CN105738802A - Improved detection device possessing phase display circuit - Google Patents

Abstract

The present invention relates to an improved detection device possessing a phase display circuit. The improved detection device possessing the phase display circuit comprises an AC power supply circuit, a phase generation circuit, an AC electric leakage adjusting circuit and a time detection circuit, the phase generation circuit comprises a DC generation circuit, and the DC generation circuit is composed of a resistor R67, a 9V dry battery Bt and button switches SB5 and SB6. One end of the resistor R67 is connected with the anode of the 9V dry battery U, and the other end is connected with an intermediate contact of the button switch SB5. A normally open contact of the button switch SB5 is connected with a normally open contact and a normally-closed contact of the button switch SB6, and the cathode of the 9V dry battery is connected with the normally open contact and the normally-closed contact of the button switch SB6. The intermediate contact of the button switch SB6 is connected with a DC output wiring terminal +, and an intermediate contact SB6-21 of the button switch SB6 is connected with the DC output -. The improved detection device possessing the phase display circuit of the present invention is more reasonable in structure, and can satisfy the special demands of users.

Description

A kind of modified model detection equipment with phase place display circuit

Technical field

The present invention relates to a kind of modified model detection equipment.

Background technology

According to standard GB/T 14048.2-2001, GB16916.1-2003, GB16917.1-2003 etc. specify: to the residue pulsating direct current or the residue simple sinusoidal alternating current that either apply suddenly or slowly rising has regulation, can ensure that the RCCB threaded off at the appointed time is referred to as A type RCCB.Either applying suddenly or slow rising are had the residue simple sinusoidal alternating current without DC component, can ensure that the RCCB threaded off at the appointed time, referred to as AC type RCCB.From the foregoing, it will be observed that A type RCCB covers the function of AC type RCCB.

Above-mentioned " the residue pulsating current of regulation " is following 4 kinds of situations: the half-wave rectified current of current lagging voltage 0, the half-wave rectified current of current lagging voltage 90, the half-wave rectified current of current lagging voltage 135, the half-wave rectified current of current lagging voltage 0 containing 6mA direct current.

Prior art does not exist the device measuring A type RCCB.

Summary of the invention

The technical problem to be solved is to provide a kind of scope of testing compared with the wide and relatively stable modified model detection equipment reliably with phase place display circuit of performance.

For solving above-mentioned technical problem, the invention provides a kind of modified model detection equipment with phase place display circuit, including AC power circuit, DC power-supply circuit, phase generating circuit, ac leakage regulation circuit, phase place display circuit, indicator light circuit and time detection circuit；It is characterized in that: AC power circuit has the first live wire end for constituting load circuit and for constituting the second live wire end of simulation loop of electric leakage, first live wire end and the second live wire end are for being connected with the live wire input of equipment under test, and the zero line side of described load circuit is for being connected with the zero line side of equipment under test；Described equipment under test is A type RCCB；Phase generating circuit is for being connected with fire wire output end L2 of equipment under test；Phase generating circuit includes control knob circuit, and control knob circuit generates the half-wave rectified current of current lagging voltage 0, the half-wave rectified current of current lagging voltage 90, the half-wave rectified current of current lagging voltage 135 and the half-wave rectified current of the current lagging voltage 0 containing 6mA direct current for controlling phase generating circuit in described simulation loop of electric leakage respectively；Ac leakage regulation circuit is for controlling the size of current of described simulation loop of electric leakage；Time detection circuit is conducted to the time needed for A type RCCB is threaded off, i.e. movement time for measuring from described simulation loop of electric leakage；Described phase generating circuit includes: the first half-wave rectifying circuit of current lagging voltage 0, second half-wave rectifying circuit of current lagging voltage 90, 3rd half-wave rectifying circuit of current lagging voltage 135, 6mA direct current generative circuit and controllable silicon current control circuit, controllable silicon current control circuit is for according to described first half-wave rectifying circuit, the control signal of the second half-wave rectifying circuit and the output of the 3rd half-wave rectifying circuit generates the half-wave rectified current of current lagging voltage 0 in described simulation loop of electric leakage respectively, the half-wave rectified current of current lagging voltage 90, the half-wave rectified current of current lagging voltage 135 and the half-wave rectified current of the current lagging voltage 0 containing 6mA direct current；3rd half-wave rectifying circuit of described current lagging voltage 135 includes: the sine wave shaped being made up of transformator T2, diode D5, resistance R3, R4, R5, R6, R7 and operational amplifier IC1A becomes circuit, the charging circuit being made up of resistance R8, electric capacity C5 being connected with the outfan of operational amplifier IC1A, be made up of diode D6, D7 with door；It is used for setting resistance R9 and R10 of the voltage of adjusting relative to current lagging voltage 135, being used for regulating the resistance R11 and potentiometer WR1 of the comparison voltage relative to current lagging voltage 135 of the backward end of operational amplifier IC1B, the outfan of operational amplifier IC1B is for exporting the control signal of current lagging voltage 135；Resistance R12 is the current-limiting resistance of audion BG3 base stage, audion BG3 and resistance R13 constitutes emitter follower, the control signal of the current lagging voltage 135 on resistance R13 gives audion BG18 by press button SB1, resistance R58, audion BG18 drives opto-coupler chip IC4, resistance R59 is current-limiting resistance, it is ensured that opto-coupler chip IC4 effectively works；Opto-coupler chip IC4 is in order to isolate alternating current 220V and phase generating circuit direct current component, control the turn-on and turn-off of bidirectional triode thyristor BG19, resistance R60, R61, for controlling the G pole input current of bidirectional triode thyristor BG19, make input signal enough trigger bidirectional triode thyristor BG19 conducting；Bidirectional triode thyristor BG19 A, K bis-pole be connected on load with alternating current power supply between, the electric current flowing through load is exactly the half-wave rectified current lagging behind voltage 135；Controlling bidirectional triode thyristor BG19 can control by the residue pulsating current specified in circuit, regulator potentiometer WR3, WR4, WR5 can control leakage current；When press button SB10 closes, two intermediate contacts of press button SB10 are for the detection of phase generating circuit output waveform；Described controllable silicon current control circuit includes: the control signal that exports according to described first half-wave rectifying circuit, the second half-wave rectifying circuit and the 3rd half-wave rectifying circuit and the audion BG18 turned on, the opto-coupler chip IC4 that driven by audion BG18, A, K pole of the bidirectional triode thyristor BG19, bidirectional triode thyristor BG19 that are controlled break-make by opto-coupler chip IC4 is connected in described simulation loop of electric leakage；Described time detection circuit includes: single-chip microcomputer IC6, be connected with the detection of electrical leakage end of single-chip microcomputer IC6 for detecting the leakaging signal detecting circuit whether described simulation loop of electric leakage turns on and the charactron for showing the time being connected with the temporal information outfan of single-chip microcomputer IC6；Single-chip microcomputer IC6 measures according to the electric leakage signal that leakaging signal detecting circuit exports and is conducted to the time needed for A type RCCB is threaded off and by this time of described numeral method from described simulation loop of electric leakage；Described 6mA direct current generative circuit is made up of resistance R67,9V aneroid battery Bt, press button SB5, SB6；One end of resistance R67 is connected with the positive pole of 9V aneroid battery U, the other end of resistance R67 is connected with the intermediate contact of press button SB5, the normally opened contact of press button SB5 is connected with normally opened contact, the normally-closed contact of press button SB6,9V dry battery cathode connects the normally opened contact of press button SB6, the intermediate contact of press button SB6 and direct current output wiring terminal "+" be connected, the intermediate contact SB6-21 of press button SB6 is connected with direct current output "-"；

Resistance R73, resistance R77 are the current-limiting resistance of opto-coupler chip IC5, resistance R78 is the current-limiting resistance of 1 foot of single-chip microcomputer IC6, electric capacity C15, resistance R79 form peaker, resistance R80, resistance R81, resistance R82, resistance R83, resistance R84, resistance R85, resistance R86, resistance R87 are the current-limiting resistance of each pin of charactron LED11, and resistance R88, resistance R89, resistance R90, resistance R91 are audion BG23, the current-limiting resistance of the b pole of audion BG24, audion BG25, audion BG26；Press button SB17 is testing button, and press button SB18 is SR.

The present invention has positive effect: the present invention is by improving direct current generative circuit so that it is relatively reasonable in structure, it is possible to effectively to meet the testing requirement of special RCCB.

Accompanying drawing explanation

Being further explained the present invention below in conjunction with accompanying drawing, wherein accompanying drawing is as follows:

Fig. 1 is the contour structures schematic diagram of the modified model detection equipment of embodiment 1；

Fig. 2 is the part electrical schematic diagram of the modified model detection equipment of embodiment 1；

Fig. 3 is another part electrical schematic diagram of the modified model detection equipment of embodiment 1.

Detailed description of the invention

(embodiment 1)

See Fig. 1-3, the present embodiment is a kind of modified model detection equipment for testing RCCB, including: AC power circuit 1, DC power-supply circuit 7, phase generating circuit 2, ac leakage regulation circuit 3, phase place display circuit 6, indicator light circuit 5 and time detection circuit 4.

AC power circuit 1 has the first live wire end for constituting load circuit and for constituting the second live wire end of simulation loop of electric leakage, first live wire end and the second live wire end are for being connected with the live wire input of equipment under test 9, and the zero line side of described load circuit is for being connected with the zero line side of equipment under test 9.In the present embodiment, equipment under test 9 is A type RCCB.

Phase generating circuit 2 is for being connected with fire wire output end L2 of equipment under test 9；Phase generating circuit 2 includes control knob circuit, and control knob circuit generates the half-wave rectified current of current lagging voltage 0, the half-wave rectified current of current lagging voltage 90, the half-wave rectified current of current lagging voltage 135 and the half-wave rectified current of the current lagging voltage 0 containing 6mA direct current for controlling phase generating circuit 2 in described simulation loop of electric leakage respectively.

Ac leakage regulation circuit 3 is for controlling the size of current of described simulation loop of electric leakage；Time detection circuit 4 is conducted to the time needed for A type RCCB is threaded off, i.e. movement time for measuring from described simulation loop of electric leakage.

Described phase generating circuit 2 includes: the first half-wave rectifying circuit of current lagging voltage 0, second half-wave rectifying circuit of current lagging voltage 90, 3rd half-wave rectifying circuit of current lagging voltage 135, 6mA direct current generative circuit, and for according to described first half-wave rectifying circuit, the control signal of the second half-wave rectifying circuit and the output of the 3rd half-wave rectifying circuit generates the half-wave rectified current of current lagging voltage 0 in described simulation loop of electric leakage respectively, the half-wave rectified current of current lagging voltage 90, the controllable silicon current control circuit of the half-wave rectified current of the half-wave rectified current of current lagging voltage 135 and the current lagging voltage 0 containing 6mA direct current.

3rd half-wave rectifying circuit of described current lagging voltage 135 includes: the sine wave shaped being made up of transformator T2, diode D5, resistance R3, R4, R5, R6, R7 and operational amplifier IC1A becomes circuit, the charging circuit being made up of resistance R8, electric capacity C5 being connected with the outfan of operational amplifier IC1A, be made up of diode D6, D7 with door；It is used for setting resistance R9 and R10 of the voltage of adjusting relative to current lagging voltage 135, being used for regulating the resistance R11 and potentiometer WR1 of the comparison voltage relative to current lagging voltage 135 of the backward end of operational amplifier IC1B, the outfan of operational amplifier IC1B is for exporting the control signal of current lagging voltage 135.

Resistance R12 is the current-limiting resistance of audion BG3 base stage, audion BG3 and resistance R13 constitutes emitter follower, the control signal of the current lagging voltage 135 on resistance R13 gives audion BG18 by press button SB1, resistance R58, audion BG18 drives opto-coupler chip IC4, resistance R59 is current-limiting resistance, it is ensured that opto-coupler chip IC4 effectively works.Opto-coupler chip IC4 is in order to isolate alternating current 220V and phase generating circuit direct current component, control the turn-on and turn-off of bidirectional triode thyristor BG19, resistance R60, R61, for controlling the G pole input current of bidirectional triode thyristor BG19, make input signal enough trigger bidirectional triode thyristor BG19 conducting.Bidirectional triode thyristor BG19 A, K bis-pole be connected on load with alternating current power supply between, the electric current flowing through load is exactly the half-wave rectified current lagging behind voltage 135.Controlling bidirectional triode thyristor BG19 can control by the residue pulsating current specified in circuit, regulator potentiometer WR3, WR4, WR5 can control leakage current.

When press button SB10 closes, two intermediate contacts of press button SB10 are for the detection of phase generating circuit output waveform.

Described controllable silicon current control circuit includes: the control signal that exports according to described first half-wave rectifying circuit, the second half-wave rectifying circuit and the 3rd half-wave rectifying circuit and the audion BG18 turned on, the opto-coupler chip IC4 that driven by audion BG18, A, K pole of the bidirectional triode thyristor BG19, bidirectional triode thyristor BG19 that are controlled break-make by opto-coupler chip IC4 is connected in described simulation loop of electric leakage.

Described time detection circuit 4 includes: single-chip microcomputer IC6, be connected with the detection of electrical leakage end of single-chip microcomputer IC6 for detecting the leakaging signal detecting circuit whether described simulation loop of electric leakage turns on and the charactron for showing the time being connected with the temporal information outfan of single-chip microcomputer IC6；Single-chip microcomputer IC6 measures according to the electric leakage signal that leakaging signal detecting circuit exports and is conducted to the time needed for A type RCCB is threaded off and by this time of described numeral method from described simulation loop of electric leakage.

Described phase generating circuit 2 connects the phase place display circuit 6 of the half-wave rectified current with the presence of half-wave rectified current or the half-wave rectified current of current lagging voltage 90 or the half-wave rectified current of current lagging voltage 135 or the current lagging voltage 0 containing 6mA direct current for showing described simulation loop of electric leakage current lagging voltage 0.

AC power circuit is supplied electricity to transformator T4, transformator T4 output 180V, 220V, 250V, 380V voltage by 220V 50Hz alternating current power supply and is connected to exchange on output wiring terminal L1, N through band switch SA1.By the gear of adjusting band switch SA1, exchange output wiring terminal L1 and the voltage at N two ends can be changed.The load of transformator T4 is that ac leakage regulates circuit 3.

Ac leakage regulation circuit 3 is exported 26V alternating current by transformator T4, its outfan one end is followed by exchanging output wiring terminal L1 with band switch SA2 series connection, after the other end is connected with ammeter, electric leakage regulation resistance, bidirectional triode thyristor BG19, band switch SA3, it is connected to exchange output wiring terminal L2.

Logic circuit, press button that phase place display circuit 6 is made up of charactron LED1-LED4, diode D11-36, audion BG7-16 form.

When pressing the button switch SB4, current signal trigger triode BG20 turns on, and audion BG20 output signal trigger triode BG7, BG8 turn on, and charactron LED1 shows " A ", and charactron LED2 shows " C ". When pressing the button switch SB3, charactron LED1, LED4 show " A0 "；Pressing the button switch SB2, charactron LED1, LED3, LED4 show " A90 "；Pressing the button switch SB5, charactron LED1, LED2, LED3, LED4 show " A0-6 ".

Indicator light circuit 5 is made up of transformator T4, commutation diode D42-45, three terminal regulator BG27, RC filter circuit.DC power-supply circuit 7 includes: the 5V DC power-supply circuit powered by transformator T1, transformator T3 the 5V DC power-supply circuit powered, 12V DC power-supply circuit, 6mA direct current generative circuit.

Time detection circuit 4 is made up of press button, commutation diode D46-49, audion BG23-26, resistance, electric capacity C15, photoelectrical coupler IC5, single-chip microcomputer IC6, charactron LED11 etc..

6mA direct current generative circuit is made up of resistance R67,9V aneroid battery Bt, press button SB5, SB6.One end of resistance R67 is connected with the positive pole of 9V aneroid battery U, the other end of resistance R67 is connected with the intermediate contact of press button SB5, the normally opened contact of press button SB5 is connected with normally opened contact, the normally-closed contact of press button SB6,9V dry battery cathode connects the normally opened contact of press button SB6, normally opened contact is connected, the intermediate contact of press button SB6 and direct current output wiring terminal "+" be connected, the intermediate contact SB6-21 of press button SB6 is connected with direct current output "-".

Second half-wave rectifying circuit of current lagging voltage 90 is by resistance R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R57, R58, R59, R60, R61, electric capacity C6, diode D8, D9, D10, audion BG5, BG18, bidirectional triode thyristor BG19, operational amplifier IC2, opto-coupler chip IC4, potentiometer WR2 are constituted.

First half-wave rectifying circuit of current lagging voltage 0 is by resistance R50, R51, R52, R53, R54, R55, R56, R57, R58, R59, R60, R61, diode D37, audion BG17, BG18, bidirectional triode thyristor BG19, operational amplifier IC3, opto-coupler chip IC4 are constituted.The positive terminal of diode D51 is extremely connected with the e of the audion BG22 in phase place display circuit, the negative pole end of diode D51 is connected with one end of resistance R75, the other end of resistance R75 is extremely connected with the b of audion BG28,2 feet of opto-coupler chip IC7 are extremely connected with the c of audion BG28, and the e pole of audion BG28 is connected with 2 feet of stabilivolt BG21.One end of resistance R74 is connected with 3 feet of stabilivolt BG21, and the 4 of opto-coupler chip IC7,6 feet are connected with press button SB3 intermediate contact SB3-21, normally opened contact SB3-22 respectively.Because there being the half-wave rectified current containing 6mA direct current of current lagging voltage 0 in " the residue pulsating current of regulation ", therefore this part is for realizing in the case of " A0-6 ", it is ensured that the output of the half-wave rectified current of current lagging voltage 0.

Resistance R73, R77 are the current-limiting resistance of opto-coupler chip IC5, resistance R78 is the current-limiting resistance of 1 foot of single-chip microcomputer IC6, electric capacity C15, resistance R79 form peaker, resistance R80, R81, R82, R83, R84, R85, R86, R87 are the current-limiting resistance of each pin of charactron LED11, and resistance R88, R89, R90, R91 are the current-limiting resistance of the b pole of audion BG23, BG24, BG25, BG26.Press button SB17 is testing button, and press button SB18 is SR.

When press button SB17 closes, breaker electrifying, DC current forms a spike through peaker, and 1 foot of input single-chip microcomputer IC6, single-chip microcomputer IC6 starts timing.When circuit breaker trip, opto-coupler chip IC5 dead electricity, 4,6 feet turn off, and 3 feet of single-chip microcomputer IC6 have high level input, and single-chip microcomputer IC6 stopping timing also exports data and shows to charactron LED11.When press button SB18 presses, single-chip microcomputer IC6, charactron LED11 reset.

Above-described embodiment is only for clearly demonstrating example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And these spirit belonging to the present invention are extended out obvious change or variation still in protection scope of the present invention among.

Claims (1)

1. there is a modified model detection equipment for phase place display circuit, including AC power circuit, DC power-supply circuit, phase generating circuit, ac leakage regulation circuit, phase place display circuit, indicator light circuit and time detection circuit；It is characterized in that: AC power circuit has the first live wire end for constituting load circuit and for constituting the second live wire end of simulation loop of electric leakage, first live wire end and the second live wire end are for being connected with the live wire input of equipment under test, and the zero line side of described load circuit is for being connected with the zero line side of equipment under test；Described equipment under test is A type RCCB；Phase generating circuit is for being connected with fire wire output end L2 of equipment under test；Phase generating circuit includes control knob circuit, and control knob circuit generates the half-wave rectified current of current lagging voltage 0, the half-wave rectified current of current lagging voltage 90, the half-wave rectified current of current lagging voltage 135 and the half-wave rectified current of the current lagging voltage 0 containing 6mA direct current for controlling phase generating circuit in described simulation loop of electric leakage respectively；Ac leakage regulation circuit is for controlling the size of current of described simulation loop of electric leakage；Time detection circuit is conducted to the time needed for A type RCCB is threaded off, i.e. movement time for measuring from described simulation loop of electric leakage；Described phase generating circuit includes: the first half-wave rectifying circuit of current lagging voltage 0, second half-wave rectifying circuit of current lagging voltage 90, 3rd half-wave rectifying circuit of current lagging voltage 135, 6mA direct current generative circuit and controllable silicon current control circuit, controllable silicon current control circuit is for according to described first half-wave rectifying circuit, the control signal of the second half-wave rectifying circuit and the output of the 3rd half-wave rectifying circuit generates the half-wave rectified current of current lagging voltage 0 in described simulation loop of electric leakage respectively, the half-wave rectified current of current lagging voltage 90, the half-wave rectified current of current lagging voltage 135 and the half-wave rectified current of the current lagging voltage 0 containing 6mA direct current；3rd half-wave rectifying circuit of described current lagging voltage 135 includes: the sine wave shaped being made up of transformator T2, diode D5, resistance R3, R4, R5, R6, R7 and operational amplifier IC1A becomes circuit, the charging circuit being made up of resistance R8, electric capacity C5 being connected with the outfan of operational amplifier IC1A, be made up of diode D6, D7 with door；It is used for setting resistance R9 and R10 of the voltage of adjusting relative to current lagging voltage 135, being used for regulating the resistance R11 and potentiometer WR1 of the comparison voltage relative to current lagging voltage 135 of the backward end of operational amplifier IC1B, the outfan of operational amplifier IC1B is for exporting the control signal of current lagging voltage 135；Resistance R12 is the current-limiting resistance of audion BG3 base stage, audion BG3 and resistance R13 constitutes emitter follower, the control signal of the current lagging voltage 135 on resistance R13 gives audion BG18 by press button SB1, resistance R58, audion BG18 drives opto-coupler chip IC4, resistance R59 is current-limiting resistance, it is ensured that opto-coupler chip IC4 effectively works；Opto-coupler chip IC4 is in order to isolate alternating current 220V and phase generating circuit direct current component, control the turn-on and turn-off of bidirectional triode thyristor BG19, resistance R60, R61, for controlling the G pole input current of bidirectional triode thyristor BG19, make input signal enough trigger bidirectional triode thyristor BG19 conducting；Bidirectional triode thyristor BG19 A, K bis-pole be connected on load with alternating current power supply between, the electric current flowing through load is exactly the half-wave rectified current lagging behind voltage 135；Controlling bidirectional triode thyristor BG19 can control by the residue pulsating current specified in circuit, regulator potentiometer WR3, WR4, WR5 can control leakage current；When press button SB10 closes, two intermediate contacts of press button SB10 are for the detection of phase generating circuit output waveform；Described controllable silicon current control circuit includes: the control signal that exports according to described first half-wave rectifying circuit, the second half-wave rectifying circuit and the 3rd half-wave rectifying circuit and the audion BG18 turned on, the opto-coupler chip IC4 that driven by audion BG18, A, K pole of the bidirectional triode thyristor BG19, bidirectional triode thyristor BG19 that are controlled break-make by opto-coupler chip IC4 is connected in described simulation loop of electric leakage；Described time detection circuit includes: single-chip microcomputer IC6, be connected with the detection of electrical leakage end of single-chip microcomputer IC6 for detecting the leakaging signal detecting circuit whether described simulation loop of electric leakage turns on and the charactron for showing the time being connected with the temporal information outfan of single-chip microcomputer IC6；Single-chip microcomputer IC6 measures according to the electric leakage signal that leakaging signal detecting circuit exports and is conducted to the time needed for A type RCCB is threaded off and by this time of described numeral method from described simulation loop of electric leakage；Described 6mA direct current generative circuit is made up of resistance R67,9V aneroid battery Bt, press button SB5, SB6；One end of resistance R67 is connected with the positive pole of 9V aneroid battery U, the other end of resistance R67 is connected with the intermediate contact of press button SB5, the normally opened contact of press button SB5 is connected with normally opened contact, the normally-closed contact of press button SB6,9V dry battery cathode connects the normally opened contact of press button SB6, the intermediate contact of press button SB6 and direct current output wiring terminal "+" be connected, the intermediate contact SB6-21 of press button SB6 is connected with direct current output "-"；

Resistance R73, resistance R77 are the current-limiting resistance of opto-coupler chip IC5, resistance R78 is the current-limiting resistance of 1 foot of single-chip microcomputer IC6, electric capacity C15, resistance R79 form peaker, resistance R80, resistance R81, resistance R82, resistance R83, resistance R84, resistance R85, resistance R86, resistance R87 are the current-limiting resistance of each pin of charactron LED11, and resistance R88, resistance R89, resistance R90, resistance R91 are audion BG23, the current-limiting resistance of the b pole of audion BG24, audion BG25, audion BG26；Press button SB17 is testing button, and press button SB18 is SR.