We have been making one final push for C-Term. The ME team has created a test piece for the pressure vessel and have been working on rounding out the corners on the casing. ECE has revised the PCB for the power board to accommodate the single pressure vessel. The Echo Server is also successfully compiling now; however, the project is drawing too much power over USB and will not download. This issue looks to be resolved over break. Finally, the CS team has been working on creating bi-directionality in the object pipe, so that data and commands can be sent and received through the GUI. Also, an attitude indicator has been created to get roll, pitch, and yaw. In fact, the orientation now changes in the GUI.
This update has been brief as we are busy working towards the end of the term. We will be sure to provide another update during the break.
Now that the design of a single pressure vessel has been confirmed, the team can enter the manufacturing phase. In order to complete the manufacturing process, the ME team needs to obtain information from the ECE and CS team. Specifically, they need electronics dimensions and temperature estimates. The ECE team is diligently working on temperature calculations. Also, the ECE team is working on completing the AHD and Echo Server. Both items require the successful downloading of code. The team has been in contact with NXP to resolve this issue. CS has created a priority list for tasks and advised the other teams to do the same.
The entire team is coming to the conclusion that we will need to work over Spring Break. When C Term ends, we will only have D Term to complete the project. D Term is only 7 weeks long. Combine this with the fact that all the team members will have to complete other course for graduation to see that we simply cannot afford to let a week elapse without working. More details about working over spring break will be made available.
It has been a busy couple of weeks. Each team has been working diligently to complete specific tasks to keep on pace with the deliverables schedule. As usual, we will start with the ME team. They made preliminary heat transfer calculations using arbitrary inside and outside temperatures. In order to complete these calculations, the ME team will be contracting the ECE team to find out the maximum temperatures for the different pieces of hardware. Also, power vs drag calculations were made for the bilge motors. Electrical power, mechanical power, and efficiency were determined. In addition, a series of bilge pump tests were completed. These tests confirmed the calculations of power and efficiency. The ECE team has finished redesigning the power supply. There is talk of switching from a separate power vessel to one unified pressure vessel to store all electronics. This idea will be discussed and evaluated in the coming weeks. The Software for the USB/serial communication for low-level drivers is almost complete. The bulk of the code is written, and the team is now in the debugging process. The second revision of the AHD is also complete. Testing is being done to confirm the functionality. Finally, the CS team made several updates to the GUI and poolside interface. These updates include dials for depth and temperature, a chart of positions over time, a console log, and a working task hierarchy. RPC calls are still in the works for the the motors.
An important progress note for this week is that the entire team has begun discussing the possibility of competing in AUVSI. It has been calculated that each student will need approximately $1200 to attend. We have also been distinguishing the differences in our MQP goals and the AUVSI specifications. After seeing this contrast, the team determined that after the school year is over that we will need to complete additional work to make the robot meet the AUVSI guidelines. Everyone was fine with this, as we are all excited about the possibility of entering WAVE into this competition. We will have more AUVSI information for you in the following weeks.
Happy New Year. This means that we are officially in C-Term. A lot of work was completed over the break. From the mechanical team, they created a gant chart to track changes. They also worked on establishing their testing protocol. The ECE team were able to finish the design of the motor shields and will be submitting the design for fabrication. Currently they are in the debugging process for the first revision of the AHD. Finally, the CS team created a repository to set up scripts. The FitPC was tested and linked to the SVN. Jar files can now be transfered to the FTP. Due to the holiday next week, there will not be a General Body Meeting, so you will get another update from us in 2 weeks.
Hello everyone. B Term is coming to a close, and we have one last update before the new year. This week the ME decided to switch the pressure vessel from a cylindrical shape to a rectangular prism. They also will be working on calculating flow and drag. The ECE team finished the power schematic and received all parts for the AHD board revision. The prototype will be assembled within the week. Meanwhile the CS team has been able to connect to the FitPC to a DyIO. Currently they are working on creating a GUI for the poolside interface. At the individual team advisor meetings, each team will present a show and tell of everything they have accomplished. We hope everyone has a terrific holiday break, and we will see you all in 2013 and C Term.
Well it’s been our first week since the PDR, which means we have been working towards our end of term goals. One pressing question from the PDR that was addressed was the buoyancy of our robot. The ME team addressed this issue by proposing a change from a cylindrical pressure vessel to one that is a rectangular prism. This new model allows our chassis to become more neutrally buoyant. In other news, the ECE team has finalized the first revision of the Abstract Hardware Device. They have composed a three ring binder containing all of the schematics and reference sheets pertaining to the AHD. Finally, the CS team has assembled their Fit PC. The plan is to enable remote access for Ethernet and wireless capabilities. As a group, we have decided to present all of our prototypes at next week’s general body meeting (which has been moved back an hour to 5 pm. so that everyone can attend).
The team has also selected a name for our Robosub. After two rounds of voting, our platform is officially called the Waterborne Autonomous VEhicle or WAVE for short. It’s very exciting to have a name finally chosen as it makes the project more personal.
One last note, within the next 48 hours, major updates will be put into affect on the website. Most (if not all) of the coming soon sections on this site will be updated with the appropriate information. Hopefully, you will be able to gain a greater understanding of WAVE and AUVs in general once these updates have been put into affect.
This blog post is a few days later than usual, but that was because we were waiting for the PDR to happen before writing one. We had our Preliminary Design Review on Tuesday, November 27. The presentation went very well. Instead of forcing you to read over 1000 words to hear what happened, please enjoy the PDR in its entirety by watching the below videos. These videos have also been posted in the media section of this website in case you want to view them at a later time.
One more week until the PDR! We got another chance to present in front of our advisors. Our presentation was better, but the advisors still believed there was room for improvement. A few critiques that they had included not saying acronyms or technical terms without being able to explain them to the audience. The presentation still lacked some rationale for making certain decisions about the project. A good comment was that while we have been living and breathing this project for months, this will be the audience’s first exposure to the project. This really put our presentation into perspective. When we make our final edits we will be taking that into consideration.
Short blog post this week as we are all busy working on the presentation. We will keep you posted with how it goes!
Hello everyone. This week we attempted to run through our PDR presentation for the advisers. While our technical content was very good, the advisors informed us that our presentation was lacking in the design process department. For the next revision we will be including not only the aspects of the project that we have decided upon, but how we decided that these were the best options. We also had three separate presentations for each team, but for the sake of flow, we will be combining them into one presentation.
Due to our actual PDR being so close to Thanksgiving, the advisers thought it would be a good idea to push the presentation back one week. Instead, our PDR will be on Tuesday, November 27 at 3:00 p.m. Once a room has been booked, we will create a flier and pass the information along.
While the bad news is that we are pushing a deadline to another time, the good news is that we get another attempt to present our PDR to our advisors! Next week we hope to have a more polished version of our presentation. Hopefully, we will be headed on the right track to our PDR.
Hello everyone. We met as a team for the first time in B term on Monday, November 5, 2012. Having not met for quite some time, we dove right into business. Prior to the meeting, the ME team worked on the heat properties and materials of the chassis and housing of the robot. They also calculated the propulsion and drag of the system using estimates for drag coefficients. They also uploaded a CAD model of the chassis and housing design to the SharePoint. It is lacking components and modules, which will be added at a later time.
The ECE team presented their work on the Abstract Hardware device. The schematic is 90% done and contains block diagrams for all of the systems. They are currently laying out the circuitry for revision 1 of the board. The ECE team also outlined the mandatory sensors and found a battery option and buck converters for the power distribution system. Finally, they are working on programing the device drivers using the NXP development board.
The CS team created a dataflow path, which included an itemized list of sensor and control inputs. They outlined that the decision making needs to interpret this data. Also, the CS team proposed a request for comments communication protocol for the SharePoint. They hope this will help sure up communication amongst team members.
Lastly, a the Preliminary Design Review (PDR) was scheduled for two weeks from now! We hope to have prototypes completed at this time to present. Next week we plan to do a run through of the PDR at our General Body Meeting.
Only one meeting into the term and we have hit the ground running. The countdown to the PDR has begun!