Inflatable Restraint Side Impact Sensor (SIS)

INFLATABLE RESTRAINT SIDE IMPACT SENSOR (SIS)

The side impact sensor (SIS) contains a sensing device which monitors vehicle acceleration and velocity changes to detect side collisions that are sever enough to warrant side SIR deployment. The SIS is not part of the deployment loop, but instead provides an input to the SDM. The SDM contains a microprocessor that performs calculations using the measured accelerations and compares these calculations to a value stored in memory.