CN113281556A - Live display device and live measurement system - Google Patents
Live display device and live measurement system Download PDFInfo
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- CN113281556A CN113281556A CN202110392974.9A CN202110392974A CN113281556A CN 113281556 A CN113281556 A CN 113281556A CN 202110392974 A CN202110392974 A CN 202110392974A CN 113281556 A CN113281556 A CN 113281556A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/155—Indicating the presence of voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
Abstract
The application relates to a live display device and a live measurement system, wherein the live display device comprises a test polar plate, a display assembly and a control assembly; the test polar plate is used for forming an induction capacitor with equipment to be tested, and the induction capacitor is used for obtaining a potential difference to supply power to the display component and the control component; the control assembly is used for detecting the operating voltage of the equipment to be tested and controlling the display assembly to show different display states according to the operating voltage. The embodiment of the application can improve the flexibility of measurement and display of the running voltage of the equipment to be tested by the charged display.
Description
Technical Field
The application relates to the technical field of power grid equipment, in particular to a live display device and a live measurement system.
Background
The live display is generally installed on electrical equipment such as circuit breaker, main transformer, cubical switchboard, can directly perceivedly show whether electrical equipment has operating voltage, provides the information that electrical equipment detected department major loop voltage state to the fortune personnel of examining, prevents electric maloperation.
In the related art, the live display may be mounted on a housing of the electrical device, and the measurement of the operating voltage of the electrical device is performed according to an electric field coupling principle between a high-voltage electric field of the electrical device and a sensor of the live display. When the electrical equipment is provided with operating voltage, the prompting lamp of the electrified display is always on.
However, the use of the above-mentioned live display is limited, and the live display has poor flexibility in measuring and displaying the operating voltage of the electrical device.
Disclosure of Invention
In view of the above, it is necessary to provide a live display device and a live measurement system for solving the technical problem that the existing live display has poor flexibility in measuring and displaying the operating voltage of the electrical equipment.
In a first aspect, an embodiment of the present application provides a charged display device, where the charged display device includes a test electrode plate, a display module, and a control module;
the test polar plate is used for forming an induction capacitor with equipment to be tested, and the induction capacitor is used for obtaining a potential difference to supply power to the display component and the control component;
the control assembly is used for detecting the operating voltage of the equipment to be tested and controlling the display assembly to show different display states according to the operating voltage.
In one embodiment, the charged display device further comprises:
the boosting assembly is connected with the induction capacitor in parallel and used for boosting the potential difference obtained based on the induction capacitor to a preset multiple.
In one embodiment, the charged display device further comprises:
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 comprises:
the energy storage assembly is electrically connected with the output end of the rectifying assembly and is used for storing direct current converted by the rectifying assembly.
In one embodiment, 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 used for being fixedly connected with the equipment to be tested;
the test polar plate, the display assembly and the control assembly are arranged in the inner cavity of the shell.
In one embodiment, the fixing assembly comprises:
fixing the rod;
the clamping piece comprises a first side wall and a second side wall which are oppositely arranged, the fixed rod penetrates through the first side wall, one end of the fixed rod is fixedly connected with the shell, and the other end of the fixed rod is used for fixing the copper bar of the equipment to be tested on the inner surface of the second side wall.
In one embodiment, the display assembly comprises a plurality of indicator lights which are regularly distributed on one side surface of the shell body far away from the fixing assembly.
In one embodiment, the display state includes a brightness and a flash frequency of the display component;
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 comprises:
and the communication component is used for sending the magnitude of the operating voltage to a terminal under the control of the control component.
In a second aspect, an embodiment of the present application provides a live measurement system, including:
a device to be tested;
the charged display device according to any one of the first aspect, wherein the charged display device is configured to detect a magnitude of an operating voltage of the device under test, and control a display component of the charged display device to display different display states according to the magnitude of the operating voltage.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
the electrified display device comprises a test polar plate, a display component and a control component, wherein when the electrified display device is used, the test polar plate and 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 operating voltage of the equipment to be tested and control the display component to present different display states according to the operating voltage; like this, this application embodiment live display device does not need extra external power supply can work when measuring the operating voltage's of the equipment that awaits measuring size, also need not external any lead wire, and simple structure easily implements, and to the operating voltage of the different sizes of the equipment that awaits measuring, can control display element and present different display states, and the display effect is obvious, and the real-time operating voltage of the equipment that awaits measuring is known directly perceivedly to the fortune of being convenient for inspector, has promoted the measurement of the operating voltage of the equipment that awaits measuring of electrified display and the flexibility that shows.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a charged display device according to an embodiment of the present application;
FIG. 2 is a schematic illustration of the positions of an exemplary high voltage end pad, test pad and ground pad;
FIG. 3 is a control schematic of an exemplary control assembly;
FIG. 4 is a schematic diagram illustrating the connection of an exemplary boost assembly, rectifier assembly and 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 powered display device according to another embodiment of the present application;
FIG. 8 is a schematic diagram illustrating a second viewing angle of an exemplary powered display device according to another embodiment of the present application;
fig. 9 is a schematic diagram of a third viewing angle of an exemplary charged display device according to another embodiment of the present application.
Description of reference numerals:
10. a charged display device; 100. a fixing assembly; 110. fixing the rod; 120. a fastener; 200. a housing; 210. testing the polar plate; 220. a display component; 230. a control component; 240. a boost assembly; 250. a rectifying component; 260. an energy storage assembly; 310. a high voltage end plate; 320, a ground plane plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, a power generation device and a system of the present application will be described in further detail by embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered as limiting the present application.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The embodiment of the application provides a charged display device 10, the charged display device 10 includes a test pole plate 210, a display component 220 and a control component 230, when in use, the test pole 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 magnitude of the operating voltage of the device to be tested, and control the display component 220 to present different display states according to the magnitude of the operating voltage; like this, when this application embodiment live display device 10 is measuring the magnitude of the operating voltage of equipment to be measured, do not need extra external power supply can work, also need not external any lead wire, simple structure easily implements, and to the operating voltage of the different sizes of equipment to be measured, can control display element 220 and present different display states, the display effect is obvious, be convenient for fortune inspector knows the real-time operating voltage of equipment to be measured directly perceivedly, the measurement of the operating voltage of the equipment to be measured of electrified display and the flexibility that shows have been promoted. The following is a specific embodiment of the charged display device 10 provided in the examples of the present application.
Referring to fig. 1, an embodiment of the present application provides a charged display device 10, and the charged display device 10 includes a test plate 210, a display module 220, and a control module 230.
The test pad 210 is used to form an inductive capacitance with a device under test, and is used to obtain a potential difference to supply power to the display component 220 and the control component 230.
In the present embodiment, the potential difference is obtained in dependence on the test plate 210. The live display device 10 can be mounted on a high-voltage copper bar of a device under test, the high-voltage copper bar corresponds to a high-voltage end pole plate 310, the ground corresponds to a ground plane pole plate 320, and the test pole plate 210 is located between the high-voltage copper bar and the ground.
Referring to fig. 2, fig. 2 is a schematic diagram of the positions of an exemplary high voltage end plate 310(P1), test plate 210(P2), and ground plate 320 (P3). An induction capacitor C1 is formed between the test polar plate 210 and the high-voltage copper bar, 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 high-voltage copper bar, the test polar 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 a magnitude of an operating voltage of the device under test, and control the display component 220 to display different display states according to the magnitude of the operating voltage.
In a possible embodiment, the display state includes the brightness of the display element 220, and the brightness of the display element 220 may be proportional to the magnitude of the operating voltage, that is, if the control element 230 detects that the operating voltage of the device under test is larger, the display element 220 is controlled to present the display state with higher brightness.
As an embodiment, the charged display device 10 may store a mapping relationship between a voltage interval of each operating voltage and a brightness level of the display component 220, and the control component 230 searches a voltage interval corresponding to the operating voltage in the mapping relationship after detecting the operating voltage of the device to be tested through voltage sampling, so as to determine the brightness level corresponding to the voltage interval.
In another possible embodiment, the display status includes a 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, that is, the control component 230 controls the flashing frequency of the display component 220 to be higher if it detects that the operating voltage of the device under test is higher.
Referring to fig. 3, fig. 3 is a control schematic of an exemplary control assembly 230.
As an embodiment, the charged display device 10 may store a mapping relationship between a voltage interval of each operating voltage and a flash frequency of the display component 220, and after the control component 230 detects the operating voltage of the device under test through voltage sampling, the control component searches for the voltage interval corresponding to the operating voltage 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 flashing frequency of the display assembly 220. The brightness is in direct proportion to the size of the operating voltage, and the flashing frequency is in direct proportion to the size of the operating voltage, that is, the larger the operating voltage of the device to be tested is, the higher the brightness of the display component 220 is, and the larger the operating voltage of the device to be tested is, the higher the flashing frequency of the display component 220 is.
In the embodiment of the present application, the purpose of controlling the display state of the display module 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 is often required to be installed in scenes with different voltage levels, and the electrified display device 10 in the embodiment of the present application can control the display module 220 to present different display states to the operating voltage at different levels, so that the reasonable change of the operating voltage can be considered.
In the electrified display device 10 provided in the above embodiment, the electrified display device 10 includes the test plate 210, the display component 220, and the control component 230, when in use, the test plate 210 and the device to be tested form an inductive capacitor, the inductive capacitor is used to obtain a potential difference to supply power to the display component 220 and the control component 230, and the control component 230 can detect the magnitude of the operating voltage of the device to be tested, and control the display component 220 to present different display states according to the magnitude of the operating voltage; like this, when this application embodiment live display device 10 is measuring the magnitude of the operating voltage of equipment to be measured, do not need extra external power supply can work, also need not external any lead wire, simple structure easily implements, and to the operating voltage of the different sizes of equipment to be measured, can control display element 220 and present different display states, the display effect is obvious, be convenient for fortune inspector knows the real-time operating voltage of equipment to be measured directly perceivedly, the measurement of the operating voltage of the equipment to be measured of electrified display and the flexibility that shows have been promoted.
In one embodiment, based on the embodiment shown in fig. 2, the charged display device 10 may further include a voltage boosting component 240, the voltage boosting component 240 is connected in parallel with the sensing capacitor, and when the charged display device 10 is in use, the voltage boosting component 240 is configured to boost the potential difference obtained based on the sensing capacitor to a preset multiple.
In the present embodiment, the potential difference is obtained in dependence on the test plate 210, and the potential difference is the energy source for the operation of the charged display device 10. However, due to the structural and volume limitations of the charged display device 10, the induced capacitance potential difference is often small, and therefore, in order to obtain very sufficient energy to maintain the operation of the charged display device 10, the voltage boosting component 240 may be further disposed in the charged display device 10, and the voltage boosting component 240 boosts and amplifies the potential difference obtained based on the induced capacitance to provide 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, 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 the ac power boosted by the voltage boosting component 240 into dc power. The boosting component 240 boosts the electric energy to ac, while the display component 220 generally uses dc. In this embodiment, the rectifier component 250 is arranged to convert the ac power obtained by boosting the voltage of the voltage boosting component 240 into dc power, so that the applicability of this embodiment is greatly improved. The rectifying component 250 may be a rectifying bridge, a rectifier, or the like, and this embodiment is not particularly limited, and may be specifically selected or set according to an actual situation, and only needs to satisfy a function of converting the ac power obtained by boosting the voltage by the voltage boosting component 240 into the dc power.
In one embodiment, the charged 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 end 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 the boosting assembly 240, the rectifying assembly 250 and the energy storage assembly 260.
After an induction capacitor C1 is formed between the test pole plate 210 and the high-voltage copper bar to obtain a potential difference E1, the potential difference E1 is subjected to voltage boosting and rectification sequentially through the voltage boosting assembly 240 and the rectifying assembly 250 to obtain direct current, the energy storage assembly 260 stores the direct current converted by the rectifying assembly 250, and the display assembly 220 is supplied with power through the stored direct current.
In an embodiment, based on the embodiment shown in fig. 2, referring to fig. 5, the live display device 10 of the present embodiment further includes a fixing component 100 and a casing 200, the casing 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 pole plate 210, the display component 220 and the control component 230 are disposed in an inner cavity of the casing 200.
The fixing component 100 serves as a support frame to provide a supporting force for the live display device 10, and the shape of the fixing component 100 is not specifically limited in the embodiment, and can be specifically selected according to actual conditions, and only the function of fixing the housing 200 and the device to be tested can be achieved. The housing 200 may be made of an insulating material, such as plastic, wood, rubber, etc., and the embodiment is not particularly limited.
In one possible implementation, 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 a first viewing angle of an exemplary charged display device 10, fig. 8 is a schematic view of a second viewing angle of an exemplary charged display device 10, and fig. 9 is a schematic view of a third viewing angle of an exemplary charged display device 10.
As shown in fig. 6 to 9, the fixing assembly 100 includes a fixing rod 110 and a clip 120, the clip 120 includes a first side wall and a second side wall which are oppositely disposed, 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 under test on the inner surface of the second side wall.
When the charged display device 10 is used, the copper bar of the device to be tested can be fixed between one end of the fixed rod 110 principle casing 200 and the inner surface of the second side wall, thus, an induction capacitor C1 is formed between the test pole plate 210 in the casing 200 and the copper bar of the device to be tested, an induction capacitor C2 is formed between the test pole plate 210 and the ground, two induction capacitors C1 and C2 are formed between the copper bar and the test pole plate 210 and the ground in series, a potential difference E1 is obtained on the induction capacitor C1, the potential difference E1 is boosted and rectified through the boosting assembly 240 and the rectifying assembly 250 in the casing 200 in sequence to obtain direct current, the energy storage assembly 260 in the casing 200 stores the direct current converted by the rectifying assembly 250, and the display assembly 220 is powered through the stored direct current.
In a possible embodiment, with continuing reference to fig. 6-9, the display module 220 may include a plurality of indicator lights regularly distributed on a side surface of the housing 200 away from the fixing module 100, so as to increase the brightness of the live display of the display module 220.
Electrified display device 10 of this embodiment can directly be installed on the high-voltage copper bar of equipment to be measured, does not have the condition of adjacent interphase interference between the A, B, C three-phase of equipment to be measured, has promoted electrified display device 10 voltage sampling's accuracy and the accuracy of electrified demonstration. In addition, the live display device 10 of the present embodiment has a wider operating voltage range, and the operating voltage range of 6-40kV is sufficient for most of power transmission and distribution equipment and lines.
In one embodiment, based on the embodiment shown in fig. 2, the live display device 10 of the present embodiment may further include a communication component, and the communication component is configured to send the magnitude of the operating voltage to the terminal under the control of the control component 230.
After control assembly 230 detected the operating voltage's of the equipment that awaits measuring size, display assembly 220 presents different display states according to operating voltage's size control to the terminal of personnel is examined with the size transmission of operating voltage through the communication subassembly, so that the personnel of examining can in time know the operating voltage's of the equipment that awaits measuring size, through the operating voltage's of multiple mode output equipment that awaits measuring size, has promoted electrified display's use flexibility.
An embodiment of the present application further provides a live measurement system, where the live measurement system includes a device to be measured and a live display device 10, and the device to be measured may be an electrical device such as a circuit breaker, a main transformer, and a switch cabinet. The charged display device 10 is used for detecting the magnitude of the operating voltage of the device under test, and controlling the display component 220 of the charged display device 10 to present different display states according to the magnitude of the operating voltage.
The charged 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 for forming an inductive capacitor with the device to be tested, and the inductive 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 is configured to detect a magnitude of an operating voltage of the device under test, and control the display component 220 to display different display states according to the magnitude of the operating voltage.
Alternatively, the display state may include a brightness of the display component 220 proportional to the magnitude of the operating voltage and a flashing frequency proportional to the magnitude of the operating voltage.
Optionally, the charged display device 10 may further include a voltage boosting component 240, the voltage boosting component 240 is connected in parallel with the sensing capacitor, and when the charged display device 10 is in use, the voltage boosting component 240 is configured to boost the potential difference obtained based on the sensing capacitor to a preset multiple.
Optionally, the charged display device 10 may further include a rectifying component 250, 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 the ac power boosted by the voltage boosting component 240 into dc power.
Optionally, the charged 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 end of the rectifying component 250, and the energy storage component 260 is configured to store the direct current converted by the rectifying component 250.
Optionally, the charged display device 10 further includes a fixing component 100 and a casing 200, the casing 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 pole plate 210, the display component 220 and the control component 230 are disposed in an inner cavity of the casing 200.
Optionally, the fixing assembly 100 includes a fixing rod 110 and a clip 120, the clip 120 includes a first side wall and a second side wall which are oppositely disposed, 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 to the inner surface of the second side wall.
Alternatively, the display assembly 220 may include a plurality of indicator lights regularly distributed on a side surface of the housing 200 away from the fixing assembly 100.
Optionally, the charged display device 10 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.
The detailed description and the advantageous effects of the charged display device 10 have been described in the above embodiments, and are not repeated herein.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The charged display device is characterized by comprising a test polar plate, a display assembly and a control assembly;
the test polar plate is used for forming an induction capacitor with equipment to be tested, and the induction capacitor is used for obtaining a potential difference to supply power to the display component and the control component;
the control assembly is used for detecting the operating voltage of the equipment to be tested and controlling the display assembly to show different display states according to the operating voltage.
2. The charged display device according to claim 1, further comprising:
the boosting assembly is connected with the induction capacitor in parallel and used for boosting the potential difference obtained based on the induction capacitor to a preset multiple.
3. The charged display device according to claim 2, further comprising:
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.
4. The charged display device according to claim 3, further comprising:
the energy storage assembly is electrically connected with the output end of the rectifying assembly and is used for storing direct current converted by the rectifying assembly.
5. The charged display device according to claim 1, further comprising:
a fixing assembly;
the shell is arranged at one end of the fixing component, and the other end of the fixing component is used for being fixedly connected with the equipment to be tested;
the test polar plate, the display assembly and the control assembly are arranged in the inner cavity of the shell.
6. The charged display device according to claim 5, wherein the fixing member comprises:
fixing the rod;
the clamping piece comprises a first side wall and a second side wall which are oppositely arranged, the fixed rod penetrates through the first side wall, one end of the fixed rod is fixedly connected with the shell, and the other end of the fixed rod is used for fixing the copper bar of the equipment to be tested on the inner surface of the second side wall.
7. The live display device according to claim 5, wherein the display assembly comprises a plurality of indicator lights regularly distributed on a side surface of the housing away from the fixing assembly.
8. The charged display device according to claim 1, wherein the display state comprises a brightness and a flash frequency of the display component;
wherein the brightness is proportional to the magnitude of the operating voltage; the flash frequency is proportional to the magnitude of the operating voltage.
9. The charged display device according to claim 1, further comprising:
and the communication component is used for sending the magnitude of the operating voltage to a terminal under the control of the control component.
10. A live measurement system, comprising:
a device to be tested;
the live-line display device according to any one of claims 1 to 9, wherein the live-line 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-line display device to present different display states according to the magnitude of the operating voltage.
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| CN87102003A (en) * | 1987-03-21 | 1988-10-12 | 赵为政 | Electronic acoustooptic test pencil |
| CN104075816A (en) * | 2013-06-09 | 2014-10-01 | 成都瑞霆科技有限公司 | Electric field induction electricity taking type wireless temperature measuring system |
| CN103743937A (en) * | 2014-01-28 | 2014-04-23 | 成都赛康信息技术有限责任公司 | High voltage presence indicating device and implementing method thereof |
| CN204287301U (en) * | 2014-11-04 | 2015-04-22 | 浙江江山华安电器制造有限公司 | Attached type high-voltage charge display device |
| CN104635023A (en) * | 2015-02-06 | 2015-05-20 | 四川蓝讯宝迩电子科技有限公司 | High-voltage electrification acousto-optic indicating device |
| CN205786823U (en) * | 2016-04-29 | 2016-12-07 | 上海科盾医疗器械科技有限公司 | A kind of electroscope |
| CN109521260A (en) * | 2018-11-27 | 2019-03-26 | 长兴华阁耐物流装备有限公司 | A kind of repair and maintenance high voltage electroscope |
| CN210533919U (en) * | 2019-05-31 | 2020-05-15 | 宝辰联合(廊坊)科技有限公司 | Building coating material water absorption capability test device |
| CN111257618A (en) * | 2020-01-21 | 2020-06-09 | 国网江苏省电力有限公司电力科学研究院 | Cubical switchboard contact current measurement ring with from function of getting electricity |
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