CN105222866A - A kind of condenser type intelligent boiler liquid level of steam drum meter - Google Patents
A kind of condenser type intelligent boiler liquid level of steam drum meter Download PDFInfo
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- CN105222866A CN105222866A CN201510581250.3A CN201510581250A CN105222866A CN 105222866 A CN105222866 A CN 105222866A CN 201510581250 A CN201510581250 A CN 201510581250A CN 105222866 A CN105222866 A CN 105222866A
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Abstract
The embodiment of the invention discloses a kind of condenser type intelligent boiler liquid level of steam drum meter, relate to boiler accessories equipment technical field.Inventive embodiments comprises: processor, metal cylinder, be arranged on transmitter above described metal cylinder, be arranged on the vapour condensation device inside described metal cylinder, the insulation tube be arranged in described vapour condensation device, the bluetooth module that is connected with processor.It solves in prior art by iterative algorithm, because environmental parameter change causes measurement result to offset, makes the coarse technical matters of measurement result, it can the change of capacitance that causes of sense ambient temperature and medium parameters, and synchronous correction is when the result of pre-test, makes up and reduce because parameter changes the measurement liquid level skew caused.
Description
Technical field
The present invention relates to boiler accessories equipment technical field, particularly relate to a kind of condenser type intelligent boiler liquid level of steam drum meter.
Background technology
Capacitance level gauge is according to capacitance induction principle, when the height change of potential electrode is drawn in measured medium leaching, causes its capacitance variations.It can convert the change of various thing position, liquid level medium level to standard current signal, and teletransmission is carried out centralized displaying, warning to operation pulpit for secondary instrument or computer installation or automatically controls.Concrete principle comprises: inserted by metal bar in liquid container, and metal bar is as a pole of electric capacity, and chamber wall is as another pole of electric capacity.Two interelectrode media are liquid and gas above thereof.Because the DIELECTRIC CONSTANT ε 2 in the DIELECTRIC CONSTANT ε 1 of liquid and liquid level is different, such as: ε 1> ε 2, then when liquid level raises, dielectric constant values total between capacitance level gauge two electrode strengthens thus electric capacity increase thereupon.Otherwise when liquid level declines, ε value reduces, and electric capacity also reduces.So capacitance level gauge measures the height of liquid level by the change of two interelectrode electric capacitys.The sensitivity of capacitance liquid level meter depends primarily on the difference of two kinds of specific inductive capacity, and, only have the constant guarantee level gauging of ε 1 and ε 2 accurate, because measured medium has electric conductivity, so metal bar electrode has insulation course to cover.Capacitance liquid level meter volume is little, easily realizes teletransmission and adjustment, is applicable to the level gauging of the medium with corrosivity and high pressure.
Present capacitance level gauge is this single parameter of capacitance variations between potential electrode mostly.In actual application, we can be very easy to find, markers of dispatching from the factory zero point of reserving and working to the last minute, after being installed to measure field, and zero point and the offset variation that there occurs more or less of working to the last minute.This is because environment parameter there occurs change between the two, or because environment temperature there occurs change; Or because medium temperature there occurs change; Or also because the density of medium, pressure etc. change the specific inductive capacity caused and there occurs change.The change of these all environment parameters all can cause measurement result to offset.
Summary of the invention
For the problems referred to above, the embodiment of the present invention provides a kind of condenser type intelligent boiler liquid level of steam drum meter, is intended to solve in prior art, because environmental parameter change causes measurement result to offset, makes the coarse technical matters of measurement result.
For achieving the above object, embodiments provide a kind of condenser type intelligent boiler liquid level of steam drum meter, comprising: processor, metal cylinder, be arranged on transmitter above described metal cylinder, be arranged on the vapour condensation device inside described metal cylinder, the insulation tube be arranged in described vapour condensation device, the bluetooth module that is connected with processor; Described processor runs the iterative algorithm preset and at least one the temperature spot data collected is carried out cumulative analysis, builds ordered series of numbers, carries out real-Time Compensation, to correct the linearity to liquid level; The side of described metal cylinder is provided with the upper side pipe and lower side pipe that are connected with the lateral steam tube of drum and water side pipe, and bottom is provided with sewage draining exit; Be provided with at least two segment electrodes in described insulation tube, mutually isolated between described electrode, described electrode is connected with transmitter by wire; Described bluetooth module is connected with processor by wire; Described bluetooth module is connected with transmitter by wire.
Further, described bluetooth module is used for, and after the instruction receiving Bluetooth handheld device or the intelligent terminal transmission of erecting equipment client software, performs at least one function in the preservation of the optimum configurations of transmitter, data query and information.
Further, described transmitter comprises micro-control unit MCU, power supply, buffer circuit, input circuit, temperature-compensation circuit, COMM, display DISPLAY circuit, metering circuit and current output circuit.
Further, described processor operation iterative algorithm specifically comprises determines iteration variable, sets up iterative relation, controls iterative process.
Further, the described control to iterative process comprises: after determining iterations, and the circulation of a structure fixed number of times realizes the control to iterative process; Or, when iterations cannot be determined, analyze the condition of finishing iteration process of being used for.
Further, five segment electrodes are provided with in described insulation tube.
Further, described five segment electrodes are respectively the first electrode, the second electrode, the 3rd electrode, the 4th electrode, the 5th electrode; Described first electrode is arranged on the top of described upper side tubular axis line, described 5th electrode is arranged on the below of described lower side tubular axis line, and described second electrode, described 3rd electrode, described 4th electrode are successively set between described upper side tubular axis line and lower side tubular axis line.
Compared with prior art, the embodiment of the present invention solves in prior art by iterative algorithm, because environmental parameter change causes measurement result to offset, makes the coarse technical matters of measurement result, it can the change of capacitance that causes of sense ambient temperature and medium parameters, and synchronous correction is when the result of pre-test, makes up and reduce because parameter changes the measurement liquid level skew caused.Further, setting up by bluetooth module, greatly reduces the complexity that signal is mutual, improves manipulation efficiency, more meets the universal of modern industry thing connection technology.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of condenser type intelligent boiler liquid level of steam drum meter of the embodiment of the present invention;
Fig. 2 A-2I is the electrical block diagram of a kind of transmitter of the embodiment of the present invention;
Fig. 2 A is the MCU electrical block diagram of the embodiment of the present invention;
Fig. 2 B is the COMM electrical block diagram of the embodiment of the present invention;
Fig. 2 C is the DISPLAY electrical block diagram of the embodiment of the present invention;
Fig. 2 D is the temperature-compensation circuit structural representation of the embodiment of the present invention;
Fig. 2 E is the metering circuit structural representation of the embodiment of the present invention;
Fig. 2 F is the circuit construction of electric power schematic diagram of the embodiment of the present invention;
Fig. 2 G is the buffer circuit structure schematic diagram of the embodiment of the present invention;
Fig. 2 H is the input circuit structural representation of the embodiment of the present invention;
Fig. 2 I is the current output circuit structural representation of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described further.
For achieving the above object, a kind of condenser type intelligent boiler liquid level of steam drum meter is embodiments provided.Refer to Fig. 1, Fig. 1 is the structural representation of a kind of condenser type intelligent boiler liquid level of steam drum meter of the embodiment of the present invention.Comprise: processor 10, metal cylinder 20, be arranged on transmitter 30 above described metal cylinder, be arranged on the vapour condensation device 40 inside described metal cylinder, the insulation tube 50 be arranged in described vapour condensation device, the bluetooth module 60 that is connected with processor; Described processor 10 runs the iterative algorithm preset and at least one the temperature spot data collected is carried out cumulative analysis, builds ordered series of numbers, carries out real-Time Compensation, to correct the linearity to liquid level; The side of described metal cylinder is provided with the upper side pipe 21 and lower side pipe 22 that are connected with the lateral steam tube of drum and water side pipe, and bottom is provided with sewage draining exit 23; Be provided with at least two segment electrodes 70 in described insulation tube 50, mutually isolated between described electrode, described electrode 70 is connected with transmitter 30 by wire; Described bluetooth module 60 is connected with processor 10 by wire; Described bluetooth module 60 is connected with transmitter 30 by wire.
Compared with prior art, the embodiment of the present invention solves in prior art by iterative algorithm, because environmental parameter change causes measurement result to offset, makes the coarse technical matters of measurement result, it can the change of capacitance that causes of sense ambient temperature and medium parameters, and synchronous correction is when the result of pre-test, makes up and reduce because parameter changes the measurement liquid level skew caused.Further, setting up by bluetooth module, greatly reduces the complexity that signal is mutual, improves manipulation efficiency, more meets the universal of modern industry thing connection technology.
In one embodiment of the invention, described bluetooth module is used for, after the instruction receiving Bluetooth handheld device or the intelligent terminal transmission of erecting equipment client software, perform at least one function in the preservation of the optimum configurations of transmitter, data query and information.Along with the development of science and technology and the universal of smart mobile phone, radio communication also steps into industrial circle gradually.Wireless blue tooth is as a kind of low-power consumption, and two-forty, shortcut link and the wireless transmission protocol communicated, be more and more subject to the favor of people.Bluetooth is the radiotelegraphy of a kind of support equipment short haul connection (being generally within 10m).The standard of bluetooth is IEEE802.15, is operated in 2.4GHz frequency band, and bandwidth is 1Mb/s.Electronic installation can couple together through bluetooth each other, eliminates traditional electric wire.Bluetooth wireless technology specification for global member company freely.This technology is implemented energetically in the manufacture commercial city of many industries in its product, uses messy electric wire, realizes seamless link, flow transmission is stereo, transmit data or carry out voice communication to reduce.Bluetooth technology is run at 2.4GHz wave band, and this wave band is a kind of industry without the need to licensing, science and technology, medical science (ISM) radio wave band.Just because of this, except cost of equipment, you do not need for using Bluetooth technology to pay any expense again.Bluetooth technology obtains unprecedentedly to be applied widely, and the product of this technology integrated, from mobile phone, automobile to Medical Devices, uses the user of this technology from consumer, industrial market to enterprise etc., numerous.Low-power consumption, the chip solution of small size and low cost makes Bluetooth technology even can be applied in atomic little equipment.There is the mobile phone of Bluetooth technology, PDA, laptop computer and automobile etc. user can be allowed to be within join domain can immediately arrange and browsing apparatus status information.After equipment installs bluetooth module, by Bluetooth handheld device or in client intelligent mobile phone, a device clients software is installed, just can pass through mobile phone connection device in allowed limits, realize the optimum configurations to transmitter, the functions such as data query and information preservation.More meet the universal of modern industry thing connection technology.
In one embodiment of the invention, described transmitter comprises micro-control unit MCU, power supply, buffer circuit, input circuit, temperature-compensation circuit, COMM, display DISPLAY circuit, metering circuit and current output circuit.The circuit of described transmitter can with reference to circuit diagram as seen in figs. 2a-2b.
In one embodiment of the invention, described processor operation iterative algorithm specifically comprises determines iteration variable, sets up iterative relation, controls iterative process.With the liquid level change that the precondition that electric capacity carries out measuring is the reflection fluid to be measured that measured capacitance can be linear.The source of error of capacitance type sensor mainly contains: the edge effect of electric capacity, the stray capacitance of cable, stray capacitance and the impact of extraneous temperature.Wherein main impact is the change of environment temperature and the change of specific inductive capacity.When variation of ambient temperature, usually cause the change of the larger change of specific inductive capacity and the components and parts performance parameter of metering circuit, thus cause larger level gauging error.To the record of environment temperature, the detection analysis of specific inductive capacity is a very important job.
Iteration is that the method used for realizing this process is referred to as process of iteration (IterativeMethod) by solving the process of problem (being generally solve an equation or system of equations) from an a series of approximate solution of initial estimation set off in search in numerical analysis.Generally can be defined as follows: for given system of linear equations x=Bx+f, (x, B, f are here all matrix, any system of linear equations can be transformed into this form), (be subscript in bracket with formula x (k+1)=Bx (k)+f, represent the x that iteration obtains for k time, k=0 time initial) progressively bring into and ask the method for approximate solution to be called process of iteration (or claiming single order stationary iterative method).If limx (k) exists when k trend is infinitely great, be designated as x*, claim this Iterating Convergence.Obvious x* is exactly this solution of equations, otherwise is called that process of iteration is dispersed.Iterative algorithm is usually used in the root asking system of equations, make X=(x0, x1 ..., xn-1)
If system of equations is: xi=gi (X) (I=0,1 ..., n-1)
The iterative algorithm of system of equations root is then asked to be described below:
[algorithm] process of iteration asks the root of system of equations
{for(i＝0；i
X=initial approximation root;
do{
for(i＝0；i
y＝x；
for(i＝0；i
x＝gi(X)；
for(delta＝0.0,i＝0；i
if(fabs(y-x)>delta)delta＝fabs(y-x)；
}while(delta>Epsilon)；
for(i＝0；i
Printf (" approximation root of variable x [%d] is %f ", I, x);
printf(“\n”)；
}
Utilize iterative algorithm to deal with problems, need the work carrying out following three aspects:
Determine iteration variable: in the problem that can solve with iterative algorithm, at least there is the variable of a continuous value that made new advances by old value recursion directly or indirectly, this variable is exactly iteration variable.
Set up iterative relation formula: so-called iterative relation formula, refer to the formula (or relation) how releasing its next value from the previous value of variable.The foundation of iterative relation formula is the key solving iterative problem, usually can forwards or the method retrodicted come.
Iterative process is controlled: the finishing iteration process when? this writes the problem that iterative program must consider.Iterative process can not be allowed ceaselessly to repeat down.The control of iterative process can be divided into two kinds of situations usually: a kind of to be required iterations a be value determined, can calculate; Another kind is that required iterations cannot be determined.For the previous case, the circulation that can build a fixed number of times realizes the control to iterative process; For latter event, need to analyze the condition for finishing iteration process further.Use this special iterative algorithm, cumulative analysis can be carried out for several temperature spot data collected, set up an ordered series of numbers, real-Time Compensation is carried out to liquid level, reach the object correcting the linearity.
Intelligent iterative method is exactly the homogeneity temperature-sensitive measuring technique based on New fluid level gauge.Use this technology to record data that a lot of group affects by environment temperature and change in dielectric constant to a series of numerical analysis of these data analysis.Therefrom find out optimized linearity curve.
In one embodiment of the invention, five segment electrodes are provided with in described insulation tube.Alternatively, described five segment electrodes are respectively the first electrode, the second electrode, the 3rd electrode, the 4th electrode, the 5th electrode; Described first electrode is arranged on the top of described upper side tubular axis line, described 5th electrode is arranged on the below of described lower side tubular axis line, and described second electrode, described 3rd electrode, described 4th electrode are successively set between described upper side tubular axis line and lower side tubular axis line.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (7)
1. a condenser type intelligent boiler liquid level of steam drum meter, it is characterized in that, comprising: processor, metal cylinder, be arranged on transmitter above described metal cylinder, be arranged on the vapour condensation device inside described metal cylinder, the insulation tube be arranged in described vapour condensation device, the bluetooth module that is connected with processor; Described processor runs the iterative algorithm preset and at least one the temperature spot data collected is carried out cumulative analysis, builds ordered series of numbers, carries out real-Time Compensation, to correct the linearity to liquid level; The side of described metal cylinder is provided with the upper side pipe and lower side pipe that are connected with the lateral steam tube of drum and water side pipe, and bottom is provided with sewage draining exit; Be provided with at least two segment electrodes in described insulation tube, mutually isolated between described electrode, described electrode is connected with transmitter by wire; Described bluetooth module is connected with processor by wire; Described bluetooth module is connected with transmitter by wire.
2. condenser type intelligent boiler liquid level of steam drum meter according to claim 1, it is characterized in that, described bluetooth module is used for, after the instruction receiving Bluetooth handheld device or the intelligent terminal transmission of erecting equipment client software, perform at least one function in the preservation of the optimum configurations of transmitter, data query and information.
3. condenser type intelligent boiler liquid level of steam drum meter according to claim 1 and 2, it is characterized in that, described transmitter comprises micro-control unit MCU, power supply, buffer circuit, input circuit, temperature-compensation circuit, COMM, display DISPLAY circuit, metering circuit and current output circuit.
4. condenser type intelligent boiler liquid level of steam drum meter according to claim 1 and 2, is characterized in that, described processor operation iterative algorithm specifically comprises determines iteration variable, sets up iterative relation, controls iterative process.
5. condenser type intelligent boiler liquid level of steam drum meter according to claim 4, it is characterized in that, the described control to iterative process comprises: after determining iterations, and the circulation of a structure fixed number of times realizes the control to iterative process; Or, when iterations cannot be determined, analyze the condition of finishing iteration process of being used for.
6. condenser type intelligent boiler liquid level of steam drum meter according to claim 1 and 2, is characterized in that, be provided with five segment electrodes in described insulation tube.
7. condenser type intelligent boiler liquid level of steam drum meter according to claim 6, is characterized in that, described five segment electrodes are respectively the first electrode, the second electrode, the 3rd electrode, the 4th electrode, the 5th electrode; Described first electrode is arranged on the top of described upper side tubular axis line, described 5th electrode is arranged on the below of described lower side tubular axis line, and described second electrode, described 3rd electrode, described 4th electrode are successively set between described upper side tubular axis line and lower side tubular axis line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510581250.3A CN105222866A (en) | 2015-09-14 | 2015-09-14 | A kind of condenser type intelligent boiler liquid level of steam drum meter |
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| CN201510581250.3A CN105222866A (en) | 2015-09-14 | 2015-09-14 | A kind of condenser type intelligent boiler liquid level of steam drum meter |
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Cited By (2)
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| CN106225876A (en) * | 2016-08-18 | 2016-12-14 | 四川泛华航空仪表电器有限公司 | Condenser type temperature-compensating level measurement sensor |
| CN107782421A (en) * | 2017-10-12 | 2018-03-09 | 三川智慧科技股份有限公司 | Based on the calibration method without magnetic NB IoT Internet of Things water meter measurement threshold values |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225876A (en) * | 2016-08-18 | 2016-12-14 | 四川泛华航空仪表电器有限公司 | Condenser type temperature-compensating level measurement sensor |
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| CN107782421A (en) * | 2017-10-12 | 2018-03-09 | 三川智慧科技股份有限公司 | Based on the calibration method without magnetic NB IoT Internet of Things water meter measurement threshold values |
| CN107782421B (en) * | 2017-10-12 | 2020-02-11 | 三川智慧科技股份有限公司 | Calibration method for water meter metering threshold value based on nonmagnetic NB-IoT (NB-IoT) internet of things |
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Effective date of registration: 20181115 Address after: 102488 No. 18-D1162 Kaixuan Avenue Construction Road, Liangxiang, Fangshan District, Beijing Applicant after: Beijing morning Miao Technology Co. Ltd. Address before: 453500 South Main Road, Yuanyang County, Xinxiang City, Henan Province, 106 with 16 Applicant before: Xinxiang Hengguan Meter Co., Ltd. |
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Application publication date: 20160106 |