Cross-protocol communication platform based on passive sensing technology

Abstract

The invention, which belongs to the technical field of the internet of things information system, provides a cross-protocol communication platform based on a passive sensing technology comprising a radio frequency front section, a receiver, a transmitter, a microcontroller and sensing equipment. The receiver is used for decoding the received signal, specifically comprises a detector, a peak valuediscovering device, a threshold value setting circuit and a comparator which are connected in sequence. The transmitter is used for transmitting communication signals of different protocols to achievecross-platform communication, adjustment is conducted by controlling digital transmission signals output by a microcontroller and impedance of a matching network, and modulation modes adopted by different platform communication protocols are output; according to the invention, multiple modulation modes are realized on one device through the backscatter modulation technology, the platform can adaptively communicate with multiple devices according to needs, and signals are generated only through the backscatter modulation technology, thereby playing a positive role in finally improving the mutual communication between different devices of the Internet of Things.

Description

technical field [0001] The invention belongs to the technical field of Internet of Things information systems, and relates to an Internet of Things communication platform, in particular to a cross-protocol communication platform based on passive sensing technology. Background technique [0002] As an extension of the information system to the physical world, the Internet of Things expands the ability of human beings to recognize and control the physical world. It has been called the third wave of the world's information industry after computers and the Internet, and is profoundly changing the living environment of human beings. and lifestyle. [0003] The core tasks of the Internet of Things are ubiquitous data perception, wireless-based data transmission, and intelligent data processing. With the development of 5G and big data technology, large-scale data transmission and processing are no longer restricting the Internet of Things. Factors of application development, the r...

AI Technical Summary

Problems solved by technology

[0003] The core tasks of the Internet of Things are ubiquitous data perception, wireless-based data transmission, and intelligent data processing. With the development of 5G and big data technology, large-scale data transmission and processing are no longer restricting the Internet of Things. Factors of application development, the realization of ubiquitous data perception is the key to the Internet of Things, especially artificial intelligence and industrial manufacturing 4.0 are flourishing under the impetus of the country, and there are more and more related applications of robots and industrial Internet of Things. The data perception of the Internet of Things puts forward higher requirements. The Internet of Things needs to realize a wider range of interconnection and intercommunication connections, including connections between mobile phones, computers, information devices, and all intelligent and non-intelligent physical devices. Different devices have different communication protocols. Therefore, a variety of connection methods are required, but the existing technology can only realize the information exchange between one communication protocol, and cannot independently realize free communication between multiple devices

For example, RFID tags use the EPC protocol to communicate with readers, but cannot directly communicate with mobile phones or computers. Some wearable devices can only use specific communication protocols to communicate with special equipment, and cannot independently choose communication protocols to communicate. This brings a bottleneck to all interconnection of the Internet of Things. In order to solve this problem, it is necessary to design an Internet of Things platform capable of cross-protocol communication, which can adaptively select communication protocols according to requirements, and realize communication with various communication terminals.

In addition, there are many types of IoT devices, and the number reaches hundreds of billions, but there is an important problem: IoT nodes are difficult to supply power for a long time to run continuously, and the working method of the battery leads to a very limited working life of the nodes, which requires a lot of maintenance costs , and because of the need to add a power supply device, the size of the node is often greatly limited, and it is difficult to apply it to clothing, shoes and socks and other similar daily necessities, which directly leads to the scalability and practicality of the system. In particular, the complexity of the algorithm required to design a cross-protocol communication IoT platform increases, so more energy is consumed. Energy issues are also an important consideration in designing a cross-protocol communication platform, so it is necessary to design a low-energy consumption and can realize cross-protocol communication platform between various devices

[0005] The main problem to be solved to achieve cross-protocol communication is that the modulation and demodulation methods used by different communication protocols are inconsistent. For example, the EPC protocol stipulates that RFID uses ASK modulation, the Bluetooth technology BLE protocol uses FSK modulation, and the Wifi protocol uses QPSK. Modulation, broadcast information uses FM modulation, so, if figure 1 As shown, how to design a cross-protocol communication platform that can simultaneously generate ASK, PSK, QPSK, FSK, FM and other modulation methods to realize communication between different devices, and considering the energy factor, this platform cannot have its own energy, and passive It is a key issue that we need to solve, and it is also a necessary issue to realize the real interoperability and connection of IoT devices.

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