4results about How to "Write accurately" patented technology

This invention discloses a self-calibration method and system based on the metrological function of an intelligent measurement switch, relating to the fields of electrical variable measurement and magnetic variable measurement technology. The specific steps of the method are as follows: In a standard metrological test environment, the inherent step electrical signal of the contact pre-breakdown is collected as the sole calibration benchmark; parameters are extracted to construct a full-condition benchmark library and encrypted for read-only storage; real-time signals are synchronously acquired during equipment operation with phase-locked loop, and orthogonal decomposition is used to purify and match benchmark features; combined with multi-physics parameters, errors are separated through a decoupling model, and amplitude and phase errors are calculated; calibration coefficients are generated and transmitted via a verification bus; calibration verification and fault tolerance processing are completed through dual-channel verification. This invention achieves in-situ calibration without shutdown by using the inherent signal of the device as a benchmark and encrypting its storage; multi-source errors are separated through phase-locked acquisition and orthogonal decoupling, improving metrological correction accuracy; and a closed loop is formed through an adaptive algorithm and dual-channel verification to ensure accurate calibration and stable equipment operation.

The utility model relates to the technical field of insulation connection, in particular to an insulation connection mode of an SMA patch cord and a metal casing, which comprises a metal casing body, positioning holes, a hard plastic sheet and a locking screw, the left side and the right side of the metal casing body are uniformly provided with the positioning holes, and the hard plastic sheet is provided with the locking screw. The left end of the upper side of the metal casing body is fixedly provided with a hard plastic sheet, the hard plastic sheet and the metal casing body are pressed tightly through a nut, the left end of the metal casing body is fixedly provided with a locking screw, the threaded end of the SMA conversion line penetrates through an installation hole of the hard plastic sheet, the hard plastic sheet is provided with a D-shaped hole, and the D-shaped hole is communicated with the locking screw. The metal casing body is matched with the shape of the thread part of the SMA conversion line to play a role in insulation and prevent the SMA conversion line from rotating, the positioning hole is formed in the upper side of the metal casing body to prevent the metal casing body from being in contact with an SMA head, interference of clutters outside the casing on communication signals can be isolated, interference of clutters outside the metal casing body can be isolated, electrostatic protection capability can be improved, and product performance can be improved.

The invention discloses a UDS-based vehicle ECU security access and firmware online upgrading method. The method comprises the following steps: establishing a diagnosis communication link with a target ECU; executing a security access unlocking process based on an external configurable security algorithm component by diagnosing the communication link; after the security access is unlocked, the target ECU is controlled to enter a programmable session state and complete storage area preparation by diagnosing a communication link; analyzing the firmware file to be upgraded into a plurality of data blocks; sequentially transmitting the plurality of data blocks to a prepared storage area of the target ECU based on the diagnostic communication link; and after the plurality of data blocks are all transmitted and all pass the verification, executing a reset operation for the target ECU. Security access unlocking is executed through an external configurable security algorithm component, and flexible configuration of a security mechanism and compatibility of multiple manufacturers are achieved; and through block transmission verification and a failure retransmission mechanism, the data transmission robustness and the firmware upgrading reliability are improved.

The invention discloses a data management method and a related device, relates to the field of data processing, and can determine a data reading interface of target data content in response to a reading operation on the target data content. And according to the data reading interface, determining a target interface signature associated with the data reading interface from a preset interface association table. And associating source data read according to the data reading interface with the target interface signature and then storing the source data and the target interface signature so as to perform write-in recovery of the source data by using a data write-in interface corresponding to the data reading interface and determined from a preset interface association table according to the target interface signature when write-in recovery is performed on the source data. The data reading interface and the data writing interface are associated through the same interface signature, then the interface signature is used for determining the writing interface, it is guaranteed that the program reading interface and the program writing interface of the same data are in one-to-one correspondence, and program abnormity caused by writing recovery position disorder is avoided.