CN107272498A - A kind of intelligent electrical apparatus release based on RFID - Google Patents
A kind of intelligent electrical apparatus release based on RFID Download PDFInfo
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- CN107272498A CN107272498A CN201710594744.4A CN201710594744A CN107272498A CN 107272498 A CN107272498 A CN 107272498A CN 201710594744 A CN201710594744 A CN 201710594744A CN 107272498 A CN107272498 A CN 107272498A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
Abstract
The invention discloses a kind of intelligent electrical apparatus release based on RFID, including intelligent control board and tripping mechanism, the intelligent control board includes：Switching power supply, is coupled to outside civil power；Detecting signal unit, the detecting signal unit includes iron core transformer, RC wave filters and AC/DC changeover switch, the iron core transformer and outside civil power mutual inductance；Microprocessor unit, is coupled to AC/DC changeover switch, is further coupled to tripping mechanism；Rf receiver unit, is coupled to microprocessor unit；Display unit, is coupled to microprocessor unit.The intelligent electrical apparatus release based on RFID of the present invention, pass through the setting of rf receiver unit, just can effectively receive outside radiofrequency signal, be then communicated in microprocessor unit, so realize one can be by radiofrequency signal come the effect of remote control Intelligent Releaser.
Description
Technical field
The present invention relates to a kind of intelligent electrical apparatus release, more particularly to a kind of intelligent electrical apparatus release based on RFID.
Background technology
Breaker is used to switch in electric power system control and protection switch circuit and the releasable failure of intelligence, intelligent electrical apparatus release
It is the core component of intelligent breaker, electromagnetic type or hot type electrical apparatus release are in traditional low-voltage circuit breaker wide selection, the breaker
Action accuracy is not high, and it is a problem to adjust working value；In order to obtain different protection features, it is necessary to different configuration.Distribution
What is automated develops rapidly, and traditional electrical apparatus release of low-voltage circuit breaker configuration has not adapted to new required precision and harsh ring
Border, the performance of breaker actuation is determined by the real-time and accuracy of electrical apparatus release, so using communications applications technology, data signal
Treatment technology and the intelligent electrical apparatus release of computer technology turn into the hot topic of the research and development of global breaker industry.
And existing intelligent electrical apparatus release has been developed can realize the intelligent electrical apparatus release of remote control, existing intelligence is threaded off
Device realizes that the mode of remote control is main by wired and wireless two kinds, as the term suggests wired is exactly to take off mouth using wire connection is intelligent
Device and outside controller, the signal that outside controller is sent is by wire transmission to intelligent electrical apparatus release, so as to realize one
The effect that individual remote control is threaded off, then due to transmission during need wire, therefore may result in the behaviour of intelligent electrical apparatus release
Making can be very inconvenient, thus it is existing using it is a kind of wirelessly thread off by the way of, existing wireless dropout mode is mainly use
Infrared ray realizes a short distance remote control, is to use to pass through infrared emitting head yet with ultrared communication process
Infrared signal is sent in infrared receiving terminal, intelligent electrical apparatus release is then sent a signal to by infrared receiving terminal, so
An effect remotely threaded off is realized, it is one kind of light yet with infrared ray, and just straightline propagation, therefore in infrared ray
If there is barrier between emitting head and infrared receiving terminal, that, which may result in infrared ray, can not be delivered to infrared receiving terminal
Place, then the problem of remote control fails just occurs.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide a kind of base that will not be influenceed by barrier
In RFID intelligent electrical apparatus release.
To achieve the above object, the invention provides following technical scheme：A kind of intelligent electrical apparatus release based on RFID, including
Intelligent control board and tripping mechanism, the intelligent control board are connected with tripping mechanism, wherein, intelligent control board sends control signal
To tripping mechanism, it is set to complete trip action, while detecting trip status, the intelligence in real time by the sensor in tripping mechanism
Energy control panel includes：
Switching power supply, is coupled to outside civil power, for the AC power of outside civil power to be converted into stable direct current
Exported after electricity as power supply；
Detecting signal unit, the detecting signal unit includes iron core transformer, RC wave filters and AC/DC changeover switch, described
Iron core transformer and outside civil power mutual inductance, export induced signal, the iron core transformer, RC wave filters and AC/DC changeover switch according to
Secondary series connection, RC wave filters are used to be input in AC/DC changeover switch after being filtered induced signal, and AC/DC changeover switch is used for
Filtered induced signal is converted into export after direct current signal；
Microprocessor unit, is coupled to AC/DC changeover switch, is further coupled to tripping mechanism, defeated to receive AC/DC changeover switch
The direct current signal gone out, and output display signal after handling direct current signal；
Rf receiver unit, is coupled to microprocessor unit, for being communicated with extraneous radio frequency transmitting element, to receive
The trip signal of extraneous radio frequency transmitting element output, and be transferred in microprocessor unit so that microprocessor unit output is driven
Dynamic signal is threaded off to tripping mechanism；
Display unit, is coupled to microprocessor unit, shows signal for receiving, and show.
As a further improvement on the present invention, the rf receiver unit includes：
There is input pin, carrier wave detection pin, address matching pin and output to draw by radio frequency chip U1, radio frequency chip U1
Pin, the input pin includes the first input pin and the second input pin, and second input pin is coupled with after resistance R10
Couple the electric capacity C12 being serially connected and electric capacity C13 is followed by antenna, second input pin has been also coupled to be grounded after electric capacity C9, coupling
It is connected to after electric capacity C10 and is coupled to the first input pin, first input pin is coupled with after electric capacity C11 and is grounded, and has been also coupled to
The one end of resistance R10 relative to the second input pin is coupled to after resistance R11, first input pin is coupled with what is be serially connected
It is grounded after resistance R12 and electric capacity C14, the carrier wave detection pin is coupled to microprocessor unit, is arrived for outgoing carrier signal
In microprocessor unit, the address matching pin is coupled to microprocessor unit, for OPADD signal to microprocessor
In unit, the output pin is coupled to microprocessor unit, for exporting in trip signal to microprocessor unit.
As a further improvement on the present invention, the carrier wave detection pin, address matching pin and output pin and Wei Chu
Connection isolating device is coupled between reason device unit, the connection isolating device includes connecting line and the screen being socketed on connecting line
Shell is covered, the connecting line includes carrier wire, address wire and output line, and the shielding case is provided with three, respectively one-to-one set
It is connected on carrier wire, address wire and output line, the shielding case includes fixed on shroud sleeve, the lateral wall of the shroud sleeve
Connection sheet is connected with, the one side of the connection sheet, which is provided with, to be used to paste the glue on electrical apparatus release shell, the housing
Cylinder includes outer barrel and inner cylinder, and the outer barrel and inner cylinder are coaxially disposed, outer wall and the outer tube inner wall fixation bonded to each other of the inner cylinder,
The outer barrel is metal cylinder, and inner cylinder is plastic barrel.
As a further improvement on the present invention, the AC/DC changeover switch includes：
Modulus conversion chip U2, modulus conversion chip U2 has ac voltage signal input, output end, the output
End is coupled with microprocessor unit, and the ac voltage signal input is coupled with after electric capacity C1 and is grounded, and has been also coupled to resistance R1
The primary side of iron core transformer is coupled to afterwards, and the resistance R1 is coupled with voltage stabilizing relative to the other end of iron core transformer secondary side
It is grounded after pipe D1 and voltage-stabiliser tube D2, anode and the resistance R1 of the voltage-stabiliser tube D1 are coupled, and the negative electrode of negative electrode and voltage-stabiliser tube D2 is coupled,
The plus earth of the voltage-stabiliser tube D2, wherein resistance R1 and electric capacity C1 constitute RC wave filters.
As a further improvement on the present invention, the iron core transformer includes voltage transformer T1 and voltage transformer T2,
The primary side of the voltage transformer T1 and outside city electric coupling, primary side and voltage transformer T2 primary side are coupled, described
Voltage transformer T2 primary side is coupled with resistance R1.
As a further improvement on the present invention, the tripping mechanism includes：
Light coupling relay U4, light coupling relay U4 have an input circuit and output loop, and the input circuit includes the
One end and the second end, the output loop include the 3rd end and the 4th end, and the second end is coupled with microprocessor unit, and the described 3rd
End is coupled to power supply, and the 4th end is coupled with after triode Q1 and is grounded, and base stage and the 4th end of the triode Q1 are coupled, emitter stage
Ground connection, the also zero line with outside civil power couple；
Relay PL, relay PL include coil and switch, and one end of the switch is coupled with resistance R3 and is coupled to light
Coupling relay U4 first end, the other end of the switch is coupled to outside live wire, and one end of the coil is coupled with diode
Triode Q1 colelctor electrode is coupled to after D4, the negative electrode of the diode D4 is coupled to one end of coil, and anode is coupled to three poles
Pipe Q1 colelctor electrode.
Beneficial effects of the present invention, pass through the setting of switching power supply, it is possible to the effective exchange by outside civil power
Electricity is converted into exporting after galvanic current, is powered as power supply to intelligent control board, and by the setting of detecting signal unit,
The voltage signal or current signal on the outside civil power of detection just can be effectively realized, the signal detected is then exported, and
Detecting signal unit is arranged to iron core transformer, it is possible to by iron core transformer and outside civil power electric wire mutual inductance, by outside
Exported after voltage or the electric current conversion of civil power, pass through the setting of RC wave filters, it is possible to effectively iron core transformer is exported
Voltage or electric current after conversion are filtered effect, effectively filter out clutter above, and setting by AC/DC changeover switch
Put, it is possible to which the alternating voltage alternating current after converting after filtering changes into DC voltage or DC current is input to
In microprocessor unit, such microprocessor unit just can be handled effectively above-mentioned DC voltage or DC current
After be output in display unit, then shown by display unit, and the setting for passing through rf receiver unit, it is possible to have
Effect realize one receive it is outside exported by way of radio frequency come control instruction in microprocessor unit, microprocessor
Unit can just be threaded off according to the control instruction control tripping mechanism received, so realize what a remote control was threaded off
Effect, radio communication is make use of well can pass through the characteristic of barrier, effectively avoid in the prior art using red
There is barrier so that intelligent electrical apparatus release can not be received well between infrared emitting head and reception head caused by outside line communication
A series of problem caused by operational order.
Brief description of the drawings
Fig. 1 is the module money figure of the intelligent electrical apparatus release based on RFID of the present invention；
Fig. 2 is the circuit diagram of detecting signal unit in Fig. 1；
Fig. 3 is the circuit diagram of rf receiver unit in Fig. 1
Fig. 4 is the circuit diagram of tripping mechanism；
Fig. 5 is the overall structure figure of connection isolating device.
Embodiment
The present invention is described in further detail below in conjunction with the embodiment given by accompanying drawing.
Referring to figs. 1 to shown in 5, a kind of intelligent electrical apparatus release based on RFID of the present embodiment, including intelligent control board and de-
Buckle mechanism, the intelligent control board is connected with tripping mechanism, wherein, intelligent control board sends control signals to tripping mechanism, makes
It completes trip action, while detecting trip status in real time by the sensor in tripping mechanism, the intelligent control board includes：
Switching power supply 1, is coupled to outside civil power, for the AC power of outside civil power to be converted into stable direct current
Exported after electricity as power supply；
Detecting signal unit 2, the detecting signal unit 2 includes iron core transformer 21, RC wave filters 22 and AC-DC conversion
Device 23, the iron core transformer 21 and outside civil power mutual inductance, export induced signal, the iron core transformer 21, RC wave filters 22
It is sequentially connected in series with AC/DC changeover switch 23, RC wave filters 22 are used to be input to AC/DC changeover switch after being filtered induced signal
In 23, AC/DC changeover switch 23 is used to be converted into filtered induced signal to export after direct current signal；
Microprocessor unit 3, is coupled to AC/DC changeover switch 23, is further coupled to tripping mechanism, to receive AC-DC conversion
The direct current signal that device 23 is exported, and output display signal after handling direct current signal；
Rf receiver unit 4, is coupled to microprocessor unit 3, for being communicated with extraneous radio frequency transmitting element, to connect
The trip signal of extraneous radio frequency transmitting element output is received, and is transferred in microprocessor unit 3 so that microprocessor unit 3 is defeated
Go out drive signal to be threaded off to tripping mechanism；
Display unit 5, is coupled to microprocessor unit 3, and signal is shown for receiving, and shows, the present embodiment
Intelligent electrical apparatus release is during use, first by switching power supply 1 and outside city electric coupling, then pass through Switching Power Supply list
The transformation of member 1, it becomes possible to the effective AC conversion by outside civil power into a burning voltage direct current electricity output, this
Sample can serve as power input to detecting signal unit 2, microprocessor unit 3 and rf receiver unit 4 and display unit 5
Interior, such detecting signal unit 2, microprocessor unit 3 and rf receiver unit 4 and display unit 5 are electrically energized work, letter
Number detection unit 2 will work the alternating voltage or alternating current of the outside civil power of detection in real time, then by alternating voltage or
It is that alternating current is converted into being output in microprocessor unit 3 after DC voltage or DC current, microprocessor unit 3 will
This signal is received, is then shown by display unit 5, wherein the switching power supply 1 of the present embodiment is existing
Switching Power Supply, thus its operation principle and internal structure just repeat no more, and microprocessor unit 3 is STC15F2K60S2 list
The minimum system of piece machine, display unit 5 is LCD liquid crystal displays of the prior art, so realizes a detection voltage x current
And the effect shown, and when user needs remote control intelligent electrical apparatus release to thread off, it is only necessary to penetrated by outside one
Take place frequently emitter, is launched using this radiofrequency launcher in the radiofrequency signal road rf receiver unit 4 with instruction of threading off, then
Rf receiver unit 4 will receive this radiofrequency signal, and translate out the dropout instruction carried in radiofrequency signal and be sent to
In microprocessor unit 3, such microprocessor unit 3 will transmit a signal to tripping mechanism, and tripping mechanism will thread off, so
The effect that a remote control is threaded off just can be effectively realized, simultaneously because the communication between radiofrequency signal is to be not readily susceptible to
The influence of barrier, therefore compared in the prior art by the way of infrared ray carries out remote control dropout, would not be by
The problem of control signal can not be input in intelligent electrical apparatus release caused by the influence of barrier, and detected in detecting signal unit 2
During signal, first by the induction effect of iron core transformer 21, the voltage and current of the civil power of exchange is converted into low
The alternating voltage and alternating current of pressure, then pass through the setting of RC wave filters 22, it is possible to will convert into the alternating voltage of low pressure
An effective filter effect is carried out with alternating current, the clutter on alternating voltage and alternating current is filtered out, then by handing over
The setting of direct current transducer 23, by stable alternating voltage and alternating current be converted into DC voltage and DC current be input to it is micro-
In processor unit 3, such microprocessor unit 3 just can effectively receive DC voltage and DC current and by display
Unit 5 is shown, because the mutual inductance, the filtering of RC wave filters 22 and friendship that said process has passed through iron core transformer 21 are straight
The conversion of stream transformer 23, it becomes possible to completely get rid of the DC voltage and direct current recently entered in microprocessor unit 3
Incidental interference noise on electric current, this makes it possible to the accuracy for ensureing the signal that last microprocessor unit 3 is received, makes
Voltage and current numerical value can accurately and effectively be shown by obtaining display unit 5.
As a kind of improved embodiment, the rf receiver unit 4 includes：
There is input pin, carrier wave detection pin, address matching pin and output to draw by radio frequency chip U1, radio frequency chip U1
Pin, the input pin includes the first input pin and the second input pin, and second input pin is coupled with after resistance R10
Couple the electric capacity C12 being serially connected and electric capacity C13 is followed by antenna, second input pin has been also coupled to be grounded after electric capacity C9, coupling
It is connected to after electric capacity C10 and is coupled to the first input pin, first input pin is coupled with after electric capacity C11 and is grounded, and has been also coupled to
The one end of resistance R10 relative to the second input pin is coupled to after resistance R11, first input pin is coupled with what is be serially connected
It is grounded after resistance R12 and electric capacity C14, the carrier wave detection pin is coupled to microprocessor unit 3, is arrived for outgoing carrier signal
In microprocessor unit 3, the address matching pin is coupled to microprocessor unit 3, for OPADD signal to microprocessor
In device unit 3, the output pin is coupled to microprocessor unit 3, for exporting in trip signal to microprocessor unit 3,
Radiofrequency signal received by antenna can be received by the setting of radio frequency chip U1 input pin, and input pin is set
It is set to the first input pin and the second input pin, it is possible to receive radiofrequency signal using two pins, so just can be real
More data volumes are now received, and pass through electric capacity C12, electric capacity C13, electric capacity C9, electric capacity C10 and electric capacity C11 setting, it is possible to
It is effective to realize one for the effect of the radiofrequency signal one effective filtering clutter of progress received, it is ensured that to be input to radio frequency
The accuracy of chip U1 radiofrequency signal, and the setting of pin is detected by carrier wave, it can export and detect to microprocessor unit 3
The carrier frequency of radiofrequency signal out, such microprocessor unit 3 just may determine that the incidental instruction of this radiofrequency signal
Whether it is corresponding with intelligent electrical apparatus release, can so avoids the occurrence of and receive microprocessor caused by other radiofrequency signals
Unit 3 is issued a signal in tripping mechanism, causes the problem of misoperation occurs in tripping mechanism, and matches setting for pin by address
Put, when there are many intelligent electrical apparatus releases, it is possible to which address matches pin OPADD signal to microprocessor unit 3
Interior, the intelligent electrical apparatus release that microprocessor unit 3 will be according to corresponding to address signal searches out address just can so be realized and adopted
The effect of many intelligent electrical apparatus releases can be just controlled with a RF transmitter, while can also realize that one is precisely controlled
Effect.
As a kind of improved embodiment, the carrier wave detection pin, address matching pin and output pin with
Connection isolating device 6 is coupled between microprocessor unit 3, the connection isolating device 6 includes connecting line 61 and the company of being socketed in
Shielding case 62 in wiring 61, the connecting line 61 includes carrier wire 611, address wire 612 and output line 613, the shielding case
62 are provided with three, are socketed in correspondingly respectively on carrier wire 611, address wire 612 and output line 613, the shielding case 62
Including shroud sleeve 621, connection sheet 6213, the connection sheet 6213 are fixedly connected with the lateral wall of the shroud sleeve 621
One side be provided with and be used to paste glue on electrical apparatus release shell, the shroud sleeve 621 includes outer barrel 6211 and inner cylinder
6212, the outer barrel 6211 and inner cylinder 6212 are coaxially disposed, and the outer wall and the inwall of outer barrel 6211 of the inner cylinder 6212 are bonded to each other
Fixed, the outer barrel 6211 is metal cylinder, and inner cylinder 6212 is plastic barrel, because existing intelligent electrical apparatus release is all mounted in civil power
Beside electric wire, because civil power electric wire will produce magnetic field during energization, electric principle is given birth to according to magnetic, set in its vicinity
Electric wire will be easy to produce clutter, and carrier signal and address signal are for controlling the action of that intelligent electrical apparatus release to occupy ten
Divide consequence, if if having clutter inside carrier signal and address signal, may result in and sending remote control signal
When in intelligent electrical apparatus release, cause the problem of intelligent electrical apparatus release produces misoperation, therefore here by shielding case 62
Set, can effectively mask the magnetic field produced by outside civil power electric wire, just can so avoid carrier signal, address signal
The problem of being influenceed to produce clutter by outside civil power electric wire, and shielding case 62 is arranged to shroud sleeve 621, can be effective
The effect of a shielding is realized, and one-to-one corresponding sets shielding case on carrier wire 611, address wire 612 and output line 613
62, so beyond being influenceed caused by avoiding outside civil power electric wire, additionally it is possible to effectively avoid carrier wire 611, address wire 612
Influencing each other between output line 613, further avoids the problem of clutter occur in carrier signal and address signal, and will screen
Cover sleeve 621 and be arranged to outer barrel 6211 and inner cylinder 6212, outer barrel 6211 is arranged to metal cylinder, inner cylinder 6212 is arranged to plastics
Cylinder, it is possible to realize during shielding, outer barrel 6211 produces electric current with magnetic field mutual inductance, magnetic field is consumed, inner cylinder 6212
It will then completely cut off between the electric current produced on outer barrel 6211 and carrier wire 611, address wire 612 and output line 613 and come, so just can
It is enough further to realize shield effectiveness, further avoid carrier signal and the problem of address signal is influenceed by clutter.Make
For a kind of improved embodiment, the AC/DC changeover switch 23 includes：
Modulus conversion chip U2, modulus conversion chip U2 has ac voltage signal input, output end, the output
End is coupled with microprocessor unit 3, and the ac voltage signal input is coupled with after electric capacity C1 and is grounded, and has been also coupled to resistance R1
The primary side of iron core transformer 21 is coupled to afterwards, and the resistance R1 is coupled with relative to the other end of the primary side of iron core transformer 21
It is grounded after voltage-stabiliser tube D1 and voltage-stabiliser tube D2, anode and the resistance R1 of the voltage-stabiliser tube D1 are coupled, the negative electrode of negative electrode and voltage-stabiliser tube D2
Coupling, the plus earth of the voltage-stabiliser tube D2, wherein resistance R1 and electric capacity C1 composition RC wave filters 22, utilizes modulus conversion chip
U2 setting, it is possible to alternating voltage and alternating current are effectively converted into DC voltage and DC current, such microprocessor
Device unit 3 just can be identified effectively, and the setting for passing through output end, it is possible to achieve one is precisely controlled DC voltage and straight
Flow the effect of electric current output, compared to existing by the way of rectifier bridge rectification, the voltage and current degree of accuracy that rectification comes out
Higher, clutter is less, and passes through voltage-stabiliser tube D1 and voltage-stabiliser tube D2 setting, it is possible to which effective realize will enter into analog-to-digital conversion
The effect of one voltage stabilizing of voltage in chip U2, it is to avoid modulus conversion chip U2 burns asking for damage caused by input voltage is excessive
Topic.
As a kind of improved embodiment, the iron core transformer 21 includes voltage transformer T1 and mutual induction of voltage
Device T2, the voltage transformer T1 primary side and outside city electric coupling, primary side and voltage transformer T2 primary side are coupled,
The primary side of the voltage transformer T2 is coupled with resistance R1, because existing line voltage is higher, while intelligent electrical apparatus release
Volume is smaller in itself, therefore directly line voltage can not be carried out by way of setting a large-scale voltage transformer
Conversion, therefore voltage transformer T1 and voltage transformer T2 setting is used in the present embodiment, it is possible to realize and use two
Small-power transformer coordinates the mutual inductance effect for realizing high-power transformer, is well converted line voltage, Er Qie
During conversion, mutual inductance is twice passed through, thus just can effectively avoid because voltage unstable on mains supply is led
The problem of being input to modulus conversion chip U2 jitters of cause.
As a kind of improved embodiment, the tripping mechanism includes：
Light coupling relay U4, light coupling relay U4 have an input circuit and output loop, and the input circuit includes the
One end and the second end, the output loop include the 3rd end and the 4th end, and the second end couples with microprocessor unit 3, and described the
Three ends are coupled to power supply, and the 4th end is coupled with after triode Q1 and is grounded, and base stage and the 4th end of the triode Q1 are coupled, transmitting
Pole is grounded, and also the zero line with outside civil power is coupled；
Relay PL, relay PL include coil and switch, and one end of the switch is coupled with resistance R3 and is coupled to light
Coupling relay U4 first end, the other end of the switch is coupled to outside live wire, and one end of the coil is coupled with diode
Triode Q1 colelctor electrode is coupled to after D4, the negative electrode of the diode D4 is coupled to one end of coil, and anode is coupled to three poles
Pipe Q1 colelctor electrode, is to be gone to control outside mains circuit by relay PL switch during dropout, in the event of voltage
Electric current is normally inputted, and a high level is being exported by the computing of microprocessor unit 3, utilizes photoelectric coupling, the three of control NPN type
Pole pipe Q1, base stage is low level, then the adhesive of relay PL electromagnetism, switch closure, and outside mains circuit conducting, circuit is normally transported
Turn；If generation is short-circuit, overload, under-voltage input is exporting a low level by the computing of microprocessor unit 3, is utilizing photoelectricity
Coupling, controls the triode Q1 of NPN type, base stage is low level, then relay PL electromagnetism disconnects, and switches off, outside civil power electricity
Road disconnects, and so just can effectively realize a short circuit, overloads, the effect of undervoltage tripping, and simple in construction, the biography of signal
There is coupling during defeated, anti-interference is stronger, and by diode D4 effect, the process that can be cut-off in coil
In, the effect of an aerial drainage is carried out to coil, it is to avoid mutual inducing current is produced after coil blackout and is input in triode Q1, is caused
Triode Q1 the problem of damage.
In summary, the intelligent electrical apparatus release based on RFID of the present embodiment, it is by the setting of rf receiver unit 4, just
An effect for receiving external radio-frequency signal and controlling tripping mechanism to thread off can be effectively realized, without existing skill
Ultrared mode is used in art, because the problem of signal can not be transmitted caused by barrier.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of intelligent electrical apparatus release based on RFID, including intelligent control board and tripping mechanism, the intelligent control board is with threading off
Mechanism is connected, wherein, intelligent control board sends control signals to tripping mechanism, it is completed trip action, while by threading off
In-house sensor detects trip status in real time, it is characterised in that：The intelligent control board includes：
Switching power supply (1), is coupled to outside civil power, for the AC power of outside civil power to be converted into galvanic current
After export as power supply；
Detecting signal unit (2), the detecting signal unit (2) includes iron core transformer (21), RC wave filters (22) and alternating current-direct current
Converter (23), the iron core transformer (21) and outside civil power mutual inductance, output induced signal, the iron core transformer (21),
RC wave filters (22) and AC/DC changeover switch (23) are sequentially connected in series, and RC wave filters (22) are rear defeated for being filtered to induced signal
Enter into AC/DC changeover switch (23), AC/DC changeover switch (23) is used to filtered induced signal being converted into after direct current signal
Output；
Microprocessor unit (3), is coupled to AC/DC changeover switch (23), is further coupled to tripping mechanism, to receive AC-DC conversion
The direct current signal of device (23) output, and output display signal after handling direct current signal；Rf receiver unit (4), coupling
In microprocessor unit (3), for being communicated with extraneous radio frequency transmitting element, to receive the output of extraneous radio frequency transmitting element
Trip signal, and be transferred in microprocessor unit (3) so that microprocessor unit (3) output drive signal to tripping mechanism
Threaded off；
Display unit (5), is coupled to microprocessor unit (3), shows signal for receiving, and show.
2. the intelligent electrical apparatus release according to claim 1 based on RFID, it is characterised in that：The rf receiver unit (4)
Including：
Radio frequency chip U1, radio frequency chip U1 have input pin, carrier wave detection pin, address matching pin and output pin,
The input pin includes the first input pin and the second input pin, and second input pin is coupled with coupling after resistance R10
Meet the electric capacity C12 being serially connected and electric capacity C13 is followed by antenna, second input pin has been also coupled to be grounded after electric capacity C9, coupling
Have and the first input pin is coupled to after electric capacity C10, first input pin is coupled with after electric capacity C11 and is grounded, and has been also coupled to electricity
The one end of resistance R10 relative to the second input pin is coupled to after resistance R11, first input pin is coupled with the electricity being serially connected
Hinder and be grounded after R12 and electric capacity C14, the carrier wave detection pin is coupled to microprocessor unit (3), is arrived for outgoing carrier signal
In microprocessor unit (3), the address matching pin is coupled to microprocessor unit (3), for OPADD signal to micro-
In processor unit (3), the output pin is coupled to microprocessor unit (3), for exporting trip signal to microprocessor
In unit (3).
3. the intelligent electrical apparatus release according to claim 2 based on RFID, it is characterised in that：The carrier wave detection pin,
Location, which matches to be coupled between pin and output pin and microprocessor unit (3), is connected isolating device (6), the connection isolation dress
Putting (6) includes connecting line (61) and the shielding case (62) being socketed on connecting line (61), and the connecting line (61) includes carrier wire
(611), address wire (612) and output line (613), the shielding case (62) are provided with three, are socketed in load correspondingly respectively
On swash (611), address wire (612) and output line (613), the shielding case (62) includes shroud sleeve (621), the shielding
Connection sheet (6213) is fixedly connected with the lateral wall of sleeve (621), the one side of the connection sheet (6213), which is provided with, to be used for
The glue on electrical apparatus release shell is pasted, the shroud sleeve (621) includes outer barrel (6211) and inner cylinder (6212), the outer barrel
(6211) it is coaxially disposed with inner cylinder (6212), outer wall and the fixation bonded to each other of outer barrel (6211) inwall of the inner cylinder (6212),
The outer barrel (6211) is metal cylinder, and inner cylinder (6212) is plastic barrel.
4. the intelligent electrical apparatus release based on RFID according to claim 1 or 2 or 3, it is characterised in that：The AC-DC conversion
Device (23) includes：
Modulus conversion chip U2, modulus conversion chip U2 have an ac voltage signal input, output end, the output end with
Microprocessor unit (3) is coupled, and the ac voltage signal input is coupled with after electric capacity C1 and is grounded, and has been also coupled to after resistance R1
The primary side of iron core transformer (21) is coupled to, the resistance R1 is coupled relative to the other end of iron core transformer (21) primary side
Have and be grounded after voltage-stabiliser tube D1 and voltage-stabiliser tube D2, anode and the resistance R1 of the voltage-stabiliser tube D1 are coupled, the moon of negative electrode and voltage-stabiliser tube D2
Pole is coupled, the plus earth of the voltage-stabiliser tube D2, wherein resistance R1 and electric capacity C1 composition RC wave filters (22).
5. the intelligent electrical apparatus release according to claim 4 based on RFID, it is characterised in that：Iron core transformer (21) bag
Include voltage transformer T1 and voltage transformer T2, the voltage transformer T1 primary side and outside city electric coupling, primary side with
Voltage transformer T2 primary side coupling, primary side and the resistance R1 of the voltage transformer T2 are coupled.
6. the intelligent electrical apparatus release based on RFID according to claim 1 or 2 or 3, it is characterised in that：The tripping mechanism bag
Include：
Light coupling relay U4, light coupling relay U4 have input circuit and output loop, and the input circuit includes first end
With the second end, the output loop includes the 3rd end and the 4th end, and the second end is coupled with microprocessor unit (3), and the described 3rd
End is coupled to power supply, and the 4th end is coupled with after triode Q1 and is grounded, and base stage and the 4th end of the triode Q1 are coupled, emitter stage
Ground connection, the also zero line with outside civil power couple；
Relay PL, relay PL include coil and switch, one end of the switch be coupled with resistance R3 be coupled to optocoupler after
Electrical equipment U4 first end, the other end of the switch is coupled to outside live wire, and one end of the coil is coupled with after diode D4
Triode Q1 colelctor electrode is coupled to, the negative electrode of the diode D4 is coupled to one end of coil, and anode is coupled to triode Q1
Colelctor electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710594744.4A CN107272498A (en) | 2017-07-21 | 2017-07-21 | A kind of intelligent electrical apparatus release based on RFID |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710594744.4A CN107272498A (en) | 2017-07-21 | 2017-07-21 | A kind of intelligent electrical apparatus release based on RFID |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107272498A true CN107272498A (en) | 2017-10-20 |
Family
ID=60079269
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710594744.4A Pending CN107272498A (en) | 2017-07-21 | 2017-07-21 | A kind of intelligent electrical apparatus release based on RFID |
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| Country | Link |
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| CN (1) | CN107272498A (en) |
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