CN103292925A - Method for quickly and accurately converting temperature on basis of quick table lookup and Newton iteration - Google Patents
Method for quickly and accurately converting temperature on basis of quick table lookup and Newton iteration Download PDFInfo
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- CN103292925A CN103292925A CN2013101942886A CN201310194288A CN103292925A CN 103292925 A CN103292925 A CN 103292925A CN 2013101942886 A CN2013101942886 A CN 2013101942886A CN 201310194288 A CN201310194288 A CN 201310194288A CN 103292925 A CN103292925 A CN 103292925A
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Abstract
The invention provides a method for quickly and accurately converting the temperature on the basis of quick table lookup and Newton iteration. The method includes comparing a resistance value of a temperature sensor to a standard indexing table of sensor materials to quickly find a temperature range corresponding to the resistance value in the indexing table; converting standard 'resistance-temperature' physical formulas corresponding to the sensor materials into a corresponding iterative formula by a quick Newton iterative algorithm; using one of values in the temperature range found in the first step as an initial value of the iterative formula and defining a final temperature value precision range; computing by the aid of the quick iterative algorithm to obtain a temperature value with the required precision. The method has the advantage that the temperature detected by the temperature sensor at a monitoring point can be quickly, accurately and reliably acquired.
Description
Technical field
The present invention relates to hydroelectric system temperature patrol inspection device field, particularly a kind ofly accurately sensor resistance is converted to the check point method of temperature based on fast zoom table and Newton iterative.
Background technology
Temperature parameter is one of production process parameters commonly used in the present commercial production, and especially the part temperature parameter participates in alarm and stoppage protection in power plant.The temperature patrol inspection device of electric system at present, the check point of system temperature more (as 72,96 points), and monitoring objective relatively disperses; Therefore obtain the temperature that the monitoring point temperature sensor detects fast, accurately, reliably, giving warning in advance with the accident that guarantees the electric system device has very important significance with normal operational monitoring tool.At present the temperature checking method to temperature sensor is divided into two kinds substantially in the temperature patrol inspection device, and a kind of is that (as Pt100, Cu50) Dui Ying resistance divides kilsyth basalt to table look-up fast to do to be similar to and gets temperature value with sensor; Another is done with sensor material correspondence " resistance-temperature " experimental formula and calculates temperature value.But these two kinds of methods have shortcoming clearly, though the quick temperature value that obtains of tabling look-up is all inaccurate; To cause uploading the temperature value greatly slow to the speed of main website and experimental formula is calculated in actual thermometric chip the rooting calculated amount.
The temperature patrol inspection device of using always is a kind of approximate detection method to the detection of temperature mostly at present, and calculation of complex.And various precision equipments are more and more in electric system, and temperature parameter obtains temperature fast and accurately and detects extremely important to the abnormality alarming of equipment and normal operation as an important environmental parameter.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of branch kilsyth basalt of searching temperature sensor fast and lock accurate temperature range, utilize the Newton iteration fast algorithm accurately to obtain temperature value according to temperature range then as initial value, so just can reach the not only fast but also accurate effect that obtains the monitor temperature value.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
The invention provides the quick accurate transformation method of temperature of a kind of fast zoom table and Newton iteration,
S1: utilize the standard of the resistance value control sensor material of temperature sensor to divide kilsyth basalt to find out resistance value corresponding temperature range in minute kilsyth basalt rapidly;
S2: utilize Newton iteration to calculate express method the standard of sensor material correspondence " resistance-temperature " physical equation, be converted to corresponding iterative formula;
S3: utilize one of them value of the temperature range of searching among the S1 as the initial value of iterative formula, and limit final temperature value accuracy rating;
S4: utilize the iteratively faster algorithm to calculate the temperature value of demand precision.
Described iterative formula is:
The platinum resistance iteration function: f'(T)=R
0(A+2BT);
Wherein A, B are temperature-coefficient of electrical resistance, R
0Resistance value when being 0 ° of C;
A＝3.9083×10
-3,°C
-1；
B＝-5.775×10
-7,°C
-2；
The copper resistance iteration function: f'(T)=R
0[alpha+beta (2T-100)+γ (3T
2-200T)];
Wherein A, B are temperature-coefficient of electrical resistance, R
0Resistance value when being 0 ° of C;
α＝4.280×10
-3,°C
-1；
β＝-9.31×10
-8,°C
-2；
γ＝1.23×10
-9,°C
-3；
The formula of trying to achieve the temperature iterative value is as follows, and get suitable initial value then and can ask final accurate temperature with the fixed precision of calculating,
Platinum resistance: T
N+1=T
n-(R
0(1+AT+BT
2)-R
T) (R
0(A+2BT));
Copper resistance:
T
n+1＝T
n-(R
0(1+αT+βT(T-100)+γT
2(T-100))-R
T)(R
0(α+β(2T-100)+γ(3T
2-2T100)))。
The invention has the advantages that: can guarantee obtaining fast of temperature monitoring data by fast zoom table and fast algorithm, utilize Newton iterative conversion experimental formula can quick and precisely obtain corresponding temperature value simultaneously, guaranteed the Device Testing precision, the demand that tallies with the actual situation.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of instructions, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is process flow diagram of the present invention.
Embodiment
As shown in Figure 1, the present invention discloses a kind of fast zoom table and the quick accurate transformation method of temperature of Newton iteration,
At first, utilize the standard of the resistance value control sensor material of temperature sensor to divide kilsyth basalt to find out resistance value corresponding temperature range in minute kilsyth basalt rapidly;
Secondly, utilize Newton iteration to calculate express method the standard of sensor material correspondence " resistance-temperature " physical equation, be converted to corresponding iterative formula;
The iteration function of asking temperature value to obtain two formula according to process of iteration is:
The platinum resistance iteration function: f'(T)=R
0(A+2BT);
Wherein A, B are temperature-coefficient of electrical resistance, R
0Resistance value when being 0 ° of C;
A＝3.9083×10
-3,°C
-1；
B＝-5.775×10
-7,°C
-2；
The copper resistance iteration function: f'(T)=R
0[alpha+beta (2T-100)+γ (3T
2-200T)];
Wherein A, B are temperature-coefficient of electrical resistance, R
0Resistance value when being 0 ° of C;
α＝4.280×10
-3,°C
-1；
β＝-9.31×10
-8,°C
-2；
γ＝1.23×10
-9,°C
-3；
The formula of trying to achieve the temperature iterative value is as follows.Get suitable initial value then and can ask final accurate temperature with the fixed precision of calculating,
Platinum resistance: T
N+1=T
n-(R
0(1+AT+BT
2)-R
T) (R
0(A+2BT));
Copper resistance:
T
n+1＝T
n-(R
0(1+αT+βT(T-100)+γT
2(T-100))-R
T)(R
0(α+β(2T-100)+γ(3T
2-2T100)))
Then, utilize one of them value of the temperature range of searching in the first step as the initial value of iterative formula, and limit final temperature value accuracy rating;
At last, utilize the iteratively faster algorithm to calculate the temperature value of demand precision.
The present invention can guarantee obtaining fast of temperature monitoring data by fast zoom table and fast algorithm, utilizes Newton iterative conversion experimental formula can quick and precisely obtain corresponding temperature value simultaneously, has guaranteed the Device Testing precision, the demand that tallies with the actual situation.
The above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a fast zoom table and the quick accurate transformation method of temperature of Newton iteration is characterized in that:
S1: utilize the standard of the resistance value control sensor material of temperature sensor to divide kilsyth basalt to find out resistance value corresponding temperature range in minute kilsyth basalt rapidly;
S2: utilize Newton iteration to calculate express method the standard of sensor material correspondence " resistance-temperature " physical equation, be converted to corresponding iterative formula;
S3: utilize one of them value of the temperature range of searching among the S1 as the initial value of iterative formula, and limit final temperature value accuracy rating;
S4: utilize the iteratively faster algorithm to calculate the temperature value of demand precision.
2. a kind of fast zoom table according to claim 1 and the quick accurate transformation method of temperature of Newton iteration, it is characterized in that: described iterative formula is:
The platinum resistance iteration function: f'(T)=R
0(A+2BT);
Wherein A, B are temperature-coefficient of electrical resistance, R
0Resistance value when being 0 ° of C;
A＝3.9083×10
-3,°C
-1；
B＝-5.775×10
-7,°C
-2；
The copper resistance iteration function: f'(T)=R
0[alpha+beta (2T-100)+γ (3T
2-200T)];
Wherein A, B are temperature-coefficient of electrical resistance, R
0Resistance value when being 0 ° of C;
α＝4.280×10
-3,°C
-1；
β＝-9.31×10
-8,°C
-2；
γ＝1.23×10
-9,°C
-3；
The formula of trying to achieve the temperature iterative value is as follows, and get suitable initial value then and can ask final accurate temperature with the fixed precision of calculating,
Platinum resistance: T
N+1=T
n-(R
0(1+AT+BT
2)-R
T) (R
0(A+2BT));
Copper resistance:
T
n+1＝T
n-(R
0(1+αT+βT(T-100)+γT
2(T-100))-R
T)(R
0(α+β(2T-100)+γ(3T
2-2T100)))。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101942886A CN103292925A (en) | 2013-05-22 | 2013-05-22 | Method for quickly and accurately converting temperature on basis of quick table lookup and Newton iteration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101942886A CN103292925A (en) | 2013-05-22 | 2013-05-22 | Method for quickly and accurately converting temperature on basis of quick table lookup and Newton iteration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103292925A true CN103292925A (en) | 2013-09-11 |
Family
ID=49094171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101942886A Pending CN103292925A (en) | 2013-05-22 | 2013-05-22 | Method for quickly and accurately converting temperature on basis of quick table lookup and Newton iteration |
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|---|---|
| CN (1) | CN103292925A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576410A (en) * | 2017-09-12 | 2018-01-12 | 北京天诚同创电气有限公司 | Temperature checking method and device |
-
2013
- 2013-05-22 CN CN2013101942886A patent/CN103292925A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 张莉等: "牛顿法在Pt100铂热电阻温度计算中的应用特性分析", 《现代电子技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576410A (en) * | 2017-09-12 | 2018-01-12 | 北京天诚同创电气有限公司 | Temperature checking method and device |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20130911 |