53results about How to "Eliminate missing detection" patented technology

The invention relates to the field of biomedical engineering and provides a method for calibrating an R wave of an electrocardiosignal. The method comprises the following steps: figuring out a difference between a front R wave position and a back R wave position which are adjacent to each other in original electrocardio data, so as to obtain an R wave interval value sequence; figuring out a forward different parameter and a backward difference parameter of the difference between the R wave positions according to the R wave interval value sequence; detecting whether the position of the R wave fails to detect or not according to the size relation of the difference between the front R wave position and the back R wave position which are adjacent to each other; supplementing the position of the R wave failing to detect; detecting whether the position of the R wave is virtually detected or not; and deleting the virtually detected position of the R wave. The invention further provides a device for calibrating the R wave of the electrocardiosignal. According to the invention, through the adoption of a relation between the originally detected R wave positions and an electrocardio data value position relation between the two R waves, leaked detection and virtual detection of the R wave are effectively eliminated.

The invention belongs to the field of aircraft digital manufacturing, and relates to an MBD-based aviation complex structural member inspection method, which comprises the following steps: step 1, acquiring three-dimensional inspection model information; step 2, planning and inspection path; and step 3, three-coordinate measurement and inspection. According to the invention, a software secondary development technology is used; a computer identification technology is adopted to replace manual inspection in the inspection process, three-dimensional labeling information and associated geometricalinformation of a part are directly detected through feature identification of a three-dimensional model by software, geometrical features to be detected and detailed geometrical information of the geometrical features to be detected are obtained, and then a measurement program is generated through detection planning to complete product inspection.

The invention relates to an automatic flexible hub bearing assembly line. The automatic flexible hub bearing assembly line is characterized by comprising inner ring conveying and measuring equipment, outer ring conveying and measuring equipment, a tray conveyor line, assembly equipment, vibration detection equipment, clearance detection equipment and grease injection detection equipment. The assembly line disclosed by the invention has the advantages that 1, an optimal flexible multifunctional combined design scheme suitable for automatic hub bearing assembly is adopted, small-batch large-scale OE production needs of multiple varieties can be met, and the international leading level is reached; 2, a mechanical and electronic integrated control system and an automatic failure detection and alarm system are adopted, the equipment operation is safe, high-efficiency and reliable, and the international leading level is reached; 3, the assembly line has the high-efficiency detection error-proofing function, the functions of automatically correcting, detecting and discharging unqualified products are realized during product assembling, and the international leading level is reached; and 4, the traditional manual operation is changed, and the persons are substituted by machines.

The invention discloses a control system for safety inspection of a vehicle bottom. The control system comprises a controller for controlling signal input and output, a scanning-imaging device for scanning the vehicle bottom, a system host for controlling the scanning-imaging device and the controller, a displayer for displaying vehicle information, a sensor for judging whether a vehicle enters or exits from a detection range, a scene camera for monitoring and videoing the whole inspection process, and a vehicle identity recognizer for recognizing the vehicle identity, wherein the controller is connected with the scanning-imaging device, the system host and the sensor respectively; the scanning-imaging device is connected with the system host; and the system host is connected with the displayer, the scene camera and the vehicle identity recognizer respectively. The control system saves electric energy, prevents illegal vehicles from sneaking into, improves safety and eliminates inspection omission; and the image resolution of a vehicle bottom image reaches up to millions even hundreds of billions pixels, so that the inspection efficiency is high and the control system meets the requirements of various inspection processes.

The invention discloses a device for automatically detecting an inserting and extracting force of a connector. The device is characterized by comprising a cabinet, an electric control cabinet, a human-computer interface, an image detection mechanism, an inserting and extracting force conduction mechanism, an industrial machinery arm and a connector clamp, wherein the cabinet is provided with a lower bracket, a table facet and a cover shell; the image detection mechanism is provided with an industrial camera; the electric control cabinet is arranged in the lower bracket of the cabinet; the human-computer interface is arranged on the outer side of the cover shell; the connector clamp and the industrial machinery arm are arranged on the table facet of the cabinet; and the image detection mechanism and the inserting and extracting force conduction mechanism are respectively arranged on the industrial machinery arm. The device provided by the invention adopts the industrial machinery arm and the connector clamp for executing, the image detection mechanism and the inserting and extracting force conduction mechanism are used for detecting, the computer is used for operating and a PLC controller is used for controlling a driver, so that the automatic detection for the inserting and extracting force of the connector is realized; the phenomena of missing detection and fault detection are avoided; the device has the advantages of human resource saving effect and detection efficiency promotion.

The invention provides an automatic visual technology-based detection system and method of a feeder terminal base plate. The detection system comprises a CCD camera, an image acquisition card, a lightsource, a sorting device and a computer, wherein the CCD camera is arranged above a base plate conveying belt and is used for acquiring an image signal of a to-be-detected base plate, the image acquisition card is used for performing AD conversion on the image signal output from the CCD camera, the light source is used for irradiating a shooting region of the CCD camera, the computer is used foranalyzing and processing a signal output from the image acquisition card, judging whether the to-be-detected base plate is qualified or not and sending a sorting operation instruction to the sorting device when the to-be-detected base plate is judged not to be qualified, and the sorting device is used for sorting the base plate which is judged not to be qualified to an unfavorable product placement region according to the sorting operation instruction. By the detection system, the defect detection efficiency and accuracy of the base plate can be improved, and the qualification rate of the product function test stage is improved.

The invention discloses a method for detecting the mask wearing condition of a target object and a thermal infrared image processor. The method comprises the following steps: acquiring a first image acquired by thermal infrared image acquisition equipment; determining a first face image area containing the face of the target object in the first image; determining upper face temperature informationand lower face temperature information of the target object according to the image information of the upper image area and the lower image area of the first face image area; and determining whether the target object wears the mask or not according to the upper face temperature information and the lower face temperature information.

The invention provides a multichannel magnetic memory detection device. The detection device comprises magnetic-sensitive probes, electric push rods and a support, wherein the fixed end of each electric push rod is fixedly arranged on the support; the electric push rods are distributed along the circumference on the support; the push rod head of each electric push rod is arranged toward the center of the circumference and is fixedly provided with one magnetic-sensitive probe; the magnetic-sensitive probes are distributed in a staggered way along the circumference, and any two adjacent magnetic-sensitive probes along the circumference are connected with each other end to end or partly overlap each other. By virtue of the multichannel magnetic memory detection device, the problems that the detection period is long, the detection efficiency is low, human and material resources are wasted and the detection of a local part is very possibly neglected once control is inappropriate, are solved. The multichannel magnetic memory detection device is used in the field of nondestructive detection equipment.

The invention discloses a key maintenance process flow method for a suspended monorail train. The method is characterized by comprising the following steps: S1, making preparation before operation ofvehicle key maintenance; S2, performing key maintenance operation on the train: demarshalling the train, continuously disassembling the train body in a warehouse, pushing a bogie out to a bogie warehouse, disassembling, disassembling and maintaining train door windows, carriage connecting devices, coupler buffers, a braking system and electrical equipment on the train body, cleaning, maintaining and debugging all components after bogies in a bogie warehouse are completely disassembled, assembling the maintained bogie, carrying out a bogie static load test to make the train body assembled, assembling the train body and the bogie, and marshalling the train in a comprehensive/key maintenance warehouse; and S3, carrying out overall debugging and acceptance work after key maintenance of the train. Aiming at the difference with trains such as subways, national railways and the like, the provided key maintenance process method is completely matched with the suspension type monorail train to ensure the safe operation of the trains.

The invention discloses a geotechnical engineering on-site detection method and device. The geotechnical engineering on-site detection device comprises a numerical reader end D and a sensor end S. The numerical reader end D is formed by a control module DP, a positioning module DGPS, a motivating module DM, a motivating antenna DMT, a communication module DC, a communication antenna DCT and a battery DPW. The sensor end S is formed by an induction antenna SMT, a power supply module SPW, a control module SP, an identification module SID, a detection module ST, a sensor SS, a communication module SC and a communication antenna SCT. The numerical reader end D adopts a wireless power supply mode to achieve power supply to the sensor end S, the sensor end S completes detection and sends detection data and sensing identification information to the numerical reader end D by means of a wireless communication mode, and the numerical reader end D records position information and stores the position information, the identification information and the detection data. The geotechnical engineering on-site detection device is high in detection efficiency, low in failure rate, capable of eliminating record errors, and long in service life.

The invention belongs to the measuring technology of aircraft engines, and relates to an improved method for measuring nozzle vent length of an aircraft engine. The method is characterized by comprising the following steps: manufacturing a probe; and measuring the vent length. The method for quick measuring the nozzle vent length of the aircraft engine eliminates the problem of missing inspection of out-of-tolerance products, reduces detection error and improves detection efficiency.

The invention discloses a wheel replacement and maintenance technological process method for a suspension type monorail train. The method is characterized by comprising the following steps: S1, performing preparation before vehicle wheel replacement operation: applying for vehicle wheel replacement and maintenance operation, and according to different power supply modes of the suspension type monorail train, adopting different power-off modes to carry out power-off and inserting a safety sign; S2, performing vehicle wheel changing operation: dismounting guide wheels, lifting a bogie and a vehicle body, dismounting a track beam or a movable track beam, dismounting wheel sets, and mounting new wheels; and S3, performing recovery and confirmation work after vehicle wheel changing work: performing vehicle power supply, information registration, safety sign removal and vehicle parking and waiting for sending. According to the invention, the characteristics of the rubber wheel set of the suspension type monorail train are combined, and the adaptive wheel replacement and maintenance technological process is provided and is different from subway vehicles and straddle type monorail trains;and the complete overhaul technological process is provided, the train overhaul requirement can be met, a foundation is provided for safe operation of a train, and the complete overhaul technologicalprocess can serve as an instructive overhaul technological scheme of wheel replacement overhaul workers.

The RF control and attendance record system for cable car in mine includes a PLC control box, coding RF card mounted in the safety helmet of miner, radio receiver in the cable car to receive RF signal within 1 m, microcomputerized substation connected to the output of the radio receiver and with control signal output connected to the PLC control box, and a mine computer with system management software and attendance record database and connected through data interface to the data signal output of the PLC control box. The present invention features the accurate information acquisition, integrated electric control and attendance record, etc.

The invention provides a device for detecting packet shortage of cigarette cartons. A pulse generating mechanism and a switch detecting mechanism are arranged on a cigarette carton conveying mechanism, the pulse generating mechanism generates continuous pulses and sends the continuous pulses to cigarette cartons, the switch detecting mechanism scans inner cigarette packets of the cigarette cartonsin the movement process of the cigarette cartons, the signals are input into a controller, and the controller performs phase operation on a rising edge signal of each pulse and a cigarette packet detecting signal. If low level exists in the cigarette packet detection signal in a pulse signal interval, packet shortage is displayed, and the cigarette cartons short of packets are removed at a removing station. The device is used for detecting the cigarette packets at the lower portion of the cigarette cartons and detecting the cigarette packets at the lower layer of the cigarette cartons passingthrough a packaging machine through the pulse generation mechanism and the switch detection mechanism. One cigarette carton is divided into a plurality of detection pulses, in a pulse signal interval, if low level exists in the signal, packet shortage is displayed, if high level exists in the signal in the pulse signal interval, there is no packet shortage, and the problem of missing detection caused by shortage of cigarette packets at the lower layer, cigarette packet spanning or cigarette packet crossing is solved.

The invention relates to manufacture and repairation of a petroleum drill rod, and particularly relates to a trimming metallographic phase detection method of the weld joint quality of petroleum drill rod inertia friction welding. According to the invention, a sand wheel is polished by PVA (polyvinyl acetate) sponge, wherein the sand wheel has the diameter of Phi200, has the rotation speed of 1,500 revolutions per minute, and has the pressure of 3-4kg/cm<2>; a sand wheel motor has the power of 0.55KW; the drill rod speed is 3 revolutions per minute; the rotation direction of the sand wheel motor is opposite to that of the polished sand wheel; water and grinding paste are added in polishing, a weld joint can achieve the finish degree the same as that of the weld joint being corroded by 5% nitric acid alcohol water solution; when the weld joint is observed by a metallographic phase microscope, if a metallographic phase trimming root part has no obvious oxide impurity and is not welded thoroughly, the welding is favorable, otherwise, the weld joint is not qualified. According to the invention, the weld joint of petroleum drill rod inertia friction welding can be subjected to rapid metallographic phase detection in the production field; not only is the detection leakage in the ultrasonic detection of defects of weld joint facet oxides eliminated, but also the technology process is simplified; the working efficiency is improved. The trimming metallographic phase detection method of the welding quality of petroleum drill rod inertia friction welding is much suitable for the petroleum production industry.

The invention discloses an intelligent robot monocular wide-angle vision theft prevention alarming method. The method comprises steps: feature points of a detection environment when a monocular wide-angle camera is in a predetermined angle state are acquired; in a condition in which the monocular wide-angle camera is kept still and is in a predetermined angle state, a picture photographed by the monocular wide-angle camera is selected as a template, the template is compared with a picture later photographed by the monocular wide-angle camera, and when the difference between an image pixel point matrix of the template and an image pixel point matrix of the picture photographed later is larger than a predetermined threshold, an abnormality processing step is started; in a rotating state of the monocular wide-angle camera, the matching ratio of the feature points of the picture photographed by the monocular wide-angle camera and the feature points acquired in a feature point acquisition step is detected, and when the matching ratio is lower than a predetermined matching threshold, an abnormality processing step is started; and according to face detection results of multiple pictures photographed by the monocular wide-angle camera after the abnormality processing step is started, abnormality alarming processing is executed.

The invention discloses an automatic test method, a system and a device for an overcurrent protector. The method comprises the following steps: inputting an analog current to the overcurrent coil of the overcurrent protector; judging whether the overcurrent protector is abnormal or not by monitoring the output voltage and/or the action condition of each overcurrent element of the overcurrent protector. According to the automatic test method, the system and the device for the overcurrent protector, an automatic monitoring of various parameters in the whole testing process is realized by simulating current driving; by inputting the analog current to an overcurrent coil pin to trigger a coil action, the operation inconvenience caused by manual test is solved, and the operation risk is eradicated, thereby effectively preventing a controller from being damaged by an overcurrent caused by ignition of the coil, effectively improving situations of the overcurrent damage of the controller, eradicating missing detection, misoperation and the like, and meanwhile, improving the testing efficiency; comparing to a manual testing, a lot more test points are added, thereby greatly optimizing the operation steps, improving the testing efficiency, and ensuring the qualified rate of the test product to be 100%.

The invention relates to a detection method for compatibility of latex paint, in particular to a detection method for compatibility of water-based color paste in the latex paint. The detection method includes the steps that the water-based color paste is added into the latex paint and uniformly stirred to prepare standard sample paint, three standard sample paint samples equal in weight are sampled at will and processed, chromatism values are obtained through card making, detection and calculation, and when all the chromatism values meet the requirement and namely are smaller than 0.5, it is judged that the compatibility of the water-based color paste in the latex paint is up to the standard. The detection method can accurately measure the compatibility of the water-based color paste in the latex paint, and the phenomena of flooding and floating of the latex paint are prevented, and use cost is saved. The detection method is easy to operate, short in time and high in accuracy and eradicates missing detection in a prior use detection method.

The invention provides an unmanned aerial vehicle cluster cooperative reconnaissance method and system under the condition of limited communication bandwidth, relates to the technical field of target reconnaissance, and can solve the problems of limited communication bandwidth, large target detection delay and low precision in unmanned aerial vehicle cluster reconnaissance. The method comprises the following steps: S1, a first unmanned aerial vehicle collects a target picture and analyzes the target picture on an airborne end to obtain target information under a stand-alone view angle and share the target information in a cluster; the collected target information is sent to the comprehensive judgment module while the pictures are continuously collected; s2, other unmanned aerial vehicles respectively judge whether cooperative investigation is carried out or not, if cooperative investigation is carried out, picture collection is carried out on a target according to the received target information, airborne end analysis is carried out, target information under respective view angles is obtained, and meanwhile the obtained target information is sent to a comprehensive judgment module; and S3, the comprehensive judgment module analyzes the received target information to obtain a final investigation result. The technical scheme provided by the invention is suitable for a target investigation process.