02 Sensor filter

A method of filtering an oxygen sensor signal comprising:

• obtaining said oxygen sensor signal;
• comparing said oxygen sensor signal to an average oxygen sensor signal value;
• forcing said oxygen sensor signal to a high signal value if said oxygen sensor signal is greater than said average oxygen sensor signal value over a first pre-selected period of time;
• incrementing a high signal counter if said oxygen sensor signal is greater than said average oxygen sensor signal value;
• and
• forcing said oxygen sensor signal to said high signal value if said high signal counter is greater than a signal count threshold.

A method of filtering an oxygen sensor signal comprising:

• obtaining said oxygen sensor signal;
• comparing said oxygen sensor signal to an average oxygen sensor signal value;
• forcing said oxygen sensor signal to a high signal value if said oxygen sensor signal is greater than said average oxygen sensor signal value over a first pre-selected period of time;
• forcing said oxygen sensor signal to a low signal value if said oxygen sensor signal is less than said average oxygen sensor signal value over a second pre-selected period of time;
• incrementing a low signal counter if said oxygen sensor signal is less than said average oxygen sensor signal value;
• and
• forcing said oxygen sensor signal to said low signal value if said low signal counter is greater than a signal count threshold.