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romainrossi / make_your_robot_tick_2024

Make Your Robot Tick, a robotics competition by ESIGELEC and Muthoot
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Charge and discharge specification #2

Open Surriya1010 opened 5 months ago

Surriya1010 commented 5 months ago

Team Name : FENESTA RuleBook Reference : nil Question :

  1. Do we have any specific Discharge rate/Waveform ,while discharging to the Energy collector from the Robot
  2. Do we have specified charging voltage (like 6v, 12v) in the Charging Source, For the waveform given (Fast, Middle and Slow Energy Sources)
romainrossi commented 5 months ago

Answer to @Surriya1010 , question 1

To deliver energy to the counter and scores points, you robot must establish contact with the "Energy Storage Station" described in the Rulebook, page 12. The contacts dimension and position are described page 10 (same height for Energy Storage Station and Sources).

When delivering energy, your robot energy storage system will discharge through a resistor of 100Ω. The voltage across this resistor will be monitored by the Energy Storage Station to measure the corresponding current, count the energy quantity and score points.

I added all the electrical schematics (made with KiCAD) in the repository : schematics.

Here is an extract of this schematics showing the energy delivery part : image

As per the safety rules, your robot must not deliver above 48V to this point.

romainrossi commented 5 months ago

Answer to @Surriya1010 , question 2

Every source delivers 5V across a limiting resistor.

The full schematics are also available in the repository (see link in previous answer), here is an extract showing only the sources : image

Each source is enabled/disabled following the waveform given in the Rulebook, page 11, figure 5.

To gather energy, your robot has to make contact with the sources on the field and charge it's embedded energy storage system.

devalopr commented 2 weeks ago

"Power input From energy storage station"

@romainrossi What's the source for 5V? A battery? A 5V 1A power supply? [Like this]

romainrossi commented 2 weeks ago

The power supply for the Power Sources on the field will be a 5V USB phone charger or USB Power bank, depending on the installation conditions. The power rating will be well above what is needed to power the whole system.

As you can see in the schematics above, your robot can charge on each source through a current-limiting resistor which value is different for each source rating. As a consequence, the maximum voltage your robot can get on the sources is about 5V (+/- power supply tolerance), but this voltage will decrease as your robot draw more current to charge it's Energy Storage System.