Project homed. Use Cases
We start with only 2-3 use cases in order to be able to have an efficient and streamlined design process. We tried to narrow the scope of our robot such that we can better prioritize the features and create a targeted solution.
Use case 1: Help PwD to paint
| Objective | Support the PwD in a meaningful craft |
| TDP | Human-Robot Painting Management |
| Actors | PwD, robot, caregiver |
| Pre-condition | The patient with dementia expresses an interest in painting and the necessary materials are available. |
| Post-condition | The patient with dementia has completed a painting and feels a sense of accomplishment. |
| Action sequence | UC steps: 1. The PwD tells the caregiver that he wants to paint 2. The caregiver brings the robot 3. The robot greets the PwD 4. The robot starts the painting activity by asking the person several questions:
5. While painting, the robot asks the PwD:
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| UC Step | Requirements | Claims | IDP |
| 1 | - | - | - |
| 2 | - | - | - |
| 3 | The robot can talk or show text on a tablet | The robot can grab the attention of the PwD | Help PwD to paint |
| 4 | The robot knows a set of predefined questions to ask a PwD when a painting session is about to start. | Breaking a complex task, like painting, into smaller subtasks helps the PwD achieve his goal. | Help PwD to paint |
| 5 | The robot can play relaxing music | Calm music helps the PwD relax while painting. | Help PwD to paint |
Use case 2: Remind the PwD to engage in painting
| Objective | Help the PwD maintain his identity |
| TDP | Human-Robot Painting Management |
| Actors | PwD, robot |
| Pre-condition | The PwD had painted before The PwD walks by the robot. The PwD hasn't painted in the last 3 days. |
| Post-condition | The person decides to start a session of painting |
| Action sequence | UC steps: 1. The person walks by the robot and the robot recognizes him. 2. The robot asks the PwD if he painted anything recently and if he wants to start painting now. |
| UC Step | Requirements | Claims | IDP |
| 1 | The robot is able to recognize a specific patient and remembers their preferences | - | - |
| 2 | The robot can talk or show text on a tablet | This interaction can trigger a PwD to start a session of painting. | Remind the PwD to engage in painting |
Use case 3: Save a picture of the painting
| Objective | Provide connectedness with family |
| TDP | Human-Robot Painting Management |
| Actors | PwD, robot, family |
| Pre-condition | The PwD had finished a painting session. The robot assisted PwD with painting. |
| Post-condition | Family member receives an update about PwD. |
| Action sequence | UC steps: 1. The PwD announces they finished the painting they were working on. 2. The robot asks the PwD to hold up the painting so that it can see it. 3. The robot takes a picture of the painting. 4. The robot saves the picture to a directory visible to the family member. |
| UC Step | Requirements | Claims | IDP |
| 1 | The robot can understand PwD when they communicate they finished the task. | - | - |
2 | The robot can communicate to the PwD(via speech and text). | - | - |
| 3 | The robot can save a picture. | - | Save a picture of the painting |
| 4 | The robot can save pictures. |
Use case 4: Recommend a meaningful picture to paint
| Objective | Help the PwD maintain a connection with his past |
| TDP | Human-Robot Painting Management |
| Actors | PwD, robot, relatives |
| Pre-condition | The family uploaded pictures from PwD's past |
| Post-condition | The person gets to paint a meaningful picture |
| Action sequence | UC steps: 1. The person starts the painting process 2. The robot recommends the person a meaningful picture, that might help them remember some of their memories. |
| UC Step | Requirements | Claims | IDP |
| 1 | The robot has a remote interface for the relatives where they can upload pictures and stories for the PwD to see. | - | |
| 2 | The robot can show a picture on the tablet | This helps the PwD have a better painting experience. | Recommend a meaningful picture to paint |