CN205080201U - A intelligent electric power collection module for switch board - Google Patents
A intelligent electric power collection module for switch board Download PDFInfo
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- CN205080201U CN205080201U CN201520625945.2U CN201520625945U CN205080201U CN 205080201 U CN205080201 U CN 205080201U CN 201520625945 U CN201520625945 U CN 201520625945U CN 205080201 U CN205080201 U CN 205080201U
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Abstract
The utility model discloses an intelligent electric power collection module for switch board, the signal of voltage and current of characterized by modular structure spare 1 introduces collection module, modular structure spare 1 include switching power supply circuit 2, hand over and adopt metering circuit 3, core treatment circuit 4, micropower radio communication circuit 5, the advantage: the module has characteristics such as small, light in weight, with low costs, easy installation, through response and the realization of wireless mode voltage electric current and the power metering to power distribution loop, effectively monitors the power consumption information and the electric energy quality in power consumption return circuit to the realization becomes more meticulous, and the power consumption is managed and the response of demand side, reaches orderly power consumption and energy saving and consumption reduction's purpose, makes and promotes efficiency monitoring enable on a large scale.
Description
Technical field
What the utility model designed is a kind of intelligent electric power acquisition module for power distribution cabinet, belongs to energy efficiency monitoring technical field.
Background technology
In order to realize the become more meticulous management of power use and Demand Side Response, reaching ordered electric and energy-saving and cost-reducing object, by electric unit except to except the monitoring of total electricity consumption loop, also needing to expand to and each branch's electricity consumption loop is monitored.Prior art generally adopts and install the equipment such as current transformer, collector, communication module additional in each duplexure, realizes each power information in electricity consumption loop and the monitoring of the quality of power supply.
Current transformer in conventional electric power system (is commonly referred to as instrument transformer by a mutual inductor and secondary mutual inductor, be contained in collector) composition, volume is large, cost is high, installs difficulty by in-site installation space constraint, and even some duplexure needs transformation to install; Many with the duplexure of electric unit, every loop all needs the equipment such as access current transformer, collector, communication module, and equipment cost is high; In addition collector needs to access voltage signal from each branch road in scene, will carry out power failure operation during installation, impacts to the production by electric unit, operation; Because access cable is many, the wiring of specialty to be carried out during construction, installation difficulty and workload is large, executive cost is high, long construction period.
Summary of the invention
The utility model proposes a kind of intelligent electric power acquisition module for power distribution cabinet, be intended to the above-mentioned defect overcome existing for prior art, realize the fusion of traditional primary current mutual inductor and secondary current mutual inductor, on the impact of electricity consumption production of units operation nothing in installation process.
Technical solution of the present utility model: for the intelligent electric power acquisition module of power distribution cabinet, is characterized in that the voltage and current signal of modular structure part 1 introduces acquisition module; Described modular structure part 1 comprises switching power circuit 2, hands over and adopt metering circuit 3, core processing circuit 4, micro power radio communication circuit 5; Wherein the signal output part of switching power circuit 2 connects with the signal input part of core processing circuit 4, first signal input/output terminal of core processing circuit 4 connects with handing over the signal input/output end adopting metering circuit 3, and the secondary signal input/output terminal of core processing circuit 4 connects with the signal input/output end of micro power radio communication circuit 5; Described modular structure part 1, when power cable not power-off, module to be installed on cable and to be that acquisition module is powered by acupuncture power taking, tested voltage and current signal is introduced in acquisition module simultaneously, when therefore module is installed, loss of outage can not be brought to user.
The utility model advantage: by the mode of measurement of inductance, direct measure field hundreds of ampere big current is made to become possibility, without the need to repeatedly being converted by the signal of secondary current mutual inductor by sampling front-end, while reducing costs, greatly reduce on-the-spot wiring complexity.Module has the features such as volume is little, lightweight, cost is low, easy installation, by monitoring the power information of power circuit and the quality of power supply, thus realize becoming more meticulous the management of power use and Demand Side Response, reach ordered electric and energy-saving and cost-reducing object, make large-scale promotion energy efficiency monitoring become possibility.
Accompanying drawing illustrates:
Fig. 1 is intelligent electric power acquisition module structured flowchart;
Fig. 2 is switching power circuit schematic diagram;
Fig. 3 is that metering circuit schematic diagram is adopted in friendship;
Fig. 4 is core processing circuit schematic diagram;
Fig. 5 is micro power radio communication circuit theory diagrams;
In figure, 2-1 is 2-interactive interface 1,2-2 be 2-interactive interface 2,3-1 be 3-interactive interface 1,3-2 be 3-interactive interface 2,4-1 be 4-interactive interface Isosorbide-5-Nitrae-2 are 4-interactive interfaces 2,4-3 be 4-interactive interface 3,5-1 is 5-interactive interface 1.
Embodiment:
Contrast accompanying drawing 1, for the intelligent electric power acquisition module of power distribution cabinet, its structure is that the voltage and current signal of modular structure part 1 introduces acquisition module; Described modular structure part 1 comprises switching power circuit 2, hands over and adopt metering circuit 3, core processing circuit 4, micro power radio communication circuit 5; Wherein the signal output part of switching power circuit 2 connects with the signal input part of core processing circuit 4, first signal input/output terminal of core processing circuit 4 connects with handing over the signal input/output end adopting metering circuit 3, and the secondary signal input/output terminal of core processing circuit 4 connects with the signal input/output end of micro power radio communication circuit 5; Described modular structure part 1, to be installed to module when power cable not power-off on cable and to be that acquisition module is powered by acupuncture power taking, tested voltage and current signal is introduced gathering mould simultaneously
In block, when therefore module is installed, loss of outage can not be brought to user.
Described switching power circuit 2, adopt copped wave mapping mode 220V alternating voltage to be converted to 3.3V direct current and export, this scheme topological structure is simple, and components and parts are few, and cloth board space is little, can realize AC/DC conversion under the prerequisite of low cost, small size.
Metering circuit 3 is adopted in described friendship, the voltage that can gather connection circuit also realizes the electric current metering of distribution line by the mode of induction indirectly, direct measure field hundreds of ampere big current is made to become possibility, without the need to repeatedly being converted by the signal of secondary current mutual inductor by sampling front-end, while reducing costs, greatly reduce on-the-spot wiring complexity.
Described core processing circuit 4, the electric current and voltage that metering circuit 3 can be gathered carries out process in real time and calculates the power of test line and the power consumption information of Different periods, and can carry out electric energy quality monitoring to distribution line.
Described micro power radio communication circuit 5, can realize the command interaction between acquisition module and electrical gateway and data communication.
The technical solution of the utility model is further described below in conjunction with accompanying drawing:
Contrast accompanying drawing 1, switching power circuit 2 realizes input voltage to be converted to system works power supply, hand over and adopt metering circuit 3 and to achieve a butt joint the metering of line line voltage distribution electric current and power, core processing circuit 4 realizes systemic-function and configures and play coordination, control to hand over the effect of metering circuit 3 and micro power radio communication circuit 5 of adopting, and micro power radio communication circuit 5 then realizes the communication function between acquisition module and electrical gateway.
Contrast accompanying drawing 2, switch power supply route current rectifying and wave filtering circuit, decompression converting circuit and DC/DC circuit form.220V ac voltage signal is introduced [2-interactive interface 1] place by modular structure part 1, the 220V AC-input voltage of input is converted to pulsating dc voltage by current rectifying and wave filtering circuit, the DC voltage that rectification goes out is about 1.4 times of input ac voltage effective value, D3 is the switch chip of withstand voltage 650V, under the cooperation of peripheral circuit, high voltage direct current is converted to 12V DC voltage, D5 is the DC/DC chip of input voltage 28V, realizes 12V DC voltage being converted to 3.3V and is exported as system provides working power by [2-interactive interface 2].
Contrast accompanying drawing 3, friendship is adopted metering circuit and is made up of voltage sample circuit, current sampling circuit and computation chip.Hand over [the 3-interactive interface 1] of adopting metering circuit in parallel with [the 2-interactive interface 1] of switching power circuit, voltage sample circuit adopts the mode of electric resistance partial pressure to realize 220V AC signal being converted to the 220mV AC signal meeting computation chip input range; Divider resistance adopts the object of 5 to be that raising is withstand voltage, and when preventing there are the fluctuations such as surge at input end, sample resistance burns out.Current sampling circuit adopts the mode sampling current signal of induction indirectly: in modular structure part, toroidal core is housed, when module is installed, electric power cable to be measured passes from magnetic core, magnetic core is open type (cutting off from centre), and Hall chip D2, D3 are arranged on the opening part of toroidal core; When the cable in magnetic core is by alternating current, magnetic core induces the magnetic field of alternation, and then Hall chip induces the voltage signal of alternation, and input computation chip D5 after being amplified by operational amplifier D1 by this signal, current signal has sampled.Computation chip realizes the voltage of input, current signal collection calculate corresponding meritorious, reactive power, and computation chip carries out data interaction and command response by [3-interactive interface 2] and core processing circuit 4.
Contrast accompanying drawing 4, core processing circuit is made up of single-chip microcomputer D1, storage chip D2, watchdog chip D4 and LED light.Single-chip microcomputer D1 is acquisition module and core, realizes acquisition module functional configuration and overall coordinated management.The operating voltage of core processing circuit 4 is 3.3V, and adopting metering circuit 2 by friendship is provided by [2-interactive interface 2]; Core processing circuit 4 adopts metering module 3 by [4 interactive interface 2] and [4 interactive interface 2] for friendship and micropower wireless communication module 5 provides power supply and interactive signal.The address of storage chip D2 storage of collected module and the information about power of collection, the effect of watchdog chip D4 is rear to system reset in single-chip microcomputer D1 deadlock, ensures that acquisition module there will not be long-time deadlock situation.The duty of the LED light energy indicating module of module, and existing i.e. module power taking success after pilot lamp is bright when mounted, without the need to carrying out power operation to electric power cable, avoid causing loss of outage to user.
Contrast accompanying drawing 5, micro power radio communication circuit is made up of radio frequency chip D6 and RF transmit-receive circuit.Communication between acquisition module with electrical gateway relies on micro power radio communication circuit 5 to realize: communicated by [5 interactive interface 1] between core processing circuit 4 with micro power radio communication circuit 5, radio frequency chip D6 carries out modulation and demodulation to the signal of air transmission, and RF transmit-receive circuit then completes transmitting-receiving and the filtration of out-of-band signal of data.
According to electromagnetic induction theorem, time in electric power cable by alternating current, around will produce alternating magnetic field, the electric current passed through in induction level and cable is directly proportional; By cable through toroidal core, then the magnetic induction density in magnetic core is directly proportional to the electric current in cable, measures the field intensity in magnetic core, can calculate the size of current passed through in cable; Utilize Hall effect, cut by toroidal core, put into Hall chip at section part, the output voltage of Hall chip is directly proportional to the magnetic induction density in magnetic core.Therefore measure Hall chip output voltage, the electric current passed through in cable can be calculated.
Claims (6)
1., for the intelligent electric power acquisition module of power distribution cabinet, it is characterized in that the voltage and current signal of modular structure part introduces acquisition module; Described modular structure part comprises switching power circuit, hands over and adopt metering circuit, core processing circuit, micro power radio communication circuit; Wherein the signal output part of switching power circuit connects with the signal input part of core processing circuit, first signal input/output terminal of core processing circuit connects with handing over the signal input/output end adopting metering circuit, and the secondary signal input/output terminal of core processing circuit connects with the signal input/output end of micro power radio communication circuit.
2. the intelligent electric power acquisition module for power distribution cabinet according to claim 1, is characterized in that described switch power supply route current rectifying and wave filtering circuit, decompression converting circuit and DC/DC circuit form.
3. the intelligent electric power acquisition module for power distribution cabinet according to claim 1, is characterized in that described friendship is adopted metering circuit and is made up of voltage sample circuit, current sampling circuit and computation chip.
4. the intelligent electric power acquisition module for power distribution cabinet according to claim 1, is characterized in that, in described modular structure part, toroidal core is housed, and toroidal core is that namely open type is cut off from centre, and two Hall chips are arranged on the opening part of toroidal core.
5. the intelligent electric power acquisition module for power distribution cabinet according to claim 1, is characterized in that described core processing circuit is made up of single-chip microcomputer, storage chip, watchdog chip and LED light.
6. the intelligent electric power acquisition module for power distribution cabinet according to claim 1, is characterized in that described micro power radio communication circuit is made up of radio frequency chip and RF transmit-receive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520625945.2U CN205080201U (en) | 2015-08-19 | 2015-08-19 | A intelligent electric power collection module for switch board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520625945.2U CN205080201U (en) | 2015-08-19 | 2015-08-19 | A intelligent electric power collection module for switch board |
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| CN205080201U true CN205080201U (en) | 2016-03-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158600A (en) * | 2015-08-19 | 2015-12-16 | 南京新联电子股份有限公司 | Intelligent power acquisition module for power distribution cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158600A (en) * | 2015-08-19 | 2015-12-16 | 南京新联电子股份有限公司 | Intelligent power acquisition module for power distribution cabinet |
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