Portable water quality monitor

Abstract

The invention provides a portable water quality monitor, which comprises an upper computer and a lower computer, wherein the upper computer and the lower computer are connected through a communication middleware or a wireless communication part, and the upper computer comprises an upper computer human-computer interface part; the lower computer comprises a singlechip, a data acquisition part, an expanded SDRAM (synchronous dynamic random access memory) part and a lower computer human-computer interface part, the data acquisition part is provided with an SDI (standard data interface)-12 sensor connected with the singlechip through a flexible SDI-12 interface bus, and the SDI-12 interface bus is connected with at least one SDI-12 sensor through a successive type interface; the wireless communication part comprises a GPRS (General Packet Radio Service) wireless module; and a power source part comprises a selfcontained power source, a solar energy power source and a power source management module used for switching the power source into the selfcontained power source when voltage provided by the solar energy power source is not sufficient to maintain the work of the water quality monitor. In the invention, the number of sensors accessed into the portable water quality monitor is not limited, the data transmission is simple, and the data storage capacity is large.

Description

Technical field [0001] The invention relates to the field of environmental monitoring, and relates to a water quality monitor, in particular to a portable water quality monitor. Background technique [0002] Water is a natural resource that humans rely on for survival. With the increasing environmental pollution, people have put forward higher requirements for on-site water quality monitoring technology. Water quality monitoring instruments are mainly used to monitor various parameters such as water conductivity, temperature, PH value and dissolved oxygen. [0003] At present, the common method is on-site sampling and laboratory analysis, which is costly and cannot guarantee the real-time and reliability of monitoring. With the development of environmental protection in China, although water quality monitoring technology has made great progress, there are still some shortcomings: (1) The existing water quality monitors generally use multiple channels when processing multi-sensor s...

AI Technical Summary

Problems solved by technology

With the development of my country's environmental protection work, although the technology of water quality monitoring has made great progress, there are still some shortcomings: (1) when the existing water quality monitors process multi-sensor signals, they generally use multi-channel Analog switches are used to select the parameters to be measured, which limits the number of connected sensors, thereby limiting the number of water quality parameters collected; (2) When there are data collected by multiple sensors, the existing The realization of data transmission between the water quality monitoring instrument and the PC is relatively complicated. At this time, each port needs to be set separately, and it is easy to cause instability of the program and data transmission; (3) The existing water quality monitoring instrument has a small data storage capacity , and generally without the support of the operating system, the ability to process tasks in parallel with multi-threading and multi-tasking is not strong, and it is also not conducive to the expansion of functions

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