Star Coupler

Star Coupler
The star coupler with the 6 transmitter/receiver modules receives its power supply (5 V) from a secondary voltage transformer. The same applies for the two microprocessors. The individual byteflights to the satellites are connected to the star coupler. The star coupler transmits a synchronization pulse every 250 microseconds. Between these synchronization pulses, the telegrams are sent from and to the satellites (bidirectional communication) on the byteflight.
The satellites accommodate acceleration sensors and pressure sensors. These are the sensors that detect a crash. The satellites send the sensor data to the star coupler. The star coupler distributes the information to all the satellites. In this way, all the satellites have the same information at their disposal.
The SGM uses the information it receives to recognize a crash when it happens. The SGM compares the values with the algorithm in its processor and, if the impact is of sufficient severity, it uses the synchronization pulse to initiate the alarm mode. The alarm mode places the satellites in a triggerable state. The actuators required in any given situation are actuated, depending on the crash severity and the algorithms stored in the satellites.