CN203485914U - Automobile side turn prevention early warning system based on air spring - Google Patents
Automobile side turn prevention early warning system based on air spring Download PDFInfo
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- CN203485914U CN203485914U CN201320624608.2U CN201320624608U CN203485914U CN 203485914 U CN203485914 U CN 203485914U CN 201320624608 U CN201320624608 U CN 201320624608U CN 203485914 U CN203485914 U CN 203485914U
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- air spring
- lateral acceleration
- microprocessor
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Abstract
The utility model discloses an automobile side turn prevention early warning system based on an air spring. A sensor is used for detecting gas pressure in the air spring and the lateral acceleration in the running process of an automobile in real time; the sensor sends data detected in real time into a microprocessor; the microprocessor analyzes and processes the data and sends processed information to a display screen for display; the microprocessor also makes a comparison between an obtained transverse load transfer rate and a preset threshold value of the transverse load transfer rate and a comparison between an obtained lateral acceleration value and a preset threshold value of the lateral acceleration value; when the obtained transverse load transfer rate and the obtained lateral acceleration value are larger than the corresponding preset threshold values, the microprocessor controls an alarm device to give an alarm. According to the automobile side turn prevention early warning system based on the air spring, the gas pressure value in the air spring and the lateral acceleration value of the automobile in the running process are detected, the detected data are subjected to a comparison through the microprocessor, and the alarm is given when the preset threshold values are exceeded; the lateral acceleration is used for correcting the transverse load transfer rate, so that a false alarm and an untimely early alarm caused by interference in a judgment index of the gas pressure value in the air spring under a condition similar to the condition that the preset threshold values are exceeded under the actual running condition of the automobile are prevented.
Description
Technical field
The utility model belongs to vehicle active safety field, is specifically related to a kind of car for guarding against side turned over forewarn system based on air bellow.
Background technology
Recent years, along with increasing sharply of automobile pollution, road traffic accident occurs again and again, has caused a large amount of personal casualty and economic loss.In numerous road traffic accidents, vehicle side turning is a kind of common form, and according to rough Statistics, vehicle side turning accident has become the serious car accedent that is only second to head-on crash.The generation of rollover will cause serious consequence, so improve the roll stability of automobile, with what avoid rollover accident, be very necessary and important.
Air bellow has change stiffness characteristics, easily obtains lower eigentone, can improve ride of vehicle; Its self-checking device, can make the travelling comfort of automobile and the condition of getting on or off the bus improve; And the long service life of air bellow, quality is little.So air bellow obtains applying more and more widely on business automobile, bus, guideway vehicle etc.The utility model, mainly for the vehicle that contains air bellow, can conveniently increase this rollover forewarn system on the basis of this vehicle.This system adopts measures lateral acceleration and two values of the transverse load rate of transform as the condition of evaluating automobile roll simultaneously, makes result of a measurement more accurate, and reliability is stronger.
Summary of the invention
The technical problems to be solved in the utility model: the utility model object is to provide a kind of car for guarding against side turned over forewarn system based on air bellow, and its accuracy is strong, easy for installation, expense is low, to overcome the deficiencies in the prior art.
Technical solutions of the utility model:
A car for guarding against side turned over forewarn system based on air bellow, it comprises microprocessor, is connected with left side adapt air spring pressure sensor, right side air bellow sensor, lateral acceleration sensor and warning device on microprocessing unit.
Left side adapt air spring pressure sensor is connected with left side air bellow; Right side air bellow sensor is connected with right side air bellow.
Warning device comprises annunciator, safety lamp, warning light and telltale.
The present invention is directed to experiment vehicle on the basis of experimental study, during according to the critical rollover of vehicle, vehicle both sides adapt air spring pressure changes and lateral acceleration feature, use adapt air spring pressure sensor and lateral acceleration sensor combined with intelligent controller to the detection of turning on one's side of the vehicle in travelling, when vehicle has rollover trend, chaufeur is carried out to sound and light alarm, make chaufeur take the measures such as Reduced Speed Now to avoid the generation of rollover accident, or provide rollover early warning signal for later Anti-side-turning device.
Specifically, main basis for estimation is for utilizing transverse load transfer case to judge vehicle rollover, the warning algorithm of turning on one's side, and the warning algorithm of turning on one's side is estimated transverse load transfer case and the transverse load rate of transform by the ratio of the adapt air spring pressure of vehicle both sides.
Transverse load rate of transform LLTR(Lateral Load Transfer Rate) be defined as: the difference of the vertical load on the wheel of vehicle both sides and the ratio of vertical load sum, be shown below:
In formula, Fli is the vertical load on the tire of the left side;
Fri is the vertical load on cincture tire;
I represents the position of axletree;
N represents total axletree number.
In addition,, because can run into the bad situation of some roads in running car, for example during the uneven and slope of road, the transverse load rate of transform of automobile can be greatly affected.Consider this situation, so on the basis that native system detects at adapt air spring pressure sensor, also use the side direction of lateral acceleration Sensor monitoring vehicle to accelerate, reaffirm whether vehicle has rollover trend.Side turning alarming device with respect to other is all generally only by the transverse load rate of transform or value of lateral acceleration, to be used as the factor of turning on one's side, and the method for native system is more accurately more reliable.
Microprocessor judges the motoring condition of vehicle by obtaining the data of Sensor monitoring, sensor is sent to microprocessing unit by the data of Real-Time Monitoring, microprocessor is brought these data to set in advance in the program of microprocessing unit inside into, calculate the transverse load rate of transform and compare with the rollover threshold value being preset in microprocessing unit program together with lateral acceleration value, if be less than rollover threshold value, warning device is not reported to the police; If be greater than rollover threshold value, show that vehicle has rollover trend, warning device starts to report to the police.
The utility model beneficial effect: method of the present invention accurately and reliably, institute's employing components and parts technology maturation, volume is little; Functional reliability is high, without existing vehicle is carried out to large structural modification, and, for the driving safety that improves vehicle, there is significant effect.
accompanying drawing explanation:
Fig. 1 is the utility model cross-sectional structure schematic diagram.
1-lateral acceleration sensor, 2-right side air bellow, 3-right side adapt air spring pressure sensor, 4-left side air bellow sensor, 5-left side air bellow, 6-safety lamp, 7-warning light, 8-annunciator, 9-telltale, 10-microprocessor
the specific embodiment:
As figure, car for guarding against side turned over forewarn system based on air bellow comprise microprocessor 10 and be connected with microprocessor 10, for detection of the lateral acceleration sensor 1 of vehicle lateral acceleration, left side air bellow sensor detects the adapt air spring pressure value of left side air bellow 5 and passes to microprocessor 10, and right side air bellow sensor detects the adapt air spring pressure value of right side air bellow 5 and passes to microprocessor 10.After microprocessor 10 receives signal, these data are brought into and set in advance in the program of microprocessing unit inside, calculate the transverse load rate of transform and compare with the rollover threshold value being preset in microprocessing unit program together with lateral acceleration value, if be less than rollover threshold value, warning device is not reported to the police, and safety lamp 6 is lighted and is rendered as green; If be greater than rollover threshold value, show that vehicle has rollover trend, it is that safety lamp 6 cuts out that warning device starts to report to the police, warning light 7 is lighted and is rendered as redness, annunciator 8 for loudspeaker occur " droplet " alarm sound.Microprocessor 10 is real-time transmitted to telltale 9 by the data result calculating and shows in real time.
The microprocessor 10 that the utility model adopts is micro controller system, can directly choose.
Right side adapt air spring pressure sensor 3, left side air bellow sensor 4, lateral acceleration sensor can directly be chosen in market.
Claims (3)
1. the car for guarding against side turned over forewarn system based on air bellow, it comprises microprocessor (10), it is characterized in that: on microprocessing unit (10), be connected with left side adapt air spring pressure sensor (4), right side air bellow sensor (3), lateral acceleration sensor (1) and warning device.
2. the car for guarding against side turned over forewarn system based on air bellow according to claim 1, is characterized in that: left side adapt air spring pressure sensor (4) is connected with left side air bellow (5); Right side air bellow sensor (3) is connected with right side air bellow (2).
3. the car for guarding against side turned over forewarn system based on air bellow according to claim 1, is characterized in that: warning device comprises annunciator (8), safety lamp (6), warning light (7) and telltale (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320624608.2U CN203485914U (en) | 2013-10-11 | 2013-10-11 | Automobile side turn prevention early warning system based on air spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320624608.2U CN203485914U (en) | 2013-10-11 | 2013-10-11 | Automobile side turn prevention early warning system based on air spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203485914U true CN203485914U (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320624608.2U Expired - Fee Related CN203485914U (en) | 2013-10-11 | 2013-10-11 | Automobile side turn prevention early warning system based on air spring |
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| CN (1) | CN203485914U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108680364A (en) * | 2018-03-29 | 2018-10-19 | 南京航空航天大学 | A kind of vehicle side turning evaluation index and evaluation method |
-
2013
- 2013-10-11 CN CN201320624608.2U patent/CN203485914U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN108680364A (en) * | 2018-03-29 | 2018-10-19 | 南京航空航天大学 | A kind of vehicle side turning evaluation index and evaluation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20151011 |
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| EXPY | Termination of patent right or utility model |