US 2019/0376877 A1 · PORTABLE GAS DETECTING DEVICE

Abstract

A portable gas detecting device includes at least one detecting chamber, at least one gas sensor and at least one actuator. The gas sensor is disposed in the detecting chamber and configured for monitoring gas inside the detecting chamber. The actuator is disposed in the detecting chamber and includes a piezoelectric actuator. When an actuating signal is applied to the piezoelectric actuator and the piezoelectric actuator generates a resonance effect, the gas outside the detecting chamber is introduced into the detecting chamber for sampling. The actuator is driven by an instantaneous sampling pulse to control a trace of gas to flow into the detecting chamber for forming a stable airflow environment. In the stable airflow environment, a gas molecule is dissolved in or bonded to a reaction material on a surface of the gas sensor for reacting.

Claims12

Dependent claims

A portable gas detecting device, comprising:

at least one detecting chamber having at least one inlet and at least one outlet;
at least one gas sensor disposed in the detecting chamber and configured for monitoring gas inside the detecting chamber;
and
at least one actuator disposed in the detecting chamber and comprising a piezoelectric actuator generating a resonance effect when an actuating signal is applied to the piezoelectric actuator, by which the gas outside the detecting chamber is introduced into the detecting chamber for sampling, wherein the at least one actuator is driven by an instantaneous sampling pulse to control gas to flow into the detecting chamber for forming a stable airflow environment, wherein in the stable airflow environment, a gas molecule of the gas is dissolved in or bonded to a reaction material on a surface of the gas sensor for reacting.

1 more element

Dependencies are inferred from the claim text.

Portable gas detecting device

Life of this patent

Portable gas detecting device

Life of this patent

Abstract

Claims12