DE29811174U1 - Cruise control system with integrated, dynamic monitoring of the safety distance - Google Patents

Description

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- 3 Description:

Description:

Cruise control system with integrated, dynamic monitoring of the safety distance.

Manually programmable cruise control systems are particularly useful for long-distance journeys. In addition to simplifying vehicle control, fuel can also be saved (approx. 5 - 20%). Vehicles can be driven at a constant speed and speeding can be prevented with appropriate programming. However, if the traffic ahead slows down, the driver must intervene in order not to drive too close and thus endanger themselves. As long journeys are tiring, reaction times can increase significantly, which can easily make the necessary safety distance too small. If, for example, a vehicle has overtaken and changes into your own lane too quickly, the safety distance is usually far below the limit, which can be dangerous and can result in official fines if distance measurements are being taken.

Cruise control system with integrated, dynamic monitoring of the safety distance.

The cruise control system with integrated, dynamic monitoring of the safety distance can be used like conventional systems; the desired speed is programmed and the system controls the engine speed etc. This extended system has sensors, e.g. lasers (mini laser modules (approx. 10 x 30 mm etc.) with 635 - 670 nm (visible) or 785 nm wavelength (invisible) or other sensors) which are mounted on the bumper, for example.

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rod (vehicle front etc.). The sensors radiate forward in the direction of travel so that the width of the vehicle is covered (the sensors may need to be optimized with collimator or objective lenses). The sensors should have a scanning range of around 100 meters and be manufactured or installed to be shock and climate resistant. If the evaluation and control electronics are activated, the distance to the vehicle in front is constantly determined (computer module). This measurement can be shown optically, with a multi-digit display, up to date (digital-analog display). This display can also make parking easier in a parking garage etc., for example, as the distance to the wall can be read exactly, which is an advantage in poor visibility conditions. As soon as an obstacle is detected in the measuring range, the evaluation electronics regulate the engine speed and thus increase the distance that is recognized as too small. For example, if the programmed speed is 100 km/h, the safety distance should be around 50 meters. If there is no obstacle in the detection range of the sensors, this speed is maintained. If you come across a slower-moving vehicle (truck, etc.), this is detected by the sensors and the evaluation electronics constantly compare the target and actual values. (With or without optical display) If the target value is undershot, the control electronics reduce the current speed until the current target value is reached. If the obstacle moves away, the original speed is automatically reached again. When the design

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When controlling the control electronics, it must be defined in which area the system can work autonomously. If the distance is reduced too quickly, for example, no unintentional emergency braking may be initiated. This can be achieved if a defined maximum value deactivates the system, if, for example, parameters made up of meters (distance reduction) and seconds are used as a reference (e.g. 10 meters in one second, etc.). In these cases, it is useful to activate an acoustic signal that informs about the impending danger. After the driver has reacted accordingly, the system, the control, can be restarted automatically or switchably.

The system can be used in practically all types of vehicle (trucks, cars, motorcycles, etc.) and can contribute efficiently to road safety. Especially on long-distance journeys, which can be easily tiring, the system can also relieve the driver's workload, as it reacts autonomously to distance reductions before a driver who is no longer fully concentrating notices that he is in a dangerous situation. If, for example, an overtaking vehicle pushes into your lane too quickly and does not accelerate any further, the safety distance is certainly too small. If an official distance measurement is carried out in this situation, this can have expensive consequences and cost a lot of money, etc. In addition to the additional safety, this aspect can also contribute to this optimized control system being retrofitted or installed at the factory.

Claims (1)

&phgr; · 'inte Fahrgeschwindigkeitsvftge'lsys-Cem *Tnit 'integrated, dyn. Thomas Brecht Schönbornstraße 32 76646 Bruchsal - 1 Protection claims: I hereby apply as a private individual for the registration of the utility model at the German Patent Office. 1. Cruise control system with integrated, dynamic monitoring of the safety distance. Characterized in that a cruise control system has evaluation and control electronics that autonomously and dynamically convert sensor-determined data into engine control commands and thus monitors and automatically adjusts the required safety distance by: A cruise control system of conventional design and operation. Evaluation and control electronics are integrated or can be looped into this system. This electronics is coupled to one or more sensors (laser, ultrasound, etc.).
The sensors have large horizontal ranges. The evaluation electronics constantly monitor the target and actual values (distance/speed) and automatically regulate the current driving speed if the values fall below a defined limit. The sensor-controlled regulation can be switched on permanently or manually (control buttons etc.). Travel speed VSge*2sysi!em *with integrated, dyn. - 2 Protection claims: The determined distance values are displayed optically, digitally / analogue, with display devices (actual value, target value or both) or directly electronically implemented without these devices.
The system has control indicators (LEDs, light bulbs, etc.) that show the operating status.
If predefined values (defined by distance and its reduction in seconds) are exceeded, a visual and/or acoustic (sound transducer) warning is given.