阅读说明：本技术 一种用于地表水或污染源的户外水质在线自动监测系统 (Outdoor water quality online automatic monitoring system for surface water or pollution source ) 是由 张健 施元 于 2020-05-25 设计创作，主要内容包括：本发明涉及水质监测系统,具体涉及一种用于地表水或污染源的户外水质在线自动监测系统,包括保温机柜,保温机柜内部固定安装有工控主机、工控主板、水质主板以及与工控主板相连的电控单元,保温机柜内部设有试剂存储单元、试剂盒、超声波驱动器、水质留样单元,保温机柜内底部安装有空气压缩单元,保温机柜内部固定安装有水质分析单元、多参数测量单元以及用于选择连通水质分析单元、多参数测量单元的管路单元；本发明提供的技术方案能够有效克服现有技术所存在的集成度较低、不具有自清洗功能的缺陷。(The invention relates to a water quality monitoring system, in particular to an outdoor water quality online automatic monitoring system for surface water or a pollution source, which comprises a heat preservation cabinet, wherein an industrial control host, an industrial control mainboard, a water quality mainboard and an electric control unit connected with the industrial control mainboard are fixedly arranged in the heat preservation cabinet; the technical scheme provided by the invention can effectively overcome the defects of low integration level and no self-cleaning function in the prior art.)

1. An outdoor water quality on-line automatic monitoring system for surface water or pollution sources is characterized in that: the heat preservation system comprises a heat preservation cabinet (1), wherein an industrial control host (4), an industrial control mainboard (5), a water quality mainboard (20) and an electric control unit (6) connected with the industrial control mainboard (5) are fixedly arranged in the heat preservation cabinet (1), a reagent storage unit (9), a kit (11), an ultrasonic driver (10) and a water quality sample retention unit (12) are arranged in the heat preservation cabinet (1), and an air compression unit (15) is arranged at the bottom in the heat preservation cabinet (1);

the water quality analysis unit (16), the multi-parameter measurement unit (17) and the pipeline unit (18) used for selectively communicating the water quality analysis unit (16) and the multi-parameter measurement unit (17) are fixedly installed in the heat preservation cabinet (1).

2. The outdoor water quality on-line automatic monitoring system for surface water or pollution sources according to claim 1, characterized in that: the water quality analysis unit (16) comprises a mounting plate (1603), wherein an infrared metering assembly (1609), a multi-way valve (1611), a digestion assembly (1601) and a colorimetric assembly (1602) are fixedly mounted on the mounting plate (1603);

the infrared metering assembly (1609) is connected with the multi-way valve (1611), and the multi-way valve (1611) is connected with the digestion assembly (1601) through the high-pressure separating valve (1612).

3. The outdoor water quality on-line automatic monitoring system for surface water or pollution sources according to claim 2, characterized in that: the colorimetric assembly (1602) is provided with a colorimetric cover (1604), the high-pressure separation valve (1612) is fixed on the mounting plate (1603) through a separation valve bracket (1605), and the multi-way valve (1611) is provided with an indicator plate (1606);

the infrared metering assembly (1609) comprises a peristaltic pump (1607) for pumping liquid, and the peristaltic pump (1607) is connected with a driver (1610).

4. The outdoor water quality on-line automatic monitoring system for surface water or pollution sources according to claim 1, characterized in that: the multi-parameter measuring unit (17) comprises a multi-parameter water tank (1701) and a sand settling tank (1708), wherein a multi-parameter probe (1706), a sampling valve (1702) and a water feeding elbow (1713) are arranged on the multi-parameter water tank (1701), and a stainless steel joint (1704), an ultrasonic cleaning probe (1705), a liquid level sensor (1709), a high-precision filter (1710) and a water sample cup (1714) are arranged on the sand settling tank (1708);

be equipped with probe belt cleaning device (1707) on multi-parameter probe (1706), probe belt cleaning device (1707) links to each other with air compression unit (15), ultrasonic cleaning probe (1705) link to each other with ultrasonic driver (10) and wash multi-parameter water tank (1701), high accuracy filter (1710), water sample cup (1714).

5. The outdoor water quality on-line automatic monitoring system for surface water or pollution sources according to claim 4, characterized in that: the multi-parameter water tank (1701) is provided with a multi-parameter cover plate (1711), the sand settling box (1708) is provided with a sand settling box cover plate (1712), and the multi-parameter cover plate (1711) and the sand settling box cover plate (1712) are provided with cover plate handles (1703).

6. The outdoor water quality on-line automatic monitoring system for surface water or pollution sources according to claim 1, characterized in that: the pipeline unit (18) comprises a pipeline mounting plate (1801), a pipe fitting (1803), an ultrasonic algae removal probe (1804), a manual ball valve (1805), a full-automatic valve (1806), a sampling pump (1807) and a water sample connector (1808), and the ultrasonic algae removal probe (1804) is connected with the ultrasonic driver (10);

and a multi-parameter water tank (1701) and a sand setting tank (1708) in the multi-parameter measuring unit (17) are fixedly mounted on the pipeline mounting plate (1801).

7. The outdoor water quality on-line automatic monitoring system for surface water or pollution sources according to claim 6, characterized in that: the sampling pump (1807) is connected between the sand depositing box (1708) and the water sample cup (1714) in the multi-parameter measuring unit (17), and the mounting plate (1801) is provided with a ventilating fan (1802).

8. The outdoor water quality on-line automatic monitoring system for surface water or pollution sources according to claim 1, characterized in that: the UPS power supply (8) for uninterrupted power supply is arranged inside the heat preservation cabinet (1), and the power supply unit (7) for supplying power to the electric control unit (6) and the water quality main board (20) is arranged inside the heat preservation cabinet (1).

9. The outdoor water quality on-line automatic monitoring system for surface water or pollution sources according to claim 1, characterized in that: articulated on heat preservation rack (1) have the revolving door, be equipped with industrial computer display screen (19) that link to each other with industrial control host computer (4) on the revolving door, still install rack air conditioner (2), monitoring unit (3) on heat preservation rack (1).

10. The outdoor water quality on-line automatic monitoring system for surface water or pollution sources according to claim 1, characterized in that: the bottom in the heat preservation cabinet (1) is also provided with a pure water barrel (13) and a waste liquid barrel (14).

Technical Field

The invention relates to a water quality monitoring system, in particular to an outdoor water quality on-line automatic monitoring system for surface water or pollution sources.

Background

The water quality monitoring is a process of measuring the types of pollutants in the water body, the concentrations and the variation trends of various pollutants and evaluating the water quality condition. The water quality monitoring range is wide, and the water quality monitoring range comprises natural water (rivers, lakes, seas and underground water) which is not polluted and is polluted, various industrial drainage water and the like.

The main monitoring projects can be divided into two main categories: one is a comprehensive index reflecting the water quality condition, such as items of temperature, chroma, conductivity, BOD, COD, ammonia nitrogen, total phosphorus, total nitrogen, turbidity, PH, dissolved oxygen and the like; the other is some toxic substances, such as phenol, cyanogen, arsenic, lead, chromium, cadmium, mercury, organic pesticides and the like. In order to objectively evaluate the water quality of rivers and oceans, it is sometimes necessary to measure the flow velocity and flow rate in addition to the above-described monitoring items.

The on-line automatic water quality monitor is an integrated on-line automatic monitoring equipment formed by using modern sensor technology, automatic measurement technology, automatic control circuit technology, computer application technology and network communication technology.

At present, the online automatic water quality monitor on the market has a complex structure, all parts are scattered, the integration level is poor, the operation of field operation and maintenance personnel is complex, the disassembly and the maintenance are inconvenient, and many parts cannot be used universally.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects in the prior art, the invention provides an outdoor water quality online automatic monitoring system for surface water or a pollution source, which can effectively overcome the defects of low integration level and no self-cleaning function in the prior art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

an outdoor water quality online automatic monitoring system for surface water or pollution sources comprises a heat preservation cabinet, wherein an industrial control host, an industrial control mainboard, a water quality mainboard and an electric control unit connected with the industrial control mainboard are fixedly installed inside the heat preservation cabinet, a reagent storage unit, a reagent box, an ultrasonic driver and a water quality sample retention unit are arranged inside the heat preservation cabinet, and an air compression unit is installed at the bottom inside the heat preservation cabinet;

and a water quality analysis unit, a multi-parameter measurement unit and a pipeline unit for selectively communicating the water quality analysis unit and the multi-parameter measurement unit are fixedly arranged in the heat preservation cabinet.

Preferably, the water quality analysis unit comprises a mounting plate, and an infrared metering assembly, a multi-way valve, a digestion assembly and a colorimetric assembly are fixedly mounted on the mounting plate;

the infrared metering assembly is connected with the multi-way valve, and the multi-way valve is connected with the digestion assembly through the high-pressure separation valve.

Preferably, the colorimetric component is provided with a colorimetric cover, the high-pressure separation valve is fixed on the mounting plate through a separation valve bracket, and the multi-way valve is provided with an indicator plate;

the infrared metering assembly comprises a peristaltic pump for pumping liquid, and the peristaltic pump is connected with the driver.

Preferably, the multi-parameter measuring unit comprises a multi-parameter water tank and a grit chamber, wherein the multi-parameter water tank is provided with a multi-parameter probe, a sampling valve and a water feeding elbow, and the grit chamber is provided with a stainless steel joint, an ultrasonic cleaning probe, a liquid level sensor, a high-precision filter and a water sample cup;

the multi-parameter water tank cleaning device is characterized in that a probe cleaning device is arranged on the multi-parameter probe, the probe cleaning device is connected with the air compression unit, and the ultrasonic cleaning probe is connected with the ultrasonic driver to clean the multi-parameter water tank, the high-precision filter and the water sample cup.

Preferably, the multiparameter water tank is provided with a multiparameter cover plate, the grit chamber is provided with a grit chamber cover plate, and the multiparameter cover plate and the grit chamber cover plate are both provided with cover plate handles.

Preferably, the pipeline unit comprises a pipeline mounting plate, a pipe fitting, an ultrasonic algae removal probe, a manual ball valve, a full-automatic valve, a sampling pump and a water sample connector, wherein the ultrasonic algae removal probe is connected with an ultrasonic driver;

and the pipeline mounting plate is fixedly provided with a multi-parameter water tank and a sand setting tank in the multi-parameter measuring unit.

Preferably, the sampling pump is connected between the sand depositing box and the water sample cup in the multi-parameter measuring unit, and the mounting plate is provided with a ventilation fan.

Preferably, the inside UPS power that is used for uninterrupted power supply that is equipped with of heat preservation rack, the inside power supply unit that is used for electric control unit, the power supply of quality of water mainboard power supply that is equipped with of heat preservation rack.

Preferably, the heat preservation cabinet is hinged with a revolving door, the revolving door is provided with an industrial personal computer display screen connected with the industrial personal computer host, and the heat preservation cabinet is further provided with a cabinet air conditioner and a monitoring unit.

Preferably, a pure water barrel and a waste liquid barrel are further mounted at the bottom in the heat preservation cabinet.

(III) advantageous effects

Compared with the prior art, the outdoor water quality online automatic monitoring system for surface water or pollution sources provided by the invention adopts a modularized and intelligent design, realizes centralized control of a measuring module, automatically controls detection and cleaning, adopts a water-gas mixed cleaning mode for a probe cleaning device, and has a better cleaning effect; the ultrasonic cleaning probe carries out ultrasonic cleaning on the multi-parameter water tank, the high-precision filter and the water sample cup, so that the cleaning is more thorough; the ultrasonic wave algae removal probe finishes the algae removal cleaning of the pipeline unit and can eliminate the influence of sediment floaters of a water sample on the water quality analysis unit.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic view of a heat-insulating cabinet according to the present invention;

FIG. 2 is a schematic view of the internal structure of the heat-insulating cabinet of the present invention;

FIG. 3 is a schematic view of the internal structure of the heat-insulating cabinet of the present invention;

FIG. 4 is a schematic view of the internal structure of the heat-insulating cabinet of the present invention;

FIG. 5 is a schematic diagram of the structure of the water quality analyzing unit shown in FIG. 3 according to the present invention;

FIG. 6 is a schematic view of the back side of the mounting plate of FIG. 5 according to the present invention;

FIG. 7 is a schematic diagram of the multi-parameter measurement unit of FIG. 3 according to the present invention;

FIG. 8 is a schematic top view of the structure of FIG. 7 according to the present invention;

FIG. 9 is a schematic top view of the structure of FIG. 7 according to the present invention;

FIG. 10 is a schematic diagram of the structure of the pipeline unit shown in FIG. 3 according to the present invention;

FIG. 11 is a schematic view of the back side of the pipeline mounting plate of FIG. 10 according to the present invention;

FIG. 12 is a flow chart of the control system operation of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An outdoor water quality online automatic monitoring system for surface water or pollution sources is disclosed, as shown in fig. 1 to 11, and comprises a heat preservation cabinet 1, wherein an industrial control host 4, an industrial control mainboard 5, a water quality mainboard 20 and an electric control unit 6 connected with the industrial control mainboard 5 are fixedly arranged inside the heat preservation cabinet 1, a reagent storage unit 9, a reagent box 11, an ultrasonic driver 10 and a water quality sample retention unit 12 are arranged inside the heat preservation cabinet 1, and an air compression unit 15 is arranged at the bottom inside the heat preservation cabinet 1;

a water quality analysis unit 16, a multi-parameter measurement unit 17 and a pipeline unit 18 for selectively communicating the water quality analysis unit 16 and the multi-parameter measurement unit 17 are fixedly installed in the heat preservation cabinet 1.

The UPS power supply 8 for uninterrupted power supply is arranged inside the heat preservation cabinet 1, and the power supply unit 7 for supplying power to the electric control unit 6 and the water quality main board 20 is arranged inside the heat preservation cabinet 1.

A revolving door is hinged on the heat preservation cabinet 1, an industrial personal computer display screen 19 connected with the industrial personal computer 4 is arranged on the revolving door, and a cabinet air conditioner 2 and a monitoring unit 3 are further arranged on the heat preservation cabinet 1.

The bottom in the heat preservation cabinet 1 is also provided with a pure water barrel 13 and a waste liquid barrel 14.

Operation and information query of relevant processes of the monitoring system are met through the industrial personal computer 4 and the display screen 19 of the industrial personal computer; the monitoring video recording of a monitoring site is met through the monitoring unit 3, and an outdoor monitoring system is monitored and protected.

The water quality analysis unit 16 comprises a mounting plate 1603, and an infrared metering assembly 1609, a multi-way valve 1611, a digestion assembly 1601 and a colorimetric assembly 1602 are fixedly mounted on the mounting plate 1603;

the infrared gauge assembly 1609 is connected to a multi-way valve 1611, and the multi-way valve 1611 is connected to the digestion assembly 1601 by a high pressure isolation valve 1612.

A colorimetric cover 1604 is arranged on the colorimetric assembly 1602, a high-pressure separating valve 1612 is fixed on the mounting plate 1603 through a separating valve bracket 1605, and an indicating plate 1606 is arranged on the multi-way valve 1611;

the infrared metering assembly 1609 includes a peristaltic pump 1607 for pumping the liquid, the peristaltic pump 1607 being connected to a driver 1610.

The multi-parameter measuring unit 17 comprises a multi-parameter water tank 1701 and a grit chamber 1708, wherein a multi-parameter probe 1706, a sampling valve 1702 and a water feeding elbow 1713 are arranged on the multi-parameter water tank 1701, and a stainless steel joint 1704, an ultrasonic cleaning probe 1705, a liquid level sensor 1709, a high-precision filter 1710 and a water sample cup 1714 are arranged on the grit chamber 1708;

the multi-parameter probe 1706 is provided with a probe cleaning device 1707, the probe cleaning device 1707 is connected with the air compression unit 15, and the ultrasonic cleaning probe 1705 is connected with the ultrasonic driver 10 to clean the multi-parameter water tank 1701, the high-precision filter 1710 and the water sample cup 1714.

The multi-parameter cover plate 1711 is arranged on the multi-parameter water tank 1701, the sand setting box cover plate 1712 is arranged on the sand setting box 1708, and the cover plate handles 1703 are arranged on the multi-parameter cover plate 1711 and the sand setting box cover plate 1712.

The probe cleaning device 1707 is cleaned by mixing water and gas, so that the cleaning effect is better; the ultrasonic cleaning probe 1705 carries out ultrasonic cleaning on the multi-parameter water tank 1701, the high-precision filter 1710 and the water sample cup 1714, so that cleaning is more thorough, and reliable guarantee is provided for long-term stable work of the measuring unit; the real-time monitoring of the water level height is realized through the integrated liquid level sensor 1709 in the water tank, and the feedback is provided for the multi-parameter measuring unit 17 and the ultrasonic cleaning.

The pipeline unit 18 comprises a pipeline mounting plate 1801, a pipe fitting 1803, an ultrasonic algae removal probe 1804, a manual ball valve 1805, a full-automatic valve 1806, a sampling pump 1807 and a water sample connector 1808, wherein the ultrasonic algae removal probe 1804 is connected with the ultrasonic driver 10;

the pipeline mounting plate 1801 is fixedly provided with a multi-parameter water tank 1701 and a sand setting tank 1708 in the multi-parameter measuring unit 17.

The sampling pump 1807 is connected between the sand setting box 1708 and the water sample cup 1714 in the multi-parameter measuring unit 17, and the mounting plate 1801 is provided with a ventilation fan 1802.

The automatic water sampling device has the advantages that the automatic valves 1806 are used for respectively opening the two water sampling pipelines to realize pipeline self-cleaning by using raw water, field water sampling of the pipeline unit 18 and testing of the multi-parameter measuring unit 17, and the ultrasonic algae removal probe 1804 is used for completing algae removal cleaning of the pipeline unit 18, so that algae breeding and attachment of dirt in the pipeline caused by long-term operation are prevented.

The pipeline unit 18 is designed with a pressure dividing pipeline, and the flow of the pipeline can be flexibly adjusted through the manual ball valve 1805, so that the monitoring system is suitable for sites with different parameters.

The industrial control mainboard 5 controls the on-site water pump and a full-automatic valve 1806 with two pipelines to be opened, the water pump is used for feeding water, the air compression unit 15 is used for pressing high-pressure gas into the water production pipe, and the pipeline is cleaned by water and gas mixing. After the water feeding is finished, the water collecting pump and the full-automatic valve 1806 are closed.

The full-automatic valve on the air compression unit 15 is opened, high-pressure gas is introduced into the probe cleaning device 1707 to complete the cleaning of the multi-parameter probe 1706, and then the full-automatic valve on the air compression unit 15 is closed. The full automatic valve on the multiparameter tank 1701 is opened and the tank is closed after it is emptied.

And starting a water production pump and a full-automatic valve 1806 thereof, filling the multi-parameter water tank 1701 and the sand setting tank 1708 with water, starting the full-automatic valve 1806 on the multi-parameter water tank 1701, and emptying the multi-parameter water tank 1701. The ultrasonic cleaning probe 1705 is turned on by the ultrasonic driver 10, and simultaneously the fully automatic valve on the air compression unit 15 is turned on, introducing high pressure gas into the high precision filter 1710. After the cleaning is finished, the full-automatic valve on the sand settling box 1708 is opened, and the sand settling box 1708 is emptied.

And (3) starting a water sampling pump and a full-automatic valve 1806 thereof, after the multi-parameter water tank 1701 and the grit chamber 1708 are rinsed by the field water sample for a period of time, closing the full-automatic valve on the water tank, and continuously feeding water for a period of time to provide a test water sample for the multi-parameter water tank 1701 so as to finish the measurement of multi-parameter data.

And starting the sampling pump 1807, continuously pumping the precipitated water sample in the sand setting tank 1708 into the water sample cup 1714, and taking water from the water sample cup 1714 by the water quality analysis unit 16 for detection.

And (5) closing the field water sampling pump and the sampling pump 1807, and judging whether a sample needs to be reserved or not after the detection is finished. And starting the water quality sample reserving unit 12 and the sampling pump 1807 when the sample reserving is needed until the sample reserving process is finished.

The full automatic valve on the multi-parameter water tank 1701 is opened, after the multi-parameter water tank 1701 is emptied, the ultrasonic cleaning probe 1705 is opened by the ultrasonic driver 10, and simultaneously the full automatic valve on the air compression unit 15 is opened to introduce high-pressure gas into the high-precision filter 1710. After cleaning, the full-automatic valves on the grit chamber 1708 and the water sample cup 1714 are opened, and the grit chamber 1708 and the water sample cup 1714 are emptied.

The field water collecting pump and the full-automatic valve thereof are started, the ultrasonic wave algae removal probe 1804 is started by the ultrasonic driver 10, the full-automatic valve on the air compression unit 15 is started, and the pipeline is cleaned and algae is removed.

And closing the full-automatic valve on the multi-parameter water tank 1701, closing the field water sampling pump after the response of the liquid level sensor 1709, and closing the full-automatic valves on the sand setting tank 1708 and the water sample cup 1714.

As shown in fig. 12, the control system in the solution of the present application is based on the cooperation of STM32 and Arm division. The STM32 is focused on the peripheral interface drive control of the on-line automatic monitoring system, and adopts a very powerful STM32F103VET6 configured in an STM32F103 series as an MCU to directly control the work of all peripheral equipment of the whole system.

Arm is used for flow control of the whole system, based on a control core of Arm + L inux + Qt, an NXPMCIMX6G2CVM05A type embedded processor in an ArmA7 series is adopted to work in 528MHz main frequency, a 256MBDDR3 running memory and a 1GBNANDF L ASH data storage space are configured, and the embedded processor is used for storing a bootstrap program, a L inux kernel program, a root file system, an application program, application data and configuration.

Through an RGB controller interface on the MCIMX6G2CVM05A, a L CD capacitive display touch screen with the resolution as high as 1280 x 800 is controlled, a visual operation platform is provided for the system, and a foundation is laid for good user experience.

In the technical scheme of the invention, through cooperative control of STM32 and Arm, the communication is transmitted through RS422, and RS232/RS485 communication, a USB interface, a USB _ wifi interface, a D/A output and a hundred-mega Ethernet port are externally provided. The RS232/RS485 is used for communicating with the output of the upper computer; the USB interface is used for connecting an external storage device (such as a USB flash disk) to perform system upgrading maintenance and the like; the USB _ wifi interface is used for connecting a wireless wifi module, a USB printer and the like to print or upload data, and the D/A output interface is used for converting a measurement result into 4-20 mA current to be output; the Ethernet port is used for connecting local area networks and the like for expansion and use.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.