CN102507886B - Online water quality monitoring method and instrument - Google Patents
Online water quality monitoring method and instrument Download PDFInfo
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- CN102507886B CN102507886B CN201110300834.0A CN201110300834A CN102507886B CN 102507886 B CN102507886 B CN 102507886B CN 201110300834 A CN201110300834 A CN 201110300834A CN 102507886 B CN102507886 B CN 102507886B
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Abstract
The embodiment of the invention discloses an online water quality monitoring method and instrument. The method comprises the following steps of: obtaining adjusting parameters; determining the depth of a suction tube inserted into a container according to the adjusting parameters, wherein the depth refers to the distance from the surface of a water body to be detected in the container to the port of the suction tube; extracting the water body to be detected, which is indicated by the depth, through the suction tube; and detecting the extracted water body to be detected. By utilizing the online water quality monitoring method and instrument disclosed by the embodiment of the invention, the water level of the container is descended when the water body in the container is extracted by the suction tube; when the water level is descended to the port of the suction tube, the suction tube cannot extract the liquid in the container, i.e., the aim of quantitatively sampling through utilizing a simple step of adjusting the depth of the suction tube in the container can be achieved, so that the quantitative sampling is more accurate. Furthermore, the water quality detection is more accurate.
Description
Technical field
The present invention relates to liquid detecting field, in particular, relate to on-line water quality monitoring method and on-line computing model.
Background technology
Along with industrial automation develop the raising with people's living standard, a large amount of industrial waste waters and liquid sewage enter the water bodys such as river, lake and ocean, and therefore in liquid, the detection of pollutant component is imperative.
Liquid detecting technology comprises sampling procedure, existing liquid detecting sampling technique is the method controlling liquid level in container, by liquid sampling in a container, the height of liquid level is controlled by sensor, reach the object of quantitative sampling, when liquid soon reaches regulation liquid level, the flow of influent be reduced, progressively to reach regulation liquid level.In this process, need high-precision sensor, if flow is a little large a little, just may exceedes regulation liquid level, cause the inaccurate of quantitative sampling.If sample inaccurate, what can cause described sampling liquid detecting result further is inaccurate.
To sum up, the quantitative sampling method of existing liquid, because need strict accurate control just can reach the accuracy of quantitative sampling, so the step of quantitative sampling is comparatively complicated; Further, this inaccurate quantitative sampling method causes the follow-up testing result accuracy to liquid lower.
Summary of the invention
In view of this, the invention provides a kind of on-line water quality monitoring method and on-line computing model, to overcome in prior art the accuracy needing strict accurate control just can reach quantitative sampling, the problem of the quantitative sampling complicacy caused, and solve further and quantitatively inaccurately cause the follow-up problem lower to water body testing result accuracy.
For achieving the above object, the invention provides following technical scheme:
A kind of water body quantitative sampling method, comprise acquisition regulating parameter, also comprise step: the degree of depth inserted in a reservoir according to described regulating parameter determination suction tube, the described degree of depth refers to that in described container, water surface to be measured is to the distance of described suction tube port; The water body to be measured of described degree of depth instruction is extracted by described suction tube.
Preferably, the wall of described container is provided with wall leakage fluid dram, extracted the water body to be measured of described degree of depth instruction then by described suction tube before, also comprise step: water body to be measured is drawn into described container to sampling pump from water body source to be measured until described water body to be measured is after described wall leakage fluid dram outflow, stops extracting; Accordingly, the concrete steps adjusting the described suction tube degree of depth are in the above-described container: adjust the distance of described suction tube port apart from described wall leakage fluid dram.
Preferably, the diverse location place of water body to be measured described in same in described water body source to be measured is sampled respectively.
Preferably, the executive agent of described water body quantitative sampling is peristaltic pump.
Preferably, described acquisition regulating parameter step is specially: obtain the cross-sectional area of described container and the sample volume of described water body to be measured.
Wherein, obtain regulating parameter, comprise step: the degree of depth inserted in a reservoir according to regulating parameter determination suction tube, the described degree of depth refers to that in described container, water surface to be measured is to the distance of described suction tube port; The water body to be measured of described degree of depth instruction is extracted by described suction tube; The described water body to be measured extracted is detected.
A kind of water body quantitative sampling device, comprising: get parms unit, for obtaining regulating parameter; Determine degree of depth unit, for the degree of depth inserted in a reservoir according to described regulating parameter determination suction tube, the described degree of depth refers to that in described container, water surface to be measured is to the distance of described suction tube port; Sampling unit, for extracting the water body to be measured of described degree of depth instruction by described suction tube.
Preferably, described device also comprises: sampling pump, and described sampling pump is used for described water body to be measured to be drawn in described container.
A kind of water quality on-line monitoring instrument, comprising: get parms unit, for obtaining regulating parameter; Determine degree of depth unit, for calculating the degree of depth inserted in described container according to described regulating parameter, the described degree of depth refers to that in described container, water surface to be measured is to the distance of described suction tube port; Sampling unit, for extracting the water body to be measured of described degree of depth instruction by described suction tube; Detecting unit, detects for the water body described to be measured extracted.
Preferably, also comprise: extracting unit, for described water body to be measured is drawn in described container.
Known via above-mentioned technical scheme, adopt embodiment disclosed by the invention, first regulating parameter is obtained, the degree of depth that described suction tube inserts in a reservoir is determined according to described regulating parameter, then described water body to be measured is being extracted by described suction tube, when described suction tube extracts the water body in described container, water level in described container can decline, when dropping to described suction tube port, described suction tube just can not extract the water body in described container again, object namely by regulating this simple step of the described suction tube degree of depth in a reservoir to reach quantitative sampling, make quantitative sampling more accurate, further, also just more accurate to the detection of described water quality.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the process flow diagram of a kind of liquid quantitative sampling method embodiment disclosed by the invention;
Fig. 2 is the process flow diagram of a kind of liquid on-line monitoring method embodiment disclosed by the invention;
Fig. 3 is the process flow diagram of a kind of quantitative sampling device for liquid embodiment disclosed by the invention;
Fig. 4 is the relation schematic diagram of a kind of quantitative sampling device for liquid disclosed by the invention;
Fig. 5 is the process flow diagram of a kind of liquid on-line monitor embodiment disclosed by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to accompanying drawing 1, be the process flow diagram of a kind of liquid quantitative sampling method embodiment disclosed by the invention, the method can comprise:
Step S101: obtain regulating parameter.
In actual applications, because can sample plurality of liquid, because the pollution level of often kind of liquid may not be identical with the solid particle polluter comprised, so the amount that will sample for different liquid also may not be identical.Need container when sampling and contain testing liquid, so need to fill the cross-sectional area of the container of testing liquid and the sample volume of described testing liquid described in acquisition before sampling.Described regulating parameter can be artificial input, also can be sensor data acquisition system collection.The software or this step that gets parms of hardware implementing with this function can certainly be adopted, such as programming realization or the realization of employing processor etc.
Can certain testing liquid carry out first time sample time, obtain the regulating parameter of described testing liquid and described regulating parameter stored, when afterwards described testing liquid being sampled again, just again need not obtain the regulating parameter of this testing liquid.Can not certainly store parameter, Resurvey parameter during every sub-sampling.
Step S102: the degree of depth inserted in a reservoir according to described regulating parameter determination suction tube.
The described degree of depth refers to that in described container, testing liquid surface is to the distance of described suction tube port.
Concrete can be: calculate the described degree of depth by the described testing liquid sample volume received, also can directly receive described depth value.
That regulate the described suction tube degree of depth in a reservoir can be user, also can be position transducer, detect the surface location of testing liquid in described container with described position transducer after, with this liquid surface for true origin, regulate the described suction tube degree of depth in the above-described container.The software or this step that gets parms of hardware implementing with this function can certainly be adopted, such as programming realization or the realization of employing processor etc.
Before step S102, step can also be comprised: described testing liquid is drawn in described container by sampling pump from testing liquid source.
In order to further make liquid quantitative sampling procedure simple, wall leakage fluid dram can also be set on the wall of described container, when so described testing liquid is drawn in described container by sampling pump from testing liquid source, because the wall of described container has leakage fluid dram, so liquid surface is the highest can only arrive described leakage fluid dram place, so when detecting that described leakage fluid dram place has liquid to flow out, sampling pump stops injecting described testing liquid in described container.Concrete can detect described leakage fluid dram place with liquid flow sensor and flow out with or without liquid.Although employ liquid flow sensor, but do not need there is accurate requirement to the concrete data of fluid flow, as long as liquid can be tested with to flow out, as long as because there is liquid to flow out from described leakage fluid dram, the liquid level that is so just aware of described testing liquid in the position of described leakage fluid dram, so with prior art in low many to the requirement of used sensor accuracy.
If using described leakage fluid dram in the position of described container wall as another regulating parameter, described like this position transducer can directly using the position of this leakage fluid dram as true origin, in the described suction tube of the adjustment degree of depth in the above-described container, because if detect the surface of testing liquid in described container with position transducer, then very high to the accuracy requirement of described position transducer, if liquid level position detects inaccurate in described container, so the inaccurate of quantitative sampling will be caused.So using the position of leakage fluid dram in described container as another one parameter because the position on described liquid in containers surface is determined, described position transducer just need not have detected the position of this liquid surface.Like this by surface location and the degree of depth inserted in described container of testing liquid in presumable two error parameters in step S102 and described container, after this parameter of position having had described leakage fluid dram at described container wall, become an error parameter and namely insert the degree of depth in described container, so not only step has become simple, and error decreases.
Step S103: the testing liquid being extracted the instruction of the described degree of depth by described suction tube.
Can be specifically that peristaltic pump extracts the testing liquid of described degree of depth instruction by described suction tube.
Concrete, described testing liquid can be water body.
Control because peristaltic pump is high precision, described testing liquid in suction tube can be extracted clean, and in peristaltic pump, do not have residual described testing liquid, so what uniquely can bring error is exactly described testing liquid residual on suction tube wall, and the amount of testing liquid for described sampling, described testing liquid residual on described suction tube wall is inappreciable, be sampled as 5ml such as to testing liquid, and the liquid remained on described suction tube wall may only have 0.0005ml.
Because when peristaltic pump extracts the liquid in described container by described suction tube, liquid level in described container can decline, when dropping to described suction tube port, described suction tube just can not extract the liquid in described container again, thus reaches the object of quantitative sampling accurately.
First the embodiment of the present invention obtains regulating parameter, the degree of depth that described suction tube inserts in a reservoir is determined according to regulating parameter, then described testing liquid is being extracted by described suction tube, when described suction tube extracts the liquid in described container, liquid level in described container can decline, when dropping to described suction tube port, described suction tube just can not extract the liquid in described container again, the object namely by regulating this simple step of the described suction tube degree of depth in a reservoir to reach quantitative sampling.
Refer to accompanying drawing 2, be the process flow diagram of a kind of liquid on-line monitoring method embodiment disclosed by the invention, the method can comprise:
Step S201: obtain regulating parameter.
Step S202: the degree of depth inserted in a reservoir according to described regulating parameter determination suction tube.
The described degree of depth refers to that in described container, testing liquid surface is to the distance of described suction tube port;
Step S203: the testing liquid being extracted the instruction of the described degree of depth by described suction tube.
Concrete, described testing liquid can be water body.
Step S204: the described testing liquid extracted is detected.
Because the quantitative sampling of described liquid is accurately, so when carrying out composition detection to described sample, the result obtained also is accurately.Can sample respectively at the diverse location of described testing liquid for same testing liquid, such as, for the liquid flowed in river, river, lake, sea etc., because the solid impurity comprised at the liquid of diverse location may be different, so will sample respectively at the diverse location of described working fluid, then detecting respectively, analyzing the result detected, so just can improve the Detection job of described liquid.
First the embodiment of the present invention obtains regulating parameter, the degree of depth that described suction tube inserts in a reservoir is determined according to regulating parameter, then described testing liquid is being extracted by described suction tube, when described suction tube extracts the liquid in described container, liquid level in described container can decline, when dropping to described suction tube port, described suction tube just can not extract the liquid in described container again, the object namely by regulating this simple step of the described suction tube degree of depth in a reservoir to reach quantitative sampling.Because the quantitative sampling of described liquid is accurately, so when carrying out composition detection to described sample, the result obtained also is accurately, and the step of corresponding liquid on-line monitoring method is also very simple.
Refer to accompanying drawing 3, be the process flow diagram of a kind of quantitative sampling device for liquid embodiment disclosed by the invention, this device can comprise: the unit 301 that gets parms, determine degree of depth unit 302 and sampling unit 303, wherein:
Get parms unit 301, for obtaining regulating parameter;
Determine degree of depth unit 302, for the degree of depth inserted in a reservoir according to described regulating parameter determination suction tube, the described degree of depth refers to that in described container, testing liquid surface is to the distance of described suction tube port.
Bottom leakage fluid dram can also be set at described container bottom, in the ordinary course of things, described bottom leakage fluid dram is closed, with solenoid valve, described bottom leakage fluid dram can be closed, after described peristaltic pump sampling, opens solenoid valve, makes described bottom leakage fluid dram open, liquid in described container is discharged, for sampling is prepared next time.
Sampling unit 303, for extracting the testing liquid of described degree of depth instruction by described suction tube.
The executive agent of concrete described sampling unit can be peristaltic pump.The testing liquid that the described degree of depth can also be indicated by described suction tube by described peristaltic pump extracts to sample cell, is connected between described sample cell with described peristaltic pump by an other suction tube.The volume of the testing liquid that the described degree of depth that the volume of the described testing liquid in described sample cell extracts from described container with described peristaltic pump indicates is the same.
Peristaltic pump of the prior art only has sampled functions, but can by the unit 301 that gets parms, determine that degree of depth unit 302 is integrated in peristaltic pump, allow integrated after peristaltic pump get parms, then according to the degree of depth that described parameter regulates described suction tube to insert in the above-described container, after determining the described degree of depth, sampling.
Described device can also comprise: extracting unit, for being drawn in described container by described testing liquid.Concrete, the executive agent of described extracting unit is sampling pump.
Concrete, in the embodiment of the present invention, a kind of quantitative sampling device for liquid can be a kind of water quality quantitative sampling device.
First the embodiment of the present invention obtains regulating parameter by the unit 301 that gets parms, then call and determine that degree of depth unit 302 determines the degree of depth that described suction tube inserts in a reservoir, then described testing liquid is extracted through sampling unit 303 by described suction tube, when described suction tube extracts the liquid in described container, liquid level in described container can decline, when dropping to described suction tube port, described suction tube just can not extract the liquid in described container again, object namely by regulating this simple step of the described suction tube degree of depth in a reservoir to reach accurate quantitative analysis sampling, and sampler structure is simple.
In order to make those skilled in the art's understanding the present embodiment clearly, with an example, the process that described liquid quantitative samples is described again below.Refer to the relation schematic diagram that accompanying drawing 4, Fig. 4 is quantitative sampling device for liquid described in the present invention.
First shut electromagnetic valve 400 in Fig. 4, testing liquid is extracted in described container 403 from testing liquid source 402 by sampling pump 401 again, stop injecting testing liquid in described container 403 when described testing liquid surface arrives wall leakage fluid dram 404 place of described container 403, then peristaltic pump 405 is adjusted the degree of depth of suction tube 406 in described container 403 by the parameter received, after adjustment, described peristaltic pump 405 starts to extract the testing liquid in described container 403, and described testing liquid is extracted to sample cell 407, when liquid level in described container 403 drop to the port 410 of described suction tube 406 time, just the testing liquid in described container 403 can not extracted, such primary sample just finishes, then solenoid valve 400 is opened, the leakage fluid dram 408 of bottom in described container 403 is opened, testing liquid in described container 403 is discharged by liquid outlet 409.
Refer to accompanying drawing 5, be the process flow diagram of a kind of liquid on-line monitor embodiment disclosed by the invention, this device can comprise:
Get parms unit 301, for obtaining regulating parameter;
Determine degree of depth unit 302, for calculating the degree of depth inserted in described container according to described regulating parameter, the described degree of depth refers to that in described container, testing liquid surface is to the distance of described suction tube port;
Sampling unit 303, for extracting the testing liquid of described degree of depth instruction by described suction tube.
The executive agent of concrete described sampling unit can be peristaltic pump.
Detecting unit 501, detects for the described testing liquid extracted.
Described monitor can also comprise: extracting unit, for being drawn in described container from described testing liquid source by described testing liquid.
Concrete, the executive agent of described extracting unit is sampling pump.
Concrete, in the embodiment of the present invention, a kind of liquid on-line monitor can be a kind of water quality on-line monitoring instrument.
First the embodiment of the present invention obtains regulating parameter by the unit 301 that gets parms, then call and determine that degree of depth unit 302 determines the degree of depth that described suction tube inserts in a reservoir, then described testing liquid is extracted through sampling unit 303 by described suction tube, when described suction tube extracts the liquid in described container, liquid level in described container can decline, when dropping to described suction tube port, described suction tube just can not extract the liquid in described container again, object namely by regulating this simple step of the described suction tube degree of depth in a reservoir to reach quantitative sampling, then the testing liquid taken out is detected according to detecting unit 501.Because the quantitative sampling of described liquid is accurately, and sampler structure is simple, so when carrying out composition detection to described sample, the result obtained also is accurately, and corresponding liquid on-line monitor structure is also very simple.
It should be noted that, each embodiment in this instructions all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.For device or system class embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Also it should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.
Above the rollback method of a kind of non-relational database that the embodiment of the present invention provides, Apparatus and system are described in detail, apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment is just for helping method and the thought thereof of understanding the embodiment of the present invention; Meanwhile, for one of ordinary skill in the art, according to the thought of the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. a water body quantitative sampling method, is characterized in that, comprises and obtains regulating parameter by peristaltic pump, also comprises step:
The degree of depth that described peristaltic pump inserts in a reservoir according to described regulating parameter determination suction tube, the described degree of depth refers to that in described container, water surface to be measured is to the distance of described suction tube port;
Described peristaltic pump extracts the water body to be measured of described degree of depth instruction by described suction tube;
Wherein, described acquisition regulating parameter step is specially: obtain the cross-sectional area of described container and the sample volume of described water body to be measured.
2. method according to claim 1, is characterized in that, the wall of described container is provided with wall leakage fluid dram, then described extracted the water body to be measured of described degree of depth instruction by described suction tube before, also comprise step:
Water body to be measured is drawn into described container to sampling pump from water body source to be measured until described water body to be measured is after described wall leakage fluid dram outflow, stops extracting;
Accordingly, the concrete steps adjusting the described suction tube degree of depth are in the above-described container: adjust the distance of described suction tube port apart from described wall leakage fluid dram.
3. method according to claim 2, it is characterized in that, for water body to be measured described in same, the diverse location place in described water body source to be measured samples respectively.
4. an on-line water quality monitoring method, is characterized in that, obtains regulating parameter, comprises step:
According to the degree of depth that regulating parameter determination suction tube inserts in a reservoir, the described degree of depth refers to that in described container, water surface to be measured is to the distance of described suction tube port;
The water body to be measured of described degree of depth instruction is extracted by described suction tube;
The described water body to be measured extracted is detected;
Wherein, described acquisition regulating parameter step is specially: obtain the cross-sectional area of described container and the sample volume of described water body to be measured.
5. a water body quantitative sampling device, is characterized in that, comprising:
Get parms unit, and for obtaining regulating parameter, described regulating parameter is specially the cross-sectional area of container and the sample volume of water body to be measured;
Determine degree of depth unit, for the degree of depth inserted in a reservoir according to described regulating parameter determination suction tube, the described degree of depth refers to that in described container, water surface to be measured is to the distance of described suction tube port;
Sampling unit, for extracting the water body to be measured of described degree of depth instruction by described suction tube;
Described device also comprises: sampling pump,
Described sampling pump is used for described water body to be measured to be drawn in described container.
6. a water quality on-line monitoring instrument, is characterized in that, comprising:
Get parms unit, and for obtaining regulating parameter, described regulating parameter is specially the cross-sectional area of container and the sample volume of water body to be measured;
Determine degree of depth unit, for calculating the degree of depth inserted in described container according to described regulating parameter, the described degree of depth refers to that in described container, water surface to be measured is to the distance of suction tube port;
Sampling unit, for extracting the water body to be measured of described degree of depth instruction by described suction tube;
Detecting unit, detects for the water body described to be measured extracted;
Extracting unit, for being drawn into described water body to be measured in described container.
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| CN201110300834.0A CN102507886B (en) | 2011-09-30 | 2011-09-30 | Online water quality monitoring method and instrument |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020444B (en) * | 2017-11-17 | 2020-12-29 | 上海市城市排水监测站有限公司 | Water level follow-up sampling system |
| CN108426742A (en) * | 2018-05-28 | 2018-08-21 | 浙江安控科技有限公司 | A kind of accurate sampler device of reagent |
| CN111220599B (en) * | 2018-11-24 | 2022-04-29 | 朱燕超 | Sampling device and sampling method for water quality detection |
| CN112403304B (en) * | 2020-11-20 | 2022-10-28 | 深圳市科曼医疗设备有限公司 | Method for improving absorbing-discharging mixing efficiency |
| CN114217040B (en) * | 2021-12-29 | 2023-10-17 | 浙江中环瑞蓝科技发展有限公司 | Automatic quality control equipment for automatically monitoring water environment |
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