Tire burst prediction and alarm system

Abstract

The invention discloses a tire burst prediction and alarm system, and belongs to the technical field of automobile tire detection, the tire burst prediction and alarm system comprises a frame, a plurality of tires are installed on the frame, a vibration sensor and a rotary encoder are installed on a rotating shaft of each tire, each tire is provided with a hub and a bearing, and the hub and the bearing are arranged on the frame. A central processing device, a display device and a warning indicator are arranged in a control room area of the frame, the central processing device receives, processes and compiles signals of the tires and the rotary encoder, the received and processed signals are displayed at the display device, and an alarm signal is triggered at the warning indicator. When the tire has a blasting risk and is not exposed, enough time can be reserved for handling the possible blasting condition of the tire, so that the safety of tire blasting early warning is ensured, and the practical effect of early warning is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of automobile tire detection, and more specifically to a tire explosion prediction and alarm system. Background Art

[0002] During the production process, tires may have uneven characteristics due to materials, tools or structures. Regardless of whether they are loaded or not, tires with excellent uniformity will produce a certain vibration amplitude when rotating at high speed. Therefore, when the vehicle is running at high speed, the tires and the shafts on which they are mounted will vibrate due to the imbalance and non-uniformity of the tires themselves. Especially when a tire fails, due to changes in the internal structure of the tire, this vibration will become abnormally violent and have changes in amplitude or frequency compared to normal tires. By continuously monitoring the force fluctuations and / or vibration signals of the tires during operation and comparing the changes in the current tire signals with those of normal tires, the difference in signals can be effectively monitored, and the difference can be compared with the set alarm limit to predict tire failures or even explosions in advance.

[0003] In tire testing, it is often used for auxiliary testing of vehicles or tire testing machines. At present, the most widely used is to monitor the tire pressure. When a drastic change in tire pressure is found, it can be identified as a burst warning. Alternatively, by continuously detecting the tire surface temperature, it is judged that the tire is about to burst when the tire temperature reaches a certain set temperature value. The tire burst warning is given by detecting the drastic change in the tire profile.

[0004] However, this monitoring method still has certain defects:

[0005] For air pressure monitoring technology, when there is a violent fluctuation or loss of pressure, the tire may have exploded, and the warning at this time cannot interrupt or stop the tire explosion. At the same time, the tire explosion warning is based on the change of the tire contour. When the tire contour changes sharply, it means that the tire has entered the state of explosion. In this case, even if it can be stopped in time, it will usually explode and will not play the role of warning.

[0006] Therefore, in view of this, the existing structure is studied and improved, and a tire explosion prediction and alarm system is provided, in order to achieve a more practical purpose. Summary of the invention

[0007] 1. Technical problems to be solved

[0008] In view of the problems existing in the prior art, the purpose of the present invention is to provide a tire explosion prediction and alarm system, which can retain sufficient time to deal with possible tire explosion situations when there is a risk of tire explosion but no explosion occurs, thereby ensuring the safety of tire explosion warning and ensuring the practical effectiveness of the warning.

[0009] 2. Technical solution

[0010] To solve the above problems, the present invention adopts the following technical solutions.

[0011] A tire explosion prediction and alarm system comprises a frame, a plurality of tires are mounted on the frame, a vibration sensor and a rotary encoder are mounted on the rotating shaft of the tire, the vibration sensor receives and compiles a vibration-related signal of the tire, and the rotary encoder receives and compiles a rotation speed-related signal of the tire;

[0012] A wheel hub and a bearing are installed on each tire, the wheel hub, the bearing and the tire are connected as a whole, and the central axes of the three are colinear, and the tire, the wheel hub and the frame are kept rotating through the bearing;

[0013] The control room area of ​​the frame is provided with a central processing device, a display device and a warning indicator, the central processing device receives and processes the signals of the compiled tire and the rotary encoder, displays the received and processed signals at the display device, and triggers an alarm signal at the warning indicator;

[0014] Further, the central processing device performs a fast Fourier transform on the average vibration signal recorded by the vibration sensor at a selected time interval when processing the signal to create a harmonic spectrum of the selected tire;

[0015] The central processing unit includes any one of a computer, a vehicle system or a CPU processor.

[0016] Further, the warning indicator includes a buzzer and a flashing light;

[0017] The display device is any one of a display screen, a display panel, and an indicator.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] ① This solution monitors the relationship signal between the vibration amplitude and time of the selected tire, performs fast Fourier transform on the average vibration signal within the selected time interval to create the harmonic spectrum of the selected tire, removes the harmonic spectrum of the selected tire by applying a coherence function to minimize the impact of all other vibration sources on the harmonic spectrum of the selected tire, compares the latest spectrum with the stored value of the standard spectrum of the selected tire to track the changes in the amplitude of each harmonic, and determines whether the selected tire is about to fail locally by analyzing the changes in the harmonic amplitude and comparing it with the predetermined failure standard. In this way, when the tire is at risk of explosion but has not been exposed, sufficient time can be reserved to deal with the possible explosion of the tire, thereby ensuring the safety of tire explosion warning;

[0021] ② This solution monitors or detects the force fluctuation and vibration signal during the operation of the tire in real time, removes interference signals other than the tested tire through the dynamic force analysis system, processes the tested signal to obtain frequency domain harmonics, and determines and issues an early warning of tire explosion through the amplitude change of the frequency domain harmonics. In this way, it can effectively avoid issuing an early warning only when the explosion occurs, and after the early warning, it can ensure that the relevant personnel can deal with it in time or stay away from the risks that may be caused by the explosion, thereby ensuring the practical effect of the early warning;

[0022] ③ In this solution, during the tire development process, through the application of this technology, tire testing can be stopped in time before the tire explodes, and changes in the internal structure of the tire can be detected through methods such as X-rays or tire bubble detection, which can effectively discover structural or material defects and improve and enhance tire quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a schematic diagram of the distribution of various structures of the tire burst prediction and alarm system in the present invention.

[0024] Description of the numbers in the figure:

[0025] 1. Frame; 2. Tire; 3. Vibration sensor; 4. Rotary encoder; 5. Wheel hub; 6. Bearing; 7. Central processing unit; 8. Display unit; 9. Warning indicator. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0027] Embodiment 1:

[0028] See also Figure 1 A tire burst prediction and alarm system includes a frame 1, a plurality of tires 2 are mounted on the frame 1, a vibration sensor 3 and a rotary encoder 4 are mounted on the rotating shaft of the tire 2, the vibration sensor 3 receives and compiles vibration-related signals of the tire 2, and the rotary encoder 4 receives and compiles rotation speed-related signals of the tire 2;

[0029] A wheel hub 5 and a bearing 6 are mounted on each tire 2. The wheel hub 5, the bearing 6 and the tire 2 are connected as a whole, and the central axes of the three are collinear. The tire 2, the wheel hub 5 and the frame 1 are kept rotating through the bearing 6.

[0030] The control room area of ​​the frame 1 is provided with a central processing device 7, a display device 8 and a warning indicator 9. The central processing device 7 receives and processes the signals of the compiled tire 2 and the rotary encoder 4, displays the received and processed signals at the display device 8, and triggers an alarm signal at the warning indicator 9.

[0031] See also Figure 1 Specifically, when processing the signal, the central processing device 7 performs a fast Fourier transform on the average vibration signal recorded by the vibration sensor 3 at a selected time interval to create a harmonic spectrum of the selected tire 2.

[0032] The central processing unit 7 includes any one of a computer, a vehicle system or a CPU processor.

[0033] The harmonic spectrum of the selected tire 2 is cleared by applying a coherence function to minimize the influence of all other vibration sources on the harmonic spectrum of the selected tire 2. The latest spectrum is compared with the stored value of the standard spectrum of the selected tire 2 to track the changes in the amplitude of each harmonic. By analyzing the changes in the harmonic amplitude and comparing it with the predetermined failure standard, it is determined whether the selected tire 2 is about to have a local failure, thereby achieving rapid identification of tire 2 explosion prediction.

[0034] Specifically, the warning indicator 9 includes a buzzer and a flashing light;

[0035] The display device 8 is any one of a display screen, a display panel, and an indicator.

[0036] Working principle:

[0037] When the tire 2 explosion prediction and alarm system is working, the tire 2 cooperates with the wheel hub 5 and the bearing 6 to achieve free rotation, thereby driving the frame 1 or the vehicle to move. During this process, the vibration sensor 3 receives and compiles the vibration-related signal of the tire 2, the rotary encoder 4 receives and compiles the rotation speed-related signal of the tire 2, the central processing device 7 receives and processes and compiles the signals of the tire 2 and the rotary encoder 4, displays the received and processed signals at the display device 8, and triggers the alarm signal at the warning indicator 9.

[0038] Example 2

[0039] Based on the above embodiment 1, further description is given.

[0040] The present invention is applicable to a vehicle, a tire testing machine, and a vehicle bench having one or more tires 2 , and the vehicle, the tire testing machine, and the vehicle bench are all supported by the corresponding tires 2 .

[0041] See also Figure 1 A frame 1 or a vehicle is provided with a plurality of tires 2, and the frame 1 is provided with springs, shock absorbers, bearings 6, couplings, transmission shafts, transmissions, motors, and the like.

[0042] The central processing unit 7 applies Fourier analysis techniques to determine when a tire blowout or severe tread separation is likely and / or imminent, and then displays a warning in the vehicle cab or test machine control room via a display unit 8 and a warning indicator 9. In addition, the warning can be specific to a specific tire 2, and even further identify the rotation angle, fault, and problem type indication of the fault-inducing defect in the specific tire 2.

[0043] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tire explosion prediction and alarm system, comprising a frame (1), on which a plurality of tires (2) are mounted, characterized in that: A vibration sensor (3) and a rotary encoder (4) are mounted on the rotating shaft of the tire (2), wherein the vibration sensor (3) receives and compiles a vibration-related signal of the tire (2), and the rotary encoder (4) receives and compiles a rotation speed-related signal of the tire (2); A wheel hub (5) and a bearing (6) are mounted on each of the tires (2); the wheel hub (5), the bearing (6) and the tire (2) are connected as a whole, and the central axes of the three are collinear; and the tire (2), the wheel hub (5) and the frame (1) are kept in rotation via the bearing (6); The control room area of ​​the frame (1) is provided with a central processing device (7), a display device (8) and a warning indicator (9); the central processing device (7) receives and processes the signals of the tire (2) and the rotary encoder (4), displays the received and processed signals at the display device (8), and triggers an alarm signal at the warning indicator (9).

2. A tire explosion prediction and alarm system according to claim 1, characterized in that: The central processing device (7) performs a fast Fourier transform on the average vibration signal recorded by the vibration sensor (3) at a selected time interval when processing the signal to create a harmonic spectrum of the selected tire (2); The central processing unit (7) includes any one of a computer, a vehicle system or a CPU processor.

3. A tire explosion prediction and alarm system according to claim 1, characterized in that: The warning indicator (9) includes a buzzer and a flashing light; The display device (8) is any one of a display screen, a display panel, and an indicator.

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