Smart Walker IIIP15041

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Project Review Agenda● Introduce Team● Problem Statement● Project Background/ Deliverables● Stakeholders● Smart Walker Scenarios● Customer Requirements● Engineering Requirements● Project Plan ● Questions, Concerns, Suggestions

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The Team:David MalangaTeam LeaderEE - 5th YearBluff Point, NY

Christopher JonesFacilitator

ME - 5th YearAlbany, NY

Kailee PolimeniCommunicatorME-4th Year

Rochester, NY

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Jeremy RossiHardware Specialist

EE-5th YearClifton Park, NY

Jun Jie HuangElectronics Specialist

EE - 5th YearNew York, NY

Problem StatementThe Smart Walker is a device that will assist the elderly or disabled with walking. In addition, the Smart Walker also measures and records its user’s vitals and other useful information. This gives elderly or disabled people more independence, and also simplifies the job of anyone potentially taking care of them. Currently there are prototypes for the Smart Walker, however they are incomplete and/or do not fit all of the criteria for the desired product. The goal of this project is to have a completely functional walker with several added capabilities. It should be able to monitor the vital signs of the user, detect if the user has fallen or is likely to fall, and have the ability to operate autonomously in certain situations. The Smart Walker must be able to perform self-navigation, fall detection, and sensor data logging while resembling a normal walker. Anything that was not already purchased under the previous designs must be incorporated into the $500 budget. 4

Project Background

Current State● Sleek design that has low profile and

resembles a traditional walker.● Sloppy electronics: disconnected

wires, shorts, untested components.● Many systems have problems and

are only partially working.● Subsystems only tested individually

and are not connected together at all.

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Project Deliverables

Desired State● Aesthetically similar to a traditional walker.● System-level completion.● Subsystems tested independently as well as collectively.● Robust.● Well-documented design, making more advanced add-ons possible.

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StakeholdersCustomer:● Dr. Sahin

Users:● Elderly patients in hospital● Hospital patients recovering (similar to above)● Patients in physical rehabilitation

Stakeholders:● Caretakers● Medical providers● Rochester General Hospital● Patients in physical rehabilitation

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Project Constraints● The budget for this project must not exceed $500.● The user of the walker must not be wired to the walker in any way.● The walker must resemble a traditional walker.● Software compatible with autonomous motion design (autonomous motion

programming by third party)● Only increase the amount of health information collected● All sensor technology capable of being used in medical facility● The walker must be fairly light (light enough to be picked up and moved

around).

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Use ScenariosScenario 1: User is normally walking with Smart Walker. User’s health information is collected during this time (heart rate, instability, possibility of sores, etc.). Information stored in Smart Walker. Information sent out wirelessly to health care provider.Scenario 2: User walking with Smart Walker, and loses balance while walking. Fall probability updated in data log. Information sent out wirelessly to health care provider.Scenario 3: (Low Priority) User calls Smart Walker via use of smart watch/ bracelet and Smart Walker autonomously navigates to call location.Scenario 4: User walking without assistance of Smart Walker. User falls. Walker detects the user has fallen via accelerometer in wristband. Autonomous capabilities triggered to find fallen. Walker moves to fallen individual. Distress call is sent out to caretaker.Scenario 5: User walking with assistance of Smart Walker. User falls. Distress call is sent out to caretaker.

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Customer Requirements● Electrical Requirements

○ Wireless Capability○ All shorts must be located and fixed, all the loose wires need to be reconnected to their proper place○ The walker must be set up to integrate the SLAM navigation software○ The systems must undergo rigorous testing and still be functional

● Mechanical Requirements○ The walker must collect data from the strain gauges to for the caretaker to detect lack of balance○ The walker must collect temperature/heart rate data from the hand grips and store it○ The clutch must be fixed/redesigned to allow movement without added resistance○ The systems must undergo rigorous testing and still be functional

● Medical Requirements○ The systems must meet current medical standards○ The systems must be compatible with current medical systems

● Visual Requirements○ The walker must not resemble a robotic walker○ There must be an enclosure for the Kinect camera

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# Imp Description Comments/Status

CR1 1 Wireless Capability. We must have the design to allow the capability for future add-ons.

CR2 1 The walker must collect temperature/heart rate data from the hand grips and store it.

The customer stated that whatever sensors that could be incorporated into the handles should be moved/added there.

CR3 1 All shorts must be located and fixed, all the loose wires need to be reconnected to their proper place.

Strain gauge data processing board has a short. Previous team stated it was in the conductor etching of the PCB itself.

CR4 1 The systems: rigorous testing and still be functional. Customer stated robustness was very important.

CR5 1 The walker must collect data from the strain gauges to for the caretaker to detect lack of balance.

The differential between the two strain gauges will detect balance or lackthereof.

CR6 1 The clutch must be fixed/redesigned to allow movement without added resistance.

During the previous team's testing, the motors stopped spinning. It is unclear what caused this issue.

CR7 1 The systems must meet current medical standards. The frame of the current walker came from a standard commercial walker, thus this should not be a problem. More research is needed.

CR8 2 The systems must be compatible with current medical systems.

Potential future add-ons. It is still unclear if a wireless medical bracelet (worn by the user) is desired.

CR9 1 The walker must not resemble a robotic walker. Do not make any significant changes to the profile of the Smart Walker II.

CR10 1 There must be an enclosure for the XTION camera. Customer stated he wanted the camera enclosed, and that he wanted the enclosure 3D printed.

CR11 2 Import SLAM software created by grad students into this system.

Customer stated this was not as high a priority, but it is important to at least be compatible so that it can be added in the future

Engineering Requirements● Transmit data wirelessly from PandaBoard microcontroller.● Test temperature, pulse, weight, and strain sensors.● Locate short in strain gauge PCB, re-wire electronics efficiently and neatly.● Fetch data from sensors with the microcontroller and store in SD card or other memory

element.● Test the clutch system, and re-design if flawed or broken.● Write a subroutine for basic mapping and movement around a room with XTION camera.● Design and 3D print an enclosure for the mounted XTION camera.

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# Imp Source Function Engr. Requirement (metric) Unit of Measure

S1 1 uC wireless tx

Transmit data wirelessly from BeagleBoard microcontroller. bps

S2 1 sensor Temp. Test temperature. deg (F)

S3 1 sensor pulse Test pulse sensors. Heartrate

S4 1 sensors weight Test weight sensors in seat. Lbs

S5 1 sensors strain Test strain gauges. stress

S6 1 Locate short in strain gauge PCB, re-wire electronics efficiently and neatly.

S7 1 Fetch data from sensors with the microcontroller and store in SD card or other memory element.

S8 2 Test the clutch system, and re-design if flawed or broken.

S9 1 Write a subroutine for basic mapping and movement around a room with XTION camera.

S10 1 Design and 3D print an enclosure for the mounted XTION camera.

S11 2 Port python SLAM programs into new smart walker

Preliminary ScheduleWeek 3: Begin preparations for the Design Review on Thursday February 12.Weeks 4-6: Begin testing of subsystem components (both electrical and mechanical)Weeks 7-9: Drafting of Engineering detailsWeeks 10-12: Proposal of detailed designs and list of required components for purchasingWeeks 13-15: Finalization of project designs allowing team to begin purchasing components

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Project Plan

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