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63results about How to "Convenient and accurate judgment" patented technology

Base station coverage and basic data inspection method and device

The invention discloses a base station coverage and basic data inspection method and device. The method comprises the steps that an adjacent cell level switching report of a serving cell is collected, and a target cell with the maximum switching value is screened out; cell engineering parameter lists of the serving cell and the target cell are colleted; the interstation distance between the serving cell and the target cell is calculated according to the geographic position information of the serving cell and the geographic position information of the target cell, and the position relevance between the serving cell and the target cell is determined based on the interstation distance; the coverage relevance of the serving cell and the target cell is calculated according to the geographic position information and the coverage performance parameters of the serving cell and the geographic position information and the coverage performance parameters of the target cell; if the position relevance or the coverage relevance is zero, it is determined that actual configuration data of a first base station or/and a second base station are not matched with preset configuration data. The abnormal base station can be accurately positioned in time, the fault base station can be examined on the spot in a targeted mode, the inspection of regional and even the whole network base station coverage and basic data is achieved, the inspection difficulty and the checking workload are reduced, and the working efficiency is effectively improved.
Owner:CHINA MOBILE GROUP SHAIHAI

Key protection circuit and realization method thereof

The invention discloses a key protection circuit comprising a control chip and an inductive sensor. The inductive sensor is connected with an input terminal of the control chip; and an output terminal of the control chip is connected with a key identification circuit in a touch key system. Besides, the key protection circuit also comprises a first differential line and a second differential line, wherein the two differential lines are arranged between the inductive sensor and the input terminal of the control chip; the first differential line and the earth form a first induction capacitor; and one end of the second differential line and the earth form a second induction capacitor, wherein the one end of the second differential line approaches the inductive sensor. And according to a difference value between the first induction capacitor and the second induction capacitor, it is determined whether the output terminal of the control chip is used to output a signal to the key identification circuit in the touch key system. In addition, a realization method of the key protection circuit is provided in the invention. According to the provided key protection circuit in the invention, it can be realized that no dysfunction phenomenon occurs at a touch key when the touch key is interfered by an external electromagnetic wave or the ground level is fluctuated, thereby substantially improving convenience of user operation; and meanwhile, the system can be stable.
Owner:SHENZHEN TCL NEW-TECH CO LTD

Stability judgment method and system for feeding multiple power electronic devices into complex weak power grid

The invention relates to a stability judgment method and system for feeding multiple power electronic devices into a complex weak power grid. The method comprises the following steps: measuring data information in a complex weak power grid power system; establishing a generalized Norton aggregation circuit model according to the network topology structure and the data information of the power system, and obtaining an equivalent aggregation receiving end alternating current power grid DQ model; establishing an s-domain admittance model of the power electronic equipment according to the control structure of the power electronic equipment; calculating the ratio of the s-domain admittance of the power electronic equipment to the s-domain admittance of the equivalent aggregation receiving-end AC power grid to construct an open-loop gain; and judging whether the real part and the imaginary part of the open-loop gain meet the symbiotic forbidden zone condition at the same time to judge whether the power system is stable. Compared with the prior art, the method is used for analyzing and judging the broadband oscillation stability of a system level, does not need to carry out detailed modeling on all system elements, can simply and accurately judge whether broadband oscillation instability happens to the system or not, and avoids dimensionality disasters.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER

Toughened glass impact resistance testing device and application thereof

The invention discloses a tempered glass impact resistance testing device and application thereof, and belongs to the technical field of tempered glass testing devices.The tempered glass impact resistance testing device comprises a lofting assembly, a protection assembly is fixedly installed on one side of the upper surface of the lofting assembly, a vertical plate is welded to one side of the upper end of the protection assembly, and the upper end of the vertical plate is sleeved with a pull rope; an adsorption assembly is fixedly installed at one end of the pull rope, a steel ball is adsorbed to the lower end of the adsorption assembly, a take-up and pay-off assembly is fixedly installed at the lower end of the rear side of the vertical plate, cullet can be conveniently collected and treated through the cullet treatment assembly, and through the protection assembly, during an experiment, the experiment safety is improved, the upper frame is conveniently taken up, and the experiment efficiency is improved. Through the adsorption assembly, the steel ball can be conveniently adsorbed, through the laser lamp and the image acquisition device, accurate judgment of the height of the steel ball and acquisition of an image of a sample after an experiment are facilitated, through the take-up and pay-off assembly, the height of the steel ball can be conveniently and automatically or manually adjusted, and use is convenient.
Owner:湖南湘建智科工程技术有限公司

A detection device for a light guide strip of an automobile lamp

The invention discloses an automobile lamp light guide bar detecting device. The automobile lamp light guide bar detecting device comprises a base, a first reference piece, a first light source, a first positioning piece, a second reference piece, a second light source and a second positioning piece, wherein the first reference piece is used as a reference for detecting a left light guide bar on the outside and has specified light transmittance, curvature and length; the first light source is fixed on the base and is provided with two first light emitting ends which are respectively used for enabling the first reference piece and the left light guide bar on the outside to emit light; the intensity of light which is respectively emitted from the two first light emitting ends is consistent; the first positioning piece is fixed on the base; the second reference piece is used as a reference for detecting a right light guide bar on the outside and has specific light transmittance, curvature and length; the second light source is fixed on the base, and is provided with two second light emitting ends which are respectively used for enabling the second reference piece and the right light guide bar on the outside to emit light; the intensity of the light which respectively emitted from the two second light emitting ends is consistent; and the second positioning piece is fixed on the base. By the automobile lamp light guide bar detecting device, the light transmitting effect of the automobile lamp light guide bars can be simply and accurately determined.
Owner:GUANGZHOU XINHUI AUTOMOBILE PARTS

Three-phase synchronous partial discharge detection method

PendingCN112067955AAccurate and convenient locationAccurate and convenient attributesTesting dielectric strengthTime domainEngineering
The invention discloses a three-phase synchronous partial discharge detection method. The existing method is difficult to determine the source and the attribute of the detected discharge. According tothe method, each phase of three-phase electrical equipment is provided with a sensor, the sensors are connected to a multi-channel partial discharge detector, and the partial discharge detector adopts the same time scale to synchronously express three-phase signals; the type of a partial discharge signal is determined according to the amplitude of the discharge signal, and if the amplitudes of the discharge signals of the three-phase high-voltage oscillogram are the same at the same moment, the discharge signal is determined as an interference discharge signal; and if the amplitude of the discharge signal of one phase is greater than that of the discharge signals of the other two phases, the discharge signal with the large amplitude is a source partial discharge signal. The attribute of the partial discharge is judged according to the phase characteristics of the source partial discharge signal. According to the method, the propagation state of the partial discharge signal can be completely observed, the interference signal is cut off in the time domain according to the time scale, and the position and attribute of partial discharge can be accurately and conveniently judged.
Owner:HANGZHOU XIHU ELECTRONICS INST

Wafer detection device and method

The invention relates to the technical field of semiconductor detection, in particular to a wafer detection device and method and device, and the device comprises at least one light beam generator and a signal processing unit. The light beam generator is mounted on one side of the surface of the wafer; the method comprises the steps that at least three ranging light beams are emitted to the surface of a wafer, reflected light signals are converted into electric signals, and intersection points of the three ranging light beams and the surface of the wafer are not collinear; the signal processing unit receives the electric signal, converts the electric signal into a distance value, compares the distance value with a corresponding set interval, and determines that the wafer is in a horizontal position when the distance value is in the corresponding set interval; when at least one distance value exceeds the corresponding set interval, judging that the wafer is inclined; according to the technical scheme, whether the wafer is horizontal or not is detected, the light beam sensor is installed in a concentrated mode, leveling and alignment are not needed, and the situation that due to the inaccurate installation position of the light beam generator, the detection accuracy is poor is avoided.
Owner:北京晶亦精微科技股份有限公司
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