3results about How to "Guaranteed State Consistency" patented technology

The utility model discloses a point switch contact group dynamometer, and relates to the railway equipment signal detection technology field, the point switch contact group dynamometer comprises a dynamometer body and a contact assembly, one side of the dynamometer body is fixedly provided with a display screen and buttons, the other side of the dynamometer body is fixedly provided with a first baffle plate and a second baffle plate, the first probe assembly is composed of a first conduction piece, a second conduction piece, a first pressure diaphragm, a second pressure diaphragm and a supporting plate. The point switch contact group dynamometer disclosed by the utility model is provided with the supporting plate, so that the pressure of the first contact sheet and the pressure of the second contact sheet are conducted to the first conduction sheet and the second conduction sheet, and then the pressure conducted to the first pressure diaphragm and the pressure conducted to the second pressure diaphragm do not influence each other; meanwhile, a plurality of contact pieces can be tested, time and labor are saved, a large number of point switch contact sets can be conveniently tested, and the use efficiency of the dynamometer is improved.

This invention relates to the field of auxiliary technology for road compaction testing, specifically a portable sampling and testing device for road compaction testing. The device includes a mounting frame with a sampling mechanism on the frame and an operating mechanism on the sampling mechanism. The operating mechanism includes a support frame and support rods. Symmetrically arranged lifting rods are fixedly connected to the support rods. A first strong magnet is fixedly connected to the top of each lifting rod. A push plate is fixedly connected to the bottom of each lifting rod. A scraper is fixedly connected to the bottom of the push plate. A first spring is fixedly connected to the bottom of each support rod at a position corresponding to the lifting rod. The beneficial effects of this invention are: before sampling, the scraper can rotate to remove surface soil and loose impurities from the sampling point, preventing surface soil from mixing into the core sample within the sampling ring, ensuring the purity and representativeness of the sample, eliminating interference from surface soil on density and moisture content testing, improving the accuracy of compaction test data, and ensuring the reliability of construction quality assessment.

The application belongs to the technical field of quantum secure communication, and discloses a key rotation method and system for a quantum secure network, which executes a key rotation process in a state machine driven manner on the premise of maintaining uninterrupted business services; specifically, while a current key is kept effective to process existing business, a next key is generated; a distributed lock mechanism is used to exclusively execute a key switching operation in a multi-node environment; the next key is atomically switched to a new current key, and the original current key state is updated to an old key, so as to realize seamless transition of business data encryption and decryption keys. Compared with the prior art, the application realizes uninterrupted business during the key rotation process, establishes an effective multi-node cooperation mechanism, introduces a transaction management mechanism, designs a perfect fault detection and automatic recovery mechanism, and builds a full life cycle security management system of codebooks and random number books to realize controllable full process from creation to archiving.