Impedance matching system and method in power line communication
A technology of power line communication and impedance matching, which is applied in the field of Internet of Things communication, to achieve the effects of large impedance changes, cost reduction, and simplification of complexity
Active Publication Date: 2022-02-22
重庆源联信息科技有限公司
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Problems solved by technology
An impedance matching system and method in power line communication that not only takes into account the requirements of performance and low cost, but also solves the problem of adaptive impedance matching in power line communication is proposed
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[0063] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.
[0064] The technical scheme that the present invention solves the problems of the technologies described above is:
[0065] The invention proposes an adaptive impedance matching method between a power line communication module and a power line transmission channel in a power line communication system. In the basic method of the present invention, first, according to the impedance characteristics of the power line in the power line communication system, the impedance test is performed on the actual power line, and according to the change of the impedance of the power line, the impedance matching unit is used to realize various impedance matching combinations, that is, to realize the rough adjustment of adap...
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The present invention claims to protect an impedance matching system and method in power line communication, comprising: an impedance matching unit group, an impedance selection module, a channel selection module, and a signal detection module, wherein the impedance matching unit group is composed of a plurality of impedance matching units , each impedance matching unit is composed of a capacitor, an inductor and a varactor diode, and each impedance matching unit can perform impedance fine-tuning; the impedance selection module is used to complete the selection of the impedance matching unit, and is also used to complete the impedance matching unit. Impedance fine-tuning control; the channel selection module is used to complete the impedance matching unit combination selection between the power line and the signal detection module under the control of the impedance selection module; the signal detection module is used to monitor the magnitude of the received signal after each impedance matching selection. Evaluate and determine if the impedance matching option is the best option.
Description
technical field [0001] The invention belongs to the technical field of Internet of Things communication, and in particular relates to a power line adaptive impedance matching method. Background technique [0002] With the development of communication technology, various communication technologies are widely used in the Internet of Things. In order to monitor the user's electricity consumption information in real time, the electric power department created the electric meter reading business. At present, the most mature communication method in the electric meter reading business is the power line communication. In the design and use of the power line, although the laying of the power line itself is not for communication, it can be used as a communication channel, but it cannot meet the communication requirements well in many aspects. [0003] In a communication system, strict impedance matching is required when the signal is transmitted from the transceiver device to the cha...
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Login to View More IPC IPC(8): H04B3/54H04B3/56
CPCH04B3/54H04B3/56H04B2203/5425H04B2203/5462
Inventor 周红
Owner 重庆源联信息科技有限公司