# Building a Robotic Vacuum Cleaner

• geraldoon
In summary, the robot will require a 20 kPa suction pressure and a 1000 sqft cleaning area in one charge of the battery. The pressure and flow rate will be determined by the width and speed of the robot. The battery will need to have a minimum capacity of 10 joules/m3. The mouth parts of the robot will need to be designed to follow the surface of the floor without too much variation in the gap or the airflow.
geraldoon
I need to build a robotic vacuum cleaner that requires minimally 20kPa suction pressure, and is able to clean a 1000sqft area within a single charge of the battery. How do I first calculate the motor specs required to produce that suction pressure and the battery that is able to last the entire 1000 sqft cleaning. Any help would be appreciated

Mentor note: Moved to homework forum from EE forum.

Last edited by a moderator:
This is going to be extremely difficult to do with (evidently) no background in engineering. You're not even describing or approaching the first problem correctly.

A vacuum cleaner uses a vacuum pump, which is like a high pressure fan/blower. So you need both a pressure and a flow rate as the sizing criteria. Where did you get the pressure?

Second, there are a lot of vacuum cleaners out there. You should be studying how they work.

What is this project for? Is it a school project? If so, at what level?

Welcome to PF.

The solution requires that you specify the width and speed of the robot. That tells you how long it will take to cover 1000 m2.

The next issue is the flow rate of air while it is working. What suction pump will you use? You will need to know the pressure against volume curve for the vacuum pump, to find the operating point or range.
Power in watts is pressure in Pa, multiplied by the volume per second in m3.
The power gives you the minimum motor size required.

You then know the time and the power, so you can compute the minimum energy required in joules, which is the time in seconds multiplied by the power in watts. The energy gives you the minimum battery capacity required.

You will need to design the pick-up mouth parts, so it follows the surface of the floor, without too much variation in the gap or the airflow.

russ_watters

## 1. How does a robotic vacuum cleaner work?

A robotic vacuum cleaner uses sensors and algorithms to navigate and clean a space. It typically has a rotating brush or suction mechanism to collect dirt and debris, and can be programmed to follow a specific cleaning pattern.

## 2. Can a robotic vacuum cleaner replace traditional vacuuming?

While a robotic vacuum cleaner can effectively clean floors, it may not be able to reach certain areas or perform deep cleaning tasks like a traditional vacuum. It can, however, supplement regular vacuuming and help maintain a clean space.

## 3. How does a robotic vacuum cleaner handle obstacles?

Most robotic vacuum cleaners have sensors that allow them to detect and avoid obstacles such as furniture or walls. Some may also have features like virtual walls or boundary strips to create boundaries for the vacuum to follow.

## 4. How long does the battery last on a robotic vacuum cleaner?

The battery life of a robotic vacuum cleaner can vary depending on the model and usage. On average, it can last anywhere from 60 minutes to 120 minutes before needing to be recharged. Some models may also have the ability to automatically return to its charging dock when the battery is low.

## 5. Can a robotic vacuum cleaner be controlled remotely?

Many robotic vacuum cleaners come with a remote control or can be controlled through a smartphone app. This allows users to start, stop, or schedule cleaning sessions from a distance.

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