CN204855828U - Survey device is sought in cable route - Google Patents
Survey device is sought in cable route Download PDFInfo
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- CN204855828U CN204855828U CN201520590124.XU CN201520590124U CN204855828U CN 204855828 U CN204855828 U CN 204855828U CN 201520590124 U CN201520590124 U CN 201520590124U CN 204855828 U CN204855828 U CN 204855828U
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Abstract
The utility model discloses a survey device is sought in cable route for the detection equipment of the the direction of current flow method of survey is sought in research cable route, seek and survey the device including input isolation module (1), signal processing module (2), phase modulation module (3), power amplification module (6), power module (7) and central processing module (5), the input is kept apart module (1) and is connected with phase modulation module (3) through signal processing module (2), phase modulation module (3) are connected with signal generating module (4), signal generating module (4) are connected through phase modulation module (3) and central processing module (5) electricity. The utility model discloses the route of finding out the target cable of having solved effectively not only that traditional route detection instrument can't be accurate, effectively having solved traditional route moreover, to seek survey method signal parameter single, and sensitive inadequately, the interference killing feature is poor, the problem of the route detection work of incompatibility down -hole troublesome condition.
Description
Technical field
The utility model relates to electric power testing underground cable path and seeks measurement equipment technical field, is specifically related to a kind of cable trace and seeks survey device.
Background technology
Cable trace seeks survey, searches very important for the cable fault that data is incomplete.Path is unclear affects the pinpoint result of fault greatly.In order to investment reduction, there are more many cable laying systems in a lot of place now, cable laying situation is diversified, cable fault is diversified makes the signal parameter that survey method-frequency induction sound peak method is sought in traditional path, trough method is measured single, sensitive not, poor anti jamming capability, has been not suitable with the path detection work of complex situations.
Following problem is there is during legacy paths instrument exploration cable:
1, low-voltage cable is relative to 10kV and above high-tension cable wiring complexity, the wire in loop is not formed between the low-voltage cable not with armouring and the earth, the coupled signal of path instrument can not well be coupled in target cable, and therefore traditional path instrument can not detect the low-voltage cable not having armouring in the energized state;
2, all in same community low-voltage cable zero lines altogether, branch is numerous and contact is staggered complicated, therefore, when the charged path detection instrument of traditional low-voltage cable adopts coupling pincers to apply acquisition of signal low-voltage electric cable, detectable signal can be coupling in inside the zero line grounding loop of all cables, path instrument receiver can receive a lot of roads similar intensity signal, and the loop that coupled signal is the strongest is not the loop of target cable, cause the path accurately cannot finding out target cable during path detection;
The path instrument of current main flow live electric cable detection adopt coupling pincers transmit in target cable, therefore, when charged detection low-voltage cable path not can accurately surveying tape electricity low-voltage cable path.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of cable trace and seeks survey device, noise remote supervision system, the utility model not only efficiently solves the path that legacy paths detection instrument cannot find out target cable accurately, and efficiently solving traditional path, to seek survey method signal parameter single, sensitive not, poor anti jamming capability, is not suitable with the problem of the path detection work of complex situations.
The utility model is achieved through the following technical solutions:
A kind of cable trace seeks survey device, the detecting devices of the direction of current method of survey is sought for studying cable trace, it is characterized in that: described in seek survey device comprise input isolation module (1), signal processing module (2), phase modulation module (3), power amplifier module (6), power module (7) and central processing module (5), input isolation module (1) is connected with phase modulation module (3) by signal processing module (2), phase modulation module (3) is connected with signal generating module (4), signal generating module (4) is electrically connected with central processing module (5) by phase modulation module (3), described input isolation module (1) to input signal pre-service, and isolates pre-amplification, to isolation, pre-amplified signal carries out filtering to described signal processing module (2), signal zero crossing is synchronous, described phase modulation module (3), modulates binary phase modulated signal and input signal, , there is binary phase modulated signal in described signal generating module (4), described central processing module (5), control signal gain, signal synchronous modulation, power amplification gain, system protection control, described power amplifier module (6), carries out hybrid modulation to signal and signal amplifies, described power module (7) provides working power for each module of device.
The utility model is achieved through the following technical solutions:
Described power amplifier module (6) is connected with low-voltage cable by voltage isolation coupling module (9), by signal coupling module (10) and the clipper joint that is coupled, described voltage isolation coupling module (9) transmits to connection low-voltage cable live wire, isolation circuit AC power; Described signal coupling module (10) is by exporting signal with the clipper joint that is coupled, and the induced signal that coupling pincers produce is to running cable.
The further Technological improvement plan of the utility model is:
Described central processing module (5) is connected with protection circuit (8), described protection circuit, provides protection to the signal overcurrent of central processing module (5), internal protection, high voltage.
The utility model compared with prior art, has following obvious advantage:
The utility model path is sought and is surveyed device employing direction of current method, only need 2% signal amplitude, judged by phase place, less demanding to amplitude, after coordinating the suitable mode of connection, just there is very strong antijamming capability, direction of current method is by adding new measurement parameter-sense of current, antijamming capability is greatly improved, and use more convenient, precision is higher.
Accompanying drawing explanation
Fig. 1 is systematic schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model seeks the detecting devices of the direction of current method of survey for studying cable trace, described survey device of seeking comprises input isolation module 1, signal processing module 2, phase modulation module 3, power amplifier module 6, power module 7 and central processing module 5, input isolation module 1 is connected with phase modulation module 3 by signal processing module 2, phase modulation module 3 is connected with signal generating module 4, and signal generating module 4 is electrically connected with central processing module 5 by phase modulation module 3; The 1 pair of input signal pre-service of described input isolation module, and isolate pre-amplification; To isolation, pre-amplified signal carries out filtering to described signal processing module 2, signal zero crossing is synchronous; Described phase modulation module 3, modulates binary phase modulated signal and input signal; , there is binary phase modulated signal in described signal generating module 4; Described central processing module 5, control signal gain, signal synchronous modulation, power amplification gain, system protection control; Described power amplifier module 6, carries out hybrid modulation to signal and signal amplifies; Described power module 7 provides working power for each module of device.
Described power amplifier module 6 is connected with low-voltage cable by voltage isolation coupling module 9, and by signal coupling module 10 and the clipper joint that is coupled, described voltage isolation coupling module 9 transmits to connection low-voltage cable live wire, isolation circuit AC power; Described signal coupling module 10 is by exporting signal with the clipper joint that is coupled, and the induced signal that coupling pincers produce is to running cable.
Described central processing module 5 is connected with protection circuit 8, described protection circuit, provides protection to the signal overcurrent of central processing module 5, internal protection, high voltage.
The course of work of the present utility model is sketched by accompanying drawing 1:
External path instrument input audible sine ripple signal, carry out signal through input isolation module 1 to adjust, carry out signal noise filtering through signal processing module 2 again to obtain standard sine wave and output to phase modulation module 3, input CPU module 1 simultaneously and judge sinusoidal wave zero crossing, obtain synchronizing pulse, synchronizing pulse outputs to phase modulation module 3 as synchro control; Signal generating module 4 produces binary phase modulated signal, output to phase modulation module 3 simultaneously, sine wave signal and binary phase modulated signal carry out hybrid modulation under the control of synchronizing pulse, binary modulated signal starts modulation in sine wave signal zero passage starting point, obtain hybrid coding signal, hybrid coding signal outputs to the level that is externally coupled after power amplifier module 6; Output function can be switched as required in voltage isolation coupling module 9 and signal coupling module 10; Voltage isolation coupling module 9 is applied in the direct charged couple of low-pressure system live wire, hybrid coding signal transmits in far-end transformer grounding loop at live wire, signal coupling module 10 exports butt coupling pincers, by electromagnetic wave induction to tested armature of cable or be in shielding layer grounding loop, output hybrid coding signal; Use receiver above tested cable or use stethoscope to be attached to cable skin, can sine wave signal be demodulated, calculate the intensity of Received signal strength; Binary coded signal after demodulation compares according to carrying out the mistiming with the time delay of the coded signal sent, and calculates the phase differential of acceptance point and launching site signal.If target cable, phase differential is minimum, non-targeted cable, phase differential difference about 180 degree.Target cable sine wave signal is the strongest simultaneously.Phase differential is utilized to be converted to the direction of signal.Forward be target cable, reverse is non-targeted cable.Carry out accurate cable trace and charged identification judgement.
Technological means disclosed in the utility model scheme is not limited only to the technological means disclosed in above-mentioned embodiment, also comprises the technical scheme be made up of above technical characteristic combination in any.It should be pointed out that for those skilled in the art, correlation module involved by the utility model and circuit are all realized by prior art.
Claims (3)
1. a cable trace seeks survey device, the detecting devices of the direction of current method of survey is sought for studying cable trace, it is characterized in that: described in seek survey device comprise input isolation module (1), signal processing module (2), phase modulation module (3), power amplifier module (6), power module (7) and central processing module (5), input isolation module (1) is connected with phase modulation module (3) by signal processing module (2), phase modulation module (3) is connected with signal generating module (4), signal generating module (4) is electrically connected with central processing module (5) by phase modulation module (3), described input isolation module (1) to input signal pre-service, and isolates pre-amplification, to isolation, pre-amplified signal carries out filtering to described signal processing module (2), signal zero crossing is synchronous, described phase modulation module (3), modulates binary phase modulated signal and input signal, , there is binary phase modulated signal in described signal generating module (4), described central processing module (5), control signal gain, signal synchronous modulation, power amplification gain, system protection control, described power amplifier module (6), carries out hybrid modulation to signal and signal amplifies, described power module (7) provides working power for each module of device.
2. a kind of cable trace according to claim 1 seeks survey device, it is characterized in that: described power amplifier module (6) is connected with low-voltage cable by voltage isolation coupling module (9), by signal coupling module (10) and the clipper joint that is coupled, described voltage isolation coupling module (9) transmits to connection low-voltage cable live wire, isolation circuit AC power; Described signal coupling module (10) is by exporting signal with the clipper joint that is coupled, and the induced signal that coupling pincers produce is to running cable.
3. a kind of cable trace according to claim 1 seeks survey device; it is characterized in that: described central processing module (5) is connected with protection circuit (8); described protection circuit, provides protection to the signal overcurrent of central processing module (5), internal protection, high voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520590124.XU CN204855828U (en) | 2015-08-07 | 2015-08-07 | Survey device is sought in cable route |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520590124.XU CN204855828U (en) | 2015-08-07 | 2015-08-07 | Survey device is sought in cable route |
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| CN204855828U true CN204855828U (en) | 2015-12-09 |
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| CN201520590124.XU Expired - Fee Related CN204855828U (en) | 2015-08-07 | 2015-08-07 | Survey device is sought in cable route |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005086A (en) * | 2015-08-07 | 2015-10-28 | 江苏省电力公司淮安供电公司 | Searching and detection device for cable path |
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2015
- 2015-08-07 CN CN201520590124.XU patent/CN204855828U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005086A (en) * | 2015-08-07 | 2015-10-28 | 江苏省电力公司淮安供电公司 | Searching and detection device for cable path |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 |