| 摘要 |
A system checks the operability of electrical-based components (10, 14, 17, 19) in a breathing equipment (16), such as a Self-Contained Breathing Apparatus (SCAB), for example. The system includes a microprocessor (7) which is communicatively coupled with the electrical-based components (10, 14, 17, 19). After a power-up of the breathing equipment, the microprocessor (7) receives a signal from the electrical-based components (10, 14, 17, 19) indicating the operational state of that particular component. If the signal is not received by the microprocessor (7), or the signal deviates from a predetermined threshold, then that electrical-based component (10, 14, 17, 19) has failed to function properly. In that case, a visual indication of the failure is provided to a user of the breathing equipment (16). In addition, the system provides a visual identification of whether the microprocessor (7) itself is malfunctioning. A method is also provided for checking the operability of electrical-based components (10, 14, 17, 19) in the breathing equipment (16).
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