30results about How to "Increase the level of influence" patented technology

The invention discloses a no-Snapback silicon controlled rectifier type ESD protection structure and a realization method thereof. The structure comprises: a semiconductor substrate (80); and an N-well (60) and a P-well (70) that are generated on the semiconductor substrate. A high-concentration P-doped layer (20) and a high-concentration N-doped layer (28) are arranged above the N-well (60). Thehigh-concentration P-doped layer (20), the N-well (60) and the P-well (70) form an equivalent PNP triode structure. A high-concentration N-doped layer (24) and a high-concentration P-doped layer (26)are arranged above the P-well (70). The N-well (60), the substrate (80) / the P-well (70) and the high-concentration N-doped layer (24) form an equivalent NPN triode structure. A high-concentration N-doped layer (22) is arranged above a boundary between the N-well (60) and the P-well (70). A portion of the N-well (60) is arranged between the high-concentration P-doped layer (20) and the high-concentration N-doped layer (28), and the distance between the high-concentration P-doped layer (20) and the high-concentration N-doped layer (28) is S. A portion of the N-well (60) is arranged between the high-concentration N-doped layer (28) and the high-concentration N-doped layer (22).

The invention provides a no-snapback silicon controlled rectifier type ESD protection structure and an implementation method thereof. The structure comprises a semiconductor substrate (80) and an N well (60) and a P well (70) produced from the semiconductor substrate; a high-concentration P-type doping (20) and a high-concentration N-type doping (28) are located on the upper portion of the N well(60); the high-concentration P-type doping (20), the N well (60) and the P well (70) form an equivalent PNP triode structure; a high-concentration N-type doping (24) and a high-concentration P-type doping (26) are located on the upper portion of the P well (70); the N well (60), the base body (80) / P well (70) and the high-concentration N-type doping (24) form an equipment NPN triode structure; a high-concentration P-type doping (22) is located above the dividing boundary of the N well (60) and the P well (70); the high-concentration P-type doping (20) is isolated from the high-concentration N-type doping (28) via a shallow trench isolation layer (10) with a width of S; a part of the N well (60) is between the high-concentration N-type doping (28) and the high-concentration P-type doping (22).

The invention discloses a water environment risk assessment method for road transport of hazardous chemicals, which adopts the influence derivation method of environmental sensitive receptors, takes environmental sensitive receptors as the evaluation basis, and is based on the impact of leakage of hazardous chemicals to be transported on environmental sensitive receptors. According to the proposed hazardous chemical transportation route, several environmental risk road sections are identified, and then the environmental risk assessment and environmental risk level classification are carried out one by one, as the final plan for the hazardous chemical transportation route Auxiliary decision-making basis. The invention also discloses a water environment risk assessment system for road transportation of hazardous chemicals. Use the environmental risk assessment module to identify environmental risk receptors, environmental risk sources and environmental risk material information around the leakage path; for the risk sources identified by the environmental risk identification sub-module, based on the environmental risk source assessment method, evaluate the environmental risk level of the risk source and assist in decision-making The module realizes the prediction and simulation of sudden environmental events.

The invention discloses a real-time rendering method based on an environment light probe. Use a group of ambient light probes to obtain lighting information, and then perform occlusion correction on this group of lighting information, and finally use the corrected lighting information to perform rendering calculations for the rendered object; the details of occlusion correction are as follows: For each environment Lighting probe, the probe is connected with multiple preset different position points on the rendered object with straight line segments; each line segment is assigned a value according to whether the line segment intersects with other objects: if the intersection is assigned a value of 0, Otherwise, it is assigned a value of 1; the ratio of the sum of the assigned values ​​of straight line segments to the total number of straight line segments is used as the occlusion influence correction coefficient, and the product of the occlusion influence correction coefficient and the illumination information obtained by the ambient light probe is the occlusion of the ambient light probe Affects the corrected lighting information. The invention also discloses a real-time rendering device based on the ambient light probe. The invention can make the rendering effect close to the actual situation.

The invention provides a semiconductor detector and a preparation method of the semiconductor detector, and relates to the technical field of detectors. The semiconductor detector comprises a semiconductor crystal, a cathode and an anode; the semiconductor crystal comprises a first face and a second face which are oppositely arranged on the two sides of the semiconductor crystal; the cathode is arranged on the first face of the semiconductor crystal; the anode is arranged on the second face of the semiconductor crystal; and the anode comprises collecting electrodes and weight gate electrodes,and the weight gate electrodes are arranged around the collecting electrodes, wherein the collecting electrodes and / or the weight gate electrodes are three-dimensional composite structure electrodes.By using the semiconductor detector, the collecting efficiency of current carriers inside the semiconductor crystal can be improved significantly.

The invention discloses a method for screening key influencing factors of PM2.5 concentration distribution based on geographic detection and PCA, which includes obtaining the location of PM2.5 monitoring stations, establishing several buffer zones; obtaining the data of influencing factors in the area to be studied and Perform discretization processing; correspond the discretized impact factor data to the PM2.5 monitoring site, and obtain the impact factor data of each PM2.5 monitoring site; use the geographic detector model for the discretized impact factor data Conduct contribution analysis and correlation analysis, etc. The invention can solve the problem in the prior art that there is no analysis method capable of comprehensively considering the relationship between each variable and the PM2.5 concentration distribution, and has strong accuracy, comprehensive analysis and wide application range.

The present invention relates to a method for making permosyn motor driven automatic escalator and automatic passenger footway implement brake stop distance. A speed-increasing flywheel is added, and a working brake can be used to meet brake stop requirement by means of its brake moment, and when an auxiliary brake is added, the action of the auxiliary brake is legged behind the action of the working brake, but when the speed exceeds the set value (less than 1.4 times of rated speed) or when the defined running direction of the step, pedal and rubber belt is changed, the auxiliary brake can promptly act.

The invention discloses a risk assessment method for a sudden drainage basin water environment of a hazardous chemical production enterprise, and the method employs an environmental sensitive receptorinfluence derivation method, takes an environmental sensitive receptor as an assessment basis, and carries out the environmental risk assessment according to the influence degree of the leakage amount of substances stored or produced in an enterprise factory on the environmental sensitive receptor. And for the region with the environmental risk, determining the environmental risk level of the region in combination with the level of the environmental sensitive receptor. And further according to the provided dangerous chemical storage planning line, taking the dangerous chemical storage planning line as an auxiliary decision-making basis for finally determining a dangerous chemical storage scheme. The invention further discloses a risk assessment system for the sudden drainage basin water environment of the hazardous chemical substance production enterprise, the risk assessment system helps the enterprise to carry out daily environment risk management, early warning, environment emergency disposal and other work, and the environment risk management level is improved. And meanwhile, the prediction simulation of an emergency environment event is realized, and the environmental emergency disposal level is improved.

The embodiment of the present application discloses a fingerprint identification method and a related device. The method includes: collecting a first fingerprint image of a user's finger through a fingerprint module; converting the first fingerprint image into a second fingerprint image, and each of the second fingerprint images pixel points are determined according to multiple pixel points in the first fingerprint image; multiple fingerprint feature sets of the user's finger are generated according to the second fingerprint image, and each fingerprint feature set includes fingerprint feature points and associated texture features of fingerprint feature points And feature point matching weights and texture matching weights, the associated texture features include description information for reflecting the outline of the pattern where the fingerprint feature points are located; fingerprint comparison operations are performed for multiple fingerprint feature sets to obtain the comparison of each fingerprint feature set Matching result; determine the fingerprint recognition result according to the comparing result of multiple fingerprint feature sets. The embodiments of the present application are beneficial to reduce the rejection rate FRR of fingerprint identification, and improve the accuracy of fingerprint identification performed by electronic devices.