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1 mt? What is a "mt?"Hi all,
i need an application note describing a schematic for a linear position
sensor, in "time of flight" mode. The range of sensing is from 1 mt to
1 cm, and the resolution less than 1 cm
thanks
Mauri wrote:
Hi all,
i need an application note describing a schematic for a linear position
sensor, in "time of flight" mode. The range of sensing is from 1 mt to
1 cm, and the resolution less than 1 cm
thanks
1 mt? What is a "mt?"
it is a 1 thousandth part of the letter "t"
Mauri wrote:
Hi all,
i need an application note describing a schematic for a linear
position
sensor, in "time of flight" mode. The range of sensing is from 1 mt
to
1 cm, and the resolution less than 1 cm
thanks
Hi, Mauri. You haven't provided enough information to give an answer.
I'm assuming "1 mt" means 1 m, or 1 meter. Apart from that, several
questions remain.
* What do you mean by "time of flight mode"? Are you talking about
time to travel a fixed distance?
* Do you need continuous position measurement, or is measurement at
the beginning and end of the measured distance sufficient? It's much
easier to measure time from crossing a sensor at the beginning of a
distance to the end of the distance, and then produce meters per second
or something like that.
* "Linear position sensor" implies a number of things, including
linear servo pots, LVDTs, and many other things. If you have a
specific sensor in mind, you should specify it.
* How fast is your object travelling? It's a lot easier to measure
the speed of a tortoise than a bullet.
This subject has been covered many times in both s.e.d. and s.e.b., and
it might be more profitable for you just to use Google to find answers
on these newsgroups to similar questions, rather than wait for
responses.
Good luck
Chris
Mauri wrote:
Hi all,
i need an application note describing a schematic for a linear
position
sensor, in "time of flight" mode. The range of sensing is from 1 mt
to
1 cm, and the resolution less than 1 cm
thanks
Hi, Mauri. You haven't provided enough information to give an answer.
I'm assuming "1 mt" means 1 m, or 1 meter. Apart from that, several
questions remain.
* What do you mean by "time of flight mode"? Are you talking about
time to travel a fixed distance?
* Do you need continuous position measurement, or is measurement at
the beginning and end of the measured distance sufficient? It's much
easier to measure time from crossing a sensor at the beginning of a
distance to the end of the distance, and then produce meters per second
or something like that.
* "Linear position sensor" implies a number of things, including
linear servo pots, LVDTs, and many other things. If you have a
specific sensor in mind, you should specify it.
* How fast is your object travelling? It's a lot easier to measure
the speed of a tortoise than a bullet.
This subject has been covered many times in both s.e.d. and s.e.b., and
it might be more profitable for you just to use Google to find answers
on these newsgroups to similar questions, rather than wait for
responses.
Good luck
Chris
Instead of trying to measure the time, it is common to use the reflectedHi, Chris. With TOF i mean a method measuring the round trip from the
reflection of a pulsed laser beam. Nevertheless, as light travels about
30.5 cm per ns, i think the desired resolution requires estraordinarily
precise timing. Thanks for the advice you gave me, i'm going to follow it.
Home Depot sells an Electronic Tape Measure for ~ $50.00Hi all,
i need an application note describing a schematic for a linear position
sensor, in "time of flight" mode. The range of sensing is from 1 mt to
1 cm, and the resolution less than 1 cm
thanks
Are we re-inventing again ?