DE3217930A1 - Water-smoothness sensor - Google Patents
Water-smoothness sensorInfo
- Publication number
- DE3217930A1 DE3217930A1 DE19823217930 DE3217930A DE3217930A1 DE 3217930 A1 DE3217930 A1 DE 3217930A1 DE 19823217930 DE19823217930 DE 19823217930 DE 3217930 A DE3217930 A DE 3217930A DE 3217930 A1 DE3217930 A1 DE 3217930A1
- Authority
- DE
- Germany
- Prior art keywords
- water
- tire
- sensor
- speed
- amount
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
Abstract
Description
Anlage zur Patentanmeldung für einen Attachment to the patent application for a
WASSERGL ÄTTE-SENSOR 1. Aufgabenstellung Das Phänomen 'tWasserglätte" stellt eines der größten Sicherheitsrisiken im Straßenverkehr dar, zumal viele Fahrer auf (regen-)nasser Straße auch bei höheren Geschwindigkeiten die noch vorhandene Sodenhaftung der Reifen überschätzen. WATER SMOOTH SENSOR 1. Task The phenomenon 'tWater smoothness' represents one of the greatest safety risks in road traffic, especially since many drivers on (rain-) wet roads even at higher speeds the existing one Overestimate tire adhesion.
Deshalb wäre für den Fahrer im Wageninneren eine Anzeige von höchster Wichtigkeit, die ihn bei Fahrten auf nasser Straße davor warnt, eine zulässige Grenzgeschwindigkeit zu überschreiten, um das sonst auftretende Wasserglätte-Phänomen zu vermeiden.Therefore, a display for the driver inside the vehicle would be of the highest quality Importance that warns him of this when driving on a wet road, a permissible limit speed to be exceeded in order to avoid the otherwise occurring water slippery phenomenon.
Der Erfindung liegt eben diese Aufgabe zugrunde, Wasserglätte beim fahren meUbar zu machen und dem Fahrer als warnende Information zu übermitteln.The invention is based on this object, water smoothness when To make driving understandable and to convey it to the driver as warning information.
Entsprechende Sensoren sind dem hier einreicheriden Ettinder noch nicht bekannt.Corresponding sensors are still available for the Ettinder submitted here not known.
2. Lösung Wasserglätte oder "Aqua-Planing" tritt auf, wenp ein rollender Fahrzeugreifen die Wassermenge auf der Straße nicht mehr völlig verdrängen kann und sich ein Wasserspalt zwischen Reifen und Straßenbelag schiebt.2. Solution Slippery water or "aqua-planing" occurs when there is a rolling Vehicle tires can no longer completely displace the amount of water on the road and there is a gap between the tires and the road surface.
Der Reifen "schwimmt" dann geradezu auf einer Wasserschicht, verliert die Haftung und das Fahrzeug kann so gut wie nicht mehr gesteuert werden.The tire then virtually "floats" on a layer of water and loses it the liability and the vehicle can hardly be steered any more.
Haupteinflußfaktoren auf das Entstehen von Wasserglätte sind a) die Höhe der Wasserschicht auf der Fahrbahn, sowie b) die Fahrgeschwindigkeit.The main influencing factors on the occurrence of slippery water are a) the Height of the water layer on the road, as well as b) the driving speed.
Die Faktoren a) und b) resultieren zu der Menge des pro Zeiteinheit vom Reifen zu verdrängenden Wassers, dessen maximale Verdrängungsleistung wiederum vom Reifenprofil mitbestimmt wird.The factors a) and b) result in the amount of per unit of time water to be displaced by the tire, its maximum displacement capacity is co-determined by the tire profile.
Ansatzpunkt für den hier beschriebenen Wasserglätte-Sensor ist die während des Fahrens von einem Reifen (speziell vom Vorderreifen) zu verdrängende Wassermenge, die einmal nach. den Seiten (1), zum anderen nach hinten (2) "waggespritzt" wird (Abb.1).The starting point for the water smoothness sensor described here is to be displaced by a tire (especially the front tire) while driving Amount of water that once after. the sides (1), on the other hand to the rear (2) "dare-sprayed" becomes (Fig.1).
Wasserhöhe und Fahrgeschwindigkeit bestimmen den Impuls (Wassermenge mal Geschwindigkeit) des verdrängten Wassers.The water level and driving speed determine the impulse (amount of water times the speed) of the displaced water.
Nimmt man zum Beispiel das vom Rad oder Reifen nach-hinten weggespritzte Wasser (Abb. 2) als Meßstelle (eine Messung an den Seiten wäre ebenso denkbar), so wird dessen Menge(1) und Geschwindigkeit (2) zu einem Vergleichswert für den aktuellen Aqua-Planing-Effakt.Take, for example, that which was sprayed backwards from the wheel or tire Water (Fig. 2) as a measuring point (a measurement on the sides would also be conceivable), so its quantity (1) and speed (2) become a comparison value for the current aqua-planning efficiency.
Der eigentliche Wasserglätte-Sensor besteht deshalb aus einer Meßeinrichtung, welche die Menge und deren Aufprallgeschwindigkeit (Aufpralldruck) des Spritzwassers permanent mißt und in einen Vergleichswert für den Wasserglätte-Effekt umsetzt, der dem Fahrer im Fahrzeuginneren angezeigt wird. Dabei ist es ausreichend, einen definierten Ausschnitt aus dem Spritzwasserstrahl zu erfassen.The actual water smoothness sensor therefore consists of a measuring device, which is the amount and its impact speed (impact pressure) of the spray water permanently measures and converts it into a comparative value for the water slipperiness effect, which is displayed to the driver inside the vehicle. It is sufficient to have one to capture a defined section of the spray water jet.
Zur Messung selbst können eine Reihe gängiger Messverfahren verwendet werden, wie Druckdosen oder Kraft- bzw. Wegmessung an einer vom Spritzwasser belasteten Fläche (Abb. 3).A number of common measurement methods can be used for the measurement itself such as pressure cans or force or displacement measurement on one exposed to splash water Area (Fig. 3).
Mit den heute verfügbaren Mitteln der Mikroelektronik (Mikroprozessoren) könnan die vom Wasserglätte-Sensor an der Meßstelle abgegebenen Werte je nach Reifentyp und Reifenlaufleistung gegebenenfalls zu einem Anzeigesignal feinerer Genauigkeit verrechnet werden.With the currently available means of microelectronics (microprocessors) the values given by the water slippery sensor at the measuring point, depending on the type of tire and tire mileage, if necessary, to a display signal of finer accuracy will be charged.
LeerseiteBlank page
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823217930 DE3217930A1 (en) | 1982-05-13 | 1982-05-13 | Water-smoothness sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823217930 DE3217930A1 (en) | 1982-05-13 | 1982-05-13 | Water-smoothness sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3217930A1 true DE3217930A1 (en) | 1983-11-17 |
Family
ID=6163415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19823217930 Withdrawn DE3217930A1 (en) | 1982-05-13 | 1982-05-13 | Water-smoothness sensor |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3217930A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003014694A2 (en) * | 2001-08-08 | 2003-02-20 | Bridgestone/Firestone North American Tire, Llc | Indoor hydroplaning test apparatus and method |
-
1982
- 1982-05-13 DE DE19823217930 patent/DE3217930A1/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003014694A2 (en) * | 2001-08-08 | 2003-02-20 | Bridgestone/Firestone North American Tire, Llc | Indoor hydroplaning test apparatus and method |
| WO2003014694A3 (en) * | 2001-08-08 | 2004-02-12 | Bridgestone Firestone North Am | Indoor hydroplaning test apparatus and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8127 | New person/name/address of the applicant |
Owner name: SCHLICKSUPP, HELMUT, DR., 6900 HEIDELBERG, DE |
|
| 8130 | Withdrawal |