CN105490706B - A kind of Split-type keyboard table carrier communication system - Google Patents
A kind of Split-type keyboard table carrier communication system Download PDFInfo
- Publication number
- CN105490706B CN105490706B CN201510767963.9A CN201510767963A CN105490706B CN 105490706 B CN105490706 B CN 105490706B CN 201510767963 A CN201510767963 A CN 201510767963A CN 105490706 B CN105490706 B CN 105490706B
- Authority
- CN
- China
- Prior art keywords
- circuit
- plc
- signal
- foot
- ihd
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The embodiment of the present invention provides a kind of Split-type keyboard table carrier communication system, including concentrator, several Split-type keyboard tables, several indoor display units, the indoor display unit are identical with the Split-type keyboard table quantity；The concentrator further comprises concentrator carrier module and communication module, the indoor display unit further comprises bottom plate carrier module, the Split-type keyboard table further comprises electric energy meter carrier module, the concentrator carrier module is connected by power line with the electric energy meter carrier module, the electric energy meter carrier module is connected by power line with bottom plate carrier module, and the communication module is used for electric energy meter data transmission to administrative center.It may be implemented while meeting single-point to single-point meter reading using technical solution provided in an embodiment of the present invention, moreover it is possible to the networking meter reading of compatible concentrator, convenient for the field management of ammeter.
Description
Technical field
The present invention relates to a kind of carrier communication field, in particular to a kind of Split-type keyboard table carrier communication system.
Background technique
Power-line carrier communication (PLC), which refers to, is modulated signal using dedicated modem, then will letter
Number it is loaded into the technology that data communication is carried out in existing power line.For the bandwidth angle used, power line carrier is divided into width
Band power line carrier and narrow-band power line carrier.The range in broadband in 2~30MHz, traffic rate usually in 1Mbit/s or more,
Mostly use various spread spectrums；And the range of narrowband is limited to 3~500kHz, traffic rate is less than 1Mbit/s, mostly uses common
PSK technology, DSSS technology etc..The maximum advantage that the power line carrier has is to rely on power line network, is not needed again
Wiring, construction, operating cost are low.
The Split-type keyboard table system of mainstream mainly uses power line carrier to carry out single-point pair on international market at present
The communication of single-point.The Split-type keyboard table system is made of indoor display unit and electric energy meter two parts, only the ground of the two
When location is completely the same, can just it communicate with each other.Wherein, the electric pole of Split electric energy meter (usually prepayment meter) installation outdoors
On, with anticreep stealing, and indoor display unit is installed in the user's home.User can pass through indoor display unit and Split type electric
Energy table carries out carrier communication, obtains power information, and carry out pre-payment operation.Simultaneously, it is contemplated that user overspends in advanced charge
After power-off, remain to be paid dues and restored electricity by indoor display unit, it is desirable that indoor display unit is adopted under power blackout situation
It is powered with battery, and carrier communication can be carried out with Split electric energy meter in the case.
But single-point to the copy reading mode of single-point and is inconvenient to be managed collectively, and does not also meet the hair of overseas Split-type keyboard table
Exhibition trend.
Summary of the invention
It, can be in view of this, the embodiment of the present invention is designed to provide a kind of Split-type keyboard table carrier communication system
It realizes while meeting single-point to single-point meter reading, moreover it is possible to the networking meter reading of compatible concentrator.
The embodiments of the present invention are implemented as follows, a kind of Split-type keyboard table carrier communication system, including concentrator, several
Split-type keyboard table, several indoor display units, the indoor display unit are identical with the Split-type keyboard table quantity；
The concentrator further comprises concentrator carrier module and communication module, and the indoor display unit further wraps
Bottom plate carrier module is included, the Split-type keyboard table further comprises electric energy meter carrier module, and the concentrator carrier module is logical
It crosses power line to be connected with the electric energy meter carrier module, the electric energy meter carrier module passes through power line and bottom plate carrier module phase
Even；The communication module is used for electric energy meter data transmission to administrative center.
Further, the electric energy meter carrier module is inserted into the back of PCB in the Split-type keyboard table table for inserting
The position of carrier module, the power unit of the bottom plate carrier module and indoor display unit on same pcb board, and with institute
The upper layer pcb board for stating indoor display unit is fitted together by the socket of a 10Pin.
Further, at an arbitrary position, the Split-type keyboard table installation is on utility poles, described for the concentrator installation
Indoor display unit is mounted on resident's family.
Further, which is characterized in that it further include copy controller, the copy controller further comprises copy controller carrier module,
The copy controller carrier module is connected by power line with electric energy meter carrier module and bottom plate carrier module.
Further, the bottom plate carrier module includes primary AC power supply circuit, spare dry cell power supply circuit, prevents
Back flow circuit, power control circuit, power supply switch circuit, IHD-PLC narrowband carrier circuit, IHD-PLC signal sending circuit,
IHD-PLC signal coupling circuit, IHD-PLC wave reception filtering circuit, IHD-PLC signal demodulating circuit, IHD-PLC signal are anti-tampering
Circuit, IHD-PLC indicator light circuit, IHD-PLC debugging serial port circuit, IHD-PLC burning program circuit, IHD-PLC light current electricity
Source interface, IHD-PLC light current communication interface, IHD-PLC forceful electric power power interface；
The primary AC power supply circuit and spare dry cell power supply circuit are respectively connected to power control circuit, power supply
Control circuit is connected to power supply switch circuit, and power supply switch circuit is connected to anti-back flow circuit, and IHD-PLC forceful electric power power interface connects
It is connected to the primary ac power circuit；IHD-PLC signal demodulating circuit is connected with IHD-PLC signal coupling circuit；
IHD-PLC forceful electric power power interface is connected with IHD-PLC signal coupling circuit, for powering；The demodulation of IHD-PLC signal
Circuit is connected with IHD-PLC signal coupling circuit；IHD-PLC narrowband carrier circuit by IHD-PLC wave reception filtering circuit with
IHD-PLC signal demodulating circuit is connected；IHD-PLC narrowband carrier circuit be connected by IHD-PLC signal sending circuit with
IHD-PLC signal coupling circuit is connected；
IHD-PLC indicator light circuit, IHD-PLC debugging serial port circuit, IHD-PLC burning program circuit, IHD-PLC light current
Power interface is connected with IHD-PLC narrowband carrier circuit respectively.
Further, alternating current is worked normally by switching power circuit power supply, and the switching power circuit is
TNY274 chip, the switching power circuit output+12V ± 0.7V voltage are steady by three ends for IHD-PLC signal sending circuit
5V is exported after depressor for carrier chip；
The dry cell power supply circuit, using the dry cell series-fed of two section AAA 1.8V, battery capacity 1.2AH leads to
LM2623 boosting IC is crossed to carry out boosting to 5.4V；
The anti-back flow circuit uses D5 and D16 two for preventing+12V voltage and the mutual influence of+5V voltage
Diode ensures the one-way flow of the 12V and 5V line current of the primary ac power circuit output end, and exports VHH；Make
Ensure the one-way flow of the 5.4V line current of spare dry cell power supply circuit boosting output end with D15 diode, and exports
5V1；Ensure the one-way flow of DVCC line current using a D11 diode, and exports 5V1；
The power control circuit is constituted using PMOS tube, and 5V1 passes through the PMOS tube, utilizes the switch of the PMOS tube
Effect controls the power supply of the light current power interface；
The power supply switch circuit, for being carried out to the primary AC power supply circuit and spare dry cell power supply circuit
Switching；Voltage inspection is carried out by the 3V voltage that+12V power supply that XC61CN2502MR voltage detecting IC provides exchange divides
It surveys, when there is 12V voltage, MAIN_DROP exports 5V high level, and when no 12V, MAIN_DROP exports low level, works as MAIN_
When DROP is+5V high level, the EN foot of Q3 conducting, LM2623 is low level, and spare dry cell power supply circuit does not work, when
When MAIN_DROP is low level, Q3 is disconnected, and the EN foot of LM2623 is pulled upward to battery supply, spare dry cell power supply circuit work；
Thus reach the mutual switching of the primary ac power circuit Yu spare dry cell power supply circuit；
The IHD-PLC narrowband carrier circuit includes SWNP270F chip；
The IHD-PLC signal sending circuit；Carrier signal SSCOUT is the signal of 5VTTL level, by SWNP270F core
24 foot SSCAOUT of piece are exported, and convert the signal to by the metal-oxide-semiconductor of the US6M2 of ROHM/ Romo Co., Ltd the side of more high level
Wave signal, the series LC for then carrying out L8, C26 to square-wave signal filter, the sine wave signal INOUT of last outputting standard；
The IHD-PLC signal coupling circuit, including safety capacitor C19, capacitance 0.15uF/310VAC；BT1 signal coupling
The magnetic core for closing transformer uses the model A102 of Yue Feng electronic material limited liability company production, size: 10 millimeters of outer diameter, hole
6 millimeters of diameter, 5 millimeters of thickness, coiling uses the bilayer or three layer insulation wire of diameter 0.3mm, and two windings are respectively around 17 circles, then cover heat
The draw is reinforced, and single winding inductance amount is measured under the conditions of 270kHz/0.1V in 700uH~1600uH；The VP1 wink of large triumphant electronics
State diode SMBJ22CA three parts composition, wherein C6 filters out exchange 50Hz signal, makes power line using isolating transformer BT1
Circuit and communication unit security isolation, and high-pass filter is constituted by the secondary inductance L of capacitor C6 and isolating transformer
Function, VP1 eliminate the moment impact voltage from power line, protect late-class circuit；The INOUT letter that signal coupling output receives
Number, and it is passed to wave reception filtering circuit；
The IHD-PLC wave reception filtering circuit receives the INOUT signal exported from signal coupling circuit, by bandpass filtering
Device and analog front circuit receive the spread spectrum communications signals on power line and carry out analog demodulator, final output fsk signal
To signal demodulating circuit；
The carrier signal FSK of the IHD-PLC signal demodulating circuit is inputted by 16 feet of SWNO4361 chip first, with 1
The 185kHz signal of foot input is mixed, and a difference frequency 85kHz and one and frequency 455kHz is obtained after mixing, due to being two
The aliasing of frequency is exported so waveform comparison at this time is mixed and disorderly by the 3rd foot, after the filtering of LT455BW ceramic filter, wave
Shape only retains and frequency 455kHz, is inputted by the 5th foot, restores data blank after limited range enlargement, frequency discrimination, audio amplification, by the 9th
Foot output filters out 455kHz signal after amplifying clipping using active power filtering, only retains data blank, is exported by 11 feet, passes through
After capacitive coupling, then by 12 feet input, after noise elimination indicates, by 13 feet export SSCIN signal to carrier chip 29 feet, this
When recovered digital signal, complete demodulating process；
The red light of IHD-PLC indicator light circuit is HL3, and anode connects 5V power supply, and cathode connects the 11st foot of SWNP270F chip
LED_TXD indicates that carrier wave has data transmission when blinking red lamp；Green light is HL4, and anode connects 5V power supply, and cathode connects SWNP270F core
13rd foot LED_RXD of piece indicates that carrier wave receives data when green light flashes；Serial ports is debugged with the 1 × 3 of 2.54mm single through-hole
As connector, the 20th foot and the 21st foot that pin is connected to SWNP270F chip are received and dispatched；Burning program interface in total 4
A pin, using the 1 × 5 of 2.54mm single through-hole as connector, anti-plug, specially removes the 4th foot in order to prevent, wherein the 1st
Foot indicates VDD=5V power supply；2nd foot indicates reset signal pin RESET；3rd foot indicates signal ground GND；4th foot is hanging；5th
Foot indicates data signal pin TOOL0；
The IHD-PLC light current power interface is the socket hole of the 2.54mm spacing of a 2PIN, and direct bonding wire connects battery
Spring base, the 1st foot are positive, and crus secunda is negative；
The IHD-PLC light current communication interface is using the 2 × 5 of 2.54mm double sockets as connector, with inserting for top plate
Needle matches；Wherein, the 1st foot is dry cell power supply voltage VBAT, and sense is output；2nd foot is hanging；3rd, 4 feet be to
The power supply 5V1 of top plate power supply, provides after being boosted by dry cell or 7805 provide, and sense is output；5th foot is top plate
Signal PLC_POWER is sent to IHD-PLC, controls the 5V power supply of IHD-PLC, sense is input；6th foot be top plate and
The transmission foot TXD_TOP of communication serial port between IHD-PLC, sense are input；7th foot is voltage detection signal MAIN_
DROP, sense are output；The reception foot RXD_TOP of 8th foot communication serial port between top plate and IHD-PLC, signal side
To for output；9th foot is that communicatedly VSS, the 10th foot are hanging；
IHD-PLC forceful electric power power interface is female with standard electric alternating current 220V power supply using the pad of 2 3*5mm as connector
Seat matches welding, and two pads are started to exchange fire the incoming end that line L and zero curve N are coupled as signal respectively.
Further, the electric energy meter carrier module includes M-PLC narrowband carrier circuit；M-PLC signal sending circuit；M-
PLC signal coupling circuit, M-PLC wave reception filtering circuit, M-PLC signal demodulating circuit, M-PLC indicator light circuit, M-PLC debugging
Serial port circuit, M-PLC burning program circuit, M-PLC forceful electric power power interface, M-PLC light current communication interface；The copy controller carrier wave
Module is identical as the electric energy meter carrier module circuit；
M-PLC forceful electric power power interface is connected with M-PLC signal coupling circuit, for powering and signal transmission；M-PLC signal
Demodulator circuit is connected with M-PLC signal coupling circuit；M-PLC narrowband carrier circuit passes through M-PLC wave reception filtering circuit and M-PLC
Signal demodulating circuit is connected；M-PLC narrowband carrier circuit passes through M-PLC signal sending circuit and M-PLC signal coupling circuit
It is connected；
M-PLC indicator light circuit, M-PLC debugging serial port circuit, M-PLC burning program circuit, M-PLC light current power interface
It is connected respectively with M-PLC narrowband carrier circuit.
Further, the M-PLC narrowband carrier circuit includes SWNP270F chip；
The M-PLC signal sending circuit；Carrier signal SSCOUT is the signal of 5VTTL level, by SWNP270F chip
24 foot SSCAOUT output, convert the signal to by the metal-oxide-semiconductor of the US6M2 of ROHM/ Romo Co., Ltd the square wave of more high level
Signal, the series LC for then carrying out L8, C26 to square-wave signal filter, the sine wave signal INOUT of last outputting standard；
The M-PLC signal coupling circuit, including safety capacitor C19, capacitance 0.15uF/310VAC；The coupling of BT1 signal
The magnetic core of transformer uses the model A102 of Yue Feng electronic material limited liability company production, size: 10 millimeters of outer diameter, aperture
6 millimeters, 5 millimeters of thickness, coiling uses the bilayer or three layer insulation wire of diameter 0.3mm, and two windings are respectively around 17 circles, then cover pyrocondensation
Pipe is reinforced, and single winding inductance amount is measured under the conditions of 270kHz/0.1V in 700uH~1600uH；The VP1 transient state of large triumphant electronics
Diode SMBJ22CA three parts composition, wherein C6 filters out exchange 50Hz signal, returns power line using isolating transformer BT1
Road and communication unit security isolation, and it is made of the secondary inductance L of capacitor C6 and isolating transformer the function of high-pass filter
Can, VP1 eliminates the moment impact voltage from power line, protects late-class circuit；The INOUT letter that signal coupling output receives
Number, and it is passed to wave reception filtering circuit；
The IHD-PLC wave reception filtering circuit receives the INOUT signal exported from signal coupling circuit, by bandpass filtering
Device and analog front circuit receive the spread spectrum communications signals on power line and carry out analog demodulator, final output fsk signal
To signal demodulating circuit；
The carrier signal FSK of the M-PLC signal demodulating circuit is inputted by 16 feet of SWNO4361 chip first, with 1
The 185kHz signal of foot input is mixed, and a difference frequency 85kHz and one and frequency 455kHz is obtained after mixing, due to being two
The aliasing of frequency is exported so waveform comparison at this time is mixed and disorderly by the 3rd foot, after the filtering of LT455BW ceramic filter, wave
Shape only retains and frequency 455kHz, is inputted by the 5th foot, restores data blank after limited range enlargement, frequency discrimination, audio amplification, by the 9th
Foot output filters out 455kHz signal after amplifying clipping using active power filtering, only retains data blank, is exported by 11 feet, passes through
After capacitive coupling, then by 12 feet input, after noise elimination indicates, by 13 feet export SSCIN signal to carrier chip 29 feet, this
When recovered digital signal, complete demodulating process；
The red light of M-PLC indicator light circuit is HL3, and anode connects 5V power supply, and cathode connects the 11st foot of SWNP270F chip
LED_TXD indicates that carrier wave has data transmission when blinking red lamp；Green light is HL4, and anode connects 5V power supply, and cathode connects SWNP270F core
13rd foot LED_RXD of piece indicates that carrier wave receives data when green light flashes；Serial ports is debugged with the 1 × 3 of 2.54mm single through-hole
As connector, the 20th foot and the 21st foot that pin is connected to SWNP270F chip are received and dispatched；Burning program interface in total 4
A pin, using the 1 × 5 of 2.54mm single through-hole as connector, anti-plug, specially removes the 4th foot in order to prevent, wherein the 1st
Foot indicates VDD=5V power supply；2nd foot indicates reset signal pin RESET；3rd foot indicates signal ground GND；4th foot is hanging；5th
Foot indicates data signal pin TOOL0；
M-PLC forceful electric power power interface is using the 2 × 4 of 2.54mm double sockets as connector, with state's net standard list in 2009
The forceful electric power socket of phase carrier power meter matches；Wherein, the 1st, 2 feet are fire-wire interfaces L, the 3rd, 4,5,6 feet it is hanging；7th, 8 feet are
Zero line interface N；The incoming end that firewire and zero curve are coupled as signal；
M-PLC light current communication interface is using the 2 × 6 of 2.54mm double sockets as connector, with state's net standard list in 2009
The light current socket of phase carrier power meter matches；Wherein, the 1st, 2 feet are the power supply VCC=12V that ammeter provides；3rd, 4 feet are communication
Ground VSS=GND；5th foot serial ports sends foot TXD, and sense is output；6th foot is the power vd D=5V that ammeter provides；7th
Foot MAC Address is arranged enabled foot SET, and when low level, carrier module MAC Address can be arranged；8th foot is that serial ports receives foot RXD,
Sense is input；9th foot is resetting pin RST, and sense is input；10th foot is hanging；11st foot is event detection pipe
Foot EVENOUT, sense is output, when event occurs, exports high level, request inquiry anomalous event；Inquiry finishes
Export low level；12nd foot is hanging.
It further, is copy controller carrier module, when welding R7 empties R10 when welding R10 and empty R7
When, it is electric energy meter carrier module.
Further, the communication module is GPRS module, 3G communication module or 4G communication module.
According to the above technical scheme, the embodiment of the present invention has the effect that the centralized meter-reading system by concentrator and multiple electricity
Energy table composition, is responsible for acquiring all electric energy meter data under the system by concentrator and is transmitted in management by transmission medium
The heart, convenient for the field management of ammeter.Concentrator carrier module after the power-up, automatically according to concentrator configuration electric energy meter relationship into
The networking in row meter reading path.Electric energy meter carrier module software support relay transmission function is needed during networking.In addition, due to setting
Set the copy controller with power line carrier module, electric energy meter or indoor display unit can be carried out power line carrier upgrading tune
Examination setting.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is a kind of structural block diagram of Split-type keyboard table carrier communication system provided in an embodiment of the present invention；
Fig. 2 is the structural block diagram of bottom plate carrier module provided in an embodiment of the present invention；
Fig. 3 is electric energy meter carrier module provided in an embodiment of the present invention and copy controller carrier module structural block diagram；
Fig. 4 is the primary AC power supply circuit of bottom plate carrier module provided in an embodiment of the present invention；
Fig. 5 is the spare dry cell power supply circuit of bottom plate carrier module provided in an embodiment of the present invention；
Fig. 6 is bottom plate carrier module anti-back flow circuit provided in an embodiment of the present invention；
Fig. 7 is bottom plate carrier module power control circuit provided in an embodiment of the present invention；
Fig. 8 is bottom plate carrier module power supply switch circuit provided in an embodiment of the present invention；
Fig. 9 is narrowband carrier circuit provided in an embodiment of the present invention；
Figure 10 is power line carrier signal transmitting line provided in an embodiment of the present invention；
Figure 11 is power line carrier signal coupling circuit provided in an embodiment of the present invention；
Figure 12 is power line carrier signal wave reception filtering circuit provided in an embodiment of the present invention；
Figure 13 is the demodulator circuit for carrier signal of power line that embodiment provided in an embodiment of the present invention provides；
Figure 14 is indicator light circuit provided in an embodiment of the present invention, debugging serial port circuit and burning program circuit；
Figure 15 is bottom plate carrier module light current power interface provided in an embodiment of the present invention；
Figure 16 is bottom plate carrier module light current communication interface of the present invention；
Figure 17 is bottom plate carrier module forceful electric power power interface of the present invention；
Figure 18 is electric energy meter carrier module forceful electric power power interface of the present invention；
Figure 19 is electric energy meter carrier module light current communication interface of the present invention.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, part relevant to related invention is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figure 1, the present invention takes following technical solution, I type concentrator, Changsha wasion are netted with 13 standard states
The copy controller of group's Split-type keyboard table and indoor display unit and Zhuhai Zhong Hui microelectronics limited liability company is to illustrate: overseas
Split-type keyboard table 270KHz carrier communication system, as shown in Figure 1, including state's net I type concentrator carrier module of 13 standards
(PLC-Router), electric energy meter carrier module (M-PLC), indoor display unit bottom plate carrier module (IHD-PLC) and copy controller
Carrier module (C-PLC), 13 standards state net I type concentrator, 13 standards state net I type concentrator GPRS module, split type key
Dish cart, indoor display unit, copy controller.Wherein, the PLC-Router is inserted into 13 standard concentrator carrier module positions, described
State's net I type concentrator GPRS modules of 13 standards be inserted into the right module positions of 13 standard concentrators, the described M-PLC insertion point
The back of PCB is used to insert the position of carrier module, the power supply of the IHD-PLC and indoor display unit in body formula keyboard table table
Part is fitted together on same pcb board, and with the upper layer pcb board of indoor display unit by the socket of a 10Pin,
The C-PLC and M-PLC hardware is almost the same, is copy controller carrier module/C-PLC when welding R10 and empty R7,
It is electric energy meter carrier module/M-PLC, C-PLC need to be inserted into copy controller for inserting carrier wave when welding R7 and empty R10
The position of module.Wherein, any one position, Split-type keyboard table are mounted on electric pole to the installation of 13 standard concentrators at the scene
On, indoor display unit is mounted on resident's family, and copy controller is then that engineering staff carries.PLC-Router,IHD-PLC,
Communication is using Direct Sequence Spread Spectrum (DSSS) technology and CSMA/CA collision detection and evacuation mechanism between M-PLC, C-PLC.One
A IHD-PLC can only be communicated with the M-PLC of same address, and vice versa；C-PLC zero-address is the carrier wave mould of transparent forwarding data
Block, therefore a C-PLC can match multiple IHD-PLC and M-PLC is communicated；One PLC-Router can be with multiple M-
Plc communication, and have ad hoc network function, this networking function needs M-PLC to have relay forwarding function.Since setting has power line
The copy controller of carrier module, electric energy meter or indoor display unit can be carried out power line carrier upgrading debugging setting.Copy control
Device uses transparent transmission DLT 645-2007/1997 message, and all power line updating protocols, debugging and configuration message format are equal
645 agreements need to be met.One copy controller can match multiple electric energy meters or indoor display unit.
Wherein, the IHD-PLC is as shown in Fig. 2, include the primary AC power supply circuit of IHD-PLC；IHD-PLC is spare
Dry cell power supply circuit；IHD-PLC anti-back flow circuit；IHD-PLC power control circuit；IHD-PLC power supply switch circuit；Narrowband
Carrier circuit, using the SWNP270F chip of Zhuhai Zhong Hui microelectronics limited liability company (hereinafter referred to as in Zhuhai intelligent)；Signal
Transmitting line；Signal coupling circuit；Wave reception filtering circuit；Signal demodulating circuit is using SWNO4361 chip intelligent in Zhuhai；Letter
Number anti-clutter circuit；Indicator light circuit；Debugging serial port circuit；Burning program circuit；IHD-PLC light current power interface；IHD-PLC
Light current communication interface；IHD-PLC forceful electric power power interface.The primary AC power supply circuit and spare dry cell power supply circuit point
It is not connected to power control circuit, power control circuit is connected to power supply switch circuit, and power supply switch circuit is connected to reverse-filling
Circuit, IHD-PLC forceful electric power power interface are connected to the primary ac power circuit；IHD-PLC signal demodulating circuit and IHD-
PLC signal coupling circuit is connected；IHD-PLC forceful electric power power interface is connected with IHD-PLC signal coupling circuit, for powering；
IHD-PLC signal demodulating circuit is connected with IHD-PLC signal coupling circuit；IHD-PLC narrowband carrier circuit is connect by IHD-PLC
Filter circuit is received to be connected with IHD-PLC signal demodulating circuit；IHD-PLC narrowband carrier circuit, which is connected, passes through IHD-PLC signal
Transmitting line is connected with IHD-PLC signal coupling circuit；IHD-PLC indicator light circuit, IHD-PLC debugging serial port circuit, IHD-
PLC program programming circuitry, IHD-PLC light current power interface are connected with IHD-PLC narrowband carrier circuit respectively.
M-PLC the and C-PLC hardware circuit is just the same, and only software has difference, as shown in figure 3, including that narrowband carries
Wave circuit, using SWNP270F chip intelligent in Zhuhai；Signal sending circuit；Signal coupling circuit；Wave reception filtering circuit；Signal
Demodulator circuit is using SWNO4361 chip intelligent in Zhuhai；Indicator light circuit；Debugging serial port circuit；Burning program circuit；M-PLC
Forceful electric power power interface；M-PLC light current communication interface；M-PLC forceful electric power power interface is connected with M-PLC signal coupling circuit, is used for
Power supply and signal transmission；M-PLC signal demodulating circuit is connected with M-PLC signal coupling circuit；M-PLC narrowband carrier circuit passes through
M-PLC wave reception filtering circuit is connected with M-PLC signal demodulating circuit；M-PLC narrowband carrier circuit, which is connected, passes through M-PLC signal
Transmitting line is connected with M-PLC signal coupling circuit；
M-PLC indicator light circuit, M-PLC debugging serial port circuit, M-PLC burning program circuit, M-PLC light current power interface
It is connected respectively with M-PLC narrowband carrier circuit.
As shown in figure 4, the primary ac power circuit of IHD-PLC, alternating current carries out normal by switching power circuit power supply
Work, Switching Power Supply IC are the TNY274 chip of PI (PowerIntegrations) company, and the switching frequency of the IC is
132KHZ, Switching Power Supply output+12V ± 0.7V are for IHD-PLC signal sending circuit, 400mA.12V passes through 7805 three-terminal voltage-stabilizings
Device (Imax=800mA) exports 5V for carrier chip.
As shown in figure 5, the spare dry cell power supply circuit of IHD-PLC；Using the dry cell series-fed of two section AAA 1.8V,
Battery capacity 1.2AH.It carries out boosting to+5V4=5.4V using the LM2623 boosting IC of National Semiconductor's design.
IHD-PLC can carry out power line carrier communication by the way of 3V dry cell power supply in the case where no alternating current, facilitate user
It pays the fees in the event of a loss of power.The dry cell is made of 2 section 1.8V, can standby 60 days or at least 288 not framing message (carrier waves
64 bytes) transmission.
As shown in fig. 6, IHD-PLC anti-back flow circuit；Due to using duplex feeding, the in order to prevent mutual shadow of voltage
It rings, two diodes of D5 and D16 has been used to ensure the one-way flow of 12V and 5V line current of primary ac power circuit output end
It is dynamic, and export VHH；Ensure the 5.4V line current of spare dry cell power supply circuit boosting output end with the diode of D15
One-way flow, and export 5V1；Ensure the one-way flow of DVCC line current with the diode of a D11, and exports 5V1.
As shown in fig. 7, IHD-PLC power control circuit；The 5V1 that AC or DC provides passes through a PMOS tube, utilizes
The on-off action of PMOS tube controls the PLC_POWER=5V power supply of light current interface.
As shown in figure 8, IHD-PLC power supply switch circuit；Due to there is two-way power supply power supply, in primary AC power supply circuit
There is a power supply switch circuit between spare dry cell power supply circuit.Pass through the XC61CN2502MR of TOREX (Te Ruishi) company
The 3V voltage that+12V power supply that voltage detecting IC provides exchange divides carries out voltage detecting, when there is 12V voltage,
MAIN_DROP exports 5V high level, and when no 12V, MAIN_DROP exports low level.As shown in figure 5, when MAIN_DROP is+5V
When high level, the EN foot of Q3 conducting, LM2623 is low level, and spare dry cell power supply circuit does not work, when MAIN_DROP is low
When level, Q3 is disconnected, and the EN foot of LM2623 is pulled upward to battery supply, spare dry cell power supply circuit work.Thus reach primary
The mutual switching of AC power supply circuit and spare dry cell power supply circuit.
As shown in figure 9, narrowband carrier circuit (IHD-PLC is consistent with M-PLC)；Using SWNP270F chip intelligent in Zhuhai,
This chip uses advanced Direct Sequence Spread Spectrum (DSSS) technology and CSMA/CA collision detection and evacuation mechanism, guarantees mostly main
The reliability of preemptive type communication.Single supply VDD=1.6~5.5 powers, and may be programmed flash memory 64KB, data flash memory 4KB,
The external crystal-controlled oscillation of SRAM=4KB, 20MHz provide clock frequency.It is C-PLC, as welding R7 when welding R10 and empty R7
And when emptying R10, it is M-PLC.
As shown in Figure 10, signal sending circuit (IHD-PLC is consistent with M-PLC)；Carrier signal SSCOUT is 5VTTL level
Signal, exported by 24 foot SSCAOUT of SWNP270F chip, by ROHM/ Romo Co., Ltd US6M2 metal-oxide-semiconductor by the letter
It number is converted into the square-wave signal of more high level, the series LC for then carrying out L8, C26 to square-wave signal filters, last outputting standard
Sine wave signal INOUT.
As shown in figure 11, signal coupling circuit (IHD-PLC is consistent with M-PLC), the peace designed by OKAYA (Gang Gu) company
Advise capacitor C19=0.15uF/310VAC；The magnetic core of BT1 signal coupling transformer uses Yue Feng electronic material limited liability company
The model A102 of production, size: 10*6*5 (i.e. 10 millimeters of outer diameter, 6 millimeters of aperture, 5 millimeters of thickness), coiling use diameter
The bilayer or three layer insulation wire of 0.3mm, two windings are respectively around 17 circles, then cover heat-shrink tube reinforcing, survey under the conditions of 270kHz/0.1V
Single winding inductance amount is obtained in 700uH~1600uH；The VP1 transient diode SMBJ22CA three parts of large triumphant electronics (SOCAY)
Composition.Wherein, C6 filters out exchange 50Hz signal, makes electric power line loop and communication unit security isolation using isolating transformer BT1,
And the function of high-pass filter is made of the secondary inductance L of capacitor C6 and isolating transformer, VP1 is eliminated from power line
Moment impact voltage protects late-class circuit.The INOUT signal that signal coupling output receives, and it is passed to wave reception filtering circuit.
As shown in figure 12, wave reception filtering circuit (IHD-PLC is consistent with M-PLC)；The INOUT exported from signal coupling circuit
Signal receives the spread spectrum communications signals on power line by bandpass filter and analog front circuit and carries out simulation solution
It adjusts, final output fsk signal to signal demodulating circuit.Its design object is the signal reception power improved in frequency band, and maximum
Inhibit to limit the noise jamming on power line, and keeps the insertion loss of passive filtering network minimum.
As shown in figure 13, signal demodulating circuit (IHD-PLC is consistent with M-PLC)；Carrier signal FSK is first by SWNO4361
16 feet of chip input, and are mixed with the 185kHz signal of 1 foot input, a difference frequency (270kHz-185kHz is obtained after mixing
=85kHz) and one and frequency (270kHz+185kHz=455kHz), due to being the aliasing of two frequencies, so waveform at this time
Compare in a jumble, exported by the 3rd foot, after the filtering of LT455BW ceramic filter, waveform only retains and frequency 455kHz, by the 5th foot
Input, restores data blank after limited range enlargement, frequency discrimination, audio amplification, waveform at this time due to the signal containing 455kHz,
So it is relatively more mixed and disorderly, it is exported by the 9th foot, after amplifying clipping using active power filtering, filters out 455kHz signal, it is young only to retain data
Shape is exported by 11 feet, is inputted after capacitive coupling, then by 12 feet, after noise elimination indicates, exports SSCIN signal by 13 feet
To 29 feet of carrier chip, recovered digital signal, completes demodulating process at this time.One complete narrowband carrier signal hair
It send, couple, filtering, demodulating, receive process are completed.
As shown in figure 14, indicator light circuit, debugging serial port circuit and burning program circuit (IHD-PLC is consistent with M-PLC)；
The red light of indicator light circuit is HL3, and anode connects 5V power supply, and cathode connects the 11st foot LED_TXD of SWNP270F chip, blinking red lamp
When indicate carrier wave have data transmission；Green light is HL4, and anode connects 5V power supply, and cathode meets the 13rd foot LED_ of SWNP270F chip
RXD indicates that carrier wave receives data when green light flashes.Debug serial ports using the 1 × 3 of 2.54mm single through-hole as connector,
Transmitting-receiving pin is connected to the 20th foot and the 21st foot of SWNP270F chip.Burning program interface 4 pins in total, with
The single through-hole in the 1 × 5 of 2.54mm is as connector, and anti-plug, specially removes the 4th foot in order to prevent, wherein the 1st foot indicates VDD
=5V power supply；2nd foot indicates reset signal pin RESET；3rd foot indicates signal ground GND；4th foot is hanging；5th foot indicates number
According to signal pins TOOL0.
As shown in figure 15, IHD-PLC light current power interface；Light current power interface is the row of the 2.54mm spacing of a 2PIN
Jack, direct bonding wire connect battery spring seat, and the 1st foot is positive, and crus secunda is negative.
As shown in figure 16, IHD-PLC light current communication interface；Light current communication interface using the 2 × 5 of 2.54mm double sockets as
Connector matches with the contact pin of top plate.Wherein, the 1st foot is dry cell power supply voltage VBAT, and sense is output；2nd
Foot is hanging；3rd, 4 feet are the power supply 5V1 to power to top plate, provide after being boosted by dry cell or 7805 provide, sense is
Output；5th foot is that top plate gives IHD-PLC transmission signal PLC_POWER, controls the 5V power supply of IHD-PLC, sense is defeated
Enter；The transmission foot TXD_TOP of 6th foot communication serial port between top plate and IHD-PLC, sense are input；7th foot is electricity
Pressure detection signal MAIN_DROP, sense are output；The reception foot of 8th foot communication serial port between top plate and IHD-PLC
RXD_TOP, sense are output；9th foot is that communicatedly VSS, the 10th foot are hanging.
As shown in figure 17, IHD-PLC forceful electric power power interface；Forceful electric power interface using the pad of 2 3*5mm as connector, with
Standard electric alternating current 220V power supply base matches welding, and two pads are started to exchange fire line L and zero curve N respectively.As connecing for signal coupling
Enter end.
As shown in figure 18, M-PLC forceful electric power power interface；Using the 2 × 4 of 2.54mm double sockets as connector, with state's net
The forceful electric power socket of standard single-phase carrier ammeter in 2009 matches.Wherein, the 1st, 2 feet are fire-wire interfaces L, the 3rd, 4,5,6 feet it is outstanding
It is empty；7th, 8 feet are zero line interface N.The incoming end that firewire and zero curve are coupled as signal.
As shown in figure 19, M-PLC light current communication interface；Light current communication interface is using the 2 × 6 of 2.54mm double sockets as company
Fitting matches with the light current socket of state net standard single-phase carrier ammeter in 2009.Wherein, the 1st, 2 feet are the electricity that ammeter provides
Source VCC=12V；3rd, 4 feet are communicatedly VSS=GND；5th foot serial ports sends foot TXD, and sense is output；6th foot is
The power vd D=5V that ammeter provides；7th foot MAC Address is arranged enabled foot SET, and when low level, carrier module MAC can be arranged
Address；8th foot is that serial ports receives foot RXD, and sense is input；9th foot is resetting pin RST, and sense is input；10th
Foot is hanging；11st foot is event detection pin EVENOUT, and sense is output, when event occurs, exports high level,
Request inquiry anomalous event；Inquiry finishes output low level；12nd foot is hanging.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is not limited to technical solution made of the specific combination of above-mentioned technical characteristic it should be appreciated that invention scope involved in the application,
It should also cover in the case where not departing from the inventive concept simultaneously, carry out any group by above-mentioned technical characteristic or its equivalent feature
The other technical solutions closed and formed.Such as features described above and the technical characteristic with similar functions disclosed herein carry out
The technical solution replaced mutually and formed.
Claims (9)
1. a kind of Split-type keyboard table carrier communication system, which is characterized in that if including concentrator, several Split-type keyboard tables,
Indoor display unit is done, the indoor display unit is identical with the Split-type keyboard table quantity；
The concentrator further comprises concentrator carrier module and communication module, and the indoor display unit further comprises bottom
Plate carrier module, the Split-type keyboard table further comprise electric energy meter carrier module, and the concentrator carrier module passes through electricity
The line of force is connected with the electric energy meter carrier module, and the electric energy meter carrier module is connected by power line with bottom plate carrier module；
The communication module is used for electric energy meter data transmission to administrative center；
The bottom plate carrier module includes primary AC power supply circuit, spare dry cell power supply circuit, anti-back flow circuit, power supply
Control circuit, power supply switch circuit, IHD-PLC narrowband carrier circuit, IHD-PLC signal sending circuit, the coupling of IHD-PLC signal
Circuit, IHD-PLC wave reception filtering circuit, IHD-PLC signal demodulating circuit, IHD-PLC signal anti-clutter circuit, IHD-PLC refer to
Indication lamp circuit, IHD-PLC debugging serial port circuit, IHD-PLC burning program circuit, IHD-PLC light current power interface, IHD-PLC
Forceful electric power power interface；
The primary AC power supply circuit and spare dry cell power supply circuit are respectively connected to power control circuit, power supply control
For circuit connection to power supply switch circuit, power supply switch circuit is connected to anti-back flow circuit, and IHD-PLC forceful electric power power interface is connected to
The primary AC power supply circuit；IHD-PLC signal demodulating circuit is connected with IHD-PLC signal coupling circuit；
IHD-PLC forceful electric power power interface is connected with IHD-PLC signal coupling circuit, for powering and signal transmission；IHD-PLC letter
Number demodulator circuit is connected with IHD-PLC signal coupling circuit；IHD-PLC narrowband carrier circuit is accepted filter electricity by IHD-PLC
Road is connected with IHD-PLC signal demodulating circuit；IHD-PLC narrowband carrier circuit by IHD-PLC signal sending circuit with
IHD-PLC signal coupling circuit is connected；
IHD-PLC indicator light circuit, IHD-PLC debugging serial port circuit, IHD-PLC burning program circuit, IHD-PLC light current power supply
Interface is connected with IHD-PLC narrowband carrier circuit respectively.
2. Split-type keyboard table carrier communication system according to claim 1, which is characterized in that the electric energy meter carrier wave mould
The back that block is inserted into PCB in the Split-type keyboard table table is used to insert the position of carrier module, the bottom plate carrier module with
The power unit of indoor display unit passes through one on same pcb board, and with the upper layer pcb board of the indoor display unit
The socket of 10Pin fits together.
3. Split-type keyboard table carrier communication system according to claim 1, which is characterized in that the concentrator is mounted on
Any position, on utility poles, the indoor display unit is mounted on resident's family for the Split-type keyboard table installation.
4. any Split-type keyboard table carrier communication system according to claim 1~3, which is characterized in that further include copying
Device is controlled, the copy controller further comprises copy controller carrier module, and the copy controller carrier module passes through power line and electric energy meter
Carrier module is connected with bottom plate carrier module.
5. Split-type keyboard table carrier communication system according to claim 1, which is characterized in that
Alternating current is worked normally by switching power circuit power supply, and the switching power circuit is TNY274 chip, described
Switching power circuit output+12V ± 0.7V voltage is supplied for IHD-PLC signal sending circuit by exporting 5V after three terminal regulator
IHD-PLC narrowband carrier circuit；
The dry cell power supply circuit, using the dry cell series-fed of two section AAA 1.8V, battery capacity 1.2AH passes through
LM2623 boosting IC carries out boosting to 5.4V；
The anti-back flow circuit uses two two poles D5 and D16 for preventing+12V voltage and the mutual influence of+5V voltage
Pipe ensures the one-way flow of the 12V and 5V line current of the primary AC power supply circuit output end, and exports VHH；It uses
D15 diode ensures the one-way flow of the 5.4V line current of spare dry electric 20 pond power supply circuit boosting output end, and exports
5V1；Ensure the one-way flow of DVCC line current using a D11 diode, and exports 5V1；
The power control circuit is constituted using PMOS tube, and 5V1 passes through the PMOS tube, utilizes the on-off action of the PMOS tube
The power supply of the light current power interface is controlled；
The power supply switch circuit, for being cut to the primary AC power supply circuit and spare dry cell power supply circuit
It changes；Voltage inspection is carried out by the 3V voltage that+12V power supply that XC61CN2502MR voltage detecting IC provides exchange divides
It surveys, when there is 12V voltage, MAIN_DROP exports 5V high level, and when no 12V, MAIN_DROP exports low level, works as MAIN_
When DROP is+5V high level, the EN foot of Q3 conducting, LM2623 is low level, and spare dry cell power supply circuit does not work, when
When MAIN_DROP is low level, Q3 is disconnected, and the EN foot of LM2623 is pulled upward to battery supply, spare dry cell power supply circuit work；
Thus reach the mutual switching of the primary AC power supply circuit and spare dry cell power supply circuit；
The IHD-PLC narrowband carrier circuit includes SWNP270F chip；
The IHD-PLC signal sending circuit；Carrier signal SSCOUT is the signal of 5VTTL level, by SWNP270F chip
24 foot SSCAOUT output, the metal-oxide-semiconductor by the US6M2 of ROHM/ Romo Co., Ltd believe the square wave that the signal is converted into more high level
Number, the series LC for then carrying out L8, C26 to square-wave signal filters, the sine wave signal INOUT of last outputting standard；
The IHD-PLC signal coupling circuit, including safety capacitor C19, capacitance 0.15uF/310VAC；The coupling of BT1 signal becomes
The magnetic core of depressor uses the model A102 of Yue Feng electronic material limited liability company production, size: 10 millimeters of outer diameter, aperture 6
Millimeter, 5 millimeters of thickness, coiling uses the bilayer or three layer insulation wire of diameter 0.3mm, and two windings are respectively around 17 circles, then cover pyrocondensation
Pipe is reinforced, and is measured under the conditions of 270kHz/0.1V individually around sensibility reciprocal in 700uH~1600uH；Two pole of VP1 transient state of large triumphant electronics
Pipe SMBJ22CA three parts composition, wherein C6 filter out exchange 50Hz signal, using isolating transformer BT1 make electric power line loop and
Communication unit security isolation, and it is made of the secondary inductance L of capacitor C6 and isolating transformer the function of high-pass filter,
VP1 eliminates the moment impact voltage from power line, protects late-class circuit；The INOUT signal that signal coupling output receives, and
It is passed to wave reception filtering circuit；The IHD-PLC wave reception filtering circuit receives the INOUT signal exported from signal coupling circuit,
The spread spectrum communications signals on power line are received by bandpass filter and analog front circuit and carry out analog demodulator, finally
Fsk signal is exported to signal demodulating circuit；
The carrier signal FSK of the IHD-PLC signal demodulating circuit is inputted by 16 feet of SWNO4361 chip first, defeated with 1 foot
The 185kHz signal entered is mixed, and a difference frequency 85kHz and one and frequency 455kHz is obtained after mixing, due to being two frequencies
Aliasing exported by the 3rd foot so waveform comparison at this time is mixed and disorderly, after the filtering of LT455BW ceramic filter, waveform is only
Retain and restores data blank after limited range enlargement, frequency discrimination, audio amplification by the input of the 5th foot with frequency 455kHz, it is defeated by the 9th foot
Out, after amplifying clipping using active power filtering, 455kHz signal is filtered out, only retains data blank, is exported by 11 feet, by capacitor
After coupling, then by the input of 12 feet, after noise elimination indicates, by 29 feet of 13 feet output SSCIN signal to carrier chip, at this time
Recovered digital signal completes demodulating process；
The red light of IHD-PLC indicator light circuit is HL3, and anode connects 5V power supply, and cathode meets the 11st foot LED_ of SWNP270F chip
TXD indicates that carrier wave has data transmission when blinking red lamp；Green light is HL4, and anode connects 5V power supply, and cathode connects SWNP270F chip
13rd foot LED_RXD indicates that carrier wave receives data when green light flashes；Debug serial ports using the 1 × 3 of 2.54mm single through-hole as
Connector, transmitting-receiving pin are connected to the 20th foot and the 21st foot of SWNP270F chip；Burning program interface is managed for 4 in total
10 feet, using the 1 × 5 of 2.54mm single through-hole as connector, anti-plug, specially removes the 4th foot in order to prevent, wherein the 1st foot
Indicate VDD=5V power supply；2nd foot indicates reset signal pin RESET；3rd foot indicates signal ground GND；4th foot is hanging；5th foot
Indicate data signal pin TOOL0；
The IHD-PLC light current power interface is the socket hole of the 2.54mm spacing of a 2PIN, and direct bonding wire connects battery spring
Seat, the 1st foot are positive, and crus secunda is negative；
Contact pin phase of the IHD-PLC light current communication interface using the 2 × 5 of 2.54mm double sockets as connector, with top plate
Matching；Wherein, the 1st foot is dry cell power supply voltage VBAT, and sense is output；2nd foot is hanging；3rd, 4 feet are to upper layer
The power supply 5V1 of plate power supply, provides after being boosted by dry cell or 7805 provide, and sense is output；5th foot is given for top plate
IHD-PLC sends signal PLC_POWER, controls the 5V power supply of IHD-PLC, and sense is input；6th foot be top plate and
The transmission foot TXD_TOP of communication serial port between IHD-PLC, sense are input；7th foot is voltage detection signal MAIN_
DROP, sense are output；The reception foot RXD_TOP of 8th foot communication serial port between top plate and IHD-PLC, signal side
To for output；9th foot is that communicatedly VSS, the 10th foot are hanging；
IHD-PLC forceful electric power power interface is using the pad of 2 3*5mm as connector, with standard electric alternating current 220V power supply base phase
Matching welding, two pads are started to exchange fire the incoming end that line L and zero curve N are coupled as signal respectively.
6. Split-type keyboard table carrier communication system according to claim 4, which is characterized in that the electric energy meter carrier wave mould
Block includes M-PLC narrowband carrier circuit；M-PLC signal sending circuit；M-PLC signal coupling circuit, M-PLC accept filter electricity
Road, M-PLC signal demodulating circuit, M-PLC indicator light circuit, M-PLC debugging serial port circuit, M-PLC burning program circuit, M-
PLC forceful electric power power interface, M-PLC light current communication interface；The copy controller carrier module and the electric energy meter carrier module circuit
It is identical；
M-PLC forceful electric power power interface is connected with M-PLC signal coupling circuit, for powering and signal transmission；The demodulation of M-PLC signal
Circuit is connected with M-PLC signal coupling circuit；M-PLC narrowband carrier circuit passes through M-PLC wave reception filtering circuit and M-PLC signal
Demodulator circuit is connected；M-PLC narrowband carrier circuit is connected by M-PLC signal sending circuit with M-PLC signal coupling circuit；
M-PLC indicator light circuit, M-PLC debugging serial port circuit, M-PLC burning program circuit, M-PLC light current power interface difference
It is connected with M-PLC narrowband carrier circuit.
7. Split-type keyboard table carrier communication system according to claim 6, which is characterized in that
The M-PLC narrowband carrier circuit includes SWNP270F chip；
The M-PLC signal sending circuit；Carrier signal SSCOUT is the signal of 5VTTL level, by the 24 of SWNP270F chip
Foot SSCAOUT output, the metal-oxide-semiconductor by the US6M2 of ROHM/ Romo Co., Ltd believe the square wave that the signal is converted into more high level
Number, the series LC for then carrying out L8, C26 to square-wave signal filters, the sine wave signal INOUT of last outputting standard；
The M-PLC signal coupling circuit, including safety capacitor C19, capacitance 0.15uF/310VAC；BT1 signal couples transformation
The magnetic core of device uses the model A102 of Yue Feng electronic material limited liability company production, size: 10 millimeters of outer diameter, 6 milli of aperture
Rice, 5 millimeters of thickness, coiling uses the bilayer or three layer insulation wire of diameter 0.3mm, and two windings are respectively around 17 circles, then cover heat-shrink tube
It reinforces, single winding inductance amount is measured under the conditions of 270kHz/0.1V in 700uH~1600uH；The VP1 transient state two of large triumphant electronics
Pole pipe SMBJ22CA three parts composition, wherein C6 filters out exchange 50Hz signal, makes electric power line loop using isolating transformer BT1
With communication unit security isolation, and it is made of the secondary inductance L of capacitor C6 and isolating transformer the function of high-pass filter,
VP1 eliminates the moment impact voltage from power line, protects late-class circuit；The INOUT signal that signal coupling output receives, and
It is passed to wave reception filtering circuit；
The IHD-PLC wave reception filtering circuit receives INOUT signal export from signal coupling circuit, by bandpass filter with
Analog front circuit receives the spread spectrum communications signals on power line and carries out analog demodulator, final output fsk signal to letter
Number demodulator circuit；
The carrier signal FSK of the M-PLC signal demodulating circuit is inputted by 16 feet of SWNO4361 chip first, is inputted with 1 foot
185kHz signal be mixed, a difference frequency 85kHz and one and frequency 455kHz are obtained after mixing, due to being two frequencies
Aliasing is exported so waveform comparison at this time is mixed and disorderly by the 3rd foot, and after the filtering of LT455BW ceramic filter, waveform is only protected
It stays and restores data blank after limited range enlargement, frequency discrimination, audio amplification by the input of the 5th foot with frequency 455kHz, it is defeated by the 9th foot
Out, after amplifying clipping using active power filtering, 455kHz signal is filtered out, only retains data blank, is exported by 11 feet, by capacitor
After coupling, then by the input of 12 feet, after noise elimination indicates, by 29 feet of 13 feet output SSCIN signal to carrier chip, at this time
Recovered digital signal completes demodulating process；
The red light of M-PLC indicator light circuit is HL3, and anode connects 5V power supply, and cathode meets the 11st foot LED_ of SWNP270F chip
TXD indicates that carrier wave has data transmission when blinking red lamp；Green light is HL4, and anode connects 5V power supply, and cathode connects SWNP270F chip
13rd foot LED_RXD indicates that carrier wave receives data when green light flashes；Debug serial ports using the 1 × 3 of 2.54mm single through-hole as
Connector, transmitting-receiving pin are connected to the 20th foot and the 21st foot of SWNP270F chip；Burning program interface is managed for 4 in total
Foot, using the 1 × 5 of 2.54mm single through-hole as connector, anti-plug, specially removes the 4th foot in order to prevent, wherein the 1st foot table
Show VDD=5V power supply；2nd foot indicates reset signal pin RESET；3rd foot indicates signal ground GND；4th foot is hanging；5th foot table
Show data signal pin TOOL0；
M-PLC forceful electric power power interface is using the 2 × 4 of 2.54mm double sockets as connector, with state's net single-phase load of standard in 2009
The forceful electric power socket of wave ammeter matches；Wherein, the 1st, 2 feet are fire-wire interfaces L, the 3rd, 4,5,6 feet it is hanging；7th, 8 feet are zero curve
Interface N；The incoming end that firewire and zero curve are coupled as signal；
M-PLC light current communication interface is using the 2 × 6 of 2.54mm double sockets as connector, with state's net single-phase load of standard in 2009
The light current socket of wave ammeter matches；Wherein, the 1st, 2 feet are the power supply VCC=12V that ammeter provides；3rd, 4 feet are communicatedly
VSS=GND；5th foot serial ports sends foot TXD, and sense is output；6th foot is the power vd D=5V that ammeter provides；7th foot
MAC Address is arranged enabled foot SET, and when low level, carrier module MAC Address can be arranged；8th foot is that serial ports receives foot RXD, letter
Number direction is input；9th foot is resetting pin RST, and sense is input；10th foot is hanging；11st foot is event detection pin
EVENOUT, sense is output, when event occurs, exports high level, request inquiry anomalous event；Inquiry finishes defeated
Low level out；12nd foot is hanging.
8. Split-type keyboard table carrier communication system according to claim 7, which is characterized in that as welding R10 by R7
It is copy controller carrier module/C-PLC when emptying, is electric energy meter carrier module/M-PLC when welding R7 and empty R10.
9. any Split-type keyboard table carrier communication system according to claim 1~3, which is characterized in that the communication
Module is GPRS module, 3G communication module or 4G communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510767963.9A CN105490706B (en) | 2015-11-11 | 2015-11-11 | A kind of Split-type keyboard table carrier communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510767963.9A CN105490706B (en) | 2015-11-11 | 2015-11-11 | A kind of Split-type keyboard table carrier communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105490706A CN105490706A (en) | 2016-04-13 |
| CN105490706B true CN105490706B (en) | 2019-05-07 |
Family
ID=55677472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510767963.9A Active CN105490706B (en) | 2015-11-11 | 2015-11-11 | A kind of Split-type keyboard table carrier communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105490706B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110570638A (en) * | 2018-07-23 | 2019-12-13 | 安徽博辰电力科技有限公司 | method for solving mobile signal coverage blind area based on power line high-speed carrier communication technology |
| CN112198351B (en) * | 2020-07-24 | 2022-08-26 | 国网山东省电力公司营销服务中心(计量中心) | Measurement core and module intelligence batch meter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201623706U (en) * | 2010-02-08 | 2010-11-03 | 长沙威胜信息技术有限公司 | Low-voltage power line carrier communication module |
| CN202172403U (en) * | 2011-09-08 | 2012-03-21 | 长沙威胜信息技术有限公司 | Low voltage power line carrier communication module |
| CN202486853U (en) * | 2012-04-09 | 2012-10-10 | 威胜集团有限公司 | Split keyboard prepayment watt-hour meter |
| CN103366544A (en) * | 2013-07-22 | 2013-10-23 | 国家电网公司 | Routing simulation system based on electric power line |
| CN104022901A (en) * | 2014-06-03 | 2014-09-03 | 青岛东软载波科技股份有限公司 | Method of configuring and managing ONU (Optical Network Unit) module of state grid concentrator by utilizing PLC (Programmable Logic Controller) |
| CN205356335U (en) * | 2015-11-11 | 2016-06-29 | 珠海中慧微电子股份有限公司 | Split type keyboard table carrier communication system |
-
2015
- 2015-11-11 CN CN201510767963.9A patent/CN105490706B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201623706U (en) * | 2010-02-08 | 2010-11-03 | 长沙威胜信息技术有限公司 | Low-voltage power line carrier communication module |
| CN202172403U (en) * | 2011-09-08 | 2012-03-21 | 长沙威胜信息技术有限公司 | Low voltage power line carrier communication module |
| CN202486853U (en) * | 2012-04-09 | 2012-10-10 | 威胜集团有限公司 | Split keyboard prepayment watt-hour meter |
| CN103366544A (en) * | 2013-07-22 | 2013-10-23 | 国家电网公司 | Routing simulation system based on electric power line |
| CN104022901A (en) * | 2014-06-03 | 2014-09-03 | 青岛东软载波科技股份有限公司 | Method of configuring and managing ONU (Optical Network Unit) module of state grid concentrator by utilizing PLC (Programmable Logic Controller) |
| CN205356335U (en) * | 2015-11-11 | 2016-06-29 | 珠海中慧微电子股份有限公司 | Split type keyboard table carrier communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105490706A (en) | 2016-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203225420U (en) | Intelligent outlet based on power line carrier | |
| CN204614731U (en) | A kind of three-phase intelligent Miniature magnetic keeps circuit breaker | |
| CN205356335U (en) | Split type keyboard table carrier communication system | |
| CN105490706B (en) | A kind of Split-type keyboard table carrier communication system | |
| CN104241988A (en) | Power line | |
| CN203352211U (en) | Alternating current charging post and a control system thereof | |
| CN103018551A (en) | Single-phase intelligent electric energy meter with ZigBee communication module | |
| CN204597127U (en) | Close-coupled socket | |
| CN202033894U (en) | Carrier meter reader with multiple RS485 ports | |
| CN204885859U (en) | Domestic intelligent electric block terminal | |
| CN108665694A (en) | A method of electric power terminal device is monitored based on intelligent perception technology | |
| CN209297432U (en) | One kind leasing formula solar charging electric equipment payment system | |
| CN208189020U (en) | A kind of intelligent electric energy meter supplements repeating installation with money | |
| CN204156248U (en) | Power line | |
| CN205920596U (en) | Use electric information collection concentrator based on DLMSCOSEM | |
| CN207020227U (en) | A kind of intelligent integrated formula ammeter | |
| CN209488581U (en) | A kind of data communication module | |
| CN201673543U (en) | Intelligent access control system based on wireless network technology | |
| CN205862557U (en) | A kind of electric energy meter centralized automatic meter-reading device | |
| CN209373029U (en) | A kind of Novel wire cable fault location unit | |
| CN204256842U (en) | A kind of multi-user's electric charge payment device | |
| CN201667094U (en) | CPU card management circuit used for prepayment electric energy meter | |
| CN205720377U (en) | Bus power supply type multifunctional electric meter | |
| CN206725621U (en) | A kind of electric energy long-distance monitorng device based on Internet of Things | |
| CN205861738U (en) | Kenya's single-phase STS split electric energy meter open air table body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 519085 No. 19, Innovation Coastal Science and Technology Sixth Road, Zhuhai National High-tech Zone, Guangdong Province Applicant after: Zhuhai Zhonghui Microelectronics Co.,Ltd. Address before: 519085 No. 19, Innovation Coastal Science and Technology Sixth Road, Zhuhai National High-tech Zone, Guangdong Province Applicant before: ZHUHAI ZHONGHUI MICROELECTRONICS CO., LTD. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |