| 摘要 |
<p>A shunt (34) is pivotally mounted to form a pendulum positioned between a reed switch (30) and a magnet (28). The shunt is formed of ferromagnetic material and is mounted such that as long as it remains between the reed switch and the magnet the reed switch remains open. The shunt is held or biased between the magnet and the reed switch by the force of the magnetic attraction between the shunt and the magnet. The mass of the shunt acts as both a tilt sensor (20) which responds to gravity and an accelerometer sensitive to crash-induced accelerations. The reed switch, magnet and shunt are mounted in a housing (22) which positions the reed switch and magnet and controls the maximum range of motion of the pendulum-mounted shunt.</p> |
