182.25A roboticist in Boston designs a mobility assistive robot that consumes 8.5 watts per hour when moving and 3.2 watts per hour when idle. If the robot operates for 6 hours moving and 4 hours idle, and then undergoes a maintenance cycle consuming 12.4 watts for 1.5 hours, what is the total energy consumed in kilowatt-hours?

As assistive technology advances, energy efficiency is emerging as a key focus for next-generation mobility robots—especially those designed to support aging populations and improve daily independence. This Boston-based innovation from a leading roboticist offers a clear, data-driven look at the robot’s power demands during real-world use, drawing attention in conversations around smart, sustainable assistive design. With growing interest in eco-conscious automation and active living, energy metrics like this conversation starter reflect broader trends in US households seeking reliable, efficient, and accessible care solutions.

How Energy Use Adds Up: A Breakdown of Power Consumption

Understanding the Context

The robot’s energy footprint unfolds in distinct phases. During 6 hours of active movement, it draws 8.5 watts per hour. Combined with 4 hours of idle operation—when power use drops to 3.2 watts per hour—the active and idle periods shape the core consumption pattern.

After movement, a 1.5-hour maintenance cycle spikes energy use to 12.4 watts per hour, capturing the robot’s peak power demand during diagnostic and repair protocols.

Total Energy Consumption: Calculation Breakdown

To determine total energy in kilowatt-hours (kWh), each phase’s watt-hour value is calculated before converting to kilowatts.

#### 182.25A roboticist in Boston designs a mobility assistive robot that consumes 8.5 watts per hour when moving and 3.2 watts per hour when idle. If the robot operates for 6 hours moving and 4 hours idle, and then undergoes a maintenance cycle consuming 12.4 watts for 1.5 hours, what is the total energy consumed in kilowatt-hours?

Key Insights

  • Active Movement Phase:
    6 hours × 8.5 watts = 51 watt-hours

  • Idle Period:
    4 hours × 3.2 watts = 12.8 watt-hours

  • Maintenance Cycle:
    1.5 hours × 12.4 watts = 18.6 watt-hours

Adding these values: 51 + 12.8 + 18.6 = 82.4 watt-hours total

Converting watt-hours to kilowatt-hours: 82.4 ÷ 1,000 = 0.0824 kWh

Continue Reading

M \cup H = M + H - (M \cap H) = 23 + 18 - 7 = 34
Therefore, species that neither migrate nor hibernate:
- 34 = 22

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Final Thoughts

That equates to approximately **0.082