Method and system for calibrating surface power density of arcing sensor

Abstract

The invention discloses a method for calibrating the surface power density of an arcing sensor. The method comprises the following steps: forming a calculation expression for determining the ideal slope of a calibration curve of a sensor to be evaluated according to an optical power parameter, a real-time parameter to be measured and the area of an arcing optical lens; in the actual application process, according to the real-time parameter measurement value of the sensor to be evaluated, the ideal slope calculation formula is used for calculating the corresponding calibration slope, and therefore the spectral irradiance responsivity of the current sensor is obtained.

Description

Technical Field

[0001] The invention relates to the technical field of sensor calibration, and in particular to a calibration method and system for surface power density of an arcing sensor. Background Art

[0002] Good contact between the pantograph and the contact network is a prerequisite for the locomotive to have good current collection quality, and the arcing of the pantograph and the contact network is a direct manifestation of the quality of the contact of the pantograph and the contact network system. When the pantograph and the contact network arc frequently, it will cause electrical erosion of the pantograph slide plate, and in severe cases, it will even burn the contact network equipment, causing the substation to trip and threatening driving safety. Therefore, accurate detection of arcing is very important.

[0003] At present, arc detection methods are mainly based on the provisions of EN50317-2012. The research on arc detection devices started early, and the commonly used method is to use ultraviolet arc sensors for detection, because it can better avoid the interference of light and sunlight; infrared light, visible light, electromagnetic radiation and other arc detection methods are also used. However, at present, arc detection only counts the number of arcs, duration, arc rate and minimum power density of arcs, etc. There are also differences in the surface power density required for different standards and different distances, and the measurement of arc power density is not taken seriously.

[0004] In addition, the existing technology mainly calibrates traditional voltage-type arc sensors. Unlike traditional voltage-type arc sensors, for existing pulse-type or pulse-voltage dual-output arc sensors, this type of sensor reflects the number of arcs through the number of pulses, and reflects the strength of the arc through the density of pulses. There has been a lack of power density calibration methods for this type of arc sensor. Summary of the invention

[0005] The object of the present invention is to provide a solution capable of calibrating the surface power density of an arcing sensor of a single pulse output type or a pulse voltage dual output type.

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a calibration method for the surface power density of an arcing sensor, including: an ideal slope generation step, forming a calculation expression for determining the ideal slope of the calibration curve of the sensor to be evaluated based on the optical power parameter, the real-time parameter to be measured and the area of ​​the arcing optical lens; a sensor application step, in the actual application process, according to the real-time parameter measurement value of the sensor to be evaluated, using the ideal slope calculation formula, to calculate the corresponding calibration slope, so as to obtain the spectral irradiance responsiveness of the current sensor.

[0007] Preferably, the sensor to be evaluated is a single pulse output arcing sensor, wherein, in the sensor application step, the corresponding calibration slope is calculated according to the real-time frequency measurement value and the optical power measurement value of the sensor to be evaluated using the ideal slope calculation formula, so as to obtain the spectral irradiance responsiveness of the current sensor, wherein the real-time frequency measurement value is the mean value of the number of output pulses per unit time or the mean value of the inverse of the output pulse interval.

[0008] Preferably, in the ideal slope generating step, the ideal slope calculation formula is expressed by the following expression:

[0009]

[0010] Among them, R0 represents the spectral irradiance response parameter of the single pulse output arc sensor to be evaluated, f0 represents the real-time frequency measurement value of the single pulse output arc sensor to be evaluated, P0 represents the optical power of the single pulse output arc sensor to be evaluated, and S0 represents the arc optical lens area of ​​the single pulse output arc sensor to be evaluated.

[0011] Preferably, when the sensor to be evaluated is a pulse voltage dual-output arcing sensor, the calibration method also includes a preprocessing step, wherein the preprocessing step includes: measuring the first frequency, the second frequency and the voltage amplitude of the sensor to be evaluated in different bands, and obtaining the proportional coefficient that characterizes the corresponding relationship between frequency and voltage in different bands, wherein the sensor application step includes: according to the real-time voltage measurement value of the sensor to be evaluated, using the ideal slope calculation formula, calculating the corresponding calibration slope, so as to obtain the spectral irradiance responsiveness of the current sensor according to the calibration slope and the proportional coefficient in the corresponding band.

[0012] Preferably, the process of obtaining the proportional coefficient that characterizes the corresponding relationship between frequency and voltage in different bands includes: measuring the first frequency, the second frequency and the voltage amplitude of the sensor to be evaluated in different bands, and drawing dynamic curves of the first frequency, the second frequency and the voltage amplitude changing with the band, respectively, and preferably obtaining the optimal frequency parameter; and obtaining the proportional coefficient in the corresponding band according to the ratio of the frequency value of the optimal frequency parameter in different bands to the voltage amplitude.

[0013] Preferably, based on the similarity between the first frequency dynamic curve and the voltage amplitude dynamic curve, and the similarity between the second frequency dynamic curve and the voltage amplitude dynamic curve, by comparing the two similarities, the frequency type with higher similarity to the voltage amplitude dynamic curve is used as the optimal frequency parameter, wherein the first frequency is the mean value of the number of output pulses per unit time, and the second frequency is the mean value of the inverse of the output pulse interval per unit time.

[0014] Preferably, the ideal slope generating step includes: constructing a first spectral response expression for characterizing the spectral responsivity of the corresponding sensor according to the voltage parameter to be measured and the optical power parameter of the standard voltage sensor, and a second spectral response expression for characterizing the spectral responsivity of the corresponding sensor according to the voltage parameter to be measured and the optical power parameter of the dual-output arc sensor to be evaluated; converting the first spectral response expression and the second spectral response expression into a spectral response formula of the sensor to be tested based on the principle that the optical powers received by the dual-output arc sensor to be evaluated and the standard voltage sensor are consistent; and converting the spectral response formula of the sensor to be tested into the ideal slope calculation formula based on the arc optical lens area parameter of the current dual-output arc sensor to be evaluated.

[0015] Preferably, the first spectral response expression is:

[0016]

[0017] Wherein, λ represents the wavelength, R represents the spectral responsivity of the standard voltage sensor, V represents the voltage parameter of the standard voltage sensor, and P represents the optical power parameter of the standard voltage sensor. The second spectral response expression is:

[0018]

[0019] Among them, R x represents the spectral responsivity of the dual output arc sensor, V x Represents the voltage parameter of the dual output arc sensor, P x represents the optical power parameter of the dual-output arcing sensor, and the spectral response formula of the sensor to be tested is:

[0020]

[0021] Preferably, the ideal slope calculation formula is:

[0022]

[0023] Where λ is the wavelength, R E represents the spectral irradiance responsivity of the dual-output arc sensor, and S represents the arc optical lens area of ​​the dual-output arc sensor.

[0024] On the other hand, an embodiment of the present invention provides a calibration system for the surface power density of an arcing sensor, wherein the calibration system is used to implement the calibration method as described above, wherein the calibration system includes: a light transmitting module; an optical power measuring module; a real-time parameter measuring module of the sensor to be measured; and a computer, which is configured to calculate the corresponding calibration slope according to the real-time parameter measurement value of the sensor to be evaluated using an ideal slope calculation formula during the actual application of the sensor, thereby obtaining the spectral irradiance responsiveness of the current sensor, wherein the ideal slope calculation formula is a calculation expression for determining the ideal slope of the calibration curve of the sensor to be evaluated based on the optical power parameter, the real-time parameter to be measured and the area of ​​the arcing optical lens.

[0025] Compared with the prior art, one or more embodiments of the above scheme may have the following advantages or beneficial effects:

[0026] The present invention proposes a calibration method and system for the surface power density of an arcing sensor. The method and system can measure the surface power density of an arcing sensor while detecting the number and duration of arcing, which is equivalent to reprocessing and screening the traditional measurement results to achieve accurate detection of arcing, and can realize the calibration of the surface power density of a single pulse and / or pulse voltage dual output type arcing sensor.

[0027] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 A schematic diagram of the steps of a method for calibrating the surface power density of an arcing sensor according to an embodiment of the present application.

[0030] Figure 2 This is a schematic diagram of the steps of the first example of a method for calibrating the surface power density of an arcing sensor according to an embodiment of the present application.

[0031] Figure 3 This is a schematic diagram of the steps of the second example of the calibration method for the surface power density of the arcing sensor in an embodiment of the present application.

[0032] Figure 4This is an example diagram of the optimal frequency curve processing results of the second example in the calibration method for the surface power density of the arcing sensor in an embodiment of the present application.

[0033] Figure 5 It is a schematic diagram of the structure of a calibration system for the surface power density of an arcing sensor according to an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that as long as there is no conflict, the various embodiments of the present invention and the various features in the embodiments can be combined with each other, and the technical solutions formed are all within the protection scope of the present invention.

[0035] In addition, the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions. Also, although a logical sequence is shown in the flowchart, in some cases, the steps shown or described can be performed in a sequence different from that here.

[0036] The terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms "one", "one" and "item" used herein are also intended to include plural numbers. It should also be understood that the terms "include" and / or "comprise" used herein specify the existence of stated features, integers, steps, operations, units and / or components, without excluding the existence or addition of one or more other features, integers, steps, operations, units, components and / or combinations thereof.

[0037] Good contact between the pantograph and the contact network is a prerequisite for the locomotive to have good current collection quality, and the arcing of the pantograph and the contact network is a direct manifestation of the quality of the contact of the pantograph and the contact network system. When the pantograph and the contact network arc frequently, it will cause electrical erosion of the pantograph slide plate, and in severe cases, it will even burn the contact network equipment, causing the substation to trip and threatening driving safety. Therefore, accurate detection of arcing is very important.

[0038] At present, arc detection methods are mainly based on the provisions of EN50317-2012. The research on arc detection devices started early, and the commonly used method is to use ultraviolet arc sensors for detection, because it can better avoid the interference of light and sunlight; infrared light, visible light, electromagnetic radiation and other arc detection methods are also used. However, at present, arc detection only counts the number of arcs, duration, arc rate and minimum power density of arcs, etc. There are also differences in the surface power density required for different standards and different distances, and the measurement of arc power density is not taken seriously.

[0039] In addition, the existing technology mainly calibrates traditional voltage-type arc sensors. Unlike traditional voltage-type arc sensors, for existing pulse-type or pulse-voltage dual-output arc sensors, this type of sensor reflects the number of arcs through the number of pulses, and reflects the strength of the arc through the density of pulses. There has been a lack of power density calibration methods for this type of arc sensor.

[0040] In order to solve the technical problems in the above-mentioned background technology, the embodiment of the present application proposes a method and system for calibrating the surface power density of an arc sensor. The method and system obtain the corresponding relationship between the surface power density of a pulsed arc sensor and its output by digital sampling and comparison method, and verify the ratio relationship between the surface power density and the output by optical power sampling, so as to complete the calibration of the power density of a pulsed or pulse voltage dual output arc sensor.

[0041] Figure 1 FIG. 1 is a schematic diagram of the steps of the method for calibrating the surface power density of an arcing sensor according to an embodiment of the present application. Figure 1 As shown, the method for calibrating the surface power density of an arcing sensor according to an embodiment of the present invention comprises the following steps:

[0042] Step S110 (ideal slope generation step), forming an ideal slope calculation formula. The ideal slope calculation formula is composed of optical power parameters, real-time parameters to be measured and arcing optical lens area and is used to determine the ideal slope of the calibration curve of the sensor to be evaluated.

[0043] Step S120 (sensor application step), in the actual application process of the sensor, according to the measured values ​​of the real-time parameters of the sensor to be evaluated, the calibration slope of the current sensor to be evaluated is calculated using the ideal slope calculation formula constructed in step S110, so as to obtain the spectral irradiance responsivity of the current sensor after calibration.

[0044] The present invention can utilize the above-mentioned steps S110 and S120 to realize the calibration detection of the surface power density of single pulse output arcing sensors or pulse voltage dual output arcing sensors of different models.

[0045] Taking the first example as an example, the specific steps of the calibration and detection process of the surface power density of a single pulse output arcing sensor are explained below.

[0046] Figure 2 This is a schematic diagram of the steps of the first example of a method for calibrating the surface power density of an arcing sensor according to an embodiment of the present application.

[0047] like Figure 2As shown, step S201 is an ideal slope generation step. Step S201 forms a calculation expression for determining the ideal slope of the calibration curve of the sensor to be evaluated based on the optical power parameter, the real-time parameter to be measured and the area of ​​the arcing optical lens.

[0048] In one embodiment, the ideal slope calculation formula for a single pulse output arcing sensor is expressed by the following expression:

[0049]

[0050] Among them, R0 represents the spectral irradiance response parameter of the single pulse output arc sensor to be evaluated, f0 represents the real-time frequency measurement value of the single pulse output arc sensor to be evaluated, P0 represents the optical power of the single pulse output arc sensor to be evaluated, and S0 represents the arc optical lens area of ​​the single pulse output arc sensor to be evaluated.

[0051] Step S202 is a sensor application step. In one embodiment, the real-time parameter of the sensor to be evaluated is a real-time frequency characteristic parameter. Further, in the actual application process of the sensor to be tested, step S202 calculates the calibration slope of the current sensor to be evaluated according to the real-time frequency measurement value and the optical power measurement value of the sensor to be evaluated, using the ideal slope calculation formula, so as to obtain the spectral irradiance responsivity of the current sensor after the calibration detection is realized.

[0052] In step S202, an optical power meter may be used to measure the optical power measurement value of the sensor to be evaluated in real time. At the same time, the frequency measurement value of the sensor to be evaluated is measured in real time. In the embodiment of the present invention, the real-time frequency measurement value is the average value of the number of pulses output by the single pulse output arcing sensor to be evaluated in a unit time, or the average value of the inverse of the pulse interval output by the single pulse output arcing sensor to be evaluated in a unit time.

[0053] In this way, the embodiment of the present invention can obtain the calibrated responsivity of the single pulse output type arc sensor based on the real-time detection and measurement data of the optical power and the arc sensor. The spectral irradiance responsivity can be obtained by first calculating the ratio of the output frequency characteristic parameter to the optical power, and then multiplying the ratio by the area of ​​the optical lens. This calibration detection method can be used to calculate the calibration curve of the single pulse output arc sensor.

[0054] Taking the second example as an example, the specific steps of the calibration and detection process of the surface power density of the pulse voltage dual-output arc sensor are explained below.

[0055] Figure 3 This is a schematic diagram of the steps of the second example of the calibration method for the surface power density of the arcing sensor in an embodiment of the present application.

[0056] like Figure 3 As shown, the embodiment of the present invention further includes a preprocessing step before implementing the ideal slope generation step. Step S301 is a preprocessing step. Step S301 measures the first frequency, the second frequency and the voltage amplitude of the sensor to be evaluated in different bands to obtain the proportionality coefficient representing the corresponding relationship between the frequency and the voltage in different bands.

[0057] In step S301, first, measure the first frequency, second frequency and voltage amplitude of the pulse voltage dual-output arc sensor to be evaluated in different bands, and draw the dynamic curve of the first frequency changing with the band, the dynamic curve of the second frequency changing with the band and the dynamic curve of the voltage amplitude changing with the band respectively, and select the optimal frequency parameters.

[0058] Since the energy of the pulse arc sensor is mainly reflected in the density of the output pulses, the density is quantified into two indicators: ① the mean value of the number of pulses; ② the mean value of the reciprocal of the pulse interval. In the embodiment of the present invention, the first frequency is the mean value of the number of pulses output by the pulse voltage dual-output arc sensor to be evaluated per unit time, and the second frequency is the mean value of the reciprocal of the pulse interval output by the pulse voltage dual-output arc sensor to be evaluated per unit time.

[0059] Moreover, for a dual-output arc sensor that can output pulse voltages simultaneously, the output voltage amplitude can also be used to reflect the energy strength of the output voltage.

[0060] Therefore, before calibrating the pulse voltage dual-output arcing sensor to be evaluated, step S301 needs to collect the output signals of the pulse voltage dual-output arcing sensor to be evaluated in different bands, and obtain the first frequency data, second frequency data and voltage amplitude data in different bands according to the three dimensions of voltage amplitude, first frequency and second frequency, so as to draw three dynamic curves that change with the bands.

[0061] In step S301, based on the (first) similarity between the first frequency dynamic curve and the voltage amplitude dynamic curve, and the (second) similarity between the second frequency dynamic curve and the voltage amplitude dynamic curve, by comparing the two similarities (comparing the first similarity with the second similarity), the frequency type (first frequency parameter or second frequency parameter) with a higher similarity to the voltage amplitude dynamic curve is selected as the optimal frequency parameter.

[0062] Figure 4 This is an example diagram of the best frequency curve processing result of the second example in the calibration method for the arc sensor surface power density of the embodiment of the present application. After the first frequency, the second frequency, and the voltage amplitude are respectively processed into curve trends, Figure 4The quantitative measurement data of the corresponding dynamic curves are shown. Therefore, the curve that reasonably reflects the power density can be screened out according to the similarity of the three curves, so that the corresponding proportionality coefficient can be calculated. Figure 4 As shown, the first frequency dynamic curve is more consistent with the voltage amplitude dynamic curve, and the first frequency parameter can be selected as the optimal frequency parameter.

[0063] Finally, step S301 obtains the proportionality coefficient k in the corresponding band according to the ratio of the frequency value of the optimal frequency parameter in different bands to the voltage amplitude. The proportionality coefficient k can be expressed as:

[0064] Step S302 is an ideal slope generation step. Step S302 forms a calculation expression for determining the ideal slope of the calibration curve of the sensor to be evaluated based on the optical power parameter, the real-time parameter to be measured and the area of ​​the arcing optical lens.

[0065] Specifically, in step S302, first, a first spectral response expression is constructed to characterize the spectral responsivity of the standard voltage sensor based on the measured voltage parameters and optical power parameters of the standard voltage sensor, and a second spectral response expression is constructed to characterize the spectral responsivity of the current sensor to be evaluated (the pulse voltage dual-output arc sensor to be evaluated) based on the measured voltage parameters and optical power parameters of the dual-output arc sensor to be evaluated.

[0066] According to the comparison method, based on the ratio of the values ​​of the sensor under test (the pulse voltage dual-output arc sensor to be evaluated) and the standard voltage output arc sensor, the spectral responsivity and spectral irradiance responsivity data of the voltage arc sensor can be obtained.

[0067] In one embodiment, the first spectral response expression is:

[0068]

[0069] Wherein, λ represents the wavelength, R represents the spectral responsivity of the standard voltage sensor, V represents the voltage parameter of the standard voltage sensor, and P represents the optical power parameter of the standard voltage sensor.

[0070] In one embodiment, the second spectral response expression is:

[0071]

[0072] Among them, R x represents the spectral responsivity of the dual output arc sensor, V x Represents the voltage parameter of the dual output arc sensor, P x Represents the optical power parameter of the dual-output arc sensor.

[0073] Then, step S302 converts the first spectral response expression and the second spectral response expression into the spectral response expression of the sensor to be tested based on the principle that the optical power received by the dual-output arc sensor to be evaluated and the standard voltage output arc sensor is consistent. The principle of the comparison method is to assume that the optical power received by the standard voltage output arc sensor is consistent with the optical power received by the dual-output arc sensor to be evaluated, that is, P(λ) = P x (λ). Thus, the spectral responsivity of the detector to be tested is obtained as:

[0074]

[0075] Finally, step S302 will also convert the spectral response formula of the sensor to be tested into an ideal slope calculation formula based on the arcing optical lens area parameter of the dual-output arcing sensor to be evaluated.

[0076] In one embodiment, the ideal slope calculation formula for the pulse voltage dual-output arcing sensor to be evaluated is expressed by the following expression:

[0077]

[0078] Among them, R E It represents the spectral irradiance responsivity of the pulse voltage dual-output arc-burning sensor to be evaluated after calibration, and S represents the arc-burning optical lens area of ​​the pulse voltage dual-output arc-burning sensor to be evaluated.

[0079] Next, step S303 is a sensor application step. In one embodiment, the real-time parameter of the sensor to be evaluated is a real-time voltage parameter. Further, in the actual application process of the sensor to be tested, step S303 calculates the corresponding calibration slope according to the real-time voltage measurement value of the sensor to be evaluated (the pulse voltage dual-output arcing sensor to be evaluated) using the ideal slope calculation formula, thereby obtaining the spectral irradiance responsivity of the current sensor according to the calculated calibration slope and the proportional coefficient under the corresponding band.

[0080] In step S303, the output voltage values ​​of the dual-output arc sensor to be evaluated and the standard voltage output type arc sensor can be measured simultaneously in real time, and the two voltage values ​​are substituted into the above expression (5) respectively; at the same time, the known spectral response value of the standard voltage output type arc sensor is used and substituted into the expression (5). In this way, the spectral response of the dual-output arc sensor to be evaluated after calibration can be continuously calculated by measuring the voltage value of the dual-output arc sensor to be evaluated and the voltage value of the standard voltage output type arc sensor.

[0081] In addition, based on the above calibration method, an embodiment of the present invention further provides a calibration system for the surface power density of an arcing sensor.

[0082] Figure 5 FIG. 1 is a schematic diagram of the structure of a calibration system for the surface power density of an arcing sensor according to an embodiment of the present application. Figure 5 As shown, the calibration system described in the embodiment of the present invention includes: an optical transmission module 501, an optical power measurement module 502, a real-time parameter measurement module 503 and a computer 504.

[0083] The light emitting module 501 emits a designated light source. The optical power measuring module 502 uses an optical power meter, which is mainly used to measure the optical power of the sensor to be evaluated or the standard sensor during the calibration test process. The real-time parameter measuring module 503 is mainly used to measure the real-time parameters of the sensor to be evaluated. The computer 504 is used to calculate the corresponding calibration slope according to the real-time parameter measurement value of the sensor to be evaluated and the ideal slope calculation formula during the actual application of the sensor, so as to obtain the spectral irradiance responsivity of the current sensor. Among them, the ideal slope calculation formula is a calculation expression for determining the ideal slope of the calibration curve of the sensor to be evaluated based on the optical power parameter, the real-time parameter to be measured and the area of ​​the arcing optical lens.

[0084] like Figure 5 As shown, the light emitting module 501 includes: a standard ultraviolet light source, a lens group, an optical chopper and a monochromator.

[0085] The present invention discloses a method and system for calibrating the surface power density of an arcing sensor. The method and system can measure the surface power density of an arcing sensor while detecting the number and duration of arcing, which is equivalent to reprocessing and screening the traditional measurement results to achieve accurate detection of arcing, and can realize the calibration of the surface power density of a single pulse and / or pulse voltage dual output type arcing sensor.

[0086] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any person familiar with the technology within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

[0087] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0088] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0089] It should be understood that the embodiments disclosed in the present invention are not limited to the specific structures, processing steps or materials disclosed herein, but should be extended to equivalent substitutions of these features understood by ordinary technicians in the relevant field. It should also be understood that the terms used herein are only used for the purpose of describing specific embodiments and are not meant to be limiting.

[0090] The "one embodiment" or "embodiment" mentioned in the specification means that the specific features, structures or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment" or "embodiment" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0091] Although the embodiments disclosed in the present invention are as above, the contents described are only embodiments adopted for facilitating the understanding of the present invention and are not intended to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. A method for calibrating the surface power density of an arcing sensor, characterized in that: include: The ideal slope generation step forms a calculation expression for determining the ideal slope of the calibration curve of the sensor to be evaluated based on the optical power parameter, the real-time parameter to be measured and the area of ​​the arcing optical lens; Sensor application steps: In the actual application process, according to the real-time parameter measurement values ​​of the sensor to be evaluated, the ideal slope calculation formula is used to calculate the corresponding calibration slope, so as to obtain the spectral irradiance responsivity of the current sensor.

2. The calibration method according to claim 1, characterized in that: The sensor to be evaluated is a single pulse output arcing sensor, wherein, in the sensor application step, According to the real-time frequency measurement value and optical power measurement value of the sensor to be evaluated, the corresponding calibration slope is calculated using the ideal slope calculation formula to obtain the spectral irradiance responsivity of the current sensor, wherein the real-time frequency measurement value is the mean value of the number of output pulses per unit time or the mean value of the reciprocal of the output pulse interval.

3. The calibration method according to claim 2, characterized in that: In the ideal slope generating step, the ideal slope calculation formula is expressed by the following expression: Among them, R0 represents the spectral irradiance response parameter of the single pulse output arc sensor to be evaluated, f0 represents the real-time frequency measurement value of the single pulse output arc sensor to be evaluated, P0 represents the optical power of the single pulse output arc sensor to be evaluated, and S0 represents the arc optical lens area of ​​the single pulse output arc sensor to be evaluated.

4. The calibration method according to claim 1, characterized in that: When the sensor to be evaluated is a pulse voltage dual-output arcing sensor, the calibration method further includes a preprocessing step, wherein the preprocessing step includes: The first frequency, the second frequency and the voltage amplitude of the sensor to be evaluated in different bands are measured to obtain the proportionality coefficient representing the corresponding relationship between the frequency and the voltage in different bands, wherein the sensor application step includes: According to the real-time voltage measurement value of the sensor to be evaluated, the corresponding calibration slope is calculated using the ideal slope calculation formula, so as to obtain the spectral irradiance responsivity of the current sensor according to the calibration slope and the proportional coefficient in the corresponding band.

5. The calibration method according to claim 4, characterized in that: The process of obtaining the proportionality coefficient representing the corresponding relationship between frequency and voltage in different bands includes: Measuring the first frequency, the second frequency and the voltage amplitude of the sensor to be evaluated in different bands, respectively drawing dynamic curves of the first frequency, the second frequency and the voltage amplitude changing with the bands, and selecting the optimal frequency parameters; According to the ratio of the frequency value of the optimal frequency parameter in different bands to the voltage amplitude, the proportional coefficient in the corresponding band is obtained.

6. The calibration method according to claim 5, characterized in that: According to the similarity between the first frequency dynamic curve and the voltage amplitude dynamic curve, and the similarity between the second frequency dynamic curve and the voltage amplitude dynamic curve, by comparing the two similarities, the frequency type with higher similarity to the voltage amplitude dynamic curve is used as the optimal frequency parameter, wherein the first frequency is the mean value of the number of output pulses per unit time, and the second frequency is the mean value of the inverse of the output pulse interval per unit time.

7. The calibration method according to any one of claims 4 to 6, characterized in that: The step of generating the ideal slope includes: Constructing a first spectral response expression for characterizing the spectral responsivity of the corresponding sensor according to the voltage parameter to be measured and the optical power parameter of the standard voltage sensor, and a second spectral response expression for characterizing the spectral responsivity of the corresponding sensor according to the voltage parameter to be measured and the optical power parameter of the dual-output arcing sensor to be evaluated; According to the principle that the optical powers received by the dual-output arcing sensor to be evaluated and the standard voltage sensor are consistent, converting the first spectral response expression and the second spectral response expression into a spectral response expression of the sensor to be tested; Based on the arcing optical lens area parameter of the dual-output arcing sensor to be evaluated, the spectral response formula of the sensor to be tested is converted into the ideal slope calculation formula.

8. The calibration method according to claim 7, characterized in that: The first spectral response expression is: Wherein, λ represents the wavelength, R represents the spectral responsivity of the standard voltage sensor, V represents the voltage parameter of the standard voltage sensor, and P represents the optical power parameter of the standard voltage sensor. The second spectral response expression is: Among them, R x represents the spectral responsivity of the dual output arc sensor, V x Represents the voltage parameter of the dual output arc sensor, P x represents the optical power parameter of the dual-output arcing sensor, and the spectral response formula of the sensor to be tested is:

9. The calibration method according to claim 7 or 8, characterized in that: The ideal slope calculation formula is: Where λ is the wavelength, R E represents the spectral irradiance responsivity of the dual-output arc sensor, and S represents the arc optical lens area of ​​the dual-output arc sensor.

10. A calibration system for arcing sensor surface power density, characterized in that: The calibration system is used to implement the calibration method according to any one of claims 1 to 9, wherein the calibration system comprises: Optical transmitter module; Optical power measurement module; A real-time parameter measurement module for the sensor to be tested; and A computer is configured to calculate a corresponding calibration slope using an ideal slope calculation formula according to the real-time parameter measurement value of the sensor to be evaluated during the actual application of the sensor, thereby obtaining the spectral irradiance responsivity of the current sensor, wherein the ideal slope calculation formula is a calculation expression for determining the ideal slope of the calibration curve of the sensor to be evaluated based on the optical power parameter, the real-time parameter to be measured and the area of ​​the arcing optical lens.

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