Date

Wed, October 28th

PDDR.pptx

Meeting Recording Here

Attendees

Goals

  • Get feedback from customer of implementation on sensor interfaces and design work performed

Agenda and discussion notes

TimeItemWhoNotes
2 min System Level OverviewJoseph Even  Notes/discussion here
10 min  ADC Selection/Configuration/ImplementationJoseph Even Notes/discussion here
10 min IEPE InterfaceJoseph Even Notes/discussion here
6 min Full-Bridge InterfaceJoseph Even Notes/discussion here
8 min Thermocouple InterfaceJared Bandru Notes/discussion here
8 min Current Loop InterfaceAnthony Bacchetta Notes/discussion here
8 min  Ethernet ImplementationAnthony Bacchetta Notes/discussion here
6 min Micro/SoftwareJay Mantini Notes/discussion here
12 min  Voltage RegulationJared Bandru Notes/discussion here
4 minBox ConstructionBen Hebert Notes/discussion here
2 minData VisualizationBen Hebert Notes/discussion here
2 minRisk Management UpdateJared Bandru Notes/discussion here

Issues Raised

  • ADC Voltage reference error may be a significant portion of error
  • Current ADC Selection should be revisited due to SPI configuration
  • In general, anything which alters a signal adds error, this should be considered for all subsystems
  • A MAX Breakout should be used for thermocouple testing rather than SparkFun
  • Might be almost impossible to source a current limiting diode over 18 mA for current loop
  • Something should be added in the data output to indicate if a data point is new or stale
  • USB and LDO power draws can conflict, may want to raise LDO voltage and add a diode to correct it
  • Can decouple saved data from visualized data

Action items

  • Select alternative ADC