40results about How to "Unaffected by the surrounding environment" patented technology

The invention discloses a Beta-Ga2O3 based solar-blinded ultraviolet photoelectric detector array and a preparation method thereof, and relates to the photoelectron technical field; the detector array comprises the following structures from bottom to top: a Beta-Ga2O3 luminous absorption layer, a lower electrode layer, an oxide film insulating layer and an upper electrode layer; the Beta-Ga2O3 luminous absorption layer is formed by growing a Beta-Ga2O3 film on a substrate; the lower electrode layer comprising column wires and interdigital electrodes is formed on the Beta-Ga2O3 luminous absorption layer; the oxide film insulating layer is arranged on the lower electrode layer; the most top layer is the upper electrode layer comprising line wires; the oxide film insulating layer is arranged in middle of the intersection portion of the line wires and column wires; the anode of each column of the interdigital electrode is connected on the column wire of the same column; the line wire is connected with the cathode of each line interdigital electrode; the prepared detector array is packaged by a ceramic packaging unit, thus obtaining the Beta-Ga2O3 based solar-blinded ultraviolet photoelectric detector array. The Beta-Ga2O3 based solar-blinded ultraviolet photoelectric detector array is strong in process controllability, low in cost, simple in operation steps, good in repeatability, short in development period, and can be massively produced.

A transient flow problem method-based oil pipeline dropping detection device belongs to the field of operation and maintenance of a long-distance oil pipeline. The invention aims to solve the problems that the existing quantitative and positioning device for detecting the dropping of the oil pipeline is high in use cost and time-consuming and is easily influenced by environment. The transient flow problem method-based oil pipeline dropping detection device comprises a processor, a storage, a data collecting card and M pressure sensors; the M pressure sensors are uniformly arranged on the oil pipeline; the pressure signal output end of each pressure sensor is connected with the pressure signal input end of the data collecting card of which the pressure signal output end is connected with the pressure signal input end of the processor; the data transmission end of the processor is connected with the data transmission end of the storage; the processor processes the collected pressure signal in real time, and a transient flow problem method is adopted for judging whether the oil pipeline dropping exists or not.

The invention relates to an epoxy-pouring full-insulation solid isolating switch, which comprises an isolation body, a grounded contact, an isolation contact, a middle contact, an isolation moving contact, a driving screw rod, a fixed nut and a driving gear part, wherein the grounded contact and the isolation contact are arranged at two ends of the isolation body respectively, the middle part of the isolation body is provided with the middle contact, the upper end of the isolation contact is connected with a bus contact through a bus-bar, the bus contact is arranged on the top of the isolation body, and the isolation moving contact is always contacted with the middle contact through a watch chain sensing finger. The isolation switch slides between two positions of the middle contact and the isolation contact or the middle contact and the grounded contact to form the conduction or the isolation grounding of the isolating switch. The entire isolating switch is poured into a fully-sealed integral structure with epoxy resin.

The invention discloses an active-type infrared camouflage structure based on vanadium dioxide, and the structure comprises a heating substrate, a vanadium dioxide film, and an electrode pair. The vanadium dioxide film is disposed on the upper surface of the heating substrate in a manner of coating or vapor plating The heating substrate changes the temperature of the vanadium dioxide film through current heating while providing support for the vanadium dioxide film. The electrode pair is located at two ends of the heating substrate, and is connected with an external power supply and the heating substrate. The electrode pair is used for changing the temperature of the heating substrate, so as to adjust the change of the emissivity of vanadium dioxide. The structure can achieve low-power-consumption and quick adjustment infrared camouflage.

The invention provides a smoking machine with a constant flow velocity. The smoking machine comprises a cigarette clamp holder, a total particulate matter catcher, a reversing valve, a gas flow detection control device, a vacuum pump and a mainstream smoke collecting opening, wherein the cigarette clamp holder is arranged on an upper panel; the total particulate matter catcher is connected onto a mainstream smoke pipeline at the back end of clamp holder; an organic glass cover used for collecting sidestream smoke is mounted on the upper panel; a sidestream smoke outlet is formed in the upper panel positioned in the glass cover; a sidestream smoke filter screen is additionally arranged at the sidestream smoke outlet, and the sidestream smoke outlet is communicated with a sidestream smoke blower and a sidestream smoke collecting opening; the total particulate matter catcher is mounted on the upper panel; the reversing valve, the gas flow detection control device and the vacuum pump are arranged on a bottom plate; a cleaning gas circuit interface is arranged on the reversing valve. The smoking machine with the constant flow velocity, provided by the invention, has the advantages that smoking flow quantity of a cigarette can be stabilized, the setting and control of the constant flow velocity can be achieved, a smoke passage can be cleaned timely, influences on experimental results are reduced greatly, the mainstream smoke and sidestream smoke can be collected in an expanded manner during cigarette burning, and analysis and detection to compositions of the mainstream smoke and the sidestream smoke can be achieved.

The invention discloses a fully-automatic high-head sewing machine. The fully-automatic high-head sewing machine comprises a support, an operating platform and a sewing machine body, the operating platform is fixedly arranged on the support, the sewing machine body is fixedly arranged on the operating platform and provided with an intelligent control mechanism and a sewing mechanism, a feeding mechanism is arranged at the position, opposite to the sewing mechanism, of the operating platform, multiple photoelectric sensor probes are arranged between the sewing mechanism and the feeding mechanism, a driving motor is further arranged below the operating platform and connected with the sewing mechanism, and the sewing machine body is further fixedly provided with an audible and visual alarm device. The fully-automatic high-head sewing machine is simple in structural principle, convenient to use, high in automation degree and capable of achieving multiple functions such as automatic sewing, automatic calibration and failure alarm, and sewing efficiency is improved.

The invention relates to a front driver speed measuring device. The front driver speed measuring device comprises a bearing seat, wherein a spline shaft is arranged in the bearing seat through a rolling bearing; the front end of the spline shaft is provided with a spline inner hole which is connected with a front driver output shaft spline; the back end of the spline shaft is connected with a speed measuring encoder through an elastic shaft coupling; the speed measuring encoder is fixedly arranged on an encoder seat; the encoder seat is fixedly arranged at the back end of the bearing seat; a pair of transverse beams for mounting the front driver speed measuring device on a longitudinal beam of a front driver bracket is fixedly arranged at the lower end of the bearing seat; a tongue plate is arranged between the transverse beams; the tongue plate is provided with a locking bolt for fixing the tongue plate on a transverse beam of the front driver bracket. The front driver speed measuring device has the advantage that the revolving speed of a front driver output shaft can be measured accurately.

The invention provides a desert moisture acquisition device. The desert moisture acquisition device comprises a moisture acquisition device body and a condensing device. The water acquisition device body comprises a cylinder, a heater and an air exhauster. A constant pressure valve is arranged on the side face of the cylinder, an inner cavity of the cylinder is communicated with external air through the constant pressure valve, an acquisition opening is formed in the lower end of the cylinder, a partition net is arranged in the portion, close to the acquisition opening, of the inner cavity of the cylinder, the heater and the air exhauster are located at the upper end of the cylinder, an air inlet of the air exhauster is communicated with the inner cavity of the cylinder, an air outlet of the air exhauster is communicated with an air inlet of the condensing device, and a water outlet and an exhaust port are formed in the condensing device. The desert moisture acquisition device has the following advantages that moisture in sand is evaporated in negative pressure environments, moisture evaporation can be quickened, follow-up condensing efficiency is higher, water outflow is quicker, and water intake efficiency is obviously improved; the desert moisture acquisition device is compact in structure, convenient to use, free of influences of surrounding environments, capable of being used in multiple environments and high in universality.

A jade-type calligraphy picture is composed of a decorative plate with a decorative frame, and the jade-type calligraphy modules made of jade powder and resin. Its preparing process includes such steps as using silica gel to make the moulds, proportionally mixing jade powder with resin, stirring, pouring in said moulds, natural drying, sticking the calligraphy modules onto a decorative plate and installing frame.

The invention provides a close-distance fixed point restored sound wave forming method. The method comprises the steps of generating at least one audio signal; and generating at least two high frequency carrier signals corresponding to the audio signal. The audio signal is loaded to the corresponding high frequency carrier signals, thereby forming at least two loading signals. The loading signals are sent to a space intersection area for superposition, thereby forming a close-distance fixed point restored sound wave. The close-distance fixed point restored sound wave has high directivity, so that a close-distance independently sealed hearing area is formed in the space intersection area, and the sound wave is not interfered by external environments.

The invention relates to a material level detection device and method of a straw baler, and belongs to the technical field of agricultural machinery. According to the technical scheme, a detection blade (21) on a detection rod (16) enters a preset height position of a stock bin (5) of the straw baler, and a motor shell (14) does not move when a motor shaft continues to rotate; and when materials in the stock bin (5) reach the preset height, counter-acting force drives a motor arranged in the box body (10) in a suspended manner to rotate reversely, a positioning piece (20) triggers an output joint close to a switch (19) to act, and a feeding mechanism of the straw baler is controlled to stop feeding. The material level detection device has the advantages that the actual height of the materials in the stock bin can be visually determined, affects by the surrounding environment are avoided, it is guaranteed that produced straw bags meet the standard requirement, the structure is simple, the maintenance cost is low, and use is convenient.

The invention provides an air wing type airflow directional load transportation air vehicle. The air wing type airflow directional load transportation air vehicle is technically characterized in that a lifting system comprises wings, lifting ducts and airscrews, a control room is arranged in front of a fuselage, the lifting ducts are arranged on the left side and the right side of the middle of the fuselage, the airscrews are located in the lifting ducts, jet windows are symmetrically formed in the two sides of the fuselage, the lower portions of the lifting ducts are communicated with the jet windows, the wings are symmetrically arranged at the positions, outside the jet windows, of the two sides of the fuselage, the section of each wing is a cambered surface bulging outwards, and transmission shafts of the airscrews are connected with a power transmission system in the control room; a propelling system comprises propelling ducts, propelling jet pipes and fans, the propelling ducts are close to the rear half part of the fuselage and are symmetrically arranged on the two sides of the fuselage, the rear portions of the propelling ducts are connected with the propelling jet pipes, and the fans are arranged in the propelling ducts. The lifting ducts of the air wing type airflow directional load transportation air vehicle can form directional airflow, the airflow is gather together through the wings to form air wings to rapidly lift up the fuselage, and the air vehicle takes off or descends without being influenced by the surrounding environment and is more flexible and convenient to use.

The invention discloses a method for determining a cavitation threshold value of liquid metal, and relates to the field of acoustic cavitation of the liquid metal. The method aims to solve the technical problem that the cavitation threshold value of the liquid metal cannot be determined at present. The method comprises the following steps: shooting cavitation characteristics of a parent metal/liquid metal interface in the liquid metal ultrasonic-assisted spreading process by using high-speed photography; after cavitation shooting, measuring the area, where cavitation cannot happen, of the spreading front edge of the liquid drop; simulating the spreading process of the liquid drop through a finite element simulation method, and extracting the sound pressure of the edge of the area where cavitation cannot happen, namely a cavitation threshold value. The method is simple to operate, low in cost and accurate in result; and the method is not limited by liquid metal components and has a wideapplication range. The method is used for determining the cavitation threshold of the liquid metal.