3.0 DISTANCE SENSORS – RISHI SHARMA
This section provides details about the distance sensors which are part of the VIBA system as seen in Figure 2.1 above. Section 3.1 pertains to the method of which the distance sensors of the VIBA calculate the distance between the cyclist and the edge of the track using the principle known as time-of-flight. Section 3.2 pertains to the method of which the distance sensors maintain accuracy around the track using the principle known as retroreflection.
3.1 How the Sensors Determine Distance
Section 3.1.1 contains a definition of time-of-flight. Section 3.1.2 pertains to how the distance sensors of the VIBA use the time-of-flight principle. Section 3.1.3 contains a sample calculation using a scenario where a track bike is fitted with the VIBA on a velodrome.
3.1.1 Definition of time-of-flight
Time-of-flight is a principle used for measuring the distance between a sensor and an object, based on the time difference between the emission of a signal and its return to the sensor, after being reflected by an object. The graph shown in Figure 3.1 below represents what the sensor is recording. Figure 3.1: Graphic Representation of Distance Sensor Data [Rishi Sharma]
The sensor releases a pulse of light, known as the trigger, and computes the time taken for the signal to be received. The distance the signal has travelled can be directly calculated from this data. Light and sound are the most common types of signals used with this technique .
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Distance of the nearest point of the improvements to the buffer edge and to the 12-ft. primary structure setback.
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First, The procedures of were take an energy car and roll it down a track with a without a sail and record the data from photogate A to B and the time to took to get there make sure the photogate are 555 cm away from each other. Do the same one energy car wit just wheels and one with one 3 times each.
Time Time is defined as a measured or measurable period, a continuum that lacks spatial dimensions. This broad definition lacks the simple explanation that humans are searching for. There are many scientists, philosophers, and thinkers who have tried to put time into understanding terms. The aspects of time that we can understand are only based on what we can perceive, observe, and calculate. Every day we look at our watches or clocks.