Method for driving radio-frequency and capacitance mixed antennas

Abstract

The invention relates to a method for driving radio-frequency and capacitance mixed antennas, which adopts a control chip, a sensing module and an antenna, wherein the sensing module is provided with a capacitive proximity sensor and an electromagnetic wave action circuit; the control chip is electrically connected with a preset external processing system; and the processing flow of the control chip in the process of running is implemented through that the control chip firstly switches the capacitive proximity sensor in the sensing module to carry out detection through the antenna, when a situation that an object enters a sensing range is detected, the control chip switches the electromagnetic wave action circuit in the sensing module to carry out detection through the antenna, the control chip receives sensing signals of the electromagnetic wave action circuit and then transmits the sensing signals to the preset external processing system to carry out working application, and then the control chip switches the antenna into an antenna of the capacitive proximity sensor in the sensing module, thereby reducing much power consumption and the running time of the electromagnetic wave action circuit producing high heat; and the control chip and the sensing module share a single antenna, thereby achieving the effects of saving power consumption, lowering the temperature, reducing the product cost and reducing the setting-occupied space.

Description

technical field [0001] The present invention provides a driving method for a hybrid antenna of radio frequency and capacitance, especially the use of a control chip to switch the capacitive proximity sensor through the antenna to detect objects entering the sensing range, and then switch to allow the electromagnetic wave action circuit to sense through the same antenna, and then Under the same use effect, it can save the consumed electric energy and reduce the generated heat energy. Background technique [0002] With the continuous research and development of wireless technology, its related products are constantly coming out, and various products not only make people's lives more convenient, but also bring convenience, time saving, anti-theft and many other advantages in industrial application, among which In particular, the application of radio frequency (RFID, Radio Frequency Identification) can be seen everywhere, such as access control of companies and homes, stored val...

AI Technical Summary

Problems solved by technology

[0007] (1) The RFID sensing method will continuously emit electromagnetic waves regardless of whether there is a card within the detection range, resulting in the disadvantages of continuous heating, high temperature and large power consumption

[0008] (2) When installing RFID sensing and infrared or capacitive sensing at the same time, and setting up two antennas to connect the two separately, not only the cost will increase, but also the space occupied by the setting will increase accordingly

[0009] (3) If the antennas of capacitive sensing and RFID sensing are set adjacent to each other or at intervals, the two antennas will interfere with each other. If one of the antennas is turned off and grounded or turned off in a floating connection, a barrier will be created , The barrier makes the induction range and effect worse, or the field shape and matching change or destroy the electromagnetic wave conversion efficiency, which has the problem of deteriorating the signal strength and transmission distance

[0010] The above-mentioned existing wireless identification method has many problems and shortcomings, which is the goal that the inventor and those engaged in this industry want to improve.

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