CN106707006A - Precision AC voltage sampling device - Google Patents
Precision AC voltage sampling device Download PDFInfo
- Publication number
- CN106707006A CN106707006A CN201710051318.6A CN201710051318A CN106707006A CN 106707006 A CN106707006 A CN 106707006A CN 201710051318 A CN201710051318 A CN 201710051318A CN 106707006 A CN106707006 A CN 106707006A
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- CN
- China
- Prior art keywords
- voltage
- precision
- voltage sampling
- alternating voltage
- power supply
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/22—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of ac into dc
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
A precision AC voltage sampling device comprises an AC voltage sampling node, a precision AC voltage sampling module, a sample voltage display communication module, and an isolation auxiliary power supply; the AC voltage sampling node is connected in sequence with a current type voltage transformer, a current-voltage conversion unit, a precision full wave rectifier unit, a second order low pass filter and the sample voltage display communication module; the isolation auxiliary power supply is respectively connected with the precision AC voltage sampling module and the sample voltage display communication module. Compared with the prior art, the precision AC voltage sampling device uses the isolation auxiliary power supply module to measure power frequency AC voltage in the power grid or circuits in real time, and can display and report the data in real time; the precision AC voltage sampling device is small in size, high in precision, high in isolation, low in drift, low in power consumption, wide in temperature scope, wide in detection voltage scope, and wide in auxiliary power supply scope; the precision AC voltage sampling device can better suit power equipment, a power grid monitoring automation system and an industrial control monitoring system.
Description
Technical field
The present invention relates to accurate sampler technical field, more particularly to a kind of accurate alternating voltage sampling apparatus.
Background technology
At present, voltage sampling apparatus on the market have that volume is big, precision is low, poor anti jamming capability, high-temperature mostly
Drift, high power consumption, adaptive temperature narrow range, the technical problem of detection voltage narrow range, automatic for power-supply device, power network
There is a problem of in change system, industry control monitoring system many above-mentioned.
The content of the invention
Present invention aim at a kind of accurate alternating voltage sampling apparatus is provided, filled with solving voltage sample in the prior art
Put and exist that volume is big, precision is low mostly, the drift of poor anti jamming capability, high-temperature, high power consumption, adaptive temperature narrow range, detect
The technical bug of the narrow technical problem of voltage range.
The technical proposal of the invention is realized in this way：
A kind of accurate alternating voltage sampling apparatus, including alternating voltage sampling node, accurate alternating voltage sampling module, adopt
Sample voltage shows communication module and isolation accessory power supply, and the accurate alternating voltage sampling module includes current mode mutual induction of voltage
Device, current-voltage converting unit, accurate full wave rectifying unit and second-order low-pass filter, the alternating voltage sampling node
Be sequentially connected current mode voltage transformer, current-voltage converting unit, accurate full wave rectifying unit, second-order low-pass filter with
And sampled voltage shows communication module, the isolation accessory power supply connects accurate alternating voltage sampling module, sampled voltage respectively
Display communication module.
Preferably, the sampled voltage display communication module includes miniature central processing unit, RS-232 modules, digital-scroll technique
The peripheral circuit of device, ICSP DLLs and miniature central processing unit, the RS-232 modules, nixie display, ICSP are compiled
Journey interface connects miniature central processing unit respectively.
Preferably, the sampled voltage of the alternating voltage is 0~300V.
Compared with prior art, the present invention has following beneficial effect：
Accurate alternating voltage sampling apparatus of the invention, using isolation auxiliary power module, can be in power network and circuit
Power frequency ac voltage is measured, shown in real time in real time, real-time report；With small volume, high accuracy, high isolation, low drifting, low
Power consumption, temperature range are wide, detection voltage wide ranges, accessory power supply wide ranges the features such as；The present apparatus can preferably be applied to power supply
Equipment, power network monitoring automation system, industry control monitoring system etc..
Brief description of the drawings
Fig. 1 is the circuit block diagram of precision alternating voltage sampling apparatus of the invention；
Fig. 2 is the circuit theory diagrams of precision alternating voltage sampling apparatus of the invention.
In figure：Alternating voltage sampling node 1, accurate alternating voltage sampling module 2, current mode voltage transformer 21, electric current-
Voltage conversion unit 22, accurate full wave rectifying unit 23, second-order low-pass filter 24, sampled voltage display communication module 3 is miniature
Central processing unit 31, RS-232 modules 32, nixie display 33, ICSP DLLs 34 isolate accessory power supply 4.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the present invention is clearly and completely described.
As shown in figure 1, a kind of accurate alternating voltage sampling apparatus, including alternating voltage sampling node 1, accurate alternating voltage
Sampling module 2, sampled voltage shows communication module 3 and isolation accessory power supply 4, and the accurate alternating voltage sampling module 2 is wrapped
Include current mode voltage transformer 21, current-voltage converting unit 22, accurate full wave rectifying unit 23 and second-order low-pass filter
24, alternating voltage sampling node use can connect two-phase electricity two joints and be sequentially connected current mode voltage transformer 21,
Current-voltage converting unit 22, accurate full wave rectifying unit 23, second-order low-pass filter 24 and sampled voltage display communication mould
Block 3, the isolation accessory power supply 4 connects accurate alternating voltage sampling module 2, sampled voltage display communication module 3 and gives respectively
Its power supply.The sampled voltage display communication module 3 includes miniature central processing unit 31, RS-232 modules 32, nixie display
33rd, the peripheral circuit of ICSP DLLs 34 and miniature central processing unit 31, the RS-232 modules 32, nixie display
33rd, ICSP DLLs 34 connect miniature central processing unit 31 respectively.The sampled voltage of the alternating voltage is 0~300V.
This sampling apparatus includes following working index：
Input characteristics
Input voltage range：0~300V of AC；
Linear measurement range：0%~100%；
Frequency range：45Hz~440Hz；
Output characteristics
Output type：Numerical monitor, RS-232 data are reported；
Precision：0.2%；
Temperature drift：150×10-6/℃；
Other characteristics
Accessory power supply：DC9~36V；
Quiescent dissipation：1W；
Isolation characteristic：Input, output, power supply are isolated (three isolation)；
Isolation is pressure-resistant：
Input and output >=DC 2.5KV, 1min；
Input and power supply >=DC 2.5KV, 1min；
Power supply and output >=DC 1.5KV, 1min；
Operating ambient temperature：- 40 DEG C~+55 DEG C；
Storage condition temperature：- 50 DEG C~+70 DEG C.
To sum up knowable to structure of the invention, accurate alternating voltage sampling apparatus of the invention, using isolation accessory power supply mould
Block, the power frequency ac voltage in power network and circuit can in real time be measured, in real time display, real-time report；With small volume, height
The features such as precision, high isolation, low drifting, low-power consumption, temperature range wide, detection voltage wide ranges, accessory power supply wide ranges；This dress
Putting can preferably be applied to power-supply device, power network monitoring automation system, industry control monitoring system etc..
Claims (3)
1. a kind of accurate alternating voltage sampling apparatus, including alternating voltage sampling node, accurate alternating voltage sampling module, sampling
Voltage shows communication module and isolation accessory power supply, it is characterised in that the accurate alternating voltage sampling module includes electric current
Type voltage transformer, current-voltage converting unit, accurate full wave rectifying unit and second-order low-pass filter, the alternating current
It is low that pressure sampling node is sequentially connected current mode voltage transformer, current-voltage converting unit, accurate full wave rectifying unit, second order
Bandpass filter and sampled voltage display communication module, the isolation accessory power supply connect accurate alternating voltage sampling mould respectively
Block, sampled voltage display communication module.
2. precision alternating voltage sampling apparatus as claimed in claim 1, it is characterised in that the sampled voltage display communication mould
Block includes the outer of miniature central processing unit, RS-232 modules, nixie display, ICSP DLLs and miniature central processing unit
Circuit is enclosed, the RS-232 modules, nixie display, ICSP DLLs connect miniature central processing unit respectively.
3. precision alternating voltage sampling apparatus as claimed in claim 2, it is characterised in that the sampled voltage of the alternating voltage
It is 0~300V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710051318.6A CN106707006A (en) | 2017-01-23 | 2017-01-23 | Precision AC voltage sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710051318.6A CN106707006A (en) | 2017-01-23 | 2017-01-23 | Precision AC voltage sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106707006A true CN106707006A (en) | 2017-05-24 |
Family
ID=58908868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710051318.6A Pending CN106707006A (en) | 2017-01-23 | 2017-01-23 | Precision AC voltage sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106707006A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151903A (en) * | 2018-01-26 | 2018-06-12 | 扬州海通电子科技有限公司 | High Precision Low Temperature drift temp measuring system and its measuring method based on three-wire system PT100 |
| CN108233133A (en) * | 2017-12-31 | 2018-06-29 | 扬州海通电子科技有限公司 | Modular contact component and the large-scale power transmission sliding ring contact making device based on the component |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201017012Y (en) * | 2007-03-19 | 2008-02-06 | 深圳市艾柯森自动化设备有限公司 | Load power indicator |
| CN202372569U (en) * | 2011-12-27 | 2012-08-08 | 苏州银河龙芯科技有限公司 | Power parameter measuring device |
| CN205038257U (en) * | 2015-09-24 | 2016-02-17 | 深圳圣斯尔电子技术有限公司 | Electric alternating current that asks for keeps apart changer |
| CN105486914A (en) * | 2015-11-22 | 2016-04-13 | 国网辽宁省电力有限公司朝阳供电公司 | AC sampling device of electricity larceny preventive power load monitoring system |
| CN206638725U (en) * | 2017-01-23 | 2017-11-14 | 扬州海通电子科技有限公司 | A kind of accurate alternating voltage sampling apparatus |
-
2017
- 2017-01-23 CN CN201710051318.6A patent/CN106707006A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201017012Y (en) * | 2007-03-19 | 2008-02-06 | 深圳市艾柯森自动化设备有限公司 | Load power indicator |
| CN202372569U (en) * | 2011-12-27 | 2012-08-08 | 苏州银河龙芯科技有限公司 | Power parameter measuring device |
| CN205038257U (en) * | 2015-09-24 | 2016-02-17 | 深圳圣斯尔电子技术有限公司 | Electric alternating current that asks for keeps apart changer |
| CN105486914A (en) * | 2015-11-22 | 2016-04-13 | 国网辽宁省电力有限公司朝阳供电公司 | AC sampling device of electricity larceny preventive power load monitoring system |
| CN206638725U (en) * | 2017-01-23 | 2017-11-14 | 扬州海通电子科技有限公司 | A kind of accurate alternating voltage sampling apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233133A (en) * | 2017-12-31 | 2018-06-29 | 扬州海通电子科技有限公司 | Modular contact component and the large-scale power transmission sliding ring contact making device based on the component |
| CN108151903A (en) * | 2018-01-26 | 2018-06-12 | 扬州海通电子科技有限公司 | High Precision Low Temperature drift temp measuring system and its measuring method based on three-wire system PT100 |
| CN108151903B (en) * | 2018-01-26 | 2023-12-29 | 扬州海通电子科技有限公司 | High-precision low-temperature drift temperature measurement system based on three-wire PT100 and measurement method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xie Wenwu Inventor before: Huang Lu |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |