CN204154843U - A kind of lighting proof strip break-make performance detector - Google Patents
A kind of lighting proof strip break-make performance detector Download PDFInfo
- Publication number
- CN204154843U CN204154843U CN201420576676.0U CN201420576676U CN204154843U CN 204154843 U CN204154843 U CN 204154843U CN 201420576676 U CN201420576676 U CN 201420576676U CN 204154843 U CN204154843 U CN 204154843U
- Authority
- CN
- China
- Prior art keywords
- proof strip
- lighting proof
- coil
- circuit
- induction current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model discloses a kind of lighting proof strip break-make performance detector, comprise one-level coil and induction current treatment circuit; Described one-level coil produces alternating magnetic field, to make to produce induction current in lighting proof strip for connecting 220V civil power; Whether described induction current treatment circuit produces induction current for the loop detected in lighting proof strip, thus determines the on off operating mode of lighting proof strip; Described induction current treatment circuit comprises the flexible Luo-coil, differential amplifier circuit, active detecting circuit, gate circuit, the condition indication circuit that are connected successively; Described flexible Luo-coil is looped around on the metallic conductor of lighting proof strip.The utility model adopts the principle of electromagnetic induction, and sensor and lighting proof strip adopt contactless, can judge the break-make performance of lighting proof strip intuitively, this apparatus structure is simple, easy to operate, result is accurate.
Description
Technical field
The utility model relates to a kind of lighting proof strip break-make performance detector, belongs to thunder and lightning science and technology field.
Background technology
Thunder and lightning is the sound occurred in atmospheric envelope, optical, electrical physical phenomenon, and it brings tremendous influence to human lives and production.In order to reduce the infringement that thunderbolt buildings causes, when high-rise designs, lighting proof strip will be arranged with in deck sections, and be interconnected by downlead and the earth, the thunder and lightning release channel that good is provided, decrease the harm that thunderbolt buildings causes.
During lightening protection engineering detects, whether conventional detection method detects lighting proof strip to be reliably connected with the earth.Often there will be lighting proof strip corrosion phenomena in practice, add the internal resistance of lighting proof strip, the phenomenon that serious corrosion may cause lighting proof strip to rupture, seriously have impact on the effect of lightning protection.In New Buildings, occur fracture soon because lighting proof strip welding does not meet after code requirement causes using, and anticorrosive measure is not in place also can cause lighting proof strip internal corrosion, these are all the potential safety hazards in building lightning protection.Therefore, during lightening protection engineering detects, whether what detect lighting proof strip be closed circuit is very important.
But the internal resistance that detects lighting proof strip loop judges that whether lighting proof strip is closed, be very loaded down with trivial details and be difficult to realize.Larger due to buildings, the girth of lighting proof strip is also comparatively large, and artificial visually examine is difficult to realize.Therefore, need to invent a kind of lighting proof strip break-make performance detector, can facilitate, detect intuitively the break-make performance of lighting proof strip.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of lighting proof strip break-make performance detector, adopt the principle of electromagnetic induction, and sensor and lighting proof strip adopt contactless, the break-make performance of lighting proof strip can be judged intuitively, this apparatus structure is simple, easy to operate, result is accurate.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
The utility model provides a kind of lighting proof strip break-make performance detector, comprises one-level coil and induction current treatment circuit; Described one-level coil produces alternating magnetic field, to make to produce induction current in lighting proof strip for connecting 220V civil power; Whether described induction current treatment circuit produces induction current for the loop detected in lighting proof strip, thus determines the on off operating mode of lighting proof strip; Described induction current treatment circuit comprises the flexible Luo-coil, differential amplifier circuit, active detecting circuit, gate circuit, the condition indication circuit that are connected successively; Described flexible Luo-coil is looped around on the metallic conductor of lighting proof strip.
As further prioritization scheme of the present utility model, described one-level coil is made up of on a U-shaped ferrite enameled wire.
As further prioritization scheme of the present utility model, above-mentioned ferritic permeability is 1000.
As further prioritization scheme of the present utility model, the alternating magnetic field that above-mentioned one-level coil produces is 50Hz.
As further prioritization scheme of the present utility model, the structure of described flexible Luo-coil is: skeleton adopts flexible rubber hose, and coiling is enameled wire, and one end of rubber hose is connected to the copper post that a diameter is less than flexible pipe.
As further prioritization scheme of the present utility model, the outside surface of above-mentioned flexible Luo-coil is also added with one deck soft rubber tube.
As further prioritization scheme of the present utility model, the enlargement factor of described differential amplifier circuit is 10 times.
The utility model adopts above technical scheme compared with prior art, has following technique effect:
1, the present invention adopts non-contact inductive to detect, easy to operate, flexible, to be adapted to various metal loop measurement;
2, simple, the stable and reliable working performance of circuit design of the present invention, strong anti-interference performance;
3, adopt differential amplifier circuit and active detection in circuit structure design of the present invention, detection sensitivity is high;
4, the present invention adopts one-level inductive coil and flexible Luo-coil, and two loop constructions are simple, easy to make, stable performance;
5, the present invention utilizes the principle of electromagnetic induction, and detected lighting proof strip and detector are non-contacting mode, use safety;
6, the present invention is widely used in lightning protection device detects, and is suitable for the detection of various buildings lighting proof strip.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present invention.
Fig. 2 is the structural representation of one-level coil.
Fig. 3 is the structural drawing of flexible Luo-coil.
Fig. 4 is the schematic diagram of differential amplifier circuit.
Fig. 5 is the schematic diagram of active detecting circuit, gate circuit and condition indication circuit.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
The utility model designs a kind of lighting proof strip break-make performance detector, as shown in Figure 1, comprises one-level coil and induction current treatment circuit; Described one-level coil produces alternating magnetic field, to make to produce induction current in lighting proof strip for connecting 220V civil power; Whether described induction current treatment circuit produces induction current for the loop detected in lighting proof strip, thus determines the on off operating mode of lighting proof strip; Described induction current treatment circuit comprises the flexible Luo-coil, differential amplifier circuit, active detecting circuit, gate circuit, the condition indication circuit that are connected successively; Described flexible Luo-coil is looped around on the metallic conductor of lighting proof strip.
Below by specific embodiment, technical scheme of the present invention is further elaborated:
In the present embodiment, the structure of one-level coil as shown in Figure 2, is made up of on a U-shaped ferrite enameled wire.Wherein, ferritic permeability u
rbe 1000, inductance is 370mH, and number of turns is 1500, and the diameter of enameled wire is 0.1mm.U-shaped ferritic be of a size of diameter of section be 2cm, highly for 12cm, width are 6cm.Coil is made up of 2 columniform skeletons, after coil winding completes, paints and soaks, and is enclosed within U-shaped ferrite after oven dry.The principle of one-level coil utilizes the magnetic field of U-shaped ferrite opening part to carry out electromagnetic induction.
In the present embodiment, as shown in Figure 3, the principle of flexible Luo-coil is the principle utilizing electromagnetic induction to flexible Luo-coil, magnetic field is formed around electrical conductor, if the electric current of alternation forms the magnetic field of alternation, be in the coil in alternating magnetic field, produce induced potential at the two ends of coil.The structure of flexible Luo-coil is: skeleton adopt diameter be the flexible rubber hose of 1cm, coiling adopt diameter be the enameled wire of 0.1mm, the coiling number of turn is 250 circles, adopt close around method.After coiling completes, add one deck soft rubber tube at the outside surface of coil and protect.Meanwhile, also access the copper post that a diameter is 0.8cm, length is 2cm in one end of rubber tube, during detection, flexible Luo-coil is formed the closed hoop of a complete cover.
In the present embodiment, as shown in Figure 4, differential amplifier circuit is made up of to the 9th resistance R9 the first operational amplifier IC1, the second operational amplifier IC2, the 3rd operational amplifier IC3, the first resistance R1, wherein, first resistance R1 is the sample resistance of flexible Luo-coil, resistance value is 1 Ω, is connected on the two ends of flexible Luo-coil.Second resistance R2 is connected with the two ends of the first resistance R1 respectively with the 3rd resistance R3's, and the other end of the second resistance R2 connects the negative feedback end of the first operational amplifier IC1, and the other end of the 3rd resistance R3 connects the negative feedback end of the second operational amplifier IC2; The two ends of the 4th resistance R4 connect negative feedback end and the output terminal of the first operational amplifier IC1 respectively, and the two ends of the 5th resistance R5 connect negative feedback end and the output terminal of the second operational amplifier IC2 respectively; The equal ground connection of positive feedback end of the first operational amplifier IC1 and the second operational amplifier IC2; The two ends of the 6th resistance R6 connect the output terminal of the first operational amplifier IC1, the negative feedback end of the 3rd operational amplifier IC3 respectively; The two ends of the 7th resistance R7 connect the output terminal of the second operational amplifier IC2, the positive feedback end of the 3rd operational amplifier IC3 respectively; 7th resistance R7 is connected one end of the 9th resistance R9 with the common port of the positive feedback end of the 3rd operational amplifier IC3, the other end ground connection of the 9th resistance R9; The two ends of the 8th resistance R8 connect negative feedback end and the output terminal of the 3rd operational amplifier IC3 respectively.The output terminal of differential amplifier circuit is the output terminal of the 3rd operational amplifier IC3, is designated as U01, connects the active detecting circuit of rear class.
First operational amplifier IC1, the second operational amplifier IC2 are LF353 amplifier, and the 3rd operational amplifier IC3 is OP27 low noise operational amplifier.Second, third, the 6th, the 7th, the 8th, the value of the 9th resistance is 10k Ω, the value of the 4th, the 5th resistance is 100k Ω.The enlargement factor of whole differential amplifier circuit is 10 times, and the course of work is: the voltage signal at the first resistance two ends delivers to the input end of the 3rd operational amplifier after first, second operational amplifier amplifies, and is finally exported by U01 port.
In the present embodiment, active detecting circuit, gate circuit and condition indication circuit are as shown in Figure 5.
Active detecting circuit is made up of four-operational amplifier IC4, the first diode D1, the second diode D2, electric capacity C, the tenth resistance R10.The output terminal U01 of the positive feedback terminating differential amplifying circuit of four-operational amplifier, one end of negative feedback termination the tenth resistance R10, export the negative electrode of termination first diode D1 and the anode of the second diode D2, the other end of the tenth resistance R10, the equal ground connection of anode of the first diode D1, the negative electrode of the second diode D2 connects one end of electric capacity C, the common port of the tenth resistance R10 and four-operational amplifier IC4, the other end ground connection of electric capacity C respectively.Also comprise a stabilivolt D3, the negative electrode of stabilivolt D3 connects the negative electrode of the second diode D2, the plus earth of stabilivolt D3, and stabilivolt D3 plays amplitude limit effect in circuit.Wherein, four-operational amplifier IC4 adopts OP27 low noise operational amplifier.
Active detecting circuit adopts peak detection principle, if when the output terminal U01 of differential amplifier circuit has a signal, electric capacity C has direct voltage output; Otherwise, without direct voltage output on electric capacity C.The present invention adopts the object of active detecting circuit to be the sensitivity improving detection.
Gate circuit and condition indication circuit are made up of the first triode T1, the second triode T2, the first LED 1, second LED 2.First triode T1 is all connected with the negative electrode of stabilivolt D3 with the base stage of the second triode T2, the equal ground connection of emitter of the first triode T1 and the second triode T2, the collector of the first triode T1 connects the negative electrode of the first LED 1, the collector of the second triode T2 connects the negative electrode of the second LED 2, and the anode of the first LED 1, second LED 2 all connects high level Uc.
Wherein, the first triode T1 is 8050NPN type triode, and the second triode T2 is 8050PNP type triode.When active detecting circuit has signal to export, the first triode T1 conducting, the second triode T2 ends, and the first LED 1 is bright, and represent that the loop in lighting proof strip closes, lighting proof strip leads to; When active detecting circuit does not have signal to export, the first triode T1 ends, the second triode T2 conducting, and the second LED 2 is bright, and represent that the loop in lighting proof strip disconnects, lighting proof strip breaks.
The above; be only the embodiment in the utility model; but protection domain of the present utility model is not limited thereto; any people being familiar with this technology is in the technical scope disclosed by the utility model; the conversion or replacement expected can be understood; all should be encompassed in and of the present utility modelly comprise within scope, therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (7)
1. a lighting proof strip break-make performance detector, is characterized in that, comprises one-level coil and induction current treatment circuit; Described one-level coil produces alternating magnetic field, to make to produce induction current in lighting proof strip for connecting 220V civil power; Whether described induction current treatment circuit produces induction current for the loop detected in lighting proof strip, thus determines the on off operating mode of lighting proof strip;
Described induction current treatment circuit comprises the flexible Luo-coil, differential amplifier circuit, active detecting circuit, gate circuit, the condition indication circuit that are connected successively; Described flexible Luo-coil is looped around on the metallic conductor of lighting proof strip.
2. a kind of lighting proof strip break-make performance detector according to claim 1, is characterized in that, described one-level coil is made up of on a U-shaped ferrite enameled wire.
3. a kind of lighting proof strip break-make performance detector according to claim 2, it is characterized in that, described ferritic permeability is 1000.
4., according to described a kind of lighting proof strip break-make performance detector arbitrary in claims 1 to 3, it is characterized in that, the alternating magnetic field that described one-level coil produces is 50Hz.
5. a kind of lighting proof strip break-make performance detector according to claim 1, it is characterized in that, the structure of described flexible Luo-coil is: skeleton adopts flexible rubber hose, and coiling is enameled wire, and one end of rubber hose is connected to the copper post that a diameter is less than flexible pipe.
6. a kind of lighting proof strip break-make performance detector according to claim 5, it is characterized in that, the outside surface of described flexible Luo-coil is also added with one deck soft rubber tube.
7. a kind of lighting proof strip break-make performance detector according to claim 1, is characterized in that, the enlargement factor of described differential amplifier circuit is 10 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420576676.0U CN204154843U (en) | 2014-10-08 | 2014-10-08 | A kind of lighting proof strip break-make performance detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420576676.0U CN204154843U (en) | 2014-10-08 | 2014-10-08 | A kind of lighting proof strip break-make performance detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204154843U true CN204154843U (en) | 2015-02-11 |
Family
ID=52512945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420576676.0U Expired - Fee Related CN204154843U (en) | 2014-10-08 | 2014-10-08 | A kind of lighting proof strip break-make performance detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204154843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330682A (en) * | 2014-10-08 | 2015-02-04 | 南京信息工程大学 | Lightning strip on-off performance detector |
-
2014
- 2014-10-08 CN CN201420576676.0U patent/CN204154843U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330682A (en) * | 2014-10-08 | 2015-02-04 | 南京信息工程大学 | Lightning strip on-off performance detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206583996U (en) | Ground detection device and pond system | |
| CN106771477B (en) | Large-caliber high-sensitivity high-voltage direct current cable leakage current detection sensor | |
| CN204595584U (en) | Current monitoring module | |
| CN104297611B (en) | A kind of mutual inductor sample circuit | |
| CN204154843U (en) | A kind of lighting proof strip break-make performance detector | |
| CN104330682A (en) | Lightning strip on-off performance detector | |
| CN201359621Y (en) | Sensor for detecting transient voltage to ground signal | |
| CN203561528U (en) | Mutual inductor insulation oil sampling device | |
| CN206223915U (en) | A kind of ground insulator discharge monitoring device of double-current sensor | |
| CN204832317U (en) | Split type electric leakage measuring apparatu | |
| CN202058981U (en) | Power supply socket with electric leakage current measurement protection apparatus | |
| CN103941164A (en) | Portable intelligent dual-purpose electronic device for partial discharge and on-line monitoring of transformer | |
| CN204154787U (en) | Insulator spread voltage tester | |
| CN203825776U (en) | Voice alarm device for high-voltage electrical network grounding rod | |
| CN203745528U (en) | Induction-type electricity measurer | |
| CN204228876U (en) | Ground detection device | |
| CN104345196A (en) | Active weak power frequency current induction coil | |
| CN216670238U (en) | Fill electric pile earth connection broken string detection device | |
| CN204154778U (en) | A kind of active faint power current inductive coil | |
| CN104880987A (en) | Current monitoring module | |
| CN114200269A (en) | Sleeve pulse current sensing system and method for partial discharge detection of transformer | |
| CN204203393U (en) | Electric wire breaking point detection circuit | |
| CN204012950U (en) | A kind of power supply device of wire power taking | |
| CN204065274U (en) | A kind of 220kv lightning arrester on-line monitoring sensor | |
| CN204190711U (en) | Transformer grounding line current induction amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150211 Termination date: 20161008 |