Table of Contents
Team Vision for Detailed Design PhaseIn this phase our team worked to do finalize the mechanical and the electrical aspects of the design, and to ensure that all prototyped mechanical parts will fit on the frame. All electrical components were laid out to minimize the number of wires required in the design.
A preliminary layout of the power control board was completed, such that power to all external components can be controlled by the microcontroller and to ease assembly through the use of headers and Molex connectors where possible.
A large amount of time was spent looking into datasheets for the various electronic components to ensure that compatibility between all devices was ensured.
Finalizing the last few line items on the bill of materials was critical in this phase as we finally secured funding from the Simone Center for Innovation. An NSF grant of $3000 was awarded, and some of the high-risk parts have been ordered as of the detailed design review.
A Test plan and an initial timeline for the completion of the physical construction of the project in MSDII was created during this phase to ensure that all available time is utilized effectively for the fall semester.
- What does the team plan to accomplish by the Detailed Design Review?
We plan to finish the Edge website, which includes all the electrical schematics for the system and how they will connect. We will also finish determining which equipment to use (batteries and regulator) and draw up the schematic for the board. We will hope to finish the drawings for the housing of the battery/ microcontroller, the servos, display, handlebar controls and the lidar mount. These will then be prototyped by the end of the semester. Lastly we will hopefully getting funding set up so that we will be able to purchase the equipment, such as lidar, micro controller, etc. The test plans will also be created so that when the parts get here we will be able to immediately start testing. We will start using the test plans to verify the functionality of the components once we get the parts and as time allows.
- What tasks have been accomplished so far?
So far we have completed the electrical schematics for the full system and the power board. We have also finished the 3D modeling schematics for the power and microcontroller, along with the front and rear servos. We have begun modeling of some of the other mounts. The reason these other mounting systems have not been finished is due to our funding issue. We need some of the parts to be ordered and on hand so that dimensions can be taken.
- What tasks remain, and who is the owner of each?
The remaining tasks include drawing up the schematics for the housing of the display, lidar mount and the handlebar control. The next step is to 3D print all the components. This part will be completed by Lorenzo and Devin. Specifically the housing for the battery and microcontroller, the fork/ gears and screen mount will be done by Lorenzo. The housing for the servos, handlebar control and lidar mount will be done by Devin. The remaining tasks for the electrical section is to create the specific test plans for each component that we will be testing. This will require purchasing the parts and going through Richard to get the funding and signing up Lorenzo and Kristi for the class next semester. That is currently being worked on by multiple members of the team. Then we will test each component using the previously created test plans. This section is being worked on by Andrew, Nemanja, Zack and Kristi. Specifically, the bluetooth module will be worked on by Kristi, the lidar testing will be done by Andrew, the servo analysis will be done by Zack and the controls on the handlebars will be done by Nem. As time allows we will purchase more components needed for the design and then have members test these components.
- What decisions have been made so far?
We have made decisions to prototype the housing components using 3D printing on campus to verify functionality and attachability to Andrew’s bike. We have decided on the majority of all the components we will be using, except the battery and a few other smaller components (like navigational pad and display screen). We have made the decision to have two Team members, Lorenzo and Kristi, take a class through the Simone Center in order to receive additional funding for the design and prototyping of the system. Lastly, our concept for using the Lidar to detect oncoming terrain has been set for the project.
- What questions does the team have for the customer and/or guide in order to continue moving forward?
A question for our guide is to ask about the process and likelihood of being able to get a workspace for Fall of 2017, along with a locker to store parts.
Drawings, Schematics, Flow Charts, Simulations
Electrical Wiring SchematicsBelow shows a comprehensive electrical wiring diagram for the entire system. It shows how each component will be connected to the power control board and the Arduino.
The Power Control Board will be a custom board that will control what components get power based on which mode the user is operating in. It also will contain some data lines so that it is easier to route all the wires throughout the bike frame. Below is a picture of the Power Control Board Schematic.
The Wiring Harness Diagram shows how all of the different wires will be routed on the bike from the power control board to the forward facing components located on the handlebars.
Bill of Material (BOM)
The updated Bill of Materials is shown below.
A link to the live document can be found here
Test PlansUsing an updated Version of our Engineering requirements shown below, we began to plan out how each of the requirements would be tested.
With the metrics from the document above in mind, we began to construct the test plans below, with a timeframe for their completion and an assigned member for each.
A link to the live Engineering requirements document can be found here
A link to the live Test Plan document can be found here
Risk AssessmentThe updated version of the Risk Assessment is shown in the Figure below.
A link to the live document can be found here
Plans for next phase
Individual 3 Week GoalsEach member of the team has mapped out their goals and tasks for the next three week phase of the MSD 2 project. Individual plans are listed below
- Individual three week plan for Andrew Lints
- Individual three week plan for Zachary Law
- Individual three week plan for Devin Cooley
- Individual three week plan for Lorenzo Nunez
- Individual three week plan for Kristina Shillieto
- Individual three week plan for Nemanja Drobnjak