A sensitive mechanism of micromachined airflow omnibearing level posture is introduced.There is a non-closure annulus heat source in the airtight space

and around the heat source

there are eight parallel heat resistance wire composed omnibearing level posture sensitive element.Signal processing circuit is composed of presignal circuit and digital circuit

to obtain voltage

omnibearing signal synthesis and sensitivity compensation of omnibearing tile angle signal.It is testified that resolution is prior to 0.1°

the scope of azimuth is 360°

the scope of tile angle is 20°.The sensor is not only in small size but also in simply crafting.It is good in output consistency of sensitive element and suitable for mass production.