53results about How to "Shorten the determination time" patented technology

The invention relates to rapid judgment for the corrosion of a sodium bicarbonate water type oil well, which is applied to the corrosion treatment of a pit shaft of the oil well. A production liquid is of a sodium bicarbonate water type. When the mole ratio of Ca to HCO3- is between 0 and 1 and less than 0.6, the corrosion which is local corrosion and scale formation coexist; along with the increase of the mole ratio of the Ca to the HCO3-, the scale formation of the pit shaft is relieved, but the corrosion becomes serious; and when the mole ratio of the Ca to the HCO3- is greater than 0.6, the pit shaft of the oil well is mainly corroded. The corrosion condition of a sodium bicarbonate water type medium is fast known through the mole ratio of the Ca to the HCO3-. A corrosion inhibitor for the sodium bicarbonate water type medium is made from the following components in percentage by weight: 20 to 35 percent of carboxylate sodium imida, 20 to 35 percent of water-soluble rosinyl imidazoline, 5 to 10 percent of dodecyldimethylbenzylammonium chloride, 0 to 5 percent of aminotri-methylene phosphonic acid, 0 to 5 percent of hydroxyl ethidene diphosphonic acid, 5 to 10 percent of methanol, 2 to 5 percent of dispersant and the balanced of water. The rapid judgment and the corrosion inhibitor can improve the efficiency of corrosion inhibition.

A battery target SOC determining method and device. The method comprises the following steps: when current flows through a battery, collecting the electric quantity of each sampling point of the battery (S101); then determining the current state of the battery according to the electric quantity of each sampling point of the battery (S102); selecting a target correspondence from at least two correspondences between a specified SOC and voltages according to the current state of the battery (S103); and determining a target SOC according to the target correspondence (S104). The method can solve the problem in the art of low accuracy of target SOC which is obtained based on correspondences between a nominal SOC and voltages under a static condition.

The present invention discloses a human body position detection method. The method comprises the following steps of: when it is detected that there are signals output by pyroelectric infrared sensors,determining detection areas corresponding to the pyroelectric infrared sensors; controlling an infrared array sensor to scan the detection areas to obtain infrared images; and obtaining background infrared images, and determining a human body position according to the infrared images and the background infrared images. The present invention further discloses a human body position detection deviceand a computer readable storage medium. The infrared array sensor only needs to scan detection areas corresponding to the pyroelectric infrared sensors which output signals to allow the infrared array sensor not to perform global scanning so that a scanning time is reduced and determination time of a human body position is shortened, namely response time of a device is reduced, and therefore userexperience is improved.