37results about How to "Ensure safe application" patented technology

The invention discloses an internal short-circuit detection method of a power battery. The internal short-circuit detection method comprises the following steps: detecting whether lowest voltage of the battery is lower than the set value and lasts for the preset time or not when a vehicle runs again or is charged, if so, judging the existence of short circuit, and performing maintenance operation on the battery through a prompt of a BMS (battery management system); identifying the difference of the battery in the static state through the BMS when the battery is arranged at the discharge tail end, if the difference in the capacity of the battery is too great, exceeds the set value and lasts for the preset time, judging the existence of the short circuit in the battery, emitting an alarm through the BMS and reminding of performing the maintenance operation on the battery; and recording the number of times of achieving cutoff voltage of the battery in the BMS, when the difference in the number of times of charge cutoff or discharge cutoff of the battery is larger than the set value, judging the existence of the short circuit in the battery, emitting the alarm through the BMS and reminding of performing the maintenance operation on the battery. According to the internal short-circuit detection method disclosed by the invention, the internal short circuit of the battery can be identified through a variety of means, and the internal short-circuit situation of the battery can be identified to the greatest extent by combining with a statistical method on the basis of long-term operation data.

The invention discloses light building exterior wall fireproof and heat insulating material prepared by slag wool. The material is characterized by comprising the following components by mass percent: 30 to 60 percent of slag wool, 15 to 30 percent of desulfurized gypsum, 15 to 30 percent of fly ash, and 10 to 20 percent of No. 425 cement. The preparation method comprises the steps that the slag wool and water are mixed in mass proportion of 1:1 and stirred into slag wool slurry; the desulfurized gypsum, the fly ash and the No. 425 cement are mixed according to the mass ratio and put into a proportioning bin to be mixed, proportioned and stirred, so as to be prepared into raw material slurry; the raw material slurry is fed onto a grid type chain conveyer to be molded, so as to be manufactured into wet formed board; and the wet formed board is cut off, dried, cut and shaped, and then the light building exterior wall fireproof and heat insulating material prepared by the slag wool is obtained. The material has the advantages that the problem of poor water absorbance of a slag wool flat plate is solved, the tensile and compression strength is improved, and the phenomena of shrinkage and cracking are avoided. The material integrates light weight, fire resistance, heat insulation and moisture protection, and belongs to novel materials for building walls.

The invention provides a temperature measuring system for an induction cooker and an induction cooker including the same. Wherein, the induction cooker includes: an insulating upper cover configured to be fixed at the opening position of a panel, the upper surface of which includes a concave second ring with a hole in the middle; a sealing ring is embedded in the second ring of the insulating upper cover, It is used for sealing between the panel and the insulating upper cover; the inner core sensor is configured to be freely retractable from the insulating cylindrical enclosure of the insulating upper cover; the insulating waterproof and draining bracket of the insulating panel is connected to the insulating upper cover through a buckle, and the inner The inner core sensor is provided; and the leak-proof sealing ring and the spring are fixed on the insulating cylinder of the inner core sensor. The structure of the induction cooker temperature measurement system of the present invention realizes accurate temperature measurement technology, has fast response speed, high sensitivity and high accuracy.

The invention discloses a property characterizing method of a power station boiler stainless steel elbow. During a power station boiler production process, elbow technology is applied in a large scaleto cold-bending small-diameter steel pipes, the shape, the size, the performance and the like of the cold-bent steel pipes can change, and the elbow parts of the cold-bent steel pipes turn to be theweak parts of the steel pipes, particularly of austenitic stainless steel. According to the power station boiler stainless steel elbow property characterizing method, a Leeb hardness tester is used for measuring the hardness differences of different positions of elbows to characterize the properties of the elbows, and measurement results can be converted into common Brinell hardness values, so that the elbow properties can be characterized under the condition of not damaging elbow bodies, and the elbows requiring solution treatment can be screened out to ensure safe application of power station boiler stainless steel elbows. The property characterizing method of the power station boiler stainless steel elbow can be applied to property detection of stainless steel elbows.

The invention relates to a thermal analysis device which comprises the components of a single-chip microcomputer that is connected with a temperature sensor, a pressure sensor and a gas sensor and is used for analyzing and processing received data; an operation display screen which is connected with the single-chip microcomputer and is used for operating, setting and displaying thermal analysis parameters; a gas discharging valve which is connected with the single-chip microcomputer and is used for discharging inner pressure of an analysis tank; a wireless RF transceiver module which is connected with the single-chip microcomputer and is used for transmitting and receiving a wireless network signal; external equipment which is wirelessly connected with the wireless RF transceiver module through a GPRS wireless network and is used for remote controlling and inspection; a first cyclone dust collector which is connected with the single-chip microcomputer through a driving controller and is used for eliminating dust that is generated by a spiral feeder; and a second cyclone dust collector which is connected with the single-chip microcomputer through the driving controller and is used for eliminating the dust that is generated by the spiral feeder. The thermal analysis device has advantages of high intelligent degree, high automatic degree, high safety performance and clean working environment.

The invention provides an intelligent tail box fingerprint identification method and system based on a high-quality template, and relates to the field of fingerprint identification. By obtaining multiple sample fingerprint images, and then input multiple sample fingerprint images into the preset deep hash coding model to obtain the template fingerprint image, then obtain the fingerprint image to be detected, and then treat the detection fingerprint image and the template fingerprint image respectively Perform image decomposition to obtain multiple scales of fingerprint images to be detected and template fingerprint images, and then use the sharpening convolution kernel to sharpen the fingerprint images to be detected at each scale and the template fingerprint images of each scale to obtain the sharpness of each scale. Finally, compare the sharpening results of each scale, generate and generate the recognition result of the fingerprint image to be detected according to the comparison result, realize the comparison of fingerprint images at multiple scales, improve the accuracy of fingerprint recognition, and ensure the smart tail Box security applications.

The invention relates to an inert gas protection method when an explosion-proof lithium battery power source is burned, and belongs to the technical field of mining lithium batteries. The technical solution is as follows: when the battery pack (10) burns and explodes, the battery pack is enclosed in an inert gas (9) filled with oxygen to reduce, eliminate or weaken the explosion intensity of the battery pack; the sealing liquid leaks in the sealed inert gas At the same time, the flame formed by the combustion and explosion of the battery pack is cooled. The beneficial effects of the invention are as follows: to ensure safe application in coal mines, use inert gas to isolate oxygen when lithium batteries catch fire and explode, reduce, eliminate or weaken the explosion intensity of battery packs, and seal liquid and flame arrester (fire arrester) to cool down the combustion flame of the battery Extinguish the flame, do not cause or induce the explosion of external explosives, meet the special requirements of mine explosion-proof equipment, and have great significance for the application of large-capacity lithium batteries in coal mines and explosive places.

The invention relates to a method for digital watermarking of anti-constant projection transformation vector map data, which can effectively solve the problem of completely detecting the copyright mark of the watermark when the original projection information is unknown, and improving the execution efficiency and accuracy of watermark detection. The identified binary image is used as a watermark, encrypted, and then converted into a one-dimensional watermark coding sequence; input the vector map data to be embedded in the watermark, and extract linear elements in sequence according to the file storage order; perform spread spectrum processing on the watermark; Perform polyline forward transformation on the feature, and express the anchor point with length variable and angle variable; embed watermark to the angle variable of the anchor point of the linear element; perform inverse polyline transformation on the linear element, restore the anchor point of the linear element to the plane coordinate representation Carry out watermark detection on vector map data containing watermark information, the method of the present invention is simple, easy to operate, improves watermark detection efficiency, and ensures safe application of vector maps.

The embodiment of the invention discloses an information processing method and device, and a computer readable storage medium applied to a smart home system. The method comprises the following steps:collecting biological feature information and current motion trail information of a to-be-identified object when detecting the to-be-identified object; determining identity information of the to-be-identified object based on the biological feature information; and realizing a first function based on the identity information, the current motion trail information and the preset function realizationpolicy, wherein the preset function realization policy is used for representing a corresponding relation between the motion state of the to-be-identified object with successfully verified identity information and the preset function, and the first function is at least one in the preset function.

The invention relates to a TKX-50 coating method, in particular to a 1,1'-dyhydroxy-5,5'-bistetrazole dihydroxylamine coating method, and belongs to the field of an energy-containing material. Nitroguanidine and macromolecules are matched to be used; the optimum coating on the TKX-50 is realized through process creation; the coating problem of TKX-50 explosive is effectively solved; the preparation process is simple; the operation is easy; no complicated production devices are needed; no high-temperature pressure device is used in the preparation process; the process conditions can be easily realized; used solvents and glue liquid can be repeatedly recovered and utilized; the environment-friendly requirements are met; the operation is safe and reliable; the industrial production can be realized.