阅读说明：本技术 一种具有自清洗功能的多参数水质在线监测系统 (Multi-parameter water quality online monitoring system with self-cleaning function ) 是由 王刚 李志� 孙晨光 耿同志 许刚 白亚龙 杨凌云 张子惠 于 2019-09-04 设计创作，主要内容包括：本发明提供一种具有自清洗功能的多参数水质在线监测系统,该系统包括控制及分析显示模块、水泵、清洗水泵、清洗气泵、三通阀、多位阀、第一导水管、第二导水管、流通槽以及出水管,所述控制及分析显示模块通过控制所述多位阀的阀位切换实现所述水泵、所述第一导水管、所述流通槽、所述第二导水管和所述出水管的连通或实现所述三通阀的出口、所述第二导水管、所述流通槽、所述第一导水管和所述出水管的连通；每个流通槽内设置有水质监测传感器,所述控制及分析显示模块与所述水质监测传感器连接,用于读取所述水质监测传感器输出的水质监测数据信号并进行统计、分析和管理,并通过无线传输模块上传水质监测数据至监控平台。(The invention provides a multi-parameter water quality online monitoring system with a self-cleaning function, which comprises a control and analysis display module, a water pump, a cleaning air pump, a three-way valve, a multi-position valve, a first water guide pipe, a second water guide pipe, a circulation groove and a water outlet pipe, wherein the control and analysis display module realizes the communication of the water pump, the first water guide pipe, the circulation groove, the second water guide pipe and the water outlet pipe or the communication of an outlet of the three-way valve, the second water guide pipe, the circulation groove, the first water guide pipe and the water outlet pipe by controlling the valve position switching of the multi-position valve; and a water quality monitoring sensor is arranged in each circulation groove, and the control and analysis display module is connected with the water quality monitoring sensors and used for reading water quality monitoring data signals output by the water quality monitoring sensors, counting, analyzing and managing the water quality monitoring data signals and uploading the water quality monitoring data to the monitoring platform through the wireless transmission module.)

1. The utility model provides a multi-parameter quality of water on-line monitoring system with self-cleaning function which characterized in that: comprises a control and analysis display module, a water pump, a cleaning air pump, a three-way valve, a multi-position valve, a first water guide pipe, a second water guide pipe, a plurality of circulation grooves and a water outlet pipe,

the first water guide pipe and the second water guide pipe are respectively communicated with each circulation groove, the cleaning water pump and the cleaning air pump are respectively connected with two inlets of the three-way valve, an outlet of the three-way valve, the water outlet pipe, the second water pipe, the water pump, the water outlet pipe and the first water guide pipe are respectively connected with the multi-position valve, and the communication of the water pump, the first water guide pipe, the plurality of circulation grooves, the second water guide pipe and the water outlet pipe or the communication of the outlet of the three-way valve, the second water guide pipe, the plurality of circulation grooves, the first water guide pipe and the water outlet pipe is realized according to the valve position switching of the multi-position valve;

the control and analysis display module is respectively connected with the water pump, the cleaning air pump, the three-way valve and the multi-position valve so as to control the opening and closing of the water pump, the cleaning air pump and the three-way valve and control the valve position switching of the multi-position valve;

all be provided with the water quality monitoring sensor in every circulation groove, set up different water quality monitoring sensors in the circulation groove of difference, control and analysis display module with the water quality monitoring sensor is connected for read the water quality monitoring data signal of water quality monitoring sensor output carries out statistics, analysis and management to upload water quality monitoring data to monitor platform through wireless transmission module.

2. The multi-parameter water quality on-line monitoring system with self-cleaning function of claim 1, characterized in that:

the control and analysis display module comprises a mainboard control circuit, a multi-channel signal conditioning circuit, a cleaning air pump control circuit, a water pump control circuit, a cleaning water pump control circuit, a multi-position valve control circuit, an industrial computer all-in-one machine and a power supply module,

the signal conditioning circuit is used for conditioning the water quality monitoring data signal output by the water quality monitoring sensor;

the mainboard control circuit is connected with the signal conditioning circuit through an Sx multi-core wire so as to collect a water quality monitoring data signal conditioned by the signal conditioning circuit;

the main board control circuit is connected with the water pump control circuit through a C1 multi-core control line so as to control the opening and closing of the cleaning water pump;

the main board control circuit is connected with the cleaning air pump control circuit through a C2 multi-core control line so as to control the timing opening and closing of the cleaning air pump;

the main board control circuit is connected with the washing water pump control circuit through a C3 multi-core control line so as to control the timing opening and closing of the washing water pump;

the main board control circuit is connected with the multi-position valve control circuit through a C4 multi-core control line so as to control the valve position switching of the multi-position valve;

the mainboard control circuit transmits control signals and water quality monitoring data signals with the industrial computer all-in-one machine through signal wires;

the industrial computer all-in-one machine is used for outputting control signals, summarizing, analyzing and displaying the water quality monitoring data signals subjected to signal conditioning;

the power supply module respectively provides 12VDC and 24VDC for the industrial all-in-one computer and the mainboard control circuit.

3. The multi-parameter water quality on-line monitoring system with self-cleaning function of claim 2, characterized in that: the water quality monitoring sensor is a pH sensor, a residual chlorine sensor, a dissolved oxygen sensor or a conductivity sensor.

4. The multi-parameter water quality on-line monitoring system with self-cleaning function of claim 3, characterized in that: the signal conditioning circuit comprises a pH signal conditioning circuit, a residual chlorine signal conditioning circuit, a dissolved oxygen signal conditioning circuit and a conductivity signal conditioning circuit, wherein the pH signal conditioning circuit is correspondingly connected with the pH sensor, the residual chlorine signal conditioning circuit is correspondingly connected with the residual chlorine sensor, the dissolved oxygen signal conditioning circuit is correspondingly connected with the dissolved oxygen sensor, and the conductivity signal conditioning circuit is correspondingly connected with the conductivity sensor.

Technical Field

The invention relates to the field of water quality monitoring, in particular to a multi-parameter water quality online monitoring system with a self-cleaning function.

Background

The existing municipal drinking water quality monitoring mainly depends on two modes of manual sample sending and on-line detection, wherein the manual sample sending refers to that a worker collects a water sample and then sends the water sample to a detection mechanism for detection, or the personnel of the detection mechanism carry portable detection equipment to sample on site for detection, and the defects of poor effectiveness, high cost and the like exist; in the traditional on-line detection, a separate sensor is mostly adopted for water sample monitoring, as shown in fig. 1, each sensor needs to be provided with a meter head, the occupied space is large, the cost is high, and the unified management and processing of data are not facilitated; and in the measuring process, the flow rate of the water sample to be measured is slow, certain dirt is easily deposited in the pipeline and the sensor, the personnel are required to clean, operate and maintain regularly, and the cost is further increased.

In order to solve the above problems, people are always seeking an ideal technical solution.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a multi-parameter water quality online monitoring system with a self-cleaning function, which has the advantages of low cost, small occupied space and capability of uniformly managing monitoring data.

In order to achieve the purpose, the invention adopts the technical scheme that: a multi-parameter water quality on-line monitoring system with a self-cleaning function comprises a control and analysis display module, a water pump, a cleaning air pump, a three-way valve, a multi-position valve, a first water guide pipe, a second water guide pipe, a plurality of circulation grooves and a water outlet pipe,

the cleaning water pump and the cleaning air pump are respectively connected with two inlets of the three-way valve, the first water guide pipe and the second water guide pipe are respectively communicated with each circulation groove, an outlet of the three-way valve, the water outlet pipe, the second water pipe, the water pump, the water outlet pipe and the first water guide pipe are respectively connected with the multi-position valve, and the communication of the water pump, the first water guide pipe, the plurality of circulation grooves, the second water guide pipe and the water outlet pipe or the communication of the outlet of the three-way valve, the second water guide pipe, the plurality of circulation grooves, the first water guide pipe and the water outlet pipe are realized according to the valve position switching of the multi-position valve;

the control and analysis display module is respectively connected with the water pump, the cleaning air pump, the three-way valve and the multi-position valve so as to control the opening and closing of the water pump, the cleaning air pump and the three-way valve and control the valve position switching of the multi-position valve;

and a water quality monitoring sensor is arranged in each circulation groove, and the control and analysis display module is connected with the water quality monitoring sensors and used for reading water quality monitoring data signals output by the water quality monitoring sensors, counting, analyzing and managing the water quality monitoring data signals and uploading the water quality monitoring data to the monitoring platform through the wireless transmission module.

Based on the above, the control and analysis display module comprises a mainboard control circuit, a multi-channel signal conditioning circuit, a cleaning air pump control circuit, a water pump control circuit, a cleaning water pump control circuit, a multi-position valve control circuit, an industrial computer all-in-one machine and a power supply module,

the signal conditioning circuit is used for conditioning the water quality monitoring data signal output by the water quality monitoring sensor;

the mainboard control circuit is connected with the signal conditioning circuit through an Sx multi-core wire so as to collect a water quality monitoring data signal conditioned by the signal conditioning circuit;

the main board control circuit is connected with the water pump control circuit through a C1 multi-core control line so as to control the opening and closing of the cleaning water pump;

the main board control circuit is connected with the cleaning air pump control circuit through a C2 multi-core control line so as to control the timing opening and closing of the cleaning air pump;

the main board control circuit is connected with the washing water pump control circuit through a C3 multi-core control line so as to control the timing opening and closing of the washing water pump;

the main board control circuit is connected with the multi-position valve control circuit through a C4 multi-core control line so as to control the valve position switching of the multi-position valve;

the mainboard control circuit transmits control signals and water quality monitoring data signals with the industrial computer all-in-one machine through signal wires;

the industrial computer all-in-one machine is used for outputting control signals, summarizing, analyzing and displaying the water quality monitoring data signals subjected to signal conditioning;

the power supply module respectively provides 12VDC and 24VDC for the industrial all-in-one computer and the mainboard control circuit.

Based on the above, the water quality monitoring sensor is a pH sensor, a residual chlorine sensor, a dissolved oxygen sensor or a conductivity sensor, and different sensors are arranged in different circulation tanks.

Based on the above, the signal conditioning circuit includes pH signal conditioning circuit, chlorine residue signal conditioning circuit, dissolved oxygen signal conditioning circuit and conductivity signal conditioning circuit, pH signal conditioning circuit corresponds the connection the pH sensor, chlorine residue signal conditioning circuit corresponds the connection the chlorine residue sensor, dissolved oxygen signal conditioning circuit corresponds the connection the dissolved oxygen sensor, conductivity signal conditioning circuit corresponds the connection the conductivity sensor.

Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and particularly, the invention realizes the direct reading of data of various water quality monitoring sensors through the control and display analysis module, saves the original transmitter, and has the advantages of small occupied space, low cost and convenient management and statistical analysis of water quality monitoring data; meanwhile, the bottom of the pipeline or the sensor is periodically and automatically cleaned by adopting a high-pressure water body, so that the deposition of dirt on the sensitive part of the sensor and the pipeline is prevented, and the manual operation and maintenance cost and the equipment replacement cost are further reduced.

Drawings

Fig. 1 is a schematic structural diagram of a conventional on-line detection using a separate sensor.

Fig. 2 is a schematic block diagram of the present invention.

FIG. 3 is an internal schematic block diagram of the control and analysis display module of the present invention.

Fig. 4 is a circuit schematic of the pH conditioning circuit of the present invention.

FIG. 5 is a schematic circuit diagram of a residual chlorine conditioning circuit of the present invention.

FIG. 6 is a schematic circuit diagram of the temperature compensation circuit of the present invention

Fig. 7 is a circuit diagram of the motherboard control circuit of the present invention.

Fig. 8 is a circuit schematic diagram of the air pump control circuit of the present invention.

FIG. 9 is a schematic circuit diagram of the main board of the multi-way valve control circuit of the present invention.

Fig. 10 is a schematic of the remaining circuitry of the multi-port valve control circuit of the present invention.

Detailed Description

The technical solution of the present invention is further described in detail by the following embodiments.

As shown in FIG. 2, the present invention provides a multi-parameter water quality on-line monitoring system with self-cleaning function, which comprises a control and analysis display module, a water pump, a cleaning air pump, a three-way valve, a multi-position valve, a first water conduit, a second water conduit, a water outlet pipe and a plurality of circulation grooves,

the first water guide pipe and the second water guide pipe are respectively communicated with each circulation groove, the cleaning water pump and the cleaning air pump are respectively connected with two inlets of the three-way valve, an outlet of the three-way valve, the water outlet pipe, the second water pipe, the water pump, the water outlet pipe and the first water guide pipe are respectively connected with the multi-position valve, and the communication of the water pump, the first water guide pipe, the plurality of circulation grooves, the second water guide pipe and the water outlet pipe or the communication of the outlet of the three-way valve, the second water guide pipe, the plurality of circulation grooves, the first water guide pipe and the water outlet pipe is realized according to the valve position switching of the multi-position valve;

the control and analysis display module is respectively connected with the water pump, the cleaning air pump, the three-way valve and the multi-position valve so as to control the opening and closing of the water pump, the cleaning air pump and the three-way valve and control the valve position switching of the multi-position valve;

a water quality monitoring sensor is arranged in each circulation groove, the water quality monitoring sensor is a pH sensor, a residual chlorine sensor, a dissolved oxygen sensor or a conductivity sensor, and different sensors are arranged in different circulation grooves;

the control and analysis display module is connected with the water quality monitoring sensor and used for reading the water quality monitoring data signals output by the water quality monitoring sensor, carrying out statistics, analysis and management and uploading the water quality monitoring data to the monitoring platform through the wireless transmission module.

The working principle of the multi-parameter water quality on-line monitoring system provided by the invention is as follows:

firstly, when the multi-position valve is in an initial state, the water pump is communicated with the first water guide pipe, and the water outlet pipe is communicated with the second water guide pipe; and after the control and analysis display module controls the multi-position valve to switch valve positions, the water outlet pipe is communicated with the first water guide pipe, and the outlet of the three-way valve is communicated with the second water guide pipe.

The control and analysis display module controls the water pump to be switched on and off to pump water from a water source to be detected, the water pump, the first water guide pipe, the plurality of circulation grooves, the second water guide pipe and the water outlet pipe form a water sample channel to be detected, and a water quality monitoring sensor in the circulation grooves monitors the water quality of the water sample to be detected; the control and analysis display module directly reads water quality monitoring data signals output by the water quality monitoring sensors through a measuring line, analyzes and processes the water quality monitoring data signals after the water quality monitoring data signals are collected and displayed, and sends the water quality monitoring data signals to the monitoring platform through the wireless transmission module. And after the water quality monitoring is finished, the control and analysis display module controls the water pump to be closed.

When the multi-parameter water quality on-line monitoring system runs for a period of time, certain dirt can be deposited in the first water guide pipe, the second water guide pipe, the plurality of circulation grooves and the water quality monitoring sensor, the control and analysis display module controls the multi-position valve to switch valve positions and controls the cleaning air pump, the cleaning water pump and the three-way valve to be opened and closed, and the cleaning air pump, the cleaning water pump, the three-way valve, the second water guide pipe, the plurality of circulation grooves, the first water guide pipe and the water outlet pipe form a high-pressure cleaning channel so as to perform high-pressure water body backwashing on each water quality monitoring sensor, each circulation groove, the first water guide pipe and the second water guide pipe.

The invention realizes the direct reading of data of various water quality monitoring sensors through the control and display analysis module, saves the original transmitter, and has the advantages of small occupied space, low cost and convenient management and statistical analysis of water quality monitoring data; meanwhile, the bottom of the pipeline or the sensor is periodically and automatically cleaned by adopting a high-pressure water body, so that the deposition of dirt on the sensitive part of the sensor and the pipeline is prevented, and the manual operation and maintenance cost and the equipment replacement cost are further reduced.

Specifically, as shown in fig. 3, the control and analysis display module includes a main board control circuit, a multi-channel signal conditioning circuit, a cleaning air pump control circuit, a water pump control circuit, a cleaning water pump control circuit, a multi-position valve control circuit, an industrial computer integrated machine and a power supply module,

preferably, the signal conditioning circuit comprises a pH signal conditioning circuit, a residual chlorine signal conditioning circuit, a dissolved oxygen signal conditioning circuit and a conductivity signal conditioning circuit, the pH signal conditioning circuit is correspondingly connected with the pH sensor, the residual chlorine signal conditioning circuit is correspondingly connected with the residual chlorine sensor, the dissolved oxygen signal conditioning circuit is correspondingly connected with the dissolved oxygen sensor, and the conductivity signal conditioning circuit is correspondingly connected with the conductivity sensor and is used for performing signal conditioning on the water quality monitoring data signal output by the water quality monitoring sensor; fig. 4 is a schematic circuit diagram of the pH signal conditioning circuit, in which an analog signal output by the pH sensor is converted into a digital signal by a four-way operational amplifier LMC 660; fig. 5 is a schematic circuit diagram of a residual chlorine signal conditioning circuit, in which an analog signal output by the residual chlorine sensor is converted into a digital signal by a four-way operational amplifier LMC 660; the circuit diagrams of the dissolved oxygen signal conditioning circuit and the conductivity signal conditioning circuit are similar and are not described in detail herein.

Preferably, each circulation tank is further provided with a temperature sensor, and each signal conditioning circuit correspondingly comprises a temperature compensation circuit, as shown in fig. 6.

The mainboard control circuit is connected with the signal conditioning circuit through an Sx multi-core wire so as to collect the water quality monitoring data signal conditioned by the signal conditioning circuit, and a circuit schematic diagram of the mainboard control circuit is shown in fig. 7, wherein the mainboard control circuit adopts an STM32F410CBT6 chip.

The main board control circuit is connected with the water pump control circuit through a C1 multi-core control line so as to control the opening and closing of the water pump.

The main board control circuit is connected with the cleaning air pump control circuit through a C2 multi-core control line to control the timing opening and closing of the cleaning air pump, and fig. 8 is a circuit schematic diagram of the air pump control circuit; the cleaning air pump control circuit comprises a timing chip NE555, an optical coupler chip LTV816, a first MOS tube and a second MOS tube, the timing chip NE555 outputs level signals at regular time to a source electrode of the second MOS tube, a drain electrode of the second MOS tube is connected with a 12V power supply through a breakdown prevention diode and an air pump interface respectively, a grid electrode of the second MOS tube is connected with a drain electrode of the first MOS tube and a ground pin of the timing chip NE555, a cathode pin of the optical coupler chip LTV816 receives control signals output by the mainboard control circuit, an emitter pin of the optical coupler chip LTV816 is connected with the source electrode of the first MOS tube, and a grid electrode of the first MOS tube is grounded.

The main board control circuit is connected with the washing water pump control circuit through a C3 multi-core control line so as to control the opening and closing of the washing water pump.

The main board control circuit is connected with the multi-position valve control circuit through a C4 multi-core control line to control the valve position switching of the multi-position valve, and fig. 9 is a schematic diagram of a main board circuit of the multi-position valve control circuit, wherein the main board circuit adopts an STM32F410CBT6 chip, and the STM32F410CBT6 chip outputs M0-M7 signals according to control signals of the main board control circuit; fig. 10 is a schematic diagram of other circuits of the multi-position valve control circuit, which specifically includes 8 opto-coupler chip LTV816, where each of signals M0-M7 is connected to a cathode pin of one opto-coupler chip LTV816 through a resistor, an anode of the opto-coupler chip LTV816 is connected to a 3.3V power supply, a collector of the opto-coupler chip LTV816 is connected to a 5Viso power supply, an emitter of the opto-coupler chip LTV816 is connected to ground through a resistor, an emitter of the opto-coupler chip LTV816 is also connected to a source of the MOS transistor, and a gate of the MOS transistor is grounded; and the drain electrode of the MOS tube is connected with a 12V power supply through a multi-position valve interface.

And the mainboard control circuit transmits control signals and water quality monitoring data signals with the industrial computer all-in-one machine through signal lines.

The industrial computer all-in-one machine is used for outputting control signals, summarizing, analyzing and displaying the water quality monitoring data signals conditioned by the signals.

The power supply module respectively provides 12VDC and 24VDC for the industrial all-in-one computer and the mainboard control circuit.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.