Emerald Group Publishing Limited
Copyright © 2011, Emerald Group Publishing Limited
Article Type: Web sites, patent abstracts and book review From: Sensor Review, Volume 31, Issue 3
Title: Electromagnetic radiation detector
Publication number: WO2010151607 (A1)
Publication date: 29 December 2010
Applicant(s): Arndt Donald, J. (USA)±
A device implemented with the present invention senses and converts unseeable electromagnetic (EM) energy such as high-frequency radio, infrared, ultraviolet, etc. to an image in the human visual spectrum (red to violet, i.e. the rainbow). The size of the image and quality of the image is improved by rotating or oscillating the sensors in order to scan a broader array of electrometric energy. The electromagnetic radiation (EMR) detector comprises: a sensor circuit that generates EMR signals of the scanned EM energy of the desired band of EM spectrum. The EMR detector further comprises processors that convert the EMR signals into image data that are used to generate the visible image of the scanned EM energy; and a motor that allows the sensor circuit to scan the EM energy. The sensor circuit may be a plug-in PCB module to allow ready selection of the desired frequency band.
Title: Electromagnetic wave sensing apparatus
Publication number: US2010163713 (A1)
Publication date: 1 July 2010
Applicant(s): Lite on Semiconductor Corp. (TW)
An electromagnetic wave sensing device and an operating method for the same are disclosed. The claimed device integrates signal transformation, operation and a sensing range configuration. Particularly, the sensing apparatus at least has two sensing units that, respectively, sense the ambient light and the electromagnetic wave with a specific range of spectrum. Moreover, a temperature sensor is further introduced to compensate the sensed signals by eliminating the temperature influence. Since the output of the sensing device can have a stable characteristic, the downstream manufacturers do not need to use different hardware or software to adapt different product conditions. The preferred embodiment is to provide one electromagnetic wave sensing device having at least two sensing units for, respectively, sensing different ranges of electromagnetic waves. After signal transformation, the signals are outputted according to the working mode configured by a control unit.
Title: System and method for detecting extremely low-frequency electric fields in the human body
Publication number: US2010256508 (A1)
Publication date: 7 October 2010
Inventor(s): Dinwiddie John (USA)
A sensor, such as an antenna, detects an electrical sinoatrial signal produced by the human heart. A spectrum analyzer then processes the electrical sinoatrial signal to generate a frequency spectrum comprising a plurality of frequency components associated with different organs. A diagnostic unit then analyzes the frequency spectrum and compares the frequency spectrum to a standardized normal spectrum to determine the condition of the organs. In particular, the amplitude and the bandwidth of the frequency components may be compared to the standardized normal spectrum. The system monitors the relationship between the electromagnetic energy of the heart, organs, limbs, and the brain.
Title: Underwater remote sensing
Publication number: US2010109933 (A1)
Publication date: 6 May 2010
Inventor(s): Rhodes Mark (GB), Wolfe Derek (GB), Hyland Brendan (GB)
An underwater remote sensing system comprising a transmitter for transmitting an electromagnetic signal, a receiver for receiving an electromagnetic signal reflected from an object and determining means for determining the location of the object, wherein at least one of the transmitter and receiver is underwater. The determining means may be operable to determine the location of the object using signals received at three or more receiver positions. To do this, three or more receiver antennas may be provided. Alternatively, a single receiver antenna may be provided and moved between three or more different measurement locations.
Title: Detection device and method for suspect metal object in shoe based on electromagnetic sensor
Publication number: CN101840002 (A)
Publication date: 22 September 2010
Inventor(s): Ben Wang, Wuliang Yi
The invention relates to a detection device for a suspect metal object in a shoe based on an electromagnetic sensor, belonging to the technical field of electromagnetic sensors. The device comprises at least one electromagnetic sensor, a signal generation unit, a power amplifier, a signal acquisition unit, and an upper computer. The electromagnetic sensor comprises an external coil and internal coils, wherein the external coil is used as an excitation coil, the internal coil is used as receiving coils, and the external coil and the internal coils are arranged on the same plane. The external coil is formed by a conducting wire which is wound on a large rectangular frame. The two ends of the conducting wire are used as excitation input ends. The internal coils are two coils and comprise two parallel rectangular frames with the same area which are arranged in the external coil and are of a differential structure. The upper computer judges whether the suspect metal object exists in the shoe stepping on a floor embedded with the electromagnetic sensor or not according to the acquired inductance signals. The invention additionally provides a detection method for the suspect metal object in the shoe, wherein the detection method is realized by adopting the detection device. The invention has the advantages that the practicability is high, the use is convenient, and the detection device is one of the most feasible detection tools for the suspect metal object in the shoe.
Title: Environmental sensor system
Publication number: EP2256472 (A2)
Publication date: 1 December 2010
Applicant(s): Boeing Co. (USA)
In one embodiment, a system to detect one or more environmental conditions in proximity to a surface comprises a first metamaterial environmental sensor module proximate the surface. The environmental sensor comprises a metamaterial-based electrically resonant structure having a resonance frequency which varies in response to changes in at least one of a humidity proximate the sensor module, a temperature proximate the sensor module, or the presence of a chemical or biological agent proximate the sensor module. The system further comprises a remote receiver to receive an electromagnetic signal comprising the signal generated by the electrically resonant structure and a signal analysis module to determine an environmental condition such as humidity, temperature, pre-ice conditions, ice, chemicals or biological species from the at least one environmental condition signal.
Title: Method and system for plasma-induced terahertz spectroscopy
Publication number: US2010277718 (A1)
Publication date: 4 November 2010
Applicant(s): Rensselaer Polytech Inst. (USA)
A method of analyzing a remotely located object includes the step of illuminating at least a portion of a targeted object with electromagnetic radiation to induce a phase transformation in the targeted object, wherein the phase transformation produces an emitter plasma, which emits terahertz radiation. The method also includes the step of ionizing a volume of an ambient gas to produce a sensor plasma by focusing an optical probe beam in the volume and the step of detecting an optical component of resultant radiation produced from an interaction of the focused optical probe beam and the terahertz radiation in the sensor plasma. Detecting an optical component of the resultant radiation emitted by the sensor plasma facilitates detection of a characteristic fingerprint of the targeted object imposed onto the terahertz radiation produced as a result of the induced phase transformation.