202results about How to "Avoid serious accidents" patented technology

The invention relates to a speed safety factor-based method for determining a road limited speed value, which comprises the following steps: collecting basic data, namely design parameters of plane and vertical lines of a road; in three dimensionalities of an axial direction, a horizontal direction and a longitudinal direction, calculating the highest running speed of the road; selecting a proper speed safety factor for each dimensionality; dividing the highest running speeds in the three dimensionalities by the speed safety factors to obtain optical limited speeds of the three dimensionalities, and selecting the minimal value of the three limited speed values as an upper limit of a limited speed aggregate to obtain an initially determined limited speed value; and preferring a limited speed according to the expected speed of a driver. The limited speed value determined by the method reflects the quality of a driving condition, a safety space is reserved, and the driver is easy to observe the limited speed value.

The invention relates to a sector segment actuating mechanism taking pressure as a control target, belonging to the technical field of continuous casting equipment in a metallurgy industry. The sector segment actuating mechanism comprises a displacement sensor, a hydraulic cylinder, a pressure sensor, an electric control system, a hydraulic system and a sector segment, wherein the hydraulic cylinder of the sector segment is provided with the displacement sensor and the pressure sensor which are matched with the hydraulic cylinder; the signal output ends of the displacement sensor and the pressure sensor are connected with the electric control system; the output of the electric control system is connected with the hydraulic system; and the hydraulic system is connected with the hydraulic cylinder of the sector segment. The sector segment can reflect the stress of a casting blank in real time by taking the pressure as the control target, solve the problems of errors caused by sensor drifting and initial roll gap setting, prevent the casting blank from internally cracking and the sector segment from being damaged due to overload because of superabundant shrinkage mass and also ensure good casting blank quality through the force analysis of the casting blank. Besides, the method can also be used for judging the position of a liquid core of the casting blank and providing accurate feedback data for the application of a dynamic soft reduction technology.

The invention discloses a conveyer belt deviation detecting method based on image identification. The method includes the steps that real-time images are collected, and gray level images are obtained; edges of all objects in the gray level images are detected through an edge detector; edge images are filtered through a filtering template based on the shape and the directivity, and linear type edge images in the direction the same with the conveyor belt running direction are obtained; the continuous edges are marked through two-dimensional matrixes; conveyer belt real-time edges in the real-time images are identified according to known conveyer belt standard edges obtained when a conveyer belt does not deviate; and the deviation distance and the deviation degree of the real-time edges are determined. According to the conveyer belt deviation detecting method, edge detection is carried out on the real-time images collected by video equipment, matching identification is carried out on the detected edges and the standard conveyer belt edges through the image identification technology, the edges of the conveyer belt are determined, and therefore the reliability and the promptness of conveyer belt deviation detection are improved.

The invention belongs to the technical field of power transformer fault diagnosis, and discloses a power transformer fault diagnosis method and a power transformer fault diagnosis device. The power transformer fault diagnosis device comprises: a voltage detection module, a temperature detection module, a main control module, a fault detection module, a signal processing module, a data transmissionmodule, a data analysis module, a fault identification module, a fault early warning module, a fault data storage module and a display module. More related operation data are added through the faultidentification module, a classifier is reasonably trained according to the influence weight of data on fault identification, related training data can be input according to requirements to adjust parameters and precision of the classifier, and finally the effect of reasonably identifying transformer faults is achieved. And the data analysis module is more targeted, so that the electric power department can effectively manage a distribution transformer according to the transformer data analysis report, and the level of managing the distribution transformer is improved.

The invention provide a three-limit time-base circuit composed of analogue integrated circuit operational amplifier A (or voltage comparator B), few separate electronic elements by using new principleand ingenious connection mode. The three-limit time-base circuit has top and bottom limit main control functions completely compatible to all functions of classic 555 time-base circuit can be used asultra-top and bottom limit control circuit and astable, monostable and bistable circuit. The invention increases exceed bottom limit protection and control function, when inputted sensing circuit hasfault, fault display and protection control can be executed in time to prevent the main control circuit from being out of control. The invention, used in control circuits for temperature, pressure, water level etc., may improve security, and prevent severe accidents (such as fire hazard). So, the invention has wide use in electronic application field such as household electrical appliances, simple controllers, and high cost performance of products are provided.

The invention discloses a power distribution cabinet for a humid and dusty outdoor environment. The power distribution cabinet comprises a cabinet body, wherein a water tank is arranged at the bottom part of the cabinet body, is connected to a cold water main pipe through a water inlet pipe and is connected to a return water main pipe through a water outlet pipe; a serpentine cooling pipe is arranged in the water tank; an outlet end of the serpentine cooling pipe communicates with the cabinet body; a processing tank is arranged at the top end of the cabinet body; a cooling fan, a dust removal device and a drying device which are sequentially connected through a pipeline are arranged in the processing tank; an inlet end of the cooling fan communicates with the cabinet body; an outlet end of the drying device is connected to the inlet end of the serpentine cooling pipe; a controller is also arranged in the processing tank; a temperature sensor is arranged in the cabinet body; the temperature sensor and the cooling fan both are electrically connected with the controller; a humidity sensor is also arranged in the cabinet body; and the humidity sensor and the drying device both are electrically connected with the controller. The power distribution cabinet can normally work in the humid and dusty outdoor environment; and the application range is wide.

The invention discloses a pumpkin jelly and a preparation method thereof. Raw materials for the pumpkin jelly comprise, by weight, 900 to 1000 parts of purified water, 20 to 40 parts of gelatin, 10 to 20 parts of agar, 40 to 55 parts of honey, 13 to 18 parts of cane sugar, 6 to 8 parts of green tea, 5 to 6 parts of mustard, 5 to 6 parts of heartleaf houttuynia herb, 5 to 6 parts of purslane herb, 3 to 5 parts of grape seeds, 3 to 5 parts of pumpkin seeds, 8 to 10 parts of carrot, 8 to 10 parts of brassica chinensis, 8 to 10 parts of apples, 10 to 12 parts of fried black soya bean, 10 to 12 parts of pumpkin, 1 to 2 parts of lycium barbarum polysaccharide and a proper amount of food coloring and potassium sorbate. According to the invention, gelatin and agar are mixed and used a gelatinizing agent, so pumpkin jelly not only contains collagen components but also has a softer and more delicious taste, is wet and slippery in mouth and dissolves as one chews, which enables the severe accident of choking because of swallowing to be completely prevented. The pumpkin jelly provided by the invention not only tastes like traditional jellies, but also can enhance health of human beings and promote growth of children and produces no side-effects when eaten for a long time.

The invention discloses an air conditioner with a refrigerant leakage display function. The air conditioner comprises an electric control device and a display device, wherein the electric control device is provided with a detection module, the detection module is provided with a detection component for detecting the operation state of the air conditioner, and the display device is provided with a refrigerant display component for displaying the quantity of remaining refrigerants or leaked refrigerants of the air conditioner. The invention further discloses a display control method of the air conditioner. By means of the technical scheme, the quantity of the remaining refrigerants or the leaked refrigerants of the air conditioner can be displayed in real time, a user can know whether the refrigerants of the air conditioner are leaked according to the display condition, and accordingly faults of the air conditioner caused by leaking of the refrigerants can be prevented in time; more serious accidents are avoided later, and the complaint rate of the user can be effectively reduced.

The invention discloses a glass insulator used for encapsulation connection between the metal end cover and the metal conductive columns of the wiring terminal of a compressor. The glass insulator comprises the components with the weight percentage as follows: 92-94 percent of SiO2, 3-4 percent of Al2O3, 0.5-1 percent of Bi2O3, 0.5-1 percent of TiO2 and 1.5-2.5 percent of SrO, preferably, 93 percent of SiO2, 33.3 percent of Al2O3, 0.7 percent of Bi2O3, 0.8 percent of TiO2 and 2.2 percent of SrO. The glass insulator not only has favorable insulating performance and avoids flashover generated during operation, but also has low probability of generation of crackle under the long-term action of the alternating current of the metal columns, therefore an explosion hazard of the compressor is avoided, and the glass insulator is suitable for widely applied in the wiring terminal of the compressor.

The invention discloses a polytetrafluoroethylene composite diaphragm for a lithium ion battery. It includes a diaphragm, the diaphragm is formed by the upper polypropylene microporous membrane and the lower polypropylene microporous membrane or the upper polyethylene microporous membrane and the lower polyethylene microporous membrane, characterized in that the upper polypropylene microporous membrane A polytetrafluoroethylene microporous membrane is arranged between the porous membrane and the lower polypropylene microporous membrane or between the upper polyethylene microporous membrane and the lower polyethylene microporous membrane. The polytetrafluoroethylene composite diaphragm for lithium ion battery of the present invention not only has the low closed cell temperature of the lithium ion battery diaphragm, but also has the performance of high membrane rupture temperature, and effectively guarantees the safety and reliability of the lithium ion battery during use sex. The polytetrafluoroethylene composite separator for the lithium ion battery of the present invention can be used as a separator between the positive electrode and the negative electrode of the lithium ion battery.

The invention relates to an online detection system and an online detection method for an isolating switch. The system comprises a motor operating mechanism, the isolating switch and an online detection device, wherein the motor operating mechanism comprises a motor; the online detection device comprises a detection module, a conversion module, a switch and a centralized control terminal; the detection module is used for acquiring detection analog signals of the motor operating mechanism and the isolating switch; the detection analog signals comprise a temperature analog signal, a displacement analog signal and a switching value analog signal of the isolating switch and a current analog signal of the motor; the conversion module is used for finally converting the detection analog signals into detection optical signals and transmitting the detection optical signals to the centralized control terminal; and the centralized control terminal carries out centralized control on the received detection optical signals. The system and the method of the invention meet the intelligent power grid construction requirements by the state grid, and the safety, the reliability and the anti-interference performance are good.

The invention provides a method for high-gas coal seam working surface drilling and exploitation gas pre-drainage and belongs to coal seam drilling and exploitation gas pre-drainage methods. An ultra-thin coal seam is first drilled and exploited for pressure relief and permeability enhancement in coal seams; spiral drilling machines are arranged on a headentry and a tailentry of a first mining working surface to drill and exploit the current working surface and the next working surface; drilling and exploitation excavation makes rock strata around drilling and exploitation holes get loose and causes fracture development; under the protection of casing pipes, with drainage pipes, gaps between the drilling and exploitation holes and the drainage pipes are filled with high water content filling materials, so that drilling and exploitation and drainage concentric holes are formed; after the arrangement of all concentric holes of the headentry and the tailentry of the working surface is complete, drilling and exploitation gas pre-drainage can be carried out. Drilling and exploiting the ultrathin coal seam causes stress concentration around openings of the drilling and exploitation holes and plastic deformation of surrounding rocks, so that fracture development is caused and the adsorption capacity of coal seam gas decreases; through theoretical calculation, it is obtained that the gas dilution effective radius is 5 times the radius of the drilling and exploitation holes. The mining method for first mining high-gas coal seams is reliable, is simple in process, and guarantees the safe mining of first-mining high-gas coal seams.

The invention relates to a large-span metal roof panel performance degradation assessment method and device. The method comprises the steps of obtaining the long-term sensor monitoring data representing the state of a metal roof panel; preprocessing the monitoring data; extracting a trend signal, a periodic signal and a noise signal of the preprocessed monitoring data according to a preset algorithm; generating a performance evaluation index representing the metal roof panel, wherein the performance evaluation indexes comprise plastic deformation and fatigue damage performance evaluation indexes; inputting the plastic deformation and fatigue damage performance evaluation indexes into a performance degradation evaluation model; and using the performance degradation evaluation model to output an estimated damage degree. According to the method, the collected monitoring number time sequence historical data are analyzed, the degradation trend of the metal roof panel is mastered according to the performance degradation evaluation model, and the method can be used for guiding maintenance personnel to perform on-condition maintenance and is easy to implement in practical engineering, so that the serious accidents are avoided.