CN202093016U - Multi-parameter comprehensive COD (Chemical Oxygen Demand) water quality monitoring system - Google Patents
Multi-parameter comprehensive COD (Chemical Oxygen Demand) water quality monitoring system Download PDFInfo
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- CN202093016U CN202093016U CN2011201659535U CN201120165953U CN202093016U CN 202093016 U CN202093016 U CN 202093016U CN 2011201659535 U CN2011201659535 U CN 2011201659535U CN 201120165953 U CN201120165953 U CN 201120165953U CN 202093016 U CN202093016 U CN 202093016U
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Abstract
The utility model discloses a multi-parameter comprehensive COD water quality monitoring system, comprising a wireless transmission system (2), a monitor terminal (3) which is located away from the water area to be tested and in the monitoring room, and at least one multi-parameter sensing terminal (1) arranged on the water area to be tested. Each multi-parameter sensing terminal (1) is wirelessly connected with the inlet end of the wireless transmission system (2); the outlet end of the wireless transmission system (2) is wirelessly connected with the monitor terminal (3). Due to the adoption of the monitoring system for monitoring the water area to be detected, the more accuracy chemical oxygen demand data can be acquired.
Description
Technical field
The utility model relates to the COD water quality monitoring system of a kind of monitoring system of water quality organic pollutants, particularly a kind of multi-parameter comprehensive.
Background technology
Chemical oxygen demand (COD) (COD) is the measurement to organism in the water and inorganic oxide substrate concentration, has reflected the degree that water body is polluted by reducing substances, is the important indicator of water quality assessment.It is very general that water body is subjected to organic pollutants, so COD often is used as one of index of reflection organic pollutants degree.
Ultraviolet absorptivity (UVA) has come out for many years as the overall target of an organic contamination, it is a pure physical optics index, does not use chemical reagent, non-secondary pollution in the mensuration process, with the mensuration of traditional chemical oxidization method in essence difference is arranged, can realize the on-line monitoring of miniaturization; Occur portioned product at present at home and abroad, obtained some application.But at present existing this series products is owing to select the problems such as unicity of parameter, so cause the testing result about chemical oxygen demand (COD) (COD) of gained not too accurate, what cause that this product can not scale promotes the use of.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of COD water quality monitoring system of multi-parameter comprehensive; Adopt this monitoring system can obtain chemical oxygen demand (COD) data more accurately.
In order to solve the problems of the technologies described above, the utility model provides a kind of COD water quality monitoring system of multi-parameter comprehensive, comprises wireless transmitting system, is positioned at away from waters to be measured and is positioned at the monitoring terminal of Control Room and the multiparameter sensing terminal that is positioned over waters to be measured of at least one;
Each multiparameter sensing terminal all links to each other with the entrance point of wireless transmitting system, and the endpiece of wireless transmitting system links to each other with monitoring terminal.
Improvement as the COD water quality monitoring system of multi-parameter comprehensive of the present utility model: the multiparameter sensing terminal comprises sensing probe, A/D modular converter, data acquisition module, sensor microprocessor and the sensor wireless transceiver module that links to each other with the sensor solar panel respectively, sensing probe, A/D modular converter, data acquisition module, sensor microprocessor and sensor wireless transceiver module link to each other successively, and the sensor wireless transceiver module links to each other with sensing probe;
Wireless transmitting system comprises GPRS telenet relay station and the ZigBee LAN (Local Area Network) relay station of at least one;
Each ZigBee LAN (Local Area Network) relay station comprises microprocessor I, memory I and the radio receiving transmitting module I that links to each other with solar panel I respectively, and microprocessor I links to each other with memory I with radio receiving transmitting module I respectively;
GPRS telenet relay station comprises microprocessor II, memory I I and the radio receiving transmitting module II that links to each other with solar panel II respectively, and microprocessor II links to each other with radio receiving transmitting module II with memory I I respectively;
Monitoring terminal comprises display, industrial computer and terminal wireless transceiver module, and industrial computer links to each other with the terminal wireless transceiver module with display respectively;
An each sensor wireless transceiver module and wireless linking to each other of radio receiving transmitting module I, each radio receiving transmitting module I links to each other with radio receiving transmitting module II is wireless; Radio receiving transmitting module II links to each other with the terminal wireless transceiver module is wireless.
Further improvement as the COD water quality monitoring system of multi-parameter comprehensive of the present utility model: sensing probe is made up of these 4 kinds of sensing probes of uv absorption sensing probe, turbidity sensing probe, temperature sensing probe and pH value sensing probe.
The inventor finds in the invention process of reality: the factor that has various interference COD to measure in the COD of UVA method measures, except modal turbidity, the absorptivity that the UVA method records also has substantial connection with temperature and two parameters of pH value of water body.Therefore be provided with monitoring system of the present utility model.
In the utility model, the multiparameter sensing terminal is partly formed functions such as the sensing of various parameters, data acquisition in the responsible waters to be measured by sensing probe (for the multiparameter sensing probe), power supply (sensor solar panel), A/D modular converter, data acquisition module, sensor microprocessor etc.
In the utility model, wireless transmitting system is responsible for data transmission with each multiparameter sensing terminal to monitoring terminal, and the instruction with monitoring terminal simultaneously transfers to each multiparameter sensing terminal.
In the utility model, monitoring terminal is made up of industrial computer, display etc., and the sensing data that industrial computer is responsible for collecting carries out the multi-parameter comprehensive analyzing and processing, calculates the COD data that embody the water quality organic pollutants accurately.
Working mechanism of the present utility model is:
Be positioned at a plurality of multiparameter sensing terminals in waters to be measured, after parameter signal rough handlings such as the UVA that collects, temperature, turbidity, pH value, by wireless transmitting system data are carried out wireless transmit, the terminal wireless transceiver module that finally is positioned at monitoring terminal receives, and carries out the data analysis processing of multi-parameter comprehensive at monitoring terminal (specifically in industrial computer).
In the utility model, the multiparameter sensing terminal is meant the integrated comprehensive sensing device that can survey UVA in the waters to be measured, temperature, turbidity, four parameters of pH value at least, comprises the structure and the type of various specific implementations.
Compared with the prior art, the utlity model has following advantage:
1. measuring multiple parameters.The utility model also can obtain other water quality datas such as turbidity, temperature, pH value for your guidance simultaneously except the COD data of measuring waters to be measured.
2. multiparameter is calculated.The utility model adopts the computing method of UVA, temperature, turbidity, four parametric synthesis of pH value, and based on UVA or only compare based on the Traditional calculating methods of UVA and turbidity, the COD data that record have higher precision.
3. wireless remote transmission.The utility model adopts Wireless transmission mode to carry out data transmission, can realize distributed, the remote monitoring in real time to water field of big area.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is the annexation synoptic diagram of the COD water quality monitoring system of multi-parameter comprehensive of the present utility model.
Embodiment
Embodiment 1, Fig. 1 have provided a kind of COD water quality monitoring system of multi-parameter comprehensive, comprise wireless transmitting system 2, be positioned at away from waters to be measured and be positioned at the monitoring terminal 3 of Control Room and the multiparameter sensing terminal 1 that is positioned over waters to be measured of at least one.
Each multiparameter sensing terminal 1 comprises sensing probe 12, A/D modular converter 13, data acquisition module 14, sensor microprocessor 15 and the sensor wireless transceiver module 16 that links to each other with sensor solar panel 11 respectively, is responsible for providing the energy by sensor solar panel 11.Sensing probe 12, A/D modular converter 13, data acquisition module 14, sensor microprocessor 15 and sensor wireless transceiver module 16 link to each other successively, and sensor wireless transceiver module 16 links to each other with sensing probe 12.Sensing probe 12 is made up of these 4 kinds of sensing probes of uv absorption sensing probe, turbidity sensing probe, temperature sensing probe and pH value sensing probe, that is, multiparameter sensing terminal 1 is for being used to gather the sensing terminal of uv absorption, turbidity, temperature, four parameters of pH value.
Wireless transmitting system 2 comprises a GPRS telenet relay station and the ZigBee LAN (Local Area Network) relay station of at least one.
Each ZigBee LAN (Local Area Network) relay station comprises microprocessor I 22, memory I 23 and the radio receiving transmitting module I 24 that links to each other with solar panel I 21 respectively, promptly, solar panel I 21 is responsible for power supplies, thereby makes the whole ZigBee LAN (Local Area Network) relay station can be in the open air from the long-term independent operating of net; Clear for drawing, this annexation has been done to omit in Fig. 1 and has been handled.Memory I 23 links to each other with microprocessor I 22 respectively with radio receiving transmitting module I 24.This ZigBee LAN (Local Area Network) relay station carries out the wireless receiving and dispatching of data by the ZigBee related protocol.
GPRS telenet relay station comprises microprocessor II 26, memory I I 27 and the radio receiving transmitting module II 28 that links to each other with solar panel II 25 respectively, promptly, solar panel II 25 is responsible for power supplies, thereby makes the whole GPRS telenet relay station can be in the open air from the long-term independent operating of net; Clear for drawing, this annexation has been done to omit in Fig. 1 and has been handled.Memory I I 27 links to each other with microprocessor II 26 respectively with radio receiving transmitting module II 28.This GPRS telenet relay station carries out the wireless receiving and dispatching of data by the GPRS agreement.
Each sensor wireless transceiver module 16 all with 24 wireless linking to each other of a radio receiving transmitting module I, each radio receiving transmitting module I 24 all with 28 wireless linking to each other of radio receiving transmitting module II; Radio receiving transmitting module II 28 and 33 wireless linking to each other of terminal wireless transceiver module.
A kind of multi-parameter comprehensive COD water quality monitoring method that utilizes above-mentioned monitoring system to carry out, in industrial computer 32, preserve following information in advance: each parameter sensing terminal 1 pairing numbering, a zone to be measured how many sub regions is made of, the numbering of the parameter sensing terminal 1 that is provided with in each subregion; Carry out following steps then successively:
1, a corresponding GPRS telenet relay station in zone to be measured and a plurality of ZigBee LAN (Local Area Network) relay station.At first, waters to be measured is divided into a plurality of subregions, a ZigBee LAN (Local Area Network) relay station and several multiparameter sensing terminal 1 (can be 255 at most) are set in each subregion according to the coverage of ZigBee LAN (Local Area Network).
2, multiparameter sensing terminal 1 is responsible for these 4 parameters of uv absorption, turbidity, temperature and pH value in monitoring waters to be measured; Specific as follows:
1), sensing probe 12 is positioned over waters to be measured, sensing probe 12 responsible these 4 kinds of data of ultraviolet absorptivity (UVA), turbidity, temperature and pH value of gathering waters to be measured; All attach on the above-mentioned data that each sensing probe 12 sends this multiparameter sensing terminal 1 pairing number value is arranged;
2), sensing probe 12 gives A/D modular converter 13 with above-mentioned 4 kinds of data transfer, A/D modular converter 13 is responsible for these 4 kinds of data are carried out separately analog to digital conversion respectively; That is, convert analog electrical signal to digital signal;
3), data acquisition module 14 is responsible for gathering above-mentioned information, and is passed to sensor microprocessor 15, the above-mentioned information that receives is passed to sensor wireless transceiver module 16 with sensor microprocessor 15 and command sensor radio receiving transmitting module 16 outwards sends.
3, multiparameter sensing terminal 1 passes to monitoring terminal 3 with above-mentioned 4 parameters by wireless transmitting system 2, and is specific as follows:
1), each sensor wireless transceiver module 16 passes to pairing radio receiving transmitting module I 24 in this subregion with above-mentioned information, according to the setting principle of ZigBee LAN (Local Area Network) relay station, the radio receiving transmitting module I 24 in each ZigBee LAN (Local Area Network) relay station receives only the signal that the parameter sensing terminal 1 in this subregion is sent.
Radio receiving transmitting module I 24 passes to microprocessor I 22 with above-mentioned information;
2), microprocessor I 22 is passed to above-mentioned information the storage that memory I 23 is carried out data classification character on the one hand, be specially: the content stores that each parameter sensing terminal 1 monitors (is being set preservation according to the numbering of parameter sensing terminal 1) separately under one's name, thereby the content that each parameter sensing terminal 1 is monitored is preserved respectively.
Microprocessor I 22 is passed to radio receiving transmitting module I 24 with above-mentioned information on the other hand, and the outside wireless transmission of order radio receiving transmitting module I24 is to radio receiving transmitting module II 28;
3), the information that monitors of each multiparameter sensing terminal 1 of all it being received of the radio receiving transmitting module I 24 in each subregion passes to radio receiving transmitting module II 28, radio receiving transmitting module II 28 passes to microprocessor II 26 with above-mentioned information;
4), set the numbering of the pairing parameter sensing terminal 1 of each subregion in the microprocessor II 26 in advance.
Microprocessor II 26 is under one's name pairing with parameter sensing terminal 1 detected content stores each subregion in memory I I 27 of each subregion on the one hand, thereby the content that each subregion is monitored can be preserved respectively.
On the other hand, microprocessor II 26 also passes through radio receiving transmitting module II 28 wireless transmission to terminal wireless transceiver module 33 with above-mentioned information.
4, monitoring terminal 3 carries out following processing with the data that receive:
1), terminal wireless transceiver module 33 passes to industrial computer 32 with the information that receives, industrial computer 32 calculates COD according to following formula:
COD＝aT
2+b
1(A
254-A
546)+b
2pH+b
3T+c (1)
In the formula (1), COD represents the chemical oxygen demand (COD) in waters to be measured, and a is the second order scale-up factor, b
1, b
2, b
3Be the single order scale-up factor, c is a penalty coefficient, and T is a temperature, and pH is the pH value, A
254Be the absorption coefficient of 254nm ultraviolet light, A
546The turbidity that records for absorption coefficient by the 546nm visible light;
A, b in the formula (1)
1, b
2, b
3, c is weighting coefficient, can obtain (this is the routine techniques of the industry) by the method for before use system being demarcated in advance:
(1), obtains the water sample of waters to be measured higher concentration, change the temperature (for example at every turn reduce or increase by 0.1 ℃) of the concentration (for example at every turn diluting one times) of L water sample, M water sample and the pH value of N water sample (for example increase or reduce by 0.01) then successively at every turn, under the situation of each change water sample, utilize the multiparameter sensing terminal to obtain a cover about A
254, A
546, T, pH independent variable numerical value; And utilize standard C OD apparatus measures to obtain corresponding COD standard value simultaneously.Obtain L*M*N (A so altogether
254, A
546, T, pH, COD standard value) array.
(2) with each (A
254, A
546, T, pH, COD standard value) array substitution formula (1), try to achieve O weighting coefficient group (a, b that formula is set up
1, b
2, b
3, c).Obtain L*M*N*O (a, b so altogether
1, b
2, b
3, c) the weighting coefficient group.
(3) with L*M*N*O (a, b
1, b
2, b
3, c) weighting coefficient group respectively substitution formula (1), (A that L*M*N water sample recorded again
254, A
546, T, pH) also substitution formula (1), calculate and can obtain L*M*N*O*L*M*N COD calculated value altogether.With each (a, b
1, b
2, b
3, c) weighting coefficient group L*M*N the COD calculated value of trying to achieve be updated to and try to achieve L*M*N*O correlation coefficient r in the formula (2).
Cod is the COD standard value in formula (2),
Be the mean value of COD standard value, cod ' is the COD calculated value,
Mean value for the COD calculated value.
(4) choose and make and obtain peaked weighting coefficient group (a, b in L*M*N*O the correlation coefficient r
1, b
2, b
3, c) as the weighting coefficient in the formula (1).Calculating under the situation about allowing, also can be by additive method default more (a, b
1, b
2, b
3, c) the weighting coefficient group, and the group number that increases water sample is selected accurate more weighting coefficient, improves measuring accuracy.
With a, the b that obtains
1, b
2, b
3, c numerical value substitution formula (1), thereby obtain a, b
1, b
2, b
3, c is the formula (1) of given value.
Above-mentioned gained be the COD value of each multiparameter sensing terminal 1.
2), industrial computer 32 averages processing with the COD value of the multiparameter sensing terminal 1 in each subregion, thereby obtains the mean value of each subregion to be measured; Industrial computer 32 also averages processing with the COD value of the multiparameter sensing terminal 1 in the zone, thereby obtains the mean value in a zone to be measured.Industrial computer 32 all shows the mean value of above-mentioned each subregion to be measured and the mean value in a zone to be measured at display 31.
Thereby make the user can learn testing result clearly.
3), in industrial computer 32, be provided with the monitoring time interval (can distinguish) of each multiparameter sensing terminal 1 in advance according to multiparameter sensing terminal 1 numbering separately; After the monitoring time of setting arrived, industrial computer 32 just sent work order by terminal wireless transceiver module 33, radio receiving transmitting module II 28, radio receiving transmitting module I 24 and sensor wireless transceiver module 16 to specific multiparameter sensing terminal 1 successively; Thereby controlling corresponding multiparameter sensing terminal 1 detects.After the 1 each detection of multiparameter sensing terminal is finished, just stop automatically detecting.Until receiving that once more the sense command that industrial computer 32 is sent just starts work once more.
In order to prove detection effect of the present utility model, the inventor has carried out following contrast experiment:
Experiment 1, be example with the sewage after the processing of certain paper mill discharging.Every interval was tested in 1 hour in 24 hours, utilize water quality monitoring system of the present utility model respectively, utilize existing water quality monitoring system (mainly considering parameters such as ultraviolet absorptivity) and utilize standard C OD instrument, the correlation data of test (mg/L of unit) as shown in table 1 below.By table 1 as seen, determine substantially and change under the little situation that at the sewage composition accuracy of detection of the present utility model is higher.
Table 1
At last, it is also to be noted that what more than enumerate only is a specific embodiment of the present utility model.Obviously, the utility model is not limited to above embodiment, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.
Claims (3)
1. the COD water quality monitoring system of multi-parameter comprehensive is characterized in that: comprise wireless transmitting system (2), be positioned at away from waters to be measured and be positioned at the monitoring terminal (3) of Control Room and the multiparameter sensing terminal (1) that is positioned over waters to be measured of at least one;
Described each multiparameter sensing terminal (1) all with wireless linking to each other of entrance point of wireless transmitting system (2), the endpiece of described wireless transmitting system (2) and wireless linking to each other of monitoring terminal (3).
2. the COD water quality monitoring system of multi-parameter comprehensive according to claim 1 is characterized in that:
Described each multiparameter sensing terminal (1) comprises sensing probe (12), A/D modular converter (13), data acquisition module (14), sensor microprocessor (15) and the sensor wireless transceiver module (16) that links to each other with sensor solar panel (11) respectively, sensing probe (12), A/D modular converter (13), data acquisition module (14), sensor microprocessor (15) and sensor wireless transceiver module (16) link to each other successively, and sensor wireless transceiver module (16) links to each other with sensing probe (12);
Described wireless transmitting system (2) comprises GPRS telenet relay station and the ZigBee LAN (Local Area Network) relay station of at least one;
Described each ZigBee LAN (Local Area Network) relay station comprises microprocessor I (22), memory I (23) and the radio receiving transmitting module I (24) that links to each other with solar panel I (21) respectively, and described microprocessor I (22) links to each other with memory I (23) with radio receiving transmitting module I (24) respectively;
Described GPRS telenet relay station comprises microprocessor II (26), memory I I (27) and the radio receiving transmitting module II (28) that links to each other with solar panel II (25) respectively, and described microprocessor II (26) links to each other with radio receiving transmitting module II (28) with memory I I (27) respectively;
Described monitoring terminal (3) comprises display (31), industrial computer (32) and terminal wireless transceiver module (33), and described industrial computer (32) links to each other with terminal wireless transceiver module (33) with display (31) respectively;
Each sensor wireless transceiver module (16) and wireless linking to each other of a radio receiving transmitting module I (24), described each radio receiving transmitting module I (24) and wireless linking to each other of radio receiving transmitting module II (28); Radio receiving transmitting module II (28) and wireless linking to each other of terminal wireless transceiver module (33).
3. the COD water quality monitoring system of multi-parameter comprehensive according to claim 2, it is characterized in that: described sensing probe (12) is made up of these 4 kinds of sensing probes of uv absorption sensing probe, turbidity sensing probe, temperature sensing probe and pH value sensing probe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201659535U CN202093016U (en) | 2011-05-23 | 2011-05-23 | Multi-parameter comprehensive COD (Chemical Oxygen Demand) water quality monitoring system |
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| CN2011201659535U CN202093016U (en) | 2011-05-23 | 2011-05-23 | Multi-parameter comprehensive COD (Chemical Oxygen Demand) water quality monitoring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156183A (en) * | 2011-05-23 | 2011-08-17 | 浙江工大盈码科技发展有限公司 | Multi-parameter integrated COD (Chemical Oxygen Demand) water quality monitoring system and monitoring method thereof |
| CN103529185A (en) * | 2012-07-02 | 2014-01-22 | 杭州诺普泰克仪器仪表有限公司 | Intelligent type multi-parameter online water quality analyzer |
| CN103871218A (en) * | 2014-03-10 | 2014-06-18 | 福州大学 | Singlechip-based ocean surface pH value detection and wireless transmission system |
| CN107036651A (en) * | 2017-04-01 | 2017-08-11 | 吉林省水文水资源局白城分局 | A kind of hydrographic water resource detecting system for possessing remote upgrade function |
-
2011
- 2011-05-23 CN CN2011201659535U patent/CN202093016U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156183A (en) * | 2011-05-23 | 2011-08-17 | 浙江工大盈码科技发展有限公司 | Multi-parameter integrated COD (Chemical Oxygen Demand) water quality monitoring system and monitoring method thereof |
| CN102156183B (en) * | 2011-05-23 | 2013-08-07 | 浙江工大盈码科技发展有限公司 | Multi-parameter integrated COD (Chemical Oxygen Demand) water quality monitoring method |
| CN103529185A (en) * | 2012-07-02 | 2014-01-22 | 杭州诺普泰克仪器仪表有限公司 | Intelligent type multi-parameter online water quality analyzer |
| CN103871218A (en) * | 2014-03-10 | 2014-06-18 | 福州大学 | Singlechip-based ocean surface pH value detection and wireless transmission system |
| CN107036651A (en) * | 2017-04-01 | 2017-08-11 | 吉林省水文水资源局白城分局 | A kind of hydrographic water resource detecting system for possessing remote upgrade function |
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