41results about How to "Prevent false detection" patented technology

The invention discloses a real-time track obstacle detection method and system and a medium. The method comprises the following steps: acquiring a visual image of a track area; segmenting the visual image by using a lightweight target segmentation model to obtain a single-frame track line, an obstacle and the category of the obstacle; according to the single-frame track line, a final track area is obtained based on dynamic multi-frame track area fitting; judging whether the obstacle is in the final track area or not, and if yes, obtaining a detection frame of the obstacle in the visual image; and according to the obtained detection frame of the obstacle in the visual image, projecting the obstacle detection frame in the visual image into the radar point cloud data to obtain an obstacle point cloud range frame, and according to the obstacle point cloud range frame, calculating the distance from the obstacle to the train head. According to the invention, real-time detection and distance measurement can be carried out on the track obstacle, and the track area can be accurately determined in the image, so that whether the obstacle is in the track area or not can be judged, and a more accurate obstacle distance measurement result can be obtained.

The invention relates to the technical field of fault detection, in particular to an intelligent photovoltaic junction box testing method and system, and the method specifically comprises the steps: constructing a voltage and current dissimilarity index based on the data changes of the current and voltage of an intelligent photovoltaic junction box at adjacent moments, and constructing an electrical parameter abnormal coefficient through combining the correlation between the voltage and the environment temperature; based on the correlation between the internal temperature of the photovoltaic junction box and the time sequence of other parameters, the fault confidence coefficient of the photovoltaic junction box is constructed in combination with the electrical parameter abnormal coefficient; according to the method and the device, the anomaly detection of the photovoltaic junction box is carried out based on the fault confidence coefficient, the influence of environmental factors on related data of the photovoltaic junction box is reduced, the problem that when temperature threshold detection is carried out in an existing photovoltaic junction box detection technology, threshold setting is unreasonable, and false detection is easily caused is solved, the detection precision of the photovoltaic junction box is improved, and false detection is avoided.

The invention discloses an overlapping response separation and peak positioning method for thickness measurement of an ultrathin multilayer transparent material in spectral confocal. The method comprises the following steps: 1, acquiring a spectral confocal calibration spectrum and a transparent material overlapping response spectrum; 2, evaluating random noise distribution, and obtaining an intensity detection threshold value and a shape coefficient; 3, obtaining an overlapping response initial peak value position by using the second derivative of the overlapping response spectrum; 4, calculating a generalized Gaussian function fitting initial parameter of overlapping response; 5, iterating the overlapping response parameters until the fitting residual change before and after iteration meets the precision requirement; 6, discarding overlapping responses which do not meet the measurement constraint; 7, the step 5 and the step 6 are executed again until all the overlapping responses meet the measurement constraint, and the peak value position of each overlapping response is obtained. According to the invention, the separation of spectrum confocal overlapping response is realized, the peak value positioning precision is improved, and the thickness of the ultrathin multilayer transparent material can be measured.

The invention discloses a UV ink curing degree detection device, and relates to the technical field of UV ink detection.The UV ink curing degree detection device comprises a chassis and a detection assembly, a detection box is arranged above the chassis, and the detection assembly is arranged on one side of the interior of the detection box; the detection assembly comprises downward pressing rods, a base, buffer springs, a bottom plate, a rubber roller, a light supplementing lamp, a bottom frame, a scraping plate, a feeding opening, a rolling shaft, a guide plate, a collecting frame, a baffle and a weight meter, one side of the detection box is symmetrically connected with the downward pressing rods, one ends of the downward pressing rods are connected with the base, and one side of the base is symmetrically connected with the buffer springs. During use, the curing degree of UV printing ink can be detected and distinguished, and the position of the UV lamp is adjusted according to a detection result, so that the irradiation light intensity is adjusted, an irradiation area is cooled while detection is carried out, the temperature is prevented from being too high, materials can be stably clamped during detection, and detection misalignment caused by material deviation is avoided.

The invention relates to a fault diagnosis method for a brushless motor controller. The fault diagnosis method comprises the following steps: S1, diagnosing whether inverter circuits Q1, Q2, Q3, Q4, Q5 and Q6 are short-circuited or not; s2, diagnosing whether an inverter circuit Q1 is controllable or not; s3, diagnosing whether an inverter circuit Q3 is controllable or not; s4, diagnosing whether the inverter circuit Q5 is controllable or not; s5, diagnosing whether an inverter circuit Q2 is controllable or not and whether phase lines U and V of the motor are open-circuited or not; s6, whether an inverter circuit Q4 is controllable or not and whether phase lines V and W of the motor are open-circuited or not are diagnosed; and S7, whether the inverter circuit Q6 is controllable and whether the phase lines U and W of the motor are open-circuited are diagnosed. The invention further provides a diagnosis device for implementing the diagnosis method. According to the diagnosis mode provided by the invention, diagnosis is completed before the motor is started, and for detecting whether the mos is short-circuited or not, the mos tube is not impacted, the vibration of the motor is reduced, and the reliability and the diagnosis stability of the system are improved.

The invention provides a passenger vehicle door anti-pinch control method and system based on visual identification. Belongs to the technical field of intelligent traffic and vehicle safety control. The method comprises the following steps: acquiring a vehicle door area video picture through a video acquisition module, and generating vehicle door area original video data; performing video preprocessing according to the original video data of the vehicle door area to generate preprocessed video data; inputting the preprocessed video data into a target recognition module, recognizing a human body or a carried object target, and generating target recognition data; performing target feature extraction according to the target identification data to generate target feature data; according to the passenger-carrying vehicle door anti-pinch control method based on visual identification, the response speed of vehicle door anti-pinch is increased, a response can be made immediately when a target just enters a dangerous area, and potential safety hazards caused by response lag are reduced.

The present invention relates to the field of electrical detection technology, and in particular to an intelligent detection device for waterproof performance of electrical accessories. It includes a workbench, a discharge table and a water baffle, etc.; the workbench is fixedly connected to the discharge table; the workbench is fixedly connected to the water baffle; the discharge table is located inside the water baffle. Water is sprayed out from the water spray hole, and the sprayed water will contact the accessories, thereby spraying the accessories. Since the spherical plate is hemispherical and the water spray holes are distributed throughout the spherical plate, the accessories are continuously sprayed with water during spraying, thereby solving the problem that an area cannot be sprayed uninterruptedly, so that there is less water in the gap and the impact force is small, resulting in the spray water being unable to enter the interior of the accessories through the gap, resulting in detection errors. The hemispherical spherical plate can not only directly increase the spraying area, but also the sponge on the inner wall of the spherical plate can absorb the water splashed back by spraying on the accessories, thereby avoiding subsequent underwater dripping onto the workbench, resulting in the need for subsequent cleaning.

The present application discloses a method for obtaining evidence of illegal parking of a vehicle, an electronic device, and a computer-readable storage medium, including: detecting a target vehicle, obtaining first detection information and second detection information including the ID information of the target vehicle; matching the ID information with the ID information stored in a database; in response to the absence of the ID information generated based on the target vehicle in the database, saving the first detection information and the second detection information as the initial first detection information and the second initial detection information; capturing the target vehicle based on the first control parameter and / or the second control parameter included in the detection information; in response to the last captured image being a close-up image, comparing the license plate information extracted from the close-up image with the license plate information in the second initial detection information, so as to generate the illegal parking evidence result of the target vehicle based on the comparison result. The present application can solve the problems of low capture rate and low evidence collection rate caused by long-term detection of the same target vehicle.

This utility model relates to a testing device, and more particularly to a bottled water quality testing device, comprising a housing, a controller, a first conveyor belt, a testing probe, a fixing frame, and absorbent cotton, etc. The first conveyor belt is located at the bottom of the housing, and a moving mechanism is installed on the inner wall of the housing. The testing probe is connected to the moving mechanism. The controller is installed on one side of the housing, and the testing probe is electrically connected to the controller. A fixing frame is fixedly connected to the side of the housing opposite to the moving mechanism, and a liquid storage frame is slidably connected to the fixing frame. In this utility model, the testing probe is wiped and disinfected with absorbent cotton and disinfectant alcohol, ensuring the cleanliness and hygiene of the testing probe. Simultaneously, the alcohol on the surface of the testing probe evaporates on its own, reaching a dry state, providing a guarantee for subsequent testing work and ensuring the accuracy of the testing.

This invention relates to an insulation monitoring device, comprising: a signal generation unit that generates a measurement signal having a preset voltage and applies the measurement signal to ground through a protective conductor connected to one end of the signal generation unit; a coupling resistor connected to the transmission line; a signal detection unit that includes a detection resistor disposed between the coupling resistor and the other end of the signal generation unit, and detects the voltage of the measurement signal distributed in the internal resistance of the insulation monitoring device formed by the coupling resistor and the detection resistor based on the voltage difference across the detection resistor; and a control unit that detects transient voltages caused by the charging and discharging of a system capacitor formed by parasitic capacitance between the transmission line and the ground from the voltage detected by the signal detection unit, and confirms the connection status of the insulation monitoring device to the transmission line and the ground based on the result of detecting the transient voltage.

The invention discloses a motor stall detection system and method, and relates to the technical field of motor control, and the system comprises a preset register group which is used for storing a preset number of continuous electrical half cycles; wherein the preset number of continuous electrical half cycles comprise the latest electrical half cycle; the calculation circuit is connected with the preset register block and is used for calculating an electrical cycle detection value according to all electrical half cycles in the preset register block; the stall fault judgment circuit is connected with the calculation circuit and is used for determining that the operation condition of the motor to be detected is a motor stall state when the electrical cycle detection value is greater than or equal to a stall threshold value; according to the method, the counter electromotive force between the rising current quadrant and the falling current quadrant can be compared through electrical cycle detection, so that the stall state of the motor is rapidly and conveniently detected, and the detection cost and the operation complexity are reduced; and the motor stall detection can be realized by adopting a digital circuit, the occupied area is small, and the cost is low.

The application discloses an arc length visual detection method, system and device for electric arc additive manufacturing, and relates to the technical field of additive manufacturing detection. The method comprises the following steps: acquiring an original electric arc image; preprocessing the original electric arc image to generate an edge information image; determining a width value at an electric arc peak value in a first dashed line frame in the edge information image; when the width value at the electric arc peak value is greater than or equal to a set threshold value, determining that the edge information image is in an electric arc peak value stage, and deleting the edge information image data in the electric arc peak value stage; and when the width value at the electric arc peak value is less than the set threshold value, determining that the edge information image is in an electric arc base value stage, and generating an arc length change curve according to the edge information image in the electric arc base value stage, thereby solving the problem of difficulty in electric arc arc length detection in electric arc additive manufacturing based on non-melting electrode argon welding.

According to the control system of the facial mask beauty instrument, different pieces of mask cloth are automatically recognized by recognizing the number of the electrodes, so that automatic switching of working modes of the facial mask beauty instrument is achieved, and the problem of manual switching of a user is solved; the polling detection technology is adopted to detect the electrode tip, so that error detection is avoided; during detection, the disadvantage that a single electrode is used as a detection electrode in a traditional system is overcome through the function of the reuse electrode; in addition, the EMS is used as an excitation source, and the normality of the output of the EMS is detected while the skin attaching state is detected, so that the detection precision of the electrode is improved.

The utility model discloses a kind of FPC transparent reinforcing missed pasting detection devices, which can avoid missed detection of FPC transparent reinforcing missed pasting detection devices caused by visual fatigue. The utility model is used for the missed pasting detection of FPC reinforcing plate, two detection windows are opened in the first side surface of FPC, a connecting circuit is provided between the two detection windows, the first side surface of FPC is used for pasting transparent reinforcing plate, the four peripheral edges of transparent reinforcing plate are located within the four peripheral edge range of FPC, and the FPC transparent reinforcing missed pasting detection device comprises a resistance detection device and two probes, the two probes are electrically connected with the resistance detection device, a loop is formed between the two probes and the resistance detection device when the two probes are short-circuited, and the probe is used for aligned insertion into the detection window for missed pasting detection.

The invention relates to the technical field of interventional robots, and discloses a pressure calibration method and device for driving units, and the method comprises the steps: calculating a gravity value corresponding to each driving unit when the driving units in the interventional robot incline; calculating an actual tension value according to the gravity value and a tension detection value corresponding to the driving unit; and on the basis of the actual tension value, the tension detection value corresponding to each driving unit is updated. According to the invention, the influence of the gravity generated by the intervention robot under the inclination condition on the measured value of the pressure sensor can be effectively compensated, so that the measured value of the pressure sensor is more accurate at different inclination angles, false detection caused by gravity change is avoided, and the precision of tension measurement is improved.

This disclosure relates to a stop line detection device that, based on images captured by a front camera of its own vehicle, identifies the boundary lines of the road and lanes in which the vehicle travels, and detects the stop line at an intersection ahead of the vehicle. The stop line detection device comprises: an intersection area detection unit set within the road in which the vehicle travels, corresponding to the intersection area; a pedestrian crossing detection unit that detects pedestrian crossings within the intersection area; a stop line search area setting unit set within the lane in which the vehicle travels, extending from the pedestrian crossing towards the vehicle; and a stop line detection unit that detects stop lines within the stop line search area, wherein the depth of the stop line search area in the direction of extension of the driving lane is less than twice the depth of the pedestrian crossing.

The present invention discloses a nanoprobe for detecting miRNA-21 and its preparation method and application, and relates to the field of bio-nanomaterials, including constructing a long RCA chain rich in G-quadruplex sequence by RCA reaction according to the sequence of miRNA-21, and loading a Blocker chain on the long RCA chain, so as to obtain a nanoprobe LGBN for detecting miRNA-21. The present invention proposes a nanoprobe of a long RCA chain loaded with a Blocker chain rich in a G-quadruplex sequence, the nanoprobe has a certain confinement effect, can significantly improve the reaction speed, and then the nanoprobe is prepared into a kit, which can be used for detecting serum samples, effectively reducing the reaction time, and having a lower detection limit. The kit proposed by the present invention can shoot the product through a portable mobile terminal, and the concentration of miRNA-21 can be obtained by reading and calculating in the cloud, which removes the limitation of the instrument, does not require complicated operation and large instruments, has the characteristics of simplicity, feasibility and portability, and thus builds a fast and simple POCT platform.

The utility model relates to a mine equipment technical field especially relates to a longitudinal tear protection device, it includes: support, telescopic receiving plate, photoelectric sensor and at least two material guide groove. Telescopic receiving plate is located on the support, photoelectric sensor is located on the support, has emission end and receiving end, determines the object existing inboard of support through the light path between emission end and receiving end whether continuous to detect, material guide groove is arranged respectively at both ends of support. The longitudinal tear protection device provided by the utility model adopts telescopic receiving plate, can match the conveyer belt device of different size, improves equipment adaptation rate, adopts photoelectric sensor to detect whether the conveyer belt device bottom has material or conveyer belt falls, thereby realizes longitudinal tear protection, adopts material guide groove and leads the material scattering of conveyer belt device two sides to the support both sides, avoids the problem that sensor detects material scattering leads to false detection, thereby improves detection accuracy.

The invention relates to an industrial equipment electromagnetic radiation covert communication detection data processing method, and belongs to the technical field of communication data processing. The method comprises the following steps: firstly comparing the similarity between the change condition of each environmental data and the change condition of noise, determining the relative influence weight of each environmental data on the noise, then determining a stable change time period in the recent data based on the electromagnetic intensity value of the recent data, and taking the environmental data in the stable change time period as a benchmark reference to determine the relative influence weight of each environmental data on the noise. The method comprises the following steps: comparing the deviation of environment data at the current moment relative to a benchmark reference, determining an adjustment factor in combination with a relative influence weight, and determining a self-adaptive detection benchmark suitable for current detection according to the adjustment factor, thereby effectively eliminating the influence of noise change generated by the fluctuation of a current environment state relative to a recent stable state on the electromagnetic intensity signal detection quantity. Through improvement of an electromagnetic radiation data processing method, a basis reference is provided for more accurate detection of covert communication in an industrial scene.

The utility model discloses a novel solenoid valve detection device comprising a base plate, the bottom of the base plate is uniformly provided with pillars, the middle part of the base plate is transversely provided with a through groove which is through up and down, the through groove is provided with a driving assembly, the driving assembly is connected with two groups of corresponding L-shaped support rods, the base plate is provided with a support plate, and the support plate is connected with the L-shaped support rods. A detection groove is slidably connected to the supporting plate, an electromagnetic valve body is installed in the detection groove, and the electromagnetic valve body is located between the two L-shaped supporting rods; a detection assembly is arranged at the top of the bottom plate and used for conducting air tightness detection on the electromagnetic valve body, the detection assembly is connected with connectors at the two ends of the electromagnetic valve body, and a drying assembly is arranged at the top of the bottom plate and used for conducting hot air drying on the detected electromagnetic valve body. The utility model belongs to the technical field of electromagnetic valve detection, and particularly relates to a novel electromagnetic valve detection device.

The present invention relates to a method, device, electronic device and storage medium for correcting the amount of oil in a fuel tank. The method comprises: during the process of refueling the fuel tank, the oil amount value is detected in real time by an oil amount sensor. If the oil amount value does not conform to the oil amount change trend during the refueling process, the oil amount deviation value is determined based on the erroneous oil amount value detected at the first target historical moment and the non-erroneous oil amount value detected at the second target historical moment. At the end of the refueling process, the oil amount value to be corrected is recorded, and when the oil amount deviation value meets the oil amount correction condition, the oil amount correction value is determined based on the obtained oil amount deviation value. Finally, based on the oil amount correction value, the oil amount value to be corrected is corrected to obtain the corrected oil amount value. The present invention realizes the deviation correction of the oil amount value detected by the oil amount sensor during refueling, avoids the oil amount detection error in the mailbox caused by abnormal scenes such as oxidation of the oil amount sensor, and avoids abnormal fluctuations in the oil amount value displayed on the vehicle.

The utility model discloses a hydrogen energy automobile air compressor production detection device, relates to the technical field of air compressor detection devices, and adopts the technical scheme that the hydrogen energy automobile air compressor production detection device comprises an air tank and a detection table; two groups of placing grooves are formed in the detection table, a first temperature sensor and a second temperature sensor are respectively placed in the two groups of placing grooves, the two sides of the first temperature sensor are fixedly connected with first electromagnetic chucks, and the two sides of the second temperature sensor are fixedly connected with second electromagnetic chucks; handles are fixedly connected to the first temperature sensor and the second temperature sensor, and control buttons used for controlling the electromagnetic chuck are mounted on the first temperature sensor and the second temperature sensor, so that quick mounting and dismounting are facilitated; the device has the advantages that whether the air compressor temperature control system is qualified or not can be detected, the detection device can perform mass detection in a quick disassembly mode, and the detection method is convenient and simple.

The invention discloses a cable trench detection method, and relates to the technical field of data transmission, and the method comprises the following steps: obtaining image data of different resolutions and color depths of a to-be-detected cable trench, carrying out the fragmentation processing of the image data, compressing the fragmented data, and transmitting the compressed data to a system; the system decompresses the received compressed image data to obtain transmission factor influence data of the image data; constructing a transmission factor model based on a machine learning algorithm according to the transmission factor influence data; adjusting transmission factor influence data based on a transmission factor model to achieve optimal transmission energy efficiency; the transmission factor is dynamically adjusted by adjusting the slice size, the resolution and the color depth, so that the optimal transmission efficiency and energy efficiency are achieved, and the problem that the quality of image data is ensured while the transmission speed meets the requirement is solved.

According to the skin-attaching induction method of the beauty instrument, the stable multi-frequency signals are generated through the PID control algorithm, it can be ensured that the voltage signals on the electrodes are stable, and the accuracy and reliability of the signals are improved; detecting each electrode by using the generated multi-frequency signal in a rotation training mode to obtain current effective values under different frequencies; by changing the frequency, measuring the impedance change under different frequencies and analyzing the change of capacitance and resistance, the fitting state of the electrode and the skin and the moisture content are judged.

The invention discloses a vehicle transverse takeover intention detection method and device, electronic equipment and a storage medium, and relates to the technical field of automatic driving. The method comprises the steps that when transverse control of a current vehicle is started, the current vehicle speed, the current hand torque, the current hand torque direction, the current duration time and the preset duration time in the automatic driving process are obtained; calculating a hand torque reference value corresponding to the current vehicle speed according to the current vehicle speed; according to the comparison result of the current hand torque and the hand torque reference value, the change detection result of the current hand torque direction and the comparison result of the current duration and the preset duration, the current transverse take-over intention of the driver of the current vehicle is determined. The technical scheme of the embodiment of the invention can improve the detection accuracy of the vehicle transverse takeover intention of the driver.

The embodiment of the utility model discloses an interactive sensing assembly, an area light source lamp panel and a table lamp. The interactive sensing assembly comprises an outer frame which comprises a lower frame plate and a side frame plate, the lower frame plate is provided with a lower window, and the side frame plate is provided with a side window; the touch sensing unit comprises a front seat body and an electrode fixedly connected with the front seat body, and the front seat body covers the inner side of the side window and is provided with a light transmitting part opposite to the side window; the rear seat body is made of a light-transmitting material and covers the inner side of the lower window; the flexible circuit board comprises a front part and a rear part formed by extending backwards from the upper edge of the front part, and the front part is arranged between the front seat body and the rear seat body and is used for shading; the indicating lamp is arranged on one surface, facing the light-transmitting part, of the front part; and the photosensitive element is arranged on one surface, facing the rear seat body, of the rear part and is used for receiving light entering through the rear seat body. The indicating lamp and the photosensitive element are installed on the flexible circuit board in a concentrated mode, circuit connection is simplified, assembly is simpler and more convenient, and false detection of the photosensitive element is avoided through reasonable shielding.

The utility model discloses a universal positionable magnetic stomach tube, which comprises a stomach tube, the stomach tube comprises a stomach tube body, a stomach tube head arranged at one end of the stomach tube body and a sealing joint arranged between the stomach tube body and the stomach tube head, the stomach tube head is arranged at one end of the stomach tube body inserted into the body of a patient, and the sealing joint is arranged at the other end of the stomach tube body inserted into the body of the patient. The two are connected through the sealing joint; the positioning device comprises a handheld magnetic detector and a position tracker, the handheld magnetic detector and the position tracker are both arranged outside the body of a patient, the position tracker comprises a magnetic detector, and the handheld magnetic detector and the magnetic detector are not connected. The stomach tube can be conveniently and smoothly inserted into the esophagus and the stomach of a patient, the stomach tube can still be monitored through the positioner after being placed in the body of the patient, the use difficulty of clinical medical staff is relieved, meanwhile, mistaken detection caused by misoperation is avoided, and the occurrence of mistaken insertion accidents of the stomach tube in clinic can be reduced.

The present invention discloses an infrared-visible light fusion recognition system based on modal difference feature guidance, including a dual-stream backbone network module, an illumination heat perception module and a cascade region proposal module, wherein the dual-stream backbone network module includes an infrared feature extraction unit, a visible light feature extraction unit and a feature guidance unit, wherein the infrared feature extraction unit obtains infrared features of different scales of the original infrared image, and the visible light feature extraction unit obtains visible light features of different scales of the visible light image; the feature guidance unit obtains weighted infrared features and weighted visible light features; the illumination heat perception module obtains the credibility weights of the visible light features and the credibility weights of the infrared features; the cascade region proposal module is used to obtain the recognition result of the target. The present invention adopts an inter-level feature generation method of supplementary learning guided by inter-modal feature differences, which improves the dependency of inter-modal feature representation and improves the generalization ability of the network system.

The embodiment of the invention provides an image processing method, computing equipment, a storage medium and a computer program product, and the image processing method comprises the steps: determining a plurality of insurance claim settlement images, carrying out the image type detection of each insurance claim settlement image, and determining the image type of each insurance claim settlement image; based on the image type, determining a target insurance claim settlement image from the plurality of insurance claim settlement images, and determining to-be-detected data from the target insurance claim settlement image; based on the to-be-detected data, determining historical detection data corresponding to the to-be-detected data, and performing insurance claim detection on the to-be-detected data based on the historical detection data to obtain an insurance claim detection result, the historical detection data being data passing the insurance claim detection; therefore, an accurate insurance claim settlement detection result is obtained; and the problem of detection errors possibly caused by a manual detection mode is avoided.

The present invention relates to a bearing fixing structure and a wheel assembly including the structure, wherein the bearing fixing structure includes a wheel axle, a first bearing connected to the wheel axle, and a first clamping ring, and a dustproof structure is also connected to the outer side of the first wheel axle, and the dustproof device has a part that wraps the first bearing and / or the first clamping ring. The present invention provides a first support pad and a second support pad, and the first support pad and the second support pad both have a part that extends and can wrap the first bearing inside, thereby preventing the first bearing from being affected by dust or grass clippings, and effectively improving the service life of the first bearing.