An Acquisition Control Circuit Used in Passenger Car Water Supply and Drainage Monitoring and Management System

Abstract

The invention discloses an acquisition control circuit for a bus water supply and drainage monitoring and management system. The acquisition control circuit is mainly composed of an embedded processor, a power supply circuit module, a JTAG interface module, an LED digital tube display module, an I2C communication module, a CAN bus module, an RS485 module, a signal input acquisition module, and multiple output signal driving modules. The signal input acquisition module includes an analog input unit and multiple digital switching input units. The beneficial effect is that an acquisition control circuit which is characterized in that the acquisition process of a sensor which outputs analog signals has a good isolation effect and the electrical parameters of output control signals can be adjusted flexibly is provided for a standardized, hierarchical, modular and networked water supply and drainage monitoring and management system.

Description

technical field [0001] The invention relates to an acquisition control circuit, in particular to an acquisition control circuit suitable for passenger car water supply and drainage monitoring and management systems. Background technique [0002] With the rapid development of railway passenger transport, the water supply and drainage system is required to have reasonable functions, reliable structure, high integration, and convenient maintenance. However, traditional water supply and drainage equipment or structures and management systems have been difficult to meet the above requirements. Therefore, according to industry norms or technical standards such as "TB10010-2008 Railway Water Supply and Drainage Design Code" and "Q / CR 15-2014 Railway Passenger Train Water Supply Equipment", combined with advanced "Internet +" and mature monitoring and management technology, The establishment of passenger car water supply and drainage monitoring and management system is of great sign...

AI Technical Summary

Problems solved by technology

[0009] (2) Low level of intelligence and integration

[0010] Existing water supply and drainage management mostly monitors individual equipment, and usually requires special personnel to be on duty. The automation of operations, statistics, and reports is low, and there is a lack of intelligent management methods such as online monitoring and remote control. In addition, although some sites install Intelligent monitoring equipment has been installed, such as water supply, water supply, sewage discharge, drainage and fire protection, etc., but there are many manufacturers, and their functions, standards and protocols are different, so it is difficult to carry out integrated centralization management, while bringing challenges to the management and maintenance of monitoring equipment

[0011] (3) Serious waste of water resources

Analyze the reasons. On the one hand, the water supply and drainage pipelines are long, have many branches, are prone to corrosion, and are buried 3-4 meters deep underground. Once damaged and leaked, it is not easy for the on-site staff to judge and detect them, and it is difficult to detect and treat leaks. , whenever there is a leakage point seeping out of the ground, digging everywhere without a clue, which leads to serious leakage and waste; cause unnecessary waste of water

[0013] (4) Serious water pollution, less water quality monitoring

[0015] (5) Low degree of automation and low operating efficiency

Its disadvantages are heavy workload of manual operation, low work efficiency, poor real-time monitoring, and it is difficult to meet the needs of large-scale data collection.

[0017] (6) Lack of fire water supervision

[0018] Fire-fighting water affects the safety of the entire station, and the existing water supply and drainage management is not enough for fire-fighting water management, resulting in low water pressure or even water shortage in many fire-fighting water pipes

[0019] (7) Difficulty in emergency response

In terms of the design of the acquisition control circuit, the prior art mainly has the following defects: (1) The signal isolation effect is poor during the acquisition process of the sensor whose output signal is an analog quantity (the digital quantity signal acquisition is usually realized by an optocoupler with better isolation effect) ; (2) The control effect on solenoid valves and other equipment is poor, and the control accuracy is not high. It is often only a simple control of the solenoid valve to turn off or conduct, and it is impossible to achieve accurate flow control according to needs.

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