79 results about "Monitors radiation" patented technology

Described is radiation sensitive imaging and dosimeter composition (20) containing a radiation sensitive material (21), e.g., a diacetylene (R—C═C—C═C—R′, where R and R′ are substituent groups) or a radiochromic dye, a polymeric binder (22) and optionally a solvent (23) and/or an activator (24). Radiation sensitive materials are incorporated into a moldable or castable material and are molded or casted into shaped-articles (100), such as coatings, films, fiber, plaques, rods and blocks. Upon exposure to high-energy radiations, radiation sentitive material develops color thereby producing a visible image. Because of the higher thickness, a significantly lower dose of radiation can be monitored and an image is produced in three dimensions. Materials, processes and usages for thick radiation sensitive devices are described. A thick block can be used for monitoring radiation dosages in the three dimensions.

A detector system adapted for monitoring a radiation treatment system comprising a pulsed beam radiation source for treating a body with a given beam intensity and beam configuration, with pulse times and intervals between pulses less than 100 milliseconds, using at least one monitoring radiation source located inside or outside the body, the detector system comprising; a) a detector designed to detect radiation from the monitoring source, and subject to interference radiation from the beam source; and b) control circuitry that creates a data record of radiation received by the detector, to provide information about the body; wherein, when the detector detects radiation in real time during operation of the beam, the data record selectively excludes data for radiation received by the detector during the pulses, as opposed to data for radiation received by the detector between pulses.

An apparatus and method for use with a coherent optical source to detect environmental changes. The apparatus comprises: an optical cavity, including an input coupling port, and an optical fiber section; a detector optically coupled to the optical cavity to monitor radiation in the optical cavity; and a processor electrically coupled to the detector for analyzing the environmental changes adjacent the detection portion of the optical cavity based on a rate of decay of the radiation in the optical cavity monitored by the detector. The optical fiber section of the optical cavity includes a detection portion coated with a conductive layer capable of supporting a surface plasmon to provide cavity loss. The surface plasmon is responsive to the environmental changes adjacent the detection portion. The coherent optical source is optically coupled to the input coupling port of the optical cavity to provide the radiation in the optical cavity.

Temperature sensing apparatus comprises a source of electromagnetic radiation (1), a wavelength-selective element (3) which interacts with radiation emitted from the source (1) and a detection system (6) which monitors radiation from the wavelength-selective element (3). The wavelength-selective element (3) is fixedly mounted on a substantially rigid substrate (not shown). The apparatus can be used for temperature sensing in aquatic environments.

A network enabled radiation detection system includes a sensor configured for measuring radiation; a microprocessor configured for receiving data from the sensor related to radiation; memory operatively associated with the microprocessor; software code configured for time stamping data related to radiation, and for storing data, subsequent to time stamping, in the memory; and wireless communication equipment configured for transmitting a message with the data related to radiation to another device. A method of monitoring radiation with a network enabled radiation detection system includes measuring radiation with a sensor; receiving data into a microprocessor related to the radiation; time stamping the data related to radiation; storing the data in memory; and transmitting the data to a base station.

A portable, hand held, multi-sensor radiation detector is disclosed. The detection apparatus has a plurality of spaced sensor locations which are contained within a flexible housing. The detection apparatus, when suspended from an elevation, will readily assume a substantially straight, vertical orientation and may be used to monitor radiation levels from shipping containers. The flexible detection array can also assume a variety of other orientations to facilitate any unique container shapes or to conform to various physical requirements with respect to deployment of the detection array. The output of each sensor within the array is processed by at least one CPU which provides information in a usable form to a user interface. The user interface is used to provide the power requirements and operating instructions to the operational components within the detection array.

The invention discloses an eyeglasses or other products having monitoring function. The radiation such as ultraviolet radiation (ultraviolet), infrared radiation or light rays can be measured by a detector or a circuit. The radiation to be measured is used for providing relative information to users of eyeglasses or other products. The invention has the advantages that users of eyeglasses or other products can monitor radiation exposure to be contacted easily.

A UVC disinfection system which produces a dosage of UVC radiation sufficient to kill Clostridium difficile and other pathogens in a simple fast and unique manner. The system is especially useful for sterilizing and disinfecting medical ultrasound probes or transducers. The system in one embodiment comprises an enclosure for housing a plurality of UVC lamps which are disposed around a central area in which an ultrasound transducer can be disposed. The lamps are disposed in a vertical orientation, as is the transducer and provide 360° of UVC radiation around the transducer for effective and efficient decontamination. The UVC lamps can also be provided at the bottom of the enclosure. The system is controlled by an electronic controller which typically is a microprocessor based controller for control of the ballasts for the UVC lamps and having associated control switches and displays. The current input to the ballasts is monitored by the controller to assure that the UVC lamps are operating properly. A UVC radiation sensor provided in the housing monitors radiation intensity from the lamps. If the current and/or radiation intensity is below reference levels, the system is shut down by the controller.

The invention discloses a radiation source real-time monitoring and managing system and method based on the Internet of things. The radiation source real-time monitoring and managing system based on the Internet of things comprises a radiation source processing information system, connecting a server side and a server of a client side, of a network managing platform. The radiation source real-time monitoring and managing system and method based on the Internet of things is characterized in that the method comprises monitoring management, project initialization management and task management, wherein the task management comprises the steps of transmitting monitored radiation data and information to a data center for processing in real time, and enabling the information to cover all technology using sides. Compared with the prior art, the radiation source real-time monitoring and managing system and the method based on the Internet of things achieve the transformation of radiation exceeding-standard control to real-time process control, enlarges a monitoring control area, can enable small and medium size enterprises with radiation sources to be covered in low cost, achieve the advantages of preventing radiation from exceeding standards in advance, and fully uses the Internet of things for carrying out real-time monitoring and management on the radiation sources effectively.

A radiation sensor array is carried on a flexible sheet of film, for placement on the skin of a patient adjacent to a brachytherapy location beneath the skin. With the array approximately centered on a position where radiation source to skin distance is estimated to be minimum, the array of sensors is used to monitor radiation dose received at the skin. With a controller connected to the array and preferably also to the radiation source in the applicator, the radiation dose received at all skin points of interest can be monitored, a point of maximum dose and a projected approach to limit dose can be calculated, and in response the system can warn the operator or control a brachytherapy procedure so as to discontinue radiation or control the radiation level or source position in real time. The system can also include percutaneous sensors.

A radiation imaging apparatus includes pixels arranged to form an array, sensors including conversion elements dispersed in the array to monitor radiation, a processing circuit for processing signals from the sensors, first signal lines for transmitting a signal from at least one of the sensors to the processing circuit, and second signal lines extending in a direction parallel to the first signal lines and not directly connected to the pixels and the conversion elements or connected to at least one of the pixels and at least one of the sensors. The processing circuit determines a value of a signal generated by each sensor based on a difference between a value of a signal appearing on the first signal line and a value of a signal appearing on the second signal line.

A millimeter wave measurement system has been developed for remote detection of airborne nuclear radiation, based on electromagnetic scattering from radiation-induced ionization in air. Specifically, methods of monitoring radiation-induced ionization of air have been investigated, and the ionized air has been identified as a source of millimeter wave radar reflection, which can be utilized to determine the size and strength of a radiation source.

An inventive system and method for monitoring radiation dose data comprises in one aspect, a database storing at least recommended dose data and benchmark dose data for one or more facilities, a scanner located in one facility, the scanner can perform a scan with radiation dose data, an application server, a user interface comprising at least a display, and a module, operable on the processor, to receive the radiation dose data from the scanner, store the radiation dose data, monitor the radiation dose data in accordance with effective dose data and the benchmark dose data for the facilities, and display the monitored dose data and the benchmark dose data for the facility. In one aspect, convert the radiation dose data in accordance with the recommended dose data stored in the database and obtain an effective dose data based on the converted radiation dose data.

Garments and methods for monitoring radiation exposure and cumulative radiation exposure in individuals undergoing repeated exposure to ionizing radiation are disclosed.

The invention discloses a monitoring method for radiation embrittlement of a reactor pressure vessel of a nuclear power plant. The monitoring method comprises the following steps: 1) acquiring an electromagnetic property parameter value X0 and a mechanical property parameter value Y0 of reactor pressure vessel steel at an initial state; 2) performing on-time testing on an electromagnetic propertyparameter X of a monitoring part of the reactor pressure vessel steel at one specific time point after radiation embrittlement; and 3) according to a function relation expression delta (Y)=A+B*exp[C*delta(X)], confirming a mechanical property parameter Y, wherein the electromagnetic property change rate delta (X)=IX-X0I/X0; the mechanical property change rate delta (Y)=IY-Y0I/Y0; and A, B and C are calculation coefficients. Compared with the prior art, the monitoring method for radiation embrittlement of the reactor pressure vessel of the nuclear power plant, which is disclosed by the invention, is not only capable of achieving real-time multi-time nondestructive measurement, but also precise in data, good in testing operation security, and capable of monitoring radiation embrittlement degrees of multiple positions of the reactor pressure vessel simultaneously.

An automatic switch (3) for an electric domestic appliance (1, 13, 33, 36) is provided. The switch comprises a base (4) and associated electronic circuitry (8) for inclusion in an electric power supply circuit that includes a heating element whereby liquid in a container may be heated to boiling temperature. The switch includes a sensor (7, 18) for monitoring radiation emanating from the surface (6) of liquid to be boiled in a container and preferably also a radiation source (5, 19) to produce radiation that is reflected off the liquid surface. The sensor is configured to provide a first output associated with radiation sensed whilst a generally quiescent state of the surface prevails, and to provide a second output associated with radiation sensed when a generally turbulent state of the surface of the liquid prevails that is associated with the onslaught of boiling of the liquid. The change of state from the first output to the second output is operative to trigger a switching action in the electronic circuitry to open the electric power supply circuit. The electronic circuitry may include a first time delay arranged to open said electric power supply circuit a predetermined time period after said change of state from the first output to the second output and may also include a second time delay adapted to open said electric power supply circuit after a predetermined period of time in excess of a predetermined maximum time period permitted by the timer for heating liquid in the container.

An optical sensor is configured to determine an amount of at least one material in a sample without interference from any of the material of interest present in an ambient environment in which the optical sensing is effected. The optical sensor may include a compensation detector positioned a different distance apart from a source of monitoring radiation than the distance that a primary, measurement detector is positioned from the source. Alternatively, the optical sensor may include an optically transparent material that consumes space within the sensor and, thus, eliminates ambient amounts of a material of interest from at least a portion of an optical pathway through the sensor. A calibration element transmits calibration radiation to one or more detectors of an optical sensor to facilitate correction of any changes in the manner in which the one or more detectors sense radiation. Optical sensing methods are also disclosed, as are calibration methods.

The invention provides a radiation monitoring and nursing device for a pregnant woman, and relates to the field of medical instruments. The radiation monitoring and nursing device comprises a bracelet body and a radiation monitoring device, wherein the radiation monitoring device is arranged on the bracelet body. The radiation monitoring device comprises an upper cover, a lower cover, a micro-motor, a radiation detection chip and a thermal energy conversion sensing device, wherein the upper cover and the lower cover are buckled; the micro-motor, the radiation detection chip and the thermal energy conversion sensing device are arranged in the upper cover and the lower cover; the micro-motor and the thermal energy conversion sensing device are respectively connected with the radiation detection chip. The radiation monitoring and nursing device is used for monitoring radiation for the pregnant woman and is capable of preventing harm caused by the radiation to a baby in the pregnancy period and reducing birth defects, convenient and reliable to use and high in safety.

A nucleic acid accumulation analyzing chip comprising an optical waveguide having a radiation input port and a radiation output port, the optical waveguide being formed with at least one optical microcavity along its optical path, at least one oligonucleotide being immobilized to the optical waveguide in the microcavity, such that when the at least one oligonucleotide is contacted with reaction reagents under conditions allowing a nucleic acid accumulation reaction to take place, accumulated nucleic acid is detectable by providing radiation at the radiation input port of the optical waveguide and monitoring radiation signal modulation at the radiation output port of the optical waveguide.