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AWESILLO-SCOPE. Team 2 Yimin Xiao Jintao Zhang Bo Yuan Yang Yang. Overall Description.

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Presentation Transcript
awesillo scope

AWESILLO-SCOPE

Team 2

Yimin Xiao

Jintao Zhang

Bo Yuan

Yang Yang

overall description
Overall Description
  • The project we propose is a digital oscilloscope with playback function that provides almost any function of a typical oscilloscope, such as digital sampling, signal processing, auto-scale setting, cursor setting, reconstruction and visualization of signals. Additional features such as recording and replicating signals as a function generator, interacting with PC via USB and GUI display of signals will also be included.
major functions pssc
Major Functions / PSSC
  • An ability to sample analog V/I signal via BNC
  • An ability to reconstruct and display the sampled signal on VGA display
  • An ability to create general oscilloscope interface and realize basic functions
  • An ability to store/load the sampled signal to/from external memory
  • An ability to replay signal stored in external storage device
reliability and safety
Reliability and Safety
  • Critical Conditions
  • Major components for analysis
  • Failure mode, effects, and criticality analysis (FMECA)
possible critical conditions
Possible Critical Conditions
  • Power circuit Overload
    • Linear regulator failure
  • Overload of input voltage (Harm to product only)
    • User select wrong voltage input scale
    • Multiplexer did not work correctly
    • Zener diode failure
  • Input not acknowledged (Harm to product)
    • Amplifier overloaded
    • ATD channel failure
major components analysis
Major Components’ analysis

STM32 MCU

ℷp = 6.4305

MTTF: ~ 17 years

Xilinx Spartan-3E

ℷp = 3.99

MTTF: ~ 28.6years

major components analysis1
Major Components’ analysis

Zener Diode

ℷp = 0.128

MTTF: ~ 891 years

Linear Regulator

ℷp = 0.48

MTTF: ~ 238 years

major components analysis2
Major Components’ analysis

Instrumentation amplifier

ℷp = 0.00315 *

Analog MUX

ℷp = 0.158

MTTF: ~ 722 years

* Calculated by combination of internal/ external components.

failure analysis mode
Failure analysis Mode
  • A – Inputs, include circuitry and analog voltage
  • B – Power circuitry
  • C – FPGA , display unit
  • D – MCU, sampling process (digital value)
  • E – Transmission
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