How is the control parameter WEHP:
To verify the proper functioning of a target in common use WEHP round where he ranked fifth individual sensors (and not platelets con installati 2-3 o più sensori insieme). Come da figura in alto, i sensori sono posizionati a croce più uno nel centro.
I sensori sono tutti indipendenti tra loro.
A 50m dal target vengono fatti 2 test:
1) Posizionando i sensori alto, basso, dx e sx a 12,5 cm dal sensore centrale, il sistema deve essere in grado di colpire ed illuminare SOLO il sensore centrale (verde). Nessun altro sensore dev’essere colpito.
Questo mi fa capire che il mio spot è inferiore a 25cm di diametro.
2) Posizionando i sensori alto, basso, dx e sx a 11,5 cm dal sensore centrale, il sistema dev’essere in grado di colpire e attivare TUTTI i 5 sensori.
Questo mi fa capire that my spot is more than 23cm in diameter.
If both tests are successful, we will have a system with a range of about 24 cm.
However, it is set with a tolerance of 5%.
It shall then checks on other distances. With the same board you measure the behavior of the first spot at a distance less (5-10-20-30m) and then at longer distances (100-200-300-400-500m and up to the loss of signal). This is because we must be sure that the IR beam does not converge EVER since his exit from WEHP
IMPORTANT:
1) The spot must be perfectly round. We use sensors independent of each other in order to dispel possible spot to "cat eye" burrs or lateral (the latter is a classic problem of slow economic).
2) We use the same type of sensors that we use when we play and controlled by a signal with the same code that we use in the game itself. We have checked how to use the same sensor but with no encryption has unreliable behavior.
3) the IR sensors that are used for testing the WEHP must be free of any filter or protection
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