34results about How to "Calibration automatic" patented technology

The invention provides a projection image correction method and a projection device. The method comprises the steps of projecting a correction image of which four angles are equipped with correction identification points in a projection screen; moving the correction identification points in the correction image to the four angles of the projection screen; obtaining the coordinate values of the correction identification points in the correction image after movement; and projecting the coordinate values of the four vertex angles of the original projection image to the coordinates of the correction identification points according to an image geometric correction algorithm and carrying out image projection display according to the coordinate values after projection, thereby correcting the projection image automatically by the projection device. According to the method, the system and the projection device, the image geometric correction is realized by the low cost method without a camera or an accelerometer, the projection image and the projection screen can be matched precisely, the intelligence of the projection device is improved, and moreover, convenience is provided for a user.

The present invention is one electronic timer and time correcting equipment, system and method. The electronic timer includes simple and low-power consumption error correcting circuit for raising time accuracy. The error correcting data are calculated by outer equipment based on the data the electronic timer produces, the stored data and outer standard time data, and is stored in the memory of the electronic timer. Thus, the microprocessor of the electronic timer can correct time without needing great amount of calculation.

The invention discloses a correction method for a patent certificate image with any inclination angle. The correction method comprises the following steps: graying the input patent certificate image and then performing Gaussian filter; performing Canny edge detection on the filtered image to obtain a basic skeleton line of the certificate image; acquiring the inclination angle of the skeleton line by using Hough transformation; obtaining the inclination angle of the first correction according to the principle that the minority is subordinate to the majority and then rotating the image; next, judging the inclination angle of the second correction according to the position of a round stamp in the certificate image corrected for the first time; and rotating the image according to the inclination angle to finally finish the inclination correction of the patent certificate image.

The embodiment of the invention provides a method for calibrating a pedal open degree value, a calibrating device and a vehicle. The method comprises the following steps that after a vehicle is started, the calibrating device arranged in the vehicle obtains a first open degree value from a memory, wherein the first open degree value is the preset minimum open degree value of a pedal; the calibrating device detects a second open degree value through a sensor of the pedal, wherein the second open degree value is the current minimum open degree value of the pedal; and the calibrating device uses the second open degree value to calibrate the first open degree value. According to the embodiment, when the current minimum open degree value of the pedal is different from the preset minimum open degree value of the pedal, the current open degree value of the pedal can be used for calibrating the preset minimum open degree value of the pedal so that the vehicle is controlled according to the calibrated minimum open degree value; thus the pedal calibration can be automatically performed without artificial participation; and the pedal calibration cost is reduced.

The invention provides a continuous background correction method based on an interpolation method in laser-induced breakdown spectroscopy. The continuous background correction method comprises the following steps: S1, collecting a laser-induced breakdown spectrum with continuous background interference, acquiring all minimum value points of the spectral intensity value, and sorting the minimum value points according to an ascending sequence of the wavelength; S2, defining a window function; S3, sorting N minimum value points in the window function according to an ascending sequence of the spectral intensity value, and selecting and storing the previous M minimum value points; sliding the window function from a first minimum value point of spectral data, and sorting and selecting once after each sliding operation; after traversing all the minimum value points, using selected points as a new minimum value point set; S4, performing interpolation calculation on the new minimum value points, and using interpolation results for estimating continuous backgrounds; S5, according to the estimated continuous backgrounds, calculating signal-to-background ratios, and using the continuous background, estimated when the signal-to-background ratio is maximum, as a final continuous background estimation value. By the continuous background correction method, the performance of spectroscopic analysis can be improved.

The invention provides an interest point correction method, a device, equipment and a computer readable storage medium. The method comprises the steps of determining all navigation data taking a to-be-corrected interest point as an end point for each to-be-corrected interest point; acquiring navigation end points corresponding to all the navigation data; and correcting the coordinates of the interest point to be corrected according to the navigation end points corresponding to all the navigation data. According to the navigation data, the correct position corresponding to the to-be-corrected interest point is acquired and corrected, so that the coordinate of the to-be-corrected interest point can be automatically and accurately corrected. Therefore, an accurate interest point coordinate can be provided for the user, and the user experience is improved.

Embodiments of the invention provide a wearable device time calibration method and a wearable device to implement automatic correction of a local time of a wearable device. The method according to theembodiment of the invention includes the steps of acquiring a first standard time T1, and synchronizing a local time of the wearable device at the moment according to the T1; acquiring a second standard time T2, and calculating a difference (T2-t2) between the T2 and a local time t2 of the wearable device at the moment and a difference (T2-T1) between T2 and T1; when the (T2-t2) and the (T2-T1) satisfy a preset correction condition, calculating the compensation time corresponding to the T2 according to the (T2-t2) and the (T2-T1); and synchronizing the local time of the wearable device at themoment according to the T2, and after the T2, periodically correcting the local time of the wearable device according to the compensation time corresponding to the T2, so that the local time of the wearable device is consistent with the standard time.

The invention discloses a device for automatically calibrating parameters of regulators and relates to a device for simultaneously carrying out automatic calibration on a plurality of regulators. The device provided by the invention comprises a calibration operating platform and an assistant operating platform. The device is characterized by also comprising a plurality of calibration modules which are arranged on the calibration operating platform and the assistant operating platform, each calibration module comprises a plurality of electrical devices or instrumentation devices, and the electrical devices or instrumentation devices are mutually connected in a patch-cord mode and a terminal strip connection mode. By using the device disclosed by the invention, the problems that in the prior art, multi-channel stable calibration signals can not be provided and the measurement error are caused by manual operation and numerical reading in the process of carrying out regulator calibration are solved. The calibration device disclosed by the invention integrates all devices on the calibration operating platform, and has no need of moving the instrumentation devices while carrying out different project calibrations; meanwhile, the device is simple in operation, convenient and flexible.

The invention relates to the technical field of fishing gig assembly, in particular to a fishing gig handle preassembly correction mechanism. The mechanism comprises a support plate, a pressing plate,a rotation driving plate and a detection mechanism. The support plate can be vertically and movably arranged through a first lifting mechanism, the pressing plate can be vertically and movably arranged over the support plate through a second lifting mechanism, a positioning area is formed between the pressing plate and the support plate, the rotation driving plate can rotate around the axis of the rotation driving plate and is arranged above the pressing plate, and the rotation driving plate also can be vertically and movably arranged through a third lifting mechanism. The detection mechanismcomprises two elastic pieces symmetrically arranged outside the positioning area, the ends, opposite to each other, of the two elastic pieces are each provided with a positioning ball, and the otherends of the two elastic pieces are each provided with a distance measuring sensor. When the elastic pieces are in a normal state, the positioning balls in the corresponding state can be located in thepositioning area, and two first guide rollers which are vertical are also symmetrically arranged outside the positioning area. A gig handle can be automatically corrected through the mechanism, and the use cost is further reduced for personnel .

The invention provides a verification device and a verification control method, and relates to the technical field of measuring instruments. The calibration device comprises a support and a movable assembly, the support is connected with the measuring equipment, the movable assembly is rotatably connected with the support, at least one calibration standard ball is installed on the movable assembly, and the calibration standard ball is used for calibrating a measuring head on the measuring equipment. The movable assembly is configured to rotate to avoid a working area of the measuring equipment when the measuring equipment is in a working state and rotate to a preset angle when the measuring equipment is in an idle state, so that the at least one calibration standard ball is located in the working area of the measuring equipment to calibrate a measuring head on the measuring equipment. Therefore, the checking device can selectively rotate to the working area of the measuring equipment according to the working state of the measuring equipment, so that the normal work of the measuring equipment is not influenced, manual carrying is not needed, the checking device is relatively intelligent, and the convenience of checking the measuring head is improved.

The present invention provides an automatic optical detection apparatus for PCB board production, and a detection method thereof. According to the present invention, image acquisition is performed, the ranges of placed PCB boards to be detected each time are determined (the points on the boundaries of PCB board images are led out to obtain mutually perpendicular straight lines, the straight lines intersect to delineate a rectangular frame, and the size of the rectangular frame is corresponding to the size of the PCB board), the elements to be detected, the item contents to be detected and the qualified thresholds to be detected thereof on the PCB board having the model are edited, the values are preset in equipment, the values can be directly called if the values of the PCB board having the model are preset, the contents to be detected are studied and the detection path to be detected is optimized and determined before the detection, and finally detection comparison in a one-by-one manner is performed. The technical scheme of the present invention is simple and reliable, and has high efficiency.