30results about How to "Realize multi-parameter measurement" patented technology

The invention relates to a multi-parameter logging method while drilling based on a controllable neutron source, which includes the steps of utilizing a multi-detector measuring system consisting of the D-T controllable neutron source, two thermal neutrons and two gamma detectors, sufficiently utilizing fast neutrons transmitted by the controllable neutron source to militate with atomic nucleuses of formation elements by means of special pulse and measuring timing sequence design, recording gamma energy spectrums, gamma time spectrums and thermal neutron time spectrums at different positions, and performing simultaneous measurement of multiple parameters such as formation density, formation porosity, formation fluid saturation, formation element content and the like with a nuclear logging instrument in a drilling process by means of different spectral resolution and data processing, so that valuation on formation lithology, formation porosity and formation fluid saturation while drilling are realized, the same parameter of the formation porosity and the formation fluid saturation can be measured by various methods, logging interpretation ambiguity is decreased, and accuracy and reliability of logging data interpretation are enhanced.

The invention discloses a stroma moisture and conductivity in situ detector and a method for determining salinity. The detector comprises an integrated electrode sensor probe (1), a sensor signal conditioning circuit (2) and a signal processing control unit (3), wherein the integrated electrode sensor probe (1) is formed by a probe (11), a probe (12), a probe (13) and a probe (14) with space of 20mm; the integrated electrode sensor probe (1) and the sensor signal conditioning circuit (2) are encapsulated in a shell (4) in an insulating manner; the signal processing control unit (3) is encapsulated in a shell (5); and the shell (4) and the shell (5) are connected by a group of cables (6). The detector and the method have the following beneficial effects: the structure is simple; manufacturing is convenient; multiple parameters can be simultaneously measured; and the measuring results are more accurate and the adaptability is stronger.

The invention discloses a temperature sensor based on a grapheme-film-modified biconical micro-nano optical fiber coupler. The device comprises a super-continuous broadband light source, a graphene-modified micro-nano optical fiber coupler sensing unit and a spectrum analyzer. The graphene-modified micro-nano optical fiber coupler sensing unit is respectively connected with the super-continuous broadband light source and the spectrum analyzer through connecting optical fibers. On the basis of the electric heating high-temperature fused biconical taper method, a biconical 2*2 micro-nano opticalfiber coupler is prepared; the central lumbar vertebra uniform area of the coupler is plated with a graphene film by using a film wet transfer method; and the sensitivity of the effective refractiveindex of the coupler intermode interference to the external environment temperature is improved by utilizing the high thermo-optic coefficient and the high thermal conductivity of the graphene film, so that the high temperature measurement sensitivity is realized. Meanwhile, the involved sensor shows the excellent linearity, repeatability and stability in experiments. The temperature sensor has advantages of being compact in structure, easy to manufacture, low in cost and easy to integrate with other optical fiber systems.

The invention relates to a water quality monitoring probe based on an ultraviolet visible absorption spectrum and a fluorescence spectrum. The water quality monitoring probe comprises a flash lamp, a first convex lens, a first water quality monitoring window, a second water quality monitoring window, a multi-wavelength laser source for exciting fluorescent light, a third water quality monitoring window, a chopper, a convex lens, an ultraviolet visible fiber spectrum measurer, a controller signal processor, a flash lamp controller, a multi-wavelength laser source controller for exciting fluorescent light and a stepping motor. A water sample can be scanned by a continuous ultraviolet visible spectral region, continuous absorbancy information in water quality is acquired, various parameters in the water quality are acquired by a diversified analyzing means, water characteristic information in the various data is calculated, a correcting model between spectrum data and the water quality parameters is established according to the data, and the model is used as a tool to realize water quality parameter analysis.

The invention discloses a testing method for a semiconductor gas sensitive element, and belongs to the field of element testing. The method is used for solving the problem that an existing semiconductor gas sensitive element testing method is not perfect. The testing method is technically characterized by comprising the step of assembling and testing a semiconductor gas sensor testing system and the step of analyzing the semiconductor gas sensor testing system and the performance of the semiconductor gas sensitive element. The testing method has the advantage that powerful guarantees are provided for the testing environment and the testing precision of the semiconductor gas sensitive element.

The invention relates to an electromagnetic ultrasonic detection method for plane residual stress, belongs to the technical field of ultrasonic detection, and relates to an electromagnetic ultrasonicdetection system and detection method for plane residual stress. The method comprises the steps of: firstly, assembling the electromagnetic ultrasonic detection system, and measuring stress detectionultrasonic signal waveforms in three directions by using ultrasonic coils in an electromagnetic ultrasonic surface wave probe so as to calibrate an acoustic elastic coefficient of a material. The surface wave signals in three directions of a point to be measured are collected, and the magnitude and direction of plane stress are calculated by using an ultrasonic detection theoretical formula. In the method, one-time positioning of the two principal stresses in the plane stress state and the included angle between the two principal stresses, and simultaneous measurement of multiple parameters are realized by using the surface wave probe with the function of three-transmitting and three-receiving. The distance between receiving and transmitting probes is reduced and the spatial resolution ofthe probe are improved by reducing the turns per coil, the line width and the line distance of ultrasonic transmitting and receiving coils. A circuit board and an impedance matching network are connected by using a radio frequency connector, thereby facilitating the installation and repeated use for multiple times, the detection method is simple, and the efficiency is high.

The invention discloses a detection device for a mechanical cam controller; a driving mechanism is used for driving the mechanical cam controller and an encoder to rotate by a coupler; the encoder is used for sending the acquired crankshaft angular velocity information into a control system; a movement monitoring signal generator is used for acquiring crankshaft status signals and sending the signals into the control system; a photoelectric position sensor is used for acquiring the switch position of a cam group and sending the switch position into the control system by a photoelectric signal receiver; and a switch contact is used for sending a switch power-on opening and closing signal into the control system. The control system can be used for processing the signals by an internal computing system, so that the test aim can be achieved. The detection device is suitable for testing the performances and the service life of the mechanical cam controller, can realize multi-parameter measurement, especially the measurement for repeatability precision, and has the characteristics of being accurate in test results, visual, quantitative, small in size and high in efficiency.

The invention relates to a Y waveguide parameter measuring instrument, a Y waveguide parameter measuring system and a Y waveguide parameter measuring method. The Y waveguide parameter measuring instrument comprises a light source, a variable optical attenuator, a circulator, an optical detector, an optical path conversion device and an upper computer. The output end of the light source is connected with the input end of the variable optical attenuator, and the output end of the variable optical attenuator is connected with the first port of the circulator; a second port of the circulator is connected with one end of the trunk of the Y waveguide to be measured; the other end of the trunk is connected with one end of the first fork of the Y waveguide to be measured and one end of the secondfork of the Y waveguide to be measured; the other end of the first fork is connected with a first port of the light path conversion device; the other end of the second fork is connected with a secondport of the light path conversion device; a third port of the circulator is connected with the input end of the optical detector; the output end of the optical detector is connected with the upper computer. According to the invention, multi-parameter measurement is realized based on a measurement method of a traditional Sagnac interferometer, the measurement steps are simple, the cost is greatly reduced, and one-key full-automatic measurement is realized.

The invention belongs to the technical field of aero-engine inlet flow field measuring devices, and particularly relates to an anti-large overload combined distortion measuring rake on an intake passage. The anti-large overload combined distortion measuring rake on an intake passage is composed of a steel framework and a rubber material (1). The steel framework is a hollow structure, and composedof a rake arm (2), a mounting base (3) and measuring point outer sleeves (4). The cross section of the rake arm (2) is a U-shaped structure. The measuring point outer sleeves (4) for internally mounting sensors are distributed along the radial direction of the rake arm (2). The base (3) is an arc shape, and is provided with bolt holes connected with the mounting wall surface. A hole communicated with the hollow part of the rake arm is formed on the middle of the base. According to the anti-large overload combined distortion measuring rake on an intake passage, the steel framework of the measuring rake is formed integrally by using numerical control; a temperature and pressure sensor can be mounted in the outer sleeve to realize the multi-parameter measurement; and a threaded mount mode isadopted for the sensor to conveniently disassemble and assemble the temperature and pressure sensor, so that the utilization efficiency of the sensor is improved.

The invention discloses a multi-parameter landslide monitoring device and method based on a weak grating, and the device comprises a multi-parameter fiber optic sensor, a weak grating demodulator anda power supply device, wherein the multi-parameter fiber optic sensor is a whole sensing optical cable, which includes a weak grating water level sensor, a weak grating inclination sensor, a weak grating rope sensor and a weak grating water pressure sensor, that are located at the tail end and connected in series, and a stress strain sensing cable located at the front end; the weak grating demodulator is used to demodulate wavelength change information in the multi-parameter fiber optic sensor and transmit information externally by wired or wireless means; and the power supply device is used to supply power to the weak grating demodulator. The multi-parameter landslide monitoring device based on the weak grating provided by the invention packages the weak optical fiber gratings into various sensors through different packaging technologies according to requirements by customizing and engraving a plurality of weak grating arrays on a single optical fiber to realize the simultaneous monitoring of multiple parameters on one sensing optical cable, which is of great significance in landslide monitoring.

The invention provides a measuring device for multi-parameters of a solid-liquid two-phase flow, and relates to the technical field of measurement of basic parameters of the two-phase flow. The measuring device comprises a box body and a box cover. A circular opening is formed in the top of the box body, and is matched with the box cover. A measuring mechanism for the heat conduction coefficient and a density measuring mechanism are arranged on the box cover respectively. The density measuring mechanism comprises an ultrasonic transducer fixing seat arranged at the bottom of the box cover andan ultrasonic transducer arranged inside the ultrasonic transducer fixing seat for measuring, wherein an organic glass plate is arranged right under the ultrasonic transducer. The measuring mechanismfor the heat conduction coefficient comprises a glass tube arranged at the bottom of the box cover. A metal platinum wire is mounted on the core of the glass tube, and a wire is arranged on the surface of the glass tube. The wire and the metal platinum wire form a loop for measuring the thermal conductivity coefficient. According to the measuring device for multi-parameters of the solid-liquid two-phase flow, the measuring device has the beneficial effects that multi-parameter measurement, such as density, thermal conductivity, and the like, can be realized; that the structure is simple; and that the measurement result is more accurate.

The invention relates to a wireless sensor network device of a waterborne traffic safety control system and a remote monitoring system; the device consists of a remote monitoring center, a wireless public network, a data concentrator, a sensor terminal and a ZigBee area wireless network; the data concentrator and the sensor terminal carry out the data communication by the ZigBee area wireless network; the data concentrator sends the parameters which are measured by the sensor terminal and gained by the ZigBee area wireless network to the remote monitoring center and receives the data which is transmitted by the remote monitoring center by the wireless public network; the data concentrator consists of an embedded micro-processor, a wireless public network module, a ZigBee module, a power module and an EEPROM; the sensor terminal consists of a PIC singlechip, a ZigBee module, an EEPROM module, a dial switch and a power module; the device and the system have the advantages of multi-parameter measurement and simple installation process, need no complex wiring in-situ and can meet the multi-parameter measurement requirement under complicated waterborne environment.

The invention provides a pH adjusting device comprising a medicament storage box, a control chip, a pH sensor, a solenoid valve, a liquid metering unit, and an input unit; the control chip obtains pHfrom the pH sensor, obtains a medicament volume change value from the liquid metering unit, and adjusts the solenoid valve open and close levels according to the pH and the volume change value, thus allowing the adjusted liquid pH to reach the target pH. The pH adjusting device is simple in structure, easy to use, can effectively adjust pH values of different adjusted liquids, thus enabling the liquid to reach the pH value needed by experiment personnel. In addition, the device has excellent expandability, and can measure multiple parameters of the adjusted liquid.

The invention relates to a portable CO2 monitoring device and method for seismic precursor flow observation. The monitoring device comprises an air inlet, a first electromagnetic valve, a dehumidifying device, a flow controller, a CO2 sensing detecting unit, a second electromagnetic valve, a purifying device, an air outlet and a main control circuit. The air inlet, the first electromagnetic valve,the dehumidifying device, the flow controller, the CO2 sensing detecting unit, the second electromagnetic valve and the air outlet are orderly connected. The purifying device is connected between thefirst electromagnetic valve and the second electromagnetic valve. The first and second electromagnetic valves and the CO2 sensing detecting unit are respectively connected to the main control circuit. The device comprises a measuring gas path and a self-calibrating circulating gas path. The CO2 sensing detecting unit has an integrated design based on an infrared absorption principle, has a high detection limit and a fast response speed, can correct the CO2 concentration based on an environmental factor through multi-parameter measurement and can improve the accuracy of CO2 concentration detection. The device is small in size, is easy to carry and can be used in the harsh environment at the earthquake precursor observation point.