摘要:
A portable system for non-destructively measuring amount of coating on a metallic substrate based upon infrared absorbance includes a portable, hand-held measurement unit housed in a pistol-gripped case and an optical sensing unit that has an infrared source and a detector. The infrared source is configured to transmit infrared energy toward a metallic substrate having a coating thereon. The infrared energy passes through the coating, reflects off a surface of the substrate, passes back through the coating, and is detected by the detector. A processor correlates amount of infrared absorbance in the coating to amount of the coating. A base unit holds the hand-held measurement when not in use and charges a battery of the hand-held measurement unit. The base unit includes connectors for uploading and downloading data from and to the hand-held measurement unit and for communicating with an optional host computer.
摘要:
The invention relates to a transmission sensor (1) for measuring the turbidity of a fluid, comprising a first and a second measuring section (2, 3). A transmitter (6) emits electromagnetic radiation into the two measuring sections (2, 3). A first receiver (14) is allocated to the first measuring section (2) and a second receiver (15) is allocated to the second measuring section (3). The transmitter (6) is inserted into a transmitter carrier (8) in such a way that the transmitter (6) is forced to adopt a predetermined oriented position. The receivers (14, 15) are inserted into a receiver carrier (18) in such a way that each of said receivers (14, 15) is forced to adopt a predetermined oriented position. A transmitter carrier holder (9) forcibly positions the transmitter carrier (8) in a predetermined location and a receiver carrier holder (19) forcibly positions the receiver carrier (18) in a predetermined location.
摘要:
A handheld infrared camera having a lens assembly, an electric energy source and a handling elements for recording and handling information received via the lens assembly has an essentially elongate housing. The lens assembly is mounted at one end of the housing, the other end portion of which is formed as a user handle, the longitudinal axis of which preferably is inclined relative to the optical axis of the lens assembly to form an angle (nullalpha) with the optical axis. There are provided manual control elements for allowing single hand operation of the camera, and a visual control elements is intended to be viewed when holding and operating the camera away from the eye and the body of a user. The camera is advantageously provided with elements for wireless transmission of information from the camera.
摘要:
The invention relates to an infrared camera comprising detector means (2) sensitive for infrared radiation and optics for focusing an object (4) to be monitored on the detector means. A light source (8; 8null; 12; 17) is emitting a narrow beam within the visible wavelength region towards the object (4) to be imaged by the detector means.
摘要:
This device for detecting electromagnetic radiations, and in particular infrared radiations, implements a detection circuit associated with a reading circuit, the detection circuit consisting of an array of detection pixels (1), each of the said pixels consisting of a thermal detector of biased (3) bolometric type (2), and delivering an electric current representative of the detected radiation, the said current undergoing a double baselining, respectively: a global baselining carried out by means of a thermally isolated bolometer (8), ensuring the extraction from the said electric current, of a first current of constant value inherent to the biasing of the said thermal detector (2), an adaptive baselining specific to each of the pixels (1), carried out by means of a programmable current generator (9), specific to each of the pixels, generating a current for subtraction from the said signal, as a function of the dispersion inherent to the pixel considered relative to a reference signal and stored in an associated memory. The said associated memory is integrated at the level of each of the said pixels.
摘要:
Methods of screening for a tumor or tumor progression to the metastatic state are disclosed. The screening methods are based on the characterization of DNA by principal components analysis of spectral data yielded by Fourier transform-infrared spectroscopy of DNA samples. The methods are applicable to a wide variety of DNA samples and cancer types. A model developed using multivariate normal distribution equations and discriminant analysis is particularly well suited for distinguishing primary cancerous tissue from metastatic cancerous tissue.
摘要:
An apparatus and method is provided for detecting a temperature range or a temperature of a railroad train wheel or bearing wherein infrared radiation radiating from the wheel or bearing of a train traversing a railroad track is indicative of a temperature range of the wheel or bearing. The apparatus comprises a sensor for sensing infrared radiation radiating from the wheel or bearing within two or more infrared wavelength ranges. The sensor generates signals indicative of the sensed infrared radiation in each of the wavelength ranges. A processor determines a temperature range or a temperature of the wheel or bearing from the generated signals. The method detects a temperature range of a railroad train wheel or bearing wherein infrared radiation radiating from the wheel or bearing of a train traversing a railroad track is indicative of the temperature range of the wheel or bearing. The method includes sensing infrared radiation radiating from the wheel or bearing within two or more wavelength ranges of the infrared radiation. Signals are generated that are indicative of the sensed infrared radiation in each infrared wavelength range. A temperature range or a temperature of the wheel or bearing is determined from the generated signals.
摘要:
The present invention provides for an improved electromagnetic radiation detector having a micromachined electrostatic chopper/shutter device. The MEMS flexible film chopper/shutter device provides reliability, efficiency, noise reduction and temperature fluctuation compensation capabilities to the associated electromagnetic radiation detector. An electromagnetic radiation detector having an electrostatic chopper/shutter device includes a detector material element and flexible film actuator overlying the detector material layer and moveable relative thereto. The flexible film actuator will typically include an electrode element and a biasing element such that the actuator remains in a fully curled, open state absent electrostatic voltage and moves to a fully uncurled, closed state upon the application of electrostatic voltage. Arrays that incorporate a plurality of electromagnetic radiation detectors and/or electrostatic shuttering devices are additionally provided for.
摘要:
The invention relates to a device for fibre optic temperature measurement with an optical fibre having a radiation coupling in area and a detector-associated radiation coupling out area. Such a device is characterized in that the optical fibre is constructed with high transmission in the infrared (IR) spectral range, particularly in the range from approximately 2 nullm to approximately 20 nullm.
摘要:
A night vision system for a vehicle is provided. The system includes an illumination subsystem for illuminating a region proximate the vehicle, a receiver for receiving light reflected off objects in the illuminated region and generating a signal responsive to the received light. A GPS unit is included in operative communication with a GPS network for generating a time signal and vehicle directional data. A controller is programmed to periodically pulse on the illuminating device and the receiver substantially simultaneously as a function of the time signal and the vehicle directional data. In particular, vehicles traveling in opposite directions will have their night vision system activated out-of-phase with each other so that neither night vision system is nullblindednull by illumination emitting from the other.