How To Win A Race - Sensor Strategy

Опубликовано 26 октября 2016, 14:00

Using data acquisition to win on race day: sensor strategy!
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Sensor strategy really comes down to data acquisition, measuring all kinds of information on the car: battery temperature, tire pressure, transmission oil pressure, remaining energy, throttle position, and so on.TE connectivity supplies over 100 products and many of the sensors used in the Formula E car through their technical partnership with Andretti. Just as important as the build quality of these products is knowing what to do with the information the sensors provide. Live data is fairly limited in Formula E, however after each race engineers dive through all of the information each sensor provides. The decisions made using this information can easily mean the difference between finishing on or off the podium.

One critical item to measure is battery temperature, as it greatly impacts the performance of the vehicle. If the battery temperature reaches about 55 degrees Celsius, the car’s electric regeneration is limited, reducing efficiency and changing the brake bias. If the cell temperatures reach 62 degrees Celsius, the performance of the vehicle is automatically reduced. And finally, if the temperature reaches 64 degrees, the car stops.

What do you do if the battery temperature is getting too hot? The easiest solution is of course to use less throttle, but this could likely mean giving up your position. An alternative method is to reduce battery regeneration, which adds significant heat to the battery pack under braking as it’s using the electrical motors to put energy back into the battery to slow the vehicle down. By using the mechanical brakes, the heat can be displaced elsewhere, however this of course means you’ll have less energy overall than your opponents. If there’s enough juice in the battery and only a few laps remaining, it’s a strategy that can pay off. If battery energy is low however, sacrificing regen could mean running the battery dead. Battery temperature and the car’s performance have to be carefully balanced in order for a team to have an advantage.

The sensors TE develops aren’t purely limited to the world of motorsport, as they have products reaching out to automotive OEMs, the energy and industrial sector, and even aerospace and defense.

A huge thank you to TE for sponsoring this video!

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