CN105699885A

CN105699885A - Improved type detection device having phase generation circuit

Info

Publication number: CN105699885A
Application number: CN201610078279.4A
Authority: CN
Inventors: 胡小青
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-27
Filing date: 2012-07-27
Publication date: 2016-06-22
Also published as: CN102749579B; CN105699887A; CN105572578A; CN102749579A; CN105699886A; CN105606995A; CN105572579A; CN105699887B

Abstract

The invention relates to an improved type detection device having a phase generation circuit. The improved type detection device comprises an alternating current power supply circuit, the phase generation circuit, an alternating current electric leakage regulating circuit and a time detection circuit. The phase generation circuit comprises a direct current generation circuit which consists of a resistor R67, a 9V dry cell Bt, and press button switches SB5 and SB6. One end of the resistor R67 is connected with a positive electrode of a 9V dry cell U, the other end of the resistor R67 is connected with a middle contact point of the press button switch SB5, a normally open contact point of the press button switch SB5 is connected with a normally open contact point and a normally close contact point of the press button switch SB6, a negative electrode of the 9V dry cell is connected with the normally open contact point and the normally close contact point of the press button switch SB6, a middle contact point of the press button switch SB6 is connected with a direct current output wire connecting post +, and the middle contact point SB6-21 of the press button switch SB6 is connected with a direct current output -. The detection device is reasonable in structure and can effectively meet special requirements of users.

Description

There is the modified model detection equipment of phase generating 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 no matter being the residue pulsating direct current with regulation or residue simple sinusoidal alternating current that apply suddenly or slowly rise, can ensure that the RCCB threaded off at the appointed time is called A type RCCB。To be no matter apply suddenly or slowly rise there is the residue simple sinusoidal alternating current without DC component, can ensure that the RCCB threaded off at the appointed time, be called 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 0o, the half-wave rectified current of current lagging voltage 90o, the half-wave rectified current of current lagging voltage 135o, current lagging voltage 0o containing 6mA direct current half-wave rectified current。

Prior art is absent from the device to the measurement of A type RCCB。

Summary of the invention

The technical problem to be solved is to provide a kind of tests that scope is relatively wide and the relatively stable modified model detection equipment reliably with phase generating circuit of performance。

For solving above-mentioned technical problem, the invention provides a kind of modified model detection equipment with phase generating circuit, regulate circuit, phase place display circuit, indicator light circuit and time detection circuit including AC power circuit, DC power-supply circuit, phase generating circuit, ac leakage；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 the 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 0o, the half-wave rectified current of current lagging voltage 90o, the half-wave rectified current of current lagging voltage 135o and the half-wave rectified current of current lagging voltage 0o containing 6mA direct current respectively for controlling phase generating circuit in described simulation loop of electric leakage；Ac leakage regulates circuit 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: first half-wave rectifying circuit of current lagging voltage 0o, second half-wave rectifying circuit of current lagging voltage 90o, 3rd half-wave rectifying circuit of current lagging voltage 135o, 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 0o respectively in described simulation loop of electric leakage, the half-wave rectified current of current lagging voltage 90o, the half-wave rectified current of the half-wave rectified current of current lagging voltage 135o and the current lagging voltage 0o containing 6mA direct current；3rd half-wave rectifying circuit of described current lagging voltage 135o includes: become circuit by transformator T2, diode D5, resistance R3, R4, R5, R6, R7 with the operational amplifier IC1A sine wave shaped constituted, 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 the R10 of the voltage of adjusting relative to current lagging voltage 135o, being used for regulating the resistance R11 and potentiometer WR1 of the comparison voltage relative to current lagging voltage 135o of the backward end of operational amplifier IC1B, the outfan of operational amplifier IC1B is for exporting the control signal of current lagging voltage 135o；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 135o 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 between load and alternating current power supply, the electric current flowing through load is exactly the half-wave rectified current lagging behind voltage 135o；Controlling the bidirectional triode thyristor BG19 residue pulsating current that can control to pass through to specify 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 audion BG18 turned on, the opto-coupler chip IC4 that driven by audion BG18 according to the control signal of described first half-wave rectifying circuit, the second half-wave rectifying circuit and the 3rd half-wave rectifying circuit output, 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 the normally opened contact of press button SB6, normally-closed contact, 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 exports "-" with direct current and is connected；

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 on exchange output wiring terminal L1, N through band switch SA1；By the gear of adjusting band switch SA1, change the voltage at exchange output wiring terminal L1 and N two ends；The load of transformator T4 is that ac leakage regulates circuit。

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

Below in conjunction with accompanying drawing, the present invention being further explained, 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 regulate 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 the 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 0o, the half-wave rectified current of current lagging voltage 90o, the half-wave rectified current of current lagging voltage 135o and the half-wave rectified current of current lagging voltage 0o containing 6mA direct current respectively for controlling phase generating circuit 2 in described simulation loop of electric leakage。

Ac leakage regulates circuit 3 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: first half-wave rectifying circuit of current lagging voltage 0o, second half-wave rectifying circuit of current lagging voltage 90o, 3rd half-wave rectifying circuit of current lagging voltage 135o, 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 0o respectively in described simulation loop of electric leakage, the half-wave rectified current of current lagging voltage 90o, the controllable silicon current control circuit of the half-wave rectified current of the half-wave rectified current of current lagging voltage 135o and the current lagging voltage 0o containing 6mA direct current。

3rd half-wave rectifying circuit of described current lagging voltage 135o includes: become circuit by transformator T2, diode D5, resistance R3, R4, R5, R6, R7 with the operational amplifier IC1A sine wave shaped constituted, 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 the R10 of the voltage of adjusting relative to current lagging voltage 135o, being used for regulating the resistance R11 and potentiometer WR1 of the comparison voltage relative to current lagging voltage 135o of the backward end of operational amplifier IC1B, the outfan of operational amplifier IC1B is for exporting the control signal of current lagging voltage 135o。

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 135o 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 between load and alternating current power supply, the electric current flowing through load is exactly the half-wave rectified current lagging behind voltage 135o。Controlling the bidirectional triode thyristor BG19 residue pulsating current that can control to pass through to specify 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 audion BG18 turned on, the opto-coupler chip IC4 that driven by audion BG18 according to the control signal of described first half-wave rectifying circuit, the second half-wave rectifying circuit and the 3rd half-wave rectifying circuit output, 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 is connected to for showing that described simulation loop of electric leakage exists the phase place display circuit 6 of the half-wave rectified current of the half-wave rectified current of the half-wave rectified current of current lagging voltage 0o or the half-wave rectified current of current lagging voltage 90o or current lagging voltage 135o or the current lagging voltage 0o containing 6mA direct current。

AC power circuit is supplied electricity to transformator T4, transformator T4 output 180V, 220V, 250V, 380V voltage by 220V50Hz alternating current power supply and is connected on exchange output wiring terminal L1, N through band switch SA1。By the gear of adjusting band switch SA1, the voltage at exchange output wiring terminal L1 and N two ends can be changed。The load of transformator T4 is that ac leakage regulates circuit 3。

Ac leakage regulates circuit 3 and 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 regulates resistance with ammeter, electric leakage, bidirectional triode thyristor BG19, band switch SA3 connect, 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 exports signal trigger triode BG7, BG8 conducting, 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 the normally opened contact of press button SB6, normally-closed contact, 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 exports "-" with direct current and is connected。

Second half-wave rectifying circuit of current lagging voltage 90o 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 0o 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 0o in " the residue pulsating current of regulation ", therefore this part is for realizing when " A0-6 ", it is ensured that the output of the half-wave rectified current of current lagging voltage 0o。

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 the apparent change that these spirit belonging to the present invention are extended out or variation are still among protection scope of the present invention。

Claims

1. there is a modified model detection equipment for phase generating circuit, regulate circuit, phase place display circuit, indicator light circuit and time detection circuit including AC power circuit, DC power-supply circuit, phase generating circuit, ac leakage；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 the 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 0o, the half-wave rectified current of current lagging voltage 90o, the half-wave rectified current of current lagging voltage 135o and the half-wave rectified current of current lagging voltage 0o containing 6mA direct current respectively for controlling phase generating circuit in described simulation loop of electric leakage；Ac leakage regulates circuit 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: first half-wave rectifying circuit of current lagging voltage 0o, second half-wave rectifying circuit of current lagging voltage 90o, 3rd half-wave rectifying circuit of current lagging voltage 135o, 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 0o respectively in described simulation loop of electric leakage, the half-wave rectified current of current lagging voltage 90o, the half-wave rectified current of the half-wave rectified current of current lagging voltage 135o and the current lagging voltage 0o containing 6mA direct current；3rd half-wave rectifying circuit of described current lagging voltage 135o includes: become circuit by transformator T2, diode D5, resistance R3, R4, R5, R6, R7 with the operational amplifier IC1A sine wave shaped constituted, 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 the R10 of the voltage of adjusting relative to current lagging voltage 135o, being used for regulating the resistance R11 and potentiometer WR1 of the comparison voltage relative to current lagging voltage 135o of the backward end of operational amplifier IC1B, the outfan of operational amplifier IC1B is for exporting the control signal of current lagging voltage 135o；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 135o 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 between load and alternating current power supply, the electric current flowing through load is exactly the half-wave rectified current lagging behind voltage 135o；Controlling the bidirectional triode thyristor BG19 residue pulsating current that can control to pass through to specify 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 audion BG18 turned on, the opto-coupler chip IC4 that driven by audion BG18 according to the control signal of described first half-wave rectifying circuit, the second half-wave rectifying circuit and the 3rd half-wave rectifying circuit output, 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 the normally opened contact of press button SB6, normally-closed contact, 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 exports "-" with direct current and is connected；