초록 ▼

The apparatus provides for the determination of the instantaneous phase in the respiratory cycle, subject's average respiration rate and the provision of ventilatory assistance. A microprocessor (16) receives an airflow signal from a pressure transducer (18) coupled to a port (17) at a mask (11). Th

The apparatus provides for the determination of the instantaneous phase in the respiratory cycle, subject's average respiration rate and the provision of ventilatory assistance. A microprocessor (16) receives an airflow signal from a pressure transducer (18) coupled to a port (17) at a mask (11). The microprocessor (16) controls a servo (19), that in turn controls the fan motor (20) and thus the pressure of air delivered by the blower (10). The blower (10) is coupled to a subject's mask (ii) by a conduit (12). The invention seeks to address the following goals: while the subject is awake and making substantial efforts the delivered assistance should be closely matched in phase with the subject's efforts; the machine should automatically adjust the degree of assistance to maintain at least a specified minimum ventilation without relying on the integrity of the subject's chemoreflexes; and it should continue to work correctly in the presence of large leaks.

대표청구항 ▼

The apparatus provides for the determination of the instantaneous phase in the respiratory cycle, subject's average respiration rate and the provision of ventilatory assistance. A microprocessor (16) receives an airflow signal from a pressure transducer (18) coupled to a port (17) at a mask (11). Th

The apparatus provides for the determination of the instantaneous phase in the respiratory cycle, subject's average respiration rate and the provision of ventilatory assistance. A microprocessor (16) receives an airflow signal from a pressure transducer (18) coupled to a port (17) at a mask (11). The microprocessor (16) controls a servo (19), that in turn controls the fan motor (20) and thus the pressure of air delivered by the blower (10). The blower (10) is coupled to a subject's mask (ii) by a conduit (12). The invention seeks to address the following goals: while the subject is awake and making substantial efforts the delivered assistance should be closely matched in phase with the subject's efforts; the machine should automatically adjust the degree of assistance to maintain at least a specified minimum ventilation without relying on the integrity of the subject's chemoreflexes; and it should continue to work correctly in the presence of large leaks. magnet applied to the flywheel of an engine; and a second coil located in proximity to said flywheel such that a trigger pulse will be generated in said coil when said flywheel rotates, said coil in electrical communication with said trigger input such that said trigger pulse is received by said trigger input. 3. The controller for a capacitive discharge ignition system of claim 1 wherein said first switch is a thyristor. 4. The controller for a capacitive discharge ignition system of claim 2 wherein the voltage generated in said first coil is greater than 100 volts when said engine is running. 5. A capacitive discharge ignition system for an internal combustion engine having a rotating member comprising: a first magnet applied to the rotating member; a first coil located in proximity to the rotating member such that electrical energy is generated in said first coil by said first magnet as the rotating member rotates; a second magnet applied to the rotating member; a second coil located in proximity to the rotating member such that a trigger pulse will be generated in said second coil by said second magnet as the rotating member rotates; a controller having: a first input connected to said first coil for receiving said electrical energy to provide power for operation the controller; a second input connected to said second coil for receiving said trigger pulse; an output responsive to said trigger pulse; and a governor in communication with said output such that when the speed of the engine is below a threshold speed, an ignition pulse is produced at said output upon receipt of said trigger pulse and when the speed of the engine is above said threshold speed, an ignition pulse is not produced at said output upon receipt of said trigger pulse; and a spark coil connected to said output.