P14452: Dresser-Rand Compressor Wired Data Recorder

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Systems Design

Table of Contents

1 Benchmarking
2 Concept Development (generation, improvement, selection)
3 Functional Decomposition
4 Systems Architecture
5 Risk Assessment
- 5.1 Current Assessment
- 5.2 Previous Assessments
6 Navigation Links

Benchmarking

Existing Devices

Programmable Gain Amplifier: Maxim DS4420

8th Order LPF: Maxim MAX7403

Lipo Charging IC: Microchip MCP738831

Boost converter: TI tps61200

Concept Development (generation, improvement, selection)

Component Comparisons

Power Sources	Start/Stop Capture
Sensor Connectors	Sampling Selection
Device Mounting	High Pressure Solutions
High Temperature Solutions	Oily Environment Solutions
Data Storage	Processing and Control

Concept Generation

Concept 1	Concept 1 Components
Concept 2	Concept 2 Components
Concept 3	Concept 3 Components
Concept 4	Concept 4 Components
Existing Device: MSR145	MSR145 Components

Pugh Analyis

Criteria	Concept 1	Concept 2	Concept 3	Concept 4	MSR145
Cost	+	s	s	+	DATUM
Size	+	+	s	+
Easy Data Access	-	s	-	s
Lead Time	+	s	-	s
Accuracy	+	+	+	+
Easy to Setup	s	+	s	+
Durability	s	+	s	+
Robustness	+	s	s	+
Simple Design	s	s	-	-
+/-	5/1	4/0	2/3	6/1

Functional Decomposition

Functional Decomposition

Functional Decomposition

Functional Decomposition Source

Device Tree

Device Tree

Device Tree Source

Systems Architecture

System Architecture

System Architecture

Risk Assessment

Current Assessment

ID	Risk	Effect	Cause	Likelihood	Severity	Priority	Preventative Action	Owner
R1	Casing Rupture	Total System Failure	Material Failure	1	5	5	Prevent by selecting quality casing material and seals	Chris and Dennis
R2	Storage Full	Data Loss	Inadequate Storage	2	5	10	Capacity Theory and Testing	Bryan
R3	Poor Timestamp Accuracy	Unreliable Data	Poorly written code	2	4	8	Comparison of results with Lab DAQ	Bryan
R4	PCB Manufacturing Latency	Delays in Implementation and Testing	Poor PCB Design or Assembly	2	5	10	Designs will be verified by third-party	Matt
R5	Scope of the project is too broad	Failure to deliver complete device	Over ambitious planning	1	5	5	Iterative Design Plan (Stages)	Bryan
R6	Failure to Understand Customer Desires	Unsatisfied Customer	Poor Communication with Customer	2	5	10	Weekly Meetings with Customer	Team
R7	Poor Documentation	Future Project Iteration is more difficult	Failure to adequately document each system and subsystem	3	3	9	Monthly Documentation Review	Team

Previous Assessments

Risk Assessment I

Navigation Links

MSD I	MSD II	Overview
Planning & Execution Problem Definition Systems Design Detailed Design	Planning & Execution Build, Test, Document Final Presentation Technical Paper Poster	Home Photo Gallery Project Review