P16414: Toilet Use Sensor
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Build & Test Prep

Table of Contents

Team Vision for Build & Test Prep Phase

Looking back at the plan we formulated for Phase I, we believe we were thinking of what we would have completed by week 5 rather than week 2, as the plans are very ambitious. A large portion of the plans may now be seen at the end of this page in the Week 5 Vision. A summary of what we completed this phase is as follows:

Test Plan Summary

The test plans for every requirement as they currently stand may be viewed through the following link: Test Plans. This document will be updated as plans change and tests are performed. An example of one of the plans is below.

Test Plan for Engineering Requirement S13

Test Plan for Engineering Requirement S13

Engineering Requirements

CR ER# Importance Description Metric Direction/Range Target Marginal Comments Test Plans Concluded Condition
1.1, 2.5 S1 9 Percent of new users who detect system % Decrease 0 <5 None S1 Test Plan Not Complete
1.2 S2 9 Percent of grid electricity required (any point in system) % Decrease 0 <5 No grid electricity available S2 and S3 Test Plan Not Complete
2.1, 3.1 S3 3 Time system can be used without interruption days Increase >90 >45 None S2 and S3 Test Plan Not Complete
2.1 S4 3 Number of data points can be collected by counter number Increase 9999 999 None S4 Test Plan Not Complete
2.2 S5 9 Detects temperature with reasonable accuracy C Range +/- 1 +/- 3 None S5 and S6 Test Plan Not Complete
2.2 S6 3 Maximum temperature that can be monitored C Increase >80 >70 None S5 and S6 Test Plan Not Complete
2.3 S7 9 Accuracy of pH reading pH Increase +/-0.01 +/-0.1 None S7 and S8 Test Plan Not Complete
2.4 S8 9 Range of pH reading pH Range 0-14 2-12 None S7 and S8 Test Plan Not Complete
2.4 S9 9 Accuracy of moisture reading % Range +/-0.01 +/-0.1 None S9 and S10 Test Plan Not Complete
2.4 S10 9 Range of moisture reading is 0-100% (relative) binary _ yes yes None S9 and S10 Test Plan Not Complete
2.5 S11 0 Accuracy of oxygen reading % Range +/-0.01 +/-0.1 Unfeasible n/a Unfulfilled
2.5 S12 0 Range of oxygen reading binary _ yes yes Unfeasible n/a Unfulfilled
2.2, 2.3, 2.4, 2.5 S13 3 Frequency of pit readings number/day Increase 24 6 None S13 Test Plan Not Complete
3.2 S14 3 Number of times the system can be reused number Increase >100 >15 None S14 Test Plan Not Complete
3.3, 3.7 S15 1 Time it takes to set-up the system minutes Decrease <30 <60 None S15 Test Plan Not Complete
3.4 S16 1 Time it takes to tear down the system minutes Decrease <10 <20 None S16 Test Plan Not Complete
3.5 S17 3 Time it takes to record data minutes Decrease <10 <30 None S17 Test Plan Fufilled
3.5 S18 9 Cost of equipment to record data USD Decrease <20 <50 Not including laptop or phone n/a Not Complete
4.1, 4.3 S19 3 Cost of power system over 1 year USD Decrease <15 <100 Based off price of a pack of AA batteries n/a Not Complete
4.2 S20 9 Cost of total system USD Decrease <400 <1000 None n/a Not Complete
4.3 S21 3 Cost of consumable parts USD Decrease <15 <30 None n/a Not Complete
5.1 S22 9 Percent of parts exposed that are not weather resistant % Decrease 0 <10 Internal components do not need to be weather resistant S22 Test Plan Not Complete
5.2, 5.3 S23 3 Shortest lived part years Increase >3 >1 Fatigue calculation if mechanical part is used. Can be batteries S3 Test Plan Not Complete
5.3 S24 9 Percent of parts that are corrosion resistant exposed to pit % Increase 100 >90 None S4 Test Plan Not Complete
2.1 S25 9 Percentage of uses the system registers and counts % Increase 100 >90 None S25 and S26 Test Plan Not Complete
2.1 S26 9 Percentage of false positives the system counts % Decrease 0 <10 None S25 and S26 Test Plan Not Complete

Risk and Problem Tracking

Problem Tracking

Problem Tracking

Bill of Materials and Budget

Updated Bill of Materials

Updated Bill of Materials


Budget

Budget

We were given a budget of $500 for the design, test and build of the system. As of August 30, 2016, we have $370.91 available.

Summer Testing

Summer Sensor Data

Summer Sensor Data

The data our prototype collected shows us that the prototype ran for 86 hours or roughly a little over three and a half days. We found out that only one of the battery packs worked so we can get a little over ten days with the given set up; therefore our battery life needs improvement. One more concern is the sudden drop in temperature sensed. At about hour 34 temperature drops and stabilizes with very little movement. This points out the sensor may have stopped working properly, which we confirmed by testing. Moisture seems to have worked well overall and seems to be still performing adequetly after 3 months in the pit.

MSD 1 Review

Team Critique

Team Critique

Plans for MSD 2

Week 5 Vision

Team
Individual
Eren's Three Week Plan - Eren's Goals

Kendall's Three Week Plan - Kendall's Goals

Kiera's Three Week Plan - Kiera's Goals

Saul's Three Week Plan - Saul's Goals

Quinn's Three Week Plan - Quinn's Goals

Week 8 Vision

Week 12 Vision

Final Vision


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