CN103176469B - Testing device for anti-phase protectors - Google Patents
Testing device for anti-phase protectors Download PDFInfo
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- CN103176469B CN103176469B CN201110442467.8A CN201110442467A CN103176469B CN 103176469 B CN103176469 B CN 103176469B CN 201110442467 A CN201110442467 A CN 201110442467A CN 103176469 B CN103176469 B CN 103176469B
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Abstract
The invention discloses a testing device for anti-phase protectors. The testing device comprises a microprocessor, a signal generating unit, a signal detecting unit and an output unit; the signal generating unit is used for outputting a first signal to an anti-phase protector after receiving a control signal of the microprocessor, the first signal is used for simulating an electric signal of a three-phase power source, and the anti-phase protector outputs a second signal after receiving the first signal; the signal detecting unit is used for outputting a first level to the microprocessor after receiving the second signal and outputting a second level to the microprocessor when not receiving the second signal; and the output unit is connected with the microprocessor and is used for outputting a test result, and the test result is acquired after the microprocessor receives the first level or the second level. The testing device has the advantages that when the testing device is used for testing functions of the anti-phase protector, various abnormal conditions can be automatically simulated to verify protection actions, and test conclusions can be displayed in real time.
Description
Technical field
The present invention relates to circuit field, in particular to a kind of proving installation of anti-phase protector.
Background technology
Anti-phase protector is a kind of strong power controller in air conditioner product, and in the use procedure of air conditioner, when fortuitous event appears in three-phase supply, as situations such as anti-phase, phase shortage, low pressure, overcurrents, anti-phase protector is used for protecting air conditioner.In the production run of anti-phase protector, require the functional test carrying out anti-phase protector in situations such as the extraneous anti-phase of " functional test stage " simulation, phase shortage, normal, low-voltage variation, overcurrent protections, to verify correctness, the reliability of its function.
At present, the proving installation of anti-phase protector is when testing the function of anti-phase protector:
(1) toggle switch is one by one needed manually to simulate the actions such as positive, anti-phase, phase shortage, low-voltage variation, overcurrent protection;
(2) pressure regulator of manual adjustments heaviness is needed to carry out high-low pressure simulation;
(3) light on and off of artificial visual inspection LED are needed to judge test result.
The test problem that the frock of this manual testing's mode exists has: cannot avoid the situation such as artificial erroneous judgement, test leakage in test process; Testing efficiency is low; Electrical safety hidden danger etc. is there is in test process.
Easily make mistakes for the proving installation of anti-phase protector in correlation technique, testing efficiency is low and there is the problem of electrical safety hidden danger in test process, not yet propose effective solution at present.
Summary of the invention
Fundamental purpose of the present invention is the proving installation providing a kind of anti-phase protector, easily makes mistakes, testing efficiency is low and there is the problem of electrical safety hidden danger in test process with the proving installation solving anti-phase protector.
Proving installation according to anti-phase protector of the present invention comprises: microprocessor; Signal generating unit, first end is connected with microprocessor, second end connects anti-phase protector, for exporting the first signal to anti-phase protector after receiving microprocessor-based control signal, wherein, first signal is for simulating the electric signal of three-phase supply, and anti-phase protector exports secondary signal after receiving the first signal; Detecting signal unit, first end is connected with microprocessor, second end connects anti-phase protector, for exporting the first level to microprocessor after receiving secondary signal, second electrical level is exported to microprocessor after not receiving secondary signal, wherein, the first level and second electrical level are different level; And output unit, be connected with microprocessor, for outputing test result, wherein, test result is the test result obtained after microprocessor receives the first level or second electrical level.
Further, signal generating unit comprises: positive signal generating unit, for exporting the three-phase electricity signal of positive; Inverse phase signal generating unit, for exporting the three-phase electricity signal of anti-phase; Default phase signal generating unit, for exporting the three-phase electricity signal of phase shortage; Low-voltage signal generating unit, for exporting the three-phase electricity signal of low pressure; And over-current signal generating unit, for the three-phase electricity signal of output overcurrent, detecting signal unit comprises: positive detecting signal unit, inverse phase signal detecting unit, default phase signal detecting unit, low-voltage signal detecting unit and over-current signal detecting unit.
Further, positive signal generating unit comprises: relay, comprise coil and multiple contact switch, the first end of multiple contact switch connects three-phase supply, second end of multiple contact switch is connected with anti-phase protector, relay is used for the three-phase supply of positive to input to anti-phase protector, and the first end of coil is connected with direct supply; Switching tube, first end is connected with microprocessor, and the second end is connected with the second end of coil, the 3rd end ground connection; Diode, with the coils from parallel connection of coils of relay; And electric capacity, with the coils from parallel connection of coils of relay.
Further, inverse phase signal generating unit comprises: relay, comprise coil and multiple contact switch, the first end of multiple contact switch connects three-phase supply, second end of multiple contact switch is connected with anti-phase protector, relay is used for the three-phase supply of anti-phase to input to anti-phase protector, and the first end of coil is connected with direct supply; Switching tube, first end is connected with microprocessor, and the second end is connected with the second end of coil, the 3rd end ground connection; Diode, with the coils from parallel connection of coils of relay; And electric capacity, with the coils from parallel connection of coils of relay.
Further, default phase signal generating unit comprises: relay, comprise coil and multiple contact switch, the first end of multiple contact switch connects three-phase supply, in multiple contact switch, the second end of part contact switch is connected with anti-phase protector, relay is used for the three-phase supply of phase shortage to input to anti-phase protector, and the first end of coil is connected with direct supply; Switching tube, first end is connected with microprocessor, and the second end is connected with the second end of coil, the 3rd end ground connection; Diode, with the coils from parallel connection of coils of relay; And electric capacity, with the coils from parallel connection of coils of relay.
Further, low-voltage signal generating unit comprises: bleeder circuit; Relay, comprise coil and multiple contact switch, the first end of multiple contact switch connects three-phase supply, second end of the first contact switch in multiple contact switch is connected with anti-phase protector via bleeder circuit, second end of other contact switch in multiple contact switch is connected with anti-phase protector, relay is used for the three-phase supply of low pressure to input to anti-phase protector, and the first end of coil is connected with direct supply; Switching tube, first end is connected with microprocessor, and the second end is connected with the second end of coil, the 3rd end ground connection; Diode, with the coils from parallel connection of coils of relay; And electric capacity, with the coils from parallel connection of coils of relay.
Further, over-current signal generating unit comprises: the first relay, and comprise coil and a contact switch, the first end of the coil of the first relay is connected with direct supply; First switching tube, first end is connected with microprocessor, and the second end is connected with the second end of the coil of the first relay, the 3rd end ground connection; First diode, with the coils from parallel connection of coils of the first relay; First electric capacity, with the coils from parallel connection of coils of the first relay; Resistance; Second relay, comprise coil and multiple contact switch, the first end of multiple contact switch connects three-phase supply, second end of the first contact switch in multiple contact switch is connected with anti-phase protector with resistance via the contact switch of the first relay successively, second end of other contact switch in multiple contact switch is connected with anti-phase protector, second relay is used for the three-phase supply of overcurrent to input to anti-phase protector, and the first end of the coil of the second relay is connected with direct supply; Second switch pipe, first end is connected with microprocessor, and the second end is connected with the second end of the coil of the second relay, the 3rd end ground connection; Second diode, with the coils from parallel connection of coils of the second relay; And second electric capacity, with the coils from parallel connection of coils of the second relay.
Further, positive detecting signal unit, inverse phase signal detecting unit and default phase signal detecting unit include: rectifier bridge, and first end is connected with anti-phase protector; Bleeder circuit, first end is connected with the second end of rectifier bridge; Optocoupler, first end is connected with the second end of bleeder circuit; First resistance, first end connects power supply; Switching tube, first end is connected with the second end of optocoupler, and the second end of switching tube is connected with the second end of the first resistance, the 3rd end ground connection; And second resistance, first end is connected to first node, and the second end is connected with microprocessor, and wherein, first node is the node between the second end of the first resistance and switching tube.
Further, low-voltage signal detecting unit or over-current signal detecting unit comprise: optocoupler, and first end is connected with anti-phase protector; First resistance, first end connects power supply; Switching tube, first end is connected with the second end of optocoupler, and the second end of switching tube is connected with the second end of the first resistance, the 3rd end ground connection; And second resistance, first end is connected to first node, and the second end is connected with microprocessor, and wherein, first node is the node between the second end of the first resistance and switching tube.
Further, output unit comprises: display module, for showing the first information when microprocessor receives the first level, shows the second information when microprocessor receives second electrical level, and wherein, the first information and the second information are different information; And/or alarm module, for sending alerting signal when microprocessor receives second electrical level.
Further, the proving installation of this anti-phase protector also comprises: storage unit, is connected with microprocessor, for storing the information of display module display; And/or input block, be connected with microprocessor, for receiving the request signal of user's input, wherein, display module is used for showing information after input block receives request signal.
By the present invention, adopt and comprise with the proving installation of the anti-phase protector of lower part: microprocessor; Signal generating unit, for exporting the first signal to anti-phase protector after receiving microprocessor-based control signal, wherein, the first signal is for simulating the electric signal of three-phase supply, and anti-phase protector exports secondary signal after receiving the first signal; Detecting signal unit, for exporting the first level to microprocessor after receiving secondary signal, exports second electrical level to microprocessor after not receiving secondary signal; And output unit; for outputing test result; the proving installation solving anti-phase protector is easily made mistakes, testing efficiency is low and there is the problem of electrical safety hidden danger in test process; and then when reaching the function adopting proving installation test anti-phase protector; can the various exception of automatic imitation; checking protection act, and show the effect of test result in real time.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the theory diagram of the proving installation of anti-phase protector according to a first embodiment of the present invention;
Fig. 2 is the schematic diagram of the proving installation of anti-phase protector according to the embodiment of the present invention;
Fig. 3 is the test flow chart of the proving installation of anti-phase protector according to the embodiment of the present invention;
Fig. 4 is the theory diagram of the proving installation of anti-phase protector according to a second embodiment of the present invention;
Fig. 5 is the schematic diagram of the positive signal generating unit according to the embodiment of the present invention;
Fig. 6 is the schematic diagram of the default phase signal generating unit according to the embodiment of the present invention;
Fig. 7 is the schematic diagram of the inverse phase signal generating unit according to the embodiment of the present invention;
Fig. 8 is the schematic diagram of the low-voltage signal generating unit according to the embodiment of the present invention;
Fig. 9 is the schematic diagram of the over-current signal generating unit according to the embodiment of the present invention;
Figure 10 is the schematic diagram of positive detecting signal unit, inverse phase signal detecting unit or default phase signal detecting unit according to the embodiment of the present invention; And
Figure 11 is the schematic diagram of low-voltage signal detecting unit according to the embodiment of the present invention or over-current signal detecting unit.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Fig. 1 is the theory diagram of the proving installation of anti-phase protector according to a first embodiment of the present invention, and as shown in Figure 1, the proving installation of this anti-phase protector comprises: microprocessor 20, signal generating unit 40, detecting signal unit 60 and output unit 80.
Microprocessor 20 is connected with signal generating unit 40, for transmitting control signal to signal generating unit 40, to make signal generating unit 40, the signal of simulation anti-phase protector functional test is inputed to anti-phase protector.
Signal generating unit 40, first end is connected with microprocessor 20, and the second end connects anti-phase protector, and for exporting the first signal to anti-phase protector after the control signal receiving microprocessor 20, wherein, the first signal is for simulating the electric signal of three-phase supply.When anti-phase protector function is normal, after receiving the first signal, export secondary signal, during anti-phase protector dysfunction, after receiving the first signal, export other signals, or do not export any signal.
Detecting signal unit 60; first end is connected with microprocessor 20; second end connects anti-phase protector; for exporting the first level to microprocessor 20 after receiving secondary signal; second electrical level is exported to microprocessor 20 after not receiving secondary signal; wherein, the first level and second electrical level are different level.
The level signal type that microprocessor 20 returns according to detecting signal unit 60, judges that whether the function of anti-phase protector is normal.
Output unit 80, is connected with microprocessor 20, and for outputing test result, wherein, test result is the test result obtained after microprocessor receives the first level or second electrical level.
The proving installation of the anti-phase protector adopting this embodiment to provide; when testing the function of anti-phase protector; microprocessor 20 sends control signal automatically to make signal generating unit 40 to anti-phase protector input simulating signal; simultaneously; microprocessor 20 detects anti-phase protector to the feedback signal of simulating signal via detecting signal unit; and draw test result according to the signal of feedback; thus automatically simulate the possible exception of anti-phase protector; checking protection act, and test result can be shown in real time.
In this embodiment; the proving installation of this anti-phase protector is by controlling the input of 380V three-phase supply and the big current signal of tested anti-phase protector; preferably; as shown in Figure 2; different simulating signals is sent according to detecting signal unit 60; tested anti-phase protector is in respectively, and positive is tested, anti-phase is tested, phase shortage is tested, low-voltage variation is tested, five test phases are tested in overcurrent protection; accordingly; the test output signal that the proving installation of anti-phase protector feeds back according to anti-phase protector, accurately judges that whether the function of tested anti-phase protector is normal.
More preferably; during this proving installation test anti-phase protector; the testing process shown in Fig. 3 can be adopted; first positive test is carried out; display testing result normal (OK) or abnormal (NG) after test; then anti-phase test, phase shortage test, low-voltage variation test, overcurrent protection test is carried out successively; and show testing result OK or NG after each test; after all situations is all completed; judge that whether the test result of each test phase is all normal; " testing result OK " is shown time normal, otherwise display " testing result NG ".
Particularly, the theory diagram of the proving installation that the preferred embodiment provides as shown in Figure 4, this proving installation comprises: single-chip microcomputer (MCU) 100, Switching Power Supply 101, storage unit 104, push-button unit 105 (i.e. input block), LCD display unit 106, LED indicating member 107, buzzing Tip element 108, signal generating unit 109B-113B, for sending each functional simulation signal, perform test job; Detecting signal unit 109A-113A, for detecting the signal exported after anti-phase protector receives functional simulation signal.
Wherein, LCD display unit 106 is display module, is the one of the output unit 80 shown in Fig. 1; LED indicating member 107 and buzzing Tip element 108 are alarm module, are also the one of the output unit 80 shown in Fig. 1.
Signal generating unit comprises: positive signal generating unit 109B, for exporting the three-phase electricity signal of positive; Inverse phase signal generating unit 110B, for exporting the three-phase electricity signal of anti-phase; Default phase signal generating unit 111B, for exporting the three-phase electricity signal of phase shortage; Low-voltage signal generating unit 112B, for exporting the three-phase electricity signal of low pressure; And over-current signal generating unit 113B, for the three-phase electricity signal of output overcurrent, detecting signal unit comprises: positive detecting signal unit 109A, inverse phase signal detecting unit 110A, default phase signal detecting unit 111A, low-voltage signal detecting unit 112A and over-current signal detecting unit 113A.
220V civil power obtains by getting L1 and N in 380V three-phase supply, switch 102 controls the power supply of whole proving installation, Switching Power Supply 101 provides the power supply of system (namely 220V voltage transition is that 5V, 12V voltage is supplied to Single Chip Microcomputer (SCM) system and relay respectively by power module), once switch 102 is opened, Switching Power Supply 101 powers on, whole test macro runs, and testing process starts:
First be positive test: send positive control signal by single-chip microcomputer (MCU) 100, positive signal generating unit 109B works, single-chip microcomputer (MCU) 100 receives the positive monitor signal fed back from positive detecting signal unit 109A simultaneously, as monitor signal exists, then LCD display unit 106 will show " positive OK " printed words, as monitor signal does not exist, illustrate that test is abnormal, now LCD display unit 106 will show " positive NG " printed words, LED indicating member 107 will flash the redlight, buzzing Tip element 108 also sounds, and alert test has exception; But the appearance of unusual condition can't affect the carrying out of next step, proving installation also can continue following analog detection according to normal sequence.
After positive is completed, enter anti-phase test: send anti-phase control signal by single-chip microcomputer (MCU) 100 at once, inverse phase signal generating unit 110B works, single-chip microcomputer (MCU) 100 receives the anti-phase monitor signal sent from inverse phase signal detecting unit 110A simultaneously, as monitor signal exists, then LCD display unit 106 will show " anti-phase OK " printed words, as monitor signal does not exist, illustrate that test is abnormal, now LCD display unit 106 will show " anti-phase NG " printed words, LED indicating member 107 will flash the redlight, buzzing Tip element 108 also sounds, alert test has exception,
After anti-phase is completed, enter phase shortage test: send phase shortage control signal by single-chip microcomputer (MCU) 100 at once, default phase signal generating unit 111B works, single-chip microcomputer (MCU) 100 receives the phase shortage monitor signal sent from default phase signal detecting unit 111A simultaneously, as monitor signal exists, then LCD display unit 106 will show " phase shortage OK " printed words, as monitor signal does not exist, illustrate that test is abnormal, now LCD display unit 106 will show " phase shortage NG " printed words, LED indicating member 107 will flash the redlight, buzzing Tip element 108 also sounds, alert test has exception,
After phase shortage is completed, enter low-voltage variation test: send low-voltage control signal by single-chip microcomputer (MCU) 100 at once, low-voltage signal generating unit 112B works, single-chip microcomputer (MCU) 100 receives the low voltage monitoring signal sent from low-voltage signal detecting unit 112A simultaneously, as monitor signal exists, then LCD display unit 106 will show " low pressure OK " printed words, as monitor signal does not exist, illustrate that test is abnormal, now LCD display unit 106 will show " low pressure NG " printed words, LED indicating member 107 will flash the redlight, buzzing Tip element 108 also sounds, alert test has exception,
After low-voltage variation is completed, enter overcurrent protection test: sent flow control signals by single-chip microcomputer (MCU) 100 at once, over-current signal generating unit 113B works, single-chip microcomputer (MCU) 100 receives the overcurrent monitoring signal sent from over-current signal detecting unit 113A simultaneously, as monitor signal exists, then LCD display unit 106 will show " overcurrent OK " printed words, as monitor signal does not exist, illustrate that test is abnormal, now LCD display unit 106 will show " overcurrent NG " printed words, LED indicating member 107 will flash the redlight, buzzing Tip element 108 also sounds, alert test has exception.
Preferably; anti-phase protector device for testing functions can test 3 anti-phase protectors or more simultaneously; receive the test signal of each tested anti-phase protector when testing simultaneously, and test result is presented at respectively on LCD display unit 106, can for judging respectively.
After above five testing procedures complete, single-chip microcomputer (MCU) 100 gathers this test case, is presented on LCD display unit 106 by total test result " OK " or " NG ", and this detecting information will stored in storage unit 104 simultaneously.Now, powered-down, has once tested.Test case before can being inquired about by push-button unit 105, after receiving the querying command of push-button unit 105 input, LCD display unit 106 shows test results.
Preferably, in the embodiment shown in fig. 4, each signal generating unit and detecting signal unit are realized by embodiment as described below.
Fig. 5 is the schematic diagram of the positive signal generating unit according to the embodiment of the present invention, and as shown in Figure 5, this positive signal generating unit comprises: relay R LY101, switching tube Q101 (this embodiment is for triode), diode D101 and electric capacity C101.
Wherein, relay R LY101 comprises coil and multiple contact switch; the first end of multiple contact switch connects the L1 of three-phase supply successively; L2; L3, N, the second end of multiple contact switch is connected with anti-phase protector; the three-phase supply of positive is inputed to anti-phase protector, the first termination 12V power supply of coil.The first end of switching tube Q101 is connected with the positive control signal output terminal of microprocessor, and the second end is connected with the second end of coil, the 3rd end ground connection.The coils from parallel connection of coils of diode D101 and relay R LY101.The coils from parallel connection of coils of electric capacity C101 and relay.
The principle of work of this positive signal generating unit is: after single-chip microcomputer sends positive control signal; triode Q101 saturation conduction, the conducting of relay R LY101 coil, four contact switch adhesives; 380V three-phase supply L1, L2, L3, N deliver to tested anti-phase protector successively, simulation positive situation.D101 in figure is fly-wheel diode, and available protecting triode Q101, diode D101 and electric capacity C101 together prevent the misoperation of relay R LY101.
Fig. 6 is the schematic diagram of the default phase signal generating unit according to the embodiment of the present invention, and as shown in Figure 6, this default phase signal generating unit comprises: relay R LY201, switching tube Q201 (this embodiment is for triode), diode D201 and electric capacity C201.
Wherein, relay R LY201 comprises coil and multiple contact switch; the first end of multiple contact switch connects the L1 of three-phase supply successively; L2, L3, N; the second end connecting L2 in multiple contact switch disconnects; second end of other contact switchs is connected with anti-phase protector, and the three-phase supply of phase shortage is inputed to anti-phase protector, the first termination 12V power supply of coil.The first end of switching tube Q201 is connected with the phase shortage control signal output terminal of microprocessor, and the second end is connected with the second end of coil, the 3rd end ground connection.The coils from parallel connection of coils of diode D201 and relay R LY201.The coils from parallel connection of coils of electric capacity C201 and relay.
The principle of work of this default phase signal generating unit is: after single-chip microcomputer sends phase shortage control signal; triode Q201 saturation conduction; the conducting of relay R LY201 coil; four contact switch adhesives; 380V three-phase supply L1, L3, N (lacking L2) deliver to tested anti-phase protector, the situation of simulation phase shortage.D201 in figure is fly-wheel diode, and available protecting triode Q201, diode D201 and electric capacity C201 together prevent the misoperation of relay R LY201.
Fig. 7 is the schematic diagram of the inverse phase signal generating unit according to the embodiment of the present invention, and as shown in Figure 7, this inverse phase signal generating unit comprises: relay R LY301, switching tube Q301 (this embodiment is for triode), diode D301 and electric capacity C301.
Wherein, relay R LY301 comprises coil and multiple contact switch, and the first end of multiple contact switch connects the L1 of three-phase supply, L2 successively; L3; N, the second end of multiple contact switch exports the L1 of three-phase supply, L3 successively; L2; N is to anti-phase protector, and the three-phase supply of anti-phase is inputed to anti-phase protector by relay R LY301, and the first end of coil is connected with 12V power supply.Switching tube Q301 first end is connected with the anti-phase control signal output terminal of microprocessor, and the second end is connected with the second end of coil, the 3rd end ground connection.The coils from parallel connection of coils of diode D301 and relay R LY301.The coils from parallel connection of coils of electric capacity C301 and relay R LY301.
The principle of work of this inverse phase signal generating unit is: after single-chip microcomputer sends anti-phase control signal; triode Q301 saturation conduction; the conducting of relay R LY301 coil; four contact switch adhesives; 380V three-phase supply delivers to tested anti-phase protector with L1, L3, L2 (exchanging L2, L3 order), N order, simulation anti-phase situation.D301 in figure is fly-wheel diode, and available protecting triode Q301, diode D301 and electric capacity C301 together prevent the misoperation of relay R LY301.
Fig. 8 is the schematic diagram of the low-voltage signal generating unit according to the embodiment of the present invention, this low-voltage signal generating unit comprises: relay R LY401, switching tube Q401 (this embodiment is for triode), diode D401, electric capacity C401 and bleeder circuit, wherein, bleeder circuit is by resistance R402, and resistance R403 and resistance R404 is formed.
Wherein, relay R LY401 comprises coil and multiple contact switch, the first end of multiple contact switch connects three-phase supply, second end of the first contact switch (namely connecting the contact switch of three-phase supply L1 phase) in multiple contact switch is connected with anti-phase protector via bleeder circuit, namely the second end of the first contact switch is connected with resistance R402, resistance R404 is connected with resistance R402 via resistance R403, between resistance R402 and resistance R404, node is set, this node is connected to anti-phase protector, second end of other contact switch is directly connected with anti-phase protector, the three-phase supply of low pressure is inputed to anti-phase protector by relay R LY401, the first end of coil is connected with 12V power supply.The first end of switching tube Q401 is connected with the low-voltage control signal output terminal of microprocessor, and the second end is connected with the second end of coil, the 3rd end ground connection.The coils from parallel connection of coils of diode D401 and relay R LY401.The coils from parallel connection of coils of electric capacity C401 and relay R LY401.
The principle of work of this low-voltage signal generating unit is: after single-chip microcomputer sends low-voltage control signal; triode Q401 saturation conduction; the conducting of relay R LY401 coil; four contact switch adhesives; in 380V three-phase supply, L1 is together delivered to tested anti-phase protector by dividing potential drop and L2, L3, N; reach the effect of step-down, simulation low pressure condition.D401 in figure is fly-wheel diode, and available protecting triode Q401, diode D401 and electric capacity C401 together prevent the misoperation of relay R LY401.
Fig. 9 is the schematic diagram of the over-current signal generating unit according to the embodiment of the present invention, as shown in Figure 9, this low-voltage signal generating unit comprises: the first relay R LY502, first switching tube Q502 (this embodiment is for triode), first diode D502, the first electric capacity C502 and resistance R503, also comprise: the second relay R LY501, second switch pipe Q501 (this embodiment is for triode), the second diode D501 and the second electric capacity C501.
Wherein, the first relay R LY502 comprises coil and a contact switch, and the first end of the coil of the first relay R LY502 is connected with 12V power supply.The first end of the first switching tube Q502 is connected with the mistake flow control signals output terminal of microprocessor, and the second end is connected with the second end of the coil of the first relay R LY502, the 3rd end ground connection.The coils from parallel connection of coils of the first diode D502 and the first relay R LY502.The coils from parallel connection of coils of the first electric capacity C502 and the first relay R LY502.
Second relay R LY501; comprise coil and multiple contact switch; the first end of multiple contact switch connects three-phase supply; second end of the first contact switch (namely connecting the contact switch of three-phase supply L1 phase) in multiple contact switch is connected with anti-phase protector with resistance R503 via the contact switch of the first relay R LY502 successively; second end of other contact switch is connected with anti-phase protector; the three-phase supply of overcurrent is inputed to anti-phase protector by the second relay R LY501, and the first end of the coil of the second relay R LY501 is connected with 12V power supply.The first end of second switch pipe Q501 is connected with the mistake flow control signals output terminal of microprocessor, and the second end is connected with the second end of the coil of the second relay R LY501, the 3rd end ground connection.The coils from parallel connection of coils of the second diode D501 and the second relay R LY501.The coils from parallel connection of coils of the second electric capacity C501 and the second relay R LY501.
The principle of work of this over-current signal generating unit is: after single-chip microcomputer sent flow control signals; second triode Q501, the first triode Q502 saturation conduction; second relay R LY501 coil conducting; its four contact switch adhesives; in 380V three-phase supply, L1, L2, L3, N connect tested anti-phase protector successively, ensure that anti-phase protector is operated in positive state.First relay R LY502 conducting, by a very little resistance R503, forms a big current signal and delivers to tested anti-phase protector.The second diode D501 in figure is fly-wheel diode; available protecting second triode Q501; second diode D501 and the second electric capacity C501 together prevents the misoperation of the second relay R LY501; first diode D502 is fly-wheel diode; available protecting first triode Q502, the first diode D502 and the first electric capacity C502 together prevent the misoperation of the first relay R LY502.
Figure 10 is the schematic diagram of positive detecting signal unit, inverse phase signal detecting unit or default phase signal detecting unit according to the embodiment of the present invention, wherein, each detecting unit includes: rectifier bridge, bleeder circuit, optocoupler U601, first resistance (i.e. pull-up resistor) R607, the second resistance R608, switching tube Q601 and other resistance, capacitor element.
Wherein, rectifier bridge one end is connected with anti-phase protector; rectification is carried out to the signal that anti-phase protector exports; signal after rectification is inputed to one end of optocoupler U601 by the other end through bleeder circuit; the other end of optocoupler U601 connects the first end of 5V power supply and switching tube Q601; second end of switching tube Q601 is connected to 5V power supply via pull-up resistor R607, the 3rd end ground connection.Between pull-up resistor R607 and switching tube Q601, arrange node, this node is connected to the input end of single-chip microcomputer, and this node and single-chip microcomputer input end are also in series with the second resistance R608.The 3rd resistance R606 is also in series with between optocoupler U601 and switching tube Q601.4th resistance R605 is in parallel with electric capacity C601, and one end ground connection after in parallel, the other end is connected to the node between optocoupler U601 and switching tube Q601.
Positive, phase shortage, inverse phase signal detecting unit are identical; the principle of work of each unit is: four diodes D601, D602, D603, D604 form a rectifier bridge; information, after rectifier bridge, is delivered to single-chip processor i/o by the positive/anti-phase/phase shortage decision signal of the 220V that anti-phase protector exports after resistance R601, R602, R603 dividing potential drop after delivering to optocoupler U601 by resistance R604.When not exporting the positive/anti-phase/phase shortage decision signal of 220V as anti-phase protector; optocoupler U601 not conducting; triode Q601 not conducting; now single-chip processor i/o mouth (positive/anti-phase/pile defection signal end) is high level; as anti-phase protector export the positive/anti-phase/phase shortage decision signal of 220V time; optocoupler U601 conducting, triode Q601 conducting, now single-chip processor i/o mouth (positive/anti-phase/pile defection signal end) is low level.Namely when single-chip processor i/o mouth input signal is low level, represent that tested anti-phase protector is in normal guard mode, the signal namely exported by detection is that low level or high level learn that whether tested anti-phase protector is in normal work.
Figure 11 is the schematic diagram of low-voltage signal detecting unit according to the embodiment of the present invention or over-current signal detecting unit, wherein, each detecting unit includes: optocoupler U701, first resistance (i.e. pull-up resistor) R704, second resistance R705, switching tube Q701 and other resistance, capacitor element.
Wherein, the signal that anti-phase protector exports inputs to optocoupler U701 through resistance R701, and another termination 5V power supply of optocoupler U701 and the first end of switching tube Q701, second end of switching tube Q701 is connected to 5V power supply via pull-up resistor R704, the 3rd end ground connection.Between pull-up resistor R704 and switching tube Q701, arrange node, this node is connected to the input end of single-chip microcomputer, and this node and single-chip microcomputer input end are also in series with the second resistance R705.The 3rd resistance R703 is also in series with between optocoupler U701 and switching tube Q701.4th resistance R702 is in parallel with electric capacity C701, and one end ground connection after in parallel, the other end is connected to the node between optocoupler U701 and switching tube Q701.
Low pressure detects identical with the detecting signal unit of over-current detection, and the principle of work of each unit is: information is delivered to single-chip processor i/o by low pressure/overcurrent decision signal that anti-phase protector exports after optocoupler U701.As anti-phase protector do not export low pressure/overcurrent decision signal time; optocoupler U701 not conducting; switching tube Q701 not conducting; now single-chip processor i/o mouth (low pressure/over-current detection signal end) is input as high level; during as anti-phase protector output low pressure/overcurrent decision signal, optocoupler U701 conducting, switching tube Q701 conducting; now single-chip processor i/o mouth (low pressure/overcurrent phase detection signal end) is input as low level, and principle is the same.
As can be seen from the above description, present invention achieves following technique effect: the defect avoiding manual testing's mode device, ensure that production is smooth and easy, eliminate hidden danger of quality, stop electrical safety hidden danger, realize anti-phase protector and automatically detect and show in real time.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.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. a proving installation for anti-phase protector, is characterized in that, comprising:
Microprocessor;
Signal generating unit, first end is connected with described microprocessor, second end connects described anti-phase protector, for exporting the first signal to described anti-phase protector after receiving described microprocessor-based control signal, wherein, described first signal, for simulating the electric signal of three-phase supply, when described anti-phase protector function is normal, exports secondary signal after receiving described first signal;
Detecting signal unit, first end is connected with described microprocessor, second end connects described anti-phase protector, for exporting the first level to described microprocessor after receiving described secondary signal, second electrical level is exported to described microprocessor after not receiving described secondary signal, wherein, the level signal type of described microprocessor also for returning according to described detecting signal unit judges that whether the function of described anti-phase protector is normal, and described first level and described second electrical level are different level; And
Output unit, is connected with described microprocessor, and for outputing test result, wherein, described test result is the test result obtained after described microprocessor receives described first level or described second electrical level,
Wherein, described signal generating unit comprises: positive signal generating unit, for exporting the three-phase electricity signal of positive; Inverse phase signal generating unit, for exporting the three-phase electricity signal of anti-phase; Default phase signal generating unit, for exporting the three-phase electricity signal of phase shortage; Low-voltage signal generating unit, for exporting the three-phase electricity signal of low pressure; And over-current signal generating unit, for the three-phase electricity signal of output overcurrent,
Described detecting signal unit comprises: positive detecting signal unit, inverse phase signal detecting unit, default phase signal detecting unit, low-voltage signal detecting unit and over-current signal detecting unit,
Wherein, described positive signal generating unit comprises:
Relay, comprise coil and multiple contact switch, the first end of described multiple contact switch connects three-phase supply, second end of described multiple contact switch is connected with described anti-phase protector, described relay is used for the three-phase supply of positive to input to described anti-phase protector, and the first end of described coil is connected with direct supply;
Switching tube, first end is connected with described microprocessor, and the second end is connected with the second end of described coil, the 3rd end ground connection;
Diode, with the coils from parallel connection of coils of described relay; And
Electric capacity, with the coils from parallel connection of coils of described relay.
2. the proving installation of anti-phase protector according to claim 1, is characterized in that, described inverse phase signal generating unit comprises:
Relay, comprise coil and multiple contact switch, the first end of described multiple contact switch connects three-phase supply, second end of described multiple contact switch is connected with described anti-phase protector, described relay is used for the three-phase supply of anti-phase to input to described anti-phase protector, and the first end of described coil is connected with direct supply;
Switching tube, first end is connected with described microprocessor, and the second end is connected with the second end of described coil, the 3rd end ground connection;
Diode, with the coils from parallel connection of coils of described relay; And
Electric capacity, with the coils from parallel connection of coils of described relay.
3. the proving installation of anti-phase protector according to claim 1, is characterized in that, described default phase signal generating unit comprises:
Relay, comprise coil and multiple contact switch, the first end of described multiple contact switch connects three-phase supply, in described multiple contact switch, the second end of part contact switch is connected with described anti-phase protector, described relay is used for the three-phase supply of phase shortage to input to described anti-phase protector, and the first end of described coil is connected with direct supply;
Switching tube, first end is connected with described microprocessor, and the second end is connected with the second end of described coil, the 3rd end ground connection;
Diode, with the coils from parallel connection of coils of described relay; And
Electric capacity, with the coils from parallel connection of coils of described relay.
4. the proving installation of anti-phase protector according to claim 1, is characterized in that, described low-voltage signal generating unit comprises:
Bleeder circuit;
Relay, comprise coil and multiple contact switch, the first end of described multiple contact switch connects three-phase supply, second end of the first contact switch in described multiple contact switch is connected with described anti-phase protector via described bleeder circuit, second end of other contact switch in described multiple contact switch is connected with described anti-phase protector, described relay is used for the three-phase supply of low pressure to input to described anti-phase protector, and the first end of described coil is connected with direct supply;
Switching tube, first end is connected with described microprocessor, and the second end is connected with the second end of described coil, the 3rd end ground connection;
Diode, with the coils from parallel connection of coils of described relay; And
Electric capacity, with the coils from parallel connection of coils of described relay.
5. the proving installation of anti-phase protector according to claim 1, is characterized in that, described over-current signal generating unit comprises:
First relay, comprise coil and a contact switch, the first end of the coil of described first relay is connected with direct supply;
First switching tube, first end is connected with described microprocessor, and the second end is connected with the second end of the coil of described first relay, the 3rd end ground connection;
First diode, with the coils from parallel connection of coils of described first relay;
First electric capacity, with the coils from parallel connection of coils of described first relay;
Resistance;
Second relay, comprise coil and multiple contact switch, the first end of described multiple contact switch connects three-phase supply, second end of the first contact switch in described multiple contact switch is connected with described anti-phase protector with described resistance via the contact switch of described first relay successively, second end of other contact switch in described multiple contact switch is connected with described anti-phase protector, described second relay is used for the three-phase supply of overcurrent to input to described anti-phase protector, and the first end of the coil of described second relay is connected with direct supply;
Second switch pipe, first end is connected with described microprocessor, and the second end is connected with the second end of the coil of described second relay, the 3rd end ground connection;
Second diode, with the coils from parallel connection of coils of described second relay; And
Second electric capacity, with the coils from parallel connection of coils of described second relay.
6. the proving installation of anti-phase protector according to claim 1, is characterized in that, described positive detecting signal unit, described inverse phase signal detecting unit and default phase signal detecting unit include:
Rectifier bridge, first end is connected with described anti-phase protector;
Bleeder circuit, first end is connected with the second end of described rectifier bridge;
Optocoupler, first end is connected with the second end of described bleeder circuit;
First resistance, first end connects power supply;
Switching tube, first end is connected with the second end of described optocoupler, and the second end of described switching tube is connected with the second end of described first resistance, the 3rd end ground connection; And
Second resistance, first end is connected to first node, and the second end is connected with described microprocessor, and wherein, described first node is the node between the second end of described first resistance and described switching tube.
7. the proving installation of anti-phase protector according to claim 1, is characterized in that, described low-voltage signal detecting unit or described over-current signal detecting unit comprise:
Optocoupler, first end is connected with described anti-phase protector;
First resistance, first end connects power supply;
Switching tube, first end is connected with the second end of described optocoupler, and the second end of described switching tube is connected with the second end of described first resistance, the 3rd end ground connection; And
Second resistance, first end is connected to first node, and the second end is connected with described microprocessor, and wherein, described first node is the node between the second end of described first resistance and described switching tube.
8. the proving installation of anti-phase protector according to any one of claim 1 to 7, is characterized in that, described output unit comprises:
Display module, for showing the first information when described microprocessor receives described first level, shows the second information when described microprocessor receives described second electrical level, wherein, the described first information is different information from described second information; And/or
Alarm module, for sending alerting signal when described microprocessor receives described second electrical level.
9. the proving installation of anti-phase protector according to claim 8, is characterized in that, also comprise:
Storage unit, is connected with described microprocessor, for storing the information of described display module display; And/or
Input block, is connected with described microprocessor, and for receiving the request signal of user's input, wherein, described display module is used for showing information after described input block receives described request signal.
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| CN201110442467.8A CN103176469B (en) | 2011-12-23 | 2011-12-23 | Testing device for anti-phase protectors |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110442467.8A CN103176469B (en) | 2011-12-23 | 2011-12-23 | Testing device for anti-phase protectors |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201514448U (en) * | 2009-07-02 | 2010-06-23 | 上海市电力公司超高压输变电公司 | Integrated testing device of relay protection |
| CN201707433U (en) * | 2010-05-31 | 2011-01-12 | 江南机电设计研究所 | Intelligent controller characteristic test instrument |
| CN202083952U (en) * | 2010-12-28 | 2011-12-21 | 苏州凌创电子系统有限公司 | Switch measuring system used for ECU test |
| CN202383516U (en) * | 2011-12-23 | 2012-08-15 | 珠海格力电器股份有限公司 | Testing device of anti-phase protectors |
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2011
- 2011-12-23 CN CN201110442467.8A patent/CN103176469B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201514448U (en) * | 2009-07-02 | 2010-06-23 | 上海市电力公司超高压输变电公司 | Integrated testing device of relay protection |
| CN201707433U (en) * | 2010-05-31 | 2011-01-12 | 江南机电设计研究所 | Intelligent controller characteristic test instrument |
| CN202083952U (en) * | 2010-12-28 | 2011-12-21 | 苏州凌创电子系统有限公司 | Switch measuring system used for ECU test |
| CN202383516U (en) * | 2011-12-23 | 2012-08-15 | 珠海格力电器股份有限公司 | Testing device of anti-phase protectors |
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