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 Bluetooth equipment connecting method and Bluetooth equipment. The method comprises the following steps: first Bluetooth equipment transmits a light signal output by second Bluetooth equipment, and decodes the light signal to obtain decoded data; the first Bluetooth equipment judges whether the light signal is valid or not according to a preset verification strategy and the decoded data; if the light signal is valid, the first Bluetooth equipment acquires the Bluetooth address of the second Bluetooth equipment from the decoded data; the first Bluetooth equipment is connected with the second Bluetooth equipment according to the Bluetooth address of the second Bluetooth equipment. Slave equipment is used for transmitting the own Bluetooth address by using a light signal, and master equipment is used for decoding the received valid light signal to obtain the Bluetooth address of the slave equipment and entering an equipment connecting process directly according to the Bluetooth address, thereby avoiding a time-consuming equipment searching process, and realizing rapid connection among Bluetooth equipment.

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 invention provides a data processing method and a mobile terminal. The data processing method comprises the steps of obtaining an acceleration data component corresponding to a preset number of coordinate axes acquired by an acceleration sensor of the mobile terminal in N time windows in a preset time; according to the acceleration data component corresponding to a preset number of coordinate axes in the N time windows, determining a linear correlation between any two coordinate axes; according to the linear correlation between any two coordinate axes, determining a motion state of the mobile terminal in the preset time. The data processing method is easy to compute, step counting mistakes of the mobile terminal can be prevented, the method has reference significance for motion scene recognition and user step mode classification, and the user experience can be promoted at the same time.

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 discloses a rotating blade type steering engine fault detecting device and method, and belongs to the field of marine mechanical equipment. The detecting device comprises a detecting module and a logic module, wherein the detecting module is used for detecting multiple parameters; the multiple parameters comprise real-time pressure of an oil outlet of a hydraulic pump and real-time pressure of a helm shifting mechanism; the logic module is used for detecting faults of a rotating blade type steering engine according to the multiple parameters; when the real-time pressure of the oil outlet of the hydraulic pump is lower than an oil outlet pressure set value, the hydraulic pump is broken down; and when the hydraulic pump is not broken down, and the real-time pressure of the helmshifting mechanism is lower than a helm shifting mechanism pressure set value, a hydraulic pipeline or a valve piece of the helm shifting mechanism is broken down. The detecting device is simple in judgment mode, can be convenient for workers to quickly determine broken parts in the rotating blade type steering engine, and is convenient to maintain.

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 the technical field of hydrogen fuel cell control, in particular to an abnormal out-of-control control circuit of a hydrogen fuel automobile motor and a control method thereof. The system comprises a VCU, an FCU, a BMS, a PDU and an MCU. The output terminals of the BMS and the FCU are connected with the input terminal of the PDU; the output terminal of the PDU is connectedwith a power supply input terminal of the MCU; a first contactor and a second contactor are arranged in front of the output terminals of the BMS and the FCU respectively, a third contactor is arranged between the input terminal and the output terminal of the PDU, and control signal input terminals of the first contactor, the second contactor and the third contactor are all connected with a control signal output terminal of the VCU. The hydrogen fuel automobile motor abnormal out-of-control control circuit based on the vehicle control unit and contactor control is arranged, and the circuit structure is simple. Based on the control strategy of the circuit, damage to the FCU, the BMS and the PDU can be reduced as much as possible on the premise that vehicle safety and personal safety can beprotected when the electric drive system is out of control.

The invention relates to the technical field of automobile control methods, in particular to a driving style judgment and recognition method. The method comprises the following steps: acquiring a vehicle speed signal and an accelerator pedal opening signal of a vehicle, starting to sample the accelerator opening signal of the vehicle when a sampling condition is met, and completing a period of sampling after accumulated sampling time reaches a set value; dividing the accelerator opening degree and the accelerator opening degree change rate of each sampling point of the vehicle in the accumulative sampling time through the calibrated style curve graph, and calculating the proportions of the sampling points in various driving styles in the style curve graph to determine a final driving style, wherein the style curve graph takes the accelerator opening degree as an abscissa and the accelerator opening degree change rate as an ordinate, and comprises a plurality of style calibration curves obtained through calibration. The judgment result can reflect the real driving mode of the vehicle, and vehicle power resources are reasonably saved.

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 an intelligent state judgment and mode switching method for a high-voltage direct-hanging type energy storage system. According to the system, different states such as voltagedrop caused by an external power grid fault, SOC balance degree deviation of an internal battery pack and over-low SOC caused by over-discharge of the battery pack severely influence safe and stable operation of the high-voltage direct-hanging type energy storage system. Therefore, a factor [epsilon] representing the voltage drop amplitude of the power grid, a factor [tau] representing the SOC balance degree of the energy storage battery pack and a factor [rho] representing the SOC discharge depth of the energy storage battery pack are defined for multi-factor system state function derivation;the invention provides an intelligent state judgment and mode switching method for a high-voltage direct-hanging type energy storage system, and the system operation reliability is improved.

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 the technical field of angle control systems and methods, in particular to a system and a method for controlling an exhaust valve angle of a methanol fuel cell. The control system comprises a controller, a stepping device, an electric reactor reaction waste gas outlet and an oxygen transmission data acquisition device; the controller controls a displacement of the steppingdevice through data obtained by the oxygen transmission data acquisition device; the stepping device is in contact with the electric reactor reaction waste gas outlet; and the difference of exhaust valve angles affects an oxygen content value E of tail gas emission in the electric reactor reaction waste gas outlet, wherein the oxygen content value E of the tail gas emission is collected through the oxygen transmission data acquisition device. The control method comprises the steps that the oxygen content value E is controlled to be in a range defined in the description. According to the control system provided by the invention, the controller can be used for controlling the stepping device through the data of the oxygen content value E in an oxygen sensor so as to control the valve angleof tail gas of the methanol fuel cell.

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 an automatic drill rod catching and releasing system and method for a joint crane. The system comprises a joint crane body and grab bar control equipment; an output end of the grab bar control equipment is connected with the joint crane body; the joint crane body comprises a main body rotator (1), a main arm (2), an auxiliary arm (3) and a holder (4); one end of the main arm (2) is hinged onto the main body rotator (1), and the other end of the main arm (2) is hinged to the front end of the auxiliary arm (3); and the tail end of the auxiliary arm (3) is equipped with the holder (4) capable of rotating along the central shaft of the auxiliary arm (3). The grab bar control equipment comprises an industrial camera and an upper controller, wherein the upper controller is used for realizing drill rod catching and releasing control according to an image shot by the industrial camera. According to the automatic drill rod catching and releasing system and method provided by the invention, positioning precision is high, positioning time is short, ability requirements on a crane operator are reduced, and operating efficiency is improved.

The application discloses a power cycle testing method and device for an intelligent power module. The intelligent power module comprises a constant current source and a plurality of bridges connectedin parallel at two ends of the constant current source, wherein the bridge where a tested switch device is positioned is connected with the other bridge through inductance; and the first end of the bridge where the tested switch device is connected with the first end of the other bridge through a first switch. The method includes controlling the tested switch device in the bridge where the testedswitch device is positioned and the switch device in the other bridge to be in an alternating switching state, so as to enable the current flowing through the tested switch device to be a sinusoidalcurrent signal; when the junction temperature of the tested switch device is equal to the first set temperature, turning off the first switch; cooling the tested switch device; and when the junction temperature of the tested switch device is equal to the second set temperature, closing the first switch, and returning to the step of controlling the tested switch device in the bridge where the tested switch device is positioned and the switch device in the other bridge to be in the alternating switch state. Therefore, the actual working condition of the intelligent power module can be accuratelyand effectively simulated.

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 bullet screen behavior abnormity detection method, a storage medium, electronic equipment and a system, and relates to the field of live broadcast risk control. The method comprises the steps: carrying out the statistics of all bullet screen behavior data of a live broadcast watching user account through taking a day as a unit; calculating a chi-square value ch2 accordingto each statistic behavior data; and if the calculated chi-square value is greater than the set threshold, pausing the use of the current user account, and if the calculated chi-square value is not greater than the set threshold, not performing processing. The behavior data comprises the number of sent bullet screens and the number of sent bullet screen rooms; and counting the bullet screen sending number of the user account every day and the bullet screen room sending number of the user account every day by taking the day as a unit. The abnormal account number can be accurately judged, the judgment mode is simple, and the cost is low.

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.

The invention discloses a flushing control method and system of a toilet bowl and a urinal. The flushing control method comprises the following steps: 1) continuously detecting a human body distance signal through a millimeter wave sensing module; 2) judging whether a human body enters an effective sensing area according to the human body distance signal, if so, judging that a human body target enters the effective sensing area, and entering a step 3), and if not, returning to the step 1); 3) judging whether the time duration of continuously detecting the human body distance signal in the effective sensing area is greater than or equal to T1, if so, judging that the human body target is using the urinal, and entering a step 4), otherwise, judging the target as an invalid target, and ending; and 4) judging whether the time duration of continuously detecting the human body distance signal in the effective sensing area is greater than or equal to T2, if so, judging that the human body target leaves, and starting flushing, and if not, judging that the human body target does not leave, and repeating the step. According to the invention, the interference target can be effectively identified, and the error impact phenomenon caused by long-time static dynamic detection of the human body target can be overcome.

The invention relates to a rope skipping coordination evaluation method and device based on the cooperation of a six-axis gyroscope and a Hall sensor, and the method comprises the steps: fitting sine curves of a detected rope skipping ring in X and Z directions through numerical calculation; calculating the phase difference of the sine curves in the X and Z directions of the detected rope skipping ring; judging the coordination score of the detected rope skipping ring through the phase difference; and calculating the average of the coordination scores of all detected skipping rope rings, which is the final overall coordination score. The six-axis gyroscope is additionally arranged on an existing skipping rope handle adopting the Hall chip technology and used for detecting the six-axis gyroscope data of the handle during rope skipping, the coordination is judged through the phase difference in the X direction and the Z direction, the judgment mode is simple, the cost is low, a user can conveniently know the body coordination during exercise, the rope skipping speed of the user can be increased, the rope skipping actions of the user can be standardized, and the possibility of exercise injuries is reduced.