6results about How to "Realize simultaneous measurement" patented technology

The utility model discloses a double-parameter optical fiber sensor based on a conical few-mode fiber grating, which belongs to the technical field of optical fiber sensors and comprises a broadband light source (1), a sensing structure (2) and a spectrum analyzer (3). The sensing structure (2) comprises a first single-mode fiber (201), a coreless fiber (202), a conical few-mode fiber grating (203) and a second single-mode fiber (204); more cladding modes are generated through mode field mismatch of the single-mode optical fiber and the coreless optical fiber and bending of a conical area, the double-parameter sensitivity of the sensor is improved, and two transmission characteristic peaks appear on the fiber bragg grating inscribed on the few-mode optical fiber by using different mode numbers in the few-mode optical fiber. The reliability and repeatability of the sensor are greatly improved, the corresponding double-parameter sensitivity can be respectively calculated by observing the position change of an interference spectrum and a transmission characteristic peak, and a sensitivity matrix is further established, so that the simultaneous measurement of double parameters is realized. The sensor has the characteristics of high sensitivity, strong reliability, strong anti-interference capability, small size, simplicity in manufacturing and the like.

The utility model discloses a sonar temperature sensor and an electric kettle realizing water level measurement based on sonar technology, the sonar temperature sensor is integrated with a sonar sensor and a temperature sensor, the sonar temperature sensor comprises a T-shaped sensor housing, a sonar transduction sheet and a temperature measurement circuit board, and the sonar transduction sheet and the temperature measurement circuit board are both arranged in the sensor housing; wherein the sonar transduction sheet is glued at the upper part in the sensor shell by using epoxy resin glue, and the temperature measurement circuit board is arranged on the inner wall of the sensor shell, so that the temperature measurement circuit board is respectively connected with the sensor shell and then is encapsulated by epoxy resin; the sensor shell is made of 304 stainless steel, and the sensor shell is directly used for signal receiving and transmitting of the sonar sensor and the temperature sensor so that the water level height and the water temperature can be conveniently detected. According to the utility model, the sonar temperature sensor is integrated, the installation is convenient, and the water level measurement accuracy can be improved through the sonar sensor.

The invention relates to the technical field of mass spectrum analyzers, in particular to a mass spectrum ionization device and method for cooperatively monitoring dirt and carbon. The device comprises a high-pressure photochemical ionization cavity and a low-pressure photoelectron ionization cavity, an ion transmission module and an ion convergence reaction electrode group are arranged in the high-pressure photochemical ionization cavity; organic product ions are generated in the high-pressure photochemical ionization cavity and penetrate through a differential electrode to be transmitted into the low-pressure photoelectron ionization cavity; an electron transmission module, an ion convergence multi-pole rod group and an ion extraction electrode are arranged in the low-pressure photoelectron ionization cavity, the low-pressure photoelectron ionization cavity generates inorganic product ions, and the inorganic product ions and organic product ions penetrate through the ion extraction electrode and are transmitted to the mass analyzer for detection. Cascade connection of the two ion sources under different working air pressures is realized through vacuum difference, so that ionization detection of the two ionization sources can be obtained through single sample introduction, the analysis coverage of a mass spectrometer is greatly improved, and the application field is widened.

The application relates to a nuclear power plant neutron energy spectrum and direction measuring device, system and method, which comprises a packaging shell, the packaging shell comprises an upper shell and a lower shell, a detection module is arranged between the upper shell and the lower shell, the detection module comprises a support and a plurality of plastic scintillators, the support is used for fixing and spacing the plurality of plastic scintillators to shield neutrons, a first signal acquisition module is arranged between the upper shell and the detection module and is used for acquiring a first group of scintillation light signals generated by the plurality of plastic scintillators close to one end of the upper shell, and a second signal acquisition module is arranged between the detection module and the lower shell and is used for acquiring a second group of scintillation light signals generated by the plurality of plastic scintillators close to one end of the lower shell. The application can realize simultaneous measurement of neutron energy spectrum and direction, has the advantages of lightness, radiation resistance and real-time monitoring, and is suitable for nuclear power neutron energy spectrum and direction measurement.

The application discloses a dielectric constant microwave sensor with a microstrip coupling line structure and particularly relates to the technical field of microwave sensing, and comprises a metal transmission line on an upper layer, a dielectric substrate on a middle layer and a grounded metal plate on a bottom layer; a signal path of the upper layer structure of the microwave sensor is arranged between the first port and the second port, and the signal path is composed of at least one transmission line, four coupling lines and two metalized through holes. The microstrip coupling line structure adopted in the application is sensitive to changes in the dielectric constant of external materials, has the advantages of small size, easy processing, low cost, high precision and the like, different sizes of the microstrip coupling line provide two measurement working frequency bands, and the microwave sensor can be effectively applied to solid dielectric constant measurement work.

The application discloses a pre-assembly-free large steel truss section assembly multi-point real-time digital monitoring method and system, belongs to the technical field of bridge construction monitoring, solves the problem that the existing method cannot realize multi-point simultaneous measurement and cannot realize real-time feedback when the optical prism method is used for steel pipe section assembly positioning, and the method comprises the following steps: segment main pipe blanking scanning, segment main pipe line laying monitoring, segment main pipe assembly deviation rectification, and flange plate line laying fixing; the application provides a pre-assembly-free large steel truss section assembly multi-point real-time digital monitoring method, multiple visual measurements are adopted to avoid the visual line blockage of one-way measurement, and time waste caused by repeated conversion of measurement stations is avoided; the end centroid of the steel pipe can be accurately controlled, and uncertain errors caused by the measurement of a single waist line of the circular pipe are avoided; and a prior measurement recording method is adopted, only three mark points of the main pipe body are measured in the formal assembly stage, and the efficiency of line laying measurement is greatly improved.