Abstract: An electronic device casing includes a peripheral wall portion enclosing an outer circumference of a substrate provided with a connector, an opening portion formed in the peripheral wall portion to have an opening from which the connector is exposed to an exterior, an upper plate portion covering an upper part of the peripheral wall portion, and a protrusion portion protruding from an end part of the upper plate portion and covering an upper part of the connector exposed from the opening portion. The protrusion portion has a first end part connected to the upper plate portion, and a second end part opposite from the first end part in a protruding direction of the protrusion portion. The second end part is higher than the first end part.

Abstract: An occupant restraint system of a vehicle has an airbag, a pre-crash sensor which calculates a probability of a collision of a vehicle with an object and outputs a pre-crash signal indicating a prediction of the collision when the probability is higher than a predetermined value, a satellite sensor which detects a degree of acceleration of the vehicle and starts outputting an acceleration signal indicating the detected degree of acceleration in response to the pre-crash signal, and an airbag ECU which processes the acceleration signal to obtain a processing result and deploys the airbag when the processing result indicates a collision of the vehicle with the object. Therefore, because the airbag ECU does not start processing the acceleration signal until the satellite sensor outputs the acceleration signal in response to the pre-crash signal, a load on the airbag ECU can be alleviated.