Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
The magnetic fields surrounding an inductor extend to some degree in all directions, but are most intense in the plane of the coil. So even if you move metal nearby but not inside the coil itself you get some change in inductance.
So, you have some vendetta against traffic lights?So will the street dept get pissy if I park an EMP generator on them and fire?
So thats why my friends plastic P.O.S. car does not get the green light on the left turn lane sometimes! That inductance sensor is set to low. neat!
So will the street dept get pissy if I park an EMP generator on them and fire?
Thanks.
So besides measuring the inductor's inductance, the traffic light also applies current on the coil, in order to create a magnetic field?
Without applying current on coil, its inductance would change only if the car was really inside the coil?
The traffic light applies current to the coil in order to measure inductance. The two go together.
The ability of the system to measure a change in inductance when the car passes over comes from how sensitive it is at measuring change of inductance. They have designed it so that it is sensitive enough to work effectively when the car passes over it with the amount of current they pass through it. The intensity of magnetic field is a function of the current in the coil, this is true, but the field always surrounds the coil to varying degrees in all directions no matter how much current is passing through it. The field is never constrained to be completely inside just the loop itself.
"inductance" is meaningless if you aren't moving electrons. It's like asking what a hand-shadow would look like if you didn't turn the light on.
You guys with the traffic lights are lucky. Up here they have been installing goddamn ROUNDABOUTS all over the place. They even have them in front of strip malls. A year ago I could just drive straight down the road - in front of the mall there was a separate lane for cars turning left to the mall. No problem.
Now there's a roundy-go-bullsh!t in front of it. So you have to slow down to a crawl in case some of the oncoming traffic decides to do a one-eighty.
Another one is next to a railroad crossing. Train comes, roundabout gets choked with cars, nobody moves in either direction.
And they plant trees and bushes and crap on them, of course. So you can't even see the big ugly SUV whipping round the turn until it nearly smacks into you.
"inductance" is meaningless if you aren't moving electrons. It's like asking what a hand-shadow would look like if you didn't turn the light on.
You guys with the traffic lights are lucky. Up here they have been installing goddamn ROUNDABOUTS all over the place. They even have them in front of strip malls. A year ago I could just drive straight down the road - in front of the mall there was a separate lane for cars turning left to the mall. No problem.
Now there's a roundy-go-bullsh!t in front of it. So you have to slow down to a crawl in case some of the oncoming traffic decides to do a one-eighty.
Another one is next to a railroad crossing. Train comes, roundabout gets choked with cars, nobody moves in either direction.
And they plant trees and bushes and crap on them, of course. So you can't even see the big ugly SUV whipping round the turn until it nearly smacks into you.