CN101936746A - Non-electric quantity determination system and method - Google Patents

Non-electric quantity determination system and method Download PDF

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CN101936746A
CN101936746A CN 201010243096 CN201010243096A CN101936746A CN 101936746 A CN101936746 A CN 101936746A CN 201010243096 CN201010243096 CN 201010243096 CN 201010243096 A CN201010243096 A CN 201010243096A CN 101936746 A CN101936746 A CN 101936746A
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non
value
signal
temperature
electrical quantity
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CN 201010243096
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CN101936746B (en )
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常先明
徐昭敏
耿东汉
陈小枫
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北京华控技术有限责任公司
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Abstract

The invention discloses a non-electric quantity determination system and a non-electric quantity determination method, which are used for determining a non-electric quantity. In the system and the method of the invention, relationships between the detected non-electric quantity and a frequency signal value and between the detected non-electric quantity and a temperature signal value are described by high-order nonlinear characteristic equations, and simultaneously, coefficients of the high-order nonlinear equations are calculated by a large amount of data fitting by using a high-order non-linear fitting algorithm, so the detection accuracy is ensured, and the condition of low detection accuracy caused by piecewise linear methods is avoided.

Description

一种非电学量测定系统及方法 An assay system and method for non-electrical quantity

技术领域 FIELD

[0001] 本发明涉及非电学量测定领域,更准确的说是涉及一种非电学量测定系统及方法。 [0001] The present invention relates to measuring the amount of non-electrical field, more precisely it relates to a system and method for measuring non-electrical quantity.

背景技术 Background technique

[0002] 电容传感器被广泛应用,但是电容传感器具有非线性的特性,而且其非线性特性随温度的变化而变化。 [0002] The capacitive sensors are widely used, but a capacitive sensor has a nonlinear characteristic, and nonlinear characteristic which changes with temperature changes.

[0003] 为了保证电容传感器的检测精度,现有技术中,在常温下应用分段线性的方法得出输入信号与输出信号之间的折线关系。 [0003] In order to ensure the detection accuracy of the capacitance sensor, the prior art, Methods piecewise linear fold line drawn at ordinary temperature relationship between an input signal and an output signal. 即为:将输入信号分成若干段,在每一段上都可以认为输入信号与输出信号之间是线性关系,对于这些量而言,在整个量程范围内是非线性的,但是就输入的某一局部范围之内,其输出信号和输入信号可以近似的认为是线性关系。 Namely: the input signal into a plurality of segments, each segment can be considered a linear relationship between the input signal and the output signal, for these quantities, it is non-linear over the entire range, but on a local input the range of its output signal and the input signal can be approximately regarded as a linear relationship. 分段数量越多,检测精度越高。 The more the number of segments, the higher the detection accuracy.

[0004] 但是在实际应用中,因为增加分段的数量会增加成本,所以分段的数量不宜太多, 因而使用分段线性方法的精度不能很高。 [0004] However, in practical applications, because of the increased number of segments may increase the cost, the number of segments of not too much, and thus the method using a piecewise linear accuracy not high.

发明内容 SUMMARY

[0005] 有鉴于此,本发明提供了一种非电学量测定系统及方法,不用进行分段操作,能够降低成本且检测精度较高。 [0005] Accordingly, the present invention provides a non-electrical quantity measurement system and method without segmenting operation, low cost, and high detection accuracy.

[0006] 本发明提供了一种非电学量测定系统,包括: [0006] The present invention provides a non-electrical quantity measuring system, comprising:

[0007] 采集非电学量并转换为电容信号值的电容传感器; [0007] collected and converted into an amount of non-electrical capacitance sensor capacitance signal value;

[0008] 连接所述电容传感器、将所述电容信号值转换为频率信号值的频率转换模块; [0008] The capacitive sensor is connected, converts the capacitance value of the frequency signal a frequency signal value conversion module;

[0009] 采集温度信号值的温度采集模块; [0009] temperature value acquired temperature signal acquisition module;

[0010] 连接所述频率转换模块和温度采集模块的微控制单元MCU模块,该MCU模块依据预设的高阶非线性特征方程处理所述频率信号值和所述温度信号值,得到所述非电学量的值。 Processing the characteristic equation of higher order nonlinear frequency signal and said temperature signal value value [0010] is connected to the frequency conversion module and a temperature acquisition module module of microcontroller unit MCU, the MCU module according to a preset, to obtain the non- value of the electric quantity.

[0011] 优选的,所述预设的高阶非线性特征方程为 [0011] Preferably, the predetermined nonlinear characteristic equation of higher order

[0012] Y = F4* (A1*T4+A2*T3+A3*T2+A4*T+A5) + [0012] Y = F4 * (A1 * T4 + A2 * T3 + A3 * T2 + A4 * T + A5) +

[0013] F3* (B 1*T4+B2*T3+B3*T2+B4*T+B5) + [0013] F3 * (B 1 * T4 + B2 * T3 + B3 * T2 + B4 * T + B5) +

[0014] F2* (C 1*T4+C2*T3+C3*T2+C4*T+C5) + [0014] F2 * (C 1 * T4 + C2 * T3 + C3 * T2 + C4 * T + C5) +

[0015] F* (D1*T4+D2*T3+D3*T2+D4*T+D5) + [0015] F * (D1 * T4 + D2 * T3 + D3 * T2 + D4 * T + D5) +

[0016] (E1*T4+E2*T3+E3*T2+E4*T+E5), [0016] (E1 * T4 + E2 * T3 + E3 * T2 + E4 * T + E5),

[0017] 其中,Y为所述非电学量的计算值,F为所述频率信号值,T为所述温度信号值, Al〜A5、Bl〜B5、Cl〜C5、Dl〜D5和El〜E5为所述高阶非线性特征方程的系数。 [0017] wherein, Y is the calculated value of the non-electrical quantity, F is the frequency of the signal value, T is the temperature signal value, Al~A5, Bl~B5, Cl~C5, Dl~D5 and El~ E5 is the high-order nonlinear coefficients in the characteristic equation.

[0018] 优选的,所述频率转换模块为RC振荡电路。 [0018] Preferably, the frequency conversion module RC oscillator circuit.

[0019] 优选的,本发明提供的系统还包括:数字接口模块,所述非电学量的计算值通过数字接口模块输出。 [0019] Preferably, the present invention provides a system further comprising: a digital interface module, the non-electrical quantity calculation value output through the digital interface module. [0020] 优选的,所述数字接口模块为串行外围设备接口SPI模块。 [0020] Preferably, said digital interface module for the serial peripheral interface SPI module.

[0021] 本发明还提供了一种非电学量测定方法,包括: [0021] The present invention further provides a non-electric quantity measuring method, comprising:

[0022] 采集多个已知非电学量、多个温度信号值和多个由所述已知非电学量经电容信号转换而来的频率信号值; [0022] collecting a plurality of known non-electrical quantity, a plurality of temperature signals from said plurality of values ​​and the known values ​​of the frequency signal by the amount of non-electrical signal converted from the capacitance;

[0023] 将所述已知非电学量、温度信号值和频率信号值输入所述非电学量与频率信号值、温度信号值之间的含有待定系数的高阶非线性特征方程并利用高阶非线性拟合算法计算出高阶非线性特征方程的待定系数; [0023] The characteristic equation of higher order nonlinear containing undetermined coefficients between the known non-electrical quantity, temperature signal value and a frequency value of the input signal and the frequency of the non-electrical quantity signal value, the value of the temperature signal and Higher Order Nonlinear fitting algorithm to calculate the undetermined coefficients of higher order nonlinear characteristic equation;

[0024] 采集未知非电学量并将所述非电学量转换为电容信号值,再将所述电容信号值转换为频率信号值,采集温度信号值; [0024] Acquisition unknown and non-electrical quantity of the non-electrical quantity signal value is converted to a capacitance, then the capacitance value of the signal into a frequency signal value acquired temperature signal value;

[0025] 将所述温度信号值和频率信号值代入已确定系数的所述高阶非线性特征方程并计算出所述未知非电学量的值。 [0025] The value of the temperature signal and the frequency signal values ​​into the determined coefficients of the characteristic equation of higher order nonlinear and calculated values ​​of the unknown non-electrical quantity.

[0026] 优选的,所述高阶非线性特征方程为 [0026] Preferably, wherein the high-order nonlinear equation

[0027] Y = F4* (A1*T4+A2*T3+A3*T2+A4*T+A5) + [0027] Y = F4 * (A1 * T4 + A2 * T3 + A3 * T2 + A4 * T + A5) +

[0028] F3 氺(B1*T4+B2*T3+B3*T2+B4*T+B5) + [0028] F3 Shui (B1 * T4 + B2 * T3 + B3 * T2 + B4 * T + B5) +

[0029] F2* (C1*T4+C2*T3+C3*T2+C4*T+C5) + [0029] F2 * (C1 * T4 + C2 * T3 + C3 * T2 + C4 * T + C5) +

[0030] F 氺(Dl 氺T4+D2 氺T3+D3 氺T2+D4 氺T+D5) + [0031 ] (E1*T4+E2*T3+E3*T2+E4*T+E5) [0030] F Shui (T4 + D2 Dl Shui Shui Shui T3 + D3 T2 + D4 Shui T + D5) + [0031] (E1 * T4 + E2 * T3 + E3 * T2 + E4 * T + E5)

[0032] 其中,Y为非电学量的计算值,F为所述频率信号值,T为所述温度信号值,Al〜 A5、Bl〜B5、Cl〜C5、Dl〜D5和El〜E5为所述高阶非线性特征方程的系数。 [0032] wherein Y calcd non-electrical quantities, F is the frequency of the signal value, T is the temperature signal value, Al~ A5, Bl~B5, Cl~C5, Dl~D5 and is El~E5 the high-order nonlinear coefficients in the characteristic equation.

[0033] 优选的,所述采集多个已知非电学量、多个温度信号值和多个由所述已知非电学量经电容信号转换而来的频率信号值为采集不低于10万个已知非电学量、不低于10万个温度信号值和不低于10万个由所述已知非电学量经电容信号转换而来的频率信号值。 [0033] Preferably, the plurality of collecting a known non-electrical quantity, a plurality of temperature signals from said plurality of values ​​and a known amount of non-electrical signal is frequency-converted from the capacitance of the signal acquisition is not less than 100,000 known non-electrical quantity, a temperature of not less than 100,000 and the signal value of not less than 100,000 by the amount of non-electrical known frequency signal value converted from a signal via a capacitor.

[0034] 优选的,所述采集多个温度信号值的过程包括: [0034] Preferably, the process of collecting temperature signals plurality of values ​​comprises:

[0035] 按照预设规律改变环境温度,分别采集不同环境温度下的温度信号值。 [0035] The changes in ambient temperature according to a predetermined rule, a temperature signal values ​​are acquired at different ambient temperatures.

[0036] 优选的,所述多个已知非电学量在数值上均勻分布;所述多个温度信号值在被采集的时间上均勻分布。 [0036] Preferably, the plurality of known non-uniform distribution of electrical quantities in value; the temperature of the plurality of signal values ​​to be evenly distributed over the collection time.

[0037] 优选的,所述多个已知非电学量为整数;所述多个温度信号值为整数。 [0037] Preferably, the plurality of known non-electrical quantity is an integer; integer value of the plurality of temperature signals.

[0038] 本发明提供的一种非电学量测定系统及方法能够将非电学量变换为频率信号值, 并采集温度信号值,将所述频率量和温度输入已经确定系数的所述高阶非线性特征方程, 计算出所检测的非电学量。 The high-order [0038] A non-electrical quantity measurement system and method of the present invention is capable of providing an amount of non-electrical signal into a frequency value, and the acquired temperature signal value, the frequency and temperature inputs have been determined coefficients linear characteristic equation, to calculate the amount of non-electrical detection. 由于本发明采用的是高阶非线性特征方程,不用进行分段计算, 能够降低成本。 Since the present invention uses a higher order nonlinear characteristic equation without segmentation calculation cost can be reduced. 并且,由于高阶非线性特征方程的系数根据大量的数据用高阶非线性拟合算法计算得出,所以精度较高。 Further, since the high order nonlinear coefficient calculated by the characteristic equation of higher order nonlinear fitting algorithm based on a lot of data, high precision.

附图说明 BRIEF DESCRIPTION

[0039] 为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。 [0039] In order to more clearly illustrate the technical solutions in the embodiments or the prior art embodiment of the present invention, briefly introduced hereinafter, embodiments are described below in the accompanying drawings or described in the prior art needed to be used in describing the embodiments the drawings are only some embodiments of the present invention, those of ordinary skill in the art is concerned, without creative efforts, can derive from these drawings other drawings.

[0040] 图1为本发明实施例一的一种非电学量测定系统;[0041] 图2为本发明实施例一的高阶非线性特征方程系数的确定方法; [0040] FIG 1 A non-electrical quantity measurement system according to an embodiment of the present invention; [0041] FIG. 2 is a method of determining the coefficients of higher order nonlinear equation features of one embodiment of the invention;

[0042] 图3为本发明实施例二的一种非电学量测定系统; [0042] FIG 3 A non-electrical quantity measurement system according to a second embodiment of the present invention;

[0043] 图4为本发明实施例三的一种非电学量测定系统; [0043] FIG 4 A non-electrical quantity measurement system according to a third embodiment of the present invention;

[0044] 图5为本发明实施例四的一种非电学量测定方法。 [0044] FIG 5 A non-electrical quantity measuring method according to a fourth embodiment of the present invention.

具体实施方式 detailed description

[0045] 下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。 [0045] below in conjunction with the present invention in the accompanying drawings, technical solutions of embodiments of the present invention are clearly and completely described, obviously, the described embodiments are merely part of embodiments of the present invention, but not all embodiments example. 基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。 Based on the embodiments of the present invention, all other embodiments of ordinary skill in the art without any creative effort shall fall within the scope of the present invention.

[0046] 为方便理解,现对某些词汇进行解释性说明: [0046] To facilitate understanding, now some vocabulary Explanatory note:

[0047] 高阶非线性拟合算法:先假设某一含有待定系数的高阶非线性特征方程符合所述特征方程中各参量之间的特征曲线或者曲面,然后采集大量已知的各参数数据,利用matlab拟合计算出所述特征方程的待定系数的数值,从而确定各参数的特征方程。 [0047] The high order nonlinear fitting algorithm: assume that the characteristic equation of a higher order nonlinear containing undetermined coefficients consistent with the characteristic curve or curved surface between the parameters of the characteristic equation, then the acquisition of a number of known data parameters using the calculated values ​​determined matlab fit the coefficients of the characteristic equation, equation to determine the characteristic of each parameter. 在所述高阶非线性拟合算法中,采集的数据越多,采集的数据分布越均勻,则确定的特征方程所描述的特征曲线或曲面越接近各参量之间真正的特征曲线或者曲面。 In the high-order nonlinear fitting algorithm, the more data acquisition, data acquisition distribution more uniform surface characteristic curve or the characteristic equation is described closer to the determined real characteristic curve between the parameter or a curved surface.

[0048] MCU :是英文Micro Control Unit的缩写,中文意思是微控制单元。 [0048] MCU: Micro Control Unit is the abbreviation of the English, Chinese means a micro control unit.

[0049] SPI :是英文Serial Peripheral Interface的缩写,中文意思是串行外围设备接□。 [0049] SPI: Serial Peripheral Interface is the English acronym, Chinese serial peripheral means connected □.

[0050] 参照图1,为本发明实施例一的一种非电学量测定系统。 [0050] Referring to FIG 1, a non-electric quantity measuring system according to one embodiment of the present invention.

[0051] 如图1所示,本实施例所述的一种非电学量测定系统包括:电容传感器模块101、 频率转换模块102、温度采集模块103、MCU模块104 ; [0051] As shown in FIG. 1, a non-electrical quantity measurement system according to the present embodiment of the embodiment comprises: a capacitance sensor module 101, a frequency conversion module 102, a temperature acquisition module 103, MCU module 104;

[0052] 所述电容传感器模块101采集非电学量,并转换为电容信号值输出给频率转换模块102,所述频率转换模块102将所述电容信号值转换为频率信号值并输出给所述MCU模块104,所述温度采集模块103采集温度信号值,并将得到的温度信号值输出给所述MCU模块104,所述MCU模块104将所述频率信号值、温度信号值带入所述非电学量与所述频率信号值、温度信号值之间的高阶非线性特征方程 [0052] The capacitance sensor module 101 collection of non-electrical quantity, and is converted to a capacitance value of the output signal to the frequency conversion module 102, a frequency conversion module 102 converts a signal value of said capacitance value, and outputs the signal to the MCU module 104, a temperature collection value temperature signal acquisition module 103, and the output value of the temperature signal obtained to the MCU module 104, the module 104 of the MCU frequency signal, temperature signal value into the non-electrical high order nonlinear characteristic equation between the amount of the frequency signal, temperature signal value

[0053] Y = F4* (A1*T4+A2*T3+A3*T2+A4*T+A5) + [0053] Y = F4 * (A1 * T4 + A2 * T3 + A3 * T2 + A4 * T + A5) +

[0054] F3* (B1*T4+B2*T3+B3*T2+B4*T+B5) + [0054] F3 * (B1 * T4 + B2 * T3 + B3 * T2 + B4 * T + B5) +

[0055] F2* (C1*T4+C2*T3+C3*T2+C4*T+C5) + [0055] F2 * (C1 * T4 + C2 * T3 + C3 * T2 + C4 * T + C5) +

[0056] F 氺(Dl 氺T4+D2 氺T3+D3 氺T2+D4 氺T+D5) + [0056] F Shui (T4 + D2 Dl Shui Shui Shui T3 + D3 T2 + D4 Shui T + D5) +

[0057] (E1*T4+E2*T3+E3*T2+E4*T+E5), [0057] (E1 * T4 + E2 * T3 + E3 * T2 + E4 * T + E5),

[0058] 并计算得出所述非电学量的数值3 [0058] and the calculated value of the non-electrical quantity 3

[0059] 其中,Y为所述非电学量的计算值,F为所述频率信号值,T为所述温度信号值, Al〜A5、Bl〜B5、Cl〜C5、Dl〜D5和El〜E5为所述高阶非线性特征方程的系数。 [0059] wherein, Y is the calculated value of the non-electrical quantity, F is the frequency of the signal value, T is the temperature signal value, Al~A5, Bl~B5, Cl~C5, Dl~D5 and El~ E5 is the high-order nonlinear coefficients in the characteristic equation.

[0060] 所述高阶非线性特征方程中,所述频率信号值F和所述温度信号值T均为已知, 要求出所述非电学量的值,还需要确定所述高阶非线性特征方程的系数Al〜A5、B1〜B5、 Cl 〜C5、D1 〜D5 禾口El 〜E5。 [0060] wherein the high-order nonlinear equations, the frequency F and the signal value of the signal value of the temperature T are known, the required value of the non-electrical quantity, but also need to determine the high-order nonlinear Al~A5 coefficients of the characteristic equation, B1~B5, Cl ~C5, D1 ~D5 Wo port El ~E5.

[0061] 参照图2,为本发明实施例一的高阶非线性特征方程系数的确定方法。 [0061] Referring to FIG 2, a method for determining the equation of higher order nonlinear coefficient of the features of an embodiment of the present invention. [0062] 该方法包括: [0062] the method comprising:

[0063] 采集多个已知非电学量、多个温度信号值和多个由非电学量经电容信号值转换而来的频率信号值; [0063] collecting a plurality of known non-electrical quantity, a plurality of temperature values ​​and a plurality of frequency signals from the signal values ​​via the non-electrical quantity converted from the capacitance value of the signal;

[0064] 将所述已知非电学量、温度信号值和频率信号值输入所述非电学量与频率信号值、温度信号值之间的含有待定系数的高阶非线性特征方程 [0064] The characteristic equation of higher order nonlinear containing undetermined coefficients between the known non-electrical quantity, temperature signal value and a frequency value of the input signal frequency of the non-electrical quantity signal value, the value of the temperature signal

[0065] Y = F4* (A1*T4+A2*T3+A3*T2+A4*T+A5) + [0065] Y = F4 * (A1 * T4 + A2 * T3 + A3 * T2 + A4 * T + A5) +

[0066] F3 氺(B1*T4+B2*T3+B3*T2+B4*T+B5) + [0066] F3 Shui (B1 * T4 + B2 * T3 + B3 * T2 + B4 * T + B5) +

[0067] F2* (C1*T4+C2*T3+C3*T2+C4*T+C5) + [0067] F2 * (C1 * T4 + C2 * T3 + C3 * T2 + C4 * T + C5) +

[0068] F 氺(Dl 氺T4+D2 氺T3+D3 氺T2+D4 氺T+D5) + [0068] F Shui (T4 + D2 Dl Shui Shui Shui T3 + D3 T2 + D4 Shui T + D5) +

[0069] (E1*T4+E2*T3+E3*T2+E4*T+E5) [0069] (E1 * T4 + E2 * T3 + E3 * T2 + E4 * T + E5)

[0070] 并利用高阶非线性拟合算法计算出所述高阶非线性特征方程的系数; [0070] and the high-order nonlinear coefficients are calculated using a characteristic equation of higher order nonlinear fitting algorithm;

[0071] 其中,Y为所述非电学量的计算值,F为所述频率信号值,T为所述温度信号值, Al〜A5、B 1〜B5、Cl〜C5、Dl〜D5和El〜E5为所述高阶非线性特征方程的系数。 [0071] wherein, Y is the calculated value of the non-electrical quantity, F is the frequency of the signal value, T is the temperature signal value, Al~A5, B 1~B5, Cl~C5, Dl~D5 and El ~E5 higher order nonlinear coefficient of the characteristic equation.

[0072] 本实施例所述的系统能够将非电学量变换为频率信号值,并采集温度信号值,将所述频率信号值和温度信号值输入已经确定系数的所述高阶非线性特征方程,计算出所述非电学量。 [0072] The system of the present embodiment described in the non-electrical quantity can be converted into a frequency signal value and the value of collecting temperature signals, said frequency signal and the temperature signal value of the input value has been determined that the high order nonlinear coefficients in the characteristic equation , calculating the non-electrical quantity. 由于本发明采用的是高阶非线性拟合算法,不用进行分段操作,能够降低成本, 且精度较高。 Since the present invention uses a higher order nonlinear fitting algorithm, without performing segmentation operation cost can be reduced, and high precision.

[0073] 参照图3,为本发明实施例二的一种非电学量测定系统。 [0073] Referring to FIG 3, a non-electrical quantity measurement system according to a second embodiment of the present invention. 如图3所示,本实施例所述的一种非电学量测定系统与实施例一所述的系统的区别在于,还包括数字接口模块105, 所述频率转换模块为RC振荡电路102。 As shown in FIG distinction, a non-electrical quantity measurement system according to the present embodiment and the embodiment of a system according to Example 3, further comprising a digital interface module 105, the frequency transform module 102 is an RC oscillator circuit.

[0074] 除此之外,本实施例所述系统与实施例一所述系统相同。 [0074] In addition, the system of the present embodiment same as the embodiment of a system embodiment.

[0075] 所述电容传感器模块101采集非电学量,并转换为电容信号值输出给RC振荡电路102,所述RC振荡电路102将所述电容信号值转换为频率信号值并输出给所述MCU模块104,所述温度采集模块103采集温度信号值,并将得到的温度信号值输出给所述MCU模块104。 [0075] The non-electrical quantity acquisition capacitor 101, and is converted to a capacitance value of the output signal to the RC oscillation circuit 102, the RC oscillator circuit 102 converts a signal value of the capacitance sensor module and outputs a frequency signal value to the MCU module 104, a temperature collection value temperature signal acquisition module 103, and the output value of the temperature signal obtained to the MCU module 104. 所述MCU模块104在计算出所述非电学量的数值后,通过数字接口模块105输出所述非电学量的数值。 The MCU module 104 After calculating the value of the non-electrical quantity, the output value of the non-electrical quantity module 105 through the digital interface.

[0076] 参照图4,为本发明实施例三的一种非电学量测定系统。 [0076] Referring to Figure 4, a non-oriented electrical quantity measurement system according to a third embodiment of the invention.

[0077] 如图4所示,本实施例所述的一种非电学量测定系统与实施例二所述的系统的区别在于,所述数字接口模块为SPI模块105。 [0077] As shown in FIG. 4, a non-electrical quantity measurement system according to embodiments of the present embodiment differs from the system of Example II in that embodiment, the digital SPI interface module to module 105. 所述非电学量的数值通过所述SPI模块105输 The value of the non-electrical quantity SPI module 105 through input

出ο The ο

[0078] 除此之外,本实施例所述系统与实施例二所述系统相同。 [0078] In addition, the embodiment of the system according to the present embodiment same as the embodiment two system.

[0079] 参照图5,为本发明实施例四的一种非电学量测定方法。 [0079] Referring to FIG 5, a non-oriented electrical quantity measuring method according to a fourth embodiment of the invention.

[0080] 如图5所示,本实施例所述的方法包括: [0080] As shown in FIG 5, the method according to the present embodiment comprises:

[0081] 采集多个已知非电学量、多个温度信号值和多个由非电学量经电容信号值转换而来的频率信号值; [0081] collecting a plurality of known non-electrical quantity, a plurality of temperature values ​​and a plurality of frequency signals from the signal values ​​via the non-electrical quantity converted from the capacitance value of the signal;

[0082] 将所述已知非电学量、温度信号值和频率信号值输入所检测的非电学量与频率信号值、温度信号值之间的含有待定系数的高阶非线性特征方程 [0082] The characteristic equation of higher order nonlinear containing undetermined coefficient between the non-electrical quantity known non-electrical quantity, temperature signal value and a frequency value of the input signal to the frequency of the detected signal, temperature signal value

[0083] Y = F4* (A1*T4+A2*T3+A3*T2+A4*T+A5) + [0083] Y = F4 * (A1 * T4 + A2 * T3 + A3 * T2 + A4 * T + A5) +

[0084] F3 氺(B1*T4+B2*T3+B3*T2+B4*T+B5) +[0085] F2* (C1*T4+C2*T3+C3*T2+C4*T+C5) + [0084] F3 Shui (B1 * T4 + B2 * T3 + B3 * T2 + B4 * T + B5) + [0085] F2 * (C1 * T4 + C2 * T3 + C3 * T2 + C4 * T + C5) +

[0086] F 氺(Dl 氺T4+D2 氺T3+D3 氺T2+D4 氺T+D5) + [0086] F Shui (T4 + D2 Dl Shui Shui Shui T3 + D3 T2 + D4 Shui T + D5) +

[0087] (E1*T4+E2*T3+E3*T2+E4*T+E5) [0087] (E1 * T4 + E2 * T3 + E3 * T2 + E4 * T + E5)

[0088] 其中,Y为所述非电学量的计算值,F为所述频率信号值,T为所述温度信号值,其中,Al〜A5、Bl〜B5、C1〜C5、D1〜D5和El〜E5为所述高阶非线性特征方程的系数。 [0088] wherein, Y is the calculated value of the non-electrical quantity, F is the frequency of the signal value, T is the temperature signal value, wherein, Al~A5, Bl~B5, C1~C5, D1~D5 and El~E5 higher order nonlinear coefficient of the characteristic equation.

[0089] 在实际应用中,为了提高检测的精度,所述高阶非线性特征方程还可以增加频率F 的幂的多项式,例如,所述高阶非线性特征方程可以为 [0089] In practice, in order to improve the accuracy of detection, the high-order nonlinearity equations may also increase the frequency of power polynomial F, for example, the high-order nonlinearity equations may be

[0090] Y = F5* (G1*T4+G2*T3+G3*T2+G4*T+G5) + [0091 ] F4* (A1*T4+A2*T3+A3*T2+A4*T+A5) + [0090] Y = F5 * (G1 * T4 + G2 * T3 + G3 * T2 + G4 * T + G5) + [0091] F4 * (A1 * T4 + A2 * T3 + A3 * T2 + A4 * T + A5 ) +

[0092] F3 氺(B1*T4+B2*T3+B3*T2+B4*T+B5) + [0092] F3 Shui (B1 * T4 + B2 * T3 + B3 * T2 + B4 * T + B5) +

[0093] F2* (C1*T4+C2*T3+C3*T2+C4*T+C5) + [0093] F2 * (C1 * T4 + C2 * T3 + C3 * T2 + C4 * T + C5) +

[0094] F 氺(Dl 氺T4+D2 氺T3+D3 氺T2+D4 氺T+D5) + [0094] F Shui (T4 + D2 Dl Shui Shui Shui T3 + D3 T2 + D4 Shui T + D5) +

[0095] (E1*T4+E2*T3+E3*T2+E4*T+E5) [0095] (E1 * T4 + E2 * T3 + E3 * T2 + E4 * T + E5)

[0096] 其中,Y为所述非电学量的计算值,F为所述频率信号值,T为所述温度信号值,其中,Al〜A5、B1〜B5、C1〜C5、D1〜D5、E1〜E5和Gl〜G5为所述高阶非线性特征方程的系数。 [0096] wherein, Y is the calculated value of the non-electrical quantity, F is the frequency of the signal value, T is the temperature signal value, wherein, Al~A5, B1~B5, C1~C5, D1~D5, E1~E5 Gl~G5 and higher order nonlinear coefficient of the characteristic equation.

[0097] 利用高阶非线性拟合算法计算出高阶非线性特征方程的系数; [0097] The higher order coefficients are calculated using non-linear characteristic equation of higher order nonlinear fitting algorithm;

[0098] 采集未知非电学量并将所述非电学量转换为电容信号值,再将所述电容信号值转换为频率信号值,采集温度信号值。 [0098] Acquisition unknown and non-electrical quantity of the non-electrical quantity signal value is converted to a capacitance, then the capacitance value of the signal value is converted into a frequency signal, temperature signal acquisition value.

[0099] 将所述温度信号值和频率信号值代入已确定系数的所述高阶非线性特征方程并计算出所述非电学量的值。 [0099] The value of the temperature signal and the frequency signal the determined values ​​into the high-order nonlinear coefficients in the characteristic equation and calculate the value of the non-electrical quantity.

[0100] 优选的,本方法中,所述采集多个已知非电学量、多个温度信号值和多个由所述已知非电学量经电容信号转换而来的频率信号值为采集不低于10万个已知非电学量、不低于10万个温度信号值和不低于10万个由所述已知非电学量经电容信号转换而来的频率信号值。 [0100] Preferably, the present method, the collected plurality of known non-electrical quantity, a plurality of temperature signals from said plurality of values ​​and a known amount of non-electrical signal is frequency-converted from the capacitance signal is not acquired less than 100,000 known non-electrical quantity, a temperature of not less than 100,000 and the signal value of not less than 100,000 by the amount of non-electrical known frequency signal value converted from a signal via a capacitor.

[0101] 优选的,本方法中,所述采集多个温度信号值的过程包括:按照预设规律改变环境温度,分别采集不同环境温度下的温度信号值。 Process [0101] Preferably, the present method, the acquisition of signal values ​​comprises a plurality of temperature: ambient temperature changes according to a preset rule, a temperature signal values ​​were collected at different ambient temperatures. 具体的,所述预设规律为将环境温度从室温缓慢变化到零下40°C,到零下40°C之后维持此温度两个小时,然后升温到85°C,到85°C之后维持此温度两个小时,然后降温到室温。 Specifically, the law is a predetermined change in ambient temperature slowly from room temperature to minus 40 ° C, maintaining this temperature for two hours then to minus 40 ° C, then warmed to 85 ° C, then maintained at that temperature to 85 ° C two hours, then cooled to room temperature.

[0102] 优选的,本方法中,所述多个已知非电学量在数值上均勻分布;所述多个温度信号值在被采集的时间上均勻分布。 [0102] Preferably, the method, the plurality of known non-uniform distribution of electrical quantities numerically; temperature of the plurality of signal values ​​to be evenly distributed over the collection time.

[0103] 优选的,本方法中,所述多个已知非电学量为整数;所述多个温度信号值为整数。 [0103] Preferably, the method, the plurality of known non-electrical quantity is an integer; integer value of the plurality of temperature signals.

[0104] 对所公开的实施例的上述说明,使本领域专业技术人员能够实现或使用本发明。 [0104] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. 对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。 Various modifications to these professionals skilled in the art of the present embodiments will be apparent, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. 因此,本发明将不会被限制于本文所示的这些实施例,而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。 Accordingly, the present invention will not be limited to the embodiments shown herein but is to be accorded herein consistent with the principles and novel features disclosed widest scope.

Claims (11)

  1. 一种非电学量测定系统,其特征在于,包括:采集非电学量并转换为电容信号值的电容传感器;连接所述电容传感器、将所述电容信号值转换为频率信号值的频率转换模块;采集温度信号值的温度采集模块;连接所述频率转换模块和温度采集模块的微控制单元MCU模块,该MCU模块依据预设的高阶非线性特征方程处理所述频率信号值和所述温度信号值,得到所述非电学量的值。 A non-electrical quantity measuring system, comprising: non-electrical quantity collected and converted to a capacitance sensor capacitance signal values; connecting the capacitive sensor, converting the capacitance value of the frequency signal a frequency signal value conversion module; temperature signal acquisition module temperature collection value; connecting the frequency converter module and a temperature acquisition module module of microcontroller unit MCU, the MCU module according to a preset characteristic equation of higher order nonlinear processing said frequency signal and said temperature signal value value, obtain a value of the non-electrical quantity.
  2. 2.根据权利要求1所述的系统,其特征在于,所述预设的高阶非线性特征方程为Y = F4* (A1*T4+A2*T3+A3*T2+A4*T+A5) +F3* (B1*T4+B2*T3+B3*T2+B4*T+B5) + F2* (C1*T4+C2*T3+C3*T2+C4*T+C5) + F* (D1*T4+D2*T3+D3*T2+D4*T+D5) + (E1*T4+E2*T3+E3*T2+E4*T+E5),其中,Y为所述非电学量的计算值,F为所述频率信号值,T为所述温度信号值,Al〜 A5、Bl〜B5、Cl〜C5、Dl〜D5和El〜E5为所述高阶非线性特征方程的系数。 2. The system according to claim 1, wherein said predetermined characteristics of higher order nonlinear equation Y = F4 * (A1 * T4 + A2 * T3 + A3 * T2 + A4 * T + A5) + F3 * (B1 * T4 + B2 * T3 + B3 * T2 + B4 * T + B5) + F2 * (C1 * T4 + C2 * T3 + C3 * T2 + C4 * T + C5) + F * (D1 * T4 + D2 * T3 + D3 * T2 + D4 * T + D5) + (E1 * T4 + E2 * T3 + E3 * T2 + E4 * T + E5), wherein, Y is the calculated value of the non-electrical quantity, F is the frequency of the signal value, T is the temperature signal value, Al~ A5, Bl~B5, Cl~C5, Dl~D5 El~E5 and higher order nonlinear coefficient of the characteristic equation.
  3. 3.根据权利要求1所述的系统,其特征在于,所述频率转换模块为RC振荡电路。 3. System according to claim 1, wherein said frequency conversion module RC oscillator circuit.
  4. 4.根据权利要求1所述的系统,其特征在于,还包括:数字接口模块, 所述非电学量的计算值通过数字接口模块输出。 4. The system of claim 1, characterized in that, further comprising: a digital interface module, the non-electrical quantity calculation value output through the digital interface module.
  5. 5.根据权利要求4所述的系统,其特征在于,所述数字接口模块为串行外围设备接口SPI模块。 5. The system as claimed in claim 4, wherein said digital interface module for the serial peripheral interface SPI module.
  6. 6. 一种非电学量测定方法,其特征在于,包括:采集多个已知非电学量、多个温度信号值和多个由所述已知非电学量经电容信号转换而来的频率信号值;将所述已知非电学量、温度信号值和频率信号值输入所述非电学量与频率信号值、温度信号值之间的含有待定系数的高阶非线性特征方程并利用高阶非线性拟合算法计算出高阶非线性特征方程的待定系数;采集未知非电学量并将所述非电学量转换为电容信号值,再将所述电容信号值转换为频率信号值,采集温度信号值;将所述温度信号值和频率信号值代入已确定系数的所述高阶非线性特征方程并计算出所述未知非电学量的值。 A non-electrical quantity measuring method comprising: acquiring a plurality of non-frequency signals is known by the non-electrical quantity capacitance signal converted from electrical quantity, a plurality of temperature values ​​and a plurality of signals by the known value; characterized in containing high order nonlinear equations using undetermined coefficients between the known high-order non-electrical quantity, temperature signal value and a frequency value of the input signal frequency of the non-electrical quantity signal value, the value of the temperature signal linear fitting algorithm to calculate the undetermined coefficients of higher order nonlinear characteristic equation; unknown non-electrical quantity collected and the amount of non-electrical signal is converted to a capacitance value, then the capacitance value of the signal value is converted into a frequency signal, temperature signal acquisition value; the value of the temperature signal and the frequency signal values ​​into the determined coefficients of the characteristic equation of higher order nonlinear and calculated values ​​of the unknown non-electrical quantity.
  7. 7.根据权利要求6所述的方法,其特征在于,所述高阶非线性特征方程为Y = F4*(A1*T4+A2*T3+A3*T2+A4*T+A5) +F3* (B1*T4+B2*T3+B3*T2+B4*T+B5) + F2* (C1*T4+C2*T3+C3*T2+C4*T+C5) + F* (D1*T4+D2*T3+D3*T2+D4*T+D5) + (E1*T4+E2*T3+E3*T2+E4*T+E5)其中,Y为非电学量的计算值,F为所述频率信号值,T为所述温度信号值,Al〜A5、 Bl〜B5、Cl〜C5、Dl〜D5和El〜E5为所述高阶非线性特征方程的系数。 7. The method according to claim 6, characterized in that, wherein the high-order nonlinear equation Y = F4 * (A1 * T4 + A2 * T3 + A3 * T2 + A4 * T + A5) + F3 * (B1 * T4 + B2 * T3 + B3 * T2 + B4 * T + B5) + F2 * (C1 * T4 + C2 * T3 + C3 * T2 + C4 * T + C5) + F * (D1 * T4 + D2 * T3 + D3 * T2 + D4 * T + D5) + (E1 * T4 + E2 * T3 + E3 * T2 + E4 * T + E5) wherein, Y is a non-electrical quantities calculated value, F is the frequency of the signal value, T is the temperature signal value, Al~A5, Bl~B5, Cl~C5, Dl~D5 El~E5 and higher order nonlinear coefficient of the characteristic equation.
  8. 8.根据权利要求6所述的方法,其特征在于,所述采集多个已知非电学量、多个温度信号值和多个由所述已知非电学量经电容信号转换而来的频率信号值为采集不低于10万个已知非电学量、不低于10万个温度信号值和不低于10万个由所述已知非电学量经电容信号转换而来的频率信号值。 8. The method according to claim 6, wherein the plurality of known non-electrical quantity, a plurality of temperature values ​​and a plurality of signals by the amount of non-electrical known frequency signal converted from the capacitance after the collection acquisition signal value is not less than 100,000 known non-electrical quantity, a temperature of not less than 100,000 and not lower than the frequency of the signal value of the signal value of an amount of 100,000 is known from the non-electrical signal converted from the capacitance by .
  9. 9.根据权利要求6或8所述的方法,其特征在于,所述采集多个温度信号值的过程包括:按照预设规律改变环境温度,分别采集不同环境温度下的温度信号值。 9. The method of claim 6 or claim 8, wherein the temperature of said plurality of signal acquisition process values ​​include: changes in ambient temperature according to a predetermined rule, a temperature signal values ​​are acquired at different ambient temperatures.
  10. 10.根据权利要求6所述的方法,其特征在于,所述多个已知非电学量在数值上均勻分布;所述多个温度信号值在被采集的时间上均勻分布。 10. The method according to claim 6, wherein said plurality of known non-uniform distribution of electrical quantities in value; the temperature of the plurality of signal values ​​to be evenly distributed over the collection time.
  11. 11.根据权利要求6所述的方法,其特征在于,所述多个已知非电学量为整数;所述多个温度信号值为整数。 11. The method according to claim 6, wherein said plurality of known non-electrical quantity is an integer; integer value of the plurality of temperature signals.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102610996A (en) * 2012-01-19 2012-07-25 厦门优迅高速芯片有限公司 Method and device for rapidly calibrating luminous power

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5642301A (en) * 1994-01-25 1997-06-24 Rosemount Inc. Transmitter with improved compensation
US5848383A (en) * 1997-05-06 1998-12-08 Integrated Sensor Solutions System and method for precision compensation for the nonlinear offset and sensitivity variation of a sensor with temperature
US5902925A (en) * 1996-07-01 1999-05-11 Integrated Sensor Solutions System and method for high accuracy calibration of a sensor for offset and sensitivity variation with temperature
CN2554632Y (en) * 2002-06-19 2003-06-04 西安交通大学 Intelligence oil quality monitoring instrument
CN200986461Y (en) * 2006-07-28 2007-12-05 华南农业大学 Smart capacitive level meter
CN101171496A (en) * 2005-05-04 2008-04-30 Ami半导体股份有限公司 Providing nonlinear temperature compensation for sensing means by use of pade approximant function emulators
CN101344500A (en) * 2008-08-21 2009-01-14 窦祥增 Capacitor type grain and oil moisture tester

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5642301A (en) * 1994-01-25 1997-06-24 Rosemount Inc. Transmitter with improved compensation
US5902925A (en) * 1996-07-01 1999-05-11 Integrated Sensor Solutions System and method for high accuracy calibration of a sensor for offset and sensitivity variation with temperature
US5848383A (en) * 1997-05-06 1998-12-08 Integrated Sensor Solutions System and method for precision compensation for the nonlinear offset and sensitivity variation of a sensor with temperature
CN2554632Y (en) * 2002-06-19 2003-06-04 西安交通大学 Intelligence oil quality monitoring instrument
CN101171496A (en) * 2005-05-04 2008-04-30 Ami半导体股份有限公司 Providing nonlinear temperature compensation for sensing means by use of pade approximant function emulators
CN200986461Y (en) * 2006-07-28 2007-12-05 华南农业大学 Smart capacitive level meter
CN101344500A (en) * 2008-08-21 2009-01-14 窦祥增 Capacitor type grain and oil moisture tester

Cited By (2)

* Cited by examiner, † Cited by third party
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CN102610996A (en) * 2012-01-19 2012-07-25 厦门优迅高速芯片有限公司 Method and device for rapidly calibrating luminous power
CN102610996B (en) 2012-01-19 2014-05-14 厦门优迅高速芯片有限公司 Method and device for rapidly calibrating luminous power

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