ParaShoot 0 #1 August 29, 2003 I'm setting up a system myself but I was wondering if there is a "standard" device or system with sensors on the market. Both for gate confirmation and for speed measuring? ** Know what you say but don't say all you know. ** Quote Share this post Link to post Share on other sites
rhino 0 #2 August 29, 2003 I would love to have one.. Something to show my turn in altitudes and speeds through the entire arc of the swoop.. That would be cool.. Quote Share this post Link to post Share on other sites
ParaShoot 0 #3 August 29, 2003 Actually I meant a kind of sensor between the gates to confirm you passed trough and to measure the speed over the 185 ft. Quote Share this post Link to post Share on other sites
ramon 0 #4 August 29, 2003 I think the PST uses video cameras. If you go to Radio Shack (here in the US) you can buy electric eyes very cheaply and rig them to a buzzer (bzzzzz. yes he broke the plane with his foot, and rely on video for disputes). It might be sort of hard to level and make secure (especially if someone takes out the eye) but it woudl serve your purpose.. If you were really cool you could use a laser and a smke machine to make it visible. the laers could go to a cheap detector (also available at radio shack and electronics sotres to ring a buzzer.) good luck"Revolution is an abrupt change in the form of misgovernment.", Ambrose Bierce. Quote Share this post Link to post Share on other sites
SkymonkeyONE 3 #5 August 29, 2003 Actually the PST uses cameras AND electronic sensors to score entrance gates. Remember, Ramon? The wireless aparatus that Lyle was fucking with on the first day at Panama City? Quote Share this post Link to post Share on other sites
ramon 0 #6 August 29, 2003 Ohh. come to think of it I do remember tripods being set up. I guess I thought they were cameras."Revolution is an abrupt change in the form of misgovernment.", Ambrose Bierce. Quote Share this post Link to post Share on other sites
SkySlut 0 #7 August 29, 2003 well I know that they were messing with lasers for a while, but due to some techincal difficulties they have abandoned them for now...too much movement going on and they werent giving reliable readings. Quote Share this post Link to post Share on other sites
cobaltdan 0 #8 August 29, 2003 we designed and quoted a system for jim slaton two years ago. it used 3 laser sensors coupled with a computer to calculate speeds. the first two sensor were to determine if you made the first gate and your speed entering the first gate. the third was to sense if you made the last gate and your avarage speed through the course. the problem voiced: basically the cost about $10k. video cameras were the low cost solution. eventually a sensor system will be necessary as events get more tv time. a sensor based system could display speeds and missed gates immediately on a score board or overlayed on live video... sincerely, dan<><> www.extremefly.comDaniel Preston <><> atairaerodynamics.com (sport) atairaerospace.com (military) Quote Share this post Link to post Share on other sites
cobaltdan 0 #9 August 29, 2003 another possible solution (but not cheap) is issuing a rfiq tag to each competitor and putting it on their foot. antennas at each gate would sense them and link to a computer... sincerely, dan<><>Daniel Preston <><> atairaerodynamics.com (sport) atairaerospace.com (military) Quote Share this post Link to post Share on other sites
ParaShoot 0 #10 August 29, 2003 I just got all components together to make a sophisticated system. Laser eyes are not the best option due to the difficult adjustment of the small beam and the wire to the other side. Therefore I got a light sensor with a mirror with a range of 20 mtr (60 ft). The mirror is about 4 inches and has to catch a part of the beam of almost 1 foot, so accurate enough as entry gate. A horn and a light will go for an adjustable time (± 3 sec.). With a push button it can be resetted manually. I'll try to test it tomorrow because Sunday I leave for the worldmeet in Gap France. If the entry gate will work I'll make a second and connect them to get the speed. But I'm sure there's a similar system somewhere for other sports. Skiing, skating, running, etc. Henny Quote Share this post Link to post Share on other sites
SkySlut 0 #11 August 29, 2003 I thought part of the problem was that they wanted to mount the lasers on the tops of the gates and the gates were moving around too much due to wind motion. Quote Share this post Link to post Share on other sites
AndyMan 7 #12 August 29, 2003 These types of devices are pretty common in the ski industry. Check this out: http://www.reliabletiming.com/detail.cfm?prodnum=92584 _Am__ You put the fun in "funnel" - craichead. Quote Share this post Link to post Share on other sites
ParaShoot 0 #13 August 30, 2003 That's the kind of system I'm looking for. Unfortunately this system for skiing has no sensor for entry gate. It's a switch. Anyone has experience with the accuracy of the sensors? Are they suitable to have a pretty flat top if set on 5 ft.? Quote Share this post Link to post Share on other sites
cobaltdan 0 #14 August 30, 2003 we didnt want to mount anything to the actual windblade gates. the windblade gates must remain safe to hit. the idea was to mount a laser and sensor on an industrial tripod and locate some distance say 50'' to the side of the gate for safety. line up so that the beam shoots across the gate at the correct height to be sensed (i.e. level with the top of the flags) on the other side 50' out of the way would be another tripod with a retro reflector. With 3 pairs of such tripods you can measure: speed at first gate and overal speed and of course verify that the jumper made the gates. the system due to how big an area it is set up on would be wirelessly linked between tripods and the score computer instead of hard wired. sincerely, dan<><> www.extremefly.comDaniel Preston <><> atairaerodynamics.com (sport) atairaerospace.com (military) Quote Share this post Link to post Share on other sites
SkymonkeyONE 3 #15 August 31, 2003 That sounds like the system that Jim and Lyle had at Panama City. Quote Share this post Link to post Share on other sites
AndyMan 7 #16 September 2, 2003 Quote That's the kind of system I'm looking for. Unfortunately this system for skiing has no sensor for entry gate. It's a switch. I'm assuming that you could replace the sensor with a switch... but it's been a while since I've used the ski hardware. I'm a bit out of date. It'd be worth a call to a ski supplier, I'd think... _Am__ You put the fun in "funnel" - craichead. Quote Share this post Link to post Share on other sites
