Vehicle bushing vibration isolation performance detection system and vehicle
The vehicle bushing vibration isolation performance testing system, which combines vibration sensing and image acquisition modules, can judge the vehicle's operating status and external environment in real time, solving the problem of false alarms caused by external interference and improving the accuracy of detection and the driving experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG LEAPMOTOR TECH CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-14
Smart Images
Figure CN224499869U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of bushing vibration isolation performance testing technology, and in particular to a vehicle bushing vibration isolation performance testing system and vehicle. Background Technology
[0002] To reduce the transmission of vibrations generated by tire rotation and power transmission system into the vehicle during driving, the industry standard is to install vibration isolation bushings along the path from the vibration source to the vehicle body.
[0003] As vehicles age, the vibration isolation performance of vehicle bushings gradually declines. When the vibration isolation performance declines to a certain extent, the vehicle bushings can no longer meet the vibration isolation requirements, eventually leading to vehicle vibration.
[0004] In related technologies, the vibration isolation performance of vehicle bushings is determined by measuring the vibration acceleration of the active and passive ends of the bushing using vibration sensors. However, the above measurement method is prone to false alarms due to abnormal external interference, which greatly affects the user experience of drivers and passengers. Utility Model Content
[0005] This application provides a vehicle bushing vibration isolation performance testing system and vehicle, which solves the shortcomings of current measurement methods that are prone to false alarms due to abnormal external interference, and improves the user experience of drivers and passengers.
[0006] To achieve the above objectives, the main technical solutions adopted in this application include:
[0007] In a first aspect, embodiments of this application provide a vehicle bushing vibration isolation performance testing system, including: a vibration sensing module, an image acquisition module, and an on-board host, wherein the on-board host is connected to the vibration sensing module and the image acquisition module respectively;
[0008] The vibration sensing module is set at the active and passive ends of the vehicle bushing, and the image acquisition module sends the external environmental status of the vehicle to the on-board host. The on-board host is used to obtain the operating conditions of the vehicle.
[0009] When the external environment is in a bumpy or collision-prone state and / or the operating conditions are in an abnormal or extreme state, the on-board host will stop testing the vibration isolation performance of the vehicle bushing corresponding to the vibration sensing module.
[0010] According to the vehicle bushing vibration isolation performance testing system proposed in this application, the on-board host acquires the vehicle's operating conditions and the external environmental conditions of the vehicle acquired by the image acquisition module in real time. When the external environmental conditions are bumpy and collision conditions, or the operating conditions are abnormal extreme conditions, or the external environmental conditions are bumpy and collision conditions and the operating conditions are abnormal extreme conditions, the on-board host stops testing the vibration isolation performance of the vehicle bushing corresponding to the vibration sensing module. This can avoid the influence of some external abnormal interference on the test results, thereby reducing the risk of false alarms and improving the user experience of drivers and passengers.
[0011] Optionally, the vibration sensing module sends the active end vibration acceleration and the passive end vibration acceleration to the vehicle host. When the external environment is stable and the operating condition is normal driving condition, the vehicle host detects the vibration isolation performance of the vehicle bushing based on the active end vibration acceleration and the passive end vibration acceleration.
[0012] Optionally, the vibration sensing module includes a first vibration sensor and a second vibration sensor. The first vibration sensor is disposed at the active end to collect the vibration acceleration of the active end, and the second vibration sensor is disposed at the passive end to collect the vibration acceleration of the passive end.
[0013] The first vibration sensor and the second vibration sensor are respectively connected to the vehicle-mounted host.
[0014] Optionally, both the first vibration sensor and the second vibration sensor are triaxial acceleration vibration sensors.
[0015] Optionally, it also includes: a display module connected to the vehicle host, which displays a warning message when the vehicle host detects an abnormality in the vibration isolation performance of the vehicle bushing.
[0016] Optionally, the display module is an instrument display panel.
[0017] Optionally, it also includes: an alarm module, which is connected to the vehicle host, and the alarm module provides an alarm when the vehicle host detects an abnormality in the vibration isolation performance of the vehicle bushing.
[0018] Optionally, there are multiple vibration sensing modules, each corresponding to a different vehicle bushing. Each vibration sensing module is located at both the active and passive ends of the corresponding vehicle bushing.
[0019] Optionally, the image acquisition module provides 360° panoramic imaging.
[0020] Secondly, embodiments of this application provide a vehicle, including the vehicle bushing vibration isolation performance testing system of the first aspect embodiment.
[0021] According to the vehicle proposed in the embodiments of this application, by providing the above-mentioned vehicle bushing vibration isolation performance testing system, the on-board host obtains the vehicle's operating conditions and the external environment status of the vehicle collected by the image acquisition module in real time. When the external environment status is a bumpy collision state, or the operating condition is an abnormal extreme condition, or the external environment status is a bumpy collision state and the operating condition is an abnormal extreme condition, the on-board host stops testing the vibration isolation performance of the vehicle bushing corresponding to the vibration sensing module. This can avoid the influence of some external abnormal interference on the test results, thereby reducing the risk of false alarms and improving the user experience of drivers and passengers. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of a vehicle bushing vibration isolation performance testing system provided in one embodiment of this application.
[0024] [Explanation of Labels in the Attached Image]
[0025] Vehicle bushing vibration isolation performance testing system 100;
[0026] First vibration sensor 11; Second vibration sensor 12;
[0027] Image acquisition module 2;
[0028] Vehicle-mounted host 3;
[0029] Vehicle bushing 4;
[0030] Active terminal 5;
[0031] Passive end 6;
[0032] Display module 7;
[0033] Alarm module 8. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0035] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.
[0036] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.
[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0038] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.
[0039] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).
[0040] It should be noted that during vehicle operation, the vibrations generated by the rotation of the tires and the power transmission system are transmitted to the interior of the vehicle through the body structure, causing the passenger compartment to shake. The shaking components include, but are not limited to, the seats, steering wheel, floor, dashboard, and doors.
[0041] The current industry standard is to install vibration isolation bushings along the path from the vibration source to the vehicle body. These bushings typically include rubber bushings and hydraulic bushings. They have a high vibration isolation capacity, which ensures the overall comfort of the vehicle.
[0042] However, as the vehicle ages, the vibration isolation performance of the vehicle bushings will gradually decline. When the vibration isolation performance declines to a certain extent, the vehicle bushings will be unable to meet the vibration isolation requirements, eventually leading to vehicle vibration.
[0043] In related technologies, the vibration isolation performance of vehicle bushings is determined by measuring the vibration acceleration of the active and passive ends of the bushing using vibration sensors. However, the above measurement method is prone to false alarms due to abnormal external interference, which greatly affects the user experience of drivers and passengers.
[0044] Based on this, this application proposes a vehicle bushing vibration isolation performance testing system 100. The on-board host 3 acquires the vehicle's operating conditions and the external environment status of the vehicle acquired by the image acquisition module 2 in real time. When the external environment status is a bumpy collision state, or the operating conditions are abnormal extreme conditions, or the external environment status is a bumpy collision state and the operating conditions are abnormal extreme conditions, the on-board host 3 stops testing the vibration isolation performance of the vehicle bushing 4 corresponding to the vibration sensing module. This can avoid the influence of some external abnormal interference on the test results, thereby reducing the risk of false alarms and improving the user experience of drivers and passengers.
[0045] The vehicle bushing vibration isolation performance testing system 100 and the vehicle proposed in this application are described below with reference to the accompanying drawings.
[0046] like Figure 1 As shown, the vehicle bushing vibration isolation performance testing system 100 according to the first aspect embodiment of this application includes: a vibration sensing module, an image acquisition module 2, and an on-board host 3. The on-board host 3 is connected to the vibration sensing module and the image acquisition module 2 respectively. The vibration sensing module is set at the active end 5 and the passive end 6 of the vehicle bushing 4. The image acquisition module 2 sends the external environmental status of the vehicle to the on-board host 3. The on-board host 3 is used to obtain the operating conditions of the vehicle. When the external environmental status is a bumpy collision state and / or the operating conditions are abnormal extreme conditions, the on-board host 3 stops testing the vibration isolation performance of the vehicle bushing 4 corresponding to the vibration sensing module.
[0047] Specifically, the vibration source of the vehicle is transmitted into the vehicle along the vibration transmission path. In order to reduce the vibration transmitted from the vibration source into the vehicle, a vehicle bushing 4 can be installed on the vibration transmission path. The side of the vibration source serves as the active end 5 of the vehicle bushing 4, and the side inside the vehicle serves as the passive end 6 of the vehicle bushing 4. For example, the active end 5 of the vehicle bushing 4 includes, but is not limited to, chassis suspension tires, power transmission system, etc., and the passive end 6 of the vehicle bushing 4 includes, but is not limited to, seats, steering wheel, instrument panel, door, etc.
[0048] It should be noted that although the vehicle is maintained and repaired every once in a while, the degree of vibration isolation performance degradation of the vehicle bushing 4 cannot be measured by routine visual maintenance alone during use, so the degradation problem of the vehicle bushing 4 cannot be detected in time.
[0049] In related technologies, in order to detect the vibration isolation performance of the vehicle bushing 4, vibration sensing modules are usually set at the active end 5 and the passive end 6 of the vehicle bushing 4. The vibration sensing modules are used to acquire vibration data from the active end 5 and the passive end 6 of the vehicle bushing 4. At the same time, the vibration sensing modules are connected to the vehicle host 3 via cables or wireless signals. The vehicle host 3 receives the vibration data from the active end 5 and the passive end 6 of the vehicle bushing 4 sent by the vibration sensing modules, calculates the vibration isolation amount based on the vibration data from the active end 5 and the passive end 6 of the vehicle bushing 4, and then judges the current vibration isolation performance of the vehicle bushing 4 by comparing the vibration isolation amount with the preset vibration isolation threshold.
[0050] However, the above detection methods have certain drawbacks. For example, when a vehicle is driving over speed bumps or potholes, if the speed is high, the instantaneous impact on the tires may cause the chassis system bushings to exceed their displacement limits, which may lead to the instantaneous vibration isolation failure of the vehicle bushings 4. If the on-board unit 3 makes a judgment based on the current detection data, it will greatly increase the risk of false alarms. Alternatively, when the vehicle experiences abnormal bumps or collisions, the vehicle bushings 4 may also fail to isolate vibrations due to excessive instantaneous impact, which also increases the risk of false alarms.
[0051] Furthermore, the vehicle itself operating under abnormal extreme conditions can also lead to abnormal judgment of vibration isolation performance. For example, when the vehicle is accelerating at high throttle or in an emergency braking state, or when the speed and torque of the vehicle's engine or drive motor are abnormal, these will cause the vehicle to generate abnormal impact vibration. The vehicle bushing 4 may fail to isolate vibration instantaneously under abnormal impact vibration, which will also lead to the risk of false alarm of vibration isolation failure.
[0052] Based on this, in order to reduce the risk of false alarms in the vibration isolation performance test of the vehicle bushing 4, this application sets up an image acquisition module 2. The image acquisition module 2 is connected to the vehicle via cable or wireless signal. The image acquisition module 2 is used to collect the external environmental status of the vehicle and send it to the vehicle host 3. The vehicle host 3 also acquires the vehicle's operating conditions in real time. When judging the vibration isolation performance of the vehicle bushing 4, the risk of false alarms in the vibration isolation performance test is reduced by comprehensively analyzing the external environmental status of the vehicle and / or the operating conditions of the vehicle.
[0053] Specifically, the collected vehicle external environment conditions include road surface image information and external environment images. The road surface image information includes speed bumps, cement roads, asphalt roads, dirt roads, potholes, etc., while the external environment images include abnormal bumps and accident collisions. Some of these external environment conditions can cause vehicle bumps and collisions, thus affecting the vibration isolation performance test. The image acquisition module 2 classifies these situations that are likely to cause vehicle bumps and collisions as bump and collision states. For example, when a vehicle is driving on a speed bump or pothole, the vehicle is prone to bumps. Therefore, speed bumps and potholes in the road surface image information belong to bump and collision states. When a vehicle experiences an abnormal bump or accident collision, the collision will also affect the vibration isolation performance test. Therefore, abnormal bumps and accident collisions also belong to bump and collision states.
[0054] Vehicle operating conditions include vehicle speed, throttle opening, braking system operation, and engine or drive motor speed and torque. Generally speaking, normal idling, constant speed, or driving at low to medium throttle are considered normal driving conditions. However, high-throttle acceleration, emergency braking, or abnormal engine or drive motor speed and torque are considered abnormal extreme conditions, which have a significant impact on vibration isolation performance testing.
[0055] When performing vibration isolation performance testing on the vehicle bushing 4, the external environmental conditions and / or operating conditions of the vehicle are taken into account for judgment. As a first example, if the external environmental conditions obtained by the image acquisition module 2 are bumpy and collision-prone, the on-board host 3 will stop performing vibration isolation performance testing on the vehicle bushing 4 corresponding to the vibration sensing module. For example, when the image acquisition module 2 detects that the vehicle is driving on a speed bump or pothole, or when it detects that the vehicle has experienced abnormal bumps or accidents, the on-board host 3 will stop the vibration isolation performance testing, thereby avoiding false alarms in the vibration isolation performance testing caused by bumps and collisions.
[0056] As a second example, if the vehicle operating condition obtained by the on-board host 3 is an abnormal extreme condition, the on-board host 3 will stop performing vibration isolation performance testing on the vehicle bushing 4 corresponding to the vibration sensing module. For example, if the vehicle is in a state of high-throttle acceleration, emergency braking, or when the speed and torque of the vehicle's engine or drive motor are abnormal, the on-board host 3 will stop the vibration isolation performance testing, thereby avoiding false alarms in vibration isolation performance testing under abnormal extreme conditions of the vehicle.
[0057] As a third example, if the external environment state acquired by the image acquisition module 2 is a bumpy collision state and the vehicle operating condition acquired by the vehicle host 3 is an abnormal extreme condition, the vehicle host 3 will stop testing the vibration isolation performance of the vehicle bushing 4 corresponding to the vibration sensing module. This will not be illustrated here; please refer to the above for details.
[0058] In summary, according to the vehicle bushing vibration isolation performance testing system 100 proposed in this application embodiment, the vibration sensing module is set at the active end 5 and passive end 6 of the vehicle bushing 4. The on-board host 3 can judge the vibration isolation performance of the vehicle bushing 4 in real time based on the vibration data of the active end 5 and passive end 6 of the vehicle bushing 4. At the same time, the on-board host 3 also acquires the vehicle's operating conditions and the external environmental conditions of the vehicle collected by the image acquisition module 2 in real time. When the external environmental conditions are bumpy and collision conditions, or the operating conditions are abnormal extreme conditions, or the external environmental conditions are bumpy and collision conditions and the operating conditions are abnormal extreme conditions, the on-board host 3 stops testing the vibration isolation performance of the vehicle bushing 4 corresponding to the vibration sensing module. This can avoid the influence of some external abnormal interference on the test results, thereby reducing the risk of false alarms and improving the user experience of drivers and passengers.
[0059] In some embodiments of this application, the vibration sensing module sends active end vibration acceleration and passive end vibration acceleration to the vehicle host 3. When the external environment is stable and the operating condition is normal driving condition, the vehicle host 3 detects the vibration isolation performance of the vehicle bushing 4 based on the active end vibration acceleration and passive end vibration acceleration.
[0060] Specifically, the stable operating state refers to the state when the vehicle is driving on relatively flat roads such as cement roads, asphalt roads, and dirt roads. The image acquisition module 2 classifies these relatively flat roads as the stable operating state. The normal driving condition refers to the condition when the vehicle is driving at normal idling speed, constant speed, or medium and low throttle.
[0061] When the external environment of the vehicle is stable and the vehicle is in normal driving condition, the vehicle is in a stable driving condition and there will be basically no abnormal impact vibration. Therefore, the vibration isolation performance test results of the vehicle bushing 4 by the on-board host 3 when the vehicle is driving smoothly are relatively accurate.
[0062] Based on this, when the external environment is stable and the operating condition is normal driving, the vehicle-mounted host 3 in this application detects the vibration isolation performance of the vehicle bushing 4 based on the vibration acceleration at the active end and the vibration acceleration at the passive end. It should be noted that the vibration acceleration at the active end 5 and the passive end 6 of the bushing are acquired by vibration sensing modules respectively. The vehicle-mounted host 3 calculates the vibration isolation amount based on the vibration acceleration at the active end and the passive end, and then judges the current vibration isolation performance of the vehicle bushing 4 by comparing the vibration isolation amount with a preset vibration isolation threshold. For example, if the calculated vibration isolation amount is greater than the preset vibration isolation threshold, it indicates that the current vibration isolation performance of the vehicle bushing 4 is good; if the calculated vibration isolation amount is less than or equal to the preset vibration isolation threshold, it indicates that the current vibration isolation performance of the vehicle bushing 4 is poor, and the vehicle bushing 4 needs to be replaced in time to prevent abnormal vehicle vibration.
[0063] It should be noted that the preset vibration isolation threshold is defined by the overall vehicle R&D design. Generally, engine bushings, drive motor bushings, and shock absorber systems require a preset vibration isolation threshold of no less than 20dB, while subframe bushings require a preset vibration isolation threshold of no less than 10dB. The specific threshold is defined based on the actual vehicle performance development requirements. Since rubber-based vehicle bushings 4 themselves will experience vibration isolation performance deviations, generally within a range of no more than 20%, this invention sets a 40% reduction in the designed vibration isolation amount as the preset vibration isolation threshold.
[0064] Therefore, testing the vibration isolation performance of the vehicle bushing 4 under stable external environmental conditions and normal driving conditions can, on the one hand, eliminate the influence of abnormal vibrations on the test results, thereby reducing the risk of false alarms and improving the user experience for drivers and passengers. On the other hand, it can also improve the accuracy of the vibration isolation performance test results, thus promptly reminding users to replace the vehicle bushing 4.
[0065] In some embodiments of this application, such as Figure 1 As shown, the vibration sensing module includes a first vibration sensor 11 and a second vibration sensor 12. The first vibration sensor 11 is set at the active end 5 to collect the vibration acceleration of the active end, and the second vibration sensor 12 is set at the passive end 6 to collect the vibration acceleration of the passive end. The first vibration sensor 11 and the second vibration sensor 12 are respectively connected to the vehicle host 3.
[0066] Specifically, the active end vibration acceleration of the vehicle bushing 4 is obtained through the first vibration sensor 11, and the passive end vibration acceleration of the vehicle bushing 4 is obtained through the second vibration sensor 12. The first vibration sensor 11 and the second vibration sensor 12 are connected to the vehicle host 3 through cables or wireless signals. The vehicle host 3 calculates the vibration isolation amount based on the obtained active end vibration acceleration and passive end vibration acceleration. By obtaining the active end vibration acceleration and passive end vibration acceleration of the vehicle bushing 4 through the first vibration sensor 11 and the second vibration sensor 12, the influence of vibration transmission on the first vibration sensor 11 and the second vibration sensor 12 can be reduced, thereby ensuring the accuracy of the data collected by the first vibration sensor 11 and the second vibration sensor 12, which is conducive to further improving the accuracy of the vibration isolation performance test results.
[0067] In some embodiments of this application, the first vibration sensor 11 and the second vibration sensor 12 are both triaxial acceleration vibration sensors.
[0068] Specifically, both the active end 5 and the passive end 6 of the vehicle bushing 4 are equipped with triaxial acceleration vibration sensors. The X, Y, and Z axes of the triaxial acceleration sensor do not represent specific directions, but rather represent the direction of one of the test channels of the triaxial acceleration sensor.
[0069] In the industry, vibration isolation performance is generally evaluated according to the vehicle coordinate system. Therefore, when arranging the three-axis accelerometer, attention should be paid to making the three axes of the three-axis accelerometer parallel to any one of the X, Y, and Z directions of the vehicle's rectangular coordinate system as much as possible. With this setting, the vibration acceleration signal measured along the corresponding axis represents the vibration of the vehicle bushing 4 in that direction under the vehicle's rectangular coordinate system.
[0070] When the mounting surface structure of the vehicle bushing 4 is complex and it is impossible to ensure that the three axes of the triaxial accelerometer are parallel to the X, Y, and Z directions of the vehicle coordinate system after installation, the angles of the three axes of the triaxial accelerometer and the three coordinate axes of the vehicle coordinate system can be set. The sum of the projections of the three axial vibration acceleration vectors measured by the triaxial accelerometer on the X, Y, and Z coordinate axes is the vibration acceleration in the three coordinate axis directions.
[0071] Assuming that one axis of the triaxial accelerometer at the active end 5 has an angle of α with the X-axis, β with the Y-axis, and γ with the Z-axis of the vehicle coordinate system, then the component vectors of the measured vibration acceleration S1 on the vehicle coordinate axes are X... S1 =S1*COSα,Y S1 =S1*COSβ,Z S1 =S1*COSγ. Similarly, if the other two axes have angles with the vehicle coordinate axis, the component vectors of the measured vibration accelerations S2 and S3 on the vehicle coordinate axis can also be calculated. Combining the component vectors of the three axes, the vibration acceleration in the direction of the vehicle coordinate axis can be calculated: X = X S1 +X S2 +X S3 ;Y=Y S1 +Y S2 +Y S3 Z = Z S1 +Z S2 +Z S3 Similarly, the triaxial accelerometer at the passive end 6 can use the same calculation method, which will not be elaborated here.
[0072] Ultimately, the triaxial accelerometers on the active and passive sides measured a total of six sets of vibration signals in three directions.
[0073] The vibration acceleration signals collected by the two triaxial accelerometers are then transmitted to the vehicle-mounted host 3 via cable or wireless signal. The vehicle-mounted host 3 calculates the vibration isolation amount of the vehicle bushing 4. The measured vibration acceleration signal is first converted into a vibration acceleration level, the mathematical expression of which is L. a =20lg(S / S0), where S is the measured effective value of vibration acceleration (unit: m / s²). 2 S0 is the reference acceleration (usually taken as 10). -6 m / s2 The vibration acceleration level is expressed in decibels (dB). After converting the six sets of data into vibration acceleration levels, the difference between the active side vibration acceleration level and the passive side vibration acceleration level in the same direction is the vibration isolation amount of the tested vehicle bushing 4 in that direction. In this way, the vibration isolation amount in three directions can be obtained.
[0074] With this setup, when comparing the vibration isolation amount with the preset vibration isolation threshold, the vibration isolation amount in each of the three directions is compared with the preset vibration isolation threshold corresponding to its respective direction. If the vibration isolation amount in any direction is less than or equal to its corresponding preset vibration isolation threshold, it indicates that the vibration isolation performance of the current vehicle bushing 4 is poor. Only when the vibration isolation amount in all three directions is greater than its corresponding preset vibration isolation threshold, it indicates that the vibration isolation performance of the current vehicle bushing 4 is good. This can further improve the accuracy of the vibration isolation performance test results and prevent insufficient rigor in unidirectional vibration testing.
[0075] In some embodiments of this application, such as Figure 1 As shown, it also includes: a display module 7, which is connected to the vehicle host 3. The display module 7 displays a warning message when the vehicle host 3 detects that the vibration isolation performance of the vehicle bushing 4 is abnormal.
[0076] Specifically, when testing the vibration isolation performance of the vehicle bushing 4, the external environmental conditions and / or the vehicle's operating conditions are considered. The on-board host 3 stops testing the vibration isolation performance of the vehicle bushing 4 corresponding to the vibration sensing module when the external environmental conditions are bumpy and / or the operating conditions are abnormal extreme conditions, thus eliminating vibration isolation abnormalities caused by external factors. When the external environmental conditions are stable and the operating conditions are normal driving conditions, the on-board host 3 tests the vibration isolation performance of the vehicle bushing 4 based on the active end vibration acceleration and the passive end vibration acceleration. If the vibration isolation amount calculated by the active end vibration acceleration and the passive end vibration acceleration is greater than the preset vibration isolation threshold, it indicates that the current vibration isolation performance of the vehicle bushing 4 is good. If the calculated vibration isolation amount is less than or equal to the preset vibration isolation threshold, it indicates that the current vibration isolation performance of the vehicle bushing 4 is poor. The on-board host 3 sends a warning message to the display module 7, and the display module 7 displays the warning message to issue a warning. After receiving the warning, the car owner can go to the after-sales service center to repair and replace the vibration isolation bushing. This setting can promptly remind the car owner to replace the vehicle bushing by displaying the warning information.
[0077] In some embodiments of this application, the display module 7 is an instrument panel. That is, warning information can be displayed on the instrument panel for easy viewing by the driver, preventing the driver from missing any reminders.
[0078] In some embodiments of this application, such as Figure 1As shown, it also includes: an alarm module 8, which is connected to the vehicle host 3. The alarm module 8 will issue an alarm when the vehicle host 3 detects an abnormality in the vibration isolation performance of the vehicle bushing 4. In other words, when the vehicle host 3 detects an abnormality in the vibration isolation performance of the vehicle bushing 4, it can also issue an alarm through the alarm module 8. The alarm module 8 includes, but is not limited to, an audible alarm device and a light alarm device, which can more clearly remind the owner to replace the vehicle bushing 4 in time.
[0079] In some embodiments of this application, there are multiple vibration sensing modules, and each vibration sensing module corresponds one-to-one with multiple vehicle bushings 4. Each vibration sensing module is set at the active end 5 and the passive end 6 of the corresponding vehicle bushing 4.
[0080] Specifically, the vehicle is vibration isolated by multiple vehicle bushings 4. Therefore, multiple vibration sensing modules can be set up to monitor multiple vehicle bushings 4 simultaneously. Each vibration sensing module corresponds one-to-one with a vehicle bushing 4. Each vibration sensing module is set at the active end 5 and passive end 6 of the corresponding vehicle bushing 4. For example, the first vibration sensor 11 and the second sensor of each vibration sensing module form a group. Each group of the first vibration sensor 11 and the second sensor is set at the active end 5 and the passive end 6 of the corresponding vehicle bushing 4, respectively. Each group of the first vibration sensor 11 and the second sensor sends the obtained vibration data to the vehicle host 3. The vehicle host 3 detects the corresponding vehicle bushing 4 according to each group of test data, thereby meeting the whole vehicle bushing vibration isolation monitoring requirements and avoiding detection omissions.
[0081] In some embodiments of this application, the image acquisition module 2 is a 360° panoramic image. That is, the vehicle's own 360° panoramic image can be used as the image acquisition module 2, which satisfies the image acquisition requirements without the need for dedicated image acquisition equipment, thus saving costs.
[0082] The vehicle according to the second aspect of this application includes the vehicle bushing vibration isolation performance testing system 100 of the first aspect embodiment.
[0083] According to the vehicle proposed in this application embodiment, by providing the above-mentioned vehicle bushing vibration isolation performance testing system 100, the on-board host 3 obtains the vehicle's operating conditions and the external environment status of the vehicle collected by the image acquisition module 2 in real time. When the external environment status is a bumpy collision state, or the operating condition is an abnormal extreme condition, or the external environment status is a bumpy collision state and the operating condition is an abnormal extreme condition, the on-board host 3 stops performing vibration isolation performance testing on the vehicle bushing 4 corresponding to the vibration sensing module. This can avoid the influence of some external abnormal interference on the test results, thereby reducing the risk of false alarms and improving the user experience of drivers and passengers.
[0084] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0085] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.
[0086] The above description is merely an embodiment of this application and is not intended to limit the scope 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 the claims of this application.
[0087] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. A vehicle bushing vibration isolation performance testing system, characterized in that, include: The system includes a vibration sensing module, an image acquisition module (2), and a vehicle-mounted host (3), wherein the vehicle-mounted host (3) is connected to the vibration sensing module and the image acquisition module (2) respectively. The vibration sensing module is set at the active end (5) and passive end (6) of the vehicle bushing (4). The image acquisition module (2) sends the external environment status of the vehicle to the vehicle host (3). The vehicle host (3) is used to obtain the operating conditions of the vehicle. The vehicle host (3) stops testing the vibration isolation performance of the vehicle bushing (4) corresponding to the vibration sensing module when the external environment is in a bumpy collision state and / or the operating condition is in an abnormal extreme condition.
2. The vehicle bushing vibration isolation performance testing system according to claim 1, characterized in that, The vibration sensing module sends the active end vibration acceleration and the passive end vibration acceleration to the vehicle host (3). When the external environment is stable and the operating condition is normal driving condition, the vehicle host (3) detects the vibration isolation performance of the vehicle bushing (4) based on the active end vibration acceleration and the passive end vibration acceleration.
3. The vehicle bushing vibration isolation performance testing system according to claim 2, characterized in that, The vibration sensing module includes a first vibration sensor (11) and a second vibration sensor (12). The first vibration sensor (11) is disposed at the active end (5) to collect the vibration acceleration of the active end, and the second vibration sensor (12) is disposed at the passive end (6) to collect the vibration acceleration of the passive end. The first vibration sensor (11) and the second vibration sensor (12) are respectively connected to the vehicle host (3).
4. The vehicle bushing vibration isolation performance testing system according to claim 3, characterized in that, Both the first vibration sensor (11) and the second vibration sensor (12) are triaxial acceleration vibration sensors.
5. The vehicle bushing vibration isolation performance testing system according to any one of claims 1-4, characterized in that, Also includes: The display module (7) is connected to the vehicle host (3). The display module (7) displays a warning message when the vehicle host (3) detects that the vibration isolation performance of the vehicle bushing (4) is abnormal.
6. The vehicle bushing vibration isolation performance testing system according to claim 5, characterized in that, The display module (7) is an instrument display panel.
7. The vehicle bushing vibration isolation performance testing system according to any one of claims 1-4, characterized in that, Also includes: An alarm module (8) is connected to the vehicle host (3). The alarm module (8) provides an alarm when the vehicle host (3) detects that the vibration isolation performance of the vehicle bushing (4) is abnormal.
8. The vehicle bushing vibration isolation performance testing system according to any one of claims 1-4, characterized in that, There are multiple vibration sensing modules, and each of the multiple vibration sensing modules corresponds to one of the multiple vehicle bushings (4). Each vibration sensing module is set at the active end (5) and passive end (6) of the corresponding vehicle bushing (4).
9. The vehicle bushing vibration isolation performance testing system according to any one of claims 1-4, characterized in that, The image acquisition module (2) provides 360° panoramic images.
10. A vehicle, characterized in that, Includes a vehicle bushing vibration isolation performance testing system (100) according to any one of claims 1-9.