Apparatus and method for testing air bag control unit of vehicle

A signal control apparatus testing an air bag control unit of a vehicle, the apparatus comprising:

• a shaker control unit sensing a first signal that is used to operate a shaker;
• a communication module receiving from the shaker control unit start-synchronizing information regarding the first signal;
• a synchronizing module time-synchronizing a second signal with the first signal using the start-synchronizing information;
• and
• a control module transferring the second signal to the air bag control unit such that the air bag control unit outputs a determining signal of whether an air bag operates through a sum-sensing signal obtained from the first signal and the second signal.

A method for testing an air bag control unit of a vehicle, the method comprising:

• (a) generating a first signal and start-synchronizing information corresponding to the first signal by a shaker control unit;
• (b) shaking an air bag control unit according to a frequency of the first signal by a shaker;
• (c) time-synchronizing a second signal with the first signal using the start-synchronizing information and transferring the second signal to the air bag control unit by a signal control unit;
• and
• (d) generating a sum-sensing signal from the first signal and the second signal, generating from the sum-sensing signal a determining signal of whether an air bag operates, and transferring the determining signal to the signal control unit by the air bag control unit.

A method for generating signal for testing an air bag control unit of a vehicle, the method comprising:

• (a) generating a first signal and start-synchronizing information corresponding to the first signal by a shaker control unit;
• (b) time-synchronizing the second signal with the first signal using the start-synchronizing information;
• and
• (c) transferring the second signal to an air bag control unit that the air bag control unit outputs a determining signal of whether an air bag operates from a sum-sensing signal obtained from the first signal and the second signal.

A method for processing a signal for testing an air bag control unit of a vehicle, the method comprising:

• (a) sensing a shaking signal corresponding to a frequency of a first signal generated by a shaker;
• (b) receiving a second signal time-synchronized with the first signal;
• (c) generating a sum-sensing signal from the first signal and the second signal;
• and
• (d) comparing the sum-sensing signal with a pre-set air bag operation reference value, and outputting a determining signal of whether an air bag operates.