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Wireless sensing system based on radio frequency energy awakening

A technology of wireless sensing and radio frequency energy, applied in the field of wireless sensing, can solve the problems of long acquisition period and reduce the real-time performance of data acquisition, and achieve the effect of reducing power consumption, facilitating remote data maintenance and management, and improving data transmission distance.

Pending Publication Date: 2021-11-23
HARBIN INST OF TECH
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AI Technical Summary

Problems solved by technology

In order to save energy and prolong the life of the wireless sensor network, the acquisition period is often very long, which undoubtedly reduces the real-time performance of data acquisition

Method used

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  • Wireless sensing system based on radio frequency energy awakening
  • Wireless sensing system based on radio frequency energy awakening
  • Wireless sensing system based on radio frequency energy awakening

Examples

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specific Embodiment 1

[0030] according to Figure 1 to Figure 4 As shown, the present invention provides a wireless sensor system based on radio frequency energy wake-up, such as figure 1 As shown, the nodes in the cluster include a receiving antenna, a rectification matching module, a PMIC, an MCU, a sensor, an energy source, a load switch and a wireless communication module.

[0031] The energy source supplies power to the sensor, the load switch, and the MCU. The MCU can communicate with the sensor and the wireless communication module, and controls the energy source to supply power to the wireless communication module through the load switch. The receiving antenna is connected to the rectification matching module, and then converted and output by the PMIC and connected to the MCU as an interrupt signal.

[0032] After the nodes in the cluster are powered on, the MCU and sensors are in the dormant state by default, and the load switch is turned off by default. After the wake-up source arrives, ...

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Abstract

The invention relates to a wireless sensing system based on radio frequency energy awakening. The invention relates to the technical field of wireless sensing. The system comprises a plurality of clusters, an awakening source and a cloud server, wherein each cluster comprises a plurality of intra-cluster nodes and a cluster head node, information collected by the intra-cluster nodes is gathered to the cluster head node and is forwarded to a cloud server through data fusion, and the intra-cluster nodes and the cluster head node are awakened to work by an awakening source. A load switch is controlled through the MCU, so that differentiated management of a high-energy-consumption module and a low-energy-consumption module is realized; in a dormant state, the high-energy-consumption wireless communication module and the DTU are powered off by the load switch; and when needed, the device is powered on. By means of the fine management of energy, the energy consumption is lower, and the service life of the wireless sensing system is longer.

Description

technical field [0001] The invention relates to the technical field of wireless sensing, and is a wireless sensing system based on radio frequency energy wake-up. Background technique [0002] In recent years, with the development of microelectronics, wireless communication and low-power sensors, wireless sensor network technology has been greatly developed. [0003] The wireless sensor network is composed of a large number of cheap sensor nodes. The nodes are isomorphic, low in cost, small in size, and most of the nodes do not move. It is used to monitor the environmental data around the node, realize periodic collection and send it out wirelessly. In order to save energy and prolong the life of the wireless sensor network, the acquisition period is often very long, which undoubtedly reduces the real-time performance of data acquisition. [0004] A remote wake-up method can be used to wake up the wireless sensor system when it needs to collect and upload data. At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q9/00H04W4/38H04W84/18
CPCH04Q9/00H04W4/38H04W84/18H04Q2209/40H04Q2209/883H04Q2209/886Y02D30/70
Inventor 张宇峰刘小强李明雪杨睿陌
Owner HARBIN INST OF TECH
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