CN208060610U - It is a kind of that electricity and measurement switching apparatus and system are taken based on single magnetic loop - Google Patents
It is a kind of that electricity and measurement switching apparatus and system are taken based on single magnetic loop Download PDFInfo
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- CN208060610U CN208060610U CN201820728171.XU CN201820728171U CN208060610U CN 208060610 U CN208060610 U CN 208060610U CN 201820728171 U CN201820728171 U CN 201820728171U CN 208060610 U CN208060610 U CN 208060610U
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Abstract
The utility model provide it is a kind of based on single magnetic loop take electricity and measurement switching apparatus and system, it is described based on single magnetic loop take electricity and measurement switching device include：It takes electricity and measurement switching module, power management module, measure conditioning module and main control module, it is described that electricity and measurement switching module is taken to be connected to the main control module by the power management module, described that electricity and measurement switching module is taken to be connected to the main control module by the measurement conditioning module, the main control module takes electricity and measurement switching module to be connected with described.High current signal on distributing cable is become secondary small signal by the utility model using electromagnetic induction, and then it can either be used for realizing power supply, again can as sensor output for realizing measurement, the switching for taking electricity and measuring can be efficiently realized by single magnetic coil, simplify apparatus structure, it effectively reduces cost and mitigates weight so that installation and later maintenance are more convenient.
Description
Technical field
The utility model is related to a kind of system for distribution network of power malfunction monitoring fields, more particularly to one kind is based on single magnetic loop
Take electricity and measurement switching device, and be related to include this based on single magnetic loop take electricity and measurement switching device system.
Background technology
The fault monitoring device of intelligent distribution network, is generally directly installed on the distribution line of 6KV to 35KV, this kind of device
Installing mechanism include magnetic loop, by electromagnetic induction acquire sensor secondary current, realize to power transmission cable primary current
Real time monitoring, realize the function of measurement.But this existing device is directly installed on cable, lacks power supply；And it installs additional
PT power supply modes, are bound to cause cost and space increases, while primary equipment global reliability being caused to decline.In addition, according to
Solar photovoltaic powered mode, is affected by natural environment and climate, nor specially suitable scheme.Therefore, the prior art pair
In system for distribution network of power malfunction monitoring take electricity and measure, cost is excessively high, and unfailing performance does not reach requirement, and install and
Maintenance difficulties are big.
Invention content
Technical problem to be solved in the utility model is to need offer a kind of small, at low cost, and installs and safeguard
Electricity and measurement switching device are easily taken based on single magnetic loop, and further provide for including that this takes electricity based on single magnetic loop
With the system of measurement switching device.
In this regard, the utility model provide it is a kind of based on single magnetic loop take electricity and measurement switching device, including：It takes electricity and surveys
It measures handover module, power management module, measure conditioning module and main control module, it is described that electricity and measurement switching module is taken to pass through institute
It states power management module and is connected to the main control module, it is described that electricity and measurement switching module is taken to connect by the measurement conditioning module
It is connected to the main control module, the main control module takes electricity and measurement switching module to be connected with described.
Further improvement of the utility model is, described to take electricity and measurement switching module including taking electric amplitude limiter circuit and adopting
Sample circuit, it is described that electric amplitude limiter circuit is taken to be connected to the main control module by the sample circuit.
Further improvement of the utility model is, described to take electric amplitude limiter circuit to be connected to by the sample circuit described
Measure conditioning module.
Further improvement of the utility model is, described that electric amplitude limiter circuit is taken to be connected with the power management module.
Further improvement of the utility model is, described to take electric amplitude limiter circuit including taking electric unit and clipping unit, institute
It states and electric unit is taken to be connected to single magnetic loop output end on distributing cable, it is described that electric unit is taken to be connected to by the clipping unit
The power management module.
Further improvement of the utility model is that the sample circuit includes switch control unit and sampling unit, institute
It states and electric amplitude limiter circuit is taken to be connected to the sampling unit by the switch control unit.
Further improvement of the utility model is that the power management module is connected with the measurement conditioning module.
Further improvement of the utility model is that the power management module includes power supply circuit and accumulator, institute
It states power supply circuit to be respectively connected with the main control module and measurement conditioning module, the accumulator and the main control module phase
Connection.
Further improvement of the utility model is that the accumulator includes storage capacitor.
The utility model also provide it is a kind of based on single magnetic loop take electricity and measurement switching system, include mounted on distribution
Single magnetic coil on cable and electricity and measurement switching device are taken based on single magnetic loop as described above, it is described to take electricity and measure
Handover module is connected with single magnetic loop output end of single magnetic coil.
Compared with prior art, the beneficial effects of the utility model are：It will be big on distributing cable using electromagnetic induction
Current signal becomes secondary small signal, and then can either be used for realizing power supply, but can as sensor output for realizing
It measures, the switching for taking electricity and measuring can be efficiently realized by single magnetic coil, apparatus structure is simplified, effectively reduces cost simultaneously
Mitigate weight so that installation and later maintenance are more convenient.
Description of the drawings
Fig. 1 is a kind of modular structure block diagram of embodiment of the utility model；
Fig. 2 is a kind of circuit diagram for taking electricity and measurement switching module of embodiment of the utility model；
Fig. 3 is a kind of circuit diagram of the power management module of embodiment of the utility model；
Fig. 4 is a kind of circuit diagram of the measurement conditioning module of embodiment of the utility model；
Fig. 5 is a kind of circuit diagram of the main control module of embodiment of the utility model.
Specific implementation mode
Below in conjunction with the accompanying drawings, the preferably embodiment of the utility model is described in further detail.
As shown in Figure 1, this example provide it is a kind of based on single magnetic loop take electricity and measurement switching device, including：It takes electricity and surveys
It measures handover module 1, power management module 2, measure conditioning module 3 and main control module 4, it is described to take electricity and measurement switching module 1
It is connected to the main control module 4 by the power management module 2, it is described that electricity and measurement switching module 1 is taken to pass through the measurement
Conditioning module 3 is connected to the main control module 4, and the main control module 4 takes electricity and measurement switching module 1 to be connected with described.
This example is mounted on the output end of single magnetic coil 5 on distributing cable, using electromagnetic induction principle, by distributing cable
（High-tension line）In high current signal become secondary small signal, which can either be used for described based on single magnetic loop
Electricity and the power supply of measurement switching device are taken, and can be as the output of sensor for measuring；Its switching between taking electricity and measuring,
And the data processings such as sampling, it is all realized and is controlled by the main control module 4, the main control module 4 is preferably embedded processing
Any one processor such as module, MCU or microcontroller.
As shown in Fig. 2, electricity and measurement switching module 1 is taken to realize the decoupling for taking electricity and measuring function described in this example so that
Single magnetic loop of single magnetic coil 5 on distributing cable realizes test function, and without energy loss in current-taking function, ensures to pass
Cable current of secondary output actual response of sensor.
As shown in Fig. 2, it includes taking electric amplitude limiter circuit 11 and sample circuit 12 that electricity and measurement switching module 1 are taken described in this example,
It is described that electric amplitude limiter circuit 11 is taken to be connected to the main control module 4 by the sample circuit 12, it is described to take electric amplitude limiter circuit 11 logical
It crosses the sample circuit 12 and is connected to the measurement conditioning module 3, it is described to take electric amplitude limiter circuit 11 and the power management module 2
It is connected.
More preferably, as shown in Fig. 2, it includes taking electric unit 111 and clipping unit to take electric amplitude limiter circuit 11 described in this example
112, the single magnetic loop output end for taking electric unit 111 to be connected on distributing cable is described that electric unit 111 is taken to pass through the limit
Width unit 112 is connected to the power management module 2；The sample circuit 12 includes switch control unit 121 and sampling unit
122, it is described that electric amplitude limiter circuit 11 is taken to be connected to the sampling unit 122 by the switch control unit 121.The distribution wire
Single magnetic loop output end on cable is single magnetic loop secondary coil output end of single magnetic coil 5, that is, AC1 in Fig. 2 and
AC2。
As shown in Fig. 2, described take in electric amplitude limiter circuit 11, AC1 and AC2 are single magnetic loop secondary coils of single magnetic coil 5
The exchange of output end+with exchange-.It is described take electricity and measurement switching module 1 realize current-taking function when, take electric unit by described
111 rectifier bridge D1, capacitance CE1 and VCC export direct current signal；The thyristor Q1 and voltage-stabiliser tube D3 of the clipping unit 112 are used
In amplitude limit, ensure it is prodigious in primary current, VCC output direct current signal limitation in the reasonable scope, prevent from burning out
The circuit of the power management module 2 of rear class.
As shown in Fig. 2, in the sample circuit 12, this takes electricity and measurement switching module 1 when realizing measurement function, described
The control signal of main control module 4 by control signal output DRV1 and control signal output DRV2, enable metal-oxide-semiconductor Q2 and
Metal-oxide-semiconductor Q3 conductings, AC1 and AC2 are formed into a loop by sampling resistor R2, and I_AD enters the measurement conditioning of rear class as sampled voltage
Module 3.
It can thus be seen that electricity and the realization of measurement switching module 1 is taken to take electricity and measure function described in this example, there is no first devices
Part is public, realizes decoupling well by hardware mode.
Power management module 2 described in this example is connected with the measurement conditioning module 3, is supplied for the measurement conditioning module 3
Electricity；As shown in figure 3, power management module 2 described in this example preferably includes power supply circuit 21 and accumulator 22, the power supply circuit
21 are connected with the main control module 4 and measurement conditioning module 3 respectively, and the accumulator 22 is connected with the main control module 4
It connects.
As shown in Figures 3 to 5, the VDD of the power management module 2 respectively with the main control chip of the main control module 4
The VDD of VDD and the amplifier for measuring conditioning module 3 is connected, the VDDin of the power management module 2 and the survey
Amount conditioning module 3 VDDin be connected, it is described measure conditioning module 3 AD_I and ref2.5 respectively with the main control module 4
AD_I is connected with ref2.5.
VCC of the power supply circuit 21 of power management module 2 described in this example after taking electricity exports 5V by chip U5, is described
Main control module 4 and measurement conditioning module 3 are powered.It is the accumulator 22 in the case that 5V power supplys will also take electric abundance again simultaneously
Super capacitor charging, realize the function of energy storage, and then ensure that whole device and its place system have a power failure or bear in a cable
It, being capable of continue working in the case of carrying very little.
The circuit theory schematic diagram of conditioning module 3 is measured described in this example preferably as shown in figure 4, the measurement conditioning module 3 is used
AC sampling voltage I_AD is filtered in realizing, and is superimposed DC voltage benchmark.This example by select suitable benchmark and
Electric resistance partial pressure, when ensureing a cable current maxima, the sample waveform of secondary survey always the signal after 0V or more, conditioning into
The main control module 4 for entering rear class realizes analog-to-digital conversion.
The circuit theory schematic diagram of main control module 4 described in this example is preferably as shown in figure 5, for realizing control function, wherein
DRV1 and DRV2 is the driving signal output end of control module, opens the drive signal of the driving signal output end, then enters and survey
Amount state（Sample circuit 12）；The drive signal is closed, then enters and takes electricity condition（Take electric amplitude limiter circuit 11）.
AD_I is through under measuring state, through the sampling analog quantity after the measurement conditioning module 3, with the main control module
ADC inside 4 microcontroller realizes analog-to-digital conversion, then carries out Digital Signal Processing, restores a cable current value.
This example also provide it is a kind of based on single magnetic loop take electricity and measurement switching system, include on distributing cable
Single magnetic coil 5 and as described above based on single magnetic loop take electricity and measurement switching device, it is described take electricity and measurement switching
Module is connected with single magnetic loop output end of single magnetic coil 5.Electricity and measurement switching module 1 is taken to pass through described in this example described
Single magnetic coil 5 is carried out taking electricity and be measured to the current signal in distributing cable, and entire scheme completely can be real by hardware circuit
Reveal and.
As described above, electricity and measurement switching module 1 is taken to realize decoupling on hardware described in this example, this is that the two can
With the basis of switching, then the main control module 4 completes relevant control function, such as analog-to-digital conversion（ADC）With timing control etc..
In conclusion the high current signal on distributing cable is become secondary small signal by this example using electromagnetic induction, in turn
Can either be used for realizing power supply, but can as sensor output for realizing measurement, can be efficient by single magnetic coil
It realizes the switching for taking electricity and measuring, simplifies apparatus structure, effectively reduce cost and mitigate weight so that installation and later maintenance
It is more convenient.
The specific implementation mode of the above is the better embodiment of the utility model, and it is new not to limit this practicality with this
The specific implementation range of type, the scope of the utility model includes being not limited to present embodiment, all according to the utility model
Shape, structure made by equivalence changes it is within the protection scope of the present utility model.
Claims (10)
1. a kind of taking electricity and measurement switching device based on single magnetic loop, which is characterized in that including：Take electricity and measurement switching mould
Block, power management module measure conditioning module and main control module, described that electricity and measurement switching module is taken to pass through the power supply pipe
Reason module is connected to the main control module, described to take described in electricity and measurement switching module be connected to by the measurements conditioning module
Main control module, the main control module take electricity and measurement switching module to be connected with described.
2. according to claim 1 take electricity and measurement switching device based on single magnetic loop, which is characterized in that described to take electricity
Include taking electric amplitude limiter circuit and sample circuit with measurement switching module, it is described that electric amplitude limiter circuit is taken to be connected by the sample circuit
To the main control module.
3. according to claim 2 take electricity and measurement switching device based on single magnetic loop, which is characterized in that described to take electricity
Amplitude limiter circuit is connected to the measurement conditioning module by the sample circuit.
4. according to claim 2 take electricity and measurement switching device based on single magnetic loop, which is characterized in that described to take electricity
Amplitude limiter circuit is connected with the power management module.
5. taking electricity and measurement switching device, feature to exist based on single magnetic loop according to claim 2 to 4 any one
In described to take electric amplitude limiter circuit including taking electric unit and clipping unit, the single magnetic for taking electric unit to be connected on distributing cable
Loop output, it is described that electric unit is taken to be connected to the power management module by the clipping unit.
6. taking electricity and measurement switching device, feature to exist based on single magnetic loop according to claim 2 to 4 any one
Include switch control unit and sampling unit in, the sample circuit, described to take electric amplitude limiter circuit to pass through switch control single
Member is connected to the sampling unit.
7. according to any one of claims 1 to 4, take electricity and measurement switching device, feature to exist based on single magnetic loop
In the power management module is connected with the measurement conditioning module.
8. according to claim 7 take electricity and measurement switching device based on single magnetic loop, which is characterized in that the power supply
Management module includes power supply circuit and accumulator, the power supply circuit respectively with the main control module and measure conditioning module phase
Connection, the accumulator are connected with the main control module.
9. according to claim 8 take electricity and measurement switching device based on single magnetic loop, which is characterized in that the energy storage
Circuit includes storage capacitor.
10. a kind of taking electricity and measurement switching system based on single magnetic loop, which is characterized in that include on distributing cable
Single magnetic coil and as described in claim 1 to 9 any one based on single magnetic loop take electricity and measurement switching device, institute
It states and electricity and measurement switching module and single magnetic loop output end of single magnetic coil is taken to be connected.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820650729 | 2018-05-03 | ||
| CN2018206507297 | 2018-05-03 |
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| Publication Number | Publication Date |
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| CN208060610U true CN208060610U (en) | 2018-11-06 |
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ID=63982037
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| CN201820728171.XU Active CN208060610U (en) | 2018-05-03 | 2018-05-16 | It is a kind of that electricity and measurement switching apparatus and system are taken based on single magnetic loop |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710017A (en) * | 2018-05-03 | 2018-10-26 | 南京蓝园精瑞电气有限公司 | It is a kind of that electricity and measurement switching apparatus and system are taken based on single magnetic loop |
| CN110208597A (en) * | 2019-05-23 | 2019-09-06 | 宁波大学 | A kind of self-power wireless current monitoring system based on simplex winding current transformer |
| CN113447083A (en) * | 2021-08-05 | 2021-09-28 | 广州晓网电子科技有限公司 | Single-coil passive wireless current temperature detection device |
-
2018
- 2018-05-16 CN CN201820728171.XU patent/CN208060610U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710017A (en) * | 2018-05-03 | 2018-10-26 | 南京蓝园精瑞电气有限公司 | It is a kind of that electricity and measurement switching apparatus and system are taken based on single magnetic loop |
| CN108710017B (en) * | 2018-05-03 | 2024-04-02 | 深圳市蓝希望电子有限公司 | Electricity taking and measuring switching device and system based on single magnetic loop |
| CN110208597A (en) * | 2019-05-23 | 2019-09-06 | 宁波大学 | A kind of self-power wireless current monitoring system based on simplex winding current transformer |
| CN110208597B (en) * | 2019-05-23 | 2021-04-23 | 宁波大学 | Self-powered wireless current monitoring system based on single-winding current transformer |
| CN113447083A (en) * | 2021-08-05 | 2021-09-28 | 广州晓网电子科技有限公司 | Single-coil passive wireless current temperature detection device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190124 Address after: 518000 3-7 Floors, 10A Building, Datianyang Industrial Zone, Shiwei, Jiangshi Community, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Co-patentee after: Nanjing Blue Garden Jing Rui Electric Co., Ltd. Patentee after: Shenzhen Lanhope Electronic Co., Ltd. Address before: Room 602, 185 Yanhu Road, Jiangning Economic and Technological Development Zone, Nanjing, Jiangsu Province Patentee before: Nanjing Blue Garden Jing Rui Electric Co., Ltd. |
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| TR01 | Transfer of patent right |