Multi-carrier multi-electric-quantity transducer in power plant

Abstract

The invention relates to a multi-carrier multi-electric-quantity transducer in a power plant. A system is composed of antennae, a bluetooth module, a core singlechip, a keyboard, a liquid crystal display, alarm equipment, a carrier module and a carrier channel, wherein, the bluetooth module is connected with the I / O interface of the core singlechip; the antenna receives the information transmitted by a mobile device; the information is input to the core singlechip through the keyboard, and is displayed by a liquid crystal display, when the set quantity value is exceeded, the alarm equipment alarms; the signal output by the core singlechip is a serial output signal; the high-speed information source information is converted into N-path low-speed parallel data streams in the carrier module;the N-path low-speed parallel data streams are modulated by N numbered mutually orthometric carriers; and N-path modulated signals are added to obtain a transmitting signal which is converted into multiple carriers, and the multiple carriers are transmitted into a centralized control room through the carrier channel. The invention has the beneficial effects of lower cost, strong interference resistance, high confidential performance, no needing of frequency application and being beneficial for short-distance electric quantity transducers in the power plant popularized in a large scale and notinfluenced by obstacles.

Description

technical field [0001] The invention belongs to the field of power measurement and computer application, relates to the orthogonal frequency division multiplexing communication technology of a power plant, and can use the multi-carrier communication technology to effectively solve the power plant multi-carrier multi-power transmitter for power plant multi-power measurement data . Background technique [0002] The current power plant information transmission system is mainly designed for a certain application, such as detection signal, control signal, voice communication, mobile phone and high-speed transmission on the LAN, etc. The communication system of the power plant has internal and external interference, and the communication system has many channels. Unfavorable factors such as path effect, compatibility of multiple modulation modes, and fading. [0003] There are many types and systems of information processing equipment in power plants, including digital, analog, a...

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Problems solved by technology

[0002] The current power plant information transmission system is mainly designed for a certain application, such as detection signal, control signal, voice communication, mobile phone and high-speed transmission on the LAN, etc. The communication system of the power plant has internal and external interference, and the communication system has many channels. Unfavorable factors such as path effect, compatibility of multiple modulation modes, and fading

[0003] There are many types and systems of information processing equipment in power plants, including digital, analog, and switch types, etc., which need to be converted from each other; usually, compatibility issues between the systems of various equipment manufacturers are rarely considered, and there is no unified standard; when running alone , in the same working area, it is not easy to convert each other in the process of information processing and transmission within the system; the communication of power plants in my country is divided into wired communication and wireless communication according to the signal propagation mode, and divided into voice communication and image monitoring communication according to the content of the signal

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