23results about How to "Accurate and stable detection" patented technology

The present invention relates to the field of hot-rolled coil detection technology, and in particular to a detection device and method for hot-rolled coil of wheel steel, comprising a support frame, a guide wheel is installed on the side of the support frame, a pressing assembly fixedly connected to the support frame is provided on the side of the guide wheel, a transmitter fixedly connected to the support frame is provided above the pressing assembly, and a receiver fixedly connected to the support frame is provided on one side of the blocking plate; the present invention irradiates the surface of the coil by the arranged transmitter, and when the surface of the coil is smooth, its light is reflected normally, and once a defect occurs on the surface of the coil, the light is irradiated on the defective area, and the light is reflected to the inside of the receiver under the action of the defective area, and an alarm lights up at this time to remind the staff that there is a defect in this area. This detection method does not require manual hand-held irradiation on the hot-rolled coil and then careful identification, which greatly reduces the staff's eye fatigue intensity and can perform continuous detection.

The invention relates to a wafer edge defect detection device and method, and the device comprises a side edge detection module which is configured to collect the image data of the side edge of a to-be-detected wafer based on the scattering of the side edge of the to-be-detected wafer, the side edge detection module comprises a U-shaped light source, and the U-shaped light source is used for irradiating the side edge of the wafer at different angles; the chamfer detection module is configured to collect image data of the to-be-detected wafer chamfer based on scattering of the to-be-detected wafer chamfer; and the transmission detection module is configured to acquire image data of internal defects of the edge of the wafer to be detected through transmission of the short-wave infrared light source. According to the wafer edge defect detection device provided by the invention, the defects at the same position are comprehensively judged through three detection modes, so that the possibility of misjudgment is reduced.

The invention relates to the technical field of chiral substance detection, and discloses a terahertz circular polarization system for detecting chiral substances. The invention provides a terahertz circular polarization system for detecting chiral substances. The terahertz circular polarization system comprises a terahertz emitter, a terahertz detector, a first off-axis parabolic mirror, a second off-axis parabolic mirror, a third off-axis parabolic mirror, a fourth off-axis parabolic mirror, a first polaroid, a third polaroid, a second polaroid and a quarter-wave plate. The terahertz circular polarization system for detecting the chiral substance provided by the invention can stably and accurately detect the chiral substance.

The utility model relates to the technical field of electromagnetic flow meters, in particular to an electromagnetic flow meter capable of detecting high-frequency pulsating flow, which comprises a measuring conduit, a lining is arranged on the inner side of the measuring conduit, an electrode is arranged on the inner side of the lining, an iron casing is arranged on the outer side of the measuring conduit, and a high-frequency coil is arranged on the inner side of the iron casing. The upper side of the iron shell is connected with a flow meter, the outer side of the flow meter is provided with a control button and a display, and the inner side of the flow meter is provided with a magnetic circuit module, a converter, a frequency converter, a flow acquisition module and a digital filtering module; high-frequency excitation real-time flow is collected through the flow collecting module, digital filtering processing is carried out through the digital filtering module, finally average flow processed through a filtering algorithm is displayed through a display screen, flow meter frequency output is compared with average flow output, equivalent pulse output and cumulant are compared with the real-time high-frequency flow, and the real-time high-frequency flow is obtained. And the high-frequency pulsating flow can be accurately and stably detected.

The invention discloses a detection device based on nano-enzyme signal amplification as well as a use method and application thereof, and belongs to the technical field of protein detection. The problems that operation is difficult when a tear specimen is collected, stimulation to a tear film is large, and elution of collected tears can affect a result are solved. The method comprises the following steps: preparing a substrate with a microcavity, carrying out surface modification on a transparent film used for being embedded into the substrate, fixing a capture antibody to prepare a capture platform, and embedding the modified transparent film into the capture platform; nano-enzyme with peroxidase-like activity is coupled with a detection antibody in a carboxyl activation mode, and a nano-enzyme enhanced detection probe is prepared; adding the detection probe to a capture platform contacted with an object to be detected, incubating, and washing; then adding a hydrogen-donor substrate and peroxide to carry out a chromogenic reaction, and adding a stop solution to stop the chromogenic reaction after the reaction is sufficient. The method has the performance of noninvasively, stably and accurately detecting the protein in the tears.

The utility model belongs to detection device technical field, concretely relates to a pH value detection system, including the reaction kettle, the reaction kettle middle part is connected with the buffer tank, is provided with the flow pump between the reaction kettle and buffer tank, is provided with the protective liquid entrance, pH probe and thermometer at the buffer tank top, the reaction kettle middle part is linked with buffer tank lower part, buffer tank upper part is linked with the reaction kettle upper part, is provided with the clamping sleeve outside buffer tank, is connected with the steam spray tank at buffer tank lower part, is provided with the circulating air pump at steam spray tank side part, is provided with the cleaning fluid entrance in buffer tank middle part, pH probe and thermometer electric connection have the controller. The utility model carries out the real -time control of reaction process through the controller, can realize the timing cleaning and the programmed operation, need not manual intervention, the degree of automation is high, has reduced the working strength and the security risk of maintenance personnel greatly.

The invention discloses a low-complexity high-resolution howling detection suppression method and system for a digital hearing aid, and the method comprises the steps: collecting a sound signal of a surrounding environment, converting the sound signal into a digital signal, carrying out the preprocessing of the digital signal, and obtaining a preprocessed signal; decomposing the pre-processed signal through a multi-channel filter bank, outputting a multi-channel signal, detecting whether the current environment sound signal has howling according to the energy distribution condition of the multi-channel signal, and obtaining a howling detection result; according to the digital hearing aid, the calculation complexity is reduced and the detection precision is improved in a multi-stage processing and step-by-step refining mode, and the multi-channel decomposition module and the filtering module in the digital hearing aid can be deployed and operated on a low-power-consumption and low-calculation-power platform with extremely low resource overhead; and preset weight adjustment is carried out through a weight adjustment mechanism, so that stable and accurate detection and howling suppression of the system in practical application are ensured, and the system is suitable for wide popularization and application.

The utility model discloses a lifting detection structure which comprises a vertical installation column, a vertical guide rail is arranged on one side of the installation column, a coil spring piece is arranged at the bottom of the other opposite side of the installation column, a first sliding block is connected to the vertical guide rail in a sliding mode, and a detection assembly sliding along with the first sliding block is arranged on the first sliding block. A first transmission assembly for driving the first driving sliding block to slide is arranged on the mounting column, a pulley block and a traction rope in sliding fit with the pulley block are arranged at the top of the mounting column, one end of the traction rope is connected with the first sliding block, and the other end of the traction rope is connected with a coil spring piece; the utility model further provides a measuring instrument provided with the lifting detection structure. According to the utility model, the inertia generated when the detection assembly slides to a designated position is avoided, so that the detection is more accurate and stable.

The embodiment of the invention provides a motor vehicle obstacle height detection method and device and a computer readable storage medium. The method comprises the steps that detection instructions are sent to three ultrasonic radars on a motor vehicle to control the three ultrasonic radars installed on the motor vehicle to respectively send waves once according to a preset sequence to detect obstacles in front of the driving direction; calculating the actual detection distance of the obstacle relative to the corresponding ultrasonic radar; a first actual vertical distance D1 of the obstacle relative to the plane where the three ultrasonic radars are located and a second actual vertical distance D2 of the obstacle relative to the connecting line of the two ultrasonic radars with the same installation height are obtained through calculation; the actual relative height H1 of the two ultrasonic radars with the same obstacle relative installation height is obtained through calculation; and acquiring the actual installation height H2 of the two ultrasonic radars with the same installation height relative to the road surface on which the motor vehicle runs, and calculating the target height H3 of the obstacle relative to the road surface on which the motor vehicle runs by combining the actual installation height H2 and the actual relative height H1.

The application relates to the technical field of analytical detection, in particular to an electrochemical gas sensor for detecting linalool and a preparation method thereof. The preparation method is to prepare the electrochemical gas sensor after modifying a molecular imprinting film-zeolite imidazolate framework-8-multi-walled carbon nanotube-zinc oxide (MIP-ZIF-8-MWCNT-ZnO) composite material on the surface of an electrode. The electrochemical gas sensor can sensitively and accurately detect the content of linalool gas released by plants, realizes stable and accurate detection of linalool with high specificity and high sensitivity in a complex environment, and has a wide application prospect.

The utility model provides a light guide plate inspection device, which belongs to the technical field of light guide plate inspection, and comprises a concave connecting table, the top end of the concave connecting table is fixedly connected with a connecting plate, and the two ends of the connecting plate are fixedly connected with connecting frames; the rotating rod is rotationally connected into the two connecting frames; the connecting frame is fixedly connected to the circumferential surface of the rotating rod, the detection equipment can supply power to the light guide plate, the detection process is started, in the detection process, an operator only needs to slightly rotate a threaded button to enable the threaded button to move out of an internal thread of a threaded sleeve, the action can drive the threaded sleeve to move, the rotating rod is further rotated, and therefore the connecting frame is driven to incline; the angle of the connecting frame can be adjusted according to actual requirements, and it is ensured that detection of the light guide plate is more efficient and comprehensive.

The utility model provides a computer rotating shaft dimension detection mechanism, which relates to the technical field of rotating shaft dimension detection, and comprises a detection table, a left fixed plate and a right movable plate, a left baffle plate is fixed at the left end of the upper end surface of the detection table, and a first left linear guide rail is arranged at the left part of the front side surface of the left fixed plate; a first left linear guide rail is arranged on the left portion of the front side face of the left fixing plate, a first left clamping structure is slidably connected to the first left linear guide rail, a first right linear guide rail is arranged on the right portion of the front side face of the left fixing plate, and a first right clamping structure is slidably connected to the first right linear guide rail. A second left linear guide rail is arranged on the left portion of the front side face of the right moving plate, and a second left clamping structure is slidably connected to the second left linear guide rail. The front end and the rear end of the computer rotating shaft can be conveniently and stably clamped, the computer rotating shaft is kept straight and stable, tilting is avoided, detection is more accurate, stable and reliable, and detection is safer and safer.

The invention discloses a performance detection device for a mobile phone data cable, and relates to the technical field of mobile phone data cable performance detection.The performance detection device comprises a bottom plate and a first supporting plate arranged at the top of the bottom plate; and the second supporting plate is arranged on the bottom plate, the height of the second supporting plate is lower than that of the bottom plate, and an elastic piece is formed by connecting a plurality of first supporting plates and the second supporting plate. Two ends of a mobile phone data line are placed in the placing groove after being electrified and are fixed by the mounting rod, the reset spring and the clamping block, and the single-chip microcomputer regulates the telescopic end of the electric telescopic rod in place; the electromagnet is electrified to attract the iron block to move towards the center of the bottom plate, the elastic piece formed by the first supporting plate and the second supporting plate is extruded to reduce the included angle, and the data line between the two plates is bent to detect the bending degree of each part. And after the electromagnet is powered off, the elastic piece made of spring steel automatically resets, and the detection is performed repeatedly. And if the data line is damaged if power-on cannot be carried out during detection, multi-position simultaneous detection can be realized, the detection time is shortened, and the efficiency is improved.

A construction method of a lightweight target detection network adapted to a dark light scene comprises the steps of construction of a training set, a verification set and a test set and training and verification of a model, and the model training process comprises the steps that S1, an original image F passes through two convolution layers in sequence to eliminate redundant information, and a feature map F1 and a feature map F2 are obtained; s2, the original image F, the feature map F1 and the feature map F2 are input into a feature enhancement network in parallel for semantic information coding, and output feature maps O, O1 and O2 on three paths are obtained; s3, the output feature map O2 and the output feature map O1 are subjected to channel dimension splicing through a layer of up-sampling network, the channel dimension is adjusted through one-time up-sampling, and a spliced convolution feature map is obtained; carrying out element addition on the output feature map O and the spliced convolution feature map, and decoding to obtain an image-enhanced intermediate image; and S4, performing feature extraction on the intermediate image by adopting MobileViT, fusing the extracted feature information of different scales, inputting the fused feature information into a detection head, and predicting a detection result by a network.

The utility model belongs to the technical field of button cell detection equipment, and particularly relates to a button cell tray stacking, detecting and sorting component which comprises a tray separating mechanism, a conveying belt and a detection camera. The detection camera is arranged above the conveying belt corresponding to the downstream of the tray separation mechanism, a tray storage groove is formed below the tray separation mechanism, the tray separation mechanism comprises an electromagnet plate, a lifting module is connected to the upper portion of the electromagnet plate, and the lifting module is installed on a translation sliding table; the translation sliding table is in driving connection with a translation push rod, and telescopic clamping jaws are symmetrically arranged on the side face of the electromagnet plate. The detection equipment provided by the utility model can automatically separate the trays for storing the button cells one by one, convey the trays to the automatic detection equipment and then output the trays, the working efficiency is high, the detection cost is effectively reduced, and the detection accuracy is improved.

The invention, which belongs to the technical field of the sensor, discloses a micro-current detection sensor circuit comprising a coil L1 through which a device to be detected passes; the short circuit prevention resistor R1 is connected with the coil L1 in series; the FB modulation circuit is connected to the two ends of the coil L1 and the short circuit prevention resistor R1 in series, and the FB modulation circuit is used for modulating a current signal of a to-be-tested device to the coil L1; and the signal processing circuit is connected between the coil L1 and the short circuit prevention resistor R1 and is used for detecting a voltage value corresponding to the current flowing into the coil L1 and outputting the voltage value so as to determine the current flowing into the coil L1 according to the voltage value. According to the circuit, the double operational amplifier circuits are adopted for detecting and outputting the voltage, output voltage data are not affected by a power supply VDD, error correction can be conducted on the detected voltage, the anti-interference capacity is improved, and the fault-tolerant rate, the stability and the reliability are high.

This utility model discloses a rapid testing fixture for upper protective plate products, relating to the field of fixture testing technology. It includes a base, with a protective plate workpiece positioned on top of the base. Support mechanisms one are connected to both ends of the protective plate workpiece and the base, and another support mechanism two is connected to the middle of the protective plate workpiece and the base. A through-hole for assisting in its fixation is provided in the middle of the base. This utility model, by optimizing the fixing process and using an external testing instrument, enables the protective plate workpiece to be quickly and stably positioned and automatically complete multi-segment fixed-point scanning, reducing manual errors, ensuring stable and accurate testing, and significantly improving the efficiency and reliability of batch testing.

The utility model belongs to the technical field of shaft product detection equipment, and relates to a contact type device for detecting the outer diameter of a shaft, which comprises a bottom plate (222), two clamping mechanisms and a V-shaped block (211) for placing a shaft product, the two clamping mechanisms are mounted on the bottom plate through a clamping seat, and the clamping seat comprises a bearing (006), a bearing seat (219) and a rotating shaft (221); the clamping mechanism comprises a contact type displacement sensor (001), a duplex cylinder (002), a pull-down block (218), clamping blocks (216, 217), a guide shaft (212) and a measuring seat (225); wherein the measuring seat is fixed on the rotating shaft, the V-shaped block is provided with an opening for the guide shaft to stretch out and draw back, and the axial direction of the V-shaped block is perpendicular to the axial direction of the guide shaft. According to the utility model, the accuracy of outer diameter detection of shaft products is improved, and the device can be compatible with various shafts with different diameters and is used for detection of various diameters.

This utility model relates to the field of battery cell manufacturing technology and discloses a testing device, including a conveying mechanism, a positioning mechanism, and a visual inspection mechanism. The conveying mechanism includes a conveyor belt for conveying battery cells, each having a electrolyte inlet. The positioning mechanism is located on at least one side of the conveying mechanism and is used to fix the battery cells. The visual inspection mechanism includes a visual inspection device located on one side of the positioning mechanism. The visual inspection device is configured to inspect the electrolyte inlet of the battery cell fixed to the positioning mechanism to obtain the electrolyte residue status at the inlet. The testing device provided by this utility model, through the conveyor belt, positioning mechanism, and visual inspection device, can achieve integrated and automated conveying, positioning, and visual inspection of battery cells, reducing reliance on manual labor, lowering production costs, and helping to improve the yield rate of battery cells.

The utility model discloses an electric kettle for a tea bar machine, which comprises a kettle body and a connector arranged at the bottom of the kettle body, a water level detection piece is arranged on the side wall of the kettle body, a water inlet cylinder for feeding water into the kettle body is arranged in the connector, and the electric kettle further comprises an anti-blocking water outlet column with a hollow interior, the two ends of the anti-blocking water outlet column are the water inlet end and the water outlet end respectively, the water inlet end is connected with the water inlet cylinder, and the water outlet end extends upwards in the kettle body and is lower than the water level detection piece. According to the electric kettle, the technical problem that the water inlet of the bottom connector is too low, so that tea stains or tea water foreign matter is likely to block the water inlet is solved, and normal water inflow of the electric kettle is ensured; false triggering of the water level detection piece caused by water flow spraying or splashing to the water level detection piece in the water outlet process of the water outlet end is avoided as much as possible, and stable and accurate detection of the water level detection piece is ensured.

The invention belongs to the technical field of chemical analysis and detection, and particularly relates to a method for distinguishing fatty alcohol-polyoxyethylene ether carboxylic acid prepared by an oxidation method and fatty alcohol-polyoxyethylene ether carboxylic acid prepared by a carboxymethylation method. According to the principle, the fatty alcohol-polyoxyethylene ether carboxylic acid product prepared by using two methods has different residual impurities, and the content of monochloroacetic acid and chloride ion impurities is determined by using an ion chromatography so as to identify the fatty alcohol-polyoxyethylene ether carboxylic acid product. The method is easy and convenient to operate, high in accuracy and precision and good in repeatability, and reliable technical support is provided for quality control and application and popularization of fatty alcohol-polyoxyethylene ether carboxylic acid products.

The application relates to a dual-wavelength impurity detection photoelectric sensor and a cotton carding machine impurity dropping system. The photoelectric sensor comprises a transmitting module for transmitting first-wavelength light and second-wavelength light for irradiating a measured cotton ball; a receiving module for receiving the first-wavelength light and the second-wavelength light reflected by the measured cotton ball and converting the first-wavelength light and the second-wavelength light into first voltage signals and second voltage signals respectively; and a signal processing module connected to the output end of the receiving module and used for calculating the impurity content of the measured cotton ball according to the first voltage signals and the second voltage signals and combining a preset impurity content mathematical model. The application can realize real-time and high-precision impurity content detection.