Method and system for controlling and adjusting non-contact voltage sensor

Abstract

The embodiment of the invention provides a control and adjustment method and system for a non-contact voltage sensor, and belongs to the technical field of sensor control. The control adjustment method comprises the following steps: constructing a corresponding relation table of incident wavelength, detection voltage and correction; obtaining the incident light wavelength and the detection voltage of the current non-contact voltage sensor; searching correction in the corresponding relation table according to the incident wavelength and the detection voltage; and correcting the detection voltage according to the correction amount. According to the control and adjustment method and system, the correction voltage is determined by combining the preset corresponding relation table, and compared with the prior art, the influence of objective factors on the detection voltage is overcome, so that the detection precision of the non-contact voltage sensor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sensor control, and in particular to a control and adjustment method and system for a non-contact voltage sensor. Background Art

[0002] In the field of power technology, nonlinear sensors also play an important role. For example, in the protection device of the power system, nonlinear current sensors are used to detect fault currents; in the power quality monitoring equipment, nonlinear voltage sensors are used to evaluate the stability of the power grid. These applications place extremely high demands on the accuracy of sensors, because any slight error may lead to serious consequences. However, due to various interference factors in the power system, such as electromagnetic compatibility issues, temperature fluctuations, etc., the calibration of nonlinear sensors becomes more complicated.

[0003] Traditional sensor calibration methods are often based on the linear assumption that there is a fixed proportional relationship between the sensor output and its input. For linear sensors, this method can effectively eliminate system errors and improve measurement accuracy. However, when faced with nonlinear sensors, the lack of an effective mathematical model to describe their complex response curves makes it impossible to accurately predict and compensate for the deviations caused by nonlinearity. In addition, as the use time increases and environmental conditions change, the characteristics of nonlinear sensors may also change, further increasing the difficulty of correction. Summary of the invention

[0004] An object of the embodiments of the present invention is to provide a control and regulation method and system for a non-contact voltage sensor, wherein the control and regulation method and system can improve the detection accuracy of the non-contact voltage sensor.

[0005] In order to achieve the above object, an embodiment of the present invention provides a control and adjustment method of a non-contact voltage sensor, comprising: Construct a corresponding relationship table between incident wavelength, detection voltage and correction amount; Obtain the incident light wavelength and detection voltage of the current non-contact voltage sensor; Searching for a correction amount in the correspondence table according to the incident wavelength and the detection voltage; The detection voltage is corrected according to the correction amount.

[0006] Optionally, searching for the correction amount according to the incident wavelength and the detection voltage in the correspondence table includes: Determine whether the incident wavelength can be searched in the correspondence table; When it is determined that the incident wavelength cannot be found in the correspondence table, searching the correspondence table for a wavelength value closest to the incident wavelength; Determining whether the detection voltage can be found in the voltage value corresponding to the wavelength value; In the case where it is determined that the detection voltage cannot be searched in the voltage values ​​corresponding to the wavelength value, determining left and right voltage values ​​of the detection voltage in the voltage values ​​corresponding to the wavelength value; A linear calculation method is used to determine the correction amount corresponding to the detection voltage according to the left and right voltage values.

[0007] Optionally, a linear calculation method is used to determine a correction amount corresponding to the detection voltage according to the left and right voltage values, including: According to formula (1), the correction amount corresponding to the detection voltage is calculated: , (1) in, is the correction amount, is the voltage value on the right side, is the voltage value on the left, is the correction value corresponding to the voltage value on the right, is the correction amount corresponding to the voltage value on the left.

[0008] Optionally, obtaining the incident light wavelength and the detection voltage of the current non-contact voltage sensor includes: The detection voltage is processed by a preset filter amplifier circuit, wherein the filter amplifier circuit includes: A signal interface, used for accessing the detection voltage; a first amplifying unit, wherein a first end of the first amplifying unit is connected to the signal interface; a second amplifying unit, wherein a first end of the second amplifying unit is connected to a second end of the first amplifying unit, and the second end of the second amplifying unit is used to output an amplified first detection voltage; a third amplifying unit, wherein a first end of the third amplifying unit is connected to the signal interface; a fourth amplifying unit, wherein a first end of the fourth amplifying unit is connected to a second end of the fourth amplifying unit, and the second end of the fourth amplifying unit is used to output an amplified second detection voltage; The processing chip is used to output the processed detection voltage according to the first detection voltage and the second detection voltage.

[0009] Optionally, the first amplification unit includes: A first operational amplifier chip, wherein a non-phase input terminal of the first operational amplifier chip is connected to the signal interface, and a first terminal of the first operational amplifier chip is used for externally connecting a positive power supply; A first interface, wherein the first interface is connected to an inverting input terminal of the first operational amplifier chip; A first capacitor, one end of the first capacitor is connected to the first end of the first operational amplifier chip, and the other end of the first capacitor is grounded; A second capacitor, one end of the second capacitor is connected to the second end of the first operational amplifier chip, and the other end of the second capacitor is grounded.

[0010] Optionally, the second amplification unit includes: A first resistor, one end of which is connected to the output end of the first operational amplifier chip; a third capacitor, one end of the third capacitor being connected to the other end of the first resistor, and the other end of the third capacitor being grounded; a second resistor, one end of the second resistor being connected to the other end of the first resistor; a fourth capacitor, one end of the fourth capacitor being connected to the other end of the second resistor, and the other end of the fourth capacitor being connected to the other end of the third capacitor; a second operational amplifier chip, wherein an inverting input terminal of the second operational amplifier chip is connected to the other end of the second resistor, and a first end of the second operational amplifier chip is used for externally connecting a positive power supply; a fifth capacitor, one end of the fifth capacitor being connected to the first end of the second operational amplifier chip, and the other end of the fifth capacitor being grounded; a sixth capacitor, one end of the sixth capacitor being connected to the second end of the second operational amplifier chip, and the other end of the sixth capacitor being grounded; a third resistor, one end of which is grounded, and the other end of which is connected to the inverting input terminal and the output terminal of the second operational amplifier chip; The second interface is used to output the first detection voltage, one end of the second interface is connected to the output end of the second operational amplifier chip, and the other end of the second interface is grounded.

[0011] Optionally, the third amplification unit includes: A third interface, one end of which is grounded; a third operational amplifier chip, wherein a positive input terminal of the third operational amplifier chip is connected to the signal interface, an inverting input terminal of the third operational amplifier chip is connected to the other end of the third interface, and a first end of the third operational amplifier chip is used for externally connecting a positive power supply; a seventh capacitor, one end of the seventh capacitor being connected to the first end of the third operational amplifier chip, and the other end of the seventh capacitor being grounded; An eighth capacitor, one end of the eighth capacitor is connected to the second end of the third operational amplifier chip, and the other end of the eighth capacitor is grounded.

[0012] Optionally, the fourth amplification unit includes: a fourth resistor, one end of which is connected to the output end of the third operational amplifier chip; a ninth capacitor, one end of the ninth capacitor being connected to the other end of the fourth resistor, and the other end of the ninth capacitor being grounded; a fifth resistor, one end of the fifth resistor being connected to the other end of the fourth resistor; a tenth capacitor, one end of the tenth capacitor being connected to the other end of the fifth resistor, and the other end of the tenth capacitor being connected to the other end of the ninth capacitor; a fourth operational amplifier chip, wherein a non-inverting input terminal of the fourth operational amplifier chip is connected to the other end of the fifth resistor, and a first end of the fourth operational amplifier chip is used for external connection to a positive power supply; an eleventh capacitor, one end of the eleventh capacitor being connected to the first end of the fourth operational amplifier chip, and the other end of the eleventh capacitor being grounded; a sixth resistor, one end of which is grounded, and the other end of which is connected to the inverting input terminal and the output terminal of the fourth operational amplifier chip; a twelfth capacitor, one end of the twelfth capacitor is connected to the second end of the fourth operational amplifier chip, and the other end of the twelfth capacitor is grounded; A fourth interface is used to output the second detection voltage, one end of the fourth interface is connected to the output end of the fourth operational amplifier chip, and the other end of the fourth interface is grounded.

[0013] On the other hand, the present invention further provides a control and regulation system for a non-contact voltage sensor, the control and regulation system comprising a processor, and the processor is used to execute any of the control and regulation methods described above.

[0014] Through the above technical scheme, the embodiment of the present invention provides a control and adjustment method and system for a non-contact voltage sensor. The control and adjustment method and system determine the correction voltage by combining a preset correspondence table. Compared with the prior art, this method overcomes the influence of objective factors on the detection voltage, thereby improving the detection accuracy of the non-contact voltage sensor.

[0015] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings: Figure 1 is a flow chart of a control and adjustment method of a non-contact voltage sensor according to an embodiment of the present invention; Figure 2 is an exemplary diagram of a filter amplifier circuit according to an embodiment of the present invention; Figure 3 is a flow chart of a linear calculation method according to one embodiment of the present invention. DETAILED DESCRIPTION

[0017] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0018] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution of this application are in compliance with the relevant provisions of national laws and regulations. In the embodiments of this application, some existing solutions in the industry such as certain software, components, and models may be mentioned, which should be considered as exemplary. Their purpose is only to illustrate the feasibility of implementing the technical solution of this application, but it does not mean that the applicant has or will necessarily use the solution.

[0019] like Figure 1 FIG. 1 is a flow chart of a control and adjustment method of a non-contact voltage sensor according to an embodiment of the present invention. Figure 1 In the control and adjustment method, the control and adjustment method may include the following steps: In step S10, a corresponding relationship table of incident wavelength, detection voltage and correction amount is constructed; In step S11, the incident light wavelength and the detection voltage of the current non-contact voltage sensor are obtained; In step S12, the correction amount is searched in the correspondence table according to the incident wavelength and the detection voltage; In step S13, the detection voltage is corrected according to the correction amount.

[0020] In this Figure 1 In the method shown, step S11 can be used to obtain the incident light wavelength and the detection voltage of the current non-contact voltage sensor. Considering that in actual measurement, the initial detection voltage has a low signal amplitude and is mixed with interference signals. Therefore, in one example of the present invention, step S11 can be to process the detection voltage using a preset filter amplifier circuit. The filter amplifier circuit can be processed in various forms known to those skilled in the art. In one example of the present invention, the filter amplifier circuit can be as follows: Figure 2 As shown. Figure 2 In the figure, the filtering and amplifying circuit may include a signal interface U1, a first amplifying unit 01, a second amplifying unit 02, a third amplifying unit 03, a fourth amplifying unit 04 and a processing chip (not shown in the figure).

[0021] Specifically, in this Figure 2 In the embodiment, the first amplification unit 01 may include a first operational amplifier chip U3, a first interface U2, a first capacitor C1 and a second capacitor C2. Wherein, the non-inverting input terminal of the first operational amplifier chip U3 may be connected to the signal interface U1, and the first end of the first operational amplifier chip U3 may be used for an external positive power supply. The first interface U2 may be connected to the inverting input terminal of the first operational amplifier chip U3. One end of the first capacitor C1 may be connected to the first end of the first operational amplifier chip U3, and the other end of the first capacitor C1 may be grounded. One end of the second capacitor C2 may be connected to the second end of the first operational amplifier chip U3, and the other end of the second capacitor C2 may be grounded.

[0022] The second amplification unit 02 may include a first resistor R1, a third capacitor C3, a second resistor R2, a fourth capacitor C4, a second operational amplifier chip U4, a fifth capacitor C5, a sixth capacitor C6, a third resistor R3 and a second interface U5. Among them, one end of the first resistor R1 may be connected to the output end of the first operational amplifier chip U3. One end of the third capacitor C3 may be connected to the other end of the first resistor R1, and the other end of the third capacitor C3 may be grounded. One end of the second resistor R2 may be connected to the other end of the first resistor R1. One end of the fourth capacitor C4 may be connected to the other end of the second resistor R2, and the other end of the fourth capacitor C4 may be connected to the other end of the third capacitor C3. The inverting input end of the second operational amplifier chip U4 may be connected to the other end of the second resistor R2, and the first end of the second operational amplifier chip U4 may be used for an external positive power supply. One end of the fifth capacitor C5 may be connected to the first end of the second operational amplifier chip U4, and the other end of the fifth capacitor C5 may be grounded. One end of the sixth capacitor C6 may be connected to the second end of the second operational amplifier chip U4, and the other end of the sixth capacitor C6 may be grounded. One end of the third resistor R3 can be grounded, and the other end of the third resistor R3 can be connected to the inverting input terminal and the output terminal of the second operational amplifier chip U4. The second interface U5 can be used to output the first detection voltage, one end of the second interface U5 can be connected to the output terminal of the second operational amplifier chip U4, and the other end of the second interface U5 is grounded.

[0023] The third amplification unit 03 may include a third interface U6, a third operational amplifier chip U7, a seventh capacitor C7 and an eighth capacitor C8. Wherein, one end of the third interface U6 may be grounded. The non-inverting input end of the third operational amplifier chip U7 may be connected to the signal interface U1, the inverting input end of the third operational amplifier chip U7 may be connected to the other end of the third interface U6, and the first end of the third operational amplifier chip U7 may be used for an external positive power supply. One end of the seventh capacitor C7 may be connected to the first end of the third operational amplifier chip U7, and the other end of the seventh capacitor C7 may be grounded. One end of the eighth capacitor C8 may be connected to the second end of the third operational amplifier chip U7, and the other end of the eighth capacitor C8 may be grounded.

[0024] The fourth amplification unit 04 may include a fourth resistor R4, a ninth capacitor C9, a fifth resistor R5, a tenth capacitor C10, a fourth operational amplifier chip U8, an eleventh capacitor C11, a sixth resistor R6, a twelfth capacitor C12, and a fourth interface U9. Among them, one end of the fourth resistor R4 may be connected to the output end of the third operational amplifier chip U8. One end of the ninth capacitor C9 may be connected to the other end of the fourth resistor R4, and the other end of the ninth capacitor C9 may be grounded. One end of the fifth resistor R5 may be connected to the other end of the fourth resistor R4. One end of the tenth capacitor C10 may be connected to the other end of the fifth resistor R5, and the other end of the tenth capacitor C10 may be connected to the other end of the ninth capacitor C9. The non-inverting input end of the fourth operational amplifier chip U8 may be connected to the other end of the fifth resistor R5, and the first end of the fourth operational amplifier chip U8 may be used for external connection to a positive power supply. One end of the eleventh capacitor C11 may be connected to the first end of the fourth operational amplifier chip U8, and the other end of the eleventh capacitor C11 may be grounded. One end of the sixth resistor R6 can be grounded, and the other end of the sixth resistor R6 can be connected to the inverting input terminal and the output terminal of the fourth operational amplifier chip U8. One end of the twelfth capacitor C12 can be connected to the second end of the fourth operational amplifier chip U8, and the other end of the twelfth capacitor C12 can be grounded. The fourth interface U9 can be used to output the second detection voltage, one end of the fourth interface U9 can be connected to the output terminal of the fourth operational amplifier chip U8, and the other end of the fourth interface U9 can be grounded.

[0025] Step S12 may be searching for the correction amount in the correspondence table according to the incident wavelength and the detection voltage. Among them, since the correspondence table uses the incident wavelength and the detection voltage as the row index and the column index, and the correction amount is in the form of a numerical value in the table, if the incident wavelength and the detection voltage can be directly found in the correspondence standard, then the correction amount can be directly read. On the contrary, if it cannot be directly searched, it is necessary to search for the numerical change form of the incident wavelength and the detection voltage. Specifically, since the numerical change form of the incident wavelength is generally not a linear change or a quasi-linear change, it is necessary to search for the nearest point in the correspondence table. The change form of the detection voltage is generally a linear change, so it can be searched by a linear calculation method. More specifically, step S12 may further include the following Figure 3 In the steps shown in Figure 3 In the step S12, the step S12 may further include the following method: In step S20, it is determined whether the incident wavelength can be searched in the corresponding relationship table; In step S21, when it is determined that the incident wavelength cannot be found in the corresponding relationship table, the corresponding relationship table is searched for a wavelength value closest to the incident wavelength; In step S22, it is determined whether the detection voltage can be found in the voltage value corresponding to the wavelength value; In step S23, when it is determined that the detection voltage cannot be found in the voltage values ​​corresponding to the wavelength value, the left and right voltage values ​​of the detection voltage in the voltage values ​​corresponding to the wavelength value are determined; In step S24, a linear calculation method is used to determine the correction amount corresponding to the detection voltage according to the left and right voltage values. The linear calculation method can also be determined by the following formula (1): , (1) in, is the correction amount, is the voltage value on the right side, is the voltage value on the left, is the correction value corresponding to the voltage value on the right, is the correction amount corresponding to the voltage value on the left.

[0026] On the other hand, the present invention also provides a control and regulation system for a non-contact voltage sensor, the control and regulation system comprising a processor, the processor being used to execute any of the control and regulation methods described above. Specifically, the control and regulation method may include the following steps: In step S10, a corresponding relationship table of incident wavelength, detection voltage and correction amount is constructed; In step S11, the incident light wavelength and the detection voltage of the current non-contact voltage sensor are obtained; In step S12, the correction amount is searched in the correspondence table according to the incident wavelength and the detection voltage; In step S13, the detection voltage is corrected according to the correction amount.

[0027] In this Figure 1 In the method shown, step S11 can be used to obtain the incident light wavelength and the detection voltage of the current non-contact voltage sensor. Considering that in actual measurement, the initial detection voltage has a low signal amplitude and is mixed with interference signals. Therefore, in one example of the present invention, step S11 can be to process the detection voltage using a preset filter amplifier circuit. The filter amplifier circuit can be processed in various forms known to those skilled in the art. In one example of the present invention, the filter amplifier circuit can be as follows: Figure 2 As shown. Figure 2 In the figure, the filtering and amplifying circuit may include a signal interface U1, a first amplifying unit 01, a second amplifying unit 02, a third amplifying unit 03, a fourth amplifying unit 04 and a processing chip (not shown in the figure).

[0028] Specifically, in this Figure 2In the embodiment, the first amplification unit 01 may include a first operational amplifier chip U3, a first interface U2, a first capacitor C1 and a second capacitor C2. Wherein, the non-inverting input terminal of the first operational amplifier chip U3 may be connected to the signal interface U1, and the first end of the first operational amplifier chip U3 may be used for an external positive power supply. The first interface U2 may be connected to the inverting input terminal of the first operational amplifier chip U3. One end of the first capacitor C1 may be connected to the first end of the first operational amplifier chip U3, and the other end of the first capacitor C1 may be grounded. One end of the second capacitor C2 may be connected to the second end of the first operational amplifier chip U3, and the other end of the second capacitor C2 may be grounded.

[0029] The second amplification unit 02 may include a first resistor R1, a third capacitor C3, a second resistor R2, a fourth capacitor C4, a second operational amplifier chip U4, a fifth capacitor C5, a sixth capacitor C6, a third resistor R3 and a second interface U5. Among them, one end of the first resistor R1 may be connected to the output end of the first operational amplifier chip U3. One end of the third capacitor C3 may be connected to the other end of the first resistor R1, and the other end of the third capacitor C3 may be grounded. One end of the second resistor R2 may be connected to the other end of the first resistor R1. One end of the fourth capacitor C4 may be connected to the other end of the second resistor R2, and the other end of the fourth capacitor C4 may be connected to the other end of the third capacitor C3. The inverting input end of the second operational amplifier chip U4 may be connected to the other end of the second resistor R2, and the first end of the second operational amplifier chip U4 may be used for an external positive power supply. One end of the fifth capacitor C5 may be connected to the first end of the second operational amplifier chip U4, and the other end of the fifth capacitor C5 may be grounded. One end of the sixth capacitor C6 may be connected to the second end of the second operational amplifier chip U4, and the other end of the sixth capacitor C6 may be grounded. One end of the third resistor R3 can be grounded, and the other end of the third resistor R3 can be connected to the inverting input terminal and the output terminal of the second operational amplifier chip U4. The second interface U5 can be used to output the first detection voltage, one end of the second interface U5 can be connected to the output terminal of the second operational amplifier chip U4, and the other end of the second interface U5 is grounded.

[0030] The third amplification unit 03 may include a third interface U6, a third operational amplifier chip U7, a seventh capacitor C7 and an eighth capacitor C8. Wherein, one end of the third interface U6 may be grounded. The non-inverting input end of the third operational amplifier chip U7 may be connected to the signal interface U1, the inverting input end of the third operational amplifier chip U7 may be connected to the other end of the third interface U6, and the first end of the third operational amplifier chip U7 may be used for an external positive power supply. One end of the seventh capacitor C7 may be connected to the first end of the third operational amplifier chip U7, and the other end of the seventh capacitor C7 may be grounded. One end of the eighth capacitor C8 may be connected to the second end of the third operational amplifier chip U7, and the other end of the eighth capacitor C8 may be grounded.

[0031] The fourth amplification unit 04 may include a fourth resistor R4, a ninth capacitor C9, a fifth resistor R5, a tenth capacitor C10, a fourth operational amplifier chip U8, an eleventh capacitor C11, a sixth resistor R6, a twelfth capacitor C12, and a fourth interface U9. Among them, one end of the fourth resistor R4 may be connected to the output end of the third operational amplifier chip U8. One end of the ninth capacitor C9 may be connected to the other end of the fourth resistor R4, and the other end of the ninth capacitor C9 may be grounded. One end of the fifth resistor R5 may be connected to the other end of the fourth resistor R4. One end of the tenth capacitor C10 may be connected to the other end of the fifth resistor R5, and the other end of the tenth capacitor C10 may be connected to the other end of the ninth capacitor C9. The non-inverting input end of the fourth operational amplifier chip U8 may be connected to the other end of the fifth resistor R5, and the first end of the fourth operational amplifier chip U8 may be used for external connection to a positive power supply. One end of the eleventh capacitor C11 may be connected to the first end of the fourth operational amplifier chip U8, and the other end of the eleventh capacitor C11 may be grounded. One end of the sixth resistor R6 can be grounded, and the other end of the sixth resistor R6 can be connected to the inverting input terminal and the output terminal of the fourth operational amplifier chip U8. One end of the twelfth capacitor C12 can be connected to the second end of the fourth operational amplifier chip U8, and the other end of the twelfth capacitor C12 can be grounded. The fourth interface U9 can be used to output the second detection voltage, one end of the fourth interface U9 can be connected to the output terminal of the fourth operational amplifier chip U8, and the other end of the fourth interface U9 can be grounded.

[0032] Step S12 may be searching for the correction amount in the correspondence table according to the incident wavelength and the detection voltage. Among them, since the correspondence table uses the incident wavelength and the detection voltage as the row index and the column index, and the correction amount is in the form of a numerical value in the table, if the incident wavelength and the detection voltage can be directly found in the correspondence standard, then the correction amount can be directly read. On the contrary, if it cannot be directly searched, it is necessary to search for the numerical change form of the incident wavelength and the detection voltage. Specifically, since the numerical change form of the incident wavelength is generally not a linear change or a quasi-linear change, it is necessary to search for the nearest point in the correspondence table. The change form of the detection voltage is generally a linear change, so it can be searched by a linear calculation method. More specifically, step S12 may further include the following Figure 3 In the steps shown in Figure 3 In the step S12, the step S12 may further include the following method: In step S20, it is determined whether the incident wavelength can be searched in the corresponding relationship table; In step S21, when it is determined that the incident wavelength cannot be found in the corresponding relationship table, the corresponding relationship table is searched for a wavelength value closest to the incident wavelength; In step S22, it is determined whether the detection voltage can be found in the voltage value corresponding to the wavelength value; In step S23, when it is determined that the detection voltage cannot be found in the voltage values ​​corresponding to the wavelength value, the left and right voltage values ​​of the detection voltage in the voltage values ​​corresponding to the wavelength value are determined; In step S24, a linear calculation method is used to determine the correction amount corresponding to the detection voltage according to the left and right voltage values. The linear calculation method can also be determined by the following formula (1): , (1) in, is the correction amount, is the voltage value on the right side, is the voltage value on the left, is the correction value corresponding to the voltage value on the right, is the correction amount corresponding to the voltage value on the left.

[0033] Through the above technical scheme, the embodiment of the present invention provides a control and adjustment method and system for a non-contact voltage sensor. The control and adjustment method and system determine the correction voltage by combining a preset correspondence table. Compared with the prior art, this method overcomes the influence of objective factors on the detection voltage, thereby improving the detection accuracy of the non-contact voltage sensor.

[0034] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0035] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0036] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0037] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0038] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0039] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0040] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0041] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0042] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A control and adjustment method for a non-contact voltage sensor, characterized in that: The control and adjustment method comprises: Construct a corresponding relationship table between incident wavelength, detection voltage and correction amount; Obtain the incident light wavelength and detection voltage of the current non-contact voltage sensor; Searching for a correction amount in the correspondence table according to the incident wavelength and the detection voltage; The detection voltage is corrected according to the correction amount.

2. The control and adjustment method according to claim 1, characterized in that: Searching for the correction amount in the correspondence table according to the incident wavelength and the detection voltage includes: Determine whether the incident wavelength can be searched in the correspondence table; When it is determined that the incident wavelength cannot be found in the correspondence table, searching the correspondence table for a wavelength value closest to the incident wavelength; Determining whether the detection voltage can be found in the voltage value corresponding to the wavelength value; In the case where it is determined that the detection voltage cannot be searched in the voltage values ​​corresponding to the wavelength value, determining left and right voltage values ​​of the detection voltage in the voltage values ​​corresponding to the wavelength value; A linear calculation method is used to determine the correction amount corresponding to the detection voltage according to the left and right voltage values.

3. The control and adjustment method according to claim 2, characterized in that: The correction amount corresponding to the detection voltage is determined according to the left and right voltage values ​​by a linear calculation method, including: According to formula (1), the correction amount corresponding to the detection voltage is calculated: ，（1） in, is the correction amount, is the voltage value on the right side, is the voltage value on the left, is the correction value corresponding to the voltage value on the right, is the correction amount corresponding to the voltage value on the left.

4. The control and adjustment method according to claim 1, characterized in that: Get the incident light wavelength and detection voltage of the current non-contact voltage sensor, including: The detection voltage is processed by a preset filter amplifier circuit, wherein the filter amplifier circuit includes: A signal interface, used for accessing the detection voltage; a first amplifying unit, wherein a first end of the first amplifying unit is connected to the signal interface; a second amplifying unit, wherein a first end of the second amplifying unit is connected to a second end of the first amplifying unit, and the second end of the second amplifying unit is used to output an amplified first detection voltage; a third amplifying unit, wherein a first end of the third amplifying unit is connected to the signal interface; a fourth amplifying unit, wherein a first end of the fourth amplifying unit is connected to a second end of the fourth amplifying unit, and the second end of the fourth amplifying unit is used to output an amplified second detection voltage; The processing chip is used to output the processed detection voltage according to the first detection voltage and the second detection voltage.

5. The control and adjustment method according to claim 4, characterized in that: The first amplification unit comprises: A first operational amplifier chip, wherein a non-phase input terminal of the first operational amplifier chip is connected to the signal interface, and a first terminal of the first operational amplifier chip is used for externally connecting a positive power supply; A first interface, wherein the first interface is connected to an inverting input terminal of the first operational amplifier chip; A first capacitor, one end of the first capacitor is connected to the first end of the first operational amplifier chip, and the other end of the first capacitor is grounded; A second capacitor, one end of the second capacitor is connected to the second end of the first operational amplifier chip, and the other end of the second capacitor is grounded.

6. The control and adjustment method according to claim 5, characterized in that: The second amplification unit comprises: A first resistor, one end of which is connected to the output end of the first operational amplifier chip; a third capacitor, one end of the third capacitor being connected to the other end of the first resistor, and the other end of the third capacitor being grounded; a second resistor, one end of the second resistor being connected to the other end of the first resistor; a fourth capacitor, one end of the fourth capacitor being connected to the other end of the second resistor, and the other end of the fourth capacitor being connected to the other end of the third capacitor; a second operational amplifier chip, wherein an inverting input terminal of the second operational amplifier chip is connected to the other end of the second resistor, and a first end of the second operational amplifier chip is used for externally connecting a positive power supply; a fifth capacitor, one end of the fifth capacitor being connected to the first end of the second operational amplifier chip, and the other end of the fifth capacitor being grounded; a sixth capacitor, one end of the sixth capacitor being connected to the second end of the second operational amplifier chip, and the other end of the sixth capacitor being grounded; a third resistor, one end of which is grounded, and the other end of which is connected to the inverting input terminal and the output terminal of the second operational amplifier chip; The second interface is used to output the first detection voltage, one end of the second interface is connected to the output end of the second operational amplifier chip, and the other end of the second interface is grounded.

7. The control and adjustment method according to claim 4, characterized in that: The third amplification unit comprises: A third interface, one end of which is grounded; a third operational amplifier chip, wherein a positive input terminal of the third operational amplifier chip is connected to the signal interface, an inverting input terminal of the third operational amplifier chip is connected to the other end of the third interface, and a first end of the third operational amplifier chip is used for externally connecting a positive power supply; a seventh capacitor, one end of the seventh capacitor being connected to the first end of the third operational amplifier chip, and the other end of the seventh capacitor being grounded; An eighth capacitor, one end of the eighth capacitor is connected to the second end of the third operational amplifier chip, and the other end of the eighth capacitor is grounded.

8. The control and adjustment method according to claim 7, characterized in that: The fourth amplification unit comprises: a fourth resistor, one end of which is connected to the output end of the third operational amplifier chip; a ninth capacitor, one end of the ninth capacitor being connected to the other end of the fourth resistor, and the other end of the ninth capacitor being grounded; a fifth resistor, one end of the fifth resistor being connected to the other end of the fourth resistor; a tenth capacitor, one end of the tenth capacitor being connected to the other end of the fifth resistor, and the other end of the tenth capacitor being connected to the other end of the ninth capacitor; a fourth operational amplifier chip, wherein a non-inverting input terminal of the fourth operational amplifier chip is connected to the other end of the fifth resistor, and a first end of the fourth operational amplifier chip is used for external connection to a positive power supply; an eleventh capacitor, one end of the eleventh capacitor being connected to the first end of the fourth operational amplifier chip, and the other end of the eleventh capacitor being grounded; a sixth resistor, one end of which is grounded, and the other end of which is connected to the inverting input terminal and the output terminal of the fourth operational amplifier chip; a twelfth capacitor, one end of the twelfth capacitor is connected to the second end of the fourth operational amplifier chip, and the other end of the twelfth capacitor is grounded; A fourth interface is used to output the second detection voltage, one end of the fourth interface is connected to the output end of the fourth operational amplifier chip, and the other end of the fourth interface is grounded.

9. A control and adjustment system for a non-contact voltage sensor, characterized in that: The control and regulation system comprises a processor, and the processor is used to execute the control and regulation method according to any one of claims 1 to 8.

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