CN202995019U - Multifunctional alternating current and direct current measuring instrument - Google Patents
Multifunctional alternating current and direct current measuring instrument Download PDFInfo
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- CN202995019U CN202995019U CN 201220688587 CN201220688587U CN202995019U CN 202995019 U CN202995019 U CN 202995019U CN 201220688587 CN201220688587 CN 201220688587 CN 201220688587 U CN201220688587 U CN 201220688587U CN 202995019 U CN202995019 U CN 202995019U
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Abstract
The utility model introduces a multifunctional alternating current and direct current measuring instrument. A main system module (5) is connected with a color LCD module (2), a precision alternating current voltage sampling and gear switching module (3), a precision alternating current current sampling and gear switching module (4), a power input and output module (6), a keyboard module (7) and a direct current system module (9). The direct current system module (9) is connected with a precision direct current voltage and current sampling and gear switching module (8). According to the measuring instrument, firstly intelligent electrical measurement standard calibration system software can be utilized to read data of a measured device and a multifunctional alternating current and direct current measuring instrument at the same time, an error is calculated, and the workload of verification is greatly reduced; secondly, the alternating current and direct current integrated measurement is realized, for a device whose alternating current and direct current need to be verified, the cumbersome procedures of a traditional verification mode is overcome, the labor intensity is reduced greatly, and the working efficiency is raised.
Description
Technical field
The utility model belongs to the electrical measurement metering field, relates in particular to a kind of Multi-function ac/dc electrical measurement instrument that can measure the electric current and voltage of alternating current, direct current, single-phase electricity and three-phase electricity.
Background technology
The electrical measurement instrument is widely used in measurement of power test center and national metrology and measurement mechanism at different levels and quality testing department as the standard device of various single, the three-phase electric energy meter determinators of verification and alternating current-direct current indicating instrument determinator and all kinds of digital instruments.At present, the electrical measurement instrument of external import, RD-33, the RD-31 type electrical measurement instrument produced of thunder and lightning company for example, the PRS200.3 type electrical measurement instrument that EMH company produces, class of accuracy can reach 0.01 grade, but only has the measurement of alternating voltage electric current, can not measure direct current, and alternating voltage amount limit is only to 600V, and measurement range is narrow, can not satisfy the needs of domestic various electric measuring instrument and rules.And external standard scale operation of producing is very loaded down with trivial details, and communication software interface also can not be realized full-automatic verification.
recent years is the CL3112 type three-phase multifunctional measuring instrument of section land company for example, the DK-45B2 type three-phase multifunctional measuring instrument of Nanjing Dan Dike company, its main control unit adopts built-in industrial control machine, the QWERTY keyboard input, have powerful, reliability is high, the characteristics such as software upgrading is easy to maintenance, properties of product are significantly promoted, and adopt advanced sampling computing technique to guarantee that function is excellent, and color screen liquid crystal display, full menu in Chinese, the interface is clear, easy to operate, good visual effect, voltage, electric current, power, the error of electric energy all provides Wide measuring range with relative error, all range adopts microprocessor to control automatic switchover, (English full name is the abbreviation of Analog-to-Digital Converter to keep input ADC, its Chinese translation is analog/digital converter.) voltage stability is high, easy and simple to handle, reliable results.Also having the English full name of RS(is the abbreviation of Remote Sensing, and its Chinese translation is remote sensing.) 232, RS485 and network interface, the abbreviation that can to use the English full name of PC(be personal computer, its Chinese translation is PC.) machine controls and data management.But above-mentioned instrument all can not realize simultaneously AC and DC measurement, and alternating voltage amount limit is also only to 750V, accuracy can only reach 0.05 grade, can not satisfy the high electrical measurement verification demand of class of accuracy.
The utility model content
The technical problems to be solved in the utility model is, defective for the prior art existence, a kind of Multi-function ac/dc electrical measurement instrument is provided, satisfying the automatic Verification demand of alternating current-direct current electrical measurement instrument and device, and simultaneously the electric current and voltage of alternating current, direct current, single-phase electricity and three-phase electricity is measured.And broken through on class of accuracy and electric current and voltage amount limit.
The technical solution of the utility model is, referring to accompanying drawing 1, the Multi-function ac/dc electrical measurement instrument that provides is comprised of with gear switch module 8, straight-flow system module 9 with gear switch module 4, main system module 5, electric energy input/output module 6, Keysheet module 7, the sampling of precision DC electric current and voltage with gear switch module 3, the sampling of accurate alternating current the linear power module 1 of transformer, liquid crystal screen module 2, the sampling of accurate alternating voltage as shown in Figure 1.The power output end of the linear power module 1 of wherein said transformer be connected in parallel power input, the power input of main system module 5, the power input of electric energy input/output module 6, the sampling of precision DC electric current and voltage and the power input of gear switch module 8, the power input of straight-flow system module 9 of the power input of liquid crystal screen module 2, the sampling of accurate alternating voltage and the power input of gear switch module 3, the sampling of accurate alternating current and gear switch module 4.The liquid crystal signal output part of described main system module 5 connects the signal input part of color liquid crystal panel module 2; The alternating voltage input end of analog signal of main system module 5 connects the alternating voltage analog signal output of accurate alternating voltage sampling and gear switch module 3; The control signal wire of main system module 5 connects the control signal interface of accurate alternating voltage sampling and gear switch module 3; The alternating current input end of analog signal of main system module 5 connects the alternating current analog signal output of accurate alternating current sampling and gear switch module 4; The control signal wire of main system module 5 connects the control signal interface of accurate alternating current sampling and gear switch module 4; The electric power signal line of main system module 5 connects the electric power signal interface of electric energy input/output module 6; The Keyboard Control signal wire of main system module 5 connects the keyboard signal interface of Keysheet module 7; The English full name of the SPI(of main system module 5 is the abbreviation of Serial Peripheral Interface, and its Chinese translation is serial peripheral interface.) connection connects the SPI communication interface of straight-flow system module 9.The dc voltage and current input end of analog signal of described straight-flow system module 9 connects the dc voltage and current analog signal output of the sampling of precision DC electric current and voltage and gear switch module 8; The control signal wire of described straight-flow system module 9 connects the control signal interface of the sampling of precision DC electric current and voltage and gear switch module 8.
Principle of work of the present utility model is, the many taps Industrial Frequency Transformer by civil power 220V by the linear power module of transformer is lower voltage, then produces the required power supply of modules through the AC/DC module of the linear power module 1 of transformer.The English full name of DSP(in the main system module is the abbreviation of Digital SignalProcessor, and its Chinese translation is digital signal processor.) be embedded in real time operating system, the scanning of supervisory keyboard module is controlled the color liquid crystal panel module and is shown, also controls alternating voltage data acquisition and gear switch simultaneously, control alternating current data acquisition and gear switch, and by calculating alternating voltage electric current True Data and showing.And the embedded real-time system of straight-flow system module is controlled dc voltage and current sampling and gear switch, and carries out data and process, and data are sent on dsp system by the SPI communication modes and show in real time the most at last.Come therefrom, Multi-function ac/dc electrical measurement instrument of the present utility model is broken through on class of accuracy and electric current and voltage amount limit, class of accuracy reaches 0.02 grade, the three-phase alternating voltage amount is limited to 10V to 1000V, the three-phase alternating current flow is limited to 100mA to 100A, the DC voltage amount is limited to 100mV to 1000V, and direct current flow is limited to 10 μ A to 50A.
The beneficial effects of the utility model are:
1, this measuring instrument can utilize intelligent electric mark pre-check system software that tested device and Multi-function ac/dc electrical measurement instrument data are read simultaneously, and the error of calculation, the workload of greatly having reduced verification.
2, realize alterating and direct current one bulk measurement, all needed the device of verification for alterating and direct current, overcome the complicated procedures of traditional verification mode, greatly alleviated labour intensity, improved work efficiency.
Description of drawings
Fig. 1 is the structured flowchart of a specific embodiment of the utility model Multi-function ac/dc electrical measurement instrument, is denoted as in figure:
The linear power module of 1-transformer,
The 2-liquid crystal screen module,
The accurate alternating voltage sampling of 3-and gear switch module,
The accurate alternating current sampling of 4-and gear switch module,
5-main system module,
6-electric energy input/output module,
The 7-Keysheet module,
The sampling of 8-precision DC electric current and voltage and gear switch module,
9-straight-flow system module.
Embodiment
Referring to Fig. 1, the linear Power supply functional module of HJ8 type transformer that the linear power module 1 of the transformer of this embodiment of the utility model Multi-function ac/dc electrical measurement instrument shown in Figure 1 adopts Chinese Suzhou Western Hills mutual inductor scientific and technological development company limited to produce.8.4 cun VGA Presentation Function modules that liquid crystal screen module 2 adopts NEC Corporation to produce.UPR-UPSC type alternating voltage sampling functions module, UPRNS-UPRND type alternating current sampling functions module that accurate alternating voltage sampling and gear switch module 3, the sampling of accurate alternating current and gear switch module 4 adopt respectively China Shenzhen Yi Jie Electronics Co., Ltd. to produce successively.The DSP ac control system functional module that main system module 5 adopts ADI company to produce.The HCPL-665KR type high speed optoelectronic isolation features module that electric energy input/output module 6 adopts AvagoTechnologies to produce.The film-type key-press module that Keysheet module 7 adopts Nanjing of China Ran Di electronics technology company limited to produce.The sampling of precision DC electric current and voltage adopts sky, Chinese Jining to plough the RNG-1 type direct current sampling functions module that Electric Applicance Co., Ltd produces with gear switch module 8.The ARM DC control system functional module that straight-flow system module 9 adopts NXP company to produce.
The linear power module 1 of described transformer, liquid crystal screen module 2, the sampling of accurate alternating voltage, connect with reference to structure shown in Figure 1 by technique scheme with gear switch module 8, straight-flow system module 9 with gear switch module 4, main system module 5, electric energy input/output module 6, Keysheet module 7, the sampling of precision DC electric current and voltage with gear switch module 3, the sampling of accurate alternating current.Wherein, the power output end of the linear power module 1 of transformer power input, the power input of main system module 5, the power input of electric energy input/output module 6, the sampling of precision DC electric current and voltage and the power input of gear switch module 8, the power input of straight-flow system module 9 of the power input of liquid crystal screen module 2, the sampling of accurate alternating voltage and the power input of gear switch module 3, the sampling of accurate alternating current and gear switch module 4 that be connected in parallel.The liquid crystal signal output part of described main system module 5 connects the signal input part of color liquid crystal panel module 2; The alternating voltage input end of analog signal of main system module 5 connects the alternating voltage analog signal output of accurate alternating voltage sampling and gear switch module 3; The control signal wire of main system module 5 connects the control signal interface of accurate alternating voltage sampling and gear switch module 3; The alternating current input end of analog signal of main system module 5 connects the alternating current analog signal output of accurate alternating current sampling and gear switch module 4; The control signal wire of main system module 5 connects the control signal interface of accurate alternating current sampling and gear switch module 4; The electric power signal line of main system module 5 connects the electric power signal interface of electric energy input/output module 6; The Keyboard Control signal wire of main system module 5 connects the keyboard signal interface of Keysheet module 7; The SPI connection of main system module 5 connects the SPI communication interface of straight-flow system module 9.The dc voltage and current input end of analog signal of described straight-flow system module 9 connects the dc voltage and current analog signal output of the sampling of precision DC electric current and voltage and gear switch module 8; The control signal wire of described straight-flow system module 9 connects the control signal interface of the sampling of precision DC electric current and voltage and gear switch module 8.
The Multi-function ac/dc electrical measurement instrument of the present embodiment that consists of thus is through manufacturing experimently convenient and practical, the quickness and high efficiency that is proved to be on probation, greatly improved checker's work efficiency, alleviated its workload, economized metering through Hunan China and detect research institute's check and identify and meet 0.02 classification standard.
Claims (1)
1. a Multi-function ac/dc electrical measurement instrument, is characterized in that, it is by the linear power module (1) of transformer, liquid crystal screen module (2), accurate alternating voltage sampling and gear switch module (3), accurate alternating current sampling and gear switch module (4), main system module (5), electric energy input/output module (6), Keysheet module (7), the sampling of precision DC electric current and voltage and gear switch module (8), straight-flow system module (9) forms, the be connected in parallel power input of liquid crystal screen module (2) of the power output end of the linear power module of wherein said transformer (1), the power input of accurate alternating voltage sampling and gear switch module (3), the power input of accurate alternating current sampling and gear switch module (4), the power input of main system module (5), the power input of electric energy input/output module (6), the power input of the sampling of precision DC electric current and voltage and gear switch module (8), the power input of straight-flow system module (9), the liquid crystal signal output part of described main system module (5) connects the signal input part of color liquid crystal panel module (2), the alternating voltage input end of analog signal of main system module (5) connects the alternating voltage analog signal output of accurate alternating voltage sampling and gear switch module (3), the control signal wire of main system module (5) connects the control signal interface of accurate alternating voltage sampling and gear switch module (3), the alternating current input end of analog signal of main system module (5) connects the alternating current analog signal output of accurate alternating current sampling and gear switch module (4), the control signal wire of main system module (5) connects the control signal interface of accurate alternating current sampling and gear switch module (4), the electric power signal line of main system module (5) connects the electric power signal interface of electric energy input/output module (6), the Keyboard Control signal wire of main system module (5) connects the keyboard signal interface of Keysheet module (7), the SPI connection of main system module (5) connects the SPI communication interface of straight-flow system module (9), and the dc voltage and current input end of analog signal of described straight-flow system module (9) connects the dc voltage and current analog signal output of the sampling of precision DC electric current and voltage and gear switch module (8), the control signal wire of described straight-flow system module (9) connects the control signal interface of the sampling of precision DC electric current and voltage and gear switch module (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688587 CN202995019U (en) | 2012-12-13 | 2012-12-13 | Multifunctional alternating current and direct current measuring instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688587 CN202995019U (en) | 2012-12-13 | 2012-12-13 | Multifunctional alternating current and direct current measuring instrument |
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| CN202995019U true CN202995019U (en) | 2013-06-12 |
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| CN 201220688587 Expired - Lifetime CN202995019U (en) | 2012-12-13 | 2012-12-13 | Multifunctional alternating current and direct current measuring instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998648A (en) * | 2012-12-13 | 2013-03-27 | 湖南省电力公司科学研究院 | Multifunctional electric meter for alternating and direct currents |
-
2012
- 2012-12-13 CN CN 201220688587 patent/CN202995019U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998648A (en) * | 2012-12-13 | 2013-03-27 | 湖南省电力公司科学研究院 | Multifunctional electric meter for alternating and direct currents |
| CN102998648B (en) * | 2012-12-13 | 2015-07-08 | 湖南省电力公司科学研究院 | Multifunctional electric meter for alternating and direct currents |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130612 Effective date of abandoning: 20150708 |
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| RGAV | Abandon patent right to avoid regrant |