Engine abnormal sound detection equipment and method, engine production line and storage medium

Abstract

The invention discloses an engine abnormal sound detection device and method, an engine production line and a storage medium. The engine abnormal sound detection equipment comprises an engine test bed, a test bed industrial personal computer and a manufacturing execution system. The engine test bed is used for collecting engine noise data in the engine test off-line process; the test bed industrial personal computer is used for carrying out noise order analysis and vibration roughness analysis on the engine noise data, and judging whether the engine has squeal abnormal sound or knocking abnormal sound according to the analysis results of the noise order analysis and the vibration roughness analysis; and the manufacturing execution system is used for generating an abnormal sound detection result of the engine according to the result whether the engine has the squeal abnormal sound or the knocking abnormal sound judged by the test bed industrial personal computer, and the abnormal sound detection result is used for displaying whether the engine has the abnormal sound or not and displaying a corresponding abnormal sound type when determining that the abnormal sound exists. According to the invention, the abnormal sound of the engine can be detected in real time in the off-line process of the engine test run.

Description

Technical Field

[0001] The present invention relates to the field of engine technology, and in particular to an engine abnormal noise detection device, a method, an engine production line and a storage medium. Background Art

[0002] Abnormal engine noise refers to the sound produced by the engine during operation that is different from the sound during normal operation. This abnormal noise can reflect the technical condition of the engine and is usually related to factors such as fit clearance, lubrication conditions, temperature, load and speed.

[0003] Abnormal engine noise is one of the common failure modes. It will affect the safety and driving quality of the car and needs to be repaired as soon as possible. If the abnormal noise failure cannot be effectively intercepted during the engine test run, the engine failure will flow into the market, causing zero-kilometer failure. In addition, abnormal engine noise is currently detected through manual experience auscultation. The technician changes the engine operating conditions to reproduce the abnormal noise, and determines the location of the abnormal noise based on the characteristics and rules of the abnormal noise, the engine's operating conditions and fault signs. This method relies on the experience and skills of the technician. The possible limitations of using instruments to assist in the diagnosis of abnormal engine noise mainly include strong dependence on equipment, high costs and increased operational complexity. Summary of the invention

[0004] The present invention provides an engine abnormal noise detection device, a method, an engine production line and a storage medium to solve the problem that the current engine abnormal noise failure cannot be effectively intercepted in the engine test run and offline link, and relies on inaccurate manual detection.

[0005] According to one aspect of the present invention, there is provided an engine abnormal noise detection device, the engine abnormal noise detection device comprising an engine test bench, a test bench industrial computer and a manufacturing execution system;

[0006] The engine test bench is used to collect engine noise data during the engine test run, and feed the engine noise data back to the test bench industrial computer;

[0007] The test bench industrial computer is used to perform noise order analysis and vibration roughness analysis on the engine noise data, and determine whether the engine has abnormal howling or knocking noise according to the analysis results of the noise order analysis and the vibration roughness analysis;

[0008] The manufacturing execution system is used to generate an abnormal sound detection result of the engine based on the result of the test bench industrial computer determining whether the engine has an abnormal howling sound or a knocking sound. The abnormal sound detection result is used to display whether the engine has an abnormal sound, and display the corresponding abnormal sound type when it is determined that an abnormal sound exists.

[0009] Optionally, the engine test bench comprises a first noise sensor, a second noise sensor, a first vibration sensor, a second vibration sensor and a speed sensor, and the first noise sensor, the second noise sensor, the first vibration sensor, the second vibration sensor and the speed sensor are respectively arranged on the engine;

[0010] The first noise sensor, the second noise sensor, the first vibration sensor, the second vibration sensor and the speed sensor are used to collect engine noise data during an engine test run, and the engine noise data includes noise data of the engine collected by the first noise sensor and the second noise sensor, vibration data of the engine collected by the first vibration sensor and the second vibration sensor, and speed data of the engine collected by the speed sensor.

[0011] Optionally, the test bench industrial computer is also used to store the engine noise data, the result of determining whether the engine has abnormal howling noise or knocking noise, and the engine attribute information of the engine in a corresponding manner.

[0012] Optionally, the manufacturing execution system is further used to display the abnormal sound detection result through an abnormal sound pop-up box.

[0013] According to another aspect of the present invention, a method for detecting abnormal engine noise is provided. The method for detecting abnormal engine noise is applied to an abnormal engine noise detection device. The abnormal engine noise detection device includes an engine test bench, an industrial computer for the test bench, and a manufacturing execution system. The method for detecting abnormal engine noise includes:

[0014] During the engine test run, the engine noise data is collected by using the engine test bench, and the engine noise data is fed back to the test bench industrial computer;

[0015] Using the test bench industrial computer to perform noise order analysis and vibration roughness analysis on the engine noise data, and judging whether the engine has abnormal howling or knocking noise according to the analysis results of the noise order analysis and the vibration roughness analysis;

[0016] The manufacturing execution system is controlled to generate an abnormal sound detection result of the engine according to the result of the test bench industrial computer determining whether the engine has an abnormal sound such as a howling sound or a knocking sound. The abnormal sound detection result is used to display whether the engine has an abnormal sound, and when it is determined that an abnormal sound exists, the corresponding abnormal sound type is displayed.

[0017] Optionally, the engine noise data is subjected to noise order analysis and vibration roughness analysis using the test bench industrial computer, including:

[0018] The test bench industrial computer is used to collect statistics on the full-speed order energy distribution and the roughness energy distribution in the engine noise data, and noise order analysis and vibration roughness analysis are performed accordingly according to the full-speed order energy distribution and the roughness energy distribution.

[0019] Optionally, determining whether the engine has abnormal howling or knocking noise according to the analysis results of the noise order analysis and the vibration roughness analysis includes:

[0020] If the target order energy in the full-speed order energy distribution exceeds the order energy determination threshold, it is determined that the engine has abnormal howling sound;

[0021] If the target energy in the full-speed order energy distribution does not exceed the order energy determination threshold, it is determined that the engine does not have abnormal howling sound;

[0022] If the target roughness energy in the roughness energy distribution does not exceed the roughness energy determination threshold, it is determined that the engine has a knocking noise;

[0023] If the target roughness energy in the roughness energy distribution exceeds the roughness energy determination threshold, it is determined that there is no knocking noise in the engine.

[0024] Optionally, controlling the manufacturing execution system to generate an abnormal sound detection result of the engine according to the result of the test bench industrial computer determining whether the engine has abnormal howling sound or abnormal knocking sound, comprises:

[0025] The manufacturing execution system is controlled to generate an abnormal sound detection result of the engine, that is, the engine has an abnormal howling sound and / or the engine has an abnormal knocking sound, according to the determination of the engine having an abnormal howling sound and / or the engine having an abnormal knocking sound by the test bench industrial computer.

[0026] According to another aspect of the present invention, there is provided an engine production line, wherein the engine production line comprises the engine abnormal noise detection device according to any embodiment of the present invention.

[0027] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the engine abnormal noise detection method described in any embodiment of the present invention when executed.

[0028] The technical solution of the embodiment of the present invention, the engine abnormal noise detection equipment includes an engine test bench, a test bench industrial computer and a manufacturing execution system; the engine test bench is used to collect engine noise data during the engine test and offline process, and feed the engine noise data back to the test bench industrial computer; the test bench industrial computer is used to perform noise order analysis and vibration roughness analysis on the engine noise data, and determine whether the engine has abnormal howling or knocking noise according to the analysis results of the noise order analysis and the vibration roughness analysis; the manufacturing execution system is used to generate the abnormal noise detection result of the engine according to the result of the test bench industrial computer determining whether the engine has abnormal howling or knocking noise, and the abnormal noise detection result is used to display whether the engine has abnormal noise, and display the corresponding abnormal noise type when it is determined that there is abnormal noise. The present invention solves the problem that the current engine abnormal noise fault cannot be effectively intercepted in the engine test offline link, and relies on inaccurate manual detection, and realizes real-time detection of engine abnormal noise during the engine test offline process, with high accuracy in engine abnormal noise recognition and cost saving.

[0029] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 is a structural schematic diagram of an engine abnormal noise detection device provided according to an embodiment of the present invention;

[0032] Figure 2 is a schematic diagram of an engine operating condition provided according to an embodiment of the present invention;

[0033] Figure 3 is a screenshot of the main interface of the manufacturing execution system provided according to an embodiment of the present invention;

[0034] Figure 4 is a screenshot of an engine noise data collection interface of a manufacturing execution system provided according to an embodiment of the present invention;

[0035] Figure 5 is a flow chart of an engine abnormal noise detection method provided according to an embodiment of the present invention;

[0036] Figure 6 is a schematic diagram of noise order analysis provided according to an embodiment of the present invention;

[0037] Figure 7 is a schematic diagram of vibration roughness analysis provided according to an embodiment of the present invention;

[0038] Figure 8 is a schematic diagram showing an abnormal noise detection result of an engine provided according to an embodiment of the present invention;

[0039] Fig. 9 It is a schematic diagram of the architecture of a method for detecting abnormal engine noise provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0041] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0042] Figure 1A structural schematic diagram of an engine abnormal noise detection device is provided for an embodiment of the present invention. This embodiment can be applied to the situation of monitoring abnormal noise faults such as howling and knocking during the test run of the engine. The abnormal noise of the engine is an abnormal noise that occurs in the engine. In most cases, it has a certain regularity and randomness. Among them, howling and knocking are common abnormal noise types of the engine. In most cases, they have a certain regularity. Howling is a sharp and piercing noise generated during the operation of the engine. The characteristics are similar to a sharp whistle. Knocking is a periodic abnormal energy generated during the operation of the engine. The period is usually a multiple of the engine operation period. Once the abnormal noise of the engine occurs, it means that the technical condition of a certain mechanism of the engine has changed. According to fault statistics, 90% of the howling faults are related to gears and superchargers, and 80% of the knocking faults are related to moving parts. Based on this, an engine abnormal noise detection device is provided to realize real-time early warning of the test bench during the test run of the engine.

[0043] like Figure 1 As shown, the engine abnormal noise detection equipment includes an engine test bench, a test bench industrial computer and a manufacturing execution system; the engine test bench is used to collect engine noise data during the engine test run, and feed the engine noise data back to the test bench industrial computer; the test bench industrial computer is used to perform noise order analysis and vibration roughness analysis on the engine noise data, and determine whether the engine has abnormal howling noise or knocking noise according to the analysis results of the noise order analysis and vibration roughness analysis; the manufacturing execution system is used to generate an abnormal noise detection result of the engine according to the result of the test bench industrial computer determining whether the engine has abnormal howling noise or knocking noise, and the abnormal noise detection result is used to display whether the engine has abnormal noise, and display the corresponding abnormal noise type when it is determined that abnormal noise exists.

[0044] Among them, the engine noise data needs to be collected under specified working conditions, that is, it needs to be collected when the engine is in the idling stage and the speed-up stage respectively. The engine noise data includes the noise data collected when the engine is in the idling stage and the noise data collected when the engine is in the speed-up stage.

[0045] Knowable, such as Figure 2 As shown, after collecting the noise data of the engine in the idling stage during the engine test run, if the engine enters the speed-up stage at this time, the noise data of the engine will continue to be collected, and the noise data collection will be stopped after the engine exits the speed-up stage. However, if the engine does not enter the speed-up stage at this time, the noise data collection will be stopped directly.

[0046] Continue to see Figure 1As shown in Table 1 below, the engine test bench includes a first noise sensor ①, a second noise sensor ②, a first vibration sensor ③, a second vibration sensor ④ and a speed sensor ⑤, and the first noise sensor ①, the second noise sensor ②, the first vibration sensor ③, the second vibration sensor ④ and the speed sensor ⑤ are arranged on the engine respectively;

[0047] The first noise sensor, the second noise sensor, the first vibration sensor, the second vibration sensor and the speed sensor are used to collect engine noise data during the engine test run. The engine noise data includes engine noise data collected by the first noise sensor and the second noise sensor, engine vibration data collected by the first vibration sensor and the second vibration sensor, and engine speed data collected by the speed sensor.

[0048] Table 1 Sensor settings for engine test bench

[0049] aisle sensor Physical quantity unit 1 noise Sound pressure level dB 2 noise Sound pressure level dB 3 vibration Vibration acceleration g 4 vibration Vibration acceleration g 5 Speed Engine speed r / min

[0050] It can be known that the first noise sensor, the second noise sensor, the first vibration sensor, the second vibration sensor and the speed sensor can be selected and set according to the actual generation of engine noise. Figure 1 The description is for illustrative purposes only and is not intended to be limiting in any way.

[0051] Continue to see Figure 1 As shown, the test bench industrial computer is also used to store the engine noise data, the result of determining whether the engine has abnormal howling or knocking noise, and the engine attribute information of the engine.

[0052] The test bench industrial computer can be equipped with a separate file storage server to store the engine noise data, the result of determining whether the engine has abnormal howling or knocking noise, and the engine attribute information of the engine, thereby realizing automatic recording of the entire engine abnormal noise detection process.

[0053] It can be known that the engine attribute information of the engine can be obtained by but is not limited to one or more combinations of information such as engine number, model or production date. In this embodiment, the engine noise data and the result of determining whether the engine has abnormal howling or knocking noise are matched with the engine attribute information of the engine. The engine abnormal noise detection situation during the engine test run can be accurately retrieved through the engine attribute information, thereby ensuring the traceability of the engine abnormal noise detection.

[0054] Continue to see Figure 1 As shown, the manufacturing execution system is also used to display the abnormal sound detection result through an abnormal sound pop-up box.

[0055] Among them, the Manufacturing Execution System (MES) is a production information system for the workshop execution layer of manufacturing enterprises.

[0056] In this embodiment, in order to grasp the engine abnormal noise detection situation in real time during the engine test run, the manufacturing execution system can be controlled to synchronize the engine noise data received by the test bench industrial computer, and the test bench industrial computer can obtain in real time the result of whether the engine has abnormal howling or knocking noise determined by the test bench industrial computer. For a specific screenshot of the main interface of the manufacturing execution system, please refer to Figure 3 shown.

[0057] On the basis of the above, continue to see Figure 3 As shown, based on the noise and vibration monitoring function, it can be further expanded to obtain Figure 4 The screenshot of the engine noise data collection interface of the manufacturing execution system is shown in Figure 4 As shown in the figure, the definitions of each edit box and drop-down box are as follows: "Hardware Channel": When the page is opened, the currently available hardware channel information is obtained by calling the NI SDK, added to the drop-down box, and its default value is shown according to the figure above. If no data is obtained, it will be displayed as empty here, and all buttons on this page are unavailable; "Input Mode": The drop-down box selection values ​​are "Pseudodifferential", "Differential", "Single-ended - Non-grounded (Nrse)", "Single-ended - Grounded (Rse)", and the default value is "Pseudodifferential"; "IEPE Excitation": The drop-down box selection values ​​are "Internal (Internal)", "External (E xternal), "Off (None)", the default value is "Internal"; "IEPE current": the default value is 4, the unit is mA, here limit the input value to an integer between 4 and 20; "Sampling rate": configure the sampling rate of the current channel, the default value is as shown in the interface, the unit here is Hz, the data is limited to an integer between 1 and 25600; "Maximum sound pressure level": configure the highest range when monitoring sound pressure level; the default is 120db; "Sensitivity": fill in the sensitivity data of the sensor here; "Coupling mode": configure the coupling mode between this channel and the sensor, the options are "AC", "DC", "GND", the default is "DC"; Acceleration "Maximum value", "Minimum value": configure the maximum and minimum ranges when testing acceleration.

[0058] Furthermore, Figure 4The real-time collected data of the first noise sensor, the second noise sensor, the first vibration sensor and the second vibration sensor can also be displayed. The vertical axis can be automatically displayed according to the actual value, and the horizontal axis is the time axis, which scrolls according to the time. The time length of the display area can be adjusted between 1 second and 10 seconds.

[0059] Operation section: This section is the button operation area, which is used to save configuration and start and stop acquisition. Among them, the "Save Configuration" button is used to save the current channel configuration and save it locally permanently. It can be automatically brought out the next time the page is opened. When data acquisition is in progress, the state of this button is only available when the acquisition is stopped. "Start Acquisition" button, this button is used to start data acquisition. After the acquisition starts, the "Save Configuration" and "Stop Acquisition" buttons become unavailable. The "Stop Acquisition" button is unavailable by default and is only available in normal acquisition. It is used to stop acquisition.

[0060] It can be seen that when the page is displayed, if you click the close button of the window, if it is in the data collection state, a prompt will be displayed saying "Data collection is in progress, please stop the collection and close the window". If the data collection has been completed, you can close this window by clicking the close button.

[0061] Based on the same inventive concept, Figure 5 A flowchart of an engine abnormal noise detection method is provided for an embodiment of the present invention. The engine abnormal noise detection method can be performed by an engine abnormal noise detection device, which includes an engine test bench, a test bench industrial computer and a manufacturing execution system. The engine abnormal noise detection device can be configured on an engine production line. Figure 5 and Fig. 9 As shown, the engine abnormal noise detection method includes:

[0062] S110. During the engine test run, the engine noise data is collected by using the engine test bench, and the engine noise data is fed back to the test bench industrial computer.

[0063] S120. Perform noise order analysis and vibration roughness analysis on the engine noise data using the test bench industrial computer, and determine whether the engine has abnormal howling or knocking noise based on the analysis results of the noise order analysis and the vibration roughness analysis.

[0064] Specifically, the full-speed order energy distribution and roughness energy distribution in the engine noise data are statistically analyzed using the test bench industrial computer, and the noise order analysis and vibration roughness analysis are performed accordingly based on the full-speed order energy distribution and the roughness energy distribution.

[0065] Among them, the full-speed order energy distribution refers to the energy distribution of each order vibration or noise signal at different speeds during the operation of rotating machinery. Noise order analysis is an analysis method that associates the spectrum and time history with the speed of rotating parts. Noise order analysis is used to reveal the vibration and noise mechanism.

[0066] In this embodiment, the gear noise orders corresponding to different models are considered, specific orders are extracted, order widths are limited, and the sound pressure levels of the full speed order energy are counted. Figure 6 and Fig. 9 As shown in the figure, when the proportion of scattered points with large full-speed order energy exceeds the order energy judgment threshold, it is considered that there is a howling fault, that is, if the target order energy in the full-speed order energy distribution exceeds the order energy judgment threshold, it is determined that the engine has a howling abnormal sound; if the target energy in the full-speed order energy distribution does not exceed the order energy judgment threshold, it is determined that the engine does not have a howling abnormal sound. Optionally, the order energy judgment threshold is generally set to 80dB.

[0067] Roughness is a psychological indicator that describes the feeling of being noisy, harsh, rough, aggressive, etc. A 60dB single-frequency 1000Hz sine wave, with a modulation frequency of 70Hz and an amplitude modulation parameter of 100%, has a roughness of 1asper.

[0068] In this embodiment, the roughness energy analysis is to perform energy distribution statistics on the roughness of the entire data segment. When the proportion of scattered points with large roughness energy exceeds the roughness energy judgment threshold, it is considered that there is a knock fault, such as Figure 7 and Fig. 9 As shown, if the target roughness energy in the roughness energy distribution does not exceed the roughness energy judgment threshold, it is determined that the engine has knocking noise; if the target roughness energy in the roughness energy distribution exceeds the roughness energy judgment threshold, it is determined that the engine does not have knocking noise. Optionally, the roughness energy judgment threshold is generally set to 0.5 asper.

[0069] S130. Control the manufacturing execution system to generate an abnormal noise detection result of the engine according to the result of whether the engine has abnormal howling noise or knocking noise determined by the industrial computer of the test bench. The abnormal noise detection result is used to display whether the engine has abnormal noise, and display the corresponding abnormal noise type when it is determined that the abnormal noise exists.

[0070] Specifically, the manufacturing execution system is controlled to generate an abnormal noise detection result of the engine as the engine has an abnormal howling noise based on the existence of the engine abnormal noise determined by the industrial computer of the test bench; the manufacturing execution system is controlled to generate an abnormal noise detection result of the engine as the engine has an abnormal knocking noise based on the existence of the engine abnormal noise determined by the industrial computer of the test bench; the manufacturing execution system is controlled to generate an abnormal noise detection result of the engine as the engine has an abnormal howling noise and the engine has an abnormal knocking noise based on the existence of the engine abnormal noise and the engine has an abnormal knocking noise determined by the industrial computer of the test bench.

[0071] In this embodiment, if the abnormal sound detection result of the engine is that the engine has a whistling abnormal sound and the engine has a knocking abnormal sound, both can be Figure 8 and Fig. 9 The display shows in real time that there is abnormal noise in the engine and the type of abnormal noise.

[0072] The technical solution of the embodiment of the present invention is as follows: during the off-line test of the engine, an engine test bench is used to collect engine noise data, and the engine noise data is fed back to the test bench industrial computer; the engine noise data is subjected to noise order analysis and vibration roughness analysis by the test bench industrial computer, and it is determined whether the engine has abnormal howling noise or abnormal knocking noise according to the analysis results of the noise order analysis and the vibration roughness analysis; the manufacturing execution system is controlled to generate an abnormal noise detection result of the engine according to the result of the test bench industrial computer determining whether the engine has abnormal howling noise or abnormal knocking noise, and the abnormal noise detection result is used to display whether the engine has abnormal noise, and display the corresponding abnormal noise type when it is determined that abnormal noise exists. The present invention performs energy statistics on engine vibration and noise signals, and uses the distribution statistics of engine noise signal order energy to confirm whether the engine has order noise; it uses the roughness energy distribution statistics of the engine vibration signal to confirm whether the engine has knocking noise, thereby analyzing whether the engine has abnormal noise and determining whether the test run offline conditions are met. It can realize real-time monitoring of howling and knocking abnormal noise faults, the accuracy rate of engine abnormal noise recognition can reach more than 95%, and can realize real-time early warning on the test bench.

[0073] Based on the same inventive concept, an embodiment of the present invention provides an engine production line, the engine production line includes the engine abnormal sound detection device of any embodiment of the present invention, and the engine production line can execute the engine abnormal sound detection method of any embodiment of the present invention.

[0074] The engine production line of the embodiment of the present invention includes an engine abnormal noise detection device, which includes an engine test bench, a test bench industrial computer and a manufacturing execution system; the engine test bench is used to collect engine noise data during the engine test run and feed the engine noise data back to the test bench industrial computer; the test bench industrial computer is used to perform noise order analysis and vibration roughness analysis on the engine noise data, and determine whether the engine has a whistling abnormal noise or a knocking abnormal noise according to the analysis results of the noise order analysis and the vibration roughness analysis; the manufacturing execution system is used to generate an engine abnormal noise detection result according to the result of the test bench industrial computer determining whether the engine has a whistling abnormal noise or a knocking abnormal noise, and the abnormal noise detection result is used to display whether the engine has an abnormal noise, and display the corresponding abnormal noise type when it is determined that the abnormal noise exists. The present invention solves the problem that the current engine abnormal noise fault cannot be effectively intercepted in the engine test run link and relies on inaccurate manual detection, and realizes real-time detection of engine abnormal noise during the engine test run, with high accuracy in engine abnormal noise recognition and cost saving.

[0075] The engine production line of the embodiment of the present invention can execute the engine abnormal noise detection method. During the engine test run, the engine test bench is used to collect engine noise data, and the engine noise data is fed back to the test bench industrial computer; the engine noise data is subjected to noise order analysis and vibration roughness analysis by the test bench industrial computer, and the engine is judged whether there is abnormal howling or knocking noise according to the analysis results of the noise order analysis and vibration roughness analysis; the control manufacturing execution system generates the engine abnormal noise detection result according to the result of whether there is abnormal howling or knocking noise determined by the test bench industrial computer, and the abnormal noise detection result is used to display whether there is abnormal noise in the engine, and the corresponding abnormal noise type is displayed when it is determined that there is abnormal noise. The present invention can monitor the abnormal noise faults of the howling and knocking types in real time based on the energy statistics of the abnormal noise algorithm of the howling and knocking types during the engine test run, and the recognition accuracy can reach more than 95%, and the bench can realize real-time early warning.

[0076] Based on the same inventive concept, in some embodiments, the engine abnormal noise detection method can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium. Various embodiments of the systems and techniques described above in this article can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include: being implemented in one or more computer programs, which may be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, which may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0077] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0078] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, device, or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0079] To provide interaction with a user, the systems and techniques described herein may be implemented on an engine production line having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and pointing device (e.g., a mouse or trackball) through which a user can provide input to the engine production line. Other types of devices may also be used to provide interaction with a user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0080] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0081] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0082] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0083] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An engine abnormal noise detection device, characterized in that: The engine abnormal noise detection equipment includes an engine test bench, a test bench industrial computer and a manufacturing execution system; The engine test bench is used to collect engine noise data during the engine test run, and feed the engine noise data back to the test bench industrial computer; The test bench industrial computer is used to perform noise order analysis and vibration roughness analysis on the engine noise data, and determine whether the engine has abnormal howling or knocking noise according to the analysis results of the noise order analysis and the vibration roughness analysis; The manufacturing execution system is used to generate an abnormal sound detection result of the engine based on the result of the test bench industrial computer determining whether the engine has an abnormal howling sound or a knocking sound. The abnormal sound detection result is used to display whether the engine has an abnormal sound, and display the corresponding abnormal sound type when it is determined that an abnormal sound exists.

2. The engine abnormal noise detection device according to claim 1, characterized in that: The engine test bench comprises a first noise sensor, a second noise sensor, a first vibration sensor, a second vibration sensor and a rotation speed sensor, wherein the first noise sensor, the second noise sensor, the first vibration sensor, the second vibration sensor and the rotation speed sensor are respectively arranged on the engine; The first noise sensor, the second noise sensor, the first vibration sensor, the second vibration sensor and the speed sensor are used to collect engine noise data during an engine test run, and the engine noise data includes noise data of the engine collected by the first noise sensor and the second noise sensor, vibration data of the engine collected by the first vibration sensor and the second vibration sensor, and speed data of the engine collected by the speed sensor.

3. The engine abnormal noise detection device according to claim 1, characterized in that: The test bench industrial computer is also used to store the engine noise data, the result of determining whether the engine has abnormal howling or knocking noise, and the engine attribute information of the engine in a corresponding manner.

4. The engine abnormal noise detection device according to claim 1, characterized in that: The manufacturing execution system is also used to display the abnormal sound detection result through an abnormal sound pop-up box.

5. An engine abnormal noise detection method, the engine abnormal noise detection method is applied to an engine abnormal noise detection device, the engine abnormal noise detection device includes an engine test bench, a test bench industrial computer and a manufacturing execution system, characterized in that: include: During the engine test run, the engine noise data is collected by using the engine test bench, and the engine noise data is fed back to the test bench industrial computer; Using the test bench industrial computer to perform noise order analysis and vibration roughness analysis on the engine noise data, and judging whether the engine has abnormal howling or knocking noise according to the analysis results of the noise order analysis and the vibration roughness analysis; The manufacturing execution system is controlled to generate an abnormal sound detection result of the engine according to the result of the test bench industrial computer determining whether the engine has an abnormal sound such as a howling sound or a knocking sound. The abnormal sound detection result is used to display whether the engine has an abnormal sound, and when it is determined that an abnormal sound exists, the corresponding abnormal sound type is displayed.

6. The engine abnormal noise detection method according to claim 5, characterized in that: The engine noise data is subjected to noise order analysis and vibration roughness analysis using the test bench industrial computer, including: The test bench industrial computer is used to collect statistics on the full-speed order energy distribution and the roughness energy distribution in the engine noise data, and noise order analysis and vibration roughness analysis are performed accordingly according to the full-speed order energy distribution and the roughness energy distribution.

7. The engine abnormal noise detection method according to claim 6, characterized in that: Determining whether the engine has abnormal howling or knocking noise according to the analysis results of the noise order analysis and the vibration roughness analysis includes: If the target order energy in the full-speed order energy distribution exceeds the order energy determination threshold, it is determined that the engine has abnormal howling sound; If the target energy in the full-speed order energy distribution does not exceed the order energy determination threshold, it is determined that the engine does not have abnormal howling sound; If the target roughness energy in the roughness energy distribution does not exceed the roughness energy determination threshold, it is determined that the engine has a knocking noise; If the target roughness energy in the roughness energy distribution exceeds the roughness energy determination threshold, it is determined that there is no knocking noise in the engine.

8. The engine abnormal noise detection method according to claim 6, characterized in that: Controlling the manufacturing execution system to generate an abnormal sound detection result of the engine according to the result of the test bench industrial computer determining whether the engine has abnormal howling sound or abnormal knocking sound, including: The manufacturing execution system is controlled to generate an abnormal sound detection result of the engine, that is, the engine has an abnormal howling sound and / or the engine has an abnormal knocking sound, according to the determination of the engine having an abnormal howling sound and / or the engine having an abnormal knocking sound by the test bench industrial computer.

9. An engine production line, characterized in that: The engine production line comprises the engine abnormal noise detection device according to any one of claims 1-4.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the engine abnormal noise detection method according to any one of claims 5 to 8 when executed.

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