CN107894452B - A kind of online ion concentration sensor maintained automatically - Google Patents
A kind of online ion concentration sensor maintained automatically Download PDFInfo
- Publication number
- CN107894452B CN107894452B CN201711056271.9A CN201711056271A CN107894452B CN 107894452 B CN107894452 B CN 107894452B CN 201711056271 A CN201711056271 A CN 201711056271A CN 107894452 B CN107894452 B CN 107894452B
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- intake pump
- pump
- measuring flume
- ion concentration
- buffer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/36—Glass electrodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
Abstract
The invention discloses the online ion concentration sensors that one kind is maintained automatically, including measure-controlling unit, measuring flume, ion concentration probe, air intake pump, exhaust pump, measurement solution intake pump, cleaning solution intake pump, protection liquid intake pump and buffer intake pump.Measuring flume is a hollow container; the top of measuring flume is provided with 7 holes; respectively ion concentration probe mounting holes, air inlet, gas vent, measurement solution inlet opening, cleaning solution inlet opening, protection liquid inlet opening and buffer inlet opening, lowermost end are provided with 1 drainage stomata.Measure-controlling unit connects ion concentration probe, air intake pump, exhaust pump, measurement solution intake pump, cleaning solution intake pump, protection liquid intake pump and buffer intake pump, controls them and works.The present invention has the characteristics that high degree of automation, human cost are low, it is non-maintaining to maintain automatically, suitable for application scenarios such as the online environmental index detection of unmanned website, intelligent industrial production, wisdom agricultural and industrialization ecologic breedings.
Description
Technical field
The invention belongs to the sensor technical field in information technology field, in particular to it is a kind of maintain automatically it is online
Formula ion concentration sensor.
Background technique
With the development of technology of Internet of things, all kinds of online sensors be applied to industrial production, environmental monitoring, agricultural support
The various industries such as grow.Wherein, online ion concentration sensor is due to can be monitored in real time the substance of all kinds of ions in solution
Concentration is measured, is of great significance for the measurement and control of the indexs such as total nitrogen, total phosphorus, pH value, dissolved oxygen in soil, water body.
But the ion concentration probe of existing online ion concentration sensor is all made of sensitive film transducer on the market
Structure, in actual use, it is necessary to be cleaned, and must maintained molten in saturation potassium chloride commonly using cleaning solutions such as ultrapure waters
Liquid etc. protects liquid to prolong the service life；After used a period of time, buffer need to be used to calibrate probe.The above spy
Property, so that ion concentration sensor needs to put into a large amount of manpower maintenance cost in use, it can not really realize unmanned value
The online automatic measurement kept.
How existing ion concentration sensor is improved, to realize automatic maintenance, calibration, to reduce manpower dimension
Cost is protected, is the project with higher research and application value.
Summary of the invention
In order to solve the technical issues of above-mentioned background technique proposes, the present invention is intended to provide it is a kind of maintain automatically it is online
Ion concentration sensor overcomes the online ion concentration sensor of tradition that frequent progress is needed manually to maintain, calibrate, can not be real
The drawbacks of realizing unattended all automatic measurement.
In order to achieve the above technical purposes, the technical solution of the present invention is as follows:
A kind of online ion concentration sensor maintained automatically, including measure-controlling unit, measuring flume, ion concentration are visited
Head, air intake pump, exhaust pump, measurement solution intake pump, cleaning solution intake pump, protection liquid intake pump and buffer intake pump；It is described
Measuring flume is a hollow container, and the top of measuring flume is provided with 7 holes, respectively ion concentration probe mounting holes, air inlet, exhaust
Hole, measurement solution inlet opening, cleaning solution inlet opening, protection liquid inlet opening and buffer inlet opening, the lowermost end of measuring flume are provided with 1
A drainage stomata, the hole are connect with outside by check valve, and outside air and liquid incapability are entered in measuring flume by the hole
Portion；The ion concentration probe is inserted into measuring flume by ion concentration probe mounting holes, and is not contacted with measuring flume inner wall；Institute
It states air intake pump to connect by air inlet with measuring flume, outside air can be pumped into inside measuring flume by air intake pump, inside measuring flume
Gas cannot escape into outside by air intake pump；The exhaust pump is connect by gas vent with measuring flume, and exhaust pump can will measure
Slot internal gas is pumped out to outside, and outside air cannot be entered inside measuring flume by exhaust pump；The measurement solution intake pump
It is connect by measurement solution inlet opening with measuring flume, externally measured solution can be pumped into measuring flume by measurement solution intake pump
Portion, measuring flume internal liquid cannot flow out to outside by measuring solution intake pump；The cleaning solution intake pump passes through cleaning solution
Inlet opening is connect with measuring flume, and cleaning solution intake pump can enter exterior washings liquid pump inside measuring flume, measuring flume internal liquid
Outside cannot be flowed out to by cleaning solution intake pump；The protection liquid intake pump is connect by protection liquid inlet opening with measuring flume,
Protection liquid intake pump can enter outer protection liquid pump inside measuring flume, and measuring flume internal liquid cannot be by protecting liquid intake pump
Flow out to outside；The buffer intake pump is connect by buffer inlet opening with measuring flume, and buffer intake pump can will be outer
Portion's buffer is pumped into inside measuring flume, and measuring flume internal liquid cannot flow out to outside by buffer intake pump；The measurement
Control unit by control line be separately connected ion concentration probe, air intake pump, exhaust pump, measurement solution intake pump, cleaning solution into
Water pump, protection liquid intake pump and buffer intake pump work to control them.
Preferred embodiment based on the above-mentioned technical proposal, the ion concentration probe is made of Low ESR sensitivity membrane material
Measuring electrode, and included analog-digital converter.
Preferred embodiment based on the above-mentioned technical proposal, the air intake pump and exhaust pump are the miniature air with check valve
Motor.
Preferred embodiment based on the above-mentioned technical proposal, the measurement solution intake pump, cleaning solution intake pump, protection liquid water inlet
Pump and buffer intake pump are the peristaltic pump driven by micromotor with check valve.
Preferred embodiment based on the above-mentioned technical proposal, the ion concentration probe, air intake pump, exhaust pump, measurement solution into
Water pump, protects liquid intake pump and buffer intake pump and corresponding ion concentration probe mounting holes, air inlet at cleaning solution intake pump
It adopts in gap between hole, gas vent, measurement solution inlet opening, cleaning solution inlet opening, protection liquid inlet opening and buffer inlet opening
It is sealed with waterproof material.
Preferred embodiment based on the above-mentioned technical proposal, between air intake pump and outside air, between exhaust pump and outside air
It is equipped with air filter.
Preferred embodiment based on the above-mentioned technical proposal, measure between solution intake pump and externally measured solution, cleaning solution into
Between water pump and exterior washings liquid, between protection liquid intake pump and outer protection liquid, buffer intake pump and external buffer liquid it
Between be equipped with sedimeter.
Preferred embodiment based on the above-mentioned technical proposal, the measuring flume are poured by resistant material, measuring flume it is upper
Half portion is divided into cylindrical body, and lower half portion is reverse taper, is uprightly placed on horizontal plane by bracket.
By adopting the above technical scheme bring the utility model has the advantages that
The present invention by measuring flume and all kinds of micro pumps realize measurement solution, cleaning solution, protection liquid, buffer from
It is dynamic to be pumped into and be discharged, online ion concentration measurement can be completed in the case where without human intervention, sensor probe cleaning, passed
The work such as sensor probe calibration reduce the maintenance cost of ion concentration sensor, realize unattended online full-automatic
Measurement.In the application scenarios such as environmental index detection, intelligent industrial production, wisdom agricultural and industrialization ecologic breeding, with
Past ion concentration sensor is compared, and has apparent advantage on working efficiency.
Detailed description of the invention
Fig. 1 is the system composition block diagram of the invention.
Specific embodiment
Below with reference to attached drawing, technical solution of the present invention is described in detail.
A kind of online ion concentration sensor maintained automatically, as shown in Figure 1, including measure-controlling unit, measuring flume,
Ion concentration probe, air intake pump, exhaust pump measure solution intake pump, and cleaning solution intake pump protects liquid intake pump and buffer
Intake pump.
Measure-controlling unit is that a SCM system is adopted using Godson 1C microprocessor chip as central processing unit
It uses 802.11a/b/g protocol remote wireless module as communication module, carries 12V lithium polymer battery as power supply.It surveys
It measures control unit and ion concentration probe and relay module is connected by RS485 bus, using MODBUS agreement to relay mould
Block is controlled.Relay module is separately connected air intake pump, exhaust pump, measurement solution intake pump, cleaning solution intake pump, protection liquid
Intake pump, buffer intake pump.
Measuring flume is by the vertical hollow container of polyethylene terephthalate (PET) material moulding by casting, the upper half
It is divided into cylindrical body, lower half portion is reverse taper, is uprightly placed on horizontal plane using stainless steel stent.Measuring flume top is provided with 7
A band internal screw thread circular hole, respectively ion concentration probe mounting holes, air inlet, gas vent, measurement solution inlet opening, cleaning solution into
Water hole, protection liquid inlet opening, buffer inlet opening.Wherein ion concentration probe mounting holes internal diameter is DN15 (half English
It is very little), remaining each hole internal diameter is 2 millimeters.Measuring flume lowermost end is provided with 1 threaded circular hole, is drainage stomata, internal diameter DN15
(one-half inch) is connect with outside by DN15 check (non-return) valve, and outside air and liquid can not be entered in container by the hole
Portion.
Ion concentration probe be polytetrafluoroethylene diaphragm glass electrode, carry analog-digital converter, outer diameter be DN15 (two/
One inch), it is inserted among measuring flume by ion concentration probe mounting holes, and not contact measurement slot inner wall.Ion concentration probe
Gap between mounting hole is sealed using neutral silicone adhesive.
Air intake pump is the miniature air motor with 2 millimeters of check (non-return) valves.Air intake pump is logical using 2 millimeters of internal diameter of silica gel hose
It crosses air inlet to connect with measuring flume, gap therebetween is sealed using neutral silicone adhesive.Outside air can be pumped into survey by air intake pump
Inside measuring tank, measuring flume internal gas can not escape into outside by air pump.Poly- third is equipped between air pump and outside air
Alkene (PP) High Efficiency Filter Media.
Exhaust pump is the miniature air motor with 2 millimeters of check (non-return) valves.Exhaust pump is logical using 2 millimeters of internal diameter of silica gel hose
It crosses gas vent to connect with measuring flume, gap therebetween is sealed using neutral silicone adhesive.Exhaust pump can be by measuring flume inner air
It is pumped out to outside, extraneous gas can not be entered inside measuring flume by exhaust pump.Poly- third is equipped between exhaust pump and outside air
Alkene (PP) High Efficiency Filter Media.
Measurement solution intake pump is the peristaltic pump driven by 12V micromotor with 2 millimeters of check (non-return) valves.Measure solution into
Water pump is connect by measuring solution inlet opening with measuring flume using 2 millimeters of internal diameter of silica gel hose, and gap therebetween uses neutral
Silicone adhesive sealing.Externally measured solution can be pumped into inside measuring flume by measurement solution intake pump, and measuring flume internal liquid can not
Outside is flowed out to by measuring solution intake pump.It measures and is filtered between solution intake pump and externally measured solution equipped with stainless steel
Net.
Cleaning solution intake pump is the peristaltic pump driven by 12V micromotor with 2 millimeters of check (non-return) valves.Cleaning solution intake pump
It is connect by cleaning solution inlet opening with measuring flume using 2 millimeters of internal diameter of silica gel hoses, gap therebetween uses neutral silicone adhesive
Sealing.Cleaning solution intake pump can enter exterior washings liquid pump inside measuring flume, and measuring flume internal liquid can not pass through cleaning solution
Intake pump flows out to outside.Stainless steel filter screen is housed between cleaning solution intake pump and externally measured solution.
Protection liquid intake pump is the peristaltic pump driven by 12V micromotor with 2 millimeters of check (non-return) valves.Protect liquid intake pump
It is connect by protection liquid inlet opening with measuring flume using 2 millimeters of internal diameter of silica gel hoses, gap therebetween uses neutral silicone adhesive
Sealing.Protection liquid intake pump can enter outer protection liquid pump inside measuring flume, and measuring flume internal liquid can not be by protecting liquid
Intake pump flows out to outside.It protects and stainless steel filter screen is housed between liquid intake pump and outer protection liquid.
Buffer intake pump is the peristaltic pump driven by 12V micromotor with 2 millimeters of check (non-return) valves.Buffer intake pump
It is connect by buffer inlet opening with measuring flume using 2 millimeters of internal diameter of silica gel hoses, gap therebetween uses neutral silicone adhesive
Sealing.Measurement solution intake pump can enter external buffer liquid pump inside measuring flume, and measuring flume internal liquid can not pass through buffering
Liquid intake pump flows out to outside.Stainless steel filter screen is housed between buffer intake pump and external buffer liquid.
When needing to measure solution ion concentration, protection liquid is discharged in sensor, and is pumped into measurement solution.Firstly,
Measure-controlling unit controls relay module and starts air intake pump, makes to form positive pressure in measuring flume, protects liquid via drainage stomata
It flows out to outside measuring flume, subsequent relay module resets.Then, measure-controlling unit control relay module starts exhaust pump
With measurement solution intake pump, making to form negative pressure in measuring flume, measurement solution flows into measuring flume via measurement solution intake pump, and
Do not had ion concentration probe height at least, subsequent relay module resets.Measure-controlling unit reads ion by RS485 bus
The numerical value of concentration probe analog-digital converter output, can be obtained the ion concentration data of measurement solution after being computed.
When the measurement is completed, ion concentration probe and measuring flume inner wall are cleaned, measure-controlling unit controls first
Relay module starts air intake pump, makes to form positive pressure in measuring flume, measurement solution flows out to outside measuring flume via drainage stomata
Portion, subsequent relay module reset.Then, measure-controlling unit control relay module starting exhaust pump and cleaning solution water inlet
Pump makes to form negative pressure in measuring flume, and cleaning solution flows into measuring flume via cleaning solution intake pump, and does not have ion concentration spy at least
Grease head highness, subsequent relay module reset.Finally, measure-controlling unit control relay module starts air intake pump, make measuring flume
Interior formation positive pressure, cleaning solution flow out to outside measuring flume via drainage stomata, and air intake pump is held after whole cleaning solutions are discharged
Continuous work is for a period of time to use air-flow drying ion concentration probe and measuring flume inner wall, subsequent relay module to reset.Herein
Use ultrapure water as cleaning solution, the above process can be repeated several times to ensure that ion concentration probe and measuring flume inner wall washing are dry
Only.
It after the completion of cleaning, pops one's head in ion concentration and carries out buffer protection, measure-controlling unit first controls relay mould
Block starts exhaust pump and protection liquid intake pump, makes to form negative pressure in measuring flume, protection liquid flows into measurement via protection liquid intake pump
In slot, and do not had ion concentration probe height at least, subsequent relay module resets.It is used herein as saturated potassium chloride solution conduct
Protect liquid.After the completion of buffer protection process, ion concentration probe measurement precision and service life can be maintained to exist before measure next time
It is horizontal at present, it will not significantly reduce.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within.
Claims (7)
1. the online ion concentration sensor that maintains automatically of one kind, it is characterised in that: including measure-controlling unit, measuring flume,
Ion concentration probe, air intake pump, exhaust pump, measurement solution intake pump, cleaning solution intake pump, protection liquid intake pump and buffer into
Water pump；The measuring flume is a hollow container, and the top of measuring flume is provided with 7 holes, respectively ion concentration probe mounting holes, into
Stomata, gas vent, measurement solution inlet opening, cleaning solution inlet opening, protection liquid inlet opening and buffer inlet opening, measuring flume is most
Bottom end is provided with 1 drainage stomata, which is connect with outside by check valve, and outside air cannot be entered with liquid by the hole
Inside measuring flume；The ion concentration probe is inserted into measuring flume by ion concentration probe mounting holes, and not and in measuring flume
Wall contact；The air intake pump is connect by air inlet with measuring flume, and outside air can be pumped into inside measuring flume by air intake pump, is surveyed
Measuring tank internal gas cannot escape into outside by air intake pump；The exhaust pump is connect by gas vent with measuring flume, exhaust pump
Measuring flume internal gas can be pumped out to outside, outside air cannot be entered inside measuring flume by exhaust pump；The measurement is molten
Liquid intake pump is connect by measuring solution inlet opening with measuring flume, and externally measured solution can be pumped into survey by measurement solution intake pump
Inside measuring tank, measuring flume internal liquid cannot flow out to outside by measuring solution intake pump；The cleaning solution intake pump passes through
Cleaning solution inlet opening is connect with measuring flume, and cleaning solution intake pump can enter exterior washings liquid pump inside measuring flume, in measuring flume
Portion's liquid cannot flow out to outside by cleaning solution intake pump；The protection liquid intake pump passes through protection liquid inlet opening and measuring flume
Connection, protection liquid intake pump can enter outer protection liquid pump inside measuring flume, and measuring flume internal liquid cannot be by protecting liquid
Intake pump flows out to outside；The buffer intake pump is connect by buffer inlet opening with measuring flume, buffer intake pump energy
Enough to enter external buffer liquid pump inside measuring flume, measuring flume internal liquid cannot flow out to outside by buffer intake pump；Institute
It states measure-controlling unit and ion concentration probe, air intake pump, exhaust pump, measurement solution intake pump, clear is separately connected by control line
Washing lotion intake pump, protection liquid intake pump and buffer intake pump work to control them；The ion concentration probe, air inlet
Pump, measurement solution intake pump, cleaning solution intake pump, protects liquid intake pump and buffer intake pump and corresponding ion at exhaust pump
Concentration probe mounting hole, air inlet, gas vent, measurement solution inlet opening, cleaning solution inlet opening, protection liquid inlet opening and buffer
Gap between inlet opening is sealed using waterproof material.
2. the online ion concentration sensor maintained automatically according to claim 1, it is characterised in that: the ion concentration
Probe is the measuring electrode made of Low ESR sensitivity membrane material, and included analog-digital converter.
3. the online ion concentration sensor maintained automatically according to claim 1, it is characterised in that: the air intake pump and
Exhaust pump is the miniature air motor with check valve.
4. the online ion concentration sensor maintained automatically according to claim 1, it is characterised in that: the measurement solution
Intake pump, cleaning solution intake pump, protection liquid intake pump and buffer intake pump are being driven by micromotor with check valve
Peristaltic pump.
5. the online ion concentration sensor maintained automatically according to claim 1, it is characterised in that: air intake pump and outside
Air filter is equipped between air, between exhaust pump and outside air.
6. the online ion concentration sensor maintained automatically according to claim 1, it is characterised in that: measurement solution water inlet
Between pump and externally measured solution, between cleaning solution intake pump and exterior washings liquid, protection liquid intake pump and outer protection liquid it
Between, between buffer intake pump and external buffer liquid be equipped with sedimeter.
7. the online ion concentration sensor maintained automatically according to claim 1, it is characterised in that: the measuring flume by
Resistant material is poured, and the top half of measuring flume is cylindrical body, and lower half portion is reverse taper, is uprightly placed by bracket
In on horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711056271.9A CN107894452B (en) | 2017-11-01 | 2017-11-01 | A kind of online ion concentration sensor maintained automatically |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711056271.9A CN107894452B (en) | 2017-11-01 | 2017-11-01 | A kind of online ion concentration sensor maintained automatically |
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| Publication Number | Publication Date |
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| CN107894452A CN107894452A (en) | 2018-04-10 |
| CN107894452B true CN107894452B (en) | 2019-05-21 |
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| CN201711056271.9A Active CN107894452B (en) | 2017-11-01 | 2017-11-01 | A kind of online ion concentration sensor maintained automatically |
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| CN112198293B (en) * | 2020-10-09 | 2021-04-30 | 中国环境科学研究院 | Ammonia nitrogen release research device for black and odorous water body |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2729942B2 (en) * | 1993-02-25 | 1998-03-18 | 株式会社堀場製作所 | Automatic electrolyte analyzer sampling method |
| JP4014897B2 (en) * | 2002-03-08 | 2007-11-28 | 株式会社堀場製作所 | Automatic ion concentration measuring device |
| CN100420942C (en) * | 2005-12-17 | 2008-09-24 | 承慰才 | On-line full automatic sodium ion concentration analyzer |
| CN104007239B (en) * | 2014-06-12 | 2016-01-27 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of high concentration ion automatic on-line detecting system and method |
| CN104764891A (en) * | 2015-03-30 | 2015-07-08 | 江苏一脉科技有限公司 | Online analyzer for excess of caustic soda |
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