CN103941208A - Method and device for calibrating high-voltage charged display - Google Patents
Method and device for calibrating high-voltage charged display Download PDFInfo
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Abstract
The invention provides a method and device for calibrating a high-voltage charged display. The method comprises the steps that firstly, three paths of sine pulse width modulation waves are output; then, the three paths of sine pulse width modulation waves are filtered, amplified and adjusted, three paths of sine voltage signals are obtained, the three paths of sine voltage signals are used for being output to the input end of the high-voltage charged display to simulate alternating-current voltage signals inducted and output by a sensor, and therefore three paths of sine wave signals are provided for the high-voltage charged display to calibrate whether the high-voltage charged display is qualified or not, and the high-voltage charged display can be calibrated.
Description
Technical field
The application relates to high voltage power transmission technical field, more particularly, relates to a kind of method of calibration and device of high-voltage charge display device.
Background technology
The whether charged place that high-voltage charge display device device is generally arranged on that inlet wire, bus, outlet, isolating switch, main transformer, switch cubicle, GIS combined electrical apparatus and other need to show, show charged by receiving sensor induction charging conductor output San road sine wave signal, thereby prevent electric misoperation, before installation, must carry out verification and can normally work to determine it.Need a kind of method of calibration and the device that can export three road sine wave signals badly for this reason,
Summary of the invention
In view of this, the application provides a kind of method of calibration and device of high-voltage charge display device, for output, high-voltage charge display device is carried out to the required San of verification road sine voltage signal, with the ac voltage signal of analog voltage sensor sensing output, thereby high-voltage charge display device is carried out to verification.
To achieve these goals, the existing scheme proposing is as follows:
A method of calibration for high-voltage charge display device, comprises the steps:
Generate three tunnel sinusoidal signals;
Described three tunnel sinusoidal signals are carried out to pressure regulation, thereby obtain predeterminated voltage Zhi tri-road sine voltage signals;
By described three road sine voltage signals output to described high-voltage charge display device for connecting the connection terminal of voltage sensor.
Preferably, described generation three tunnel sinusoidal signals, comprise the steps:
Generate three tunnel sinusoidal pulse width modulation ripples;
Described three tunnel sinusoidal pulse width modulation ripples are carried out to digital-to-analog conversion, obtain three tunnel sinusoidal signals;
Described three road sinusoidal modulation waves are carried out to filter and amplification.
Preferably, described described three tunnel sinusoidal signals are carried out to pressure regulation, comprising:
The voltage of described three tunnel sinusoidal signals is boosted or step-down.
Preferably, before pressure regulation, the frequency of described three tunnel sinusoidal signals is 50 hertz, and voltage is 0～5 volt;
After pressure regulation, the frequency of described three road sine voltage signals is 50 hertz, and voltage is 0～100 millivolt.
A calibration equipment for high-voltage charge display device,
Signal generator, for generating three tunnel sinusoidal signals;
Regulator, for described three tunnel sinusoidal signals are carried out to pressure regulation, thereby obtains predeterminated voltage Zhi tri-road sine voltage signals;
Signal output apparatus, for exporting described three road sine voltage signals to described high-voltage charge display device for connecting the connection terminal of voltage sensor.
Preferably, described signal generator comprises:
Modulation circuit, for exporting three tunnel sinusoidal pulse width modulation ripples;
D/A converting circuit, carries out digital-to-analog conversion by described three tunnel sinusoidal pulse width modulation ripples, obtains three tunnel sinusoidal signals;
Filter amplification circuit, for carrying out filter and amplification to described three tunnel sinusoidal signals.
Preferably, described regulator is booster circuit or reduction voltage circuit.
Preferably, described signal output apparatus comprises three output branch roads, and described output branch road comprises:
Electric capacity, one end is connected with an output terminal of described regulator;
The other end of described electric capacity is as the signal output part of described output branch road.
Preferably, described output branch road also comprises:
Resistance, one end is connected with the other end of described electric capacity, other end ground connection.
Preferably, on the signal output part of described output branch road, be provided with video socket;
Described video socket is for being connected with the described connection terminal of described high-voltage charge display device by the three-phase conducting wire with screen layer;
Described shielding layer grounding.
Can find out from technique scheme, first the method for calibration of the high-voltage charge display device that the application provides and device export three tunnel sinusoidal pulse width modulation ripples, then Dui San road sinusoidal modulation wave carries out filtering, amplification and adjusting, obtain three road sine voltage signals, three road sine voltage signals are for outputing to the input end of high-voltage charge display device, with the ac voltage signal of analog sensor induction output, thereby for high-voltage charge display device provides three road sine wave signals, with verification, whether it qualified, thereby can complete the verification to high-voltage charge display device.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiment of the application, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The process flow diagram of the method for calibration of a kind of high-voltage charge display device that Fig. 1 provides for the embodiment of the present application;
The process flow diagram of the method for calibration of a kind of high-voltage charge display device that Fig. 2 provides for another embodiment of the application;
The structural drawing of the calibration equipment of a kind of high-voltage charge display device that Fig. 3 provides for the another embodiment of the application;
The structural drawing of the calibration equipment of a kind of high-voltage charge display device that Fig. 4 provides for the another embodiment of the application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiment.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the application's protection.
Embodiment mono-
The process flow diagram of the method for calibration of a kind of high-voltage charge display device that Fig. 1 provides for the embodiment of the present application.
As shown in Figure 1, the method for calibration that the present embodiment provides comprises the steps:
S101: generate three tunnel sinusoidal signals.
50 hertz of the calibrations of three tunnel sinusoidal signals, with the characteristic of the signal in the real work place of simulated high-pressure electrification display, the voltage of three tunnel sinusoidal signals is 0～5 volt.
S102: Dui San road sinusoidal signal is carried out pressure regulation and obtained the required San of verification road sine voltage signal.
Dui San road sinusoidal signal is carried out pressure regulation, obtains the required tri-road sine voltage signals of verification high-voltage charge display device.Pressure regulation comprises boosts or step-down, the demand of the voltage with the high-voltage charge display device that is applicable to different model to input signal.
S103: Jiang San road sine voltage signal outputs to high-voltage charge display device.
Be specially Jiang San road sine voltage signal output to high-voltage charge display device for connecting the connection terminal of voltage sensor sense.
Can find out from technique scheme, in the method for calibration of the high-voltage charge display device that the present embodiment provides, first generate three tunnel sinusoidal signals, then Dui San road sinusoidal signal is carried out pressure regulation and is obtained predeterminated voltage Zhi tri-road sine voltage signals, last Jiang San road sine voltage signal output to high-voltage charge display device for connecting the connection terminal of voltage sensor, with the ac voltage signal of analog sensor induction output, can for high-voltage charge display device provides three road sine voltage signals, with verification, whether it qualified, thereby can complete the verification to high-voltage charge display device.
Embodiment bis-
The process flow diagram of the method for calibration of a kind of high-voltage charge display device that Fig. 2 provides for another embodiment of the application.
As shown in Figure 2, the method for calibration that the present embodiment provides comprises the steps:
S201: generate three tunnel sinusoidal pulse width modulation ripples.
S202: Dui San road sinusoidal pulse width modulation ripple carries out digital-to-analog conversion.
Dui San road sinusoidal pulse width modulation ripple carries out digital-to-analog conversion, obtains three tunnel sinusoidal signals.
S203: Dui San road sinusoidal signal filter and amplification.
Also include harmonic wave through digital-to-analog conversion San road sinusoidal signal, this step is used harmonic filtration wherein, and filtered three road sine wave signals amplify, the sine voltage signal that output three tunnel is 0～5 volt.
S204: Dui San road sinusoidal signal is carried out pressure regulation.
Dui San road sinusoidal signal is carried out pressure regulation, obtains predeterminated voltage Zhi tri-road sine voltage signals.Pressure regulation is for boosting or step-down, the demand of the voltage with the high-voltage charge display device that is applicable to different model to input signal.
S205: Jiang San road sine voltage signal outputs to high-voltage charge display device.
Be specially Jiang San road sine voltage signal output to high-voltage charge display device for connecting the connection terminal of voltage sensor.
50 hertz of the calibrations of the present embodiment Zhong tri-road sine voltage signals, preferably 0～100 millivolt of voltage.
Embodiment tri-
The structural drawing of the calibration equipment of a kind of high-voltage charge display device that Fig. 3 provides for the another embodiment of the application.
As shown in Figure 3, the disclosed calibration equipment of the present embodiment comprises signal generator 10, regulator 20 and signal output apparatus 30, and wherein regulator 20 is connected with signal generator 10, signal output apparatus 30 respectively.
Signal generator 10 is for generating three tunnel sinusoidal signals.
Regulator 20 regulates for the voltage of Dui San road sinusoidal signal, thereby obtains the required tri-road sine voltage signals of verification.50 hertz of the calibrations of first three road sinusoidal signal of pressure regulation, preferably 0～5 volt of voltage; 50 hertz of the calibrations of pressure regulation Hou San road sine voltage signal, preferably 0～100 millivolt of voltage.
Signal output apparatus 30 for pressure regulation Hou tri-road sine voltage signals are outputed to high-voltage charge display device 40 for connecting the connection terminal (not shown) of voltage sensor sense, so that high-voltage charge display device 40 is carried out to verification.
Can find out from technique scheme, the calibration equipment of the high-voltage charge display device that the present embodiment provides comprises signal generator, regulator and signal output apparatus, wherein, signal generator is used for generating three tunnel sinusoidal signals, regulator carries out pressure regulation for Dui San road sinusoidal signal and obtains predeterminated voltage Zhi tri-road sine voltage signals, signal output apparatus for Jiang San road sine voltage signal output to high-voltage charge display device for connecting the connection terminal of voltage sensor, with the ac voltage signal of analog sensor induction output, can for high-voltage charge display device provides three road sine voltage signals, with verification, whether it qualified, thereby can complete the verification to high-voltage charge display device.
Embodiment tetra-
The structural drawing of the calibration equipment of a kind of high-voltage charge display device that Fig. 4 provides for the another embodiment of the application.
As shown in Figure 4, the disclosed calibration equipment of the present embodiment comprises signal generator 10, regulator 20 and signal output apparatus 30, and wherein regulator 20 is connected with signal generator 10, signal output apparatus 30 respectively.
Signal generator 10 is for generating three tunnel sinusoidal signals.
Signal generator 10 comprises modulation circuit 11, D/A converting circuit 12 and filter amplification circuit 13.
Modulation circuit 11 is for exporting three tunnel sinusoidal pulse width modulation ripples, and modulation circuit 11 is generally single-chip microcomputer, can be with utilizing easily program to export three tunnel sinusoidal pulse width modulation ripples;
D/A converting circuit 12 carries out digital-to-analog conversion for Jiang San road sinusoidal pulse width modulation ripple, is converted to three tunnel sinusoidal signals;
Conversion Hou tri-tunnel sinusoidal signals also include harmonic wave, and filter amplification circuit 13 use are by harmonic filtration wherein, to obtain comparatively level and smooth San road sinusoidal signal.
Regulator 20 regulates for the voltage of Dui San road sinusoidal signal, thereby obtains predeterminated voltage Zhi tri-road sine voltage signals.Regulator can be selected booster circuit or reduction voltage circuit as required, and reduction voltage circuit can be made up of the divider resistance of connecting.
50 hertz of the calibrations of first three road sinusoidal signal of pressure regulation, preferably 0～5 volt of voltage; 50 hertz of the calibrations of pressure regulation Hou San road sine voltage signal, preferably 0～100 millivolt of voltage.
Signal output apparatus 30 for pressure regulation Hou tri-road sine voltage signals are outputed to high-voltage charge display device 40 for connecting the connection terminal (not shown) of voltage sensor, so that high-voltage charge display device 40 is carried out to verification.
Signal output apparatus 30 comprises three output branch roads 31, and each output branch road 31 is provided with the capacitor C that one end is connected with the output terminal of regulator 20, and the other end of capacitor C is as an output terminal of signal output apparatus 30.Capacitor C, for by isolated to the DC voltage of high-voltage charge display device 40 and signal generator, in order to avoid signal generator 10 is damaged, also can not affect the output of three road sinusoidal voltages in addition, and capacitance is 0.47 microfarad preferably.
Each output branch road 31 is also provided with parallel resistance R, preferably 100 ohm of its resistances, and one end of parallel resistance R is connected with the other end of capacitor C, the other end ground connection of parallel resistance R.Parallel resistance R, as the fictitious load of high-voltage charge display device 40, shows abnormal for high-voltage charge display device 40 after avoiding verifying work process to remove sensor signal cable connection.
In the present embodiment, output frequency is preferably 50 hertz, preferably 0～100 millivolt of voltage.
The other end of capacitor C is provided with video socket 311 in addition, and this socket is for being connected with the connection terminal (not shown) for being connected voltage sensor of high-voltage charge display device 40.Video socket 311 is connected with the three-phase conducting wire 41 with screen layer 411 with this connection terminal, screen layer 411 ground connection, thus can carry out more accurately verification.
Lithium battery (not shown) generator power supply is also set, for powering to signal generator 10 in the present embodiment.
Finally, also it should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the application.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the case of not departing from the application's spirit or scope, realize in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a method of calibration for high-voltage charge display device, is characterized in that, comprises the steps:
Generate three tunnel sinusoidal signals;
Described three tunnel sinusoidal signals are carried out to pressure regulation, thereby obtain predeterminated voltage Zhi tri-road sine voltage signals;
By described three road sine voltage signals output to described high-voltage charge display device for connecting the connection terminal of voltage sensor.
2. method of calibration as claimed in claim 1, is characterized in that, described generation three tunnel sinusoidal signals, comprise the steps:
Generate three tunnel sinusoidal pulse width modulation ripples;
Described three tunnel sinusoidal pulse width modulation ripples are carried out to digital-to-analog conversion, obtain three tunnel sinusoidal signals;
Described three road sinusoidal modulation waves are carried out to filter and amplification.
3. method of calibration as claimed in claim 1, is characterized in that, described described three tunnel sinusoidal signals is carried out to pressure regulation, comprising:
The voltage of described three tunnel sinusoidal signals is boosted or step-down.
4. method of calibration as claimed in claim 1, is characterized in that, before pressure regulation, the frequency of described three tunnel sinusoidal signals is 50 hertz, and voltage is 0～5 volt;
After pressure regulation, the frequency of described three road sine voltage signals is 50 hertz, and voltage is 0～100 millivolt.
5. a calibration equipment for high-voltage charge display device, is characterized in that,
Signal generator, for generating three tunnel sinusoidal signals;
Regulator, for described three tunnel sinusoidal signals are carried out to pressure regulation, thereby obtains predeterminated voltage Zhi tri-road sine voltage signals;
Signal output apparatus, for exporting described three road sine voltage signals to described high-voltage charge display device for connecting the connection terminal of voltage sensor.
6. calibration equipment as claimed in claim 5, is characterized in that, described signal generator comprises:
Modulation circuit, for exporting three tunnel sinusoidal pulse width modulation ripples;
D/A converting circuit, carries out digital-to-analog conversion by described three tunnel sinusoidal pulse width modulation ripples, obtains three tunnel sinusoidal signals;
Filter amplification circuit, for carrying out filter and amplification to described three tunnel sinusoidal signals.
7. calibration equipment as claimed in claim 5, is characterized in that, described regulator is booster circuit or reduction voltage circuit.
8. calibration equipment as claimed in claim 5, is characterized in that, described signal output apparatus comprises three output branch roads, and described output branch road comprises:
Electric capacity, one end is connected with an output terminal of described regulator;
The other end of described electric capacity is as the signal output part of described output branch road.
9. calibration equipment as claimed in claim 8, is characterized in that, described output branch road also comprises:
Resistance, one end is connected with the other end of described electric capacity, other end ground connection.
10. calibration equipment as claimed in claim 9, is characterized in that, on the signal output part of described output branch road, is provided with video socket;
Described video socket is for being connected with the described connection terminal of described high-voltage charge display device by the three-phase conducting wire with screen layer;
Described shielding layer grounding.
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| CN201410127582.XA CN103941208B (en) | 2014-03-31 | 2014-03-31 | Method and device for calibrating high-voltage charged display |
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| CN201410127582.XA CN103941208B (en) | 2014-03-31 | 2014-03-31 | Method and device for calibrating high-voltage charged display |
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Cited By (2)
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| CN104730482A (en) * | 2015-03-11 | 2015-06-24 | 国网辽宁省电力有限公司辽阳供电公司 | Portable high-pressure charged display testing device |
| CN116577712A (en) * | 2023-04-04 | 2023-08-11 | 国网江苏省电力有限公司南通供电分公司 | Fault detector for ring main unit electrified display device and control method thereof |
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| CN103941208B (en) | 2017-01-18 |
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