Electromagnetic catapult aircraft bearing dynamic safety monitoring device and method

Abstract

The present application relates to heavy load bearing dynamic monitoring technical field, especially to a kind of electromagnetic catapult aircraft bearing dynamic safety monitoring device and method, by adopting the electromagnetic shielding probe of iron pie type, hang closely on heavy load bearing, setting vibration monitoring module obtains bearing vibration signal, using vibration electromechanical conversion component converts vibration mechanical energy into electric energy, simultaneously through high-speed signal collector and large capacity signal storage card, collect and temporarily store the vibration signal of one sliding cycle monitored, after aircraft take-off, the periodic vibration signal is quickly transmitted to ground controller.Full shielding type monitoring, periodic wireless data transmission, overcome external strong electromagnetic interference;Device utilizes its ultra-thin iron pie type modeling, hang closely on the bearing to be detected, so that it does not produce dynamic balance disorder, and cause additional wear of bearing;Vibration mechanical energy is converted into electric energy, without external power supply.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heavy load bearing dynamic monitoring, in particular to a dynamic safety monitoring device and method for electromagnetic catapult aircraft bearings. BACKGROUND

[0002] An aircraft carrier is the core of a modern navy, and is known as a sea steel overlord. How to make the aircraft carrier short distance take-off smoothly has always been an important problem. With the increasing powerful function and perfect performance of the aircraft, the weight of the aircraft is also increasing, and the demand for auxiliary equipment to take off from the aircraft carrier is also increasing. Therefore, powerful electromagnetic catapult technology gradually appears in everyone's field of vision.

[0003] Electromagnetic catapult is to push the armature to catapult the aircraft out of the runway through huge ampere force. The modern aircraft launched is dozens of tons, and the short distance take-off is heavy load and high speed. In such an extreme use environment, the bearing of the pulley is under great stress, which is easy to cause safety hazards. In order to ensure its safe and reliable operation, it is necessary to monitor the bearing online in real time. Due to the compact structure of the equipment, the space for setting up the monitoring device is small, and the power supply cannot be provided. Moreover, the huge instantaneous electromagnetic force between the tracks forms a strong magnetic field interference source, which interferes with the use of electronic equipment, and brings great challenges to the monitoring work.

[0004] Based on the above problems, the present application researches a dynamic safety monitoring device and method for electromagnetic catapult aircraft bearings on the basis of the prior art. SUMMARY

[0005] To solve the above problems, the present application provides a dynamic safety monitoring device for electromagnetic catapult aircraft bearings, which is implemented as follows:

[0006] A dynamic safety monitoring device for electromagnetic catapult aircraft bearings, comprising a shell, a single-chip microcomputer control module, a vibration monitoring module, a signal storage module and a wireless transmitting end arranged in the shell, the vibration monitoring module is connected with the signal storage module, the single-chip microcomputer control module is connected with the signal storage module and the wireless transmitting end respectively, the shell is in the shape of a frisbee and is hung on the heavy load bearing, and the shell is made of electromagnetic shielding material; the vibration monitoring module comprises a vibration conductor and a vibration sensor arranged in superposition, one side of the vibration conductor far from the vibration sensor is close to the heavy load bearing, and mechanically transmits the vibration generated by the heavy load bearing, the vibration sensor monitors the vibration signal of the aircraft in a taxi cycle in a closed mode; the signal storage module collects and temporarily stores the vibration signal of a taxi cycle monitored, and the single-chip microcomputer control system controls the wireless transmitting end to quickly transmit the periodic vibration signal to the ground controller after the aircraft takes off.

[0007] As a further improvement, the vibration sensor is provided with a vibration electromechanical conversion assembly, which is pressed against the vibration conductor and converts mechanical energy into electrical energy, and the electrical energy is stored in an electrical energy storage device for use by components of the monitoring device.

[0008] As a further improvement, the signal storage module includes a high-speed signal collector and a signal storage card.

[0009] As a further improvement, the shell is further provided with a strong electromagnetic shielding film on the outside.

[0010] The application also discloses a dynamic safety monitoring method for an electromagnetic catapult aircraft bearing, which uses any one of the dynamic safety monitoring devices to monitor the dynamic safety of the bearing, and comprises the following steps:

[0011] S1: electromechanical conversion: the monitoring device with an electromagnetic fully shielded iron pie shell is tightly attached to the heavy load bearing, and when the aircraft carrier starts to taxi, the vibration sensor picks up the vibration signal and converts the obtained mechanical vibration of the bearing into electrical energy through the electromechanical conversion assembly, and the converted electrical energy is stored in the electrical energy storage device for use by components of the monitoring device;

[0012] S2: fully shielded signal monitoring: the monitoring device with an electromagnetic fully shielded iron pie shell is used to monitor the vibration signal of the heavy load bearing when the aircraft carrier taxis under the drive of the electromagnetic catapult;

[0013] S3: high-speed signal collection and signal temporary storage: the process of the aircraft carrier taxiing from the start to taking off away from the strong magnetic field interference source is regarded as a monitoring period, and the vibration signal obtained in one monitoring period is collected by the high-speed signal collector and temporarily stored in the signal storage card inside the monitoring device;

[0014] S4: periodic wireless signal transmission: when the aircraft carrier taxis away from the track and away from the strong magnetic field interference source, the vibration signal of the current monitoring period stored in the signal storage card is sent to the data center of the ground controller through the wireless transmission end, and the signal is processed and analyzed by the data center, and the safety state of the controlled bearing is indirectly judged by monitoring whether there is abnormal vibration signal.

[0015] As a further improvement, in step S1, one side of the vibration conductor is tightly attached to the heavy load bearing, the vibration conductor receives and mechanically transmits the vibration generated by the heavy load bearing, and the vibration signal is monitored by the vibration sensor.

[0016] As a further improvement, in step S2, the picked-up vibration signal is amplified by a signal amplifier.

[0017] As a further improvement, the wireless transmitting end in step S4 transmits the same periodic monitoring signal at least three times, and after the data center receives the signal and confirms the data integrity, the monitoring signal in the signal storage card is cleaned up.

[0018] As a further improvement, the wireless transmitting end in step S4 transmits the same periodic monitoring signal at least three times, and after the data center receives the signal and confirms the data integrity, the monitoring signal in the signal storage card is cleaned up.

[0019] The first time: the time of periodic wireless signal transmission is set according to the preset electromagnetic catapult completion time of the aircraft, and the first signal transmission is performed when the preset time is reached.

[0020] The second time: the ground controller of the monitoring device is data-connected with the electromagnetic catapult control system, and when the aircraft slides off the track, the electromagnetic catapult control system feeds back the signal to the ground controller of the monitoring device, and then the ground controller feeds back the signal to the wireless transmitting end for the second signal transmission.

[0021] The third time: the distance range in which the ground controller can receive the signal transmitted by the monitoring device is set, the control module of the monitoring device directly receives the ranging positioning feedback of the aircraft, and the third signal transmission is performed within any distance range.

[0022] As a further improvement, the signal storage card can store at least two groups of data of different monitoring periods.

[0023] Compared with the prior art, the present application can obtain the following beneficial effects:

[0024] I. The ultra-thin shape of the iron pie probe is suitable for the bearing of the pulley, which can prevent the strong magnetic field interference of the electromagnetic catapult track and prevent the imbalance of the bearing from causing additional wear.

[0025] II. The vibration mechanical energy generated during the operation of the equipment is quickly and efficiently converted into electrical energy without external power supply, and the problem of narrow space for accommodating the monitoring device due to the compact structure of the bearing to be detected is overcome.

[0026] III. The vibration monitoring data in a catapult period is completely collected and temporarily stored through a high-speed signal collector and a large-capacity storage unit, and the collected vibration data is sent to the data center through a wireless way after the equipment completes a beat period of work, which overcomes the problem of data transmission under strong electromagnetic interference. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the examples of the present application or the prior art or the descriptions in the prior art, a brief introduction is made to the drawings which are needed to be used. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0028] Figure 1 The working flow chart of the dynamic safety monitoring method of the electromagnetic catapult aircraft bearing of the present application.

[0029] Figure 2 The working flow chart of the three times of signal transmission in S4.

[0030] Figure 3 The schematic diagram of the aircraft taxiing (the bearing has a large load).

[0031] Figure 4 The local enlarged schematic diagram of the heavy load bearing structure of the part to be inspected.

[0032] Figure 5 The local enlarged schematic diagram of the monitoring device in the use state.

[0033] Figures 6-8 The appearance schematic diagram of the monitoring device externally hung on the heavy load bearing.

[0034] Figure 9 The principle diagram of the dynamic safety monitoring device of the electromagnetic catapult aircraft bearing of the present application.

[0035] 10-monitoring device, 11-single-chip microcomputer control module, 12-vibration sensor, 13-vibration conductor, 14-signal storage module, 15-wireless transmitting end, 16-electromechanical conversion assembly, 17-signal amplifier, 18-A / D converter;

[0036] 20-aircraft, 21-heavy load bearing. DETAILED DESCRIPTION

[0037] In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0038] In the description of the present application, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can be explicitly or implicitly included one or more of the features.

[0039] To achieve the smooth take-off of the carrier-based aircraft, the lift obtained must be equal to or greater than the gravity of the aircraft, and the modern carrier-based aircraft is dozens of tons heavy, requiring a fast take-off speed, and to achieve the take-off of the carrier-based aircraft with large volume and heavy weight in a short distance, a strong thrust propeller is required, and the current ideal launch technology of the carrier-based aircraft is electromagnetic launching technology.

[0040] The electromagnetic launching is a new type of launching technology for driving the launched object and accelerating it to a super high speed by using the force of the magnetic field on the current conductor, and the carrier-based aircraft is launched out of the runway by the huge ampere force pushing the armature, the carrier-based aircraft slides on the track at a high speed, the harsh use environment of high speed and heavy load makes the bearing of the carrier-based aircraft pulley bear a huge stress, and there is a great safety hazard, therefore, the monitoring of the heavy load bearing is very important. Due to the particularity of the structure and the strong electromagnetic interference, the monitoring work has great challenges, based on this, the present application researches a kind of dynamic safety monitoring device for the electromagnetic launching carrier-based aircraft bearing, aiming at solving the above problems, and dynamically monitoring the heavy load bearing, providing protection for the safety of the aircraft flight.

[0041] A kind of dynamic safety monitoring device for the electromagnetic launching carrier-based aircraft bearing, for dynamically monitoring heavy load bearing 21, especially for monitoring the bearing of the carrier-based aircraft pulley in strong magnetic field environment. The monitoring device 10 includes a shell hung on the heavy load bearing, a single-chip microcomputer control module 11 is arranged in the shell, a vibration monitoring module, a signal storage module 14 and a wireless transmitting end 15, and the circuits between each module and component are connected. The design point of the present application is that the shell is in the shape of a thin iron disc and is made of electromagnetic shielding material, further, a strong electromagnetic shielding film can be arranged on the outside of the shell to form a multi-layer shielding, reduce the interference of external strong electromagnetic on monitoring, provide a relatively stable monitoring environment, and protect the internal components of the shell from damage caused by strong magnetic field. The shell is arranged in the shape of a super-thin iron disc and is tightly hung on the bearing, and vibrates synchronously with the bearing, the super-thin iron disc has small volume and is conformal to the bearing, so that it does not cause dynamic imbalance and additional wear of the bearing. A plurality of mounting grooves are arranged in the shell, for arranging the single-chip microcomputer control module 11, the vibration monitoring module, the signal storage module 17 and the wireless transmitting end 15 respectively, to realize the orderly arrangement of the internal components of the shell, stable structure, avoid the influence of shaking, slipping or displacement on the monitoring results in the process of high-speed following of the device.

[0042] The vibration monitoring module comprises a vibration conductor 13 and a vibration sensor 12 arranged in a superposition mode, the vibration conductor 13 is also in the form of a pie-shaped bearing conforming structure, one side of the vibration conductor 13 away from the vibration sensor 12 is tightly attached to the heavy load bearing 21, and surface contact is achieved between the vibration conductor 13 and the bearing, vibration signals are acquired through surface contact in a wide range, the vibration conductor 13 mechanically transmits the vibration generated by the heavy load bearing 21 to the vibration sensor 12, and the vibration sensor 12 acquires the vibration signals. The vibration sensor 12 completes the monitoring work in a shielded mode in the shell, and the vibration signals of one taxiing cycle of the carrier-based aircraft are monitored in a periodic mode. The signal storage module 14 collects and temporarily stores the vibration signals of one taxiing cycle monitored by the vibration sensor 12, and the single-chip microcomputer control module 11 controls the wireless transmitting end 15 to quickly transmit the periodic vibration signals to the ground controller after the carrier-based aircraft takes off and is far away from the strong magnetic interference.

[0043] Due to the compact structure of the bearing and high-speed rotation in use, it is not suitable to arrange an external power supply for the monitoring device. Based on this, the present application utilizes the vibration mechanical energy generated during the operation to quickly and efficiently convert into electrical energy, without external power supply. A vibration electromechanical conversion assembly 16 is arranged in the vibration sensor, the vibration electromechanical conversion assembly 16 abuts against the vibration conductor 13 and converts mechanical energy into electrical energy, the electrical energy is stored by an electric energy storage device for use of other components of the monitoring device. While solving the above problems, the vibration energy is recycled and reused, and energy saving and environmental protection are achieved.

[0044] Further, the signal storage module 14 comprises a high-speed signal collector and a signal storage card. Due to the fast speed and short time of the carrier-based aircraft ejection, the vibration frequency is relatively fast, and a high-speed signal collector needs to be used to collect the signals completely. Unlike real-time signal transmission, the device needs to store the vibration signals of one taxiing cycle, and needs to temporarily store multiple groups of data when necessary, and the vibration signals are relatively dense and the data volume is large. Therefore, in the embodiment, a large-capacity signal storage card is used, and the specific capacity is set according to the actual collection needs.

[0045] The present application also discloses a dynamic safety monitoring method for an electromagnetic catapult carrier aircraft bearing, which is used for monitoring the heavy load bearing in a strong magnetic field environment, especially for monitoring the bearing of the carrier aircraft pulley using electromagnetic catapult technology. Figure 1 , attached Figure 1 is a monitoring method flow chart, based on the principle of acoustic vibration, a super-thin pie-shaped monitoring device is designed to be hung on the bearing, full shielding monitoring is adopted, high-speed data collection and large-capacity storage units are used for collecting and temporarily storing the monitoring data of one beat cycle, after the carrier aircraft completes taxiing and takes off, the data is sent to the data center in a wireless mode, and the specific method steps are as follows:

[0046] S1: electromechanical conversion: the monitoring device with an electromagnetic full shielding iron pie shell is closely attached to the heavy load bearing, when the carrier-based aircraft starts to taxi, the vibration sensor picks up the vibration signal and converts the obtained bearing mechanical vibration into electrical energy through the electromechanical conversion component, and stores the converted electrical energy in the electrical energy storage for use by the components of the monitoring device.

[0047] S2: full shielding signal monitoring: the monitoring device with an electromagnetic full shielding iron pie shell is used to monitor the vibration signal of the heavy load bearing of the carrier-based aircraft when it is driven to taxi by the electromagnetic catapult; the monitoring device starts to monitor when the carrier-based aircraft starts to taxi, and completes the monitoring when the carrier-based aircraft leaves the track.

[0048] S3: high-speed signal acquisition and temporary storage: define the process of strong magnetic interference from the start of taxiing to leaving the track as a complete monitoring period, and collect and temporarily store the vibration signal obtained in one monitoring period in the signal storage card inside the monitoring device through the high-speed signal collector;

[0049] S4: periodic wireless signal transmission: when the carrier-based aircraft slides off the track and away from the strong magnetic field interference source, the entire vibration signal of the current monitoring period stored in the signal storage card is quickly sent to the data center of the ground controller through the wireless transmission end, and the signal is processed and analyzed by the data center, and the abnormal vibration signal of the monitored bearing is monitored to indirectly determine whether the controlled bearing is in a safe state.

[0050] Further, the wireless transmission end in step S4 transmits the same group of monitoring signals at least three times, as shown in the accompanying Figure 2 The time of three signal transmissions is:

[0051] First: according to the preset electromagnetic catapult completion time of the carrier-based aircraft, the time of periodic wireless signal transmission is set, and when the preset time is reached, it is determined that the carrier-based aircraft slides off the track, and the first signal transmission is performed;

[0052] Second: the ground controller of the monitoring device is connected with the electromagnetic catapult control system data, when the carrier-based aircraft slides off the track, the electromagnetic catapult control system feeds back the signal to the ground controller of the monitoring device, and then the ground controller feeds back the signal to the wireless transmission end, and the second signal transmission is performed;

[0053] Third: set the distance range that the ground controller can receive the signal transmitted by the monitoring device, the control module of the monitoring device directly receives the ranging positioning feedback by the carrier-based aircraft, and the third signal transmission is performed within any distance range.

[0054] The order of the three signal transmissions is not fixed in sequence, and the three signal transmissions are respectively performed according to specific take-off conditions. The integrity of the monitoring data reception is ensured, and when the data center receives the signal and confirms the data integrity, the monitoring signal in the signal storage card is cleaned up.

[0055] In the embodiment, in order to further ensure that no signal collected by any group is lost, the signal storage card can store at least two groups of data of different monitoring periods; the last group of data can be temporarily backed up.

[0056] Further improvement, in step S1, one side of the vibration conductor is tightly attached to the heavy load bearing, the vibration conductor receives and mechanically transmits the vibration generated by the heavy load bearing, and the vibration signal is monitored by the vibration sensor.

[0057] Further, in step S2, the picked up vibration signal is amplified by a signal amplifier 17, the amplified signal is converted by an A / D converter 18, and then stored in a signal storage card.

[0058] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A kind of dynamic safety monitoring device of electromagnetic catapult aircraft bearing, including shell, single-chip microcontroller control module is arranged in the shell, vibration monitoring module, signal storage module and wireless transmitting end, the vibration monitoring module is connected with signal storage module, the single-chip microcontroller control module is connected signal storage module and wireless transmitting end respectively;Its characterized in that The shell is in the shape of a discus and is hung on a heavy load bearing and is made of electromagnetic shielding material; the vibration monitoring module comprises a vibration conductor and a vibration sensor arranged in a stack, one side of the vibration conductor away from the vibration sensor is close to the heavy load bearing and mechanically transmits the vibration generated by the heavy load bearing, and the vibration sensor monitors the vibration signal of the carrier aircraft in a taxiing cycle in a closed mode; the signal storage module collects and temporarily stores the vibration signal of a taxiing cycle, and the single-chip microcomputer control module controls the wireless transmitting end to quickly transmit the periodic vibration signal to the ground controller after the carrier aircraft takes off.

2. A dynamic safety monitoring device for electromagnetic catapult aircraft bearings according to claim 1, characterized in that The vibration sensor further comprises a vibration electromechanical conversion assembly which is pressed against the vibration conductor and converts mechanical energy into electrical energy, and the electrical energy is stored in an electricity storage device for use by components of the monitoring device.

3. A dynamic safety monitoring device for an electromagnetic catapult aircraft bearing according to claim 2, characterized in that The signal storage module comprises a high-speed signal collector and a signal storage card.

4. A dynamic safety monitoring device for an electromagnetic catapult aircraft bearing according to claim 3, characterized in that The shell further comprises a strong electromagnetic shielding film.

5. A method for dynamic safety monitoring of an electromagnetic catapult aircraft bearing, using a dynamic safety monitoring device according to any one of claims 3 to 4, characterized in that The method comprises the following steps: S1: electromechanical conversion: the monitoring device with an electromagnetic fully shielded discus-shaped shell is close to the heavy load bearing, when the carrier aircraft starts taxiing, the vibration sensor picks up the vibration signal and converts the acquired mechanical vibration of the bearing into electrical energy through the vibration electromechanical conversion assembly, and the converted electrical energy is stored in the electricity storage device for use by components of the monitoring device; S2: fully shielded signal monitoring: the monitoring device with an electromagnetic fully shielded discus-shaped shell is used to monitor the vibration signal of the heavy load bearing when the carrier aircraft taxis under the drive of the electromagnetic catapult; S3: high-speed signal collection and temporary storage: the process from the start of taxiing to the take-off of the carrier aircraft away from the strong magnetic field interference source is regarded as a monitoring cycle, and the vibration signal acquired in one monitoring cycle is collected by the high-speed signal collector and temporarily stored in the signal storage card inside the monitoring device; S4: periodic wireless signal transmission: when the carrier aircraft taxis away from the track and is far away from the strong magnetic field interference source, the vibration signal of the current monitoring cycle stored in the signal storage card is quickly sent to the data center of the ground controller through the wireless transmitting end, and the data center processes and analyzes the signal, and indirectly determines whether the controlled bearing is in a safe state by monitoring whether there is an abnormal vibration signal.

6. A method of dynamic safety monitoring of an electromagnetic catapult aircraft bearing according to claim 5, characterized in that, In step S1, one side of the vibration conductor close to the heavy load bearing receives and mechanically transmits the vibration generated by the heavy load bearing, and the vibration sensor monitors the vibration signal.

7. A method of dynamic safety monitoring of an electromagnetic catapult aircraft bearing according to claim 5, characterized in that, In step S2, the picked-up vibration signal is amplified by a signal amplifier.

8. The method of claim 5, wherein the method further comprises: In step S4, the wireless transmitting end transmits the same periodic monitoring signal at least three times, and when the data center receives the signal and confirms the data integrity, the monitoring signal in the signal storage card is cleaned up.

9. A method of dynamic safety monitoring of an electromagnetic catapult aircraft bearing according to claim 8, characterized in that, The time of at least three signal transmissions is as follows: First time: the time of periodic wireless signal transmission is set according to the preset electromagnetic catapult completion time of the carrier aircraft, and when the preset time is reached, it is determined that the carrier aircraft taxis away from the track, and the first signal transmission is performed; Second time: the ground controller of the monitoring device is connected with the electromagnetic catapult control system, and the electromagnetic catapult control system feeds back the signal to the ground controller of the monitoring device when the carrier aircraft slides off the track, and then the ground controller feeds back the signal to the wireless transmitting end for the second time signal transmission; Third time: the ground controller can receive the distance range of the signal transmitted by the monitoring device, and the single-chip microcomputer control module of the monitoring device directly receives the ranging positioning feedback by the carrier aircraft, and the third time signal transmission is performed within any distance range.

10. The method of claim 8, wherein the method further comprises: The adopted signal storage card can store at least two groups of data of different monitoring periods.

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