2results about "Fire alarm mechanical actuation" patented technology

The application discloses a kind of ship communication control method, device, equipment, medium and product.The method comprises: before the communication link of ship end and shore end is established, the digital certificate of ship end and shore end is verified, and identity authentication is carried out, after digital certificate verification passes and identity authentication passes, the communication link between ship end and shore end is established;After the communication link of ship end and shore end is established, temporary session key is generated, and temporary session key is divided into multiple key fragments, each key fragment is stored in multiple blockchain nodes;During the message transmission process of ship end and shore end through communication link, control ship end and shore end respectively obtain key fragment from blockchain node, recombine and restore to obtain temporary session key, and transmit after the transmission message is encrypted based on temporary session key.The technical scheme of the application can reduce the risk of eavesdropping, tampering and camouflage attack faced by remote control data in the transmission process of ship communication.

The utility model relates to the technical field of smoke alarm, specifically relates to a kind of quick wiring smoke alarm, including upper shell and lower shell, smoke alarm module is equipped between the two, and smoke alarm module includes circuit board, smoke sensor, buzzer and quick wiring device, quick wiring device includes terminal block, wiring terminal module and gland, multiple wiring terminal module are sequentially spaced in terminal block, wiring terminal module includes terminal block and the wire clamping spring in terminal block, the one end of wire clamping spring is formed with wire clamping site, two wire clamping sites are equipped with the force receiving site for receiving external pressing force between them;Wire clamping spring is also equipped with tear site, tear site is located in the middle of force receiving site, to separate force receiving site into two parts, simultaneously, two wire clamping sites are separated. Since two wire clamping sites are separated by tear site, two wire clamping sites can respectively produce adaptive deformation according to the thickness of connected wire, so that two wire clamping sites can simultaneously clamp different thickness of wire.