NUM FICHE 005
074
CODE DOC 025
REDACTEUR 030
SIMAL Isabelle
ORGANISME 035
ISTI
DATE RED 040
9203
ILL 050
*
DOM GEN 060
électronique|industrie automobile|
DOM SPEC 065
équipement électronique|suspension du véhicule automobile|
ENT AN 105
preview sensor
IN ENT AN 110
E; ab
DEF AN 115
Ultrasonic transceiver located under the front bumper that measures vehicle height from the road on the basis of the reflection time it takes supersonic waves to propagate to the ground and return again the receiver. Judgement of the road condition ahead of the vehicle is made by analyzing the pattern of change in vehicle height. (R)|cde|
CONT AN 120
Also anticipated are predictive suspension systems in which preview sensors actively read the road ahead in order to control the suspension in advance. |a|
NOTE AN 125
A transceiver is "a device which transmits and receives data from punch card to punch card; it is essentially a conversion device which at the sending end records the card and transmits the data over the wire, and at the receiving end punches the data into a card". |f|
SYN AN 130
1- road sensor |E; gh|
2- ultrasonic sonar height sensor |E; i|
3- road condition sensor |E; d|
4- sonar road surface detector |E; j|
5- supersonic road sensor |E; k|
: 131
CONT 1: Stability of the vehicle was also improved by optimumly controlling the damping force for various driving conditions through signals from a newly developed road sensor, which utilizes supersonic waves, and other sensors. |h|
CONT 2: The ultrasonic sonar height sensor in Nissan's Bluebird Maxima emits 40-kHz pulses, timing their reflection back from the road. This indicates the frequency and extent of front-end vertical movement - a measure of road condition. Combined with sensors measuring speed, engine and brake modes, and steering wheel position, a central processor automatically sets the suspension to compensate for road roughness. |i|
CONT 3: Nissan reaches a higher level of sophistication by adding a road condition sensor. This ultrasonic sonar transceiver under the front bumper measures the height of the car's body from the road, allowing the central processor to adjust shock settings accordingly. ((...)) the sonar detects the undulation before the front wheels reaches it. |d|
ENT FR 205
capteur d'état de route
IN ENT FR 210
n m; F; (R)
DEF FR 215
Emetteur-récepteur ultrasonique placé sous le pare-chocs avant, qui mesure la hauteur du véhicule par rapport à la route à partir du temps de réflexion nécessaire aux ondes supersoniques pour se propager jusqu'à la route et revenir au récepteur. L'analyse des différentes hauteurs du véhicule ainsi enregistrées permet de connaître l'état de la route qui précède le véhicule. (T)(R)
CONT FR 220
NOTE FR 225
Un émetteur-récepteur est un appareil qui émet et reçoit des données d'une carte perforée à une autre; il s'agit essentiellement d'un dispositif de conversion qui, dans la partie émettrice, enregistre la carte et transmet les données via un cable à la partie réceptrice qui enregistre les données sur une carte. (T)|f|
SOURCES 295
SOURCE ANNEE VOLUME NUMERO MOIS PAGE MENTION
a YOSH-F 1987 108
b MONR 1e-G 1988 46
c SAET-G 1985 5
d MONR 11b-F 1986 20
e SAET-G 1985 7
f PARK-C 1989 1665
g MONR 1e-G 1988 49
h SAET-G 1985 1
i MONR 11b-F 1986 21
j YOSH-F 1987 105
k SAET-G 1985 6

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© Isabelle Simal, 1993.