Thursday, June 12, 2008

iGantry versus Championchip

Recently, there is an increase in usage of iGantry for running races, namely sundown marathon,upcoming mount faber run. This is maybe due to the inexpensive method as compared to championchip.

What is iGantry?

iGantry is an electronic race timing system with accuracy up to hundredth of second. The electronic BIB called iTag offers runners both an integrated number and a transponder chip. The system uses radio frequency identification (RFID) technology to automatically and accurately track runners as they pass through an antenna gantry as shown in the picture below.


Picture taken from www.continuum.com.sg

There are some caution notes which the user need to take note of. Never fold your RFID runner tag. Please do not attempt to remove or reposition the attached microchip or antenna. It is wise to store your tag away from places that are susceptible to heat and harsh sunlight.

And to start using the equipment, the user is expected to wear his RFID embedded number tag at his chest level. The memory chip within the RFID tag contains his particulars including his tag number, category type (age group) and other relevant data. The runner can start his run at his own time. The system will read the data from the Tag and display his Tag number and run timing on the LED scoreboard each time he run past the gantry.

What is championchip?

C
hampionChip is a miniature transponder in a specially designed plastic housing. This device contains a chip in combination with an energizing coil. These elements are encased in a waterproof glass capsule, meaning the ChampionChip can be used under all conditions (wet, dry, cold and hot).

The ChampionChip can be worn in different ways. For running races, the ChampionChip is attached to the runner’s shoelace. In triathlons it is attached to an ankle bracelet.

There are no batteries in the ChampionChip. The transponder is passive until moved into a magnetic field, generated by a send antenna. Here the energizing coil produces an electric current to power the chip. The transponder then transmits its unique identification number to a receive antenna. The whole procedure takes approximately 60 milliseconds and is repeated continuously.

How does the Championchip work?

The send and receive antennas are cast in thin tartan mats. These antenna mats are place at the finish line and other checkpoints. They are connected to a yellow box at the side of the road, containing electronics and batteries. Each time a runner wearing a Championchip crosses the mats, the chip gets energized and sends out its ID-number. This number and the corresponding time are then stored in the yellow box and transferred to a timing computer for further processing.



Antenna mat sends out electromagnetic field

ChampionChip sends its unique code


Personally, i felt that the championchip is more efficient in terms of register runners' timing. In the sundown marathon, which uses the iGantry, failed to register some of the runners' timing during the checkpoints along the race route. But the iGantry is definitely a cost saving method to use in a race.

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