A vehicle engine fault detection apparatus, system and method

Abstract

The application provides a vehicle engine fault detection device, system and method. The device comprises a detection component and a transmission component. The detection component comprises a high-gradient magnetic field generating device and a coil. The coil is in a ring structure, and the high-gradient magnetic field generating device is also in a ring structure and is arranged around the coil. The transmission component comprises a signal processing component, a wireless transmission component and a power supply component. The signal processing component is connected with the coil, the wireless transmission component and the power supply component respectively, and the power supply component is connected with the wireless transmission component. The signal processing component processes the induction signal from the coil and sends the processed signal to the wireless transmission component. The application is used to solve the problem that engine fault information cannot be detected in real time. The wear condition of the engine can be obtained by analyzing the voltage signal generated by electromagnetic induction.

Description

Technical Field

[0001] This invention relates to the field of fault detection, and in particular to a vehicle engine fault detection device. Background Technology

[0002] Vehicle engines experience wear, corrosion, and deformation during prolonged operation. As a crucial component of a vehicle, engine malfunctions directly impact driving safety. Currently, most engine fault detection sensors lack real-time monitoring and analysis capabilities and are expensive and bulky. For example, patent number 202210187799.4 proposes using cylinder data to narrow down the fault-finding scope. However, this method cannot directly detect engine wear and corrosion, and the equipment and methods are complex.

[0003] Tiny particles generated during wear circulate within the mechanical system along with the oil. Under normal machine operation, the size of these wear particles typically remains at 10-20 μm. However, during abnormal wear, the particle size increases significantly, and the concentration of magnetic particles rises substantially. Detecting and analyzing wear particles in the oil can provide wear information for mechanical equipment, enabling condition monitoring and fault diagnosis. A key challenge is achieving high detection accuracy in both sensor design and fault analysis using this method. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a vehicle engine intelligent fault detection device, system and method to solve the problem that the prior art cannot monitor the particle concentration in oil in real time. It mainly relates to a detection device based on the principle of electromagnetic induction, which sets a gradient magnetic field and coil outside the pipeline.

[0005] This invention provides an intelligent fault detection device for vehicle engines, comprising:

[0006] A detection component, comprising a high gradient magnetic field generating device, a coil, and a fluid pipe, wherein the coil is sleeved outside the fluid pipe, and the high gradient magnetic field generating device is arranged around the coil;

[0007] A transmission component includes a signal processing component, a wireless transmission component, and a power supply component. The signal processing component is connected to the coil, the wireless transmission component, and the power supply component, respectively. The power supply component is connected to the wireless transmission component. The signal processing component processes the induced signal from the coil and sends the processed signal to the wireless transmission component.

[0008] In one embodiment of the present invention, the high gradient magnetic field generator produces a magnetic field with a high gradient magnetic field strength, which can cover the fluid pipe portion.

[0009] In one embodiment of the present invention, when magnetic particles pass through the fluid pipe, the magnetic particles enter the magnetic field with a high gradient magnetic field strength; when the magnetic particles move through the magnetic field, the magnetic flux changes rapidly, thereby generating an induced current related to the magnetic particles in the coil; when an induced current appears in the coil, the signal processing component receives the induced signal generated by the coil, and calculates the signal duration and voltage peak value of the induced current based on the gradient change value of the magnetic field and the flow velocity of the magnetic particles, thereby obtaining the concentration information and total amount information of the magnetic particles.

[0010] In one embodiment of the present invention, the signal processing component compares the collected concentration information and total amount information with a preset threshold, and if the threshold is exceeded, an alarm signal is sent to the wireless transmission module.

[0011] In one embodiment of the present invention, the wireless transmission component transmits the processed signal or the alarm signal to the outside of the device based on low-power communication technology.

[0012] In one embodiment of the present invention, the power supply component supplies power to the signal processing component and the wireless transmission component, respectively.

[0013] In one embodiment of the present invention, the fault detection device further includes a housing assembly, which includes a housing, bolts, and a cover plate. The housing has an internal cavity, in which the detection component, the transmission component, and the fluid conduit are disposed for protection and fixation of the detection component and the transmission component. The bolts are respectively disposed at both ends of the housing and are fixedly connected to both ends of the housing and the fluid conduit to fix the fluid conduit. The bolts are hollow and communicate with the flow channel inside the fluid conduit. The cover plate is disposed above the transmission component and is fixedly connected to the housing.

[0014] The present invention also provides a vehicle engine intelligent fault detection system, comprising:

[0015] The sensing module generates an induced current in the coil when magnetic particles pass through it by setting a high gradient magnetic field.

[0016] An analysis module that analyzes and processes the voltage information of the induced current;

[0017] A wireless transmission module that transmits the data processed by the analysis module to the outside via wireless transmission technology.

[0018] In one embodiment of the present invention, a power supply module is further included, which supplies power to the analysis module and the wireless transmission module respectively.

[0019] The present invention further provides a vehicle engine intelligent fault detection method, comprising:

[0020] S1: A high gradient static magnetic field is generated along the axial direction of the fluid pipe using a high gradient magnetic field generator;

[0021] S2: When magnetic particles pass through the fluid pipe, an induction signal is generated in the coil sleeved on the outer ring of the fluid pipe, and the induction signal is transmitted to the signal processing component;

[0022] S3: The signal processing component processes the sensing signal and compares the processed sensing signal with a preset voltage threshold. If the voltage threshold is exceeded, an alarm message is sent. The signal processing component outputs the processed sensing signal and the alarm message to the wireless transmission component.

[0023] S4: The wireless transmission component transmits the sensing signal and the alarm information to the computer backend for display via wireless communication technology.

[0024] This invention provides a vehicle engine intelligent fault detection device, system, and method that can detect wear particles in the fluid pipeline in real time, thereby detecting whether the engine is faulty, achieving the effect of real-time vehicle engine fault detection.

[0025] Furthermore, in the fault detection device of the present invention, a coil and a high gradient magnetic field generator are arranged on the outer ring of the fluid pipe. When magnetic particles pass through the fluid pipe, an induced current related to the passing magnetic particles is generated in the coil. The induced current is analyzed and processed to determine the concentration and total amount of the passing magnetic particles, thereby determining the wear condition of the engine. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 The diagram shown is a perspective view of a fault detection device according to one embodiment of the present invention.

[0028] Figure 2 The diagram shown is an exploded perspective view of a fault detection device according to one embodiment of the present invention.

[0029] Figure 3 The diagram shows a waveform of the magnetic field strength change generated by the high gradient magnetic field generator in one embodiment of the present invention.

[0030] Figure 4 The diagram shows a waveform of the voltage change in the coil when magnetic particles pass through a fluid pipe in one embodiment of the present invention.

[0031] Figure 5 The diagram shown is a schematic representation of the distance relationship between components when magnetic particles pass through a fluid pipe in one embodiment of the present invention.

[0032] Figure 6 The diagram shown is an architecture diagram of a fault detection system according to one embodiment of the present invention.

[0033] Figure 7 The diagram shown is a flowchart of a fault detection method according to one embodiment of the present invention.

[0034] Component designation explanation:

[0035] The system includes: a detection component 10, a high gradient magnetic field generating device 11, a coil 12, a fluid pipe 30; a transmission component 20, a signal processing component 21, a wireless transmission component 22, a power supply component 23, magnetic particles 31, oil 32, a housing component 40, a housing 41, bolts 42, and a cover plate 43. Detailed Implementation

[0036] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0037] It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. It should also be understood that the terminology used in the embodiments of this invention is for describing specific implementations and not for limiting the scope of protection of this invention. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or as recommended by the respective manufacturers.

[0038] Please see Figures 1 to 7It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0039] This invention provides a vehicle engine intelligent fault detection device, system, and method for real-time detection of engine malfunctions. Specifically, as shown... Figure 1 As shown, the intelligent vehicle engine detection device of the present invention includes: a detection component 10, which includes a high gradient magnetic field generating device 11, a coil 12, and a fluid pipe 30. The coil 12 has a ring structure, and the high gradient magnetic field generating device 11 has a ring structure and is arranged around the coil 12; a transmission component 20, which includes a signal processing component 21, a wireless transmission component 22, and a power supply component 23. The signal processing component 21 is connected to the coil 12, the wireless transmission component 22, and the power supply component 23, respectively. The power supply component 23 is connected to the wireless transmission component 23. The signal processing component 21 processes the induced signal from the coil and sends the processed signal to the wireless transmission component 22.

[0040] like Figure 2As shown, the device also includes a housing assembly 40. The housing assembly 40 includes a housing 41, bolts 42, and a cover plate 43. The housing 41 is a hollow cylindrical structure with a certain thickness, and a square opening is provided at the top of the housing 41. Bolts 42 are respectively located at both ends of the housing 41, and are fixedly connected to the housing 41. The end of the bolt 42 away from the housing 41 has a threaded structure. When the external pipe material is ferromagnetic, it can be connected in series with the external pipe through the threaded structure of the bolt 42. A through hole is provided in the middle of the bolt 42. A detection assembly 10 and a transmission assembly 20 are housed inside the cavity of the housing 41. Both the detection assembly 10 and the transmission assembly 20 are encapsulated in the housing assembly 40, and the encapsulation methods include, but are not limited to, bolt connection and adhesive bonding. The fluid pipe 30 is a hollow cylindrical structure with a certain thickness, and both ends are fixedly connected to the bolts 42. The internal flow channel of the fluid pipe 30 communicates with the through hole of the bolt 42, allowing fluid to flow from one bolt 42 to the other through the fluid pipe 30. A coil 12 is fitted around the outside of the fluid pipe 30, and a high-gradient magnetic field generator 11 is fitted onto the coil 12. The high-gradient magnetic field generator 11 generates a magnetic field with a high gradient magnetic field strength that covers the fluid pipe 30, and the magnetic field gradient changes along the direction of the fluid pipe 30; the high-gradient magnetic field is a magnetic field with a rapidly changing magnetic flux density. A transmission component 20 is provided at the square opening at the top of the housing 32. A signal processing component 21, a wireless transmission component 22, and a power supply component 23 are mounted on a PCB circuit board (printed circuit board), and transmit signals and provide power through the PCB circuit board. The coil 12 is soldered to the PCB board, and the induced signal in the coil 12 can be transmitted to the signal processing component 21. A cover plate 43 is placed over the square opening at the top of the housing 41, and the cover plate 43 is fixedly connected to the housing 41.

[0041] like Figure 3 The diagram shows the waveform of the high gradient magnetic field strength generated by the high gradient magnetic field generator 11 as a function of distance in one embodiment of the present invention. The horizontal axis represents the distance along the fluid pipe 30, and the vertical axis represents the magnetic flux density at that distance. It can be seen that the magnetic flux density first slowly increases to 0.015T between 0.02m and 0.03m, then rapidly decreases to -0.085T, then rapidly increases back to 0.015T, and finally slowly decreases to 0T, achieving the effect of a high gradient magnetic field strength.

[0042] like Figure 4As shown, fluid pipe 30 contains oil (32) used for lubricating the engine and magnetic particles 31 generated by engine wear. Normally, the oil does not cause wear or generate magnetic particles when passing through the vehicle engine. However, when the vehicle engine malfunctions, wear occurs, and the small magnetic particles generated by the engine wear leave the engine with the oil and are output through the pipe. Magnetic particles 31 refer to magnetic particles that are affected by a magnetic field, not particles that can generate a magnetic field. In this embodiment, magnetic particles 31 are ferromagnetic metal particles. When oil 32 passes through fluid pipe 30, the magnetic particles 31 are carried by the oil 32 at a fixed speed (v) through the high-gradient magnetic field generated by the high-gradient magnetic field generator 11. As the magnetic particles 31 pass through the magnetic field, the magnetic flux density changes along the direction of the fluid pipe, causing a rapid change in the magnetic flux passing through the magnetic particles 31. Simultaneously, an induced current related to the magnetic particles 31 is generated in coil 12. The relevant information of the magnetic particles 31 can be determined based on the peak-to-peak voltage and duration of the induced current.

[0043] Furthermore, the width of the high gradient magnetic field generator is h, and the radius of the fluid pipe 30 is... , The relative permeability of magnetic particle 31. The coil has 12 turns. The coil is 12 half-length. The fluid pipe is 30mm long. The radius of the coil is 12. For magnetic particles, volume 31 The magnetic field strength generated by the high gradient magnetic field generator. For the velocity of magnetic particles, For displacement-related quantities, , The expression for the induced voltage can be obtained as follows:

[0044]

[0045] In this formula, all parameters except the induced voltage u and the volume V of the magnetic particle 12 are constants and can be preset into the signal processing component 21. Furthermore, the voltage of the induced current is a known quantity generated by the coil 12. Therefore, the volume of the magnetic particle 12 can be calculated and analyzed based on this formula and the voltage fluctuation image in the coil 12. Two warning methods are also provided: warning for large magnetic particle volume and warning for high magnetic particle volume concentration.

[0046] Large magnetic particle volume warning: According to the above formula, in actual working conditions, when the relevant parameters of the sensor and lubrication system are determined, the peak-to-peak value of the induced voltage is proportional to the volume of the magnetic particles. .in The constant can be obtained using the formula above. Peak voltage This is the minimum voltage value. This represents the peak-to-peak voltage. If some parameters in the above formula are unclear, such as the magnetic field strength being difficult or inaccurate to measure, they can be obtained by calibrating the sensor using a magnetic particle 12 of known volume. In actual signal processing, the volume of magnetic particles can be estimated from the peak-to-peak value of the induced signal. When a large volume appears, that is When this occurs, signal processing component 21 will issue an alarm. Threshold It is a constant that can be obtained from practical engineering experience or engine wear experiments.

[0047] High magnetic particle volume concentration warning: The magnetic particle volume concentration is the percentage of the volume of magnetic particles (31) to the volume of oil (32). ,in The volume of the magnetic particles. This represents the volume of the oil.

[0048] The concentration of magnetic particles per unit time is the ratio of volume concentration to time. ,in Let be the concentration of magnetic particles per unit time, c be the volume concentration, and T be time. Assume a certain time... The number of magnetic particles passing through is , No. The volume of each magnetic particle can be calculated using the above formula. So time Inside, the total volume of the magnetic particles is The volume of the magnetic particles per unit time is: .

[0049] The volume of oil per unit time can be estimated by the flow rate. In a specific lubrication system, this value is constant and is denoted as . The concentration of magnetic particles per unit time can be expressed as: A warning is issued when a large unit concentration is detected. threshold It is a constant that can be obtained from practical engineering experience or engine wear experiments.

[0050] like Figure 5 The diagram shown is a waveform of the voltage signal generated in the coil 12 when the magnetic particle 31 passes through the fluid pipe 30 in one embodiment of the present invention. The horizontal axis represents time, and the vertical axis represents voltage intensity. The peak-to-peak value of the voltage signal is calculated as the difference between the peak and trough values. The volume of magnetic particles 31 can be estimated using the peak-to-peak value. Simultaneously, the volume concentration of magnetic particles 31 can be estimated based on the duration and peak value of the voltage signal.

[0051] like Figure 6 As shown, this invention also provides an intelligent fault detection system for vehicle engines, comprising: a sensing module, which induces a current in a coil when magnetic particles pass through the sensing module by setting a high-gradient magnetic field; an analysis module, which analyzes and processes the voltage information of the induced current; and a wireless transmission module, which transmits the data processed by the analysis module to an external device via wireless transmission technology. The fault detection system also includes a power supply module, which supplies power to both the analysis module and the wireless transmission module.

[0052] The sensing module corresponds to the detection component 10, which includes a high-gradient magnetic field generator, a coil, and a fluid pipe. When a magnetic particle passes through the fluid pipe covered by the high-gradient magnetic field generated by the high-gradient magnetic field generator, an induced current related to the passing magnetic particle is generated in the coil. The analysis module corresponds to the signal processing component 21, which amplifies and collects the obtained induced current and analyzes it according to a preset algorithm. If the result of the analysis exceeds a preset threshold, an alarm message and a voltage signal of the induced current are sent to the wireless transmission module (i.e., the wireless transmission component 22). After receiving the alarm signal and the voltage signal, the wireless transmission module wirelessly transmits the signal to the computer backend for display via Zigbee (Advanced Information Relationship Protocol) communication technology.

[0053] like Figure 7 As shown, this invention proposes an intelligent fault detection method for vehicle engines, characterized by comprising: S1: using a high-gradient magnetic field generator 11 to generate a high-gradient static magnetic field along the axial direction of a fluid pipe 30; S2: when magnetic particles 31 pass through the fluid pipe 30, an induction signal is generated in a coil 12 fitted around the outer ring of the fluid pipe 30, and the coil 12 transmits the induction signal to a signal processing component 21; S3: the signal processing component 21 processes the induction signal and compares the processed induction signal with a preset voltage threshold. If the voltage threshold is exceeded, an alarm message is sent, and the signal processing component 21 outputs the processed induction signal and the alarm message to a wireless transmission component 22; S4: the wireless transmission component 22 transmits the induction signal and the alarm message to a computer backend for display via wireless communication technology.

[0054] The present invention provides a vehicle engine fault detection device that utilizes the principle of electromagnetic induction. It arranges a high gradient magnetic field generator that varies along the direction of motion and sets up a coil so that magnetic particles generate an induced current in the coil when passing through the high gradient magnetic field. The induced current is then analyzed to obtain relevant information about the magnetic particles, thereby determining the wear condition of the engine.

[0055] This invention differs from traditional sampling detection methods. It can detect the fluid in the pipeline in real time. Based on the peak-to-peak voltage and current duration of the induced current, the volume and concentration of magnetic particles can be calculated. At the same time, a threshold is set, and when the threshold is exceeded, the signal processing component will issue an alarm, thereby achieving the effect of intelligent fault detection.

[0056] Therefore, the intelligent fault detection device, system and method for vehicle engines of the present invention can solve the problem of not being able to detect vehicle engine faults in real time.

[0057] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A vehicle engine intelligent fault detection device, characterized in that, include: The detection component (10) includes a high gradient magnetic field generator (11), a coil (12) and a fluid pipe (30). The coil (12) is sleeved outside the fluid pipe (30), and the high gradient magnetic field generator (11) is arranged around the coil (12). The transmission component (20) includes a signal processing component (21), a wireless transmission component (22), and a power supply component (23). The signal processing component (21) is electrically connected to the coil (12), the wireless transmission component (22), and the power supply component (23), respectively. The power supply component (23) is electrically connected to the wireless transmission component (22). The signal processing component (21) processes the induced signal from the coil and sends the processed signal to the wireless transmission component (22). When the magnetic particles (31) pass through the fluid pipe (30), the magnetic particles (31) enter the magnetic field with a high gradient magnetic field strength; when the magnetic particles (31) move through the magnetic field, the magnetic flux changes rapidly, thereby generating an induced current related to the magnetic particles (31) in the coil (12); when an induced current appears in the coil (12), the signal processing component (21) receives the induced signal generated by the coil (12), and calculates the signal duration and voltage peak of the induced current based on the gradient change value of the magnetic field and the flow velocity of the magnetic particles (31), so as to obtain the concentration information and total amount information of the magnetic particles (31); The volume and concentration information of magnetic particles (31) can be calculated based on the peak-to-peak value of the induced current and the duration of the current. The peak-to-peak value of the induced voltage is proportional to the volume of magnetic particles (31). The volume concentration of magnetic particles (31) is the percentage of the volume of magnetic particles (31) to the volume of oil. The concentration of magnetic particles (31) per unit time is the ratio of volume concentration to time. The signal processing component (21) compares the collected concentration information and total amount information with a preset threshold. If the threshold is exceeded, an alarm signal is sent to the wireless transmission component (22).

2. The intelligent fault detection device for vehicle engines according to claim 1, characterized in that, The high gradient magnetic field generator (11) generates a magnetic field with a high gradient magnetic field strength, which can cover part of the fluid pipe (30).

3. The intelligent fault detection device for vehicle engines according to claim 1, characterized in that, The wireless transmission component (22) transmits the processed signal or the alarm signal to the outside of the device based on low-power communication technology.

4. The intelligent fault detection device for vehicle engines according to claim 1, characterized in that, The power supply component (23) supplies power to the signal processing component (21) and the wireless transmission component (22), respectively.

5. The intelligent fault detection device for vehicle engines according to claim 1, characterized in that, The fault detection device further includes a housing assembly (40), which includes a housing (41), bolts (42), and a cover plate (43). The housing (41) has an internal cavity, in which the detection assembly (10), the transmission assembly (20), and the fluid pipe (30) are disposed for protection and fixation of the detection assembly (10) and the transmission assembly (20). The bolts (42) are respectively disposed at both ends of the housing (41), and the bolts (42) are respectively fixedly connected to both ends of the housing (41) and the fluid pipe (30) to fix the fluid pipe (30). The bolts (42) are hollow and communicate with the flow channel inside the fluid pipe (30). The cover plate (43) is placed on top of the transmission assembly (20) and is fixedly connected to the housing (41).

6. A vehicle engine intelligent fault detection system, characterized in that, The system includes the intelligent fault detection device for vehicle engines as described in any one of claims 1 to 5, wherein the system comprises: The sensing module generates an induced current in the coil when magnetic particles pass through it by setting a high gradient magnetic field. An analysis module that analyzes and processes the voltage information of the induced current; A wireless transmission module that transmits the data processed by the analysis module to the outside via wireless transmission technology.

7. The intelligent fault detection system for vehicle engines according to claim 6, characterized in that, It includes a power module, which supplies power to the analysis module and the wireless transmission module respectively.

8. A method for intelligent fault detection of a vehicle engine, characterized in that, The method of using the intelligent fault detection device for vehicle engines as described in any one of claims 1 to 5 includes: S1: A high gradient static magnetic field is generated along the axial direction of the fluid pipe (30) using a high gradient magnetic field generator (11); S2: When magnetic particles (31) pass through the fluid pipe (30), an induction signal is generated in the coil (12) sleeved on the outer ring of the fluid pipe (30), and the coil (12) transmits the induction signal to the signal processing component (21). S3: The signal processing component (21) processes the sensing signal and compares the processed sensing signal with a preset voltage threshold. If the voltage threshold is exceeded, an alarm message is sent. The signal processing component (21) outputs the processed sensing signal and the alarm message to the wireless transmission component (22). S4: The wireless transmission component (22) transmits the sensing signal and the alarm information to the computer backend for display via wireless communication technology.

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