38results about How to "Realize in-situ monitoring" patented technology

The invention relates to a device and a method for testing the fatigue mechanical property of a material under a tensile-bending composite load, and belongs to the field of precision scientific instruments and material testing. The device comprises a vibration isolation base, a supporting frame, an ultrasonic loading module, a hydraulic loading module, a tensile loading module and an ultrasonic flaw detection module; the supporting frame is connected with the vibration isolation base; the hydraulic loading module is connected with the supporting frame through a connecting flange; the ultrasonic loading module is connected with the hydraulic loading module through a thread; and the tensile loading module and the ultrasonic flaw detection module are arranged on the vibration isolation base.The device has the advantages as follows: high-frequency and high-load cross-range loading can be realized; ultrahigh-frequency bending fatigue loading and tensile-bending static dynamic composite load loading can be realized; and the tensile loading module can ensure accurate centering of tested material samples. The tested material samples made of different materials and having different sizes can be subjected to high-frequency fatigue testing under the static dynamic composite load; and a reliable means is provided for service performance analysis of key materials in aerospace and numerousfields.

The invention relates to a shield tunnel segment inner force monitoring method, in particular, a joint shield tunnel segment joint stress in-situ measurement method, and belongs to the crossing field of tunnel engineering field monitoring and construction technology. According to the method of the invention, a fiber grating pressure sensor is inserted into the interior of each segment, so that the sensors and the segments are connected together to form an integrated body to jointly bear a force; when the joint pressure of the segments is measured, a sheet rubber made of the same material with a rubber sealing strip of the corresponding shield segment is pasted on the outer surface of the corresponding fiber grating pressure sensor inserted into the segment, so that the correctness of load transfer can be ensured; the contact pressure of the rubber sealing strip at the joint of the shield segments is measured in real time, so that the stress condition of the joint of the shield segments in a tunnel construction and operation period can be determined, and the mechanical behavior and waterproof sealing performance of the shield segments can be analyzed, and therefore, the work condition of a shield liner joint can be evaluated. The joint shield tunnel segment joint stress in-situ measurement method of the invention has the advantages of high practicability and high effectiveness. With the method adopted, the stress state of the joint between the segments can be monitored in real time in situ, and the problem of difficulty in monitoring the inner force of the joint of the shield segments in the prior art can be solved.

The invention relates to a femtosecond laser processing parameter confocal Raman microspectroscopy in-situ monitoring method and device, and belongs to the technical field of laser precision detectionand femtosecond laser processing and manufacturing. A laser confocal axial monitoring module with a high axial resolution is organically integrated with a femtosecond laser processing system, a confocal system curve maximal point is utilized for conducting nanoscale monitoring and sample axial processing size measurement on the sample axial position, real-time focus fixing of the sample axial position and high-precision measurement of the size of a processed micro-nano structure are achieved, and the drifting problem and the high-precision online detection problem in the measurement process are solved; a confocal Raman microspectroscopy detection module is utilized for monitoring and analyzing information such as molecular structures of sample materials subjected to femtosecond laser processing, the information is integrated through a computer, microstructure femtosecond laser high-precision processing and micro-domain form performance in-situ monitoring analysis are integrated, and the controllability of microstructure femtosecond laser high-precision processing and the processing quality of the samples are improved.

The invention discloses a mixed potential type hydrogen gas sensor using strontium doped lanthanum ferrite as a sensitive electrode and a preparation method thereof, and belongs to the technical fieldof a gas sensor. The mixed potential type hydrogen gas sensor can be used for in situ detection of hydrogen gas at a high temperature, and consists of a perovskite oxide (La,Sr)FeO<3-Delta> sensitiveelectrode, a solid electrolyte (YSZ, GDC and the like) and a reference electrode (metallic Pt, Au and the like); and the sensitive electrode and the reference electrode can be positioned at the sameside or different sides of the solid electrolyte. The perovskite oxide (La,Sr)FeO<3-Delta> with excellent electrocatalytic activity on the hydrogen gas is used as a sensitive electrode material; and the built sensor has a high response value, excellent selectivity and high response-recovery speed on the hydrogen gas.

The invention relates to a femtosecond laser machining and monitoring method and device based on confocal Raman-LIBS-mass spectroscopy detection, and belongs to the fields of a laser precision detection technology and a femtosecond laser machining and manufacturing technology. A laser confocal axial monitoring module and a femtosecond laser machining system are organically fused, and the axial position of a sample is subjected to high-precision in-situ monitoring and sample axial machining size measurement by utilizing a curve peak point of a differential confocal system, so that the sample drift problem and the high-precision online detection problem in the measurement process are solved; and a Raman spectroscopy detection module, an LIBS spectroscopy detection module and a mass spectrograph are used for carrying out monitoring analysis on information such as molecular structures, elements, ions and the like of a sample material after femtosecond laser machining, and the information is fused through a computer, so that the high-precision femtosecond laser machining of a micro-structure and the in-situ monitoring analysis of the morphology performance of a micro-region are integrated, and the controllability of the femtosecond laser machining precision of the micro-structure, the machining quality of the sample and the like are improved.

The invention discloses a method for control and in-situ detection of enzymatic activity under irradiation of electronic beams. The method includes the following steps of 1, preparing a titanium dioxide thin-film field-effect tube; 2, carrying out enzyme immobilization; 3, putting a device into an SEM sample table, and adopting silicon as a gate electrode, wherein any two adjacent electrodes in agold electrode array are adopted as a source electrode and a leakage electrode, and the electrodes are connected with aerial connectors on a cavity through leads; 4, putting the device of the electrodes into a scanning electron microscope, and using the electronic beams for radiation; 4, conducting a conductance testing. On the basis of the titanium dioxide thin-film field-effect tube, enzymes arefixed to the field-effect tube, the electronic beams of the scanning electron microscope are adopted as the irradiation source, the electrodes of the field-effect tube are drawn to a semiconductor property analysis instrument outside an SEM cavity through the leads and a cavity connection port for conducting in-situ conductance measurement, and the enzyme activity is monitored through changes ofconductance. The generation of the electronic beams does not depend on any radioactive element, and in-situ monitoring of the enzyme activity under the irradiation of the electronic beams is achieved.

The invention discloses a distributed edge micro-cloud monitoring system based on a container technology. The system comprises a main control center and an edge computing platform; the main control center comprises a cluster management module, a cluster monitoring module and a data storage module; the edge computing platform is arranged in a local server of each transformer substation and communicates with the main control center, the edge computing platform comprises a data acquisition module, an edge Prometheus monitoring module and a local operation and maintenance management module, and when a network is smooth, the edge computing platform normally acquires operation data of the transformer substation and uploads the operation data to the main control center, and at the same time receives and responds to a management and operation and maintenance control command sent by the main control center; when the network is not smooth, the edge computing platform can also ensure basic operation and maintenance capabilities such as monitoring acquisition, local resource scheduling, local resource allocation and the like.

The invention discloses a shipborne support for a water quality monitoring monitor of an unmanned ship. The shipborne support comprises a placing frame, a collecting frame and a supporting frame, and the supporting frame is vertically fixed to a ship body of the unmanned ship; the collecting frame is located above the containing frame. The placing frame comprises two placing rods fixed to the supporting frame, and the heights of the placing rods are gradually decreased from the middle of the ship body to the outer side of the ship body. The collecting frame comprises two collecting rods fixed to the supporting frame, and the heights of the collecting rods are gradually increased from the middle of the ship body to the outer side of the ship body. The ends, located on the outer side of the ship body, of the two containing rods and the two collecting rods are each rotationally connected with a limiting ring, the right ends of the limiting rings are in an arc shape, the two limiting rings on the two containing rods are symmetrically distributed, and the two limiting rings on the two collecting rods are symmetrically distributed. The collecting frame is used for placing the collected mounting plate and the monitor, and the placing frame is used for placing the mounting plate and the monitor to be mounted. The invention further relates to an unmanned ship provided with the shipborne support.

The invention relates to a foundation layered settlement monitoring device and an assembly method thereof. The monitoring device comprises a settlement pipe which is vertically buried in a drill hole of a foundation, and is provided with a plurality of settlement monitoring units along the extension direction of the settlement pipe; each settlement monitoring unit comprises a displacement sensor arranged in the settlement pipe and an anchor head monitoring device connected with the displacement sensor; the anchor head monitoring device comprises an anchor head base, a telescopic anchor head arranged in the anchor head base and an anchor head driving source for driving the telescopic anchor head; a strip-shaped hole allowing the telescopic anchor head to penetrate through is formed in the side wall of the settlement pipe; the anchor head driving source drives the telescopic anchor head to penetrate through the strip-shaped hole to be inserted into the foundation; and the telescopic anchor head can move up and down in the strip-shaped hole along with the foundation. According to the assembling method, the laying and using method of the foundation layered settlement monitoring device is provided, the workload of drilling and burying is reduced, in-situ monitoring of different positions is achieved, and the monitoring efficiency and the monitoring precision are improved.

The invention relates to a femtosecond laser machining and monitoring method based on back light splitting pupil differential confocal Raman-LIBS-mass spectroscopy detection, and belongs to the fieldsof a laser precision detection technology and a femtosecond laser machining and monitoring technology. The method can be used for femtosecond laser machining and online monitoring, and online detection of physical property comprehensive parameters. A back light splitting pupil laser differential confocal axial monitoring module and a femtosecond laser machining system are organically fused, and the axial position of a sample is subjected to high-precision in-situ monitoring and sample axial machining size measurement by utilizing a back light splitting pupil differential confocal system; anda Raman spectroscopy detection module, an LIBS spectroscopy detection module and a mass spectrograph are used for carrying out monitoring analysis on information such as molecular structures, elements, ions and the like of a sample material after femtosecond laser machining, and the information is fused through a computer, so that the high-precision femtosecond laser machining of a micro-structureand the in-situ monitoring analysis of the morphology performance of a micro-region are integrated, and the controllability of the femtosecond laser machining precision of the micro-structure, the machining quality of the sample and the like are improved.