CN208736791U - Water quality transparency detection device - Google Patents
Water quality transparency detection device Download PDFInfo
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- CN208736791U CN208736791U CN201820910872.5U CN201820910872U CN208736791U CN 208736791 U CN208736791 U CN 208736791U CN 201820910872 U CN201820910872 U CN 201820910872U CN 208736791 U CN208736791 U CN 208736791U
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- silicon photocell
- laser emitter
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- water quality
- digital conversion
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Abstract
A kind of water quality transparency detection device, is related to water quality inspection technique field, and the solution is to improve measurement accuracy.The device includes pedestal, and the laser emitter, the silicon photocell, detection circuit that are mounted in the electrical storehouse of pedestal；The laser emitter in the optical path between laser emitter and silicon photocell, has one section of optical path to be exposed to exterior space with silicon photocell formation light connects；The detection circuit includes that master controller, electric current turn voltage module, analog-to-digital conversion module；The current signal output end mouth of the silicon photocell successively turns voltage module through electric current, analog-to-digital conversion module is connected to the data port of master controller.Device provided by the utility model is able to achieve continuous measurement.
Description
Technical field
The utility model relates to water quality inspection techniques, more particularly to a kind of technology of water quality transparency detection device.
Background technique
Usual water is colorless and transparent liquid, but the water quality in River Channel is due to containing silt, microorganisms in water, life
The substances such as living and industrial discharge cause water body muddiness and coloration to change, transparency decline, and human eye sense organ is bad.The index shows
The alteration in nutrition of water quality causes the variation of the survival environmental conditions of aqueous bio.With the raising needs pair of water body environmental requirement
River water body carries out the monitoring of continuous transparency.
There are mainly two types of for existing water quality transparency detection:
1) artificial detection is implemented using Sai Shi disk method in scene, and the detection instrument of this method is a diameter 20cm disk, circle
Disk upper surface indicates the label of the black and white quartering, and is fixed with rope in disc centre, and disk bottom surface is equipped with weight, and when detection will
Slowly into the water, after not seeing the label of the black and white on disk visually, measure rope enters water length to disk, further according to rope
The transparency for entering water length computation water-outlet body of rope.
2) cross method examinations being used in laboratory, the detection instrument of this method is a colourless plexiglass cylinder,
The length of cylinder is 330MM, internal diameter 25MM, and 1MM indexing is indicated on cylinder, and cylinder bottom is equipped with white tile, indicates on tile black
The water sample mixed well is transferred in cylinder and is filled by color cross, when detection, is visually observed from nozzle, is beaten vertically downward simultaneously
The switch for opening cylinder lower end water outlet discharges water, and stops when until water level decreasing is to the black cross figure that can just recognize on tile
It only discharges water, then reads the height of water column, the transparency of water-outlet body is calculated further according to water-column.
Above two water quality transparency detection method requires to observe and measure under certain illuminating ray, and is seen by human eye
The differentia influence of survey, measurement accuracy is poor, using also being limited by environmental change, can not continuously measure, especially at the scene
It cannot be used when night is without light.
Utility model content
For above-mentioned defect existing in the prior art, the technical problem to be solved by the utility model is to provide a kind of surveys
Accuracy of measurement is high, and is not influenced by ambient lighting, and the water quality transparency detection device continuously measured is able to achieve.
In order to solve the above-mentioned technical problem, a kind of water quality transparency detection device provided by the utility model, feature
It is: including pedestal, laser emitter, silicon photocell, detection circuit；
The pedestal is equipped with closed electrical storehouse, and the electrical storehouse is equipped with light exit window, light entrance window, Laser emission
Device, silicon photocell, detection circuit are separately mounted in electrical storehouse；
The laser emitter and silicon photocell form light connects, and the optical path between laser emitter and silicon photocell is from swashing
After optical transmitting set sets out, the light exit window in electrical storehouse is initially passed through, exterior space is entered, is then passed through the light entrance window in electrical storehouse,
Reach silicon photocell；
The detection circuit includes that master controller, electric current turn voltage module, analog-to-digital conversion module；The electricity of the silicon photocell
It flows signal output port and turns the input end of analog signal mouth that voltage module is connected to analog-to-digital conversion module through electric current, electric current turns voltage-mode
Block is used to input analog-to-digital conversion module after the current signal that silicon photocell exports is converted to voltage signal, analog-to-digital conversion module
The interconnection of the data port of digital signal output end mouth and master controller.
Further, the electrical storehouse is laid in the left end of pedestal, and the right end of pedestal is equipped with the first reflecting mirror, the second reflection
Mirror successively passes through after the light exit window that the optical path between laser emitter and silicon photocell passes through electrical storehouse enters exterior space
First reflecting mirror, the second reflecting mirror reflection after, be then passed through the light entrance window in electrical storehouse, reach silicon photocell.
Further, the laser emitter is the laser emitter for the feux rouges that launch wavelength is 650nm.
Water quality transparency detection device provided by the utility model, passes through the cooperation of laser emitter and silicon photocell, root
Water quality transparency is calculated automatically according to the attenuation degree of laser received by silicon photocell, has the characteristics that measurement accuracy is high,
And do not influenced by ambient lighting, it can be carried out measuring under any environment, be able to achieve continuous measurement.
Detailed description of the invention
Fig. 1 is the main view of the water quality transparency detection device of the utility model embodiment；
Fig. 2 is the section view after line A-A cutting of the water quality transparency detection device of the utility model embodiment in Fig. 1
Figure；
Fig. 3 is the working principle block diagram of the water quality transparency detection device of the utility model embodiment.
Specific embodiment
The embodiments of the present invention are described in further detail below in conjunction with Detailed description of the invention, but the present embodiment and are not had to
In limitation the utility model, all similar structures and its similar variation using the utility model should all be included in the utility model
Protection scope, the pause mark in the utility model indicates the relationship of sum.
As shown in Figure 1-Figure 3, a kind of water quality transparency detection device, feature provided by the utility model embodiment exist
In: including pedestal D1, laser emitter S1, silicon photocell B1, detection circuit U0；
The pedestal D1 is equipped with closed electrical storehouse, and the electrical storehouse is equipped with light exit window W1, light entrance window W2, swashs
Optical transmitting set S1, silicon photocell B1, detection circuit U0 are separately mounted in electrical storehouse；
The laser emitter S1 and silicon photocell B1 forms light connects, the optical path between laser emitter and silicon photocell
After laser emitter S1, the light exit window W1 in electrical storehouse is initially passed through, exterior space is entered, is then passed through the light in electrical storehouse
Entrance window W2 reaches silicon photocell B1；
The detection circuit U0 includes that master controller U1, electric current turn voltage module U2, analog-to-digital conversion module U3；The silicon light
The current signal output end mouth of battery B1 turns the input end of analog signal that voltage module U2 is connected to analog-to-digital conversion module U3 through electric current
Mouthful, electric current turns voltage-mode and founds block for inputting analog-to-digital conversion mould after the current signal that silicon photocell exports is converted to voltage signal
Block, the digital signal output end mouth of analog-to-digital conversion module U3 and the data port of master controller U1 interconnect.
In the utility model embodiment, the electrical storehouse is laid in the left end of pedestal D1, and the right end of pedestal D1 is equipped with first
Reflecting mirror J1, the second reflecting mirror J2, the light exit window that the optical path between laser emitter and silicon photocell passes through electrical storehouse enter
To after exterior space, successively through the first reflecting mirror, the second reflecting mirror reflection after, be then passed through the light entrance window in electrical storehouse, reach
Silicon photocell；By the reflection of the first reflecting mirror, the second reflecting mirror, optical path can be made to turn back, so as to so that laser emitter,
Silicon photocell is laid in ipsilateral, can substantially reduce the length of pedestal, the dosage of detected water sample can also be greatly decreased.
In the utility model embodiment, the laser emitter is the laser hair for the feux rouges that launch wavelength is 650nm
Emitter, the feux rouges that wavelength is 650nm attenuation coefficient in river water are small.
In the utility model embodiment, the master controller U1, electric current turn voltage module U2, analog-to-digital conversion module U3 is
The prior art, master controller is using single-chip microcontroller.
The working principle of the utility model embodiment is as follows:
Water quality transparency detection device is put into tested water body, the red laser of laser transmitter projects is by being tested water
Body, then through the first reflecting mirror, the second reflecting mirror reflection after be radiated at silicon photocell (spectral sensitivity of silicon photocell be close to people
The sensitivity of eye) on, heterogeneity is contained in different tested water bodys, can also generate different degrees of decline when reaching silicon photocell
Subtract (laser energy can be absorbed by water body), the irradiation energy that silicon photocell is absorbed can also change, and silicon photocell is according to institute
The intensity of the red laser received generates the current signal of respective strengths, and turns voltage module by electric current and be converted to voltage signal
After input analog-to-digital conversion module, then input master controller after being converted to digital signal by analog-to-digital conversion module, changed by master controller
Calculating is water quality transparency.
The calculation formula of water quality transparency are as follows:
Wherein, ST is water quality transparency,For intensity (the present embodiment of silicon photocell red laser based on the received
The optical path spacing of middle laser emitter and silicon photocell is 21cm),For the half-light intensity of silicon photocell when there is no light.
Claims (3)
1. a kind of water quality transparency detection device, it is characterised in that: including pedestal, laser emitter, silicon photocell, detection electricity
Road；
The pedestal be equipped with closed electrical storehouse, the electrical storehouse be equipped with light exit window, light entrance window, laser emitter,
Silicon photocell, detection circuit are separately mounted in electrical storehouse；
The laser emitter and silicon photocell form light connects, and the optical path between laser emitter and silicon photocell is sent out from laser
After emitter is set out, the light exit window in electrical storehouse is initially passed through, exterior space is entered, be then passed through the light entrance window in electrical storehouse, reached
Silicon photocell；
The detection circuit includes that master controller, electric current turn voltage module, analog-to-digital conversion module；The electric current of the silicon photocell is believed
Number output port turns the input end of analog signal mouth that voltage module is connected to analog-to-digital conversion module through electric current, and electric current turns voltage module use
Analog-to-digital conversion module, the number of analog-to-digital conversion module are inputted after the current signal for exporting silicon photocell is converted to voltage signal
The interconnection of the data port of signal output port and master controller.
2. water quality transparency detection device according to claim 1, it is characterised in that: the electrical storehouse is laid in pedestal
The right end of left end, pedestal is equipped with the first reflecting mirror, the second reflecting mirror, and the optical path between laser emitter and silicon photocell passes through electricity
After the light exit window of gas storehouse enters exterior space, successively through the first reflecting mirror, the second reflecting mirror reflection after, be then passed through electrical
The light entrance window in storehouse reaches silicon photocell.
3. water quality transparency detection device according to claim 1, it is characterised in that: the laser emitter is for sending out
The laser emitter of the feux rouges of a length of 650nm of ejected wave.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721748950 | 2017-12-15 | ||
| CN2017217489508 | 2017-12-15 |
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| CN208736791U true CN208736791U (en) | 2019-04-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693121A (en) * | 2017-12-15 | 2018-10-23 | 上海磐波智能科技有限公司 | water quality transparency detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693121A (en) * | 2017-12-15 | 2018-10-23 | 上海磐波智能科技有限公司 | water quality transparency detection device |
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