CN101666821B - Multifunctional and intelligent alternating current meter - Google Patents
Multifunctional and intelligent alternating current meter Download PDFInfo
- Publication number
- CN101666821B CN101666821B CN2009103077023A CN200910307702A CN101666821B CN 101666821 B CN101666821 B CN 101666821B CN 2009103077023 A CN2009103077023 A CN 2009103077023A CN 200910307702 A CN200910307702 A CN 200910307702A CN 101666821 B CN101666821 B CN 101666821B
- Authority
- CN
- China
- Prior art keywords
- current
- module
- voltage
- alternating current
- meter
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses a multifunctional and intelligent alternating current meter which comprises an input loop composed by an ACV-1 voltage module and an ACA-1 current module, an amplifier, a processing unit composed by an electric meter measuring chip U2, a display unit composed by a liquid crystal display and a 485 communication interface, wherein the ACV-1 voltage module consists of 10 sampling resistors and a magnetic coupling voltage sensor; and the ACA-1 current module adopts a magnetic coupling current sensor. The multifunctional and intelligent alternating current meter can simultaneously measure eight parameters of the alternating current instantaneous value, the alternating voltage instantaneous value, the alternating current effective value, the alternating voltage effective value, the active power, the reactive power, the power factor and the frequency, realizes one meter with multiple purposes and has stronger overload capacity and obvious energy-saving effect.
Description
Technical field
The present invention relates to a kind of instrument, particularly a kind of multifunctional and intelligent alternating current meter.
Background technology
Industry is at present gone up and is adopted alternating current ammeter, A.C. voltmeter, active power meter, reactive volt-ampere meter mostly; Power factor meter, six tables such as frequency meter are measured the alternating current instantaneous value, the alternating current effective value; The alternating voltage instantaneous value, alternating voltage effective value, active power, reactive power; Power factor, eight parameters commonly used such as frequency, and also the interior resistance of present alternating current ammeter is very big at the measured current time error usually more than 50 ohm; And power consumption is big, and more than 50 Ω, it is very big to measure the miniwatt time error, and power consumption is big usually for the same because current coil of ac power meter; Power factor meter can not be accomplished-1 ~ 0 ~+1 comprehensive measurement usually, measures low power factor table (below 0.2) especially and will use the low power factor table usually, and use is brought difficulty.And the consumption of industrial this product is very big.
Summary of the invention
The objective of the invention is provides a kind of realization a-table-multi-purpose for the deficiency that solves above-mentioned technology, has both saved starting material, energy-conservation again multifunctional and intelligent alternating current meter.
[0004]In order to achieve the above object; A kind of multifunctional and intelligent alternating current meter that the present invention designed; It comprises that the input circuit, amplifier, the ammeter measured chip U2 that are made up of ACV-1 voltage module and ACA-1 current module form processing unit, liquid crystal display is formed display unit and 485 communication interfaces; Described ACV-1 voltage module is made up of 10 sampling resistors and a magnetic coupled voltages sensor; Described ACA-1 current module adopts magnetic couple current sensor.Describedly being made up of 10 sampling resistors and a magnetic coupled voltages sensor, is the resistance that is connected in series 5 definite resistances at two input ends of magnetic coupled voltages sensor respectively.Described amplifier comprises amplifying circuit U7-1 and U7-2; The output of ACV-1 voltage module is connected with ammeter measured chip U2 through the U7-1 in the amplifier (2); The output of ACA-1 current module is connected with ammeter measured chip U2 through the U7-2 in the amplifier (2); Ammeter measured chip U2 output terminal is connected with single-chip microcomputer U3, and single-chip microcomputer U3 connects communication module U5, and connects display unit through 485 communication interfaces.
The resulting a kind of multifunctional and intelligent alternating current meter of the present invention can be measured the alternating current instantaneous value simultaneously, alternating voltage instantaneous value, alternating current effective value; The alternating voltage effective value, active power, reactive power; Power factor, eight parameters such as frequency, and be with 485 interfaces; Realize a-table-multi-purpose, provide cost savings greatly and starting material, and have very strong overload capacity and have obvious energy saving effect.
Because current module has adopted novel current sensor in the intelligent alternating current meter, its internal resistance is not more than 0.01 Ω.And the interior resistance of alternating current ammeter is not less than 50 Ω at present, and the same interior resistance of current coil is not less than 50 Ω in the ac power meter, will consume the 50W electric energy at least to calculate through the 1A electric current, and this project only consumes the 0.01W electric energy, and its energy-saving effect is significant.Very big with the table amount in the industry, its energy-conservation ten minutes is surprising.
Description of drawings
Fig. 1 is that multifunctional and intelligent alternating current meter of the present invention is formed structural representation;
Fig. 2 is the voltage sensor structural representation;
Fig. 3 is the current sensor structural representation.
Embodiment
Combine accompanying drawing that the present invention is done further description through embodiment below.
Embodiment 1
As shown in Figure 1; A kind of multifunctional and intelligent alternating current meter that present embodiment is described; A kind of multifunctional and intelligent alternating current meter; It comprises that the input circuit 1, amplifier 2, the ammeter measured chip U2 that are made up of ACV-1 voltage module and ACA-1 current module form processing unit 3, liquid crystal display is formed display unit 4 and 485 communication interfaces 5, and described ACV-1 voltage module is made up of 10 sampling resistor 1-1 and a magnetic coupled voltages sensor 1-2; Described ACA-1 current module adopts magnetic couple current sensor 1-3, and it has characteristics such as the little and strong overload capacity of interior resistance.Describedly being made up of 10 sampling resistor 1-1 and a magnetic coupled voltages sensor 1-2, is the resistance 1-1 that is connected in series 5 definite resistances at two input ends of magnetic coupled voltages sensor 1-2 respectively, and it has overload capacity very doughtily.Described amplifier 2 comprises amplifying circuit U7-1 and U7-2; The output of ACV-1 voltage module and ACA-1 current module is connected with ammeter measured chip U2 with U7-2 through the U7-1 in the amplifier 2 respectively; Ammeter measured chip U2 output terminal is connected with single-chip microcomputer U3; Single-chip microcomputer U3 connects communication module U5, and connects display unit 4 through 485 communication interfaces 5.
As shown in Figure 2; Described ACV-1 voltage module adopts voltage sensor 1-2, and voltage is through 10 sampling resistor 1M0.5W inputs, and the centre is voltage sensor 1-2; When input 500V alternating voltage; Each resistance (1M0.5W) bears voltage 50V, and power is 0.00025W, and voltage sensor 1-2 original edge voltage is 0.2V only.Work as overload, during like input 5000V, each resistance holds voltage 500V, and power is 0.25W, so resistance still can not damage, anti-overload ability is extremely strong.
As shown in Figure 3, described ACA-1 current module adopts magnetic couple current sensor 1-3, and former limit is 1 circle only, pay limit N circle, so input resistance is merely 0.01 Ω
Voltage measurement is input to the ACV-1 voltage module, and ACV-1 output is amplified into ammeter measured chip U2 through the 07-1 amplifier.Current measurement is input to the ACA-1 current module, and ACA-1 output is amplified into ammeter measured chip U2 through the U7-2 amplifier.Ammeter measured chip U2 handles input voltage signal Vin and input current signal Iin after SP1 outputs to single-chip microcomputer U3 handles, and output USART is to through module U5, and connects display units 4 through 485 communication interfaces 5.Ammeter measured chip U2 output SP1 outputs to liquid crystal U4 simultaneously and shows, scanning 4000/s, and 4 data of the last demonstration of screen, refresh once 2 seconds.
Claims (1)
1. multifunctional and intelligent alternating current meter; It comprises that the input circuit (1), amplifier (2), the ammeter measured chip U2 that are made up of ACV-1 voltage module and ACA-1 current module form processing unit (3), liquid crystal display is formed display unit (4) and 485 communication interfaces (5); It is characterized in that described ACV-1 voltage module, form by 10 sampling resistors (1-1) and a magnetic coupled voltages sensor (1-2); Described ACA-1 current module adopts magnetic couple current sensor (1-3); Describedly being made up of 10 sampling resistors (1-1) and a magnetic coupled voltages sensor (1-2), is the resistance (1-1) that is connected in series 5 definite resistances at two input ends of magnetic coupled voltages sensor (1-2) respectively; Amplifier (2) comprises amplifying circuit U7-1 and U7-2; The output of ACV-1 voltage module is connected with ammeter measured chip U2 through the U7-1 in the amplifier (2); The output of ACA-1 current module is connected with ammeter measured chip U2 through the U7-2 in the amplifier (2); Ammeter measured chip U2 output terminal is connected with single-chip microcomputer U3, and single-chip microcomputer U3 connects communication module U5, and connects display unit (4) through 485 communication interfaces (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103077023A CN101666821B (en) | 2009-09-25 | 2009-09-25 | Multifunctional and intelligent alternating current meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103077023A CN101666821B (en) | 2009-09-25 | 2009-09-25 | Multifunctional and intelligent alternating current meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101666821A CN101666821A (en) | 2010-03-10 |
| CN101666821B true CN101666821B (en) | 2012-08-01 |
Family
ID=41803525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103077023A Expired - Fee Related CN101666821B (en) | 2009-09-25 | 2009-09-25 | Multifunctional and intelligent alternating current meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101666821B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621380B (en) * | 2012-03-14 | 2015-03-04 | 武汉长光科技有限公司 | Centralized intelligent electric meter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4839600A (en) * | 1986-01-10 | 1989-06-13 | Kuurstra John C | Ammeter for use with A.C. electric power lines |
| CN1392417A (en) * | 2001-06-20 | 2003-01-22 | 陈丽黄 | Novel digital/analog double display AC electric meter |
| CN2752784Y (en) * | 2004-12-15 | 2006-01-18 | 南京航程科技有限公司 | Electric magnet coil magnetic force comprehensive parameter testing instrument |
| CN101408563A (en) * | 2008-10-31 | 2009-04-15 | 苏州市瀛华智能电器有限公司 | Novel three-phase voltammeter |
-
2009
- 2009-09-25 CN CN2009103077023A patent/CN101666821B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4839600A (en) * | 1986-01-10 | 1989-06-13 | Kuurstra John C | Ammeter for use with A.C. electric power lines |
| CN1392417A (en) * | 2001-06-20 | 2003-01-22 | 陈丽黄 | Novel digital/analog double display AC electric meter |
| CN2752784Y (en) * | 2004-12-15 | 2006-01-18 | 南京航程科技有限公司 | Electric magnet coil magnetic force comprehensive parameter testing instrument |
| CN101408563A (en) * | 2008-10-31 | 2009-04-15 | 苏州市瀛华智能电器有限公司 | Novel three-phase voltammeter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101666821A (en) | 2010-03-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103149546B (en) | The field integrated tester of a kind of portable electric energy measuring terminal | |
| CN204832352U (en) | Little measurement of capacitance appearance of phase -delay total mark | |
| CN102818934A (en) | Direct-current resistance measuring circuit for inductor | |
| CN105486392A (en) | Small electronic weighing system based on single-chip microcomputer | |
| CN202066910U (en) | Device for measuring resistance, inductance and capacitance | |
| CN204575774U (en) | There is the programmable electronic load of direct current resistance measuring ability | |
| CN201311485Y (en) | Ripple factor detecting device adapted to DC power supply | |
| CN101666821B (en) | Multifunctional and intelligent alternating current meter | |
| CN203811291U (en) | High precision temperature measuring apparatus consuming low energy | |
| CN106092227A (en) | Liquid volume flow monitoring system based on three-stage amplifier and power supervisor | |
| CN204422130U (en) | A kind of gas pressure detection meter | |
| CN204439706U (en) | A kind of wide-range electric power meter | |
| CN203163846U (en) | High-precision automatic weighing device | |
| CN203290903U (en) | Skin analysis meter | |
| CN202330511U (en) | Three-phase harmonic electricity meter | |
| CN204789728U (en) | FPC alternating voltage detection circuitry and variable frequency air conditioner | |
| CN202256238U (en) | Portable edible oil quality test device | |
| CN104502717A (en) | Intelligent battery inner resistance measuring meter | |
| CN205229297U (en) | Use electric energy meter of card agate sampling resistor | |
| CN203719815U (en) | High-precision pressure measuring device | |
| CN203519720U (en) | Energy-saving type infrared induction intelligent distribution instrument | |
| CN202956412U (en) | Signal display device of continuous-range single-pointer meter | |
| CN204535739U (en) | A kind of data collector | |
| CN202033414U (en) | Medical leakage current testing instrument | |
| CN104280698A (en) | Magnetic field measurement device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Gaozi Complete Plant Co., Ltd. Assignor: Yu Yao Contract record no.: 2012330000004 Denomination of invention: Multifunctional and intelligent alternating current meter License type: Exclusive License Open date: 20100310 Record date: 20120109 |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Zhejiang Gaozi Complete Plant Co., Ltd. Assignor: Yu Yao Contract record no.: 2012330000004 Date of cancellation: 20150610 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20140925 |
|
| EXPY | Termination of patent right or utility model |