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Data management system and method based on composite blockchain network

The invention relates to a data management system and method based on a composite blockchain network, wherein the system comprises a first-level blockchain network and at least one second-level blockchain network; the second-level blockchain network comprises multiple mutually connected slave node servers; the second-level blockchain network sets a master node server in all the slave node servers; and the master node servers in all the second-level blockchain networks are mutually connected, so that the first-level blockchain network is formed. By means of the data management system and method disclosed by the invention, the integrity, the authenticity and the standardization of data can be ensured through audit signature verification of the composite multi-level blockchain network; the security of the data is ensured in a hierarchical encryption and multiple authorization mode; structural design of hierarchical storage of detailed data and classified index data is carried out through a blockchain technology and the composite multi-level network; therefore, the data is relatively smooth to interconnect, intercommunicate and exchange; furthermore, audit tracing can be realized; and the data retrieving, applying and sharing efficiency can be increased.
Owner:黑龙江卓亚科技有限公司

Fire disaster self-saving high-speed escaping machine that can be operated and controlled by micro-computer in wireless mode

InactiveCN101095971AEliminate critical defectsQuick and efficient escapeProgramme controlTelemetry/telecontrol selection arrangementsFire - disastersHand held
The invention relates to a fire self-rescuing high-speed life device controlled by micro computer, which can be controlled without wire. The device comprises host computer component, at least a hand-hold wireless remote controller, falling load device and sling component, wherein the host computer component is set at the special life port of building or in the refuge safe room and is connected with the building. The hand-hold wireless remote controller is taken by escaping man or escaping man, escort and ground meeting man all take hand-hold wireless remote controller. The falling load device is connected with the host computer component. The sling component is connected with the falling load device and the host computer component respectively. The device also comprises an air locator, which control the air location of falling load device and the distance between the falling load device and the building outer wall. The air locator is connected with the falling load device and is communicated with the hand-hole wireless remote controller without wire. The device can be controlled by escaping man or escaping man and ground rescuing man. It can control falling speed and space location. It is provided with fire proof and collision prevention performance and safe and reliable use.
Owner:唐海山
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