CN113281556B - Charged display device and charged measurement system - Google Patents

Charged display device and charged measurement system Download PDF

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Publication number
CN113281556B
CN113281556B CN202110392974.9A CN202110392974A CN113281556B CN 113281556 B CN113281556 B CN 113281556B CN 202110392974 A CN202110392974 A CN 202110392974A CN 113281556 B CN113281556 B CN 113281556B
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China
Prior art keywords
component
display device
display
assembly
charged
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CN113281556A (en
Inventor
潘雄
时维经
刘伟雄
李康宁
潘晓柏
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Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
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Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
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Priority to CN202110392974.9A priority Critical patent/CN113281556B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/145Indicating the presence of current or voltage
    • G01R19/155Indicating the presence of voltage
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

The application relates to an electrified display device and an electrified measurement system, wherein the electrified display device comprises a test polar plate, a display component and a control component; the test polar plate is used for forming an induction capacitor with the equipment to be tested, and the induction capacitor is used for obtaining a potential difference to supply power to the display assembly and the control assembly; the control component is used for detecting the operation voltage of the equipment to be tested and controlling the display component to present different display states according to the operation voltage. The embodiment of the application can improve the flexibility of the electrified display in measuring and displaying the running voltage of the equipment to be tested.

Description

Charged display device and charged measurement system
Technical Field
The application relates to the technical field of power grid equipment, in particular to an electrified display device and an electrified measurement system.
Background
The live display is generally arranged on electrical equipment such as a circuit breaker, a main transformer, a switch cabinet and the like, can visually display whether the electrical equipment has operating voltage, provides information of the voltage state of a main loop at the detected position of the electrical equipment for operation and detection personnel, and prevents electrical misoperation.
In the related art, the live display may be mounted on a housing of the electric device, and the measurement of the operation voltage of the electric device is performed by an electric field coupling principle between a high-voltage electric field of the electric device and a sensor of the live display. When the electrical device is provided with an operating voltage, the indicator light of the live display is always on.
However, the use of such a live display is relatively limited, and the live display has poor flexibility in measuring and displaying the operating voltage of the electrical equipment.
Disclosure of Invention
Accordingly, it is necessary to provide a live display device and a live measurement system for solving the technical problem that the conventional live display has poor flexibility in measuring and displaying the operating voltage of an electrical device.
In a first aspect, an embodiment of the present application provides an electrified display device, including a test plate, a display assembly, and a control assembly;
the test polar plate is used for forming an induction capacitor with the equipment to be tested, and the induction capacitor is used for obtaining a potential difference to supply power to the display assembly and the control assembly;
the control component is used for detecting the operation voltage of the equipment to be tested and controlling the display component to present different display states according to the operation voltage.
In one embodiment, the charged display device further includes:
the boosting component is connected with the induction capacitor in parallel and is used for boosting the potential difference obtained based on the induction capacitor to a preset multiple.
In one embodiment, the charged display device further includes:
and the input end of the rectifying component is electrically connected with the output end of the boosting component, and the rectifying component is used for converting alternating current obtained by boosting of the boosting component into direct current.
In one embodiment, the charged display device further includes:
the energy storage assembly is electrically connected with the output end of the rectifying assembly and used for storing direct current obtained by conversion of the rectifying assembly.
In one embodiment, the charged display device further includes:
a fixing assembly;
the shell is arranged at one end of the fixing component, and the other end of the fixing component is fixedly connected with the equipment to be tested;
the test polar plate, the display component and the control component are arranged in the inner cavity of the shell.
In one embodiment, the securing assembly includes:
a fixed rod;
the clamping piece comprises a first side wall and a second side wall which are oppositely arranged, the fixing rod penetrates through the first side wall, one end of the fixing rod is fixedly connected with the shell, and the other end of the fixing rod is used for fixing the copper bar of the device to be tested on the inner surface of the second side wall.
In one embodiment, the display assembly includes a plurality of indicator lights regularly distributed on a side surface of the housing remote from the fixed assembly.
In one embodiment, the display state includes a brightness and a flash frequency of the display assembly;
wherein the brightness is proportional to the magnitude of the operating voltage; the flash frequency is proportional to the magnitude of the operating voltage.
In one embodiment, the charged display device further includes:
and the communication component is used for sending the operating voltage to the terminal under the control of the control component.
In a second aspect, embodiments of the present application provide a live measurement system, the live measurement system comprising:
a device under test;
the live display device according to any one of the first aspect, wherein the live display device is configured to detect a magnitude of an operating voltage of the device under test, and control a display component of the live display device to present different display states according to the magnitude of the operating voltage.
The technical scheme provided by the embodiment of the application has the beneficial effects that at least:
the charged display device provided by the embodiment of the application comprises the test polar plate, the display component and the control component, wherein when the charged display device is used, the test polar plate and the equipment to be tested form an induction capacitor, the induction capacitor is used for obtaining a potential difference to supply power to the display component and the control component, and the control component can detect the operation voltage of the equipment to be tested and control the display component to present different display states according to the operation voltage; therefore, when the charged display device provided by the embodiment of the application is used for measuring the operating voltage of the equipment to be measured, the charged display device can work without an additional external power supply or any external lead, is simple in structure and easy to implement, can control the display assembly to display different display states for the operating voltages of the equipment to be measured, has obvious display effect, is convenient for operation and inspection personnel to intuitively know the real-time operating voltage of the equipment to be measured, and improves the flexibility of the charged display in measuring and displaying the operating voltage of the equipment to be measured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
Fig. 1 is a schematic structural diagram of an electrified display device according to an embodiment of the present application;
FIG. 2 is a schematic illustration of exemplary positions of a high voltage end plate, a test plate, and a ground plate;
FIG. 3 is a control schematic diagram of an exemplary control assembly;
FIG. 4 is a schematic diagram illustrating the connection of a boost assembly, a rectifying assembly, and an energy storage assembly;
fig. 5 is a schematic structural diagram of a charged display device according to another embodiment of the present application;
fig. 6 is a schematic perspective view of an exemplary charged display device according to another embodiment of the present application;
fig. 7 is a schematic view of a first viewing angle of an exemplary charged display device according to another embodiment of the present application;
fig. 8 is a schematic diagram of a second viewing angle of an exemplary charged display device according to another embodiment of the present application;
fig. 9 is a schematic diagram illustrating a third viewing angle of an exemplary charged display device according to another embodiment of the present application.
Reference numerals illustrate:
10. a live display device; 100. a fixing assembly; 110. a fixed rod; 120. a clamping piece; 200. a housing; 210. testing the polar plate; 220. a display assembly; 230. a control assembly; 240. a boost assembly; 250. a rectifying assembly; 260. an energy storage assembly; 310. a high voltage end plate; 320, ground plane plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, a power generating apparatus and system of the present application will be described in further detail below by way of examples with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
The embodiment of the application provides a live display device 10, the live display device 10 comprises a test polar plate 210, a display component 220 and a control component 230, when in use, the test polar plate 210 and a device to be tested form an induction capacitor, the induction capacitor is used for obtaining a potential difference to supply power to the display component 220 and the control component 230, the control component 230 can detect the operation voltage of the device to be tested, and the display component 220 is controlled to present different display states according to the operation voltage; thus, when the charged display device 10 of the embodiment of the application measures the operating voltage of the equipment to be measured, the charged display device can work without an additional external power supply or any external lead, has a simple structure and is easy to implement, and can control the display assembly 220 to present different display states for the operating voltages of the equipment to be measured, has obvious display effect, is convenient for operation and inspection personnel to intuitively know the real-time operating voltage of the equipment to be measured, and improves the flexibility of the charged display in measuring and displaying the operating voltage of the equipment to be measured. The following is a specific implementation of the charged display device 10 according to an embodiment of the present application.
Referring to fig. 1, an embodiment of the present application provides a charged display device 10, wherein the charged display device 10 includes a test pad 210, a display assembly 220, and a control assembly 230.
The test plate 210 is used to form an induced capacitance with the device under test and to obtain a potential difference to power the display assembly 220 and the control assembly 230.
In embodiments of the present application, the potential difference is acquired in dependence on the test plate 210. The live display device 10 may be mounted on a high voltage copper bar of the device under test, the high voltage copper bar corresponding to a high voltage terminal plate 310, the ground corresponding to a ground plane plate 320, and the test plate 210 between the high voltage copper bar and the ground.
Referring to fig. 2, fig. 2 is a schematic diagram illustrating the positions of a high voltage end plate 310 (P1), a test plate 210 (P2), and a ground plate 320 (P3). An induction capacitor C1 is formed between the test electrode plate 210 and the high-voltage copper bar, an induction capacitor C2 is formed between the test electrode plate 210 and the ground, two induction capacitors C1 and C2 are formed between the high-voltage copper bar, the test electrode plate 210 and the ground in series, a potential difference E1 is obtained on the induction capacitor C1, and the potential difference E1 can supply power to the display component 220 and the control component 230 in the electrified display device 10.
The control component 230 is configured to detect the operating voltage of the device under test, and control the display component 220 to present different display states according to the operating voltage.
In one possible implementation, the display state includes the brightness of the display component 220, and the brightness of the display component 220 may be proportional to the magnitude of the operating voltage, that is, the control component 230 controls the display component 220 to present a display state with higher brightness if the greater the operating voltage of the device under test is detected.
As an embodiment, the mapping relationship between the voltage interval of each operating voltage and the brightness level of the display component 220 may be stored in the live display device 10, and after detecting the operating voltage of the device to be tested, the control component 230 searches the mapping relationship for the voltage interval corresponding to the operating voltage, so as to determine the brightness level corresponding to the voltage interval.
In another possible embodiment, the display status includes the flashing frequency of the display component 220, and the flashing frequency of the display component 220 may be proportional to the magnitude of the operating voltage, i.e., the control component 230 controls the flashing frequency of the display component 220 to be higher if the greater the operating voltage of the device under test is detected.
Referring to fig. 3, fig. 3 is a control schematic diagram of an exemplary control assembly 230.
As an embodiment, the mapping relationship between the voltage interval of each operating voltage and the flash frequency of the display component 220 may be stored in the live display apparatus 10, and after the control component 230 detects the operating voltage of the device to be tested through voltage sampling, the voltage interval corresponding to the operating voltage is searched in the mapping relationship, so as to determine the flash frequency corresponding to the voltage interval.
In another possible implementation, the display state may also include the brightness and flash frequency of the display assembly 220. The brightness is proportional to the operating voltage, and the flash frequency is proportional to the operating voltage, that is, the greater the operating voltage of the device to be tested is, the display component 220 presents a display state with higher brightness, and the greater the operating voltage of the device to be tested is, the higher the flash frequency of the display component 220 is.
In the embodiment of the present application, the purpose of controlling the display state of the display component 220 is that under the condition of high voltage electrification, the electrified display device 10 can provide a warning effect in time, and the electrified display device 10 often needs to be installed in a scene of different voltage levels, the electrified display device 10 in the embodiment of the present application can present different display states for different levels of operation voltage control display components 220, so that reasonable changes of operation voltages can be considered.
In the above embodiment of the charged display device 10, the charged display device 10 includes the test electrode plate 210, the display component 220 and the control component 230, when in use, the test electrode plate 210 and the device under test form a sensing capacitor, the sensing capacitor is used to obtain a potential difference to power the display component 220 and the control component 230, the control component 230 can detect the operating voltage of the device under test, and control the display component 220 to present different display states according to the operating voltage; thus, when the charged display device 10 of the embodiment of the application measures the operating voltage of the equipment to be measured, the charged display device can work without an additional external power supply or any external lead, has a simple structure and is easy to implement, and can control the display assembly 220 to present different display states for the operating voltages of the equipment to be measured, has obvious display effect, is convenient for operation and inspection personnel to intuitively know the real-time operating voltage of the equipment to be measured, and improves the flexibility of the charged display in measuring and displaying the operating voltage of the equipment to be measured.
In one embodiment, based on the embodiment shown in fig. 2, the live display device 10 may further include a boost component 240, where the boost component 240 is connected in parallel with the sensing capacitor, and the boost component 240 is configured to boost the potential difference obtained based on the sensing capacitor to a preset multiple when the live display device 10 is in use.
In embodiments of the present application, the potential difference is acquired in dependence on the test plate 210, the potential difference being a source of energy for the operation of the charged display device 10. However, due to the limitations of the structure and the volume of the charged display device 10, the induced capacitance potential difference is often small, so in order to obtain a very sufficient energy to maintain the operation of the charged display device 10, a boost component 240 may be further disposed in the charged display device 10, and the boost component 240 boosts the potential difference obtained based on the induced capacitance to provide a sufficient energy for the operation of the charged display device 10.
In one embodiment, the live display device 10 may further include a rectifying component 250, where an input end of the rectifying component 250 is electrically connected to an output end of the voltage boosting component 240, and the rectifying component 250 is configured to convert ac power obtained by boosting the voltage boosting component 240 into dc power. The power boosted by the boosting component 240 is ac, and the display component 220 typically uses dc. In the embodiment, the rectifier assembly 250 is arranged to convert the alternating current obtained by boosting the voltage boosting assembly 240 into direct current, so that the applicability of the embodiment is greatly improved. The rectifying component 250 may be a rectifying bridge, a rectifier, etc., and the present embodiment is not limited specifically, and may be specifically selected or set according to practical situations, and only needs to satisfy the function of converting the ac power obtained by boosting the voltage boosting component 240 into the dc power.
In one embodiment, the live display device 10 may further include an energy storage component 260, where the energy storage component 260 may be a capacitor, the energy storage component 260 is electrically connected to the output terminal of the rectifying component 250, the energy storage component 260 is configured to store the direct current converted by the rectifying component 250, and the energy storage component 260 supplies power to the display component 220 through the stored direct current.
Referring to fig. 4, fig. 4 is a schematic diagram illustrating the connection of boost assembly 240, rectifying assembly 250, and energy storage assembly 260.
After the potential difference E1 is obtained on the induction capacitor C1 formed between the test polar plate 210 and the high-voltage copper bar, the potential difference E1 is boosted and rectified by the boosting component 240 and the rectifying component 250 in sequence to obtain direct current, the energy storage component 260 stores the direct current obtained by conversion of the rectifying component 250, and the stored direct current is used for supplying power to the display component 220.
In one embodiment, referring to fig. 5, referring to the embodiment shown in fig. 2, the live display apparatus 10 of the present embodiment further includes a fixing component 100 and a housing 200, the housing 200 is disposed at one end of the fixing component 100, the other end of the fixing component 100 is used for being fixedly connected with a device to be tested, and the test electrode plate 210, the display component 220 and the control component 230 are disposed in an inner cavity of the housing 200.
The fixing assembly 100 is used as a supporting frame to provide a supporting force for the electrified display device 10, the shape of the fixing assembly 100 is not particularly limited in this embodiment, and the fixing assembly can be specifically selected according to practical situations, and only needs to satisfy the function of fixing the housing 200 and the device to be tested. The housing 200 may be made of an insulating material such as plastic, wood, rubber, etc., and the present embodiment is not particularly limited.
In one possible embodiment, referring to fig. 6-9, fig. 6 is a schematic perspective view of an exemplary charged display device 10, fig. 7 is a schematic view of an exemplary charged display device 10 at a first viewing angle, fig. 8 is a schematic view of an exemplary charged display device 10 at a second viewing angle, and fig. 9 is a schematic view of an exemplary charged display device 10 at a third viewing angle.
As shown in fig. 6-9, the fixing assembly 100 includes a fixing rod 110 and a clamping member 120, the clamping member 120 includes a first side wall and a second side wall which are oppositely disposed, the fixing rod 110 is disposed on the first side wall in a penetrating manner, one end of the fixing rod 110 is fixedly connected with the housing 200, and the other end of the fixing rod 110 is used for fixing the copper bar of the device to be tested on the inner surface of the second side wall.
When the electrified display device 10 is in use, the copper bar of the device to be tested can be fixed between one end of the shell 200 and the inner surface of the second side wall based on the principle of the fixed rod 110, thus, an induction capacitor C1 is formed between the test polar plate 210 in the shell 200 and the copper bar of the device to be tested, an induction capacitor C2 is formed between the test polar plate 210 and the ground, two induction capacitors C1 and C2 are formed between the copper bar, the test polar plate 210 and the ground in series, a potential difference E1 is obtained on the induction capacitor C1, then the potential difference E1 is boosted and rectified by the boosting component 240 and the rectifying component 250 in sequence in the shell 200 to obtain direct current, and the energy storage component 260 in the shell 200 stores the direct current converted by the rectifying component 250 and supplies power to the display component 220 through the stored direct current.
In a possible embodiment, referring to fig. 6 to 9, the display assembly 220 may include a plurality of indicator lamps regularly distributed on a surface of the side of the housing 200 away from the fixing assembly 100, so as to enhance the brightness of the charged display of the display assembly 220.
The live display device 10 of the embodiment can be directly installed on a high-voltage copper bar of equipment to be tested, and the situation that adjacent inter-phase interference does not exist among A, B, C three phases of the equipment to be tested improves the accuracy of voltage sampling and live display of the live display device 10. In addition, the live display device 10 of the present embodiment has a larger operating voltage range, and the operating voltage range of 6-40kV is able to be adequate for most power transmission and distribution equipment and lines.
In one embodiment, based on the embodiment shown in fig. 2, the live display apparatus 10 of the present embodiment may further include a communication component for transmitting the magnitude of the operation voltage to the terminal under the control of the control component 230.
After the control component 230 detects the operation voltage of the device to be tested, the display component 220 is controlled to present different display states according to the operation voltage, and the operation voltage is sent to the terminal of the operation checking personnel through the communication component, so that the operation checking personnel can know the operation voltage of the device to be tested in time, the operation voltage of the device to be tested is output through various modes, and the use flexibility of the electrified display is improved.
An embodiment of the present application further provides an electrified measurement system, where the electrified measurement system includes a device to be measured and an electrified display device 10, where the device to be measured may be an electrical device such as a circuit breaker, a main transformer, a switch cabinet, and the like. The live display device 10 is used for detecting the operation voltage of the device under test, and controlling the display component 220 of the live display device 10 to present different display states according to the operation voltage.
The powered display device 10 may include, among other things, a test pad 210, a display assembly 220, and a control assembly 230. The test plate 210 is used to form a sensing capacitor with the device under test, and the sensing capacitor is used to obtain a potential difference to power the display assembly 220 and the control assembly 230; the control component 230 is configured to detect the operating voltage of the device under test, and control the display component 220 to present different display states according to the operating voltage.
Alternatively, the display state may include the brightness of the display assembly 220, which is proportional to the magnitude of the operating voltage, and the flash frequency, which is proportional to the magnitude of the operating voltage.
Optionally, the live display device 10 may further include a boost component 240, where the boost component 240 is connected in parallel with the sensing capacitor, and where the boost component 240 is configured to boost the potential difference obtained based on the sensing capacitor to a preset multiple when the live display device 10 is in use.
Optionally, the live display device 10 may further include a rectifying component 250, where an input end of the rectifying component 250 is electrically connected to an output end of the voltage boosting component 240, and the rectifying component 250 is configured to convert ac obtained by boosting the voltage boosting component 240 into dc.
Optionally, the live display device 10 may further include an energy storage component 260, where the energy storage component 260 may be a capacitor, the energy storage component 260 is electrically connected to the output terminal of the rectifying component 250, and the energy storage component 260 is used to store the direct current converted by the rectifying component 250.
Optionally, the electrified display apparatus 10 further includes a fixing component 100 and a housing 200, the housing 200 is disposed at one end of the fixing component 100, the other end of the fixing component 100 is fixedly connected with the device under test, and the test electrode plate 210, the display component 220 and the control component 230 are disposed in the inner cavity of the housing 200.
Optionally, the fixing assembly 100 includes a fixing rod 110 and a clamping member 120, where the clamping member 120 includes a first side wall and a second side wall that are disposed opposite to each other, the fixing rod 110 is disposed through the first side wall, one end of the fixing rod 110 is fixedly connected to the housing 200, and the other end of the fixing rod 110 is used for fixing the copper bar of the device to be tested on the inner surface of the second side wall.
Alternatively, the display assembly 220 may include a plurality of indicator lamps regularly distributed on a side surface of the housing 200 remote from the fixing assembly 100.
Optionally, the live display device 10 may further comprise a communication component for sending the magnitude of the operating voltage to the terminal under the control of the control component 230.
The specific embodiments and advantages of the charged display device 10 are described in detail in the above embodiments, and are not described herein.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (10)

1. The live display device is characterized by comprising a test polar plate, a display component, a control component, a boosting component, a rectifying component and an energy storage component; the charged display device is arranged on a high-voltage copper bar of the equipment to be tested, and the test polar plate is positioned between the high-voltage copper bar and the ground;
the test polar plate is used for forming a first induction capacitor with the high-voltage copper bar of the equipment to be tested, and forming a second induction capacitor with the ground, the high-voltage copper bar, the first induction capacitor and the second induction capacitor formed between the test polar plate and the ground are connected in series, and the first induction capacitor is used for obtaining a potential difference to supply power to the display assembly and the control assembly;
the boosting component is connected with the first induction capacitor in parallel and is used for boosting the potential difference obtained based on the first induction capacitor to a preset multiple;
the input end of the rectifying component is electrically connected with the output end of the boosting component, and the rectifying component is used for converting alternating current obtained by boosting of the boosting component into direct current;
the energy storage component is electrically connected with the output end of the rectifying component and is used for storing direct current obtained by conversion of the rectifying component; the direct current is used for supplying power to the display assembly and the control assembly;
the control component is used for detecting the operation voltage of the equipment to be tested and controlling the display component to present different display states according to the operation voltage.
2. A charged display device according to claim 1, wherein the rectifying assembly comprises a rectifier bridge or rectifier.
3. A charged display device according to claim 1 or 2, wherein the energy storage component comprises a capacitor.
4. A charged display device according to claim 1, characterized in that the charged display device further comprises:
a fixing assembly;
the shell is arranged at one end of the fixing component, and the other end of the fixing component is fixedly connected with the equipment to be tested;
the test polar plate, the display component and the control component are arranged in the inner cavity of the shell.
5. A charged display device according to claim 4 wherein the fixing assembly comprises:
a fixed rod;
the clamping piece comprises a first side wall and a second side wall which are oppositely arranged, the fixing rod penetrates through the first side wall, one end of the fixing rod is fixedly connected with the shell, and the other end of the fixing rod is used for fixing the copper bar of the device to be tested on the inner surface of the second side wall.
6. A charged display device according to claim 4 wherein the display assembly comprises a plurality of indicator lights regularly distributed on a side surface of the housing remote from the fixed assembly.
7. A charged display device according to claim 1 wherein the display state comprises brightness and flash frequency of the display assembly;
wherein the brightness is proportional to the magnitude of the operating voltage; the flash frequency is proportional to the magnitude of the operating voltage.
8. A charged display device according to claim 1, characterized in that the charged display device further comprises:
and the communication component is used for sending the operating voltage to the terminal under the control of the control component.
9. A charged display device according to claim 1, characterized in that the operating voltage of the charged display device is in the range of 6-40kV.
10. An electrified measurement system, the electrified measurement system comprising:
a device under test;
the live display device according to any one of claims 1-9, wherein the live display device is configured to detect a magnitude of an operating voltage of the device under test, and control a display component of the live display device to present different display states according to the magnitude of the operating voltage.
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