CN208189020U - A kind of intelligent electric energy meter supplements repeating installation with money - Google Patents
A kind of intelligent electric energy meter supplements repeating installation with money Download PDFInfo
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- CN208189020U CN208189020U CN201820732244.2U CN201820732244U CN208189020U CN 208189020 U CN208189020 U CN 208189020U CN 201820732244 U CN201820732244 U CN 201820732244U CN 208189020 U CN208189020 U CN 208189020U
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Abstract
The utility model discloses a kind of intelligent electric energy meters to supplement repeating installation with money, and the bluetooth including being arranged in electricity box shell turns RS485 communication module and several intelligent electric energy meters；Each A terminal of each intelligent electric energy meter with the first conducting wire and connects, and each B terminal is with the second conducting wire and connects, and the first conducting wire and the second conducting wire composition RS485 bus turn RS485 communication module with bluetooth and be electrically connected；Bluetooth turn RS485 communication module to authentication instruction or operational order be decrypted and validity check after be converted to operation signal, intelligent electric energy meter, which is sent to, by RS485 bus executes corresponding operation processing, intelligent electric energy feedback operation consequential signal and by RS485 bus be sent to bluetooth turn RS485 communication module carry out encryption and format convert, bluetooth turn RS485 communication module by bluetooth transmission operating result data to mobile terminal.Turn the success rate that RS485 communication module substantially increases power consumer operation by bluetooth.
Description
Technical field
The utility model relates to ammeter technical field, in particular to a kind of intelligent electric energy meter supplements repeating installation with money.
Background technique
Intelligent electric energy meter be with the beginning of the eighties, singlechip technology maturation and grow up.At present national grid and
For the tradition machinery electric energy meter that local power network uses replaced intelligent electric energy meter, tracing it to its cause is the need of enterprise information management
It wants.A necessary condition of the smart grid when measuring type selecting is telecommunication to be had and local control function.Telecommunication
Mode is at present based on narrow-band power line carrier, broadband power line carrier or wireless telecommunications (470MHz).
But smart grid working environment is bad at present, because loading excessive, interference source not on power line when power line communication
The factors such as detailed are brought to power line communication time performance to be seriously affected.If 470Mhz wireless telecommunications are because of on-air radio electrical interference, floor
It blocks or weather influences, cause Realtime Capability of Communication not high, to keep power consumer failure rate of supplementing with money or send a telegram in reply excessively high.Intelligent electric energy
Table Communications failure rate during remote recharge or telegram in reply is too high, is not able to satisfy power consumer completely and fills demand i.e., leads
It causes power customer service to complain excessively frequent, the workload of overload is brought to O&M department of power supply company.
Thus the prior art could be improved and improve.
Utility model content
Place in view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of intelligent electric energy meters to supplement with money
Repeating installation, to solve the problems, such as that existing intelligent electric energy meter remote recharge or telegram in reply failure rate are excessively high.
In order to achieve the above object, the utility model takes following technical scheme:
A kind of intelligent electric energy meter supplements repeating installation with money, with mobile terminal bluetooth connection comprising: it is arranged in electricity box shell
Bluetooth turn RS485 communication module and several intelligent electric energy meters；
For carrying out each A terminal of RS485 communication with the first conducting wire and connecing on each intelligent electric energy meter, each B terminal is with second
Conducting wire simultaneously connects, and the first conducting wire and the second conducting wire composition RS485 bus turn RS485 communication module with bluetooth and be electrically connected；
The bluetooth turns the authentication instruction that RS485 communication module exports mobile terminal or operational order is decrypted
And validity check, format is converted to corresponding authentication signal or operation signal after verifying effectively, is sent to intelligence by RS485 bus
It can electric energy meter；After intelligent electric energy meter executes corresponding authentication processing or operation processing according to authentication signal or operation signal, feedback
Authentication result signal or operating result signal are simultaneously sent to bluetooth by RS485 bus and turn RS485 communication module；Bluetooth turns
RS485 communication module carries out encryption to authentication result signal or operating result signal and format is converted, and is sent and is authenticated by bluetooth
Result data or operating result data are to mobile terminal.
The intelligent electric energy meter is supplemented with money in repeating installation, and it includes a shell, shell that the bluetooth, which turns RS485 communication module,
On be provided with the A contact at the end A for accessing RS485 bus and the B contact at the end B for accessing RS485 bus；The shell
One circuit board of interior setting, be provided on the circuit board bluetooth communication governor circuit, RS485 communicating circuit, encryption and decryption circuit and
Electric power management circuit；
The bluetooth communication governor circuit exports after carrying out coupling filtering to received authentication instruction or operational order
It is decrypted to encryption and decryption circuit, exports corresponding 485 transmitting signal after carrying out validity check to the data-signal after decryption；
RS485 communicating circuit generates corresponding authentication signal or operation signal according to 485 transmitting signals and is transmitted to RS485
Bus, authentication result signal or operating result signal also according to RS485 bus transfer generate corresponding 485 reception signal and pass
Transport to bluetooth communication governor circuit；
485 reception signals are transmitted to encryption and decryption circuit and encrypted by bluetooth communication governor circuit, and encrypted data is believed
It number is converted to authentication result data or operating result data, bluetooth is sent to mobile terminal；
Electric power management circuit powers to bluetooth communication governor circuit, RS485 communicating circuit and encryption and decryption circuit.
The intelligent electric energy meter is supplemented with money in repeating installation, the bluetooth communication governor circuit include main control chip, antenna,
Interface, the first crystal oscillator, the second crystal oscillator, the first inductance, the second inductance, third inductance, the 4th inductance, the 5th inductance, first resistor,
First capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor, the 7th capacitor and the 8th capacitor；
DIO_0 foot, DIO_1 foot, the DIO_5 foot of the main control chip are all connected with RS485 communicating circuit, main control chip
DIO_2 foot, DIO_3 foot, DIO_4 foot, DIO_6 foot are all connected with encryption and decryption circuit；The JTAG_TMSC foot connecting interface of main control chip
The 1st foot, the 2nd foot of the JTAG_TCKC foot connecting interface of main control chip, interface the 3rd foot ground connection, interface the 4th foot connection
First power end；The RESET_N foot of main control chip connects the first power end by first resistor, also by first capacitor ground connection；
The VDDS2 foot of main control chip connects the first power end；The VDDR foot of the VDDR_RF foot connection main control chip of main control chip, second
Power end, one end of the 5th inductance and the 8th capacitor one end；The DCDC_SW of the other end connection main control chip of 5th inductance
Foot, the other end ground connection of the 8th capacitor；The RX_TX foot of main control chip connects one end of the first inductance, is also connect by the second capacitor
Ground；The RF_N foot of main control chip connects the other end, one end of the second inductance and one end of third capacitor of the first inductance；Master control core
The RF_P foot of piece connects the other end of the second inductance and one end of third inductance, also passes through the 5th capacity earth；Third capacitor
The other end connects the other end of third inductance and one end of the 4th inductance, the other end connection antenna of the 4th inductance, also by the
Four capacity earths；The X32K_Q1 foot of main control chip connects the 2nd foot of the first crystal oscillator, also passes through the 7th capacity earth；Main control chip
X32K_Q2 foot connect the first crystal oscillator the 1st foot, also pass through the 6th capacity earth；The X24M_N foot connection second of main control chip
1st foot of crystal oscillator, the X24M_P foot of main control chip connect the 3rd foot of the second crystal oscillator, and the 2nd foot of the second crystal oscillator connects the second crystal oscillator
The 4th foot and ground.
The intelligent electric energy meter is supplemented with money in repeating installation, and the RS485 communicating circuit includes RS485 communication chip,
One optocoupler, the second optocoupler, third optocoupler, inhibit diode, the first thermistor, second resistance, 3rd resistor, the 4th resistance,
5th resistance, the 6th resistance, the 7th resistance, the 8th resistance and the 9th resistance；
One end of A foot connection second resistance, the end A of RS485 bus and the inhibition diode of the RS485 communication chip
The other end of one end of TVS, second resistance connects third power end；The B foot connection of RS485 communication chip inhibits the another of diode
One end and one end of the first thermistor also pass through 3rd resistor ground connection；The other end of first thermistor connects RS485 bus
The end B, the VCC foot of RS485 communication chip connects third power end；The D foot of RS485 communication chip connects the transmitting of the first optocoupler
Pole also passes through the 8th resistance with connecting bus；The foot connection RS485 communication chip of RS485 communication chip U2Foot and third
The emitter of optocoupler also passes through the 6th resistance with connecting bus；The R foot of RS485 communication chip passes through the 4th resistance connection second
The cathode of optocoupler, the anode of the first optocoupler and the anode of third optocoupler are all connected with the 4th power end, and the cathode of the first optocoupler passes through
The DIO_0 foot of 7th resistance connection main control chip；The DIO_1 foot of the collector connection main control chip of second optocoupler, also by the
Nine resistance connect the 4th power end；The cathode of third optocoupler connects the DIO_5 foot of main control chip, the first optocoupler by the 5th resistance
Collector, the collector of third optocoupler and the anode of the second optocoupler be all connected with third power end.
The intelligent electric energy meter is supplemented with money in repeating installation, the encryption and decryption circuit include ESAM encryption chip, triode,
9th capacitor, the tenth resistance, eleventh resistor and twelfth resistor；
The GND foot of the ESAM encryption chip connects one end and ground of the 9th capacitor, the I/O foot connection of ESAM encryption chip
The DIO_6 foot of main control chip also passes through twelfth resistor the 5th power end of connection；The CLK foot of ESAM encryption chip connects master control
The DIO_4 foot of chip；The DIO_3 foot of the RST foot connection main control chip of ESAM encryption chip also by eleventh resistor connects the
Five power ends；The VCC foot of ESAM encryption chip connects the 5th power end, the other end of the 9th capacitor and the collector of triode；
The base stage of triode connects the DIO_2 foot of main control chip by the tenth resistance, and the emitter of triode connects the 4th power end.
The intelligent electric energy meter is supplemented with money in repeating installation, and the electric power management circuit includes transformer, decompression chip, electricity
Source control chip, the 6th inductance, the second thermistor, variable resistance, rectifier bridge, first diode, the second diode, the tenth
Capacitor, the 11st capacitor, the 12nd capacitor, the 13rd capacitor, thirteenth resistor, the 14th resistance and the 15th resistance；
1st foot of the transformer connects one end and the firewire of variable resistance by the second thermistor, transformer
The other end and zero curve of 3rd foot connection variable resistance, the 1st foot of the 4th foot connection rectifier bridge of transformer, the 5th of transformer the
Foot connects the 2nd foot of rectifier bridge, the anode of the 6th foot connection first diode of transformer, the tenth electricity of the 7th foot connection of transformer
The cathode of appearance and bus, the 3rd foot of rectifier bridge connects the anode of the 6th power end and the 11st capacitor, the 4th foot of rectifier bridge
The cathode and ground of the 11st capacitor are connected, the cathode of first diode connects the anode of the tenth capacitor and the Vin foot of decompression chip,
The Vout foot for being depressured chip connects third power end, with being depressured the ADJ foot connection bus of chip, the BST foot of power management chip
One end of the 13rd capacitor is connected by the 15th resistance；The VFB foot of power management chip passes through thirteenth resistor connection first
Power end also passes through the 14th resistance eutral grounding；The LX foot of power management chip connects the other end, the 6th inductance of the 13rd capacitor
One end and the second diode cathode, power management chip VIN foot connection power management chip CE and the 6th power end,
The other end of 6th inductance connects anode, the first power end and the 4th power end of the 12nd capacitor, the cathode of the 12nd capacitor
Connect the cathode and ground of the second diode.
Compared to the prior art, intelligent electric energy meter provided by the utility model supplements repeating installation with money, including is arranged in electricity box
Bluetooth in shell turns RS485 communication module and several intelligent electric energy meters；For carrying out RS485 communication on each intelligent electric energy meter
Each A terminal with the first conducting wire and connect, each B terminal is with the second conducting wire and connects, and the first conducting wire and the second conducting wire form RS485 bus
Turn RS485 communication module with bluetooth to be electrically connected；The bluetooth turns the authentication that RS485 communication module exports mobile terminal and refers to
It enabling or operational order is decrypted and validity check, format is converted to corresponding authentication signal or operation signal after verifying effectively,
Intelligent electric energy meter is sent to by RS485 bus；Intelligent electric energy meter executes corresponding certification according to authentication signal or operation signal
After processing or operation processing, feeds back authentication result signal or operating result signal and bluetooth turn is sent to by RS485 bus
RS485 communication module；Bluetooth turns RS485 communication module and carries out encryption and format turn to authentication result signal or operating result signal
It changes, authentication result data or operating result data is sent to mobile terminal by bluetooth.Due to leading to using connecting communication is localized
Cross bluetooth turn RS485 communication module substantially increase power consumer to intelligent electric energy meter operation (such as supplement with money or send a telegram in reply) success
Rate solves the problems, such as that existing intelligent electric energy meter remote recharge or telegram in reply failure rate are excessively high.
Detailed description of the invention
Fig. 1 is the structural block diagram that intelligent electric energy meter provided by the utility model supplements repeating installation with money.
Fig. 2 is the schematic diagram that intelligent electric energy meter provided by the utility model supplements repeating installation with money.
Fig. 3 is the circuit diagram that bluetooth provided by the utility model turns the bluetooth communication governor circuit in RS485 communication module.
Fig. 4 is the circuit diagram that bluetooth provided by the utility model turns the RS485 communicating circuit in RS485 communication module.
Fig. 5 is the circuit diagram that bluetooth provided by the utility model turns the encryption and decryption circuit in RS485 communication module.
Fig. 6 is the circuit diagram that bluetooth provided by the utility model turns the electric power management circuit in RS485 communication module.
Specific embodiment
The utility model provides a kind of intelligent electric energy meter and supplements repeating installation with money, a kind of is turned by increasing in electricity box with bluetooth
RS485 be medium device and intelligent electric energy meter establish connection, using user mobile phone as platform, by Ethernet be transmission channel with
Power supply company's database carries out data interaction, to make that power consumer is supplemented with money and (supplemented with money) or success rate of sending a telegram in reply is up to %, reaches zero visitor
It tells.It is right as follows in conjunction with drawings and embodiments to keep the purpose of this utility model, technical solution and effect clearer, clear
The utility model is further described.It should be appreciated that specific embodiment described herein is only to explain the utility model,
It is not used to limit the utility model.
Please refer to Fig. 1 and Fig. 2, it includes being arranged in electricity box that the utility model, which provides intelligent electric energy meter and supplements repeating installation with money,
Bluetooth in shell turn RS485 communication module 10 and several intelligent electric energy meters (in conventional electricity box intelligent electric energy meter number be 4 ~
16, for the present embodiment by taking 8 (21 ~ 28) as an example, the black block in figure indicates LCD display).Several intelligent electric energy meters pass through
Turn RS485 communication module 10 with bluetooth after RS485 bus parallel connection to be electrically connected, i.e., will be used to carry out RS485 on each intelligent electric energy meter
Communication the first conducting wire of each A terminal simultaneously connect and (be electrically connected the conducting wire), each B terminal is with the second conducting wire and connects, the first conducting wire with
Second conducting wire i.e. composition RS485 bus turns RS485 communication module 10 with bluetooth and is electrically connected.
The bluetooth turns the authentication instruction that RS485 communication module exports mobile terminal or operational order is decrypted
And validity check, format is converted to corresponding authentication signal or operation signal (inside is loaded with intelligent electric energy meter after verifying effectively
ID and User ID corresponding relationship), the corresponding intelligent electric energy meter of the user is sent to by RS485 bus；Intelligent electric energy meter
After executing corresponding authentication processing or operation processing according to authentication signal or operation signal, authentication result signal or operation knot are fed back
Fruit signal is simultaneously sent to bluetooth by RS485 bus and turns RS485 communication module；Bluetooth turns RS485 communication module to authentication result
Signal or operating result signal carry out encryption and format conversion (to send by bluetooth), send authentication result by bluetooth
Data or operating result data are to mobile terminal.
The authentication instruction verifies data command (inside is loaded with User ID) including ESAM, authentication instructs,
External identity certification instruction.Operational order includes recharge instruction, telegram in reply instruction, reads instruction.It is to be appreciated that if mobile whole
Operation of being supplemented with money or sent a telegram in reply is held, then needs first successively to send ESAM verification data command, authentication instruction, external identity
Certification instruction carries out authentication, and recharge instruction or telegram in reply instruction are retransmited after being proved to be successful.If be read out electricity, electric energy,
When the electric energy meters data manipulation such as voltage, electric current, power, it is not necessarily to authentication.Directly transmit reading instruction.
Illustrate that intelligent electric energy meter supplements repeating installation and mobile terminal with money by taking recharge instruction or telegram in reply instruction as an example below
Interaction flow.The interaction flow of other instructions is identical as recharge instruction or telegram in reply instruction, and only specific signal name is different, this
Place does not repeat.
It includes a shell that the bluetooth, which turns RS485 communication module 10, and the A for accessing RS485 bus is provided on shell
The B contact 12 of the A contact 11 at end and the end B for accessing RS485 bus；One circuit board, the circuit are set in the shell
Bluetooth communication governor circuit 13, RS485 communicating circuit 14, encryption and decryption circuit 15 and electric power management circuit 16 are provided on plate.Shell
Body is for fixing circuit board and protects the electronic device on circuit board.The bluetooth communication governor circuit 13 is mainly used for user hand
Machine provides communication connection, and completes the data interaction on S485 route and the verification of data finiteness.RS485 communicating circuit 14 is main
If supplementing all intelligent electric energy meter RS485 in repeating installation with money with intelligent electric energy meter and connecing, bidirectional data interaction is realized.Encryption and decryption
Circuit 15 mainly for the protection of the data in communication process safety, using national secret algorithm.
In the present embodiment, after bluetooth communication governor circuit 13 carries out coupling filtering to received recharge instruction or telegram in reply instruction
Output to encryption and decryption circuit 15 is decrypted, and exports corresponding 485 transmitting letter after carrying out validity check to the data-signal after decryption
Number.RS485 communicating circuit 14 generates according to 485 transmitting signals and corresponding supplements signal or multiplexed electrical signal with money and to be transmitted to RS485 total
Line, recharging result signal or telegram in reply consequential signal also according to RS485 bus transfer generate corresponding 485 and receive signal RXD-
485 and it is transmitted to bluetooth communication governor circuit 13.485 reception signal RXD-485 are transmitted to by bluetooth communication governor circuit 13 to be added
Decryption circuit 15 is encrypted, and encrypted data signal is converted to recharging result data or telegram in reply result data, bluetooth are sent
To mobile terminal.Electric power management circuit 16 supplies bluetooth communication governor circuit 13, RS485 communicating circuit 14 and encryption and decryption circuit 15
Electricity.
It is to be appreciated that the unique communication address that bluetooth can also be turned to RS485 communication module 10 is set as another two dimension
Code then corresponding printing or is pasted onto bluetooth and turns the surface of shell of RS485 communication module 10 and scan the two dimensional code and be also able to achieve scanning
Intelligent electric energy meter supplements the function of the two dimensional code in repeating installation with money.In this way when bluetooth turns RS485 10 failure replacement of communication module,
Two dimensional code also corresponding change is supplemented two dimensional code in repeating installation with money without altering intelligent electric energy meter, is convenient for changing.
Also referring to Fig. 3, the bluetooth communication governor circuit 13 includes that main control chip U1(model is preferably
CC2640F128RHB-VQFN32), antenna ANT, interface J1, the first crystal oscillator Y1, the second crystal oscillator Y2, the first inductance L1, the second electricity
Feel L2, third inductance L3, the 4th inductance L4, the 5th inductance L5, first resistor R1, first capacitor C1, the second capacitor C2, third electricity
Hold C3, the 4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6, the 7th capacitor C7 and the 8th capacitor C8；The main control chip U1's
DIO_0 foot, DIO_1 foot, DIO_5 foot are all connected with RS485 communicating circuit 14, DIO_2 foot, the DIO_3 foot, DIO_ of main control chip U1
4 feet, DIO_6 foot are all connected with encryption and decryption circuit 15, the DIO_7 foot of main control chip U1, DIO_8 foot, DIO_9 foot, DIO_10 foot,
The external gtag cd-rom recorder of DIO_11 foot, DIO_12 foot, DIO_13 foot, DIO_14 foot (for downloading program)；Main control chip U1
JTAG_TMSC foot connecting interface J1 the 1st foot, the 2nd foot of the JTAG_TCKC foot connecting interface J1 of main control chip U1, interface
The 3rd foot of J1 is grounded, and the 4th foot of interface J1 connects the first power end VCC；The RESET_N foot of main control chip U1 passes through the first electricity
Resistance the first power end of R1 connection VCC, it is also grounded by first capacitor C1；The VDDS2 foot of main control chip U1 connects the first power end
VCC；The VDDR_RF foot connection VDDR foot of main control chip U1 of main control chip U1, second source end VDDR, the 5th inductance L5 one
The one end at end and the 8th capacitor C8；The DCDC_SW foot of the other end connection main control chip U1 of 5th inductance L5, the 8th capacitor C8's
Other end ground connection；The RX_TX foot of main control chip U1 connects one end of the first inductance L1, also by the second capacitor C2 ground connection；Master control
The RF_N foot of chip U1 connects the other end, one end of the second inductance L2 and one end of third capacitor C3 of the first inductance L1；Master control
The RF_P foot of chip U1 connects the other end of the second inductance L2 and one end of third inductance L3, also by the 5th capacitor C5 ground connection；
The other end of the other end connection third inductance L3 of third capacitor C3 and one end of the 4th inductance L4, the other end of the 4th inductance L4
Connect antenna ANT, also by the 4th capacitor C4 ground connection；The 2nd foot of the first crystal oscillator Y1 of X32K_Q1 foot connection of main control chip U1,
Also it is grounded by the 7th capacitor C7；The X32K_Q2 foot of main control chip U1 connects the 1st foot of the first crystal oscillator Y1, also by the 6th electricity
Hold C6 ground connection；The X24M_N foot of main control chip U1 connects the 1st foot of the second crystal oscillator Y2, the X24M_P foot connection of main control chip U1 the
The 3rd foot of two crystal oscillator Y2, the 2nd foot of the second crystal oscillator Y2 connect the 4th foot and ground of the second crystal oscillator Y2.
In the present embodiment, main control chip U1 is (preferably to select the model CC2640F128RHB- of TI company production
The main control chip of VQFN32；The main control chip with the same function of other companies also can be selected in the specific implementation, model is such as
The QN9020 of nRF52832, nRF52822, NXP, QN9021 etc.), after the first crystal oscillator Y1 and the second crystal oscillator Y2 works, master control core
Piece U1 loads the operation program write in advance, and Bluetooth function makes to reinstate.When Bluetooth of mobile phone emits wireless signal (such as ESAM check number
According to) after, antenna ANT receives Bluetooth signal and (other end of the 4th inductance L4 passes through through the coupling inductance on the right of the 4th inductance L4
Coupling inductance connects antenna ANT) coupling, then the 4th electricity (by the 4th capacitor C4, the 4th inductance L4 and is connected to by the filtering of π type
Feel the capacitor composition between one end and ground of L4) processing, by the first inductance L1 and the second capacitor after being coupled by third capacitor C3
LC filtering is carried out, receives pin input from the RF_N of main control chip U1 later, main control chip U1 is parsed by internal processes
And decrypted by DIO_6 foot outputting data signals E-IO to encryption and decryption circuit 15, after the decryption fed back to encryption and decryption circuit 15
Data-signal E-IO carries out validity check, and corresponding 485 are generated after verify successfully and emits signal TXD-485 and from DIO_0 foot
Output.The DIO_1 foot of main control chip U1, which receives the 485 reception signal RXD-485 that RS485 communicating circuit 14 exports and is transmitted to, to be added
It decrypts circuit 15 to encrypt, encrypted data signal data is converted into recharging result data or telegram in reply result data and from RF-P
Foot and the output of RF-N foot filter using π type after the matching network matching of L2, C5, L3, C3 composition, pass through coupling inductance
It is coupled to antenna ANT and sends recharging result data or telegram in reply result data to mobile phone.The bluetooth of mobile phone receives correspondence at this time
Recharging result data or telegram in reply result data (a kind of reply data).
Referring to Figure 4 together, the RS485 communicating circuit 14 includes that RS485 communication chip U2(model is preferably
ZT13085E, also can be selected that function is consistent and the MAX485 or ME3385 of pin compatibility in the specific implementation), the first optocoupler IC1,
Second optocoupler IC2, third optocoupler IC3, inhibit diode TVS, the first thermistor PT(model MZ6), second resistance R2, the
Three resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8 and the 9th resistance R9；
The A foot of the RS485 communication chip U2 connects one end of second resistance R2, the end A of RS485 bus and inhibition diode TVS's
The other end of one end, second resistance R2 connects third power end+5V；The B foot connection of RS485 communication chip U2 inhibits diode
One end of the other end of TVS and the first thermistor PT are also grounded by 3rd resistor R3；The other end of first thermistor PT
The end B of RS485 bus is connected, the VCC foot of RS485 communication chip U2 connects third power end+5V；The D of RS485 communication chip U2
Foot connects emitter, also by the 8th resistance R8 connection bus the GND485 of the first optocoupler IC1；RS485 communication chip U2's
DE foot connects RS485 communication chip U2'sFoot connects bus with the emitter of third optocoupler IC3, also by the 6th resistance R6
Ground GND485；The R foot of RS485 communication chip U2 passes through the cathode of the 4th resistance R4 the second optocoupler of connection IC2, the first optocoupler IC1
Anode and the anode of third optocoupler IC3 be all connected with the 4th power end VDD, the cathode of the first optocoupler IC1 passes through the 7th resistance R7
Connect the DIO_0 foot of main control chip U1；The DIO_1 foot of the collector connection main control chip U1 of second optocoupler IC2 also passes through the 9th
The 4th power end VDD of resistance R9 connection；The cathode of third optocoupler IC3 passes through the DIO_5 of the 5th resistance R5 connection main control chip U1
The anode of foot, the collector of the first optocoupler IC1, the collector of third optocoupler IC3 and the second optocoupler IC2 is all connected with third power end
+5V。
In the present embodiment, 485 transmitting signal TXD-485 of main control chip U1 output access the after the 7th resistance R7 current limliting
The diode end of one optocoupler IC1, after the conducting of diode end, phototriode end senses level change, outside by transmitting tube
Output transmitting its output voltage values of signal TXD(depend on the resistance value of the 8th resistance R8) to the D foot of RS485 communication chip U2.Hair
It penetrates signal TXD and generates differential voltage by the both ends AB inside RS485 communication chip U2, formation is corresponding to supplement signal or telegram in reply with money
Signal is simultaneously sent in RS485 bus.
The A terminal and B terminal of intelligent electric energy meter receive supplement signal or multiplexed electrical signal with money after, verify data validity simultaneously executes
It is corresponding to supplement processing or telegram in reply processing with money, it feeds back recharging result signal or consequential signal of sending a telegram in reply is by its internal 485 chips hair
It is sent in RS485 bus.After the A foot and B foot of RS485 communication chip U2 receives recharging result signal or telegram in reply consequential signal, lead to
It crosses R foot and exports corresponding reception signal RXD, the diode end of the second optocoupler IC2 is sent to after the 4th resistance R4 current limliting, at this time
The diode current flow of second optocoupler IC2, photosensitive three pipe end sense that the level of variation, three pipes enter working condition, believe receiving
The emitted pole output of the data of number RXD is converted to corresponding 485 reception signal RXD-485 and is transmitted to the DIO_ of main control chip U1
1 foot.
Belong to half duplex communication chip based on RS485 communication chip U2, the DE foot of U2 andFoot is transmitting-receiving enable end.When
When main control chip U1 sends data to U2,485 enable signal EN_X485 are become low level by the DIO_5 foot of main control chip U1, this
When IC3 ON operation, the DE foot of U2 andFoot is high level, and U2 is in sending mode, the data-signal of main control chip U1 at this time
It could be sent to by U2 in RS485 bus.After main control chip U1 sends end of data to U2, the DIO_5 of main control chip U1
485 enable signal EN-X485 are become high level by foot, at this time IC3 off state, the DE foot of U2 andFoot is low level, at U2
In reception state, U2 can just receive the data of intelligent electric energy meter transmission.
Please refer to fig. 5, the encryption and decryption circuit 15 include ESAM encryption chip U3, triode Q1, the 9th capacitor C9,
Tenth resistance R10, eleventh resistor R11 and twelfth resistor R12；The 9th electricity of GND foot connection of the ESAM encryption chip U3
Hold one end and ground of C9, the DIO_6 foot of the I/O foot connection main control chip U1 of ESAM encryption chip U3 also passes through twelfth resistor
The 5th power end VCC-E of R12 connection；The DIO_4 foot of the CLK foot connection main control chip U1 of ESAM encryption chip U3；ESAM encryption
The DIO_3 foot of the RST foot connection main control chip U1 of chip U3 also passes through the 5th power end VCC-E of eleventh resistor R11 connection；
The VCC foot of ESAM encryption chip U3 connects the 5th power end VCC-E, the other end of the 9th capacitor C9 and the current collection of triode Q1
Pole；The base stage of triode Q1 passes through the DIO_2 foot of the tenth resistance R10 connection main control chip U1, the emitter connection of triode Q1
4th power end VDD.
In the present embodiment, ESAM encrypts the dedicated encryption and decryption of intelligent electric energy meter that U4 chip is national grid publication and communicates core
Piece, after U1 receives data (recharge instruction or telegram in reply instruct) by bluetooth, U1 will encrypt enable signal E- E-EN be set to it is low
Level, Q1 is PNP type triode, and when base stage is low level, Q1 conducting, VDD passes through resistance current limliting, emitted pole to collector shape
At the supply voltage on the 5th power end VCC-E, the 5th power end VCC-E provides power supply for ESAM encryption chip U3 at this time, U1
DIO_3 foot export low level encryption reset signal E-RST control U3 reset, then the DIO_4 foot output frequency of U1 is
The clock signal clk of 4MHz provides clock source for U3, and U3 can enter working condition.After U1 receives data by bluetooth, U1
DIO_6 foot outputting data signals E-IO to U3, feed back to U1 after carrying out data deciphering by the internal algorithm of U3, U1 passes through again
U2 is sent to intelligent electric energy meter.U1 is also exported 485 reception signal RXD-485(by RS485 communicating circuit 14) it exports as data
Signal E-IO is encrypted to U3, and encrypted data-signal E-IO feeds back to the end APP for being sent to mobile phone after U1 by bluetooth.
The data-signal E-IO transmitted between U3 and U1 is different in the meaning that different transmission processes represent.
Referring to Figure 6 together, the electric power management circuit 16 includes transformer T1, decompression chip U4(model
HT7550), power management chip U5(model R1244N001B or BD9676), the 6th inductance L6, the second thermistor PT2,
Variable resistance RU, rectifier bridge BD1, first diode D1, the second diode D2, the tenth capacitor C10, the 11st capacitor C11
(1000uF/35V), the 12nd capacitor C12(1000uF/35V), the 13rd capacitor C13(100uF/16V), thirteenth resistor
R13, the 14th resistance R14 and the 15th resistance R15；The 1st foot of the transformer T1 can by the second thermistor PT2 connection
One end of variohm RU and the firewire Ua of 220V, the other end and 220V of the 3rd foot connection variable resistance RU of transformer T1
Zero curve Un, the 1st foot of the 4th foot connection rectifier bridge BD1 of transformer T1, the of the 5th foot connection rectifier bridge BD1 of transformer T1
2 feet, the anode of the 6th foot connection first diode D1 of transformer T1, the 7th foot of transformer T1 connect the negative of the tenth capacitor C10
Pole and bus, the 3rd foot of rectifier bridge BD1 connects the anode of the 6th power end+12V and the 11st capacitor C11, rectifier bridge BD1
The 4th foot connect the cathode and ground of the 11st capacitor C11, the cathode of first diode D1 connect the tenth capacitor C10 anode and
It is depressured the Vin foot of chip U4, the Vout foot of decompression chip U4 connects third power end+5V, and the ADJ foot connection of decompression chip U4 is total
Line, the BST foot of power management chip U5 passes through one end of the 13rd capacitor C13 of the 15th resistance R15 connection；Power management core
The VFB foot of piece U5 is grounded by the first power end of thirteenth resistor R13 connection VCC, also by the 14th resistance R14；Power supply pipe
The LX foot for managing chip U5 connects the other end, one end of the 6th inductance L6 and the cathode of the second diode D2 of the 13rd capacitor C13,
The CE and the 6th power end+12V of the VIN foot connection power management chip U5 of power management chip U5, the 6th inductance L6's is another
Anode, the first power end VCC and the 4th power end VDD of the 12nd capacitor C12 of end connection, the cathode of the 12nd capacitor C12 connect
Connect the cathode and ground of the second diode D2.
In the present embodiment, firewire Ua and zero curve Un are by conducting wire access 220V alternating current, through RU lightning strike protection, PT2 over-voltage
It is depressured, 220V drop is exchanged at two-way (45,67) 10.5V, the 4th foot of T1 and the 5th foot are through BD1 bridge-type through transformer T1 after protection
Become direct current+12V after rectification, then through C11 low frequency filtering, the capacitor High frequency filter in parallel with C11.+ 12V voltage supplies U5 and carries out
The voltage of DC to DC (DC TO DC) adjusts, and+12V is adjusted and sends a telegraph 3.3V(VCC and VDD required for road), VCC herein
It mainly powers to main circuit with VDD.This circuit is that, by reducing voltage increase electric current, transformer is defeated by the advantage that U5 is depressured
+ 12V voltage, electric current 100mA out, can be obtained 3.3V voltage, electric current 350mA after U5；Conventional decompression chip is such as
Voltage is only dropped to 3.3V by 78L05, HT7550, but electric current not changing.The 6th foot of transformer T1 and the 7th foot are through D1 half-wave
After rectification, DC voltage 12V is obtained through C10 low frequency filtering, 12V is become fixed through U4 by the capacitor High frequency filter in parallel with C10
+ 5V output, herein+5V be mainly used for RS485 power supply.
In conclusion intelligent electric energy meter provided by the utility model is supplemented with money in repeating installation, intelligent electric energy meter is supplemented with money multiple
All intelligent electric energy meters are carried out with RS485 bus and fetch the bidirectional data interaction between progress and mobile terminal in electric installation.
Due to turning the success rate that RS485 communication module has ensured communication of supplementing with money or send a telegram in reply, warp by bluetooth using connecting communication is localized
Practical application detection can achieve 100% success rate.
It is understood that for those of ordinary skills, can with technical solution according to the present utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement all should belong to appended by the utility model
Scope of protection of the claims.
Claims (6)
1. a kind of intelligent electric energy meter supplements repeating installation with money, with mobile terminal bluetooth connection characterized by comprising be arranged in table
Bluetooth in tank shell turns RS485 communication module and several intelligent electric energy meters；
For carrying out each A terminal of RS485 communication with the first conducting wire and connecing, the second conducting wire of each B terminal on each intelligent electric energy meter
And connect, the first conducting wire and the second conducting wire composition RS485 bus turn RS485 communication module with bluetooth and are electrically connected；
The bluetooth turns the authentication instruction that RS485 communication module exports mobile terminal or operational order is decrypted and has
The verification of effect property, format is converted to corresponding authentication signal or operation signal after verifying effectively, is sent to intelligent electricity by RS485 bus
It can table；After intelligent electric energy meter executes corresponding authentication processing or operation processing according to authentication signal or operation signal, feedback certification
Consequential signal or operating result signal are simultaneously sent to bluetooth by RS485 bus and turn RS485 communication module；It is logical that bluetooth turns RS485
News module carries out encryption to authentication result signal or operating result signal and format is converted, and sends authentication result data by bluetooth
Or operating result data is to mobile terminal.
2. intelligent electric energy meter according to claim 1 supplements repeating installation with money, which is characterized in that it is logical that the bluetooth turns RS485
Interrogating module includes a shell, the A contact at the end A for accessing RS485 bus is provided on shell and for accessing RS485 bus
The end B B contact；One circuit board is set in the shell, is provided with bluetooth communication governor circuit, RS485 on the circuit board
Communicating circuit, encryption and decryption circuit and electric power management circuit；
Output extremely adds after the bluetooth communication governor circuit carries out coupling filtering to received authentication instruction or operational order
Circuit decryption is decrypted, exports corresponding 485 transmitting signal after carrying out validity check to the data-signal after decryption；
RS485 communicating circuit generates corresponding authentication signal or operation signal according to 485 transmitting signals and to be transmitted to RS485 total
Line, authentication result signal or operating result signal also according to RS485 bus transfer generate corresponding 485 reception signal and transmit
To bluetooth communication governor circuit；
485 reception signals are transmitted to encryption and decryption circuit and encrypted by bluetooth communication governor circuit, and encrypted data signal is turned
It is changed to authentication result data or operating result data, bluetooth is sent to mobile terminal；
Electric power management circuit powers to bluetooth communication governor circuit, RS485 communicating circuit and encryption and decryption circuit.
3. intelligent electric energy meter according to claim 2 supplements repeating installation with money, which is characterized in that the bluetooth communication master control electricity
Road includes main control chip, antenna, interface, the first crystal oscillator, the second crystal oscillator, the first inductance, the second inductance, third inductance, the 4th electricity
Sense, the 5th inductance, first resistor, first capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor,
Seven capacitors and the 8th capacitor；
DIO_0 foot, DIO_1 foot, the DIO_5 foot of the main control chip are all connected with RS485 communicating circuit, the DIO_2 of main control chip
Foot, DIO_3 foot, DIO_4 foot, DIO_6 foot are all connected with encryption and decryption circuit；The 1st of the JTAG_TMSC foot connecting interface of main control chip
Foot, the 2nd foot of the JTAG_TCKC foot connecting interface of main control chip, the 3rd foot ground connection of interface, the first electricity of the 4th foot connection of interface
Source；The RESET_N foot of main control chip connects the first power end by first resistor, also by first capacitor ground connection；Master control core
The VDDS2 foot of piece connects the first power end；The VDDR_RF foot connection VDDR foot of main control chip of main control chip, second source end,
One end of 5th inductance and one end of the 8th capacitor；The DCDC_SW foot of the other end connection main control chip of 5th inductance, the 8th electricity
The other end of appearance is grounded；The RX_TX foot of main control chip connects one end of the first inductance, also passes through the second capacity earth；Master control core
The RF_N foot of piece connects the other end, one end of the second inductance and one end of third capacitor of the first inductance；The RF_P of main control chip
Foot connects the other end of the second inductance and one end of third inductance, also passes through the 5th capacity earth；The other end of third capacitor connects
Connect the other end of third inductance and one end of the 4th inductance, the other end connection antenna of the 4th inductance is also connect by the 4th capacitor
Ground；The X32K_Q1 foot of main control chip connects the 2nd foot of the first crystal oscillator, also passes through the 7th capacity earth；The X32K_ of main control chip
Q2 foot connects the 1st foot of the first crystal oscillator, also passes through the 6th capacity earth；The X24M_N foot of main control chip connects the of the second crystal oscillator
1 foot, the X24M_P foot of main control chip connect the 3rd foot of the second crystal oscillator, and the 2nd foot of the second crystal oscillator connects the 4th foot of the second crystal oscillator
The ground and.
4. intelligent electric energy meter according to claim 3 supplements repeating installation with money, which is characterized in that the RS485 communicating circuit
Including RS485 communication chip, the first optocoupler, the second optocoupler, third optocoupler, inhibit diode, the first thermistor, the second electricity
Resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance and the 9th resistance；
The A foot of the RS485 communication chip connects one end of second resistance, the end A of RS485 bus and inhibition diode TVS's
The other end of one end, second resistance connects third power end；The B foot connection of RS485 communication chip inhibits the other end of diode
It is grounded with one end of the first thermistor, also by 3rd resistor；The B of the other end connection RS485 bus of first thermistor
The VCC foot at end, RS485 communication chip connects third power end；The emitter of D foot the first optocoupler of connection of RS485 communication chip,
Also with connecting bus by the 8th resistance；The foot connection RS485 communication chip of RS485 communication chip U2Foot and third light
The emitter of coupling also passes through the 6th resistance with connecting bus；The R foot of RS485 communication chip connects the second light by the 4th resistance
The cathode of coupling, the anode of the first optocoupler and the anode of third optocoupler are all connected with the 4th power end, and the cathode of the first optocoupler passes through the
The DIO_0 foot of seven resistance connection main control chip；The DIO_1 foot of the collector connection main control chip of second optocoupler also passes through the 9th
Resistance connects the 4th power end；The cathode of third optocoupler connects the DIO_5 foot of main control chip by the 5th resistance, the first optocoupler
The anode of collector, the collector of third optocoupler and the second optocoupler is all connected with third power end.
5. intelligent electric energy meter according to claim 4 supplements repeating installation with money, which is characterized in that the encryption and decryption circuit includes
ESAM encryption chip, triode, the 9th capacitor, the tenth resistance, eleventh resistor and twelfth resistor；
The GND foot of the ESAM encryption chip connects one end and ground of the 9th capacitor, and the I/O foot of ESAM encryption chip connects master control
The DIO_6 foot of chip also passes through twelfth resistor the 5th power end of connection；The CLK foot of ESAM encryption chip connects main control chip
DIO_4 foot；The DIO_3 foot of the RST foot connection main control chip of ESAM encryption chip also passes through the 5th electricity of eleventh resistor connection
Source；The VCC foot of ESAM encryption chip connects the 5th power end, the other end of the 9th capacitor and the collector of triode；Three poles
The base stage of pipe connects the DIO_2 foot of main control chip by the tenth resistance, and the emitter of triode connects the 4th power end.
6. intelligent electric energy meter according to claim 5 supplements repeating installation with money, which is characterized in that the electric power management circuit packet
Include transformer, decompression chip, power management chip, the 6th inductance, the second thermistor, variable resistance, rectifier bridge, the one or two
Pole pipe, the second diode, the tenth capacitor, the 11st capacitor, the 12nd capacitor, the 13rd capacitor, thirteenth resistor, the 14th electricity
Resistance and the 15th resistance；
1st foot of the transformer connects one end and the firewire of variable resistance, the 3rd foot of transformer by the second thermistor
Connect the other end and zero curve of variable resistance, the 1st foot of the 4th foot connection rectifier bridge of transformer, the 5th foot connection of transformer
2nd foot of rectifier bridge, the anode of the 6th foot connection first diode of transformer, the 7th foot of transformer connect the negative of the tenth capacitor
Pole and bus, the 3rd foot of rectifier bridge connect the anode of the 6th power end and the 11st capacitor, the 4th foot connection of rectifier bridge the
The cathode and ground of 11 capacitors, the cathode of first diode connect the anode of the tenth capacitor and the Vin foot of decompression chip, are depressured core
The Vout foot of piece connects third power end, and with being depressured the ADJ foot connection bus of chip, the BST foot of power management chip passes through the
15 resistance connect one end of the 13rd capacitor；The VFB foot of power management chip by thirteenth resistor connect the first power end,
Also pass through the 14th resistance eutral grounding；The LX foot of power management chip connects one end of the other end of the 13rd capacitor, the 6th inductance
With the cathode of the second diode, the CE and the 6th power end of the VIN foot connection power management chip of power management chip, the 6th electricity
The other end of sense connects anode, the first power end and the 4th power end of the 12nd capacitor, the cathode connection of the 12nd capacitor the
The cathode and ground of two diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820732244.2U CN208189020U (en) | 2018-05-17 | 2018-05-17 | A kind of intelligent electric energy meter supplements repeating installation with money |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820732244.2U CN208189020U (en) | 2018-05-17 | 2018-05-17 | A kind of intelligent electric energy meter supplements repeating installation with money |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112399394A (en) * | 2020-10-30 | 2021-02-23 | 国网湖南省电力有限公司 | Intelligent electric energy meter system based on Bluetooth communication and communication method thereof |
| CN112399393A (en) * | 2020-10-30 | 2021-02-23 | 国网湖南省电力有限公司 | Intelligent electric energy meter device and communication method thereof |
-
2018
- 2018-05-17 CN CN201820732244.2U patent/CN208189020U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112399394A (en) * | 2020-10-30 | 2021-02-23 | 国网湖南省电力有限公司 | Intelligent electric energy meter system based on Bluetooth communication and communication method thereof |
| CN112399393A (en) * | 2020-10-30 | 2021-02-23 | 国网湖南省电力有限公司 | Intelligent electric energy meter device and communication method thereof |
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