CN105699934A - Radio near-field radiation resisting performance testing device for electric energy meter - Google Patents
Radio near-field radiation resisting performance testing device for electric energy meter Download PDFInfo
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- CN105699934A CN105699934A CN201610202711.6A CN201610202711A CN105699934A CN 105699934 A CN105699934 A CN 105699934A CN 201610202711 A CN201610202711 A CN 201610202711A CN 105699934 A CN105699934 A CN 105699934A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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Abstract
The invention provides a radio near-field radiation resisting performance testing device for electric energy meter. The radio near-field radiation resisting performance testing device includes an input unit, a single-chip microprocessor, a switch circuit, a wireless interference unit and an antenna connected in sequence. The switch circuit includes a plurality of first switch circuits. The wireless interference unit includes a plurality of frequency units. The first switch circuits, the frequency units and a plurality of predetermined frequency ranges are in one-to-one correspondence. The input unit sends a control command to the single-chip microprocessor. The control command includes information of a frequency range selected by a user. The single-chip microprocessor determines the frequency range selected by the user through control command analysis and controls the corresponding first switch circuits to be closed. When the first switch circuits are closed, the corresponding frequency units are started. The frequency units are used for generating radio signals of the corresponding frequency range. The antenna transmits the radio signals generated by the frequency units. The radio near-field radiation resisting performance testing device can be used for testing the radio near-field radiation resisting performance of the electric energy meter and the reliability of the electric energy meter can be verified through checking the metering accuracy and the resetting condition of the electric energy meter.
Description
Technical field
The present invention relates to technical field of measurement and test, in particular it relates to a kind of anti-radio near-field thermal radiation performance testing device of electric energy meter。
Background technology
In recent years, the performance requirement of electric energy meter is improved by the development of intelligent grid day by day, such as, except possessing the function of measuring of traditional electric energy meter basic electricity amount, in order to adapt to the use of intelligent grid and new forms of energy, in addition it is also necessary to have two-way multiple rate function of measuring, user side controls the intelligentized functions such as function, the bidirectional data communication function of plurality of data transmission modes, anti-stealing electricity function。
But, electric energy meter is frequently subjected to the interference of the various radio signal such as mobile phone signal, WiFi signal in day-to-day operation environment, and causes exceptional reset or function of measuring fault。
Summary of the invention
The main purpose of the embodiment of the present invention is in that to provide a kind of anti-radio near-field thermal radiation performance testing device of electric energy meter, to test the ability of electric energy meter near field resisting radiation interference, by checking that measuring accuracy of electric energy meter and reset case verify the reliability of electric energy meter。
To achieve these goals, the embodiment of the present invention provides a kind of anti-radio near-field thermal radiation performance testing device of electric energy meter, including the input block being sequentially connected with, single-chip microcomputer, on-off circuit, air interference device and antenna；Described on-off circuit includes one or more first on-off circuit；Described air interference device includes one or more frequency cells；The one or more first on-off circuit, the one or more frequency cells and default one or more frequency range one_to_one corresponding；Described input block sends control instruction to described single-chip microcomputer；Wherein, described control instruction comprises the information of the frequency range that user selects；Described single-chip microcomputer determines, by resolving described control instruction, the frequency range that described user selects, and controls the first on-off circuit Guan Bi corresponding to frequency range that described user selects；Described first on-off circuit connects corresponding frequency cells, starts corresponding frequency cells during described first on-off circuit Guan Bi；Described frequency cells is for producing the radio signal of corresponding frequency range；Described antenna is for launching the radio signal that described frequency cells produces。
Wherein in a kind of embodiment, also including a power circuit, the input incoming transport electricity of power circuit, outfan connects single-chip microcomputer, for providing running voltage for single-chip microcomputer。
Wherein in a kind of embodiment, power circuit includes the first power circuit and second source circuit, the input incoming transport electricity of second source circuit, and outfan connects the first power circuit, for alternating current being converted to the unidirectional current of constant voltage；The input of the first power circuit connects second source circuit, and outfan connects single-chip microcomputer, for the galvanic voltage that second source circuit exports is converted to the rated operational voltage of single-chip microcomputer for single-chip microcomputer。
Wherein in a kind of embodiment, on-off circuit also includes a second switch circuit, the input of second switch circuit connects second source circuit and single-chip microcomputer respectively, and outfan connects air interference device, for the unidirectional current that second source circuit exports is supplied to air interference device；Single-chip microcomputer is additionally operable to control second switch circuit and disconnects and Guan Bi。
Wherein in a kind of embodiment, also including an isolation circuit, isolation circuit connects power circuit, on-off circuit and single-chip microcomputer respectively, disturbs for isolation signals。
Wherein in a kind of embodiment, isolation circuit includes the first isolation circuit and the second isolation circuit, and the first isolation circuit connects single-chip microcomputer, the first on-off circuit respectively, disturbs for isolation signals；Second isolation circuit connects single-chip microcomputer, second source circuit, second switch circuit respectively, disturbs for isolation signals。
Wherein in a kind of embodiment, described default one or more frequency ranges include: 400MHz～470MHz, 470MHz～510MHz, 900MHz, 1800MHz and 2.4GMHz。
Wherein in a kind of embodiment, described frequency cells is provided with multiple different power gear, and described frequency cells watt level of produced radio signal when different power gear work is different；Described control instruction also comprises the power gear that user selects；Described single-chip microcomputer determines, by resolving described control instruction, the power gear that described user selects, and controls described frequency cells and work in the power gear of described user selection。
Wherein in a kind of embodiment, antenna is one or more, and with one or more frequency cells one_to_one corresponding, each antenna connects the frequency cells that it is corresponding。
Wherein in a kind of embodiment, it is one or more that input block includes in the following: keyboard；Press button；Data transmission interface。
Wherein in a kind of embodiment, also including a host computer, described host computer connects described data transmission interface, for selecting frequency range for user, generate described control instruction according to the frequency range that user selects, and described control instruction is sent to described data transmission interface。
Wherein in a kind of embodiment, also include the LCD display of a connection single-chip microcomputer。
Wherein in a kind of embodiment, the first isolation circuit and the second isolation circuit are photoelectric coupling circuit。
Wherein in a kind of embodiment, the first on-off circuit and second switch circuit are relay switching circuit。
The present invention can simulate the external world by the radio signal of control wireless device generation characteristic frequency and be applied to the interference environment of electric energy meter, and then test electric energy meter near field resisting radiation interference ability, and by checking measuring accuracy of electric energy meter and reset case checking electric energy meter reliability。
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings。
Fig. 1 is the structured flowchart of the anti-radio near-field thermal radiation performance testing device of electric energy meter that one of which embodiment of the present invention provides；
Fig. 2 is the structured flowchart of the anti-radio near-field thermal radiation performance testing device of electric energy meter that one of which embodiment of the present invention provides；
Fig. 3 is the structured flowchart of the anti-radio near-field thermal radiation performance testing device of electric energy meter that one of which embodiment of the present invention provides。
Fig. 4 is the structured flowchart of the anti-radio near-field thermal radiation performance testing device of electric energy meter that one of which embodiment of the present invention provides。
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments。Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention。
In view of existing electric energy meter running environment exists serious radio interference, embodiments provide a kind of anti-radio near-field thermal radiation performance testing device of electric energy meter, in order to test electric energy meter near field resisting radiation interference ability, by checking measuring accuracy of electric energy meter and reset case, verify electric energy meter reliability。Below in conjunction with accompanying drawing, the present invention is described in detail。
The present invention provides a kind of anti-radio near-field thermal radiation performance testing device of electric energy meter, including single-chip microcomputer 2, input block 12, on-off circuit 8, air interference device 9 and antenna 10。
As it is shown in figure 1, input block 12, single-chip microcomputer 2, on-off circuit 8, air interference device 9, antenna 10 are sequentially connected with；On-off circuit 8 includes one or more first on-off circuit 81；Air interference device 9 includes one or more frequency cells 90。
Input block 12 is for sending control instruction to single-chip microcomputer 2。Wherein, control instruction includes the information of the frequency range that user selects, and this frequency range refers to the frequency size of the radio signal of expectation generation。
Alternatively, input block 12 can include but not limited to keyboard, press button, data transmission interface etc.。If including keyboard, then keyboard selects frequency range for user, produces control command and is transmitted to single-chip microcomputer 2；If including press button, then press button selects frequency range for user, produces control command and is transmitted to single-chip microcomputer 2；If including data transmission interface, then data transmission interface is used for receiving control command and being transmitted to single-chip microcomputer 2。Alternatively, data transmission interface can be wireless transmission interface (such as Bluetooth chip, WIFI chip), it is also possible to be wire transmission interface (such as USB interface), and connects the RS232 serial ports of single-chip microcomputer 2。
Several radio interference scenarios that the present invention can be often subject in running environment according to electric energy meter, one or more frequency ranges are provided, can being such as 400MHz～470MHz, 470MHz～510MHz, 900MHz, 1800MHz and 2.4GMHz respectively, above-mentioned five frequency ranges cover electric energy meter and run the frequency range of experienced interference signal often。
In the present invention, the first on-off circuit 81, frequency cells 90 and frequency range are relation one to one。
Single-chip microcomputer 2 determines, by resolving control instruction, the frequency range that user selects, and the first on-off circuit 81 corresponding to frequency range controlling this user selection closes。Alternatively, single-chip microcomputer 2 adopts NEC0527 as master controller, and its main frequency is 16mHz, and baud rate is 195200bps。
First on-off circuit 81 connects its corresponding frequency cells 90, for starting or closing its corresponding frequency cells 90。
Frequency cells 90 is for producing the radio signal of its corresponding frequency range。When being embodied as, each frequency cells can adopt the radio transmitter module that can produce corresponding frequencies scope。
When being embodied as, all frequency cells 90 all support independent switch, and when the first on-off circuit 81 closes, corresponding frequency cells 90 produces the radio signal of corresponding frequency range。Consider the watt level situation of radio signal, when being embodied as, frequency cells 90 can be arranged multiple power gear, the watt level of the radio signal that frequency cells is launched when different power gear work is different, such as, frequency cells 90 arranges normal and two kinds of power gears of the limit, and wherein, the power of the radio signal that the power ratio of the radio signal that frequency cells is launched when normal power gear is launched when power limit gear is little。Tester can select suitable power gear according to the actual requirements。
When being embodied as, control instruction comprise the information of the power gear that user selects, and be transmitted to single-chip microcomputer 2。Single-chip microcomputer determines, by resolving control instruction, the power gear that user selects, and controls frequency cells and work in the power gear that user selects。
Wherein in a kind of embodiment, antenna 10 be one or more, antenna 10 and be relation one to one with frequency cells 90, and each antenna 10 connects its corresponding frequency cells 90, for the radio signal of tranmitting frequency unit 90 generation。
As in figure 2 it is shown, wherein in a kind of embodiment, present invention additionally comprises a power circuit 4, the input incoming transport electricity of power circuit 4, outfan connects single-chip microcomputer 2, for providing running voltage for single-chip microcomputer 2。
Alternatively, power circuit 4 includes the first power circuit 41 and second source circuit 42。The input incoming transport electricity of second source circuit 42, outfan connects the first power circuit 41, for alternating current being converted to the unidirectional current of constant voltage；The input of the first power circuit 41 connects second source circuit 42, and outfan connects single-chip microcomputer 2, is converted to the rated operational voltage of single-chip microcomputer 2 for single-chip microcomputer 2 for the galvanic voltage exported by second source circuit 42。
When being embodied as, if single-chip microcomputer 2 adopts NEC0527,220V alternating current is converted to the unidirectional current of 12V by second source circuit 42, and the first power circuit 41 is then converted to 12V unidirectional current the 5V unidirectional current working power as single-chip microcomputer 2。
When being embodied as, on-off circuit 8 can also include a second switch circuit 82, the input of second switch circuit 82 connects second source circuit 42 and single-chip microcomputer 2 respectively, and outfan connects air interference device 9, for the unidirectional current that second source circuit 42 exports is supplied to air interference device 9。Single-chip microcomputer 2 is additionally operable to control second switch circuit 82 and disconnects and Guan Bi。When second switch circuit 82 closes, air interference device 9 is started working。
Alternatively, the first on-off circuit 81 and second switch circuit 82 can adopt relay switching circuit。
As shown in Figure 2, wherein in a kind of embodiment, present invention additionally comprises an isolation circuit 6, the input of isolation circuit 6 connects second source circuit 42 and single-chip microcomputer 2, outfan connecting valve circuit 8, for realizing signal isolation between second source circuit 42, single-chip microcomputer 2 and on-off circuit 8, it is to avoid interfere。
When being embodied as, isolation circuit 6 includes the first isolation circuit 61 and the second isolation circuit 62；The input of the first isolation circuit 61 connects single-chip microcomputer 2, and outfan connects the first on-off circuit 81, for realizing signal isolation between single-chip microcomputer 2 and the first on-off circuit 81, it is to avoid interfere；The input of the second isolation circuit 62 connects second source circuit 42 and single-chip microcomputer 2, and outfan connects second switch circuit 82, for realizing signal isolation between second source circuit 42, single-chip microcomputer 2 and second switch circuit 82, it is to avoid interfere。
Alternatively, the first isolation circuit 61 and the second isolation circuit 62 can adopt photoelectric coupling circuit。
When being embodied as, user is except can passing through keyboard or press button selection frequency range, host computer (can be such as powermeter verification instrumeter or computer) can also be passed through and select frequency range, and be transferred to single-chip microcomputer 2 by data transmission interface。
As shown in Figure 3, the present invention can also include powermeter verification instrumeter 13, and powermeter verification instrumeter 13 connects data transmission interface, for selecting frequency range for tester and accordingly generate control command, then transmitting control commands is to data transmission interface, data transmission interface be transmitted to single-chip microcomputer 2。
As shown in Figure 4, the present invention can also include computer 14, and computer 14 connects data transmission interface, for selecting frequency range for tester and accordingly generate control command, then transmitting control commands is to data transmission interface, data transmission interface be transmitted to single-chip microcomputer 2。
As shown in Figure 3 or Figure 4, present invention additionally comprises the LCD display of a connection single-chip microcomputer 2。
In a preferred embodiment, the present invention can arrange multiple electric energy meter according to the actual requirements, wherein tested electric energy meter is identical with the model specification of comparison electric energy meter, and electric energy meter anti-radio near-field thermal radiation performance testing device is arranged near tested electric energy meter away from comparison electric energy meter。The specific works process of the present invention is as follows:
Powermeter verification instrumeter 13 or computer 14 comprise a frequency range and the control instruction of a power gear by data transmission interface to single-chip microcomputer 2 transmission, and operator can also pass through keyboard or press button directly send above-mentioned control instruction to single-chip microcomputer 2。Powermeter verification instrumeter 13 or computer 14 may be arranged as according to order from small to large successively switching frequency scope。LCD display 11 shows user-selected frequency range and power gear。Single-chip microcomputer 2 closes second switch circuit 82 according to control instruction, and air interference device 9 energising enters duty；Single-chip microcomputer 2 closes corresponding first on-off circuit 81 then according to control instruction, starts corresponding frequency cells 90 and produces the radio signal of corresponding power；The radio signal that radio interference device 9 produces launched by antenna 10。Operator can be determined with the metric results compareing electric energy meter by relatively tested electric energy meter and test the anti-near-field thermal radiation interference performance of electric energy meter。
In sum, the anti-radio near-field thermal radiation performance testing device of electric energy meter that the embodiment of the present invention provides can simulate the signal of different frequency by the radio-interference signals of keyboard or press button, powermeter verification instrumeter or computer control wireless device generation characteristic frequency, and then test electric energy meter near field resisting radiation interference ability, and by checking measuring accuracy of electric energy meter and reset case checking electric energy meter reliability。
Particular embodiments described above; the purpose of the present invention, technical scheme and beneficial effect have been further described; it is it should be understood that; the foregoing is only specific embodiments of the invention; the protection domain being not intended to limit the present invention; all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention。
Claims (14)
1. the anti-radio near-field thermal radiation performance testing device of electric energy meter, it is characterised in that include the input block, single-chip microcomputer, on-off circuit, air interference device and the antenna that are sequentially connected with；
Described on-off circuit includes one or more first on-off circuit；
Described air interference device includes one or more frequency cells；
The one or more first on-off circuit, the one or more frequency cells and default one or more frequency range one_to_one corresponding；
Described input block sends control instruction to described single-chip microcomputer；Wherein, described control instruction comprises the information of the frequency range that user selects；
Described single-chip microcomputer determines, by resolving described control instruction, the frequency range that described user selects, and controls the first on-off circuit Guan Bi corresponding to frequency range that described user selects；
Described first on-off circuit connects corresponding frequency cells, starts corresponding frequency cells during described first on-off circuit Guan Bi；
Described frequency cells is for producing the radio signal of corresponding frequency range；
Described antenna is for launching the radio signal that described frequency cells produces。
2. the anti-radio near-field thermal radiation performance testing device of electric energy meter according to claim 1, it is characterized in that, also include a power circuit, the input incoming transport electricity of described power circuit, outfan connects described single-chip microcomputer, for providing running voltage for described single-chip microcomputer。
3. the anti-radio near-field thermal radiation performance testing device of electric energy meter according to claim 2, it is characterised in that described power circuit includes the first power circuit and second source circuit；
The input incoming transport electricity of described second source circuit, outfan connects described first power circuit, for alternating current being converted to the unidirectional current of constant voltage；
The input of described first power circuit connects described second source circuit, and outfan connects described single-chip microcomputer, for the galvanic voltage that described second source circuit exports is converted to the rated operational voltage of described single-chip microcomputer for described single-chip microcomputer。
4. the anti-radio near-field thermal radiation performance testing device of electric energy meter according to claim 3, it is characterised in that described on-off circuit also includes a second switch circuit,
The input of described second switch circuit connects described second source circuit and described single-chip microcomputer respectively, and outfan connects described air interference device, for the unidirectional current that described second source circuit exports is supplied to described air interference device；
Described single-chip microcomputer is additionally operable to control described second switch circuit and disconnects and Guan Bi。
5. the anti-radio near-field thermal radiation performance testing device of electric energy meter according to claim 4, it is characterised in that also include an isolation circuit, described isolation circuit connects described power circuit, described on-off circuit and described single-chip microcomputer respectively, disturbs for isolation signals。
6. the anti-radio near-field thermal radiation performance testing device of electric energy meter according to claim 5, it is characterised in that described isolation circuit includes the first isolation circuit and the second isolation circuit,
Described first isolation circuit connects described single-chip microcomputer, described first on-off circuit respectively, disturbs for isolation signals；
Described second isolation circuit connects described single-chip microcomputer, described second source circuit, described second switch circuit respectively, disturbs for isolation signals。
7. the anti-radio near-field thermal radiation performance testing device of electric energy meter according to claim 1, it is characterised in that described default one or more frequency ranges include: 400MHz～470MHz, 470MHz～510MHz, 900MHz, 1800MHz and 2.4GMHz。
8. the anti-radio near-field thermal radiation performance testing device of electric energy meter according to claim 1, it is characterized in that, described frequency cells is provided with multiple different power gear, and described frequency cells watt level of produced radio signal when different power gear work is different；
Described control instruction also comprises the information of the power gear that user selects；
Described single-chip microcomputer determines, by resolving described control instruction, the power gear that described user selects, and controls described frequency cells and work in the power gear of described user selection。
9. the anti-radio near-field thermal radiation performance testing device of electric energy meter according to claim 1, it is characterised in that described antenna is one or more, and with the one or more frequency cells one_to_one corresponding, each antenna connects the frequency cells that it is corresponding。
10. according to the arbitrary described anti-radio near-field thermal radiation performance testing device of electric energy meter of claim 1～9, it is characterised in that it is one or more that described input block includes in the following:
Keyboard；
Press button；
Data transmission interface。
11. the anti-radio near-field thermal radiation performance testing device of electric energy meter according to claim 10, it is characterised in that also include host computer；
Described host computer connects described data transmission interface, for selecting frequency range for user, generates described control instruction according to the frequency range that user selects, and described control instruction is sent to described data transmission interface。
12. the anti-radio near-field thermal radiation performance testing device of electric energy meter according to claim 6, it is characterised in that also include the LCD display of a described single-chip microcomputer of connection。
13. the anti-radio near-field thermal radiation performance testing device of electric energy meter according to claim 6, it is characterised in that described first isolation circuit is photoelectric coupling circuit with described second isolation circuit。
14. the anti-radio near-field thermal radiation performance testing device of electric energy meter according to claim 4, it is characterised in that described first on-off circuit and described second switch circuit are relay switching circuit。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620271296.5U CN205450253U (en) | 2016-04-01 | 2016-04-01 | Anti radio near field of electric energy meter radiation capability test device |
| CN201610202711.6A CN105699934B (en) | 2016-04-01 | 2016-04-01 | A kind of anti-radio near-field thermal radiation performance testing device of electric energy meter |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620271296.5U CN205450253U (en) | 2016-04-01 | 2016-04-01 | Anti radio near field of electric energy meter radiation capability test device |
| CN201610202711.6A CN105699934B (en) | 2016-04-01 | 2016-04-01 | A kind of anti-radio near-field thermal radiation performance testing device of electric energy meter |
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| CN105699934A true CN105699934A (en) | 2016-06-22 |
| CN105699934B CN105699934B (en) | 2018-09-07 |
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| CN201620271296.5U Active CN205450253U (en) | 2016-04-01 | 2016-04-01 | Anti radio near field of electric energy meter radiation capability test device |
| CN201610202711.6A Active CN105699934B (en) | 2016-04-01 | 2016-04-01 | A kind of anti-radio near-field thermal radiation performance testing device of electric energy meter |
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| CN106443555A (en) * | 2016-08-30 | 2017-02-22 | 华立科技股份有限公司 | Verification stand with radio interference intensity detection function |
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| US20020118119A1 (en) * | 2001-02-28 | 2002-08-29 | Hammond Scott H. | Wireless isolation relay for remote metering |
| CN101776740A (en) * | 2010-01-19 | 2010-07-14 | 云南电网公司 | Electric energy metering automation simulation laboratory |
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| CN106443555A (en) * | 2016-08-30 | 2017-02-22 | 华立科技股份有限公司 | Verification stand with radio interference intensity detection function |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN205450253U (en) | 2016-08-10 |
| CN105699934B (en) | 2018-09-07 |
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