This creation system is a kind of multi-functional expiration detector of self-power supply,It include a first noumenon and one second ontology,The first noumenon includes one first room,The first noumenon has an air inlet and at least a venthole,There is a generator unit system to set what first room,It include a flabellum,The flabellum center includes a groove,There is a group of magnets to set in the what groove,There are a plurality of induction coil systems to be mutually separated with a gap with the group of magnets,Second this system in conjunction with the first noumenon,Second ontology includes one second room,There is a cover board system to close second room,There is a circuit board system to set what second room,Mainly system rotates flabellum by testee's air blowing and magnetic force line cutting Hou is allowed to generate electric power for this creation,And then the effect of reaching self-power supply.本創作係為一種自我供電多功能呼氣檢測儀，包含有一第一本體及一第二本體，該第一本體包含有一第一容室，該第一本體有一進氣口及至少一出氣孔，有一發電單元係置於該第一容室，包含有一扇葉，該扇葉中心包含有一凹槽，有一磁鐵組置於該凹槽中，有複數個感應線圈組係與所述磁鐵組相隔有一間隙，該第二本體係與該第一本體結合，該第二本體包含有一第二容室，有一蓋板係封閉所述第二容室，有一電路板係置於該第二容室，本創作主要係藉由受測者吹氣使扇葉轉動並讓磁力線切割後產生電力，進而達到自我供電之功效。
