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444 results about "Hibernation" patented technology

Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy characterized by low body-temperature, slow breathing and heart-rate, and low metabolic rate. It most commonly occurs during winter months.

Wireless sensor network distributed hibernation method based on probability statistics

The invention discloses a wireless sensor network distributed hibernation method based on probability statistics, belonging to the technical field of communication network. After distributed hibernation process is started, when being in a redundant state, a node to be tested sends hibernation announcement message to nodes at the same layer, a forward node and a backward node; the forward node modifies the working state of the node to be tested in neighbor node list into a hibernation state; when the node to be tested is not the only one in an activated state in the nodes at the same layer or not the only forward node in the activated state of the backward node, the nodes at the same layer and the backward node modify the working state of the node to be tested in the neighbor node list intoa hibernation state; the node to be tested can be used for closing a wireless communication module and is formally switched into the hibernation state; and after a hibernation timer is time-out, thenode to be tested sends hibernation awaking message to the nodes at the same layer, the forward node and the backward node. The method can guarantee the network connectivity and lead the network nodesto do self-adapting hibernation adjustment according to different application awareness.
Owner:BEIJING JIAOTONG UNIV

Universal data acquisition unit and data acquisition method thereof

The invention relates to a universal data acquisition unit and a data acquisition method thereof, belonging to the technical field of data acquisition; the universal data acquisition unit comprises amicroprocessor; a multi-path discrete signal input interface is connected with the input end of a counter by a photoelectric isolating circuit, and a multi-path continuous signal input interface is connected with the input end of an A/D converter, and a microprocessor is connected with the input ends of the A/D converter and the counter. The data acquisition method comprises that: system initialization is carried out; continuous and discrete signal interrupt vector is set; interrupt latency is carried out, if the discrete signal is interrupted, the discrete signal is acquired; if the continuous signal is interrupted, the continuous signal is acquired; if a watchdog is interrupted, a system is restarted; if hibernation is interrupted, system setting data is stored, and then a hibernation state is carried out; and then, interrupt latency awaken operation is carried out, if awakening is interrupted, the system is started, and the setting is restored before interruption; if the continuoussignal and the discrete signal are acquired, interrupt latency is continuously carried out after data is transmitted to an upper computer; if not, interrupt latency is carried out directly.
Owner:NORTHEASTERN UNIV
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