Patent application number | Description | Published |
20090135880 | TEMPERATURE SENSOR PROBE AND MANUFACTURING METHOD OF THE SAME - To provide a temperature sensor probe that can conduct stable measurements, and the manufacturing method of the same. The temperature sensor probe related to the present invention provides: a fluorescent material that is a mixture of a fluorescent substance and a transparent material; a thermosensitive part having a concave part in which the fluorescent material is arranged; a waveguide route rod that propagates excitation light, which is irradiated on the fluorescent material, and fluorescent light, which is produced by the fluorescent substance; and a protective tube that covers the side surfaces of the waveguide route rod. Then, the fluorescent material is affixed to the tip of the waveguide route rod using the transparent material, and the waveguide route rod bites into the fluorescent material. | 05-28-2009 |
20090135881 | TEMPERATURE SENSOR PROBE - To provide a temperature sensor probe that can take stable measurements, and a manufacturing method thereof. The temperature sensor probe related to the present invention is a temperature sensor probe for measuring temperature using a fluorescent substance that changes fluorescent characteristics depending on temperature. Then, a powdered fluorescent substance, a guide wave route member that propagates excitation light, which is irradiated on the fluorescent substance, and fluorescent light, which is produced by the fluorescent substance, are provided. Further, the particle size of the powdered fluorescent substance is confined to the range of 60 to 100 μm. | 05-28-2009 |
20090157346 | TEMPERATURE SENSOR AND TEMPERATURE MEASURING METHOD - A temperature sensor for measuring temperature in accordance with a time-of-life of a fluorescent light that is produced by a fluorescent material, and is provided with a light source for imaging an excitation light, a fluorescent material for producing fluorescent light by the excitation light, a photoreceptor element for detecting the fluorescent light and outputting a fluorescent light signal in accordance with the fluorescent light intensity, and a signal processing circuit for calculating a temperature based on the fluorescent light signal from the photoreceptor element, where the signal processing circuit calculates integral values for the fluorescent light signals in the respective intervals A through C that have identical time durations, and then, based on the integral values, for two intervals, calculates a difference value, and then calculates a ratio of two difference values, to be a variable that varies in accordance with the temperature, and then references the relationship between the temperature and the ratio between difference values, stored in advance, to convert the calculated variable into the temperature. | 06-18-2009 |
20090245326 | FLUORESCENCE TEMPERATURE SENSOR - To provide a fluorescent temperature sensor wherein light is propagated reliably with an easy adjustment. A fluorescent temperature sensor for producing a temperature signal from fluorescent light of an optically excited fluorescent material includes: a light emitting device for projecting light to the fluorescent material; a photoreceiving element for receiving fluorescent light emitted from the fluorescent material | 10-01-2009 |
20090261751 | FLUORESCENT LIGHT TEMPERATURE SENSOR - A fluorescent light temperature sensor for producing a temperature signal from a fluorescent light of an optically stimulated fluorescent material is provided with: an LED for projecting light onto the fluorescent material; a driving circuit for driving the light projecting element; a photo diode for receiving the fluorescent light that is emitted from the fluorescent material; a signal processing circuit for producing the temperature signal from the output signal from the photo diode; and an APC circuit for controlling the driving of the driving circuit so as to maintain a uniform light projecting intensity from the LED based on the output signal of the photo diode. | 10-22-2009 |
20090296770 | FLUORESCENT TEMPERATURE SENSOR - To provide a fluorescent temperature sensor capable of identifying easily the location of a failure. A fluorescent temperature sensor for producing a temperature signal from fluorescent light from a fluorescent material and that has been optically stimulated comprises a light projecting module having an LED for projecting light at the fluorescent material and a second photodiode for receiving light emitted from the LED and a light receiving module having a first photodiode for receiving the light emitted from the fluorescent material, where the location of a failure in the sensor can be identified based on, at least, the output signal from the second photodiode. | 12-03-2009 |
20090296778 | FLUORESCENT TEMPERATURE SENSOR - To use a simple structure to provide a fluorescent temperature sensor with increased accuracy through increasing the fluorescent light intensity of the fluorescent materials. A fluorescent temperature sensor for producing a temperature signal from a fluorescent light of a fluorescent material that is optically stimulated is provided with an LED for projecting light onto the fluorescent material, a photodiode for receiving the fluorescent light that is emitted by the fluorescent material, and a signal processing circuit for generating the temperature signal from the output of the photodiode. Optical fibers for the projected light, for conveying the light from the LED to the fluorescent material, and optical fibers for the received light, for conveying the light from the fluorescent material to the photodiode, are separated and independent from each other on one end side thereof, facing the respective elements, and on the other end side, which faces the fluorescent material, are bundled so as to be mixed together. | 12-03-2009 |
20090301208 | Differential pressure measuring system and differential pressure measuring method - A differential pressure measuring system includes a light source for emitting a light, a first transducer for attenuating the intensity of the emitted light in a first range, depending on a first pressure, and providing a first light, a second transducer for attenuating the intensity of the first light in a second range, depending on a second pressure, and providing a second light, a feedback circuit for adjusting the intensity of the emitted light to maintain the intensity of the second light in the second range constant, and a measuring module for measuring a differential pressure between the first and second pressures, based on the intensities of the second light in the first and second ranges. | 12-10-2009 |
20130316395 | OPTICAL PARTICLE DETECTING DEVICE AND PARTICLE DETECTING METHOD - An optical particle detecting device includes a light source that emits light, an optical fiber that carries the emitted light, an emission-side condensing lens that condenses the light emitted from an end portion of the optical fiber, and a jet mechanism that causes an airstream including a particle to cut across the beam condensed by the emission-side condensing lens. | 11-28-2013 |
20130342838 | OPTICAL PARTICLE DETECTING DEVICE AND PARTICLE DETECTING METHOD - An optical particle detecting device including a light source that emits an inspection light, a converting unit that converts the inspection light into collimated light, a focusing reflecting mirror that reflects toward a focal point the inspection light that has been converted into collimated light, a jet mechanism that causes an airstream including a particle to jet into the focal point of the focusing reflecting mirror, and a detecting portion that detects either scattered light or fluorescence produced by the particle included in the airstream being illuminated by the inspection light. | 12-26-2013 |