APPLICATION:
It is necessary to maintain a certain air-fuel delivery ratio for the rule of auto-let limitate.
That demanded the sensor record the mass flux of actual air and output a corresponding
Message to open-loop and closed-loop control circuit.

DESIGN:
The tiny machine’s sensor is fixed in the inset sensor’s channel of carrent. The inset is
Fit to combination with air filter or make use of a measure air intake to combination with
a channel which air enters. In accordance with different air flux, we choose different air
intake. The tiny machine’s measure system make use of a mixture circuit. When the air
flow reflow, it can check out the reflow by evaluating the diagraph data.

THE WORK PRINCIPLE:
The heated sensor break up calories the air of the inhalation. the air discharge is more high
when the calories lost more .the final difference in temperature can be the calculation of air
quality which flows through the sensor.
A mixture circuit can evaluate this diagraph date, then can be accurately measured the
Amount of the air discharge and its flowing direction.
The sensor can’t record the whole quality of the flowing-air but only parts can be tested to,
So the tested quality be used to calculate this current of air quality.