34results about How to "Check correctness" patented technology

The present invention provides an indoor mobile robot vision SLAM method based on the Kinect. The method comprises the following steps: S1: acquiring color RGB data and Depth data of an indoor environment by using a Kinect camera; S2: performing feature detection of RGB data and implementing rapid and effective matching between adjacent images; S3: combining inner parameters of a Kinect camera after calibration and pixel point depth values to convert a 2D image point into a 3D space point, and establishing a corresponding relationship of 3D point cloud; S4: using the RANSAC algorithm to eliminate external points of the point cloud to complete point cloud rough matching; S5: employing an ICP algorithm with a double limit of an Euclidean distance and an angle threshold to complete fine matching of the point cloud; and S6: introducing a weight in a key frame selection, and employing the g2o algorithm to optimize a robot posture, and finally obtaining a robot moving trajectory, and generating a 3D point cloud map. The indoor mobile robot vision SLAM method based on the Kinect can solve the problems that a point cloud registration portion in a vision SLAM system is liable to local optimum and is large the matching error, and therefore the registration accuracy of the point cloud is improved.

The invention relates to a multi-core cable wire testing device, aiming to solve the problems of low efficiency, easy errors, hardly discovery of poor contact caused by faulty welding between a wire and a terminal, and the like in the prior art. The multi-core cable wire testing device comprises a testing instrument and a vibrator, wherein the testing instrument comprises an operation panel and a testing circuit which is formed by sequentially connecting a multivibrator, a frequency division loop, a sequential output loop and a display loop in series, a power supply supplies power to the multivibrator and the loops, and two testing sockets are respectively connected with the sequential output loop and the display loop. The invention detects a multi-core cable wire under the vibration condition, can not only detect the wiring correction, but also detect whether hidden danger, such as poor contact due to faulty welding, and the like exists.

The invention discloses a voice section segmentation detection method and system. The method includes the steps of obtaining segmentation results obtained by conducting voice section segmentation on reading voices; conducting voice recognition on the reading voices to obtain recognition results; respectively calculating the recognition rate of the segmentation results and the recognition rate of the recognition results according to reading texts corresponding to the reading voices; if the recognition rate of the segmentation results is higher than the recognition rate of the recognition results, determining that the segmentation results are normal; if the recognition rate of the segmentation results is not higher than the recognition rate of the recognition results, determining that the segmentation results are abnormal. The invention further discloses a spoken language detecting and evaluating method and system. By means of the voice section segmentation detection method and system and the spoken language detecting and evaluating method and system, whether the voice section segmentation results are abnormal or not can be effectively detected, and the accuracy of evaluating and detecting results is further guaranteed.

The invention provides a function verification method and platform for a DDR3 SDRAM (double data rate 3 synchronous dynamic random access memory) controller. The function verification method comprises steps as follows: adopting a test case to detect correctness of user read-write operation, specific user interface timing sequences or signals; adopting a port monitoring module designed with layering and object oriented technologies to detect correctness of DDR3 SDRAM port signals. According to the invention, the design of the port monitoring module adopts layering and object oriented design methods, so that various timing sequence constraints at a DDR3 SDRAM port are effectively organized in the aspects of time and space, the probability of omission is low, and maintenance and upgrading are facilitated.

The invention provides a vehicle air conditioner offline detection device and method, and relates to the field of vehicle air conditioner detection. The vehicle air conditioner offline detection device comprises a detection module, wherein the detection module comprises an industrial personal computer and a display screen communicating with the industrial personal computer; a signal acquisition module and a signal indication module are connected with a data communication module; the data communication module is in two-way communication connection with the industrial personal computer, and is in two-way connection with a controlled air conditioner through a communication wire harness; a signal receiving unit, a data processing and analyzing unit and an instruction sending unit are arrangedin the industrial personal computer; the signal receiving unit is used for receiving the data acquired by the signal acquisition module and sending the data to the data processing and analyzing unit;the data processing and analyzing unit is used for comparing and analyzing the received data and feedback data, and sending an analysis result to the instruction sending unit; and the instruction sending unit is used for sending an execution instruction to the signal indication module according to the analysis result. According to the vehicle air conditioner offline detection device and the method, rapid delivery inspection of the vehicle air conditioner can be realized, an error position can be determined, and the detection efficiency of a factory is improved.

The invention relates to a detection method for a secondary system of a voltage transformer, and the method is characterized in that the method comprises the steps: (1), adding a single-phase AC voltage U0 to a primary side of the voltage transformer in a parallel manner; (3), detecting the voltages of Uao, Ubo and Uco from the secondary side of the voltage transformer at the same time, and observing whether Uao, Ubo and Uco reach balance or not; (3), measuring an opening triangular voltage ULN at the third side of the voltage transformer. The method is advantageous in that the method can completely detect the wiring correctness of a secondary system of the voltage transformer; the method can detect the opening triangular polarity and opening triangular voltage of the third side of the voltage transformer; and the method can detect the voltages of secondary measurement windings of the voltage transformer at the same time. The practice proves that the method improves the power supply reliability of the voltage transformer.

The invention provides a device for length fixing of welded joint impact specimens. The device comprises a length fixing fixture, a cutting fixture and a straight ruler; and the cutting fixture is arranged in the length fixing fixture, clamping plates of the length fixing fixture and clamping plates of the cutting fixture are both of an axisymmetric structure, the symmetry axis of the clamping plates of the length fixing fixture coincides with that of the clamping plates of the cutting fixture, the width of the cutting fixture is less than that of the length fixing fixture, a length fixing clamping rotary knob is arranged at one end of the length fixing fixture, and a cutting clamping rotary knob is arranged at one end of the cutting fixture. The device can accurately conduct notch positioning at different impact positions of the welded joint impact specimens in batches, quickly and simultaneously determine length machining lines of multiple specimens according to the positioned notchpositions to achieve quick and batched length fixing of the impact specimens and check the accuracy of the notch positions after notch machining is completed.

The invention provides a hydraulic heavy load mechanical arm augmented reality operation control system which comprises an site image information acquisition module, a man-machine interaction operating module, a MySQL database module, a cloud server module, a data visualization module, an anticollision detecting module, a data integration module and an emergency stop module; the site image information acquisition module is used for acquiring the image information of field operation and the spatial position information of a target object; the man-machine interaction operating module is used forenabling an operator to get involved in the operation procedure; the MySQL database module is used for storing the user information, the image information and the path planning information; the cloudserver module is used for generating a target model at the cloud terminal and combining the path planning information to calculate the path according to the operating task; the data visualization module is used for displaying the data analysis result on an operating interface; the anticollision detecting module is used for verifying whether the calculated path can be carried out safely and reliably on the aspect of model data; the data integration module is used for writing the verified reliable data in data frames according to the protocol requirements; and the emergency stop module is usedfor disconnecting control over the mechanical arm immediately in an emergency situation. The hydraulic heavy load mechanical arm augmented reality operation control system can improve the operating intelligence, operating friendliness and reliability of the mechanical arm.

The invention discloses a method for realizing multi-core cache consistency verification, which comprises the following steps of: S1, when a core updates a cache line to an M state, checking whether the cache line exists in caches of other cores; s2, when each core updates a cache line to an E state, checking whether the cache line exists in caches of other cores or not; s3, when one core updates the cache line to the S state, checking whether the cache line exists in the caches of other cores, if the state of other cores is S, checking whether the cache line data of the two cores are consistent, and meanwhile, checking whether the cache line data is consistent with the data in the memory; and S4, when one core updates the cache line to the I state, other cores are possible to be in any state, and check is not needed. According to the method and the device, by monitoring the update information of the first-level cache and the second-level cache and checking the data in the memory, the cache can be ensured to comply with an MESI consistency protocol, and meanwhile, the correctness of the data can be ensured.

The invention discloses a branch coefficient calculation method based on real-time fault data. Acquiring a real-time fault line from an energy management system; searching other lines on the power supply paths on the two sides of the fault line according to the energy management system model topology; calling the waveform list of the line protection device corresponding to the line on the power supply path, calling the waveform file of the line protection device corresponding to the line on the power supply path, calculating the fault current of the waveform file, and calculating the actual branch coefficient in the fault operation mode through real-time topology. According to the method, the actual analysis coefficient at the fault moment is obtained, and powerful help is provided for protection personnel to check the protection constant value.

The invention relates to a power plant CT secondary through-current method, which comprises the following steps of: connecting all current loops of each CT in series, and checking the correctness and integrity of wiring of all CT secondary loops by applying current at one position of a certain local terminal box during a CT secondary through-current test; further checking the correctness of a CT secondary circuit by applying currents with different amplitudes and phase sequences, and checking the correctness of a generator-transformer group protection cabinet, a fault recording cabinet and DCS background sampling and parameter setting at the same time. Through-flow does not need to be carried out at each CT terminal, the test efficiency is improved, the practicability is high, and the method is suitable for different power plant electrical main systems.

The invention relates to a computer system cipher module detection method and device and a storage medium, and the method comprises the following steps: calling a basic hardware cipher module, and detecting the basic hardware cipher module according to the encryption and decryption results of the basic hardware cipher module on a verification file; calling an operating system cryptographic module to detect the operating system cryptographic module according to encryption and decryption results of the operating system cryptographic module on the verification file; calling a middleware password module, so as to detect the middleware password module according to encryption and decryption results of the middleware password module on the verification file; and calling the application layer cryptographic module to detect the application layer cryptographic module according to the encryption and decryption results of the verification file by the application layer cryptographic module. According to the technical scheme, the problem that the discretely distributed cryptographic modules in the computer system cannot be effectively detected is effectively solved. Meanwhile, the detection efficiency is effectively improved.

The invention discloses a system and a method for double-cache calibration of DMX512 data of a stage lamp. The system comprises a receiving device, a memory, a processor, and a judger. The method comprises the steps of receiving data from a DMX512 interface; defining two cache regions for receiving data, BUFF1 and BUFF2, wherein the BUFF1 receives channel data needed by a stage lamp, and the BUFF2receives a DMX512 data packet; comparing the DMX512 data packet received by the BUFF2 with a DMX512 protocol; and if the DMX512 data packet received by the BUFF2 is consistent with the DMX512 protocol, outputting the channel data of the BUFF1 to the stage lamp, otherwise, deleting the channel data of the BUFF1 and re-receiving data. According to the invention, a reliable data stream can be obtained through single judgment in unreliable transmission, so that the stage lamp can obtain a correct channel value required by the lamp in unidirectional DMX512 data.