CN201479118U - Digital-to-analog signal converter and electric energy quality signal generator using the same - Google Patents
Digital-to-analog signal converter and electric energy quality signal generator using the same Download PDFInfo
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- CN201479118U CN201479118U CN2009202228214U CN200920222821U CN201479118U CN 201479118 U CN201479118 U CN 201479118U CN 2009202228214 U CN2009202228214 U CN 2009202228214U CN 200920222821 U CN200920222821 U CN 200920222821U CN 201479118 U CN201479118 U CN 201479118U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model discloses a digital-to-analog signal converter and an electric energy quality signal generator using the same. The digital-to-analog signal converter comprises a plurality of parallel digital-to-analog conversion chips, a multiway analog switch and a logic control module, wherein the multiway analog switch is respectively connected with the parallel digital-to-analog conversion chips, and the logic control module is respectively connected with the parallel digital-to-analog conversion chips and the multiway analog switch. The technical scheme of the utility model realizes the parallel digital-to-analog signal conversion module with high precision, high speed and low cost, meets the requirements of high precision, high speed and low cost of the high-performance electric energy quality signal generator on a signal generation module, and has high universality and suitability, overcomes the bottleneck defect of system performance caused by intrinsic contradictions between the output precision and the output speed of single digital-to-analog conversion chip to a larger degree, can realize the complicated electric energy quality signals, and improves the generation quality of the electric energy quality signals.
Description
Technical field
The utility model relates to quality of power supply control field, is specifically related to a kind of parallel digital and analogue signals conversion equipment and uses the quality of power supply signal generator of this device.
Background technology
Along with various powerful devices electrification electronic device widely, this makes traditional electrical network be in operation and produces a large amount of harmonic waves and complicated electric energy phenomenon.This has tangible harm to industrial computer etc. to the strict control appliance of power requirement, causes the economic loss that can't retrieve, has also caused the electric energy loss of electrical network power transmission and distribution simultaneously, even the safe operation of harm electrical network.Therefore, improve the quality of power supply, satisfy the demand of production development, become common hope for the electricity consumption both sides.Electric energy quality test generally includes three aspects: the working condition of detecting electric equipment when being subjected to electrical energy power quality disturbance, quality of power supply control device is to the inhibition ability of electrical energy power quality disturbance, the quality of power supply situation of testing electric power system in the check electrical network.
Quality of power supply signal generator is divided into three kinds from structure:
First kind, based on digital signal generation module and digital and analogue signals modular converter, produce the signal of random waveform, amplify through power amplifier then, output to Devices to test and get on.
Second kind, based on electronic switch voltage regulating transformer type, by variable autotransformer be used for the system controlled by computer switch of switching transformer and form, the no-load voltage ratio of change transformer can change the amplitude of voltage sag.
The third is realized in conjunction with suitable control module with power electronic device.
Above-mentioned first type of quality of power supply signal generator is modal.Its advantage is that implementation structure is simple, but there is performance bottleneck in the quality of power supply signal that takes place.High speed, high accuracy analog-digital chip cost an arm and a leg the circuit board wiring difficulty on the one hand in the digital and analogue signals modular converter; There are the intrinsic contradictions of high accuracy and high-speed output in analog-digital chip on the other hand.So existing digital and analogue signals modular converter is difficult to have both low cost, high accuracy and performance index such as high-speed.
The utility model content
The purpose of this utility model is at the deficiencies in the prior art, provide a kind of low cost, at a high speed, high-precision parallel digital and analogue signals conversion equipment and use quality of power supply signal generator this device, that can produce complicated quality of power supply signal.
For achieving the above object, the utility model provides a kind of digital and analogue signals conversion equipment, comprise: the multi-disc analog-digital chip that walks abreast, the multiway analog switch that is connected with the parallel analog-digital chip of described multi-disc respectively, and respectively with the described multi-disc Logic control module that analog-digital chip is connected with multiway analog switch that walks abreast.
Wherein, the digital and analogue signals conversion equipment can also comprise the filtering output module.
Wherein, the filtering output module can be low-pass filtering module.
Wherein, the number of parallel analog-digital chip equals the output number of times of described Logic control module digital command in the single logical Control Circulation.
The utility model also provides a kind of quality of power supply signal generator, comprising: above-mentioned digital and analogue signals conversion equipment, the power amplifier module that is connected with the filtering output module.
Wherein, quality of power supply signal generator can also comprise the main control module that is connected with Logic control module, and the networking module that is connected with main control module, as the constructing communication network module, wherein, the constructing communication network module can comprise a plurality of network nodes and GPS (Global PositioningSystem, global positioning system) markers module.
Wherein, quality of power supply signal generator can also comprise the display interface module that is connected with main control module.
Wherein, quality of power supply signal generator can also comprise respectively and the parallel analog-digital chip of multi-disc, Logic control module, the self calibration module that filtering output module and main control module connect.
Wherein, the number of parallel analog-digital chip equals the output number of times of described Logic control module digital command in the single logical Control Circulation.
The technical solution of the utility model is by the parallel export structure design of analog-digital chip and optimize logic control and realized high accuracy, at a high speed and parallel cheaply digital and analogue signals modular converter, and satisfied high-performance quality of power supply generator for high accuracy, the demand of signal generating module at a high speed and cheaply, had stronger versatility and adaptability.Overcome largely because the caused systematic function bottleneck of the intrinsic contradictions of single analog-digital chip between output accuracy and output speed, can realize more complicated quality of power supply signal output, improved the generation quality of quality of power supply signal, to realizing high-performance quality of power supply signal generator, have great importance and practical value.
Description of drawings
Fig. 1 is the structural representation of the digital and analogue signals conversion equipment of the utility model embodiment;
Fig. 2 is the structural representation of the quality of power supply signal generator of the utility model embodiment;
Fig. 3 is the flow chart that the Logic control module of the utility model embodiment carries out logic control.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
Fig. 1 is the structural representation of the digital and analogue signals conversion equipment of the utility model embodiment.As shown in Figure 1, digital and analogue signals conversion equipment according to the embodiment of the invention comprises: the multi-disc analog-digital chip that walks abreast, for example 4 (analog-digital chip 1～analog-digital chip 4), the multiway analog switch 6 that is connected with the parallel analog-digital chip 4 of described multi-disc respectively, and respectively with the described multi-disc Logic control module 5 that analog-digital chip 4 is connected with multiway analog switch 6 that walks abreast.Need to prove: the number of parallel analog-digital chip equals the output number of times of Logic control module 5 digital command in the single logical Control Circulation, in the present embodiment, the output number of times of digital command is 4 times in the single logical Control Circulation, has therefore adopted 4 parallel analog-digital chips.
Wherein, parallel digital and analogue signals conversion equipment can also comprise the filtering output module, and for example low-pass filtering module 7.
The utility model also provides a kind of quality of power supply signal generator.Fig. 2 is the structural representation of the quality of power supply signal generator of the utility model embodiment.As shown in Figure 2, this generator comprises: above-mentioned parallel digital and analogue signals conversion equipment, the power amplifier module 8 that is connected with low-pass filtering module 7.
Wherein, quality of power supply signal generator can also comprise the main control module that is connected with Logic control module 5, as CPU 10, and the networking module that is connected with CPU 10, as constructing communication network module 9, constructing communication network module 9 can comprise a plurality of network nodes and GPS markers module 13.
Wherein, quality of power supply signal generator can also comprise the display interface module 11 that is connected with CPU 10.
Wherein, quality of power supply signal generator can also comprise respectively and the parallel analog-digital chip of multi-disc, Logic control module 5, the self calibration module 12 that filtering output module 7 and CPU 10 connect.
Wherein, GPS markers module 13 can be connected with constructing communication network module 9.
For single analog-digital chip, its figure place is many more, and conversion accuracy is just high more, but conversion speed is just low more.And parallel digital and analogue signals conversion equipment of the present invention has been broken through the limitation of single analog-digital chip performance, adopts multi-disc analog-digital chip and line output, can guarantee the precision and the stability of digital-to-analogue conversion, can improve the frequency of digital-to-analogue conversion again.
And the logic control of the quality of power supply signal generator of the embodiment of the invention realizes by Logic control module on hardware, on software, realize by CPU, utilize parallel n sheet analog-digital chip exports analog signal in a logic control circulation logic control flow process as shown in Figure 3: to suppose to have n sheet analog-digital chip, under the control of Logic control module, CPU sends numeric control command to analog-digital chip i, gating analog-digital chip i+1 corresponding simulating switch makes analog-digital chip i+1 export corresponding analog control signal then; Wherein, i=1,2 ..., n-1.So circulation.
For instance, if 4 analog-digital chips are arranged, under the control of Logic control module, CPU sends digital signal 1 to analog-digital chip 1, and gating analog-digital chip 2 corresponding simulating switches make analog-digital chip 2 output analog signals then; CPU sends digital signal 2 to analog-digital chip 2, and gating analog-digital chip 3 corresponding simulating switches make analog-digital chip 3 output analog signals then; CPU sends digital signal 3 to analog-digital chip 3, and gating analog-digital chip 4 corresponding simulating switches make analog-digital chip 4 output analog signals then; CPU sends digital signal 4 to analog-digital chip 4, and gating analog-digital chip 1 corresponding simulating switch makes analog-digital chip 1 output and digital signal 1 corresponding simulating signal then; CPU sends digital signal 5 to analog-digital chip 1, and gating analog-digital chip 2 corresponding simulating switches make analog-digital chip 2 outputs and digital signal 2 corresponding simulating signals then; CPU sends digital signal 6 to analog-digital chip 2, and gating analog-digital chip 3 corresponding simulating switches make analog-digital chip 3 outputs and digital signal 3 corresponding simulating signals then; CPU sends digital signal 7 to analog-digital chip 3, and gating analog-digital chip 4 corresponding simulating switches make analog-digital chip 4 outputs and digital signal 4 corresponding simulating signals then.So circulation.
In current logic control circulation, given separately digital signal in the corresponding just last logic control circulation of analog signal that four parallel analog-digital chips are exported in proper order.Also, make the parallel digital and analogue signals conversion equipment of the embodiment of the invention be particularly useful in the quality of power supply signal generator just because of these characteristics.
Structural design and the optimization of logic control of embodiment of the present utility model by analog-digital chip and line output has realized high accuracy, at a high speed and parallel cheaply digital and analogue signals modular converter, and satisfied high-performance quality of power supply generator for high accuracy, at a high speed and the demand of signal generation cheaply, have stronger versatility and adaptability.Overcome largely because the caused systematic function bottleneck of the intrinsic contradictions of single analog-digital chip between output accuracy and output speed, can realize the output of more complicated quality of power supply signal, improved the generation quality of quality of power supply signal, to realizing high-performance quality of power supply signal generator, have great importance and practical value.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and modification, these improve and modification also belongs to protection range of the present utility model.
Claims (10)
1. digital and analogue signals conversion equipment, comprise: the multi-disc analog-digital chip that walks abreast, the multiway analog switch that is connected with the parallel analog-digital chip of described multi-disc respectively, and respectively with the described multi-disc Logic control module that analog-digital chip is connected with multiway analog switch that walks abreast.
2. digital and analogue signals conversion equipment as claimed in claim 1 is characterized in that, described parallel digital and analogue signals conversion equipment also comprises the filtering output module.
3. digital and analogue signals conversion equipment as claimed in claim 2 is characterized in that, described filtering output module is a low-pass filtering module.
4. digital and analogue signals conversion equipment as claimed in claim 1 is characterized in that, the number of described parallel analog-digital chip equals the output number of times of described Logic control module digital command in the single logical Control Circulation.
5. a quality of power supply signal generator comprises: as claim 2 or 3 described digital and analogue signals conversion equipments, the power amplifier module that is connected with described filtering output module.
6. quality of power supply signal generator as claimed in claim 5 is characterized in that, described quality of power supply signal generator also comprises the main control module that is connected with described Logic control module, and the networking module that is connected with described main control module.
7. quality of power supply signal generator as claimed in claim 5 is characterized in that, described quality of power supply signal generator also comprises the display interface module that is connected with described main control module.
8. quality of power supply signal generator as claimed in claim 6, it is characterized in that, described quality of power supply signal generator also comprises respectively and the parallel analog-digital chip of described multi-disc, Logic control module, the self calibration module that filtering output module and main control module connect.
9. quality of power supply signal generator as claimed in claim 5 is characterized in that, described networking module is the constructing communication network module, and it comprises GPS markers module and a plurality of network node.
10. as the arbitrary described quality of power supply signal generator of claim 6 to 9, it is characterized in that the number of described parallel analog-digital chip equals the output number of times of described Logic control module digital command in the single logical Control Circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202228214U CN201479118U (en) | 2009-09-11 | 2009-09-11 | Digital-to-analog signal converter and electric energy quality signal generator using the same |
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| CN2009202228214U CN201479118U (en) | 2009-09-11 | 2009-09-11 | Digital-to-analog signal converter and electric energy quality signal generator using the same |
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| CN201479118U true CN201479118U (en) | 2010-05-19 |
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| CN2009202228214U Expired - Lifetime CN201479118U (en) | 2009-09-11 | 2009-09-11 | Digital-to-analog signal converter and electric energy quality signal generator using the same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109639276A (en) * | 2018-11-23 | 2019-04-16 | 华中科技大学 | DT Doubling Time intertexture current steer type DAC with DDRZ calibration function |
| CN113741240A (en) * | 2021-08-02 | 2021-12-03 | 大唐南京发电厂 | Analog output channel expansion circuit |
-
2009
- 2009-09-11 CN CN2009202228214U patent/CN201479118U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109639276A (en) * | 2018-11-23 | 2019-04-16 | 华中科技大学 | DT Doubling Time intertexture current steer type DAC with DDRZ calibration function |
| CN113741240A (en) * | 2021-08-02 | 2021-12-03 | 大唐南京发电厂 | Analog output channel expansion circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING PONOVO XINLI ELECTRIC CO., LTD. Free format text: FORMER NAME: BEIJING PONOVO XINLI POWER SYSTEM INSTRUMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100098 Beijing City No. 48 Zhichun Road Yingdu building C block 4 unit two floor Patentee after: Beijing Ponovo Power Co., Ltd. Address before: 100098 Beijing City No. 48 Zhichun Road Yingdu building C block 4 unit two floor Patentee before: Beijing Ponovo Power System Instrument Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |