56results about How to "Meet the requirements of detection accuracy" patented technology

The invention discloses a method for generating an object detection model, and the method comprises the steps: obtaining a training image containing annotation data, and enabling the annotation data to be the position and category of a target object in the training image; inputting the training image into a pre-trained object detection model for processing, the object detection model comprising afeature extraction module, a fusion module and a prediction module which are mutually coupled, the feature extraction module being suitable for performing convolution processing on the training imageto generate at least one initial feature map; the fusion module is suitable for performing up-sampling processing on the initial feature map to obtain a feature map after feature fusion; the prediction module is suitable for predicting the category and the position of the target object from the feature map; and on the basis of the annotation data and the predicted object category and position, training a pre-trained object detection model to obtain a trained object detection model as a generated object detection model.

The invention discloses a method for generating an object detection model, and the method comprises the steps: obtaining a training image containing annotation data, and enabling the annotation data to be the position and category of a target object in the training image; inputting the training image into a pre-trained object detection model for processing, with the object detection model comprising a feature extraction module and a prediction module which are coupled to each other, the feature extraction module comprising a deep residual network unit and a convolution processing unit and being suitable for performing convolution processing on the training image to generate at least one feature map; enabling the prediction module to be suitable for predicting the category and the positionof the target object from the at least one feature map; and on the basis of the annotation data and the predicted object category and position, training a pre-trained object detection model to obtaina trained object detection model as a generated object detection model.

The invention discloses a calibrating device of an automobile pedal force and travel detector in the field of automobile industry, and aims to solve the problem that the automobile pedal force and travel detector cannot be calibrated. A system comprises a pedestal (1), a stayguy sensor (2), a supporting platform (3), a fixed sleeve (4), a force sensor (5), a guide post (7), a sliding sleeve (8) and a lead screw (9). The calibrating system can calibrate numerical values of pedal force and pedal travel of an automobile measured by the automobile pedal force and travel detector.

The invention discloses a method for detecting defects inside glass. The method comprises the following steps: in a dark environment, irradiating the side surface of glass to be detected by using a linearly-structured light source, wherein the defects inside the glass such as impurities and cracks can scatter a part of light, shooting from the front surface of the glass to be detected by using a high-resolution CCD (charge coupled device) camera, recording a series of images with defect information, moving the glass to a next position, shooting again, and finally obtaining defect images of all irradiated positions of the side surface of the glass to be detected. The visual field of the high-resolution CCD camera is limited, so that firstly, images in a certain layer are two-dimensionally stitched to obtain the defect images of the layer, secondly, two-dimensional coordinates and the layer number of the defects are recorded, and finally, the defect images of all layers are three-dimensionally reconstructed to obtain three-dimensional images of the defects inside the whole glass. The detection method is simple and high in detection accuracy, can accurately detect positions of the defects inside the glass such as the impurities and the cracks.

The invention provides an acoustic detection based status detection method of a server fan. The detection method comprises the following steps of: 1) placing a microphone in a machine box of a server, and collecting an audio signal near the fan in the machine box of the server to be detected when the fan is operating; 2) carrying out sampling on a fan sound signal input by the microphone and carrying out spectrum analysis, namely, expanding signals sent from a signal source according to a frequency sequence, editing the signals to a frequency function, and analyzing signal amplitudes on major frequency points; 3) deducing whether the fan is in the abnormal working state when the signal amplitudes of some major frequency points are not matched with the signal amplitudes in the normal state; 4) placing the microphone in the machine box of the server, wherein the fixed position of the microphone needs to be close to the fan as much as possible; and if multiple fans are arranged in the server, multiple microphones are correspondingly needed to coordinate the detection and sampling.

The invention provides a method and device for detecting an initial position angle of an electro-excitation synchronous machine rotor, belonging to a control method and device of a motor. A three-phase power supply in the device is connected with an electro-excitation synchronous machine by a three-phase voltage source inverter; a voltage transducer is connected with a power line between the three-phase voltage source inverter and the electro-excitation synchronous machine; the voltage transducer is connected with an input end of a DSP (digital signal processor) control system; an output end of the DSP control system is connected with a PC (personal computer); a DC (direct current) power supply is connected with a rotor exciting winding of the electro-excitation synchronous machine by an H-bridge inverter; a current transducer is connected with a power line between the H-bridge inverter and the rotor exciting winding of the electro-excitation synchronous machine; and IGBT (insulated gate bipolar translator) drive signals are connected with the H-bridge inverter. According to the invention, the structure is simple and reliable, the realization is easy, the anti-interference performance is strong, the detection accuracy is high, the additional hardware overhead is not required, and the detection result of the initial position angle of the rotor can be acquired.

The invention discloses a method for generating an object detection model, and the method comprises the steps: obtaining a training image containing annotation data, and enabling the annotation data to be the position and category of a target object in the training image; inputting the training image into a pre-trained object detection model for processing, with the object detection model comprising a feature extraction module and a prediction module which are coupled to each other, the feature extraction module being suitable for performing convolution processing on the training image to generate at least one initial feature map; enabling the prediction module to be suitable for predicting the category and the position of the target object from the at least one feature map; and on the basis of the annotation data and the predicted object category and position, training a pre-trained object detection model to obtain a trained object detection model as a generated object detection model.

The invention relates to a device for rapidly and nondestructively detecting the component content of yellow rice wine. The existing detection method has the disadvantages of large time consumption, complication in operation and damage to a sample. In the device provided by the invention, after the light emitted by a light source is collimated through a lens, a modulating disk is aligned to the collimated parallel light, thereby carrying out the light intensity modulation; the collimated parallel light is split by a spectrometer which comprises an interference filter, a filter wheel and a stepper motor; the monochromatic light with the bandwidth of 10-20nm is emitted into an immersion optical fiber probe and then emitted to a detector; after the weak photoelectric signals output by the detector are amplified by an instrument amplifier and processed through a low pass filter, and the weak photoelectric signals are converted into digital signals by a converter; and the digital signals are transmitted to a digital signal processor. The device provided by the invention can be used for carrying out the nondestructive detection on conventional detection items such as the alcohol, sugar and acidity and the like in the yellow rice wine, is rapider and more friendly-environment than the conventional yellow rice wine component physicochemical check, does not need to preprocess the sample and has the advantages of good detection result repeatability and low detection cost.

The invention discloses a device for dynamically detecting shape-position parameters of an elevator guide rail. The device comprises a detector, and a mechanical fixed support for positioning the detector on the elevator guide rail; the hardware of the detector includes a laser, a 2D position sensitive device, a PSD signal amplifying conversion circuit, an A / D conversion module, a hall ranging sensor, an ARM9 chip, an LCD and a PC; the mechanical fixed support comprises an adjustable longitudinal supporting arm which is connected to an upper cross beam of a car; an adjustable horizontal supporting arm is connected to the upper end of the adjustable longitudinal supporting arm and is connected with a guide rail detector chassis for positioning the detector through a slide rail and slid shoots fixed on the side surface of the guide rail; a U-shaped guide rail detector chassis clamping arm is connected to the periphery of the guide rail detector chassis; two guide rail side surface clamping rollers which are respectively positioned on two side surfaces of the elevator guide rail are arranged at the front side of the guide rail detector chassis clamping arm. The device is simple in mechanical arm, firm, reliable, clear and simple in connection relationship of a detector circuit, and effectively meets the requirement on detection precision.

The invention relates to optical aspheric detecting devices, and provides an aspheric detector, particularly an aspheric detector with higher measuring accuracy, which is obtained by combining the advantages and disadvantages of contact and non-contact measurement, integrating the contact and non-contact measurement as a whole to measure aspheric surfaces and mutually compensating for the two methods of measurement. The aspheric detector comprises a structure rack, a detecting platform, a non-contact laser displacement probe, a grating contact displacement probe, an XYZ three-axis motion mechanism and a control device, wherein, the non-contact laser displacement probe and the grating contact displacement probe are mounted on the Z axis of the XYZ three-axis motion mechanism; the detecting platform is arranged on the X axis motion mechanism; an X-axis motor, a Y-axis motor and a Z-axis motor are mounted on the XYZ three-axis motion mechanism respectively; and the XYZ three-axis motion mechanism is driven by the X axis motor, the Y axis motor and the Z axis motor, thereby realizing the movement of the non-contact laser displacement probe and the grating contact displacement probe, and realizing the three-dimensional measurement of an aspheric surface optical element.

The invention discloses a small-diameter deep hole coaxiality detection method. According to the method, one end of a deep hole is provided with target coordinate acquisition equipment, the deep hole is provided with a detection device, the detection device is provided with multiple targets, the detection device is pushed to different depths in the deep hole to stop, coordinate values of the targets at the stop positions of the detection device are acquired by the target coordinate acquisition equipment, a center of circle coordinate value of the deep hole is measured, through center of circle coordinate values of different depth stop positions at the deep hole, a change value of an axial line of the deep hole in a radial direction is measured, a deep hole diameter change value is measured through the target coordinate values at the different depth stop positions. A shooting measurement camera is employed by the target coordinate acquisition equipment, faces of the targets detected by the shooting measurement camera are arranged on one plane, namely the target plane, after the detection device stops at the different depth positions in the deep hole, the target plane and the axial line of the deep hole are automatically perpendicularly to each other.

The invention provides an SFF-8485 agreement fault-tolerant analyzing method based on sequence flow detecting. The method comprises the following steps of: 1) redefining the starting sign of agreement analysis, namely continuously generating the low level of four clock periods on an SLOAD signal line, in the next adjacent clock period, and the level of the SLOAD signal line being changed to high level, and namely the SLOAD having rising edge step change; on the SLOAD signal line, under the match of a clock signal, detecting the set sequence flow '00001' of the starting sign of agreement analysis, namely continuous four low levels and one high level; 2) when no sequence flow of the starting sign of agreement analysis is detected, not responding to any change of an SDATA signal line; and when the set sequence flow '00001' of the starting sign of agreement analysis is detected, starting the analysis for the state data of a hard disk, temporarily storing the analyzed state data of the hard disk, and meanwhile continuously detecting the sequence flow '00001' of the starting sign of agreement analysis.

The invention discloses an optical detection system, a biochemical analyzer, a light beam orienting component and a light beam adjusting method of the optical detection system and the biochemical analyzer. The optical detection system comprises a light source, a light beam collecting component, a detected sample placing position and the light beam orienting component, wherein the light beam orienting component comprises a support and a light beam adjusting part, the light beam orienting component is provided with an incident surface and a light emitting surface which are respectively opposite to the light source and the light beam collecting component, the light beam adjusting part is fixed on the support, and an adjustable clearance and / or adjustable angle is formed between the light beam adjusting part and the support; and the detected sample placing position is located between the light beam orienting component and the light beam collecting component or located at one sides of the light beam orienting component and the light beam collecting component. In the invention, the optical axis of the light beam adjusting part can generate parallel excursion for a certain distance or deflection for a certain angle relative to the principal optical axis of an optical system, so that a light beam emitted by the light beam adjusting part is propagated along a reasonable direction to meet the working requirement of the optical system.

The invention discloses a method and device for locating the leakage position of an HDPE membrane through a stress wave. The method comprises the steps: employing a plurality of vibration detectors, laid under the HDPE membrane, for monitoring a stress wave generated during the cracking of the HDPE membrane, converting a received mechanical signal into an electric signal, and recording the arrivaltime of the stress wave; carrying out the modulation amplification and noise filtering of the electric signal through the signal conditioning circuit; transmitting the conditioned electric signal toa main control chip of a data collector for storage after the analog-digital conversion of the conditioned electric signal through an A / D conversion circuit; extracting the information in the data collector through a data processing terminal, carrying out the analysis of the information, so as to judge the generation moment of a new focus and obtain the coordinates of the cracking position of theHDPE membrane. According to the invention, the method can solve a problem of first pollution second discovery in a conventional method, and remarkably improves the resolution of a positioning model.

The invention discloses a six-post type three-dimensional visual detection system for automobile wheel alignment parameters, which aims to overcome the problem that the existing detection system adopts a high precision straight-line guide rail, is complex in structure, high in manufacturing cost and not suitable for wide range popularization, and cannot be adjusted to an asymmetric measurement system. The system comprises a front right plane mirror rapid clamping locating device (A), a front left plane mirror rapid clamping locating device (B), a rear right plane mirror rapid clamping locating device (C), a rear left plane mirror rapid clamping locating device (D), a left position adjustable camera mounting system (F) and a right position adjustable camera mounting system (E). The detection system disclosed by the invention can complete accurate measurement of the wheel alignment parameters during the detection process.

The invention discloses a method for detecting the chamfer depth and angle of a valve seat hole. The method comprises the following steps: firstly, setting a standard cone which can be adapted to thechamfer of the standard valve seat hole, and forming an upper limit detection plane and a lower limit detection plane at the top end of the standard cone; secondly, coating the cone surface of the standard cone with a layer of dye; thirdly, inserting the standard cone into the valve seat hole to detect whether the vertex of the chamfer of the valve seat hole is between the upper limit detection plane and the lower limit detection plane or not; and finally, rotating the standard cone to detect whether the dye area of a chamfer cone on the standard cone meets the requirements or not. The invention also provides a test tool for detecting the chamfer depth and angle of the valve seat hole. The detection method and test tool for detecting the chamfer depth and angle of the valve seat hole havethe advantages of rapid detection of depths and angles, integral detection of depths and angles, high specificity, convenience in operation, accurate and clear detection results and high detection accuracy.

The invention discloses a clamping device for a renewable automotive accumulator in the field of renewable resource utilization of automobiles, aiming at solving the problems that the renewable automotive accumulator cannot be quickly and reliably clamped in a transporting process. The system comprises a handle (1), a pull rod (2), a steel wire rope (3), a clamp block (4), a spring (5) and a rotating shaft (6). The detection system can complete quick and reliable clamping and transportation on the renewable automotive accumulator.

The invention discloses a quick calibrating apparatus for a turning disc of an automobile wheel positioning instrument, aiming at solving the problem that the turning disc of the automobile wheel positioning instrument can not be rapidly and accurately calibrated. The quick calibrating apparatus for the turning disc of the automobile wheel positioning instrument comprises a compression bar (1), asleeve (2), a base (3), a pressure spring (4), a stud (5) provided with a hole, a support seat (6), a bearing seat (7), a rotating shaft (8), a pressure plate (9), an elastic rubber pad (10), an encoder (11), a locating bolt (12), a bearing end cover (13) and a bearing (14). The quick calibrating apparatus can be used for completing the quick calibration for turning disc of the automobile wheel positioning instrument.

The invention discloses a three-dimensional visual inspection system with small size and large base line distance for an automobile wheel positioning parameter, which belongs to the field of automobile industry and is used for solving the problem that small structural size and high-accuracy measurement cannot be realized by a visual measuring system of a wheel positioning parameter machine. The system comprises a base (1), a right video camera (2), a right front plane mirror component (3), a right rear plane mirror component (4), a top cover (5), a bulb (6), a left video camera (7), a left rear plane mirror component (8), a left front plane mirror component (9), a mirror holder base (10), a plane mirror (11), a mirror holder top seat (12), an adjusting nut (13), a positioning knob (14) and an upright post (15). By adopting the inspection system, non-contact automatic inspection of the automobile wheel positioning parameter can be completed.

The invention discloses a three-freedom degree wheel positioning instrument target in the field of car industries, which aims to solve the problem that the traditional target can not carry out position adjustment and has lower precision. The device comprises a target plate (1), target plate support angle iron (2), a target shaft connecting frame (3), a fan-shaped frame (4), a connecting fork (5), a connecting pipe (6), a connecting shaft (7) and a rotating shaft (8), wherein one end of the connecting shaft (7) is rotatably matched and connected with an inner hole of the connecting pipe (6); the connecting pipe (6) is welded with the bottom of the connecting fork (5); the rotating shaft (8) penetrates through the connecting fork (5) and a through hole at the circle center position of a cambered groove of the fan-shaped frame (4) and extends out of the end part of the through hole and is threaded by a butterfly nut; the top surface of the target shaft connecting frame (3) is fixedly connected with a bottom bolt of the fan-shaped frame (4); two target plate support angle irons (2) are welded in the target plate (1), and the target shaft connecting frame (3) is fixedly connected with bolts of the target plate support angle iron (2).

The invention relates to the technical field of bogie pipeline installation and specifically relates to a bogie pipeline positioning detection device and positioning and detection methods. The device comprises a base. Scales are formed in the length direction from one end to the other end of the upper surface of the base. The base is provided with a positioning mechanism, a measuring mechanism and an assembling mechanism. The assembling mechanism is fixedly connected with the base. The assembling mechanism connects the base with a bogie. The positioning mechanism and the base are movably connected. The positioning mechanism is capable of moving in the length direction of the base and is fixed on a position needing positioning. The measuring mechanism and the base are movably connected. The measuring mechanism is capable of moving in the length direction of the base. The positioning and detection methods are respectively carried out by the bogie pipeline positioning detection device. The bogie pipeline positioning detection device and the positioning and detection methods provided by the invention have the advantages that the structure of the device is simple, the operation method is convenient, and detection and positioning functions are simultaneously realized.

The invention discloses a credit fraud detection method and system, and relates to the field of credit. The method comprises the steps of obtaining credit sample data, dividing the credit sample datainto a training set and a test set, training a feature data window and a logistic regression model by using the training set to obtain a credit fraud detection initial model, debugging the credit fraud detection initial model by using the test set to obtain a credit fraud detection model, obtaining credit data to be tested, inputting the credit data to be detected into the credit fraud detection model to obtain a logistic regression classification result, and performing decision fusion on the logistic regression classification result to obtain a credit fraud detection result. According to thecredit fraud detection method and system, feature scanning and logistic regression are combined, feature scanning and logistic regression are performed on the to-be-detected credit data, and finally decision fusion is performed, so that the accuracy of credit fraud detection is improved, the credit fraud detection model is simple in structure, and the training speed and the classification speed are improved.

The invention provides bored pile bore hole inspection equipment. The bored pile bore hole inspection equipment comprises an equipment body (1), multiple distance sensors (2), a direction detection device (3) and a data processing module (4), wherein the distance sensors are equidistantly arranged on the outer side wall of the equipment body (1), and are used for detecting multiple distances between the outer side wall of the bore hole inspection equipment and the inner side wall of a drilling duct in real time in the process of putting the bore hole inspection equipment into the drilling ductto obtain multiple pieces of distance information, the direction detection device (3) is arranged at the equipment body (1) and is used for obtaining direction information of the bore hole inspectionequipment in real time in the process of putting the bore hole inspection equipment into the drilling duct, and the data processing module (4) is arranged at the equipment body (1) and is electrically connected with the distance sensors (2) and the direction detection device (3), and is used for obtaining the direction information and the distance information, correcting the distance informationbased on the direction information to generate multiple pieces of corrected distance information, and generating duct three-dimension information based on the direction information and the corrected distance information.

The invention discloses a level height difference correction system for a four-wheel aligner lifting frame of a standard-type automobile, and aims to overcome the defect that the level height difference of a contact point of the automobile four-wheel aligner lifting frame and wheels fails to be tested and corrected rapidly and accurately. The level height difference correction system comprises a balance level (1), a marker post (2) and a base (3), and can complete rapid test of the level height difference correction for the four-wheel aligner lifting frame of the automobile.

The invention discloses a monitoring device of neutral gear sliding for a commercial vehicle, aiming at overcoming the problem that whether the vehicle is at neutral gear sliding can not be monitored in real time. The system comprises a proximity switch mounting frame (2), a proximity switch (3) and a clamping frame (4). The accurate real-time monitoring for the neutral gear sliding state when the vehicle operates can be completed by the monitoring system, and traffic accidents caused by neutral sliding can be avoided effectively.

The invention discloses a straightness and twist angle detection method for a turnout of a high-speed railway and a detection device thereof. The detection method comprises the following steps: first,emitting line structured light covering detection parts to a rail top and a rail waist of the high-speed railway, separately, and scanning the contours of the rail top and the rail waist of the turnout of the high-speed railway; generating planar contour data of the turnout of the high-speed railway; defining a detection coordinate system of the rail top and the rail waist of the turnout of the high-speed railway, and recording coordinates of the scanned contour points in real time in the detection coordinate system; calculating the planar jump values of the rail top coordinates and the railwaist coordinates of the scanned contour points in real time to acquire the straightness and the twist angle of the turnout of the high-speed railway; judging whether the planar jump values exceed a preset precision or not; and conveying the turnout of the high-speed railway to a to-be-processed area to be repaired when the planar jump values exceed the preset precision. The detection device disclosed by the invention is high in adaptability and efficiency. The detection device is not manually operated once being mounted, so that the workload of a worker can be reduced, and meanwhile, the detection device can detect automatically, is high in detection speed and high in measuring precision.

The invention provides an immune quantitative detection device for a marker to be detected, which is characterized by comprising a mobile phase containing device (2), a filter (1), a detection phase containing device (3) and a detector (4), wherein the mobile phase containing device (2) is connected with the filter (1) through a pipeline (8); the filter (1) comprises an inlet (5), a filter element(6) and an outlet (7); the detection phase containing device (3) is connected with the detector (4) through a pipeline (9); and the filter element (6) is made of a substance which can be coupled by using a specific conjugate of a marker to be detected. The invention further provides an immune quantitative detection method and an immune quantitative detection amplification method of the marker tobe detected and related application. According to the invention, the individual controllable degree of immune quantitative detection is improved, and the detection efficiency is improved.

The invention discloses a biosensor. The biosensor includes a sensor body, wherein the sensor body includes a plurality of physical surfaces, each physical surface is provided with at least one functional electrode, and the physical surface further includes a non-sensing area; and the non-sensing area of at least one of the physical surface is further provided with the other functional electrode,each of the functional electrodes is provided with a corresponding signal conducting area, and each of the functional electrodes is connected with the corresponding signal conducting area. According to the biosensor, since the multiple functional electrodes are distributed on the multiple physical surfaces of the sensor, the length of the sensor can be shortened effectively through the design on the premise of the same sensing area of the sensor; and when the biosensor is compared with a sensor with electrodes which are arranged on one side of the sensor, the length can be shortened by 50% through the design under ideal conditions, and meanwhile the test precision of the sensor can be improved further, so that the problem of contradiction between the test precision and wearing experience of an existing sensor is solved.