52results about How to "Timely detection of errors" patented technology

The embodiment of the invention discloses a method and device for calibrating a time display instrument. A network connection module is arranged in the time display instrument. The method comprises the following steps that when the appointed time display instrument needs to be calibrated, communication connection with a network terminal device is built through the network connection module; standard time information is obtained from the network terminal device through communication connection; time information displayed by the appointed time display instrument at present is obtained; the time information displayed at present is compared with the standard time information, and the time adjustment direction and amplitude information are determined; according to the time adjustment direction and the amplitude information, displayed time of the appointed time display instrument is adjusted. Through the method and device for calibrating the time display instrument, an error between the time displayed at present and standard time can be found in time, manual adjustment operation by a user is not needed, and the time display instrument can keep the same time as the standard time as much as possible.

The invention provides an electric energy meter error automatic checking method and an electric energy meter. The method comprises the following steps: an electric control selector switch receives a checking signal, and reference voltage and reference current output ends of a reference source circuit are connected with corresponding sampling channels; a metering chip carries out sampling on reference voltage and reference current to obtain a voltage sampling value A2 and a current sampling value B2; an MCU of the electric energy meter calculates a voltage difference value between the voltage sampling value A2 and a voltage preset value A1 as well as a current difference value between the current sampling value and a current preset value according to the voltage sampling value A2 and the current sampling value B2; the MCU compares the voltage difference value and voltage allowable deviation alpha as well as the current difference value and current allowable deviation beta to obtain comparison results; and the MCU obtains check results according to the comparison results: if the voltage difference value is smaller than or equal to the voltage allowable deviation and the current difference value is smaller than or equal to the current allowable deviation, the comparison result is that the electric energy meter is normal, and if the voltage difference value is larger than the voltage allowable deviation and/ or the current difference value is larger than the voltage allowable deviation, the comparison result is that the electric energy meter is abnormal.

The invention discloses a method and device for file management. The method comprises the steps that a compressed document is acquired according to a compressed document path designated by a user; an identification number and a QR code of the compressed document are generated, the compressed document and the corresponding identification number are uploaded to a server, so that the server can be requested to save the compressed document and establish a corresponding QR code link according to the identification number; a preset-format file corresponding to the compressed document is acquired, and a QR code is set in the preset-format file; and the preset-format file and the identification number are uploaded to the server, the server is then requested to save the preset-format file under the path of the compressed document, and a sub-link is established under the QR code link to target at the preset-format file, so that a user can acquire the preset-format file while scanning the QR code on a mobile terminal. According to the invention, the preset-format file can be saved in the server and checked on the mobile terminal; and the user can find mistakes in the paper file in time by comparing the paper file and the file in the mobile terminal.

The invention discloses a miniature embedded platform-based remote upgrading system and method, which meets the demands of high program update speed, function upgrading and the like of a miniature embedded platform. The system mainly comprises a remote control module, a communication transmission module, an embedded computing module and a power module. The method comprises the steps that 1, the remote control module establishes a software upgrading package according to an upgrading demand; 2, the remote control module identifies an embedded computing module ID and establishes a communication protocol between the remote control module and the embedded computing module; 3, through the communication transmission module, the remote control module sends an upgrading instruction to the embeddedcomputing module for enabling the embedded computing module to enter an upgrading standby state, and receives a response signal of the embedded computing module; 4, the embedded computing module receives the software upgrading package of the remote control module; and 5, online upgrading is performed. The problem that a packaging module cannot be timely upgraded is effectively solved, so that themaintainability and expansibility of the miniature embedded platform are improved.

The embodiment of the invention provides a calibration method and device for a FPGA plug-in storage. The method includes the following steps that an FPGA obtains first data and a first address corresponding to the first data, wherein the first data and the first address are written into the FPGA plug-in storage; a first address to be calibrated with the same digit with the first data is obtained according to the first address; XOR is performed on the first data and the first address to be calibrated, and a first XOR result is obtained; XOR is performed on the first XOR result and an initial calibration value, and a first calibration value is obtained. According to the calibration method and device for the FPGA plug-in storage, XOR is performed on the first data and the first address to be verified, XOR is performed on the XOR result and the initial calibration value, the calibration value is obtained, mixed calibration of the address and the data written into the FPGA plug-in storage is achieved, calibration of the data is finished, calibration of the address is also finished, and errors of the address can be found in time.

The invention discloses a high-precision three-dimensional sound field measurement system for medical ultrasonic equipment. The high-precision three-dimensional sound field measurement system comprises a hydrophone, an ultrasonic probe, a movable frame, a control module, a data acquisition device, a data processing module, a first motion driving module, a second motion driving module, an analog simulation system and a display device; the movable frame is detachably connected with a measurement tank, a three-axis motion positioning system, an ultrasonic probe fixture and a laser acquisition device fixture, the three-axis motion positioning system is detachably connected with a hydrophone fixture, the hydrophone fixture is detachably connected with a first laser, the ultrasonic probe fixtureis detachably connected with a second laser, and the laser acquisition device fixture is detachably connected with a laser acquisition device. The high-precision three-dimensional sound field measurement system effectively ensures the collimation of an acoustic axis of the ultrasonic probe and the axis alignment of the ultrasonic probe and the hydrophone, and can timely find an error of measurement data and check and correct the measurement system, thereby achieving quick and accurate measurement on the sound field of the ultrasonic equipment.

The invention discloses a distributed feeder automation system configuration method based on a master station. The method comprises the following steps: when an STU function upgrading or communicationinterface on a feeder changes, uploading an ICD file of a new STU to the master station; detecting the IP address of the STU has already existed in the IP table of an internal terminal by the masterstation without the need of updating the IP table of the terminal, guiding the ICD file of the STU into a device configuration tool, and generating an IID file; or, updating the IP table of the terminal instantly, and carrying out selective subscription according to functional service provided by the ICD file; guiding the generated IID file into a feeder configuration tool by the master station, calling an original FCD file from a configuration database, amending the original FCD file to generate the new FCD file to be guided into the device configuration tool, and uploading the FCD file to amonitoring background and baking up the FCD file in the configuration database; and downloading a corresponding CID file from the device configuration tool by the STU and the adjacent STU. The error of topological information can be discovered in time, the positioning error condition of a distributed FA system is avoided, and the method is more flexible and reliable.

The invention relates to a nuclear power plant offline fire alarm detection system. The system comprises a power supply conversion module, a charging card, a storage battery, on-site detection equipment, a loop card, a main controller, an operation panel and a gateway. An alternating current input terminal of the power supply conversion module is connected to an alternating current power supply line, and a direct current output terminal is electrically connected to an input terminal of the charging card. An output terminal of the charging card is connected to the loop card, the main controller, the operation panel and the gateway. An input and output switch terminal of the charging card is connected to the storage battery. The on-site detection equipment is successively connected to the loop card, the main controller, the operation panel and the gateway in a communication mode. The loop card is connected to the on-site detection equipment in a power supply mode. The system can be used for processing a complex fault generated in a nuclear power plant operation environment site, a fault reason can be rapidly found out, a fault problem is solved high-efficiently and a risk is controlled properly.

The invention discloses a method and device for constant value interaction of an information protection system and a constant value pre-warning system. The method includes the steps that a device list file needing constant value calling is sent to an application server in a safety II area through a web server in a safety III area; the application server analyzes the device list file according to a preset specification and generates corresponding calling commands; the application server calls constant values from a corresponding protection device in a sub-station supervisor in the safety II area according to the calling commands; the application server generates a constant value monofile from the operation constant values called from the corresponding protection device, the constant value monofile obtained after forward isolation is sent to the web server for storage and is acquired and processed by the constant value pre-warning system in the safety II area. Through the adoption of the implementation mode, labor can be saved, area codes of constant values in the protection device and errors in constant values of the areas can be found in time, pre-warning is conducted, and operation safety of operation devices of all levels can be guaranteed.

The invention discloses interactive teaching equipment for English teaching. The interactive teaching equipment comprises an electronic computer, the electronic computer selects one of a sound box ora student end headset for audio playing, teaching interactive conversation can be performed between a teacher end headset and the student end headset, spoken language test software is installed in theelectronic computer, and the spoken language test software evaluates spoken language pronunciation of the student end headset and identifies wrong pronunciation; and the student end earphone is connected with the smart phone through the Bluetooth transmission module, and transmits the recorded audio in the corresponding time period to the smart phone. According to the invention, an interactive English teaching mode is adopted, spoken language dialogues are carried out among teachers and students and among students through a dialogue group of the computer system assembly, spoken language pronunciation is evaluated through intelligent software, errors in the spoken language pronunciation process can be found in time and can be sent to a smart phone, and therefore the students can know spoken language defects of themselves in a targeted mode and correct the spoken language defects in time.

The invention discloses a single-point progressive forming machine for the inner circle of a tubular part. The single-point progressive forming machine comprises a clamping mechanism, a drive mechanism, a tool head moving mechanism and a control device. A first stepping motor is connected with a reducer. A transmission shaft is connected with the reducer. The operation of the transmission shaft is achieved under the drive of the reducer. The rotation of a gear is achieved under the drive of the transmission shaft. The rotating motion of the clamping mechanism is achieved under the effect of a transmission gear. A second stepping motor is connected with a transmission lead screw. The transmission lead screw drives a sliding mechanism to move in the axial direction of the transmission lead screw, and the sliding mechanism drives a feed mechanism to move. A third stepping motor is connected with the feed mechanism to drive a tool head bracket to move. The tool head bracket is mounted on the feed mechanism. The tool head bracket drives a tool head to move. The clamping mechanism, the drive mechanism and the tool head moving mechanism are matched during moving through the control device, the rotating motion of the clamping mechanism and the feed motion of the forming tool head are achieved, and the required part is machined. The single-point progressive forming machine has the beneficial effects of being low in manufacturing cost, wide in application range and high in production speed.

The invention relates to a disc-like turntable type scriber for mulching crops on ridges. The scriber comprises a cross shaft (1), disc-like turntables (2), a push rod (3), positioning holes (4) and positioning pins (5). The scriber is characterized in that the three disc-like turntables (2) are respectively arranged on the middle part and two sides of the cross shaft (1), the disc-like turntables (2) can rotate around the cross shaft (1), two sides of each disc-like turntable (2) are provided with positioning holes (4), the positioning pins (5) are arranged in the positioning holes (4), and the push rod (3) is arranged vertically on the middle part of the cross shaft (1). When the scriber is in use, the push rod is pushed forwards, and the three disc-like turntables rotate into soil at a certain depth and leave travel trajectories of a certain depth on soil, wherein the travel trajectories serve as reference lines for mulching the crops in the later period to ensure that the mulch films are equal in distance, straight and uniform and facilitate the subsequent mechanized farming.

The invention relates to an alarm device comprising one buzzer, one fan, one detector and one fan controller. The buzzer is provided with a signal input end which is used for receiving a buzzing signal so that the buzzer is enabled to emit warning sound. The fan is used for heat radiation. The detector is connected with the signal input end so as to detect inputting of the buzzing signal to the buzzer and output a detection result. The fan controller receives the detection result and a working signal from a control device, and drives the fan to rotate according to the working signal and controls rotating speed of the fan according to the detection result. When the detection result indicates that there is no buzzing signal inputted to the buzzer, the fan controller controls the fan to rotate normally. When the detection result indicates that there is the buzzing signal inputted to the buzzer, the fan controller controls the fan to rotate in a deceleration way. The invention also relates to an alarm system comprising the alarm device.

The invention discloses an urban management video processing system and a working method. The urban management video processing method specifically comprises the following sub-steps: acquiring an urban management video; judging whether an error exists in the video or not; decoding the video stream to form a plurality of frames of images, and searching for wrong frames of images and wrong areas inthe plurality of frames of images; searching an error starting region block in the error frame image, and reconstructing error regions in sequence; and encoding the reconstructed frame image to form avideo image, outputting and uploading the video image. According to the invention, errors in the video can be discovered and processed in time, so that the video uploading accuracy is ensured.