Detection and early warning system and method for construction device after use

Abstract

The invention relates to the technical field of device detection, and discloses a detection and early warning system and method for a construction device after use, and the system comprises a sensor assembly which comprises a voltage sensor, a current sensor, a vibration sensor and a temperature sensor; the control module is used for collecting electric power information and working condition information of the generator, obtaining an electric property evaluation value of the generator according to the electric power information, obtaining a mechanical evaluation value of the generator according to the working condition information, comprehensively evaluating the performance of the generator according to the electric property evaluation value and the mechanical evaluation value and performing early warning; wherein the control module comprises an acquisition unit, a processing unit and an early warning unit. According to the invention, through real-time monitoring of integrated electric power information and working condition information, comprehensive monitoring can be realized, and the performance evaluation and fault early warning capability of the generator after use can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of device detection technology, and in particular to a post-use detection and early warning system and method for a construction device. Background Art

[0002] With the continuous development of modern construction equipment, especially generator equipment in the power industry, how to ensure the stability and safety of equipment after long-term operation has become an important issue in engineering operation and maintenance. As the core equipment for power production and transmission, the operating status of the generator directly affects the reliability and safety of power supply.

[0003] Traditional generator monitoring methods usually rely on manual inspections and regular maintenance. This method has certain limitations, such as the inability to monitor the operating status of the equipment in real time and the subjectivity of manual judgment. Therefore, the development of a system that can monitor the operating status of the generator in real time, detect faults in a timely manner and issue warnings has become an urgent need for modern equipment management. In addition, in the prior art, fault diagnosis and early warning for generators mostly use a single monitoring method, usually only a single test. However, a single monitoring method cannot fully evaluate the operating status of the generator, especially when abnormal power fluctuations and mechanical failures coexist, and it is impossible to accurately and comprehensively diagnose equipment problems.

[0004] Therefore, it is necessary to provide a post-use detection and early warning system and method for a construction device to solve the problem in the prior art that a single monitoring means cannot comprehensively and efficiently diagnose generator faults. Summary of the invention

[0005] In view of this, the present invention proposes a post-use detection and early warning system and method for a construction device, aiming to solve the problem in the prior art that a single monitoring means cannot comprehensively and efficiently diagnose generator faults.

[0006] In one aspect, the present invention provides a post-use detection and early warning system for a construction device, comprising:

[0007] A sensor assembly, comprising a voltage sensor, a current sensor, a vibration sensor and a temperature sensor, wherein the voltage sensor and the current sensor are arranged at the output end of the generator, and the vibration sensor and the temperature sensor are arranged on the bearing seat;

[0008] A control module, used to collect power information and operating condition information of the generator, obtain an electrical evaluation value of the generator according to the power information, obtain a mechanical evaluation value of the generator according to the operating condition information, and comprehensively evaluate the performance of the generator according to the electrical evaluation value and the mechanical evaluation value and issue an early warning; wherein the control module includes a collection unit, a processing unit and an early warning unit;

[0009] The acquisition unit is used to acquire power information and operating condition information of the generator, wherein the power information includes output voltage and output current, and the operating condition information includes bearing vibration information and bearing temperature information;

[0010] The processing unit is used to calculate the electrical property evaluation value according to the fluctuation value of the output voltage and the fluctuation value of the output current, and determine whether to adjust the electrical property evaluation value according to the voltage fluctuation duration; if it is determined to be adjusted, the electrical property evaluation value is adjusted according to the voltage fluctuation duration and the voltage fluctuation interval duration to obtain a final electrical property evaluation value;

[0011] The processing unit is further used to calculate the mechanical evaluation value according to the bearing vibration information, determine whether to adjust the mechanical evaluation value according to the bearing temperature information, and if it is determined to be adjusted, adjust the mechanical evaluation value according to the temperature information to obtain a final mechanical evaluation value;

[0012] The early warning unit is used to obtain a total detection value by weighted summing the final value of the electrical evaluation and the initial value of the mechanical evaluation, and to issue an early warning based on the total detection value.

[0013] Furthermore, when the processing unit is used to calculate the electrical property evaluation value according to the fluctuation value of the output voltage and the fluctuation value of the output current, it includes:

[0014] Construct a voltage fluctuation value sequence and a current fluctuation value sequence within a unit time, and arrange the values ​​in the voltage fluctuation value sequence and the current fluctuation value sequence in descending order respectively;

[0015] The maximum voltage fluctuation value in the voltage fluctuation value sequence and the maximum current fluctuation value in the current fluctuation value sequence are selected, and the electrical property evaluation value is calculated according to the maximum voltage fluctuation value, the number of voltage fluctuations, the maximum current fluctuation value and the number of current fluctuations:

[0016]

[0017] In the above formula, Sd represents the electrical evaluation value, a represents the voltage fluctuation weight coefficient, NV represents the number of voltage fluctuations, Vk represents the kth voltage fluctuation value, b represents the current fluctuation weight coefficient, NI represents the number of current fluctuations, Vj represents the jth current fluctuation value, and a+b=1.

[0018] Furthermore, when the processing unit is used to determine whether to adjust the electrical property evaluation value according to the voltage fluctuation duration, it includes:

[0019] The maximum value of the voltage fluctuation duration per unit time is set, and the total duration of the voltage fluctuation per unit time is collected. If the total duration of the voltage fluctuation is greater than the maximum value of the voltage fluctuation duration, it is determined that the electrical property evaluation value needs to be adjusted.

[0020] If the total duration of the voltage fluctuation is less than or equal to the maximum duration of the voltage fluctuation, it is determined that there is no need to adjust the electrical property evaluation value.

[0021] Further, the processing unit is used to adjust the electrical property evaluation value according to the voltage fluctuation duration and the voltage fluctuation interval duration if it is determined to be an adjustment, and when obtaining the electrical property evaluation final value, it includes:

[0022] Construct a voltage fluctuation interval duration sequence Tx={t1, t2, ..., tn} within a unit time, calculate an impact factor according to each interval duration value in the interval duration sequence and the total duration of the voltage fluctuation, and adjust the electrical property evaluation value according to the impact factor;

[0023] The impact factor is calculated by the following formula:

[0024]

[0025] In the above formula, F represents the influencing factor, n represents the number of values ​​in the interval duration sequence, ti represents the i-th interval duration, T represents the total duration of voltage fluctuation, and wi represents the weight of each interval duration ti.

[0026] Further, the processing unit is used to adjust the electrical property evaluation value according to the voltage fluctuation duration and the voltage fluctuation interval duration if it is determined to be an adjustment, and when obtaining the electrical property evaluation final value, it also includes:

[0027] Set the minimum and maximum impact factors;

[0028] If the impact factor is less than the minimum impact factor, adjusting the electrical property evaluation value by a first adjustment coefficient;

[0029] If the impact factor is greater than or equal to the minimum impact factor and less than or equal to the maximum impact factor, the electrical property evaluation value is adjusted by a second adjustment coefficient;

[0030] If the impact factor is greater than the maximum impact factor, adjusting the electrical property evaluation value by a third adjustment coefficient;

[0031] Among them, the first adjustment coefficient is smaller than the second adjustment coefficient, and the second adjustment coefficient is smaller than the third adjustment coefficient.

[0032] Furthermore, the processing unit is also used to calculate the mechanical evaluation value according to the bearing vibration information, including:

[0033] A standard vibration value is preset, a vibration waveform diagram output by a vibration sensor within a unit time is collected, a vibration average value is calculated, and the mechanical evaluation value is calculated based on the vibration average value and the vibration peak value:

[0034] Sj=k*Aavg*e Af / A0 ;

[0035] In the above formula, Sj represents the mechanical evaluation value, k represents the adjustment coefficient, Aavg represents the vibration average value, Af represents the vibration peak value, and A0 represents the standard vibration value.

[0036] Furthermore, the processing unit is further configured to determine whether to adjust the mechanical evaluation value according to the bearing temperature information, including:

[0037] Preset a maximum bearing temperature, and if the bearing temperature is less than or equal to the maximum bearing temperature, determine that the mechanical evaluation value does not need to be adjusted;

[0038] If the bearing temperature is greater than the maximum bearing temperature, it is determined that the mechanical evaluation value needs to be adjusted.

[0039] Furthermore, the processing unit is further configured to adjust the mechanical evaluation value according to the temperature information if it is determined to be an adjustment, and to obtain a final mechanical evaluation value, including:

[0040] Setting a first temperature and a second temperature, wherein the first temperature is lower than the second temperature;

[0041] If the bearing temperature is lower than the first temperature, adjusting the mechanical evaluation value by a first adjustment coefficient;

[0042] If the bearing temperature is greater than or equal to the first temperature and less than or equal to the second temperature, the mechanical evaluation value is adjusted by a second adjustment coefficient;

[0043] If the bearing temperature is greater than the second temperature, adjusting the mechanical evaluation value by a third adjustment coefficient;

[0044] The first adjustment coefficient is greater than the second adjustment coefficient, and the second adjustment coefficient is greater than the third adjustment coefficient.

[0045] Furthermore, the early warning unit is used to obtain a total detection value by weighted summing the final value of the electrical evaluation and the initial value of the mechanical evaluation. When issuing an early warning based on the total detection value, it includes:

[0046] Sz=a*Sd1+γ*Sj1;

[0047] In the above formula, Sz represents the total test value, α represents the weight coefficient of the final value of electrical evaluation, Sd1 represents the final value of electrical evaluation, β represents the weight coefficient of the final value of mechanical evaluation, and Sj1 represents the final value of mechanical evaluation;

[0048] Set a first total value and a second total value, and the first total value is smaller than the second total value;

[0049] If the total detection value is less than the first total value, a first-level warning is issued;

[0050] If the total detection value is greater than or equal to the first total value and less than or equal to the second total value, a second-level warning is issued;

[0051] If the total detection value is greater than the second total value, a third-level warning is issued;

[0052] Among them, the warning levels from low to high are level one warning, level two warning and level three warning.

[0053] Compared with the prior art, the beneficial effect of the present invention is that the system can effectively improve the performance evaluation and fault warning capabilities of the generator after use by integrating real-time monitoring of power information and mechanical working condition information. The voltage sensor and current sensor are used to monitor the power changes at the output end of the generator, and the vibration sensor and temperature sensor track the operating status of the bearing seat in real time to provide key mechanical working condition data. By combining the electrical evaluation value with the mechanical evaluation value, the system can comprehensively evaluate the operating status of the generator and conduct a comprehensive analysis of its electrical and mechanical properties. This dual monitoring mechanism can detect power fluctuations or mechanical anomalies in a timely manner, avoid the occurrence of potential faults, ensure the safe operation of the equipment and extend its service life. In particular, when the voltage fluctuation or mechanical vibration exceeds the predetermined threshold, the system can intelligently adjust the evaluation value and issue an early warning, reminding the operator to take timely measures, thereby improving the safety and efficiency of the construction process. Finally, the early warning function based on the comprehensive evaluation value provides a scientific basis for the maintenance of the equipment, reduces the shortcomings of traditional manual inspections, improves the level of automation and intelligence, and reduces the downtime and maintenance costs caused by equipment failures.

[0054] On the other hand, the present application also provides a detection and early warning method for a construction device after use, comprising:

[0055] A voltage sensor and a current sensor are arranged at the output end of the generator, and a vibration sensor and a temperature sensor are arranged on the bearing seat;

[0056] Collecting power information and operating condition information of the generator, wherein the power information includes output voltage and output current, and the operating condition information includes bearing vibration information and bearing temperature information;

[0057] Calculating the electrical property evaluation value according to the fluctuation value of the output voltage and the fluctuation value of the output current, judging whether to adjust the electrical property evaluation value according to the voltage fluctuation duration, and if it is judged to be adjusted, adjusting the electrical property evaluation value according to the voltage fluctuation duration and the voltage fluctuation interval duration to obtain a final electrical property evaluation value;

[0058] Calculating the mechanical evaluation value according to the bearing vibration information, judging whether to adjust the mechanical evaluation value according to the bearing temperature information, and if it is judged to be adjusted, adjusting the mechanical evaluation value according to the temperature information to obtain a final mechanical evaluation value;

[0059] The total detection value is obtained by weighted summing the final value of the electrical evaluation and the initial value of the mechanical evaluation, and an early warning is issued based on the total detection value.

[0060] It can be understood that the post-use detection and early warning system and method for the construction device provided in the present application have the same beneficial effects and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0062] Figure 1 A functional block diagram of a post-use detection and warning system for a construction device provided by an embodiment of the present invention;

[0063] Figure 2 A flow chart of a post-use detection and early warning method for a construction device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0064] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0065] In some embodiments of the present application, see Figure 1 As shown, this embodiment provides a post-use detection and warning system for a construction device, comprising:

[0066] The sensor assembly includes a voltage sensor, a current sensor, a vibration sensor and a temperature sensor, wherein the voltage sensor and the current sensor are arranged at the output end of the generator, and the vibration sensor and the temperature sensor are arranged on the bearing seat;

[0067] A control module is used to collect power information and working condition information of the generator, obtain an electrical evaluation value of the generator according to the power information, obtain a mechanical evaluation value of the generator according to the working condition information, and comprehensively evaluate the performance of the generator according to the electrical evaluation value and the mechanical evaluation value and issue an early warning; wherein the control module includes a collection unit, a processing unit and an early warning unit;

[0068] The acquisition unit is used to acquire power information and operating condition information of the generator, wherein the power information includes output voltage and output current, and the operating condition information includes bearing vibration information and bearing temperature information;

[0069] The processing unit is used to calculate the electrical evaluation value according to the fluctuation value of the output voltage and the fluctuation value of the output current, and determine whether to adjust the electrical evaluation value according to the voltage fluctuation duration. If it is determined to be adjusted, the electrical evaluation value is adjusted according to the voltage fluctuation duration and the voltage fluctuation interval duration to obtain the electrical evaluation final value;

[0070] The processing unit is also used to calculate the mechanical evaluation value according to the bearing vibration information, and determine whether to adjust the mechanical evaluation value according to the bearing temperature information. If it is determined to be adjusted, the mechanical evaluation value is adjusted according to the temperature information to obtain a final mechanical evaluation value.

[0071] The early warning unit is used to obtain the total detection value by weighted summing up the final value of the electrical evaluation and the initial value of the mechanical evaluation, and to issue an early warning based on the total detection value.

[0072] It is understandable that the system can effectively improve the performance evaluation and fault warning capabilities of the generator after use by integrating real-time monitoring of power information and mechanical working condition information. Voltage sensors and current sensors are used to monitor power changes at the output end of the generator, while vibration sensors and temperature sensors track the operating status of the bearing seat in real time and provide key mechanical working condition data. By combining the electrical evaluation value with the mechanical evaluation value, the system can comprehensively evaluate the operating status of the generator and conduct a comprehensive analysis of its electrical and mechanical properties. This dual monitoring mechanism can detect power fluctuations or mechanical anomalies in a timely manner, avoid potential failures, ensure the safe operation of the equipment and extend its service life. In particular, when voltage fluctuations or mechanical vibrations exceed the predetermined threshold, the system can intelligently adjust the evaluation value and issue an early warning, reminding the operator to take timely measures, thereby improving safety and efficiency during the construction process. Ultimately, the early warning function based on the comprehensive evaluation value provides a scientific basis for equipment maintenance, reduces the shortcomings of traditional manual inspections, improves the level of automation and intelligence, and reduces downtime and maintenance costs caused by equipment failures.

[0073] In some embodiments of the present application, when the processing unit is used to calculate the electrical property evaluation value according to the fluctuation value of the output voltage and the fluctuation value of the output current, the processing unit includes:

[0074] Construct a voltage fluctuation value sequence and a current fluctuation value sequence within a unit time, and arrange the values ​​in the voltage fluctuation value sequence and the current fluctuation value sequence in descending order respectively;

[0075] Select the maximum voltage fluctuation value in the voltage fluctuation value sequence and the maximum current fluctuation value in the current fluctuation value sequence, and calculate the electrical evaluation value according to the maximum voltage fluctuation value, the number of voltage fluctuations, the maximum current fluctuation value and the number of current fluctuations:

[0076]

[0077] In the above formula, Sd represents the electrical evaluation value, a represents the voltage fluctuation weight coefficient, NV represents the number of voltage fluctuations, Vk represents the kth voltage fluctuation value, b represents the current fluctuation weight coefficient, NI represents the number of current fluctuations, Vj represents the jth current fluctuation value, and a+b=1.

[0078] It can be understood that the processing unit in the present invention arranges the sequence of voltage fluctuation values ​​and current fluctuation values ​​in descending order, selects the maximum fluctuation value, and calculates the electrical evaluation value in combination with the number of fluctuations. The advantage of this method is that it can accurately quantify the severity and frequency of the power fluctuations of the generator. By setting the weight coefficients of the voltage and current fluctuations respectively, and performing weighted calculations according to their respective number of fluctuations, the degree of influence of different fluctuations can be effectively distinguished, thereby obtaining a more reasonable and detailed electrical evaluation value. This evaluation method not only improves the accuracy of power monitoring, but also adjusts the electrical evaluation value according to the actual fluctuation situation, enhances the system's early warning capability for power anomalies, helps to detect potential faults in a timely manner, and ensures the stable operation of the equipment.

[0079] In some embodiments of the present application, when the processing unit is used to determine whether to adjust the electrical property evaluation value according to the voltage fluctuation duration, the processing unit includes:

[0080] Set the maximum voltage fluctuation duration per unit time, collect the total voltage fluctuation duration per unit time, and if the total voltage fluctuation duration is greater than the maximum voltage fluctuation duration, determine that the electrical evaluation value needs to be adjusted;

[0081] If the total duration of the voltage fluctuation is less than or equal to the maximum duration of the voltage fluctuation, it is determined that there is no need to adjust the electrical property evaluation value.

[0082] It is understandable that the processing unit in the present invention determines whether the electrical evaluation value needs to be adjusted by setting the maximum value of the voltage fluctuation duration and comparing it with the total duration of the voltage fluctuation per unit time. The advantage of this method is that the evaluation value can be flexibly adjusted according to the duration of the voltage fluctuation, ensuring that the power system responds promptly when a longer fluctuation occurs. If the duration of the voltage fluctuation exceeds the preset maximum value, it means that the equipment may face continuous power instability, and the system will automatically adjust the electrical evaluation value to enhance the warning sensitivity. On the contrary, if the fluctuation duration is short, there is no need to adjust the evaluation value, avoiding unnecessary false alarms. This method improves the accuracy of power monitoring, optimizes the timing of fault warnings, and ensures that the generator equipment can be promptly evaluated and maintained when the power fluctuation is abnormal.

[0083] In some embodiments of the present application, the processing unit is used to adjust the electrical property evaluation value according to the voltage fluctuation duration and the voltage fluctuation interval duration if it is determined to be an adjustment, and when obtaining the electrical property evaluation final value, it includes:

[0084] Construct a voltage fluctuation interval duration sequence Tx={t1, t2, …, tn} within a unit time, calculate the impact factor according to the interval duration value of each interval in the interval duration sequence and the total duration of voltage fluctuation, and adjust the electrical property evaluation value according to the impact factor;

[0085] The impact factor is calculated by the following formula:

[0086]

[0087] In the above formula, F represents the influencing factor, n represents the number of values ​​in the interval duration sequence, ti represents the i-th interval duration, T represents the total duration of voltage fluctuation, and wi represents the weight of each interval duration ti.

[0088] It is understandable that the processing unit in the present invention can further accurately adjust the electrical evaluation value by constructing a voltage fluctuation interval duration sequence and calculating the impact factor, and can comprehensively consider the distribution of voltage fluctuation interval duration, rather than just focusing on the total duration of the fluctuation. By adjusting each interval duration through weight allocation, the frequency of voltage fluctuations and their impact on equipment can be more carefully reflected, thereby more accurately evaluating the stability of the power system. When the interval duration of voltage fluctuations is long, it may indicate that the equipment load changes greatly. The adjustment of the impact factor can increase the correction of the electrical evaluation value and improve the system's early warning ability for potential faults. This method effectively avoids misjudgments caused by simple fluctuation duration judgments, making electrical evaluation more scientific and accurate, and helping to promptly detect abnormal conditions of the power system and take effective preventive measures.

[0089] In some embodiments of the present application, the processing unit is used to adjust the electrical property evaluation value according to the voltage fluctuation duration and the voltage fluctuation interval duration if it is determined to be an adjustment, and when the electrical property evaluation final value is obtained, it also includes:

[0090] Set the minimum and maximum impact factors;

[0091] If the impact factor is less than the minimum impact factor, the electrical property evaluation value is adjusted by the first adjustment coefficient;

[0092] If the impact factor is greater than or equal to the minimum impact factor and less than or equal to the maximum impact factor, the electrical property evaluation value is adjusted by the second adjustment coefficient;

[0093] If the impact factor is greater than the maximum impact factor, the electrical property evaluation value is adjusted by the third adjustment coefficient;

[0094] Among them, the first adjustment coefficient is smaller than the second adjustment coefficient, and the second adjustment coefficient is smaller than the third adjustment coefficient.

[0095] It is understandable that the processing unit in the present invention can achieve a more flexible and accurate adjustment mechanism by setting the minimum and maximum values ​​of the influencing factors and using different adjustment coefficients to adjust the electrical evaluation values ​​according to different influencing factor ranges. By adjusting the evaluation values ​​in stages according to the size of the influencing factors, the impact of different degrees of voltage fluctuations on equipment performance can be effectively distinguished. If the influencing factor is small, it indicates that the voltage fluctuation is slight, and the system adjusts it through a smaller adjustment coefficient to avoid overreaction; if the influencing factor is large, it indicates that the fluctuation is more severe, and the system corrects it through a larger adjustment coefficient, thereby reflecting the instability of the power system more promptly. This hierarchical adjustment mechanism improves the meticulousness of the evaluation, avoids misjudgment caused by excessive or insufficient adjustment, ensures the accuracy and sensitivity of the electrical evaluation value, helps to better predict the potential failures of the generator, and enhances the system's early warning capability and maintenance efficiency.

[0096] In some embodiments of the present application, the processing unit is further configured to calculate a mechanical evaluation value according to bearing vibration information, including:

[0097] Preset the standard vibration value, collect the vibration waveform output by the vibration sensor per unit time, calculate the vibration average value, and calculate the mechanical evaluation value based on the vibration average value and vibration peak value:

[0098] Sj=k*Aavg*e Af / A0 ;

[0099] In the above formula, Sj represents the mechanical evaluation value, k represents the adjustment coefficient, Aavg represents the vibration average value, Af represents the vibration peak value, and A0 represents the standard vibration value.

[0100] It can be understood that the processing unit in the present invention calculates the ratio of the vibration average value to the vibration peak value, and calculates the mechanical evaluation value in combination with the preset standard vibration value, which can accurately reflect the health status of the mechanical equipment. By comparing the vibration average value and peak value with the standard vibration value, the vibration level of the equipment and the potential risk of mechanical failure can be effectively evaluated. The combination of the vibration average value and peak value makes the evaluation more comprehensive, and the standard vibration value as a benchmark can help the system more accurately identify whether there is an abnormality. The introduction of the adjustment coefficient allows the vibration characteristics under different equipment or working conditions to be flexibly adjusted, further improving the accuracy and adaptability of the evaluation value. Through this mechanism, the system can more accurately monitor the mechanical status of key components such as bearings, identify early failures or potential problems in a timely manner, thereby avoiding major damage and downtime of the equipment, and improving the operating reliability and maintenance efficiency of the equipment.

[0101] In some embodiments of the present application, the processing unit is further configured to determine whether to adjust the mechanical evaluation value according to the bearing temperature information, including:

[0102] The maximum bearing temperature is preset. If the bearing temperature is less than or equal to the maximum bearing temperature, it is determined that there is no need to adjust the mechanical evaluation value;

[0103] If the bearing temperature is greater than the maximum bearing temperature, it is determined that the mechanical evaluation value needs to be adjusted.

[0104] It is understandable that the processing unit in the present invention can effectively prevent mechanical failures caused by excessively high temperatures by setting the maximum bearing temperature and judging whether to adjust the mechanical evaluation value based on the comparison between the actual temperature and the preset value. Bearing temperature is an important parameter that reflects mechanical wear and operating status. When the bearing temperature exceeds the preset maximum temperature, it may mean that the bearing is overheated or has problems such as poor lubrication, which in turn leads to a decrease in mechanical performance or failure. Therefore, the system adjusts the mechanical evaluation value in a timely manner by setting the temperature threshold, thereby improving the early warning capability of potential faults. When the bearing temperature is normal, the evaluation value does not need to be adjusted, which avoids unnecessary false alarms, enhances the accuracy of mechanical evaluation, and enables the system to respond to temperature anomalies more sensitively and take maintenance measures in advance, thereby effectively ensuring the safe operation of the equipment and extending its service life.

[0105] In some embodiments of the present application, the processing unit is further configured to adjust the mechanical evaluation value according to the temperature information if it is determined to be an adjustment, and obtain the final mechanical evaluation value, including:

[0106] Setting a first temperature and a second temperature, wherein the first temperature is lower than the second temperature;

[0107] If the bearing temperature is less than the first temperature, the mechanical evaluation value is adjusted by a first adjustment coefficient;

[0108] If the bearing temperature is greater than or equal to the first temperature and less than or equal to the second temperature, the mechanical evaluation value is adjusted by a second adjustment coefficient;

[0109] If the bearing temperature is greater than the second temperature, the mechanical evaluation value is adjusted by a third adjustment coefficient;

[0110] The first adjustment coefficient is greater than the second adjustment coefficient, and the second adjustment coefficient is greater than the third adjustment coefficient.

[0111] It can be understood that the processing unit in the present invention can more accurately reflect the impact of the temperature change of the bearing on the mechanical properties by setting multiple temperature thresholds and using different adjustment coefficients to adjust the mechanical evaluation value according to different intervals of the bearing temperature. By setting the first temperature and the second temperature interval, the judgment of the mechanical state in different temperature ranges can be refined to avoid overreaction or underreaction to temperature changes. If the temperature is low, the evaluation value is increased by a larger adjustment coefficient (first adjustment coefficient), reflecting that the equipment is operating in a relatively stable state; when the temperature is close to the normal operating range, a smaller adjustment coefficient is used for correction; and when the temperature is too high, an even smaller adjustment coefficient is used for adjustment, thereby suppressing the potential risks caused by overheating. Such a hierarchical adjustment mechanism makes the system more flexible, and can dynamically adjust the evaluation results according to the actual temperature changes, improve the accuracy of fault warning and the timeliness of response, effectively protect the equipment from damage caused by excessive temperature, and extend the service life of the equipment.

[0112] In some embodiments of the present application, the early warning unit is used to obtain a total detection value by weighted summing the final value of the electrical evaluation and the initial value of the mechanical evaluation. When issuing an early warning based on the total detection value, it includes:

[0113] Sz=a*Sd1+β*Sj1;

[0114] In the above formula, Sz represents the total test value, α represents the weight coefficient of the final value of electrical evaluation, Sd1 represents the final value of electrical evaluation, β represents the weight coefficient of the final value of mechanical evaluation, and Sj1 represents the final value of mechanical evaluation;

[0115] Set a first total value and a second total value, and the first total value is smaller than the second total value;

[0116] If the total detection value is less than the first total value, a first-level warning is issued;

[0117] If the total detection value is greater than or equal to the first total value, and less than or equal to the second total value, a second-level warning is issued;

[0118] If the total detection value is greater than the second total value, a third-level warning will be issued;

[0119] Among them, the warning levels from low to high are level one warning, level two warning and level three warning.

[0120] It can be understood that the early warning unit in the present invention obtains the total detection value by weighted summing the final value of the electrical evaluation and the final value of the mechanical evaluation, and sets different early warning levels according to the total value, and can dynamically adjust the early warning response according to the comprehensive evaluation results, so as to more accurately predict the health status of the equipment. By setting the weight coefficients (α and β) for the electrical evaluation and the mechanical evaluation respectively, the degree of their influence in the total evaluation can be flexibly adjusted according to different types of failure risks. By setting the interval between the first total value and the second total value, different early warning levels can be set for abnormal conditions of different degrees, from the first level early warning to the third level early warning, ensuring that the system can provide timely feedback and corresponding processing measures according to the actual status of the equipment, which helps to identify potential problems at an early stage and take appropriate countermeasures to prevent faults from escalating or causing greater damage, thereby improving the reliability of the equipment, reducing downtime, and effectively reducing maintenance costs.

[0121] On the other hand, see Figure 2 As shown, the present application also provides a post-use detection and early warning method for a construction device, which is applied to the post-use detection and early warning system for the construction device, and includes the following steps:

[0122] S100, setting a voltage sensor and a current sensor at the output end of the generator, and setting a vibration sensor and a temperature sensor on the bearing seat;

[0123] S200, collecting power information and operating condition information of the generator, wherein the power information includes output voltage and output current, and the operating condition information includes bearing vibration information and bearing temperature information;

[0124] S300, calculating an electrical property evaluation value according to the fluctuation value of the output voltage and the fluctuation value of the output current, judging whether to adjust the electrical property evaluation value according to the voltage fluctuation duration, and if it is judged to be adjusted, adjusting the electrical property evaluation value according to the voltage fluctuation duration and the voltage fluctuation interval duration to obtain a final electrical property evaluation value;

[0125] S400, calculating a mechanical evaluation value according to bearing vibration information, judging whether to adjust the mechanical evaluation value according to bearing temperature information, and if it is judged to be adjusted, adjusting the mechanical evaluation value according to the temperature information to obtain a final mechanical evaluation value;

[0126] S500, a total detection value is obtained by weighted summing of the final value of the electrical evaluation and the initial value of the mechanical evaluation, and an early warning is issued according to the total detection value.

[0127] It can be understood that the detection and early warning method provided by the present invention effectively improves the accuracy and timeliness of equipment fault early warning by comprehensively collecting and analyzing power information and working condition information, combined with the dynamic adjustment of electrical evaluation values ​​and mechanical evaluation values. Specifically, the method can fully understand the operating status of the equipment by collecting the output voltage, current, vibration and temperature information of the generator. The electrical evaluation value reflects the health status of the power system by analyzing the voltage fluctuation and current fluctuation, and further accurately adjusts the evaluation results by combining the influencing factors of the voltage fluctuation duration and interval duration. The mechanical evaluation value evaluates the state of the mechanical part by combining the bearing vibration information and temperature information, and dynamically corrects the evaluation value according to the temperature change, so as to avoid the influence of overheating and other problems. Finally, the electrical and mechanical evaluation results are combined, and the weighted sum is performed to obtain the total detection value, and different levels of early warning are performed according to the total value, which can realize multi-dimensional and multi-parameter real-time monitoring, timely discover potential equipment failures and issue early warnings, reduce downtime, reduce maintenance costs, and improve the operation safety and reliability of the equipment.

[0128] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0129] The present application is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0130] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1A function specified in one or more boxes.

[0131] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A post-use detection and warning system for a construction device, characterized in that: include: A sensor assembly, comprising a voltage sensor, a current sensor, a vibration sensor and a temperature sensor, wherein the voltage sensor and the current sensor are arranged at the output end of the generator, and the vibration sensor and the temperature sensor are arranged on the bearing seat; A control module, used to collect power information and operating condition information of the generator, obtain an electrical evaluation value of the generator according to the power information, obtain a mechanical evaluation value of the generator according to the operating condition information, and comprehensively evaluate the performance of the generator according to the electrical evaluation value and the mechanical evaluation value and issue an early warning; wherein the control module includes a collection unit, a processing unit and an early warning unit; The acquisition unit is used to acquire power information and operating condition information of the generator, wherein the power information includes output voltage and output current, and the operating condition information includes bearing vibration information and bearing temperature information; The processing unit is used to calculate the electrical property evaluation value according to the fluctuation value of the output voltage and the fluctuation value of the output current, and determine whether to adjust the electrical property evaluation value according to the voltage fluctuation duration; if it is determined to be adjusted, the electrical property evaluation value is adjusted according to the voltage fluctuation duration and the voltage fluctuation interval duration to obtain a final electrical property evaluation value; The processing unit is further used to calculate the mechanical evaluation value according to the bearing vibration information, determine whether to adjust the mechanical evaluation value according to the bearing temperature information, and if it is determined to be adjusted, adjust the mechanical evaluation value according to the temperature information to obtain a final mechanical evaluation value; The early warning unit is used to obtain a total detection value by weighted summing the final value of the electrical evaluation and the initial value of the mechanical evaluation, and to issue an early warning based on the total detection value.

2. The post-use detection and warning system for construction equipment according to claim 1, characterized in that: When the processing unit is used to calculate the electrical property evaluation value according to the fluctuation value of the output voltage and the fluctuation value of the output current, it includes: Construct a voltage fluctuation value sequence and a current fluctuation value sequence within a unit time, and arrange the values ​​in the voltage fluctuation value sequence and the current fluctuation value sequence in descending order respectively; The maximum voltage fluctuation value in the voltage fluctuation value sequence and the maximum current fluctuation value in the current fluctuation value sequence are selected, and the electrical property evaluation value is calculated according to the maximum voltage fluctuation value, the number of voltage fluctuations, the maximum current fluctuation value and the number of current fluctuations: In the above formula, Sd represents the electrical evaluation value, a represents the voltage fluctuation weight coefficient, NV represents the number of voltage fluctuations, Vk represents the kth voltage fluctuation value, b represents the current fluctuation weight coefficient, NI represents the number of current fluctuations, Vj represents the jth current fluctuation value, and a+b=1.

3. The post-use detection and warning system for construction equipment according to claim 2, characterized in that: When the processing unit is used to determine whether to adjust the electrical property evaluation value according to the voltage fluctuation duration, it includes: The maximum value of the voltage fluctuation duration per unit time is set, and the total duration of the voltage fluctuation per unit time is collected. If the total duration of the voltage fluctuation is greater than the maximum value of the voltage fluctuation duration, it is determined that the electrical property evaluation value needs to be adjusted. If the total duration of the voltage fluctuation is less than or equal to the maximum duration of the voltage fluctuation, it is determined that there is no need to adjust the electrical property evaluation value.

4. The post-use detection and warning system for construction equipment according to claim 3, characterized in that: The processing unit is used to adjust the electrical property evaluation value according to the voltage fluctuation duration and the voltage fluctuation interval duration if it is determined to be an adjustment, and when obtaining the electrical property evaluation final value, it includes: Construct a voltage fluctuation interval duration sequence Tx={t1, t2, ..., tn} within a unit time, calculate an impact factor according to each interval duration value in the interval duration sequence and the total duration of the voltage fluctuation, and adjust the electrical property evaluation value according to the impact factor; The impact factor is calculated by the following formula: In the above formula, F represents the influencing factor, n represents the number of values ​​in the interval duration sequence, ti represents the i-th interval duration, T represents the total duration of voltage fluctuation, and wi represents the weight of each interval duration ti.

5. The post-use detection and warning system for construction equipment according to claim 4, characterized in that: The processing unit is used to adjust the electrical property evaluation value according to the voltage fluctuation duration and the voltage fluctuation interval duration if it is determined to be an adjustment, and when obtaining the electrical property evaluation final value, it also includes: Set the minimum and maximum impact factors; If the impact factor is less than the minimum impact factor, adjusting the electrical property evaluation value by a first adjustment coefficient; If the impact factor is greater than or equal to the minimum impact factor and less than or equal to the maximum impact factor, the electrical property evaluation value is adjusted by a second adjustment coefficient; If the impact factor is greater than the maximum impact factor, adjusting the electrical property evaluation value by a third adjustment coefficient; Among them, the first adjustment coefficient is smaller than the second adjustment coefficient, and the second adjustment coefficient is smaller than the third adjustment coefficient.

6. The post-use detection and warning system for construction equipment according to claim 5, characterized in that: When the processing unit is further used to calculate the mechanical evaluation value according to the bearing vibration information, it includes: A standard vibration value is preset, a vibration waveform diagram output by a vibration sensor within a unit time is collected, a vibration average value is calculated, and the mechanical evaluation value is calculated based on the vibration average value and the vibration peak value: Sj=k*Aavg*e Af / AO ; In the above formula, Sj represents the mechanical evaluation value, k represents the adjustment coefficient, Aavg represents the vibration average value, Af represents the vibration peak value, and AO represents the standard vibration value.

7. The post-use detection and warning system for construction equipment according to claim 6, characterized in that: The processing unit is further configured to determine whether to adjust the mechanical evaluation value according to the bearing temperature information, including: Preset a maximum bearing temperature, and if the bearing temperature is less than or equal to the maximum bearing temperature, determine that the mechanical evaluation value does not need to be adjusted; If the bearing temperature is greater than the maximum bearing temperature, it is determined that the mechanical evaluation value needs to be adjusted.

8. The post-use detection and warning system for construction equipment according to claim 7, characterized in that: The processing unit is further configured to adjust the mechanical evaluation value according to the temperature information if it is determined to be an adjustment, and obtain a final mechanical evaluation value, including: Setting a first temperature and a second temperature, wherein the first temperature is lower than the second temperature; If the bearing temperature is lower than the first temperature, adjusting the mechanical evaluation value by a first adjustment coefficient; If the bearing temperature is greater than or equal to the first temperature and less than or equal to the second temperature, the mechanical evaluation value is adjusted by a second adjustment coefficient; If the bearing temperature is greater than the second temperature, adjusting the mechanical evaluation value by a third adjustment coefficient; The first adjustment coefficient is greater than the second adjustment coefficient, and the second adjustment coefficient is greater than the third adjustment coefficient.

9. The post-use detection and warning system for construction equipment according to claim 8, characterized in that: The early warning unit is used to obtain a total detection value by weighted summing the final value of the electrical evaluation and the initial value of the mechanical evaluation. When issuing an early warning based on the total detection value, it includes: Sz=α*Sd1+β*Sj1; In the above formula, Sz represents the total test value, α represents the weight coefficient of the final value of electrical evaluation, Sd1 represents the final value of electrical evaluation, β represents the weight coefficient of the final value of mechanical evaluation, and Sj1 represents the final value of mechanical evaluation; Set a first total value and a second total value, and the first total value is smaller than the second total value; If the total detection value is less than the first total value, a first-level warning is issued; If the total detection value is greater than or equal to the first total value and less than or equal to the second total value, a second-level warning is issued; If the total detection value is greater than the second total value, a third-level warning is issued; Among them, the warning levels from low to high are level one warning, level two warning and level three warning.

10. A post-use detection and early warning method for a construction device, applied to a post-use detection and early warning system for a construction device as claimed in any one of claims 1 to 9, characterized in that: include: A voltage sensor and a current sensor are arranged at the output end of the generator, and a vibration sensor and a temperature sensor are arranged on the bearing seat; Collecting power information and operating condition information of the generator, wherein the power information includes output voltage and output current, and the operating condition information includes bearing vibration information and bearing temperature information; Calculating the electrical property evaluation value according to the fluctuation value of the output voltage and the fluctuation value of the output current, judging whether to adjust the electrical property evaluation value according to the voltage fluctuation duration, and if it is judged to be adjusted, adjusting the electrical property evaluation value according to the voltage fluctuation duration and the voltage fluctuation interval duration to obtain a final electrical property evaluation value; Calculating the mechanical evaluation value according to the bearing vibration information, judging whether to adjust the mechanical evaluation value according to the bearing temperature information, and if it is judged to be adjusted, adjusting the mechanical evaluation value according to the temperature information to obtain a final mechanical evaluation value; The total detection value is obtained by weighted summing the final value of the electrical evaluation and the initial value of the mechanical evaluation, and an early warning is issued based on the total detection value.

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