CN102636724B - Portable multi-functional serial crosstalk detector - Google Patents
Portable multi-functional serial crosstalk detector Download PDFInfo
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- CN102636724B CN102636724B CN201210139982.3A CN201210139982A CN102636724B CN 102636724 B CN102636724 B CN 102636724B CN 201210139982 A CN201210139982 A CN 201210139982A CN 102636724 B CN102636724 B CN 102636724B
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- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 23
- 230000005611 electricity Effects 0.000 claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims description 15
- 230000003321 amplification Effects 0.000 claims description 10
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 10
- 238000012795 verification Methods 0.000 claims description 9
- 230000005669 field effect Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract 1
- 230000006698 induction Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The invention relates to a portable multi-functional serial crosstalk detector, which is suitable for detecting a failure of alternating and direct current hybrid junction of a transformer substation. The portable multi-functional serial crosstalk detector comprises a shell and a non-contact electricity testing unit; the non-contact electricity testing unit comprises a pair of electromagnetic induction sheets, an alternating current voltage amplifier, a driving and acousto-optic alarm circuit, a single-pole triple-throw switch SA and a battery E; one end of the pair of electromagnetic induction sheets is connected to an input end of the alternating current voltage amplifier in parallel; an output end of the alternating current voltage amplifier is connected with an input end of the driving and acousto-optic alarm circuit; and the battery E is connected to power ends of the alternating current voltage amplifier and the driving and acousto-optic alarm circuit through the single-pole triple-throw switch SA respectively. The portable multi-functional serial crosstalk detector has the advantages of high sensitivity, easiness for operation, convenience for carrying, accuracy and reliability.
Description
Technical field
The present invention relates to a kind of portable multi-function crosstalk detecting device, be applicable to detect the fault of transformer station's alternating current-direct current hybrid junction.
Background technology
There is the problem of alternating current-direct current hybrid junction in capital construction transformer station; especially 500kV Ultra-high Voltage Substations; secondary cable in protection screen cabinet, terminal box and convergence control cabinet is various; secondary connection on terminal row is close and numerous; checking and accepting task amount before putting into operation is large; and particularly important, slightly the normal power transmission of carelessness impact, brings hidden danger to the stabilization of power grids.Check and process at present the method for alternating current-direct current hybrid junction, utilize secondary drawing, to the figure line inspection, the method time and effort consuming.
While measuring with multimeter, the mixed also existing problems of combined-voltage shelves: (1) alternating voltage shelves are measured DC voltage, voltage table is non-metering or double than actual DC voltage likely, and concrete error size, is that half-wave or all-wave are relevant with rectification in table.In a word, the value of table is nonsensical.(2) shelves of direct voltage is measured alternating voltage, due to frequency, can affect the flutter rate of pointer, and long-time use can cause the damage of multimeter.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of highly sensitive, simple to operate, easy to carry, detecting device of portable multi-function crosstalk accurately and reliably.
The present invention adopts following technical scheme:
The present invention includes housing and non-contact type electricity checking unit; Described non-contact type electricity checking unit comprises a pair of electromagnetic induction sheet, alternating voltage amplifier, driving and sound light alarming circuit, single-pole triple-throw (SPTT) switch S A and battery E; One end of described a pair of electromagnetic induction sheet is attempted by the input end of described alternating voltage amplifier, the output termination driving of described alternating voltage amplifier and the input end of sound light alarming circuit, described battery E is connected on respectively the power end of alternating voltage amplifier and driving and sound light alarming circuit through single-pole triple-throw (SPTT) switch S A.
Described non-contact type electricity checking unit also comprises lighting circuit, and the power end of described lighting circuit meets battery E through single-pole triple-throw (SPTT) switch S A.
Described portable multi-function crosstalk detecting device also comprises contact electrical verification unit, and described contact electrical verification unit comprises that screw blade type sensor, rectification circuit, first to the 3rd amplify optical alarm circuit and pushbutton switch SB;
The input end of the rear termination rectification circuit of the Metallic rod of described screw blade type sensor, the output terminal of described rectification circuit connects respectively the input end of the first to the 3rd amplification optical alarm circuit, and described battery E connects respectively the power end of the first to the 3rd amplification optical alarm circuit through pushbutton switch SB.
Good effect of the present invention is as follows:
(1) the present invention has improved secondary circuit capital construction checking and accepting efficiency greatly, and figure line inspection method is not only facilitated but also saved time more in the past, the most important thing is more accurately more reliable.Whether crosstalk needs 2 people/skies to search in the past a 500kV line switching convergence control cabinet and terminal box, takes after this crosstalk detecting device, needs efficiently to complete 1 people/half a day.Human and material resources and financial resources have greatly been saved.
(2) the present invention also have highly sensitive, easy to operate, easy to carry and feature accurately and reliably.
This detecting device is except checking alternating current-direct current serial connection problem, and it also has following purposes:
(1) can easily judge that whether 60V～220V AC power cord is charged;
(2) measure the height of alternating voltage in certain limit;
(3) the convenient broken positions of measuring wire core.
Accompanying drawing explanation
Accompanying drawing 1 is the principle calcspar (adopting non-contact type electricity checking unit) of the embodiment of the present invention 1.
The circuit theory diagrams that accompanying drawing 2 is Fig. 1.
Accompanying drawing 3 is the principle calcspar of contact electrical verification unit.
The circuit theory diagrams that accompanying drawing 4 is Fig. 3.
Fig. 5 is the front view of housing of the present invention.
Fig. 6 is the rear view of housing of the present invention.
In Fig. 1-6, glass screen cover, 6 pushbutton switches (SB), 7 single-pole triple-throw (SPTT) switches (SA), 8 Self-concentration lighting bulbs (DL), 9 battery case lids, 10 speaker voice giving holes, 11 first light emitting diodes (LED1) of the band of 1 electromagnetic induction sheet, 2 electromagnetic induction sheets, 3 screw blade type sensors, 4 housings, 5 second to the 4th light emitting diode LED2-LED4 numeral printed words.
Embodiment
Embodiment 1(only comprises non-contact type electricity checking unit, referring to Fig. 1, Fig. 2, Fig. 5 and Fig. 6):
The present embodiment comprises housing 4 and non-contact type electricity checking unit; Described non-contact type electricity checking unit comprises a pair of electromagnetic induction sheet 1,2, alternating voltage amplifier, driving and sound light alarming circuit, single-pole triple-throw (SPTT) switch S A and battery E; One end of described a pair of electromagnetic induction sheet 1,2 is attempted by the input end of described alternating voltage amplifier, the output termination driving of described alternating voltage amplifier and the input end of sound light alarming circuit, described battery E is connected on respectively the power end of alternating voltage amplifier and driving and sound light alarming circuit through single-pole triple-throw (SPTT) switch S A.
The structure of described a pair of electromagnetic induction sheet 1,2 is identical, is the copper sheet of 5 * 10 * 0.5mm.
Described alternating voltage amplifier is comprised of N channel field-effect pipe VT1, resistance R 1; That the grid g of described N channel field-effect pipe VT1 connects described a pair of electromagnetic induction sheet 1,2 and connect end, its drain electrode d connects the positive pole of battery E successively through resistance R 1, single-pole triple-throw (SPTT) switch S A, and its source electrode s connects the negative pole of battery E;
Described driving and sound light alarming circuit are comprised of transistor VT2-VT3, resistance R 2-R3, the first LED 1 and loudspeaker HA; The base stage of transistor VT2 meets the drain electrode d of N channel field-effect pipe VT1 through resistance R 1, the collector of transistor VT2 connects the positive pole of battery E through single-pole triple-throw (SPTT) switch S A, the emitter of transistor VT2 connects the base stage of transistor VT3, the emitter of transistor VT3 connects the negative pole of battery E, and the collector of transistor VT3 connects the positive pole of battery E successively through resistance R 3, the first LED 1, loudspeaker HA and single-pole triple-throw (SPTT) switch S A.
Described non-contact type electricity checking unit also comprises lighting circuit, and the power end of described lighting circuit meets battery E through single-pole triple-throw (SPTT) switch S A.
Described lighting circuit is comprised of Self-concentration bulb DL.
Described housing 4 is for falling " T " font, in the both ends of the horizontal arm that is contained in down " T " font housing lower end of described a pair of electromagnetic induction sheet 1,2 symmetries.
The principle of work of embodiment 1 is as follows:
When a pair of electromagnetic induction sheet approaches alternating current-direct current hybrid junction circuit, the alternating magnetic field that alternating voltage produces, act on a pair of electromagnetic induction sheet, be similar to and do cutting magnetic induction line motion, make to produce induction electromotive force on a pair of electromagnetic induction sheet, so just capture ac voltage signal, a pair of electromagnetic induction sheet from electrified body more close to, sensitiveer, and then the induction electromotive force producing is larger.
N channel field-effect pipe VT1 is a kind of voltage controlled element, and its input impedance is higher, as long as the voltage of giving to change at input end grid just can be controlled the variation of output current, 50Hz power-frequency voltage is changed particularly responsive.When a pair of electromagnetic induction sheet does not have induction electromotive force, VT1 is in zero state partially, because VT1 is depletion type, so saturation conduction state all the time between its drain electrode d and source electrode s, the bias voltage that VT2 base stage obtains by R2 is lower than 0.65V, therefore VT2, VT3 are in cut-off state.When a pair of electromagnetic induction sheet senses faint alternating voltage, after VT1 amplifies, the 50Hz ac voltage signal that will amplify from its d output that drains, thus make VT2, VT3 also with constantly conducting of same frequency and cut-off.
When transistor VT3 conducting, order about loudspeaker HA and send continuous sound, and light LED1, remind people to note, a pair of electromagnetic induction sheet place has detected alternating voltage and has existed.
When single-pole triple-throw (SPTT) switch S A switch is got to 1 position, start non-contact electricity testing unit; SA gets to 2 position, in closed condition, and not power consumption of detecting device; When SA gets to 3 position, start lighting loop, both can, at night for short time illumination, can when maintenance electric device, illuminate secondary circuit again.
Embodiment 2(had both comprised non-contact type electricity checking unit, comprised again contact electrical verification unit, saw Fig. 1-6):
It also comprises contact electrical verification unit to embodiment 2 as different from Example 1, and described contact electrical verification unit comprises that screw blade type sensor 3, rectification circuit, first to the 3rd amplify optical alarm circuit and pushbutton switch SB;
The input end of the rear termination rectification circuit of the Metallic rod of described screw blade type sensor 3, the output terminal of described rectification circuit connects respectively the input end of the first to the 3rd amplification optical alarm circuit, and described battery E connects respectively the power end of the first to the 3rd amplification optical alarm circuit through pushbutton switch SB.
Described screw blade type sensor 3 is " one " font or " ten " font screwdriver; The Metallic rod rear end of described screwdriver.
Described first to the 3rd amplifies optical alarm circuit is comprised of transistor VT4-VT6, potentiometer RW1-RW3, resistance R 4-R6, capacitor C 1-C3 and the second to the 4th LED 2-LED4;
The structure of the described first to the 3rd amplification optical alarm circuit is identical, and wherein the first amplification optical alarm circuit is comprised of transistor VT4, potentiometer RW1, resistance R 4, capacitor C 1 and the second LED 2; The base stage of described transistor VT4 connects the negative pole of described commutation diode D through potentiometer RW1, the emitter of described transistor VT4 connects the negative pole of described battery E, and the collector of described transistor VT4 connects the positive pole of described battery E successively through the second LED 2, resistance R 4, pushbutton switch SB;
The base stage of described VT5-VT6 connects respectively the negative pole of described commutation diode through potentiometer RW2, RW3.
Described screw blade type sensor 3 is fixed on down the upper end of " T " font housing.
The principle of work of the contact electrical verification unit in embodiment 2 is as follows:
Be about the straight screwdriver 3 of 55mm, both can be used as screwdriver and have used, be used as again contact probe simultaneously, it can directly contact with electrified body, but housing 4 will guarantee insulation.
After pressing the button switch S B button, screw blade type sensor 3 is contacted with a certain unknown AC power, alternating current is after commutation diode D rectification, and input first to the 3rd is amplified and sound alarm circuit.According to the height of voltage to be measured, adjust the resistance (carrying out under power supply disconnection) of RW1, RW2 and RW3, after debugging, if VT4 conducting, LED2 is bright, voltage≤the 60V that surveys; If VT4～VT5 conducting, LED2～LED3 is bright, and the voltage of surveying is about 110V; If VT4～VT6 conducting, LED2～LED4 is bright, the voltage of surveying be >=220V.
Glass screen cover 5 with digital printed words is according to the size of measuring alternating voltage, shows successively 60V, 110V, tri-numerical value of 220V, when AC signal is less than 60V, only has 60V printed words to light, and a little less than brightness; When AC signal is greater than 220V, 60V, 110V, tri-printed words of 220V are entirely bright, and brightness is stronger.R4～R6 is the current-limiting resistance of LED2-LED4, by current limit in 15-20mA ratings.Capacitor C 1～C3 is anti-tampering electric capacity.The resistance of RW1～RW3, R4-R6 is all debugged in the situation that power supply disconnects.
The present invention can whether it charged measuring apart from tested AC power cord 2cm～15cm place.While using its non-contact electricity testing function, apart from terminal row secondary connection 6cm place, along terminal row, slowly move from top to bottom, when sound and light alarm, illustrate and have alternating voltage herein, now compare again line No.1 whether consistent with drawing, and use the other end of this detecting device, start contact electroscope function, further judge which root cable core is charged and measure with the amplitude of alternating voltage.When detect exchanging, whether direct current during hybrid junction, disconnect each DC loop sky and open, and only closes ac circuit sky and open, such detection effect is better.
With this detecting device, can also detect the broken end position of wire core, as long as pass to 220V voltage to tested core, this detecting device is close by survey line, make loudspeaker sounding, LED 1 luminous, along this line length direction, progressively move again, on one side mobile, check on one side.The place that LED1 extinguishes is exactly the determination portion position of disconnected core.
Claims (1)
1. a portable multi-function crosstalk detecting device, is characterized in that comprising housing (4) and non-contact type electricity checking unit; Described non-contact type electricity checking unit comprises a pair of electromagnetic induction sheet (1,2), alternating voltage amplifier, driving and sound light alarming circuit, single-pole triple-throw (SPTT) switch S A and battery E; One end of described a pair of electromagnetic induction sheet (1,2) is attempted by the input end of described alternating voltage amplifier, the output termination driving of described alternating voltage amplifier and the input end of sound light alarming circuit, described battery E is connected on respectively the power end of alternating voltage amplifier and driving and sound light alarming circuit through single-pole triple-throw (SPTT) switch S A;
The structure of described a pair of electromagnetic induction sheet (1,2) is identical, is the copper sheet of 5 * 10 * 0.5mm;
Described alternating voltage amplifier is comprised of N channel field-effect pipe VT1, resistance R 1; That the grid g of described N channel field-effect pipe VT1 connects described a pair of electromagnetic induction sheet (1,2) and connect end, its drain electrode d connects the positive pole of battery E successively through resistance R 1, single-pole triple-throw (SPTT) switch S A, and its source electrode s connects the negative pole of battery E;
Described driving and sound light alarming circuit are comprised of transistor VT2-VT3, resistance R 2-R3, the first LED 1 and loudspeaker HA; The base stage of transistor VT2 meets the drain electrode d of N channel field-effect pipe VT1 through resistance R 1, the collector of transistor VT2 connects the positive pole of battery E through single-pole triple-throw (SPTT) switch S A, the emitter of transistor VT2 connects the base stage of transistor VT3, the emitter of transistor VT3 connects the negative pole of battery E, and the collector of transistor VT3 connects the positive pole of battery E successively through resistance R 3, the first LED 1, loudspeaker HA and single-pole triple-throw (SPTT) switch S A;
Described non-contact type electricity checking unit also comprises lighting circuit, and the power end of described lighting circuit meets battery E through single-pole triple-throw (SPTT) switch S A;
Described lighting circuit is comprised of Self-concentration bulb DL;
Described housing (4) is for falling " T " font, in the both ends of the horizontal arm that is contained in down " T " font housing lower end that described a pair of electromagnetic induction sheet (1,2) is symmetrical;
Described portable multi-function crosstalk detecting device also comprises contact electrical verification unit, and described contact electrical verification unit comprises that screw blade type sensor (3), rectification circuit, first to the 3rd amplify optical alarm circuit and pushbutton switch SB;
The input end of the rear termination rectification circuit of the Metallic rod of described screw blade type sensor (3), the output terminal of described rectification circuit connects respectively the input end of the first to the 3rd amplification optical alarm circuit, and described battery E connects respectively the power end of the first to the 3rd amplification optical alarm circuit through pushbutton switch SB;
Described screw blade type sensor (3) is " one " font or " ten " font screwdriver;
Described rectification circuit is comprised of commutation diode D; The positive pole of commutation diode D connects the Metallic rod rear end of described screwdriver;
Described first to the 3rd amplifies optical alarm circuit is comprised of transistor VT4-VT6, potentiometer RW1-RW3, resistance R 4-R6, capacitor C 1-C3 and the second to the 4th LED 2-LED4;
The structure of the described first to the 3rd amplification optical alarm circuit is identical, and wherein the first amplification optical alarm circuit is comprised of transistor VT4, potentiometer RW1, resistance R 4, capacitor C 1 and the second LED 2; The base stage of described transistor VT4 connects the negative pole of described commutation diode D through potentiometer RW1, the emitter of described transistor VT4 connects the negative pole of described battery E, and the collector of described transistor VT4 connects the positive pole of described battery E successively through the second LED 2, resistance R 4, pushbutton switch SB;
The base stage of described VT5-VT6 connects respectively the negative pole of described commutation diode through potentiometer RW2, RW3;
Described screw blade type sensor (3) is fixed on down the upper end of " T " font housing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210139982.3A CN102636724B (en) | 2012-05-08 | 2012-05-08 | Portable multi-functional serial crosstalk detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210139982.3A CN102636724B (en) | 2012-05-08 | 2012-05-08 | Portable multi-functional serial crosstalk detector |
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| CN102636724A CN102636724A (en) | 2012-08-15 |
| CN102636724B true CN102636724B (en) | 2014-08-13 |
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| CN201210139982.3A Active CN102636724B (en) | 2012-05-08 | 2012-05-08 | Portable multi-functional serial crosstalk detector |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323655B (en) * | 2013-06-08 | 2015-04-29 | 国家电网公司 | Non-contact alternating current and direct current crosstalk online detecting device and non-contact alternating current and direct current crosstalk online detecting method |
| CN105116352B (en) * | 2015-09-01 | 2018-06-26 | 国网辽宁省电力有限公司鞍山供电公司 | The double set DC power system string electro-detection methods of substation |
| CN105595498A (en) * | 2016-02-19 | 2016-05-25 | 武汉华星光电技术有限公司 | Safety helmet having warning function |
| CN108858014B (en) * | 2018-07-20 | 2020-10-20 | 宁波市鸿博百捷自动化设备有限公司 | Manual universal screwdriver |
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|---|---|---|---|---|
| CN2132996Y (en) * | 1992-07-31 | 1993-05-12 | 赵明军 | Multifunction base check apparatus |
| CN2169856Y (en) * | 1993-09-25 | 1994-06-22 | 郭科林 | Multi-purpose electronic power measuring tool |
| EP0827266A2 (en) * | 1996-08-29 | 1998-03-04 | Mitsubishi Denki Kabushiki Kaisha | High-side type motor current detecting circuit |
| CN202693714U (en) * | 2012-05-08 | 2013-01-23 | 国家电网公司 | Portable multifunctional electricity mixing detector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10160764A (en) * | 1996-11-27 | 1998-06-19 | Yokogawa Electric Corp | Input circuit for insulating-voltage measuring apparatus |
| JP2009183038A (en) * | 2008-01-30 | 2009-08-13 | Fujitsu General Ltd | Power supply device and equipment provided therewith |
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2012
- 2012-05-08 CN CN201210139982.3A patent/CN102636724B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2132996Y (en) * | 1992-07-31 | 1993-05-12 | 赵明军 | Multifunction base check apparatus |
| CN2169856Y (en) * | 1993-09-25 | 1994-06-22 | 郭科林 | Multi-purpose electronic power measuring tool |
| EP0827266A2 (en) * | 1996-08-29 | 1998-03-04 | Mitsubishi Denki Kabushiki Kaisha | High-side type motor current detecting circuit |
| CN202693714U (en) * | 2012-05-08 | 2013-01-23 | 国家电网公司 | Portable multifunctional electricity mixing detector |
Non-Patent Citations (2)
| Title |
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| JP特开2009-183038A 2009.08.13 |
| JP特开平10-160764A 1998.06.19 |
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Owner name: THE MAINTENANCE BRANCH OF HEBEI ELECTRIC POWER COR Effective date: 20121213 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: HEBEI POWER COMPANY ULTRA-HV TRANSMISSION + DISTRIBUTION COMPANY Effective date: 20121213 |
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