Highway construction monitoring system based on Internet of Things

Abstract

The invention discloses a highway construction monitoring system based on the Internet of Things. The system comprises a signal receiving circuit, a frequency modulation filter circuit and a voltage stabilization output circuit, wherein the signal receiving circuit receives signals of a signal transmission channel input end for a control terminal in the highway construction monitoring system basedon the Internet of Things, the frequency modulation filter circuit receives output signals of the signal receiving circuit in two paths, in one path, frequency modulation is executed for the signalsthrough a frequency modulation circuit composed of a triode Q1, an inductor L4 and an adjustable capacitor C10, and in the other path, interference signals are filtered out through a disturbance filter circuit composed of an operational amplifier AR1, an operational amplifier AR3, a capacitor C8 and a capacitor C9, and the signals are input into an in-phase input end of an operational amplifier AR4, a difference circuit composed of the operational amplifier AR4, an operational amplifier AR5 and a variable resistor RP1 performs differential treatment for the signals, finally, the voltage stabilization output circuit performs voltage stabilization through a triode voltage stabilization circuit composed of a triode Q2 and a voltage stabilization tube D3 and then outputs the signals. The signals can be calibrated automatically and prevented from distortion.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to a highway construction monitoring system based on the Internet of Things. Background technique [0002] In order to improve the management level of road construction and improve the efficiency of road construction, a road construction monitoring system based on the Internet of Things has been researched and developed, which can monitor the progress of road construction in real time and remotely, so as to respond to various emergencies and make timely and effective responses. It greatly improves the monitoring level and construction efficiency of construction. However, the environmental factors of road construction change greatly, and at the same time, many high-frequency and high-voltage equipment are working on or around the construction site, which will cause the signal used by the control terminal in the road construction monitoring system based on the Internet of Things The ...

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Problems solved by technology

[0002] In order to improve the management level of highway construction and improve the efficiency of highway construction, a highway construction monitoring system based on the Internet of Things has been researched and developed, which can monitor the progress of highway construction in real time and remotely, so as to respond to various emergencies and make timely and effective responses. The monitoring level and construction efficiency of the construction are greatly improved. However, the environmental factors of the road construction change greatly, and at the same time, many high-frequency and high-voltage equipment are working on or around the construction site, which will cause the control terminal to use signals in the road construction monitoring system based on the Internet of Things. The frequency of the transmission channel is often abnormal during the transmission process, resulting in signal distortion

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