A worried racer
Length/time=Velocity
The ON time and OFF time of a square wave are equal. this condition is not applicable for a pulse.
Sonar works by sending a pulse of ultrasound through water. It then listens and detects the pulse if it reflects back from a surface. The time is measured (electronically) between sending the pulse and hearing the retured echo. Knowing the speed at which sound travels through water, it can be calculated how far the returned echo has travelled and hence distance of the object.
Infrared lasers measure speed by sending out a light pulse, which is then measured by calculating the time it takes to hit the target and rebound back. It works in the same way an echo does.
A worried racer
Length/time=Velocity
You must know pulse width and max range required. You then find receive time (listening time) using 12.34 micro sec. Add PW and receive time then take the reciprocal. You can approximate by ignoring the PW and just using receive time.
Use a stopwatch.
(shiwwasuji@gmail.com)Duty Cycle DC is the ratio of pulse duration to the pulse repetition time periodDuty Cycle DC = pulse duration (t)/pulse repetition time period (T)Pulse Duration (t) = 0.008 x 2.5 ms
The distance is 220 miles, with a time of 3 hours and 28 minutes for a car. You can calculate your time for a lorry by using the speed you would drive at.
recovery time makes the pulse rate normal=)
If you mean how long do you take a pulse for? A Mintute.
Propagation time of any pulse is roughly the time needed for the leading edge of the pulse to travel from one point to another. It will be more accurate to say that the pulse is registered at a given point when its leading edge reaches half of the maximum value (amplitude) of the pulse. The propagation time of a sound pulse is equal to the distance between the measuring points divided to the sound velocity in the medium in which it propagates.
A starting point is needed to calculate the journey time to Aberdaron, Gwynedd, Wales.
The ON time and OFF time of a square wave are equal. this condition is not applicable for a pulse.
We have a pulse because every time the heart beats, it makes a pulse. So when you can't feel your pulse it means your heart has stopped beating.