CN204188714U - Distant place handheld terminal - Google Patents
Distant place handheld terminal Download PDFInfo
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- CN204188714U CN204188714U CN201420440791.5U CN201420440791U CN204188714U CN 204188714 U CN204188714 U CN 204188714U CN 201420440791 U CN201420440791 U CN 201420440791U CN 204188714 U CN204188714 U CN 204188714U
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Abstract
The utility model discloses a kind of distant place handheld terminal, and this terminal comprises: signal capture interface, and it is electrically connected line of electric force, gathers power line carrier signal; Signal processing module, its inlet circuit connection signal catches the output terminal of interface, and Received signal strength catches the power line carrier signal that interface exports, and exports recognition of phase line code information after carrying out signal receiving and decoding; Digital signal processing module, the output terminal of its inlet circuit connection signal processing module, receives the intensity of this signal of recognition of phase line code information record, and detects to different line of electric force the signal intensity drawn and compare, output power line recognition result.The utility model, by introducing power line carrier signal on line of electric force, is undertaken gathering and identifying by distant place handheld terminal, and by the difference of power line carrier signal, identify line of electric force, operating efficiency is high, improves the accuracy of identification simultaneously.
Description
Technical field
The utility model relates to a kind of line of electric force recognition technology of electric field, is specifically related to a kind of distant place handheld terminal.
Background technology
In low-voltage supply line, general pole line and the cable of adopting is powered from transformer platform area to resident and residential building.Connecing in house lead in operation in reality, due to urban architecture and urban planning cause, connects house lead in and mostly installs in batches, and the time period crossed over is longer.Thus cause the archives of user power utilization information and reservation chaotic, the user profile phenomenon that there is any discrepancy in the Electricity customers of transformer platform area actual load and Electric Power Marketing System.Thus the examination that greatly have impact on single district's line loss and accident maintenance power failure operation.But due to pole line and underground cable mostly block by buildings, some cabling is in disorder, cannot determine to connect by observation the intersection of transformer platform area belonging to house lead in, particularly several districts, there is crossover phenomenon.Inconvenience is brought to power supply enterprise's marketing and electric power accident rush-repairing, for this reason, management of power use department often needs the subscriber data generally investigating all kinds of districts, which platform transformer-supplied comprises user is by, which by busbar branches powered, powered mutually by which, realize the fine-grained management of platform district, for consumption reduction impairment provides basic data really and accurately.
At present, for solving test problems, have employed station user identification apparatus, platform district user inquiring instrument, business generaI investigation instrument etc.Platform district identifies, lines branch identification adopts the method for traditional " electrical verification of operating a switch " to determine that the transformer platform area of user and phase line attribute exist a lot of drawback, and traditional station user identification apparatus adopts power line carrier, PLC mode and frequency communication mode.But these traditional two kinds of modes have the defect of himself, cannot accurately identification district user by which busbar branches be powered or where power mutually.The following problem of major embodiment or shortcoming:
1) erroneous judgement can be caused under common high pressure, altogether and altogether cable duct situation.Because conventional table district identifier only adopts power carrier signal to carry out user's identification, and carrier signal can be transferred to high-pressure side by transformer, then is transferred to adjacent transformers by hi-line, causes " getting lines crossed " phenomenon both " high pressure is being got lines crossed altogether ".Same reason, if adjacent transformers has common ground situation, carrier signal also can got lines crossed to adjacent transformers and both " got lines crossed altogether ".If the low-voltage cable of adjacent transformers walks same cable ditch, power carrier signal can be propagated into by the coupling capacitance between cable on other transformer, both " cable duct is being got lines crossed altogether ".Due to common high pressure get lines crossed, get lines crossed altogether, altogether cable duct the existence of situation such as to get lines crossed, only adopt the conventional table district identifier of power carrier signal often can cause erroneous judgement.
2) for distance, disturb large circuit None-identified.The radius of electricity supply in electric power Gong Biantai district, city is between 500 meters to 2000 meters, so platform district identifier measuring distance should be not less than 2000 meters.Power carrier signal is high-frequency signal, and decay is serious, cannot long-distance transmissions, makes conventional table district identifier None-identified distance, user that line-hit is large.
To sum up, single carrier wave embodiment or frequency communication mode cannot ensure accurate identification.
Utility model content
The utility model provides a kind of distant place handheld terminal, can lock obstructed frequency and parse carrier communication data, parsing the transformer station belonging to current phase line and phase line, conveniently tests out the supply transformer platform district corresponding to power consumer.
For achieving the above object, the utility model provides a kind of distant place handheld terminal, is characterized in, this terminal comprises:
Signal capture interface, it is electrically connected line of electric force, gathers power line carrier signal;
Signal processing module, its inlet circuit connection signal catches the output terminal of interface, and Received signal strength catches the power line carrier signal that interface exports, and exports recognition of phase line code information after carrying out signal receiving and decoding;
Digital signal processing module, the output terminal of its inlet circuit connection signal processing module, receives the intensity of this signal of recognition of phase line code information record, and detects to different line of electric force the signal intensity drawn and compare, output power line recognition result.
Above-mentioned distant place handheld terminal also includes power management module, its respectively circuit connect described signal processing module and digital signal processing module, and signal processing module and digital signal processing module to be powered.
Above-mentioned signal processing module comprises:
Once accept filter module, and its inlet circuit connection signal catches interface output terminal;
Signal frequency follows module, and its inlet circuit connects the output terminal of the module that once accepts filter;
High-order digit filtration module, its inlet circuit connection signal frequency following module output terminal;
Frequency locking lockin signal detection module, it is connected with the defeated two-phase of described high-order digit filtration module;
Data Analysis and decoder module, its inlet circuit connects the output terminal of frequency locking lockin signal detection module; Circuit of output terminal connects digital signal processing module.
Above-mentioned distant place handheld terminal also comprises coupling mechanism, and its circuit connects described signal capture interface input end, catches power line carrier signal from line of electric force.
Above-mentioned coupling mechanism adopts capacitive couplings mode, is connected across phase line and ground wire two ends.
Distant place handheld terminal gathers the power line carrier signal in each bar line of electric force respectively and carries out information number process; The intensity of the power line carrier signal of each bar line of electric force collection compared, the difference according to intensity identifies line of electric force.
The utility model distant place handheld terminal and line of electric force recognition methods thereof are compared with the line of electric force recognition technology of prior art, its advantage is, the utility model by introducing power line carrier signal on line of electric force, undertaken gathering and identifying by a distant place of the present utility model handheld terminal respectively, by the difference of power line carrier signal, the line of electric force realized being difficult under cluttered environment differentiate identifies easily, compared by eye recognition with prior art, operating efficiency is high, improves the accuracy of identification simultaneously.
Accompanying drawing explanation
Fig. 1 is the system construction drawing of the utility model distant place handheld terminal.
Embodiment
Below in conjunction with accompanying drawing, further illustrate specific embodiment of the utility model.
The utility model discloses a kind of distant place handheld terminal for identifying line of electric force and phase place, distant place handheld terminal disposes the terminal device with phase line test point, need the carrier signal sent according to station institute identifier to tell platform district that current test point belongs to and phase line, and report accurately to operating personnel.
As shown in Figure 1, this distant place handheld terminal comprises: signal capture interface 1, inlet circuit connection signal catches the signal processing module 2 of interface 1 output terminal, the digital signal processing module 3 of inlet circuit connection signal processing module output terminal, and the power management module 4 of difference circuit connection signal processing module 2 and digital signal processing module 3.
Signal capture interface 1 is electrically connected line of electric force, gathers power line carrier signal, exports power management module 2 to.Preferably, signal capture interface 1 inlet circuit is connected with coupling mechanism, is gathered the power line carrier signal of line of electric force by coupling mechanism, and coupling mechanism adopts capacitive couplings mode, is connected across phase line and ground wire two ends.
Signal processing module 2 Received signal strength catches the power line carrier signal that interface exports, and exports recognition of phase line code information after carrying out signal receiving and decoding.
Signal processing module 2 comprises: inlet circuit connection signal catches the module 21 that once accepts filter of interface 1 output terminal, the signal frequency that inlet circuit connects the module output terminal that once accepts filter follows module 22, the high-order digit filtration module 23 of inlet circuit connection signal frequency following module output terminal, frequency locking lockin signal detection module 24 is bi-directionally connected with high-order digit filtration module, inlet circuit connects Data Analysis and the decoder module 25 of frequency locking lockin signal detection module output terminal, Data Analysis is connected digital signal processing module 3 with the circuit of output terminal of decoder module 25.In the present embodiment, signal processing module 2 adopts integrated circuit to realize.
Digital signal processing module 3 receives the intensity of this signal of recognition of phase line code information record, and the signal intensity drawn is detected to different line of electric force compare, by data output interface output power line recognition result, or by run-time error instruction interface output error instruction.In the present embodiment, digital signal processing module 3 adopts integrated circuit to realize.
Power management module 4 is for powering to signal processing module and digital signal processing module.
The step of the line of electric force recognition methods of a kind of distant place handheld terminal is as follows:
Step 1, inject power line carrier signal by external platform district discriminatory carrier sender unit to each bar line of electric force, between the time of different line of electric force being injected to power line carrier signal, be provided with an interval time.
The power line carrier signal that step 2, signal capture interface are gathered in line of electric force by coupling transfers to signal processing module.
Step 3, signal processing module obtain recognition of phase line code information after carrying out signal receiving and decoding to power line carrier signal and export.Signal processing module carries out filtering, frequency locking, phase-locked, digital filtering, decoding, demodulation process successively to power line carrier signal.
Step 4, digital signal processing module receive the recognition of phase line code information of line of electric force, record the intensity of this recognition of phase line code information.
Step 5, repetition above-mentioned steps 2 to 4, detect each bar line of electric force respectively, the intensity of each recognition of phase line code information is compared by digital signal processing module, judges the phase place belonging to each tested line of electric force according to intensity.
Although content of the present utility model has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple amendment of the present utility model and substitute will be all apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (5)
1. a distant place handheld terminal, is characterized in that, this terminal comprises:
Signal capture interface, it is electrically connected line of electric force, gathers power line carrier signal;
Signal processing module, its inlet circuit connects the output terminal of described signal capture interface, and Received signal strength catches the power line carrier signal that interface exports, and exports recognition of phase line code information after carrying out signal receiving and decoding;
Digital signal processing module, its inlet circuit connects the output terminal of described signal processing module, receives the intensity of this signal of recognition of phase line code information record, and detects to different line of electric force the signal intensity drawn and compare, output power line recognition result.
2. a distant place as claimed in claim 1 handheld terminal, it is characterized in that, this terminal also includes power management module, its respectively circuit connect described signal processing module and digital signal processing module, and signal processing module and digital signal processing module to be powered.
3. a distant place as claimed in claim 1 handheld terminal, it is characterized in that, described signal processing module comprises:
Once accept filter module, and its inlet circuit connects described signal capture interface output terminal;
Signal frequency follows module, the output terminal of the module that once accepts filter described in its inlet circuit connects;
High-order digit filtration module, its inlet circuit connects described signal frequency and follows module output terminal;
Frequency locking lockin signal detection module, it is connected with the defeated two-phase of described high-order digit filtration module;
Data Analysis and decoder module, its inlet circuit connects the output terminal of described frequency locking lockin signal detection module; Circuit of output terminal connects digital signal processing module.
4. a distant place as claimed in claim 1 handheld terminal, it is characterized in that, this terminal also comprises coupling mechanism, and its circuit connects described signal capture interface input end, catches power line carrier signal from line of electric force.
5. a distant place as claimed in claim 4 handheld terminal, is characterized in that, described coupling mechanism adopts capacitive couplings mode, is connected across phase line and ground wire two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420440791.5U CN204188714U (en) | 2014-08-06 | 2014-08-06 | Distant place handheld terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420440791.5U CN204188714U (en) | 2014-08-06 | 2014-08-06 | Distant place handheld terminal |
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| Publication Number | Publication Date |
|---|---|
| CN204188714U true CN204188714U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420440791.5U Active CN204188714U (en) | 2014-08-06 | 2014-08-06 | Distant place handheld terminal |
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| CN (1) | CN204188714U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251946A (en) * | 2014-08-06 | 2014-12-31 | 国网上海市电力公司 | Remote hand-held terminal and power line identification method thereof |
| CN107390050A (en) * | 2017-06-28 | 2017-11-24 | 北京电子科技学院 | Power line carrier signal detects warning system and method |
-
2014
- 2014-08-06 CN CN201420440791.5U patent/CN204188714U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251946A (en) * | 2014-08-06 | 2014-12-31 | 国网上海市电力公司 | Remote hand-held terminal and power line identification method thereof |
| CN104251946B (en) * | 2014-08-06 | 2018-01-30 | 国网上海市电力公司 | Distant place handheld terminal and its power line recognition methods |
| CN107390050A (en) * | 2017-06-28 | 2017-11-24 | 北京电子科技学院 | Power line carrier signal detects warning system and method |
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