64results about How to "Simple way of judging" patented technology

The invention provides a monitoring method for running safety of an electric vehicle. The method comprises steps as follows: firstly, determining the torque requirement, and then calculating the power requirement for meeting the torque requirement; secondarily, calculating and taking one or more kinds of actual torque and/or one or more kinds of nominal torque of a current electric drive system as a torque parameter, and then calculating and taking one or more kinds of actual power of the electric drive system as a power parameter; finally, comparing the torque requirement with the torque parameter and/or comparing the power requirement with the power parameter for failure judgment, so that the running safety of the electric vehicle is monitored. The safety performance of the vehicle is judged by using two characteristics, namely, torque and power, problems that only the torque characteristic is used, the judging method is single and erroneous judgment and missing judgment can be caused easily in the prior art are solved, the vehicle safety is monitored by using the power characteristic and the torque characteristic, multi-aspect redundancy check can be performed by using various signals, the failure detection sensitivity is increased, and the detection credibility is increased through mutual check.

The invention discloses a robot motion planning method for searching to identify multi-objective tasks by facing man-machine collaboration. The robot motion planning method includes that judgment about whether maximum working load is exceeded or not is performed when a task set is changed, a fixed time interval is not adopted, unnecessary waiting time is reduced, and efficiency is improved; when the judgment about whether the maximum working load is exceeded or not is performed, judgment about whether working load is exceeded or not is performed according to time that moving robots reach suspected target observation points planned by the robots, and the judgment mode is quite simple and efficient. When paths are re-planned for the robots, time for an operator to complete target identification is needed; the time for the operator to complete target identification task is uncertain, so that target identification task completion time of the operator is created as random models, probability distribution function of the target identification task completion time of the operator is established in advance, and rationality of path planning is guaranteed.

This invention discloses one general digital image invisible information testing method, wherein, the original images without invisible information is different to the one with images through quantities attack of varying degrees of statistics variable. The method uses the wavelet analysis system statistic variable as training sample and uses one kind of vector as divider to identify the multiple invisible images.

The present invention relates to the field of image identification, especially to an oblique character determination method in image identification. In the image character identification, the coordinate points of intersection points crossed with character strokes at left and right sides of a row vector are extracted through selection of the row vector; the intersection points at the left and right sides are taken as origins to respectively track the edge points of corresponding character strokes in the upper left and upper right directions, and the tracking results are respectively stored in a Vector1 and a Vector2; and the oblique direction of characters is determined through comparing the number of two types of elements, and the minimum oblique angle in the larger type is taken as the oblique angle of characters. According to the invention, the calculated amount of oblique angle determination is small, the accuracy of a determination result is high, and the timeliness is good. On the basis of determination of the character oblique direction and angle, the oblique character determination method in image identification solves the problem of character cutting and has a wide application prospect in the image character identification through rectification of oblique characters in an image by an affine transformation.

The present invention discloses a shoes trying on system, and solves problems that three-dimensional shoes trying on cannot understand the texture of the shoes and the time consumption of offline shoes trying on is long. The key points of the technical scheme are that the system comprises: a foot three-dimensional scanning device, for acquiring three-dimensional foot data and storing the three-dimensional foot into a foot-type database; a control terminal, for retrieving the three-dimensional foot data in the foot-type database and three-dimensional shoe-type data in a shoe-type database, comparing the three-dimensional foot data with the three-dimensional shoe-type data, and pushing shoes suitable for the three-dimensional foot data according the fitness degree; and a mobile terminal, for, according to the shoes pushed by the control terminal, guiding the purchaser to a physical store to try on the corresponding shoes. According to the shoes trying on system, virtual shoes trying on can be performed, and after the purchaser selects the required shoes through the virtual shoes trying on, the purchaser is guided to the physical store to try on the physical shoes, so that shoes trying on efficiency is improved and customer experience is ensured.

The invention belongs to the technical field of display. The invention discloses a quick judgment method for split screen Mura. The method comprises the following steps: selecting a strip-shaped areanear a center line of a to-be-detected image as a detection area, sliding in the detection area through a sliding window to obtain a gray mean value difference value, comparing the maximum value of the difference value with a set threshold value, if the maximum value of the difference value is greater than the threshold value, judging that the split screen Mura is abnormal, or else judging that the display screen is normal. According to the method, the split-screen Mura defect of the display screen can be simply and efficiently judged, and the detection time is shortened while the judgment accuracy requirement of a user is met.

The invention relates to an audio and video information processing method and device, an electronic device and a storage medium, and the method comprises the steps: obtaining the audio information andvideo information of an audio and video file; based on the time information of the audio information and the time information of the video information, performing feature fusion on the frequency spectrum features of the audio information and the video features of the video information to obtain fusion features; and judging whether the audio information and the video information are synchronous ornot based on the fusion features. According to the embodiment of the invention, the accuracy of judging whether the audio information and the video information are synchronized or not can be improved.

The embodiment of the invention discloses a Type-C interface protection circuit. The Type-C interface protection circuit comprises a Type-C interface, a comparator, a processor, a first voltage source and a second voltage source, wherein the Type-C interface comprises a grounding pin, and the processor comprises a GPIO pin, and the processor is used for stopping powering on the Type-C interface when the processor receives the low level signal through the GPIO pin, or powering on the Type-C interface when the processor receives the high level signal. Through adoption of the embodiment of the invention, the probability of electrochemical corrosion of the Type-C interface can be reduced, the service life of the Type-C interface is effectively prolonged, and the use reliability of the Type-C interface is effectively improved.

The invention relates to the technical field of building energy management systems, and aims to provide a holographic intelligent building energy-saving operation and maintenance management system based on a BIM model, which comprises an equipment module, a data acquisition module, a communication module and an operation and maintenance module, the system also includes the fault processing modulethat is connected to the operation and maintenance module and is used for processing faults of the equipment module; the operation and maintenance module acquires data information of the data acquisition module and performs analysis and judgment; when the judgment result of the operation and maintenance module is that the equipment has a fault, the operation and maintenance module automatically generates a fault processing scheme and sends a control signal to the fault processing module; and the fault processing module responds to the control signal of the operation and maintenance module andprocesses the equipment fault of the equipment module. The problems that an existing operation and maintenance management system is long in fault repairing time and large in loss are solved, and the invention has the effects that equipment fault repairing is automatically conducted, so that the fault recovery time is greatly shortened, and losses are reduced.

The invention relates to a special detection device for a 30-degree oblique hole on the upper cover of a gear pump, which includes a positioning sleeve and a measuring rod. An oblique measurement hole with an inclination angle of 30 degrees is made on the positioning sleeve. A gauge rod, the lower end of the detection rod extends to the outside of the oblique measurement hole, and a detection groove is made on the side wall of the middle part of the detection rod. The present invention is a kind of special detection equipment for the 30 degree oblique hole on the gear pump upper cover, which is used to detect the depth of the 30 degree oblique hole on the gear pump upper cover and the distance between the oblique hole and the reference plane. The device is based on the 30 degree oblique hole. The structure and shape are specially designed, professional and pertinent. Therefore, using this equipment can simplify the measurement process, reduce the difficulty of measurement, speed up the measurement speed, improve the accuracy of measurement, and prevent unqualified products from entering the market.

The invention discloses a portable magnetic proximity switch detection device, which comprises: a shell provided with a first accommodating cavity and a second accommodating cavity for placing a to-be-detected switch; a test magnet arranged in the first accommodating cavity and provided with a first position closest to the to-be-detected switch and a second position farthest from the to-be-detected switch, wherein the test magnet moves between the first position and the second position; and a detection circuit provided with a power supply, an indicating piece and a connecting plug for connecting the to-be-detected switch, wherein the power supply, the indicating piece and the connecting plugare connected in series. According to the invention, the portable magnetic proximity switch detection device is ingenious in structure, small in size and easy to operate; a to-be-detected switch can be conveniently installed in a semi-closed second accommodating cavity, a pressing type moving piece capable of automatically returning is used in cooperation with a first accommodating cavity with a limiting function to replace the lead screw transmission mode of a traditional detection platform and the fixing mode of a detection tool, and the moving path and the moving distance of a detection magnet are limited, so that the detection magnet moves more conveniently and quickly.

The invention discloses a bobbin thread winding method, which includes winding a first section of a bobbin thread on a bobbin thread winding column clockwise or counterclockwise, wherein the first section has a first preset length; pressing the tail end of the first section wound on the winding column; and continuously winding the bobbin thread on the winding column in the opposite direction until the winding cavity of the bobbin is fully wound with the bobbin thread. The winding method can realize bidirectional winding of the bobbin, and thus when the bobbin is used, whether the bobbin thread is about to run out can be judged by whether the rotating direction of the bobbin is changed; and through the first preset length of the first section, accurate bobbin thread allowance can be obtained, so as to facilitate subsequent operations, such as continuously sewing the needle number corresponding to the bobbin thread allowance or replacing a new full bobbin after cutting the bobbin thread. The invention further discloses a winding device, which can realize the winding method of the bobbin thread, of the bobbin thread.

The invention relates to a vehicle-mounted lightweight pavement performance detection device, which comprises a light source arranged at the front end of a detection vehicle and a first camera arranged on the detection vehicle, the detection vehicle is also provided with a GPS and a processor, and the processor is respectively connected with the camera and the GPS. The device is simple in structure, the position of the damaged road surface is judged by collecting the shot picture information, so that the performance state of the road surface is judged, the judgment mode is simple, rapid and accurate, and powerful reference data are provided for road maintenance.

The invention discloses an obstacle detection method and device, a storage medium and a mobile robot. The obstacle detection method specifically comprises the steps that an advancing area image shot by a declination camera device installed on an AGV is acquired; determining the lower part in the advancing area image as a reference area; determining the rest part above the reference area in the advancing area image as a detection area; detecting an object region and a shadow region in the detection region; when it is detected that the object area and the shadow area exist in the detection areaat the same time, whether the position relation between the object area and the shadow area is matched with the light projection direction or not is detected; and when the position relationship between the object area and the shadow area is matched with the light projection direction, marking the object area as a suspected obstacle. According to the embodiment of the invention, the position information of the three-dimensional obstacle is efficiently judged by analyzing the acquired advancing area image, so that a large amount of data is prevented from being used for calculation or training, and relatively high calculation efficiency is realized.

The invention discloses a motorcycle chain tightener detection device comprising a base, a column, a variable frequency motor and a decelerator which is connected with the main shaft of the variable frequency motor. The motorcycle chain tightener detection device is characterized by further comprising a fixedly arranged micro-range torque sensor. One end shaft of the micro-range torque sensor is connected with the output shaft of the decelerator, and the other end shaft of the micro-range torque sensor is connected with a connecting shaft. A key poking sheet is connected on the connecting shaft. The column is fixedly provided with a load guide plate, a detection installing plate and a workpiece installing plate which are arranged from the top to the bottom in turn. A longitudinal pressing rod slidably penetrates through the load guide plate. A counterweight and a pressing disc are fixedly arranged on the pressing rod. A dial indicator is arranged on the detection installing plate. The pressing disc is arranged above the measuring head of the dial indicator. A longitudinal through hole is arranged on the workpiece installing plate. The key poking sheet penetrates through the through hole and is arranged above the workpiece installing plate. Whether the torque value of the plane volute spiral spring meets the requirements can be accurately detected so that the performance of the tightener can be guaranteed, the judgment mode is simple and visual and the detection efficiency can be enhanced.

The invention discloses a numerical control stone cutting machine, a cutting tool bit and a control method of the cutting tool bit. The stone cutting machine comprises a rack, a tool bit mounting frame arranged on the rack and a driving device for driving the tool bit mounting frame to act; the cutting tool bit comprises a cutting saw blade, a tool cover arranged on the tool bit mounting frame andused for mounting the cutting saw blade, a suction cup arranged on the tool cover and a pneumatic control device connected with the suction cup to control the suction cup to work; the suction cup comprises a plurality of adsorption ports formed at intervals and rubber rings arranged on the peripheries of the adsorption ports in a surrounding mode; the pneumatic control device is correspondingly connected with the plurality of adsorption ports so as to correspondingly control the plurality of adsorption ports to work; the pneumatic control device comprises an air source, a main air path connected with the air source, a plurality of negative pressure generation assemblies which are connected with the main air path and are in one-to-one correspondence with a plurality of adsorption ports, anegative pressure air path connected between the negative pressure generation assemblies and the adsorption ports, a negative pressure meter arranged on the negative pressure air path, and a controller connected with the negative pressure meter; and the controller receives and processes data fed back by the negative pressure meter to judge whether the suction cup adsorbs the stone or not.