Patent ID: 11865900
Assignee: MICROJET TECHNOLOGY CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 10:
11. The method for preventing and handling in-car air pollution according to claim 10, wherein the gas detection main body each comprises:
a base, having:
a first surface;
a second surface opposite to the first surface;
a laser configuration region hollowed out from the first surface to the second surface;
a gas inlet groove recessed from the second surface and located adjacent to the laser configuration region, wherein the gas inlet groove has a gas inlet through hole and two lateral walls; two light permissive windows penetrate the two lateral walls of the gas inlet groove and in communication with the laser configuration region;
a gas-guiding component loading region recessed from the second surface and in communication with the gas inlet groove, wherein a gas flowing hole penetrates a bottom surface of the gas-guiding component loading region; and
a gas outlet groove recessed from a portion of the first surface corresponding to the bottom surface of the gas-guiding component loading region, and hollowed out from the first surface to the second surface in a region where the first surface is not aligned with the gas-guiding component loading region, wherein the gas outlet groove is in communication with the gas flowing hole and has a gas outlet through hole;

a piezoelectric actuator received in the gas-guiding component loading region;
a driving circuit board attached to the second surface of the base;
a laser component disposed on and electrically connected to the driving circuit board, wherein the laser component is received in the laser configuration region, and a path of a light beam emitted by the laser component passes through the light permissive windows and is orthogonal to the gas inlet groove;
a particulate sensor disposed on and electrically connected to the driving circuit board, wherein the particulate sensor is received in a portion of the gas inlet groove where the path of the light beam emitted by the laser component is orthogonal thereto, so that the particulate sensor detects particulates in the polluted gas passing through the gas inlet groove that is illuminated by the light beam of the laser component;
a gas sensor disposed on and electrically connected to the driving circuit board, wherein the gas sensor is received in the gas outlet groove, so that the gas sensor detects the polluted gas introduced into the gas outlet groove; and
an outer cap covering the base and having a side plate, and the side plate has a gas inlet opening and a gas outlet opening, the gas inlet opening is corresponding to the gas inlet through hole of the base, and the gas outlet opening is corresponding to the gas outlet through hole of the base;
wherein the outer cap covers the base, and the driving circuit board is attached to the second surface of the base, so that the gas inlet groove defines a gas inlet path and the gas outlet groove defines a gas outlet path, thereby facilitating the piezoelectric actuator to introduce the polluted gas outside the gas inlet through hole of the base into the gas inlet path defined by the gas inlet groove from the gas inlet opening; the polluted gas passes through the particulate sensor so that the particulate sensor detects a particulate concentration of the particulates in the polluted gas; and the polluted gas is discharged into the gas outlet path defined by the gas outlet groove from the gas flowing hole, and discharged out of the gas detection main body from the gas outlet through hole and the gas outlet opening of the base.