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

The invention discloses a method and a system for realizing a P-type nitride enhanced HEMT (High Electron Mobility Transistor) through in-situ etching monitoring. In one typical embodiment, through directly exposing an etching surface of an etching sample in a plasma and placing a test wafer plated with electrodes in an etching position equivalent to a sample in etching equipment, the etching rate on the sample is equal to that on the test wafer, so that an etching condition of a P-type semiconductor on the sample can be monitored through the change of the current between two electrodes on the test wafer, and then the obtained current signal is input into a computer and the computer controls the etching condition to realize a controllable and precise etching technology with feedback. According to the method and the system, the defects caused by realizing different etching depths through the single etching condition, the single etching rate and the etching time simply in the existing etching technology are effectively solved, and preparation of the P-type cap layer enhanced HEMT device can be realized at high precision and high repeatability.

The invention is a method for in-situ monitoring of steel bar corrosion and stress state in a reinforced concrete structure. The method is to construct a prestressed self-balancing system, apply initial prestress to a steel bar sheet made of the same material as the steel bar in the concrete, and embed it in the concrete structure. Middle; set continuous strain measuring points at different heights on the steel bar sheet to monitor the stress state in this area; the steel bar sheet forms a plane stress state, and stress concentration occurs after local corrosion, and the strain changes at the continuous measuring points at different heights of the section reflect the initial corrosion of the steel bar Time, corrosion rate and degree of corrosion. The invention can be buried at different depths from the concrete surface, so as to realize the monitoring and corrosion risk assessment of the corrosion degree of steel bars at different depths and the stress state of the buried area. It is not affected by environmental factors such as various ions, temperature and humidity in concrete, and is especially suitable for the evaluation of the corrosion risk and corrosion degree of reinforced concrete structural steel bars in splash areas and tidal range areas in marine corrosion environments.

A system and method for online monitoring the degree of decay of lubricating grease by utilizing infrared dot laser emitters are disclosed. A plurality of the infrared dot laser emitters emit infraredlight with different wavebands onto the lubricating grease; reflected light signals are received by luminous intensity sensors, and processed by a sing chip microcomputer to obtain infrared luminousintensity changes of wavebands corresponding to characteristic functional groups such as methyl, carbonyl and hydroxyl; a lubricating grease service lifetime parameter K model quantized by characteristic quantities is built by utilizing an experiment database; and the degree of decay of lubricating grease is represented by the parameter K in real time and quantificationally to make a real-time judgment on the service lifetime, thus achieving on-line monitoring of the service lifetime of the lubricating grease.

The application relates to a solid rocket motor housing, a solid rocket motor and a manufacturing method thereof. The solid rocket motor housing includes a winding layer, a thermal insulation structure, a plurality of optical fibers and a plurality of sensors. The charge space of the thermal insulation structure is provided with an optical path channel extending along the circumference of the thermal insulation structure; the winding layer is wound outside the thermal insulation structure. A plurality of optical fibers are arranged at intervals along the outer circumference of the thermal insulation structure, and the optical fiber is bonded to the thermal insulation structure. The optical fiber includes a lead-out end and an embedded end. It is in the optical channel and extends into the charge space; the embedded end of the optical fiber is connected with a sensor, and the sensor is used to monitor the propellant grain (the charge interface or the inside of the grain). The solid rocket motor comprises a solid rocket motor case and a propellant grain filled in the charge space.

The invention relates to a vertical electrochemical battery device for in-situ photodynamic measurement. The device comprises a battery upper cover, a battery lower cover, a quartz optical window, a fixing electrode inner bushing, an electrode part and a conductive connection part. The device is characterized in that the electrode part is composed of a research electrode, a membrane and a counter electrode. The cross sections of the electrodes are parallel to the quartz window. A counter electrode sheet is fixed to an open groove of the fixing electrode inner bushing. The electrode part is arranged between the counter electrode sheet and a research electrode sheet. The counter electrode is arranged on one side of the counter electrode sheet, and the research electrode is arranged on one side of the research electrode sheet. By means of the placement mode of the electrode sheets, the cross sections of the electrode sheets can be observed, in-situ monitoring of the diffusion process of lithium ions and interface conditions of current collectors and substrates is achieved, and the movable electrode sheets can meet substrate and constraint conditions required by different tests.

The invention relates to an aquatic plant grease-cellulose acetate composite semipermeable membrane. Inexpensive and protogenetic aquatic plant grease is used as a main raw material, and highly hydrophilic cellulose acetate is used as an outer membrane material to prepare the aquatic plant grease-containing semipermeable membrane which has the advantages of uniform grease dispersion, large specific area and integrated structure. The balance time required for collection of hydrophobic organic pollutants in a water body can be shortened greatly, and costs of raw materials can be reduced significantly. The invention also provides a preparation tool and a preparation method for preparation of the aquatic plant grease-cellulose acetate composite semipermeable membrane. In addition, the invention provides a supporting external device suitable for in-situ sampling of organic pollutants in lakes, rivers and other water bodies. The simulation of aquatic plants can be realized for in-situ, accurate, convenient and low-cost monitoring of organic pollutants in water bodies.

The invention discloses a two-wire loop power supply digital display intelligent temperature controller and a transmitter integrated instrument, which is used to connect with PLC controllers or DCS systems or electromagnetic valves, contactors and other equipment to realize temperature monitoring and remote transmission. , control, alarm and equipment protection, the present invention makes the temperature instrument step into micro-power consumption (micro-ampere level) from low power consumption (milliampere level), which will cause the fundamental improvement of the reliability and stability of the temperature instrumentation, and realize the On-site temperature monitoring and 4‑20mA remote transmission, control and alarm, remote transmission of the on-site equipment temperature signal to the DCS system or PLC controller, to complete the monitoring, control, alarm and alarm of equipment in various industries such as industry and transportation protection; the present invention combines temperature transmitter, temperature control switch, and digital display functions into one, realizes the micro power consumption 1-5mA signal mode and electrical isolation mode of the transmitter, and realizes the two-wire system of the temperature controller, without A separate power supply is required (three-wire thermostats are common on the market), but power is supplied through the signal loop to unconditionally replace the mechanical thermostat, which solves the bottleneck that the mechanical thermostat cannot replace for a long time. The protection failure (misoperation and refusal) caused by mechanical controller jamming and drift solves the safety hazard that the mechanical thermostat cannot monitor and cause the protection system to be uncontrollable, thereby improving the reliability of the protection system.

A metal resistance heating device coupled with laser processing, including a bracket, on which a mobile platform that moves horizontally and vertically is installed, and a heating device is placed on the mobile platform; the heating device includes an outer wall of a furnace body, and one end of the outer wall of the furnace body is connected to a furnace tail wall , the other end of the outer wall of the furnace body is connected to the furnace body top cover, and the outer side of the furnace body top cover is connected to the furnace head pushing device; the inner side of the furnace tail wall is connected to the furnace tail conductive block, and the furnace tail conductive block is connected to one end of the workpiece. One end is connected through the furnace head conductive block, furnace head electrode, series connection column and fixed conductive block. The fixed conductive block is equipped with a furnace head electrode top cover, and the fixed conductive block and furnace head electrode top cover are installed on the furnace body top cover; the workpiece is A lens window is provided on the outer wall of the upper furnace body, and a heat insulating layer is provided on the inner side of the outer wall of the furnace body; the fixed conductive block is connected with a furnace top pushing electrode; the invention uses a laser to process the workpiece while heat treatment, and the workpiece is Heat treatment offers new degrees of freedom.

This patent relates to a battery accessory for nuclear magnetic resonance in-situ testing, including a battery fixing frame, a cylindrical shell, a pressurized nut, a first fixing cover with a central through hole, a first sealing ring, a second sealing ring, a first insulating seal Pad, first current collector, positive electrode sheet, separator, negative electrode sheet, second current collector, second insulating gasket, third sealing ring, fourth sealing ring and second fixed cover with central through hole. The invention has the advantages of simple device, good sealing performance, convenient loading and unloading operation, and can efficiently realize in-situ on-line detection of the battery in a nuclear magnetic resonance spectrometer. The patent also discloses a test method for in-situ detection of battery charging and discharging process using a nuclear magnetic resonance spectrometer.

The invention discloses an in-situ monitoring device for the self-purification capacity of pollutants in a shallow water area. The in-situ monitoring device comprises a lower fixed sleeve and an upper detachable sleeve, wherein both the upper sleeve and the lower sleeve are transparent cylinders with top and bottom openings respectively; a vertical ruler is arranged on the inner wall of the upper detachable sleeve; the lower fixed sleeve is sleeved with a plastic board capable of vertically sliding outside; four stainless steel rods respectively penetrate through four corners of the plastic board; grooves are respectively formed in circumferential surfaces where the two sleeves are abutted; corresponding lugs with threaded holes are respectively and uniformly distributed at abutted end parts; and when the upper sleeve and the lower sleeve are coaxially connected, transparent rubber rings are embedded into the grooves in the circumferential surfaces of the two sleeves and the two sleeves are sealed into a whole through lug screwing screws. The in-situ monitoring device is simple in structure and can be used for analyzing the change of the load of pollutants in the enclosed water body along the retention time by continuous or discontinuous sampling, so as to conveniently quantify the self-purification capacities of the pollutants in different time intervals in an in-situ manner; and the trend of the pollutants can be quantitatively analyzed by adopting means such as isotopic tracing and the like, so that the in-situ quantification and standardization of the self-purification capacity evaluation are realized.