A control system and control method for multi-channel seawater nutrient salt detector based on CAN bus

Abstract

The invention discloses a CAN bus-based multi-channel seawater nutrient detector control system and control method. The control system includes a control node and a parameter acquisition node, wherein the control node includes a single-chip minimum system module with a built-in microcontroller, The filter pump drive module, the float level switch, the data storage module, the CAN communication module and the host computer communication module are electrically connected to the microcontroller, and the power management module in the control node supplies power to the control node. The control system disclosed in the present invention aims to accurately measure the concentration of five nutrient salt parameters at the same time, divides the whole system into a control node and a parameter acquisition node, and decomposes a large function into various sub-functions to realize respectively; the hardware design adopts The idea of ​​modular design is to combine various modules to achieve the set goals, which not only makes the control system small in size, high in integration and automation, but also facilitates subsequent function additions and system upgrades.

Description

technical field [0001] The invention belongs to the field of instruments and meters, in particular to a CAN bus-based multi-channel seawater nutrient detector control system and control method in the field. Background technique [0002] Seawater nutrient salt is an essential nutrient element for the growth of marine plankton and the material basis for its life activities. As one of the basic parameters of marine biogeochemical research, seawater nutrients usually refer to five kinds of nitrate, nitrite, silicate, phosphate and ammonium salt in seawater. [0003] The traditional detection of nutrient content is based on the on-site sampling-laboratory analysis method of the survey ship. This method has disadvantages such as poor real-time performance, easy contamination of samples, waste of manpower and material resources, and the on-site sampling-laboratory analysis method cannot provide continuous fixed-point analysis. The measurement data cannot timely reflect the rapid c...

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Problems solved by technology

[0003] The traditional detection of nutrient content is based on the on-site sampling-laboratory analysis method of the survey ship. This method has disadvantages such as poor real-time performance, easy contamination of samples, waste of manpower and material resources, and the on-site sampling-laboratory analysis method cannot provide continuous fixed-point analysis. Measurement data cannot timely reflect the rapid changes in nutrient content when ecological and hydrological phenomena such as red tides and rainfall occur

At present, in order to solve this problem, researchers at home and abroad have designed and developed different automatic analyzers for seawater nutrients, but most of them are still in the stage of laboratory measurement, and the five nutrient parameters can only be measured sequentially, not simultaneously. It takes a long time to complete a standard process, which cannot meet the requirements for efficient and rapid measurement of nutrient parameters

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