CN104714077B - Current failure detects table data storage method and residual current fault detection gauge - Google Patents
Current failure detects table data storage method and residual current fault detection gauge Download PDFInfo
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Abstract
A kind of current failure detects table data storage method, by the high-speed sampling of microcontroller, obtains the real-time residual current value Ic in circuit, and maximum (Imxa) is cached by Ic compared with the reference value Ivef that residual current records.The present invention can provide foundation reliably for lookup of the management of power use department to residual current trouble point.A kind of residual current fault detection gauge, including：Crust of the device, described device enclosure is provided with power supply circuit system etc.；Detection components；Data handling component.The invention provides one kind can monitor, store, analyzes and transmit supply line's residual current fault message, be advantageous to quickly search residual current trouble point and the residual current trouble-monitoring instrument to carrying out intelligent management with electric line.Can be the segment analysis causes of accident such as electric power, fire-fighting, security control by said structure design, there is provided very valuable original information data, it is one of effective means for realizing electricity consumption scientific management.
Description
Technical field
The present invention relates to fault repair apparatus technical field, more specifically, more particularly to a kind of current failure inspection
Survey table data storage method and a kind of residual current fault detection gauge.
Background technology
Residual current fault detection gauge is the special equipment of monitoring, storage and analysis supply line residual current failure, it
Residual current trouble point is quickly searched for management of power use personnel, fix a breakdown provides conveniently in time with safe power supply；Many institute's weeks
Know, very big and electricity consumption situation the uncertainty of the environmental difference residing for supply line, it is remaining that this make it that supply line produces failure
The randomness of electric current is very big, and to ensure Electrical Safety, people generally install RCCB in supply line, to occur
Automatic disconnection electric line during electric leakage, to reach protection electrical equipment, the person and the safety of property.It is but of the prior art
Clamp on amperemeter, the value of current residual electric current can only be detected, it is impossible to realize the function of unattended and quick seizure residual current；
RCCB can only then monitor the residual current situation with record trunk road, and residual current failure, which occurs, to fast positioning lights
Less than effect；And other kinds of residual current detecting instrument table, then need to work by mains-supplied, and need the scene of being installed to
Use, convenience and flexibility can not meet to require.And necessary firsthand information can not be provided for analysis power supply trouble；Cause
How this, quickly search remaining residual current trouble point, improves the security and high efficiency of power network power supply, realizes the safety of power supply
Intelligent management, this has become one of problem of concern.
The content of the invention
In view of this, the invention provides a kind of current failure detection table data storage method and a kind of residual current
Fault detection gauge, to solve the above problems.
To achieve the above object, the present invention provides following technical scheme：
A kind of current failure detects table data storage method,
Step 1: by the high-speed sampling of microcontroller, the real-time residual current value Ic in circuit is obtained, and by Ic with remaining
The reference value Ivef of aftercurrent record is compared, current surplus by what is collected if the difference between the two, which is more than, allows trigger value Is
Aftercurrent value Ic and relevant information are cached as the maximum (Imxa) in this triggering period, then residual current is entered
Row gathers next time, if Ic is more than Imax and the change of residual current belongs to continuance lifting state, updates Imax's again
Relevant information, it is ensured that what be recorded in this triggering period is the maximum of residual current, until no longer carrying occurs in residual current
After rising, recalculated Imax next time as the reference value Ivef calculated；Residual current change belongs to continuous and declines shape
Also it is that similarly, such cycle index obtains the maximum in the different triggering periods during state；
Step 2: when still if permission trigger value Is occurs being no more than always in Ic and Ivef difference, no record will be produced
Situation, then it will be unable to obtain the situation of change of the residual current in monitoring period of time, therefore, it is necessary to the note overflowed with reference to interval time
Recording method, that is, there are both differences and be no more than the value for allowing triggering, and interlude has surpassed after last registration generation
Maximum allowable interval time has been spent, then the maximum in this period and relevant information have been subjected to deposit record, and by currency Ic
Ivef, and Imax are updated, carries out cycle calculations next time.
In low-voltage power supply system, the uncertainty of running environment of user power utilization equipment and low-pressure delivery electric line etc., supply
The randomness of residual current is very big in electric line, line fault particularly caused by the residual current of instantaneous variation, to using fulgurite
Lookup ability presence of the reason department to residual current trouble point is greatly difficult.
Present invention offer is a kind of to carry out the effective ways of monitoring and stored record in real time to residual circuit, using time interval
The real-time monitoring of monitoring mode progress being combined with changing value triggering and stored record, can be that management of power use department is electric to residue
The foundation of the lookup offer of trouble point reliably is provided.
Present invention also offers a kind of residual current fault detection gauge, including：
Crust of the device, described device enclosure is provided with power supply circuit system, the power supply circuit system includes electricity
Pond power supply circuit, dot lcd display circuit, clock circuit, memory circuitry, usb data communication circuit and with it is each
Individual independent circuit is connected to the battery of power supply；
Detection components, the detection components include split core type current transformer and current detector, the current detector
Detection probe is connected with, the split core type current transformer includes the probe claw of two symmetrical configurations, and two probe claws are rotatable
Ground is arranged on described device shell, and current transformer is provided with the probe claw；
Data handling component, the clock electricity that the data handling component includes microcontroller, is connected with the microprocessor
Road and the holder that data storage is connected to the microcontroller, the current transformer and current detector with
The microcontroller signal connection, the microcontroller are connected signal connection, the microcontroller, institute with each independent circuit
State clock circuit and the holder is connected with the cell electrical.
Preferably, present invention additionally comprises there is liquid crystal display, the liquid crystal display is embedded to be arranged at outside described device
On shell, the liquid crystal display is connected with the microcontroller signal, and the liquid crystal display is connected with the cell electrical.
Preferably, present invention additionally comprises have small signals amplification circuit, the current transformer and the current detector
It is connected by the small signals amplification circuit with the microcontroller signal.
Preferably, present invention additionally comprises the connection component having for being connected with external smart machine, the connection component bag
USB communication interface component is included, the USB communication interface component is connected with the microcontroller signal.
It is an object of the invention to provide one kind can monitor, store, analyzes and transmit supply line's residual current failure
Information, be advantageous to quickly search residual current trouble point and the residual current malfunction monitoring to carrying out intelligent management with electric line
Instrument.
The purpose of the present invention is realized using such technical scheme：It includes battery power supply circuit, weak signal
Amplifying circuit, super low-power consumption microcontroller, dot lcd display circuit, clock circuit, memory circuitry, usb data communication
Circuit.It is characterized in that split core type current transformer output end and the input of described small signals amplification circuit are connected, and with
Described dot matrix lcd circuit, clock circuit, memory circuitry and usb data communication circuit respectively with microcontroller
It is connected；
The present invention uses 800mAh dry cell power supply, by split core type current transformer output end and small signals amplification circuit
Input is connected, and is connected to microcontroller, by the size of microcontroller on-line continuous cycle detection residual current, and surpasses
Spend 600 hours the intelligent processing method such as is persistently monitored, stores, counting, showing to residual current information, is management of power use portion
Door is quick to search residual current trouble point, excludes the original information data that residual current failure provides exceptional values.Also be electric power,
The segment analysis cause of accident such as fire-fighting, security control, there is provided very valuable original information data, it is to realize electricity consumption section
Learn one of effective means of management.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the circuit block diagram of the present invention；
Fig. 2 is one of transformer and amplification treatment circuit schematic diagram of the present invention；
Fig. 3 is the two of transformer and amplification treatment circuit schematic diagram of the invention；
Fig. 4 is the voltage collection circuit schematic diagram of the present invention；
Fig. 5 is the power circuit principle figure of the present invention；
Fig. 6 is the memory circuitry schematic diagram of the present invention；
Fig. 7 is the real time clock circuit schematic diagram of the present invention；
Fig. 8 is the usb communication device circuit schematic diagram of the present invention；
Fig. 9 is the function selector circuit theory diagrams of the present invention；
Figure 10 is the key circuit schematic diagram of the present invention；
Figure 11 is the display circuit schematic diagram of the present invention；
Figure 12 is the cyclelog circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Reference picture 1：It includes the power circuit 4, amplification processor 2, voltage sampling circuit 3, cyclelog 12, liquid
Crystal display circuit 10, key circuit 9, real time clock circuit 6, memory circuitry 5 are connected with usb communication circuit 7, described to put
The input of big processor 2 is connected with the output end of transformer 1, the amplification processor 2, display 10, real time clock circuit
6th, memory 5 and usb communication device 7 are connected with cyclelog 12 respectively；The transformer 1 can be by the remaining electricity of failure
Sensor current signal caused by stream is transferred to amplification processor 2, and the amplified processor 2 of the signal is transfused to programme-control after amplifying
The signal that real time clock circuit 6 and amplification processor 2 input can be transferred to memory 5 and stored by device 12, cyclelog 12,
Described program controller 12 can extract required signal from memory 5, and signal can be delivered to by described program controller 12
Display 10, the display 10 can show that the electrical leakage and time signal of failure residual current, institute in the memory 5
The fault-current signal and time signal of deposit can be sent to usb communication device 7 through cyclelog 12, and the usb communication connects
Fault-current signal and time signal can be sent out by receiving apparatus 7, while can also receive extraneous incoming signal, and will be connect
The signal received is conveyed to cyclelog 12, and the input of described program controller 12 is also associated with functional select switch 8, institute
The output end for stating cyclelog 12 is connected with voltage collection circuit 3；Operating function selector 8 can be realized to be shown to signal
The function such as show, receive and send, record and count, the control program of described program controller 12 use known to C language establishment.
In Fig. 2,3, transformer and amplification treatment circuit 2 of the present invention include operational amplifier IC5A and IC5B and
Its peripheral cell, they are connected in known manner, and the operational amplifier IC5 uses MCP602 models, its output end with
IC1 pin 7 connects, and the transformer directly can be bought by market.
In Fig. 4, voltage acquisition of the present invention is depressured sample circuit using serial resistor partial pressure mode and is connected to
IC1。
In Figure 5, power circuit 4 of the present invention mainly has IC 4 and its peripheral cell with known side
Formula is formed by connecting, and the IC 4 uses commercially available TLV61224 power modules, and it can provide work to each circuit unit
Make power supply, connect with IC1 pin 5.
In figure 6, memory 5 of the present invention includes ic chip 2 and its peripheral cell is connected in known manner
Connecing, the model 24AA256I/SN integrated packages that ic chip 2 uses, the pin 5 of the ic chip 2 connects with IC1 pin 37,
Pin 6 connects with IC1 pin 38, and pin 7 connects with IC1 pin 43.
In the figure 7, real time clock circuit 6 of the present invention is by peripheral cell resistance, diode, electric capacity, battery structure
Into connecting with IC1 pin 44,45.
In fig. 8, usb communication device 7 of the present invention is with known by IC 3 and its peripheral cell
Mode is formed by connecting, and the communication module for the model P2303HX that the IC3 is used, its pin 1 connects with IC1 pin 41, its pin 5
Connect with IC1 pin 42.
In fig.9, function selector 8 of the present invention uses commercially available key-press module KEY-4.5, its pin 11 and IC1
Pin 24 connect, pin 12 connects with IC1 pin 25, and pin 13 connects with IC1 pin 26, and pin 14 connects with IC1 pin 27, pin 15 with
IC1 pin 28 connects, and pin 16 connects with IC1 pin 29, and pin 17 connects with IC1 pin 30, and pin 18 connects with IC8 pin 31.
In Fig. 10, key circuit of the present invention, by retrieving, setting, confirming that three buttons are formed, realize to equipment
Setting, inquiry and other operations of information.
In fig. 11, display 10 of the present invention is mainly by display module LCD and peripheral cell with known side
Formula connects and composes, and institute LCD selects the display module of commercially available JLX12864_1016 models, LCDIA pin 13,14 and LCDIB phases
Connect, LCDIA pin 1 connects with ICl pin 32, and pin 2 connects with IC1 pin 35, and pin 3 connects with IC1 pin 34, pin 4 and IC1's
Pin 33 connects, and pin 5 connects with IC1 pin 36.
In fig. 12, cyclelog 12 of the present invention is mainly formed by connecting by ic chip 1 and its peripheral cell,
The ic chip 1 uses the single-chip microcomputer of commercially available STM8L152C6T6 models, and its pin 7 connects with the output end of amplification processor 2,
Its pin 6 connects with voltage collection circuit 3, and its pin 5 connects with working power 4, and its pin 37,38,43 connects with memory 5, its pin
44th, 45 connect with clock circuit 6, and its pin 8,41,42 connects with usb communication device 7, its pin 24,25,26,27,28,29,30 and
31 connect with function selector 8, and its pin 1,2,3,4 connects with key circuit 9, its pin 16,32,33,34,35,36 and display
10 connect.
In use, transformer 1 is arranged in supply line, the transformer 1 will can receive former the present invention in supply line
Barrier residual current signal is transferred to amplification processor 2, and signal is then conveyed to cyclelog 12, journey by amplification processor 2
Sequence controller 12 can according to program run requirement signal is handled, so as to realize the display of signal, transmission, reception,
The functions such as record, statistics；Usb communication device 7 of the present invention can realize the reception and transmission of signal, and it can use wired
Mode transmits signal.What is particularly worth mentioning is that the present invention only needs the 2 battery can continuous firings more than 25 days of section 7, even
It is continuous to collect the residual current value occurred on the circuit in 25 days, it can be inquired about in the monitoring period and be sent out by Chinese liquid crystal inquiry screen
Raw 20 maximum residual current values and the temporal information of generation.Also can by supporting computer terminal residual current analysis software,
Draw curve and understand residual current situation of change in this time, so as to it is quick, accurately residual current failure situation
Control centre and line attendant are presented to, residual current failure provides effective foundation is excluded to administrative staff, is timely
Fix a breakdown, ensure that Electrical Safety provides advantage, cyclelog 12 of the invention can be by failure residual current information
The intelligent processing method for being stored, recorded, counted, showing and being sent also is electric power, fire-fighting is in accordance with segment analysises such as security controls
Cause of accident, there is provided very valuable original information data.
Described above, professional and technical personnel in the field are enable to realize or using the present invention.To a variety of of these embodiments
Modification will be apparent for those skilled in the art, and generic principles defined herein can not take off
In the case of from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention is not intended to be limited to herein
These shown embodiments, and it is to fit to the most wide scope consistent with principles disclosed herein and features of novelty.
Claims (1)
1. a kind of current failure detects table data storage method, it is characterised in that
Step 1: by the high-speed sampling of microcontroller, the real-time residual current value Ic in circuit is obtained, and Ic and residue is electric
The reference value Ivef of stream record is compared, if the difference between the two, which is more than, allows trigger value Is, by the current residual collected electricity
Flow valuve Ic and relevant information are cached as the maximum (Imxa) in this triggering period, then residual current is carried out down
Once gather, if Ic is more than Imax and the change of residual current belongs to continuance lifting state, update Imax correlation again
Information, it is ensured that what be recorded in this triggering period is the maximum of residual current, after no longer being lifted occurs in residual current,
Recalculated Imax next time as the reference value Ivef calculated；Residual current change belongs to when continuously declining state also
It is that similarly, such cycle index obtains the maximum in the different triggering periods；
Step 2: when still if permission trigger value Is occurs being no more than always in Ic and Ivef difference, the situation of no record will be produced,
It then will be unable to obtain the situation of change of the residual current in monitoring period of time, therefore, it is necessary to the record side overflowed with reference to interval time
Method, that is, there are both differences and be no more than the value for allowing triggering, and interlude has been over after last registration generation
Maximum allowable interval time, then the maximum in this period and relevant information are subjected to deposit record, and currency Ic is updated
Ivef, and Imax, carry out cycle calculations next time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510134358.8A CN104714077B (en) | 2015-03-26 | 2015-03-26 | Current failure detects table data storage method and residual current fault detection gauge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510134358.8A CN104714077B (en) | 2015-03-26 | 2015-03-26 | Current failure detects table data storage method and residual current fault detection gauge |
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| CN104714077A CN104714077A (en) | 2015-06-17 |
| CN104714077B true CN104714077B (en) | 2018-02-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018014750A1 (en) * | 2016-07-21 | 2018-01-25 | 中国恩菲工程技术有限公司 | Low-voltage power distribution system and multi-function instrument for the low-voltage power distribution system |
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| CN1309772A (en) * | 1998-06-30 | 2001-08-22 | 德耳塔电气有限公司 | Residual current detection device |
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| CN101404415A (en) * | 2007-08-15 | 2009-04-08 | 通用汽车环球科技运作公司 | Method for updating minimum and maximum energy storage values |
| CN102103160A (en) * | 2009-12-16 | 2011-06-22 | 中国建筑科学研究院 | Residual current monitoring alarm method, system and detection controller |
| CN103995561A (en) * | 2014-05-28 | 2014-08-20 | 华为技术有限公司 | Maximum power point tracing method and device |
| CN204694754U (en) * | 2015-03-26 | 2015-10-07 | 杭州阶梯科技有限公司 | Residual current fault detection gauge |
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2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309772A (en) * | 1998-06-30 | 2001-08-22 | 德耳塔电气有限公司 | Residual current detection device |
| CN2757246Y (en) * | 2004-11-15 | 2006-02-08 | 谢华跃 | Remaining current record monitor |
| CN101404415A (en) * | 2007-08-15 | 2009-04-08 | 通用汽车环球科技运作公司 | Method for updating minimum and maximum energy storage values |
| CN102103160A (en) * | 2009-12-16 | 2011-06-22 | 中国建筑科学研究院 | Residual current monitoring alarm method, system and detection controller |
| CN103995561A (en) * | 2014-05-28 | 2014-08-20 | 华为技术有限公司 | Maximum power point tracing method and device |
| CN204694754U (en) * | 2015-03-26 | 2015-10-07 | 杭州阶梯科技有限公司 | Residual current fault detection gauge |
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