Passive communication method

Abstract

An embodiment of the invention provides a passive communication method. The method includes: sensing and capturing wireless electromagnetic wave signals; converting the wireless electromagnetic wave signals into electric energy; coding information to be transmitted and then transmitting the information. With the passive communication method based on environmental signal reflection, energy can be acquired form radio waves in the surrounding environment, the information can be transmitted by the aid of the energy, transmitting of the passive information can be realized, and the passive communication method can be used under extreme conditions or on some passive monitoring points.

Description

technical field [0001] The invention relates to communication technology, in particular to a passive communication method based on environmental signal reflection. Background technique [0002] The electronic products that people use every day need to consume power, such as mobile phones, if there is no power supply or the power supply is exhausted, no work can be done, especially, in some cases, we need some electronic equipment that runs for a long time, For example, long-term monitoring, etc. On the one hand, electric energy is needed to meet the operation of the components of the equipment itself. On the other hand, with the development of the Internet of Things, the information exchange between objects also requires the support of electric energy. [0003] In fact, our living environment is full of various energies, such as solar energy. Many manufacturers have developed equipment that uses solar energy to provide battery life for electronic products. Solar energy is un...

AI Technical Summary

Problems solved by technology

[0003] In fact, our living environment is full of various energies, such as solar energy. Many manufacturers have developed equipment that uses solar energy to provide battery life for electronic products. Solar energy is undoubtedly a clean energy source, but the acquisition of solar energy is not Reliable, and the miniaturization and efficiency of solar panels is still a relatively large technical bottleneck

[0004] In addition, there is another technology that uses sound waves to generate electricity. For example, when installing sound insulation walls on both sides of the highway, the sound is collected and used to work on piezoelectric materials to generate electricity that can be used by roadside street lamps. This technology It is very good, but depends on the sound source, if it is in a quiet place, it will not be usable

[0005] However, some people have begun to study the power generation of radio waves that are almost everywhere around them, and successfully use the radio waves to obtain a small amount of current. These radio waves include artificially emitted radio waves such as TV signals, mobile phone signals, and WIFI signals. It can be captured and obtained energy, but these currents are relatively weak, and the effective charging effect cannot be achieved for the time being.

Images