A portable device for monitoring environmental air quality includes a main body and at least one actuating and sensing module. The actuating and sensing module is disposed in the main body. The actuating and sensing module includes a carrier, at least one sensor, at least one actuating device, a driving and transmitting controller and a battery. The sensor, the actuating device, the driving and transmitting controller and the battery are disposed on the carrier. The actuating device is enabled to transport fluid to flow toward the sensor so as to make the fluid measured by the sensor and transmit an output data of the monitored data to a connection device. The information carried in the output data may be displayed, stored and transmitted by the connection device, whereby users can take precautions against the air pollution immediately to prevent from the ill influence on human health.

An actuating and sensing module includes a main body, an actuator and a gas sensor. The main body includes a partition, an inlet and an outlet. The space inside the main body is divided into a first compartment and a second compartment by the partition. The inlet and the outlet are in fluid communication with the first compartment and the second compartment respectively. The inlet, the first compartment, a communicating hole, the second compartment and the outlet form a gas channel within the main body. The actuator is sealed and disposed between the main body and the partition in the second compartment, wherein gas is introduced into the first compartment through the inlet, transported to the second compartment through the communicating hole, and discharged through the outlet by the actuator. The gas sensor is disposed in the first compartment and separated from the actuator for monitoring the gas on a surface thereof.

A gas detecting device includes a casing, at least one gas transporting actuator, at least one valve and at least one external sensor. The easing has an airflow chamber, an inlet, a branch channel and a connection channel. The airflow chamber communicates with an environment outside the casing through the inlet, and the branch channel communicates with the airflow chamber and the connection channel. The gas transporting actuator is disposed within the branch channel for transporting air into the airflow chamber and the branch channel from the inlet, and has a nozzle plate, a chamber frame, an actuator, an insulation frame and a conducting frame. The valve is disposed between the connection channel and the branch channel for controlling the air to flow into the connection channel. The external sensor is detachably disposed within the connection channel and has a sensor for measuring the air in the connection channel.

A gas detecting device includes a casing, at least one gas transporting actuator, at least one valve and at least one external sensor. The casing has an airflow chamber, an inlet, a branch channel and a connection channel. The airflow chamber communicates with an environment outside the casing through the inlet, and the branch channel communicates with the airflow chamber and the connection channel. The gas transporting actuator is disposed on the branch channel for transporting air into the airflow chamber and the branch channel from the inlet and has a gas inlet plate, a resonance plate and a piezoelectric actuator. The valve is disposed between the connection channel and the branch channel for controlling the air to flow into the connection channel. The external sensor is detachably disposed in the connection channel and has a sensor for measuring the air in the connection channel.

A lubricant deterioration detection device of the present invention includes a gas sensor that selectively detects a carbonyl compound. The gas sensor is configured to detect the carbonyl compound from at least one of formaldehyde, acetaldehyde, propanal, butanal, pentanal, n-hexanal, n-heptanal, formic acid, and acetic acid. The detection deterioration device further includes an oil removal portion that removes an oil mist generated from the lubricant.

A system, a computer readable storage medium, and a method for automatically siting for air quality monitoring stations includes collecting from air quality monitoring stations air pollution concentration data, collecting from meteorological stations meteorological data, and interpolating, by the at least one or more processors, the air pollution concentration data to provide interpolated air pollution concentration data. The method and system can further cluster the interpolated air pollution concentration data and the meteorological data to provide clustered data and select a candidate site for an air monitoring station using the clustered data. The method and system can further evaluate a relationship of the air pollution concentration data with the meteorological data by weighting the air pollution data with the meteorological data.

Device for improving an optical detecting smoke apparatus and implementing thereof. Apparatus and methods for detecting the presence of smoke in a small, long-lasting smoke detector are disclosed. Specifically, the present disclosure shows how to build one or more optimized blocking members in a smoke detector to augment signal to noise ratio. This is performed while keeping the reflections from the housing structure to a very low value while satisfying all the other peripheral needs of fast response to smoke and preventing ambient light. This allows very small measurements of light scattering of the smoke particles to be reliable in a device resistant to the negative effects of dust. In particular, geometrical optical elements, e.g., cap and optical defection elements, are disclosed.

A microfabricated spectrometer uses at least one filter to discriminate the frequency components of an incoming RF signal. The filter center frequencies are chosen to correspond to wavelengths of target species which may be present in the gas, and radiating at a characteristic frequency.

Method and device for the analysis of a gas sample; the method provides for the sample to be conveyed from an inlet along a feeding duct and from the feeding duct, divided into equal portions, along a plurality of passage channels and through a plurality of detecting stations; in the area of each detecting station a sensor is arranged, which detects a different characteristic of the sample; the gas sample portions are conveyed directly and precisely onto the sensors so as to increase the speed and sensitivity of the detection.

A particle detecting module includes a main body, a particle monitoring base, an actuator, a heater and a sensor. The main body has a first and a second compartment. The main body has an inlet, a hot gas exhausting opening and an outlet. The inlet and the hot gas exhausting opening are in fluid communication with the first compartment. The outlet is in fluid communication with the second compartment. A communicating opening is communicated with the first and the second compartment. The particle monitoring base is disposed between the first compartment and the supporting partition plate. The first compartment is heated to maintain a monitor standard level of humidity in the first compartment. The sensor is disposed adjacent to the supporting partition plate and located in a monitoring channel of the particle monitoring base, thereby monitoring the gas. The particle detecting module can be applied to a slim portable device.