CN207851193U - Detector wire with detection of electrical leakage - Google Patents
Detector wire with detection of electrical leakage Download PDFInfo
- Publication number
- CN207851193U CN207851193U CN201721899768.2U CN201721899768U CN207851193U CN 207851193 U CN207851193 U CN 207851193U CN 201721899768 U CN201721899768 U CN 201721899768U CN 207851193 U CN207851193 U CN 207851193U
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- Prior art keywords
- shell
- detection
- circuit
- handle
- induction coil
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Abstract
The utility model discloses a kind of detector wires with detection of electrical leakage, include the cylindrical handle of the hemispherical shell and rear end in front end, and the shell and cylindrical handle are made of stainless steel, and electromagnetic induction coil and detection circuit are provided in shell；The electromagnetic induction coil is parallel with resonant capacitance C1, electromagnetic induction coil forms resonant tank with resonant capacitance C1, the detection circuit includes amplifying circuit, one end of electromagnetic induction coil is connected with the input terminal of amplifying circuit, the other end of electromagnetic induction coil is grounded, the inverting input of the in-phase input end of the output end connection integrated transporting discharging comparator of amplifying circuit, integrated transporting discharging comparator is connected with reference circuit, the power on/off of the output end control indicator light of integrated transporting discharging comparator.Insulating washer is also set up between shell and cylindrical handle, is connected by neon bulb between shell and handle.The utility model is simple in structure, strong antijamming capability, and also has earth leakage detection functions.
Description
Technical field
The utility model is related to domestic electric appliance fields, and in particular to a kind of detector wire with detection of electrical leakage.
Background technology
During house decoration checks, the electric wire in metope often has some impact on construction, or even causes accident, causes people
Member's property loss.If can be detected before construction, the arrangement of the electric wire in metope is found out, then can be effectively prevented related thing
Therefore the generation of loss.
Current detector wire, complicated, with high costs, size and precision index etc. are also short of.In addition
The existing detector wire with detection of electrical leakage is not due to taking shielding and interference protection measure, so poor anti jamming capability,
Since electric wire is embedded in wall, the electric current of many electric appliances is small, and the electromagnetic signal generated is very faint, the electric light of outside,
Electric appliance and radio signal are likely to influence the accuracy of detection signal, lead to the judgement for generating mistake, therefore, in the market
There is an urgent need to a kind of compact dimensions, cost of manufacture is relatively low, manufacture craft is simple, the detector wire of strong antijamming capability.
During detecting electric wire within the walls, within the walls electric wire may due to electric wire aging or immersion etc., can leak electricity and
Cause metope to charge, be easy to happen electric leakage accident, influences the safety of user.
Existing detector wire has a single function, and vacancy rate is high, cannot effectively play a role.
Utility model content
In view of at least one defect of the prior art, the purpose of this utility model is to provide a kind of with detection of electrical leakage
Detector wire, the detector wire is simple in structure, and strong antijamming capability is easy to use, and also has earth leakage detection functions,
Protect the safety of user.
In order to achieve the above object, the utility model adopts the following technical scheme that, a kind of electric wire spy with detection of electrical leakage
Device is surveyed, it is critical that including hemispherical shell, the big end opening of shell, side of the shell far from its opening is through felt pad
Circle is connected with columnar handle, and the shell and handle are made of stainless steel material, and electromagnetic induction coil is provided in shell
And circuit board, detection circuit is provided on circuit board；
It is provided with cavity in the handle, power supply is provided in cavity, the power supply is accumulator, which is inspection
Slowdown monitoring circuit is powered, and the outer wall of handle is provided with solar panel, the charged circuit of solar panel is accumulator
Charging；
The iron core of the electromagnetic induction coil including " C " shape and the coil being wrapped on iron core, the opening setting of shell
There are panel, the both ends insertion panel of iron core simultaneously to be flushed with the outer end face of panel；The iron core is made of ultramicro-crystal alloy；
The electromagnetic induction coil is parallel with resonant capacitance C1, and electromagnetic induction coil forms resonance with resonant capacitance C1 and returns
Road, the detection circuit include amplifying circuit, and one end of electromagnetic induction coil is connected with the input terminal of amplifying circuit, electromagnetic induction
The other end of coil is grounded, and the in-phase input end of the output end connection integrated transporting discharging comparator of amplifying circuit, integrated transporting discharging compares
The inverting input of device is connected with reference circuit, and the output end of integrated transporting discharging comparator connects one end of indicator light, indicator light
The other end connects the anode of diode D2, the cathode ground connection of diode D2；The outer wall in shell or handle is arranged in the indicator light；
Further include electric-leakage detection circuit, electric-leakage detection circuit includes neon bulb, and one end of neon bulb is connected with shell, neon bulb it is another
One end is connected by current-limiting resistance with handle.
The utility model is convenient and practical, and when use covers on the opening of the shell of front on metope, due to by electromagnetic induction
Coil and detection circuit are set in shell, and the shell that stainless steel makes can effectively shield electric light, electric appliance and radio communication
The electromagnetic signal of generation keeps result of detection more accurate.
Electromagnetic induction coil forms resonant tank, resonant frequency and the 50Hz power frequencies of the resonant tank with resonant capacitance C1
The frequency of signal is identical, can effectively be amplified power frequency component, to inhibit remaining electric appliance and radio communication to generate
Electromagnetic signal and common mode interference signal.
The signal of electromagnetic induction coil is after amplifying circuit amplifies, due to being possible to containing indoor electricity in the signal of amplification
The AC influence signal and common mode interference signal for the 50Hz that lamp, electric appliance occur, due to the shielding action of shell, these signals are equal
Less than electric wire generate 50Hz power frequency components, be compared by integrated transporting discharging comparator, integrated transporting discharging comparator it is reversed defeated
Enter end and be connected with reference circuit, which generates a comparison voltage signal, since interference signal is less than the electricity of reference circuit
Signal is pressed, therefore is integrated amplifier comparator to masking, the power frequency component that live wire generates is due to being more than reference circuit
Comparison voltage signal, integrated transporting discharging comparator can be made to export positive voltage and make indicator light shine.
Therefore the anti-jamming signal ability of the present apparatus is strong, and structure is also fairly simple, of low cost, is convenient for users
It uses.
Additionally by the comparison voltage signal for adjusting reference circuit, the detector wire with detection of electrical leakage can also be adjusted
Sensitivity, comparison voltage signal is smaller, and sensitivity is higher.For the ease of being accurately positioned, reduction error can also be by sensitivity
Turn down, so only when the lucky face electric wire of shell, indicator light just shine, distance farther out when do not shine.
Since shell and handle are made of stainless steel material, insulating washer is set between shell and handle, holds hand
The opening portion of shell, is abutted with metope detection within the walls whether there is or not electric wire by handle, when electric wire is leaked electricity due to broken skin or water logging, neon bulb hair
Light reminds user's metope electric leakage at this, prevents that electric shock accidents, detection process are safer.
The present apparatus is powered using solar energy for detector wire, removes the trouble for charging and replacing battery repeatedly from.
Electromagnetic induction coil is arranged to " C " shape and embedded panel, metope is abutted against convenient for the both ends of electromagnetic induction coil
On, the power frequency component that electric wire within the walls is sent out can be effectively received, the magnetic property of ultramicro-crystal alloy is good, can effectively acquire power frequency letter
Number, it prevents from losing.
The circuit board is circle, and circuit board is provided centrally with through-hole, screw is equipped in through-hole, circuit board passes through spiral shell
Nail is connect with the inner wall of shell.
Above structure facilitates the repair of detection circuit convenient for assembly and disassembly circuit board.
Further include digital multimeter, the control circuit of the digital multimeter is set in cavity, the display of digital multimeter
Device is fixedly installed on the outer wall of handle.
People will detect whether electric wire is connected when detecting electric wire, toward contact, and whether the voltage at electric wire both ends is normal,
Therefore it is additionally provided with digital multimeter in the present apparatus, circuit is facilitated to detect.Also the utilization rate of detector wire is improved.
The digital multimeter includes mainly two grades of alternating voltage detection and resistance measurement, is additionally provided with and cuts in the outer wall of handle
It changes and control button.
The outer wall of handle is provided with the groove of rectangle, and display is fixedly installed in groove.
Above structure is convenient for fixed display, and display insertion groove is seemed more beautiful.
The handle includes pipe and end cap, and front end and the insulating washer of pipe are connected, and the rear end of pipe is connected with end cap,
The side of the end cap is hinged with pipe, and the other side is connect with pipe by clamping structure.
It is arranged by above structure, the endoporus of pipe forms cavity, and end cap is connect with pipe by clamping structure, convenient for production
The assembly and repair of product.Facilitate repair control circuit.
The clamping structure includes the rubber ring of elasticity and the straight pin that coordinates with rubber ring, and pipe rear end is axially opened
Equipped with circular hole, rubber ring is fixedly installed in circular hole, and the front end face of straight pin and end cap is connected, and straight pin can be in the work of external force
It is caught in the endoporus of rubber ring under or is extracted from the endoporus of rubber ring.
Above-mentioned clamping structure is simple, facilitates processing, when end cap to be opened, transfers to straight pin outward, when closing
When end cap, straight pin is inserted into the endoporus of rubber ring.
Advantageous effect:The utility model provides a kind of detector wire with detection of electrical leakage, should have detection of electrical leakage
Detector wire it is simple in structure, strong antijamming capability is easy to use, and also have earth leakage detection functions, protect user's
Safety.
Description of the drawings
Fig. 1 is the structure chart of the utility model.
Fig. 2 is the circuit diagram of detection circuit；
Fig. 3 is the circuit diagram of charging circuit；
Fig. 4 is the portions the A enlarged drawing of Fig. 1.
Specific implementation mode
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
As Figure 1-Figure 4, the utility model provides a kind of detector wire with detection of electrical leakage, including hemispherical
Shell 1, the big end opening of shell 1, shell 1 far from its opening side be connected with columnar handle 2 through insulating washer 13,
The shell 1 and handle 2 are made of stainless steel material, and electromagnetic induction coil 3 and circuit board 4, circuit board are provided in shell 1
Detection circuit is provided on 4；
It is provided with cavity in the handle 2, power supply is provided in cavity, the power supply is accumulator 6, the accumulator 6
It powers for detection circuit, the outer wall of handle 2 is provided with solar panel 7,7 charged circuit of the solar panel is
Accumulator 6 charges；
The electromagnetic induction coil 3 is parallel with resonant capacitance C1, and electromagnetic induction coil 3 forms resonance with resonant capacitance C1
Circuit, the detection circuit include amplifying circuit, and one end of electromagnetic induction coil 3 is connected with the input terminal of amplifying circuit, electromagnetism
The other end of induction coil 3 is grounded, and the in-phase input end of the output end connection integrated transporting discharging comparator 41 of amplifying circuit integrates fortune
The inverting input for putting comparator 41 is connected with reference circuit, and the output end of integrated transporting discharging comparator 41 connects the one of indicator light 5
End, the anode of the other end connection diode D2 of indicator light 5, the cathode ground connection of diode D2；The indicator light 5 is arranged in shell
1 or handle 2 outer wall；
Further include electric-leakage detection circuit, electric-leakage detection circuit includes neon bulb 9, and one end of neon bulb 9 is connected with shell 1, neon bulb 9
The other end pass through current-limiting resistance and handle 2 and connect.
The utility model is convenient and practical, and when use covers on the opening of the shell 1 of front on metope, due to by electromagnetic induction
Coil 3 and detection circuit are set in shell 1, and the shell 1 that stainless steel makes can effectively shield electric light, electric appliance and radio
The electromagnetic signal generated is communicated, keeps the result of detection of the detector wire with detection of electrical leakage more accurate.
Electromagnetic induction coil 3 and resonant capacitance C1 forms resonant tank, resonant frequency and the 50Hz power frequencies of the resonant tank
The frequency of signal is identical, can effectively be amplified power frequency component, to inhibit remaining electric appliance and radio communication to generate
Electromagnetic signal and common mode interference signal.
The signal of electromagnetic induction coil 3 is after amplifying circuit amplifies, due to being possible to containing indoor in the signal of amplification
The AC influence signal and common mode interference signal for the 50Hz that electric light, electric appliance occur, due to the shielding action of shell 1, these letters
Number be respectively less than electric wire generate 50Hz power frequency components, be compared by integrated transporting discharging comparator 41, integrated transporting discharging comparator 41
Reverse input end be connected with reference circuit, the reference circuit generate a comparison voltage signal, due to interference signal be less than reference
The voltage signal of circuit, therefore amplifier comparator 41 is integrated to masking, the power frequency component that live wire generates is due to big
In the comparison voltage signal of reference circuit, integrated transporting discharging comparator 41 can be made to export positive voltage and indicator light 5 is made to shine.
Therefore the anti-jamming signal ability of the present apparatus is strong, and structure is also fairly simple, of low cost, is convenient for users
It uses.
Additionally by the comparison voltage signal for adjusting reference circuit, the detector wire with detection of electrical leakage can also be adjusted
Sensitivity, comparison voltage signal is smaller, and sensitivity is higher.For the ease of being accurately positioned, reduction error can also be by sensitivity
Turn down, so only when 1 lucky face electric wire of shell, indicator light 5 just shines, distance farther out when do not shine.
Since shell 1 and handle 2 are made of stainless steel material, insulating washer 13 is set between shell 1 and handle 2,
Handle 2 is held, the opening portion of shell 1 is abutted with metope and detects that whether there is or not electric wires within the walls, when electric wire is leaked due to broken skin or water logging
Electricity, neon bulb 9 shine, and remind user's metope electric leakage at this, prevent that electric shock accidents, detection process are safer.
The present apparatus is powered using solar energy for detector wire, removes the trouble for charging and replacing battery repeatedly from.
The circuit board 4 is circle, and circuit board 4 is provided centrally with through-hole, and screw is equipped in through-hole, and circuit board 4 is logical
Screw is crossed to connect with the inner wall of shell 1.
Above structure facilitates the repair of detection circuit convenient for assembly and disassembly circuit board 4.
Further include digital multimeter 8, the control circuit 82 of the digital multimeter 8 is set in cavity, digital multimeter 8
Display 81 is fixedly installed on the outer wall of handle 2.
People will detect whether electric wire is connected when detecting electric wire, toward contact, and whether the voltage at electric wire both ends is normal,
Therefore it is additionally provided with digital multimeter 8 in the present apparatus, circuit is facilitated to detect.Also the utilization rate of detector wire is improved.
The digital multimeter 8 includes mainly two grades of alternating voltage detection and resistance measurement, is additionally provided in the outer wall of handle 2
Switching and control button.Switching and control button are not shown in Fig. 1.
The outer wall of handle 2 is provided with the groove of rectangle, and display 81 is fixedly installed in groove.
Above structure is convenient for fixed display 81, and the insertion groove of display 81 is seemed more beautiful.
The handle 2 includes pipe 22 and end cap 23, and front end and the insulating washer 13 of pipe 22 are connected, the rear end of pipe 22
It is connected with end cap 23, the side of the end cap 23 is hinged with pipe 22, and the other side is connect with pipe 22 by clamping structure.
It is arranged by above structure, the endoporus of pipe 22 forms cavity, and end cap 23 is connect with pipe 22 by clamping structure,
Convenient for the assembly and repair of product.Facilitate repair control circuit 82.
The clamping structure includes the rubber ring 14 of elasticity and the straight pin 15 that coordinates with rubber ring 14,22 rear end of pipe
Circular hole is axially offered, rubber ring 14 is fixedly installed in circular hole, and straight pin 15 includes cylindrical portion 15a, cylindrical portion 15a's
Rear end and the front end face of end cap 23 are connected, and the front end of cylindrical portion 15a is connected with spherical head 15b, and straight pin 15 can be outside
It is caught in the endoporus of rubber ring 14 under the action of power or is extracted from the endoporus of rubber ring 14.
Above-mentioned clamping structure is simple, facilitates processing, when end cap 23 to be opened, straight pin 15 is transferred to outward, when wanting
When closing end cap 23, straight pin 15 is inserted into the endoporus of rubber ring 14.
The hole size of the present embodiment rubber ring 14 is 3mm, and the outer ring size of rubber ring 14 is 5mm, the ruler of cylindrical portion 15a
Very little is 2.8mm, and the size of head 15b is 3.6mm.
The size of head 15b is slightly larger than the hole size of rubber ring 14, and cylindrical portion 15a's is dimensioned slightly smaller than rubber ring 14
Hole size facilitates the endoporus that straight pin 15 is inserted into rubber ring 14.
The amplifying circuit includes NPN triode VT, the filtered capacitance C2 of base stage and the electromagnetism sense of NPN triode VT
One end of coil 3 is answered to be connected, the base stage of NPN triode VT is also through resistance R2 connection power supplys, and the base stage of NPN triode VT is also
It is grounded through resistance R1, the collector of NPN triode VT is through resistance R3 connection power supplys, and the collector of NPN triode VT is through electricity
Hold the in-phase input end of C4 connection integrated transporting dischargings comparator 41, the emitter of NPN triode VT is grounded through resistance R4, the resistance
R4 is parallel with shunt capacitance C3.
Above-mentioned amplification circuit structure is simple, can effectively filter common-mode signal, and amplifying circuit can effectively amplify
50Hz AC signals.
One end connection electricity of the reference circuit packet voltage-stabiliser tube D1, resistance R8, resistance R5 and adjustable resistance R6, resistance R8
Source, the cathode of the other end connection voltage-stabiliser tube D1 of resistance R8, the other end of the plus earth of voltage-stabiliser tube D1, resistance R8 connect resistance
One end of R5, the other end of resistance R5 are grounded through adjustable resistance R6, the other end of resistance R5 also with integrated transporting discharging comparator 41
Inverting input, which is connected, exports comparison signal.
Above-mentioned reference circuit can generate stable comparison voltage signal, and by adjusting adjustable resistance R6, can be with
The size for effectively adjusting comparison voltage signal, to the sensitivity for adjusting the detector wire with detection of electrical leakage or anti-interference energy
Power.
The iron core 31 of the electromagnetic induction coil 3 including " C " shape and the coil 32 being wrapped on iron core 31, shell 1
Opening is provided with panel 11, and the both ends insertion panel 11 of iron core 31 is simultaneously flushed with the outer end face of panel 11；The iron core 31 is by surpassing
Microcrystallizing alloy is made.
Electromagnetic induction coil 3 is arranged to above-mentioned shape, the both ends convenient for electromagnetic induction coil 3 abut against on metope, energy
The power frequency component that electric wire is sent out within the walls is effectively received, the magnetic property of ultramicro-crystal alloy is good, can effectively acquire power frequency component, prevent
Loss.
The charging circuit includes diode D3 and voltage-stabiliser tube D4, the cathode connecting diode D3's of solar panel 7
Anode, the cathode ground connection of solar panel 7, the cathode of the cathode connection voltage-stabiliser tube D4 of diode D3, the anode of voltage-stabiliser tube D4
Ground connection, the cathode of voltage-stabiliser tube D4 are also connected with the anode of accumulator 6, the cathode ground connection of accumulator 6.
Above-mentioned charging circuit configuration is simple, of low cost.
The open edge of the shell 1 is rounded down 12.
Above structure setting can prevent the open edge of shell 1 from scratching metope.
Finally it should be noted that be：Listed above is only specific embodiment of the utility model, certain this field
Technical staff can be modified to the utility model and modification, if these modifications and variations belong to the utility model right and want
Ask and its equivalent technologies within the scope of, be considered as the scope of protection of the utility model.
Claims (6)
1. a kind of detector wire with detection of electrical leakage, which is characterized in that including hemispherical shell (1), shell (1) it is big
End opening, side of the shell (1) far from its opening are connected through insulating washer (13) with columnar handle (2), the shell (1) and hand
Handle (2) is made of stainless steel material, and electromagnetic induction coil (3) and circuit board (4), circuit board (4) are provided in shell (1)
On be provided with detection circuit；
It is provided with cavity in the handle (2), power supply is provided in cavity, the power supply is accumulator (6), the accumulator
(6) it is that detection circuit is powered, the outer wall of handle (2) is provided with solar panel (7), solar panel (7) warp
Charging circuit charges for accumulator (6)；
The iron core (31) of the electromagnetic induction coil (3) including " C " shape and the coil (32) being wrapped on iron core (31), shell
(1) opening is provided with panel (11), and the both ends insertion panel (11) of iron core (31) is simultaneously flushed with the outer end face of panel (11)；Institute
Iron core (31) is stated to be made of ultramicro-crystal alloy；
The electromagnetic induction coil (3) is parallel with resonant capacitance C1, and electromagnetic induction coil (3) forms resonance with resonant capacitance C1 and returns
Road, the detection circuit include amplifying circuit, and one end of electromagnetic induction coil (3) is connected with the input terminal of amplifying circuit, electromagnetism
The other end of induction coil (3) is grounded, the in-phase input end of the output end connection integrated transporting discharging comparator (41) of amplifying circuit, collection
It is connected with reference circuit, the output end connection instruction of integrated transporting discharging comparator (41) at the inverting input of amplifier comparator (41)
One end of lamp (5), the anode of the other end connection diode D2 of indicator light (5), the cathode ground connection of diode D2；The indicator light
(5) it is arranged in shell (1) or the outer wall of handle (2)；
Further include electric-leakage detection circuit, electric-leakage detection circuit includes neon bulb (9), and one end of neon bulb (9) is connected with shell (1), neon
The other end for steeping (9) is connected by current-limiting resistance and handle (2).
2. the detector wire according to claim 1 with detection of electrical leakage, it is characterised in that：The circuit board (4) is
Circle, circuit board (4) are provided centrally with through-hole, screw are equipped in through-hole,
Circuit board (4) is connect by screw with the inner wall of shell (1).
3. the detector wire according to claim 1 with detection of electrical leakage, it is characterised in that：It further include digital multimeter
(8), the control circuit (82) of the digital multimeter (8) is set in cavity, and display (81) fixation of digital multimeter (8) is set
It is placed in the outer wall of handle (2).
4. the detector wire according to claim 3 with detection of electrical leakage, it is characterised in that：Outside the handle (2)
Wall is provided with the groove of rectangle, and display (81) is fixedly installed in groove.
5. the detector wire according to claim 3 with detection of electrical leakage, it is characterised in that：The handle (2) includes
Pipe (22) and end cap (23), front end and the insulating washer (13) of pipe (22) are connected, and the rear end of pipe (22) is connected with end cap
(23), the side of the end cap (23) is hinged with pipe (22), and the other side is connect with pipe (22) by clamping structure.
6. the detector wire according to claim 5 with detection of electrical leakage, it is characterised in that：The clamping structure includes
The rubber ring (14) of elasticity and the straight pin (15) coordinated with rubber ring (14), pipe (22) rear end axially offers circle
Hole, rubber ring (14) are fixedly installed in circular hole, and straight pin (15) and the front end face of end cap (23) are connected, and straight pin (15) can
It is caught in the endoporus of rubber ring (14) under the effect of external force or is extracted from the endoporus of rubber ring (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721899768.2U CN207851193U (en) | 2017-12-29 | 2017-12-29 | Detector wire with detection of electrical leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721899768.2U CN207851193U (en) | 2017-12-29 | 2017-12-29 | Detector wire with detection of electrical leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207851193U true CN207851193U (en) | 2018-09-11 |
Family
ID=63419899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721899768.2U Expired - Fee Related CN207851193U (en) | 2017-12-29 | 2017-12-29 | Detector wire with detection of electrical leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207851193U (en) |
-
2017
- 2017-12-29 CN CN201721899768.2U patent/CN207851193U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180911 Termination date: 20181229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |