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Network node for a wireless sensor network

A wireless sensor, sensor network technology, applied in the reflection/re-radiation of radio waves, network topology, wireless communication, etc., can solve problems such as oscillator current reduction

Active Publication Date: 2013-01-09
GIESECKE & DEVRIENT MOBILE SECURITY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Here, the presence of the IC card is detected via monitoring the energy consumption of the oscillator employed in the reading device, wherein the IC card in the environment of the reading device causes a reduction in the oscillator current

Method used

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  • Network node for a wireless sensor network
  • Network node for a wireless sensor network

Examples

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Embodiment Construction

[0024] figure 1 The schematic diagram shows the per se known structure of a network node 1 , which is referred to below as a sensor network node for use in a wireless sensor network comprising several further sensor network nodes 1 . A sensor network node 1 comprises a sensor 2 with which certain quantities in the environment of the sensor 2 can be measured, such as temperature. The data captured via the sensor 2 is processed in a suitable manner via the A / D converter 3 and the processor 4 with corresponding memory 5 in order to then use the data as a wireless communication signal via the transceiver 6 (i.e. the sending and receiving unit) and sent to the sensor network. These communication signals can then be received and processed by other sensor network nodes within the range of sensor network node 1 . Here, each sensor network node in the sensor network can establish communication connections with other sensor network nodes within its broadcast range, and send and receiv...

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Abstract

The invention relates to a network node for a wireless communication network, in particular for a wireless sensor network, comprising a wireless communication device (6). The communication device (6) can be operated in a first communication mode in which the communication device transmits first communication signals at a first transmission power in order to wirelessly communicate with other network nodes (1) in the communication network. Furthermore, the communication device (6) can be operated in a second communication mode in which the communication device (6) transmits second communication signals at a second transmission power in order to communicate with a transponder (11), wherein the second transmission power is greater than the first transmission power. In the first communication mode, the presence of a transponder (11) in the surroundings of the network node (1) can be detected by the communication device (6) by means of the first communication signals.

Description

technical field [0001] The present invention relates to a network node for a wireless communication network, in particular to a network node for a wireless sensor network, which can communicate with other network nodes in the sensor network via a communication device. Background technique [0002] Network nodes employed in wireless communication networks, and in particular in wireless sensor networks, comprise corresponding communication devices for wireless communication with other network nodes. Since network nodes in wireless communication networks are usually operated autonomously from energy storage devices in the form of batteries or accumulators, the transmission power of the communication devices is usually low. Therefore, the network node does not permit RFID communication with the corresponding transponder, which usually uses a higher transmission power in order to also supply energy to the transponder via the contactless transmitted communication signal. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/74G06K7/00H04W84/18
CPCG06K7/0008H04W84/18G06K7/10128G06K7/10475
Inventor K.芬肯泽勒K.舒尔茨
Owner GIESECKE & DEVRIENT MOBILE SECURITY GMBH
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