CN103743941A - Wireless communication clamp alternating current ammeter without power supply - Google Patents
Wireless communication clamp alternating current ammeter without power supply Download PDFInfo
- Publication number
- CN103743941A CN103743941A CN201410050255.9A CN201410050255A CN103743941A CN 103743941 A CN103743941 A CN 103743941A CN 201410050255 A CN201410050255 A CN 201410050255A CN 103743941 A CN103743941 A CN 103743941A
- Authority
- CN
- China
- Prior art keywords
- power supply
- circuit
- signal
- coil
- wireless communication
- 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.)
- Granted
Links
Images
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a wireless communication clamp alternating current ammeter without a power supply, and relates to clamp alternating current ammeters. The ammeter solves the problem that when a socket is installed to the existing clamp ammeter, short-time outage is required, so that potential safety hazard exists. A measuring coil and a power supply coil are wound on an iron core; the measuring coil, the power supply coil and the iron core are arranged in sheaths; the current signal output terminal of the power supply coil is connected with the current signal input terminal of a rectifying and voltage-stabilizing circuit; the rectifying and voltage-stabilizing signal output terminal of the rectifying and voltage-stabilizing circuit is simultaneously connected with the power supply input terminal of a wireless communication circuit, a power signal input terminal of a single-chip microcomputer circuit and a power signal input terminal of a signal shaping circuit; clamp current signals collected by a clamp current sensor are input into the signal shaping circuit through the measuring coil; the signal output terminal of the signal shaping circuit is connected with the shaping signal input terminal of the single-chip microcomputer circuit; the wireless signal output terminal of the single-chip microcomputer circuit is connected with the signal input terminal of the wireless communication circuit. The ammeter is used for measuring clamping alternating current.
Description
Technical field
The present invention relates to a kind of AC clip-on ammeter.
Background technology
The power supply mode of existing clamp on amperemeter is powered battery or Switching Power Supply power supply.Battery powered clamp on amperemeter is not suitable for the long-time current value of measuring in real time; With the clamp on amperemeter of Switching Power Supply power supply, can measure in real time for a long time current value, still, not having the measurement occasion of single-phase alternating current supply socket for example outdoor, just need to supply socket be installed in measure field.Do like this and not only when mounting receptacle, need short time power-off, and have certain potential safety hazard.
Summary of the invention
The present invention needs short time power-off in order to solve existing clamp on amperemeter when the mounting receptacle, has the problem of potential safety hazard, has proposed a kind of non-transformer wireless telecommunications AC clip-on ammeter.
Non-transformer wireless telecommunications AC clip-on ammeter of the present invention, it comprises reometer shell, regulator rectifier circuit, pincerlike current sensor, power supply coil, wireless communication line, single chip circuit and signal transformation circuit;
Described pincerlike current sensor comprises measuring coil, iron core and sheath;
Regulator rectifier circuit, wireless communication line, single chip circuit and signal transformation circuit are all placed in reometer shell,
Described measuring coil and power supply coil are all wrapped on iron core, and measuring coil, power supply coil and iron core are all placed in sheath;
The current signal output end of power supply coil connects the current signal input end of regulator rectifier circuit, and after the rectifying and voltage-stabilizing of regulator rectifier circuit, signal output part connects power supply signal input end, the power supply signal input end of single chip circuit and the power supply signal input end of signal transformation circuit of wireless communication line simultaneously;
The pincerlike current signal of pincerlike current sensor collection inputs to signal transformation circuit by measuring coil, the signal output part of signal transformation circuit connects the reshaping signal input end of single chip circuit, and the wireless signal output terminal of single chip circuit connects the signal input part of wireless communication line.
The present invention is based on electromagnetic induction principle, directly from measured wire, obtain micro-electric energy, make its can be in the situation that not relying on the power supply of battery or Switching Power Supply the alternating current flow valuve on long-time measure traverse line in real time, reach and facilitate scene to install and use, reduce the cost, improve the object of safety and reliability, and safety and reliability has all improved more than 10% compared with existing AC clip-on ammeter.
Accompanying drawing explanation
Fig. 1 is the structural representation of non-transformer wireless telecommunications AC clip-on ammeter of the present invention.
Embodiment
Embodiment one, in conjunction with Fig. 1, present embodiment is described, non-transformer wireless telecommunications AC clip-on ammeter described in present embodiment, it comprises reometer shell 1, regulator rectifier circuit 2, pincerlike current sensor 3, power supply coil 5, wireless communication line 6, single chip circuit 7 and signal transformation circuit 8;
Described pincerlike current sensor 3 comprises measuring coil 4-1, iron core 4-2 and sheath 4-3;
It is upper that described measuring coil 4-1 and power supply coil 5 are all wrapped in iron core 4-2, and measuring coil 4-1, power supply coil 5 and iron core 4-2 are all placed in sheath 4-3;
The current signal output end of power supply coil 5 connects the current signal input end of regulator rectifier circuit 2, and after the rectifying and voltage-stabilizing of regulator rectifier circuit 2, signal output part connects power supply signal input end, the power supply signal input end of single chip circuit 7 and the power supply signal input end of signal transformation circuit 8 of wireless communication line 6 simultaneously;
The pincerlike current signal that pincerlike current sensor 3 gathers inputs to signal transformation circuit 8 by measuring coil 4-1, the signal output part of signal transformation circuit 8 connects the reshaping signal input end of single chip circuit 7, and the wireless signal output terminal of single chip circuit 7 connects the signal input part of wireless communication line 6.
Non-transformer wireless telecommunications AC clip-on ammeter of the present invention can directly be installed in the measurement occasion that there is no single-phase alternating current supply socket, does not need to change test line for obtaining single phase alternating current power supply, there is no power process, does not bring potential safety hazard.Utilize wireless telecommunications real-time Transmission measurement data, engineering technical personnel can obtain measurement data in the situation that not contacting any tested wire, improve the safety that guarantees personnel and circuit and equipment when measuring efficiency.Utilize one independently inductive coil from tested wire, obtain micro-electric energy, through rectifying and voltage-stabilizing system, to signal transformation circuit and single-chip microcomputer and wireless communication line power supply, realize non-transformer work.
Embodiment two, present embodiment are that the number of turn of measuring coil 4 is 1000 circles to the further illustrating of the non-transformer wireless telecommunications AC clip-on ammeter described in embodiment one.
Embodiment three, present embodiment are to the further illustrating of the non-transformer wireless telecommunications AC clip-on ammeter described in embodiment one or embodiment two, and the number of turn of power supply coil 5 is 200 circles.
Non-transformer wireless telecommunications AC clip-on ammeter of the present invention increases the coil of independently powering at pincerlike sensor internal, based on the number of turn and the wire diameter of the required operate power power supply coil of clamp on amperemeter estimation circuit.The electric energy that power supply coil obtains is converted to and is applicable to the needed direct supply of the normal operation of reometer estimation circuit by regulator rectifier circuit.The signal that signal transformation circuit induces measuring coil converts the voltage signal that single-chip microcomputer can gather to, and the A/D converter of this signal on single chip circuit is converted to digital signal and is transferred to data terminal by wireless communication line.
Claims (3)
1. non-transformer wireless telecommunications AC clip-on ammeter, it is characterized in that, it comprises reometer shell (1), regulator rectifier circuit (2), pincerlike current sensor (3), power supply coil (5), wireless communication line (6), single chip circuit (7) and signal transformation circuit (8);
Described pincerlike current sensor (3) comprises measuring coil (4-1), iron core (4-2) and sheath (4-3);
Regulator rectifier circuit (2), wireless communication line (6), single chip circuit (7) and signal transformation circuit (8) are all placed in reometer shell (1),
It is upper that described measuring coil (4-1) and power supply coil (5) are all wrapped in iron core (4-2), and measuring coil (4-1), power supply coil (5) and iron core (4-2) are all placed in sheath (4-3);
The current signal output end of power supply coil (5) connects the current signal input end of regulator rectifier circuit (2), and after the rectifying and voltage-stabilizing of regulator rectifier circuit (2), signal output part connects power supply signal input end, the power supply signal input end of single chip circuit (7) and the power supply signal input end of signal transformation circuit (8) of wireless communication line (6) simultaneously;
The pincerlike current signal that pincerlike current sensor (3) gathers inputs to signal transformation circuit (8) by measuring coil (4-1), the signal output part of signal transformation circuit (8) connects the reshaping signal input end of single chip circuit (7), and the wireless signal output terminal of single chip circuit (7) connects the signal input part of wireless communication line (6).
2. non-transformer wireless telecommunications AC clip-on ammeter according to claim 1, is characterized in that, the number of turn of measuring coil (4) is 1000 circles.
3. non-transformer wireless telecommunications AC clip-on ammeter according to claim 1 and 2, is characterized in that, the number of turn of power supply coil (5) is 200 circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410050255.9A CN103743941B (en) | 2014-02-13 | 2014-02-13 | Non-transformer wireless telecommunications AC clip-on ammeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410050255.9A CN103743941B (en) | 2014-02-13 | 2014-02-13 | Non-transformer wireless telecommunications AC clip-on ammeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103743941A true CN103743941A (en) | 2014-04-23 |
| CN103743941B CN103743941B (en) | 2016-08-17 |
Family
ID=50500977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410050255.9A Active CN103743941B (en) | 2014-02-13 | 2014-02-13 | Non-transformer wireless telecommunications AC clip-on ammeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103743941B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182060A (en) * | 2015-10-08 | 2015-12-23 | 三峡大学 | Self-power distributed wireless current sensor |
| CN107228969A (en) * | 2017-06-15 | 2017-10-03 | 国网浙江义乌市供电公司 | Multipurpose electric flow table and control method with different measurement accuracy |
| CN107255963A (en) * | 2017-06-15 | 2017-10-17 | 国网浙江义乌市供电公司 | Multipurpose electric flow table and control method |
| CN109975591A (en) * | 2019-03-28 | 2019-07-05 | 漳州市玉山电子制造有限公司 | A kind of exchange clip-on multimeter and its coil-winding method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6040688A (en) * | 1998-01-28 | 2000-03-21 | Liaisons Electronique - Mecaniques Lem S.A. | Electrical current supply device with incorporated electrical current sensor |
| CN101728076A (en) * | 2010-01-13 | 2010-06-09 | 武汉本杰明自动化设备工程有限公司 | Micropower infrared-communication current transformer |
| CN102508005A (en) * | 2011-11-17 | 2012-06-20 | 北京四方继保自动化股份有限公司 | Safe wireless transmission current measuring device |
| CN102590574A (en) * | 2012-03-14 | 2012-07-18 | 昆明迪森电气有限公司 | Digital current transformer based on induction power supply and monitoring method for digital current transformer |
| CN203337722U (en) * | 2013-07-26 | 2013-12-11 | 大厂回族自治县开元电力技术有限公司 | Voltage and current collecting device of grid overhead transmission line |
-
2014
- 2014-02-13 CN CN201410050255.9A patent/CN103743941B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6040688A (en) * | 1998-01-28 | 2000-03-21 | Liaisons Electronique - Mecaniques Lem S.A. | Electrical current supply device with incorporated electrical current sensor |
| CN101728076A (en) * | 2010-01-13 | 2010-06-09 | 武汉本杰明自动化设备工程有限公司 | Micropower infrared-communication current transformer |
| CN102508005A (en) * | 2011-11-17 | 2012-06-20 | 北京四方继保自动化股份有限公司 | Safe wireless transmission current measuring device |
| CN102590574A (en) * | 2012-03-14 | 2012-07-18 | 昆明迪森电气有限公司 | Digital current transformer based on induction power supply and monitoring method for digital current transformer |
| CN203337722U (en) * | 2013-07-26 | 2013-12-11 | 大厂回族自治县开元电力技术有限公司 | Voltage and current collecting device of grid overhead transmission line |
Non-Patent Citations (1)
| Title |
|---|
| 彭建声 等: "无电源小量程钳形电流表的制作", 《电测与仪表》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182060A (en) * | 2015-10-08 | 2015-12-23 | 三峡大学 | Self-power distributed wireless current sensor |
| CN105182060B (en) * | 2015-10-08 | 2018-07-24 | 三峡大学 | A kind of self-powered distributed wireless current sensor |
| CN107228969A (en) * | 2017-06-15 | 2017-10-03 | 国网浙江义乌市供电公司 | Multipurpose electric flow table and control method with different measurement accuracy |
| CN107255963A (en) * | 2017-06-15 | 2017-10-17 | 国网浙江义乌市供电公司 | Multipurpose electric flow table and control method |
| CN107255963B (en) * | 2017-06-15 | 2019-05-10 | 国网浙江义乌市供电公司 | Multipurpose ammeter and control method |
| CN109975591A (en) * | 2019-03-28 | 2019-07-05 | 漳州市玉山电子制造有限公司 | A kind of exchange clip-on multimeter and its coil-winding method |
| CN109975591B (en) * | 2019-03-28 | 2024-02-23 | 漳州市玉山电子制造有限公司 | AC pincerlike multipurpose meter and coil winding method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103743941B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105182060B (en) | A kind of self-powered distributed wireless current sensor | |
| CN204214962U (en) | A kind of charger common-mode noise test circuit and proving installation | |
| CN104237604A (en) | Current monitoring warning device for overhead transmission line | |
| CN103743941A (en) | Wireless communication clamp alternating current ammeter without power supply | |
| CN203881884U (en) | Power distribution network overhead line fault monitoring device | |
| CN103115690A (en) | Method of online monitoring for high-voltage switch contact temperature rise | |
| CN105334375A (en) | PT-CT combined device capable of being installed in charged mode | |
| CN108872684B (en) | A new passive AC current acquisition circuit | |
| CN215493941U (en) | Self-energy-taking wireless partial discharge detection device and system | |
| CN203551765U (en) | Zero load on-site electric energy meter testing device | |
| CN104158306A (en) | Wide current range CT electricity taking device | |
| CN204945238U (en) | A kind of self-powered distributed wireless current sensor | |
| CN202177693U (en) | Industrial frequency withstand voltage and insulation resistance testing apparatus for current transformer | |
| CN103941164A (en) | Portable intelligent dual-purpose electronic device for partial discharge and on-line monitoring of transformer | |
| CN102095924A (en) | Detection device for power utilization and measurement of high-voltage circuit | |
| CN203929946U (en) | A kind of interconnecting cable induced field test device | |
| CN103308744B (en) | High-tension cable gauze screen ground wire leakage current detector | |
| CN204143613U (en) | A kind of capacitive current transformer major insulation state specialty inspection device | |
| CN211123000U (en) | Wireless measurement ammeter | |
| CN207039201U (en) | A three-phase power system | |
| CN204065220U (en) | Electric current doubly changes testing clamp device | |
| CN203825077U (en) | Large-current collection device for valve side of rectifier transformer | |
| CN203858330U (en) | Portable intelligent electronic device for monitoring partial discharge of transformer online | |
| CN107394800A (en) | A kind of three-phase power supply system | |
| CN203365528U (en) | Device for on-line detection of high-voltage current |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |