131 results about "Metallic foreign body" patented technology

The invention relates to the technical field of wireless charging, and provides a foreign matter detection method and system for a wireless charging system and a storage medium. The method comprises the following steps: firstly, calibrating at multiple temperature points and establishing a temperature-parameter comparison table under the condition of no foreign matters; in a no-load standby state, the inversion module sends out detection drive and collects voltage, current and temperature; calculating a real-time quality factor and resonant frequency according to sampling, obtaining a compensation reference according to a temperature look-up table, and solving the variation of the quality factor and the resonant frequency; and performing fusion judgment by adopting dual-condition locking or weighted scoring, and triggering fault protection when a foreign matter is confirmed. Due to the fact that equivalent inductance and resistance changes are caused by metal foreign matters, quality factors are remarkably reduced along with resonant frequency deviation, temperature excursion and foreign matter effects are distinguished through temperature compensation, and dual-condition locking or weighted scoring fusion judgment is combined, the interference immunity and accuracy of detection are improved, false alarms and missing alarms are remarkably reduced, and the detection accuracy is improved. The method is suitable for high-power wireless charging scenes.

The invention discloses an intelligent iron removal monitoring management method and system for a conveying belt and a storage medium, and the method comprises the steps: obtaining ferromagnetic target information, generating a foreign matter monitoring report according to the ferromagnetic target information, and finally carrying out the iron removal operation according to the foreign matter monitoring report and the state information of an iron removal unit. According to the device, metal foreign matters of different types and positions are sucked and removed, an operation instruction can be sent out in time before the foreign matters reach an iron removal area, timely and accurate actuation of the iron removal unit is ensured, the iron removal efficiency and accuracy of the conveying belt are remarkably improved, the impact risk on coal flow of the conveying belt is reduced, and the service life of the conveying belt is prolonged. And the automation level and the real-time monitoring capability of the system are improved.

The invention discloses a reference frequency calibration and foreign matter detection method for a wireless charging system. The method comprises the following steps: firstly, acquiring coil initialization resonant frequency and recording a reference input current value in a no-load state of a transmitting end; then dynamically adjusting the reference resonant frequency through a pre-established compensation model based on the environment temperature and the input voltage; detecting the offset between the adjusted reference frequency and the actual resonant frequency and the input current offset in real time, and comparing the offset with a preset threshold value to judge the metal foreign matter; and for the condition that the frequency deviation is in the preset verification interval, the transmitting end and the receiving end complete communication protocol handshake and then are switched to the resonant working frequency, and charging is started, so that accurate calibration of the idle standby frequency and efficient identification of the foreign matter are realized.

The application discloses a general surgery operation trauma nursing device and belongs to the technical field of medical devices, which comprises a body, and a separation component is arranged on the inside and outside of an operating table, wherein the separation component comprises a collecting frame which is inserted into the operating table, a scraping ring is fixedly connected to the inside of the collecting frame, a protective cover is arranged in the operating table, and a driving motor is arranged in the protective cover. The magnetic block ring is arranged to adsorb metal foreign matters, and the rotating disc accelerates the flow of liquid after rotation, so that the foreign matters and necrotic tissues are quickly separated. Since the magnet ring can adsorb the metal foreign matters during rotation, the foreign matters and necrotic tissues are separated, the foreign matters carrying the necrotic tissues are prevented from sinking into the physiological saline and being difficult to separate, and the rotating disc only accelerates the flow speed of the physiological saline during stirring of the physiological saline, so that the over-dissolution of the necrotic tissues is reduced, and the separation effect of the foreign matters and the necrotic tissues is guaranteed.

The present application belongs to the field of clothes processing equipment, and specifically discloses a clothes processing equipment metal foreign matter detection method, device and storage medium. The method comprises the following steps: in the process of putting clothes into the clothes processing equipment, firstly, collecting the real-time geomagnetic field intensity data set of the clothes processing equipment through the geomagnetic sensor; then, obtaining the denoised geomagnetic field intensity data set by denoising the real-time geomagnetic field intensity data set; secondly, establishing a denoised position fingerprint map according to the denoised geomagnetic field intensity data set; finally, inputting the denoised position fingerprint map into a preset field intensity time sequence classification model to obtain the detection result of whether there is metal foreign matter in the clothes. The method provided by the present application can reduce energy consumption, is not limited by the time range, can improve the accuracy of metal foreign matter classification detection, effectively improve the accuracy of metal foreign matter detection, reduce the complexity of detection, and improve the user experience.

The technical problem of the present invention is to provide a magnetic detection system capable of detecting metal foreign matters with high sensitivity. As a technical means for solving the technical problem, a magnetism detection system (100) is provided with: a signal generation circuit (501) that generates an excitation signal (P); an excitation coil (250) to which an excitation signal (P) is supplied; a buffer circuit (503) connected between the signal generation circuit (501) and the excitation coil (250); magnetic sensors (40A, 40B) that are disposed on opposite sides of each other in the coil axis direction when viewed from the excitation coil (250); a sample stage (300) that holds a sample (310) between the excitation coil (250) and the magnetic sensor (40A); and a detection circuit that generates a detection signal (OUT) on the basis of the difference between the output signals (Pa, Pb) output from the magnetic sensors (40A, 40B). As a result, it is possible to suppress a disorder in the waveform of the excitation signal (P) by means of the snubber circuit (503), and thus it is possible to detect a metal foreign object with high sensitivity.

The application relates to the technical field of textile detection, and discloses an automatic detection and rejection device for textiles, which comprises a base, a transmission device for transmitting the textile to be detected, a first detection mechanism for detecting metal foreign matters in the textile to be detected, a second detection mechanism for detecting non-metal foreign matters in the textile to be detected, a cleaning mechanism for cleaning the transmission belt, a rejection mechanism arranged at the rear end of the first detection mechanism and the second detection mechanism respectively and used for rejecting the textile containing foreign matters, and a slide way installed at the rear end of the first detection mechanism and the second detection mechanism and used for conveying the textile containing foreign matters. The textile to be detected is conveyed to the first detection mechanism and the second detection mechanism by the transmission device, metal foreign matters and non-metal foreign matters in the textile can be separated and detected at the same time, and the detection accuracy is greatly improved.

The application relates to the field of battery detection. The application can effectively detect metal foreign matters in battery materials. The application discloses a metal foreign matter detection method, device, electronic device and storage medium for battery materials. The metal foreign matter detection method comprises the following steps: performing X-ray imaging on the battery material to obtain a material image; processing the material image to obtain a metal foreign matter image; and counting target metal foreign matters in the metal foreign matter image to obtain the number of the target metal foreign matters. In the metal foreign matter detection method, the battery material is subjected to X-ray imaging to obtain a material image, and the material image is processed to obtain a metal foreign matter image, so that the number of target metal foreign matters can be effectively detected.

This utility model relates to the field of extrusion device technology, specifically to a precise temperature-controlled thermoplastic elastomer production extrusion device, including an extruder body with a feed inlet and a discharge channel. An outer cover is fixedly connected to the discharge channel. The outer cover contains a screening component for screening for metal foreign objects in the material. The screening component includes a receiving box located inside the outer cover, with a movable frame slidably connected to the receiving box. This utility model uses the screening component to allow material from the feed hopper to enter the receiving box. A motor-driven metal detector then screens and checks the material in the receiving box for metal foreign objects. If no foreign objects are found, a cam divider rotates the receiving box, discharging the material into the extruder body. If foreign objects are found, a drive component pushes the outer cover, separating the discharge channel from the feed inlet, thus facilitating the discharge of material containing foreign objects.

The utility model provides a kind of feed additive metal foreign matter multistage detection device, including rack, and be provided with feeding mechanism, level material mechanism and detection mechanism on rack, and feeding mechanism is used to transport feed additive;Level material mechanism includes level material belt, two level material rollers and driving part;Two level material rollers are respectively along transverse rotation to set on rack;Level material belt is set to two level material rollers outside, and is placed in the above of feeding mechanism.Utilize level material belt that feeding mechanism import is provided, and level material belt rotation setting, the material that enters the import of feeding mechanism is flattened, and the larger metal foreign matter that enters therein is preliminarily screened, and is blocked in import outside, so that it does not enter into feeding mechanism.Level material belt forms stable flat conveying, avoids feed stacking, solves the problem that feed additive is prone to stacking in conveying process, reaches the effect that feed additive is flatly conveyed, provides stable material state for subsequent detection.

The present application discloses a kind of clothes processing equipment and metal foreign matter detection method, the clothes processing equipment includes the metal detection module and infrared induction module being arranged at clothes delivery port;The metal foreign matter detection method includes: if it is judged that the interval time of the trigger signal generated by infrared induction module and the signal sensed by metal detection module exceeds the set interval time, it can be inferred that the user performs the clothes taking action, and the alarm device is not controlled to work.The above-mentioned metal foreign matter detection method provided by the present application can accurately distinguish and judge whether the user is throwing clothes or taking clothes.When it is judged that the interval time of the trigger signal generated by infrared induction module and the signal sensed by metal detection module exceeds the set interval time, it is inferred that the user is performing the clothes taking action, and the alarm device is not controlled to work, to avoid false alarm when taking clothes to bring the user's distress, improve the user's experience.

The utility model relates to foreign matter detection equipment for dried longan production, which comprises a frame and a first conveyor belt mounted on the frame, a push plate and a slide plate are respectively arranged on two opposite sides of the first conveyor belt, a metal detector positioned right above the first conveyor belt is arranged between the push plate and the slide plate, a second conveyor belt is arranged below the slide plate, and the second conveyor belt is arranged below the slide plate. A plurality of collecting boxes distributed at equal intervals are placed on the second conveying belt, one collecting box is located under the end, away from the first conveying belt, of the sliding plate, a driving unit used for driving the push plate to move in the direction close to or away from the sliding plate is arranged on the rack, and a controller is arranged in the rack. The first conveying belt, the second conveying belt, the metal detector and the driving unit are all electrically connected with the controller; when the metal detector detects that dried longans on the first conveyor belt contain metal foreign matters, the push plate pushes the dried longans containing the metal foreign matters into the collection box, so that the stop time of the first conveyor belt is shortened, and the metal detection efficiency is further improved.

To provide a magnetic foreign metal substance removal device that is safe and has no unnecessary labor because it can check a monitor in a safe remote location and automatically check the adsorption status of magnetic foreign metal substances using AI, and also can remove magnetic foreign metal substances mechanically, making it very convenient and safe. [Solution] A magnetic metal foreign matter removal device for removing magnetic metal foreign matter used in a pipeline through which granular material passes comprises at least a magnet for attracting the magnetic metal foreign matter, a camera for capturing the state of the magnet, image data captured by the camera, and AI for analyzing the image data, and is characterized in that the AI ​​is trained to learn the image data in advance and determines whether or not the magnetic metal foreign matter has been attracted.

This invention provides a technology that efficiently suppresses the generation of metallic foreign matter when fixing screws to a metal plate. [Solution] The metal chassis 300 has a first surface 310, a second surface 312 facing the opposite side of the first surface 310, and a first through-hole 330 that penetrates between the first surface 310 and the second surface 312. The rear resin cover 500 has a third surface 510 facing the second surface 312, a cylindrical projection 520 that protrudes from the third surface 510 and is inserted into the first through-hole 330, a fourth surface 512 facing the opposite side of the third surface 510, and a second through-hole 530 that penetrates between the tip 522 of the cylindrical projection 520 and the fourth surface 512. The screw 600 has a shaft portion 610 that is inserted into the second through-hole 530, and a head portion 612 that is connected to the shaft portion 610 and is positioned on the fourth surface 512 without being inserted into the second through-hole 530.

The utility model discloses a foreign matter prevention mechanism of a paper conveying machine, which relates to the technical field of paper conveying machine equipment and comprises a bumper and a strong magnet, the bumper and the strong magnet are transversely arranged above a conveying platform and are fixed on an installation fixing block, the bumper is arranged in front of the strong magnet, and the strong magnet is arranged in front of the bumper. A space for paper to pass through is arranged below the bumper, the height of the space is limited to be higher than that of the bottom of the bumper, the installation fixing block is fixedly connected to the positioning square block and forms a lever structure through a rotating pin, the positioning square block abuts against the trigger end of the microswitch, and the microswitch is connected to the alarm. The utility model provides a foreign matter preventing mechanism of a paper conveying machine, which can be used for processing large foreign matters and metal foreign matters and can give an alarm when the foreign matters are stuck.

The invention relates to a preparation method of an integrated nonmetal spin-vibration screen frame, an upper screen frame structure of spin-vibration screen equipment adopts a screen frame and multiple layers of screen meshes which are integrally formed through plastic injection, and the preparation method of the screen frame structure comprises the following steps: S1, mixing epsilon-caprolactam, diisocyanate, an antioxidant and glass fibers to obtain a component A; mixing a Grubbs catalyst with water to form a catalyst solution as a component B; s2, the component A and the component B are contained in a storage tank of an RIM forming machine, and then injection reaction forming is conducted through the RIM forming machine; and S3, the upper surface of the screen and the inner walls of the meshes are subjected to plasma roughing treatment, and then molten plastic with the component C containing metal particles is sprayed for crystallization attachment. The invention has the beneficial effects of light weight, long service life and avoidance of non-metal foreign matters.

The present invention detects foreign metal matter of a prescribed size that is deposited on a substrate. A detection device (1) comprises an electrode sheet (5), a measurement unit (31), and a determination unit (32). The electrode sheet (5) has a pair of counter electrodes (11, 12) and an insulating sheet (13). The pair of counter electrodes (11, 12) include a first counter electrode (11) and a second counter electrode (12). The insulating sheet (13) supports the pair of counter electrodes (11, 12). The first counter electrode (11) has a plurality of first wiring electrode parts, and the second counter electrode (12) has a plurality of second wiring electrode parts. The plurality of second wiring electrode parts alternate with the plurality of first wiring electrode parts with a space (s1) therebetween. The measurement unit (31) measures an electrical value between the pair of counter electrodes (11, 12) of the electrode sheet (5). On the basis of measurement results from the measurement unit (31), the determination unit (32) determines whether short circuits occur between the pair of counter electrodes (11, 12) due to foreign metal matter (F1) deposited on a substrate (10). The electrode sheet (5) is provided to an outer circumferential surface (6a) of a roller (6) that moves in a relative manner over the substrate (10).

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a battery production process metal foreign matter rapid detection and screening method and management and control system, and the method comprises the following steps: S1, key point location identification and system deployment and control; s2, rapid collection and sampling; s3, rapid detection and correlation analysis; and S4, performing rapid feedback and source management and control. According to the invention, a closed-loop management and control system of collection-detection-analysis-feedback is constructed, a gate for management and control of metal foreign matters is moved forward from post-event inspection to process prevention, and near-real-time monitoring and rapid traceability are realized.

The present application belongs to the technical field of wireless charging, and particularly relates to a metal foreign matter detection device and method for wireless charging. The present application processes the induced voltage signal generated by the detection coil and calculates the foreign matter detection index to determine whether there is foreign matter. Meanwhile, when the detection time reaches the set baseline update window length, the magnetic flux ratio baseline value when there is no metal foreign matter is updated. When the detection time reaches the set safety threshold update window length, the preset safety threshold is updated. The present application can eliminate the influence of power fluctuation on the detection result, and update the magnetic flux ratio baseline value when there is no metal foreign matter and the preset safety threshold regularly, thereby effectively suppressing the errors caused by temperature drift and environmental interference, and the detection errors caused by the relative offset between the transmitting end and the receiving end, realizing the decoupling of the foreign matter detection process and the power transmission process, and improving the stability, accuracy and tolerance of the foreign matter detection under the position offset working condition.

A metallic foreign material analysis system according to exemplary embodiments of the present invention comprises a foreign material analysis unit, wherein the foreign material analysis unit generates respective X-ray transmission images of a sample and a reference sample, image-processes the X-ray transmission image of the sample so as to generate mapping image data of the sample in which metallic foreign materials having a diameter of predetermined range are selectively displayed, and generates component analysis data for each of the metallic foreign materials identified in the mapping image data.

The invention relates to the technical field of metal foreign matter detection, and discloses a metal foreign matter detection system of a wireless charging system, which comprises an active excitation coil arranged in a wireless charging area of the wireless charging system and positioned above a transmitting coil of the wireless charging system, and a detection coil positioned above the active excitation coil, the active excitation coil is composed of a pair of D-shaped coils which are reversely connected in series on a circuit, are arranged left and right in a space and have the same geometric parameters, and the active excitation coil is driven to form a detection magnetic field in a wireless charging area; the detection coil comprises a plurality of detection channels, and each detection channel is composed of a pair of coils which are reversely connected in series on a circuit, are symmetrically arranged in a space up and down and have the same geometric parameters. By detecting the output voltage of each detection channel in the coil under the detection magnetic field or the combined magnetic field of the detection magnetic field and the energy transmission magnetic field of the wireless charging system, the metal foreign matters in the wireless charging area are detected before and after the wireless charging system starts charging.

To provide a needle detector and a needle-detection system capable of linking the needle detector with an inspection machine used in a post-process following inspection by the needle detector.SOLUTION: A needle detector 10 inspects an inspection target conveyed in a specified conveying direction to determine whether a metal foreign object is mixed therein. The needle detector 10 includes: a detection device 14 that generates a current in accordance with a change in a magnetic field when the metal foreign object passes through the magnetic field; a first reader 15 that reads, in a non-contact fashion, product information of the inspection target stored in an electronic tag 16 attached to the inspection target; and a first processing circuit 31 that detects the metal foreign object based on the current generated by the detection device 14. The first processing circuit 31 generates inspection history information SH that is information obtained by associating the product information of the inspection target with a detection result of the metal foreign object, and transmits the generated inspection history information SH to an X-ray inspection machine 20. The X-ray inspection machine 20 is used as an inspection machine in a post-process following inspection by the needle detector 10.SELECTED DRAWING: Figure 4

To provide a pediatric surgical device for removing metal objects from the digestive tract. [Solution] The pediatric surgical device has an adjustable frame 1, with position-limiting rings 2 fixedly connected to both the left and right side walls of the adjustable frame, a contact plate 3 provided above the adjustable frame, a sliding rod 4 fixedly connected to the lower end of the contact plate, the lower end of the sliding rod passing through the upper side wall of the adjustable frame and fixedly connected to a traction rope 7, an elastic storage mechanism 6 provided at the lower end of the extension outer tube 5, and a clamping mechanism provided at the lower end of the traction rope. By installing the elastic storage mechanism, the entire foreign object is softly encased after being clamped, preventing the corners of the foreign object or the edges of the instrument from injuring the gastrointestinal mucosa, thereby significantly improving the safety of pediatric surgical procedures.

The invention relates to a coil structure for detecting metal foreign matters and a manufacturing method thereof, the coil structure comprises a main coil and an auxiliary coil which are integrally wound into a whole by connecting a single copper wire in series, and the auxiliary coil is positioned on the side surface of the main coil and faces the center of the main coil. The single copper wires are connected in series and integrally wound into the integral main coil and auxiliary coil, when current flows through, the coils can generate magnetic fields in corresponding directions due to different positions of the coils, finally metal foreign matters in multiple directions are detected, and missing detection is avoided.

The embodiment of the invention relates to the technical field of metal foreign body detection, in particular to a metal foreign body detection method based on multi-defect feature fusion and a robot system. The method comprises the following steps: arranging an excitation coil and a detection coil; sampling points are obtained; circularly reading new sampling points, and executing the following steps: reading amplitudes of newest n1 sampling points, forming a statistical set, calculating to obtain a confidence interval, and when 95% of the confidence interval is exceeded, judging that the current sampling point is a suspicious sampling point, and entering the next step; reading the latest n2 sampling points, dividing the sampling points into three window segments in a non-overlapping manner, calculating the slope of the window segments, marking the current sampling point as an abnormal sampling point when the slope is reversed, and entering the next step; reading the first N-1 sampling points, obtaining the number N'of the abnormal sampling points in the N sampling points, determining that the current sampling point is an abnormal sampling point when the ratio of N 'to N exceeds a preset reference threshold value, and giving an alarm.

The invention discloses a metal particle foreign matter detection positioning device and method based on an electromagnetic induction principle, relates to the technical field of foreign matter detection, and solves the problems that the product quality is affected and equipment is damaged due to the fact that metal impurities are mixed into a production line. A metal foreign matter detection device and a transmission mechanism are arranged at the upper end of a support, and the transmission mechanism penetrates through the interior of the metal foreign matter detection device; a steering mechanism is arranged at one end of the transmission mechanism, and a portal frame type positioning device is arranged above the other end; a positioning module is movably arranged on the portal frame type positioning device; the central control cabinet is connected with the portal frame type positioning device, the metal foreign matter detection device, the transmission mechanism and the steering mechanism. On the basis of the electromagnetic induction principle, the two-dimensional coordinates of the metal foreign matters in the detected object are obtained through calculation according to the area where the metal foreign matters are obtained through two times of detection before and after rotation of the detected object, the metal foreign matters are positioned, the metal foreign matters can be effectively detected and removed, and a guarantee is provided for safe and orderly production.

The present invention relates to a method for detecting metallic foreign matter in an electrode active material, comprising a first step of dissolving an electrode active material in a nitric acid aqueous solution to form a metallic foreign matter extraction solution, a second step of plating the metallic foreign matter in the metallic foreign matter extraction solution onto an electrode, and a third step of measuring the content of the metallic foreign matter plated onto the electrode.

The present invention provides a metal foreign object detection circuit and a wireless charging metal foreign object detection system with no blind spots. The circuit includes four blind spot detection coils distributed in four quadrants. The first and third quadrant blind spot detection coils are connected to a first differential foreign object detection circuit; the second and fourth quadrant blind spot detection coils are connected to a second differential foreign object detection circuit. Both differential foreign object detection circuits are provided with differential amplifier circuits. One blind spot detection coil is connected to one input of the differential amplifier circuit via an overcompensated signal acquisition channel, while the other blind spot detection coil is connected to the other input of the differential amplifier circuit via an undercompensated signal acquisition channel. When the absolute value of the output voltage of the first differential foreign object detection circuit or / and the second differential foreign object detection circuit exceeds a preset threshold, a metal foreign object is detected. The effect is that the circuit can sensitively detect the entire area above the transmitting coil of the wireless charging system without any detection blind spots.

The utility model discloses a food metal foreign matter combined removing device, and belongs to the technical field of food processing. The device is novel in design and ingenious, by arranging an adsorption mechanism, the screening efficiency of metal impurities can be greatly improved, a small amount of raw materials are continuously conveyed to the top of a magnetic conveying belt through a conveying plate by means of a stirring rod, and the magnetic conveying belt conducts transmission through rotation of a transmission roller; when the raw materials are conveyed to the right side, the raw materials fall down, the metal impurities continue to be adsorbed to the surface of the magnetic conveying belt, and when the raw materials are conveyed to the transverse rod, the metal impurities adsorbed to the surface of the magnetic conveying belt are scraped through a metal brush and fall into a collecting box to be collected. And the magnetic conveying belt can circularly screen out metal impurities in the raw materials, the problem that the metal impurities in the raw materials are not fully screened out is avoided, and the practicability of the device is greatly improved.