초록 ▼

A gas detecting apparatus incorporates a number of gas detecting elements which react with a variety of gases and exhibit gas sensitivities differing from one another in dependence on the gas species. The detection patterns obtained by quantitizing the detection outputs of the gas detecting elements

A gas detecting apparatus incorporates a number of gas detecting elements which react with a variety of gases and exhibit gas sensitivities differing from one another in dependence on the gas species. The detection patterns obtained by quantitizing the detection outputs of the gas detecting elements are compared with a plurality of standard patterns prepared previously for assumed combinations of gas species and concentrations thereof. On the basis of the standard pattern which is same or most similar to the detection pattern, the gas species is identified.

대표청구항 ▼

A gas detecting apparatus comprising: a plurality of gas detecting semiconductor elements having gas detection characteristics differing from one another; storage means for storing a plurality of standard patterns prepared by measuring previously the gas detection characteristics of said gas detecti

A gas detecting apparatus comprising: a plurality of gas detecting semiconductor elements having gas detection characteristics differing from one another; storage means for storing a plurality of standard patterns prepared by measuring previously the gas detection characteristics of said gas detecting semiconductor elements in dependence on species of gas components and mixing ratios thereof and patterning the measured detection characteristics; and arithmetic means for arithmetically processing gas detection outputs of said plural gas detecting semiconductor elements, said arithmetic means including means for comparing a detected pattern reproduced from gas detection outputs of said plural gas detecting semiconductor elements with said standard patterns stored in said storage means for identifying the species of a gas to be detected.