BE1009723A6

BE1009723A6 - Road alarm

Info

Publication number: BE1009723A6
Application number: BE9500904A
Authority: BE
Original assignee: Cuvelier Michel
Priority date: 1995-11-06
Filing date: 1995-11-06
Publication date: 1997-07-01

Abstract

The invention designed to increase road safety permits the on-board display (on the dashboard or elsewhere if necessary), in the form of lights or sounds, of the main parameters of the highway signs as well as the position of the vehicle on the road. To achieve this, a coded identification is used marked on the road or roadside (magnetic, coloured, luminous segments, etc.) that each characterise the road indications to be respected. The trajectory can be displayed by a continuous or dotted line that may be completed by a magnetic or electric support. This line may be made using lines of luminous paint or a series of luminous segments (cats eyes) along the trajectory to be followed. The current lines indicating the edge of the road may also be used to check the trajectory of the vehicle. The vehicle will capture the coded signals and trajectory marks by means of adapted sensors, positioned in suitable places on it. When the driver takes their vehicle outside of the displayed requirements, they will be immediately...

Description

       

   <Desc/Clms Page number 1> 
 



  ALARME ROUTIER L'invention concerne un dispositif comprenant trois systèmes interdépendants dont la fonction globale est d'accroître la sécurité dans la conduite d'un véhicule. 



  Le premier système consiste dans le marquage sur la chaussée, des éléments importants caractérisant les paramètres de la circulation tels que : trajectoire à suivre, limitation de la vitesse, sens interdit, arrêt obligatoire, approche d'un carrefour, voie non prioritaire, début et fin du marquage ; cette énumération n'étant pas limitative. 



  Ce marquage peut être réalisé avec des ensembles de segments parallèles constituant un module circulatoire (comme un code barres) placé sur la chaussée le long de la trajectoire à suivre et séparés les uns des autres d'une distance bien définie (par exemple fonction de la vitesse limite autorisée) Ces modules placés transversalement peuvent être reliés les uns au autres par un ou plusieurs traits continus de section et d'espacements éventuellement variables. 



  Le deuxième système se trouvant à bord du véhicule est composé de capteurs appropriés au mode de marquage adopté et placés en regard de la chaussée dans le but d'enregistrer des données de la route pendant le déplacement du véhicule. La position de ces capteurs doit tenir compte de la surveillance de la trajectoire du véhicule (position symétrique par rapport à l'axe du véhicule et/ou disposés sur cet axe). Ils peuvent être aussi placés à la hauteur des roues avant et des roues arrière du véhicule pour permettre un verrouillage des informations et une lecture différentielle du traçage. 

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  Le troisième système également placé à bord du véhicule comprend :   - un   appareil qui reçoit les données des capteurs, les décodent pour obtenir d'une part un affichage de ces données sous forme compréhensible pour le chauffeur (affichage digital, lampes témoins, paroles synthétisées, bib bib sonore, etc..) et d'autre part les éléments de contrôle capables de déclencher le système d'alarme décrit ci-après. 



  - Un dispositif avec alarmes sonores ou visuelles ou sensorielles s'enclenchent instantanément si le conducteur ne respecte pas l'une ou l'autre des contraintes imposées. Le système d'alarme pourra être actionné avec différents niveaux de puissance suivant l'importance de l'infraction commise. 



  - Les boutons de commande de marche et arrêt du procédé, les interrupteurs permettent le choix éventuel des paramères à contrôler ainsi que la coupure du circuit d'alarme en fonctionnement. 



   Le circuit d'alarme en ce qui concerne la trajectoire sera automatiquement coupé par action du clignoter lors d'un changement volontaire de trajectroire. 



    - Il   faut ajouter un appareil de mesure de la vitesse du véhicule dont il faudra tenir compte éventuellement dans l'interprétation des signaux captés. 



  Pour mieux comprendre le fonctionnement du procédé nous pouvons prendre un exemple de réalisation simple. 



  Supposons que nous limitions notre surveillance aux fonctions suivantes :-trajectoire - vitesse maximum autorisée - sens interdit - entrée d'autoroute - présence du marquage sur la chaussée. 

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  L'utilisation d'une cellule codée contenant quatre segments en forme de vé régulièrement espacés, suffira largement pour caractériser les paramètres. 



  Ces segments appelés Va, Vb, Vc, Vd ont été peints sur sur la trajectoire que devra suivre le véhicule (les V étant disposés comme une pointe de flèche indiquant la bonne direction). 



  Les segments réfléchissants seront nettement séparés les uns des autres au moyen d'une peinture absorbante. 



  La distance séparant deux cellules codées successives a été déterminée comme suit : 
 EMI3.1 
 
<tb> 
<tb> Vitesse <SEP> limite <SEP> en <SEP> km <SEP> par <SEP> hr <SEP> Distance <SEP> en <SEP> m
<tb> 120 <SEP> 20
<tb> 90 <SEP> 15
<tb> 60 <SEP> 10
<tb> 50 <SEP> 8
<tb> 30 <SEP> 5
<tb> 
 Les différentes cellules sont reliées entre elles par un trait continu large encadré de deux traits plus étroits pour permettre un contrôle en continu de la trajectoire du véhicule et une indication visuelle de celle-ci. 



  Les segments Va, Vb et Vd seront moins larges que le segment Vc ce qui permettra de repérer le sens d'avancement. 



  Pour les entrées d'autoroute les branches des V peuvent aller d'un côté à l'autre de la chaussée. 



  On peut disposer de capteurs Ca, Cb faisant appel à la lumière laser fixés sous le véhicule le premier à la hauteur des roues avant, le second à la hauteur des roues arrière de part et d'autre de l'axe du véhicule dont ils sont équidistants. 

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  Les capteurs enregistreront tour à tour la succession des segments contenus dans les cellules de la chaussée. 



  Le décodage de ces signaux permettra d'identifier les paramètres choisis et d'actionner si besoin le système avertisseur et le système d'alarme placés à proximité du conducteur. 



  La surveillance continue de la trajectoire est rendue possible grâce aux trois lignes continues qu'il faut éviter de couper avec l'un ou l'autre des capteurs sous peine d'enclencher la réaction. 



  La succession des cellules codées régulièrement espacées peut suffir à établir un   controle   de trajectoire. 



  En effet étant donné la mesure de la vitesse du véhicule et la distance entre deux cellules consécutives on peut prévoir à quel moment le véhicule doit recevoir le signal passage. Si ce temps est trop court la trajectoire est bonne mais il y a excès de vitesse. 



  Si la trajectoire n'est pas bonne le véhicule n'atteindra pas en temps voulu le signal attendu et cela déclenchera   l'alarme"défaut   de trajectoire". 



  La tolérance par rapport à la trajectoire idéale s'obtient en agissant sur la longueur des branches du vé et sur l'écartement entre les lignes continues. 



  L'usage du clignoteur permettra au chauffeur de changer de trajectoire et de passer éventuellement sur la bande de roulement opposée sans faire déclencher l'alarme. 



  Lorsque le signal d'alarme sonne le chauffeur doit réagir en conséquence et pourra couper ce signal en faisant usage par exemple du bouton d'appel des phares qui sera connecté au circuit d'alarme. 



  Le viseur placé à l'avant du véhicule peut aider le conducteur à suivre la trajectoire dans les limites imposées.



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  ROAD ALARM The invention relates to a device comprising three interdependent systems whose overall function is to increase safety while driving a vehicle.



  The first system consists in marking on the roadway, important elements characterizing the traffic parameters such as: trajectory to be followed, speed limitation, prohibited direction, compulsory stop, approach of a crossroad, non-priority lane, start and end of marking; this list is not exhaustive.



  This marking can be carried out with sets of parallel segments constituting a circulatory module (such as a bar code) placed on the roadway along the path to be followed and separated from each other by a well defined distance (for example depending on the speed limit allowed) These modules placed transversely can be connected to each other by one or more continuous lines of section and possibly variable spacing.



  The second system on board the vehicle is composed of sensors appropriate to the marking mode adopted and placed opposite the road for the purpose of recording road data during the movement of the vehicle. The position of these sensors must take account of the monitoring of the vehicle path (position symmetrical with respect to the vehicle axis and / or arranged on this axis). They can also be placed at the front and rear wheels of the vehicle to allow information to be locked and a differential reading of the trace.

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  The third system also placed on board the vehicle includes: - a device which receives the data from the sensors, decodes it to obtain on the one hand a display of this data in a form understandable for the driver (digital display, pilot lights, synthesized speech, bib bib sound, etc.) and on the other hand the control elements capable of triggering the alarm system described below.



  - A device with audible or visual or sensory alarms is activated instantly if the driver does not comply with one or other of the constraints imposed. The alarm system can be activated with different power levels depending on the importance of the offense committed.



  - The process start and stop control buttons, the switches allow the possible choice of the parameters to be controlled as well as the interruption of the alarm circuit in operation.



   The alarm circuit with regard to the trajectory will be automatically cut off by the action of the flashing during a voluntary change of trajectory.



    - A vehicle speed measuring device must be added, which may need to be taken into account when interpreting the signals received.



  To better understand how the process works, we can take a simple example.



  Suppose we limit our surveillance to the following functions: -trajectory - maximum authorized speed - prohibited direction - highway entrance - presence of markings on the roadway.

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  The use of a coded cell containing four regularly spaced v-shaped segments will be more than enough to characterize the parameters.



  These segments called Va, Vb, Vc, Vd were painted on the trajectory that the vehicle will have to follow (the V being arranged like an arrowhead indicating the right direction).



  The reflective segments will be clearly separated from each other by means of an absorbent paint.



  The distance between two successive coded cells was determined as follows:
 EMI3.1
 
<tb>
<tb> Speed <SEP> limit <SEP> in <SEP> km <SEP> by <SEP> hr <SEP> Distance <SEP> in <SEP> m
<tb> 120 <SEP> 20
<tb> 90 <SEP> 15
<tb> 60 <SEP> 10
<tb> 50 <SEP> 8
<tb> 30 <SEP> 5
<tb>
 The different cells are linked together by a wide continuous line framed by two narrower lines to allow continuous monitoring of the vehicle trajectory and a visual indication thereof.



  The segments Va, Vb and Vd will be narrower than the segment Vc, which will make it possible to identify the direction of advance.



  For motorway entrances the branches of the V can go from one side to the other of the road.



  It is possible to have sensors Ca, Cb using laser light fixed under the vehicle the first at the height of the front wheels, the second at the height of the rear wheels on either side of the axis of the vehicle of which they are equidistant.

 <Desc / Clms Page number 4>

 



  The sensors will record in succession the succession of segments contained in the road cells.



  The decoding of these signals will make it possible to identify the parameters chosen and to activate, if necessary, the warning system and the alarm system placed near the driver.



  Continuous monitoring of the trajectory is made possible thanks to the three continuous lines which must be avoided by cutting with one or the other of the sensors, otherwise the reaction will be triggered.



  The succession of regularly spaced coded cells may be sufficient to establish trajectory control.



  In fact, given the measurement of the vehicle speed and the distance between two consecutive cells, it is possible to predict when the vehicle should receive the pass signal. If this time is too short the trajectory is good but there is speeding.



  If the trajectory is not good, the vehicle will not reach the expected signal in due time and this will trigger the "trajectory fault" alarm.



  Tolerance in relation to the ideal trajectory is obtained by acting on the length of the branches of the vee and on the distance between the continuous lines.



  The use of the flashing light will allow the driver to change course and possibly pass on the opposite tread without setting off the alarm.



  When the alarm signal sounds, the driver must react accordingly and can cut this signal by making use, for example, of the headlight call button which will be connected to the alarm circuit.



  The viewfinder placed at the front of the vehicle can help the driver to follow the trajectory within the imposed limits.

Claims

CLAIMS The invention "Road alarm" is intended for drivers of road vehicles.

It increases safety by introducing on board the vehicle various traffic parameters from the road itself such as: - trajectory to follow - speed limits - prohibited directions - crossroad approach - non-priority traffic - compulsory stop - start and end of monitoring, this list not being exhaustive.

A control and monitoring device placed on board the vehicle capable of recording the traffic data while passing it constantly compares the running of the vehicle with the recorded data.

When the driver does not comply with the displayed instructions, the warning device follows, followed by alarm signals.

The alarm will be automatically silenced when the driver has corrected his driving error.

However, the driver remains free to silence the alarm through his action on a button provided for this purpose or by actuating another control of the vehicle connected to the alarm circuit (call for headlights). <Desc / Clms Page number 6>

To do this, the invention comprises: 1) A marking on the roadway containing the traffic parameters in the form of a coded system.

This system involves the use of coded cells arranged transversely on the road along the path that the vehicle will have to follow, sometimes extending over the entire width of the road if necessary.

Each cell will be made up of a set of segments of appropriate shape (vee, arcs of circle, rectilinear) whose dimensions and distances separating them from each other as well as their number will constitute a set of parameters capable of translating a large number of 'information (as in a barcode system for pricing goods).

These different modules can be linked together by one or more juxtaposed lines so as to display the trajectory and obtain constant monitoring of the vehicle with respect to this trajectory.

The segments of the circulatory modules can be placed on the pavement by means of a reflective paint or by making use of reflective materials integrated into the covering.

We can also use magnetic or electrical data carrier segments or even sensitive to sound reflection (ultrasound).

The combination of several different marking systems is also possible.

It would then be a matter of the marking system adopted to measure the light, magnetic or sound variations in the passage of the vehicle to ensure their transfer aboard it. <Desc / Clms Page number 7>

2) The sensors placed on board the vehicle facing the road are responsible for recording the information printed on the road and converting it into electrical signals.

With regard to the marking obtained with a reflective paint (or with any reflective material integrated into the coating) it is possible to use laser radiation which, by reflection on the successive passage of the reflective segments, will generate electrical pulses faithfully reproducing the characteristics of these surfaces. Similarly, if it is a magnetic marking, the variation of the magnetic field when the vehicle passes will have to be measured using an adequate counter.

The sensors will be placed opposite the roadway, at different places on the vehicle, in the axis of the latter, at the height of the front wheels and the rear wheels and symmetrically with respect to this axis in order to obtain a reading faithful signals from the road and to guide the vehicle along the path described by the marking.

The lines already existing on the roadway can also be perceived by these sensors and serve as a basis for trajectory control for example (less precise and more limited).

3) These pulses will be transmitted inside the vehicle to obtain, after decoding, on the one hand, the display of the data thus perceived (indicator lamps, synthesized voices, audible warning signals) and, on the other hand, to enable the system to be switched on. alarm at the desired level when the driver is at fault with this data. <Desc / Clms Page number 8>

The driver will be notified at all times of the parameters that control his driving. Failure to comply with these parameters will trigger a warning system (flashing, bib bib, etc.) specific to the type of perceived faults, followed by an alarm system (s) (audible and visual or sensory or the combination of both ).

The driver will have to correct his driving error to stop the alarm, although he can always activate a stop button or activate a button already existing on the vehicle (e.g. call for headlights).

A measurement of the vehicle speed will have to intervene in the appreciation of the recorded parameters.

A viewfinder installed at the front of the vehicle will make it easier to drive along the prescribed path.

It will always be possible for the driver to cut the alarm circuit or to choose the type of control desired (depending on his state of fatigue for example).

However, for certain serious driving faults (such as a highway entrance taken in the opposite direction), a device specially designed for this purpose should be made compulsory. In this case, markings from one end of the road to the other and bring the successive cells as close as possible.

The pulses indicating the vehicle going in the opposite direction must activate the alarm system without fail.