CN203824529U - Tire deformation online testing device based on optical flow - Google Patents
Tire deformation online testing device based on optical flow Download PDFInfo
- Publication number
- CN203824529U CN203824529U CN201420188027.3U CN201420188027U CN203824529U CN 203824529 U CN203824529 U CN 203824529U CN 201420188027 U CN201420188027 U CN 201420188027U CN 203824529 U CN203824529 U CN 203824529U
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- China
- Prior art keywords
- tire
- chip microcomputer
- light stream
- transport module
- wireless transport
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/06—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
- B60C23/066—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle by monitoring wheel-centre to ground distance
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model provides a tire deformation online testing device based on optical flow. The device can realize instantaneous measurement of tire carcass deformation in travel. Through data processing and model resolving, motion information such as tire slip angles and slip rate, and force information such as tire side forces, aligning torque, longitudinal forces, etc. are obtained. The testing device is formed by an optical flow sensor, a lens support, a lens, a reflection surface, a single-chip microcomputer, a light source, a wireless transmission module, and a battery. Using the testing device, longitudinal deformation measurement in the tire and lateral deformation measurement in the tire based on the optical flow sensor can be performed. The testing device and the test method can provide real-time information of tire carcass deformation in all directions for passenger vehicles and commercial vehicles, and further combining a tire and vehicle dynamics, corresponding tire force and tire-road surface attachment information can be obtained, so as to improve underpan electronic control performance and vehicle security. The device is simple in structure, easy in integration, relatively low in cost, suitable in batch production, and high in efficiency.
Description
Technical field
The utility model belongs to tire condition on-line testing and Full Vehicle Dynamics control field, be specifically related to a kind of proving installation and method of the squeegee action based on light stream principle, the chassis electric-control system that can be passenger car and commercial car provides real-time carcass respectively to deformation information, corresponding tire force be can obtain and information is adhered on tire-road surface further combined with tire and Full Vehicle Dynamics, thereby the automatically controlled performance in chassis and vehicle security improved.
Background technology
In the tire of carcass distortion, sensing measurement is the core technology of intelligent tire, and people have attempted multiple sensors in practice, comprising: acceleration transducer, PSD(Position Sensitive Deflector) photoelectric sensor, piezoelectric film sensor.Existing these several sensors come with some shortcomings: what 1) acceleration transducer was directly measured is all directions acceleration, very complicated to the computation model of distortion by acceleration, need larger operand; 2) PSD photoelectric sensor precision is higher, but on the high side, be unfavorable for popularizing in automobile product, and this kind of sensor construction complexity, it is more difficult in tire, to arrange, is not suitable for volume production; 3) piezoelectric film sensor is difficult to realize the measurement of multi-direction distortion.To sum up, a kind of applicable doughnut working environment, economical and practical tire inner sensor is urgently developed.
Utility model content
In order to overcome the deficiency of existing tire inner sensor, the utility model proposes a kind of squeegee action online testing device based on light stream, can realize the transient measurement of the middle carcass distortion of advancing, resolve the information of power such as can obtaining the movable information such as slip angle of tire, slip rate and side force of tire, aligning torque, longitudinal force through data processing and model.
The utility model is achieved through the following technical solutions, the following accompanying drawing of accompanying drawings:
A kind of squeegee action online testing device based on light stream, by light stream sensor 1, lens bracket 2, camera lens 3, reflecting surface 4, single-chip microcomputer 5, light source 6, wireless transport module 7 and battery 8 form, described reflecting surface 4 is positioned at the inside surface place of tire tread, on reflecting surface 4, scribble reflecting coating, to realize the identification of carcass side direction and linear deformation, directly over it, wheel rim place is fixed with light stream sensor 1, lens bracket 2, camera lens 3, single-chip microcomputer 5, light source 6, wireless transport module 7 and battery 8, wherein, one end of lens bracket 2 is fixedly connected with light stream sensor 1, the other end is fixedly connected with camera lens 3,
Described light stream sensor 1 is connected with single-chip microcomputer 5 respectively by data communication circuit with wireless transport module 6, and single-chip microcomputer 5 is realized test control and the data receiver to light stream sensor 1 and measured signal wireless transport module 6 in modulating by tire is passed to upper receiving system;
Described upper receiving system is furnished with wireless transport module, single-chip microprocessor MCU and host computer computer, receives the wireless signal that wireless transport module 6 is exported in tire, passes to host computer and realize the record of tire build-in test signal after single-chip microcomputer demodulation; Battery 8 is connected with light source 7, wireless transport module 6, single-chip microcomputer 5 and light stream sensor 1 by power circuit, realizes the power supply of each element.
A kind of the above proving installation that adopts carries out linear deformation measuring method in the tire based on light stream sensor, when tire is during in lengthwise movement, the linear deformation of carcass is measured by light stream sensor 1, concrete steps are: when tire is during in longitudinal rolling condition, light source 6 illuminates 4 near zones of the reflecting surface in tire, light projects above camera lens 3 after reflecting surface 4 reflections, and images on light stream sensor 1 after being focused on by camera lens 3; Set light stream sensor 1 by single-chip microcomputer 5 and carry out signals collecting one time every a little time interval, recorded the image of its tyre surface inside surface obtaining of current time by single-chip microcomputer 5, the image in the image to current time and a upper moment contrasts, the length travel of measuring the image that obtains between two moment is poor, can calculate and obtain the linear deformation of carcass in conjunction with demarcation above, thereby obtain the information that records the holocyclic carcass linear deformation that tire rolls a week in rolling process.
A kind of the above proving installation that adopts carries out side direction deformation measurement method in the tire based on light stream sensor, when tire is in the time that lateral deviation is moved, the lateral deformation of carcass is measured by light stream sensor 1, concrete steps are: when tire is during in lateral deviation state, light source 6 illuminates 4 near zones of the reflecting surface in tire, light projects above camera lens 3 after reflecting surface 4 reflections, and image on light stream sensor 1 after being focused on by camera lens 3, set light stream sensor 1 by single-chip microcomputer 5 and carry out signals collecting one time every a little time interval, single-chip microcomputer 5 records the image of its tyre surface inside surface obtaining of current time, the image in the image to current time and a upper moment contrasts, the lateral shift that obtains the image that obtains between two moment is poor, obtain the lateral deformation of carcass in conjunction with calibrated and calculated above, thereby obtain the information that records the holocyclic carcass lateral deformation that tire rolls a week in rolling process.
The beneficial effects of the utility model are as follows:
1) the utility model application light stream sensor is realized the measurement of carcass distortion, and it is simple in structure, is easy to integratedly, and cost is lower, is applicable to volume production; 2) the utility model is applied a set of sensor and can be realized the measurement that the side direction of carcass, longitudinally instantaneous deformation and distortion distribute simultaneously, and efficiency is higher, and system is more reliable and more stable; 3) the utility model application light stream principle, realize the picture catching of two-forty by the optical sensing of low resolution, both reduce the burden of image processing, on hardware, realized high speed image seizure cheaply again, realized unredeemed trace internal strain distribution measuring in the past.
Brief description of the drawings
Fig. 1 carcass deformation test device front view;
Fig. 2 carcass deformation test device side view;
Fig. 3 carcass linear deformation test schematic diagram;
Fig. 4 carcass lateral deformation test schematic diagram;
Fig. 5 carcass deformation test wireless transmitting system schematic diagram.
It should be noted that above-mentioned concrete enforcement is used for giving an example.Those of ordinary skill in the art can recognize many amendments, variation and remodeling.These amendments, change and remodeling all in the application's aim and scope, and fall in the protection domain of claims.
Embodiment
Further illustrate particular content of the present utility model and embodiment thereof below in conjunction with accompanying drawing:
Consult Fig. 1 and Fig. 2, a kind of tire internal strain measuring device, comprising: light stream sensor 1, lens bracket 2, camera lens 3, reflecting surface 4, single-chip microcomputer 5, light source 6, wireless transport module 7, battery 8.
Wherein, reflecting surface 4 is positioned at the inside surface place of tire tread, on reflecting surface 4, scribbles reflecting coating, to realize the identification of carcass side direction and linear deformation.Directly over it, wheel rim place is fixed with light stream sensor 1, lens bracket 2, camera lens 3, single-chip microcomputer 5, light source 6, wireless transport module 7 and battery 8.Wherein, one end of lens bracket 2 is fixedly connected with light stream sensor 1, and the other end is fixedly connected with camera lens 3.
Consult Fig. 5, electrical equipment annexation of the present utility model is as follows: light stream sensor 1 is connected with single-chip microcomputer 5 respectively by data communication circuit with wireless transport module 6, and single-chip microcomputer 5 is realized test control and the data receiver to light stream sensor 1 and measured signal wireless transport module 6 in modulating by tire is passed to upper receiving system.Upper receiving system is furnished with wireless transport module, single-chip microcomputer (MCU) and host computer computer, can receive the wireless signal that wireless transport module 6 is exported in tire, passes to host computer and realize the record of tire build-in test signal after single-chip microcomputer demodulation.Battery 8 is connected with light source 7, wireless transport module 6, single-chip microcomputer 5 and light stream sensor 1 by power circuit, realizes the power supply of each element.
Consider the user demand of vehicle tyre, the utility model proposes a kind of carcass deformation test method for light stream sensor in this tire as follows:
1) carcass linear deformation is measured
As shown in figs. 1 and 3, when tire is during in lengthwise movement, under driven rolling, driving or damped condition, because tire is subject to the effect of extraneous longitudinal force, the change that on the inside surface of tire tread, the relative wheel rim of certain some meeting produces lengthwise position, the change of this position is the linear deformation Lz of carcass, and it reflects the longitudinal stress situation of tire.The linear deformation of carcass can be measured by light stream sensor 1.Be specially: when tire is during in longitudinal rolling condition, light source 6 illuminates 4 near zones of the reflecting surface in tire, light projects above camera lens 3 after reflecting surface 4 reflections, and images on light stream sensor 1 after being focused on by camera lens 3.Set light stream sensor 1 by single-chip microcomputer 5 and carry out signals collecting one time every a little time interval, recorded the image of its tyre surface inside surface obtaining of current time by single-chip microcomputer 5, the image in the image to current time and a upper moment contrasts, the length travel that can measure the image that obtains between two moment is poor, can obtain the linear deformation of carcass.The method can record the information of the holocyclic carcass linear deformation that tire rolls a week in rolling process.
2) carcass lateral deformation is measured
Consult Fig. 1 and 4, when tire is in the time that lateral deviation is moved, as the wheel of the rolling in the time that wheel rolling is located in toe-in or in steering situation, because tire is subject to the effect of extraneous side force, the change that on the inside surface of tire tread, the relative wheel rim of certain some meeting produces lateral position, the change of this position is the lateral deformation Lc of carcass, and it reflects the lateral force situation of tire.The lateral deformation of carcass can be measured by light stream sensor 1.Be specially: when tire is during in lateral deviation state, light source 6 illuminates 4 near zones of the reflecting surface in tire, light projects above camera lens 3 after reflecting surface 4 reflections, and images on light stream sensor 1 after being focused on by camera lens 3.Set light stream sensor 1 by single-chip microcomputer 5 and carry out signals collecting one time every a little time interval, single-chip microcomputer 5 records the image of its tyre surface inside surface obtaining of current time, the image in the image to current time and a upper moment contrasts, the lateral shift that obtains the image that obtains between two moment is poor, obtains the lateral deformation of carcass.The method can record the information of the holocyclic carcass lateral deformation that tire rolls a week in rolling process.
As can be seen here, carcass deformation test device of the present utility model can be realized the carcass distortion of tire under vertical cunning, lateral deviation, inclination operating mode, has good practicality.
Claims (2)
1. the squeegee action online testing device based on light stream, formed by light stream sensor (1), lens bracket (2), camera lens (3), reflecting surface (4), single-chip microcomputer (5), light source (6), wireless transport module (7) and battery (8), it is characterized in that:
Described reflecting surface (4) is positioned at the inside surface place of tire tread, reflecting surface scribbles reflecting coating on (4), to realize the identification of carcass side direction and linear deformation, directly over it, wheel rim place is fixed with light stream sensor (1), lens bracket (2), camera lens (3), single-chip microcomputer (5), light source (6), wireless transport module (7) and battery (8), wherein, one end of lens bracket (2) is fixedly connected with light stream sensor (1), and the other end is fixedly connected with camera lens (3);
Described light stream sensor (1) is connected with single-chip microcomputer (5) respectively by data communication circuit with wireless transport module (6), and single-chip microcomputer (5) is realized test control and the data receiver to light stream sensor (1) and measured signal wireless transport module (6) in modulating by tire is passed to upper receiving system.
2. a kind of squeegee action online testing device based on light stream according to claim 1, is characterized in that:
Described upper receiving system is furnished with wireless transport module, single-chip microcomputer (MCU) and host computer computer, receives the wireless signal of wireless transport module (6) output in tire, passes to host computer and realize the record of tire build-in test signal after single-chip microcomputer demodulation; Battery (8) is connected with light source (7), wireless transport module (6), single-chip microcomputer (5) and light stream sensor (1) by power circuit, realizes the power supply of each element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420188027.3U CN203824529U (en) | 2014-04-17 | 2014-04-17 | Tire deformation online testing device based on optical flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420188027.3U CN203824529U (en) | 2014-04-17 | 2014-04-17 | Tire deformation online testing device based on optical flow |
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| Publication Number | Publication Date |
|---|---|
| CN203824529U true CN203824529U (en) | 2014-09-10 |
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| CN201420188027.3U Expired - Fee Related CN203824529U (en) | 2014-04-17 | 2014-04-17 | Tire deformation online testing device based on optical flow |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884293A (en) * | 2014-04-17 | 2014-06-25 | 吉林大学 | Tire deformation online testing device and testing method based on light streams |
| WO2019127505A1 (en) * | 2017-12-29 | 2019-07-04 | 深圳配天智能技术研究院有限公司 | Tyre and vehicle |
| CN110658004A (en) * | 2018-06-29 | 2020-01-07 | 卡尔蔡司光电科技有限责任公司 | Method for testing a tyre |
| CN111405992A (en) * | 2017-12-01 | 2020-07-10 | 横滨橡胶株式会社 | Tire assembly and tire deformation state determination system |
-
2014
- 2014-04-17 CN CN201420188027.3U patent/CN203824529U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884293A (en) * | 2014-04-17 | 2014-06-25 | 吉林大学 | Tire deformation online testing device and testing method based on light streams |
| CN103884293B (en) * | 2014-04-17 | 2016-09-07 | 吉林大学 | Squeegee action online testing device based on light stream and method of testing |
| CN111405992A (en) * | 2017-12-01 | 2020-07-10 | 横滨橡胶株式会社 | Tire assembly and tire deformation state determination system |
| CN111405992B (en) * | 2017-12-01 | 2022-06-03 | 横滨橡胶株式会社 | Tire assembly and tire deformation state determination system |
| WO2019127505A1 (en) * | 2017-12-29 | 2019-07-04 | 深圳配天智能技术研究院有限公司 | Tyre and vehicle |
| CN110658004A (en) * | 2018-06-29 | 2020-01-07 | 卡尔蔡司光电科技有限责任公司 | Method for testing a tyre |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20170417 |