Autonomous mobility scooter requirements

To go back to the mainpage: PRE2017 3 Groep6.

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in order to make a product or a model of the system, it must first be decided what the actual requirements and limitations of our model are. with these requirements we can see what our model should eventually do.

we have split the requirements in four different sections, to split main concerns of the system.

navigation: these requirements concern everything to with the software and navigation, what it should, can, cannot or should not do.
safety: these requirements concern safety issues of a mobility scooter.
smart mobility: these requirements concern how to enhance the mobility scooter such that it responds to the requests of the user.
physical: these requirements concern the actual hardware that is needed for the mobility scooter.

navigation

1. the mobility scooter can navigate through a shop.
2. the mobility scooter can use elevators.
3. the mobility scooter can use public transport.
4. the mobility scooter can alter its path in case of obstructions.
5. the mobility scooter can offer alternative paths to the destination.
6. the mobility scooter can navigate itself when it is dark outside.
7. the mobility scooter can navigate through rain.
8. the mobility scooter can navigate through fog.
9. the mobility scooter can drive through snow less than 5 cm deep.
10. the mobility scooter can differentiate between a road and a cycle path.
11. the mobility scooter can differentiate between stationary and moving objects.
12. the mobility scooter can determine the light on a trafficlight.

safety

- The mobility scooter can not drive faster then 6 km/h on a walking path
- the mobility scooter should not get closer than 10 centimetres to another person while driving.
- if the autonomous system detects a failure, it notifies the user
- The mobility scooter can detect change in height in the road ahead (curbs, speedbumps, holes, ramps)
- The mobility scooter can detect a berm
- The mobility scooter can detect Bushes
- The mobility scooter can detect Cyclists
- The mobility scooter can detect pedestrians
- The mobility scooter can detect animals
- The mobility scooter can detect motorised vehicles
- The mobility scooter can look past a speed bump when driving up (Scooter will be tilted upwards)
- The mobility scooter will not fall over when making a turn
- The mobility scooter can not fall out of the scooter when turning
- The driver can not fall out of the scooter when making fast steering movements
- The mobility scooter should not distract other road users from concentrating on the traffic
- The mobility scooter should allow the driver to intervene, if they don't trust the scooter
- The mobility scooter should not endanger the driver if a failure occurs
- The mobility scooter should notify the user when the sensors are blocked (Also UI related)
- The mobility scooter can safely move to a safe spot when the battery is low
- The mobility scooter can safely operate with a driver of up to 125kg
- The mobility scooter will stop moving if the driver falls out
- Changes of injuries minimized when falling in the direct surroundings of a stationary scooter (for example: no sharp edges)
- Minimize change of falling when getting off and on the scooter
- The mobility scooter can detect if a wheel has been blocked
- Can override the driver input when collision is imminent (Not unusual that the applies the accelerator when trying to brake. Another example is that the driver wants to go forward but the scooter is in reverse)
- Will not tilt and fall when driving on a sloping surface
- Driver will not fall out of the scooter when driving on a sloping surface

smart mobility

1. The mobility scooter has a display.
- The mobility scooter has a speaker system
- The scooter allows the user to set their destination using the display.
- The scooter allows the user to set their destination using voice commands.
- The scooter allows the user to alter communicative and other settings, such as favorite destinations. <- this requirement needs to be looked at and be more specific
- The scooter allows a user to get in using up to x seconds. time to be edited after more research
- The scooter provides auditory feedback to the user.
- The scooter provides visual feedback to the user.
- The scooter can 'warn' people in vicinity of the scooter
- The scooter can be controlled through the use of either a steering wheel, a joystick or voice commands.
- The scooter can connect to the user's smartphone.
- The scooter maintains a connection to the internet.
- A user can make calls with the scooter.
- A user can send texts with the scooter.
- The scooter can self-initiate a call in case of an emergency.
- The scooter can communicate with other scooters to gather and share sensory information in their environment.

physical

- the mobility scooter should fit IR sensors
- the mobility scooter should fit ultrasonic sensors
- the mobility scooter should fit a LIDAR system
- the mobility scooter should have batteries that can last 3 hours of driving time
- the mobility scooter should have a computer system built in such that it can process the massive amount of data
- the mobility scooter should have wireless communication to other vehicles
- the mobility scooter should have wireless communication with a server
- The autonomous mobility soocter will have flashing lights.
- The autonomous mobility scooter will have whit front lights.
- The autonomouw mobility soocter will have red back light.
- The mobility scooter through a standard door (dimensions to be added)

legal requirements

- The mobility scooter will not drive faster than 6km/h on a side walk
- The mobility scooter will not drive faster than the speed limit when on a bicycle path
- The mobility scooter will not drive faster than 30 km/h on a bicycle path inside the built-up area.
- The mobility scooter will not drive faster than 40 km/h on a bicycle path outside the built-up area.
- The mobility scooter will not drive faster than 45 km/h on a regular road.
- The mobility scooter will not drive faster than the speed limit when on a regular road.
- When driving on a bicycle path the autonomous mobility scooter will not drive next to an other mobility scooter.
- When driving on a regular road the autonomous mobility scooter will not drive next to an other mobility scooter.
- When driving on a sideway the mobility scooter will obey the right of way rules for pedestrians.
- When driving on a bicycle path the mobility scooter will follow the right of way rules for mopeds.
- When driging on a regular road the mobility scooter will follow the right of way rules for mopeds.
- The mobility scooter will use flashing lights when changing driving directions.
- The mobility scooter will have his light on between 30 minutes before sunset and 30 minutes after sunrise when it is being used.
- The mobility scooter will ahve its light on during bad weather when it is used.