Method for measuring temperature distance of bent-state composite conductive polymer coil

Abstract

The invention relates to a method for measuring the temperature distance of a bent-state composite conductive polymer coil, and belongs to the technical field of sensing. And under the condition that the curvature radius of the coil is the maximum curvature radius calibration value not greater than the actual curvature radius and the minimum curvature radius calibration value not less than the actual curvature radius, determining an effective resistance calibration interval containing the coil resistance, and further obtaining the measured temperature by using a dual interpolation method. Under the two conditions, obtaining an effective impedance calibration interval containing coil impedance corresponding to a maximum ranging temperature calibration value not greater than the measured temperature and a minimum ranging temperature calibration value not less than the measured temperature, and further obtaining a corresponding distance value of the coil impedance at the measured temperature by using a dual interpolation method; and finally, obtaining the actual curvature radius and the measured distance at the measured temperature by using an interpolation method. The method provided by the invention can realize the temperature and distance measurement of the composite conductive polymer coil in the bending state, and is suitable for the field of temperature and distance measurement between narrow curved surface layers of industrial equipment and the like.

Description

Technical Field

[0001] The invention belongs to the field of sensor technology, and in particular relates to temperature and distance sensors. Background Art

[0002] In contemporary engineering applications such as the measurement of interlayer states on narrow curved surfaces of major equipment and the development of multi-sensitive functional electronic skin, a single intrinsic flexible sensor device is required to have the ability to measure both temperature and distance. To solve this problem, the existing technology uses a composite conductive polymer coil as a sensing probe to achieve temperature and distance measurement (Luheng Wang*, Potential of using coil-shaped conductive polymer composite to measure temperature and non-contact gap. IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2021, 70: 9505706.). In actual engineering applications, the sensor needs to work in a bent state, and different degrees of bending of the sensor will cause its key characteristics to change, which will have an adverse effect on the measurement. Therefore, there is an urgent need to design a method that enables a composite conductive polymer coil to complete temperature and distance measurement in a bent state. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a method for measuring temperature of a bent composite conductive polymer coil, comprising the following steps:

[0004] Obtain the resistance measurement value r and impedance measurement value z of the composite conductive polymer coil when the curvature radius is C, the measured temperature is T, and the measured distance is D; determine the maximum curvature radius calibration value C that is not greater than C m and the minimum curvature radius calibration value C not less than C m+1 , where m is an integer between 1 and M-1, and M is the number of calibration values of the curvature radius;

[0005] The radius of curvature is C m The resistance calibration value R(C m , T p ) and the resistance calibration value R(C) of the minimum temperature-resistance characteristic not less than r m , T p+1 ), where p is an integer between 1 and P-1, and P is the radius of curvature C m The number of temperature calibration values of the temperature-resistance characteristic under the conditions, T p For R(C m , Tp ) corresponds to the temperature calibration value of the temperature-resistance characteristic, T p+1 For R(C m , T p+1 ) corresponds to the temperature calibration value of the temperature-resistance characteristic; the curvature radius C is calculated according to formula (1) m The temperature value T(C m );

[0006]

[0007] The radius of curvature is C m+1 The resistance calibration value R(C m+1 , T q ) and the resistance calibration value R(C) of the minimum temperature-resistance characteristic not less than r m+1 , T q+1 ), where q is an integer between 1 and Q-1, and Q is the radius of curvature C m+1 The number of temperature calibration values of the temperature-resistance characteristic under the conditions; T q The radius of curvature is C m+1 Under the conditions with R(C m+1 , T q ) corresponds to the temperature calibration value of the temperature-resistance characteristic, T q+1 The radius of curvature is C m+1 Under the conditions with R(C m+1 , T q+1 ) corresponds to the temperature calibration value of the temperature-resistance characteristic; the curvature radius C is calculated according to formula (2) m+1 The temperature value T(C m+1 );

[0008]

[0009] The measured temperature T is calculated according to formula (3);

[0010]

[0011] Determine the radius of curvature as C m The temperature calibration value t of the maximum distance-impedance characteristic not greater than T under the condition n and the temperature calibration value t of the minimum distance-impedance characteristic not less than T n+1 , where n is an integer between 1 and N-1, and N is the radius of curvature C m The number of temperature calibration values of the distance-impedance characteristics under the conditions;

[0012] The radius of curvature is C mAnd the temperature calibration value of the distance-impedance characteristic is t n Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition u (C m , t n ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z u+1 (C m , t n ), where u is an integer between 1 and U-1, and U is the radius of curvature C m And the temperature calibration value of the temperature-impedance characteristic is t n The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then obtain the value of Z u (C m , t n ) The distance calibration value of the distance-impedance characteristic corresponding to u (C m , t n ), and Z u+1 (C m , t n ) The distance calibration value of the distance-impedance characteristic corresponding to u+1 (C m , t n );

[0013] According to formula (4), the curvature radius is C m And the temperature calibration value of the temperature-impedance characteristic is t n The distance value d(C m , t n );

[0014]

[0015] The radius of curvature is C m And the temperature calibration value of the distance-impedance characteristic is t n+1 Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition v (C m , t n+1 ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z v+1 (C m , t n+1 ), where v is an integer between 1 and V-1, and V is the radius of curvature C m And the temperature calibration value of the temperature-impedance characteristic is t n+1 The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z v (C m , t n+1) The distance calibration value of the distance-impedance characteristic corresponding to v (C m , t n+1 ), and Z v+1 (C m , t n+1 ) The distance calibration value of the distance-impedance characteristic corresponding to v+1 (C m , t n+1 );

[0016] According to formula (5), the curvature radius is C m And the temperature calibration value of the temperature-impedance characteristic is t n+1 The distance value d(C m , t n+1 );

[0017]

[0018] According to formula (6), the curvature radius is C m The distance value d(C m , T);

[0019]

[0020] Determine the radius of curvature as C m+1 The temperature calibration value s of the maximum distance-impedance characteristic not greater than T under the condition k and the temperature calibration value s of the minimum distance-impedance characteristic not less than T k+1 , where k is an integer between 1 and K-1, K is the radius of curvature C m+1 The number of temperature calibration values of the distance-impedance characteristics under the conditions;

[0021] The radius of curvature is C m+1 And the temperature calibration value of the distance-impedance characteristic is s k Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition x (C m+1 , s k ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z x+1 (C m+1 , s k ), where X is an integer between 1 and X-1, and X is the radius of curvature C m+1 And the temperature calibration value of the temperature-impedance characteristic is s k The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z x (C m+1 , sk ) The distance calibration value of the distance-impedance characteristic corresponding to x (C m+1 , s k ), and Z x+1 (C m+1 , s k ) The distance calibration value of the distance-impedance characteristic corresponding to x+1 (C m+1 , s k );

[0022] According to formula (7), the curvature radius is C m+1 And the temperature calibration value of the temperature-impedance characteristic is s k The distance value d(C m+1 , s k );

[0023]

[0024] The radius of curvature is C m+1 And the temperature calibration value of the distance-impedance characteristic is s k+1 Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition y (C m+1， s k+1 ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z y+1 (C m+1 , s k+1 ), where y is an integer between 1 and Y-1, and Y is the radius of curvature C m+1 And the temperature calibration value of the temperature-impedance characteristic is s k+1 The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z y (C m+1 , s k+1 ) The distance calibration value of the distance-impedance characteristic corresponding to y (C m+1 , s k+1 ), and Z y+1 (C m+1， s k+1 ) The distance calibration value of the distance-impedance characteristic corresponding to y+1 (C m+1 , s k+1 );

[0025] According to formula (8), the curvature radius is C m+1 And the temperature calibration value of the temperature-impedance characteristic is s k+1 The distance value d(C m+1 , s k+1 );

[0026]

[0027] According to formula (9), the curvature radius is C m+1 The distance value d(C m+1， T);

[0028]

[0029] The measured distance D is calculated according to formula (10) under the conditions of curvature radius C and measured temperature T;

[0030]

[0031] Features and effects of the present invention:

[0032] The present invention proposes a method for measuring the temperature of a bent composite conductive polymer coil. First, a maximum curvature radius calibration value no greater than the actual curvature radius and a minimum curvature radius calibration value no less than the actual curvature radius are determined. When the curvature radius is at the maximum curvature radius calibration value no greater than the actual curvature radius, an effective resistance calibration interval including the coil resistance is determined, and then a double interpolation method is used to obtain the measured temperature corresponding to this curvature radius calibration value. When the curvature radius is at the minimum curvature radius calibration value no less than the actual curvature radius, an effective resistance calibration interval including the coil resistance is determined, and then a double interpolation method is used to obtain the measured temperature corresponding to this curvature radius calibration value. Under the conditions that the curvature radius is a maximum curvature radius calibration value no greater than the actual curvature radius and a minimum curvature radius calibration value no less than the actual curvature radius, the effective impedance calibration interval including the coil impedance corresponding to the maximum distance measurement temperature calibration value no greater than the measured temperature and the minimum distance measurement temperature calibration value no less than the measured temperature is obtained, respectively. Double interpolation is then used to obtain the distance value corresponding to the coil impedance at the measured temperature. Finally, interpolation is used to obtain the measured distance at the actual curvature radius and the measured temperature. The method proposed in this invention can realize temperature and distance measurement of a composite conductive polymer coil in a bent state, and is suitable for temperature and distance measurement between narrow curved surfaces of modern industrial equipment and the design of temperature and distance sensors for artificial electronic skin. DETAILED DESCRIPTION

[0033] The DC channel and AC channel of the temperature distance sensor signal processing system are used to obtain the resistance measurement value r and impedance measurement value z of the composite conductive polymer coil when the curvature radius is C, the measured temperature is T and the measured distance is D; the maximum curvature radius calibration value C that is not greater than C is determined. m and the minimum curvature radius calibration value C not less than C m+1 , where m is an integer between 1 and M-1, and M is the number of calibration values of the curvature radius;

[0034] The radius of curvature is C m The resistance calibration value R(C m , T p ) and the resistance calibration value R(C) of the minimum temperature-resistance characteristic not less than r m , T p+1 ), where p is an integer between 1 and P-1, and P is the radius of curvature C m The number of temperature calibration values of the temperature-resistance characteristic under the conditions, T p For R(C m , T p ) corresponds to the temperature calibration value of the temperature-resistance characteristic, T p+1 For R(C m , T p+1 ) The temperature calibration value of the temperature-resistance characteristic corresponding to the temperature; the curvature radius C is calculated by using the programming tool installed in the microcomputer according to formula (11) m The temperature value T(C m );

[0035]

[0036] The radius of curvature is C m+1 The resistance calibration value R(C m+1 , T q ) and the resistance calibration value R(C) of the minimum temperature-resistance characteristic not less than r m+1， T q+1 ), where q is an integer between 1 and Q-1, and Q is the radius of curvature C m+1 The number of temperature calibration values of the temperature-resistance characteristic under the conditions; T q The radius of curvature is C m+1 Under the conditions with R(C m+1 , T q ) corresponds to the temperature calibration value of the temperature-resistance characteristic, T q+1 The radius of curvature is C m+1 Under the conditions with R(C m+1 , T q+1 ) The temperature calibration value of the temperature-resistance characteristic corresponding to the temperature; the curvature radius C is calculated by using the programming tool installed in the microcomputer according to formula (12) m+1 The temperature value T(C m+1 );

[0037]

[0038] The measured temperature T is calculated using the programming tool installed in the microcomputer according to formula (13);

[0039]

[0040] Determine the radius of curvature as C m The temperature calibration value t of the maximum distance-impedance characteristic not greater than T under the condition n and the temperature calibration value t of the minimum distance-impedance characteristic not less than T n+1 , where n is an integer between 1 and N-1, and N is the radius of curvature C m The number of temperature calibration values of the distance-impedance characteristics under the conditions;

[0041] The radius of curvature is C m And the temperature calibration value of the distance-impedance characteristic is t n Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition u (C m , t n ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z u+1 (C m , t n ), where u is an integer between 1 and U-1, and U is the radius of curvature C m And the temperature calibration value of the temperature-impedance characteristic is t n The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z u (C m , t n ) The distance calibration value of the distance-impedance characteristic corresponding to u (C m , t n ), and Z u+1 (C m , t n ) The distance calibration value of the distance-impedance characteristic corresponding to u+1 (C m , t n );

[0042] The curvature radius C is calculated by using the programming tool installed in the microcomputer according to formula (14). m And the temperature calibration value of the temperature-impedance characteristic is t n The distance value d(C m , t n );

[0043]

[0044] The radius of curvature is C mAnd the temperature calibration value of the distance-impedance characteristic is t n+1 Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition v (C m , t n+1 ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z v+1 (C m , t n+1 ), where v is an integer between 1 and V-1, and V is the radius of curvature C m And the temperature calibration value of the temperature-impedance characteristic is t n+1 The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z v (C m , t n+1 ) The distance calibration value of the distance-impedance characteristic corresponding to v (C m , t n+1 ), and Z v+1 (C m , t n+1 ) The distance calibration value of the distance-impedance characteristic corresponding to v+1 (C m , t n+1 );

[0045] The curvature radius C is calculated by using the programming tool installed in the microcomputer according to formula (15). m And the temperature calibration value of the temperature-impedance characteristic is t n+1 The distance value d(C m , t n+1 ):

[0046]

[0047] The curvature radius C is calculated by using the programming tool installed in the microcomputer according to formula (16). m The distance value d(C m , T);

[0048]

[0049] Determine the radius of curvature as C m+1 The temperature calibration value s of the maximum distance-impedance characteristic not greater than T under the condition k and the temperature calibration value s of the minimum distance-impedance characteristic not less than T k+1 , where k is an integer between 1 and K-1, K is the radius of curvature C m+1 The number of temperature calibration values of the distance-impedance characteristics under the conditions;

[0050] The radius of curvature is C m+1 And the temperature calibration value of the distance-impedance characteristic is s k Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition x (C m+1， s k ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z x+1 (C m+1 , s k ), where x is an integer between 1 and X-1, and X is the radius of curvature C m+1 And the temperature calibration value of the temperature-impedance characteristic is s k The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z x (C m+1 , s k ) The distance calibration value of the distance-impedance characteristic corresponding to x (C m+1 , s k ), and Z x+1 (C m+1 , s k ) The distance calibration value of the distance-impedance characteristic corresponding to x+1 (C m+1 , s k );

[0051] The curvature radius C is calculated by using the programming tool installed in the microcomputer according to formula (17). m+1 And the temperature calibration value of the temperature-impedance characteristic is s k The distance value d(C m+1 , s k );

[0052]

[0053] The radius of curvature is C m+1 And the temperature calibration value of the distance-impedance characteristic is s k+1 Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition y (C m+1 , s k+1 ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z y+1 (C m+1 , s k+1 ), where y is an integer between 1 and Y-1, and Y is the radius of curvature C m+1 And the temperature calibration value of the temperature-impedance characteristic is s k+1 The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Zy (C m+1 , s k+1 ) The distance calibration value of the distance-impedance characteristic corresponding to y (C m+1 , s k+1 ), and Z y+1 (C m+1 , s k+1 ) The distance calibration value of the distance-impedance characteristic corresponding to y+1 (C m+1 , s k+1 );

[0054] The curvature radius C is calculated by using the programming tool installed in the microcomputer according to formula (18). m+1 And the temperature calibration value of the temperature-impedance characteristic is s k+1 The distance value d(C m+1 , s k+1 );

[0055]

[0056] The curvature radius C is calculated by using the programming tool installed in the microcomputer according to formula (19). m+1 The distance value d(C m+1 , T);

[0057]

[0058] The measured distance D under the conditions of curvature radius C and measured temperature T is calculated using formula (20) using the programming tool installed in the microcomputer;

[0059]

[0060] Example

[0061] The DC channel of the temperature distance sensor signal processing system is used to obtain the resistance measurement value r of the coil composed of carbon nanotube-filled silicone rubber composite material when the curvature radius is C, the measured temperature is T, and the measured distance is D; the AC channel of the temperature distance sensor signal processing system is used to obtain the impedance measurement value z of the coil composed of carbon nanotube-filled silicone rubber composite material when the curvature radius is C, the measured temperature is T, and the measured distance is D; and the maximum curvature radius calibration value C that is not greater than C is determined. m and the minimum curvature radius calibration value C not less than C m+1 , where m is an integer between 1 and M-1, and M is the number of calibration values of the curvature radius;

[0062] The radius of curvature is C mThe resistance calibration value R(C m , T p ) and the resistance calibration value R(C) of the minimum temperature-resistance characteristic not less than r m , T p+1 ), where p is an integer between 1 and P-1, and P is the radius of curvature C m The number of temperature calibration values of the temperature-resistance characteristic under the conditions, T p For R(C m , T p ) corresponds to the temperature calibration value of the temperature-resistance characteristic, T p+1 For R(C m , T p+1 ) corresponds to the temperature calibration value of the temperature-resistance characteristic; LabWindows / CVI is used to program and calculate the curvature radius C according to formula (21) m The temperature value T(C m );

[0063]

[0064] The radius of curvature is C m+1 The resistance calibration value R(C m+1 , T q ) and the resistance calibration value R(C) of the minimum temperature-resistance characteristic not less than r m+1 , T q+1 ), where q is an integer between 1 and Q-1, and Q is the radius of curvature C m+1 The number of temperature calibration values of the temperature-resistance characteristic under the conditions; T q The radius of curvature is C m+1 Under the conditions with R(C m+1 , T q ) corresponds to the temperature calibration value of the temperature-resistance characteristic, T q+1 The radius of curvature is C m+1 Under the conditions with R(C m+1 , T q+1 ) corresponds to the temperature calibration value of the temperature-resistance characteristic; LabWindows / CVI is used to program and calculate the curvature radius C according to formula (22) m+1 The temperature value T(C m+1 );

[0065]

[0066] The measured temperature T is calculated by programming according to formula (23) using LabWindows / CVI;

[0067]

[0068] Determine the radius of curvature as C m The temperature calibration value t of the maximum distance-impedance characteristic not greater than T under the condition n and the temperature calibration value t of the minimum distance-impedance characteristic not less than T n+1 , where n is an integer between 1 and N-1, and N is the radius of curvature C m The number of temperature calibration values of the distance-impedance characteristics under the conditions;

[0069] The radius of curvature is C m And the temperature calibration value of the distance-impedance characteristic is t n Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition u (C m , t n ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z u+1 (C m , t n ), where u is an integer between 1 and U-1, and U is the radius of curvature C m And the temperature calibration value of the temperature-impedance characteristic is t n The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z u (C m , t n ) The distance calibration value of the distance-impedance characteristic corresponding to u (C m , t n ), and Z u+1 (C m , t n ) The distance calibration value of the distance-impedance characteristic corresponding to u+1 (C m , t n );

[0070] The curvature radius C is obtained by programming and calculating according to formula (24) using LabWindows / CVI. m The temperature calibration value of the temperature-impedance characteristic is t n The distance value d(C m , t n );

[0071]

[0072] The radius of curvature is C m And the temperature calibration value of the distance-impedance characteristic is t n+1Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition v (C m , t n+1 ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z v+1 (C m , t n+1 ), where v is an integer between 1 and V-1, and V is the radius of curvature C m And the temperature calibration value of the temperature-impedance characteristic is t n+1 The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z v (C m , t n+1 ) The distance calibration value of the distance-impedance characteristic corresponding to v (C m , t n+1 ), and Z v+1 (C m , t n+1 ) The distance calibration value of the distance-impedance characteristic corresponding to v+1 (C m , t n+1 );

[0073] The curvature radius C is obtained by programming and calculating according to formula (25) using LabWindows / CVI. m And the temperature calibration value of the temperature-impedance characteristic is t n+1 The distance value d(C m , t n+1 );

[0074]

[0075] The curvature radius C is obtained by programming and calculating according to formula (26) using LabWindows / CVI. m The distance value d(C m , T);

[0076]

[0077] Determine the radius of curvature as C m+1 The temperature calibration value s of the maximum distance-impedance characteristic not greater than T under the conditions k and the temperature calibration value s of the minimum distance-impedance characteristic not less than T k+1 , where k is an integer between 1 and K-1, K is the radius of curvature C m+1 The number of temperature calibration values of the distance-impedance characteristics under the conditions;

[0078] The radius of curvature is Cm+1 And the temperature calibration value of the distance-impedance characteristic is s k Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition x (C m+1 , s k ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z x+1 (C m+1 , s k ), where X is an integer between 1 and X-1, and X is the radius of curvature C m+1 And the temperature calibration value of the temperature-impedance characteristic is s k The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z x (C m+1 , s k ) The distance calibration value of the distance-impedance characteristic corresponding to x (C m+1 , s k ), and Z x+1 (C m+1 , s k ) The distance calibration value of the distance-impedance characteristic corresponding to x+1 (C m+1 , s k );

[0079] The curvature radius C is calculated by programming according to formula (27) using LabWindows / CVI. m+1 And the temperature calibration value of the temperature-impedance characteristic is s k The distance value d(C m+1 , s k );

[0080]

[0081] The radius of curvature is C m+1 And the temperature calibration value of the distance-impedance characteristic is s k+1 Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition y (C m+1 ,s k+1 ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z y+1 (C m+1 , s k+1 ), where y is an integer between 1 and Y-1, and Y is the radius of curvature C m+1 And the temperature calibration value of the temperature-impedance characteristic is s k+1 The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z y (Cm+1 , s k+1 ) The distance calibration value of the distance-impedance characteristic corresponding to y (C m+1 , s k+1 ), and Z y+1 (C m+1 , s k+1 ) The distance calibration value of the distance-impedance characteristic corresponding to y+1 (C m+1 , s k+1 );

[0082] The curvature radius C is obtained by programming according to formula (28) using LabWindows / CVI. m+1 And the temperature calibration value of the temperature-impedance characteristic is s k+1 The distance value d(C m+1 , s k+1 );

[0083]

[0084] The curvature radius C is obtained by programming and calculating according to formula (29) using LabWindows / CVI. m+1 The distance value d(C m+1 , T);

[0085]

[0086] The measured distance D is calculated by programming using LabWindows / CVI according to formula (30) under the conditions of curvature radius C and measured temperature T;

[0087]

Claims

1. A method for measuring temperature of a bent composite conductive polymer coil, characterized in that: The method comprises the following steps: Obtain the resistance measurement value r and impedance measurement value z of the composite conductive polymer coil when the curvature radius is C, the measured temperature is T, and the measured distance is D; determine the maximum curvature radius calibration value C that is not greater than C m and the minimum curvature radius calibration value C not less than C m+1 , where m is an integer between 1 and M-1, and M is the number of calibration values of the curvature radius; The radius of curvature is C m The resistance calibration value R(C m , T p ) and the resistance calibration value R(C) of the minimum temperature-resistance characteristic not less than r m , T p+1 ), where p is an integer between 1 and P-1, and P is the radius of curvature C m The number of temperature calibration values of the temperature-resistance characteristic under the conditions, T p For R(C m , T p ) corresponds to the temperature calibration value of the temperature-resistance characteristic, T p+1 For R(C m , T p+1 ) corresponds to the temperature calibration value of the temperature-resistance characteristic; the curvature radius is calculated according to formula (1) as C m The temperature value T(C m ); The radius of curvature is C m+1 The resistance calibration value R(C m+1 , T q ) and the resistance calibration value R(C) of the minimum temperature-resistance characteristic not less than r m+1 , T q+1 ), where q is an integer between 1 and Q-1, and Q is the radius of curvature C m+1 The number of temperature calibration values of the temperature-resistance characteristic under the conditions; T q The radius of curvature is C m+1 Under the conditions with R(C m+1 , T q ) corresponds to the temperature calibration value of the temperature-resistance characteristic, T q+1 The radius of curvature is C m+1 Under the conditions with R(C m+1 , T q+1 ) corresponds to the temperature calibration value of the temperature-resistance characteristic; the curvature radius C is calculated according to formula (2) m+1 The temperature value T(C m+1 ); The measured temperature T is calculated according to formula (3); Determine the radius of curvature as C m The temperature calibration value t of the maximum distance-impedance characteristic not greater than T under the condition n and the temperature calibration value t of the minimum distance-impedance characteristic not less than T n+1 , where n is an integer between 1 and N-1, and N is the radius of curvature C m The number of temperature calibration values of the distance-impedance characteristics under the conditions; The radius of curvature is C m And the temperature calibration value of the distance-impedance characteristic is t n Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition u (C m , t n ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z u+1 (C m , t n ), where u is an integer between 1 and U-1, and U is the radius of curvature C m And the temperature calibration value of the temperature-impedance characteristic is t n The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z u (C m , t n ) The distance calibration value of the distance-impedance characteristic corresponding to u (C m , t n ), and Z u+1 (C m , t n ) The distance calibration value of the distance-impedance characteristic corresponding to u+1 (C m , t n ); According to formula (4), the curvature radius is C m And the temperature calibration value of the temperature-impedance characteristic is t n The distance value d(C m , t n ); The radius of curvature is C m And the temperature calibration value of the distance-impedance characteristic is t n+1 Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition v (C m , t n+1 ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z v+1 (C m , t n+1 ), where v is an integer between 1 and V-1, and V is the radius of curvature C m And the temperature calibration value of the temperature-impedance characteristic is t n+1 The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z v (C m , t n+1 ) The distance calibration value of the distance-impedance characteristic corresponding to v (C m , t n+1 ), and Z v+1 (C m , t n+1 ) The distance calibration value of the distance-impedance characteristic corresponding to v+1 (C m , t n+1 ); According to formula (5), the curvature radius is C m And the temperature calibration value of the temperature-impedance characteristic is t n+1 The distance value d(C m , t n+1 ); According to formula (6), the curvature radius is C m The distance value d(C m , T); Determine the radius of curvature as C m+1 The temperature calibration value s of the maximum distance-impedance characteristic not greater than T under the conditions k and the temperature calibration value s of the minimum distance-impedance characteristic not less than T k+1 , where k is an integer between 1 and K-1, K is the radius of curvature C m+1 The number of temperature calibration values of the distance-impedance characteristics under the conditions; The radius of curvature is C m+1 And the temperature calibration value of the distance-impedance characteristic is s k Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition x (C m+1 , s k ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z x+1 (C m+1 , s k ), where x is an integer between 1 and X-1, and X is the radius of curvature C m+1 And the temperature calibration value of the temperature-impedance characteristic is s k The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z x (C m+1 , s k ) The distance calibration value of the distance-impedance characteristic corresponding to x (C m+1 , s k ), and Z x+1 (C m+1 , s k ) The distance calibration value of the distance-impedance characteristic corresponding to x+1 (C m+1 ,s k ); According to formula (7), the curvature radius is C m+1 And the temperature calibration value of the temperature-impedance characteristic is s k The distance value d(C m+1 , s k ); The radius of curvature is C m+1 And the temperature calibration value of the distance-impedance characteristic is s k+1 Impedance calibration value Z of the maximum distance-impedance characteristic not greater than z under the condition y (C m+1 , s k+1 ) and the impedance calibration value Z of the minimum distance-impedance characteristic not less than z y+1 (C m+1 , s k+1 ), where y is an integer between 1 and Y-1, and Y is the radius of curvature C m+1 And the temperature calibration value of the temperature-impedance characteristic is s k+1 The number of impedance calibration values of the distance-impedance characteristic under the conditions; and then the value of Z y (C m+1 , s k+1 ) The distance calibration value of the distance-impedance characteristic corresponding to y (C m+1 , s k+1 ), and Z y+1 (C m+1 , s k+1 ) The distance calibration value of the distance-impedance characteristic corresponding to y+1 (C m+1 , s k+1 ); According to formula (8), the curvature radius is C m+1 And the temperature calibration value of the temperature-impedance characteristic is s k+1 The distance value d(C m+1 , s k+1 ); According to formula (9), the curvature radius is C m+1 The distance value d(C m+1 , T); The measured distance D is calculated according to formula (10) under the conditions of curvature radius C and measured temperature T;

Images