CN102756686A - Method and device for early alarming of side dumping of vehicle - Google Patents
Method and device for early alarming of side dumping of vehicle Download PDFInfo
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- CN102756686A CN102756686A CN2011101052921A CN201110105292A CN102756686A CN 102756686 A CN102756686 A CN 102756686A CN 2011101052921 A CN2011101052921 A CN 2011101052921A CN 201110105292 A CN201110105292 A CN 201110105292A CN 102756686 A CN102756686 A CN 102756686A
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Abstract
The invention discloses a method and a device for early alarming of side dumping of a vehicle. The method comprises the following steps: a sensor is used for detecting the transverse load transferring rate and the lateral acceleration value of the vehicle in the driving process; the sensor sends detected data into a microprocessing unit; the microprocessing unit compares the transverse load transferring rate and the lateral acceleration value with respective preset thresholds; when the transverse load transferring rate and the lateral acceleration value are over the preset thresholds, a processor controls the alarm device to give an alarm. Since the technical scheme is adopted, compared with the prior art, the invention has the advantages that the deformation stress value and the lateral acceleration value of steel plate springs at the two sides of the detected vehicle are adopted, the detected data is compared by the processor, and the alarming is carried out on the condition over the preset threshold; the lateral acceleration is adopted for correcting the transverse load transferring rate, so that the false alarming and early alarming caused by interference of the similar conditions under the actual driving condition of the vehicle to the judgment of the transverse load transferring rate is prevented.
Description
Technical field
The present invention relates to a kind of method and apparatus of safe early warning, particularly a kind of method and apparatus of early warning vehicle rollover.
Background technology
Along with the continuous development of Domestic Automotive Industry and the improvement of road traffic facility; Automobile driving speed improves constantly, and causes the generation of a large amount of traffic accidents, causes casualties and enormous economic loss; Therefore, running safety more and more receives people's attention.Some automobiles such as truck tanker, medium and heavy lorry, heavy semi-trailer etc. are because characteristics such as its centroid position is high, quality and volume are bigger, at tempo turn and bend diameter than the rollover accident hour very easily takes place.Hazard rating according to U.S.'s highway traffic safety Public Roads Administration (NHTSA) accident that vehicle rollover causes is only second to the caused accident of vehicle collision, occupies second.Europe and North America statistics of traffic accidents analysis show that vehicle side turning accounts for and causes 5% of personal injury traffic accident, account for 20% of the traffic accident that there is the personnel death.The vehicle of vehicle rollover rotates vehicle rollover around the longitudinal axis in the process of moving and is meant that vehicle rotates 90 ° or bigger angle around the longitudinal axis in the process of moving, so that the contacted dangerous sideway movement of vehicle body and ground.Vehicle rollover generally is divided into two kinds: a kind of is to trip rollover, and lateral sliding promptly takes place during vehicle ', with obstacle lateral impact on the road surface it " is tripped "; A kind of is the rollover that curvilinear motion causes, promptly vehicle is when travels down, and the vehicle lateral acceleration surpasses the rollover threshold value, and the vertical antagonistic force of inboard wheel causes rollover when being zero.The factor that influences vehicle rollover is a lot, is divided into two big types usually: the one, with the static factor of automobile design relating to parameters, like height of center of mass, wheelspan, suspension and tire characteristics etc.; The 2nd, the different factor with running car, like driver's the pattern that turns to, the shape of road surface and adhesion value, automobile carries pattern, has accessible etc. on the road surface.For example in the jar of tank lorry during filled with fluid, the quality of fluid cargo is uniformly distributed in the jar, and the rollover characteristic of vehicle is basic identical during with transportation equivalent solid goods.But when jar in be the part cargo shipment fluid cargo and turn to when going; Because the flowing power of liquid, pot liquid will rock, under the effect of gravity and force of inertia etc.; The centroid position of car load also will change; The rollover characteristic of tank lorry is affected, and its rollover threshold value reduces, and causes the generation of rollover accident easily.At present; Chinese patent publication number CN2825373Y, name is called the application case of " dumping car anti-rollover warning device ", the actual conditions when it is characterized in that adopting the two-way switch of inclination to work according to dumping car; The horizontal ramp angles of perception is two different angles closed conductings respectively.Carry out current limliting with resistance, the light-emitting diode of high brightness and buzzer phone carry out the sound and light alarm prompting to switch of inclination institute perception ramp angles, and this systemic-function is single; Adopt mechanical switch; Measuring reliability is poor, and the automobile kind of measurement is single, has limited popularizing and using of system.Traditional inclination measurement mechanism is the angle of roll of simple measured automobiles or the lateral acceleration of simple measured automobiles.And the angle of roll experiment value of automobile and actual inclination value differ greatly, and can accurately not judge whether automobile reaches the inclination condition.The present invention adopts and to measure lateral acceleration and the condition of two values of the transverse load rate of transform as the evaluation automobile roll simultaneously, makes result of a measurement more accurate, and reliability is stronger.
Summary of the invention
Technical matters to be solved by this invention is: a kind of method and apparatus of early warning vehicle rollover is provided, and its accuracy good, good reliability and have general usability are to overcome the deficiency of prior art.
The method that is achieved in that the early warning vehicle rollover of the present invention; Utilize sensor the transverse load rate of transform and the lateral acceleration value of vehicle in the process of moving; Sensor is sent to detected data in the microprocessing unit; Little handle singly compares the transverse load rate of transform and lateral acceleration value respectively with their predetermined threshold value, after they surpass predetermined threshold value, treater will be controlled warning device and report to the police.
The ratio of the steel spring deformational stress value that the described transverse load rate of transform is the vehicle both sides.
The device of early warning vehicle rollover, it comprises microprocessing unit, power supply, microprocessing unit is connected with power supply, on microprocessing unit, is connected with left side steel spring strain sensor, right side steel spring strain sensor, lateral acceleration sensor and warning device.
Warning device comprises annunciator, safety lamp, warning light, alarm lamp and telltale.
The present invention is directed to the experiment vehicle on basis of experimental; Vehicle both sides spring deflection and lateral acceleration characteristic during according to the critical rollover of vehicle; Utilization stress strain gauge and lateral acceleration sensor and combined with intelligent controller are to the detection of turning on one's side of the vehicle in going; When vehicle has rollover trend, chaufeur is carried out sound and light alarm, make chaufeur take measures such as Reduced Speed Now to avoid the generation of rollover accident, or the rollover early warning signal is provided for later anti-rollover device.
Specifically; Main basis for estimation is judged vehicle rollover for utilizing the transverse load transfer case; The warning algorithm of promptly turning on one's side, the rollover warning algorithm is estimated the transverse load transfer case and the transverse load rate of transform through the ratio of the steel spring deformational stress value of vehicle both sides.
Transverse load rate of transform LLTR (Lateral Load Transfer Rate) is defined as: the difference of the vertical load on the wheel of vehicle both sides and the ratio of vertical load sum are shown below:
In the formula, F
LiBe the vertical load on the vehicle left side wheel; F
RiBe the vertical load on the vehicle right side wheels; I and n are respectively the position of axle and total axletree number.Our last root axletree of picking up the car is i=1 in the present invention, gets an axletree, calculate simple and convenient, during because of vehicle rollover last root axletree at first Y turn on one's side and become to having inclination trend, therefore, last root axletree is calculated.
In addition, the present invention also uses the side direction of lateral acceleration sensor monitors vehicle to quicken, and the rollover condition is carried out the supplementary sum correction.Some extraordinary circumstances in the vehicle ' process; When passing through bigger convex closure, pit and bevelled road surface like vehicle; Can produce bigger influence to the transverse load rate of transform of vehicle, if only with the transverse load rate of transform as the factor of turning on one's side, then warning is easy to generate wrong report.The present invention uses the transverse load rate of transform and lateral acceleration as the rollover factor, has only when the measured value of two factors all surpasses predetermined threshold value, and warning device just can be reported to the police.Compare with other rollover forewarn system and to have broken away from the low shortcoming with poor reliability of actual accuracy that the single rollover factor brings; Because the present invention calculates the transverse load rate of transform through the steel spring deformational stress value of measuring the vehicle both sides, therefore be applicable to that all are with the vehicle of steel spring as the suspension system elastic element.
Microprocessing unit is judged the motoring condition of vehicle through the data of obtaining sensor monitors; Sensor is sent to microprocessing unit with real-time data monitored; Microprocessing unit is brought these data into and is arranged in advance in the microprocessing unit in-to-in program; Calculate the transverse load rate of transform and compare with lateral acceleration value and the rollover threshold value that is preset in the microprocessing unit program, if less than the rollover threshold value, warning device is not reported to the police; If greater than the rollover threshold value, show that then vehicle has rollover trend, warning device begins to report to the police.
Principle of work of the present invention is as shown in Figure 2, and when starting vehicle, microprocessing unit starts, and begins to receive the signal that comes from sensor output.Microprocessing unit can detect the next data of steel spring strain sensor transmission of both sides in real time during work, and the existing program of this data substitution, calculates the transverse load rate of transform.Simultaneously; The lateral acceleration value that microprocessing unit can real-time detection side comes to the acceleration pick-up transmission, microprocessing unit compares these two values and predetermined threshold value, when these two values are all turned on one's side during threshold value greater than preset; Microprocessing unit will be opened the switch of warning device; Warning device is started working and is carried out acousto-optic, and promptly annunciator sends the warning buzzing, the alarm lamp flicker.
The right half part of principle of work Fig. 2 is the back work part: the effect of this part is the ratio that calculates the load of vehicle both sides, and informs the driver through attention display.When goods is put inequality or because the goods in transit position changes when the load proportion of cause vehicles both sides is too lacked of proper care, the driver will remind in system.The foundation of the ratio of the load of judgement vehicle both sides is the ratio of comparison vehicle both sides steel spring deformational stress value, and its condition precedent is that vehicle ' is steady, and promptly lateral acceleration approaches 0 state.Shown in Figure 2 like principle, when microprocessing unit detected steel spring deformation and do not recover initial value, detection side judged to acceleration pick-up whether lateral acceleration approaches 0 again; If; Microprocessing unit will detect and contrast the steel spring deformational stress value of both sides, and institute is calculated on the ratio display alarm telltale, and then judges the whether excess of stroke of this ratio; If the excess of stroke, the forecast warning lamp will glimmer to remind the driver.
Method of the present invention accurately and reliably, institute's employing components and parts technology maturation, volume is little; Functional reliability is high, need not existing vehicle is carried out big structural modification, is fit to all kinds and new old vehicle, has significant effect for the driving safety that improves vehicle.
Owing to adopted technique scheme; Compared with prior art; The present invention adopts and detects vehicle the steel spring deformational stress value and the lateral acceleration value of both sides in the process of moving, and will detect data and compare through treater, and the situation that exceeds predetermined threshold value is reported to the police; The present invention estimates the transverse load transfer case through the ratio of the steel spring adaptability to changes of both sides; And adopt lateral acceleration that the transverse load rate of transform is revised; Taken all factors into consideration the transverse load rate of transform and the lateral acceleration rollover factor; Prevent flase alarm that the analogue under the vehicle actual travel situation causes the interference of transverse load rate of transform judge index and report to the police too early that improved the low and antijamming capability of border accuracy of reporting to the police greatly, practice property is strong.Method of the present invention accurately and reliably, institute's employing components and parts technology maturation, volume is little; Functional reliability is high, need not existing vehicle is carried out big structural modification, is fit to all kinds and new old vehicle, has significant effect for the driving safety that improves vehicle.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is a fundamental diagram of the present invention;
Accompanying drawing 3, accompanying drawing 4 are steel spring strain sensor and microprocessing unit junction circuit figure;
Accompanying drawing 6 is alarm circuit figure;
Accompanying drawing 7 is safety etc., warning light and alarm lamp circuit diagram;
Accompanying drawing 8 is the attention display circuit diagram.
The specific embodiment
Embodiments of the invention: the method for early warning vehicle rollover; Utilize sensor the steel spring deformational stress value and the lateral acceleration value of vehicle both sides in the process of moving; Sensor is sent to detected data in the microprocessing unit; Little transverse load rate of transform of handling the ratio of single steel spring deformational stress value with the vehicle both sides as vehicle; And the transverse load rate of transform of vehicle will reach the lateral acceleration value and compare with their predetermined threshold value in processing equipment respectively, and after they surpass predetermined threshold value, treater will be controlled warning device and report to the police.
The structure of the device of early warning vehicle rollover is as shown in Figure 1; Adopt the STC89C52 micro controller system as microprocessing unit 1; It is connected with power supply 2, on microprocessing unit 1, connects left side steel spring strain sensor 3, right side steel spring strain sensor 4, lateral acceleration sensor 5 and warning device; Warning device comprises annunciator 6, safety lamp 7, warning light 8 and alarm lamp 9 and telltale 10; Adopt the communication signal line to be connected between each parts and the microprocessing unit 1.
Claims (4)
1. the method for an early warning vehicle rollover; It is characterized in that: utilize sensor the transverse load rate of transform and the lateral acceleration value of vehicle in the process of moving; Sensor is sent to detected data in the microprocessing unit; Little handle singly compares the transverse load rate of transform and lateral acceleration value respectively with their predetermined threshold value, after they surpass predetermined threshold value, treater will be controlled warning device and report to the police.
2. the method for early warning vehicle rollover according to claim 1 is characterized in that: the ratio of the steel spring deformational stress value that the described transverse load rate of transform is the vehicle both sides.
3. the device of an early warning vehicle rollover; It comprises microprocessing unit (1); Power supply (2); Microprocessing unit (1) is connected with power supply (2), it is characterized in that: on microprocessing unit (1), be connected with left side steel spring strain sensor (3), right side steel spring strain sensor (4), lateral acceleration sensor (5) and warning device.
4. warning device according to claim 3 is characterized in that: warning device comprises annunciator (6), safety lamp (7), warning light (8), alarm lamp (9) and telltale (10).
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057502A (en) * | 2012-12-28 | 2013-04-24 | 南京恒知讯科技有限公司 | Device and method for detecting vehicle instantaneous acceleration and prompting automobile gestures and automobile |
| CN103213578A (en) * | 2013-04-18 | 2013-07-24 | 贵州大学 | Real-time and early-warning vehicle laterally turning method and device |
| CN103465905A (en) * | 2013-10-11 | 2013-12-25 | 贵州大学 | Car side turning prevention early warning method and early warning system based on air spring |
| CN104773175A (en) * | 2015-04-23 | 2015-07-15 | 湖南大学 | Method for detecting side turnover of vehicle |
| CN106004870A (en) * | 2016-06-23 | 2016-10-12 | 吉林大学 | Vehicle stability integrated control method based on variable-weight model prediction algorithm |
| CN106956660A (en) * | 2017-05-03 | 2017-07-18 | 山东农业大学 | A kind of tumble pre-alarming control system and control method for orchard supervisor |
| CN106970524A (en) * | 2017-01-17 | 2017-07-21 | 江苏大学 | Vehicle roll motion secure linear quadratic form optimal LQG controller design methods for Active suspension |
| CN107791967A (en) * | 2017-09-08 | 2018-03-13 | 北汽福田汽车股份有限公司 | For determining the method, apparatus and vehicle of vehicle rollover |
| CN108162955A (en) * | 2017-12-28 | 2018-06-15 | 长沙理工大学 | A kind of vehicle active anti-rollover control system and method with time lag compensation |
| CN108216028A (en) * | 2018-01-25 | 2018-06-29 | 华南理工大学 | A kind of vehicle rollover safety situation evaluation system based on intelligent terminal |
| CN110167828A (en) * | 2017-01-02 | 2019-08-23 | 大众汽车有限公司 | For making the method for the Vehicular turn with automatic running pattern and with the vehicle of automatic running pattern |
| CN110667568A (en) * | 2019-09-24 | 2020-01-10 | 江苏徐工工程机械研究院有限公司 | Rollover alarm system, rollover risk prediction method and rollover alarm method |
| CN112699924A (en) * | 2020-12-22 | 2021-04-23 | 安徽卡思普智能科技有限公司 | Method for identifying lateral stability of vehicle |
| CN118182322A (en) * | 2024-05-17 | 2024-06-14 | 山东天鸿汽车科技股份有限公司 | On-vehicle fault detection early warning system of trailer |
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| CN103057502B (en) * | 2012-12-28 | 2015-11-25 | 南京恒知讯科技有限公司 | A kind of apparatus and method and automobile detecting vehicle instantaneous acceleration prompting automobile attitude |
| CN103057502A (en) * | 2012-12-28 | 2013-04-24 | 南京恒知讯科技有限公司 | Device and method for detecting vehicle instantaneous acceleration and prompting automobile gestures and automobile |
| CN103213578A (en) * | 2013-04-18 | 2013-07-24 | 贵州大学 | Real-time and early-warning vehicle laterally turning method and device |
| CN103465905A (en) * | 2013-10-11 | 2013-12-25 | 贵州大学 | Car side turning prevention early warning method and early warning system based on air spring |
| CN104773175A (en) * | 2015-04-23 | 2015-07-15 | 湖南大学 | Method for detecting side turnover of vehicle |
| CN106004870B (en) * | 2016-06-23 | 2018-06-12 | 吉林大学 | A kind of intact stability integrated control method based on variable weight model prediction algorithm |
| CN106004870A (en) * | 2016-06-23 | 2016-10-12 | 吉林大学 | Vehicle stability integrated control method based on variable-weight model prediction algorithm |
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| CN110167828A (en) * | 2017-01-02 | 2019-08-23 | 大众汽车有限公司 | For making the method for the Vehicular turn with automatic running pattern and with the vehicle of automatic running pattern |
| CN106970524B (en) * | 2017-01-17 | 2020-08-28 | 江苏大学 | Design method of vehicle roll motion safety linear quadratic form optimal LQG controller for active suspension |
| CN106970524A (en) * | 2017-01-17 | 2017-07-21 | 江苏大学 | Vehicle roll motion secure linear quadratic form optimal LQG controller design methods for Active suspension |
| CN106956660A (en) * | 2017-05-03 | 2017-07-18 | 山东农业大学 | A kind of tumble pre-alarming control system and control method for orchard supervisor |
| CN107791967A (en) * | 2017-09-08 | 2018-03-13 | 北汽福田汽车股份有限公司 | For determining the method, apparatus and vehicle of vehicle rollover |
| CN108162955B (en) * | 2017-12-28 | 2019-07-09 | 长沙理工大学 | A kind of vehicle active anti-rollover control system with time delay identification and compensation function |
| CN108162955A (en) * | 2017-12-28 | 2018-06-15 | 长沙理工大学 | A kind of vehicle active anti-rollover control system and method with time lag compensation |
| CN108216028B (en) * | 2018-01-25 | 2021-09-21 | 华南理工大学 | Vehicle rollover safety situation assessment system based on intelligent terminal |
| CN108216028A (en) * | 2018-01-25 | 2018-06-29 | 华南理工大学 | A kind of vehicle rollover safety situation evaluation system based on intelligent terminal |
| WO2020211882A1 (en) * | 2019-09-24 | 2020-10-22 | 江苏徐工工程机械研究院有限公司 | Vehicle rollover warning system, vehicle rollover risk prediction method, and vehicle rollover warning method |
| CN110667568B (en) * | 2019-09-24 | 2021-11-30 | 江苏徐工工程机械研究院有限公司 | Rollover alarm system, rollover risk prediction method and rollover alarm method |
| CN110667568A (en) * | 2019-09-24 | 2020-01-10 | 江苏徐工工程机械研究院有限公司 | Rollover alarm system, rollover risk prediction method and rollover alarm method |
| US11816939B2 (en) | 2019-09-24 | 2023-11-14 | Jiangsu Xcmg Construction Machinery Research Institute Ltd. | Rollover alarming system, rollover risk prediction method, and rollover alarming method |
| CN112699924A (en) * | 2020-12-22 | 2021-04-23 | 安徽卡思普智能科技有限公司 | Method for identifying lateral stability of vehicle |
| CN118182322A (en) * | 2024-05-17 | 2024-06-14 | 山东天鸿汽车科技股份有限公司 | On-vehicle fault detection early warning system of trailer |
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Effective date of registration: 20191204 Address after: No. c-y-421, Chuangye building, Guiyang University Science Park, No. 103, Longdong Road, Shuanglong Airport Economic Zone, Guiyang City, Guizhou Province 550005 Patentee after: Guizhou shimeicheng Information Technology Co., Ltd Address before: 550000 Cai Jia Guan, Guizhou City, Guiyang Province Patentee before: Guizhou University |
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