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| -rw-r--r-- | paper/safety-reset-paper.tex | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/paper/safety-reset-paper.tex b/paper/safety-reset-paper.tex index a7d4344..75fca76 100644 --- a/paper/safety-reset-paper.tex +++ b/paper/safety-reset-paper.tex @@ -125,8 +125,9 @@ fundamentally different in both generation and detection from systems such as tr on grid voltage, but leave the underlying grid frequency itself unaffected. The safety reset controller is an off-the-shelf microcontroller much smaller than the one used for the meter's main application controller. It measures grid frequency from a voltage waveform acquired using its internal analog-to-digital-converter (ADC) directly connected -to the mains voltage input through a resistive divider chain. The use of an off-the-shelf microcontroller keeps the -implementation overhead of our solution very low in both per-unit and engineering cost. +to the mains voltage input through a resistive divider chain. By using of an off-the-shelf microcontroller we keep the +implementation overhead of our solution low in engineering cost compared to an ASIC. By keeping its firmware small, we +can use a simpler and less expensive microcontroller, keeping per-unit implementation cost low. \begin{figure} \centering |