Flow control circuit for water gathering terminal

Abstract

In a flow control circuit for a water gathering terminal provided by the invention, a throughput-controllable amplification circuit changes the network throughput signal of the water gathering terminal server detected in real time from a deviation value reflecting the degree of network congestion to the resistance of a T-shaped feedback network to realize the controllable amplification of the amplification circuit, so that the network congestion signal is effectively amplified and transmitted to a stage circuit, the control voltage thereof enters a voltage-controlled oscillation circuit and generates an inversely linked square wave of a certain frequency after the phase inversion of an operational amplifier AR3, the integration of an operational amplifier AR4 and the comparison of an operational amplifier AR5, and the square wave signal finally enters a dithering elimination circuit and enters a hysteresis comparison circuit composed of an operational amplifier AR6 and resistors R20 and R22 after filtering and pull-up for comparison to be connected to the RTS and CTS ends of the communication interface on the water gathering terminal server after further eliminating the square wavejitter, so as to change the working interval of the RTS and CTS of the communication interface, which implements the flow control of data storage and access to the water gathering terminal server from the hardware.

Description

technical field [0001] The invention relates to the technical field of water quality monitoring, in particular to a flow control circuit for a water service aggregation terminal. Background technique [0002] The water supply status is directly related to people's living standards and physical health. The sanitation of urban water supply has become a common concern of people. In order to ensure the quality of water supply and facilitate users to query water consumption, water affairs groups usually set up intelligent integrated aggregation terminals, specifically Set up the water collection server to extract the data collected by the remote site. After the extraction, the data enters the water analysis server for standardized processing, and finally enters the resource sharing server to realize water quality monitoring, management and query services. When the server host fails, it can be repaired again, or When there is a large number of user visits in a certain period of ti...

AI Technical Summary

Problems solved by technology

[0002] The water supply status is directly related to people's living standards and physical health. The sanitation of urban water supply has become a common concern of people. In order to ensure the quality of water supply and facilitate users to query water consumption, water affairs groups usually set up intelligent integrated aggregation terminals, specifically Set up the water collection server to extract the data collected by the remote site. After the extraction, the data enters the water analysis server for standardized processing, and finally enters the resource sharing server to realize water quality monitoring, management and query services. When the server host fails, it can be repaired again, or When there is a large number of user visits in a certain period of time, the amount of information received by the server host will be much greater than the normal throughput, causing the server host to receive signal disorder and congestion, which will seriously cause the host to repeatedly crash, affecting the efficiency and stability of the water aggregation terminal server running

Images