Medical test cards for detecting analytes are provided including a substantially planar body, an analyte detection means, an opening feature, and an optical code. The analyte detection means is enclosed within the planar body and is configured to provide a colorimetric change when a portion of the analyte detection means is contacted with the analyte. The opening feature is configured to provide access to the analyte detection means and the optical code includes information identifying the analyte detection means. Uses of such medical test cards include accessing the analyte detection means enclosed within the planar body by using the opening feature and contacting the analyte detection means with the sample. The optical code is read using an imaging device to identify the analyte detection means and the analyte detection means is imaged following contact with the sample using the imaging device.

A device and a method of using the device for improving sensitivity, speed, and easy-to-use of a colorimetric assay of a liquid sample are provided. The device includes a first plate and a second plate, spacers, and a textured surface. The two plates each have a sample contact surface and are movable relative to each other into an open configuration or a closed configuration. The sample is deposited on one or both plates in the open configuration. Thereafter, the closed configuration is formed where the plates compress at least part of the deposited sample into a continuous layer. The textured surface is disposed on the sample contact surface of the second plate and has a textured structure that scatters light, from which an optical signal such as a colorimetric or fluorescent signal can be obtained for analyzing the sample.

An apparatus for determining the identity and/or quantity of a liquid fuel contained in a fuel transporting tank of a fuel transporting vehicle can comprise: a longitudinally extensive member having a first end and a second end, an internal volume from which liquid fuel in the tank is excluded, and a mounting arrangement configured for mounting in use of the longitudinally extensive member within and in fixed relation to the tank, said second end configured in use to be immersed in the liquid fuel in the tank. The longitudinally extensive member can further comprise: first and second pressure sensors spaced apart by a fixed distance, each said pressure sensor having a face exposed in use to the local hydrostatic pressure of the liquid fuel in the tank; and a colour sensing device comprising a light emitter and a light detector configured to detect light from the emitter, said emitter and detector being arranged such that in use light from the emitter incident on the detector passes through said liquid fuel in the tank. The apparatus can further comprise a data processing device configured to determine the identity of the liquid fuel based on said pressure measurements from said first and second pressure sensors and colour data from said colour sensing device.

The present invention relates to an apparatus for evaluating drying quality of an electrode, and the apparatus includes: an oven configured to provide a space in which an electrode is dried; a measuring unit configured to be positioned at an outlet of the oven and measure a color coordinate value of an electrode active material layer with respect to the dried electrode; and an determination unit configured to determine whether the electrode is dry from the color coordinate value, wherein the determination unit sets a reference value, and determines that a dry state of the electrode is defective if the measured color coordinate value is less than the reference value, and a difference between the measured color coordinate value and the reference value is more than a preset value.

A monitoring system is presented for monitoring plants' conditions in one or more plant growing areas. The system comprises: a data collection system configured and operable to provide characterization data about plants in said one or more plant growing areas, the data collection system comprising data collection modules of at least first and second different types, the first type data collection module comprising a first imaging device of predetermined first optical properties and the second type data collection module comprising a second imaging device of predetermined second optical properties different from the first optical properties, the characterization data provided by at least one of the first and second imaging devices being indicative of various parameters of the plants being imaged; and a control system configured and operable to be in data communication with an analyzer to be responsive to operational data received from the analyzer and being based on analysis of the image data indicative of one or more plants being imaged by the first type imaging device, to selectively activate the second type imaging device to apply the second type imaging to at least a part of said one or more plants.

The present invention provides a chemical sensor comprising a substrate, a first colorimetric sensor array exposed and arranged in a first accommodating space of the substrate and a second colorimetric sensor array arranged in a second accommodating space of the substrate. The second accommodating space is covered with an isolating layer to isolates liquid molecules but allows gas molecules to pass through. The first colorimetric sensor array changes from a first initial color to a first indicating color according to a volatile part and a non-volatile part of an analyte, and the second colorimetric sensor array changes from a second initial color to a second indicating color according to the volatile part of the analyte, so that information of the volatile part and the non-volatile part of the analyte can be obtained simultaneously.

An optical sorter includes a light source, a color sensor, a determination part configured to determine a foreign object and/or a defective product, a color shift amount calculation part configured to calculate, based on a color image acquired by the color sensor, an amount of a color shift that occurs due to the fact that at least two element groups out of an R element group, a G element group, and a B element group are spaced apart from each other in a transit direction of a sorting target, a speed calculation part configured to calculate a transit speed of the sorting target based on a separation distance between the at least two element groups in the transit direction, the color shift amount, and a scan time, which is a time required for the color sensor to scan the sorting target once, and a sorting device configured to perform a trajectory change operation for changing a trajectory of a specific sorting target determined based on a result of the determination by the determination part at a timing determined based on the transit speed calculated by the speed calculation part.

According to one embodiment, an inspection system for a secondary battery includes an image sensor, a detector, and an inspection processor. The image sensor captures an image of a fiber layer of an electrode structure of a secondary battery. The electrode structure includes an electrode and the fiber layer formed on a surface of the electrode. The electrode includes a current collector and an active material layer. The detector detects a color in data of the image captured with the image sensor. The inspection processor inspects a pinhole defect in the fiber layer based on the color detected with the detector.

A determining system includes an acquiring unit that acquires a color value of a target seal material, a storage unit that stores a color value of each of a plurality of candidate seal materials of different types, a color difference calculating unit that calculates a color difference between each of the candidate seal materials and the target seal material based on the color value of each of the candidate seal materials and the color value of the target seal material, a degree of coincidence calculating unit that calculates a degree of coincidence between each of the candidate seal materials and the target seal material based on the color difference between each of the candidate seal materials and the target seal material, and a determining unit that determines a type of the target seal material based on each of the degrees of coincidence calculated.

A device for automatic control of color tone of a reel of thread includes a frame supporting an arm on which a reel of thread is loadable, a meter configured to project a measuring beam onto a cylindrical portion of the reel of thread, the meter having a camera and an illuminator aligned with the camera, the illuminator being multispectral and configured to illuminate the reel of thread with different wavelengths. A computer provided with a screen with graphic interface and connected to the meter processes the classification of the reel of thread loaded on the arm on the basis of measurements performed by the meter.