CN1908688A - Built-in type low-voltage cable detecting device - Google Patents
Built-in type low-voltage cable detecting device Download PDFInfo
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- CN1908688A CN1908688A CN 200610047509 CN200610047509A CN1908688A CN 1908688 A CN1908688 A CN 1908688A CN 200610047509 CN200610047509 CN 200610047509 CN 200610047509 A CN200610047509 A CN 200610047509A CN 1908688 A CN1908688 A CN 1908688A
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- 238000005859 coupling reaction Methods 0.000 claims description 16
- 230000003321 amplification Effects 0.000 claims description 8
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Abstract
The related pre-buried low-voltage cable detector for cable break point and connection abnormal comprises: an electric standing wave signal generator to send carrier signal to cable, and a detection device to receive signal and make decision according to signal strength. This invention is non-contact detection, can strike electric-larceny behavior, and reduces damage to cable.
Description
Technical field
The present invention relates to a kind of sniffer, relate in particular to a kind of breakpoint of built-in type low-voltage cable and built-in type low-voltage cable detecting device that the type low-voltage cable wiring is surveyed unusually of being used for.
Background technology
For a long time, stealing electricity phenomenon is the problem that power supply enterprise extremely pays close attention to always, and stealing not only makes national wealth sustain losses severely, and influences the economic benefit of power supply enterprise, and brings a series of potential safety hazard and social concern, endangers huge.For anti-electricity-theft, electric power enterprise is set up various technological means such as measures of anti-stealing electricity in the electric energy meter meter.This has stopped some stealings on certain program, but also raising constantly of electricity filching means, stealing electricity method is more hidden, connects means such as external cable such as body of wall internal wiring, private before the table.Even this make electric power enterprise know certain user measure electric weight undesired, suspect that electricity filching behavior is arranged, also often can't determine electricity filching behavior owing to lack the reconnaissane tool that is fit to.And if in pre-buried body of wall or underground cable damage, it is very difficult to seek breakpoint.
Summary of the invention
The invention provides a kind of built-in type low-voltage cable detecting device in order to solve the problems of the technologies described above, purpose is to being embedded in the body of wall or the unusual or breakpoint of underground type low-voltage cable wiring is surveyed.
Another object of the present invention is to survey the trend of electric wire, convenient construction.
The present invention solves structure that its technical matters adopts: built-in type low-voltage cable detecting device is made of electric power notes ripple signalling means and detection instrument; Wherein electric power notes ripple signalling means is to be made of following structure: button is used for sending instruction to microcontroller; Microcontroller be used to receive the instruction that button sends, and the condition code generating unit transmits control signal; The condition code generating unit is used to receive the control signal of microcontroller, and condition code is sent to modulating unit; The carrier wave generating unit; Generate carrier wave and carrier wave is sent to modulating unit; Modulating unit after the carrier wave that condition code that the condition code generating unit is transmitted and carrier wave generating unit generate is modulated is exported signal; Coupling unit is sent on the circuit after being coupled the signal of modulation; Detection instrument is to be made of following structure: button portion; Be used for transmitting control signal to the 2nd microcontroller; Display unit is used for the signal that the 2nd microcontroller is handled is shown; Inductor is used for injecting the contactless detection identification of electromagnetic signal; Amplifier amplifies and is sent in the bandpass filter detected electromagnetic signal; Bandpass filter is used to detect the electromagnetic signal after the effective amplification and is sent to phase locked-loop unit; Phase locked-loop unit is used for the electromagnetic signal that bandpass filter transmits is carried out after the decoupling zero condition code that gets being sent to analog to digital converter; Analog to digital converter is used for that the 2nd microcontroller is changed and be sent to condition code and discerns; The 2nd microcontroller is used to receive the control signal of button portion, and outputs to display unit after the condition code that analog to digital converter transmits discerned.
Described condition code generating unit, carrier wave generating unit, modulating unit, coupling unit are three the road or one the tunnel.
Described built-in type low-voltage cable detecting device also comprises power amplification unit, is used for the signal after the modulation is amplified laggard line output to coupling unit.
Described inductor, amplifier, bandpass filter, phase locked-loop unit, analog to digital converter are two the road or one the tunnel.
Described button comprises operating switch, intensity switch, OptionButton; Wherein operating switch is that the working power of electric power notes ripple signalling means is carried out switch; Intensity switch is electric power to be annotated ripple signalling means transmit signal strength control; OptionButton is to be single-phase or three-phase is selected to type low-voltage cable.
Described button portion comprises power key, range key, function key, and wherein the range key is to select surveying distance; Function key is that the detection type of carrier wave detection or voltage detection is selected.
Described button portion power key, function key, positioning key, wherein function key is a manual shift, the location is strong to be as self shifter.
Described display unit shows the signal intensity of surveying type, detecting.
The described signal intensity that detects is divided into number of signals number of degrees value, grade, amplitude.
Described detection instrument is provided with hummer, is used for the cue power, and signal is changed from weak to strong, and the prompting audio frequency is by accelerating slowly.
Advantageous effect of the present invention: the present invention annotates the ripple signalling means by electric power and sends carrier signal to cable, and detection instrument is by the inductor received signal, and the intensity difference that unusual wiring point or breakpoint receive is judged.The present invention is not destroying under body of wall and the on-the-spot charged or uncharged situation pre-buried type low-voltage cable, carrying out noncontact surveys, whether wiring is unusual before can detecting the interior table of body of wall, thereby effectively hit electricity filching behavior, also can survey simultaneously, pre-buried cable fault is searched the minimizing time, increase work efficiency the breakpoint of pre-buried cable, body of wall inner cable trend is judged and can be avoided cable when constructing, reduce destruction cable.
Description of drawings
Fig. 1 is a structure principle chart of the present invention.
Fig. 2 a is that the present invention surveys synoptic diagram to leak source of the cable in the body of wall.
Fig. 2 b is that Fig. 2 a is to a leak source detected intensity synoptic diagram.
Fig. 3 a is that the present invention surveys synoptic diagram to two leak sources of the cable in the body of wall.
Fig. 3 b is that Fig. 3 a is to two leak source detected intensity synoptic diagram.
Among the figure 1, electric power annotates the ripple signalling means; 11, button; 12, microcontroller; 13, condition code generating unit; 14, carrier wave generating unit; 15, modulating unit; 16, power amplification unit; 17, coupling unit; 2, detection instrument; 21, button portion; 22, display unit; 23, inductor; 24, amplifier; 25, bandpass filter; 26, phase locked-loop unit; 27, analog to digital converter; 28, the 2nd microcontroller.
Embodiment
The invention will be further described below in conjunction with accompanying drawing
With reference to Fig. 1 built-in type low-voltage cable detecting device, constitute by electric power notes ripple signalling means 1 and detection instrument 2; Wherein electric power notes ripple signalling means 1 is to be made of following structure: button 11 is used for sending instruction to microcontroller 12; Microcontroller 12 is used to receive the instruction that button 11 sends, and transmits control signal to condition code generating unit 13; Condition code generating unit 13 is used to receive the control signal of microcontroller 12, and condition code is sent to modulating unit 15; Carrier wave generating unit 14; Generate carrier wave and carrier wave is sent to modulating unit 15; Modulating unit 15 after the carrier wave that condition code that condition code generating unit 13 is transmitted and carrier wave generating unit 14 generate is modulated is exported signal; Coupling unit 17 is sent on the circuit after being coupled the signal of modulation;
Described condition code generating unit 13, carrier wave generating unit 14, modulating unit 15, coupling unit 17 one tunnel.
Built-in type low-voltage cable detecting device also comprises power amplification unit 16, is used for the signal after the modulation is amplified laggard line output to coupling unit 17.
Described inductor 23, amplifier 24, bandpass filter 25, phase locked-loop unit 26, analog to digital converter 27 are one the tunnel.
Described button 11 comprises operating switch, intensity switch, OptionButton; Wherein operating switch is that the working power of electric power notes ripple signalling means 1 is carried out switch; Intensity switch is electric power to be annotated ripple signalling means 1 transmit signal strength control; OptionButton is to be that single-phase transmission or three-phase send and select to type low-voltage cable.Button 11 is located at electric power and annotates on the panel of ripple signalling means 1, also is provided with 220AV supply hub, under-voltage pilot lamp, charging indicator light on panel.
Described button portion 21 comprises power key, range key, function key, and wherein the range key is to select surveying distance; Function key is that the detection type of carrier wave detection or voltage detection is selected.When this button portion 21 is used for that detection instrument is common to be searched.
Need accurately search cable when detection instrument 2 finds problematic cable scope after common searching, button portion 21 comprises
Described display unit 22 shows the signal intensity of surveying type, detecting.
The described signal intensity that detects is divided into number of signals number of degrees value, grade, amplitude.
Described detection instrument is provided with hummer, is used for the cue power, and signal is changed from weak to strong, and the prompting audio frequency is by accelerating slowly.
This enforcement can be used for the building or the sub-district of single phase power supply, sends signal.And butted line point also uses single-phase transmission signal when carefully locating.
To sub-district or building use be three phase supply the time, condition code generating unit 13, carrier wave generating unit 14, modulating unit 15, power amplification unit 16, the coupling unit 17 of electric power notes ripple signalling means 1 are three the tunnel among the embodiment 1, three tunnel coupling unit 17 is connected with A, B, the C of three phase supply respectively, and three tunnel coupling unit 17 is connected with zero line; The inductor 23 of detection instrument 2, amplifier 24, bandpass filter 25, phase locked-loop unit 26, analog to digital converter 27 are two the tunnel.
Embodiment 3
When finding problematic cable scope after common searching, need accurately search by detection instrument 2 cable, button portion 21 comprises power key, function key, positioning key, wherein function key is a manual shift, whenever enter NextState by a range, when range by 0 grade to 9 grades button, again by once then returning 0 grade.The location is strong to be as self shifter, can search for gear automatically.Other is with embodiment 1.
Below the course of work of the present invention is described.
Judge that at first the circuit that will survey is single-phase or three-phase, the coupling unit that electric power is annotated the ripple signalling means is connected on the circuit by spliced cable, the circuit of surveying is single-phasely then spliced cable to be connected on live wire and the zero line, if the detection circuit is three-phase then earlier three road coupling units is received on the zero line by spliced cable, again three road coupling units are received A respectively, B, C goes up mutually, open and press OptionButton behind the operating switch on the panel to select single-phase transmission signal still be that three-phase sends signal, and control intensity switch strength of transmitted signals is controlled by microcontroller, to surveying line signaling.Open the power key of detection instrument, press the range key and select long-rangely, seek the preliminary position of cable trend.
Detection method for the cable that does not have the metallic shield pipe: the signal amplitude of detection instrument display unit can expire lattice, can select intermediate range or short range by the range key, dwindle investigative range, trend that can clear identification cable, and can discern branch and "T"-shaped abnormal conditions such as connect.If the signal amplitude of detection instrument display unit is still bigger in short range, electric power is annotated the intensity of ripple signalling means can select weak retaining.
Detection method for the cable that the metallic shield pipe is arranged: do not have the metal tube of seam, carrier wave and voltage signal are shielded fully, and detection instrument is surveyed less than carrier signal; But at the opening and the seam crossing of metal tube, carrier signal can be come out by diffraction partly, and the intensity and the openings of sizes of carrier signal have relation, after definite cable scope, position with accurately searching.Big as Fig. 2 a, 2b, 3a, 3b in the signal intensity that has leak source cable place to detect, therefore can search the unusual or leak source of wiring easily.
The present invention can also carry out phase sequence and survey, and under the situation of cutting off the power supply or not cutting off the power supply, detection instrument can test out the power supply phase sequence of supply transformer to low-voltage customer, as A phase, B phase, C phase.
Voltage detection, whether the cable of surveying in body of wall or other object is charged.
Claims (10)
1, built-in type low-voltage cable detecting device is characterized in that being made of electric power notes ripple signalling means and detection instrument;
Wherein electric power notes ripple signalling means is to be made of following structure: button is used for sending instruction to microcontroller; Microcontroller is used to receive the instruction that button sends, and transmits control signal to the condition code generating unit; The condition code generating unit is used to receive the control signal of microcontroller, and condition code is sent to modulating unit; The carrier wave generating unit; Generate carrier wave and carrier wave is sent to modulating unit; Modulating unit after the carrier wave that condition code that the condition code generating unit is transmitted and carrier wave generating unit generate is modulated is exported signal; Coupling unit is sent on the circuit after being coupled the signal of modulation;
Detection instrument is to be made of following structure: button portion; Be used for transmitting control signal to the 2nd microcontroller; Display unit is used for the signal that the 2nd microcontroller is handled is shown; Inductor is used for injecting the contactless detection identification of electromagnetic signal; Amplifier amplifies and is sent in the bandpass filter detected electromagnetic signal; Bandpass filter is used to detect the electromagnetic signal after the effective amplification and is sent to phase locked-loop unit; Phase locked-loop unit is used for the electromagnetic signal that bandpass filter transmits is carried out after the decoupling zero condition code that gets being sent to analog to digital converter; Analog to digital converter is used for that the 2nd microcontroller is changed and be sent to condition code and discerns; The 2nd microcontroller is used to receive the control signal of button portion, and outputs to display unit after the condition code that analog to digital converter transmits discerned.
2, built-in type low-voltage cable detecting device according to claim 1 is characterized in that described condition code generating unit, carrier wave generating unit, modulating unit, coupling unit are three the road or one the tunnel.
3, built-in type low-voltage cable detecting device according to claim 1 and 2 is characterized in that also comprising power amplification unit, is used for the signal after the modulation is amplified laggard line output to coupling unit.
4, built-in type low-voltage cable detecting device according to claim 1 is characterized in that inductor, amplifier, bandpass filter, phase locked-loop unit, analog to digital converter are two the road or one the tunnel.
5, built-in type low-voltage cable detecting device according to claim 1 is characterized in that described button comprises operating switch, intensity switch, OptionButton; Wherein operating switch is that the working power of electric power notes ripple signalling means is carried out switch; Intensity switch is electric power to be annotated ripple signalling means transmit signal strength control; OptionButton is to be that single-phase transmission or three-phase send and select to type low-voltage cable.
6, built-in type low-voltage cable detecting device according to claim 1 is characterized in that described button portion comprises power key, range key, function key, and wherein the range key is to select surveying distance; Function key is that the detection type of carrier wave detection or voltage detection is selected.
7, built-in type low-voltage cable detecting device according to claim 1 is characterized in that described button portion power key, function key, positioning key, and wherein function key is a manual shift, and the location is strong to be as self shifter.
8, built-in type low-voltage cable detecting device according to claim 1 is characterized in that described display unit shows detection type, the signal intensity that detects, range.
9, built-in type low-voltage cable detecting device according to claim 8 is characterized in that the described signal intensity that detects is divided into number of signals number of degrees value, grade, amplitude.
10, built-in type low-voltage cable detecting device according to claim 1 is characterized in that described detection instrument is provided with hummer, is used for the cue power, and signal is changed from weak to strong, and the prompting audio frequency is by accelerating slowly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100475097A CN100504414C (en) | 2006-08-22 | 2006-08-22 | Built-in type low-voltage cable detecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100475097A CN100504414C (en) | 2006-08-22 | 2006-08-22 | Built-in type low-voltage cable detecting device |
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| CN1908688A true CN1908688A (en) | 2007-02-07 |
| CN100504414C CN100504414C (en) | 2009-06-24 |
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| CNB2006100475097A Active CN100504414C (en) | 2006-08-22 | 2006-08-22 | Built-in type low-voltage cable detecting device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196550B (en) * | 2007-12-21 | 2012-01-11 | 赵瑞琳 | Power cable monitoring device and method for monitoring power cable state using the same |
| CN103278859A (en) * | 2013-06-07 | 2013-09-04 | 国家电网公司 | Signal receiving and processing system based on underground cable comprehensive detecting system |
| CN103985298A (en) * | 2009-11-16 | 2014-08-13 | 江苏省电力公司常州供电公司 | Cable fault simulating and positioning system |
| CN105339801A (en) * | 2013-07-02 | 2016-02-17 | 皇家飞利浦有限公司 | Problem detection in cable system with fuses |
| CN108646301A (en) * | 2018-06-11 | 2018-10-12 | 国网山东省电力公司烟台供电公司 | A kind of detection method and detection device in low-voltage cable path |
| CN109490698A (en) * | 2019-01-08 | 2019-03-19 | 上海市安全生产科学研究所 | A kind of identification of lines system |
| 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 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337119B (en) * | 2013-06-08 | 2015-11-18 | 山东康威通信技术股份有限公司 | A kind of method of armored electric cable theft prevention monitoring and location |
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2006
- 2006-08-22 CN CNB2006100475097A patent/CN100504414C/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196550B (en) * | 2007-12-21 | 2012-01-11 | 赵瑞琳 | Power cable monitoring device and method for monitoring power cable state using the same |
| CN103985298A (en) * | 2009-11-16 | 2014-08-13 | 江苏省电力公司常州供电公司 | Cable fault simulating and positioning system |
| CN103278859A (en) * | 2013-06-07 | 2013-09-04 | 国家电网公司 | Signal receiving and processing system based on underground cable comprehensive detecting system |
| CN103278859B (en) * | 2013-06-07 | 2015-12-09 | 国家电网公司 | Based on the Signal reception disposal system of underground cable comprehensive detection system |
| CN105339801A (en) * | 2013-07-02 | 2016-02-17 | 皇家飞利浦有限公司 | Problem detection in cable system with fuses |
| CN108646301A (en) * | 2018-06-11 | 2018-10-12 | 国网山东省电力公司烟台供电公司 | A kind of detection method and detection device in low-voltage cable path |
| CN109490698A (en) * | 2019-01-08 | 2019-03-19 | 上海市安全生产科学研究所 | A kind of identification of lines system |
| 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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| Publication number | Publication date |
|---|---|
| CN100504414C (en) | 2009-06-24 |
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Owner name: CHANGCHUN POWER SUPPLY COMPANY, JILIN ELECTRIC POW Free format text: FORMER OWNER: CHANGCHUN POWER SUPPLY COMPANY Effective date: 20121109 |
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Effective date of registration: 20121109 Address after: 110013 No. 105 North Station Road, Shenhe District, Liaoning, Shenyang Patentee after: Shenyang Inst. of Power Engineering Technlogy Patentee after: Changchun Power Supply Corporation of Jilin Electric Power Corporation Patentee after: State Grid Corporation of China Address before: 110013 No. 105 North Station Road, Shenhe District, Liaoning, Shenyang Patentee before: Shenyang Inst. of Power Engineering Technlogy Patentee before: Changchun Power Supply Company |