Dynamic Speed & Route Guidance

Racelogic's Speed & Route Profiler provides detailed speed and route instructions to drivers for use in a range of vehicle tests where consistency and repeatability are required

In vehicle testing it is no longer enough to say “drive around for a few hundred miles and come back with the data”, because tests must be consistent and repeatable.

Test drivers are sometimes required to follow a set route over several hours and several hundred miles to test vehicle characteristics like fuel consumption, emissions, brakes and functionality of air conditioning and heating controls. There are also now several regulations such as those from the Environmental Protection Agency (EPA) which stipulate tests carried out at precise speeds over set distances.

Racelogic have taken two of their existing products to create a system that is dedicated to provide speed route guidance to a driver for use in vehicle handling tests. The products used are the OLED display and the VBOX Micro, although almost any VBOX data logger can be used.

How does the Speed & Route Profiler work?

1) A reference driver drives the required route at the speed future drivers are intended to follow. At every turn the driver presses an event marker to signify the exact turn point, which is achieved by using a hand held brake trigger attached to a VBOX with a digital input.

2) The file that is produced is loaded into Racelogic’s Speed Profiler software, which has the following features:

• Speed profile throughout the journey
• Turn points including roundabouts, turns, forks, merges etc
• Route directions for countries with either left or right hand drive
• Warning distance before turn can be set between 50m and 1000m
• Points can be manually added or deleted
• GPS dropouts caused by obstructions during the reference drive can be filled in
• Speeds can be adjusted for short sections where the driver had to adjust their route due to temporary obstructions
• Speeds can be set for long distances at a fixed speed – for motorway driving and testing for instance
• Routes can be up to 10 hour duration

3) Once the reference route has been driven and adjusted in the speed profiler software, it is loaded into the OLED display element of the speed and route profiler. This display then indicates to test drivers any turns that they should make and the speed that each section should be driven at, in order to obtain repeatable vehicle tests.

At the end of the route either percentage or actual time variance is shown, so that the journey can be validated and to ensure that tests are consistent.

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