CN103398991A - Novel double-channel fluorescence-method dissolved oxygen detector - Google Patents
Novel double-channel fluorescence-method dissolved oxygen detector Download PDFInfo
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- CN103398991A CN103398991A CN201310343975XA CN201310343975A CN103398991A CN 103398991 A CN103398991 A CN 103398991A CN 201310343975X A CN201310343975X A CN 201310343975XA CN 201310343975 A CN201310343975 A CN 201310343975A CN 103398991 A CN103398991 A CN 103398991A
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Abstract
A novel double-channel fluorescence-method dissolved oxygen detector is characterized by comprising a first sensor for detection of the content of dissolved oxygen by adopting a fluorescence quenching principle, a second sensor for detection of data of the dissolved oxygen, and a controller including a double-channel input module connected with the first sensor and the second sensor, a main control module connected with the input module, a display and key module connected with the main control module, a storage module connected with the display and key module, an output module connected with the display and key module, a control module connected with the output module, and a power supply module for supplying power for each module in the controller. By adopting the above technical schemes, the novel double-channel fluorescence-method dissolved oxygen detector has the beneficial effects that the detector can realize online continuous measurement, is guardless, realizes real water quality automatic monitoring, at the same time, detects two channels of the dissolved oxygen, reduces costs, and has the characteristics of small amount of maintenance, Chinese digital output, stable function and high accuracy.
Description
Technical field
The present invention relates to the detector field, espespecially a kind of novel binary channels fluorescence method dissolved oxygen DO detector.
Background technology
At present, along with people's living standard is become better and better, the propelling of urbanization, the water pollution in city is day by day serious, and factory makes, sanitary wastewater, and various sewage discharges, cause immeasurable destruction to environment, therefore, administers very urgent.Existing technology will differentiate through the chemical examination that various kinds is carried out in different laboratories the detection of water quality, and the instrument of use is complicated, of a great variety, the time of troublesome poeration, evaluation is long, expense is high; Can be divided into iodimetric titration, oxygen electrode method, Fiber Optic Sensor and fluorescence method, iodimetric titration: thus be to calculate the content of dissolved oxygen DO by a series of chemical reaction, this pure chemistry method precision is high, but chemical reaction complicated, be vulnerable to disturb, Measuring Time is long, is difficult to realize on-line monitoring; Oxygen electrode method: can realize in-site measurement, but need the thing of use complicated, instrument needs to safeguard; Fiber Optic Sensor: complex process, cost high inconvenient with apply widely and promote; These methods all need more professional knowledge frequently to see the content of understanding and calculating dissolved oxygen DO, and measuring instrument needs regularly to safeguard.
Summary of the invention
For addressing the above problem, the invention provides a kind of novel binary channels fluorescence method dissolved oxygen DO detector, it can realize the on-line continuous measurement, and left unguarded, realize real automatic water quality monitoring system, detect simultaneously the two-way dissolved oxygen DO, reduced cost, and it is little to have a maintenance, the output of Chinese numeral, function-stable, the characteristics that precision is high.
For achieving the above object, the present invention adopts following technical scheme to be: a kind of novel binary channels fluorescence method dissolved oxygen DO detector is characterized in that: comprising:
First sensor, adopt the fluorescent quenching know-why to detect dissolved oxygen content;
The second sensor, for detection of the data of dissolved oxygen DO; And,
Controller, comprise: with first sensor and the output module of being connected binary channels load module, the main control module that is connected with load module, the demonstration that is connected with main control module and the key-press module that sensor is connected, the memory module that is connected with demonstration and key-press module, with demonstration and key-press module, being connected, the control module that is connected with output module, and be the power module of modules power supply in controller.
After adopting above-mentioned technical scheme, the present invention is placed on the place of required detection dissolved oxygen DO by first sensor and the second sensor, powered by power module, the fluorescent quenching know-why that adopts sensor detects with main control module and adopts the data that advanced algorithm calculates and processes sensor detects, and makes the precision of detection accurately high than the precision that general Fiber Optic Sensor detects.
Preferably, described first sensor and described the second sensor adopt the mode of screw thread rotation to change the film cap.
After adopting technique scheme, when the present invention can have dirt at the probe membrane cap of described first sensor and described the second legend, change the film cap, so just can not affect the measurement result of back; Increase simultaneously the serviceable life of this product, reduce the maintenance workload in later stage.
Preferably, to adopt mg/L be that range or the ppm of unit is the range of unit for described first sensor and described the second sensor.
After adopting technique scheme, the present invention can select the range that is fit to according to the dissolved oxygen content of measuring, and the result of measuring like this is more accurate, and error is little.
Preferably, described first sensor and described the second sensor adopt the 4-20mA analog current signal to transmit the data that voltage signal, SDI-12 interface protocol, RS232/MODBUS interface protocol or RS485/MODBUS interface protocol will detect and are transported to the binary channels load module.
After adopting above-mentioned technical scheme, first sensor of the present invention and described the second sensor can will detect fast in some sewage rivers and the numerous testing environment of pasture and water data are with by load module, being transferred to main control module, simultaneously detector also can use with a little contaminated environment more abominable the content of water quality detection dissolved oxygen DO, can not be interfered and affect testing result, applicability is more general.
Preferably, described binary channels load module is connected with described the second sensor with described first sensor by different serial ports respectively.
After adopting above-mentioned technical scheme, the present invention can be placed on respectively the different local dissolved oxygen contents of different position probing with first sensor and the second sensor, when some needed multi-group data and sampling Detection, the transmitting procedure that the binary channels load module can be accelerated data shortened the time of transmission.
Preferably, described main control module, the number that adopts advanced account form processes sensor to detect, and accessible measurement range is the sensor in 0 to 10000NTU.
After adopting technique scheme, the present invention can install the sensor of different measurement ranges according to different environment, make the scope of detection more accurate, reduces the error of measuring, and allows the user that better selection is arranged; Wherein, through inspection information, above-mentioned NTU is the unit that sensor detects dissolved oxygen content.
Preferably, described demonstration and key-press module comprise: can show numeral, Chinese character, the LCD display of English and the key device of 8 buttons.
After adopting technique scheme, the present invention can show the data after processing by LCD display by different modes, both had data, also has Chinese character, the personnel that are not specialty can be understood, make applicability of the present invention wider, the user can revise parameter and sensing range is set by key device is set simultaneously.
Preferably, described output module adopts 4 to 20mA industrial standard electric current outputs, 0 to 20mA industrial standard electric current output, the output of MODBUS digital communication agreement, the output of PROFIBUS digital communication agreement or the output of HART digital communication agreement.
Preferably, described control module is used for connecting the host computer of opertaing device or the relay of control peripherals.
After adopting technique scheme, the present invention can select the different way of outputs according to user's demand, in the control to different, can select the different way of outputs.
Preferably, described power module adopts 110 to 220V AC power or 24V direct supply.
After adopting technique scheme, the power range that tool of the present invention can choice for use is large,, in the situation that run into specially, is not limited only to use a kind of Power supply, has improved the applicability of dissolving detector.
Beneficial effect of the present invention is: the present invention can realize the on-line continuous measurement of dissolved oxygen DO, and left unguarded, realize real automatic water quality monitoring; The controller of binary channels input can detect the two-way dissolved oxygen DO simultaneously, when needs detect multi-group data, the present invention needs the time of work to see that one reduces by half, simultaneously also the water quality in different places can be detected, do not need movable sensor to arrive different places, reduce the cost that detects, improved properties of product.Sensor uses state-of-the-art fluorescence method principle, makes Product Precision and stability high, and the sensor film cap can be changed by screw thread rotation, makes later maintenance convenient simple; Simultaneously the user can be by show and key-press module easily to instrument in all parameters arrange, in addition, the dissolved oxygen DO detector is widely used in: the oxygen in water in the fields such as waterworks, municipal wastewater factory, fish culture industry, stream lake, river detects.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present invention.
Fig. 2 is the structural representation of the another kind of embodiment of the present invention.
Embodiment
Accompanying drawings describes these embodiments of the invention:
See also shown in Fig. 1-2, the present invention, about a kind of novel binary channels fluorescence method dissolved oxygen DO detector, is characterized in that: comprising:
First sensor 1, adopt the fluorescent quenching know-why to detect dissolved oxygen content;
The second sensor 3, for detection of the data of dissolved oxygen DO; And,
Controller 2, comprise: with first sensor 1 and the output module 25 of being connected binary channels load module 21, the main control module 22 that is connected with binary channels load module 21, the demonstration that is connected with main control module 22 and the key-press module 23 that sensor 3 is connected, the memory module 24 that is connected with demonstration and key-press module 23, with memory module 24, being connected, the control module 26 that is connected with output module 25, and be the power module 27 of modules power supply in controller.
Above-mentioned first sensor 1 and described the second sensor 3 adopt the mode of screw thread rotation to change the film cap.
Range or ppm that above-mentioned first sensor 1 and described the second sensor 3 employing mg/L are unit are the range of unit.
The data that above-mentioned first sensor 1 and described the second sensor 3 adopt 4-20mA analog current signal transmission voltage signal, SDI-12 interface protocol, RS232/MODBUS interface protocol or RS485/MODBUS interface protocol to detect are transported to binary channels load module 21.
Above-mentioned binary channels load module 21 is connected with described the second sensor 3 with described first sensor 1 by different serial ports respectively.
Above-mentioned main control module 22, the number that adopts advanced account form processes sensor to detect, and accessible measurement range is the sensor in 0 to 10000NTU.
Above-mentioned demonstration and key-press module comprise: can show numeral, Chinese character, the LCD display 231 of English and the key device 232 of 8 buttons.
Above-mentioned output module 25 adopts 4 to 20mA industrial standard electric current outputs, 0 to 20mA industrial standard electric current output, the output of MODBUS digital communication agreement, the output of PROFIBUS digital communication agreement or the output of HART digital communication agreement.
The relay that above-mentioned control module 26 is used for connecting the host computer of opertaing device or controls peripherals.
Above-mentioned power module 27 adopts 110 to 220V AC power or 24V direct supply.
After adopting technique scheme, the specific works flow process of the present embodiment is:
A, switch on power after, power module 27 provides continual and steady current/voltage for the quality detector;
B, when described first sensor 1 and described the second sensor 3 are placed in corresponding occasion, binary channels load module 21 therefrom reads relevant data through sensors;
C, then binary channels load module 21 passes to analysis and the further senior calculating of carrying out data in CPU main control module 22 to the data that comprise in signal source again;
D, finally by showing and key-press module 23 represents current value to the user with display screen, the menu editing function is provided simultaneously, the user can use button to revise voluntarily some parameters and configuration according to oneself requirement.Display screen can provide numeral and Chinese character output to facilitate the user to read;
E, final data are by NAND FLASH﹠amp; USB CONNECTOR module records stores 24;
F, simultaneously, output module 25 uses HART, and the agreements such as MODBUS or electric current output are with current data and parameter is transferred to PC or PLC carries out focusing on of data.
Above embodiment is only that the preferred embodiment of the present invention is described; not scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineering technical personnel in this area make technical scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (10)
1. novel binary channels fluorescence method dissolved oxygen DO detector is characterized in that: comprising:
First sensor, adopt the fluorescent quenching mode to detect dissolved oxygen content;
The second sensor, for detection of the content of dissolved oxygen DO; And,
Controller, comprise: with first sensor and the output module of being connected the binary channels load module of sensor generation electric coupling, the main control module that is connected with load module, the demonstration that is connected with main control module and key-press module, the memory module that is connected with demonstration and key-press module, with demonstration and key-press module, being connected, the control module that is connected with output module, and be the power module of modules power supply in controller.
2. novel binary channels fluorescence method dissolved oxygen DO detector according to claim 1 is characterized in that: described first sensor and described the second sensor adopt the mode of screw thread rotation to change the film cap.
3. novel binary channels fluorescence method dissolved oxygen DO detector according to claim 1 is characterized in that: it is that range or the ppm of unit is the range of unit that described first sensor and described the second sensor adopt mg/L.
4. novel binary channels fluorescence method dissolved oxygen DO detector according to claim 1 is characterized in that: described first sensor and described the second sensor adopt the 4-20mA analog current signal to transmit the data that voltage signal, SDI-12 interface protocol, RS232/MODBUS interface protocol or RS485/MODBUS interface protocol will detect and are transported to the binary channels load module.
5. novel binary channels fluorescence method dissolved oxygen DO detector according to claim 1, it is characterized in that: described binary channels load module is connected with described the second sensor with described first sensor by different serial ports respectively.
6. novel binary channels fluorescence method dissolved oxygen DO detector according to claim 1 is characterized in that: the accessible measurement range of described main control module is the sensor in 0 to 10000NTU.
7. novel binary channels fluorescence method dissolved oxygen DO detector according to claim 1 is characterized in that:
Described demonstration and key-press module comprise: can show numeral, Chinese character, the LCD display of English and the key device of 8 buttons.
8. novel binary channels fluorescence method dissolved oxygen DO detector according to claim 1 is characterized in that: described output module adopts 4 to 20mA industrial standard electric currents outputs, 0 to 20mA industrial standard electric current output, the output of MODBUS digital communication agreement, the output of PROFIBUS digital communication agreement or the output of HART digital communication agreement.
9. novel binary channels fluorescence method dissolved oxygen DO detector according to claim 1, is characterized in that: the relay that described control module is used for connecting the host computer of opertaing device or controls peripherals.
10. novel binary channels fluorescence method dissolved oxygen DO detector according to claim 1, is characterized in that: described power module employing 110 to 220V AC power or 24V direct supply.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891168A (en) * | 2014-12-05 | 2016-08-24 | 江南大学 | Determination method for trace dissolved oxygen in organic solvent |
| CN106324067A (en) * | 2016-08-19 | 2017-01-11 | 北海市蕴芯电子科技有限公司 | Aquaculture dissolved oxygen intelligent network monitoring data system |
| CN107389643A (en) * | 2017-08-04 | 2017-11-24 | 山东省科学院海洋仪器仪表研究所 | A kind of dissolved oxygen sensing method and device based on binary channels phase lock amplifying technology |
| CN114486828A (en) * | 2022-01-19 | 2022-05-13 | 安徽清大云博环保科技有限公司 | Dissolved oxygen analyzer capable of rapidly measuring |
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Application publication date: 20131120 |