Multi-slope integral type voltage analog-to-digital conversion system based on sectional control

Abstract

The invention provides a multi-slope integral type voltage analog-to-digital conversion system based on sectional control. The multi-slope integral type voltage analog-to-digital conversion system comprises an analog voltage input terminal, a sectional control terminal, a multi-slope integral terminal and a digital output terminal, the analog voltage input terminal is used for receiving an analog voltage signal to be converted; the sectional type control terminal is used for performing sectional processing on the analog voltage signal according to the sectional parameters; the multi-slope integral terminal is used for performing integral calculation processing on each segmented analog voltage signal according to different slopes; and the digital output terminal is used for sampling the analog voltage information subjected to the multi-slope integration processing to generate a digital signal, and outputting the digital signal. The method has the effect of improving the accuracy of multi-slope integral type voltage analog-to-digital conversion.

Description

Technical Field

[0001] The present invention relates to the technical field of voltage analog-to-digital conversion, and in particular to a multi-slope integral type voltage analog-to-digital conversion system based on segmented control. Background Art

[0002] Voltage analog-to-digital conversion systems are key components commonly used in electronic devices to convert analog voltage signals into digital representations. Multi-slope integration technology is a method of using different slopes for integration calculations in analog-to-digital conversion. Traditional integral analog-to-digital converters usually use fixed slopes for integration, which cannot meet the requirements of high precision and wide dynamic range. Multi-slope integration technology adapts to changes in different signal amplitudes by selecting appropriate slopes within different signal ranges.

[0003] Now many voltage analog-to-digital conversion systems have been developed. After a lot of searching and reference, we found that the voltage analog-to-digital conversion systems in the prior art are such as the voltage analog-to-digital conversion systems disclosed in publication numbers CN107612550A, CN102844960A, CN107276592A, EP3195478A1, US4748440A, and JP2018102117A. These voltage analog-to-digital conversion systems generally include: an input terminal, an analog-to-digital conversion terminal, and an output terminal; the input terminal is used to receive an analog voltage signal; the analog-to-digital conversion terminal is used to perform analog-to-digital conversion on the analog voltage signal; and the output terminal is used to output the converted digital voltage signal. Since the analog-to-digital conversion process of the above-mentioned voltage analog-to-digital conversion system is relatively simple, the adaptability of the analog-to-digital conversion process to the amplitude change of the analog voltage signal is reduced, resulting in the defect that the accuracy of the voltage analog-to-digital conversion of the voltage analog-to-digital conversion system is reduced. Summary of the invention

[0004] The purpose of the present invention is to propose a multi-slope integral type voltage analog-to-digital conversion system based on segmented control in view of the shortcomings of the above voltage analog-to-digital conversion system.

[0005] The present invention adopts the following technical solution:

[0006] A multi-slope integral voltage analog-to-digital conversion system based on segmented control, comprising an analog voltage input terminal, a segmented control terminal, a multi-slope integral terminal and a digital output terminal; the analog voltage input terminal is used to receive an analog voltage signal to be converted; the segmented control terminal is used to perform segmented processing on the analog voltage signal according to segmented parameters; the multi-slope integral terminal is used to perform integral calculation processing on each segmented analog voltage signal according to different slopes; the digital output terminal is used to sample the analog voltage information processed by the multi-slope integral to generate a digital signal, and output the digital signal for processing;

[0007] The segmented control terminal includes a segmented parameter determination module and a segmented processing module; the segmented parameter determination module is used to determine the segmented parameters according to the statistical characteristics and hardware characteristics of the analog voltage signal; the segmented processing module is used to perform segmented processing on the analog voltage signal according to the segmented parameters;

[0008] The multi-slope integration terminal includes a slope selection module, a slope switching module and an integral calculation module; the slope selection module is used to select a corresponding slope for each segment of the analog voltage signal; the slope switching module is used to switch the slope according to the segmentation and slope selection of the analog voltage signal during integration; the integral calculation module is used to perform integral calculation on the analog voltage signal according to the slope selection;

[0009] The digital output terminal includes a digital signal sampling module, a digital signal processing module and a digital signal output module; the digital signal sampling module is used to sample the analog voltage information after multi-slope integration processing to generate a digital signal; the digital signal processing module is used to output the digital signal for processing; the digital signal output module is used to output and display the processed digital signal.

[0010] Optionally, the segmentation parameter determination module includes a statistical feature acquisition submodule, a hardware feature acquisition submodule and a segmentation parameter calculation submodule; the statistical feature acquisition submodule is used to acquire statistical features from the input analog voltage signal; the statistical features include amplitude information of the analog voltage signal; the hardware feature acquisition submodule is used to acquire hardware features of the system hardware; the hardware features include signal dynamic range requirement information, hardware design information, hardware cost information and hardware response requirement information; the segmentation parameter calculation submodule is used to calculate corresponding segmentation parameters based on the statistical features and hardware features.

[0011] Optionally, the segmentation parameter calculation submodule includes a calculation factor extraction unit and a segmentation parameter calculation unit; the calculation factor extraction unit is used to extract the calculation factor from the amplitude information of the analog voltage signal, the signal dynamic range requirement information, the hardware design information, the hardware cost information and the hardware response requirement information; the segmentation parameter calculation unit is used to calculate the corresponding segmentation parameter according to the calculation factor;

[0012] When the segment parameter calculation unit calculates, the following formula is satisfied:

[0013] H=h(V max &V min )+G(t)*[f1(a)*f2(b)+k*c];

[0014] Wherein, H represents the segmentation parameter, that is, the number of segments for segmentation processing of the analog voltage signal; h(V max &Vmin ) represents a reference segment number selection function based on the maximum and minimum values ​​of the analog voltage signal; V max Indicates the maximum value of the analog voltage signal; V min represents the minimum value of the analog voltage signal; G(t) represents the sign selection function based on the hardware response requirement information; t represents the hardware response time value in the hardware response requirement information; f1(a) represents the value selection function based on the signal dynamic range requirement information; a represents the signal dynamic range factor in the signal dynamic range requirement information; f2(b) represents the value selection function based on the hardware cost information; b represents the hardware cost factor in the hardware cost information; c represents the storage space factor in the hardware design information, that is, the storage capacity value in the hardware design information; k represents the conversion coefficient, which is set by the administrator based on experience;

[0015]

[0016] Where d1 represents the segment base value, which is set by the administrator based on experience; V ref1 and V ref2 They represent the first range comparison threshold and the second range comparison threshold respectively, both of which are set by the administrator based on experience;

[0017]

[0018]

[0019] a=v max -v min ;

[0020]

[0021] b = B1-B2;

[0022] Wherein, 300ms means 300 milliseconds; β means the signal dynamic range reference coefficient, which is set by the administrator based on experience; Δ1 means the first difference comparison threshold, which is set by the administrator based on experience; v max Indicates the maximum value of the system range in the signal dynamic range requirement information; v min It represents the minimum range value of the system in the signal dynamic range requirement information; γ represents the hardware cost benchmark value, which is set by the administrator based on experience; Δ2 represents the second difference comparison threshold, which is set by the administrator based on experience; B1 represents the finished product cost value of the system; B2 represents the budget cost value of the system.

[0023] Optionally, the slope switching module includes a slope switching point acquisition submodule, a slope switching point calibration submodule and a slope switching submodule; the slope switching point acquisition submodule is used to acquire the segmentation points of two adjacent segments in the analog voltage signal as the slope switching points; the slope switching point calibration submodule is used to calibrate the slope switching points according to the corresponding segments of the analog voltage signal; the slope switching submodule is used to perform slope switching according to the segmentation of the analog voltage signal, the slope selection and the calibrated slope switching points during integration;

[0024] When the slope switching point calibration submodule is working, the following formula is satisfied:

[0025]

[0026]

[0027] Among them, x ′ represents the abscissa of the slope switching point after calibration; the ordinate of the slope switching point after calibration is the ordinate value corresponding to the abscissa after calibration in the analog voltage signal curve diagram; x represents the abscissa of the slope switching point before calibration, i.e., the abscissa of the end point of the previous segment close to the next segment in two adjacent segments; represents a coefficient selection function based on the aspect ratio of a subsequent segment, wherein the subsequent segment refers to the segment to be subjected to integral calculation; It indicates the ratio of the vertical and horizontal ranges of the next segment; ΔY indicates the vertical coordinate range value of the next segment; ΔX indicates the horizontal coordinate range value of the next segment; Δ3 indicates the reference calibration value, i.e.: the reference forward shift value of the horizontal coordinate of the slope switching point, which is set by the administrator based on experience; φ1, φ2 and φ3 respectively indicate different ratio thresholds, which are all set by the administrator based on experience.

[0028] A multi-slope integral type voltage analog-to-digital conversion method based on segmented control is applied to a multi-slope integral type voltage analog-to-digital conversion system based on segmented control as described above, and the multi-slope integral type voltage analog-to-digital conversion method includes:

[0029] S1, receiving an analog voltage signal to be converted;

[0030] S2, processing the analog voltage signal in segments according to the segmentation parameters;

[0031] S3, performing integration calculation processing on each segmented analog voltage signal according to different slopes;

[0032] S4, sampling the analog voltage information processed by the multi-slope integration to generate a digital signal, and outputting the digital signal for processing.

[0033] The beneficial effects achieved by the present invention are:

[0034] 1. The setting of analog voltage input terminal, segmented control terminal, multi-slope integration terminal and digital output terminal is conducive to enriching the analog-to-digital conversion process through segmented control and multi-slope integration, making the system more suitable for processing analog voltage signals, selecting a slope with better adaptability for analog-to-digital conversion, and improving the accuracy of the system's analog-to-digital conversion;

[0035] 2. The setting of the segment parameter determination module and the segment processing module is conducive to improving the accuracy and determination efficiency of the segment parameters, thereby improving the accuracy of the system analog-to-digital conversion;

[0036] 3. The setting of the slope selection module, the slope switching module and the integral calculation module is conducive to improving the accuracy of slope selection, slope switching and integral calculation, thereby improving the accuracy of the system analog-to-digital conversion;

[0037] 4. The setting of digital signal sampling module, digital signal processing module and digital signal output module is conducive to improving the accuracy and efficiency of digital signal processing, thereby improving the accuracy of system analog-to-digital conversion;

[0038] 5. The setting of the statistical feature acquisition submodule, the hardware feature acquisition submodule and the segmentation parameter calculation submodule is conducive to further improving the accuracy of the segmentation parameters through statistical features and hardware features, thereby further improving the accuracy of the system analog-to-digital conversion;

[0039] 6. The setting of the calculation factor extraction unit and the segment parameter calculation unit in conjunction with the segment parameter calculation algorithm is conducive to further improving the accuracy and adaptability of the segment parameters, thereby greatly improving the accuracy of the system analog-to-digital conversion;

[0040] 7. The settings of the slope switching point acquisition submodule, the slope switching point calibration submodule and the slope switching submodule, together with the slope switching point horizontal coordinate calibration algorithm, are conducive to further improving the accuracy of the slope switching point, making the selected slope more appropriate and the use process more accurate, thereby greatly improving the accuracy of the system analog-to-digital conversion;

[0041] 8. The setting of the segmented reference value calculation unit and the segmented basic value calculation algorithm are conducive to improving the accuracy and adaptability of the segmented reference value, and further improving the accuracy of the segmented parameters, thereby greatly improving the accuracy of the system analog-to-digital conversion.

[0042] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0044] Figure 2 It is a structural diagram of the segment parameter confirmation module in the present invention;

[0045] Figure 3 is a structural schematic diagram of a slope switching module in the present invention;

[0046] Figure 4 A schematic diagram of a method flow of a multi-slope integral voltage analog-to-digital conversion method based on segmented control in the present invention;

[0047] Figure 5 It is a structural schematic diagram of a segmentation parameter calculation submodule in another embodiment of the present invention;

[0048] Figure 6 It is a schematic flow chart of a method for segmentally identifying a curve graph of an analog voltage signal in another embodiment of the present invention. DETAILED DESCRIPTION

[0049] The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0050] Embodiment 1: This embodiment provides a multi-slope integral voltage analog-to-digital conversion system based on segmented control. Figure 1 As shown, a multi-slope integral type voltage analog-to-digital conversion system based on segmented control includes an analog voltage input terminal, a segmented control terminal, a multi-slope integral terminal and a digital output terminal; the analog voltage input terminal is used to receive an analog voltage signal to be converted; the segmented control terminal is used to perform segmented processing on the analog voltage signal according to segmented parameters; the multi-slope integral terminal is used to perform integral calculation processing on each segmented analog voltage signal according to different slopes; the digital output terminal is used to sample the analog voltage information processed by the multi-slope integral to generate a digital signal, and output the digital signal for processing;

[0051] The segmented control terminal includes a segmented parameter determination module and a segmented processing module; the segmented parameter determination module is used to determine the segmented parameters according to the statistical characteristics and hardware characteristics of the analog voltage signal; the segmented processing module is used to perform segmented processing on the analog voltage signal according to the segmented parameters;

[0052] The multi-slope integration terminal includes a slope selection module, a slope switching module and an integral calculation module; the slope selection module is used to select a corresponding slope for each segment of the analog voltage signal; the slope switching module is used to switch the slope according to the segmentation and slope selection of the analog voltage signal during integration; the integral calculation module is used to perform integral calculation on the analog voltage signal according to the slope selection;

[0053] The digital output terminal includes a digital signal sampling module, a digital signal processing module and a digital signal output module; the digital signal sampling module is used to sample the analog voltage information after multi-slope integration processing to generate a digital signal; the digital signal processing module is used to output the digital signal for processing; the digital signal output module is used to output and display the processed digital signal.

[0054] Optional, combined Figure 2 As shown, the segmentation parameter determination module includes a statistical feature acquisition submodule, a hardware feature acquisition submodule and a segmentation parameter calculation submodule; the statistical feature acquisition submodule is used to acquire statistical features from the input analog voltage signal; the statistical features include amplitude information of the analog voltage signal; the hardware feature acquisition submodule is used to acquire hardware features of the system hardware; the hardware features include signal dynamic range requirement information, hardware design information, hardware cost information and hardware response requirement information; the segmentation parameter calculation submodule is used to calculate the corresponding segmentation parameters according to the statistical features and hardware features.

[0055] Optionally, the segmentation parameter calculation submodule includes a calculation factor extraction unit and a segmentation parameter calculation unit; the calculation factor extraction unit is used to extract the calculation factor from the amplitude information of the analog voltage signal, the signal dynamic range requirement information, the hardware design information, the hardware cost information and the hardware response requirement information; the segmentation parameter calculation unit is used to calculate the corresponding segmentation parameter according to the calculation factor;

[0056] When the segment parameter calculation unit calculates, the following formula is satisfied:

[0057] H=h(V max &V min )+G(t)*[f1(a)*f2(b)+k*c];

[0058] Wherein, H represents the segmentation parameter, that is, the number of segments for segmentation processing of the analog voltage signal; h(V max &V min ) represents a reference segment number selection function based on the maximum and minimum values ​​of the analog voltage signal; V max Indicates the maximum value of the analog voltage signal; V minrepresents the minimum value of the analog voltage signal; G(t) represents the sign selection function based on the hardware response requirement information; t represents the hardware response time value in the hardware response requirement information; f1(a) represents the value selection function based on the signal dynamic range requirement information; a represents the signal dynamic range factor in the signal dynamic range requirement information; f2(b) represents the value selection function based on the hardware cost information; b represents the hardware cost factor in the hardware cost information; c represents the storage space factor in the hardware design information, that is, the storage capacity value in the hardware design information; k represents the conversion coefficient, which is set by the administrator based on experience; [f1(a)*f2(b)+k*c] represents taking an integer for the result of f1(a)*f2(b)+k*c;

[0059]

[0060] Where d1 represents the segment base value, which is set by the administrator based on experience; V ref1 and V ref2 They represent the first range comparison threshold and the second range comparison threshold respectively, both of which are set by the administrator based on experience;

[0061]

[0062]

[0063] a=v max -v min ;

[0064]

[0065] b = B1-B2;

[0066] Wherein, 300ms means 300 milliseconds; β means the signal dynamic range reference coefficient, which is set by the administrator based on experience; Δ1 means the first difference comparison threshold, which is set by the administrator based on experience; v max Indicates the maximum value of the system range in the signal dynamic range requirement information; v min It represents the minimum range value of the system in the signal dynamic range requirement information; γ represents the hardware cost benchmark value, which is set by the administrator based on experience; Δ2 represents the second difference comparison threshold, which is set by the administrator based on experience; B1 represents the finished product cost value of the system; B2 represents the budget cost value of the system.

[0067] Optional, combined Figure 3As shown, the slope switching module includes a slope switching point acquisition submodule, a slope switching point calibration submodule and a slope switching submodule; the slope switching point acquisition submodule is used to acquire the segment division points of two adjacent segments in the analog voltage signal as the slope switching point; the slope switching point calibration submodule is used to calibrate the slope switching point according to the corresponding segment of the analog voltage signal; the slope switching submodule is used to perform slope switching according to the segmentation of the analog voltage signal, the slope selection and the calibrated slope switching point during integration;

[0068] When the slope switching point calibration submodule is working, the following formula is satisfied:

[0069]

[0070]

[0071] Among them, x ′ represents the abscissa of the slope switching point after calibration; the ordinate of the slope switching point after calibration is the ordinate value corresponding to the abscissa after calibration in the analog voltage signal curve diagram; x represents the abscissa of the slope switching point before calibration, i.e., the abscissa of the end point of the previous segment close to the next segment in two adjacent segments; represents a coefficient selection function based on the aspect ratio of a subsequent segment, wherein the subsequent segment refers to the segment to be subjected to integral calculation;

[0072] It indicates the ratio of the vertical and horizontal ranges of the next segment; ΔY indicates the vertical coordinate range value of the next segment; ΔX indicates the horizontal coordinate range value of the next segment; Δ3 indicates the reference calibration value, i.e.: the reference forward shift value of the horizontal coordinate of the slope switching point, which is set by the administrator based on experience; φ1, φ2 and φ3 respectively indicate different ratio thresholds, which are all set by the administrator based on experience.

[0073] A multi-slope integral type voltage analog-to-digital conversion method based on segmented control is applied to a multi-slope integral type voltage analog-to-digital conversion system based on segmented control as described above, combined with Figure 4 As shown, the multi-slope integral voltage analog-to-digital conversion method includes:

[0074] S1, receiving an analog voltage signal to be converted;

[0075] S2, processing the analog voltage signal in segments according to the segmentation parameters;

[0076] S3, performing integration calculation processing on each segmented analog voltage signal according to different slopes;

[0077] S4, sampling the analog voltage information processed by the multi-slope integration to generate a digital signal, and outputting the digital signal for processing.

[0078] Embodiment 2: This embodiment includes all the contents of embodiment 1, and provides a multi-slope integral voltage analog-to-digital conversion system based on segmented control, combined with Figure 5 As shown, the segment parameter calculation submodule also includes a segment reference value calculation unit; the segment reference value calculation unit is used to calculate the segment reference value according to the administrator's requirements and the curve chart of the analog voltage signal.

[0079] When the segment reference value calculation unit calculates, the following formula is satisfied:

[0080]

[0081] Wherein, l1 and l2 represent the segment number value required by the administrator before the conversion and the segment number value recognized by the system according to the curve graph of the analog voltage signal, respectively; the segment number value recognized by the system according to the curve graph of the analog voltage signal means that the system directly obtains the corresponding segment number value by segmentally recognizing the curve graph of the analog voltage signal through image processing technology; Express The result is an integer.

[0082] It should be noted that Make H>0.

[0083] The system uses image processing technology to segment the curve graph of the analog voltage signal. Figure 6 As shown, the steps are as follows:

[0084] A1, Image acquisition and preprocessing, the system first acquires the curve image of the analog voltage signal, and then performs preprocessing to optimize the image quality.

[0085] Specifically, it can be but not limited to connecting the signal to a data acquisition device, such as an oscilloscope or a data recorder. The acquired image can be but not limited to a two-dimensional grayscale image or a color image. Preprocessing includes image enhancement, denoising, and smoothing operations to reduce interference and noise in the image and improve the accuracy of segment recognition.

[0086] A2, edge detection and segmentation, the system uses image processing technology to perform edge detection, and based on the results of edge detection, the system performs curve image segmentation.

[0087] Specifically, edge detection identifies edge features in the curve image, that is, the rising and falling edges of the signal. During segmentation, the system divides the curve image into multiple different sections, each of which corresponds to a part of the signal.

[0088] A3, paragraph number calculation. Based on the segmented paragraphs, the system calculates the corresponding segment number.

[0089] A4, result output, the system outputs the calculated segment number.

[0090] The contents disclosed above are only preferred feasible embodiments of the present invention, and do not limit the protection scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention description and drawings are included in the protection scope of the present invention. In addition, the elements therein can be updated as technology develops.

Claims

1. A multi-slope integral voltage analog-to-digital conversion system based on segmented control, characterized in that: It includes an analog voltage input terminal, a segmented control terminal, a multi-slope integration terminal and a digital output terminal; the analog voltage input terminal is used to receive an analog voltage signal to be converted; the segmented control terminal is used to perform segmented processing on the analog voltage signal according to segmentation parameters; the multi-slope integration terminal is used to perform integration calculation processing on each segmented analog voltage signal according to different slopes; The digital output terminal is used to sample the analog voltage information processed by the multi-slope integration to generate a digital signal, and output the digital signal for processing; The segmented control terminal includes a segmented parameter determination module and a segmented processing module; the segmented parameter determination module is used to determine the segmented parameters according to the statistical characteristics and hardware characteristics of the analog voltage signal; the segmented processing module is used to perform segmented processing on the analog voltage signal according to the segmented parameters; The multi-slope integration terminal includes a slope selection module, a slope switching module and an integral calculation module; the slope selection module is used to select a corresponding slope for each segment of the analog voltage signal; the slope switching module is used to switch the slope according to the segmentation and slope selection of the analog voltage signal during integration; the integral calculation module is used to perform integral calculation on the analog voltage signal according to the slope selection; The digital output terminal includes a digital signal sampling module, a digital signal processing module and a digital signal output module; the digital signal sampling module is used to sample the analog voltage information after multi-slope integration processing to generate a digital signal; the digital signal processing module is used to output the digital signal for processing; the digital signal output module is used to output and display the processed digital signal.

2. A multi-slope integral voltage analog-to-digital conversion system based on segmented control as claimed in claim 1, characterized in that: The segmentation parameter determination module includes a statistical feature acquisition submodule, a hardware feature acquisition submodule and a segmentation parameter calculation submodule; the statistical feature acquisition submodule is used to acquire statistical features from the input analog voltage signal; the statistical features include the amplitude information of the analog voltage signal; the hardware feature acquisition submodule is used to acquire hardware features of the system hardware; the hardware features include signal dynamic range requirement information, hardware design information, hardware cost information and hardware response requirement information; the segmentation parameter calculation submodule is used to calculate the corresponding segmentation parameters based on the statistical features and hardware features.

3. A multi-slope integral voltage analog-to-digital conversion system based on segmented control as claimed in claim 2, characterized in that: The segment parameter calculation submodule includes a calculation factor extraction unit and a segment parameter calculation unit; the calculation factor extraction unit is used to extract the calculation factor from the amplitude information of the analog voltage signal, the signal dynamic range requirement information, the hardware design information, the hardware cost information and the hardware response requirement information; the segment parameter calculation unit is used to calculate the corresponding segment parameter according to the calculation factor; When the segment parameter calculation unit calculates, the following formula is satisfied: H=h(V max &V min )+G(t)*[f1(a)*f2(b)+k*c]; Wherein, H represents the segmentation parameter, that is, the number of segments for segmentation processing of the analog voltage signal; h(V max &V min ) represents a reference segment number selection function based on the maximum and minimum values ​​of the analog voltage signal; V max Indicates the maximum value of the analog voltage signal; V min represents the minimum value of the analog voltage signal; G(t) represents the sign selection function based on the hardware response requirement information; t represents the hardware response time value in the hardware response requirement information; f1(a) represents the value selection function based on the signal dynamic range requirement information; a represents the signal dynamic range factor in the signal dynamic range requirement information; f2(b) represents the value selection function based on the hardware cost information; b represents the hardware cost factor in the hardware cost information; c represents the storage space factor in the hardware design information; k represents the conversion coefficient; Where d1 represents the segment base value; V ref1 and V ref2 represent the first range comparison threshold and the second range comparison threshold respectively; a=v max -v min ; b = B1-B2; Wherein, 300ms represents 300 milliseconds; β represents the signal dynamic range reference coefficient; Δ1 represents the first difference comparison threshold; v max Indicates the maximum value of the system range in the signal dynamic range requirement information; v min It represents the minimum range value of the system in the signal dynamic range requirement information; γ represents the hardware cost benchmark value; Δ2 represents the second difference comparison threshold; B1 represents the finished product cost value of the system; B2 represents the budget cost value of the system.

4. A multi-slope integral voltage analog-to-digital conversion system based on segmented control as claimed in claim 3, characterized in that: The slope switching module includes a slope switching point acquisition submodule, a slope switching point calibration submodule and a slope switching submodule; the slope switching point acquisition submodule is used to acquire the segmentation points of two adjacent segments in the analog voltage signal as the slope switching points; the slope switching point calibration submodule is used to calibrate the slope switching points according to the corresponding segments of the analog voltage signal; the slope switching submodule is used to perform slope switching according to the segmentation of the analog voltage signal, the slope selection and the calibrated slope switching points during integration; When the slope switching point calibration submodule is working, the following formula is satisfied: Among them, x ′ represents the abscissa of the slope switching point after calibration; the ordinate of the slope switching point after calibration is the ordinate value corresponding to the abscissa after calibration in the analog voltage signal curve diagram; x represents the abscissa of the slope switching point before calibration; represents a coefficient selection function based on the aspect ratio of a subsequent segment, wherein the subsequent segment refers to the segment to be subjected to integral calculation; It represents the ratio of the vertical and horizontal ranges of the next segment; ΔY represents the vertical coordinate range value of the next segment; ΔX represents the horizontal coordinate range value of the next segment; Δ3 represents the benchmark calibration value; φ1, φ2 and φ3 represent different ratio thresholds respectively.

5. A multi-slope integral type voltage analog-to-digital conversion method based on segmented control, applied to a multi-slope integral type voltage analog-to-digital conversion system based on segmented control as claimed in claim 4, characterized in that: The multi-slope integral type voltage analog-to-digital conversion method comprises: S1, receiving an analog voltage signal to be converted; S2, processing the analog voltage signal in segments according to the segmentation parameters; S3, performing integration calculation processing on each segmented analog voltage signal according to different slopes; S4, sampling the analog voltage information processed by the multi-slope integration to generate a digital signal, and outputting the digital signal for processing.

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