CN104330135A - Continuous liquid level simulation emulation method - Google Patents

Abstract

The invention relates to a continuous liquid level simulation emulation method, which comprises the following steps that (1) parameters of a converter and a liquid level sensor arranged in a storage tank during emulation are set; (2) relationship data between the expected storage tank time t<expected> and the liquid level height H is obtained; (3) a triangular wave feature voltage data Utrag and the linear feature voltage data Uline of the storage tank are calculated; (4) the triangular wave feature voltage data Utrag and the linear feature voltage data Uline obtained through calculation are stored, in addition, the voltage data Utrag and the voltage data Uline are converted into analog voltage to be output to the outside, and meanwhile, the voltage is output to the outside through a network. The method provided by the invention has the advantages that the liquid level height information is converted into the output voltage information of the liquid level sensor converter, triangular wave feature voltage signals and the linear feature voltage signals are output in a simulation emulation way, meanwhile, the synchronous back collection on the output signals can be realized for verifying the accuracy of the output signals, and the problem that the function test cannot be carried out on ground or onboard liquid level processing equipment due to no signal source can be solved.

Description

A kind of liquid level analog simulation method continuously

Technical field

The present invention relates to a kind of continuous liquid level analog simulation method based on capacitance liquid level measuring principle, particularly a kind of method by liquid level convert information being simulation and producing capacitance type sensor transducer output voltage data, belongs to liquid level simulating technical field.

Background technology

At space industry, carrier rocket, performing each time before launch mission, has strict requirement to the test coverage of each system, expects all can to arrive by Complete test the links in each system.Therefore, be related to the continuous level parameter of one of the key parameter of rocket launching success or failure propellant, then for loading system, utilize system all most important.And, a new generation's carrier rocket adopts the continuous level gauging principle of merogenesis condenser type to realize level gauging, be installed on the liquid level change in the merogenesis capacitance level transducer real-time perception tank of tank inside, a road triangular wave characteristic voltage signal and a linear characteristic voltage signal is exported by transducer, be illustrated in figure 1 merogenesis capacitance level transducer output signal schematic diagram, liquid level processor on ground level gauging data processing software and arrow receives two-way voltage signal respectively, carries out processing, calculating propellant liquid level data.Therefore, the original voltage signal that fluid level measuring device exports is tested most important for the examination of liquid level processor on ground level parameter treatment facility and arrow and spreadability.But, the unit test equipment of existing liquid level product is only confined to measure the parameter of sensor, transducer and equipment itself, the voltage signal source of liquid level situation of change when truly can reflect filling or flight can not be provided, be used as liquid level treatment facility on ground and arrow with this and carry out dynamic functon test.Therefore, for equipment relevant to level parameter result in each system can not reach 100% test coverage requirement.Therefore, propose a kind of liquid level analog simulation method based on merogenesis capacitance type liquid level measuring principle to have important practical significance.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, a kind of liquid level analog simulation method is continuously provided, liquid level convert information can be the output voltage information of liquid level sensor transducer by the method, triangular wave characteristic voltage signal and linear voltage can be exported by analog simulation, the synchronous back production to output signal can be realized simultaneously, to verify the accuracy of output signal, solve due to no signal source, the problem of functional test cannot be carried out to liquid level treatment facility on ground or arrow.

Above-mentioned purpose of the present invention is mainly achieved by following technical solution:

A kind of liquid level simulating analogy method continuously, comprises the steps:

Step (one), the parameter of liquid level sensor and transducer in tank when arranging emulation, comprise the setting height(from bottom) H of the merogenesis capacitance level transducer installed in tank ₀, liquid level sensor quantity m, i-th liquid level sensor and the i-th+1 liquid level sensor root spacing ξ _ithe merogenesis unit number n of (i=1 ~ m-1), i-th liquid level sensor _i, merogenesis element length L, interval length δ, transducer export triangular wave characteristic voltage minimum value u _tmin, transducer exports triangular wave characteristic voltage maximal value u _tmax, transducer linearity voltage minimum u _lminwith transducer linearity voltage max u _lmax;

Step (two), obtain expecting the time t of tank _expectthe relation data of-liquid level H, concrete grammar is as follows:

(1), in read data files tank time m-liquid level original data record, and calculate the time interval △ t of arbitrary neighborhood two original data records;

(2), according to setting expected data time interval △ t _expectwith the time interval △ t of adjacent two original data records, determine to need the total line number m in original data record after data inserting record:

M=△ t/ △ t _expect;

(3), in step (1) time m-liquid level raw data carry out linear interpolation, formed with △ t _expectfor the time t in the time interval _expectthe relation data of-liquid level H;

Step (three), the triangular wave characteristic voltage data Utrag calculating tank and linear characteristic voltage data Uline, concrete grammar is as follows:

(1), according to the setting height(from bottom) H of the liquid level sensor in step () ₀, liquid level sensor quantity m, i-th liquid level sensor and the i-th+1 liquid level sensor root spacing ξ _i(i=1 ~ m-1) carries out segmentation to tank liquid level, and the quantity of segmentation is identical with the radical of sensor, calculates the measurement range of every root sensor respectively, and the measurement range of i-th sensor is [H _imin, H _imax];

$\left\{\begin{array}{cc}{H}_{i\min }=H_0+{\mathrm{\&Sigma;}}_{j=1}^{i-1}{\mathrm{\&xi;}}_j+{\mathrm{\&Sigma;}}_{j=1}^{i-1}(L+\mathrm{\&delta;})\&times;n_j-(i-1)\&times;\mathrm{\&delta;}& i>1\\ H_{i\max }=H_0+{\mathrm{\&Sigma;}}_{j=1}^{i-1}{\mathrm{\&xi;}}_j+{\mathrm{\&Sigma;}}_{j=1}^i(L+\mathrm{\&delta;})\&times;n_j-i\&times;\mathrm{\&delta;}& i>1\\ H_{1\min }=H_0& i=1\\ H_{i\max }=H_0+(L+\mathrm{\&delta;})\&times;n_1-\mathrm{\&delta;}& i=1\end{array}\right.;$

(2), according to the minimum value H of i-th liquid level sensor measurement range in step () _1min, merogenesis element length L, interval length δ calculate the measurement range of each merogenesis unit in every root sensor respectively, in i-th sensor, the measurement range of a kth merogenesis unit is [h _ikmin, h _ikmax];

$\left\{\begin{array}{cc}{h}_{\mathrm{ik}\min }=H_{i\min }+{\mathrm{\&Sigma;}}_{k=1}^{i-1}(L+\mathrm{\&delta;})\&times;n_j& k>1\\ h_{\mathrm{ik}\max }=H_{i\min }+{\mathrm{\&Sigma;}}_{k=1}^{i-1}(L+\mathrm{\&delta;})\&times;n_j+L& k>1\\ h_{i1\min }=H_{i\min }& k=1\\ h_{i1\max }=H_{i\min }+L& k=1\end{array}\right.;$

(3), according to the merogenesis unit number n of the liquid level sensor quantity m in step (), i-th liquid level sensor _iwith merogenesis element length L, calculate effective level gauging height H _effectively:

(4) the linear equation slope K of linear characteristic, is calculated:

(5), according to the slope K value calculated in step (4), linear characteristic linear equation intercept B is calculated:

B=H _effectively-K × u _lmax

(6), judge whether current level height H is positioned at a wherein sensor measurement scope, if not in the measurement range of any sensor, then triangular wave characteristic output voltage is u _tmin, linear characteristic output voltage is a upper time line characteristic output voltage; If current level height H is positioned at wherein i-th sensor measurement scope, then enter step (7);

(7), judge whether current level altitude information H is positioned at the measurement range of one of them merogenesis unit of described i-th sensor measurement scope, if in the measurement range of a not merogenesis unit wherein, then triangular wave characteristic output voltage is a upper moment triangular wave characteristic output voltage, and linear characteristic output voltage is a upper time line characteristic output voltage; If in the measurement range of a kth merogenesis unit wherein, the elevation carrection scope of a described kth merogenesis unit is [h _ikmin, h _ikmax], then triangular wave characteristic output voltage calculates and enters step (8), and linear characteristic output voltage calculates and enters step (9);

(8), judge that the joint number k that current level is positioned at i-th sensor merogenesis unit is odd number or even number, namely count from sensor base, described merogenesis unit place joint number k is odd number or even number, if k is odd number, then according to the voltage U trag of the triangular wave characteristic of following formulae discovery current level output:

$\mathrm{Utrag}=\frac{{H-h}_{\mathrm{ik}\min }}{L}\&times;(u_{t\max }-u_{t\min })+u_{t\min };$

If be even number, then according to the voltage U trag of the triangular wave characteristic of following formulae discovery current level output:

$\mathrm{Utrag}=u_{t\max }-\frac{{H-h}_{\mathrm{ik}\min }}{L}\&times;(u_{t\max }-u_{t\min });$

(9), according to K, B value calculated in step (5), according to following formulae discovery current linear characteristic voltage Uline:

$\left\{\begin{array}{cc}\mathrm{Uline}=\frac{L\&times;({\mathrm{\&Sigma;}}_{j=1}^{i-1}{n}_j+k-1)+{H-h}_{\mathrm{ik}\min }-B}{K}& i>1\\ \mathrm{Uline}=\frac{L\&times;(k-1)+{H-h}_{\mathrm{ik}\min }-B}{K}& i=1\end{array}\right.;$

Step (four), the triangular wave characteristic voltage data Utrag calculated and linear characteristic voltage data Uline to be stored, when receiving startup output order, described voltage data Utrag and Uline is converted to analog voltage outwards export, described voltage data Utrag and Uline is outwards exported by network simultaneously.

In above-mentioned continuous liquid level simulating analogy method, in step (four), described voltage data Utrag and Uline is converted to while analog voltage outwards exports, described analog voltage is gathered and stores, exporting accuracy with verifying voltage.

In above-mentioned continuous liquid level simulating analogy method, expected data time interval △ t described in step (two) _expectbe less than the time interval △ t of original data record, and △ t _expectfor 10ms-50ms.

In above-mentioned continuous liquid level simulating analogy method, start output order in step (four) and adopt " network startup " pattern, " hardware-initiated " pattern or " manually booting " pattern to send.

The present invention compared with prior art has following beneficial effect:

(1), the present invention is by reading liquid level data file, be the output voltage information of liquid level sensor transducer by liquid level convert information, triangular wave characteristic voltage signal and linear voltage can be exported by analog simulation, the synchronous back production to output signal can be realized simultaneously, to verify the accuracy of output signal, solve due to no signal source, the problem of functional test cannot be carried out to liquid level treatment facility on ground or arrow;

(2), the data source of the continuous liquid level simulating analogy method of the present invention derives from data file, can be according to demand, altitude information in flexible Update Table file, realize under different noise conditions, different filling or under gushing situation and differently to rise, under decline rate, the simulation data of continuous liquid level;

(3), in the present invention's continuous liquid level simulating analogy method, parameter configuration module can according to different tank requirement, the characterisitic parameter of continuous liquid level sensor installation parameter and sensor own is configured, thus realize the continuous liquid level simulating output of different tank, test of many times, applicability is strong, applied range;

(4), the continuous liquid level simulating of the present invention's continuous liquid level simulating analogy method exports and has multiple Starting mode, any one mode all can start the simulation data of continuous liquid level, avoid the failure risk that single start-up mode is brought, improve the reliability started;

(5), the continuous liquid level simulating analogy method of the present invention can provide the simulation data of analog voltage and the network of data to export simultaneously, not only can for providing continuous liquid level simulating voltage source using voltage signal as the external unit of input source, also can for providing continuous liquid level simulating data source by network data as the external system of input source;

(6), the voltage signal of simulation data can carry out back production and store by the continuous liquid level simulating analogy method of the present invention, is conducive to the verification of correctness to output signal.

Accompanying drawing explanation

Fig. 1 is merogenesis capacitance level transducer output signal schematic diagram;

Fig. 2 is liquid level analog simulation method general flow chart of the present invention;

Fig. 3 is optimum configurations schematic diagram of the present invention;

Fig. 4 is the time t that the present invention obtains the tank expected _expectthe relation data process flow diagram of-liquid level H;

Fig. 5 is triangular wave characteristic voltage data Utrag and the linear characteristic voltage data Uline process flow diagram that the present invention calculates tank;

Fig. 6 is network startup model process figure of the present invention;

Fig. 7 is the hardware-initiated model process figure of the present invention.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail.

The continuous liquid level analog simulation method of the present invention based on merogenesis capacitance type liquid level measuring principle, the liquid level simulating method of to be a kind of by liquid level data transformations be sensor and the triangular wave characteristic voltage signal that transducer exports and linear characteristic voltage signal.The method will include the data file of time and elevation information as master data source, by sensors configured correlation parameter, be voltage by high-degree of conversion, and receiving startup command post-simulation output voltage signal, and voltage signal is carried out synchronous back production, to verify the accuracy of output signal.

If Fig. 2 is liquid level analog simulation method general flow chart of the present invention, be illustrated in figure 3 optimum configurations schematic diagram of the present invention, when arranging emulation, the parameter of liquid level sensor and transducer in corresponding tank, comprises the setting height(from bottom) parameter H of the merogenesis capacitance level transducer installed in tank ₀, liquid level sensor quantity m, i-th liquid level sensor and the i-th+1 liquid level sensor root spacing ξ _ithe merogenesis unit number n of (i=1 ~ m-1), i-th liquid level sensor _i, merogenesis element length parameter L, interval length parameter δ, transducer export triangular wave characteristic voltage minimum value u _tmin, transducer exports triangular wave characteristic voltage maximal value u _tmax, transducer linearity voltage minimum u _lminwith transducer linearity voltage max u _lmax.

Above-mentioned parameter can set flexibly according to the design parameter of the merogenesis capacitance level transducer installed in tank, the minimum value u of output voltage in the embodiment of the present invention _tmin=0.01V, maximal value u _tma=4.8V, linearity voltage minimum u _lmin=0.01V, maximal value u _lmax=4.8V.

As shown in Figure 2, the continuous liquid level simulating analogy method of the present invention, specifically comprises the steps: step (), obtains the time t of the tank expected _expectthe relation data of-liquid level H, is illustrated in figure 4 the time t that the present invention obtains the tank expected _expectthe relation data process flow diagram of-liquid level H, concrete grammar is as follows:

(1), in read data files tank time m-liquid level original data record, namely not corresponding in the same time concrete liquid level, and calculate the time interval △ t of arbitrary neighborhood two original data records;

(2), according to setting expected data time interval △ t _expectwith the time interval △ t of adjacent two original data records, determine to need the total line number m in original data record after data inserting record:

M=△ t/ △ t _expect;

Expected data time interval △ t _expectbe less than the time interval △ t of original data record, and △ t _expectfor 10ms-50ms.The data interval time △ t expected in the embodiment of the present invention _expect=0.01s, m=△ t × 100;

(3), to the time m-liquid level data in step (1) carry out linear interpolation, formed with △ t _{phase hope}for the time t in the time interval _expectthe relation data of-liquid level H, namely with △ t _expectfor the not corresponding in the same time liquid level H value in the time interval.

Time in data file, m-altitude information can be modified according to demand, such as, if the voltage signal of desired output has certain noise, when the editor of altitude information, the fluctuation of the altitude information that noise brings should be added, if wish to obtain voltage signal when liquid level gushes, then the general trend of the altitude information edited should progressively be successively decreased.

Step (three), the triangular wave characteristic voltage data Utrag calculating tank and linear characteristic voltage data Uline, be illustrated in figure 5 triangular wave characteristic voltage data Utrag and linear characteristic voltage data Uline process flow diagram that the present invention calculates tank, concrete grammar is as follows:

(1), according to the setting height(from bottom) H of the liquid level sensor in step () ₀, liquid level sensor quantity m, i-th liquid level sensor and the i-th+1 liquid level sensor root spacing ξ _i(i=1 ~ m-1) carries out segmentation to tank liquid level, and the quantity of segmentation is identical with the radical of sensor, calculates the measurement range of every root sensor respectively, and the measurement range of i-th sensor is [H _imin, H _imax];

$\left\{\begin{array}{cc}{H}_{i\min }=H_0+{\mathrm{\&Sigma;}}_{j=1}^{i-1}{\mathrm{\&xi;}}_j+{\mathrm{\&Sigma;}}_{j=1}^{i-1}(L+\mathrm{\&delta;})\&times;n_j-(i-1)\&times;\mathrm{\&delta;}& i>1\\ H_{i\max }=H_0+{\mathrm{\&Sigma;}}_{j=1}^{i-1}{\mathrm{\&xi;}}_j+{\mathrm{\&Sigma;}}_{j=1}^i(L+\mathrm{\&delta;})\&times;n_j-i\&times;\mathrm{\&delta;}& i>1\\ H_{1\min }=H_0& i=1\\ H_{i\max }=H_0+(L+\mathrm{\&delta;})\&times;n_1-\mathrm{\&delta;}& i=1\end{array}\right.;$

(2), according to the minimum value H of i-th liquid level sensor measurement range in step () _1min, merogenesis element length L, interval length δ calculate the measurement range of each merogenesis unit in every root sensor respectively, in i-th sensor, the measurement range of a kth merogenesis unit is [h _ikmin, h _ikmax];

$\left\{\begin{array}{cc}{h}_{\mathrm{ik}\min }=H_{i\min }+{\mathrm{\&Sigma;}}_{k=1}^{i-1}(L+\mathrm{\&delta;})\&times;n_j& k>1\\ h_{\mathrm{ik}\max }=H_{i\min }+{\mathrm{\&Sigma;}}_{k=1}^{i-1}(L+\mathrm{\&delta;})\&times;n_j+L& k>1\\ h_{i1\min }=H_{i\min }& k=1\\ h_{i1\max }=H_{i\min }+L& k=1\end{array}\right.;$

(3), according to the merogenesis unit number n of the liquid level sensor quantity m in step (), i-th liquid level sensor _iwith merogenesis element length L, calculate effective level gauging height H _effectively:

(4) the linear equation slope K of linear characteristic, is calculated:

(5), according to the slope K value calculated in step (4), linear characteristic linear equation intercept B is calculated:

B=H _effectively-K × u _lmax;

(6), judge whether current level height H is positioned at a wherein sensor measurement scope, if not in the measurement range of any sensor, then triangular wave characteristic output voltage is u _tmin, linear characteristic output voltage is a upper time line characteristic output voltage; If current level height H is positioned at wherein i-th sensor measurement scope, then enter step (7);

(7), judge whether current level altitude information H is positioned at the measurement range of one of them merogenesis unit of described i-th sensor measurement scope, if in the measurement range of a not merogenesis unit wherein, then triangular wave characteristic output voltage is a upper moment triangular wave characteristic output voltage, and linear characteristic output voltage is a upper time line characteristic output voltage; If in the measurement range of a kth merogenesis unit wherein, the elevation carrection scope of a described kth merogenesis unit is [h _ikmin, h _ikmax], then triangular wave characteristic output voltage calculates and enters step (8), and linear characteristic output voltage calculates and enters step (9);

(8), judge that the joint number k that current level is positioned at i-th sensor merogenesis unit is odd number or even number, namely count from sensor base, described merogenesis unit place joint number k is odd number or even number, if k is odd number, then according to the voltage U trag of the triangular wave characteristic of following formulae discovery current level output:

$\mathrm{Utrag}=\frac{{H-h}_{\mathrm{ik}\min }}{L}\&times;(u_{t\max }-u_{t\min })+u_{t\min };$

If be even number, then according to the voltage U trag of the triangular wave characteristic of following formulae discovery current level output:

$\mathrm{Utrag}=u_{t\max }-\frac{{H-h}_{\mathrm{ik}\min }}{L}\&times;(u_{t\max }-u_{t\min });$

(9), according to K, B value calculated in step (5), according to following formulae discovery current linear characteristic voltage Uline:

$\left\{\begin{array}{cc}\mathrm{Uline}=\frac{L\&times;({\mathrm{\&Sigma;}}_{j=1}^{i-1}{n}_j+k-1)+{H-h}_{\mathrm{ik}\min }-B}{K}& i>1\\ \mathrm{Uline}=\frac{L\&times;(k-1)+{H-h}_{\mathrm{ik}\min }-B}{K}& i=1\end{array}\right.;$

Step (four), the moment of the triangular wave characteristic voltage data Utrag, linear characteristic voltage data Uline and the correspondence that calculate to be stored, by time and voltage data one_to_one corresponding, when receiving startup output order, using the time zero-bit that this instruction exports as emulation liquid level, triangular wave characteristic voltage data Utrag, linear characteristic voltage data Uline are carried out DA conversion by analog output card, according to the corresponding time, triangular wave characteristic Simulation voltage and linear characteristic emulation voltage is externally exported.Simultaneously by triangular wave characteristic voltage data Utrag and linear characteristic voltage data Uline, according to the communications protocol of regulation, data are sent to external system by udp protocol.

The present invention controls output state by enabled instruction.Pattern that start-up mode comprises " network startup ", " hardware-initiated " pattern and " manually booting " pattern.Three models all can produce " startup " instruction.

Be illustrated in figure 6 network startup model process figure of the present invention; " network startup " pattern adopts the mode receiving external network signal control voltage module and export.Described " network startup " pattern adopts TCP/IP communications protocol and external system to carry out network communication, continuous liquid level software is TCP client, receiving network data is also resolved, when the network instruction be resolved to is for " TRUE ", then control voltage output module and emulated data network output module export, if time " FALSE ", then control imitation voltage output module and emulated data network output module stop exporting.

" hardware-initiated " pattern adopts the external hardware not mode that exports of live contact switching signal control imitation voltage output module and emulated data network output module.Be illustrated in figure 7 the hardware-initiated model process figure of the present invention, " hardware-initiated " simulated implementation step is as follows:

A, timing acquiring external hardware not live contact switching signal.When the signal collected is high level, then think external hardware not live contact switching signal close, if low level, then think external hardware not live contact switching signal disconnect.

B, judge that whether this signal collected is identical with the signal collected last time, if identical, enter next step; Otherwise do not carry out subsequent operation.

If the current signal collected of c is high level, then control voltage output module exports, and when the signal collected if current is low level, then control imitation voltage output module and emulated data network output module stop exporting.

Voltage data Utrag and Uline is converted to while analog voltage outwards exports, and gathers and stores, export accuracy with verifying voltage to analog voltage.

The above; be only the embodiment of the best of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.

The content be not described in detail in instructions of the present invention belongs to the known technology of professional and technical personnel in the field.

Claims (4)

1. a continuous liquid level simulating analogy method, is characterized in that: comprise the steps:

Step (one), the parameter of liquid level sensor and transducer in tank when arranging emulation, comprise the setting height(from bottom) H of the merogenesis capacitance level transducer installed in tank ₀, liquid level sensor quantity m, i-th liquid level sensor and the i-th+1 liquid level sensor root spacing ξ _ithe merogenesis unit number n of (i=1 ~ m-1), i-th liquid level sensor _i, merogenesis element length L, interval length δ, transducer export triangular wave characteristic voltage minimum value u _tmin, transducer exports triangular wave characteristic voltage maximal value u _tmax, transducer linearity voltage minimum u _lminwith transducer linearity voltage max u _lmax;

Step (two), obtain expecting the time t of tank _expectthe relation data of-liquid level H, concrete grammar is as follows:

(1), in read data files tank time m-liquid level original data record, and calculate the time interval △ t of arbitrary neighborhood two original data records;

(2), according to setting expected data time interval △ t _expectwith the time interval △ t of adjacent two original data records, determine to need the total line number m in original data record after data inserting record:

M=△ t/ △ t _expect;

(3), in step (1) time m-liquid level raw data carry out linear interpolation, formed with △ t _expectfor the time t in the time interval _expectthe relation data of-liquid level H;

Step (three), the triangular wave characteristic voltage data Utrag calculating tank and linear characteristic voltage data Uline, concrete grammar is as follows:

(1), according to the setting height(from bottom) H of the liquid level sensor in step () ₀, liquid level sensor quantity m, i-th liquid level sensor and the i-th+1 liquid level sensor root spacing ξ _i(i=1 ~ m-1) carries out segmentation to tank liquid level, and the quantity of segmentation is identical with the radical of sensor, calculates the measurement range of every root sensor respectively, and the measurement range of i-th sensor is [H _imin, H _imax];

$\left\{\begin{array}{cc}{H}_{i\min }=H_0+{\mathrm{\&Sigma;}}_{j=1}^{i-1}{\mathrm{\&xi;}}_j+{\mathrm{\&Sigma;}}_{j=1}^{i-1}(L+\mathrm{\&delta;})\&times;n_j-(i-1)\&times;\mathrm{\&delta;}& i>1\\ H_{i\max }=H_0+{\mathrm{\&Sigma;}}_{j=1}^{i-1}{\mathrm{\&xi;}}_j+{\mathrm{\&Sigma;}}_{j-1}^i(L+\mathrm{\&delta;})\&times;n_j--i\&times;\mathrm{\&delta;}& i>1\\ H_{1\min }=H_0& i=1\\ H_{i\max }=H_0+(L+\mathrm{\&delta;})\&times;n_1-\mathrm{\&delta;}& i=1\end{array}\right.;$

(2), according to the minimum value H of i-th liquid level sensor measurement range in step () _1min, merogenesis element length L, interval length δ calculate the measurement range of each merogenesis unit in every root sensor respectively, in i-th sensor, the measurement range of a kth merogenesis unit is [h _ikmin, h _ikmax];

$\left\{\begin{array}{cc}{h}_{\mathrm{ik}\min }=H_{i\min }+{\mathrm{\&Sigma;}}_{k=1}^{i-1}(L+\mathrm{\&delta;})\&times;n_j& k>1\\ h_{\mathrm{ik}\max }=H_{i\min }+{\mathrm{\&Sigma;}}_{k=1}^{i-1}(L+\mathrm{\&delta;})\&times;n_j+L& k>1\\ h_{i1\min }=H_{i\min }& k=1\\ h_{i1\max }=H_{i\min }+L& k=1\end{array}\right.;$

(3), according to the merogenesis unit number n of the liquid level sensor quantity m in step (), i-th liquid level sensor _iwith merogenesis element length L, calculate effective level gauging height H _effectively:

(4) the linear equation slope K of linear characteristic, is calculated:

(5), according to the slope K value calculated in step (4), linear characteristic linear equation intercept B is calculated:

(6), judge whether current level height H is positioned at a wherein sensor measurement scope, if not in the measurement range of any sensor, then triangular wave characteristic output voltage is u _tmin, linear characteristic output voltage is a upper time line characteristic output voltage; If current level height H is positioned at wherein i-th sensor measurement scope, then enter step (7);

(7), judge whether current level altitude information H is positioned at the measurement range of one of them merogenesis unit of described i-th sensor measurement scope, if in the measurement range of a not merogenesis unit wherein, then triangular wave characteristic output voltage is a upper moment triangular wave characteristic output voltage, and linear characteristic output voltage is a upper time line characteristic output voltage; If in the measurement range of a kth merogenesis unit wherein, the elevation carrection scope of a described kth merogenesis unit is [h _ikmin, h _ikmax], then triangular wave characteristic output voltage calculates and enters step (8), and linear characteristic output voltage calculates and enters step (9);

(8), judge that the joint number k that current level is positioned at i-th sensor merogenesis unit is odd number or even number, namely count from sensor base, described merogenesis unit place joint number k is odd number or even number, if k is odd number, then according to the voltage U trag of the triangular wave characteristic of following formulae discovery current level output:

$\mathrm{Utrag}=\frac{H-h_{\mathrm{ik}\min }}{L}\&times;(u_{t\max }-u_{t\min })+u_{t\min };$

If be even number, then according to the voltage U trag of the triangular wave characteristic of following formulae discovery current level output:

$\mathrm{Utrag}=u_{t\max }-\frac{H-h_{\mathrm{ik}\min }}{L}\&times;(u_{t\max }-u_{t\min });$

(9), according to K, B value calculated in step (5), according to following formulae discovery current linear characteristic voltage Uline:

$\left\{\begin{array}{cc}\mathrm{Uline}=\frac{L\&times;({\mathrm{\&Sigma;}}_{j=1}^{i-1}{n}_j+k-1)+H-h_{\mathrm{ik}\min }-B}{K}& i>1\\ \mathrm{Uline}=\frac{L\&times;(k-1)+H-h_{\mathrm{ik}\min }-B}{K}& i=1\end{array}\right.;$

Step (four), the triangular wave characteristic voltage data Utrag calculated and linear characteristic voltage data Uline to be stored, when receiving startup output order, described voltage data Utrag and Uline is converted to analog voltage outwards export, described voltage data Utrag and Uline is outwards exported by network simultaneously.

2. the continuous liquid level simulating analogy method of one according to claim 1, it is characterized in that: in described step (four), described voltage data Utrag and Uline is converted to while analog voltage outwards exports, described analog voltage gathered and stores, exporting accuracy with verifying voltage.

3. the continuous liquid level simulating analogy method of one according to claim 1, is characterized in that: expected data time interval △ t described in described step (two) _expectbe less than the time interval △ t of original data record, and △ t _expectfor 10ms-50ms.

4. the continuous liquid level simulating analogy method of one according to claim 1, is characterized in that: start output order in described step (four) and adopt " network startup " pattern, " hardware-initiated " pattern or " manually booting " pattern to send.