39results about How to "Applicable monitoring" patented technology

The metal in-situ statistical distribution analysis method, mainly relates to chemical components and its state analysis of metal amterial, which includes the following steps: exciting light-source system to implement precombustion-free continuous excitation of sample and synchronous scanning location, making excited spectrum become into linear spectrum, collecting and recording spectrum intensity of single spark discharge, statistically analyzing collected and stored spectral line intensities of linear spectrums, using computer to process said data so as to measure the parameters of chemical component, segregation, looseness and foreign impurity distribution of sample.

The invention discloses a multi-mode coupling miniature electric field sensing device based on a piezoelectric effect and a piezoresistive effect. The miniature electric field sensing device comprisesa horizontally placed semiconductor thin film, a horizontally placed substrate is arranged under the semiconductor thin film, a cavity structure is formed between the semiconductor thin film and thesubstrate through support of a middle interlayer, an upper surface of the semiconductor thin film is evenly provided with a piezoresistive material, the piezoresistive material comprises a transverse-transverse mode piezoelectric film and a transverse-longitudinal mode piezoelectric block, and in a transverse-transverse mode, a top surface of the semiconductor thin film is provided with the piezoelectric film; and in a transverse-longitudinal mode, a bottom surface of the semiconductor thin film is provided with the piezoelectric block. The multi-mode coupling miniature electric field sensingdevice based on the piezoelectric effect and the piezoresistive effect, provided by the invention, has the beneficial effects of being small in volume and highly integrated, effectively reducing circuit temperature drift, reducing zero drift, improving measurement accuracy, being capable of realizing electric field accurate measurement under wide band, high field intensity and complex environment,and also being capable of being mounted and maintained in the case of being electrified.

The invention discloses an early warning method for environment risk source, and the method comprises a risk source character threshold value database storing monitoring data, a risk source information database storing the risk source position information and source strength information, the technical point is as follows: 1) calculating risk grade according to the formula, collecting risk source date of local region; 2) building risk early warning system according to the risk source; 3) setting risk source safe threshold value; 4) comparing the risk source monitoring data with the threshold value at real time, once the monitoring data is larger than the limit, calculating the over degree and giving an alarm to the head centre and branch centre. The early warning method for environment risk source can solve the problem that the system overall performance is reduced, the head centre system control load is high and the system structure is complex.

The invention discloses a preparation method of a Pd / W18O49 composite material for improving performance of hydrogen sensors. The Pd / W18O49 composite material is a sea urchin shaped nanosphere which is combined from nanorods, the diameter of the sea urchin shaped nanosphere is 600-800nm, the diameter of the nanorod is 10-15nm, and precious metal palladium nanometer particles are attached to the surface of the nanorods. The sea urchin shaped W18O49 powder comprises a hierarchical structure which is composed of many nanorods, the specific surface area is very large, many active sites are provided for gas reaction, and at the same time the structure is good for adsorption and diffusion of gas; the surface of the sea urchin shaped W18O49 powder is modified with precious metal palladium nano particles which have higher activity for catalytic oxidation of hydrogen. Under combined action of these factors, excellent gas-sensitive characteristics are provided for the composite material.

The invention discloses an optical fiber sensing probe application system and a preparation method of the optical fiber sensing probe for detecting the electric charge of supercapacitor electrodes, and belongs to the technical field of optical fiber sensing technology applied to electrochemistry. The invention solves the problems that the existing supercapacitor electrode charges cannot be detected in real time, and avoids the problem that the temperature change in the charging and discharging process has an influence on the detection results. The invention provides an optical fiber localized surface plasmon resonance (LSPR) sensing technology for supercapacitor monitoring. The sensing region is formed based on the principle of LSPR by adsorbing gold nanoparticles (AuNPs) on the core of the multimode fiber. The optical fiber is implanted inside the supercapacitor to realize in-situ real-time monitoring of the charging and discharging process. Compared with the traditional surface plasmon resonance (SPR) sensor, the optical fiber LSPR sensing probe obtained by the present invention is insensitive to temperature fluctuations, and is more suitable for supercapacitor monitoring.

The invention discloses a multi-frequency information fusion-based intelligent positioning system and a multi-frequency information fusion-based intelligent positioning method. The intelligent positioning system comprises a plurality of electric three-variable CCD (charge coupled device) cameras which are provided with controllable holders and are distributed in a monitored region; the CCD cameras are communicated with a terminal; each object to be monitored carries an electronic tag; a plurality of wireless sensors are arranged on the periphery of the monitored region; the wireless sensors acquire the data information of the electronic tags; meanwhile, each wireless sensor is communicated with the terminal; and the terminal tracks the position of the object to be monitored according to the acquired data information. By the method, the aim of positioning and tracking accurately is fulfilled by performing information analysis and fusion on shot data.

The invention belongs to the technical field of metal oxide gas sensors, in particular to a composite sensitive material ZnO / ZnFe 2 o 4 The design, synthesis and application in acetone gas sensor. In the process of designing and preparing sensitive materials, the present invention firstly uses microwave heating technology to successfully synthesize ZnO hollow microspheres, and then grows a layer of ZnFe on the surface of ZnO hollow microspheres by means of epitaxial growth. 2 o 4 Nanosheets. The whole synthesis process is simple, efficient and energy-saving, and is suitable for large-scale production. Compared with single-component ZnO hollow microspheres, after ZnFe 2 o 4 The ZnO gas sensor modified by nanosheets can show more excellent gas sensing characteristics to acetone. In addition, this type of gas sensor is small in size and low in cost, making this ZnO / ZnFe-based 2 o 4 The gas sensor with heterogeneous structure is more suitable for the monitoring of acetone gas.

The invention belongs to the technical field of bionic micro-aircraft, and provides a dragonfly-like double-flapping-wing micro-aircraft, which includes a body shell, a body head, a body tail, and four wings symmetrically arranged on both sides of the body shell, each of which The wings are all rotatably connected to the body shell through universal ball bearings, and four control mechanisms for controlling the flapping of the wings and changing the angle of attack of the wings are arranged in the body shell, and each of the wings One end of each passes through the body shell and is connected with its corresponding control mechanism. The micro air vehicle highly simulates the aerodynamic layout design of dragonfly wings. It adopts a double-row layout scheme, which can use the favorable aerodynamic interference between the front and rear wings to achieve high aerodynamic efficiency. Each wing can be individually controlled to achieve individual flapping and pitching. , and then realize a variety of maneuvers, improve aerodynamic performance and maneuverability.