A detecting device for detecting liquid or colloid, comprising: a light emitting device, configured to emit first light, wherein a first angle between a first emitting direction of the first light and a surface when the detecting device is located on the surface, wherein the first angle is larger than 0° and smaller than 90°; an optical sensor, configured to detect first optical data generated based on the first light; and a processing circuit, configured to determine if the liquid or the colloid exists in a predetermined range of the detecting device based on the first optical data. An automatic cleaner applying the detecting device is also disclosed.

A detecting device for detecting liquid or colloid, comprising: a light emitting device, configured to emit first light, wherein a first angle between a first emitting direction of the first light and a surface when the detecting device is located on the surface, wherein the first angle is larger than 0° and smaller than 90°; an optical sensor, configured to detect first optical data generated based on the first light; and a processing circuit, configured to determine if the liquid or the colloid exists in a predetermined range of the detecting device based on the first optical data. An automatic cleaner applying the detecting device is also disclosed.

A material determining device comprising a first image sensor, a second image sensor, and a light source is provided. The material determining method comprises: (a) sensing a first image by the first image sensor according to light from the light source; (b) sensing a second image by the second image sensor according to the light; and (c) determining whether material corresponding to material images in the first image and the second image is first type of material or second type of material, according to locations of the material images in the first image and the second image and according to shapes of the material images in the first image and the second image. By this way an electronic device using the material determining device can properly operate according to the type of material.

A method and system can obtain real time property measurements of a fluid comprising a formation fluid downhole, real time measurements of an amount of an interactive component of the fluid downhole, and real time measurements of an amount of a non-interactive component of the fluid downhole. The method and system further includes determining a total amount of the interactive component in the fluid or a contamination level of the formation fluid at a time of interest based on the real time property measurements of the fluid downhole and the real time measurements of the amounts of the interactive component and non-interactive component downhole. The real time measurements of the amount of the interactive component downhole are real time measurements of the amount of the interactive component in its free form downhole, and the property can be scaled with the contamination level.

A continuous dust accumulation monitoring system, device and method monitors and measures dust accumulation via an enclosure and a machine vision subsystem which can include a digital camera. A dirty optics detection subsystem monitors optical clarity and can invoke a cleaning assembly to help maintain clarity of optics for monitoring and measuring dust accumulation.

A continuous dust accumulation monitoring system, device and method monitors and measures dust accumulation via an enclosure and a machine vision subsystem which can include a digital camera. A dirty optics detection subsystem monitors optical clarity and can invoke a cleaning assembly to help maintain clarity of optics for monitoring and measuring dust accumulation.

A process for detecting oil or lubricant contamination in a manufactured product, the process comprising adding at least two fluorescent taggants to oils or lubricants contained in processing machinery for said product, irradiating said product, causing at least one of said taggants to fluoresce and detecting radiation emitted by said fluorescing taggant in an oil-contaminated product.

A process for detecting oil or lubricant contamination in a manufactured product, the process comprising adding at least two fluorescent taggants to oils or lubricants contained in processing machinery for said product, irradiating said product, causing at least one of said taggants to fluoresce and detecting radiation emitted by said fluorescing taggant in an oil-contaminated product.

The air condition measurement apparatus according to various embodiments of the present invention comprises: a housing comprising a first space and a second space therein; a light-emitting unit which is positioned inside the housing, comprises a first lens, and radiates light to air flowing into the housing; a light-receiving unit which is positioned inside the housing, comprises a second lens, and receives reflected light formed from the reflection of the radiated light, radiated from the light-emitting unit, by foreign substances included in the air; a blocking member which transmits the radiated light or the reflected light and separates the first space, in which the light-emitting unit or the light-receiving unit is disposed, from the second space; and a control unit, wherein the control unit may be configured to measure the condition of air on the basis of a signal corresponding to the reflected light received by the light-receiving unit. Other various embodiments may be possible.

An abnormality in an imaging apparatus configured to generate an image or in an optical member located on an optical path for capturing the image can be accurately determined, irrespective of the environment. An image processing apparatus includes a first receiver configured to receive a first image, a second receiver configured to receive a second image having an imaging range that includes at least a portion of an imaging range of the first image, and a controller configured to determine an abnormality in the first image or the second image based on a common portion in the imaging ranges of the first image and the second image.