple sensors according to the second strategy is as follows: ; in, For constructor, It is a unit step function. It outputs 1 when the independent variable x > 0, and 0 otherwise. Alert level indicates the output value of multi-level alarms. Indicates load capacity. This indicates the updated warning threshold corresponding to the load capacity. Indicates altitude, This indicates the updated warning threshold corresponding to the height. Indicates speed, This indicates the updated warning threshold corresponding to the speed. Indicates the angle of inclination. This indicates the updated warning threshold corresponding to the tilt angle.

[0014] Secondly, the present invention provides a digital early warning method for equipment monitoring, comprising: Monitor device data collected by multiple sensors; Based on the early warning threshold, the device data collected by a single sensor is monitored according to the first strategy during the monitoring period to obtain the first monitoring result, and the early warning threshold and monitoring period duration are updated each time the first monitoring result is abnormal; Based on the updated early warning threshold under the first strategy, the second monitoring result is obtained by processing the device data collected by multiple sensors according to the second strategy. When the first monitoring result is abnormal, a single-level alarm signal is output, and when the second monitoring result is abnormal, a comprehensive alarm signal is output.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: This invention monitors equipment data collected by a single sensor during a monitoring period using a first strategy with an early warning threshold update mechanism. This avoids interference alarms triggered by momentary or short-term exceedances of the sensor's collected data. For sensors that have already issued alarms, the real-time updated early warning threshold enables early detection of potential problems and triggers warnings as quickly as possible. Furthermore, based on the continuously updated early warning threshold, a second strategy is employed for multi-level alarms, thereby promptly identifying the serious risks that may arise when multiple sensors simultaneously exceed limits. This invention, through single-level alarms under the first strategy and multi-level alarms under the second strategy, allows operators to receive effective early warning information more promptly when equipment problems occur, enabling them to take appropriate action. Attached Figure Description

[0016] Figure 1 The diagram shows a structural schematic of a digital early warning system for equipment monitoring. Detailed Implementation

[0017] It should be noted that the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations thereof. Where there is no conflict, the embodiments and technical features in the embodiments can be combined with each other. The term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0018] Combination Figure 1 This embodiment provides a digital early warning system for equipment monitoring, comprising a sensor module, a monitoring module, and an early warning module connected via wireless communication equipment. The monitoring module includes a monitoring screen and a control box. The sensor module includes multiple sensors respectively arranged at preset positions on the equipment to be monitored. In a specific embodiment, the sensors include a tension sensor (in this embodiment, a pin-type tension sensor is selected), a laser rangefinder, and a tilt sensor. The tension sensor is arranged at the load-bearing connection position of the equipment to collect the load; the laser rangefinder is arranged on the lifting path of the lifting component of the equipment to collect the height and speed of the lifting component; and the tilt sensor is arranged on the rotating component of the equipment to collect the tilt angle.

[0019] The monitoring screen is equipped with an application communication terminal, which is used to collect and analyze the device data collected by the sensor module. The control box is equipped with a wireless communication device and a power supply system. The wireless communication device is used to receive signals from the tension sensor and the tilt sensor. The monitoring module is connected to a wireless AP local area network via the wireless communication device. The tension sensor communicates with the application terminal via the wireless communication device. The laser rangefinder sensor communicates with the application terminal via a wired communication device. The tilt sensor communicates with the application terminal via a wireless communication device.

[0020] As a specific application example, the device is a lifting and transporting device used for the installation of ultra-high voltage DC converter valve equipment. The tension sensor is installed at the four corners of the lifting and transporting device to monitor the load of the lifting and transporting device. The laser rangefinder is installed at the bottom of the four corners of the lifting and transporting device to monitor the height and speed of the lifting and transporting device. The tilt sensor is installed on the inside of the four corners of the lifting and transporting device to monitor the tilt degree of the lifting and transporting device.

[0021] Taking the installation of a lifting and transporting device applied to UHVDC converter valve equipment as an example, the installation process requires monitoring four equipment data points: load, height, speed, and tilt angle. Each parameter needs to have a corresponding warning threshold. As a specific embodiment, the initial warning thresholds for each parameter are shown in Table 1 below:

[0022] Table 1 Initial Setting Early Warning Thresholds for Equipment Data

[0023] According to Table 1, the warning thresholds are 8.5t for load, 40m for height, 3m / min for speed, and 10° for tilt angle. If a fixed threshold strategy is adopted, then for each sensor, an alarm needs to be triggered if the collected device data exceeds the corresponding warning threshold. The mathematical expression is: ; in, Indicates load capacity. This indicates the warning threshold corresponding to the load capacity. Indicates altitude, This indicates the warning threshold corresponding to the altitude. Indicates speed, Indicates the height difference. Indicates the time difference. This indicates the warning threshold corresponding to the speed. Indicates the angle of inclination. and These represent the horizontal tilt angles along the x-axis and y-axis, respectively. This indicates the warning threshold corresponding to the tilt angle.

[0024] However, in actual operation, this generates a large number of interference alarm signals, which not only affects the safety judgment of the staff, but also causes unnecessary interference to the normal operation of the equipment. This is because, in actual operation, on the one hand, the sensor may have abnormal value interference, resulting in data slightly exceeding the warning threshold. On the other hand, due to the complexity of the working process, there are often short-term overload conditions. At this time, a sensor may show data slightly exceeding the warning threshold at a certain moment or for a short period of time. However, in fact, the equipment is not actually malfunctioning in these situations. In most cases, the equipment is within the safe range that can be carried out, and there is no need to trigger an alarm signal.

[0025] In this embodiment, the monitoring module monitors the device data collected by a single sensor according to a first strategy during the monitoring period to obtain a first monitoring result. In addition to initially setting the warning threshold for the sensor, this embodiment also initially sets the monitoring period. To address the possibility of abnormal value interference or short-term overload interference from a single sensor at a certain instant or during a short period, this embodiment employs time-based monitoring for single-level alarms of a single sensor to avoid interfering with alarm signals.

[0026] Specifically, within each monitoring period, if the cumulative duration of the device data collected by the sensor exceeding the warning threshold reaches a preset duration threshold, or the cumulative number of times the device data collected by the sensor exceeds the warning threshold reaches a preset number threshold (the preset duration threshold and the preset number threshold are positively correlated with the monitoring period duration; as a specific embodiment, the preset duration threshold and the preset number threshold are proportional to the monitoring period duration), the current time is recorded as the alarm time and the first monitoring result is determined to be abnormal; otherwise, the first monitoring result is determined to be normal.

[0027] This embodiment uses a monitoring time period-based approach for individual sensors. If the cumulative over-limit duration of the device data collected by the sensor exceeds the preset duration threshold, it indicates that the interference is not a matter of a specific instant or short period. In this case, there is a high probability that there is indeed a real problem requiring early warning. Furthermore, in some actual operating conditions, although the cumulative over-limit duration may not reach the preset duration threshold, the collected device data may repeatedly exceed the warning threshold. In this case, there is also a high probability that there is indeed a real problem requiring early warning. This embodiment, through the above strategy, can effectively avoid interfering with alarm signals while providing timely early warnings of actual problems.

[0028] Furthermore, when the first monitoring result is determined to be abnormal, the early warning module outputs a single-level alarm signal. In response to the single-level alarm signal, the actuators related to the abnormal sensor are automatically adjusted according to the first processing rules (e.g., issuing feedback signals such as "decelerate," "adjust position tilt angle," and "decrease height") to restore the device data collected by the sensor to normal. After the automatic adjustment is completed, the early warning threshold and monitoring period duration are updated, and the next monitoring period begins. Analysis of actual data shows that even after automatic adjustments are made following an abnormal warning, the probability of a subsequent abnormality in a single sensor is higher than in sensors that did not issue an abnormal warning, especially in the short term where more serious problems may recur.

[0029] Therefore, in response to this situation, this embodiment will update the warning threshold and monitoring period duration after the automatic adjustment is completed before entering the next monitoring period. Through this update mechanism, the warning strategy of a single sensor can be dynamically optimized and adjusted to provide warnings of actual problems as promptly as possible, thereby ensuring the safe use of the equipment.

[0030] Specifically, the update mechanism for updating the warning threshold and monitoring period includes: dividing the monitoring period into multiple consecutive monitoring intervals; determining the monitoring interval to which the alarm time belongs as the target interval; determining the alarm level based on the target interval, with the alarm level being higher the closer the target interval is to the start of the monitoring period; and updating the warning threshold and monitoring period based on the alarm level, wherein the reduction ratio of the warning threshold and the shortening ratio of the next monitoring period are both positively correlated with the alarm level.

[0031] For sensors that have already shown abnormalities, the strategy adopted in this embodiment is to lower the warning threshold and shorten the monitoring period. Lowering the warning threshold can detect problems as early as possible to trigger warnings, while shortening the monitoring period reduces the preset duration threshold and preset number threshold that are positively correlated with it. When the sensor exceeds the limit, the single-level alarm is more likely to be triggered to predict potential risks as much as possible, thereby ensuring work safety.

[0032] Furthermore, the early warning system in this embodiment employs a time-based monitoring strategy for individual sensors and includes an update mechanism. This allows for timely identification of potential risks and early warning while effectively avoiding interference with alarm signals. However, for comprehensive alarms from multiple sensors, this embodiment still adopts an instantaneous response monitoring strategy. This is because multiple sensors are less likely to simultaneously exhibit instantaneous abnormal values, and multiple sensors exceeding limits at the same time indicates a potentially serious problem with the equipment. Therefore, an instantaneous response monitoring strategy is more effective in providing timely warnings to ensure equipment safety.

[0033] Specifically, the second strategy is based on the updated warning threshold under the first strategy. The step of the monitoring module processing the device data collected by multiple sensors according to the second strategy to obtain the second monitoring result includes: setting a danger threshold above the warning threshold, wherein the danger threshold is a preset multiple of the warning threshold (1.2 times in this embodiment); if all device data collected by multiple sensors are lower than the corresponding warning threshold or only a single device data exceeds the corresponding warning threshold, then the second monitoring result is determined to be normal; if a preset number of device data collected by multiple sensors exceeds the corresponding warning threshold, and none of the device data exceeds the corresponding danger threshold, then the second monitoring result is determined to be slightly abnormal; if a preset number of device data collects from multiple sensors exceeds the corresponding warning threshold, or if one device data exceeds the danger threshold, then the second monitoring result is determined to be severely abnormal.

[0034] To illustrate with a specific application example, when the sensors include a tension sensor (in this embodiment, a pin-type tension sensor), a laser rangefinder, and a tilt sensor, the mathematical expression for processing the device data collected by multiple sensors to obtain the second monitoring result in the second strategy is as follows: ; in, For constructor, It is a unit step function. It outputs 1 when the independent variable x > 0, and 0 otherwise. Alert level indicates the output value of multi-level alarms. Indicates load capacity. This indicates the updated warning threshold corresponding to the load capacity. Indicates altitude, This indicates the updated warning threshold corresponding to the height. Indicates speed, This indicates the updated warning threshold corresponding to the speed. Indicates the angle of inclination. This represents the updated warning threshold corresponding to the tilt angle. In this application example, the preset number is 2.

[0035] When the Alert level equals 0, it indicates that the second monitoring result is normal. When the Alert level equals 1, it indicates that the second monitoring result is slightly abnormal, and the early warning module outputs a slight comprehensive alarm signal. When the Alert level equals 2, it indicates that the second monitoring result is severely abnormal, and the early warning module outputs a severe comprehensive alarm signal.

[0036] Taking a lifting and transport device as a specific application example, the sensors include a tension sensor (in this embodiment, a pin-type tension sensor is selected), a laser rangefinder, and a tilt sensor. The equipment data used as monitoring parameters include four items: load, height, speed, and tilt angle. When the multi-level alarm output value is 0, it indicates that all monitoring parameters are within the safe threshold range or that a single monitoring parameter is abnormal (the operator can already detect this through the single-level alarm, so no additional prompt is given in the multi-level alarm), and normal lifting and lowering operations are allowed. The combined audible and visual alarm display will be solid green, and the operator still needs to maintain the regular inspection frequency.

[0037] When the multi-level alarm output value is 1, it indicates that two monitoring parameters have exceeded the corresponding warning thresholds, and all monitoring parameters have not exceeded the danger thresholds above the corresponding warning thresholds. The combined audible and visual alarm display is a yellow flashing + intermittent buzzing. At this time, the controller outputs feedback signals to the actuators corresponding to each sensor, such as "decelerate", "adjust tilt angle", "lower height" signals, to realize the automatic dynamic adjustment of the lifting and transporting device's attitude. The operator needs to record the changes in the equipment data of the abnormal sensors every 30 seconds. If the multi-level alarm output value still does not return from 1 to 0 after 3 minutes (the second monitoring result has not returned from mild abnormality to normal), the operation must be stopped in time, and the lifting and transporting device should be returned to the ground for a comprehensive inspection.

[0038] When the multi-level alarm output value is 2, it indicates that two or more monitoring parameters have exceeded the corresponding warning threshold or that there is a dangerous threshold where a single monitoring parameter exceeds the corresponding warning threshold. The combined audible and visual alarm display is a red rotating flashing light + continuous alarm. At this time, the lifting and transporting device triggers an automatic emergency stop, all manual operations are locked, and the entire lifting and transporting device automatically descends and starts the equipment self-diagnosis mode. After all problems are resolved and all monitoring parameters are normal, the system is manually reset and continues to work normally.

[0039] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0040] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0041] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0042] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0043] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A digital early warning system for equipment monitoring, characterized in that: include: The sensor module includes multiple sensors that are respectively arranged at preset positions on the device to be monitored; The monitoring module is configured to monitor device data collected by the multiple sensors; Based on the early warning threshold, the device data collected by a single sensor is monitored according to the first strategy during the monitoring period to obtain the first monitoring result, and the early warning threshold and monitoring period duration are updated each time the first monitoring result is abnormal; Based on the updated early warning threshold under the first strategy, the second monitoring result is obtained by processing the device data collected by multiple sensors according to the second strategy. The early warning module is configured to output a single-level alarm signal when the first monitoring result is abnormal, and to output a comprehensive alarm signal when the second monitoring result is abnormal.

2. The digital early warning system for equipment monitoring according to claim 1, characterized in that: The first monitoring results obtained by monitoring the device data collected by a single sensor according to the first strategy during the monitoring period include: If the cumulative duration of the device data collected by the sensor exceeding the warning threshold reaches a preset duration threshold, or the cumulative number of times the device data collected by the sensor exceeds the warning threshold reaches a preset number threshold, the current time is recorded as the alarm time, and the first monitoring result is determined to be abnormal; otherwise, the first monitoring result is determined to be normal.

3. The digital early warning system for equipment monitoring according to claim 2, characterized in that: The preset duration threshold and the preset number of times threshold are positively correlated with the duration of the monitoring period.

4. The digital early warning system for equipment monitoring according to claim 2, characterized in that: When the first monitoring result is determined to be abnormal, the early warning module outputs a single-level alarm signal; in response to the single-level alarm signal, the actuators related to the abnormal sensor are automatically adjusted according to the first processing rule, and after the automatic adjustment is completed, the early warning threshold and monitoring period duration are updated and the next monitoring period begins.

5. The digital early warning system for equipment monitoring according to claim 4, characterized in that: The updated warning thresholds and monitoring period durations include: The monitoring period is divided into multiple consecutive monitoring intervals; The monitoring interval to which the alarm time belongs is determined as the target interval; The alarm level is determined based on the target range; The warning threshold and monitoring period duration are updated according to the alarm level. During the update, the reduction ratio of the warning threshold and the shortening ratio of the next monitoring period are both positively correlated with the alarm level.

6. The digital early warning system for equipment monitoring according to claim 5, characterized in that: The second monitoring results obtained by processing equipment data collected from multiple sensors according to the second strategy include: A danger threshold above the warning threshold is set, wherein the danger threshold is a preset multiple of the warning threshold; If a preset number of device data points collected by multiple sensors exceed the corresponding warning threshold, and none of the device data points exceed the corresponding danger threshold, then the second monitoring result is determined to be slightly abnormal; if a preset number of device data points exceed the corresponding warning threshold, or if one device data point exceeds the danger threshold, then the second monitoring result is determined to be severely abnormal; otherwise, the second monitoring result is determined to be normal.

7. The digital early warning system for equipment monitoring according to claim 6, characterized in that: When the second monitoring result is slightly abnormal, the early warning module outputs a slight comprehensive alarm signal. In response to the slight comprehensive alarm signal, the module automatically adjusts the actuators related to all abnormal sensors according to the second processing rules, and records the changes in the device data collected by the abnormal sensors every preset time. If the second monitoring result is still slightly abnormal after the preset adjustment time, all operations are immediately stopped and a comprehensive inspection is carried out. When the second monitoring result is severely abnormal, the early warning module outputs a severe comprehensive alarm signal. In response to the severe comprehensive alarm signal, all operations are immediately stopped and a comprehensive inspection is carried out.

8. The digital early warning system for equipment monitoring according to claim 6, characterized in that: The sensor includes: A tension sensor is placed at the load-bearing connection point of the equipment to collect the load. A laser rangefinder sensor is placed on the lifting path of the equipment's lifting components to collect the height and speed of the lifting components; Tilt sensors are placed on the rotating components of the equipment to collect tilt angles.

9. The digital early warning system for equipment monitoring according to claim 8, characterized in that: The mathematical expression for the second monitoring result obtained by processing the device data collected by multiple sensors according to the second strategy is as follows: ； in, For constructor, It is a unit step function. It outputs 1 when the independent variable x > 0, and 0 otherwise. Alert level indicates the output value of multi-level alarms. Indicates load capacity. This indicates the updated warning threshold corresponding to the load capacity. Indicates altitude, This indicates the updated warning threshold corresponding to the height. Indicates speed, This indicates the updated warning threshold corresponding to the speed. Indicates the angle of inclination. This indicates the updated warning threshold corresponding to the tilt angle.

10. A digital early warning method for equipment monitoring, characterized in that, include: Monitor device data collected by multiple sensors; Based on the early warning threshold, the device data collected by a single sensor is monitored according to the first strategy during the monitoring period to obtain the first monitoring result, and the early warning threshold and monitoring period duration are updated each time the first monitoring result is abnormal; Based on the updated early warning threshold under the first strategy, the second monitoring result is obtained by processing the device data collected by multiple sensors according to the second strategy. When the first monitoring result is abnormal, a single-level alarm signal is output, and when the second monitoring result is abnormal, a comprehensive alarm signal is output.

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