Electronic timing systems
Electronic timing systems
Subject: Automatic Slalom Timers
From: dibella@crusher.ppdcae (dibella)
Subject: Re: Speed Control/Boat Timing
Date: 27 Dec 93 12:23:12 GMT
In article 111717MAX@psuvm.psu.edu, MAX@psuvm.psu.edu (Mark K. Miller) writes:
>In article , tj@gpu.utcc.utoronto.ca (Terry
>Jones) says:
>>
>>Sorry to post with more questions, but does anybody know HOW they
>>do the automatic timing? Is there something you attach to the boat
>>underneath? What do you attach to the course? Is it radio, ultrasonic,
>>do the automatic timing? Is there something you attach to the boat
>>underneath? What do you attach to the course? Is it radio, ultrasonic,
The current automatic timing systems operate on a magnetic field principle.
The course has magnets (of good size) suspended under the boat guide where ever
a time interval is desired.(Entrance and exit gates are needed)
The boat has a magnetic transducer with a substantial gain amplifier hooked to an
elapsed time indicator (stop watch). As the boat passes the magnet a pulse is ge
nerated in the transducer this is used to trigger the timer. The problem with t
his type of system is it's susceptible to the earths magnetic field as well as t
he electrical and magnetic fields generated by the boat motor.
This causes false triggering by hitting the boat wake or making sharp turns or r
ough water.
Not to post an ad but I have developed a system to eliminate the false triggering and
provide "hands off" timing, average speed. So I have a fair amount of knowledge
on how they work. If you are interested in some info on my timer or want to buil
d your own give me a call or send me E-mail at (dibella@bones.ppd.Kodak.COM). My
news net doesn't seem to get all the articles posted to this group so I may not
see your response.
Not to post an ad but I have developed a system to eliminate the false triggering and
provide "hands off" timing, average speed. So I have a fair amount of knowledge
on how they work. If you are interested in some info on my timer or want to buil
d your own give me a call or send me E-mail at (dibella@bones.ppd.Kodak.COM). My
news net doesn't seem to get all the articles posted to this group so I may not
see your response.
---
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim DiBella
For all your Automatic Timing needs --
Shortline Electronics B.T.S.
(716)225-9188 ((
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