A computer data transmission system based on the Internet of Things

Abstract

The invention discloses a computer data transmission system based on the Internet of Things. The system comprises a frequency acquisition circuit, a feedback calibration circuit and a filtering emission circuit. The frequency acquisition circuit acquires the signal frequency of the input end of the analog signal transmission channel. The feedback calibration circuit uses an operational amplifier AR1 to amplify a signal. Meanwhile, a capacitor C3, a capacitor C5, a resistor R4 and a resistor R6 are used for forming a frequency selection circuit to screen out a signal with a single frequency. Atriode Q3, a capacitor C6, a capacitor C7 and a capacitor C10 are used to form a frequency modulation circuit to adjust the signal frequency, and then the signal frequency is input into the filteringemission circuit. The comparator AR2 compares output signals of the frequency selection circuit and the frequency modulation circuit as trigger signals of the feedback triode Q1 and the triode Q2. Finally, the filter transmitting circuit uses an inductor L2, a capacitor C8 and a capacitor C9 to form a filter circuit to filter the signals, and the signals are error correction signals of the computer data transmission system control terminal based on the Internet of Things.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to a computer data transmission system based on the Internet of Things. Background technique [0002] At present, with the continuous development of science and technology, the computer data transmission system based on the Internet of Things is mainly composed of a host computer (host) or data terminal equipment (DTE-data terminal equipment), data circuit terminal equipment and analog transmission channels, while computer data transmission The system determines the performance of the development of the Internet of Things. However, the analog transmission channel is the channel for the computer-controlled terminal based on the Internet of Things to receive the output signal of the analog signal acquisition module. During the transmission of the signal, due to the interference of the same frequency signal or strong magnetic field, it will usually cause The frequency hopping of the s...

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Problems solved by technology

[0002] At present, with the continuous development of science and technology, the computer data transmission system based on the Internet of Things is mainly composed of a host computer (host) or data terminal equipment (DTE-data terminal equipment), data circuit terminal equipment and analog transmission channels, while computer data transmission The system determines the performance of the development of the Internet of Things. However, the analog transmission channel is the channel for the computer-controlled terminal based on the Internet of Things to receive the output signal of the analog signal acquisition module. During the transmission of the signal, due to the interference of the same frequency signal or strong magnetic field, it usually makes the The frequency hopping of the signal causes a large error in the signal received by the computer-controlled terminal based on the Internet of Things, thus making a wrong analysis. Therefore, it is necessary to monitor the signal in the analog signal transmission channel in real time

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