CN206431274U - A kind of signal transmitting apparatus - Google Patents
A kind of signal transmitting apparatus Download PDFInfo
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- CN206431274U CN206431274U CN201720131115.3U CN201720131115U CN206431274U CN 206431274 U CN206431274 U CN 206431274U CN 201720131115 U CN201720131115 U CN 201720131115U CN 206431274 U CN206431274 U CN 206431274U
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- electric energy
- energy meter
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- electrical converter
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Abstract
The utility model embodiment discloses a kind of signal transmitting apparatus, electromagnetic compatibility test for electric energy meter, electric energy meter to be tested is located in anechoic chamber, device includes electric energy meter calibration device, the power interface of electric energy meter calibration device is connected with the power interface of electric energy meter, a wave filter of being connected on its connection line；The device also includes the first optical-electrical converter and the second optical-electrical converter, the signaling interface of the signaling interface of electric energy meter and the first optical-electrical converter, the second optical-electrical converter and electric energy meter calibration device is sequentially connected, wherein, the first optical-electrical converter is connected by optical fiber with the second optical-electrical converter.A kind of signal transmitting apparatus that the utility model embodiment is provided, the test signal for being produced electric energy meter in electromagnetic compatibility test by optical-electrical converter is converted to optical signal by electric signal, the transmitting procedure of optical signal will not disturbed by electromagnetic signal, ensure that the degree of accuracy of test result.
Description
Technical field
The utility model is related to Application of Power Metering Instruments technical field of electromagnetic compatibility measurement, more particularly to a kind of to be used for signal
Transmitting device.
Background technology
With the propulsion of intelligent power network, intelligent meter progressively instead of traditional watch counter device.Intellectuality meter
The signal access or signal outflow for measuring instrument use electric signal, in huge, complicated network system, if Intellectualized metering instrument
The Electro Magnetic Compatibility of table is poor, will by electromagnetic disturbance present in the environment of place, so as to influence the accuracy of metric results,
And the near interests for closing each side such as generating, transmission of electricity, electricity consumption of accuracy of metric results.
For example, electric energy meter before being taken into use, is required to by electromagnetic compatibility as a kind of measurement instrument for measuring electric energy
Property calibrating, to ensure its electric energy metrical standard for meeting default class of accuracy.If the Electro Magnetic Compatibility of electric energy meter is poor, it will
Bring malfunction, tripping etc. to measure the serious consequence such as inaccurate, directly threaten the safety and reliability of Operation of Electric Systems.
In the prior art, when carrying out electromagnetic compatibility test to electric energy meter, the test signal that electric energy meter is produced is in transmitting procedure
In, the interference of electromagnetic signal around is subjected to, causes test signal distortion, and then have impact on to electric energy meter Electro Magnetic Compatibility
Accurate evaluation.
Utility model content
Provided in the utility model embodiment it is a kind of be used for signal transmitting apparatus, to solve electric energy meter in the prior art
Electromagnetic compatibility test signal is caused test signal distortion in transmitting procedure by electromagnetic interference, so as to influence accurate evaluation electricity
The problem of energy table Electro Magnetic Compatibility.
In order to solve the above-mentioned technical problem, the utility model embodiment discloses following technical scheme：
A kind of signal transmitting apparatus, for the electromagnetic compatibility test of electric energy meter, electric energy meter to be tested is located at anechoic chamber,
Interior, described device includes the electric energy meter calibration device being placed in outside anechoic chamber, and electric energy meter calibration device includes two interfaces, is respectively
The power interface of electric energy meter calibration device and the signaling interface of electric energy meter calibration device, power interface and the electricity of the electric energy meter calibration device
The power interface of energy table is connected, on the connection line of the power interface of the electric energy meter calibration device and the power interface of electric energy meter
Connect a wave filter；
Described device also includes the first optical-electrical converter and the second optical-electrical converter, and first optical-electrical converter is located at institute
State inside anechoic chamber, second optical-electrical converter is located on the first interface through walls of the anechoic chamber, or the electric wave is dark
Outdoor；
The letter of the signaling interface of electric energy meter and first optical-electrical converter, the second optical-electrical converter and electric energy meter calibration device
The annexation of number interface phase, is specifically included：
The signaling interface of electric energy meter is connected by wire with the signaling interface of first optical-electrical converter；Described first
The optical fiber interface of optical-electrical converter is connected by optical fiber with the optical fiber interface of the second optical-electrical converter；Second photoelectricity
The signaling interface of converter is connected by wire with the signaling interface of electric energy meter calibration device.
Preferably, first optical-electrical converter is multi-epitope optical-electrical converter.
Preferably, the power interface of the electric energy meter calibration device is connected with the power interface of electric energy meter, specifically includes, institute
State provided with electric energy meter test dial framework inside anechoic chamber, electric energy meter passes through the electric energy meter and tests dial framework and the electric energy meter calibration
Device is connected.
Preferably, the wall of the anechoic chamber, is provided with the second interface through walls, and the wave filter is installed in anechoic chamber,
The second interface through walls on.
Preferably, the optical fiber is single line optical fiber.
A kind of signal transmitting apparatus provided from above technical scheme, the utility model embodiment, is turned by photoelectricity
The test signal that parallel operation produces electric energy meter in electromagnetic compatibility test is converted to optical signal by electric signal, and optical signal is transmitted across
Journey will not disturbed by electromagnetic signal, ensure that the degree of accuracy of test result.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, for ordinary skill people
For member, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of structural representation for signal transmitting apparatus that Fig. 1 provides for the utility model embodiment；
Label in Fig. 1 is expressed as：1- anechoic chamber,s, the interfaces through walls of 11- first, the interfaces through walls of 12- second, 2- electricity
Can table comparator, the power interface of 21- electric energy meter calibration devices, the signaling interface of 22- electric energy meter calibration devices, 3- wave filters, 4- electricity
Source cable, the optical-electrical converters of 51- first, the optical-electrical converters of 52- second, 6- optical fibers, 7- electric energy meters test dial framework.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the utility model, below in conjunction with this reality
With the accompanying drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that
Described embodiment is only a part of embodiment of the utility model, rather than whole embodiments.Based on the utility model
In embodiment, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, should all belong to the scope of the utility model protection.
During the electromagnetic compatibility test of electric energy meter, electric energy meter to be tested is located in anechoic chamber, in anechoic chamber,
Electromagnetic signal electromagnetic interference is caused to the test signal of electric energy meter, disturb collection of the electric energy meter calibration device to test signal,
So as to have impact on the accuracy of test result.A kind of signal transmitting apparatus that the utility model embodiment is provided, it is adaptable to electric energy
The electromagnetic compatibility test of table, can effectively prevent the test signal of electric energy meter in transmitting procedure by electromagnetic interference.
The structural representation for a kind of signal transmitting apparatus that Fig. 1 provides for the utility model embodiment, as shown in figure 1, letter
Number transmitting device includes electric energy meter calibration device 2, and electric energy meter calibration device 2 is placed in outside anechoic chamber, 1, and electric energy meter calibration device 2 includes
The power interface 21 of two interfaces, respectively electric energy meter calibration device and the signaling interface 22 of electric energy meter calibration device.Wherein, electric energy meter
The power interface 21 of comparator is used to convey electric energy to electric energy meter, and the signaling interface 22 of electric energy meter calibration device is used to receive electric energy meter
Test signal.
The power interface 21 of electric energy meter calibration device is electrically connected with the power interface of electric energy meter, in the present embodiment, electric energy meter inspection
The power interface 21 for determining device is connected by power cable 4 with the power interface of electric energy meter.Electric energy meter calibration device is defeated to electric energy meter
Power transmission energy, for the operation work of electric energy meter, in the present embodiment, electric energy is sent to electric energy meter with electric current, voltage form.
It is distorted in transmitting procedure by electromagnetic interference in order to avoid voltage signal, produces harmonic wave, the present embodiment
In, a wave filter 3 of being connected on connection line of the electric energy meter calibration device 2 with electric energy meter.When electric current, voltage signal are examined by electric energy meter
When determining device and being delivered to electric energy meter, the harmonic wave that wave filter will be filtered out in predeterminated frequency, influence of the reduction harmonic wave to electric energy meter.Meanwhile,
Wave filter can also filter out other harmonic waves in surrounding environment, and limitation filtering enters anechoic chamber, reduce further harmonic wave to electricity
Can table interference, so that it is guaranteed that electric energy meter obtains more pure electric current, a voltage signal.When electric current, voltage signal are by electricity
When energy table is back to electric energy meter calibration device, wave filter can filter the harmonic wave in loop, so as to reduce harmonic wave to electric energy meter calibration device
Influence.
The position of wave filter can be adjusted according to actual conditions, and the change of filter location has no effect on the reality of its function
It is existing, therefore, concrete restriction is not carried out to the position of wave filter herein.In the present embodiment, the wave filter is installed in anechoic chamber, 1
External wall on, anechoic chamber, 1 provided with one run through anechoic chamber, wall the second interface 12 through walls, the input of wave filter with
Electric energy meter calibration device is electrically connected, and the output end of wave filter is connected by the second interface 12 through walls with electrical energy meter electricity.
Electromagnetic compatibility test is carried out to electric energy meter, includes missing for characterizing the test signal of electric energy meter Electro Magnetic Compatibility
The signals such as difference, pulse.If electric energy meter sends error, the signal such as pulse by cable, the test signal such as error, pulse will be by
Electromagnetic interference, so as to influence the accuracy of test data.In order to prevent the electromagnetic signal in anechoic chamber, from being surveyed to error, pulse etc.
Trial signal is produced in interference, the present embodiment, the test signals such as error, pulse is converted into optical signal by electric signal, optical signal exists
By electromagnetic interference, the degree of accuracy of test result will not be ensured that in transmitting procedure, and its specific implementation is as follows：
Signal transmitting apparatus includes the first optical-electrical converter 51 and the second optical-electrical converter 52, wherein, the first opto-electronic conversion
Device 51 is located inside anechoic chamber, 1, and the second optical-electrical converter 52 is located on the first interface 11 through walls of anechoic chamber, 1 or positioned at electricity
Outside ripple darkroom 1.
The signaling interface of first optical-electrical converter 51 is used for the signaling interface for connecting electric energy meter, the first optical-electrical converter 51
Optical fiber interface connects the optical fiber interface of the second optical-electrical converter 52 by optical fiber 6, and the first optical-electrical converter 51 is by electric energy meter
The test signal produced in electromagnetic compatibility test is converted into optical signal by electric signal, and the optical signal after conversion is passed through into light guide
Fiber 6 is delivered to the second optical-electrical converter 52.
The signaling interface of second optical-electrical converter 52 is connected by wire with the signaling interface 22 of electric energy meter calibration device, institute
State the second optical-electrical converter and receive optical signal, meanwhile, by optical signal converted back into electric signals, and pass through the signal of electric energy meter calibration device
Optical signal is delivered to electric energy meter calibration device by interface.
In actual applications, the test signals such as error, pulse are sent to the first optical-electrical converter by electric energy meter by wire；
First optical-electrical converter receives the test signals such as error, pulse and is translated into corresponding optical signal；First optical-electrical converter
Second optical-electrical converter is sent optical signals to by optical fiber.Because electric energy meter calibration device receives electric signal, therefore, second
The optical signal that optical-electrical converter transmits the first optical-electrical converter converts back into electric signals, then, is passed electromotive signal by wire
Deliver to the signaling interface of electric energy meter calibration device.
In the present embodiment, the first optical-electrical converter is multi-epitope optical-electrical converter, can provide mistake simultaneously for several table energy tables
The access port of information is tested in difference, pulse etc., can carry out electromagnetic compatibility test to multiple electric energy meters.In the present embodiment, the first photoelectricity
Converter is provided with 6 signaling interfaces, and certainly, those skilled in the art, number that can be according to actual needs to signaling interface is carried out
Adjustment, it is in protection domain of the present utility model.
In the present embodiment, the optical fiber of the first optical-electrical converter of connection and the second optical-electrical converter is single line optical fiber, phase
Compared with two-wire optical fiber, ensure test signal can accurately, quickly transmit on the premise of, single line optical fiber can save the light of half
Fine usage amount, reduces testing cost.
In the present embodiment, dial framework 7 is tested in the inside of anechoic chamber, 1 provided with electric energy meter, and electric energy meter tests dial framework 7 by electric energy meter
It is connected with electric energy meter calibration device 2.Certainly, those skilled in the art can adjust electric energy meter test dial framework according to actual needs
Number, it belongs to the protection domain of this area.For example, in the present embodiment, provided with 3 electric energy meter test tables in anechoic chamber, 1
Frame, 3 electric energy meter test dial frameworks access circuit in mode parallel with one another, and each electric energy meter test dial framework connects an electric energy respectively
Table, so that it is guaranteed that applying identical voltage at the equal two ends of each electric energy meter, it is thereby achieved that carry out supplying to multiple electric energy meters simultaneously
Electricity.
It should be noted that herein, the relational terms of such as " first " and " second " or the like are used merely to one
Individual entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operate it
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Cover including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include those
Key element, but also other key elements including being not expressly set out, or also include for this process, method, article or set
Standby intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in the process including the key element, method, article or equipment.
Described above is only embodiment of the present utility model, is made skilled artisans appreciate that or realizing this
Utility model.A variety of modifications to these embodiments will be apparent to one skilled in the art, institute herein
The General Principle of definition can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.
Therefore, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and original disclosed herein
The reason most wide scope consistent with features of novelty.
Described above is only embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (5)
1. a kind of signal transmitting apparatus, for the electromagnetic compatibility test of electric energy meter, electric energy meter to be tested is located at anechoic chamber, (1)
It is interior, it is characterised in that described device includes being placed in the outside electric energy meter calibration device (2) of anechoic chamber, (1), electric energy meter calibration device
(2) signaling interface (22) of two interfaces, the respectively power interface (21) of electric energy meter calibration device and electric energy meter calibration device is included,
The power interface (21) of the electric energy meter calibration device is connected with the power interface of electric energy meter, the power supply of the electric energy meter calibration device
Interface is connected a wave filter (3) with the connection line of the power interface of electric energy meter；
Described device also includes the first optical-electrical converter (51) and the second optical-electrical converter (52), first optical-electrical converter
(51) it is located at the anechoic chamber, (1) inside, second optical-electrical converter (52) is worn positioned at the first of the anechoic chamber, (1)
On wall interface (11) or the anechoic chamber, (1) outside；
The signaling interface of electric energy meter and first optical-electrical converter (51), the second optical-electrical converter (52) and electric energy meter calibration device
Signaling interface (22) be sequentially connected, its annexation is specifically included：
The signaling interface of electric energy meter is connected by wire with the signaling interface of first optical-electrical converter (51)；Described first
The optical fiber interface of optical-electrical converter (51) is connected by optical fiber (6) with the optical fiber interface of the second optical-electrical converter (52)；
The signaling interface of second optical-electrical converter (52) is connected by wire with the signaling interface (22) of electric energy meter calibration device.
2. signal transmitting apparatus according to claim 1, it is characterised in that first optical-electrical converter (51) is multilist
Position optical-electrical converter.
3. signal transmitting apparatus according to claim 1, it is characterised in that the power interface of the electric energy meter calibration device with
The power interface of electric energy meter is connected, and specifically includes, provided with electric energy meter test dial framework (7), electric energy inside the anechoic chamber, (1)
Table is tested dial framework (7) by the electric energy meter and is connected with the electric energy meter calibration device (2).
4. signal transmitting apparatus according to claim 1, it is characterised in that the wall of the anechoic chamber, (1) is provided with
Second interface (12) through walls, the wave filter (3) is installed on the second interface (12) through walls of anechoic chamber,.
5. signal transmitting apparatus according to claim 1, it is characterised in that the optical fiber (6) is single line optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720131115.3U CN206431274U (en) | 2017-02-13 | 2017-02-13 | A kind of signal transmitting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720131115.3U CN206431274U (en) | 2017-02-13 | 2017-02-13 | A kind of signal transmitting apparatus |
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| Publication Number | Publication Date |
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| CN206431274U true CN206431274U (en) | 2017-08-22 |
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| CN201720131115.3U Active CN206431274U (en) | 2017-02-13 | 2017-02-13 | A kind of signal transmitting apparatus |
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| CN (1) | CN206431274U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707222A (en) * | 2017-02-13 | 2017-05-24 | 云南电网有限责任公司电力科学研究院 | Signal transmission device |
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2017
- 2017-02-13 CN CN201720131115.3U patent/CN206431274U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707222A (en) * | 2017-02-13 | 2017-05-24 | 云南电网有限责任公司电力科学研究院 | Signal transmission device |
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