Bosch Motorsport DDU 7, Руководство пользователя

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Lap trigger
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13.1.1 Electrical trigger signal
In DDU 7 all sources of measurement channels can be used as trigger signal.
• Analog input
• Digital input
• CAN input
Signal (measurement channel) properties
Low active signal (Bosch triggers): Trigger releases if signal is below the threshold.
High active signal (other manufacturer’s triggers): Trigger releases if signal is above the threshold.
Two types of trigger signal
• Main trigger (end-of-lap at start/finish line)
•
Sub-trigger (segment time, optional)
Bosch standard:
• Main trigger > 20 ms, < 40 ms, low active (Recommendation for Bosch triggers: 15 ms)
• Sub trigger > 40 ms, low active (Recommendation for Bosch triggers: 30 ms)
13.1.2 Software functionality
•
Race track topology and transmitter location frequently cause false triggers.
Software functionality prevents acceptance of false triggers.
• Under race conditions, trigger signals are sometimes missed.
Software functionality introduces ‘forced trigger’.
13.1.3 Prevention of false triggers
• Minimum vehicle speed for acceptance of trigger prevents false triggers while vehicle is
stationary in the pits.
•
Time based re-trigger protection prevents false triggers due to signal reflections on main
straight.
• Lap distance based retrigger protection prevents false triggers due to track topology.
13.1.4 Forced triggers
Lap distance based insertion of ‘forced trigger’.