Browse Prior Art Database

Glide Distance Indicators for Motor Vehicle Operators Disclosure Number: IPCOM000178309D
Original Publication Date: 2009-Jan-22
Included in the Prior Art Database: 2009-Jan-22
Document File: 3 page(s) / 81K

Publishing Venue



The problem solved by the invention is providing glide distance indicators to operators of automobile and other vehicles. Specifically providing information to a vehicle operator related to potential distance traveled to a given destination/intersection or other stoppage area given current speed and roadway characteristics.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 53% of the total text.

Page 1 of 3

Glide Distance Indicators for Motor Vehicle Operators

The core of the invention is an onboard processor for a vehicle that uses navigational information about the vehicle and its route to compute glide distances to stoppage points. The onboard processor then provides an indicator to the vehicle operator when the appropriate glide distance and speed over that glide distance has been reached. This allows a vehicle operator to more efficiently use the vehicles power source by gliding to stoppage areas such as intersections and interstate exits. The invention allows the user to configure the system to support a certain level of speed required for the vehicle to operate safely within various traffic conditions while maintaining high glide to power ratios.

The invention reduces energy consumption while responding to a variety of roadway conditions, not just those predetermined by route selection. The invention responds quickly to changing roadway conditions such as increases in traffic density to provide more effective glide efficiency calculations for vehicle operators. The user can configure this invention to more easily integrate its glide efficiency calculations with existing traffic flows and vehicle operator preferences.

In a preferred embodiment, the invention consists of a computing device with a GPS receiver, a set of pitch and roll accelerometers, and a storage system that includes vehicular traffic, topographic and road navigation data.

The computing device is placed in a vehicle, such as a passenger car or bicycle. The device's main logic flow is shown below in Figure 1:


Page 2 of 3

Fig. 1

During each pass of the computing device's logic, the first step is to get the associated vehicle data, such as the chassis roll and pitch angles, the acceptable glide speed for a given area, the traffic angle

The vehicles velocity is determined by a combination of velocity readings from the GPS sensor, as well as, inputs from the pitch sensor to indicate if the vehicle has a "nose up" attitude when accelerating or a "nose down" attitude when braking. These attributes help determine more precise points than current velocity information from GPS alone can provide.

The traffic conditions, as well as, acceptable glide speeds for a given area can be computed based on a set of known conditions such as average traffic density or location in a high speed area. Additionally these attributes can be set by the vehicle operator to compensate for local conditions such...