47results about How to "Guaranteed safe isolation" patented technology

The invention discloses a data encryption system and method for interaction between tenants and a cloud server memory, and belongs to the technical field of computer data encryption. In the data encryption system, a control terminal is used for being in communication with the tenants and the cloud server memory, and receiving data file request information of the tenants; a data encryption key is obtained from a key manager, encryption and decryption are conducted on data files in safety board, and data file ciphertext is sent to the cloud server memory, or data file plaintext is transmitted to the tenants; the key manager is used for being in communication with the control terminal, generating the data encryption key, sending the data encryption key to the control terminal and sending the data file request information to a key storage; the key storage is used for safely storing the data file request information sent by the key manager. According to the data encryption system and method for interaction between the tenants and the cloud server memory, safety protection of tenant data is achieved through usage of tenant identifications and a symmetric cryptosystem encryption algorithm, intensity and complexity of key management can be reduced, and isolation of the tenant data is guaranteed.

The invention relates to an observation window device arranged on a tunnel boring machine (TBM). The outline of the observation window is a disc; the observation window successively comprises a glass cover, lenses, a blank cap and a safety plug from front to back, and the periphery thereof comprises a base board flange, a positioning flange, a supported flange, a sheath and a strengthening ring. The base board flange is a hollow flange ring and is in combined welding with a cabin door by using the cabin door as a base; the glass cover, lenses, the blank cap, the safety plug, the positioning flange and the supported flange are coaxially installed and fixed by screws; and all joints are sealed by rubber gaskets and the like. The device applied on a shield machine is special equipment established for observing the state of the structure of the soil body in a soil chamber before builders need to enter the soil chamber to manually remove barriers and replace tools, and judges whether opening the door and entering the chamber is safe or not according to the observed soil body in the soil chamber so as to prevent disasters for the operating personnel entering the chamber and the whole construction site caused by collapse, onrush water, onrush sand and the like of an excavation face. The device has simple structure and easy use.

The invention relates to a three-level type automatic ammunition-filling ammunition-pressing production line, which comprises six anti-explosion chambers, wherein the six anti-explosion chambers are composed of three ammunition-filling chambers and three ammunition-pressing chambers which are staggered. Rotating anti-explosion doors are respectively arranged among the anti-explosion chambers and anti-explosion walls positioned at two ends of each anti-explosion chamber and outside each anti-explosion chamber. Each ammunition-filling chamber is provided with a flow line, and an ammunition conveying mechanical hand, an ammunition sleeve wiping machine, a multi-station turntable and a die delivery device are sequentially arranged on an inlet of the flow line. The other side of an ammunition-weighing ammunition-filling machine is provided with a connecting gate type anti-explosion door, and an ammunition outlet is located on an ammunition barrel conveying device positioned above the ammunition-weighing ammunition-filling machine. The ammunition-weighing ammunition-filling machine is arranged on one side of the multi-station turntable, and an ammunition-flushing wiping device is arranged on the other side of the multi-station turntable. The inside of each ammunition-pressing chamber is also provided with a flow line, and a die delivery device which is the same as the die delivery device in each ammunition-filling chamber, a multi-station turntable which is the same as the multi-station turntable in each ammunition-filling chamber, an ammunition sleeve lifting device and an ammunition conveying mechanical hand which is the same as the ammunition conveying mechanical hand in each ammunition-filling chamber are sequentially arranged on the flow line. A pressing machine and an auxiliary device are arranged on one side of each multi-station turntable. The three-level type automatic ammunition-filling ammunition-pressing production line can be widely used for production of dangerous articles which are inflammable and explosive.

The invention discloses a variable multifunctional embedded roadside motorized parking space which comprises a ground marking system, a lane function indicating system and a roadside parking space display and monitoring system. The parking space has the advantages of being variable and multifunctional, wherein the variable advantage is characterized in that the parking space is used for passage ofmotor vehicles during the daytime to meet the demand for large traffic flow during the daytime and used for parking on the roadside at night to meet the demand of parking on the roadside at night; the multifunctional advantage is characterized in that the parking space is used as a motorway during the daytime and as the roadside parking space and a motor vehicle and non-motor vehicle isolation belt at night.

The invention discloses a load distribution and control circuit of a diesel generating set speed controller. The load distribution and control circuit of the diesel generating set speed controller is composed of a load detection circuit module, a signal conditioning circuit module and a speed reduction control circuit module, wherein the load detection circuit module is composed of three groups of circuits. According to the load distribution and control circuit of the diesel generating set speed controller, through collection of voltage signals and current signals of each generator, output voltage, frequency and phase angles between generator sets are automatically adjusted, synchronization, automatic switching-on and connection to a grid of the different generator sets are realized, and impacts due to combination of the generator sets are effectively avoided. The load distribution and control circuit of the diesel generating set speed controller can realize load distribution and balance control when the multiple diesel generators are connected to the grid and in operation, wherein the load distribution and balance control includes the synchronization of power supply frequency of all the diesel generators in a grid-connected system and the load distribution and the balance among the different generator sets, and therefore the power supply quality and the power supply reliability of the grid-connected generator sets are improved.