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Wireless sensing node based on radio frequency energy supply and awakening and self-driving method thereof

A wireless sensor node, self-driving technology, applied in the field of wireless sensor, can solve the problems of inability to directly drive wireless sensor nodes, weak radio frequency energy, etc., so as not to be affected by the environment and wiring, improve lifespan, and reduce discharge loss Effect

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

Problems solved by technology

[0005] The present invention provides a wireless sensor node based on radio frequency energy supply and its wake-up and self-driving method, which is used to solve the problem that the energy of radio frequency energy is weak and cannot directly drive common wireless sensor nodes, and can reduce the radio frequency to the greatest extent. The loss of energy in the application, through the coordinated application of the three links of energy storage, energy release, and sleep wake-up, realizes the self-driving of wireless sensor nodes based on radio frequency energy supply

Method used

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  • Wireless sensing node based on radio frequency energy supply and awakening and self-driving method thereof
  • Wireless sensing node based on radio frequency energy supply and awakening and self-driving method thereof

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Embodiment Construction

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] A wireless sensor node based on radio frequency energy supply, the wireless sensor node includes a radio frequency energy input, a PMIC, a supercapacitor, a load switch, a sensor, an MCU and a wireless communication module, and the radio frequency energy input is connected to the PMIC, The PMIC is connected with the supercapacitor and the load switch, the load switch is connected with the sensor, the MCU and the wireless communication module,...

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Abstract

The invention discloses a wireless sensing node based on radio frequency energy supply and an awakening and self-driving method thereof. The PMIC performs voltage conversion on the radio frequency energy input and charges the super capacitor thereafter, after the charging voltage reaches the preset threshold value of the PMIC, the load switch connected with the PMIC is switched on, and then the sensor, the MCU and the wireless communication module are powered on. After the wireless communication module is connected with the host, a connection instruction is sent to wake up the MCU, and the MCU collects sensor information and sends the sensor information to the host through the wireless communication module. According to the invention, storage of radio frequency energy is realized through cooperation of the PMIC with threshold detection, the load switch with low leakage current and the super capacitor; so that the discharge loss of radio frequency energy is reduced to the maximum extent through a dormancy wake-up mechanism; therefore, self-driving of the wireless sensing node powered by the radio frequency energy is realized through fine management of storage and release of the radio frequency energy.

Description

technical field [0001] The invention belongs to the technical field of wireless sensing; in particular, it relates to a wireless sensing node powered by radio frequency energy and a wake-up and self-driving method thereof. 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. A wireless sensor network consists of multiple wireless sensor nodes and hosts. [0003] The wireless sensor network covers a wide range and has a large number of sensor nodes. The traditional battery power supply method has a limited life, high labor costs for battery replacement, and environmental pollution from waste batteries. Therefore, a battery-free self-propelled wireless sensor node has a wide range of application scenarios. Energy in nature includes solar energy, temperature difference energy, radio frequency energy, wind energy, vibration energy, et...

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 张宇峰刘小强王天聪刘建文
Owner HARBIN INST OF TECH
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