CN102262068A - Wireless network-based intelligent on-line analysis recorder for concentration of phosphate radical - Google Patents
Wireless network-based intelligent on-line analysis recorder for concentration of phosphate radical Download PDFInfo
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- CN102262068A CN102262068A CN2011101084621A CN201110108462A CN102262068A CN 102262068 A CN102262068 A CN 102262068A CN 2011101084621 A CN2011101084621 A CN 2011101084621A CN 201110108462 A CN201110108462 A CN 201110108462A CN 102262068 A CN102262068 A CN 102262068A
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Abstract
The invention discloses a wireless network-based intelligent on-line analysis recorder for the concentration of a phosphate radical. The wireless network-based intelligent on-line analysis recorder comprises a plurality of terminal nodes for measuring the concentration of the phosphate radical and an intelligent monitoring terminal which is in communicated connection with the terminal nodes for measuring the concentration of the phosphate radical and can be used for realizing centralized on-line monitoring on a plurality of paths of water samples. In the process of measuring the concentration of the phosphate radical in the water sample by using the terminal nodes for the concentration of the phosphate radical, liquid level calibration of a standard solution and reagents filled in a reagent bottle and a second reagent bottle by programming a single computer controller of the terminal nodes for measuring the concentration of the phosphate radical through software is realized, thus the detection cost for liquid level is reduced and misoperation caused by detection device failure is eliminated at the same time. The intelligent monitoring terminal can be used for achieving functions of full-automatic measurement, automatic calibration, high-capacity data storage, touch screen control, Chinese-English menu selection and the like, providing a serial communication interface and an Ethenet interface and achieving remote monitoring and the on-line issuing function of measuring information.
Description
Technical field
The present invention relates to a kind of analysis recorder, particularly relate to the intelligent phosphate concentration on-line analysis registering instrument of a kind of employing wireless networking technology and embedded technology.
Background technology
In the fuel-burning power plant, the monitoring of boiler is extremely important, and water is the medium of boiler of power plant work, and therefore, for the requirement of boiler water quality, can will be directly connected to boiler safely, reliable, stable and operation economically.Yet the temperature of water and vapor pressure rise, when descending, can make the salt that carries in the water separate out in the boiler, cause boiler salification and fouling.Therefore, for salification and the fouling that prevents heat power equipment, the corrosion that slows down heat power equipment, the time between overhauls(TBO) and the life-span of prolongation heat power equipment, guarantee the safe operation of unit, must monitor and handle boiler water, steam.Great majority adopt the processing mode that adds phosphate both at home and abroad at present, in boiler water, add suitable phosphate, make and keep a certain amount of phosphate radical in the boiler water, can improve the shock-absorbing capacity of boiler water, keep the stove water ph value, can effectively prevent fouling, the corrosion of boiler water-wall tube.Therefore, the phosphate concentration analyser of measuring phosphate content in boiler sample water, the steam is superintended and directed in the Water of Power Plant quality supervision, there is crucial meaning aspects such as equipment anticorrosion, heat exchanger Leak Detection.
Phosphate concentration measuring principle: according to lambert---Beer law (Lambert-Beer), when a branch of collimated monochromatic ligth vertically during the extinction material by a certain even non-scattering, its absorbance is directly proportional with the concentration and the absorber thickness of extinction material, so in order to measure the concentration of phosphate radical in the solution, adopt chromogenic reaction, be translated into coloured extinction thing,, can calculate phosphatic content by measuring its absorbance.
At present, the phosphate concentration measurement instrument has self diagnosis and reports to the police, adjusts zero point automatically, three kinds of functions such as calibrating mode are provided, but this analyser is very high to the requirement of measurement environment, requiring the pressure of sample water as it is 2～8psi, sample discharge is 100～300mL/min, and environment temperature is 10～45 ℃ etc.This instrument structure complexity is difficult in maintenance in addition, can only realize the single channel measurement, and does not possess the function of data storage.
Application number is that 00254076.2 patented claim discloses " a kind of water sample analysis device of measuring the silicon phosphate radical ".This utility model patent utilizes microprocessor to realize measurement to phosphate concentration, but the function of data storage not, does not also possess the function of network service, and Ethernet interface is not provided.Application number is that the patented claim of 200520018884.X discloses " measuring the water sample analysis device of multiple parameter respectively ".This utility model can be used for the water sample of multiple parameter (as phosphate radical, silicate, ferric ion, copper ion etc.) is carried out functions such as analysis to measure, demonstration, storage, but because of water sample metering system, the controlled device of every kind of parameter has nothing in common with each other, water sample to concrete parameter must be made a concrete analysis of, therefore, this water sample analysis device is unfavorable for promoting, and practicality is not strong.
This shows, inconvenience and defectives such as intellectuality, the networked degree that above-mentioned existing phosphate concentration analyser exists is not high, complex structure, man-machine interface is unfriendly, the hyperchannel instrument measurement cycle is long, and demand urgently further being improved.In order to solve the problem that the phosphate concentration analyser exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing phosphate concentration analyser exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of intelligent phosphate concentration on-line analysis registering instrument of new structure based on wireless network, can improve general existing phosphate concentration analyser, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
Fundamental purpose of the present invention is, overcome the defective that existing phosphate concentration analyser exists, and provide a kind of intelligent phosphate concentration on-line analysis registering instrument of new structure based on wireless network, technical matters to be solved is to make it realize decentralized measure, centralized displaying by wireless network, thereby realize simultaneously multichannel sample water being carried out in real time, accurately measuring, thereby be suitable for practicality more, and have the value on the industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of intelligent phosphate concentration on-line analysis registering instrument based on wireless network according to the present invention proposes is characterized in that: comprise a plurality of phosphate concentration measuring terminals nodes and communicate the intelligent monitoring terminal that connects with described phosphate concentration measuring terminals node.
Aforesaid intelligent phosphate concentration on-line analysis registering instrument based on wireless network, wherein, described phosphate concentration measuring terminals node comprises cuvette, be respectively arranged with infraluminescence device and the infrared light-inductive device that communicates with measurement instrument in the both sides of described cuvette, the bottom of described cuvette connects reagent bottle and first reagent bottle and second reagent bottle that 1～8 mg/litre standard phosphate radical solution is housed, and the bottom inside of described cuvette is provided with stirrer.
Aforesaid intelligent phosphate concentration on-line analysis registering instrument based on wireless network wherein, is provided with the precision liquid medicine volume pump in described described cuvette and the pipeline that first reagent bottle that Mitouer and potassium metabisulfite mixed solution are housed is connected.
Aforesaid intelligent phosphate concentration on-line analysis registering instrument based on wireless network wherein, is provided with the precision liquid medicine volume pump in described cuvette and the pipeline that second reagent bottle that ammonium molybdate, citric acid and sulfuric acid mixed solution are housed is connected.
Aforesaid intelligent phosphate concentration on-line analysis registering instrument based on wireless network, wherein, measurement instrument comprises: single-chip microcomputer and communicate the A/D sampling module that connects, solenoid valve, pump, stirrer control module with described single-chip microcomputer respectively and based on the wireless communication module of ZigBee.
Aforesaid intelligent phosphate concentration on-line analysis registering instrument based on wireless network, wherein, described intelligent monitoring terminal comprises: microprocessor and communicate the wireless communication module based on ZigBee, serial communication interface, Ethernet interface, color touch screen, other external circuits, the outer extension memory that connects with described microprocessor respectively.
By technique scheme, the intelligent phosphate concentration on-line analysis registering instrument that the present invention is based on wireless network has following advantage at least:
Intelligent phosphate concentration on-line analysis registering instrument based on wireless network of the present invention can be connected to a plurality of phosphate concentration measuring terminals nodes, can realize simultaneously multichannel sample water being concentrated on-line monitoring.Phosphate concentration measuring terminals node is carrying out in the measuring process sample water phosphate concentration, by programming realizes titer, is contained in reagent in first reagent bottle and second reagent bottle and carries out the software liquid level and demarcate to the singlechip controller of phosphate concentration measuring terminals node, reduce the Level Detection cost, also eliminated the maloperation that causes because of liquid level detection device is malfunctioning simultaneously.Intelligent monitoring terminal is not only realized functions such as all automatic measurement, demarcation automatically, mass data storage, touch-screen control, Chinese and English menu selection, serial communication interface, Ethernet interface also are provided, can realize the function of the online issue of remote monitoring and metrical information.
In sum, the intelligent phosphate concentration on-line analysis registering instrument based on wireless network of special construction of the present invention is realized decentralized measure, centralized displaying by wireless network, thereby realizes simultaneously multichannel sample water being carried out in real time, accurately measuring.It has above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it structurally or bigger improvement all arranged on the function, have large improvement technically, and produced handy and practical effect, and more existing phosphate concentration analyser has the multinomial effect of enhancement, thus be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the wireless network johning knot composition based on wireless network intelligence hyperchannel phosphate concentration on-line analysis registering instrument;
Fig. 2 is the structural representation of phosphate concentration measuring terminals node;
Fig. 3 is measurement instrument 14 schematic diagrams;
Fig. 4 is measurement instrument 14 circuit diagrams;
Fig. 5 is the intelligent monitoring terminal schematic diagram.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to intelligent its embodiment of phosphate concentration on-line analysis registering instrument, structure, feature and the effect thereof that foundation the present invention proposes based on wireless network, describe in detail as after.
See also Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, a kind of intelligent phosphate concentration on-line analysis registering instrument based on wireless network of preferred embodiment of the present invention comprises a plurality of phosphate concentration measuring terminals nodes and communicates the intelligent monitoring terminal that connects with described phosphate concentration measuring terminals node.Phosphate concentration measuring terminals node comprises cuvette, be respectively arranged with infraluminescence device and the infrared light-inductive device that communicates with measurement instrument in the both sides of cuvette, the bottom of cuvette connects reagent bottle and first reagent bottle and second reagent bottle that 1～8 mg/litre standard phosphate radical solution is housed, and the bottom inside of described cuvette is provided with stirrer.Be provided with the precision liquid medicine volume pump in cuvette and the pipeline that first reagent bottle that Mitouer and potassium metabisulfite mixed solution are housed is connected.Be provided with the precision liquid medicine volume pump in cuvette and the pipeline that second reagent bottle that ammonium molybdate, citric acid and sulfuric acid mixed solution are housed is connected.
As shown in Figure 3, measurement instrument comprises: single-chip microcomputer and communicate the A/D sampling module that connects, solenoid valve, pump, stirrer control module with described single-chip microcomputer respectively and based on the wireless communication module of ZigBee.Single-chip microcomputer by basic input output port realize solenoid valve, pump, stirrer etc. are controlled in real time; Realize the A/D signal is carried out sampling analysis by 16 built-in A/D converters; Be connected with the radio receiving transmitting module that adopts the CC2420 chip by the SPI interface, realize radio communication with intelligent monitoring terminal.
As shown in Figure 4, U1 is a single-chip microcomputer 21, is responsible for instrument measurement and control, and U2 is the CC2420 chip, is responsible for Zigbee communication; U3 is amplifier LM358, and being responsible for provides pumping signal to infrared LED 10; U4 is amplifier OP07, is responsible for amplifying the signal of infrared receiving sensor 11, and is connected to the AD sample port of single-chip microcomputer 21; JDQ1 is a relay, is responsible for driving external electric magnet valve etc.Concrete circuit connecting relation of the present invention is: the 44-47 pin of U1 is the SPI mouth of single-chip microcomputer 21, the SPI mouth of U1 and the SPI interface of U2 (31-34 pin) link to each other respectively, carry out the transmission of data, the 11st, 61,59,49,48,60 pin of U1 also are connected successively with the 21st, 41,27,28,29,30 pin of U2, control its data transmission and duty; 7,8,9 pin of U2 link to each other with dipole antenna by impedance matching circuit.8 and 9 pin of U1 meet clock crystal oscillator 8MHZ; 53 pin of U1 link to each other with optocoupler OIS1, change by the level of controlling 53 pin, thereby the state of pilot relay JDQ1 are realized the switch to outside solenoid valve etc.; Amplifier U4 is by carrying out filtering, be connected with the 2nd pin of U1 after amplifying to photosignal, thereby realizes that the A/D converter that the analog voltage signal that amplification obtains is transferred to U1 carries out the A/D conversion.
As shown in Figure 5, intelligent monitoring terminal comprises: microprocessor 22 and communicate the wireless communication module 23 based on ZigBee that connects, serial communication interface 24, Ethernet interface 25, color touch screen 26, other peripheral circuits 27, outer extension memory 28 with described microprocessor respectively.The employed operating system of intelligent monitoring terminal is the Windows CE operating system based on ARM11, is embedded with database in this operating system, can realize the phosphate concentration related data that measures is carried out real-time preservation.The annexation of each module of intelligent monitoring terminal is: adopt the wireless communication module 23 of the ZigBee that the radio frequency chip by CC2420 constitutes to link to each other with the SPI interface of ARM11 microprocessor 22, adopt the SPI communication mode to realize the control and the data transmit-receive of the wireless communication module 23 of 22 couples of ZigBee of ARM11 microprocessor, make up cordless communication network, thereby realized intelligent monitoring terminal and a plurality of phosphate concentration measuring terminals node radio communication; Memory capacity is the outer extension memory 28 of the Flash storer of 64M as ARM11 microprocessor 22.What serial communication interface 24 adopted is RS232 serial communication pattern, follows Modbus field bus communication agreement; This intelligent monitoring terminal is realized the phosphate concentration of multichannel sample water is concentrated demonstration in real time and control by color touch screen 26, also provides Chinese and English menu to select in addition, and convenient common employee operates; ARM11 microprocessor 22 is by being connected with ethernet control chip DM9000A, follow 802.3 Ethernet host-host protocols of IEEE promulgation, realized the Ethernet interface 25 of standard, and internal system is embedded with remote monitoring server end under the C/S model and the Web server under the B/S pattern, can realize client/service (Client/Server, be called for short C/S) pattern and browser/server (Browser/Server, be called for short B/S) two kinds of remote monitoring patterns of pattern, satisfied the informationalized demand of power plant.
The course of work based on wireless network intelligence hyperchannel phosphate concentration on-line analysis registering instrument of the present invention is:
One, measuring process:
Under the measurement state, liquid-way system is finished flushing, sample introduction successively, is added reagent and blowdown four measuring flow process.All parts original states are introduced the concrete measuring process of liquid-way system below all for closing.
(1) flushing:
The 0th second, sample water control valve 3 was opened after 10 seconds and is closed, and enough allows sample water fill with cuvette 6 during this period of time, and unnecessary sample water overflows cuvette 6 by surplus valve 9.Stirrer 16 opens after 5 seconds and cuts out simultaneously, and this process is with treating test sample water flushing cuvette 6, being used to prevent last time from measuring waste liquid this measurement is caused interference.Blowoff valve 14 opens after 5 seconds and cuts out afterwards, and the liquid after the flushing is discharged.So repeat to wash three times.
(2) sample introduction:
The 45th second, sample water control valve 3 was opened after 10 seconds and is closed, and was used for treating test sample water introducing cuvette 6.Stirrer 16 opens after 10 seconds and cuts out simultaneously, and sample water is evenly distributed in cuvette 6.Subsequently, measurement instrument 17 is opened infrared LED, carry out the AD sampling analysis, get mean value in 2 seconds (because, judging by the size of AD sampled value whether sample water has filled with cuvette 6) carrying out the AD value that obtains of sampling under sample water and two kinds of situations of no sample water and differ greatly to having.If sample water is filled with cuvette 6, then allow sample water in cuvette 6, leave standstill simultaneously 5 seconds; Otherwise repeat the step of sample introduction.
(3) add reagent:
The 60th second, precision liquid medicine volume pump 7 was opened after 3 seconds and is closed, with a certain amount of reagent R1(12) suction cuvette 6, make it and sample water generation chemical reaction.Stirrer 16 opens after 30 seconds and cuts out simultaneously, makes reaction fully to carry out.Reagent R1(12) slower with the reaction of sample water, need to wait for the long period (6 minutes and 20 seconds).The 7th minute 50 seconds, precision liquid medicine volume pump 5 was opened after 3 seconds and is closed, and stirrer 16 opens after 30 seconds and cuts out simultaneously.After liquid left standstill 20 seconds in the cuvette 6, the 8th minute 40 seconds, measurement instrument 17 was opened infrared LED, carries out the AD sampling analysis, gets the mean value in 10 seconds.
(4) blowdown:
The 8th minute 50 seconds, blowoff valve 14 opened after 10 seconds and cuts out, and the waste liquid after this is measured is discharged.To 9 minutes and 0 second, a complete measurement flow process finished.
Two, calibration process:
The calibration process that the phosphate radical analyser is complete can be divided into Zero calibration and slope is demarcated, and work schedule is as follows separately:
(1) Zero calibration:
At first carry out two steps of flushing, sample introduction of above-mentioned measuring process, the 60th second, measurement instrument 17 was opened infrared LED, carried out the AD sampling, got the mean value in 5 seconds.Because sample water is clear, colorless generally speaking, do not add reagent directly to its sampling, it can be regarded as phosphate content and be 0 sample water, so above-mentioned sample mean can be used as the zero point of calculating phosphate concentration.After sampling is finished, analyze valve 6 unlatchings and close after 5 seconds, blowoff valve 14 opens after 5 seconds and cuts out simultaneously, makes that the sample water in the instrument is all discharged.
(2) slope is demarcated:
After Zero calibration is finished, and then carry out slope and demarcate.The 1st minute 10 seconds, conventional pump 4 was opened after 10 seconds and is closed, and stirrer 16 opens after 10 seconds and cuts out simultaneously, and blowoff valve 14 opens after 5 seconds and cuts out afterwards, and said process is to utilize calibration solution R3 flushing cuvette 6.Repeat such flushing process afterwards again twice, can get rid of the interference of the residual liquid of sample water substantially.The 1st minute 55 seconds, conventional pump 4, stirrer 16 were opened simultaneously after 10 seconds and are closed, and with a certain amount of calibration solution R3 suction cuvette 9, and made its even distribution.Calibration solution R3 left standstill in cuvette 95 seconds, measurement instrument 17 is opened infrared LED 10 simultaneously, and carry out the AD sampling, get the mean value in 2 seconds, thereby judge whether calibration solution fills with cuvette 6, the 2nd minute 10 seconds, precision liquid medicine volume pump 7 is opened after 3 seconds and is closed, and stirrer 16 opens after 30 seconds and cuts out simultaneously, waits for afterwards to the 9th minute and 0 second, precision liquid medicine volume pump 5 is opened after 3 seconds and is closed, and stirrer 16 opens after 30 seconds and cuts out simultaneously.After liquid left standstill 20 seconds, the 9th minute 50 seconds, measurement instrument 17 was opened infrared LED and is carried out the AD sampling, gets the mean value in 10 seconds, through corresponding calculating, can draw slope value.The 10th minute 0 second, blowoff valve 14 opened after 10 seconds and cuts out, and waste liquid is discharged, and so far slope is demarcated and finished.
The technological innovation of the intelligent phosphate concentration on-line analysis registering instrument that the present invention is based on wireless network that said structure constitutes all has many saving graces for technician of the same trade now, and the progressive that possesses skills really.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (6)
1. the intelligent phosphate concentration on-line analysis registering instrument based on wireless network is characterized in that: comprise a plurality of phosphate concentration measuring terminals nodes and communicate the intelligent monitoring terminal that connects with described phosphate concentration measuring terminals node.
2. the intelligent phosphate concentration on-line analysis registering instrument based on wireless network according to claim 1, it is characterized in that: described phosphate concentration measuring terminals node comprises cuvette, be respectively arranged with infraluminescence device and the infrared light-inductive device that communicates with measurement instrument in the both sides of described cuvette, the bottom of described cuvette connects reagent bottle and first reagent bottle and second reagent bottle that 1～8 mg/litre standard phosphate radical solution is housed, and the bottom inside of described cuvette is provided with stirrer.
3. the intelligent phosphate concentration on-line analysis registering instrument based on wireless network according to claim 2 is characterized in that: be provided with the precision liquid medicine volume pump in described cuvette and the pipeline that first reagent bottle that Mitouer and potassium metabisulfite mixed solution are housed is connected.
4. the intelligent phosphate concentration on-line analysis registering instrument based on wireless network according to claim 2 is characterized in that: be provided with the precision liquid medicine volume pump in described cuvette and the pipeline that second reagent bottle that ammonium molybdate, citric acid and sulfuric acid mixed solution are housed is connected.
5. the intelligent phosphate concentration on-line analysis registering instrument based on wireless network according to claim 2, it is characterized in that: described measurement instrument comprises: single-chip microcomputer and communicate the A/D sampling module that connects, solenoid valve, pump, stirrer control module with described single-chip microcomputer respectively and based on the wireless communication module of ZigBee.
6. the intelligent phosphate concentration on-line analysis registering instrument based on wireless network according to claim 2, it is characterized in that: described intelligent monitoring terminal comprises: microprocessor and communicate the wireless communication module based on ZigBee, serial communication interface, Ethernet interface, color touch screen, other external circuits, the outer extension memory that connects with described microprocessor respectively.
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| CN103338199A (en) * | 2013-06-25 | 2013-10-02 | 西安电子科技大学 | Portable Modbus bus recorder |
| CN106841182A (en) * | 2016-12-29 | 2017-06-13 | 核工业北京化工冶金研究院 | Simultaneously and rapidly monitor the on-line computing model and method of silicate and phosphate radical in water |
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Application publication date: 20111130 |