CN104749455A - Circuit or electric appliance detecting/monitoring device - Google Patents
Circuit or electric appliance detecting/monitoring device Download PDFInfo
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- CN104749455A CN104749455A CN201310745387.9A CN201310745387A CN104749455A CN 104749455 A CN104749455 A CN 104749455A CN 201310745387 A CN201310745387 A CN 201310745387A CN 104749455 A CN104749455 A CN 104749455A
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Abstract
The invention provides a circuit or electric appliance detecting/monitoring device. The device comprises a manual phase line detection circuit, a power supply circuit, an equipment ground wire ground-resistance and electric-leakage switch detection circuit, a manual ground wire detection circuit, an automatic ground wire detecting/monitoring circuit, a manual null line detection circuit, an automatic null line detecting/monitoring circuit and a warning circuit; the power supply circuit supplies power for the whole device, and then the power supply circuit and an electric appliance used in the circuit can be detected and monitored by use of the equipment ground wire ground-resistance and electric-leakage switch detection circuit, the automatic ground wire detecting/monitoring circuit and the automatic null line detecting/monitoring circuit; when the power supply environment or the power utilization environment is abnormal, sound is generated to remind people of cutting off the power supply or avoiding contact with the appliance; the warning circuit sends out warning information; the device belongs to the technical field of electronic application. The circuit or electric appliance detecting/monitoring device is used for reminding people of cutting off the power supply or avoiding contact with the appliance in a warning manner.
Description
Technical field
The present invention relates to a kind of detection or monitoring device, particularly a kind of circuit or Electrical Testing, monitoring device.
Background technology
Along with the develop rapidly of industry, constantly new electronic equipment is there is in all trades and professions, and the electron detection device of its correspondence or detecting instrument are need professional safeguard it and use mostly, but in the middle of practical work, general maintainer is mostly just regular safeguards it, under normal circumstances, general is all that some users or Interim use person do shirtsleeve operation to it, particularly relate to the equipment being in production line water operation inside some factories, its price is costly mostly, once because of environment or power utilization environment exception that production line is powered, this equipment all likely can be caused to paralyse or thoroughly scrap.
Moreover, for some general small companies, engage the consumer of maintenance electrician's service companies of some specialties and circuit thereof also and unrealistic, and once there is power supply environment or power utilization environment extremely, and cause company local or whole office equipment or instrument paralysis or scrap and even involve Zheng Dong mansion.
Specifically in all parts of the country every year because of power supply environment and power utilization environment lack of standardization, cause the phenomenons such as human electric shock, fire failure and device damage to emerge in an endless stream.For avoiding similar accident to occur, people must understand and detect and monitor the power supply environment of environment residing for self and power utilization environment whether safety.
Summary of the invention
The object of the invention is to be to solve non-professional electrician personnel to the power supply environment of residing circuit and the whether normal a kind of simple and convenient detection of power utilization environment and monitoring, and a kind of circuit or Electrical Testing, monitoring device are provided.
The present invention to achieve these goals and adopt technical scheme be: a kind of circuit or Electrical Testing, monitoring device, described device comprises:
Power circuit: the normally opened contact SB1-1 comprising power supply phase line plug XPL1, fuse FU1 and interlock keyswitch SB1, the normally opened contact SB1-2 of zero-power line plug XPN1, zero line checkout button SBTN and interlock keyswitch SB1, be connected to voltage table PV and transformer TR, the rectifier stack UR of interlock keyswitch SB1 normally opened contact SB1-1 and SB1-2, the normally opened contact SB2-2 of power ground plug XPPE1, ground wire checkout button SBTPE and interlock keyswitch SB2, for device provides interchange or DC loop power supply.
The ground wire grounded resistance of equipment and leakage switch testing circuit: comprise power circuit and relay K 1 coil in parallel with power circuit transformer TR input end, power circuit rectifier stack UR positive pole and test socket XS2 are connected in series with fuse FU2, relay K 2 coil, normally opened contact K1-1, the DC ammeter PA1 of relay K 1, the normally closed contact SB2-1 of the keyswitch SB2 that links between hole.The normally opened contact SB2-2 of the keyswitch SB2 that links, ground wire checkout button SBTPE is connected in series with between another branch road: DC ammeter PA1 and power ground plug XPPE1.Power circuit rectifier stack UR negative pole connects the left hole of test socket XS2, right hole and detection line socket XS1, detection line plug XP1, detection line clip JZ respectively.Be connected in parallel on the normally closed contact SB3-1 that relay K 1 coil two ends are connected with relay K 2 normally opened contact K2-1, dimmer switch TG, electrical appliance E, alternating current ammeter PA2 and interlock keyswitch SB3.Another branch road: be connected in series with the normally opened contact SB3-2 of the keyswitch SB3 that links between alternating current ammeter PA2 and power ground plug XPPE1, the normally opened contact SB2-3 of the keyswitch SB2 that links, ground wire pick up and test button SBTPE.Specifically: the ground wire grounded resistance of equipment and leakage switch testing circuit: include again device internal detection circuitry, equipment Inspection circuit, ground wire grounded resistance detecting circuit and leakage switch testing circuit four kinds respectively, wherein:
Device internal detection circuitry: comprise power circuit and relay K 1 coil in parallel with power circuit transformer TR input end, power circuit rectifier stack UR positive pole and test socket XS2 are connected in series with between hole fuse FU2, relay K 2 coil, relay K 1 normally opened contact K1-1, DC ammeter PA1, link keyswitch SB2 normally closed contact SB2-1.Detection line socket XS1, detection line plug XP1 is connected in series with between power circuit rectifier stack UR negative pole and detection line clip ZJ; Be connected in parallel on the normally closed contact SB3-1 that relay K 1 coil two ends are connected with relay K 2 normally opened contact K2-1, dimmer switch TG, electrical appliance E, alternating current ammeter PA2 and interlock keyswitch SB3;
Equipment Inspection circuit: comprise power circuit and relay K 1 coil in parallel with power circuit transformer TR input end, power circuit rectifier stack UR positive pole and test socket XS2 are connected in series with between hole fuse FU2, relay K 2 coil, relay K 1 normally opened contact K1-1, DC ammeter PA1, link keyswitch SB2 normally closed contact SB2-1.Power circuit rectifier stack UR negative pole connects left hole, the right hole of test socket XS2 respectively and connects detection line socket XS1, detection line plug XP1, detection line clip JZ;
Ground wire grounded resistance detecting circuit: comprise power circuit and relay K 1 coil in parallel with power circuit transformer TR input end, be connected in series with between power circuit rectifier stack UR positive pole and power ground plug XPPE1 fuse FU2, relay K 2 coil, relay K 1 normally opened contact K1-1, DC ammeter PA1, link keyswitch SB2 normally opened contact SB2-2, ground wire checkout button SBTPE.Detection line socket XS1, detection line plug XP1 is connected in series with between power circuit rectifier stack UR negative pole and detection line clip JZ;
Leakage switch testing circuit: comprise power circuit and relay K 1 coil in parallel with power circuit transformer TR input end, be connected in series with between power circuit rectifier stack UR positive pole and power ground plug XPPE1 fuse FU2, relay K 2 coil, relay K 1 normally opened contact K1-1, DC ammeter PA1, link keyswitch SB2 normally opened contact SB2-2, ground wire checkout button SBTPE.Detection line socket XS1, detection line plug XP1 is connected in series with between power circuit rectifier stack UR negative pole and detection line clip JZ; Be connected in series with relay K 2 normally opened contact K2-1, dimmer switch TG, electrically E, alternating current ammeter PA2, the keyswitch SB3 normally opened contact SB3-2 that links between interlock keyswitch SB1 normally opened contact SB1-1 and power ground plug XPPE1, link keyswitch SB2 normally opened contact SB2-3, ground wire checkout button SBTPE.
Ground wire detects/observation circuit automatically: power supply phase line plug XPL1, fuse FU1 by the other end of sensing device GY2 connecting resistance R9, resistance R9 connect respectively ground wire checkout button SBTPE, power ground plug XPPE1 and and grounding wafer PEJ between be serially connected with resistance R5, resistance R6 and LED 5;
Zero line detects/observation circuit automatically: power supply phase line plug XPL1, fuse FU1 by the other end of sensing device GY1 connecting resistance R8, resistance R8 connect respectively zero line checkout button SBTN, zero-power line plug XPN1 and and grounding wafer NJ between be serially connected with resistance R3, resistance R4 and LED 4;
Warning circuit: comprise and automatically detect/photoresistance the RL1 that controls of the LED 4 of observation circuit and automatically detect/photoresistance the RL2 that controls of the LED 5 of observation circuit by ground wire by zero line, and be subject to the warning circuit of this photoresistance RL1 and photoresistance RL2, this warning circuit also comprises: for main control chip OTP20-08 and the external sound-controlled apparatus of signal conversion, what described external sound-controlled apparatus adopted in this programme is loudspeaker, certainly display can also be provided with, warning message is shown by display, this warning circuit is from being provided with fixing independent current source simultaneously, moreover the resistance R1 and electric capacity C1 that are connected in parallel is provided with at the signal input part PIN1 place of main control chip OTP20-08, be provided with at the signal input part PIN2 place of main control chip OTP20-08 the resistance R2 and electric capacity C2 that are connected in parallel simultaneously, and between output terminal PIN5 and the PIN7 of main control chip OTP20-08, being provided with electric capacity C3, the two ends of electric capacity C3 are connected with input end and the output terminal of the power supply of warning circuit simultaneously, are provided with loudspeaker B between PIN6 and PIN8.
Further, be also provided with the manual testing circuit of phase line, the manual testing circuit of described phase line is made up of grounding wafer LP, resistance R7 and LED 1, is serially connected with resistance R7 and LED 1 between power supply phase line plug XPL1 and grounding wafer LP.
Further, be also provided with the manual testing circuit of ground wire, the manual testing circuit of described ground wire is made up of grounding wafer PEP, resistance R11 and LED 3, is serially connected with resistance R11 and LED 3 between resistance R9 and grounding wafer PEP.
Further, be also provided with the manual testing circuit of zero line, the manual testing circuit of described zero line is made up of grounding wafer NP, resistance R10 and LED 2, is serially connected with resistance R10 and LED 2 between resistance R8 and grounding wafer NP.
Further, described power supply phase line plug XPL1 and circuit connecting end (place) are provided with fuse FU1.
Further, be provided with between described resistance R5 and ground wire plug XPPE1 and automatically detect/ground wire checkout button the SBTPE of observation circuit for disconnecting ground wire.
Further, be provided with between described resistance R3 and zero line plug XPN1 and automatically detect/zero line checkout button the SBTN of observation circuit for disconnecting zero line.
Further, described zero line automatically detect/LED of observation circuit 4 is packaged as a whole with the photoresistance RL1 controlled by this LED 4.
Further, described ground wire automatically detect/LED of observation circuit 5 is packaged as a whole with the photoresistance RL2 controlled by this LED 5.
The beneficial effect of employing technique scheme is: first, device described in this programme is applicable to 380V/220 and following power supply environment and power utilization environment (factory, hotel, restaurant, office building, public place, residential quarter etc.), promptly and accurately fast can play detection and monitoring effect to the power utilization environment residing for consumer or instrument, when power supply environment or power utilization environment occur abnormal, and by the form of audio alert, warning people are by power-off or avoid contact arrangement, timely prompting operating personnel or user, and then omnibearing detection and monitoring effect can be played to residing partial electric grid and consumer.
Accompanying drawing explanation
Fig. 1 is the theory diagram of patent of the present invention;
Fig. 2 is the circuit diagram of patent of the present invention.
Embodiment
Below in conjunction with accompanying drawing and the preferred specific embodiment of the present invention, content of the present invention is further described.Illustrated embodiment, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Fig. 1 to Fig. 2, the present invention includes: the manual testing circuit of phase line, power circuit, the ground wire grounded resistance of equipment and leakage switch testing circuit, the manual testing circuit of zero line, zero line detect/observation circuit automatically, the manual testing circuit of ground wire, ground wire detect automatically/observation circuit and warning circuit:
Described power circuit: the normally opened contact SB1-1 comprising power supply phase line plug XPL1, fuse FU1 and interlock keyswitch SB1, the normally opened contact SB1-2 of zero-power line plug XPN1, zero line checkout button SBTN and interlock keyswitch SB1, be connected to voltage table PV and transformer TR, the rectifier stack UR of interlock keyswitch SB1 normally opened contact SB1-1 and SB1-2, the normally opened contact SB2-2 of power ground plug XPPE1, ground wire checkout button SBTPE and interlock keyswitch SB2, for device provides interchange or DC loop power supply.That in this programme, said transformer TR adopts is 220V/12V, provides 12V voltage to rectifier stack UR, is mainly the device described in this programme and provides direct supply.
The ground wire grounded resistance of described equipment and leakage switch testing circuit, comprise again device internal detection circuitry, equipment Inspection circuit, ground wire grounded resistance detecting circuit and leakage switch testing circuit four kinds.Wherein:
Device internal detection circuitry: comprise power circuit and relay K 1 coil in parallel with power circuit transformer TR input end, power circuit rectifier stack UR positive pole and test socket XS2 are connected in series with between hole fuse FU2, relay K 2 coil, relay K 1 normally opened contact K1-1, DC ammeter PA1, link keyswitch SB2 normally closed contact SB2-1.Detection line socket XS1, detection line plug XP1 is connected in series with between power circuit rectifier stack UR negative pole and detection line clip ZJ; Be connected in parallel on the normally closed contact SB3-1 that relay K 1 coil two ends are connected with relay K 2 normally opened contact K2-1, dimmer switch TG, electrical appliance E, alternating current ammeter PA2 and interlock keyswitch SB3.
Above-mentioned device internal detection circuitry is mainly for detection of relay K 2 coil DC current with for detecting electrical equipment E alternating current.
Concrete operation step and principle of work: installation's power source plug is inserted in normal supply socket, inspection line plug XP1 inserts inspection line socket XS1, inspection harness clip ZJ clamps hole on inspection socket XS2, presses interlock keyswitch SB1, interlock keyswitch SB1 normally opened contact SB1-1, SB1-2 connects, and installation's power source is connected, relay K 1 coil energized action, and relay K 1 normally opened contact K1-1 closes, and relay K 2 wire loop is connected, power circuit rectifier stack UR positive best fuse FU2, relay K 2 coil, the normally opened contact K1-1 of relay K 1, DC ammeter PA1, interlock keyswitch SB2 normally closed contact SB2-1, hole on test socket XS2, detection line clip ZJ, detection line plug XP1, detection line socket XS1 and power circuit rectifier stack UR negative pole form loop, relay K 2 coil energized action, and relay K 2 normally opened contact K2-1 closes, and electric E loop is connected, and power supply is from phase line to relay K 2 normally opened contact K2-1, dimmer switch TG, electrical appliance E, alternating current ammeter PA2, normally closed contact SB3-1 and the zero line of interlock keyswitch SB3 form loop, and electrical equipment E is bright.Now, the electric current of DC ammeter PA1 display is relay K 2 coil DC current, and the electric current that alternating current ammeter PA2 shows is electrical equipment E alternating current, and records respectively.Illustrate: device internal detection circuitry, main detection relay K 2 coil DC current, device inside the relay K 2 coil DC current detected and the relay K 2 coil DC current contrast detecting the grounding body stake resistance that ground wire is connected, can judge that whether the grounding body stake resistance that ground wire connects is normal.And detecting electrical equipment E alternating current, the alternating current detecting electrical equipment E is equal with leakage switch set action current value or slightly bigger.
Equipment Inspection circuit: comprise power circuit and relay K 1 coil in parallel with power circuit transformer TR input end, power circuit rectifier stack UR positive pole and test socket XS2 are connected in series with between hole fuse FU2, relay K 2 coil, relay K 1 normally opened contact K1-1, DC ammeter PA1, link keyswitch SB2 normally closed contact SB2-1.Power circuit rectifier stack UR negative pole connects left hole, the right hole of test socket XS2 respectively and connects detection line socket XS1, detection line plug XP1, detection line clip JZ.
Above-mentioned equipment Inspection circuit is mainly for detection of the whether direct short-circuit of the phase line of single-phase three-wire consumer, zero line, electric elements and ground wire, metal shell.
Concrete operation step and principle of work: installation's power source plug is inserted in normal supply socket, the single-phase three-wire consumer attaching plug insertion apparatus test socket XS2 that will detect, press interlock keyswitch SB1, interlock keyswitch SB1 normally opened contact SB1-1, SB1-2 connects, and installation's power source is connected, relay K 1 coil energized action, and relay K 1 normally opened contact K1-1 closes, and relay K 2 wire loop is obstructed, power circuit rectifier stack UR positive best fuse FU2, relay K 2 coil, the normally opened contact K1-1 of relay K 1, DC ammeter PA1, interlock keyswitch SB2 normally closed contact SB2-1, hole on test socket XS2, detected equipment ground wire plug, equipment ground wire, equipment metal shell and detected equipment electric elements, phase line, zero line, phase line plug and zero line plug, test socket XS2 left hole and right hole and power circuit rectifier stack UR negative loop obstructed, relay K 2 coil is failure to actuate, and reometer PA1 no current shows, the phase line of consumer, zero line, electric elements and ground wire, metal shell does not have direct short-circuit.Otherwise it is abnormal.
Whether ground wire to the metal shell connected mainly for detection of the ground wire latch of single-phase three-wire consumer three-pin plug connects.
Concrete operation step and principle of work: installation's power source plug is inserted in normal supply socket, the single-phase three-wire consumer attaching plug insertion apparatus test socket XS2 that will detect, inspection line plug XP1 inserts inspection line socket XS1, and inspection harness clip JZ clamps equipment metal shell.Press interlock keyswitch SB1, interlock keyswitch SB1 normally opened contact SB1-1, SB1-2 connects, installation's power source is connected, relay K 1 coil energized action, relay K 1 normally opened contact K1-1 closes, relay K 2 wire loop is connected, power circuit rectifier stack UR positive best fuse FU2, relay K 2 coil, the normally opened contact K1-1 of relay K 1, DC ammeter PA1, interlock keyswitch SB2 normally closed contact SB2-1, hole on test socket XS2, detected equipment ground wire plug, equipment ground wire, equipment metal shell, inspection harness clip JZ, inspection line plug XP1, inspection line socket XS1 and power circuit rectifier stack UR negative loop are connected, relay K 2 coil energized action, reometer PA1 shows electric current, ground wire to the metal shell that the ground wire latch of consumer three-pin plug connects connects normal.Otherwise it is abnormal.
Ground wire grounded resistance detecting circuit: comprise power circuit and relay K 1 coil in parallel with power circuit transformer TR input end, be connected in series with between power circuit rectifier stack UR positive pole and power ground plug XPPE1 fuse FU2, relay K 2 coil, relay K 1 normally opened contact K1-1, DC ammeter PA1, link keyswitch SB2 normally opened contact SB2-2, ground wire checkout button SBTPE.Detection line socket XS1, detection line plug XP1 is connected in series with between power circuit rectifier stack UR negative pole and detection line clip JZ.
Whether the grounding body stake resistance connected mainly for detection of hole ground wire on power supply Three-hole socket is normal.Concrete operation step and the principle of work of concrete operation step and principle of work and leakage switch testing circuit are below consistent (relay K 2 wire loop first works, and this part are identical, works this part for leakage switch checking circuit behind electrical appliance E loop).
Leakage switch testing circuit: comprise power circuit and relay K 1 coil in parallel with power circuit transformer TR input end, be connected in series with between power circuit rectifier stack UR positive pole and power ground plug XPPE1 fuse FU2, relay K 2 coil, relay K 1 normally opened contact K1-1, DC ammeter PA1, link keyswitch SB2 normally opened contact SB2-2, ground wire checkout button SBTPE.Detection line socket XS1, detection line plug XP1 is connected in series with between power circuit rectifier stack UR negative pole and detection line clip JZ; Be connected in series with relay K 2 normally opened contact K2-1, dimmer switch TG, electrical equipment E, alternating current ammeter PA2 between interlock keyswitch SB1 normally opened contact SB1-1 and power ground plug XPPE1, the keyswitch SB3 normally opened contact SB3-2 that links, link keyswitch SB2 normally opened contact SB2-3, ground wire checkout button SBTPE.
Mainly for detection of the supply socket controlled by leakage switch, when the equipment simulating electric leakage on socket, when Leakage Current is equal to or slightly greater than leakage switch set action value, detects leakage switch and whether trip.And ground wire grounded resistance detecting circuit and leakage switch testing circuit concrete operation step and principle of work are consistent (relay K 2 wire loop first works, and this part are identical, works this part for leakage switch checking circuit behind electrical appliance E loop).
Concrete operation step and principle of work: installation's power source plug is inserted on the power supply Three-hole socket that will detect, determine that jack connector is normal, power supply is normal, and test wire clip JZ is connected with water pipe (also can select metallic water pipe, metal blow-off pipe, metal fire extinguisher canvas hose, lightning conductions etc. are connected closely with the earth and in the very low metal object of stake resistance or certainly do grounding body, the metal object stake resistance that guarantee detection line clip JZ connects is normal), detection line plug XP1 inserts detection line socket SX1, presses interlock keyswitch SB1, interlock keyswitch SB1 normally opened contact SB1-1, SB1-2 connects, and installation's power source is connected, relay K 1 coil energized action, and relay K 1 normally opened contact K1-1 closes, then presses interlock keyswitch SB2, interlock keyswitch normally opened contact SB2-2, SB2-3 connects, relay K 2 wire loop is connected, power circuit rectifier stack UR positive best fuse FU2, relay K 2 coil, the normally opened contact K1-1 of relay K 1, DC ammeter PA1, interlock keyswitch SB2 normally opened contact SB2-2, ground wire checkout button SBTPE, power ground plug XPPE1, power ground socket XSPE1, ground wire, grounding body, greatly, metallic water pipe grounding body, metallic water pipe, detection line clip JZ, detection line plug XP1, detection line socket XS1 returns power circuit rectifier stack UR negative pole.Relay K 2 wire loop is connected, relay K 2 coil energized action, relay K 2 normally opened contact K2-1 closes, electric E loop is connected, now, the electric current of DC ammeter PA1 display is relay K 2 coil DC current, and records and contrast with device internal measurement relay K 2 coil current, if institute more inner than device surveys the few 3mA of electric current, the grounding body stake resistance of ground wire connection is normal.If institute more inner than device surveys few more than the 3mA of electric current, but relay K 2 coil reaches starting current again, the grounding body stake resistance of ground wire connection increases a little, if relay K 2 coil does not reach starting current, and the grounding body stake resistance increase of ground wire connection.Connect above-mentioned electric E loop to connect, continue operation: press interlock keyswitch SB3, the normally opened contact SB3-2 of interlock keyswitch SB3 closes, power supply is from phase line to the normally opened contact SB1-1 of interlock keyswitch SB1, relay K 2 normally opened contact K2-1, dimmer switch TG, electrical appliance E, alternating current ammeter PA2, the normally opened contact SB3-2 of interlock keyswitch SB3, the normally opened contact SB2-3 of interlock keyswitch SB2, ground wire checkout button SBTPE, power ground plug XPPE1, power ground socket XSPE1, ground wire, grounding body, the earth returns power end zero point (if hole adopts protection zero line in supply socket, electric current directly returns power end from protection zero line).As electric leakage switch tripping, supply socket connection leakage switch is normal, and leakage switch is normal, otherwise abnormal.
Integration unit internal detection circuitry; Equipment Inspection circuit; Ground wire grounded resistance detecting circuit; Described in leakage switch testing circuit etc., only have after the grounding body stake resistance of ground wire connection is normal, relay K 2 coil just can reach starting current, relay K 2 normally opened contact K2-1 closes, leakage switch testing circuit loop could be connected, relay K 2 coil DC current, whether the grounding body stake resistance mainly detecting ground wire connection is normal.When detecting the grounding body stake resistance of ground wire connection, advanced luggage is put internal detection circuitry and is detected, and relay K 2 coil current numerical value, records from reometer PA1.When then detecting the grounding body stake resistance of ground wire connection, relay K 2 coil current numerical value, record from reometer PA1, relay K 2 coil current then detected with device internal detection circuitry again contrasts again, and just can judge that whether the grounding body stake resistance that ground wire connects is normal.If institute more inner than device surveys the few 3mA of electric current, the grounding body stake resistance of ground wire connection is normal.If institute more inner than device surveys few more than the 3mA of electric current, but relay K 2 coil reaches starting current again, the grounding body stake resistance of ground wire connection increases a little, if relay K 2 coil does not reach starting current, and the grounding body stake resistance increase of ground wire connection.
Further, in the specific implementation, dimmer switch TG selects voltage to be 20V and following, and electric current is the dimmer switch of 32mA and following specification, and electrical appliance E selects conventional bulb, its rated voltage is 220V power is 40W, when 220V alternating current is after the bidirectional triode thyristor of dimmer switch TG changes voltage turn-on angle, electric current and voltage reduces, and object reduces the loop voltage of electrical appliance, electric current enters the earth through ground wire, and whether inspection leakage switch trips; Specifically, whether electrical appliance E alternating current, mainly detect leakage switch and trip, specific as follows:
First, the grounding body stake resistance connected when ground wire increases or when seriously increasing, relay K 2 coil starting current reduces, and relay K 2 is failure to actuate, and relay normally open contact K2-1 disconnects leakage switch testing circuit.Guarantee ground wire safety.Whether secondly, the grounding body stake resistance connected when ground wire increases a little, but reaches relay K 2 coil starting current, the actuating of relay, and relay normally open contact K2-1 connects leakage switch testing circuit, detect leakage switch and trip.
Moreover when the grounding body stake resistance that ground wire connects is normal, reach relay K 2 coil starting current, relay K 2 action, relay normally open contact K2-1 connects leakage switch testing circuit, detect leakage switch and whether trip.
Described ground wire detects/observation circuit automatically, power supply phase line plug XPL1, fuse FU1 by the other end of sensing device GY2 connecting resistance R9, resistance R9 connect respectively ground wire checkout button SBTPE, power ground plug XPPE1 and and grounding wafer PEJ between be serially connected with resistance R5, resistance R6 and LED 5.
Mainly for detection of or monitoring socket on hole protection ground wire (protection zero line) charged alarm, also can be used for detecting or on monitoring socket, open a way alarm in hole protection ground wire (protection zero line) simultaneously.
Concrete operation step and principle of work: first, insert installation's power source plug on the power supply Three-hole socket that will detect or monitor; When ground strip powers on pressure.Voltage is through power ground plug XPPE1, ground wire checkout button SBTPE, resistance R5, resistance R6, light emitting diode LED5, grounding wafer PEJ, greatly.Weak current flows through light emitting diode LED5, and photoresistance RL2 is irradiated in light emitting diode LED5 luminescence, and photoresistance RL2 resistance reduces at once, to electric signal speech chip, and speech chip routine processes, then sound to electric signal loudspeaker B.
And when the grounding body stake resistance that the ground wire of power ground jack XSPE1 connects seriously increase or ground wire section open circuit time, first, after phase line open-circuit, ground wire produces induced voltage, and ground wire induced voltage is through power ground plug XPPE1, ground wire checkout button SBTPE, resistance R5, resistance R6, light emitting diode LED5, grounding wafer PEJ, greatly; Secondly, sensing device GY2 secondary senses voltage, and sensing device GY2 secondary induced voltage is through resistance R9, resistance R5, resistance R6, light emitting diode LED5, grounding wafer PEJ, greatly.Weak current flows through light emitting diode LED5, and photoresistance RL2 is irradiated in light emitting diode LED5 luminescence, and photoresistance RL2 resistance reduces at once, to electric signal speech chip, and speech chip routine processes, then sound to electric signal loudspeaker B.
Described zero line detects/observation circuit automatically, power supply phase line plug XPL1, fuse FU1 by the other end of sensing device GY1 connecting resistance R8, resistance R8 connect respectively zero line checkout button SBTN, zero-power line plug XPN1 and and grounding wafer NJ between be serially connected with resistance R3, resistance R4 and LED 4.
Mainly for detection of or the charged alarm of monitoring socket left hole zero line, also can be used for simultaneously detect or monitoring socket left hole zero-line open-circuit alarm.
Concrete operation step and principle of work: installation's power source plug is inserted on the power supply Three-hole socket that will detect or monitor; When on zero line band during voltage.Voltage is through zero-power line plug XPN1, zero line checkout button SBTN, resistance R3, resistance R4, light emitting diode LED4, grounding wafer NJ, greatly.Weak current flows through light emitting diode LED4, and photoresistance RL1 is irradiated in light emitting diode LED4 luminescence, and light emitting diode RL1 resistance reduces at once, to electric signal speech chip, and speech chip routine processes, then sound to electric signal loudspeaker; And when the zero line of zero-power line jack XSN1 is to power end section zero-line open-circuit, first, after phase line open-circuit, zero line produces induced voltage, and zero line induced voltage is through zero-power line plug XPN1, zero line checkout button SBTN, resistance R3, resistance R4, light emitting diode LED4, grounding wafer NJ, greatly; Secondly, sensing device GY1 secondary senses voltage, and sensing device GY1 secondary induced voltage is through resistance R8, resistance R3, resistance R4, light emitting diode LED4, grounding wafer NJ, greatly.Weak current flows through light emitting diode LED4, and photoresistance RL1 is irradiated in light emitting diode LED4 luminescence, and RL1 resistance reduces at once, to electric signal speech chip, and speech chip routine processes, then sound to electric signal loudspeaker.
Described warning circuit, comprise and automatically detect/photoresistance the RL1 that controls of the LED 4 of observation circuit and automatically detect/photoresistance the RL2 that controls of the LED 5 of observation circuit by ground wire by zero line, and be subject to the warning circuit of this photoresistance RL1 and photoresistance RL2, this warning circuit also comprises: for main control chip OTP20-08 and the external sound-controlled apparatus of signal conversion, what described external sound-controlled apparatus adopted in this programme is loudspeaker, certainly display can also be provided with, warning message is shown by display, this warning circuit is from being provided with fixing independent current source simultaneously, moreover the resistance R1 and electric capacity C1 that are connected in parallel is provided with at the signal input part PIN1 place of main control chip OTP20-08, be provided with at the signal input part PIN2 place of main control chip OTP20-08 the resistance R2 and electric capacity C2 that are connected in parallel simultaneously, and between output terminal PIN5 and the PIN7 of main control chip OTP20-08, being provided with electric capacity C3, the two ends of electric capacity C3 are connected with input end and the output terminal of the power supply of warning circuit simultaneously, are provided with loudspeaker B between PIN6 and PIN8.
For better can automatically detect/observation circuit to the ground wire in the device described in this programme, zero line detects automatically/observation circuit and phase alignment circuit carry out real-time interim inspection and detection, and then be respectively equipped with the manual testing circuit of phase line, the manual testing circuit of ground wire and the manual testing circuit of zero line.
And the manual testing circuit of described phase line is made up of grounding wafer LP, resistance R7 and LED 1, between power supply phase line plug XPL1 and grounding wafer LP, be serially connected with resistance R7 and LED 1.
When for manually detect supply socket right hole whether have voltage and voltage whether normal time.
Concrete operation step and principle of work as follows:
First, installation's power source plug is inserted on the power supply Three-hole socket that will detect, hand touches grounding wafer LP, weak current is through resistance R7, LED 1, grounding wafer LP, human body, greatly, and weak current flows through LED 1 and luminous, and supply socket right hole has voltage.Press interlock keyswitch SB1, interlock keyswitch normally opened contact SB1-1, SB1-2 connect, if it is in+7% ,-10% scope of 220V that voltage table PV shows voltage, supply socket left hole zero line, right hole phase terminal are normal, and supply voltage is normal, otherwise abnormal.
When being mainly used in manual test socket right hole phase line and whether controlling by leakage switch.
Concrete operation step and principle of work as follows:
When according to manually detect supply socket right hole whether have voltage and voltage whether normal after, after determining that socket right hole voltage is normal, close leakage switch LK, hand touches grounding wafer LP, if LED 1 does not work, leakage switch LK has controlled to supply socket right hole phase line, belongs to normal, otherwise abnormal.
When being mainly used in manual test socket right hole phase line and whether being subject to breaker control.
When according to manually detect supply socket right hole whether have voltage and voltage whether normal after, after determining that socket right hole voltage is normal, shutdown device QF, hand touches grounding wafer LP, if LED 1 does not work, circuit breaker Q F has controlled to supply socket right hole phase line, belongs to normal, otherwise abnormal.
Whether manual test socket right hole phase line is by the switch control rule on this socket
When according to manually detect supply socket right hole whether have voltage and voltage whether normal after, after determining that socket right hole voltage is normal, close the switch Q on socket, hand touches grounding wafer LP, if LED 1 does not work, switch Q on socket has controlled to supply socket right hole phase line, belongs to normal, otherwise abnormal.
Further, the manual testing circuit of described ground wire is made up of grounding wafer PEP, resistance R11 and LED 3, is serially connected with resistance R11 and LED 3 between resistance R9 and grounding wafer PEP.Whether the manual testing circuit of described ground wire is mainly used in manually detecting hole ground wire in supply socket normal.
Concrete operation step and principle of work as follows:
After first being inserted by installation's power source plug on the power supply Three-hole socket that will detect, determining that socket right hole voltage is normal, hand touches grounding wafer PEP, and LED 3 is not luminous, and in supply socket, ground wire Preliminary detection in hole is normal, otherwise abnormal.
Further, the manual testing circuit of described zero line is made up of grounding wafer NP, resistance R10 and LED 2, is serially connected with resistance R10 and LED 2 between resistance R8 and grounding wafer NP.Whether the manual testing circuit of described zero line is mainly used in manually detecting supply socket left hole zero line normal.
Concrete operation step and principle of work as follows:
After first being inserted by installation's power source plug on the power supply Three-hole socket that will detect, determining that socket right hole voltage is normal, hand touches grounding wafer NP, and LED 2 is not luminous, and supply socket left hole zero line Preliminary detection is normal, otherwise abnormal.
In order to can better control, protection circuit or regulate described in device, the power supply phase line plug XPL1 described in this programme and circuit connecting end are provided with fuse FU1; Be provided with between described resistance R3 and zero line plug XPN1 and automatically detect/zero line checkout button the SBTN of observation circuit for disconnecting zero line; In the specific implementation, described zero line automatically detect/LED of observation circuit 4 is packaged as a whole with the photoresistance RL1 controlled by this LED 4; And described ground wire automatically detect/LED of observation circuit 5 is packaged as a whole with the photoresistance RL2 controlled by this LED 5.
During concrete use; when the power plug head end of the device described in this programme is connected with residing external circuit or equipment; device described in this programme can detect in time and whether phase line, zero line and ground wire in the residing circuit of monitoring exists abnormal or when power supply environment or power utilization environment exception; device described in this programme by the voice prompt operation person of the warning device of warning circuit or user by power-off or avoid contact arrangement, thus can reach reminding effect.As when on socket, hole protection ground wire is abnormal, the device meeting voice message described in this programme: " receptacle grounds is with voltage or opened a way, and please check.", and when socket left hole abnormity of zero line, the device meeting voice message described in this programme: " socket zero line is with voltage or opened a way, and please check."; Simultaneously under on socket left hole zero line, socket right hole phase line, socket, hole ground wire detects normal situation, this device then can without voice message.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. circuit or Electrical Testing, a monitoring device, is characterized in that, described device comprises:
Power circuit: comprise transformer TR and rectifier stack UR, for device provides power supply;
The ground wire grounded resistance of equipment and leakage switch testing circuit: the interlock keyswitch SB1 comprising controllable power circuit transformer TR input end break-make, relay K 1 coil in parallel with power circuit transformer TR input end and be connected in parallel on the relay K 2 normally opened contact K2-1 at relay K 1 coil two ends, dimmer switch TG, electrical appliance E, reometer PA2 and interlock keyswitch SB3 normally closed contact SB3-1, another branch road: be connected in series with interlock keyswitch SB3 normally opened contact SB3-2 between alternating current ammeter PA2 to power ground plug XPPE1, interlock keyswitch SB2 normally opened contact SB2-3, ground wire checkout button SBTPE, the other end of interlock keyswitch SB1 meets the phase wire terminal XPL1 of attaching plug and the zero line joint XPN1 of attaching plug respectively, power circuit rectifier stack UR positive pole and test socket XS2 are connected in series with fuse FU2 between hole, relay K 2 coil, the normally opened contact K1-1 of relay K 1, DC ammeter PA1, interlock keyswitch SB2 normally closed contact SB2-1, power circuit rectifier stack UR negative pole connects the left hole of test socket XS2 respectively, right hole and connection detection line socket XS1, detection line plug XP1, detection line clip ZJ, interlock keyswitch SB2 normally opened contact SB2-2 is connected in series with between another branch road: DC ammeter PA1 to power ground plug XPPE1, ground wire checkout button SBTPE,
Ground wire detects/observation circuit automatically: the phase wire terminal XPL1 of attaching plug by sensing device GY2 connecting resistance R9, the earth connection point XPPE1 of another termination attaching plug of resistance R9 and and grounding wafer PEJ between be serially connected with resistance R5, resistance R6 and LED 5;
Zero line detects/observation circuit automatically: the phase wire terminal XPL1 of attaching plug by sensing device GY1 connecting resistance R8, the zero line joint XPN1 of another termination attaching plug of resistance R8 and and grounding wafer NJ between be serially connected with resistance R3, resistance R4 and LED 4;
Warning circuit: the photoresistance RL2 comprising photoresistance RL1 that the LED 4 by zero line testing circuit controls and the LED 5 by ground line detection circuit, and by the warning circuit of this photoresistance RL1 and photoresistance RL2.
2. circuit according to claim 1 or Electrical Testing, monitoring device, it is characterized in that: be also provided with the manual testing circuit of phase line, the manual testing circuit of described phase line is made up of grounding wafer LP, resistance R7 and LED 1, is serially connected with resistance R7 and LED 1 between the phase wire terminal XPL1 of attaching plug and grounding wafer LP.
3. circuit according to claim 1 or Electrical Testing, monitoring device, it is characterized in that: be also provided with the manual testing circuit of ground wire, the manual testing circuit of described ground wire is made up of grounding wafer PEP, resistance R11 and LED 3, is serially connected with resistance R11 and LED 3 between resistance R9 and grounding wafer PEP.
4. circuit according to claim 1 or Electrical Testing, monitoring device, it is characterized in that: be also provided with the manual testing circuit of zero line, the manual testing circuit of described zero line is made up of grounding wafer NP, resistance R10 and LED 2, is serially connected with resistance R10 and LED 2 between resistance R8 and grounding wafer NP.
5. circuit according to claim 1 or Electrical Testing, monitoring device, is characterized in that: the phase wire terminal XPL1 of described attaching plug and circuit connecting end are provided with fuse FU1.
6. circuit according to claim 1 or Electrical Testing, monitoring device, is characterized in that: be provided with between described resistance R5 and earth connection point XPPE1 and disconnect ground wire and automatically detect/ground wire checkout button the SBTPE of observation circuit.
7. circuit according to claim 1 or Electrical Testing, monitoring device, is characterized in that: be provided with between described resistance R3 and zero line joint XPN1 and automatically detect/zero line checkout button the SBTN of observation circuit for disconnecting zero line.
8. circuit according to claim 1 or Electrical Testing, monitoring device, is characterized in that: and described zero line detects automatically/and the LED 4 of observation circuit is packaged as a whole with the photoresistance RL1 controlled by this LED 4.
9. circuit according to claim 1 or Electrical Testing, monitoring device, is characterized in that: the LED 5 of described ground line detection circuit is packaged as a whole with the photoresistance RL2 controlled by this LED 5.
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| CN201310745387.9A CN104749455B (en) | 2013-12-31 | 2013-12-31 | A kind of circuit or Electrical Testing, monitoring device |
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| CN201310745387.9A CN104749455B (en) | 2013-12-31 | 2013-12-31 | A kind of circuit or Electrical Testing, monitoring device |
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| CN104749455B CN104749455B (en) | 2017-08-11 |
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| CN105717367A (en) * | 2016-04-13 | 2016-06-29 | 国网新疆电力公司阿克苏供电公司 | Grounding device resistor monitor for preventing humans and animals from electric shock |
| CN108224790A (en) * | 2018-04-04 | 2018-06-29 | 广东格美淇电器有限公司 | Earth wire charged testing device and a kind of electric heater |
| CN110850332A (en) * | 2019-11-20 | 2020-02-28 | 深圳市奇辉电气有限公司 | Trend statistical type grounding body monitoring method and device |
| CN112098892A (en) * | 2020-09-18 | 2020-12-18 | 新兴铸管股份有限公司 | Electricity leakage alarm circuit for electricity utilization equipment |
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Also Published As
| Publication number | Publication date |
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| CN104749455B (en) | 2017-08-11 |
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