CN101699299B - Computer automated measurement method of solid oxide fuel cell (SOFC) electroconductance - Google Patents
Computer automated measurement method of solid oxide fuel cell (SOFC) electroconductance Download PDFInfo
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Abstract
The invention provides a computer automated measurement method of solid oxide fuel cell (SOFC) electroconductance, belonging to the technical field of chemical energy materal performance test, which is characterized by realizing parameter measurement selective setup of a programmable parameter table and dividing parameters in the programmable parameter table into two categories of measurement parameters and selective measurement parameters, namely whether the selective measurement parameters need to be measured can be selected; realizing multiple selection methods of measurement parameter download function for storing data in a database and field equipment; and realizing random-length seamless continual temperature programming process in a temperature increasing stage and adopting a method for downloading the temperature increasing stage in a recursive partitioning manner to solve the problem of extending the length of the temperature increasing stage limited by field temperature controller to cause the temperature increasing process to be in seamless and continual operation. The realization of the method changes the traditional manual measurement method, extends and enhances the self functions of the temperature controller, and leads the measurement system to have flexible operation efficiency, higher cost performance and high precision and efficiency of automatic measurement of the SOFC electroconductance.
Description
Technical field
The present invention relates to a kind of method for measuring conductance, the computer automatic analysis method of particularly a kind of SOFC (SOFC) electrode conductance.
Background technology
Middle high temperature SOFC prepares in the process, and the electrode conductance size under the different temperatures is very big to the SOFC performance impact of preparation.Mostly tested electrode material is semiconductor, and electricity is led with temperature variation less.The tradition conductance measurement adopts instrument detecting under the normal temperature more, manual operation, and the metering system that artificial poll record data on duty etc. fall behind, operation of equipment is frequent, and the record data accuracy is difficult to hold, and conventional efficient is low; Patented claim: a kind of four electrode method electric conductivity test device of virtual instrument control, (application number: 200810106138; The applicant: Beijing University of Technology), this patented claim only is applicable to the conductivity measurement under the room temperature condition.Therefore, develop and develop new SOFC electrode conductance measuring method, the accurate electric conductivity value of potential electrode material under different temperatures has a very important role to the performance study of SOFC.
Summary of the invention
In order to overcome the above problems, the invention provides a kind of computer automatic analysis method of SOFC electrode conductance, be applicable to accurate measurement and process observation thereof that different temperatures bottom electrode electricity is led.This method is through being provided with temperature and electrode current in the micro-reactor, and the potential electrode voltage obtains the electric conductivity value of electrode under different temperatures.
Technical scheme of the present invention:
Electrode to be measured is placed reactor, and reactor places micro-reactor.Through the temperature in the temperature controller control micro-reactor, temperature measuring set is measured the temperature in the reactor, and the current source table provides electric current for electrode to be measured, and voltage table is measured electrode voltage to be measured.Instrument is linked to each other with host computer, and write measuring system, realize real-time setting and measurement field device parameters at host computer.Concrete steps are following:
(1) measuring table of the present invention be with host computer as core, constitute a measuring system by micro-reactor, reactor, voltage table, current source table, temperature controller and temperature measurer.Electrode to be measured is placed reactor, and reactor places in the micro-reactor, and the current source table links to each other with electrode to be measured through two probes respectively with voltage table.The current source table is connected with the GPIB control card of host computer through GPIB (general purpose interface bus) cable with voltage table.The thermopair of temperature controller and temperature measurer places micro-reactor and inside reactor respectively.Temperature controller links to each other with 232 serial ports of computing machine through the RS232-485 module with temperature measurer.The temperature value of host computer drive ports collection site current source table current value, voltage table magnitude of voltage, temperature controller and temperature measurer is realized the automatic measurement of high-accuracy high-efficiency rate SOFC electrode conductance.
(2) carry out conventional setting the such as electric current, sampling time after, by following three kinds of modes the programmable parameter form is set, operating measurement system then, realize the processing of measurement parameter and show in real time:
1) the present invention is implemented in the programmable parameter table one group of parameter is implemented to measure selectable setting; Parameter in the programmable parameter table is divided into two types of measurement parameter and optional measurement parameters, and wherein optional measurement parameter has the selection of whether measuring characteristics is set.
2) the present invention realizes that the measurement parameter download function preserves the multiple selection method of data, and a kind of is that parameter is sent to simultaneously that database is preserved and download is transferred in the field apparatus and preserves, and another kind is that parameter is only downloaded preservation, preserves and be not sent to database.
3) the present invention realizes the seamless continuous temperature programme process of the section of intensification random length; In order to satisfy the continuous temperature requirements of the section random length that heats up; The method that adopts the subregion circulation to download the section that heats up solves and prolongs the intensification segment length (temperature controller intensification segment length is 30 sections to the maximum) that on-the-spot temperature controller limits, and makes the omnidistance operation of temperature-rise period seamless continuously.
The invention has the beneficial effects as follows; In the measurement of SOFC electrode electricity conductance, the parameter setting operation is flexible, provides parameter can measure the selection set-up mode; Can satisfy being provided with of different measuring parameter requirement of multiple test condition and select to help preferably having effective information, improve the reusability of software product; The multiple mode that data are preserved has been optimized data transmission efficiency; Have the intensification segment length and prolong flexibly and seamless continuous operation, make the limited temperature controller of condition self control function be able to extend and strengthen, the temperature control device cost performance is improved, economic benefit promotes thereupon; Great advantage of the present invention is to have transformed the SOFC electrode conductance to measure the traditional experiment research means, improves efficiency of measurement and measuring accuracy greatly.
Description of drawings
The on-the-spot synoptic diagram that connects of Fig. 1 measuring system.
Fig. 2 parameter is provided with the download process flow diagram.
Fig. 3 section of intensification random length process flow diagram that heats up continuously.
Embodiment
Be described in detail the specific embodiment of the invention below in conjunction with technical scheme and accompanying drawing.
Embodiment 1: realize the selectable setting of programmable parameter table parameter measurement
Same group of SOFC electrode conductance parameter, under the different temperature environment, the calculated value that electricity is led is different.In order to measure SOFC electrode conductance δ automatically; Need SOFC electrode in the micro-reactor in the temperature programme process; Under the electrode current specified criteria; Obtain the temperature environment parameter and lead correlation parameter with the calculating electricity, wherein the temperature environment parameter comprises micro-reactor section temperature T d and temperature of reactor Tf, and electricity is led correlation parameter and comprised micro-reactor cavity voltage E and SOFC electrode voltage U.The programmable parameter table is divided into two types of measurement parameter and optional measurement parameters with these measurement parameters, and wherein, Td and Tf are used for being presented in real time the tables of data at computer monitoring interface, belong to measurement parameter; Whether E and U are optional measurement parameter, can select to show.In the program, the definition measurement parameter is the shaping variable, and can select measurement parameter is the logic deformation quantity; And the check box of whether measuring is provided; Different operating is composed to the different logical value, through the value of decision logic variable, reaches the whether demonstration that correspondence can be selected measurement parameter.
Embodiment 2: the multiple selection method of realizing measurement parameter download function preservation data
Acquiescence is loaded into history parameters table in the database of last downloaded in internal memory and the active sheet.Can create new blank form and carry out the parameter setting, or select " opening ", the history parameters table in the loading of databases is in current internal memory.After parameter is provided with completion, select " download ", based on parameter updating mark variable (m_bDataChangeFlag), whether the query argument table has data variation at every turn, and divides dual mode to download.A kind of is that parameter is sent to simultaneously that database is preserved and download is transferred in the field apparatus and preserves, and another kind is that parameter is only downloaded preservation, preserves and be not sent to database.If detect to data newly are set, preserve by first kind of mode, the programmable parameter form is submitted to be saved in the corresponding new data table of database Access (as 20091031000), the intensification parameter downloads is preserved in the register of on-the-spot temperature controller.Otherwise, preserve parameter by the second way.Particular flow sheet is as shown in Figure 2.
Embodiment 3: the seamless continuous temperature programme process of section random length realizes heating up
It is 30 sections that the temperature controller of existing support compunication can provide the maximum section that heats up; Each section that heats up has comprised section temperature T and two parameters of time period C; In order to satisfy the continuous temperature requirements of the section random length that heats up; Key is " breakpoint " phenomenon on the possibility time of occurrence when solving operation download parameter, and is continuous to guarantee downloading parameter " seamless " in time.The present invention is for the temperature programme greater than 30 sections (it is 100 sections that maximal value length is provided); Regional as a complete intensification in the program with the length of 30 sections that heat up in the temperature controller; Be divided into two traffic coverages on this basis; Each traffic coverage is 15 sections that heat up, and downloads the zone as one.Measure the operation area according to circulation and whether finish to judge whether that needs download the intensification section of next operation area, successively with all traffic coverage parameter downloads in the temperature controller register, accomplish the continuous process that all heat up.After the temperature controller register is downloaded full 30 sections parameters, still have parameter to be downloaded, need the 30th period time period of register put-1, be used to jump to first section parameter of temperature controller and continue to carry out, and adjust the initial intensification section of next traffic coverage to be downloaded.In addition; Before each downloading-running interval parameter; Need and to compare according to intensification parameter list total required traffic coverage number that obtains and the interval number of having moved; Judge whether all sections that heat up have all downloaded completion, then only send the temperature acquisition instruction if accomplish, and download flow process otherwise continue execution parameter; Also need obtain the total intensification of the operation hop count of temperature controller in real time, and, download different traffic coverage parameters to be downloaded according to different intensification hop counts; During the downloading-running interval parameter, need to judge whether this traffic coverage parameter is downloaded, to avoid the repeated downloads of parameter.Particular flow sheet is as shown in Figure 3.
Claims (1)
1. the computer automatic analysis method of a SOFC electrode conductance is characterized in that following steps:
(1) measuring table be with host computer as core, constitute a measuring system by micro-reactor, reactor, voltage table, current source table, temperature controller and temperature measurer; Electrode to be measured is placed reactor, and reactor places in the micro-reactor, and the current source table links to each other with electrode to be measured through two probes respectively with voltage table; The current source table is connected with the GPIB control card of host computer through the GPIB cable with voltage table; The thermopair of temperature controller and temperature measurer places micro-reactor and inside reactor respectively; Temperature controller links to each other with 232 serial ports of computing machine through the RS232-485 module with temperature measurer; The temperature value of host computer drive ports collection site current source table current value, voltage table magnitude of voltage, temperature controller and temperature measurer;
(2) after conventional parameter is set, the programmable parameter form is set by following three kinds of modes, operating measurement system then, realize the processing of measurement parameter and show in real time:
1) realize the selectable setting of programmable parameter table parameter measurement: the temperature environment parameter comprises micro-reactor section temperature T d and temperature of reactor Tf, and electricity is led correlation parameter and comprised micro-reactor cavity voltage E and SOFC electrode voltage U; The programmable parameter table is divided into two types of measurement parameter and optional measurement parameters with these measurement parameters, and wherein, Td and Tf are used for being presented in real time the tables of data at computer monitoring interface, belong to measurement parameter; Whether E and U are optional measurement parameter, can select to show; In the program, the definition measurement parameter is the shaping variable, and can select measurement parameter is the logic deformation quantity, and different operating is composed to the different logical value, through the value of decision logic variable, reaches the whether demonstration that correspondence can be selected measurement parameter;
2) realization measurement parameter download function is preserved the multiple selection method of data: parameter is selected " download " after being provided with and confirming to accomplish; Preserve parameter in the program and adopt dual mode: a kind of is that parameter is sent to simultaneously that database is preserved and download is transferred in the field apparatus and preserves; Another kind is that parameter is only downloaded preservation, does not preserve and be not sent to database; If detect to data newly are set, preserve by first kind of mode, the programmable parameter form is submitted to be saved in the corresponding new data table of database Access, the intensification parameter downloads is preserved in the register of on-the-spot temperature controller; If select " opening ", expression optional database history parameters table as current internal memory programmable parameter table, is selected then to preserve parameter by the second way after " download "; Which kind of situation no matter, program when downloading parameter list, all will pass through a updating mark variable m_bDataChangeFlag each, and whether the query argument table has data variation, presses specific mode preservation parameter then;
3) realize the seamless continuous temperature programme process of section random length that heats up: the existing temperature controller of compunication of supporting provides maximum 30 sections intensification section, and each section that heats up has comprised section temperature T and two parameters of time period C; It is 100 sections that the present invention provides maximal value intensification segment length; Temperature programme greater than 30 sections; Regional as a complete intensification in the program with the length of 30 sections that heat up in the temperature controller; Be divided into two traffic coverages on this basis, each traffic coverage is 15 sections that heat up, and downloads the zone as one; Measure the operation area according to circulation and whether finish to judge whether that needs download the intensification section of next operation area; During traffic coverage of every completion, the intensification section parameter downloads of from temperature section parameter to be downloaded, choosing next operation area is in the operation area of the previous end of temperature controller register; After this traffic coverage of every completion then repeats a step, downloads in the temperature controller register until the intensification Duan Jun that all are to be downloaded, promptly accomplishes the continuous operational process of whole intensifications to this.
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| CN103176024A (en) * | 2011-12-21 | 2013-06-26 | 中兴通讯股份有限公司 | Method and system for utilizing source meter to conduct measurement |
| CN110650384B (en) * | 2019-09-23 | 2022-04-19 | 宁波三星医疗电气股份有限公司 | 485 module communication test method, 485 module, base meter and module terminal |
Citations (4)
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| US5404106A (en) * | 1993-05-26 | 1995-04-04 | Fuji Jukogyo Kabushiki Kaisha | Battery capacity estimating system and method |
| CN1564012A (en) * | 2004-04-14 | 2005-01-12 | 哈尔滨工业大学 | Portable auto detection system for solid oxide fuel cell |
| CN1928580A (en) * | 2005-09-09 | 2007-03-14 | 思柏科技股份有限公司 | Electric power sensing method for fuel cell and its application |
| CN101373208A (en) * | 2007-08-24 | 2009-02-25 | 同济大学 | Fuel cell tester |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5404106A (en) * | 1993-05-26 | 1995-04-04 | Fuji Jukogyo Kabushiki Kaisha | Battery capacity estimating system and method |
| CN1564012A (en) * | 2004-04-14 | 2005-01-12 | 哈尔滨工业大学 | Portable auto detection system for solid oxide fuel cell |
| CN1928580A (en) * | 2005-09-09 | 2007-03-14 | 思柏科技股份有限公司 | Electric power sensing method for fuel cell and its application |
| CN101373208A (en) * | 2007-08-24 | 2009-02-25 | 同济大学 | Fuel cell tester |
Non-Patent Citations (1)
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| 沈胜强等.Ni-YSZ|YSZ|LSM固体氧化物燃料电池性能测试.《热科学与技术》.2003,第2卷(第1期),59－62. * |
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