CN204789719U - Air switch with measurement function - Google Patents
Air switch with measurement function Download PDFInfo
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- CN204789719U CN204789719U CN201520469786.1U CN201520469786U CN204789719U CN 204789719 U CN204789719 U CN 204789719U CN 201520469786 U CN201520469786 U CN 201520469786U CN 204789719 U CN204789719 U CN 204789719U
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- 238000005259 measurement Methods 0.000 title abstract description 6
- 230000001681 protective effect Effects 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 10
- 230000006870 function Effects 0.000 abstract description 13
- 230000005856 abnormality Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004148 unit process Methods 0.000 description 2
- TVZRAEYQIKYCPH-UHFFFAOYSA-N 3-(trimethylsilyl)propane-1-sulfonic acid Chemical compound C[Si](C)(C)CCCS(O)(=O)=O TVZRAEYQIKYCPH-UHFFFAOYSA-N 0.000 description 1
- 206010001541 Akinesia Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 210000000352 storage cell Anatomy 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Abstract
The utility model discloses an air switch with measurement function, include: power consumption information acquisition unit for the power consumption information of gathering current circuit erupts simultaneously and delivers to the treater, power consumption information includes voltage, electric current, power factor and the power consumption in presetting the time quantum, the treater is connected to power consumption information acquisition unit and memory cell are used for the follow the information acquisition unit was received power consumption message routing extremely memory cell, memory cell is used for the storage to follow treater received power consumption information, the earth leakage protection unit for break off when detecting current circuit electric leakage air switch with measurement function's switch, the RS485 interface unit is connected to the processo. Through the utility model provides an air circuit breaker has realized power consumption information and the storage that can add up equipment, and convenience of customers more rationally arranges the consumer according to power consumption information.
Description
Technical field
The utility model relates to Smart Home field, in particular to a kind of air switch with function of measuring.
Background technology
Along with the arrival in Internet of Things epoch, Smart Home industry also welcomes unprecedented opportunity to develop.Numerous Internet firm, electrical equipment manufacturer join Smart Home industry one after another, are proposed the Smart Home product that category is abundant, seize the more Smart Home market share.
Intelligent power is as the important component part of Smart Home, and the abundant and development of its product also will bring convenience for daily life and comfortable experience.Electric power and everyone is closely bound up, smart jack to access terminal product as custom power, and it will become the breakthrough point that Smart Home and intelligent power enter average family, is also experienced by the intelligent power for domestic consumer and brings qualitative leap.
Current air-break all only has simple switching function, and intelligence, is not well positioned to meet the use needs of user, poor user experience not.
Utility model content
Technical problem to be solved in the utility model is, provides one more intelligentized air-break.
Therefore, the technical solution of the utility model is as follows:
There is an air switch for function of measuring, comprising:
Power information collecting unit, for gathering the power information of current circuit and being sent to processor, described power information comprises voltage, electric current, power factor and the power consumption in preset time period;
Described processor, is connected to described power information collecting unit and storage unit, for the described power information received from described information acquisition unit is sent to described storage unit;
Described storage unit, for storing the power information received from described processor;
Residual current protective unit, for having the switch of the air switch of function of measuring described in disconnection when detecting that current circuit leaks electricity;
RS485 interface unit, is connected to described processor.
Preferably, described residual current protective unit is A type earth leakage protective device.
Described processor can be MSP430G2553 single-chip microcomputer.
Air-break in the utility model, achieve the power information that can add up equipment and store, user can check when needed, thus facilitates user more reasonably to arrange consumer according to power information, improves Consumer's Experience; RS485 interface unit can facilitate processor and extraneous mutual data transmission.
Accompanying drawing explanation
Fig. 1 is the block diagram with the air switch of function of measuring according to the utility model embodiment;
Fig. 2 is the circuit theory diagrams with the air switch of function of measuring according to the utility model embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
As shown in Figure 1, according to the air switch with function of measuring of embodiment of the present utility model, comprising:
Power information collecting unit, for gathering the power information of current circuit and being sent to processor, described power information comprises voltage, electric current, power factor and the power consumption in preset time period;
Described processor, is connected to described power information collecting unit and storage unit, for the described power information received from described information acquisition unit is sent to described storage unit;
Described storage unit, for storing the power information received from described processor;
Residual current protective unit, for having the switch of the air switch of function of measuring described in disconnection when detecting that current circuit leaks electricity;
RS485 interface unit, is connected to described processor.
Preferably, described residual current protective unit is A type earth leakage protective device.
Described processor can be MSP430G2553 single-chip microcomputer.
Air-break in the utility model, achieve the power information that can add up equipment and store, user can check when needed, thus facilitates user more reasonably to arrange consumer according to power information, improves Consumer's Experience; RS485 interface unit can facilitate processor and extraneous mutual data transmission.
In a kind of embodiment, the isolating switch in the utility model as shown in Figure 2:
Power circuit comprises two parts: 220VAC ~ 5VDC power circuit and 5VDC ~ 3V3DC power circuit two parts.These two parts all adopt Switching Power Supply scheme, and relative to Industrial Frequency Transformer and traditional LDO scheme, have power consumption little, efficiency is high, and volume is little, lightweight advantage.
220VAC ~ 5VDC power circuit adopts NCP1015 non-isolated scheme, and circuit is simple, adopts tens electronic components can realize the ac-dc conversion that AC80 ~ 260V is input to DC5V.Owing to adopting advanced dynamic self-powered (DSS), the operating voltage of NCP1015 can directly be drawn from drain electrode, therefore eliminates ancillary coil, realizes simplifying circuit, decreases the volume shared by transformer, and reduce cost.The core devices of 5VDC ~ 3V3DC power supply adopts the DC/DC switching power source chip TPS5401 of TI company, and relative to the step-down LDO of routine, power supply conversion efficiency is improved.
Power information collecting unit adopts the CS5463 metered scheme of CirrusLogic company.It is high that this chip has cost performance, and antijamming capability is strong, measuring accuracy advantages of higher.CS5463 can use the shunt of low cost or mutual inductor to measure electric current, uses divider resistance or voltage measuring transformer voltage.
The voltage measurement of power information collecting unit adopts divider resistance to realize, and 220V high pressure is through electric resistance partial pressure, and the low-voltage alternating-current small-signal of millivolt level that what R9 both sides obtained is, sends into front end piezoelectric voltage acquisition channel VIN-and VIN+ of CS5463.
The current measurement of power information collecting unit adopts copper-manganese resistance to realize, and big current, through copper-manganese resistance R10, at the low pressure small-signal of the mV level that R10 resistance both sides obtain, sends into front end electricity current acquisition passage IIN-and IIN+ of CS5463.
The voltage channel of computation chip CS5463 and current channel and peripheral circuit, send into computation chip inside by ac small signal.Two acquisition channels of this air-break metering units, all add protection diode, also can remain within certain voltage range when making two passages have undesired signal to input; Current acquisition passage also adds filter inductance and voltage dependent resistor (VDR), strengthens the antijamming capability of two passages and ensures the accuracy of data acquisition.
The effect of power-fail detection circuit is when 220V alternating current breaks suddenly, and provide a look-at-me to air-break MCU, air-break MCU carries out down Monitor Unit process according to this look-at-me.The effect of down Monitor Unit is stored in time the current power information of line attachment, and the power information preventing power down from causing is lost.
Detection of power loss front-end circuit is that 220V alternating current is converted to low pressure square-wave signal.This low pressure square-wave signal sends into TLC555ID timer, uses the power of this timer further square-wave signal can be converted to high level signal.When there being 220V alternating current, PD_INT is high level, and when not having 220V alternating current and power down, PD_INT becomes low level; Thus, when power down, PD_INT pin is by generation negative edge look-at-me to air-break MCU, and air-break MCU utilizes this look-at-me to carry out down Monitor Unit process.
That data storage cell is is AT24C64, AT24C64 is the EEPROM that memory capacity reaches 64Kbit (8K*8bit).Can cryptographic storage be selected when the data of autostore store inside memory, considerably increase the security that data store.
The MSP430G2553 that what the MCU of processor selected is in MSP430G2x53 series.The MSP430 single-chip microcomputer with super low-power consumption characteristic is particularly suitable for low cost sensing system, and this type systematic is responsible for catching simulating signal, converts it to digital value, is processed to show or be sent to host computer system to data subsequently.
Residual current protective unit selects A type earth leakage protective device special circuit FM2147.AC type earth leakage protective device only shields to ac leakage, to DC pulse electric leakage akinesia, does not have protective effect; And A type earth leakage protective device also shields to DC pulse electric leakage except ac leakage being played to protection.Therefore, A type has more comprehensive and security than AC type to earth leakage protection.Human electric shock, consumer damage, electrical fire etc. that DC pulse electric leakage causes happen occasionally, and cause the casualties and property loss that originally should not occur, have caused the great attention of government department and people in the industry.Vigorously promote the use A type earth leakage protective device imperative.AC type (plain edition) uses commonplace, and North America, Western European countries' refusal use AC type earth leakage protective device.
The electricity consumption data in autostore line attachment January wanted by this electric energy air-break, must have clock.When air-break powers on, clock obtains from external unit by RS485 interface.After long-play, air-break system clock and true time offset excessive, every certain cycle, when air-break wants external unit to carry out once school by RS485 interface.
The storage unit of air-break, can according to store data number, select the storage chip of different capabilities; Cryptographic algorithm when data storage and correspondence with foreign country also according to mcu resource and the requirement to encryption performance, can adopt different cryptographic algorithm.The selection of computation chip also has very large dirigibility, the producer producing electric energy computation chip is a lot, computation chip kind and model are also very abundant, can, according to different needs, select the higher single-phase electric energy computation chip of sexual valence to replace the computation chip used in the utility model.The RS485 interface chip of air-break can according to the core of performance, cost needs selection different vendor.
Air-break in the utility model, first can the relevant power information of high-precision metering line attachment, comprises the voltage of line attachment, electric current, power, power factor, electricity etc.; Utilizing clock signal can also the power information in autostore line attachment nearest January, be a scale with 1 minute, accurate measurement the average power recorded in this 1 minute and average electricity consumption electricity.Simultaneously according to clock signal, can also abnormal state information in nearest one month of autostore institute line attachment, namely record institute's line attachment and occur the time point of abnormality and the type of abnormality at every turn.
The filtering of the acquisition channel of this computation chip and anti-interference element use abundant, greatly strengthen the anti-interference of air-break and ensure that the precision of continuous data.
The MCU of air-break is first encrypted before storing electricity consumption data, so the data inside storage unit are all through encryption, even if the unexpected data being read storage chip by other people, when key, are also difficult to the True Data cracking the inside.The correspondence with foreign country of air-break all have employed cryptographic algorithm, ensure that the security of data communication, for needing the intelligent institute line attachment of electric energy metrical to be good selection to the higher intelligent institute's line attachment of security requirement.
Leakage protection circuit selects A type earth leakage protective device dedicated devices, and A type has more comprehensive and security than AC type to earth leakage protection.
This air-break, except having electricity protection function, also has power information collection, RS485 communication function, for home intelligent power provides complete terminal scheme, has broad mass market prospect.
In sum, content of the present utility model is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present utility model, but this embodiment is all included within scope of the present utility model.
Claims (2)
1. there is an air switch for function of measuring, it is characterized in that, comprising:
Power information collecting unit, for gathering the power information of current circuit and being sent to processor, described power information comprises voltage, electric current, power factor and the power consumption in preset time period;
Described processor, is connected to described power information collecting unit and storage unit, for the described power information received from described information acquisition unit is sent to described storage unit;
Described storage unit, for storing the power information received from described processor;
Residual current protective unit, for having the switch of the air switch of function of measuring described in disconnection when detecting that current circuit leaks electricity, described residual current protective unit is A type earth leakage protective device;
RS485 interface unit, is connected to described processor.
2. the air switch with function of measuring according to claim 1, is characterized in that, described processor is MSP430G2553 single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520469786.1U CN204789719U (en) | 2015-07-02 | 2015-07-02 | Air switch with measurement function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520469786.1U CN204789719U (en) | 2015-07-02 | 2015-07-02 | Air switch with measurement function |
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| Publication Number | Publication Date |
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| CN204789719U true CN204789719U (en) | 2015-11-18 |
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| CN201520469786.1U Active CN204789719U (en) | 2015-07-02 | 2015-07-02 | Air switch with measurement function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410746A (en) * | 2016-05-31 | 2017-02-15 | 深圳巴斯巴科技发展有限公司 | A-type electric leakage circuit protector suitable for new energy automobile charging box |
-
2015
- 2015-07-02 CN CN201520469786.1U patent/CN204789719U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410746A (en) * | 2016-05-31 | 2017-02-15 | 深圳巴斯巴科技发展有限公司 | A-type electric leakage circuit protector suitable for new energy automobile charging box |
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| GR01 | Patent grant |