Wireless signal energy collection method, wireless sensor wake-up method and device thereof

Abstract

The invention provides a wireless signal energy collection method, a wireless sensor wake-up method and a device, which include a wireless carrier transmitter and a signal receiving device. The signal receiving device includes a radio frequency induction antenna and an energy storage and rectification circuit. The wireless carrier The transmitter is used to transmit a wireless carrier signal of a specific frequency. The radio frequency induction antenna is responsible for receiving the wireless carrier signal and generating an induced current. The induced current is stored and / or amplified through the energy storage and rectification circuit; when When the amplified voltage of the induced current is enough to drive the CMOS inverter to operate, the CMOS inverter outputs a wireless sensor wake-up signal to trigger the wireless sensor to enter the working mode. The invention can not only significantly reduce the power consumption of wireless sensors and reduce the cost of replacing sensor batteries in places that are difficult to access or construct, but also can significantly improve the real-time response of wireless sensors.

Description

technical field [0001] The invention relates to a wireless signal energy collection method, a wireless sensor wake-up method and a device thereof. Background technique [0002] Wireless sensors have been widely used in industrial and civil fields. In many applications, such as wildlife monitoring, monitoring of the working conditions of small industrial equipment, security fields, etc., limited by the installation location or the characteristics of the monitored object, the size of the sensor is limited, and it can only be powered by a button battery. When the application itself requires a fast communication response to the sensor, the current working modes of several common communication methods for wireless sensors such as Zigbee and Bluetooth low energy consumption cannot guarantee that the button battery carried by the sensor itself can last for more than half a year. In some applications, the cost of manual battery replacement, especially in inaccessible locations, has...

AI Technical Summary

Problems solved by technology

When the response time of the sensor is shortened, the power consumed by the sensor itself in communication will increase accordingly

When the time required for the sensor to respond to the external wireless data request is less than 5 seconds, no matter which of the above solutions is adopted, a 200mAh button battery obviously cannot meet the power demand of the sensor

And when the sensor is installed in an inaccessible location, the labor cost of replacing the battery is often far greater than the physical value of the sensor itself

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