CN108710080A - Leakage analog trial jump apparatus and system - Google Patents
Leakage analog trial jump apparatus and system Download PDFInfo
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- CN108710080A CN108710080A CN201810914637.XA CN201810914637A CN108710080A CN 108710080 A CN108710080 A CN 108710080A CN 201810914637 A CN201810914637 A CN 201810914637A CN 108710080 A CN108710080 A CN 108710080A
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- trial jump
- circuit
- leakage
- microcontroller
- trial
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
Abstract
The present invention provides a kind of leakage analog trial jump apparatus and systems, it is related to detection of electrical leakage field, there is a problem of that safety is low, stability is poor to alleviate existing leakage circuit breakers simulation trial jump circuit, the safety coefficient and stability of circuit, degree of being beneficial for improving user experience can be improved.The device includes：Trial jump control button circuit, microcontroller, electric leakage trial jump circuit；Trial jump control button circuit, electric leakage trial jump circuit are connected with microcontroller respectively；The generation of trial jump control button circuit control simulation electric leakage trial jump；Microcontroller to electric leakage trial jump circuit output leakage analog AC signal；Electric leakage trial jump circuit receives the leakage analog AC signal of microcontroller output and is transmitted to creepage mutual inductor.The device, which is directly leaked electricity by circuit internal electric source signal imitation, to be occurred, and is not necessarily to external high voltage power supply, is improved security reliability, while requiring circuit components low, and component is applicable in broad, reduces cost, and reduce operational risk.
Description
Technical field
The present invention relates to electrical testing technical fields, more particularly, to a kind of leakage analog trial jump apparatus and system.
Background technology
With the development of economic technology, leakage circuit breakers is put forward higher requirements.
Fig. 1 shows the schematic diagram of existing leakage circuit breakers simulation trial jump circuit, wherein P1 is creepage mutual inductor trial jump
Coil interface, resistance R1 are current-limiting resistances, and circuit connects AC220V power supplys, by trial jump control button S1 control circuits, press examination
It jumps button S1 to be closed, circuit forming circuit, AC signal generates inductive signal by creepage mutual inductor trial jump coil.
As shown in Figure 1, existing leakage circuit breakers simulates trial jump circuit, since circuit directly takes electric AC220V to make power supply letter
Number, dangerous big, stability is poor；In addition, the circuit proposes the more harsh safety of higher to component trial jump control button S1
It is required that testing cost is increased, while there are larger security risks for human hand directly operation.
To sum up, the existing leakage circuit breakers simulation trial jump circuit technical problem that there are safeties is low, stability is poor, cannot
The requirement that leakage circuit breakers develops to security reliability, the higher direction of stability is adapted to, causes user experience degree not high.
Invention content
In view of this, the purpose of the present invention is to provide a kind of leakage analog trial jump apparatus and system, with alleviation or part
Alleviate the technical problem that safety existing in the prior art is low, stability is poor, the safety coefficient of circuit and steady can be improved
It is qualitative, be conducive to improve user experience degree.
In a first aspect, an embodiment of the present invention provides a kind of leakage analog trial jump devices, including：Trial jump control button electricity
Road, microcontroller, electric leakage trial jump circuit；The trial jump control button circuit, the electric leakage trial jump circuit respectively with the micro-control
Device processed is connected；
The trial jump control button circuit is used to control the generation of simulation electric leakage trial jump；
The microcontroller is used for the electric leakage trial jump circuit output leakage analog AC signal；
The electric leakage trial jump circuit is used to receive the leakage analog AC signal of microcontroller output, and it is mutual to be transmitted to electric leakage
Sensor.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein institute
It includes trial jump button SW1 to state trial jump control button circuit, one end ground connection of the trial jump button SW1, the trial jump button SW1's
The other end connects the first ports I/O of the microcontroller.
With reference to first aspect, an embodiment of the present invention provides second of possible embodiments of first aspect, wherein institute
Stating electric leakage trial jump circuit has the first test port TEST1, the second test port TEST2 and external interface J1, and described first surveys
Examination port TEST1 is connected with the 2nd ports I/O of the microcontroller；The second test port TEST2 and the micro-control
3rd ports I/O of device processed are connected；The external interface J1 is for connecting creepage mutual inductor.
Second of possible embodiment with reference to first aspect, an embodiment of the present invention provides the third of first aspect
Possible embodiment, wherein the external interface J1 has the first jack 1 and the second jack 2, and it is mutual to be respectively used to connection electric leakage
The both ends of the trial jump coil of sensor.
The third possible embodiment with reference to first aspect, an embodiment of the present invention provides the 4th kind of first aspect
Possible embodiment, wherein the electric leakage trial jump circuit includes：Resistance R1, resistance R2, resistance R3, amplifier chip, it is described
Amplifier chip includes the first operational amplifier U3A, second operational amplifier U3D；
One end of the resistance R1 connects the first test port TEST1, the other end ground connection of the resistance R1；
One end of the resistance R2 connects the second test port TEST2, the other end ground connection of the resistance R2；
One end of the resistance R3 connects the output end of the first operational amplifier U3A, the other end of the resistance R3
Connect the second jack 2 of the external interface J1；
The in-phase input end of the first operational amplifier U3A connects the first test port TEST1, first fortune
The inverting input for calculating amplifier U3A connects the output end of the first operational amplifier U3A；
The in-phase input end of the second operational amplifier U3D connects the second test port TEST1, second fortune
The inverting input for calculating amplifier U3D connects the output end of the second operational amplifier U3D, the second operational amplifier
The output end of U3D connects the first jack 1 of the external interface J1.
Second of possible embodiment with reference to first aspect, an embodiment of the present invention provides the 5th kind of first aspect
Possible embodiment, wherein the microcontroller includes：First programmable timer, the second programmable timer, described
One programmable timer is used to export the first pulse signal, second programmable Timer to the first test port TEST1
Device is used to export the second pulse signal, and first pulse signal and second arteries and veins to the second test port TEST2
The level state for rushing signal is opposite.
With reference to first aspect, an embodiment of the present invention provides the 6th kind of possible embodiments of first aspect, wherein institute
It is R7F0C901 microcontrollers to state microcontroller.
The 4th kind of possible embodiment with reference to first aspect, an embodiment of the present invention provides the 7th kind of first aspect
Possible embodiment, wherein the amplifier chip uses TP1564A amplifier chips.
With reference to first aspect, an embodiment of the present invention provides the 8th kind of possible embodiments of first aspect, wherein should
Device further includes：The power supply being connected with the microcontroller, the power supply are used to be the leakage analog trial jump
Device provides operating current.
Second aspect, the embodiment of the present invention also provide a kind of leakage analog trial jump system, including：Creepage mutual inductor and such as the
Leakage analog trial jump device described in any one of one side and its possible embodiment, the creepage mutual inductor and the leakage
Electrical analogue trial jump device is connected.
The embodiment of the present invention brings following advantageous effect：
An embodiment of the present invention provides a kind of leakage analog trial jump apparatus and systems, wherein the leakage analog trial jump device
Including：Trial jump control button circuit, microcontroller, electric leakage trial jump circuit；Trial jump control button circuit, electric leakage trial jump circuit difference
It is connected with microcontroller；Trial jump control button circuit is used to control the generation of simulation electric leakage trial jump；Microcontroller is used for leakage
Electric trial jump circuit output leakage analog AC signal；Electric leakage trial jump circuit is used to receive the leakage analog exchange of microcontroller output
Signal, and it is transmitted to creepage mutual inductor.Therefore, it is disconnected can to alleviate existing electric leakage for technical solution provided in an embodiment of the present invention
The technical problem that there are safeties is low for road device simulation trial jump circuit, stability is poor does not adapt to leakage circuit breakers to safe and reliable
The requirement that property, the higher direction of stability are developed, causes user experience degree not high, can improve the safety coefficient of circuit with
And stability, be conducive to improve user experience degree.Directly believed by circuit internal electric source specifically, the device includes one kind
Number simulation electric leakage occur trial jump detection circuit, be not necessarily to external high voltage power supply, improve security reliability, while to circuit elements device
Part requires low, and component is applicable in broad, reduces cost, and reduce operational risk.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and is obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the schematic diagram that leakage circuit breakers in the prior art simulates trial jump circuit；
Fig. 2 is the schematic diagram of leakage analog trial jump device provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of the trial jump control button circuit in Fig. 2；
Fig. 4 is the schematic diagram of the electric leakage trial jump circuit in Fig. 2；
Fig. 5 is the concrete structure diagram of leakage analog trial jump device provided in an embodiment of the present invention；
Fig. 6 is the structure chart of leakage analog trial jump system provided in an embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
It is an object of the present invention to one examinations directly occurred by circuit internal electric source signal imitation electric leakage of design
Jump detection circuit.
Currently, existing leakage circuit breakers simulates trial jump circuit, and since circuit directly takes electric AC220V to make power supply signal, danger
Dangerous big, stability is poor；In addition, the circuit proposes the more harsh safety requirements of higher to component trial jump control button S1,
Testing cost is increased, while there are larger security risks for human hand directly operation, are based on this, one kind provided in an embodiment of the present invention
Leakage analog trial jump apparatus and system, can alleviate or part alleviates that safety existing in the prior art is low, stability is poor
Technical problem can improve the safety coefficient and stability of circuit, be conducive to improve user experience degree.
For ease of understanding the present embodiment, a kind of leakage analog trial jump disclosed in the embodiment of the present invention is filled first
It sets and describes in detail.
Embodiment one：
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, an embodiment of the present invention provides a kind of leakage analog trial jump devices, including：Examination
Jump control button circuit 100, microcontroller 200, electric leakage trial jump circuit 300；The trial jump control button circuit, electric leakage examination
Jumping circuit is connected with the microcontroller respectively；
The trial jump control button circuit is as generating means, the generation for controlling simulation electric leakage trial jump；
Specifically, after trial jump control button circuit turn-on, the simulation for trial jump of leaking electricity could occur；
After trial jump control button circuit turn-on, the microcontroller is used for electric leakage trial jump circuit output electric leakage mould
Quasi- AC signal；
Microcontroller can realize leakage analog exchange letter by the power supply signal that power supply connected to it exports
Number simulation, specifically, microcontroller passes through internal timer timing output power supply signal, the pulse signal of generation is as leakage
Electrical analogue AC signal.
The electric leakage trial jump circuit is used to receive the leakage analog AC signal of microcontroller output, and it is mutual to be transmitted to electric leakage
Sensor, so that creepage mutual inductor trial jump coil generates electric leakage inductive signal, to achieve the purpose that leakage analog trial jump.
Above-mentioned leakage analog AC signal is pulse signal, and also referred to as square-wave signal, pulse signal here can be managed
Solution is the DC power signal of microcontroller output；Specifically, microcontroller is sent out every 10ms by 5V DC power supplies
Pulse width is the power supply signal of 10ms, and pulse signal is in high level 1 at this time, when non-out-put supply signal, pulse signal
In low level 0, so as to realize the simulation of alternating current；
The trial jump detection occurred by the power supply signal simulation electric leakage of device internal circuit, i.e., occur inside microcontroller
Power supply signal simulates electric leakage signal, and electric leakage inductive signal is generated by creepage mutual inductor trial jump coil, reaches simulation electric leakage examination
The purpose of jump.
Leakage analog trial jump device provided in an embodiment of the present invention includes：Trial jump control button circuit, microcontroller, electric leakage
Trial jump circuit；Trial jump control button circuit, electric leakage trial jump circuit are connected with microcontroller respectively；Trial jump control button circuit is used
The generation of electric leakage trial jump is simulated in control；Microcontroller is used for electric leakage trial jump circuit output leakage analog AC signal；Electric leakage
Trial jump circuit is used to receive the leakage analog AC signal of microcontroller output, and is transmitted to creepage mutual inductor.Therefore, of the invention
The technical solution that embodiment provides can alleviate existing leakage circuit breakers simulation trial jump circuit there are safeties low, stability
The technical problem of difference, does not adapt to the requirement that leakage circuit breakers develops to security reliability, the higher direction of stability, causes to use
Family using experience degree is not high, can improve the safety coefficient and stability of circuit, is conducive to improve user experience degree.Tool
Body, which includes a kind of trial jump detection circuit directly occurred by circuit internal electric source signal imitation electric leakage, without outer
High voltage power supply is connect, improves security reliability, while circuit components are required low, component is applicable in broad, reduces into
This, and reduce operational risk.
Further, the trial jump control button circuit includes trial jump button SW1, and SW1 is also referred to as touch-switch, the examination
Jump one end ground connection of button SW1, the other end (being KEY_TEST in figure) described microcontroller of connection of the trial jump button SW1
First ports I/O.
In the present embodiment, SW1 is the key switch of common common specification, compared with the prior art in circuit to safety
It is required that high switch, the requirement of touch-switch SW1 is low, at low cost, advantageously reduces testing cost.
In one embodiment, microcontroller ports acquiescence is signaled to trial jump button always, when trial jump button disconnects, end
Mouth is 0, is closed forming circuit, port 1, and microcontroller detects 0,1 signal to differentiate button opening and closing；
Specifically, microcontroller is R7F0C901 microcontrollers, microcontroller passes through the first I/O that is connect with trial jump button SW1
Port persistently exports switch high level signal 1 to trial jump button SW1, and when trial jump button SW1 is disconnected, the first ports I/O are to monolithic
Machine return signal be 0, button be closed forming circuit, the first ports I/O to microcontroller return signal be 1, monolithic machine testing first
0,1 signal of signal that the ports I/O return presses switch to open, is closed to differentiate the differentiation of trial jump button, to judge that trial jump control is pressed
Whether the conducting of key circuit, 1 indicates that button is closed, circuit turn-on, and 0 indicates to press switch to open, and circuit does not turn on.
It should be noted that microcontroller can also be that (Programmable Logic Controller may be programmed PLC
Logic controller) or MCS-51 series in 8031 microcontrollers.
In another embodiment, which further includes：Switch sensor at the trial jump button, the switch are set
Sensor is connected with the microcontroller, and the detection sensor is used to detect status information (the i.e. button of trial jump button
Closure or openness state), and the status information is sent to the microcontroller；Microcontroller is believed according to the state received
Breath judges the closure or openness of button.
Specifically, after microcontroller detects that trial jump button is closed, output pulse signal to electric leakage trial jump trial jump circuit.
Another embodiment, switch sensor can be pressure sensor or position sensor.
Further, the electric leakage trial jump circuit has the first test port TEST1, the second test port TEST2 and outer
Portion interface J1, the first test port TEST1 are connected with the 2nd ports I/O of the microcontroller；Second test
Port TEST2 is connected with the 3rd ports I/O of the microcontroller；The external interface J1 is for connecting creepage mutual inductor.
In Fig. 4, the ends TEST1 are separately connected single-chip processor i/o signal receiving port (the 2nd ports I/O, the 3rd I/O with the ends TEST2
Port)；Resistance R1, resistance R2 are that biasing resistor is connected to ground, provide the bias current of amplifier input terminal；Resistance R3 is limited galvanic electricity
Resistance；U3A, U3D are operational amplifiers；J1 is creepage mutual inductor external interface.
Specifically, the external interface J1 has the first jack 1 and the second jack 2, it is respectively used to connection creepage mutual inductor
Trial jump coil both ends.
Further, the electric leakage trial jump circuit includes：Resistance R1, resistance R2, resistance R3, amplifier chip, it is described to put
Big device chip includes the first operational amplifier U3A, second operational amplifier U3D；
One end of the resistance R1 connects the first test port TEST1, the other end ground connection of the resistance R1；
One end of the resistance R2 connects the second test port TEST2, the other end ground connection of the resistance R2；
One end of the resistance R3 connects the output end (i.e. pin 1) of the first operational amplifier U3A, the resistance R3
The other end connect the second jack 2 of the external interface J1；
The in-phase input end (pin 3) of the first operational amplifier U3A connects the first test port TEST1, institute
The inverting input (pin 2) for stating the first operational amplifier U3A connects the output end (pin of the first operational amplifier U3A
1), the positive terminal (pin 4) of the first operational amplifier U3A is for connecting power supply, the first operational amplifier U3A
Negative pole end (pin 11) for being grounded；
The in-phase input end (pin 12) of the second operational amplifier U3D connects the second test port TEST1, institute
The inverting input (pin 13) for stating second operational amplifier U3D connects the output end (pin of the second operational amplifier U3D
14), the output end of the second operational amplifier U3D connects the first jack 1 of the external interface J1；
In view of two modules that the first operational amplifier and second operational amplifier are the same amplifier chip, because
This, second operational amplifier and the first operational amplifier share the same power supply.So not showing that the second operation in figure
The positive terminal of amplifier U3D, the connection relation of the negative pole end of the second operational amplifier U3D.
Certainly, when second operational amplifier U3D is independent in use, the positive terminal of second operational amplifier U3D is for connecting
Power supply, the negative pole end of the second operational amplifier U3D is for being grounded.
Specifically, above-mentioned amplifier chip uses TP1564A amplifier chips.
It should be pointed out that between the output end of second operational amplifier and the first jack 1 of the external interface J1
One current-limiting resistance can also be set.
Further, the microcontroller includes：First programmable timer, the second programmable timer, described first
Programmable timer is used to export the first pulse signal, institute to the first test port TEST1 of the electric leakage trial jump circuit
The second programmable timer is stated for exporting the second pulse letter to the second test port TEST2 of the electric leakage trial jump circuit
Number, and the level state of first pulse signal and second pulse signal is opposite；When i.e. TEST1 signals are " 1 ",
TEST2 signals are " 0 ", and when TEST1 signals are " 0 ", TEST2 signals are " 1 ".
Further, which further includes the power supply (being not shown in the drawing) being connected with the microcontroller, described
Power supply is used to provide operating current for the leakage analog trial jump device.
Specifically, the power supply is 5V DC power supplies, such as work electricity can be provided for microcontroller, amplifier chip
Stream.
Leakage analog trial jump device provided in an embodiment of the present invention directly handles the power supply letter occurred from microcontroller
Number electric leakage signal is simulated, the creepage mutual inductor trial jump coil by being inserted into external interface generates electric leakage inductive signal, reaches mould
The purpose of quasi- electric leakage trial jump.
Embodiment two：
As shown in fig. 6, an embodiment of the present invention provides a kind of leakage analog trial jump systems, including：600 He of creepage mutual inductor
Leakage analog trial jump device 700 as described in embodiment one, the creepage mutual inductor are connected with the leakage analog trial jump device
It connects.
Specifically, the trial jump coil of the creepage mutual inductor is connected with the external interface J1 of the leakage analog trial jump device
It connects.
Leakage analog trial jump system provided in an embodiment of the present invention leaks electricity trial jump button SW1 to control simulation by control
Electric leakage trial jump, microcontroller detect that trial jump button is closed, and the ports electric leakage trial jump circuit TEST1, TEST2 receive what microcontroller occurred
Pulse signal, when TEST1 signals " 1 ", TEST2 signals are " 0 ", and when TEST1 signals are " 0 ", TEST2 signals are " 1 ", signal point
Not Jing Guo amplifier and current-limiting resistance R3, pass through creepage mutual inductor trial jump coil forming circuit, the identification of creepage mutual inductor trial jump coil
The signal of " 0 ", " 1 " height mechanical periodicity, analog AC signal, creepage mutual inductor trial jump coil generate electric leakage inductive signal, reach
To the purpose of leakage analog trial jump.
The technique effect and aforementioned device embodiment phase of the system that the embodiment of the present invention is provided, realization principle and generation
Together, to briefly describe, system embodiment part does not refer to place, can refer to corresponding contents in aforementioned device embodiment.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
Specific work process, can refer to aforementioned device embodiment in corresponding process, details are not described herein.
In all examples being illustrated and described herein, any occurrence should be construed as merely illustrative, without
It is as limitation, therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
Leakage analog trial jump system provided in an embodiment of the present invention, the leakage analog trial jump device provided with above-described embodiment
Technical characteristic having the same reaches identical technique effect so can also solve identical technical problem.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In several embodiments provided herein, it should be understood that disclosed system, device can pass through it
Its mode is realized.The apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
A kind of division of logic function, formula that in actual implementation, there may be another division manner, in another example, multiple units or component can combine
Or it is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed phase
Coupling, direct-coupling or communication connection between mutually can be by some communication interfaces, the INDIRECT COUPLING of device or unit or
Communication connection can be electrical, machinery or other forms.
Finally it should be noted that：Embodiment described above, only specific implementation mode of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of leakage analog trial jump device, which is characterized in that including：Trial jump control button circuit, microcontroller, electric leakage trial jump
Circuit；The trial jump control button circuit, the electric leakage trial jump circuit are connected with the microcontroller respectively；
The trial jump control button circuit is used to control the generation of simulation electric leakage trial jump；
The microcontroller is used for the electric leakage trial jump circuit output leakage analog AC signal；
The electric leakage trial jump circuit is used to receive the leakage analog AC signal of microcontroller output, and is transmitted to electric leakage mutual inductance
Device.
2. leakage analog trial jump device according to claim 1, which is characterized in that the trial jump control button circuit includes
One end of trial jump button SW1, the trial jump button SW1 are grounded, and the other end of the trial jump button SW1 connects the microcontroller
The first ports I/O.
3. leakage analog trial jump device according to claim 1, which is characterized in that the electric leakage trial jump circuit has first
Test port TEST1, the second test port TEST2 and external interface J1, the first test port TEST1 and the microcontroller
2nd ports I/O of device are connected；The second test port TEST2 is connected with the 3rd ports I/O of the microcontroller；
The external interface J1 is for connecting creepage mutual inductor.
4. leakage analog trial jump device according to claim 3, which is characterized in that the external interface J1 has first to insert
Hole 1 and the second jack 2 are respectively used to the both ends of the trial jump coil of connection creepage mutual inductor.
5. leakage analog trial jump device according to claim 4, which is characterized in that the electric leakage trial jump circuit includes：Electricity
R1, resistance R2, resistance R3, amplifier chip are hindered, the amplifier chip is put including the first operational amplifier U3A, the second operation
Big device U3D；
One end of the resistance R1 connects the first test port TEST1, the other end ground connection of the resistance R1；
One end of the resistance R2 connects the second test port TEST2, the other end ground connection of the resistance R2；
One end of the resistance R3 connects the output end of the first operational amplifier U3A, the other end connection of the resistance R3
The second jack 2 of the external interface J1；
The in-phase input end of the first operational amplifier U3A connects the first test port TEST1, and first operation is put
The inverting input of big device U3A connects the output end of the first operational amplifier U3A；
The in-phase input end of the second operational amplifier U3D connects the second test port TEST1, and second operation is put
The inverting input of big device U3D connects the output end of the second operational amplifier U3D, the second operational amplifier U3D's
Output end connects the first jack 1 of the external interface J1.
6. leakage analog trial jump device according to claim 3, which is characterized in that the microcontroller includes：First can
Timer, the second programmable timer are programmed, first programmable timer is used for defeated to the first test port TEST1
Go out the first pulse signal, second programmable timer is used to export the second pulse letter to the second test port TEST2
Number, and the level state of first pulse signal and second pulse signal is opposite.
7. leakage analog trial jump device according to claim 1, which is characterized in that the microcontroller is R7F0C901 mono-
Piece machine.
8. leakage analog trial jump device according to claim 5, which is characterized in that the amplifier chip uses
TP1564A amplifier chips.
9. leakage analog trial jump device according to claim 1, which is characterized in that further include：With the microcontroller phase
The power supply of connection, the power supply are used to provide operating current for the leakage analog trial jump device.
10. a kind of leakage analog trial jump system, which is characterized in that including：Creepage mutual inductor and such as any one of claim 1-9 institutes
The leakage analog trial jump device stated, the creepage mutual inductor are connected with the leakage analog trial jump device.
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| CN201810914637.XA CN108710080A (en) | 2018-08-10 | 2018-08-10 | Leakage analog trial jump apparatus and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763993A (en) * | 2019-11-29 | 2020-02-07 | 松塔知识产权运营武汉有限公司 | Leakage current simulator |
| CN113495199A (en) * | 2021-09-09 | 2021-10-12 | 深圳博润缘科技有限公司 | Power equipment safety monitoring method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110763993A (en) * | 2019-11-29 | 2020-02-07 | 松塔知识产权运营武汉有限公司 | Leakage current simulator |
| CN113495199A (en) * | 2021-09-09 | 2021-10-12 | 深圳博润缘科技有限公司 | Power equipment safety monitoring method and system |
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