CN203745556U - Automatic testing device used for testing load capability of communication interface of intelligent electric energy meter - Google Patents
Automatic testing device used for testing load capability of communication interface of intelligent electric energy meter Download PDFInfo
- Publication number
- CN203745556U CN203745556U CN201320745631.7U CN201320745631U CN203745556U CN 203745556 U CN203745556 U CN 203745556U CN 201320745631 U CN201320745631 U CN 201320745631U CN 203745556 U CN203745556 U CN 203745556U
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- electric energy
- communication interface
- energy meter
- intelligent electric
- microprocessing unit
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- 238000004891 communication Methods 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model relates to an automatic testing device used for testing load capability of a communication interface of an intelligent electric energy meter. The testing device includes a device shell. A microprocessing unit is installed in the shell. A signal collecting terminal of the microprocessing unit is connected with a resistor R in parallel and is then connected with a power port and a grounding port of the communication interface of the intelligent electric energy meter. A signal output terminal of the microprocessing unit is connected with a red LED indicating lamp and a green LED indicating lamp respectively. The microrpocessing unit is fed with power by a power supply unit through a power switch K. The automatic testing device provided by the utility model can automatically detect that whether the load capacity of the communication interface of the intelligent electric energy mter meets technical requirements or not and can output testing results automatically. Efficiency of testing the load capacity of the communication interface of the electric energy meter is improved. The automatic testing device can indicate testing results via the LED lamps directly.
Description
Technical field
The utility model belongs to the technical field of measurement and test of intelligent electric energy meter communication module interface load capacity, especially a kind of intelligent electric energy meter communication interface load capacity automatic testing equipment.
Background technology
In State Grid Corporation of China's intelligent electric energy meter series standard, require " intelligent electric energy meter communication module interface load capacity (being applicable to the electric energy meter with communication module): V
cCvoltage+12V ± 1V, load current 0mA～400mA; Vcc Power supply belt carries in 400mA situation, and the ripple Vp-p of Vcc power supply should be less than 1 ‰ ", for the test of this interface load capacity; conventionally must be from connecting resistance, adopt multimeter test, or test with electronic load; in the time that electric energy meter is carried out to batch testing, testing efficiency is low, and workload is heavy.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and proposes a kind of intelligent electric energy meter communication interface load capacity automatic testing equipment.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of intelligent electric energy meter communication interface load capacity automatic testing equipment, comprise device case, inside at housing is fixedly mounted with microprocessing unit, after the signals collecting end parallel resistance R of microprocessing unit, be connected with power port and the ground port of intelligent electric energy meter communication interface, the signal output part of microprocessing unit connects respectively red LED pilot lamp and green LED pilot lamp, and microprocessing unit is powered by power supply unit by power switch K.
And the power port of described intelligent electric energy meter communication interface is Vcc, 1,2 pin, described ground port is Vss, 3,4 pin.
And described resistance R is the pull-up resistor of intelligent electric energy meter communication interface, resistance R value 30 Ω.
And described microprocessing unit adopts the micro-chip processor with A/D modular converter, model is RENESAS M16C/64A.
And, the signal output part of described microprocessing unit connects respectively red LED pilot lamp and green LED pilot lamp specifically: an I/O mouth of microprocessing unit is connected with green LED pilot lamp, and another I/O mouth output terminal of microprocessing unit is connected with red LED pilot lamp.
Advantage of the present utility model and good effect are
1, the communication interface load capacity that the utility model can the detect intelligent electric energy meter automatically requirement that whether meets the specification, outputs test result automatically, improves the testing efficiency of electric energy meter communication interface load capacity.
2, the utility model is by LED lamp instruction test result, result intuitive display.
Brief description of the drawings
Fig. 1 is electric energy meter communication interface load capacity testing device schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is implemented to be further described, following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of intelligent electric energy meter communication interface load capacity automatic testing equipment, as shown in Figure 1, comprise device case, be fixedly mounted with microprocessing unit (MCU) in the inside of housing, after the signals collecting end parallel resistance R of microprocessing unit, be connected with power port and the ground port of intelligent electric energy meter communication interface, the signal output part of microprocessing unit connects respectively red LED pilot lamp and green LED pilot lamp, and microprocessing unit is powered by power supply unit by power switch K.
In concrete enforcement of the present utility model, the power port of described intelligent electric energy meter communication interface is Vcc, 1,2 pin, and described ground port is Vss, 3,4 pin.
In concrete enforcement of the present utility model, described resistance R is the pull-up resistor of intelligent electric energy meter communication interface, for " V
cCvoltage+12V ± 1V, the load capacity of load current 0mA～400mA requires to calculate, and R gets 30 Ω.
In concrete enforcement of the present utility model, described microprocessing unit adopts the micro-chip processor RENESAS M16C/64A with A/D modular converter, after simulating signal on A/D modular converter collection pull-up resistor R, be converted to digital signal and in microprocessing unit, carry out again signal processing, an I/O mouth of microprocessing unit, output terminal is connected with green LED pilot lamp, and another I/O mouth output terminal of microprocessing unit is connected with red LED pilot lamp.
In concrete enforcement of the present utility model, described power switch K, red LED pilot lamp and green LED pilot lamp are all placed in and on the upper surface of described housing, are beneficial to operation and observe.
Principle of work
The utility model is got the input of R both end voltage as MCU A/D converter, and MCU calculates its magnitude of voltage, judges whether magnitude of voltage meets " V
cCvoltage+12V ± 1V, the ripple Vp-p of Vcc power supply should be less than 1 ‰ " requirement, if voltage meets this requirement, load capacity is qualified, outputs a control signal to LED circuit, lights green LED pilot lamp; If voltage exceeds this scope, be judged as defectively, light red LED pilot lamp.
Claims (5)
1. an intelligent electric energy meter communication interface load capacity automatic testing equipment, it is characterized in that: comprise device case, inside at housing is fixedly mounted with microprocessing unit, after the signals collecting end parallel resistance R of microprocessing unit, be connected with power port and the ground port of intelligent electric energy meter communication interface, the signal output part of microprocessing unit connects respectively red LED pilot lamp and green LED pilot lamp, and microprocessing unit is powered by power supply unit by power switch K.
2. intelligent electric energy meter communication interface load capacity automatic testing equipment according to claim 1, is characterized in that: the power port of described intelligent electric energy meter communication interface is Vcc, 1,2 pin, and described ground port is Vss, 3,4 pin.
3. intelligent electric energy meter communication interface load capacity automatic testing equipment according to claim 1, is characterized in that: described resistance R is the pull-up resistor of intelligent electric energy meter communication interface resistance R value 30 Ω.
4. intelligent electric energy meter communication interface load capacity automatic testing equipment according to claim 1, is characterized in that: described microprocessing unit adopts the micro-chip processor with A/D modular converter, and model is RENESAS M16C/64A.
5. intelligent electric energy meter communication interface load capacity automatic testing equipment according to claim 1, it is characterized in that: the signal output part of described microprocessing unit connects respectively red LED pilot lamp and green LED pilot lamp specifically: an I/O mouth of microprocessing unit is connected with green LED pilot lamp, and another I/O mouth output terminal of microprocessing unit is connected with red LED pilot lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745631.7U CN203745556U (en) | 2013-11-21 | 2013-11-21 | Automatic testing device used for testing load capability of communication interface of intelligent electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745631.7U CN203745556U (en) | 2013-11-21 | 2013-11-21 | Automatic testing device used for testing load capability of communication interface of intelligent electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203745556U true CN203745556U (en) | 2014-07-30 |
Family
ID=51345341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320745631.7U Expired - Lifetime CN203745556U (en) | 2013-11-21 | 2013-11-21 | Automatic testing device used for testing load capability of communication interface of intelligent electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203745556U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807251A (en) * | 2016-05-12 | 2016-07-27 | 烟台南山学院 | Automatic fault detection method for outdoor electric energy meter |
| CN107015494A (en) * | 2016-01-27 | 2017-08-04 | 上海和辉光电有限公司 | Plurality of voltages source circuit |
| CN107450043A (en) * | 2017-07-21 | 2017-12-08 | 国网江西省电力公司电力科学研究院 | Communication module of intelligent electric energy meter interface load capacity test device and method |
-
2013
- 2013-11-21 CN CN201320745631.7U patent/CN203745556U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015494A (en) * | 2016-01-27 | 2017-08-04 | 上海和辉光电有限公司 | Plurality of voltages source circuit |
| CN107015494B (en) * | 2016-01-27 | 2020-10-16 | 上海和辉光电有限公司 | Multi-path voltage source circuit |
| CN105807251A (en) * | 2016-05-12 | 2016-07-27 | 烟台南山学院 | Automatic fault detection method for outdoor electric energy meter |
| CN105807251B (en) * | 2016-05-12 | 2018-08-24 | 烟台南山学院 | A kind of outdoor electrical energy meter fault self-verifying method |
| CN107450043A (en) * | 2017-07-21 | 2017-12-08 | 国网江西省电力公司电力科学研究院 | Communication module of intelligent electric energy meter interface load capacity test device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |