Engine Vibration Monitoring Method, Device, Equipment and Storage Medium

Abstract

The present invention discloses an engine vibration monitoring method, device, equipment and storage medium. The present invention discloses that: calibrate the second peak acceleration collected by a vibration transmitter according to the first peak acceleration collected by a vibration sensor, determine the vibration alarm information of a target engine according to the calibrated target peak acceleration, and perform vibration monitoring on the target engine based on the vibration alarm information; since the present invention respectively collects the acceleration of the engine during the bench test through the vibration sensor and the vibration transmitter, the calibrated target peak acceleration can be accurately obtained, effectively ensuring the accuracy of the vibration alarm information set based on the target peak acceleration, thereby realizing effective vibration monitoring of the engine, and thus timely implementing protection measures for the engine when the engine state is abnormal, effectively avoiding the problem of engine damage during the bench test.

Description

Technical Field

[0001] The present invention relates to the technical field of engine testing, and particularly to an engine vibration monitoring method, device, equipment and storage medium. Background Art

[0002] With the progress of society and the development of science and technology, the production and R & D of automobile engines have become more and more mature. As an essential test device in the production and R & D process of engines, the importance of the engine test bench is self-evident. At present, during the bench test of an engine, the existing test bench only monitors the temperature, pressure, etc. of the engine, and cannot effectively monitor the vibration of the engine during the bench test. Therefore, the abnormal state of the engine cannot be detected in time, resulting in the problem that the engine is easily damaged.

[0003] The above content is only used to assist in understanding the technical solution of the present invention, and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main object of the present invention is to provide an engine vibration monitoring method, device, equipment and storage medium, aiming to solve the technical problem that the abnormal state of the engine cannot be detected in time in the prior art, resulting in the problem that the engine is easily damaged.

[0005] To achieve the above object, the present invention provides an engine vibration monitoring method, and the method includes the following steps:

[0006] Collect the target engine through a pre-installed vibration sensor, and determine the first peak acceleration of the target engine during the bench test according to the sensor collection result;

[0007] Install a vibration transmitter according to the sensor collection result, and collect the target engine through the vibration transmitter, and determine the second peak acceleration of the target engine during the bench test according to the transmitter collection result;

[0008] Calibrate the second peak acceleration according to the first peak acceleration to obtain the target peak acceleration;

[0009] Determine the vibration alarm information of the target engine according to the target peak acceleration, and perform vibration monitoring on the target engine based on the vibration alarm information.

[0010] Optionally, the step of collecting the target engine through a pre-installed vibration sensor and determining the first peak acceleration of the target engine during the bench test according to the sensor collection result includes:

[0011] Collect the target engine through a pre-installed vibration sensor to obtain the first acceleration information of the target engine during the bench test, as well as the acceleration time information corresponding to the first acceleration information;

[0012] Perform time-domain analysis on the first acceleration information according to the acceleration time information;

[0013] Determine the first peak acceleration of the target engine during the bench test according to the time-domain analysis result.

[0014] Optionally, the performing time-domain analysis on the first acceleration information according to the acceleration time information includes:

[0015] Obtain the time-axis information of the target engine during the bench test;

[0016] Synchronize the acceleration time information according to the time-axis information;

[0017] Perform time-domain analysis on the first acceleration information according to the synchronized acceleration time information.

[0018] Optionally, the collecting the target engine through a pre-installed vibration sensor and determining the first peak acceleration of the target engine during the bench test according to the sensor collection result includes:

[0019] Collect the target engine through a pre-installed vibration sensor to obtain the first acceleration information of the target engine during the bench test, as well as the engine speed information corresponding to the first acceleration information;

[0020] Determine the engine frequency information corresponding to the first acceleration information according to the engine speed information;

[0021] Perform frequency-domain analysis on the first acceleration information according to the engine frequency information;

[0022] Determine the first peak acceleration of the target engine during the bench test according to the frequency-domain analysis result.

[0023] Optionally, the determining the engine frequency information corresponding to the first acceleration information according to the engine speed information includes:

[0024] Obtain the engine information of the target engine;

[0025] Determine the filtering order according to the engine information, and filter the engine frequency information based on the filtering order to obtain the target frequency information;

[0026] Determine the engine frequency information corresponding to the first acceleration information according to the target frequency information.

[0027] Optionally, collecting the target engine through a pre-installed vibration sensor, and determining the first peak acceleration of the target engine during the bench test according to the sensor collection result includes:

[0028] Install the vibration sensor based on a preset bench test strategy, and conduct a bench test on the target engine;

[0029] Determine the vibration collection duration of the vibration sensor according to the preset bench test strategy;

[0030] Collect the target engine through the pre-installed vibration sensor based on the vibration collection duration, and determine the first peak acceleration of the target engine during the bench test according to the sensor collection result.

[0031] Optionally, determining the vibration alarm information of the target engine according to the target peak acceleration includes:

[0032] Obtain the safety factor of the target engine;

[0033] Determine the acceleration threshold of the target engine according to the safety factor and the target peak acceleration;

[0034] Determine the vibration alarm information of the target engine according to the acceleration threshold.

[0035] In addition, to achieve the above object, the present invention also proposes an engine vibration monitoring device, and the engine vibration monitoring device includes:

[0036] A sensor collection module, configured to collect the target engine through a pre-installed vibration sensor, and determine the first peak acceleration of the target engine during the bench test according to the sensor collection result;

[0037] A transmitter collection module, configured to install a vibration transmitter according to the sensor collection result, and collect the target engine through the vibration transmitter, and determine the second peak acceleration of the target engine during the bench test according to the transmitter collection result;

[0038] An acceleration calibration module, configured to calibrate the second peak acceleration according to the first peak acceleration to obtain a target peak acceleration;

[0039] A vibration monitoring module, configured to determine the vibration alarm information of the target engine according to the target peak acceleration, and perform vibration monitoring on the target engine based on the vibration alarm information.

[0040] In addition, to achieve the above object, the present invention further provides an engine vibration monitoring device, which includes: a memory, a processor, and an engine vibration monitoring program stored on the memory and executable on the processor. The engine vibration monitoring program is configured to implement the steps of the engine vibration monitoring method as described above.

[0041] In addition, to achieve the above object, the present invention further provides a storage medium on which an engine vibration monitoring program is stored. When the engine vibration monitoring program is executed by a processor, it implements the steps of the engine vibration monitoring method as described above.

[0042] The present invention collects data on a target engine through a pre-installed vibration sensor, determines the first peak acceleration of the target engine during a bench test based on the sensor collection results, installs a vibration transmitter according to the sensor collection results, and collects data on the target engine through the vibration transmitter. The second peak acceleration of the target engine during the bench test is determined based on the transmitter collection results. The second peak acceleration is calibrated according to the first peak acceleration to obtain a target peak acceleration. The vibration alarm information of the target engine is determined based on the target peak acceleration, and vibration monitoring of the target engine is performed based on the vibration alarm information. Since the present invention collects the acceleration of the engine during the bench test through a vibration sensor and a vibration transmitter respectively, the calibrated target peak acceleration can be accurately obtained, effectively ensuring the accuracy of the vibration alarm information set based on the target peak acceleration, thereby effectively realizing vibration monitoring of the engine, and timely implementing protection measures for the engine when the engine state is abnormal, effectively avoiding the problem of engine damage during the bench test. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a schematic structural diagram of an engine vibration monitoring device in the hardware operating environment related to the solution of the embodiment of the present invention;

[0044] Figure 2 is a schematic flowchart of the first embodiment of the engine vibration monitoring method of the present invention;

[0045] Figure 3 is a schematic installation diagram of a vibration sensor and a vibration transmitter in the first embodiment of the engine vibration monitoring method of the present invention;

[0046] Figure 4 is a schematic diagram of the three-axis installation of the vibration sensor in the first embodiment of the engine vibration monitoring method of the present invention;

[0047] Figure 5Schematic diagram of the acceleration of the target engine in a durability cycle of the first embodiment of the engine vibration monitoring method of the present invention;

[0048] Figure 6 Schematic flow chart of the second embodiment of the engine vibration monitoring method of the present invention;

[0049] Figure 7 Schematic flow chart of the third embodiment of the engine vibration monitoring method of the present invention;

[0050] Figure 8 Block diagram of the structure of the first embodiment of the engine vibration monitoring device of the present invention.

[0051] The realization, functional characteristics and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiments

[0052] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] Refer to Figure 1 , Figure 1 Schematic diagram of the structure of the engine vibration monitoring device in the hardware operating environment related to the embodiment solution of the present invention.

[0054] As Figure 1 shown, the engine vibration monitoring device may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display) and an input unit such as a keyboard (Keyboard). Optionally, the user interface 1003 may further include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed Random Access Memory (RAM) or a stable Non-Volatile Memory (NVM), such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0055] Those skilled in the art can understand that Figure 1 the structure shown in does not constitute a limitation on the engine vibration monitoring device, and may include more or fewer components than shown, or combine some components, or have different component arrangements.

[0056] As shown Figure 1 in FIG., the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and an engine vibration monitoring program.

[0057] In Figure 1 the engine vibration monitoring device shown in FIG., the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the engine vibration monitoring device of the present invention may be disposed in the engine vibration monitoring device, and the engine vibration monitoring device calls the engine vibration monitoring program stored in the memory 1005 through the processor 1001 and executes the engine vibration monitoring method provided by the embodiments of the present invention.

[0058] The embodiments of the present invention provide an engine vibration monitoring method. Referring to Figure 2 , Figure 2 FIG. is a schematic flowchart of a first embodiment of an engine vibration monitoring method of the present invention.

[0059] In this embodiment, the engine vibration monitoring method includes the following steps:

[0060] Step S10: Collect the target engine through a pre-installed vibration sensor, and determine a first peak acceleration of the target engine during a bench test according to the sensor collection result.

[0061] It should be understood that the execution subject of the method in this embodiment may be an engine vibration monitoring device having data processing, network communication, and program running functions, such as a test controller of an engine test bench, or other devices or equipment capable of implementing the same or similar functions. Here, the above-mentioned engine vibration monitoring device (hereinafter referred to as the vibration monitoring device) is used as an example for description.

[0062] It should be noted that, in order to ensure the accuracy of data collection, the vibration monitoring device pre-installs the vibration sensor on the target engine and the dynamometer corresponding to the target engine. Specifically, the above-mentioned vibration sensors are respectively installed on the flywheel end of the target engine and the bearing of the dynamometer. For details, refer to Figure 3 , Figure 3 FIG. is a schematic structural diagram of the installation of the vibration sensor and the vibration transmitter.

[0063] In order to ensure the stability of the vibration test data, the installation requirements are as follows: It is required that the installation directions of the three axes of the vibration sensor (the three axes include the X axis, the Y axis, and the Z axis) correspond as Figure 4 shown Figure 4It is a schematic diagram of the three-axis installation of the vibration sensor. Among them, the target engine end is installed on both sides of the cylinder block within the range of 100 mm from the flywheel surface, and the dynamometer is installed at the uppermost position in the center of the bearing seat.

[0064] Further, in order to accurately collect information on the target engine, step S10 may include:

[0065] Install the vibration sensor based on a preset bench test strategy and conduct a bench test on the target engine;

[0066] Determine the vibration acquisition duration of the vibration sensor according to the preset bench test strategy;

[0067] Collect the target engine based on the vibration acquisition duration through the pre-installed vibration sensor, and determine the first peak acceleration of the target engine during the bench test according to the sensor acquisition results.

[0068] It should be noted that the above first peak acceleration may be the maximum acceleration of the target engine collected by the vibration sensor within a bench test cycle. The above bench test cycle may be the durability cycle of the target engine during the bench test. Refer to Figure 5 , Figure 5 is the acceleration schematic diagram of the target engine within a durability cycle. As Figure 5 shown, the abscissa is time and the ordinate is acceleration. During the bench test of the engine, the engine acceleration is in different acceleration stages, and the acceleration stages include the low-speed stage, the medium-speed stage, the high-speed stage, and the ultra-high-speed stage.

[0069] The target engine usually needs to run for a total of several hundred hours during the bench test (for example, the durability test). Generally, it runs the same cycle repeatedly. The cycle time multiplied by the number of cycles is the total time. For example, as Figure 5 shown in this cycle, the cycle time of each cycle is 1600 s. One cycle period refers to the 1600 s in this example. Testing more than one cycle is to be able to collect all working conditions during the durability test.

[0070] It should be understood that the vibration monitoring device collects bench test data of the target engine in a preset operating condition through the vibration sensor, obtains the acceleration information of the target engine during the bench test (the acceleration information may be the acceleration change information of the target engine during the bench test), and conducts a total value analysis and order analysis on the acceleration data to obtain the first peak acceleration of the target engine during the bench test.

[0071] In a specific implementation, the vibration monitoring device can analyze the acceleration information collected by the vibration sensor through analysis methods such as time-domain analysis or frequency-domain analysis, so as to determine the first peak acceleration according to the analysis results.

[0072] The above time-domain analysis can be that the vibration monitoring device extracts the sensor time information from the acceleration information collected by the sensor, obtains the test time axis information in the bench test, synchronizes the test time axis information with the sensor time information, and performs time-domain analysis on the acceleration information according to the synchronized time information, so as to obtain the first peak acceleration.

[0073] The above frequency-domain analysis can be to obtain the rotational speed information of the target engine during the bench test, calculate the frequency information corresponding to the rotational speed information according to the following formula 1. Formula 1 is the frequency calculation formula, where f is the frequency, r is the rotational speed, and n is the order. Then, perform frequency-domain analysis based on the frequency information and the acceleration information, perform order filtering on the analysis results, and filter out the second-order vibration data, so as to obtain the first peak acceleration.

[0074] f = r / 60 × n Formula 1

[0075] Step S20: Install a vibration transmitter according to the sensor acquisition result, collect the target engine through the vibration transmitter, and determine the second peak acceleration of the target engine during the bench test according to the acquisition result of the transmitter.

[0076] It should be noted that the sensor acquisition result can be the engine operation information collected by the vibration sensor. For example, the sensor acquisition result can include the rotational speed information, torque information, acceleration information, peak acceleration, and the acceleration direction corresponding to the peak acceleration of the target engine.

[0077] The above sensor can be a device or apparatus that can sense the measured quantity and convert it into an available output signal according to a certain rule, usually composed of a sensitive element and a conversion unit. When the output is a specified standard signal, it is called a transmitter. The above vibration sensor can be a sensor that can sense mechanical motion vibration parameters (mechanical vibration speed, frequency, acceleration, etc.) and convert them into available output signals. Therefore, a vibration transmitter is a device or apparatus that converts mechanical motion vibration parameters (mechanical vibration speed, frequency, acceleration, etc.) into a specified standard output signal.

[0078] It should be understood that the vibration monitoring device determines the acceleration direction corresponding to the peak acceleration of the target engine according to the sensor acquisition result, determines the installation direction of the vibration transmitter according to the acceleration direction, and refers to Figure 3 ... Based on the above installation direction, install the vibration transmitter on the engine flywheel end and the dynamometer bearing respectively.

[0079] The vibration monitoring device collects bench test data of a target engine under the same preset operating conditions through a vibration transmitter (where the collection duration is not less than one durability cycle period), obtains the acceleration information collected by the vibration transmitter, and analyzes the acceleration information collected by the vibration transmitter to obtain the second peak acceleration.

[0080] Step S30: Calibrate the second peak acceleration according to the first peak acceleration to obtain the target peak acceleration.

[0081] It should be noted that the target peak acceleration can be the relatively accurate maximum acceleration of the target engine during the bench test obtained after calibration.

[0082] It should be understood that in order to ensure the accuracy of the peak acceleration of the target engine collected, the vibration monitoring device in this embodiment compares the first peak acceleration with the second peak acceleration, and calibrates the second peak acceleration collected by the vibration transmitter according to the comparison result, so as to obtain a more accurate target peak acceleration.

[0083] In specific implementation, the vibration monitoring device compares the data collected by the vibration test system with the vibration data collected by the vibration transmitter under the same working conditions and directions, and adjusts the reading electricity (calibration) corresponding to the current value of the vibration transmitter so that it is within the range of ±2% of the acceleration magnitude collected by the vibration test system; specific calibration method: Take the current output by the transmitter in the stationary state as the 0 point, set different full points in the bench test system, so that under the working conditions corresponding to the maximum acceleration calculated by the vibration test system, thus ensuring that the display value deviation of the bench test system is within the range of ±2%.

[0084] Step S40: Determine the vibration alarm information of the target engine according to the target peak acceleration, and perform vibration monitoring on the target engine based on the vibration alarm information.

[0085] It should be noted that the vibration alarm information can be alarm monitoring information for monitoring the vibration information of the target engine during operation. For example, the vibration alarm information can be an acceleration monitoring threshold.

[0086] It should be understood that the vibration monitoring device sets the acceleration monitoring threshold corresponding to the target engine according to the target peak acceleration and the engine information of the target engine, and monitors the acceleration of the target engine during the bench test based on the acceleration monitoring threshold. That is, when the current acceleration of the target engine during the bench test exceeds the above acceleration monitoring threshold, an alarm is given, and the dynamometer is controlled to unload, and the throttle voltage is controlled to the idle position, thus effectively avoiding the problem of engine damage caused by too high acceleration of the target engine.

[0087] Further, in order to improve the accuracy of vibration monitoring, step S40 described above may include:

[0088] Obtain the safety factor of the target engine;

[0089] Determine the acceleration threshold of the target engine according to the safety factor and the target peak acceleration;

[0090] Determine the vibration alarm information of the target engine according to the acceleration threshold.

[0091] It should be noted that the safety factor can be a coefficient used to calculate the acceleration threshold based on different operating conditions of the engine or based on different engine information. For example, the safety factor can be √2, etc. Refer to formula 2 below. Formula 2 is the acceleration threshold calculation formula, where P is the acceleration threshold, S is the target peak acceleration, and K is the safety factor. The calculated acceleration threshold is used as the acceleration upper limit of the target engine in the bench test, and vibration monitoring is carried out based on the acceleration threshold.

[0092] P = S × K Formula 2

[0093] In this embodiment, the target engine is collected by a pre-installed vibration sensor, the first peak acceleration of the target engine during the bench test is determined according to the sensor collection result, a vibration transmitter is installed according to the sensor collection result, and the target engine is collected by the vibration transmitter. The second peak acceleration of the target engine during the bench test is determined according to the transmitter collection result, the second peak acceleration is calibrated according to the first peak acceleration to obtain the target peak acceleration, the vibration alarm information of the target engine is determined according to the target peak acceleration, and vibration monitoring is carried out on the target engine based on the vibration alarm information; Since the present invention collects the acceleration of the engine during the bench test by a vibration sensor and a vibration transmitter respectively, the calibrated target peak acceleration is accurately obtained, effectively ensuring the accuracy of the vibration alarm information set based on the target peak acceleration, thereby realizing effective vibration monitoring of the engine, and thus timely implementing protection measures for the engine when the engine state is abnormal, effectively avoiding the problem of engine damage during the bench test.

[0094] Reference Figure 6 , Figure 6 is a schematic flow chart of the second embodiment of a method for monitoring engine vibration according to the present invention.

[0095] Based on the above first embodiment, in this embodiment, step S10 includes:

[0096] Step S111: Collect the target engine through a pre-installed vibration sensor to obtain the first acceleration information of the target engine during the bench test, and the acceleration time information corresponding to the first acceleration information.

[0097] It should be noted that the first acceleration information can be the acceleration change information of the target engine collected by the vibration sensor during the bench test. The above acceleration time information can be the information of the acceleration changing with time collected by the vibration sensor. For example, when the target engine has been running for 300 seconds, the acceleration is 45 km / h.

[0098] Step S112: Perform time-domain analysis on the first acceleration information according to the acceleration time information.

[0099] Furthermore, in order to improve the accuracy of time-domain analysis, the above step S112 may include:

[0100] Step S1121: Obtain the time-axis information of the target engine during the bench test;

[0101] Step S1122: Synchronize the acceleration time information according to the time-axis information.

[0102] Step S1123: Perform time-domain analysis on the first acceleration information according to the synchronized acceleration time information.

[0103] It should be noted that time-domain analysis can be that the vibration monitoring device extracts the first acceleration time information from the first acceleration information collected by the sensor, obtains the test time-axis information in the bench test, synchronizes the test time-axis information with the first acceleration time information, and performs time-domain analysis on the first acceleration information according to the synchronized time information, so as to obtain the first peak acceleration.

[0104] Step S113: Determine the first peak acceleration of the target engine during the bench test according to the time-domain analysis result.

[0105] It should be understood that the vibration monitoring device constructs a time-domain analysis diagram according to the first acceleration information and the synchronized time information, referring to Figure 5 , where the abscissa is time and the ordinate is acceleration, and time-domain analysis is performed according to the time-domain analysis diagram to determine the first peak acceleration.

[0106] In this embodiment, the target engine is collected by a pre-installed vibration sensor to obtain the first acceleration information of the target engine during the bench test, and the acceleration time information corresponding to the first acceleration information. The first acceleration information is subjected to time-domain analysis according to the acceleration time information, and the first peak acceleration of the target engine during the bench test is determined according to the time-domain analysis result. Since the first acceleration information is subjected to time-domain analysis according to the acceleration time information in this embodiment, the first peak acceleration of the target engine during the bench test is accurately obtained, improving the efficiency of engine monitoring.

[0107] Reference Figure 7 , Figure 7 is a schematic flow chart of the third embodiment of an engine vibration monitoring method of the present invention.

[0108] Based on the above first embodiment, in this embodiment, the step S10 includes:

[0109] Step S121: The target engine is collected by a pre-installed vibration sensor to obtain the first acceleration information of the target engine during the bench test, and the engine speed information corresponding to the first acceleration information;

[0110] Step S122: Determine the engine frequency information corresponding to the first acceleration information according to the engine speed information;

[0111] Step S123: Perform frequency-domain analysis on the first acceleration information according to the engine frequency information;

[0112] Step S124: Determine the first peak acceleration of the target engine during the bench test according to the frequency-domain analysis result.

[0113] It should be noted that the above frequency-domain analysis can be to obtain the speed information of the target engine during the bench test, calculate the frequency information corresponding to the speed information according to the above formula 1, and then perform frequency-domain analysis according to the frequency information and acceleration information, and perform order filtering on the analysis result to filter out the second-order vibration data, so as to obtain the first peak acceleration.

[0114] It should be understood that the vibration monitoring device collects the first acceleration information of the target engine through a vibration sensor, obtains the engine speed information of the target engine during the bench test through a bench monitoring system, calculates the engine frequency information of the target engine during the bench test according to the above formula 1, performs second-order filtering on the engine frequency information, constructs a frequency-domain analysis diagram according to the filtered frequency information and the first acceleration information, and then determines the first peak acceleration according to the frequency-domain analysis diagram.

[0115] Further, in order to improve the accuracy of frequency information, step S122 described above may include:

[0116] Step S1221: Obtain the engine information of the target engine;

[0117] Step S1222: Determine the filtering order according to the engine information, and filter the engine frequency information based on the filtering order to obtain target frequency information;

[0118] Step S1223: Determine the engine frequency information corresponding to the first acceleration information according to the target frequency information.

[0119] It should be noted that for an engine, the main vibration excitation energy comes from the ignition combustion in the engine cylinder. The second order means that when the engine runs one cycle, it excites two vibrations, which exactly corresponds to the ignition combustion twice when a 4-cylinder engine rotates one circle. Therefore, it is more reasonable to separate the second-order vibration for analysis. Two frequency variables are calculated according to the above formula 1, and then second-order filtering is performed to obtain the target frequency information. Then, the acceleration information corresponding to the target frequency information is obtained, so as to obtain the first peak acceleration.

[0120] In this embodiment, the target engine is collected by a pre-installed vibration sensor to obtain the first acceleration information of the target engine during the bench test, and the engine speed information corresponding to the first acceleration information. The engine frequency information corresponding to the first acceleration information is determined according to the engine speed information, the first acceleration information is subjected to frequency domain analysis according to the engine frequency information, and the first peak acceleration of the target engine during the bench test is determined according to the frequency domain analysis result; since in this embodiment, the engine frequency information corresponding to the first acceleration information is determined according to the engine speed information, the efficiency of frequency domain analysis is improved, the first acceleration information is subjected to frequency domain analysis according to the engine frequency information, and the first peak acceleration of the target engine during the bench test is determined according to the frequency domain analysis result, thereby ensuring the accuracy of the peak acceleration and improving the efficiency of engine monitoring.

[0121] In addition, an embodiment of the present invention further provides a storage medium, on which an engine vibration monitoring program is stored. When the engine vibration monitoring program is executed by a processor, the steps of the engine vibration monitoring method described above are implemented.

[0122] Since this storage medium adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated here one by one.

[0123] Refer to Figure 8 , Figure 8This is the structural block diagram of the first embodiment of the engine vibration monitoring device of the present invention.

[0124] As Figure 8 shown, the engine vibration monitoring device proposed in the embodiment of the present invention includes:

[0125] A sensor acquisition module 10, configured to collect the target engine through a pre-installed vibration sensor, and determine the first peak acceleration of the target engine during the bench test according to the sensor acquisition result;

[0126] A transmitter acquisition module 20, configured to install a vibration transmitter according to the sensor acquisition result, and collect the target engine through the vibration transmitter, and determine the second peak acceleration of the target engine during the bench test according to the transmitter acquisition result;

[0127] An acceleration calibration module 30, configured to calibrate the second peak acceleration according to the first peak acceleration to obtain a target peak acceleration;

[0128] A vibration monitoring module 40, configured to determine the vibration alarm information of the target engine according to the target peak acceleration, and perform vibration monitoring on the target engine based on the vibration alarm information.

[0129] Further, the sensor acquisition module 10 is further configured to collect the target engine through a pre-installed vibration sensor, obtain the first acceleration information of the target engine during the bench test, and the acceleration time information corresponding to the first acceleration information; perform time-domain analysis on the first acceleration information according to the acceleration time information; determine the first peak acceleration of the target engine during the bench test according to the time-domain analysis result.

[0130] Further, the sensor acquisition module 10 is further configured to obtain the time-axis information of the target engine during the bench test; synchronize the acceleration time information according to the time-axis information; perform time-domain analysis on the first acceleration information according to the synchronized acceleration time information.

[0131] Further, the sensor acquisition module 10 is further configured to collect the target engine through a pre-installed vibration sensor, obtain the first acceleration information of the target engine during the bench test, and the engine speed information corresponding to the first acceleration information; determine the engine frequency information corresponding to the first acceleration information according to the engine speed information; perform frequency-domain analysis on the first acceleration information according to the engine frequency information; determine the first peak acceleration of the target engine during the bench test according to the frequency-domain analysis result.

[0132] Further, the sensor acquisition module 10 is further configured to obtain engine information of the target engine; determine a filtering order according to the engine information, and filter the engine frequency information based on the filtering order to obtain target frequency information; and determine the engine frequency information corresponding to the first acceleration information according to the target frequency information.

[0133] Further, the sensor acquisition module 10 is further configured to install a vibration sensor based on a preset bench test strategy, and perform a bench test on the target engine; determine the vibration acquisition duration of the vibration sensor according to the preset bench test strategy; collect the target engine based on the vibration acquisition duration through the pre-installed vibration sensor, and determine the first peak acceleration of the target engine during the bench test according to the sensor acquisition result.

[0134] Further, the vibration monitoring module 40 is further configured to obtain the safety factor of the target engine; determine the acceleration threshold of the target engine according to the safety factor and the target peak acceleration; and determine the vibration alarm information of the target engine according to the acceleration threshold.

[0135] In this embodiment, the target engine is collected by a pre-installed vibration sensor, the first peak acceleration of the target engine during the bench test is determined according to the sensor acquisition result, a vibration transmitter is installed according to the sensor acquisition result, and the target engine is collected by the vibration transmitter. The second peak acceleration of the target engine during the bench test is determined according to the transmitter acquisition result, the second peak acceleration is calibrated according to the first peak acceleration to obtain the target peak acceleration, the vibration alarm information of the target engine is determined according to the target peak acceleration, and the target engine is vibration-monitored based on the vibration alarm information. Since the acceleration of the engine during the bench test is collected by the vibration sensor and the vibration transmitter respectively in the present invention, the calibrated target peak acceleration can be accurately obtained, effectively ensuring the accuracy of the vibration alarm information set based on the target peak acceleration, thereby realizing effective vibration monitoring of the engine, and timely implementing protection measures for the engine when the engine state is abnormal, effectively avoiding the problem of engine damage during the bench test.

[0136] It should be understood that the above is only an example for illustration, and does not constitute any limitation to the technical solution of the present invention. In specific applications, those skilled in the art can set according to needs, and the present invention does not make any restrictions in this regard.

[0137] It should be noted that the workflow described above is only illustrative and does not limit the protection scope of the present invention. In actual applications, those skilled in the art can select some or all of them according to actual needs to achieve the purpose of the solution of this embodiment, and no limitation is made here.

[0138] In addition, for the technical details not described in detail in this embodiment, reference can be made to the engine vibration monitoring method provided in any embodiment of the present invention, and details will not be repeated here.

[0139] In addition, it should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or system including that element.

[0140] The serial numbers of the above embodiments of the present invention are only for description and do not represent the superiority or inferiority of the embodiments.

[0141] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as a read-only memory (ROM) / RAM, magnetic disk, optical disk), and includes several instructions for causing a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present invention.

[0142] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An engine vibration monitoring method, characterized in that, The engine vibration monitoring method is applied to an engine test bench, and the engine vibration monitoring method includes: Collect the target engine through a pre-installed vibration sensor, and determine the first peak acceleration of the target engine during the bench test according to the sensor collection result; Determine the installation direction of the vibration transmitter according to the acceleration direction corresponding to the first peak acceleration, install the vibration transmitter based on the installation direction, and collect the target engine through the vibration transmitter. Determine the second peak acceleration of the target engine during the bench test according to the transmitter collection result, where the vibration transmitter is installed at a position corresponding to the vibration sensor on the engine flywheel end and the dynamometer bearing; Calibrate the second peak acceleration according to the first peak acceleration to obtain the target peak acceleration; Determine the vibration alarm information of the target engine according to the target peak acceleration, and perform vibration monitoring on the target engine based on the vibration alarm information.

2. The engine vibration monitoring method according to claim 1, characterized in that, The step of collecting the target engine through a pre-installed vibration sensor and determining the first peak acceleration of the target engine during the bench test according to the sensor collection result includes: Collect the target engine through a pre-installed vibration sensor to obtain the first acceleration information of the target engine during the bench test and the acceleration time information corresponding to the first acceleration information; Perform time-domain analysis on the first acceleration information according to the acceleration time information; Determine the first peak acceleration of the target engine during the bench test according to the time-domain analysis result.

3. The engine vibration monitoring method according to claim 2, characterized in that, The step of performing time-domain analysis on the first acceleration information according to the acceleration time information includes: Obtain the time-axis information of the target engine during the bench test; Synchronize the acceleration time information according to the time-axis information; Perform time-domain analysis on the first acceleration information according to the synchronized acceleration time information.

4. The engine vibration monitoring method according to claim 1, characterized in that, The step of collecting the target engine through a pre-installed vibration sensor and determining the first peak acceleration of the target engine during the bench test according to the sensor collection result includes: Collect the target engine through a pre-installed vibration sensor to obtain the first acceleration information of the target engine during the bench test and the engine speed information corresponding to the first acceleration information; Determine the engine frequency information corresponding to the first acceleration information according to the engine speed information; Perform frequency-domain analysis on the first acceleration information according to the engine frequency information; Determine the first peak acceleration of the target engine during the bench test according to the frequency-domain analysis result.

5. The engine vibration monitoring method according to claim 4, characterized in that, The step of determining the engine frequency information corresponding to the first acceleration information according to the engine speed information includes: Obtain the engine information of the target engine; Determine the filtering order according to the engine information, and filter the engine frequency information based on the filtering order to obtain the target frequency information; Determine the engine frequency information corresponding to the first acceleration information according to the target frequency information.

6. The engine vibration monitoring method according to any one of claims 1 to 5, characterized in that, Collect the target engine through a pre-installed vibration sensor, and determine the first peak acceleration of the target engine during the bench test according to the sensor collection result, including: Install a vibration sensor based on a preset bench test strategy, and conduct a bench test on the target engine; Determine the vibration collection duration of the vibration sensor according to the preset bench test strategy; Collect the target engine through a pre-installed vibration sensor based on the vibration collection duration, and determine the first peak acceleration of the target engine during the bench test according to the sensor collection result.

7. The engine vibration monitoring method according to any one of claims 1 to 5, characterized in that, The determining the vibration alarm information of the target engine according to the target peak acceleration includes: Obtain the safety factor of the target engine; Determine the acceleration threshold of the target engine according to the safety factor and the target peak acceleration; Determine the vibration alarm information of the target engine according to the acceleration threshold.

8. An engine vibration monitoring device, characterized in that,The engine vibration monitoring device includes: A sensor acquisition module, configured to collect the target engine through a pre-installed vibration sensor, and determine the first peak acceleration of the target engine during the bench test according to the sensor collection result; A transmitter acquisition module, configured to determine the installation direction of the vibration transmitter according to the acceleration direction corresponding to the first peak acceleration, install the vibration transmitter based on the installation direction, and collect the target engine through the vibration transmitter, and determine the second peak acceleration of the target engine during the bench test according to the transmitter collection result, wherein the vibration transmitter is installed at a position corresponding to the vibration sensor on the engine flywheel end and the dynamometer bearing; An acceleration calibration module, configured to calibrate the second peak acceleration according to the first peak acceleration to obtain the target peak acceleration; A vibration monitoring module, configured to determine the vibration alarm information of the target engine according to the target peak acceleration, and perform vibration monitoring on the target engine based on the vibration alarm information.

9. An engine vibration monitoring device, characterized in that, The engine vibration monitoring device includes: a memory, a processor, and an engine vibration monitoring program stored on the memory and executable on the processor, where the engine vibration monitoring program is configured to implement the engine vibration monitoring method according to any one of claims 1 to 7.

10. A storage medium, characterized in that, An engine vibration monitoring program is stored on the storage medium, and when the engine vibration monitoring program is executed by a processor, it implements the engine vibration monitoring method according to any one of claims 1 to 7.

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