CN102556160A - Turning radius display and vehicle speed alarm method for wheeled vehicle and device thereof - Google Patents
Turning radius display and vehicle speed alarm method for wheeled vehicle and device thereof Download PDFInfo
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- CN102556160A CN102556160A CN2010106123670A CN201010612367A CN102556160A CN 102556160 A CN102556160 A CN 102556160A CN 2010106123670 A CN2010106123670 A CN 2010106123670A CN 201010612367 A CN201010612367 A CN 201010612367A CN 102556160 A CN102556160 A CN 102556160A
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Abstract
The invention discloses a turning radius display and vehicle speed alarm method for a wheeled vehicle, and is characterized in that a displacement sensor is arranged on a turning oil cylinder on an axle, the displacement sensor is connected with a controller, a rotating speed sensor is arranged on an axle input shaft, the rotating speed sensor is connected with the controller, and the output ends of the controller are respectively connected with an alarm and a display; a displacement and a rotating speed, which are collected by the displacement sensor and the rotating speed sensor, are computed by the controller; a calculated vehicle speed V and a vehicle gravity center turning radius R are displayed on the display at any time, and maximum allowable values of a vehicle overturning moment and a slip force are input into a database, the computed result and the maximum allowable values are compared to make a judgment, when a calculated vehicle turning centrifugal force F is greater than the maximum allowable value of the slip force or a computed overturning moment M is greater than the maximum allowable value of the overturning moment, the controller sends a command to an alarm to give an alarm.
Description
Technical field
The invention belongs to the wheeled car parameter shows and the warning device field.Apply to wheel undercarriage, adapted hydraulic steering gear and the vehicle that turns to oil cylinder enforcement to turn to.
Background technology
Special vehicle such as snow removing machine and industrial wheeled equipment is through the work under particular job environment or the special pavement conditions of being everlasting.The walking of turning, even to swerve be often to occur.The speed of a motor vehicle is low, influences work efficiency, if the speed of a motor vehicle is high, turn radius is less again, and the outside centnifugal force of vehicle is just bigger, and it is wet and slippery or soft to add the road surface, causes the outside slippage of car load easily, or the trend of tumbling occurs, and causes potential safety hazard.
The two states of driving safety difference: like accompanying drawing 1, complete vehicle weight has a downward gravity G through center of gravity, when turning and the speed of a motor vehicle is arranged, produces centnifugal force F, and F crosses conference and produces the outside slippage of car body even the danger of tumbling.
At present the situation of turn inside diameter driving safety difference is not warned demonstration, and the safety of various types of vehicles operation leans on the driver to ensure with operating experience fully, on the road surface or during the condition difference of workyard, is easy to because of misoperation dangerous situation take place.
Summary of the invention
For guaranteeing vehicle operating safety, the present invention provides a kind of wheeled car turn radius to show and car speed alarm device.
The wheeled car turn radius shows and speed of a motor vehicle alarm method; On vehicle bridge, turn to oil cylinder place installation position displacement sensor; Displacement pickup links to each other with controller; On the vehicle bridge input shaft, adorn tachogen, tachogen also links to each other with controller, and the mouth of controller connects annunciator and telltale respectively; Controller is to displacement pickup and tachogen collects displacement and rotating speed calculates (computing formula is following); Speed V that calculates and vehicle's center of gravity point turn radius R show on telltale at any time; And maximum permissible value input database with slide-out moment and skid force; Result of calculation is contrasted, makes judgement with it; When the turn inside diameter centnifugal force F that calculates greater than the maximum permissible value of skid force or the tilting moment M that calculates during greater than the maximum permissible value of tilting moment, controller sends instruction and gives alarm equipment alarm.
The described signal of tachogen being imported by controller calculates according to following formula (1) and calculates turn inside diameter centnifugal force F:
In the formula,
F-turn inside diameter centnifugal force;
The full car weight amount of G-;
The V-road speed;
The g-acceleration due to gravity;
R-vehicle's center of gravity point turn radius.
From above formula analysis, gravity acceleration g, full car weight amount G, and vehicle's center of gravity position, manufacturing firm grasps.Road speed V, the rotary speed data that can measure through vehicle bridge input shaft place and vehicle bridge transmitting ratio, vehicle wheel roll radius calculate in real time, also are easy to obtain.Express with functional relation at present:
V＝f(n) (2)
In the formula,
The V-speed of a motor vehicle;
N-vehicle bridge input shaft rotating speed.
Vehicle's center of gravity point turn radius R calculates according to the displacement s process that the construction parameter l and the displacement pickup of vehicle are measured, and expresses with functional relation at present:
R＝f(l，s) (3)
Tilting moment M computing formula:
M＝F×h (4)
When M will report to the police during greater than the moment standard.
The wheeled car turn radius of realizing said method shows and car speed alarm device; It is characterized in that, mainly by displacement pickup, the controller that links to each other with displacement pickup; The tachogen that links to each other with controller constitutes with annunciator that links to each other with controller respectively and telltale.
The invention has the beneficial effects as follows: the mode with data display and warning is prompted to vivid turn radius of driver and speed of a motor vehicle numerical value, and the speed of a motor vehicle reaches dangerous numerical value when turning, and just reports to the police; Remind the driver to make car retardation; Stop to take place dangerous situation, different turn radiuss, speed of a motor vehicle limit value is different; So list can not determine whether dangerous situation from speed of a motor vehicle size.
Description of drawings
Fig. 1 is a situation scheme drawing in the vehicle hand, wherein, and AA wheel distances, h vehicle's center of gravity height, G complete vehicle weight, g acceleration due to gravity, W vehicle's center of gravity position, the centnifugal force that the F Ackermann steer angle produces.
Fig. 2 is a structural representation of the present invention, wherein: 1. displacement pickup, 2. tachogen, 3. controller, 4. annunciator, 5. telltale, 6. Pattern Select Switch.
Fig. 3 is the structural representation of Fig. 2 middle controller 3.
The specific embodiment
With reference to the accompanying drawings the present invention is done and further describes:
Referring to accompanying drawing 1, accompanying drawing 2; The wheeled car turn radius shows and speed of a motor vehicle alarm method; On vehicle bridge, turn to oil cylinder place installation position displacement sensor, displacement pickup links to each other with controller, on the vehicle bridge input shaft, adorns tachogen; Tachogen also links to each other with controller, and the mouth of controller connects annunciator and telltale respectively; Controller is to displacement pickup and tachogen collects displacement and rotating speed calculates (computing formula is following); Speed V that calculates and vehicle's center of gravity point turn radius R show on telltale at any time; And maximum permissible value input database with slide-out moment and skid force; Result of calculation is contrasted, makes judgement with it; When the turn inside diameter centnifugal force F that calculates greater than the maximum permissible value of skid force or the tilting moment M that calculates during greater than the maximum permissible value of tilting moment, controller sends instruction and gives alarm equipment alarm.
Calculate turn inside diameter centnifugal force F according to formula (1):
In the formula,
F-turn inside diameter centnifugal force;
The full car weight amount of G-;
The V-road speed;
The g-acceleration due to gravity;
R-vehicle's center of gravity point turn radius.
From above formula analysis, gravity acceleration g, full car weight amount G, and vehicle's center of gravity position, manufacturing firm grasps.Road speed V, the rotary speed data that can measure through vehicle bridge input shaft place and vehicle bridge transmitting ratio, vehicle wheel roll radius calculate in real time, also are easy to obtain.Express with functional relation at present:
V＝f(n) (2)
In the formula,
The V-speed of a motor vehicle;
N-vehicle bridge input shaft rotating speed.(recording) by tachogen
Vehicle's center of gravity point turn radius R calculates according to the displacement s process that the construction parameter l and the displacement pickup of vehicle are measured, and expresses with functional relation at present:
R＝f(l，s) (3)
Tilting moment M computing formula:
M=F * h will report to the police during greater than the moment standard as M.(4)
The wheeled car turn radius of realizing said method shows and car speed alarm device; It is characterized in that, mainly by displacement pickup, the controller that links to each other with displacement pickup; The tachogen that links to each other with controller constitutes with annunciator that links to each other with controller respectively and telltale.
Referring to accompanying drawing 3; Described controller is by signal acquisition module (being used to gather the analog signal that tachogen and displacement pickup send); Computing module (change into digital signal with the rotating speed that collects and shift simulation signal then calculate) according to above-mentioned formula, data memory module (being used to store maximum permissible value), (data and maximum permissible value after will calculating compare judge module; More than or equal to for being, less than being non-; ), (when contrast was " being ", the instruction warning device powered alarm execution module, instruction warning device outage when contrasting to " non-".), wherein, data memory module A is connected with judge module through Pattern Select Switch with data memory module B, and other sequence of modules is formed by connecting.
We are according to different working environments, with automobile storage hidden danger be subdivided into two kinds of forms:
A. the outside slippage of Ackermann steer angle: 1. covered by ice and snow owing to the road surface; 2. move the place muddy water is arranged; 3. the soft or surface coverage in workyard has sandstone, and this all makes the adhesive ability of vehicle diminish, and the turning centnifugal force makes the whole outwards slippage of vehicle greater than adhesive ability.
B. vehicle ' unstability: less when turn radius, when the speed of a motor vehicle was too high, the centnifugal force of vehicle was excessive, made the vehicle unstability and outwards overturning.
Corresponding to the hidden danger of above-mentioned two kinds of forms, the maximum permissible value of two kinds of patterns is set, be stored in data memory module A and data memory module B respectively, be connected through select switch between these two modules and the judge module.What data memory module A stored is the skid force maximum permissible value, and adhesive ability=adhesion value multiply by the car weight amount and multiply by a safety factor again, and the scope of this safety factor is 60～80%; What data memory module B stored is the tilting moment maximum permissible value, and 1/2nd of wheelspan is multiply by in tilting moment=vehicle weight, multiply by a safety factor again, and the scope of this safety factor is 60～80%.On ice and snow road, walk or during operation, select the A pattern when vehicle, when the road surface is all right, select then B pattern.
" snow removing machine ", industrial wheeled equipment and some special vehiclees, different with transport vehicle, through the very poor occasion work of the pavement conditions of being everlasting or go, especially often turn.For increasing work efficiency, its speed of a motor vehicle can not be too slow, and turn radius is little, and the speed of a motor vehicle is high and be easy to outside slippage or tumble, and causes danger.So far all lean on the driver operation experience to grasp, or the sacrifice work efficiency make Slow down.
For fine assurance road speed, increase work efficiency, be unlikely to again to cause danger, make the speed of a motor vehicle be defined in safe range, we have designed this patent.Show in real time with the turn radius and the speed of a motor vehicle, assist the driver to understand the driving situation; With speed of a motor vehicle type of alarm, make the driver be defined in safe range to the speed of a motor vehicle, avoid occurring dangerous situation, thereby stop the generation of accident.Vehicle safety, primary beyond doubt, its social benefit is difficult to estimate, and not only stops accident but also can increase work efficiency, and can bring very big economic benefit.
Claims (4)
1. the wheeled car turn radius shows and speed of a motor vehicle alarm method; It is characterized in that; On vehicle bridge, turn to oil cylinder place installation position displacement sensor, displacement pickup links to each other with controller, on the vehicle bridge input shaft, adorns tachogen; Tachogen also links to each other with controller, and the mouth of controller connects annunciator and telltale respectively; Controller is to displacement pickup and tachogen collects displacement and rotating speed calculates; Speed V that calculates and vehicle's center of gravity point turn radius R show on telltale at any time; And maximum permissible value input database with slide-out moment and skid force; Result of calculation is contrasted, makes judgement with it; When the turn inside diameter centnifugal force F that calculates greater than the maximum permissible value of skid force or the tilting moment M that calculates during greater than the maximum permissible value of tilting moment, controller sends instruction and gives alarm equipment alarm.
2. the wheeled car turn radius of realizing the said method of claim 1 shows and car speed alarm device; It is characterized in that, mainly by displacement pickup, the controller that links to each other with displacement pickup; The tachogen that links to each other with controller constitutes with annunciator that links to each other with controller respectively and telltale.
3. device according to claim 2 is characterized in that, described controller is by signal acquisition module, computing module; Data memory module, judge module, execution module is formed; Wherein, data memory module is connected with judge module, and other sequence of modules is formed by connecting.
4. device according to claim 3 is characterized in that, described data memory module is divided into data memory module A and data memory module B, is connected with judge module through select switch.
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| CN2010106123670A CN102556160A (en) | 2010-12-29 | 2010-12-29 | Turning radius display and vehicle speed alarm method for wheeled vehicle and device thereof |
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| CN2010106123670A CN102556160A (en) | 2010-12-29 | 2010-12-29 | Turning radius display and vehicle speed alarm method for wheeled vehicle and device thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496338B (en) * | 2013-10-11 | 2016-05-11 | 深圳市元征科技股份有限公司 | Galloping turning alarm method and device |
| CN108463690A (en) * | 2016-01-14 | 2018-08-28 | 福特全球技术公司 | Assess u turn feasibility |
| CN108828980A (en) * | 2018-05-15 | 2018-11-16 | 机科（山东）重工科技股份有限公司 | A kind of mistake is bent away from the prediction technique and system of mental and physical efforts |
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| CN1041319A (en) * | 1988-09-25 | 1990-04-18 | 李蓓 | The anti-sideslip of automobile turning, the method for tumbling |
| DE4416991A1 (en) * | 1994-05-13 | 1995-11-16 | Pietzsch Ag | Warning HGV driver against overturning in negotiation of curve |
| CN201012625Y (en) * | 2006-06-23 | 2008-01-30 | 李郁青 | Device for preventing vehicle from side-turning over when the vehicle is making a turn |
| CN101140199A (en) * | 2007-09-14 | 2008-03-12 | 哈尔滨工业大学 | Vehicle side turning alarming device |
| CN201240372Y (en) * | 2008-07-10 | 2009-05-20 | 陈和平 | High efficacy automatic anti-roll apparatus for automobile |
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2010
- 2010-12-29 CN CN2010106123670A patent/CN102556160A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041319A (en) * | 1988-09-25 | 1990-04-18 | 李蓓 | The anti-sideslip of automobile turning, the method for tumbling |
| DE4416991A1 (en) * | 1994-05-13 | 1995-11-16 | Pietzsch Ag | Warning HGV driver against overturning in negotiation of curve |
| CN201012625Y (en) * | 2006-06-23 | 2008-01-30 | 李郁青 | Device for preventing vehicle from side-turning over when the vehicle is making a turn |
| CN101140199A (en) * | 2007-09-14 | 2008-03-12 | 哈尔滨工业大学 | Vehicle side turning alarming device |
| CN201240372Y (en) * | 2008-07-10 | 2009-05-20 | 陈和平 | High efficacy automatic anti-roll apparatus for automobile |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496338B (en) * | 2013-10-11 | 2016-05-11 | 深圳市元征科技股份有限公司 | Galloping turning alarm method and device |
| CN108463690A (en) * | 2016-01-14 | 2018-08-28 | 福特全球技术公司 | Assess u turn feasibility |
| CN108463690B (en) * | 2016-01-14 | 2022-07-08 | 福特全球技术公司 | Evaluating U-turn feasibility |
| CN108828980A (en) * | 2018-05-15 | 2018-11-16 | 机科（山东）重工科技股份有限公司 | A kind of mistake is bent away from the prediction technique and system of mental and physical efforts |
| CN108828980B (en) * | 2018-05-15 | 2021-06-11 | 机科（山东）重工科技股份有限公司 | Method and system for predicting over-bending centrifugal force |
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Owner name: TIANJIN CHENGPU ENGINEERING MACHINERY CO., LTD. Free format text: FORMER OWNER: TIANJIN YOUDA ELECTROMECHANICAL HYDRAULIC COMPLETE EQUIPMENT CO., LTD. Effective date: 20130603 |
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Effective date of registration: 20130603 Address after: Tianjin city Xiqing District Yangliuqing town 300380 green road to the east side of South Applicant after: TIANJIN CHENGPU ENGINEERING MACHINERY CO., LTD. Address before: 300393, No. 3, Xingguang Road, North Industrial Park, Middle North Town, Xiqing District, Tianjin Applicant before: Tianjin Youda Electromechanical Hydraulic Complete Equipment Co., Ltd. |
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Application publication date: 20120711 |