CN105954321A - Low-cost dissolved oxygen sensor - Google Patents
Low-cost dissolved oxygen sensor Download PDFInfo
- Publication number
- CN105954321A CN105954321A CN201610273739.9A CN201610273739A CN105954321A CN 105954321 A CN105954321 A CN 105954321A CN 201610273739 A CN201610273739 A CN 201610273739A CN 105954321 A CN105954321 A CN 105954321A
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- Prior art keywords
- sensor
- dissolved oxygen
- module
- electrode core
- low cost
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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
Abstract
The present invention discloses a low-cost dissolved oxygen sensor, which comprises an outgoing cable, an outgoing cable protection sleeve, a sensor body, a sensor electrode core, a grinding stone, a push rod motor, a protective cover and a connecting piece. One end of the sensor body is connected with the outgoing cable. The other end of the sensor body is connected with the sensor electrode core. The sensor body further comprises a clock module, an input setting module and a data storage module. The work cycle of the push rod motor can be preset, and the service life of the sensor electrode core is prolonged. Meanwhile, the real-time storage function is realized by the data storage module. Therefore, the data loss caused by the failure of the sensor can be avoided. The surface of the sensor electrode core can be cleaned automatically, and the sensor is high in measurement accuracy. The measurement accuracy of the sensor is not influenced by the polluted water and the flow rate of the water. According to the embodiments of the invention, the sensor is simple in structure, reasonable in arrangement and low in manufacturing cost.
Description
Technical field
The present invention relates to a kind of dissolved oxygen sensor, particularly relate to a kind of low cost dissolved oxygen sensor, belong to water quality inspection
Survey field.
Background technology
Dissolved oxygen content in natural water body depends on water body and the balance of oxygen in air.The saturated content of oxygen in water
With relating to parameters such as atmospheric pressure and partial pressure of oxygen, water temperature and salinity.Unpolluted oxygen in water is saturation.
After water body is contaminated, the dissolved oxygen that will constantly consume in water due to the existence of aerobic bacteria, if can not get the timely benefit of air
Fill, then the dissolved oxygen of water will gradually decrease, and ultimately results in water body and goes bad.So using dissolved oxygen as the one of water pollution degree
Item index；Dissolved oxygen is the fewest, shows that pollution level is the most serious.When dissolved oxygen is less than 4mg/L, Fish are just difficult to survive, and are less than
During 2mg/L, water body just produces stink.
Dissolved oxygen detector is the instrument measuring content of oxygen dissolved in water, is functionally divided into off-line type and online two big
Class；The former is for laboratory conventional analysis or spot check test；The latter is used for engineering of water treatment or monitoring water environment, such as dirty
The detection of water biochemical treatment technical process, technique for treating industrial wastewater process, surface water, aquaculture monitoring etc..
Dividing from measuring method, dissolved oxygen measurement has iodimetric titration, chemical electrode method.And chemical electrode method be divided into galvanic cell method,
Polarography.Wherein, polarography application is relatively universal, is widely used in each field.Iodimetric titration measurement process is complicated, the cycle is long, is suitable for
Measurement in lab.Chemical electrode method is easily disturbed by various impurity in water, measurement accuracy is low, need periodic replacement electrolyte, makes
All inconvenient with safeguarding.
A kind of new dissolved oxygen sensing method fluorescence method occurs in recent years, relative to chemical electrode method, fluorescence measurement
Amount dissolved oxygen, is obtained for improvement at aspects such as stability, anti-interference, certainty of measurement, life-span, ease for maintenance；Should in reality
In with, owing to water quality condition difference is relatively big, dissolved oxygen probe all needs to increase self-stripping unit, all uses cleaning brush during general cleaning,
Which increasing drive mechanism, cleaning brush, to sensor friction, also reduces the life-span of sensor.
Summary of the invention
The technical problem to be solved is that the deficiency for background technology provides a kind of low cost dissolved oxygen biography
Sensor.
The present invention solves above-mentioned technical problem by the following technical solutions
A kind of low cost dissolved oxygen sensor, comprises outlet cable, outlet cable protection set, sensor main body, sensor electrode
Core, grinding stone, push-rod electric machine, protective cover, connection sheet, one end of described sensor main body is connected with outlet cable, described sensor
The other end of main body is connected with sensor electrode core, and described grinding stone is arranged on the periphery of sensor electrode core, and described grinding stone passes through
Push-rod electric machine connects sensor main body, and described grinding stone is connected with protective cover also by connecting sheet, and described protective cover is set in sensing
Outside device electrode cores, described outlet cable protection be set on outside outlet cable, described sensor main body comprise analog to digital conversion circuit,
Amplifying circuit, controller module, clock module, input setting module and data memory module；Analog-digital conversion circuit as described, amplification
Circuit, controller module are sequentially connected with, and described clock module, input setting module and data memory module are connected to control
On the corresponding port of device module.
As the further preferred scheme of the present invention a kind of low cost dissolved oxygen sensor, described outlet cable protection set is adopted
Constitute with anti-corrosion material.
As the further preferred scheme of the present invention a kind of low cost dissolved oxygen sensor, described protective cover is arc-shaped,
And use anticorrosive to make.
As the further preferred scheme of the present invention a kind of low cost dissolved oxygen sensor, described clock module chip-shaped
Number it is DS1307.
As the further preferred scheme of the present invention a kind of low cost dissolved oxygen sensor, described controller module uses
AVR series monolithic.
As the further preferred scheme of the present invention a kind of low cost dissolved oxygen sensor, described data memory module uses
EEPROM storage chip.
The present invention uses above technical scheme compared with prior art, has following technical effect that
1, sensor of the invention main body also comprises clock module, input setting module and data memory module, can set in advance
Determine the working cycle of push-rod electric machine, extend the service life of sensor electrode core, deposited in real time by data memory module simultaneously
Storage, it is to avoid the loss of data brought because of sensor fault；
2, present invention employs protection and overlap this application specific architecture protection outlet cable, it is ensured that installation is reliable, it is reliable to seal, and protection is electric
Cable is not broken by the teeth by water fish class or owing to current relatively suddenly pull apart cable；
3, sensor of the invention electrode cores surface can be cleaned automatically, and certainty of measurement is high, not by water pollution and water velocity shadow
Ringing certainty of measurement, this detailed description of the invention has simple in construction, arranges the advantages such as reasonable, cost of manufacture is low；
4, the grinding stone of the present invention is connected with protective cover by connecting sheet, drives protective cover to move up and down, protects sensor electrode core
Do not affected by oxygen bubbles, relax static current and quick current, make measurement not affected by water velocity, improve measurement
Degree of accuracy.
Accompanying drawing explanation
Fig. 1 is present configuration figure；
Fig. 2 is the structured flowchart of inventive sensor main body.
In figure, label is specific as follows: 1-outlet cable, 2-sensor main body, 3-sensor electrode core, 4-anode, and 5-is cloudy
Pole, 6-oxygen permeation membrane, 7-grinding stone, 8-push-rod electric machine, 9-protective cover, 10-connects sheet, 11-outlet cable protection set.
Detailed description of the invention
Below in conjunction with the accompanying drawings technical scheme is described in further detail:
As it is shown in figure 1, a kind of low cost dissolved oxygen sensor, comprise outlet cable 1, outlet cable protection set 11, sensor main
Body 2, sensor electrode core 3, grinding stone 7, push-rod electric machine 8, protective cover 9, connect sheet 10, one end of described sensor main body 2 with go out
Line cable 1 connects, and the other end of described sensor main body 2 is connected with sensor electrode core 3, and described grinding stone 7 is arranged on sensor
The periphery of electrode cores 3, described grinding stone 7 connects sensor main body 2 by push-rod electric machine 8, described grinding stone 7 also by connect sheet 10 with
Protective cover 9 connects, and described protective cover 9 is set in outside sensor electrode core, and described outlet cable protection set 11 is arranged on outlet electricity
Outside cable 1, described sensor electrode core comprises anode 4 and negative electrode 5.Described outlet cable protection set uses anti-corrosion material to constitute.Institute
State and outside protective cover 9, be provided with oxygen permeation membrane 6.Described protective cover 9 is arc-shaped, and uses anticorrosive to make.
Present invention employs protection and overlap this application specific architecture protection outlet cable, it is ensured that installation is reliable, it is reliable to seal, protection
Cable is not broken by the teeth by water fish class or owing to current relatively suddenly pull apart cable；Sensor of the invention electrode cores surface can be the most clear
Washing, certainty of measurement is high, is not affected certainty of measurement by water pollution and water velocity, this detailed description of the invention have simple in construction,
The advantages such as reasonable, cost of manufacture is low are set；The grinding stone of the present invention is connected with protective cover by connecting sheet, drives and moves down on protective cover
Dynamic, protection sensor electrode core is not affected by oxygen bubbles, relaxes static current and quick current, makes measurement not by water flow velocity
The impact of degree, improves measuring accuracy.
As in figure 2 it is shown, described sensor main body comprises analog to digital conversion circuit, amplifying circuit, controller module, clock mould
Block, input setting module and data memory module；Analog-digital conversion circuit as described, amplifying circuit, controller module are sequentially connected with, institute
State clock module, input setting module and data memory module to be connected on the corresponding port of controller module.Time described
The chip model of clock module is DS1307.Described controller module uses AVR series monolithic.Described data memory module uses
EEPROM storage chip.It is permissible that sensor of the invention main body comprises clock module, input setting module and data memory module
Preset the working cycle of push-rod electric machine, extend the service life of sensor electrode core, pass through data memory module simultaneously
Real-time storage, it is to avoid the loss of data brought because of sensor fault.
It is provided with motor between push-rod electric machine and controller module to drive, when needs cleaning sensor electrode cores, controller mould
Block sends a signal to motor and drives, and then drives push-rod electric machine, and grinding stone 7 passes through push-rod electric machine 8 in the periphery of sensor electrode core 3
Moving up and down, grinding stone 7 ceaselessly grinds anode 4, the surface of negative electrode 5, improves certainty of measurement, and meanwhile, grinding stone 7 is by connecting
Sheet 10 is connected with protective cover 9, drives protective cover 9 to move up and down, and protection sensor electrode core 3 is not affected by oxygen bubbles, relaxes
Static current and quick current, make measurement not affected by water velocity, improve measuring accuracy.Sensor of the invention
Electrode cores surface can be cleaned automatically, and certainty of measurement is high, is not affected certainty of measurement by water pollution and water velocity, is originally embodied as
Mode has simple in construction, arranges the advantages such as reasonable, cost of manufacture is low.
In sum, sensor of the invention main body also comprises clock module, input setting module and data memory module,
The working cycle of push-rod electric machine can be preset, extend the service life of sensor electrode core, stored by data simultaneously
Module real-time storage, it is to avoid the loss of data brought because of sensor fault；Present invention employs protection and overlap this application specific architecture guarantor
Protecting outlet cable, it is ensured that installation is reliable, it is reliable to seal, protection cable is not broken by the teeth by water fish class or owing to current are relatively suddenly pulled apart
Cable；Sensor of the invention electrode cores surface can be cleaned automatically, and certainty of measurement is high, is not affected by water pollution and water velocity
Certainty of measurement, this detailed description of the invention has simple in construction, arranges the advantages such as reasonable, cost of manufacture is low；The grinding stone of the present invention leads to
Crossing connection sheet to be connected with protective cover, drive protective cover to move up and down, protection sensor electrode core is not affected by oxygen bubbles, relaxes
Static current and quick current, make measurement not affected by water velocity, improve measuring accuracy.
It is understood that unless otherwise defined, all terms used herein (include technology art to those skilled in the art of the present technique
Language and scientific terminology) have with the those of ordinary skill in art of the present invention be commonly understood by identical meaning.Also should
Being understood by, those terms defined in such as general dictionary should be understood that the meaning having with the context of prior art
The meaning that justice is consistent, and unless defined as here, will not explain by idealization or the most formal implication.
Above example is only the technological thought that the present invention is described, it is impossible to limit protection scope of the present invention with this, every
The technological thought proposed according to the present invention, any change done on the basis of technical scheme, each fall within scope
Within.Above embodiments of the present invention are explained in detail, but the present invention is not limited to above-mentioned embodiment, in ability
In the ken that territory those of ordinary skill is possessed, it is also possible to make various change on the premise of or else departing from present inventive concept
Change.
Claims (6)
1. a low cost dissolved oxygen sensor, it is characterised in that: comprise outlet cable, outlet cable protection set, sensor main
Body, sensor electrode core, grinding stone, push-rod electric machine, protective cover, connection sheet, one end of described sensor main body is with outlet cable even
Connecing, the other end of described sensor main body is connected with sensor electrode core, and described grinding stone is arranged on the periphery of sensor electrode core,
Described grinding stone connects sensor main body by push-rod electric machine, and described grinding stone is connected with protective cover also by connecting sheet, described protection
The enclosure is located at outside sensor electrode core, and the protection of described outlet cable is set on outside outlet cable, and described sensor main body comprises
Analog to digital conversion circuit, amplifying circuit, controller module, clock module, input setting module and data memory module；Described modulus
Change-over circuit, amplifying circuit, controller module are sequentially connected with, described clock module, input setting module and data memory module
It is connected on the corresponding port of controller module.
A kind of low cost dissolved oxygen sensor the most according to claim 1, it is characterised in that: described outlet cable protection set
Employing anti-corrosion material is constituted.
A kind of low cost dissolved oxygen sensor the most according to claim 1, it is characterised in that: described protective cover is circular arc
Shape, and use anticorrosive to make.
A kind of low cost dissolved oxygen sensor the most according to claim 1, it is characterised in that: the chip of described clock module
Model is DS1307.
A kind of low cost dissolved oxygen sensor the most according to claim 1, it is characterised in that: described controller module uses
AVR series monolithic.
A kind of low cost dissolved oxygen sensor the most according to claim 1, it is characterised in that: described data memory module is adopted
Use EEPROM storage chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610273739.9A CN105954321A (en) | 2016-04-28 | 2016-04-28 | Low-cost dissolved oxygen sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610273739.9A CN105954321A (en) | 2016-04-28 | 2016-04-28 | Low-cost dissolved oxygen sensor |
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| CN105954321A true CN105954321A (en) | 2016-09-21 |
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| CN201610273739.9A Pending CN105954321A (en) | 2016-04-28 | 2016-04-28 | Low-cost dissolved oxygen sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656466A (en) * | 2017-07-31 | 2018-02-02 | 无锡昊瑜节能环保设备有限公司 | A kind of inexpensive sensing device for being used to measure water oxygen content |
| CN107655939A (en) * | 2017-07-31 | 2018-02-02 | 无锡昊瑜节能环保设备有限公司 | A kind of inexpensive dissolved oxygen sensing detection device |
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| CN2501051Y (en) * | 2001-11-15 | 2002-07-17 | 何燕文 | Gas detector |
| CN201173905Y (en) * | 2008-04-08 | 2008-12-31 | 杭州电子科技大学 | Chlorine gas concentration on-line monitoring device |
| CN201844891U (en) * | 2010-11-23 | 2011-05-25 | 中国地质调查局水文地质环境地质调查中心 | Monitor for liquid level and temperature |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656466A (en) * | 2017-07-31 | 2018-02-02 | 无锡昊瑜节能环保设备有限公司 | A kind of inexpensive sensing device for being used to measure water oxygen content |
| CN107655939A (en) * | 2017-07-31 | 2018-02-02 | 无锡昊瑜节能环保设备有限公司 | A kind of inexpensive dissolved oxygen sensing detection device |
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Application publication date: 20160921 |