CN207301219U - Electrical energy measurement verification current loop open circuit warning device - Google Patents
Electrical energy measurement verification current loop open circuit warning device Download PDFInfo
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- CN207301219U CN207301219U CN201721084001.4U CN201721084001U CN207301219U CN 207301219 U CN207301219 U CN 207301219U CN 201721084001 U CN201721084001 U CN 201721084001U CN 207301219 U CN207301219 U CN 207301219U
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- electrical energy
- open circuit
- warning device
- energy measurement
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- 238000005259 measurement Methods 0.000 title claims abstract description 18
- 238000012795 verification Methods 0.000 title claims abstract description 14
- 238000005070 sampling Methods 0.000 claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 230000006698 induction Effects 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims description 10
- 230000003321 amplification Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 8
- 238000012806 monitoring device Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000005674 electromagnetic induction Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002964 excitative effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a kind of electrical energy measurement verification current loop open circuit warning device, including：Sampling module and monitoring module；Sampling module includes：Measure the current data sampler of three-phase current data；Monitoring module includes：Microcontroller, alarm unit and display unit；Current data sampler, alarm unit and display unit are connected with microcontroller respectively.The utility model beneficial effect：Three-phase current sampling is carried out using the current clamp with induction coil of small volume, the electric current under low current open circuit situation can be acquired exactly using the principle of electromagnetic induction；Facilitate the connection of electrical energy measurement verification current loop open circuit warning device and circuit at the same time.
Description
Technical field
It the utility model is related to Electric Energy Metering Technology field, more particularly to a kind of electrical energy measurement verification current loop open circuit report
Alarm device.
Background technology
Work in electric current secondary loop, it is that slow play is put down gently to loosen electric current testing terminal, if operation error causes out
Road, open-circuit current will slowly decline, and the small user of Smaller load is compared in some changes, if do not paid attention to being difficult to find in open circuit, in case of
To load rise would become hard to control, for avoid because equipment and personnel carelessness current loop is opened a way, caused by metering and relay protect
The increase of mutual inductor magnetic flux saturation magnetic induction degree is protected, the excitatory breakdown insulation of generation causes casualties and equipment damage.
Utility model content
The purpose of this utility model is exactly to solve the above-mentioned problems, it is proposed that a kind of electrical energy measurement verification current loop is opened
Road warning device, the device can open a way low current and accurately and effectively be monitored.
To achieve these goals, the utility model adopts the following technical solution：
A kind of electrical energy measurement verification current loop open circuit warning device, including：Sampling module and monitoring module；
The sampling module includes：Measure the current data sampler of three-phase current data；
The monitoring module includes：Microcontroller, alarm unit and display unit；
Current data sampler, alarm unit and the display unit are connected with microcontroller respectively.
Three-phase current data are by current data samplers sample and are transmitted to monitoring module, and monitoring module carries out data
Shown after processing and leakage-current alarm.
Further, further include：Communication unit；The communication unit is connected with microcontroller；The communication unit and outside
Video monitoring equipment connects.The current data collected is sent to external video monitoring device by communication unit in real time, and outside regards
Frequency monitoring device receives the real time monitoring video that current data forms open-circuit current.
Further, the current data sampler includes：The pincers with induction coil of ABC three-phase currents are gathered respectively
Head and the sampled signal process circuit being connected with induction coil.
Further, the sampled signal process circuit includes：Sequentially connected sampling resistor, signal amplification circuit, friendship
Flow effective value measurement circuit and A/D converter.Using the current clamp of small volume, lead to after secondary side current is reduced certain multiple
Over-sampling resistance, produces pressure drop on sampling resistor, and the pressure drop of generation is effective by exchanging after signal amplification circuit amplifies
Ac voltage signal is converted into direct current signal by value measuring circuit, and microcontroller is entered after A/D.
Further, the alarm unit includes：LED light and/or buzzer.
The utility model beneficial effect：
A) three-phase current sampling is carried out using the current clamp with induction coil of small volume, utilizes the original of electromagnetic induction
Reason exactly can be acquired the electric current under low current open circuit situation；Facilitate electrical energy measurement verification current loop open circuit at the same time
The connection of warning device and circuit.
B) current sampling data of sampling module is acquired and is real-time transmitted to aobvious using the SPI mouths of 8 microcontrollers
Show unit, realize three current data acquisition process and real-time display.
Brief description of the drawings
Fig. 1 verifies current loop open circuit warning device structure diagram for the utility model electrical energy measurement；
Fig. 2 verifies current loop open circuit warning device force device work sheet for the utility model electrical energy measurement.
Embodiment
The utility model is further described with embodiment below in conjunction with the accompanying drawings.
The utility model discloses a kind of electrical energy measurement verification current loop open circuit warning device, as shown in Figure 1, including：
Sampling module and monitoring module；
Wherein, sampling module includes the current data sampler of measurement three-phase current data；Current data sampler according to
The principle and lithium battery of electromagnetic induction do power supply, and current signal, the line of induction are collected using the special binding clip with induction coil
The sampled signal process circuit of circle rear end is translated into corresponding data according to the power of sampled signal.
Sampled signal process circuit specifically includes：Sequentially connected sampling resistor, signal amplification circuit, AC value are surveyed
Measure circuit and A/D converter.
Using the current clamp of small volume, secondary side current is reduced after certain multiple by sampling resistor, in sampling electricity
Pressure drop is produced in resistance, the pressure drop produced by signal amplification circuit to the electric current exported from current acquisition binding clip on sampling resistor
It is amplified, amplified signal is after ac voltage signal is converted to direct current signal by AC value measuring circuit, warp
Cross A/D converter and be converted into digital signal and enter microcontroller.
In the present embodiment, signal amplification circuit uses INA282 instrument amplifiers, amplification of checking the mark, and amplification factor is 50 times,
Powered using+5V.AC value measuring circuit is using the special virtual value computing units of AD637, positive and negative 5V dual power supplies,
Output ripple is further reduced using first order pole working method.AD conversion module has four-way using 16 ADS1115 of high accuracy
Road simulation input, reference voltage and sampling rate can be changed as needed.
Monitoring module includes：Microcontroller, and alarm unit, display unit and the communication unit being connected respectively with microcontroller
Member；Alarm unit and display unit are alarmed and shown for open-circuit electric current；Communication unit is real-time by open-circuit current data
External video monitoring device is sent to, forms open-circuit current video.
Preferred embodiment, main control unit of the MSP430F5529 microcontrollers as system are selected as one kind.
MSP430F5529 microcontrollers are 16 microcontrollers of high-performance low-power-consumption that American TI Company is released, and have the outer resource of abundant piece,
Including clock module, capture/comparison module, Flash modules, WatchDog Timer module, timer module, 8 passage A/D modules,
Serial communication modular and general I/O mouth mold blocks.
As one kind select preferred embodiment, display unit select serial ports type LCD, be a high-performance, low-power consumption,
Easily applicable display, can directly connect the intelligent LCD used with MCU or FPGA with serial line interface.
When the opening amperage detected is less than given threshold (generally taking 0.05A), microcontroller control alarm unit report
It is alert.When alert event occurs, alarmed by the combination of LED light or buzzer or both.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but not to this practicality newly
The limitation of type protection domain, those skilled in the art should understand that, on the basis of the technical solution of the utility model, ability
Field technique personnel need not make the creative labor the various modifications that can be made or deformation still in the protection model of the utility model
Within enclosing.
Claims (5)
- A kind of 1. electrical energy measurement verification current loop open circuit warning device, it is characterised in that including：Sampling module and monitoring mould Block；The sampling module includes：Measure the current data sampler of three-phase current data；The monitoring module includes：Microcontroller, alarm unit and display unit；Current data sampler, alarm unit and the display unit are connected with microcontroller respectively.
- 2. a kind of electrical energy measurement verification current loop open circuit warning device as claimed in claim 1, it is characterised in that also wrap Include：Communication unit；The communication unit is connected with microcontroller；The communication unit is connected with external video monitoring device.
- A kind of 3. electrical energy measurement verification current loop open circuit warning device as claimed in claim 1, it is characterised in that the electricity Flow data sampler includes：Gather the binding clip with induction coil of ABC three-phase currents respectively and be connected with induction coil Sampled signal process circuit.
- 4. a kind of electrical energy measurement verification current loop open circuit warning device as claimed in claim 3, it is characterised in that described to adopt Sample signal processing circuit includes：Sequentially connected sampling resistor, signal amplification circuit, AC value measuring circuit and A/D turn Parallel operation.
- A kind of 5. electrical energy measurement verification current loop open circuit warning device as claimed in claim 1, it is characterised in that the report Alert unit includes：LED light and/or buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721084001.4U CN207301219U (en) | 2017-08-28 | 2017-08-28 | Electrical energy measurement verification current loop open circuit warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721084001.4U CN207301219U (en) | 2017-08-28 | 2017-08-28 | Electrical energy measurement verification current loop open circuit warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207301219U true CN207301219U (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721084001.4U Active CN207301219U (en) | 2017-08-28 | 2017-08-28 | Electrical energy measurement verification current loop open circuit warning device |
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| Country | Link |
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| CN (1) | CN207301219U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740275A (en) * | 2020-06-09 | 2020-10-02 | 国网新疆电力有限公司哈密供电公司 | Open circuit processing device for current secondary circuit |
| CN113804956A (en) * | 2021-09-03 | 2021-12-17 | 国网江苏省电力有限公司 | Electric parameter on-line collecting and processing system and method for electric transmission line and mapping table obtaining method thereof |
-
2017
- 2017-08-28 CN CN201721084001.4U patent/CN207301219U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740275A (en) * | 2020-06-09 | 2020-10-02 | 国网新疆电力有限公司哈密供电公司 | Open circuit processing device for current secondary circuit |
| CN113804956A (en) * | 2021-09-03 | 2021-12-17 | 国网江苏省电力有限公司 | Electric parameter on-line collecting and processing system and method for electric transmission line and mapping table obtaining method thereof |
| CN113804956B (en) * | 2021-09-03 | 2024-05-28 | 国网江苏省电力有限公司 | On-line acquisition and processing system and method for electric parameters of power transmission line and mapping table obtaining method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 250003 2000 Wang Yue Road, Ji'nan, Shandong Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250003 2000 Wang Yue Road, Ji'nan, Shandong Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee before: State Grid Corporation of China |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210413 Address after: No. 150, Jinger Road, Daguanyuan, Shizhong District, Jinan City, Shandong Province Patentee after: Shandong Electric Power Marketing Center Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250003 2000 Wang Yue Road, Ji'nan, Shandong Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee before: STATE GRID CORPORATION OF CHINA |