CN107247212A - Ammeter based on TDR is visited one house after another detection means - Google Patents
Ammeter based on TDR is visited one house after another detection means Download PDFInfo
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- CN107247212A CN107247212A CN201710502776.7A CN201710502776A CN107247212A CN 107247212 A CN107247212 A CN 107247212A CN 201710502776 A CN201710502776 A CN 201710502776A CN 107247212 A CN107247212 A CN 107247212A
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- tdr
- ammeter
- house
- pulse signals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits
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- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a kind of detection means that TDR abilities are provided in ammeter detection of visiting one house after another, for detecting whether ammeter information is correctly corresponding with user profile.The device can carry out data acquisition to the connection of user and ammeter and investigate.The device includes suction ripple module, three parts of TDR modules and data processing module.Inhale ripple module and be arranged on and enter table end between power network and ammeter, it is ensured that the one-way transmission of TDR pulse signals, prevent TDR pulse signals from flowing to power network end.TDR modules are mainly used to produce TDR pulse signals, and TDR pulse signals injection ammeter is registered one's residence end.Data processing module is mainly used in gathering and handles TDR pulse-echo signals.The present invention need not register one's residence compared to existing ammeter detection method of visiting one house after another, and reduce ammeter and visit one house after another the workload of testing staff, improve ammeter and visit one house after another the operating efficiency of detection.
Description
Technical field
The invention belongs to detection technique field, and the dress for detection of visiting one house after another more specifically to the ammeter based on TDR
Put.
Background technology
In the ammeter fixing link of current electric service, due to lacking effective supervision in work progress, it result in more
Frequently ammeter is visited one house after another problem.In order that electricity metering service is more accurate, " ammeter visit one house after another problem " needs to be resolved.Electric power
Line be embedded in buildings cause ammeter visit one house after another detection be difficult implementation.Traditional outage detection investigation method is brought to the life of resident
Great inconvenience, causes bad influence to Consumer's Experience and power supply quality.The inspection and ammeter subsequently occurred is visited one house after another
Measurement equipment is still that based on detection of registering one's residence, can not be detected if resident family stays out, and such detection can still disturb the normal life of resident family
Living and inefficiency.Based on above-mentioned present situation, high efficiency, the ammeter for not powering off, not registering one's residence visit one house after another detection with very big attention rate
With demand degree.
Existing detection of not registering one's residence mainly is implemented by radio communication or power line communication scheme.It is easy using radio communication
Disturbed by extraneous factor；It is existing and power line communication is then that joint judgement is carried out by changing the physical parameter of supply line
Real environment is not Utopian circuit environment, while other resident families can be flowed into by power network by injecting the signal of power line, is judged
Confidence level is low, so as to influence the accuracy of testing result.Therefore strong antijamming capability is researched and developed, accuracy of detection is high, intelligence degree
High not household electric meter visit one house after another detection means for improve electric service quality be vital.
The content of the invention
For the weak point present in above-mentioned technology, the present invention proposes a kind of need not register one's residence, operating just based on TDR
The high ammeter of prompt, accuracy in detection is visited one house after another detection means.
The technical scheme is that：
The present invention includes inhaling ripple module, TDR modules and the part of data processing module three.Inhaling ripple module can prevent TDR pulses from believing
Number to electrical grid transmission, it is ensured that the one way propagation of TDR pulse signals；TDR modules can obtain ammeter by communication interface circuit
User profile and feed back to data processing module, while producing TDR pulse signals and coupled by TDR wave generator circuits
TDR pulse signals are injected into ammeter and registered one's residence end by circuit；Data processing module can analyze the TDR pulse-echos letter of every ammeter
Number and classification and Detection is carried out to obtained detection data, and show final testing result.
Compared with prior art, useful achievement of the invention is：Reduce ammeter to visit one house after another the workload of testing staff, improve
Ammeter is visited one house after another the operating efficiency of detection.
Brief description of the drawings
In order to more clearly describe the embodiment of the present invention, the required accompanying drawing used in description the present embodiment will be made below
Briefly introduce, it should be apparent that, drawings described below is only embodiments of the invention.For those of ordinary skill in the art
For, on the premise of not paying creative work, other accompanying drawings can be obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 is that the ammeter based on TDR is visited one house after another detection means system block diagram；
Fig. 2 is TDR module principle block diagrams；
Fig. 3 is suction ripple module and ammeter line graph；
Fig. 4 is data processing module theory diagram.
Embodiment
In order that technical scheme, purpose and advantage are more than you know, with reference to accompanying drawing of the embodiment of the present invention, to this
Technical scheme in inventive embodiments is further elaborated.It is readily apparent that described embodiment is of the invention real
One kind in example is applied, is not whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not paying
The every other embodiment obtained on the premise of going out creative work, belongs to the category that the present invention is protected.
TDR pulse signal operation principles are：TDR pulse signals can all occur in the place of any impedance discontinuity of power line
Reflection.The line footpath of power line changes, and the inconsistency of the physical factor such as change of insulating layer material and thickness can all cause electricity
Impedance discontinuity in the line of force, so as to produce the reflection of TDR pulse signals, and the reflection letter in the case of different impedance discontinuity
It is number also different.
According to ammeter to the connection between resident family's electrical appliance, the more serious point of impedance discontinuity has following：
1）Power line is connected to the master switch of resident family from ammeter（Air switch etc.）When, because the position is not to be seamlessly connected, always
The physical factors such as the material and shape of switch cause it impedance and power line resistance difference it is larger, therefore power line opens always
It is impedance discontinuity at pass；
2）When power line enters the branch power line of each electrical appliance of resident family from resident family's master switch, each branch is connected to some
Electrical appliance, therefore can be equivalent to certain input impedance from branch node toward these electrical appliances as viewed from the direction of electrical appliance
Load.And these equivalent loads are that circuit in parallel is connected with the total electricity line into each electrical appliance of resident family at resident family's master switch
Relation, therefore be also impedance discontinuity in the junction of each branch power line and total electricity line.Enter resident family so working as
Power line reach master switch punish into multichannel lead to each electrical appliance branch power lines when, deposited herein on the node more than one point
In larger impedance discontinuity point, the point can cause strong reflection to TDR pulse signals.
The reflection that different loads is caused is different：Different frequency composition in the amplitude of back wave, phase, back wave
Amplitude decay and phase place change etc..The TDR impulse waveforms being reflected back are analyzed by data processing module, TDR can be drawn
Pulse signal produces the time point of reflection at resident family's master switch.
It is readily apparent that TDR pulse signals transmit on power line and arrive at needs at the master switch of high-storey resident family
By the longer time, there is also the difference of power line length for the resident family of same floor.Therefore can be according to TDR arteries and veins
Time that signal reflects is rushed to judge that current institute's survey ammeter connects the relative altitude of floor.
As shown in figure 1, the present embodiment is made up of TDR modules, suction ripple module, data processing module.The TDR pulse signals
Produced through TDR modules and be connected to ammeter through overcoupled circuits and register one's residence end (terminal A, B), and its communication interface circuit communicates with ammeter
Interface is connected；The suction ripple module is connected (terminal C, D) with ammeter power network end；The data processing module passes through communication interface electricity
Road receives TDR pulse-echo signals, then completes the judgement of reflection interval point；Data processing module is all tested by what is detected
The reflection interval point of TDR pulse signals under ammeter is combined with the ammeter information obtained in all tested ammeter communication interfaces
Judgement can complete the detection of visiting one house after another of ammeter.It need not be powered off in access TDR modules and during inhaling ripple module.
As shown in Fig. 2 described TDR modules include TDR signal generating circuits, communication interface circuit, termination power.The mould
Block obtains the relevant information of ammeter, then the communication interface electricity by being connected with data processing module by communication interface circuit first
The relevant information of ammeter is sent to data processing module by road, then leads to the TDR impulse waveforms that TDR signal generating circuits are produced
Overcoupled circuits injection ammeter is registered one's residence end.When TDR impulse waveforms are reflected back TDR modules, TDR modules pass through communication interface circuit
TDR pulse-echo signals are transferred to data processing module.
It is connected as shown in figure 3, inhaling ripple module with the power network end (terminal C, D) of ammeter, the module is equivalent to low pass filter,
Main function is that the electromagnetic energy of high-frequency signal is converted into heat energy and consumed, so that reaching prevents TDR pulse signals toward electricity
Net the effect of end transmission, it is ensured that the one-way transmission of TDR pulse signals.
As shown in figure 4, data processing module mainly include waveform scanning circuit, communication interface circuit, data analysis circuit,
Data storage circuitry, detection status display circuit.The ammeter information that communication interface circuit first collects TDR modules transmit to
Data storage circuitry, then when TDR pulse-echos signal reaches data processing module by TDR modules, then TDR pulses is anti-
Signal is penetrated to transmit to waveform scanning circuit, so that detect that TDR pulse signals produce the time point of reflection at resident family's master switch,
And detect data storage to data storage circuitry as one with ammeter information before the time point.When having gathered all institutes
After the ammeter detection data that need to be detected, data analysis circuit can then carry out the comparison at time point to these detection data, so that
Go out the situation of visiting one house after another of surveyed ammeter group, and by testing result by detecting that status display circuit is included on liquid crystal display.
Finally it is illustrated, above example is only used for description and realizes technical scheme, rather than to this
The limitation of invention.Although the present invention is described in detail with reference to above-described embodiment, those of ordinary skill in the art should
Understand；The modification or technical characteristic progress that its technical scheme that can be still illustrated above-described embodiment carries out part are equivalent
Replace；And these modifications and replacement do not make the essence of appropriate technical solution depart from the essence of technical scheme described in the embodiment of the present invention
God and category.
Claims (4)
- The detection means 1. ammeter based on TDR is visited one house after another, it is characterised in that including：Suction ripple module for ensureing TDR pulse signal one-way transmissions；TDR modules for producing TDR pulse signals；AndData processing module for gathering and handling TDR pulse-echo signals.
- The detection means 2. ammeter according to claim 1 based on TDR is visited one house after another, it is characterised in that：The suction ripple module peace Enter table end loaded on power network, prevent TDR pulse signals from being transmitted to power network end and entering other resident families, it is ensured that the list of TDR pulse signals To propagation.
- The detection means 3. ammeter according to claim 1 based on TDR is visited one house after another, it is characterised in that：Described TDR module bags Signal generating circuit containing TDR, communication interface circuit, termination power；TDR signal generating circuits produce TDR pulse signals；By logical Letter interface circuit realizes TDR modules and the communication of ammeter and data processing module；TDR modules will pass through TDR signal generating circuits The coupled circuit of TDR pulse signals of generation be injected into ammeter register one's residence end power line on be transmitted.
- The detection means 4. ammeter according to claim 1 based on TDR is visited one house after another, it is characterised in that：Described data processing Module includes waveform scanning circuit, communication interface circuit, data storage circuitry, data analysis circuit, detection status display circuit；Described waveform scanning circuit is used to analyze TDR pulse-echo signals；The communication interface circuit is used to be communicated with TDR modules；The data storage circuitry is used to record the ammeter information detected every time and waveform analysis result；The data analysis circuit is used to be compared classification to detection data；The detection status display circuit realizes the output of the testing result of acoustooptic form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710502776.7A CN107247212A (en) | 2017-06-27 | 2017-06-27 | Ammeter based on TDR is visited one house after another detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710502776.7A CN107247212A (en) | 2017-06-27 | 2017-06-27 | Ammeter based on TDR is visited one house after another detection means |
Publications (1)
| Publication Number | Publication Date |
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| CN107247212A true CN107247212A (en) | 2017-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710502776.7A Pending CN107247212A (en) | 2017-06-27 | 2017-06-27 | Ammeter based on TDR is visited one house after another detection means |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618346A (en) * | 2019-08-13 | 2019-12-27 | 深圳供电局有限公司 | Household meter identification method and household meter identification device |
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| CN101145980A (en) * | 2006-09-12 | 2008-03-19 | 华为技术有限公司 | A device and method for detecting bridge status of user line |
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| CN102326089A (en) * | 2009-02-19 | 2012-01-18 | Abb研究有限公司 | Be used to test the method and the electric power distribution system analyser device of electric power distribution system |
| CN102694893A (en) * | 2011-03-15 | 2012-09-26 | 弗兰克公司 | Phone test set tdr |
| CN102707200A (en) * | 2011-03-25 | 2012-10-03 | 托马斯及贝茨国际股份有限公司 | Testing and monitoring an electrical system |
| CN106019051A (en) * | 2016-06-16 | 2016-10-12 | 青岛鼎信通讯股份有限公司 | Electric energy meter test apparatus capable of avoiding door-to-door inspection and inter-user wrongly electricity metering |
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2017
- 2017-06-27 CN CN201710502776.7A patent/CN107247212A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145980A (en) * | 2006-09-12 | 2008-03-19 | 华为技术有限公司 | A device and method for detecting bridge status of user line |
| CN101483698A (en) * | 2008-01-07 | 2009-07-15 | 北卡罗来纳科姆斯科普公司 | Methods, systems and computer program products for using time domain reflectometry signatures to monitor network communication lines |
| CN102326089A (en) * | 2009-02-19 | 2012-01-18 | Abb研究有限公司 | Be used to test the method and the electric power distribution system analyser device of electric power distribution system |
| CN102694893A (en) * | 2011-03-15 | 2012-09-26 | 弗兰克公司 | Phone test set tdr |
| CN102707200A (en) * | 2011-03-25 | 2012-10-03 | 托马斯及贝茨国际股份有限公司 | Testing and monitoring an electrical system |
| CN106019051A (en) * | 2016-06-16 | 2016-10-12 | 青岛鼎信通讯股份有限公司 | Electric energy meter test apparatus capable of avoiding door-to-door inspection and inter-user wrongly electricity metering |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618346A (en) * | 2019-08-13 | 2019-12-27 | 深圳供电局有限公司 | Household meter identification method and household meter identification device |
| CN110618346B (en) * | 2019-08-13 | 2023-03-03 | 深圳供电局有限公司 | Household meter identification method and household meter identification device |
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Application publication date: 20171013 |