CN204946358U - Section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining - Google Patents
Section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining Download PDFInfo
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- CN204946358U CN204946358U CN201520769151.3U CN201520769151U CN204946358U CN 204946358 U CN204946358 U CN 204946358U CN 201520769151 U CN201520769151 U CN 201520769151U CN 204946358 U CN204946358 U CN 204946358U
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Abstract
The utility model belongs to traffic safety technology field, specifically, relates to section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining.Described early warning plane comprise all be connected with single-chip microcomputer the equipment that measures the amount of rainfall, measure speed of a motor vehicle equipment, measure car weight equipment and variable information advices plate; The described equipment that measures the amount of rainfall is positioned at above trackside with measurement speed of a motor vehicle equipment; Described measurement car weight equipment is positioned on road surface; Described variable information advices plate be positioned at section, sharp turn before the top on road surface.Compared with prior art, under condition of raining described in the utility model, section, mountain highway sharp turn operation safety early warning plane has simple and compact for structure, rationally and volume is little, lightweight, be convenient to install, use easy and simple to handle, staff is without the need to carrying out the advantage of special training.
Description
Technical field
The utility model belongs to traffic safety technology field, specifically, relates to section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining.
Background technology
Along with the fast development of highway in China cause and the increase year by year of automobile pollution, traffic hazard grows with each passing day, and the inducement of traffic hazard comprises the many aspects such as people, car, road, environment, wherein bad steering behavior, complicated road alignment and adverse weather situation are the some factors causing accident to occur.Data according to statistics, most of traffic hazard occurs in Horizontal Curve Sections, reaches 36% in China, reaches 40% in the U.S.; The people such as Sherretz study Illinois, America 7 urban transportation data, and result shows to there is positive linear relationships between traffic hazard number and rainfall amount; According to Traffic Administration Bureau of Ministry of Public Security statistics, the first half of the year in 2009, the traffic fatalities caused owing to driving over the speed limit account for 13.8% of total fatal accident.Therefore, the research of section, sharp turn operation safety Forewarning Measures under intense rainfall condition and very urgent is added.
Due to the impact of rainfall, coefficient of road adhesion comparatively drying regime can significantly decline, and the reduction of attachment coefficient can cause the reduction of adhesion suffered by vehicle; In addition the radius value in section, sharp turn is less, can cause the increase of centrifugal force suffered by vehicle; In addition, if driver has hypervelocity behavior, the increase of centrifugal force can also be caused.Along with the decline of adhesion and the increase of centrifugal force, when the two balances, vehicle has the risk of slippage, finally causes the generation of traffic hazard.Because rainfall is natural cause, wayward; Sharp turn is a kind of road alignment, when road is built, and not malleable, therefore, and can only from the angle of regulation speed, when going to evade section, sharp turn driving under condition of raining, the risk that may exist.Finally, if can set up the relation of rainfall amount and adhesion, the relation of circular curve radius and the speed of a motor vehicle and centrifugal force, then the two compared, judges to obtain vehicle and crosses curved whether safety with present travel speed, and give driver with prompting, seem very meaningful.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining.
Section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining described in the utility model, described early warning plane comprise all be connected with single-chip microcomputer 5 the equipment that measures the amount of rainfall 1, measure speed of a motor vehicle equipment 2, measure car weight equipment 3 and variable information advices plate 4; The described equipment 1 that measures the amount of rainfall is positioned at above trackside with measurement speed of a motor vehicle equipment 2; Described measurement car weight equipment 3 is positioned on road surface; Described variable information advices plate 4 be positioned at section, sharp turn before the top on road surface.
Section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining described in the utility model, described single-chip microcomputer is MSP430 type single-chip microcomputer.
Section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining described in the utility model, described in the equipment 1 that measures the amount of rainfall be made up of rain sensor and collector two parts, this rain sensor adopts SL1 type rain sensor.
Section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining described in the utility model, described measurement speed of a motor vehicle equipment 2 is HT204 type radar meter.
Section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining described in the utility model, described measurement car weight equipment 3 adopts automobile weight-measuring instrument.
During work, the utility model is respectively by automobile weight-measuring instrument, HT204 type radar meter, SL1 type rain sensor, measure vehicle weight, Vehicle Speed, rainfall amount, and by numerical value stored in single-chip microcomputer, in conjunction with seeking advice from the circular curve radius numerical value obtained to designing unit, through type (1), (2), when calculating vehicle with a certain speeds, the road adherence in the section, sharp turn that it will sail into and centrifugal force, and by data stored in single-chip microcomputer, the size of contrast adhesion and centrifugal force, if the former is less than the latter, then before sharp turn a distance variable information advices plate on the information warning of being correlated with to driver, if the former is greater than the latter, then do not need prompting, vehicle can actual travel speed pass through.
The computing formula that between rainfall amount and adhesion, the algorithm of relation adopts Ji Tianjian to propose:
F
1＝(0.9458-0.0057v-0.0007l
0.6134×α
-0.3133×q
1.4483)×N(1)
In formula: F
1---adhesion (N);
V---the speed of a motor vehicle (km/h);
L---domatic length (m);
α---resultant gradient;
Q---rainfall amount (mm/min);
N---vehicle weight (N).
Because mountain highway mostly is two-lane highway, domatic length is substantially fixing, therefore, can be defaulted as definite value, be taken as 11.25m; In addition, because the impact of change on adhesion of resultant gradient is small, therefore, also can be defaulted as definite value, be taken as 8.54% (superelevation 8%, longitudinal gradient 3%).And the speed of a motor vehicle, rainfall amount, vehicle weight can be recorded by measuring equipment.
The relation of circular curve radius, the speed of a motor vehicle and centrifugal force can be obtained by the computing formula of centrifugal force:
In formula: F
2---centrifugal force (N);
N---vehicle weight (N);
V---the speed of a motor vehicle (km/h);
G---acceleration of gravity (m/s
2);
R---circular curve radius (m).
Wherein, vehicle weight and the speed of a motor vehicle can be recorded by measuring equipment, and acceleration of gravity is definite value, is taken as 9.8m/s
2, circular curve radius then can obtain to designing unit's consulting.
Compared with prior art, under condition of raining described in the utility model, section, mountain highway sharp turn operation safety early warning plane has simple and compact for structure, rationally and volume is little, lightweight, be convenient to install, use easy and simple to handle, staff is without the need to carrying out the advantage of special training.
Accompanying drawing explanation
Fig. 1: operation safety early warning plane schematic diagram; Fig. 2: operation safety early warning plane workflow diagram; Fig. 3: operation safety early warning plane scheme of installation; Measure the amount of rainfall equipment-1, measurement speed of a motor vehicle equipment-2, measurement car weight equipment-3, variable information advices plate-4, single-chip microcomputer-5.
Embodiment
Below in conjunction with specific embodiment, section, mountain highway sharp turn operation safety early warning plane under condition of raining described in the utility model is described further, but protection domain of the present utility model is not limited to this.
Embodiment 1
Section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining, described early warning plane comprise all be connected with single-chip microcomputer 5 the equipment that measures the amount of rainfall 1, measure speed of a motor vehicle equipment 2, measure car weight equipment 3 and variable information advices plate 4; The described equipment 1 that measures the amount of rainfall is positioned at above trackside with measurement speed of a motor vehicle equipment 2; Described measurement car weight equipment 3 is positioned on road surface; Described variable information advices plate 4 be positioned at section, sharp turn before the top on road surface.Described single-chip microcomputer is MSP430 type single-chip microcomputer.
The described equipment 1 that measures the amount of rainfall is made up of rain sensor and collector two parts, and this rain sensor adopts SL1 type rain sensor.Rain sensor comprises the mouth that is filled with water, screen pack, top cylinder, joint bolt, magnet steel, dry type tongue spring tube, doffing, tipping bucket, stop screw, set nut, base, air level, levelling bolt.During work, rainwater is injected in metering tipping bucket through the screen pack of top cylinder, metering tipping bucket is made up of two tipping bucket rooms, is mechanical bistable structure, when a small room water receiving, another small room is in waiting status, when connect rainwater volume reaches predetermined value (3.14ml), because Action of Gravity Field makes it translate into side, be in waiting status simultaneously, another small room is in water receiving duty, so circulates.Meanwhile, tipping bucket sidewall is equipped with magnet, from the other scanning of tongue tube when it stirs with tipping bucket, make tongue tube break-make, namely the every overturning of tipping bucket once, and tongue tube is just connected and once sent a pulse signal, and often records pulsatile once signal, just represents the precipitation of 0.1mm.And data collector is stored, every one minute, data message is imported in single-chip microcomputer.
Described measurement speed of a motor vehicle equipment 2 is HT204 type radar meter.Radar sends radiowave, if run into obstacle in radio wave propagation process, then can be reflected back.In communication process, radiowave meets Doppler effect, by the change of frequency, can record vehicle actual travel speed, and its value be imported in single-chip microcomputer.
Described measurement car weight equipment 3 adopts automobile weight-measuring instrument.When vehicle is with the weighing table of certain speed through one fixed width, due to the effect of pressure, weighing unit meeting output voltage signal, the signal magnitude exported is directly proportional to the weight of weight, after weighing-up wave is sent to amplifier amplification, convert digital quantity to through analog to digital converter again, the size of this digital quantity is directly proportional to the size of signal, finally digital signal is imported in single-chip microcomputer.
During work, the utility model is respectively by automobile weight-measuring instrument, HT204 type radar meter, SL1 type rain sensor, measure vehicle weight, Vehicle Speed, rainfall amount, and by numerical value stored in single-chip microcomputer, in conjunction with seeking advice from the circular curve radius numerical value obtained to designing unit, through type (1), (2), when calculating vehicle with a certain speeds, the road adherence in the section, sharp turn that it will sail into and centrifugal force, and by data stored in single-chip microcomputer, the size of contrast adhesion and centrifugal force, if the former is less than the latter, then before sharp turn a distance variable information advices plate on the information warning of being correlated with to driver, if the former is greater than the latter, then do not need prompting, vehicle can actual travel speed pass through.
The computing formula that between rainfall amount and adhesion, the algorithm of relation adopts Ji Tianjian to propose:
F
1＝(0.9458-0.0057v-0.0007l
0.6134×α
-0.3133×q
1.4483)×N(1)
In formula: F
1---adhesion (N);
V---the speed of a motor vehicle (km/h);
L---domatic length (m);
α---resultant gradient;
Q---rainfall amount (mm/min);
N---vehicle weight (N).
Because mountain highway mostly is two-lane highway, domatic length is substantially fixing, therefore, can be defaulted as definite value, be taken as 11.25m; In addition, because the impact of change on adhesion of resultant gradient is small, therefore, also can be defaulted as definite value, be taken as 8.54% (superelevation 8%, longitudinal gradient 3%).And the speed of a motor vehicle, rainfall amount, vehicle weight can be recorded by measuring equipment.
The relation of circular curve radius, the speed of a motor vehicle and centrifugal force can be obtained by the computing formula of centrifugal force:
In formula: F
2---centrifugal force (N);
N---vehicle weight (N);
V---the speed of a motor vehicle (km/h);
G---acceleration of gravity (m/s
2);
R---circular curve radius (m).
Wherein, vehicle weight and the speed of a motor vehicle can be recorded by measuring equipment, and acceleration of gravity is definite value, is taken as 9.8m/s
2, circular curve radius then can obtain to designing unit's consulting.
Compared with prior art, under condition of raining described in the utility model, section, mountain highway sharp turn operation safety early warning plane has simple and compact for structure, rationally and volume is little, lightweight, be convenient to install, use easy and simple to handle, staff is without the need to carrying out the advantage of special training.
Claims (5)
1. section, mountain highway sharp turn operation safety early warning plane under a condition of raining, it is characterized in that, described early warning plane comprise all be connected with single-chip microcomputer (5) the equipment that measures the amount of rainfall (1), measure speed of a motor vehicle equipment (2), measure car weight equipment (3) and variable information advices plate (4); The described equipment that measures the amount of rainfall (1) and measurement speed of a motor vehicle equipment (2) are positioned at above trackside; Described measurement car weight equipment (3) is positioned on road surface; Described variable information advices plate (4) be positioned at section, sharp turn before the top on road surface.
2. section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining according to claim 1, is characterized in that, described single-chip microcomputer (5) is MSP430 type single-chip microcomputer.
3. section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining according to claim 1, it is characterized in that, the described equipment that measures the amount of rainfall (1) is made up of rain sensor and collector two parts, and this rain sensor adopts SL1 type rain sensor.
4. section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining according to claim 1, is characterized in that, described measurement speed of a motor vehicle equipment (2) is HT204 type radar meter.
5. section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining according to claim 1, is characterized in that, described measurement car weight equipment (3) adopts automobile weight-measuring instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520769151.3U CN204946358U (en) | 2015-09-30 | 2015-09-30 | Section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520769151.3U CN204946358U (en) | 2015-09-30 | 2015-09-30 | Section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining |
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| Publication Number | Publication Date |
|---|---|
| CN204946358U true CN204946358U (en) | 2016-01-06 |
Family
ID=55013763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520769151.3U Expired - Fee Related CN204946358U (en) | 2015-09-30 | 2015-09-30 | Section, mountain highway sharp turn operation safety early warning plane under a kind of condition of raining |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111292528A (en) * | 2020-01-22 | 2020-06-16 | 长安大学 | Method for early warning overhigh bending speed of large truck |
| CN112788232A (en) * | 2020-12-28 | 2021-05-11 | 合肥信杰科技发展有限公司 | Camera capable of automatically adjusting working mode according to precipitation change |
-
2015
- 2015-09-30 CN CN201520769151.3U patent/CN204946358U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111292528A (en) * | 2020-01-22 | 2020-06-16 | 长安大学 | Method for early warning overhigh bending speed of large truck |
| CN111292528B (en) * | 2020-01-22 | 2022-04-05 | 长安大学 | Method for early warning overhigh bending speed of large truck |
| CN112788232A (en) * | 2020-12-28 | 2021-05-11 | 合肥信杰科技发展有限公司 | Camera capable of automatically adjusting working mode according to precipitation change |
| CN112788232B (en) * | 2020-12-28 | 2022-11-22 | 合肥信杰科技发展有限公司 | Camera capable of automatically adjusting working mode according to precipitation change |
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| 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: 20160106 Termination date: 20180930 |