A bearing runout detection method and system

Abstract

The application belongs to the technical field of measurement, and discloses a bearing deviation detection method and system, a regular polygon light path is arranged around the bearing, a preset interval is used as a deviation threshold reference, when the actual center of the bearing deviates more than the allowed value, the outer peripheral surface will block the light path, causing the light source device or the reflection device to generate an indication signal; the structure design realizes online detection in the running state of the equipment, the bearing state monitoring can be completed without shutdown, and the technical bottleneck that the traditional detection method depends on professional institutions and shutdown operation is solved; the closed loop characteristic of the regular polygon light path ensures full circumferential detection coverage, and the corresponding setting of the interval and the maximum allowed deviation distance establishes an intuitive fault determination standard; thereby, the center deviation of the large mechanical bearing can be monitored in real time, quickly and accurately.

Description

Technical Field

[0001] This application relates to the field of measurement technology, and more specifically, to a method and system for detecting bearing deviation. Background Technology

[0002] In industrial production, many large industrial equipment require large mechanical bearings to connect rotating parts and ensure their rotational stability. During actual operation, due to various factors such as contact friction, vibration transmission from other connected mechanical devices, and environmental vibrations, large mechanical bearings can experience cumulative random deviations in their center of rotation over time. When this deviation becomes excessive, the bearing needs to be replaced.

[0003] Because these large mechanical bearings are inconvenient to disassemble and require a long time to be adjusted after disassembly and reassembly, they are usually exposed at one end in the equipment (or a removable cover is provided so that one end of the large mechanical bearing can be exposed after the cover is removed) so that bearing inspection can be carried out without disassembling the bearing, such as the detection of the center deviation.

[0004] However, existing technologies for detecting the center deviation of such large mechanical bearings typically require the equipment to be shut down, the bearing to be in a static state, and then a specialized testing organization (such as a special equipment inspection institute or bearing manufacturer) to conduct on-site testing of the bearing's deviation using specialized equipment. This method is not only time-consuming, labor-intensive, and expensive for factories, but it can also easily delay the factory's production schedule.

[0005] Therefore, there is a need for a bearing deviation detection method and system that can monitor the center deviation of large mechanical bearings in real time, quickly and accurately. Summary of the Invention

[0006] The purpose of this application is to provide a bearing deviation detection method and system that can monitor the center deviation of large mechanical bearings in real time, quickly and accurately.

[0007] In a first aspect, this application provides a bearing deviation detection system, including a light source device and at least two reflecting devices. The light source device and all the reflecting devices are arranged in a regular polygon around the center of the bearing under test. The light source device is used to emit a laser beam, which is reflected by each of the reflecting devices in sequence and returns to the light source device, thereby forming a regular polygonal optical path. One end of the bearing under test extends into the inside of the regular polygonal optical path, and there is a gap between the outer circumferential surface of the bearing under test and the regular polygonal optical path. The gap is equal to the maximum allowable center deviation distance of the bearing under test. Both the light source device and the reflecting devices are able to emit an indication signal when there is no laser beam incident, to indicate that the center deviation of the bearing under test is too large.

[0008] Preferably, the reflecting device includes a first housing and a beam splitter, the first housing and the beam splitter forming a first inner cavity, in which a first MCU module, a first photoelectric sensor and a first indicating device are disposed, the first photoelectric sensor and the first indicating device being electrically connected to the first MCU module; the beam splitter is used to decompose the incident light beam into a reflected light beam and a transmitted light beam, the first photoelectric sensor is used to sense the transmitted light beam, and the first MCU module is used to control the first indicating device to emit an indicating signal when the first photoelectric sensor does not sense the transmitted light beam.

[0009] Preferably, the light source device includes a second housing, within which a second MCU module, a second photoelectric sensor, a second indicating device, and a laser are disposed. The second photoelectric sensor, the second indicating device, and the laser are all electrically connected to the second MCU module. The laser is used to emit a laser beam, the second photoelectric sensor is used to sense the laser beam reflected back by the reflecting device, and the second MCU module is used to control the second indicating device to issue an indicating signal when the second photoelectric sensor does not sense a laser beam.

[0010] Preferably, the second housing has a light-transmitting port for the laser beam emitted by the laser and the laser beam reflected back by the reflecting device to pass through.

[0011] Preferably, a light-shielding device is also provided inside the second housing, and the light-shielding device is electrically connected to the second MCU module; the light-shielding device is used to intermittently block the output end of the laser.

[0012] Preferably, the indication signal includes at least one of an acoustic signal, an optical signal, and a vibration signal.

[0013] Preferably, the bearing deviation detection system further includes two supports, the light source device and all the reflective devices are divided into two device groups, the two device groups are respectively set on the two supports, and the positions of the light source device and each of the reflective devices on the corresponding supports are adjustable to adapt to the detection requirements of bearings of different diameters.

[0014] Preferably, the bearing deviation detection system further includes a host computer, and the light source device and the reflector device are both communicatively connected to the host computer. The host computer is used to monitor the laser beam incident condition of the light source device and the reflector device to determine whether the center deviation of the tested bearing is too large, and to report the judgment result.

[0015] Secondly, this application provides a bearing misalignment detection method, applied to the host computer of the bearing misalignment detection system described above, comprising the following steps:

[0016] A1. Obtain the laser beam emission information of the light source device, and the laser beam incident information of the light source device and the reflection device;

[0017] A2. Based on the laser beam emission information and the laser beam incident information, determine whether there is an optical path blockage during the time period when laser emission occurs;

[0018] A3. If there is an optical path blockage during the laser emission period, the center deviation of the tested bearing is determined to be too large, and a corresponding judgment result report is generated.

[0019] Preferably, the laser beam incident information is a binary information sequence, wherein the value at each moment is 0 or 1, where 0 indicates no laser beam incident and 1 indicates laser beam incident.

[0020] Step A3 includes:

[0021] A301. If there is an optical path blockage during the period of laser emission, it is determined that the center deviation of the tested bearing is too large;

[0022] A302. Obtain the real-time rotational speed data of the bearing under test;

[0023] A303. Extract the laser beam incident information segments of the light source device and each of the reflection devices within the time period of laser emission, and splice them to form the information sequence to be tested;

[0024] A304. Extract reference information sequences corresponding to different center deviations that match the real-time rotational speed data from the reference database to obtain a reference information sequence set;

[0025] A305. Compare the information sequence to be tested with the reference information sequence in the reference information sequence set, and combine the center deviation corresponding to the reference information sequence in the reference information sequence set to determine the actual center deviation of the bearing under test;

[0026] A306. Generate a report containing the judgment result of whether the center deviation is too large and the judgment result of the actual center deviation.

[0027] Beneficial Effects: The bearing deviation detection method and system provided in this application utilizes a regular polygonal optical path arranged around the bearing and a preset interval as a deviation threshold reference. When the actual center deviation of the bearing exceeds the allowable value, its outer circumference will block the optical path, causing the light source or reflector to generate an indication signal. This structural design enables online detection during equipment operation, allowing bearing condition monitoring without stopping the machine, thus solving the technical bottleneck of traditional detection methods that rely on professional institutions and machine shutdown. The closed-loop characteristic of the regular polygonal optical path ensures full circumferential detection coverage, while the corresponding setting of the interval and the maximum allowable deviation distance establishes an intuitive fault judgment standard. Therefore, it is possible to monitor the center deviation of large mechanical bearings in real time, quickly, and accurately. Attached Figure Description

[0028] Figure 1 A schematic diagram of the first bearing deviation detection system provided in this application.

[0029] Figure 2 This is a schematic diagram of the second type of bearing deviation detection system provided in this application.

[0030] Figure 3 This is a schematic diagram of the reflective device.

[0031] Figure 4 This is a diagram showing the equipment connection of the reflector.

[0032] Figure 5 This is a schematic diagram of the light source device.

[0033] Figure 6 This is a diagram showing the equipment connections for the light source device.

[0034] Figure 7 This is a flowchart of a bearing deviation detection method provided in this application.

[0035] Labeling Explanation: 1. Light Source Device; 101. Second Housing; 102. Second MCU Module; 103. Second Photoelectric Sensor; 104. Second Indicating Device; 105. Laser; 106. Light Passage Port; 107. Light Shielding Device; 107a. Shielding Plate; 107b. Driving Device; 108. Second Battery; 109. Second Wireless Communication Module; 2. Reflecting Device; 201. First Housing; 202. Beam Splitter; 203. First MCU Module; 204. First Photoelectric Sensor; 205. First Indicating Device; 206. First Battery; 207. First Wireless Communication Module; 3. Bracket; 301. Base; 302. Column; 303. Telescopic Crossbar; 4. Host Computer; 90. Bearing Under Test; 91. Control Circuit Board. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0037] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] Please refer to Figures 1-6 A bearing deviation detection system according to some embodiments of this application includes a light source device 1 and at least two reflecting devices 2. The light source device 1 and all the reflecting devices 2 are arranged in a regular polygon around the center of the bearing 90 being tested. The light source device 1 is used to emit a laser beam, which is reflected sequentially by each reflecting device 2 and then returns to the light source device 1, thereby forming a regular polygonal optical path (e.g., ...). Figure 1 , Figure 2 The test bearing 90 is traversed by a dotted line (in the image), with one end of the bearing being tested extending into the inner side of the regular polygonal optical path. The outer circumference of the bearing being tested 90 is separated from the regular polygonal optical path by a gap equal to the maximum allowable center deviation distance of the bearing being tested 90. Both the light source device 1 and the reflector device 2 can emit an indication signal (or warning signal) when there is no laser beam incident, to indicate that the center deviation of the bearing being tested 90 is too large.

[0039] The bearing deviation detection system of this application achieves real-time monitoring of the bearing's center deviation through a specific optical layout. The regular polygonal optical path refers to a closed optical path formed by the laser beam emitted from the light source device 1 after being reflected sequentially by multiple reflecting devices 2, with its geometric center coinciding with the theoretical center of the bearing 90 under test. This optical path can be constructed by evenly distributing the reflecting devices 2 and the light source device 1 around the bearing, for example, using two reflecting devices 2 and the light source device 1 to form an equilateral triangular optical path, or three reflecting devices 2 and the light source device 1 to form a square optical path (e.g.,...). Figure 1 As shown), four reflecting devices 2 and light source device 1 form a regular pentagonal optical path, or five reflecting devices 2 and light source device 1 form a regular hexagonal optical path (as shown). Figure 2(as shown), but not limited to these, the angle of the reflecting surface of each reflecting device 2 is adjusted according to the specific optical path shape to ensure that the laser beam can be closed and transmitted back along the preset path.

[0040] The distance between the outer circumferential surface of the bearing under test 90 and the regular polygonal optical path is a reference value set according to the maximum allowable center deviation distance of the bearing. Specifically, this distance is equal to the maximum allowable radial displacement of the bearing. When the actual center deviation of the bearing exceeds this threshold, its outer circumferential surface will encroach on the optical path area, causing the laser beam to be blocked. For example, if the maximum allowable center deviation distance of a certain type of bearing is 2mm, then the distance between the regular polygonal optical path and the outer circumferential surface of the bearing is set to 2mm. This distance can be physically achieved by adjusting the relative positions of the reflecting device 2 and the light source device 1 with the bearing.

[0041] The core innovation of this technical solution lies in transforming the detection of bearing center deviation into the monitoring of optical path continuity. By setting a regular polygonal optical path around the bearing and using a preset interval as a deviation threshold, when the actual deviation of the bearing center exceeds the allowable value, its outer circumference will block the optical path, causing the light source device 1 or the reflector device 2 to generate an indication signal. This structural design enables online detection while the equipment is running, allowing bearing condition monitoring without stopping the machine, thus solving the technical bottlenecks of traditional detection methods that rely on specialized institutions and machine shutdown. The closed-loop characteristic of the regular polygonal optical path ensures full circumferential detection coverage, while the corresponding setting of the interval and the maximum allowable deviation distance establishes an intuitive fault judgment standard.

[0042] This technical solution solves the technical difficulties of traditional detection methods, which require equipment shutdown and reliance on specialized institutions. It achieves real-time monitoring during operation through optical continuity detection. The polygonal optical path structure ensures full circumferential detection coverage, the closed-loop transmission path of the laser beam improves the detection sensitivity for minute displacements, and the preset interval mechanical reference settings are directly linked to fault judgment criteria. Compared with existing technologies, this solution can complete the detection without disassembling the bearing, reduces the detection response time to the millisecond level, and can intuitively reflect the bearing status through indicator signals, significantly improving the operation and maintenance efficiency of large mechanical bearings.

[0043] In some implementations, see Figure 3 , Figure 4The reflecting device 2 includes a first housing 201 and a beam splitter 202, which form a first inner cavity. A first MCU module 203, a first photoelectric sensor 204, and a first indicating device 205 are disposed in the first inner cavity. The first photoelectric sensor 204 and the first indicating device 205 are both electrically connected to the first MCU module 203. The beam splitter 202 is used to decompose the incident light beam into a reflected light beam and a transmitted light beam. The first photoelectric sensor 204 is used to sense the transmitted light beam. The first MCU module 203 is used to control the first indicating device 205 to issue an indicating signal when the first photoelectric sensor 204 does not sense the transmitted light beam.

[0044] Among them, the beam splitter 202 refers to a beam-splitting element with specific optical characteristics, which can be implemented using structures such as a semi-transparent mirror, a prism, a diffraction grating, or a semi-transparent mirror (e.g., Figure 3 In this structure, the beam splitter 202 is a semi-transparent and semi-reflective mirror, which is introduced to simultaneously convert the incident beam into a reflected beam and a transmitted beam; the first photoelectric sensor 204 is a photoelectric detection device that can convert light signals into electrical signals, which can be implemented using a PIN photodiode, avalanche photodiode, or photomultiplier tube, etc., and is introduced to monitor the existence state of the transmitted beam in real time; the first MCU module 203 is a microcontroller unit with data processing and control functions, and is introduced to establish intelligent control logic between the photoelectric sensor and the indicating device; the first indicating device 205 is a warning component that can output an indicating signal, which can be implemented using an LED array, a buzzer, or a vibration motor, and is introduced to provide intuitive feedback on abnormal states.

[0045] Specifically, the beam splitter 202 decomposes the incident laser beam into a reflected beam and a transmitted beam. The reflected beam maintains the closed characteristic of the regular polygonal optical path, while the transmitted beam serves as an independent monitoring signal source. When the center of the bearing 90 under test deviates, its outer circumference may intrude into the inner side of the regular polygonal optical path, causing the laser beam path to be blocked. At this time, the absence of the transmitted beam will be promptly detected by the first photoelectric sensor 204. This signal change triggers the first indicator device 205 to issue an alert through the first MCU module 203, thereby achieving real-time monitoring of optical path obstruction. This dual-path monitoring mechanism shortens the detection delay through hardware-level signal processing, and the binary judgment logic based on the presence or absence of the optical signal reduces the accuracy requirements of the sensor.

[0046] Through the above scheme, this application, while maintaining the basic structure of the regular polygonal optical path, decomposes the incident beam into two parts, reflection and transmission, by means of beam splitter 202. By utilizing the independent monitoring mechanism of the transmission beam, even if the bearing deviates slightly, causing the path of the reflected beam to shift, the missing transmission beam can still be captured by the photoelectric sensor in real time. This effectively solves the problem of missed detection in traditional single-path detection because the reflected beam can still return, and significantly improves the real-time performance and accuracy of bearing center deviation detection.

[0047] In some implementations, see Figure 5 , Figure 6 The light source device 1 includes a second housing 101, within which a second MCU module 102, a second photoelectric sensor 103, a second indicator device 104, and a laser 105 are disposed. The second photoelectric sensor 103, the second indicator device 104, and the laser 105 are all electrically connected to the second MCU module 102. The laser 105 is used to emit a laser beam, the second photoelectric sensor 103 is used to sense the laser beam reflected back by the reflecting device 2, and the second MCU module 102 is used to control the second indicator device 104 to issue an indicator signal when the second photoelectric sensor 103 does not sense a laser beam.

[0048] The second housing 101 refers to the physical structure that supports the internal components. It can be made of rigid materials such as metal or engineering plastics, and its purpose is to provide a stable mounting base and protective environment for the laser 105, sensor, and control module. The second MCU module 102 refers to a microcontroller unit with data processing and control functions, and its purpose is to achieve integrated control of laser emission, signal acquisition, and indicating devices. The second photoelectric sensor 103 refers to a device that can convert light signals into electrical signals. It can be implemented using PIN photodiodes, avalanche photodiodes, or photomultiplier tubes, and its purpose is to monitor changes in laser intensity along the reflection path in real time. The second indicating device 104 refers to a warning component that can output indicating signals. It can be implemented using an LED array, a buzzer, or a vibration motor, and its purpose is to provide intuitive feedback on abnormal states.

[0049] Specifically, this technical solution involves a laser 105 continuously emitting a laser beam, which forms a closed optical path via a reflection device. When the tested bearing 90 deviates from its center, causing the optical path to be blocked, the second photoelectric sensor 103 will fail to detect the expected reflected signal. At this time, the second MCU module 102 identifies the signal loss state using a preset algorithm and immediately triggers the second indicator device 104 to output a warning signal. This closed-loop monitoring mechanism enables the light source device 1 to have autonomous diagnostic capabilities, allowing it to determine the optical path status without relying on external equipment. Simultaneously, the modular integrated design improves the system's response speed and reliability.

[0050] Through the above scheme, this application realizes the autonomous monitoring function of the reflected light path by the light source device 1. When the bearing center deviates, causing the light path to be blocked, the built-in sensor and control module can quickly trigger the indication signal without the need for external equipment intervention, significantly improving the real-time performance and independence of the detection system. This integrated design not only simplifies the overall system structure, but also reduces the impact of environmental interference on the detection results by reducing the signal transmission path, thereby improving the accuracy and stability of bearing deviation detection.

[0051] Furthermore, see Figure 5 The second housing 101 has a light-transmitting port 106, which is used for the laser beam emitted by the laser 105 and the laser beam reflected back by the reflecting device 2 to pass through.

[0052] The light-transmitting port 106 refers to the optical channel formed on the surface of the second housing 101, which can be implemented using different geometric opening structures such as circular through holes, rectangular windows, or annular slits. The purpose of introducing this technical feature is to construct a bidirectional transmission channel for the laser beam, ensuring that the initial laser beam penetrates the housing to form a complete optical path, and also ensuring that the return light signal can accurately return to the inside of the housing and be captured by the photoelectric sensor.

[0053] In some possible implementations, see Figure 5 , Figure 6 The second housing 101 is also provided with a light-shielding device 107, which is electrically connected to the second MCU module 102; the light-shielding device 107 is used to intermittently block the output end of the laser 105.

[0054] The light-shielding device 107 refers to a mechanical or optical component capable of periodically blocking the output optical path of the laser 105. It can be implemented using structures such as an electromagnetically driven metal grating, a rotary shutter, or a liquid crystal shutter. The second MCU module 102 controls the opening and closing of the light-shielding device 107 through a preset timing signal. The purpose of introducing the light-shielding device 107 is to periodically interrupt laser emission, preventing thermal drift of the reflector 2 due to continuous laser irradiation, and simultaneously reducing interference from ambient light on the photoelectric sensor.

[0055] For example Figure 5 In the process, the light-shielding device 107 includes a shielding plate 107a and a driving device 107b. The driving device 107b is used to drive the shielding plate 107a to reciprocate, so as to block or open the output end of the laser 105. The driving device 107b can be a piezoelectric ceramic device or other telescopic driving device.

[0056] By employing the above-mentioned scheme, this application reduces heat accumulation in the reflection device and extends the service life of the equipment by using the intermittent working mode of the light-shielding device 107, thereby ensuring the long-term stability of the center deviation detection, while avoiding frequent switching of the laser 105.

[0057] Specifically, the indication signal may include at least one of an acoustic signal, an optical signal, and a vibration signal. Correspondingly, the first indication device 205 and the second indication device 104 include at least one of a loudspeaker, a warning light, and a vibration motor.

[0058] The light source device 1 and the reflector device 2 can be connected to an external power source via wires, or they can be powered by a built-in battery. For example... Figure 4 and Figure 6 In the light source device 1, a second battery 108 is also included, which is used to power the electrical equipment of the light source device 1; the reflector device 2 is also included, a first battery 206 is used to power the electrical equipment of the reflector device 2.

[0059] In some preferred embodiments, see Figure 1 , Figure 2 The bearing deviation detection system also includes two supports 3. The light source device 1 and all the reflective devices 2 are divided into two device groups. The two device groups are respectively set on the two supports 3. The positions of the light source device 1 and each reflective device 2 on the corresponding support 3 are adjustable to meet the detection requirements of bearings 90 with different diameters.

[0060] Among them, bracket 3 refers to the mechanical support structure used to support the optical components of the detection system. It can be implemented using a rigid structure such as a welded metal profile frame or a cast integrated base, with the purpose of providing a stable mechanical reference. The device group refers to the assembly of the light source device 1 and the reflection device 2 modularly grouped according to the optical path closure requirements. It can be implemented using a linear adjustment structure of slide rail and slider or a combination of threaded adjustment rod and locking nut to achieve position adjustment, with the purpose of adjusting the geometric dimensions of the regular polygonal optical path through mechanical displacement. Position adjustment means that the installation position of the device group on bracket 3 can be adjusted along the radial direction of the bearing being tested (90°). It can be implemented using a dovetail groove slide rail structure or a linear guide rail with locking mechanism, with the purpose of ensuring the optical path closure accuracy while adapting to the detection requirements of bearings with different diameter specifications.

[0061] Specifically, this scheme uses two supports as mechanical support bases, dividing the light source device 1 and the reflector device 2 into two groups, each fixed to the support 3. When the diameter of the bearing under test changes, the position of the group on the support 3 is adjusted to maintain a preset distance between the side length of the regular polygonal optical path and the outer circumference of the bearing. This adjustment mechanism provides a stable mechanical reference for dynamic adjustment through the rigid structure of the support 3, preventing optical path jitter or offset errors caused by adjustment. The modular layout design allows the light source device 1 and the reflector device 2 to be adjusted as a whole, avoiding the complex operation of rearranging the entire optical path, reducing the investment in repetitive equipment for bearings of different specifications, and maintaining real-time detection capability.

[0062] As a preferred embodiment, refer to Figure 1 and Figure 2 The specific implementation of this application is as follows: The bracket 3 includes a base 301, a column 302, and at least one telescopic crossbar 303. The column 302 is fixed to the base 301 and extends vertically. The telescopic crossbar 303 is slidably mounted on the column 302, and its other end is connected to the light source device 1 or the reflector device 2. The telescopic crossbar 303 extends horizontally and can extend and retract axially. By adjusting the height and length of the telescopic crossbar 303, the position of the light source device 1 or the reflector device 2 can be flexibly adjusted.

[0063] Through the above scheme, this application achieves the adaptability of the detection system to bearings 90 with different diameters. By utilizing the rigid structure of the bracket 3 and the adjustable position design of the device assembly, the redundant equipment investment for bearings of different specifications is avoided while ensuring the optical path closure accuracy, thus reducing detection costs. The modular layout allows the light source device 1 and the reflection device 2 to be adjusted as a whole, maintaining real-time detection capability while reducing the time cost of optical path rearrangement and improving detection efficiency.

[0064] In some preferred embodiments, see Figure 1 , Figure 2 The bearing deviation detection system also includes a host computer 4. The light source device 1 and the reflector device 2 are all connected to the host computer 4. The host computer 4 is used to monitor the laser beam incident condition of the light source device 1 and the reflector device 2 to determine whether the center deviation of the tested bearing 90 is too large and to report the judgment result.

[0065] Among them, the host computer 4 refers to the central control unit with data processing and communication functions, which can be implemented using equipment such as industrial computers, programmable logic controllers (PLCs), or cloud servers. Communication connections can be based on wired interface RS485 protocol transmission, or on wireless communication modules using ZigBee or LoRa protocols. Generating a judgment result report refers to storing or transmitting the test results in a structured data format to the maintenance terminal, providing data support for subsequent decision-making.

[0066] Remote monitoring can be achieved through the centralized monitoring function of the host computer 4.

[0067] Specifically, a second wireless communication module 109 can be set in the light source device 1, and a first wireless communication module 207 can be set in the reflection device 2 for communication connection with the host computer 4.

[0068] The MCU module, wireless communication module, and indicator device of the light source device 1 and the reflector device 2 can be integrated into a control circuit board 91, such as... Figure 3 and Figure 5 As shown.

[0069] refer to Figure 7 This application provides a bearing misalignment detection method, applied to the host computer 4 of the bearing misalignment detection system described above, including the following steps:

[0070] A1. Obtain laser beam emission information from light source device 1, and laser beam incident information from light source device 1 and reflection device 2;

[0071] A2. Based on the laser beam emission information and laser beam incident information, determine whether there is any optical path blockage during the period of laser emission;

[0072] A3. If there is an optical path blockage during the laser emission period, the center deviation of the tested bearing 90 is determined to be too large, and a corresponding judgment result report is generated.

[0073] The core innovation of this embodiment lies in the timing matching analysis of laser beam emission and incident information by the host computer 4. This allows for precise identification of whether the optical path is blocked by the bearing, transforming the detection of bearing center deviation into dynamic monitoring of the optical path's on / off state. This achieves real-time, rapid, and accurate online detection during equipment operation, effectively avoiding production delays and resource consumption caused by equipment downtime. It also overcomes the technical bottleneck of traditional detection methods that rely on professional intervention and downtime operations. Specifically, this solution eliminates environmental interference based on a signal presence comparison mechanism, ensuring the detection sensitivity of minute displacements. Furthermore, by setting preset intervals and corresponding maximum allowable center deviation distances, an intuitive fault judgment standard is established, significantly improving the efficiency and reliability of large mechanical bearing maintenance.

[0074] Specifically, traditional bearing deviation detection systems can only obtain binary detection results by blocking the optical path signal when detecting center deviation, and cannot obtain the actual center deviation value. This makes it difficult to quantitatively assess the bearing wear condition, and thus makes it difficult to meet the needs of industrial equipment for predictive maintenance of bearing condition.

[0075] Therefore, in some implementations, the laser beam incident information is a binary information sequence, wherein the value at each moment is 0 or 1, where 0 indicates no laser beam incident and 1 indicates laser beam incident.

[0076] Step A3 includes:

[0077] A301. If there is an optical path blockage during the period of laser emission, the center deviation of the tested bearing 90 is determined to be too large.

[0078] A302. Obtain the real-time rotational speed data of the bearing under test 90;

[0079] A303. Extract the laser beam incident information segments (i.e., the segments in the laser beam incident information located within the laser emission time period) from the light source device 1 and each reflection device 2 during the laser emission time period, and splice them together to form the information sequence to be tested.

[0080] A304. Extract reference information sequences corresponding to different center deviations that match the real-time rotational speed data from the reference database to obtain a reference information sequence set;

[0081] A305. Compare the information sequence to be tested with the reference information sequence in the reference information sequence set, and combine the center deviation corresponding to the reference information sequence in the reference information sequence set to determine the actual center deviation of the tested bearing 90.

[0082] A306. Generate a report containing the judgment result of whether the center deviation is too large and the judgment result of the actual center deviation.

[0083] Among them, the real-time rotational speed data refers to the rotational speed parameters of the bearing under test 90 during the detection period, which can be acquired in real time by an encoder or Hall sensor; the information sequence to be tested is a binary time-series data matrix formed by integrating the laser beam incident information segments of the light source device 1 and each reflection device 2 during the laser emission period (i.e., the period when laser is emitted from the light source device 1), which reflects the periodic occlusion characteristics of the bearing under test 90 on the regular polygonal optical path during rotation; the reference database is a set of standard reference information sequences corresponding to different rotational speed conditions that are pre-stored, and each reference information sequence is associated with a corresponding center deviation value, which can be established through experimental calibration or simulation modeling; the sequence comparison process adopts the dynamic time warping algorithm or cross-correlation analysis method, and selects the center deviation corresponding to the reference sequence with the highest matching degree as the detection result by calculating the similarity index between the information sequence to be tested and each reference information sequence.

[0084] Specifically, this technical solution utilizes a dynamic matching mechanism between real-time speed data and a reference database to enable the detection system to adapt to precise detection requirements under varying speed conditions. The process of splicing the test information sequence integrates time-series data from multiple sensors to construct a feature map reflecting the bearing's eccentric motion trajectory. The establishment of the reference database pre-stores optical path blocking feature models under different eccentricity and speed coupling states, providing a mathematical basis for subsequent comparisons. The process of determining the actual eccentricity through sequence comparison essentially involves pattern recognition matching between real-time detection data and theoretical models to calculate the specific eccentricity value. The final generated composite judgment report retains the original over-limit warning function while adding quantifiable eccentricity indicators, providing a more complete decision-making basis for equipment maintenance strategies.

[0085] As a preferred embodiment, the solution of this application is implemented as follows: During equipment operation, the second photoelectric sensor 103 and each of the first photoelectric sensors 204 collect laser beam incident state data in real time, and the host computer 4 synchronously acquires the real-time bearing rotation speed data collected by the encoder. When an optical path blocking signal is detected within the laser emission time period, the system initiates a quantitative analysis process. First, the incident signals of each sensor in the corresponding time period are extracted according to the laser emission start and end time, and a two-dimensional matrix is ​​stitched together according to the sensor spatial arrangement order and timestamp to form a sequence of information to be tested. Subsequently, a set of reference information sequences matching the current rotation speed is retrieved from the reference database. This set of reference information sequences contains theoretical optical path blocking modes corresponding to different center deviations. The matching degree between the sequence to be tested and each reference sequence is calculated using a dynamic time warping algorithm, and the center deviation corresponding to the reference sequence with the highest matching degree is selected as the detection result. The final judgment result report includes a binary conclusion of whether the limit is exceeded and the actual detected center deviation value, which is transmitted to the equipment monitoring system via industrial Ethernet.

[0086] Through the above-described scheme, this application achieves a technological leap from binary optical path obstruction detection to quantized deviation analysis. This scheme, through a dynamic speed matching mechanism and a reference information sequence comparison method, overcomes the limitations of traditional single-threshold judgment methods, enabling the detection system to accurately obtain the actual center deviation value under varying equipment speed conditions, thereby providing data support for bearing wear trend analysis and predictive maintenance.

[0087] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A bearing runout detection system, characterized by, The application relates to a bearing centering device, which comprises a light source device (1) and at least two reflecting devices (2), wherein the light source device (1) and all the reflecting devices (2) are arranged in a regular polygon around the center of a measured bearing (90); the light source device (1) is used for emitting a laser beam, the laser beam is reflected by each reflecting device (2) in turn and then returns to the light source device (1), thereby forming a regular polygon light path, one end of the measured bearing (90) extends into the inside of the regular polygon light path, and the outer circumferential surface of the measured bearing (90) has a spacing with the regular polygon light path, the spacing is equal to the maximum allowable center deviation distance of the measured bearing (90); the light source device (1) and the reflecting device (2) can emit an indication signal when there is no laser beam incidence, to indicate that the center deviation of the measured bearing (90) is too large. The reflecting device (2) comprises a first shell (201) and a light splitting sheet (202), the first shell (201) and the light splitting sheet (202) enclose a first inner cavity, a first MCU module (203), a first photoelectric sensor (204) and a first indication device (205) are arranged in the first inner cavity, the first photoelectric sensor (204) and the first indication device (205) are electrically connected with the first MCU module (203); the light splitting sheet (202) is used for decomposing an incident light beam into a reflected light beam and a transmitted light beam, the first photoelectric sensor (204) is used for sensing the transmitted light beam, and the first MCU module (203) is used for controlling the first indication device (205) to emit an indication signal when the first photoelectric sensor (204) cannot sense the transmitted light beam. The light source device (1) comprises a second shell (101), a second MCU module (102), a second photoelectric sensor (103), a second indication device (104) and a laser (105) are arranged in the second shell (101), the second photoelectric sensor (103), the second indication device (104) and the laser (105) are electrically connected with the second MCU module (102); the laser (105) is used for emitting a laser beam, the second photoelectric sensor (103) is used for sensing the laser beam reflected by the reflecting device (2), and the second MCU module (102) is used for controlling the second indication device (104) to emit an indication signal when the second photoelectric sensor (103) cannot sense the laser beam.

2. The bearing runout detection system of claim 1, wherein A light passing opening (106) is arranged on the second shell (101), and the light passing opening (106) is used for allowing the laser beam emitted by the laser (105) and the laser beam reflected by the reflecting device (2) to pass through.

3. The bearing runout detection system of claim 1, wherein, An optical shielding device (107) is further arranged in the second shell (101), and the optical shielding device (107) is electrically connected with the second MCU module (102); the optical shielding device (107) is used for intermittently shielding the output end of the laser (105).

4. The bearing runout detection system of claim 1, wherein, The indication signal comprises at least one of an acoustic signal, a light signal and a vibration signal.

5. The bearing runout detection system of claim 1, wherein, Two supports (3) are further included, the light source device (1) and all the reflection devices (2) are divided into two device groups, the two device groups are arranged on the two supports (3) respectively, and the positions of the light source device (1) and each reflection device (2) on the corresponding support (3) are adjustable to adapt to the detection requirements of bearings (90) with different diameters.

6. The bearing runout detection system of any of claims 1-5, wherein, A host computer (4) is further included, the light source device (1) and the reflection device (2) are in communication connection with the host computer (4), the host computer (4) is used for monitoring the laser beam incidence of the light source device (1) and the reflection device (2) to determine whether the center offset of the measured bearing (90) is too large, and to report the determination result.

7. A method of detecting bearing runout, comprising: The host computer (4) applied to the bearing offset detection system of claim 6 comprises the following steps: A1. Obtain the laser beam emission information of the light source device (1), and the laser beam incidence information of the light source device (1) and the reflection device (2); A2. According to the laser beam emission information and the laser beam incidence information, it is judged whether there is an optical path blocking condition in the time period with laser emission; A3. If there is an optical path blocking condition in the time period with laser emission, it is determined that the center offset of the measured bearing (90) is too large, and a corresponding determination result report is generated.

8. The bearing runout detection method of claim 7, wherein The laser beam incidence information is a binary information sequence, wherein the value at each time is 0 or 1, 0 represents no laser beam incidence, and 1 represents laser beam incidence; Step A3 includes: A301. If there is an optical path blocking condition in the time period with laser emission, it is determined that the center offset of the measured bearing (90) is too large; A302. Obtain the real-time rotating speed data of the measured bearing (90); A303. Extract the laser beam incidence information segment of the light source device (1) and each reflection device (2) in the time period with laser emission, and splice to form a to-be-tested information sequence; A304. Extract the reference information sequence corresponding to different center offsets matched with the real-time rotating speed data from the reference database to obtain a reference information sequence set; A305. Compare the to-be-tested information sequence with the reference information sequence in the reference information sequence set, and determine the actual center offset of the measured bearing (90) in combination with the center offset corresponding to the reference information sequence in the reference information sequence set; A306. Generate a determination result report containing whether the center offset is too large and the actual center offset.

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