CN207232249U - Subscribers' line checking device - Google Patents
Subscribers' line checking device Download PDFInfo
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- CN207232249U CN207232249U CN201721207094.5U CN201721207094U CN207232249U CN 207232249 U CN207232249 U CN 207232249U CN 201721207094 U CN201721207094 U CN 201721207094U CN 207232249 U CN207232249 U CN 207232249U
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Abstract
The utility model is suitable for technical field of electric power detection, there is provided a kind of subscribers' line checking device, including：Characteristic signal generation unit, is electrically connected with user to be detected exchange, for triggering generation characteristic signal according to alternating current；The characteristic signal generation unit can trigger a variety of characteristic signals of generation；Trigger element, including multiple triggering buttons, each button that triggers correspond to a kind of characteristic signal of triggering；Detecting signal unit, the firewire or zero curve connect with user's electric energy meter to be detected is connected, and for detecting the current waveform of the firewire or zero curve, there are during the characteristic signal, testing result is being shown in detecting the current waveform.Above-mentioned subscribers' line checking device need not power off the i.e. correspondence of verifiable user and circuit, improve the accuracy rate of subscribers' line verification.
Description
Technical field
The utility model belongs to technical field of electric power detection, more particularly to a kind of subscribers' line checking device.
Background technology
With the popularization of intelligent grid, the failure replacement and batch of intelligent electric energy meter are transformed into for electric company's work
Important content.It needs to be determined that correspondence between ammeter and user before transforming the failure replacement of ammeter and batch.It is existing
There is technology to need to judge the correspondence between ammeter and user by the way that the master switch of user to be broken to the change of observation ammeter,
There are problems with for the above method：(1) when around other users are also breaking master switch, testing result easily malfunctions, accurately
Degree is not high；(2) user's normal electricity consumption is influenced.
Utility model content
In view of this, the utility model embodiment provides a kind of subscribers' line checking device, to solve in the prior art
Accuracy it is not high and influence user power utilization the problem of.
The utility model embodiment provides a kind of subscribers' line checking device, including：
Characteristic signal generation unit, is electrically connected with user to be detected exchange, for triggering generation feature letter according to alternating current
Number；The characteristic signal generation unit can trigger a variety of characteristic signals of generation；
Trigger element, including multiple triggering buttons, each button that triggers correspond to a kind of characteristic signal of triggering；
Detecting signal unit, the firewire or zero curve connect with user's electric energy meter to be detected are connected, described for detecting
The current waveform of firewire or zero curve, there are during the characteristic signal, testing result is being shown in detecting the current waveform.
Optionally, the characteristic signal generation unit includes power conversion module, single chip control module, Phototube Coupling guarantor
Protect module and electric current injection module；
The power conversion module, is connected with the single chip control module, for user's alternating current to be converted into direct current
Electricity is simultaneously powered for the single chip control module；
The single chip control module, is connected with the Phototube Coupling protection module, for being controlled according to triggering button
The electric current injection module produces corresponding characteristic signal；
The Phototube Coupling protection module, is connected with the electric current injection module, defeated for completing single chip control module
It is mutually isolated between the electric signal that the electric signal and electric current injection module gone out produces；
The electric current injection module, is connected with the Phototube Coupling protection module, for producing feature electricity on alternating current
Stream.
Optionally, the single chip control module includes：First MSP430 chips, first resistor, second resistance and three poles
Pipe；
The first MSP430 chips are connected with one end of the second resistance, the other end of the second resistance with it is described
The base stage connection of triode；
One end of the first resistor is electrically connected with the output terminal of the power conversion module, the other end and the photoelectricity every
Input terminal from protection module is electrically connected；
The collector of the triode is electrically connected with the input terminal of the Phototube Coupling protection module, emitter ground connection.
Optionally, the Phototube Coupling protection module includes：
MOC3041 chips, the first pin are connected with the first resistor, and second pin and the collector of the triode connect
Connect, the 3rd pin and the 5th pin are hanging, and the input terminal of the 4th pin and the 6th pin and the electric current injection module is electrically connected
Connect.
Optionally, the electric current injection module includes：3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, first
Capacitance and silicon-controlled；
The first silicon-controlled pin is connected by the 3rd resistor with the 6th pin of the MOC3041 chips,
Also it is connected with the 5th resistance and the 6th resistance；The silicon-controlled second pin by the 4th resistance with it is described
The 4th pin connection of MOC3041 chips, is also connected with firewire；The of the 3rd silicon-controlled pin and the MOC3041
Six pins connect；
The other end of 5th resistance is connected with the cathode of first capacitance；
The other end of 6th resistance is connected with zero curve；
The anode of first capacitance is connected with firewire.
Optionally, the detecting signal unit includes current transformer, current collection circuit and the 2nd MSP430 chips；
The current transformer, the firewire or zero curve connect with user's electric energy meter to be detected is connected, for real-time gathering line
Electric current on road；
The current collection circuit, is connected with the 2nd MSP430 chips, for gather the current transformer
Electric current is converted to the voltage signal that the 2nd MSP430 chips can identify；
2nd MSP430 chips, are connected with the current collection circuit, for judging to whether there is characteristic signal on circuit
And the type of characteristic signal.
Optionally, the current collection circuit includes：Diode, the 7th resistance, the 8th resistance, operational amplifier, the 9th
Resistance, the tenth resistance, the 11st resistance, the 12nd resistance and the second capacitance；
The plus earth of the diode, anode are connected with the first end of the 7th resistance, and the of the 7th resistance
Two ends are connected with the 8th resistance, the other end ground connection of the 8th resistance；
The both ends of the diode are connected with the output terminal of the current transformer；
The output terminal of the operational amplifier is connected by the 12nd resistance with negative-phase input, negative supply termination
Ground, normal phase input end are connected by the tenth resistance with anode, normal phase input end also with the 9th resistance first
End connection, negative-phase input also pass through the 11st resistance eutral grounding, positive power source terminal connection battery cathode；The operational amplifier
Output terminal be electrically connected with the PA0 pins of the 2nd MSP430 chips；
Second capacitance one end is connected with the positive power source terminal of the operational amplifier, other end ground connection；
One end of 11st resistance is connected with the negative-phase input of the 12nd resistance and operational amplifier, another termination
Ground；
The second end of 9th resistance is electrically connected with the second end of the 7th resistance.
Optionally, the current collection circuit further includes：13rd resistance and the 3rd capacitance；
One end of 13rd resistance is connected with the output terminal of the operational amplifier, the other end and described second
The PA0 pins connection of MSP430 chips；
The cathode of 3rd capacitance is connected with the PA0 pins of the 2nd MSP430 chips, anode ground connection.
Optionally, the current collection circuit further includes：14th resistance, the 15th resistance, the 4th capacitance and the 5th electricity
Hold；
Wherein, the first end of the 14th resistance is connected with the second end of the 7th resistance, and the second end of the 14th resistance passes through
4th capacity earth, the first end of the second end of the 14th resistance also with the 15th resistance are connected, the second end of the 15th resistance
By the 5th capacity earth, the second end of the 15th resistance is also connected with the 9th resistance.
Optionally, the subscribers' line checking device, further includes：Multiple signal lamps, each signal lamp correspond to one
The triggering button.
Existing beneficial effect is the utility model embodiment compared with prior art：Characteristic signal generation unit is by touching
Send out the triggering of button to generate on the alternating current in user family to be detected and trigger the characteristic signal corresponding to button, then pass through letter
Number detection unit is connected with the firewire or zero curve of user's electric energy meter, to detect the current waveform on firewire or zero curve, when detecting
Current waveform it is consistent with the characteristic signal that characteristic signal generates when, it is determined that the correspondence between user and electric energy meter.Should
Device has the advantages that accurate quick easy to operate, while need not power off when in use so as to not interfere with the just common of user
Electricity.
Brief description of the drawings
, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing is briefly described needed in description, it should be apparent that, drawings in the following description are only that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure diagram for the subscribers' line checking device that the utility model embodiment provides；
Fig. 2 is the structure diagram for another subscribers' line checking device that the utility model embodiment provides；
Fig. 3 is the electrical block diagram for the characteristic signal generation unit that the utility model embodiment provides；
Fig. 4 is the structure diagram for the current collection circuit that the utility model embodiment provides.
Embodiment
In being described below, in order to illustrate rather than in order to limit, it is proposed that such as tool of particular system structure, technology etc
Body details, to understand thoroughly the utility model embodiment.However, it will be clear to one skilled in the art that there is no these
The utility model can also be realized in the other embodiments of detail.In other situations, omit to well-known system,
The detailed description of device, circuit and method, in case unnecessary details hinders the description of the utility model.
In order to illustrate technical solution described in the utility model, illustrated below by specific embodiment.
The subscribers' line checking device provided referring to Fig. 1, the utility model embodiment, including trigger element 100, feature letter
Number generation unit 200 and detecting signal unit 300.
Trigger element 100, including multiple triggering buttons, each button that triggers correspond to a kind of characteristic signal of triggering.
Characteristic signal generation unit 200, is electrically connected with user to be detected exchange, for triggering generation feature according to alternating current
Signal；The characteristic signal generation unit 200 can trigger a variety of characteristic signals of generation.
Detecting signal unit 300, the firewire or zero curve connect with user's electric energy meter to be detected is connected, for detecting
The current waveform of firewire or zero curve is stated, there are during the characteristic signal, testing result is being shown in detecting the current waveform.
Above-mentioned subscribers' line checking device, so that characteristic signal generation under the action of triggering button in trigger element 100
Unit 200 produces characteristic signal corresponding with triggering button, then the firewire of user's electric energy meter is measured by detecting signal unit 300
Or the current waveform on zero curve, when the current waveform of detection is consistent with the waveform that characteristic signal generation unit 200 produces
Judge that between user and electric energy meter be correspondence；When the ripple that the current waveform of detection is produced with characteristic signal generation unit 200
When shape is inconsistent, other triggering buttons are pressed, observe the ripple that the current waveform of detection is produced with characteristic signal generation unit 200
Whether shape is consistent.When the current waveform that the current waveform that is detected in the above method is produced with characteristic signal generation unit 200 not
When consistent, electric energy meter to be detected is replaced, until finding electric energy meter corresponding with user.The above method is in the case where that need not power off
It simply can quickly and accurately check the correspondence between user and electric energy meter.
Further, referring to Fig. 2, as a kind of embodiment, characteristic signal generation unit 200 can include power supply
Modular converter 201, single chip control module 202, Phototube Coupling protection module 203 and electric current injection module 204.
Specifically, power conversion module 201 is connected with single chip control module 202, for user's alternating current to be converted into
Direct current is simultaneously powered for single chip control module 202.Single chip control module 202 is connected with Phototube Coupling protection module 203, is used
In controlling the electric current injection module 204 to produce corresponding characteristic signal according to triggering button.Phototube Coupling protection module 203 and institute
State electric current injection module 204 to connect, for completing the electric signal and electric current injection module 204 of the output of single chip control module 202
It is mutually isolated between the electric signal of generation.Electric current injection module 204 is connected with Phototube Coupling protection module 203, for handing over
Characteristic current is produced in galvanic electricity.
Wherein, the input voltage of single chip control module 202 is less DC voltage, and user's alternating current to be detected is
220V, therefore, it is necessary to the 220V alternating currents in user family are converted to less DC voltage by power conversion module 201.
Referring to Fig. 3, in one embodiment, single chip control module 202 can include the first MSP430 chips, first resistor
R1, second resistance R2 and triode Q1.First MSP430 chips are connected by CON-A ports with one end of second resistance R2, the
The other end of two resistance R2 is connected with the base stage of triode Q1.One end of first resistor R1 and the output of power conversion module 201
End is electrically connected, and the other end is electrically connected with the input terminal of the Phototube Coupling protection module 203.The collector and photoelectricity of triode Q1
The input terminal of insulation blocking module 203 is electrically connected, emitter ground connection.Optionally, triode Q1 can be C9014, by microcontroller
Output current is amplified.Resistance R2 is input resistance, which should be arranged to larger resistance value so that the electricity of access triode Q1
Stream is smaller, while insertion loss is smaller.
Referring to Fig. 3, in one embodiment, Phototube Coupling protection module 203 can include MOC3041 chips.MOC3041 cores
First pin of piece is connected with first resistor R1, and second pin is connected with the collector of the triode Q1, the 3rd pin and
Five pins are hanging, and the 4th pin is electrically connected with the 6th pin with the input terminal of the electric current injection module 204.
Wherein, the electric signal of input is converted to optical signal by MOC3041 chips by light emitting diode, then passes through photosensitive tube
Convert optical signals to electric signal to be exported, since the above process is not electrically connected directly so that electric signal is transmitting
Also interference of other electric signals to single chip control module 202 can be isolated while going out.On the other hand, MOC3041 chips are also
Have the function that to coordinate to produce characteristic current with electric current injection module 204.
Referring to Fig. 3, in one embodiment, electric current injection module 204 can include：3rd resistor R3, the 4th resistance R4,
Five resistance R5, the 6th resistance R6, the first capacitance C1 and silicon-controlled.The 1st silicon-controlled pin by 3rd resistor R3 with it is described
The 6th pin connection of MOC3041 chips, is also connected with the 5th resistance R5 and the 6th resistance R6.The 3rd silicon-controlled pin passes through
The 4th resistance R4 is connected with the 4th pin of MOC3041 chips, is also connected with firewire.The 2nd silicon-controlled pin with
The 6th pin connection of MOC3041.The other end of 5th resistance R5 is connected with the cathode of the first capacitance C1；6th resistance R6
The other end be connected with zero curve；The anode of first capacitance C1 is connected with firewire.
Optionally, silicon-controlled is BTA16.3rd resistor R3's and the 4th resistance R4 act as limitation driving current.It is controllable
The input current of silicon needs that silicon-controlled normal work could be triggered within the specific limits, and the output current of MOC3041 chips cannot
Directly meet the silicon-controlled requirement for input current.Therefore, MOC3041 is limited using 3rd resistor R3 and the 4th resistance R4
The output current of chip, to meet the silicon-controlled requirement to input current.
In addition, the course of work of electric current injection module 204 is：Single chip control module 202 detects triggering by key pressing
When, corresponding characteristic signal is produced according to the Type Control MOC3041 chips of triggering button and silicon-controlled BTA16.For example, when single
When piece machine MSP430 detects that button one is pressed, then MOC3041 chips and silicon-controlled BTA16 is controlled to produce square-wave signal (herein
Square-wave signal is produced for the moment assuming that pushing button).Do not done in the present embodiment to triggering the number of button and the waveform of characteristic signal
Limitation.
Referring to Fig. 2, in one embodiment, detecting signal unit 300 includes current transformer 301, current collection circuit 302
With the 2nd MSP430 chips 303.
Specifically, firewire or zero curve that current transformer 301 is connect with user's electric energy meter to be detected are connected, for adopting in real time
Collect the electric current on circuit.Current collection circuit 302 is connected with the 2nd MSP430 chips 303, for by the Current Mutual Inductance
The electric current that device 301 gathers is converted to the voltage signal that the 2nd MSP430 chips 303 can identify.2nd MSP430 chips 303 with
The current collection circuit 302 connects, for judging the type on circuit with the presence or absence of characteristic signal and characteristic signal.
Wherein, the high current of firewire or zero curve can be converted into low current so as to fit in electric current by current transformer 301
Transmitted in 302 and the 2nd MSP403 chips of Acquisition Circuit.In addition, current transformer 301 also has the function that electrical isolation, in order to avoid
Cause danger in the directly high voltage of measurement firewire or zero curve.
Referring to Fig. 4, in one embodiment, current collection circuit 302 can include：Diode, the 7th resistance R7, the 8th electricity
Hinder R8, operational amplifier, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11, the 12nd resistance R12 and the second capacitance
C2。
The plus earth of diode, anode are connected with the first end of the 7th resistance R7, and the of the 7th resistance R7
Two ends are connected with the 8th resistance R8, the other end ground connection of the 8th resistance R8.The both ends of diode and the electric current are mutual
The output terminal connection of sensor 301.
Wherein, current transformer 301 by the current flowing resistance collected so that electric current is converted to voltage.
The output terminal of operational amplifier is connected by the 12nd resistance R12 with negative-phase input, negative power end ground connection, positive
Input terminal is connected by the tenth resistance R10 with anode, and first end of the normal phase input end also with the 9th resistance R9 is connected,
Negative-phase input is also grounded by the 11st resistance R11, positive power source terminal connection battery cathode.The output terminal of the operational amplifier
It is electrically connected with the PA0 pins of the 2nd MSP430 chips.
The positive power source terminal of second capacitance C2 one end and operational amplifier connects, other end ground connection.The one of 11st resistance R11
End is connected with the negative-phase input of the 12nd resistance R12 and operational amplifier, other end ground connection.The second of 9th resistance R9
End is electrically connected with the second end of the 7th resistance R7.
Wherein, operational amplifier, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11, the 12nd resistance R12 and
Second capacitance C2 constitutes an in-phase adder comparison circuit, the voltage that the electric current for current transformer to be exported is converted into
The voltage that reconvert is identified into suitable Chip Microcomputer A/D acquisition module.Optionally, the operational amplifier is TS941ILT.
Optionally, current collection circuit 302 can also include：13rd resistance R13 and the 3rd capacitance C3.
The first end of 13rd resistance R13 is connected with the output terminal of the operational amplifier, second end and described second
The PA0 pins connection of MSP430 chips.The cathode of 3rd capacitance C3 is connected with the second end of the 13rd resistance R13, anode ground connection.
Optionally, current collection circuit 302 can also include：14th resistance R14, the 15th resistance R15, the 4th capacitance
C4 and the 5th capacitance C5.Wherein, the first end of the 14th resistance R14 is connected with the second end of the 7th resistance R7, the 14th resistance
The second end of R14 is grounded by the 4th capacitance C4, the first end of the second end of the 14th resistance R14 also with the 15th resistance R15
Connection, the second end of the 15th resistance R15 are grounded by the 5th capacitance C5, and the second end of the 15th resistance R15 is also electric with the 9th
Hinder R9 connections.
Referring to Fig. 4, in one embodiment, the 2nd MSP430 chips 303 are obtained by PA0 mouthfuls from current collection circuit 302
Electric current, judges to whether there is characteristic signal in circuit by program, and then the type of judging characteristic signal.For example, work as user
Push button for the moment, characteristic signal generation unit 200 normally produces square-wave signal and (produces square wave letter for the moment assuming that pushing button
Number), detecting signal unit 300 detects existing characteristics signal in circuit by the 2nd MSP430 chips 303 and characteristic signal is
During square-wave signal, numeral " 1 " is shown on charactron.
Further, above-mentioned subscribers' line checking device further includes multiple signal lamps, and each signal lamp corresponds to one
The triggering button.
Wherein, after subscribers' line checking device is electrically connected with being exchanged in user family to be measured, one in multiple buttons is selected
A to press key pressing, if detecting, the corresponding signal lamp of the button lights, then it represents that characteristic signal generation unit 200 is by feature
Electric current is injected into 220V alternating currents.
Above-mentioned subscribers' line checking device, characteristic signal generation unit 200 are existed by the triggering of button in trigger element 100
Characteristic signal of the generation corresponding to triggering button on alternating current in user family to be detected, then pass through detecting signal unit 300
It is connected with the firewire or zero curve of user's electric energy meter, to detect the current waveform on firewire or zero curve, when the current waveform detected
When consistent with the characteristic signal of characteristic signal generation, it is determined that be correspondence between user and electric energy meter, realizing to break
The correspondence between user and electric energy meter simply can be quickly and accurately checked in the case of electricity.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each work(
Can unit, module division progress for example, in practical application, can be as needed and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device are divided into different functional units or module, more than completion
The all or part of function of description.Each functional unit, module in embodiment can be integrated in a processing unit, also may be used
To be that unit is individually physically present, can also two or more units integrate in a unit, it is above-mentioned integrated
Unit can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.In addition, each function list
Member, the specific name of module are not limited to the protection domain of the application also only to facilitate mutually distinguish.Said system
The specific work process of middle unit, module, may be referred to the corresponding process in preceding method embodiment, details are not described herein.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and is not described in detail or remembers in some embodiment
The part of load, may refer to the associated description of other embodiments.
Those of ordinary skill in the art may realize that each exemplary list described with reference to the embodiments described herein
Member and algorithm steps, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, application-specific and design constraint depending on technical solution.Professional technician
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The scope of the utility model.
In embodiment provided by the utility model, it should be understood that disclosed device, can be by others side
Formula is realized.For example, device embodiment described above is only schematical, for example, the division of the module or unit, only
Only a kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can be tied
Another system is closed or is desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or discussed
Mutual coupling or direct-coupling or communication connection can be the INDIRECT COUPLINGs or logical by some interfaces, device or unit
News connection, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
In network unit.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the utility model can be integrated in a processing unit,
Can be that unit is individually physically present, can also two or more units integrate in a unit.It is above-mentioned integrated
Unit can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
Embodiment described above is only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to before
Embodiment is stated the utility model is described in detail, it will be understood by those of ordinary skill in the art that：It still can be with
Modify to the technical solution described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；And
These modifications are replaced, and the essence of appropriate technical solution is departed from the spirit of various embodiments of the utility model technical solution
And scope, it should be included within the scope of protection of this utility model.
Claims (10)
- A kind of 1. subscribers' line checking device, it is characterised in that including：Characteristic signal generation unit, is electrically connected with user to be detected exchange, for triggering generation characteristic signal according to alternating current；Institute The a variety of characteristic signals of generation can be triggered by stating characteristic signal generation unit；Trigger element, including multiple triggering buttons, each button that triggers correspond to a kind of characteristic signal of triggering；Detecting signal unit, the firewire or zero curve connect with user's electric energy meter to be detected is connected, for detecting the firewire Or the current waveform of zero curve, there are during the characteristic signal, showing testing result in detecting the current waveform.
- 2. subscribers' line checking device according to claim 1, it is characterised in that the characteristic signal generation unit includes Power conversion module, single chip control module, Phototube Coupling protection module and electric current injection module；The power conversion module, is connected with the single chip control module, for user's alternating current to be converted into direct current simultaneously Power for the single chip control module；The single chip control module, is connected with the Phototube Coupling protection module, described in being controlled according to triggering button Electric current injection module produces corresponding characteristic signal；The Phototube Coupling protection module, is connected with the electric current injection module, for completing single chip control module output It is mutually isolated between the electric signal that electric signal and electric current injection module produce；The electric current injection module, is connected with the Phototube Coupling protection module, for producing characteristic current on alternating current.
- 3. subscribers' line checking device according to claim 2, it is characterised in that the single chip control module includes： First MSP430 chips, first resistor, second resistance and triode；The first MSP430 chips are connected with one end of the second resistance, the other end of the second resistance and three pole The base stage connection of pipe；One end of the first resistor is electrically connected with the output terminal of the power conversion module, and the other end is protected with the Phototube Coupling The input terminal for protecting module is electrically connected；The collector of the triode is electrically connected with the input terminal of the Phototube Coupling protection module, emitter ground connection.
- 4. subscribers' line checking device according to claim 3, it is characterised in that the Phototube Coupling protection module bag Include：MOC3041 chips, the first pin are connected with the first resistor, and second pin is connected with the collector of the triode, 3rd pin and the 5th pin are hanging, and the 4th pin is electrically connected with the 6th pin with the input terminal of the electric current injection module.
- 5. subscribers' line checking device according to claim 4, it is characterised in that the electric current injection module includes：The Three resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first capacitance and silicon-controlled；The first silicon-controlled pin is connected by the 3rd resistor with the 6th pin of the MOC3041 chips, also with 5th resistance is connected with the 6th resistance；The silicon-controlled second pin by the 4th resistance with it is described The 4th pin connection of MOC3041 chips, is also connected with firewire；The of the 3rd silicon-controlled pin and the MOC3041 Six pins connect；The other end of 5th resistance is connected with the cathode of first capacitance；The other end of 6th resistance is connected with zero curve；The anode of first capacitance is connected with firewire.
- 6. subscribers' line checking device according to claim 1, it is characterised in that the detecting signal unit includes electric current Mutual inductor, current collection circuit and the 2nd MSP430 chips；The current transformer, the firewire or zero curve connect with user's electric energy meter to be detected are connected, for gathering circuit in real time Electric current；The current collection circuit, is connected with the 2nd MSP430 chips, for the electric current for gathering the current transformer Be converted to the voltage signal that the 2nd MSP430 chips can identify；The 2nd MSP430 chips, are connected with the current collection circuit, for judging to whether there is characteristic signal on circuit And the type of characteristic signal.
- 7. subscribers' line checking device according to claim 6, it is characterised in that the current collection circuit includes：Two Pole pipe, the 7th resistance, the 8th resistance, operational amplifier, the 9th resistance, the tenth resistance, the 11st resistance, the 12nd resistance and Two capacitances；The plus earth of the diode, anode are connected with the first end of the 7th resistance, the second end of the 7th resistance It is connected with the 8th resistance, the other end ground connection of the 8th resistance；The both ends of the diode are connected with the output terminal of the current transformer；The output terminal of the operational amplifier is connected by the 12nd resistance with negative-phase input, negative power end ground connection, just Phase input terminal is connected by the tenth resistance with anode, and normal phase input end also connects with the first end of the 9th resistance Connect, negative-phase input also passes through the 11st resistance eutral grounding, positive power source terminal connection battery cathode；The operational amplifier it is defeated Outlet is electrically connected with the PA0 pins of the 2nd MSP430 chips；Second capacitance one end is connected with the positive power source terminal of the operational amplifier, other end ground connection；One end of 11st resistance is connected with the negative-phase input of the 12nd resistance and operational amplifier, other end ground connection；The second end of 9th resistance is electrically connected with the second end of the 7th resistance.
- 8. subscribers' line checking device according to claim 7, it is characterised in that the current collection circuit further includes： 13rd resistance and the 3rd capacitance；One end of 13rd resistance is connected with the output terminal of the operational amplifier, the other end and the 2nd MSP430 cores The PA0 pins connection of piece；The cathode of 3rd capacitance is connected with the PA0 pins of the 2nd MSP430 chips, anode ground connection.
- 9. subscribers' line checking device according to claim 7, it is characterised in that the current collection circuit further includes： 14th resistance, the 15th resistance, the 4th capacitance and the 5th capacitance；Wherein, the first end of the 14th resistance is connected with the second end of the 7th resistance, and the second end of the 14th resistance passes through the 4th Capacity earth, the first end of the second end of the 14th resistance also with the 15th resistance are connected, and the second end of the 15th resistance passes through 5th capacity earth, the second end of the 15th resistance are also connected with the 9th resistance.
- 10. according to claim 1 to 9 any one of them subscribers' line checking device, it is characterised in that further include：Multiple signal lamps, each signal lamp correspond to a triggering button.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721207094.5U CN207232249U (en) | 2017-09-20 | 2017-09-20 | Subscribers' line checking device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721207094.5U CN207232249U (en) | 2017-09-20 | 2017-09-20 | Subscribers' line checking device |
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| CN207232249U true CN207232249U (en) | 2018-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632189A (en) * | 2017-09-20 | 2018-01-26 | 国家电网公司 | Subscribers' line checking device |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632189A (en) * | 2017-09-20 | 2018-01-26 | 国家电网公司 | Subscribers' line checking device |
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