CN1569517A - Vehicle acceleration or deceleration/brake grading display method using sensor and apparatus therefor - Google Patents
Vehicle acceleration or deceleration/brake grading display method using sensor and apparatus therefor Download PDFInfo
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- CN1569517A CN1569517A CN 200410035193 CN200410035193A CN1569517A CN 1569517 A CN1569517 A CN 1569517A CN 200410035193 CN200410035193 CN 200410035193 CN 200410035193 A CN200410035193 A CN 200410035193A CN 1569517 A CN1569517 A CN 1569517A
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Abstract
The invention relates to a method and device for using one accelerator sensor to realize the acceleration, deceleration and brake. The character lies in: there arranges a acceleration sensor on the car, using the sensitive character of the sensor to speed change, the forwards acceleration or brake/deceleration backwards deceleration are processed with simple circuit, displays the forwards acceleration and carries on grade display to the backwards acceleration, and forms logic ''or'' relation to the car brake signal. The device includes a 2g range acceleration sensor and signal processing circuits, which are used to drive the forwards acceleration monitor and the grade brake/deceleration monitor.
Description
Technical field
The present invention relates to acceleration pick-up of a kind of usefulness and realize that vehicle quickens or deceleration/brake classification display method and device, belongs to sensor technology and application.
Background technology
Sensing technology, information processing and information transfer are called information three big supporting technologys.Sensing technology is the new and high technology that the world today develops rapidly, the subject face width that relates to, wide application.The main research information of sensing technology obtains, changes and carries out relevant sensor (comprising sensor and actr) and system, sensor owing to its to external world the sensitivity characteristic of situation have and broad application background.Inertial sensor is an important class in the sensor, is the end instr of perceive motion state, as the acceleration pick-up of inertia device extremely important purposes is arranged in the sign to object moving state.
Automobile is familiar with by people the demand of acceleration pick-up just gradually as a kind of object of advancing.At present, the Domestic Automotive Industry growth momentum is swift and violent, has become one of the backbone industry in many cities, and simultaneously, automobile is also progressively come into family as a kind of high-priced consumer durable, drives the fan and also day by day increases.As everyone knows, all automobiles all have average speed indicator, make the driver can understand the speed of a motor vehicle of oneself constantly, and average speed indicator is an indispensable part in the auto meter.But the accelerometer of vehicle does not become the part of auto meter, because the parameter that must know when acceleration/accel is not driving, but many people that chase fashion are concerned about the acceleration capability of own vehicle very much when driving, if can when quickening, experience the acceleration situation of vehicle intuitively by corresponding gauge panel or other read out instrument, for Ai Che gang, will obtain a kind of pleasant sensation.As adopt acceleration pick-up that the perceptual performance of acceleration/accel is made the relevant acceleration indicating system, can satisfy Ai Che family therefrom obtains pleasant sensation when driving demand.On the other hand, the motorist also can (mark like an elephant employing excessively high speed red line on speed meter in the initiatively undue speed-raising of restriction oneself by understanding the vehicle acceleration situation at any time, excessive acceleration range is warned with red line showing), to driving with caution and the safe driving aspect plays a positive role.
At present, the braking automobile lamp system is to link to each other with the brake system.Chaufeur one touches on the brake, and the braking signal switch of automobile tail promptly is opened, and stoplight stop lamp is just lighted at once, the prompting back vehicle, and front truck is brake deceleration.But in fact, in the middle of vehicle ', under certain conditions, chaufeur does not touch on the brake, but because the cause of road and vehicle itself or even have an accident and cause the instantaneous reduction of the speed of a motor vehicle, at this moment, traditional stoplight stop lamp system can not make any reaction.Back vehicle can not obtain good information like this, causes appearance pernicious traffic accident such as knock into the back continuously.If in the time of stoplight stop lamp being linked to each other with the acceleration transducer signals system again, because this sensor is to the perception of mobile velocity variations, it can be according to car retardation situation output signal, and when reaching certain preset switches point, the driving stoplight stop lamp is lighted, thereby the stoplight stop lamp system is become not only rely on driver's operation, simultaneously the intelligent braking lamp system that also whether automatic differentiation lights according to the car retardation situation.Degree of will speed up signal and brake signal are the relations of logical "or", can not have influence on the normal operation of original brake system like this, and promptly lamp also can be bright during brake.But the automatic Presentation Function of deceleration that increases will improve the security information that vehicle rearwards provides greatly on the basis of original stoplight stop lamp.In a word, install the intelligent deceleration caution system of this kind additional and will provide more guarantee for safe driving.
Chaufeur wishes to instruct the degree of front truck brake degree and front truck actual deceleration to take the corresponding brake measure of appropriate degree most after bright according to the preceding vehicle stoplight stop lamp.So both can keep enough distance to guarantee not knock into the back, have and to avoid brake too drastic and have influence on its back vehicle again with the front truck that slows down.Only see that the front stoplight stop lamp is bright, can not obtain the practical extent that preceding vehicle is slowed down sometimes.Often chaufeur is to come these further information of perception according to the transient change of two spacings.But when extremely not enriching, night or chaufeur experience be difficult to sometimes more accurately judge.Can use same acceleration pick-up, can when giving it the gun, vehicle show acceleration/accel, and can measure degree of deceleration automatically, and by with the deceleration classification thresholds that sets in advance relatively drive can classification display high position brake/deceleration lamp, make the chaufeur of back obtain the practical extent of front truck brake/deceleration and take suitable corresponding brake.Such demonstration can be used high-mount stop lamp segmentation to show and realize, also can classification display brightness or method such as classification flicker realize that the array of display shape that can certainly change lamp realizes.And kept the original function of normal low level brake taillight.Below just constitute main design of the present invention.
Summary of the invention
The objective of the invention is to by only realizing the method that vehicle quickens or deceleration/brake classification caution shows with an acceleration pick-up.The enforcement of automatic detection of a kind of vehicle acceleration that provides and the sensor of deceleration/decel and display system has been played certain supplementary sum raising effect to the instrument indicating system that has vehicle now.Demonstration to forward acceleration can provide safe driving according to also increasing the enjoyment of driving for chaufeur.The more important thing is that this invention can use same sensor to provide the caution according to the degree of deceleration classification to show the automatic detection of car retardation (no matter do not have not initiatively brake) to the back vehicle, to avoiding the very big effect of playing of rear-end collision.The present invention has broken through traditional stoplight stop lamp system must provide bigger help to traffic safety by driver-operated limitation.
In order to reach above purpose, technical solution of the present invention is:
1. the present invention at first provides a kind of vehicle acceleration proving installation, but it comprises sensor and the acceleration signal treatment circuit and the display driver circuit of a positive negative acceleration of perception, and one is quickened indicating device and the automatic classification display device that slows down.Wherein acceleration pick-up is its core component.This sensor can be made a response to the acceleration/accel situation of vehicle, and according to the difference of vehicle acceleration, export corresponding signal, this sensor adds (subtracting) speed testing system by processing and vehicle of display unit formation of interface driving circuit, can reflect current the adding of vehicle (subtracting) speed intuitively, definitely.Be applicable to that acceleration pick-up of the present invention is about 2g according to the scope of the positive negative acceleration of vehicle, sensor itself has been mature technology, mainly contains capacitance acceleration sensor and piezoresistive acceleration sensor.ADXL series sensor as the production of U.S. ADI company.The acceleration sensitive electric capacity that adopts the silicon micro mechanical technology to form is arranged in the sensor, and under the acceleration/accel effect, the capacitor plate spacing changes and causes capacitance variation, forms the signal of output voltage with acceleration change after the interface circuit conversion.Also can adopt the piezoresistive acceleration sensor of producing as U.S. ENDEVCO company.The sensor mass piece produces force of inertia under the acceleration/accel effect, produce stress on the mechanics beam that causes linking to each other with mass, and by the piezoresistive effect of silicon, each strain resistor changes, and produces electric signal by the output of electric bridge difference.
2. characteristics of the present invention are to adopt the signal of an acceleration pick-up to reach two kinds of display effects.One is the real-time demonstration of vehicle forward acceleration, selects appropriate display parts roughly (as adopting column LCDs or light-emitting diode level instruction simulation telltale etc.) or the accurate accekeration that shows current vehicle for use (as adopting pointer-type or digital gauge outfit etc.).What sensor signal was amplified use is the INA125 instrument amplifier that U.S. BB company produces, and it carries accurate voltage output.It two is the deceleration classification suggestion device of vehicle, can indicator lamp or other eye-catching display unit is installed and be controlled by acceleration pick-up at rear view of vehicle.When car retardation, it is luminous to control the deceleration indicator lamp by signal output, thereby reach the effect of caution back vehicle, this and chaufeur touch on the brake and light stoplight stop lamp essential distinction is arranged, the deceleration indicator lamp of this moment is controlled by acceleration pick-up perception degree of deceleration fully, irrelevant with driving behavior, be intelligent deceleration Warning light.This automatic deceleration measurement signal can and former car on brake signal between form " or " logical relation, so be under a kind of non-brake that does not disturb under the former brake signal prerequisite, to measure the bright alarm function that waits that slows down to strengthen.This restriction signal shows the rank of slowing down through measuring the degree of brake/deceleration with the identification relatively automatically of presetting the deceleration/decel threshold value.By experiment, can determine output voltage values, in circuit,, compare by comparator, produce other drive signal of corresponding retarding stage with sensor output voltage with presetting such deceleration rank voltage at difference deceleration rank lower sensor.Can make a special high-order back light and show such deceleration rank (can be magnitude or multistage).Other demonstration of level can be adopted various ways, as utilizes the back light segmentation of horizontal stripe form height position to show rank, or distinguishes rank by the normal bright of lamp or flicker, or adopts the difference of different shape back light array distribution to show rank or the like.
3. because the pace of change of real time acceleration and deceleration/decel may surpass the recognition speed of human eye, so when acceleration sensor outputs signals is handled, will adopt certain filtering and prolongation demonstration time to be convenient to read and the sight identification.This filtering and prolongation demonstration are circuit common in this area.The power supply that system can adopt vehicle itself to provide also can adopt the powered battery that carries in the part of low-power consumption.
4. described deceleration classification display system is after sensor detects degree of deceleration, automatically compare the back with the deceleration grade threshold that sets in advance and produce the degree of deceleration graded signal, drive the back light telltale of corresponding degree of deceleration, make demonstration have degree of deceleration information.
Described deceleration demonstration is divided into high level deceleration display lamp driving circuit, minimum restriction signal degree display lamp driving circuit and former stoplight stop lamp and driving circuit; Wherein minimum restriction signal and initiatively brake and form logical "or" circuit between the electric signal.(seeing Fig. 3, Fig. 4 for details)
Description of drawings
Fig. 1 takes into account the schematic diagram of deceleration classification caution display system with the vehicle acceleration demonstration of an acceleration pick-up for the present invention.
The simulated diagram that Fig. 2 installs on vehicle for the corresponding system of schematic diagram shown in Figure 1.
Fig. 3 is the signal processing structure block diagram in detail of system shown in Figure 2.
Automatically compare with the deceleration grade threshold that presets when Fig. 4 shows for slowing down and produce degree of deceleration graded signal schematic diagram.
The specific embodiment
At first, see also attached Fig. 1 and 2.Native system comprises an acceleration pick-up, is fixedly mounted on any position of standing same acceleration and deceleration motion process with vehicle on the car, near the built-in high-mount stop lamp of preceding instrument desk or backstage.The sensor signal Processing Interface can be in the same place with acceleration/accel with parts such as lamp drive circuits.On the telltale in the place that the instrument desk chaufeur was easily seen before the forward acceleration display drive signals can be connected to and be installed in.As telltale is a pointer analog meter.Another road signal forms intelligent deceleration classification caution and shows through producing corresponding classification display signal with the degree of deceleration graded signal that presets after relatively, being connected to after driving circuit is handled on the three-dimensional deceleration Warning light array of car rear portion.As long as when sense deceleration reached minimum braking effect, this minimum deceleration rank detection signal also was connected into the relation of logical "or" through between signals such as driving circuit and former car brake, can help former car stoplight stop lamp also bright when not touching on the brake but enough decelerations are arranged.
Following implementation detail and process with reference to Fig. 3 introducing system.Add/actual range of deceleration/decel according to vehicle, should select the acceleration pick-up of 2g left and right sides range.Provide working power for sensor after to Vehicle Power voltage stabilizing and filtering.In order to reduce the influence of acceleration pick-up zero creep to vehicle acceleration test number accuracy, can by the circuit setting make vehicle when the each retrofire to the acceleration pick-up processing of making zero.Sensor is vdc output, is divided into two-way after signal amplifies adjustment.One tunnel acceleration/accel degree through driver stage circuit rear drive analog level column telltale demonstration vehicle.For reminding chaufeur not want flat-out acceleration, can make the above output of 0.3g shown in red, below be green.Another road signal shows for slowing down provides signal.Signal compares with a plurality of deceleration classification thresholds voltages that set in advance earlier, and comparator output result is the retarding stage level signal.This signal goes to light the appropriate section of corresponding degree of deceleration rank display lamp linear array through the driver stage circuit.As establish two-stage relatively, threshold value is respectively-0.3g and-0.6g.Do not surpass lowest threshold as degree of deceleration, then do not light the deceleration lamp, brake etc. only can be lighted when brake is arranged.Make vehicle when certain negative acceleration value is arranged, just open intelligent deceleration Warning light like this, and can when car speed edges down, just not light brake lamp again and again, cause for the back car and bring unnecessary interference.Between the two-stage threshold value, then only light low deceleration display part as degree of deceleration, this part output is to couple together with the relation of brake signal according to logical "or", all general stoplight stop lamp is worked.If relatively the back produces the signal that exceeds senior threshold value, then outside normal deceleration lamp part is bright, show that the signal lamp part of fiercely deceleration/brake is also light.Divide the situation of multistage demonstration to analogize for slowing down.Fig. 4 has provided the schematic circuit diagram that brake signal branch two-stage is relatively discerned.Acceleration sensor outputs signals compares through comparator with the tapping voltage that sets in advance after amplifying, and surpasses respective threshold as signal and then exports high level, removes to drive the display lamp of correspondent section through driving amplifier.On the contrary, the comparator output low level of signal out of reach threshold value, correspondent section demonstration etc. is not driven.
The acceleration/accel read out instrument that is used to show value of vehicle acceleration generally places the front portion of vehicle, and is close with all appts gauge outfit position in the operator's compartment, is convenient to chaufeur perception or reading.The method that shows has multiple, can adopt reading type indicating devices such as pointer header, digital lcd read-out, makes chaufeur can know concrete accekeration at present easily; Also can adopt acceleration/accel telltale intuitively such as light-emitting diode level indicator, colored fluid column, chaufeur need not to know concrete accekeration, but experiences the situation that vehicle quickens from the diode indicating device of flicker or the colored fluid column of fluctuating.
Be used to point out the Warning light of car retardation state generally to be placed on the eye-catching place of vehicle afterbody, make back car chaufeur can notice the deceleration regime of front truck easily, luminous component can be selected filament lamp or light-emitting diode for use.
Claims (8)
1. only realize that with an acceleration pick-up vehicle quickens or the method for deceleration/brake classification display for one kind, it is characterized in that on vehicle, placing the sensor that a perception is quickened or slowed down, the sensitivity characteristic of utilizing sensor that the vehicle ' medium velocity is changed, with vehicle forward acceleration/accel or deceleration/brake signal after processing of circuit, the degree that respectively the vehicle forward acceleration is shown and produce chest-to-back acceleration during to brake/decelerations produces the classification processing, and formation between former brake signal " or " logical relation.
2. realize that by acceleration pick-up of described a kind of the usefulness of claim 1 vehicle quickens or the method for deceleration/brake classification display, it is characterized in that relation with logical "or" that brake signal forms, be under a kind of non-brake that does not disturb under the former brake signal prerequisite, restriction signal through with preset the deceleration/decel threshold ratio discern more automatically the measurement brake/deceleration degree.
3. realize that by acceleration pick-up of described usefulness of claim 1 vehicle quickens or the device of deceleration/brake classification display, it is characterized in that it by a positive and negative acceleration pick-up of perception that is fixed on the vehicle body, forward acceleration degree telltale and deceleration classification display system form in the acceleration signal treatment circuit that is attached thereto and display driver circuit and the car linking to each other with driving circuit; The positive and negative acceleration pick-up range of described perception is 2g.
4. realize that by acceleration pick-up of described usefulness of claim 3 vehicle quickens or the device of deceleration/brake classification display, it is characterized in that described acceleration pick-up is capacitance acceleration sensor or piezoresistive acceleration sensor.
5. realize that by acceleration pick-up of described usefulness of claim 3 vehicle quickens or the device of deceleration/brake classification display, it is characterized in that described deceleration classification display system is after sensor detects degree of deceleration, automatically compare the back with the deceleration grade threshold that sets in advance and produce the degree of deceleration graded signal, drive the back light telltale of corresponding degree of deceleration, make demonstration have degree of deceleration information.
6. realize that by acceleration pick-up of described usefulness of claim 5 vehicle quickens or the device of deceleration/brake classification display, it is characterized in that described deceleration demonstration is divided into high level deceleration display lamp driving circuit, minimum restriction signal degree display lamp driving circuit and former stoplight stop lamp and driving circuit; Wherein minimum restriction signal and initiatively brake and form logical "or" circuit between the electric signal.
By claim 3,5 or acceleration pick-up of 6 described usefulness realize that vehicle quickens or the device of deceleration/brake classification display, it is characterized in that the rank demonstration of degree of deceleration or utilize the former lamp classification display in horizontal stripe form height position, or by the normal bright of lamp or flicker differentiation, or the difference that adopts various back lights displays to distribute shows rank.
8. realize that by acceleration pick-up of described usefulness of claim 3 vehicle quickens or the device of deceleration/brake classification display, it is characterized in that described acceleration/accel shows or employing column LCDs or the demonstration of light-emitting diode level instruction simulation, or adopt pointer-type or digital display.
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| CNB2004100351930A CN100382991C (en) | 2004-04-30 | 2004-04-30 | Vehicle acceleration or deceleration/brake grading display method using sensor and apparatus therefor |
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| CNB2004100351930A CN100382991C (en) | 2004-04-30 | 2004-04-30 | Vehicle acceleration or deceleration/brake grading display method using sensor and apparatus therefor |
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| CN1569517A true CN1569517A (en) | 2005-01-26 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101428583A (en) * | 2008-12-11 | 2009-05-13 | 龚立新 | Dynamic state display apparatus of vehicle and display method |
| CN101007520B (en) * | 2006-01-23 | 2011-04-20 | 周亦武 | Automobile acceleration rear indicator |
| CN102997152A (en) * | 2011-09-07 | 2013-03-27 | 斯蒂芬·亚当斯 | LED device with power removal detection and method for using the same |
| CN103381806A (en) * | 2013-08-13 | 2013-11-06 | 北京汽车股份有限公司 | Method and device for warning of braking of vehicle and vehicle |
| CN104228886A (en) * | 2014-09-26 | 2014-12-24 | 中国科学院上海高等研究院 | Measurement method for daily operation state of urban rail transit vehicle |
| CN105584408A (en) * | 2014-10-22 | 2016-05-18 | 陕西重型汽车有限公司 | Speed reduction alarm brake lamp control system, vehicle control system and vehicle |
| CN108944657A (en) * | 2018-06-15 | 2018-12-07 | 深圳市曹布斯科技有限公司 | A kind of anti-reminding method to knock into the back and rear-end device |
| CN109795405A (en) * | 2019-03-07 | 2019-05-24 | 董博 | A kind of driving status warning system based on vehicle airbag control unit |
| CN109835246A (en) * | 2019-03-07 | 2019-06-04 | 董博 | A kind of vehicle Integrative security system based on vehicle airbag control unit |
| CN110228486A (en) * | 2018-04-10 | 2019-09-13 | 蔚来汽车有限公司 | Promote the method, apparatus of driving behavior and the vehicle comprising the device |
| CN110789451A (en) * | 2018-08-02 | 2020-02-14 | 上海汽车集团股份有限公司 | Method and system for interaction between vehicle and outside |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2801548B1 (en) * | 1999-11-25 | 2002-02-15 | D E F I | INTENSIVE BRAKING LIGHT WARNING DEVICE FOR MOUNTING AT THE REAR OF MOTOR VEHICLES |
| US6417767B1 (en) * | 2000-03-27 | 2002-07-09 | Craig D. Carlson | Device and system for indicating rapid deceleration in vehicles |
| CN2516393Y (en) * | 2002-01-18 | 2002-10-16 | 高凤岗 | High brake lamp on car for preventing kissed by back car |
| US20040032324A1 (en) * | 2002-08-14 | 2004-02-19 | Omron Corporation | Brake light controller |
-
2004
- 2004-04-30 CN CNB2004100351930A patent/CN100382991C/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007520B (en) * | 2006-01-23 | 2011-04-20 | 周亦武 | Automobile acceleration rear indicator |
| CN101428583A (en) * | 2008-12-11 | 2009-05-13 | 龚立新 | Dynamic state display apparatus of vehicle and display method |
| CN101428583B (en) * | 2008-12-11 | 2014-02-05 | 龚立新 | Dynamic state display apparatus of vehicle and display method |
| CN102997152A (en) * | 2011-09-07 | 2013-03-27 | 斯蒂芬·亚当斯 | LED device with power removal detection and method for using the same |
| CN103381806A (en) * | 2013-08-13 | 2013-11-06 | 北京汽车股份有限公司 | Method and device for warning of braking of vehicle and vehicle |
| CN104228886A (en) * | 2014-09-26 | 2014-12-24 | 中国科学院上海高等研究院 | Measurement method for daily operation state of urban rail transit vehicle |
| CN105584408A (en) * | 2014-10-22 | 2016-05-18 | 陕西重型汽车有限公司 | Speed reduction alarm brake lamp control system, vehicle control system and vehicle |
| CN110228486A (en) * | 2018-04-10 | 2019-09-13 | 蔚来汽车有限公司 | Promote the method, apparatus of driving behavior and the vehicle comprising the device |
| CN108944657A (en) * | 2018-06-15 | 2018-12-07 | 深圳市曹布斯科技有限公司 | A kind of anti-reminding method to knock into the back and rear-end device |
| CN110789451A (en) * | 2018-08-02 | 2020-02-14 | 上海汽车集团股份有限公司 | Method and system for interaction between vehicle and outside |
| CN109795405A (en) * | 2019-03-07 | 2019-05-24 | 董博 | A kind of driving status warning system based on vehicle airbag control unit |
| CN109835246A (en) * | 2019-03-07 | 2019-06-04 | 董博 | A kind of vehicle Integrative security system based on vehicle airbag control unit |
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| CN100382991C (en) | 2008-04-23 |
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