摘要:
An apparatus for monitoring the performance of a distributed system is provided. The distributed system comprises a plurality of cooperating units disposed in a communications network. The apparatus comprises a plurality of diagnostic components wherein each unit of the system comprises at least one of the diagnostic components. Each diagnostic component comprises a sensor, a data reduction module, a transceiver and a data analysis module. The sensors sense unit performance characteristics and represent the characteristics as raw data. The data reduction module receives and processes the raw data produced by the sensors to generate reduced data. The transceiver receives the reduced data from the data reduction module and transmits and receives the reduced data to and from the units using the network. The data analysis module accepts and analyzes the reduced data from the transceiver to produce performance data related to the distributed system.
摘要:
A method for controlling a laundering process includes determining a concentration of a detergent within a wash fluid during at least one cycle of an article laundering process, and dynamically adjusting at least one characteristic of the laundering process based at least in part upon the determined concentration of the detergent. An apparatus for controlling a laundering process includes a fluid chamber to contain a wash fluid, a sensor coupled to the fluid chamber to determine a detergent concentration within the wash fluid, and a controller coupled to the sensor and configured to dynamically adjust at least one characteristic of the laundering process based at least in part upon the determined detergent concentration.
摘要:
An authentication system may comprise: a first light source, a second light source, and at least three optically filtered light sensing devices. The first light source can have a first light source spectral distribution and can be capable of providing sufficient excitation to produce a photoluminescent emission from a medium comprising a luminescent tag and a color. The second light source can have a visible multi-wavelength spectral distribution and can be capable of providing sufficient visible multi-wavelength illumination of the medium to generate a second analog response. Each light sensing device can have a different device spectral sensitivity range.
摘要:
A portable system and method for measuring the concentration of multiple chemical or biological substances where an onsite analysis of such substances is needed. The new and original handheld sensor system uses a disposable optical test element and a spectroscopic detector that measures the test element response to specific analytes through a change in light absorbance, luminescence, and other forms of light-based response. In this way, reflection light intensities indicative of the test element response can be used to measure the concentration of the target analytes. The sensor system is also capable of being interfaced to an information processing unit or computer so that analytical data can be manipulated or stored electronically.
摘要:
A system and method employing optical disc drives for quantitative analysis of physical, chemical and biochemical parameters are provided. The system includes a robotic arm for transmitting a disc including at least one sensor spot through a variety of stations that include dipping the disc into a source of a compound, removing excess amounts of the source, optically scanning the disc, and discarding the disc. The optical drive may be a stand-alone reader in communication with an external computing device. The output of the optical scan may be transmitted from the optical scanner to the computing device via universal serial bus, Ethernet interface, or wireless connection.
摘要:
In one embodiment, a method for authenticating that a test polymer is an authenticatable polymer is disclosed wherein the authenticatable polymer comprises a substrate polymer and a thermochromic compound, the thermochromic compound having a first signal at a first temperature and at an authenticating wavelength, and a second signal at an authenticating temperature and the authenticating wavelength, the first and second signals being different, and the authenticating temperature being greater than the first temperature, the method comprising subjecting the test polymer to a stimulus sufficient to raise a portion of the test polymer to the authenticating temperature to create a heated portion, determining a test signal of the heated portion of the test polymer at the authenticating wavelength, and authenticating that the test polymer is an authenticatable polymer if the test signal is the same as an authenticating signal of the authenticatable polymer.
摘要:
A method for determining detergent concentration includes performing a photometric analysis of a wash fluid during an article laundering process, and determining a concentration of a detergent within the wash fluid based at least in part upon the photometric analysis. Furthermore, an apparatus for determining detergent concentration includes a fluid chamber to hold a wash fluid for washing articles, and an optical sensor optically coupled to the fluid chamber to determine a detergent concentration within the wash fluid based at least in part upon photometric properties of the wash fluid.
摘要:
A device for emission of electromagnetic radiation comprises a source of atomic particles and a collector disposed to receive atomic particles from the source. The collector comprises an emission medium, the medium comprising a crystal having a spatial dimension in the range from about 10 nanometers to about 50 micrometers, wherein the emission medium has the capability to generate opposing charge pairs upon absorption of atomic particles from the source and to emit electromagnetic radiation upon recombination of the pairs. The emission may be via spontaneous emission or, in certain embodiments, by stimulated emission. A laser assembly comprising this device, and methods for making the device are also presented herein.
摘要:
A method of quantitatively measuring the concentration of a chemical species in a sample solution with a sensor film. A hydrogel sensor film is prepared having a chemical composition comprising an indicator that changes its optical property in the ultra-violet, visible or near-infrared spectral range upon being exposed to the chemical species in the sample solution. The film is exposed to a fixed amount of the sample solution. The concentration of the chemical species in the sample solution is quantified using the average absorbance measured from the sensor film.
摘要:
A microfluidic channel is provided. The microfluidic channel includes a first substrate having at least one microfluidic channel pattern. Further, the microfluidic channel includes a porous material disposed on the first substrate and occupying the at least one microfluidic channel pattern.