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37results about How to "Avoid measurement failures" patented technology

Device, system and method for steel rail parameter automatic measurement

The invention discloses a device, a system and a method for steel rail parameter automatic measurement, which belongs to the technical field of optical measurement. The steel rail parameter automatic measurement device comprises a steel rail longitudinal-displacement automatic measurement unit, a data transmission unit and a power supply module or further comprises a central processing unit and a steel rail temperature automatic measurement unit; the steel rail longitudinal-displacement automatic measurement unit comprises a marker, a marker receiving processor and a rail side spud pile or further comprises a light source compensator; the steel rail longitudinal-displacement automatic measurement can be realized through the steel rail longitudinal-displacement automatic measurement unit; the steel rail parameter automatic measurement system comprises two or more steel rail parameter automatic measurement devices and a common central processing unit; and the steel rail temperature stress automatic measurement can be realized through the steel rail parameter automatic measurement system. The invention can realize the all-weather measurement, has high measuring accuracy, can automatically search the section with the largest temperature stress for the steel rail and further avoids an accident.
Owner:BEIJING JIAOTONG UNIV

Transformer substation intelligent drainage system and method

The invention discloses an intelligent drainage system and method for a transformer substation. The system comprises a water pumping device, a water level monitoring device, a sludge detection device,a rainfall monitoring device and a controller which are installed in a cable trench. The water pumping device is used for pumping accumulated water in the cable trench and is electrically connected with the controller; the water level monitoring device is used for monitoring the water accumulation condition in the cable trench and is electrically connected with the controller; the controller is used for processing feedback information of the water level detection device and controlling starting and stopping of the water pumping device and is in communication connection with the remote terminal; the rainfall monitoring device is used for monitoring environment rainfall and is electrically connected with the controller; and the sludge detection device is used for monitoring the sludge deposition condition at the bottom of the cable trench and is electrically connected with the controller. According to the device, the sludge deposition condition in the cable trench is considered; the vibration device, the transmission device and the stirring device are arranged, so the measurement accuracy of the water level gauge and the water pumping efficiency of the water pumping device are guaranteed.
Owner:JIAXING HENGCHUANG ELECTRIC POWER DESIGN & RES INST CO LTD +1

Hollow inclusion crustal stress telemetry system and method

The invention discloses a hollow inclusion crustal stress telemetry system and a method and relates to the technical field of geology, energy, deep mineral products and underground geotechnical engineering reconnaissance survey. The hollow inclusion crustal stress telemetry system comprises a hollow inclusion strainometer and a telemetry master computer. A strain foil, an orientator, a gathering module, a transmitting module and a transmitting antenna are arranged inside the hollow inclusion strainometer which is used for measuring, gathering and transmitting strain and azimuthal angles. The telemetry master computer is composed of a receiving antenna, a receiving module, a signal processing module, a data processing module and a data outputting and displaying module. The telemetry master computer is used for receiving, processing and storing parameter information such as the strain and the azimuthal angles. Through wireless transmission long-distance telemetry, the hollow inclusion crustal stress telemetry system and the method have the advantages that the problems of the redundant wiring process of geostress survey, cable winding, drilling cooling and the like are solved, test efficiency and precision are improved, measuring cost is saved, capacity of resisting disturbance is strong, and instruments are easy and convenient to operate.
Owner:付志亮

Donor-acceptor distance distribution measuring method based on fluorescence correlation spectroscopy

The invention discloses a donor-acceptor distance distribution measuring method based on fluorescence correlation spectroscopy. Fluorescent labeled living cells of donors and acceptors are subjected to a selective donor excitation operation through a fluorescence correlation spectroscopy module of a laser scanning confocal microscope in different laser power. A correlation card acquires photon number fluctuation signals of a donor channel and an acceptor channel to form a self-correlation curve. Energy transfer rate and energy transfer efficiency can be calculated through triplet state analysis of the self-correlation curve of the acceptors. In addition, triplet state distribution of the energy transfer rate and the energy transfer efficiency can be inverted from the self-correlation curve of the triplet state of the acceptors through a maximum entropy algorithm so that donor-to-acceptor distance distribution can be calculated. A fluorescence correlation spectrum analysis method itself is an excellent technology of measuring concentration of a dilute solution, so that the measuring method can be used for measuring donor-acceptor non-paired fluorescence resonance energy transfer efficiency and donor-acceptor non-paired distance distribution after integration items of overlap items of the spectrum being corrected with respect to the donor-acceptor concentration proportion. The measuring method is convenient to use and high in measuring precision.
Owner:SOUTH CHINA NORMAL UNIVERSITY

Dynamic temperature measuring device in high-temperature breaking strength tensile test

The invention discloses a dynamic temperature measuring device in high-temperature breaking strength tensile test. The dynamic temperature measuring device comprises a cylindrical tensile test piece, a tensile test machine chuck, an infrared radiation array, a temperature measuring thermocouple wire, a thermocouple end temperature measuring point, high-temperature-resisting insulation casing pipes, tension springs, a two-groove crown block, a computer, a high-power phase-shifting voltage controller and a light high-temperature insulating board. The dynamic temperature measuring device can be used in the high-temperature breaking strength tensile test, when the diameter of the cylindrical test piece is continuously reduced and even a great reducing deformation process occurs, the dynamic variation of the temperature on the surface of the cylindrical tensile test piece still can be reliably recorded, the key characteristic parameters such as strength limit of aerospace materials in a variable thermal environment at high speed can be acquired, and important test evidence can be provided for determining the load bearing capacity of the aerospace materials in the fast dynamic thermal environment.
Owner:BEIHANG UNIV

Tire pressure information acquisition equipment and operation system thereof

The invention relates to the technical field of tire pressure detection, and discloses tire pressure information acquisition equipment and an operation system thereof, the tire pressure is monitored by adopting a mode of combining a direct method and an indirect method, so that the measurement failure of a tire pressure monitor caused by factors such as high temperature can be avoided, and the measurement failure caused by factors such as high temperature can also be prevented; and furthermore in an indirect measurement method, the condition that the tire pressure of a plurality of tires is abnormal at the same time and cannot be known by a wheel speed sensor is avoided, the monitoring precision is improved, the safety of vehicle driving is improved, a temperature sensor and the like are arranged, a piston is matched with an air inlet pipe for continuous air inlet, the air pressure in the tires is reduced in a self-adaptive mode, and the tire burst phenomenon caused by too high tire pressure is avoided; through arranging an exhaust electromagnetic valve and the like, the highly-compressed gas in the gas storage pipe barrel is gradually exhausted into the tire through the exhaust pipe, so that the tire pressure of the tire in the corresponding low-temperature environment is increased in a self-adaptive manner, the phenomena of driving comfort weakening and the like caused by insufficient tire pressure in the low-temperature environment are avoided, and the safety of a vehicle in the driving process is further improved.
Owner:深圳市其利天下技术开发有限公司

Mine rigid shaft guide spacing measurement system and method

The invention provides a mine rigid shaft guide spacing measurement system and method. The system comprises a first eddy current displacement sensor used for measuring a first actual distance between the first eddy current displacement sensor and one side of a shaft guide, a first laser displacement sensor used for measuring a second actual distance between the first laser displacement sensor and a first sliding block, a second eddy current displacement sensor used for measuring a third actual distance between the second eddy current displacement sensor and the other side of the shaft guide, a second laser displacement sensor used for measuring a fourth actual distance between the second laser displacement sensor and a second sliding block, and a controller which determines the distance between the shaft guides according to the first actual distance, the second actual distance, the third actual distance, the fourth actual distance, a fifth actual distance, a sixth actual distance and a seventh actual distance. Therefore, non-contact measurement of the first actual distance and the third actual distance can be realized with high precision based on the eddy current effect of the eddy current displacement sensor, and the measurement precision is ensured; and the measurement system can synchronously run along with a lifting container, and the shaft guide gap and the joint dislocation amount are accurately measured.
Owner:安标国家矿用产品安全标志中心有限公司

Method and system for real-time calculating phase shift signal, plasma diagnostic method and system

A method and system for real-time calculating the dynamic phase shift signal are disclosed. The method comprises the following steps: segmenting the medium frequency signals in the testing channel and the reference channel, respectively; reading out the medium frequency signals in the testing channel and the reference channel at the present time period and converting the signals into the digital signals by an A/D conversion, respectively; converting the digital signals in the testing channel and the reference channel obtained at the present time period into the frequency domain signals by Fourier transform, respectively; and synchronously obtaining the accurate frequency at the present time period; and obtaining the phase difference by conducting a conjugate calculation on the frequency domain signals in the reference channel and the testing channel at the present time period according to the accurate frequency at the present time period. A plasma diagnostic method and system are also disclosed. The method and system for real-time calculating the dynamic phase shift signal can achieve the unattended and reliable real-time phase calculation and output, and the plasma diagnostic method and system which use the method and system for real-time calculating the phase shift signal can further reliably achieve the unattended real-time measurement for the electronic density and the current density.
Owner:SOUTHWESTERN INST OF PHYSICS

Temperature monitoring device and method for motor of conveying unit and circulating type conveying system

The invention relates to a temperature monitoring device for a motor of a conveying unit of a circulating type conveying system; the motor is arranged on the conveying unit and by means of which the motor can be cyclically operated along a support beam of the conveying system and/or the height of which the motor can be adjusted, the temperature monitoring device comprises a data acquisition module, a data transmission module and a data processing module; the data acquisition module is arranged on the upper side of the supporting beam and comprises an image recognition device and an infrared measurement device which are used for shooting images of the passing conveying unit and/or the motor thereof, respectively, identifying the number associated with the motor in the images, and infrared-measuring the temperature of the passing motor therebelow; the data transmission module performs data transmission in a manner of correlating the identified serial number with the measured temperature;the data processing module processes transmitted data and outputs a temperature monitoring signal. In addition, the invention also relates to a temperature monitoring method for the motor of the conveying unit of the circulating type conveying system and the circulating type conveying system.
Owner:BMW BRILLIANCE AUTOMOTIVE

Method and system for real-time calculation of phase shift signal, method and system for plasma diagnosis

The invention discloses a method and system for calculating dynamic phase shift signals in real time. The method includes the following steps: respectively segmenting the intermediate frequency signals of the measurement track and the reference track; A / D is converted into a digital signal; the obtained digital signals of the measurement track and reference track in the current period are respectively Fourier transformed into frequency domain signals, and the accurate frequency in the current period is obtained at the same time; according to the accurate frequency in the current period, the current period The frequency domain signals of the reference trace and the measurement trace are conjugated to obtain the phase difference. The invention also discloses a plasma diagnosis method and system. The method and system for real-time calculation of dynamic phase-shift signals of the present invention can realize unattended reliable real-time phase calculation and output, and the method and system for real-time calculation of phase-shift signals and the plasma diagnosis method and system of the above-mentioned system can further reliably realize Unattended real-time electron density and current density measurements.
Owner:SOUTHWESTERN INST OF PHYSICS

Device, system and method for steel rail parameter automatic measurement

The invention discloses a device, a system and a method for steel rail parameter automatic measurement, which belongs to the technical field of optical measurement. The steel rail parameter automatic measurement device comprises a steel rail longitudinal-displacement automatic measurement unit, a data transmission unit and a power supply module or further comprises a central processing unit and asteel rail temperature automatic measurement unit; the steel rail longitudinal-displacement automatic measurement unit comprises a marker, a marker receiving processor and a rail side spud pile or further comprises a light source compensator; the steel rail longitudinal-displacement automatic measurement can be realized through the steel rail longitudinal-displacement automatic measurement unit; the steel rail parameter automatic measurement system comprises two or more steel rail parameter automatic measurement devices and a common central processing unit; and the steel rail temperature stress automatic measurement can be realized through the steel rail parameter automatic measurement system. The invention can realize the all-weather measurement, has high measuring accuracy, can automatically search the section with the largest temperature stress for the steel rail and further avoids an accident.
Owner:BEIJING JIAOTONG UNIV

A Measuring Method of Donor-Acceptor Distance Distribution Based on Fluorescence Correlation Spectrum

The invention discloses a donor-acceptor distance distribution measuring method based on fluorescence correlation spectroscopy. Fluorescent labeled living cells of donors and acceptors are subjected to a selective donor excitation operation through a fluorescence correlation spectroscopy module of a laser scanning confocal microscope in different laser power. A correlation card acquires photon number fluctuation signals of a donor channel and an acceptor channel to form a self-correlation curve. Energy transfer rate and energy transfer efficiency can be calculated through triplet state analysis of the self-correlation curve of the acceptors. In addition, triplet state distribution of the energy transfer rate and the energy transfer efficiency can be inverted from the self-correlation curve of the triplet state of the acceptors through a maximum entropy algorithm so that donor-to-acceptor distance distribution can be calculated. A fluorescence correlation spectrum analysis method itself is an excellent technology of measuring concentration of a dilute solution, so that the measuring method can be used for measuring donor-acceptor non-paired fluorescence resonance energy transfer efficiency and donor-acceptor non-paired distance distribution after integration items of overlap items of the spectrum being corrected with respect to the donor-acceptor concentration proportion. The measuring method is convenient to use and high in measuring precision.
Owner:SOUTH CHINA NORMAL UNIVERSITY

Temperature measuring mechanism of ring main unit

A temperature measuring mechanism of a ring main unit is disclosed by the present invention, and comprises a cabinet body, the outer wall of one side of the cabinet body is movably connected with a cabinet door, the inner wall of the cabinet body is fixedly connected with a mounting plate, the outer wall of one side of the mounting plate is provided with a rectangular groove, the inner wall of the rectangular groove is fixedly connected with a mounting seat, the inner wall of the cabinet body is fixedly connected with a partition plate, the outer wall of one side of the partition plate is fixedly connected with a heat conduction mechanism, and one end of the heat conduction mechanism makes contact with the mounting plate. According to the invention, the heat conduction mechanism is arranged between the mounting plate and the partition plate, and a plurality of connecting mechanisms are arranged in the heat conduction mechanism, so that the temperature of different areas on the mounting plate can be conducted out; and a temperature measuring seat corresponding to the heat conduction mechanism is arranged in the detection box, and a temperature measurement probe in a detection mechanism in the detection box is matched to measure the temperature of the temperature measurement seat, so that the temperature of different areas on the mounting plate can be conveniently measured, and errors during measurement are reduced.
Owner:深圳市载宇电气技术有限公司

Absorption cuvette and on-line monitoring titration method for ammonia nitrogen

The invention relates to an absorption cuvette and an on-line monitoring titration method for ammonia nitrogen, and belongs to the field of analytical chemistry. The technical problem to be solved is to provide a new two-in-one device as a reaction container and a cuvette, and an on-line titration method for NH3-N with accurate measurement and good reliability. The invention is realized through the following technical scheme that the absorption cuvette comprises an absorption cell provided with at least two light transmission parallel planes, the lower part of the absorption cell is provided with a gas inlet, and the upper part of the absorption cell is provided with a titrating liquid inlet and an absorption liquid inlet. The absorption liquid is added into the absorption cell, a system automatically reads the transmittance of the absorption liquid in the absorption cell as a titrating end point T0; and after NH3 gas generated by the liquid to be detected is introduced into the absorption cell to react with the absorption liquid, the titration analysis is carried out, the system automatically and continuously reads the transmittance T1 of the reaction liquid during titrating, and the titration is finished when T1 is equal to T0. The method is accurate and reliable, and does not cause the phenomenon that the titration is not carried out or the titration does not stop.
Owner:四川天保汇同环境科技有限公司
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