CN208538317U - Micropower wireless multi-channel protocol converter - Google Patents
Micropower wireless multi-channel protocol converter Download PDFInfo
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
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Abstract
The utility model provides micropower wireless multi-channel protocol converter, belong to circuit field, including system control module and power module, system control module includes MCU main control module and real-time clock module, and MBUS communication module, micropower wireless uplink communication module, micropower downlink wireless communication module and memory module are also connected on MCU main control module；MBUS communication modes, 485 communication modes, micro-power wireless communication mode, uplink communication support micropower wireless mode are supported by downgoing communication；Downgoing communication each way all supports the configuration of 188 agreement of water meter, electric energy meter 645 agreement, gas meter, flow meter communications protocol, can configure various agreements and protocol parameter according to collection in worksite situation.Uplink communication uses micropower wireless mode, and uplink communication uses 376.1 communications protocol.And then the real time data acquisition of multichannel multi-protocols is carried out to electricity, water, gas meter, artificial inputs and resources waste can greatly be reduced, promote smart city construction.
Description
Technical field
The utility model belongs to circuit field, in particular to micropower wireless multi-channel protocol converter.
Background technique
All residential households electricity consumption, water, Every household has an ammeter for gas wideling popularize for country various regions at present, and electricity, water, the long-range of gas are copied
Table technology is also increasingly mature, but the management of electricity, water, gas is all established one's own system, and three systems are fought separately, respectively by oneself industry
Management mode is carried out the work, although can not be formed due to trade management in meter reading problem there are many similarity
The meter reader of resource-sharing, each company can only distinguish respective meter reading, not only bother bothersome, but also indirectly waste human resources.
Electric energy meter acquisition at present mainly uses based on 485 meter reading modes, and communications protocol is 645 electric energy meter agreements；Water meter is adopted
For mode set based on MBUS communication and micropower wireless mode, communications protocol is 188 agreements；Gas meter, flow meter mainly use micropower without
The meter reading of line mode, communications protocol are gas meter, flow meter copy reading agreement.Electricity, water, gas use different communications protocol and communication modes, existing
Scheme cannot be carried out while be acquired to water, electricity, gas table, so developing one can be to electricity, water, gas, different communication modes, no
A kind of multi-channel multi-mode protocol converter of acquisition can be converted simultaneously with communications protocol.
Utility model content
In order to solve shortcoming and defect existing in the prior art, the utility model provides micropower wireless multi-channel association
Converter is discussed, various agreements and protocol parameter can be configured according to collection in worksite situation.
In order to reach above-mentioned technical purpose, the utility model provides micropower wireless multi-channel protocol converter, described
The power module that converter includes system control module and connect with system control module, powers for system control module, institute
State system control module, comprising:
MCU main control module and real-time clock module, real-time clock module are connect by iic bus with MCU main control module,
MBUS communication module, micropower wireless uplink communication module, micropower downlink wireless communication mould are also connected on MCU main control module
Block and memory module；
Wherein, MBUS communication module includes that MBUS transmitting line and MBUS receive circuit, and MBUS transmitting line includes U15,
The voltage input end of U15 is grounded through capacitor C43, while the voltage input end of U15 connects the end VINBUS, the voltage output end of U15
It being connect through diode D5 with the MBUS+ pin of MCU main control module, the ground terminal of U15 is successively grounded through resistance R80, R24, R82,
The voltage output end of U15 is also connect through resistance R84 with the C pin of optocoupler O5, and the L pin of optocoupler O5 is connected to resistance R24, R82
Between, the A pin of optocoupler O5 is connect through resistance R49 with system power supply VDD33, K pin and the MCU main control module of optocoupler O5
The connection of TX_BUS pin, is additionally provided with overcurrent protection PTC2 chip on MCU main control module.
It optionally, further include real-time clock module in the main system control module, the real-time clock module includes:
Clock chip circuit and clock power control circuit；
Wherein, clock chip circuit includes RX8025T chip, and INTA, INTB, SCL and SDA of RX8025T chip draw
Foot is connect through resistance R12 with system power supply VDD33；
Clock power control circuit includes battery BT1, and the cathode of battery BT1 connects 3.6V lithium battery, the anode of battery BT1
It is connect through metal-oxide-semiconductor Q1, zener diode D4 with MCU main control module V_RT pin, the grid of metal-oxide-semiconductor Q1 is grounded through resistance R17, surely
Press the cathode of diode D4 successively through diode D3, D2, D1 and system power supply VDD50 connection, in V_RT pin successively through parallel connection
Capacitor C8, C10 ground connection.
It optionally, further include indicating lamp module in the main system control module, the indicating lamp module includes four complete
Consistent indicator light sub-circuit, the indicator light sub-circuit include:
The anode of diode 14, diode D14 is connect with system power supply VDD33, and the cathode of diode D14 is through resistance R68
It is connected with the collector of triode Q2, the base stage of Q2 is connect through resistance with the SX_TXD_LED pin of MCU main control module, the hair of Q2
Emitter grounding.
Optionally, the power module includes 3.3V conversion circuit, and the 3.3V conversion circuit includes:
First decompression chip, input terminal, enable end and the 12V feeder ear of power module output of the first decompression chip connect
It connects, the output end of the first decompression chip is connect with the input terminal of the second decompression chip, and the adjustment end of the first decompression chip is through resistance
R16, R14 and system power supply VDD50 connection, the one end of resistance R14 far from resistance R16 are grounded through resistance R10；
The output end of second decompression chip is connect with system power supply VDD33, and system power supply VDD33 is grounded through capacitor C11, the
The ground terminal of two decompression chips, the end BYD are grounded.
Optionally, the power module includes 35V conversion circuit, and the 35V conversion circuit includes:
Third is depressured chip, and the input terminal of third decompression chip is connect with the 35V feeder ear that system power supply exports, third drop
The SHDN pin of pressure chip is connect through resistance R54 with 35V feeder ear, and the CB of third decompression chip draws foot meridian capacitor C25, diode
The CB pin of D8 ground connection, third decompression chip is connect through inductance L2 with the V485 pin of MCU main control module, and third is depressured chip
FB pin is connected through the V485 pin of resistance R55, R56 and MCU main control module, while the GND of FB pin and third decompression chip
Pin ground connection.
Technical solution provided by the utility model has the benefit that
MBUS communication modes, 485 communication modes, micro-power wireless communication mode, uplink communication are supported by downgoing communication
Support micropower wireless mode；Downgoing communication each way all supports 188 agreement of water meter, 645 agreement of electric energy meter, gas meter, flow meter communication
The configuration of agreement can configure various agreements and protocol parameter according to collection in worksite situation.Uplink communication uses micropower
Wireless mode, uplink communication use 376.1 communications protocol.And then the data for carrying out multichannel multi-protocols to electricity, water, gas meter are real-time
Acquisition can greatly reduce artificial inputs and resources waste, promote smart city construction.
Detailed description of the invention
It, below will be to needed in embodiment description in order to illustrate more clearly of the technical solution of the utility model
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, additionally it is possible to obtain other according to these attached drawings
Attached drawing.
Fig. 1 is the structural schematic diagram of micropower wireless multi-channel protocol converter provided by the utility model；
Fig. 2 is the structural schematic diagram of 12V power supply provided by the utility model；
Fig. 3 (a) is the structural schematic diagram of real-time clock module provided by the utility model；
Fig. 3 (b) is the structural schematic diagram of real-time clock module provided by the utility model；
Fig. 4 is the structural schematic diagram of MBUS communicating circuit provided by the utility model.
Specific embodiment
To keep the structure and advantage of the utility model clearer, make below in conjunction with structure of the attached drawing to the utility model
It is further described through.
Embodiment one
The utility model provides micropower wireless multi-channel protocol converter, as shown in Figure 1, the converter includes being
System control module and the power module for connecting with system control module, powering for system control module, the system control mould
Block, comprising:
MCU main control module and real-time clock module, real-time clock module are connect by iic bus with MCU main control module,
MBUS communication module, micropower wireless uplink communication module, micropower downlink wireless communication mould are also connected on MCU main control module
Block and memory module；
Wherein, MBUS communication module includes that MBUS transmitting line and MBUS receive circuit, and MBUS transmitting line includes U15,
The voltage input end of U15 is grounded through capacitor C43, while the voltage input end of U15 connects the end VIN BUS, the voltage output end of U15
It being connect through diode D5 with the MBUS+ pin of MCU main control module, the ground terminal of U15 is successively grounded through resistance R80, R24, R82,
The voltage output end of U15 is also connect through resistance R84 with the C pin of optocoupler O5, and the L pin of optocoupler O5 is connected to resistance R24, R82
Between, the A pin of optocoupler O5 is connect through resistance R49 with system power supply VDD33, K pin and the MCU main control module of optocoupler O5
The connection of TX_BUS pin, is additionally provided with overcurrent protection PTC2 chip on MCU main control module.
In an implementation, power module provides power supply for system control module.Power module passes through switch electricity by 220V power supply
Source exports the independent current source of 2 groups of isolation.One group of power supply exports 12V voltage, one group of output 35V voltage.Switching Power Supply model is BD_
SW_1_V1.1。
As shown in Fig. 2, one group of 12V power supply provides micropower wireless uplink module and inactivity downlink wireless module work electricity
Source is 5V power supply by SPX29302T5 chip voltage, and it is MCU that 5V power supply, which is 3.3V by CAT6219-330TD chip voltage,
Main control module, real-time clock module, instruction lamp control module, memory module provide power supply.
One group of 35V power supply is depressured by AOZ1282CI and provides power supply for 5V for 485 communication modules.It is by LM317 decompression
MBUS communicating circuit provides power supply.The 2nd foot of optocoupler D5 connects the 55th foot of CPU, and when CPU pin exports high level, VMBUS+ is defeated
Power supply is 30.6V out, and when this pin exports low level, VMBUS+ out-put supply is 20V.
It include MCU main control module in the main system control module, real-time clock module, 485 communication modules, micropower is wireless
Uplink communication module, micropower downlink wireless communication module, MBUS communication module, memory module, instruction lamp control module and red
Outer debugging module；
MCU main control module is made of MCU chip STM32F091VC and peripheral crystal oscillating circuit and detection of power loss chip.Periphery
Crystal oscillator Y1 uses 8M crystal oscillator, and detection of power loss chip U23 can be when system voltage be lower than 2.93V using S-80126CLMC-JIZ
MCU is resetted, system reliability is increased.MCU chip is connected by iic bus with real-time clock module；Pass through UART serial ports and 485
Communicating circuit connection；It is connect by UART serial ports with micropower wireless uplink module；By UART serial ports and micropower it is wireless under
The connection of row module；It is connect by UART serial ports with MBUS communication module；It is connect by spi bus with memory module, passes through control
I/O pin exports control instructions lamp control circuit.
Real-time clock module, the real-time clock module include: clock chip circuit and clock power control circuit；Its
In, as shown in Fig. 3 (a), clock chip circuit includes RX8025T chip, INTA, INTB, SCL and SDA of RX8025T chip
Pin is connect through resistance R12 with system power supply VDD33；
As shown in Fig. 3 (b), clock power control circuit includes battery BT1, and the cathode of battery BT1 connects 3.6V lithium battery,
The anode of battery BT1 is connect through metal-oxide-semiconductor Q1, zener diode D4 with MCU main control module V_RT pin, the grid warp of metal-oxide-semiconductor Q1
Resistance R17 ground connection, the cathode of zener diode D4 is successively through diode D3, D2, D1 and system power supply VDD50 connection, in V_RT
Pin is successively grounded through capacitor C8, C10 in parallel.
The real-time clock module performance: the error of time of day of timing unit≤± 0.5s/d.Converter can receive concentrator
Or the clock of local handheld device calls survey and clock synchronization order together.After converter power supply interrupts, data and clock can at least be protected
It holds two months.When power up, saves data and do not lose, internal clocking operates normally.
The circuit advantage: clock accuracy is high, and error of time of day is small, and power down clock operates normally.In the case that 220V powers
Clock power is provided by system 5V (VDD50) power supply by 32 pole pipes (D1, D2, D3) decompressions, by 3.6V in the case where power failure
Lithium battery BT1 is provided, and normal clock runs the time limit and is not less than 10 years.
Memory module selects serial FLASH, and selection chip is MX25L25635E, which has 256M-BIT memory capacity,
The chip is connect by spi bus with CPU.The data space of large capacity can to water, electricity, gas table carry out address administration and
Data-frozen storage, can save nearest 1 month collected water, electricity, gas table real time data.
485 communication modules: 485 communication modules use 485 chip I SL3152, exchange data by UART serial ports with CPU.
The 485 circuit advantage, baud rate support 2400-115200, support parity check bit configuration, can be according to different tables
Shape parameter configures corresponding parity check bit and baud rate, can acquire data under -40 degree to the wide temperature environment of+75 degree, acquire
Data success rate is not less than 99.9%.485 communication interfaces belong to downgoing communication interface, support 645 agreement of electric energy meter, water meter 188
Agreement, gas meter, flow meter communications protocol.
As shown in figure 4, the transmitting line of MBUS communicating circuit is made of chip LM317 (U15) and peripheral Resistor-Capacitor Unit,.
The first foot of optocoupler O5 R49 pulls up welding system power supply, and the 2nd foot connects the 55th foot of CPU, when CPU pin exports high level, O5 the
3 the 4th pins are not turned on, and VMBUS+ out-put supply is 30.6V, and when this pin exports low level, the 3rd the 4th pin of O5 is not turned on,
VMBUS+ out-put supply is that 20V. adds 36V bidirectionally conductive TVS pipe SMBJ36CA in MBUS bus, plays over-voltage to bus voltage
Protection increases overcurrent protection PTC (PTC2 chip) and cuts off bus connection when MBUS mouthfuls of electric currents are more than 100MA, plays overcurrent guarantor
Shield.
It is exported using software control power supply, power supply supply all the way can be reduced, reduce hardware cost, all circuits, which use, to be divided
Vertical element, reduces hardware cost.Communication baud rate supports 2400-115200, supports parity check bit configuration, can be according to different
Phenotypic parameter configures corresponding parity check bit and baud rate, can acquire data under -40 degree to the wide temperature environment of+75 degree, adopt
Collect data success rate and is not less than 99.9%.MBUS communication interface belongs to downgoing communication interface and supports 645 agreement of electric energy meter, water meter
188 agreements, gas meter, flow meter communications protocol.
Micropower wireless uplink communication module: micropower wireless uplink communication module uses FC-623J micropower module, adjusts
Mode GFSK processed, frequency range (470-510) MHz, micropower wireless uplink communication module is by being wirelessly connected platform area micropower
Concentrator will be sent to platform area concentrator on water, electricity, gas, meter reading data, handle reported data main website using platform area concentrator.
Communication uses 376.1 communications protocol between micropower wireless uplink module and platform area concentrator.Ad hoc network function is supported in wireless telecommunications
Energy.
It is big to can be avoided wired installing engineering difficulty by using wireless transmission method, the problem of heavy workload.
Micropower downlink wireless communication module: micropower downlink wireless communication module uses FX-106J micropower module, leads to
News frequency rate: the free frequency range of 433MHZ.Communication modes: half-duplex.Communication speed: 10K bps.Single-point wireless transmission distance: spacious
It is greater than 500 meters of micropower wireless uplink communication modules under environment and belongs to uplink communication interface support 645 agreement of electric energy meter, water meter
188 agreements, gas meter, flow meter communications protocol.
It further include indicating lamp module in the main system control module, the indicating lamp module includes four completely the same fingers
Show that lamp sub-circuit, the indicator light sub-circuit include:
The anode of diode 14, diode D14 is connect with system power supply VDD33, and the cathode of diode D14 is through resistance R68
It is connected with the collector of triode Q2, the base stage of Q2 is connect through resistance with the SX_TXD_LED pin of MCU main control module, the hair of Q2
Emitter grounding.
Indicating lamp control circuit: indicating lamp control circuit includes uplink communication lamp, downgoing communication lamp, alarm indicator, fortune
Portable lighter.CPU exports low and high level by control IO to light or extinguish indicator light.The uplink when uplink communication has data transmit-receive
Morse signal light is lighted, and data give a green light when sending, and is sent out a warning when receiving data.The downlink morse signal light when downgoing communication has data transmit-receive
It lights, data give a green light when sending, and send out a warning when receiving data.When there is alarm to generate, warning light is bright.When converter is run just
It is often to dodge the running indicator second, failure is judged according to ignition frequency when abnormal.
Optionally, the power module includes 3.3V conversion circuit, and the 3.3V conversion circuit includes:
First decompression chip, input terminal, enable end and the 12V feeder ear of power module output of the first decompression chip connect
It connects, the output end of the first decompression chip is connect with the input terminal of the second decompression chip, and the adjustment end of the first decompression chip is through resistance
R16, R14 and system power supply VDD50 connection, the one end of resistance R14 far from resistance R16 are grounded through resistance R10；
The output end of second decompression chip is connect with system power supply VDD33, and system power supply VDD33 is grounded through capacitor C11, the
The ground terminal of two decompression chips, the end BYD are grounded.
Optionally, the power module includes 35V conversion circuit, and the 35V conversion circuit includes:
Third is depressured chip, and the input terminal of third decompression chip is connect with the 35V feeder ear that system power supply exports, third drop
The SHDN pin of pressure chip is connect through resistance R54 with 35V feeder ear, and the CB of third decompression chip draws foot meridian capacitor C25, diode
The CB pin of D8 ground connection, third decompression chip is connect through inductance L2 with the V485 pin of MCU main control module, and third is depressured chip
FB pin is connected through the V485 pin of resistance R55, R56 and MCU main control module, while the GND of FB pin and third decompression chip
Pin ground connection.
The utility model provides micropower wireless multi-channel protocol converter, including system control module and power supply mould
Block, system control module include MCU main control module and real-time clock module, and real-time clock module passes through iic bus and MCU master control
Module connection, be also connected on MCU main control module MBUS communication module, micropower wireless uplink communication module, micropower without
Line downgoing communication module and memory module；MBUS communication module includes MBUS transmitting line and MBUS receives circuit, MBUS hair
Power transmission road includes U15, and the voltage input end of U15 is grounded through capacitor C43, while the voltage input end of U15 connects the end VIN BUS,
The voltage output end of U15 is connect through diode D5 with the MBUS+ pin of MCU main control module, and the ground terminal of U15 is successively through resistance
R80, R24, R82 ground connection, the voltage output end of U15 are also connect through resistance R84 with the C pin of optocoupler O5, and the L pin of optocoupler O5 connects
Connect between resistance R24, R82, the A pin of optocoupler O5 is connect through resistance R49 with system power supply VDD33, the K pin of optocoupler O5 with
The TX_BUS pin of MCU main control module connects, and overcurrent protection PTC2 chip is additionally provided on MCU main control module.It is logical by downlink
News support MBUS communication modes, 485 communication modes, micro-power wireless communication mode, uplink communication support micropower wireless mode；
Downgoing communication each way all supports the configuration of 188 agreement of water meter, electric energy meter 645 agreement, gas meter, flow meter communications protocol, being capable of basis
Collection in worksite situation configures various agreements and protocol parameter.Uplink communication uses micropower wireless mode, and uplink communication is adopted
With 376.1 communications protocol.And then the real time data acquisition of multichannel multi-protocols is carried out to electricity, water, gas meter, can greatly be reduced
Artificial inputs and resources waste, promotes smart city construction.
Each serial number in above-described embodiment is for illustration only, the assembling for not representing each component or the elder generation in use process
Sequence afterwards.
The above description is only the embodiments of the present invention, is not intended to limit the utility model, all in the utility model
Spirit and principle within, any modification, equivalent replacement, improvement and so on should be included in the protection model of the utility model
Within enclosing.
Claims (5)
1. micropower wireless multi-channel protocol converter, the converter includes system control module and and system control module
Connection, the power module powered for system control module, which is characterized in that the system control module, comprising:
MCU main control module and real-time clock module, real-time clock module is connect by iic bus with MCU main control module, in MCU
MBUS communication module, micropower wireless uplink communication module, micropower downlink wireless communication module are also connected on main control module
And memory module；
Wherein, MBUS communication module includes that MBUS transmitting line and MBUS receive circuit, and MBUS transmitting line includes U15, U15's
Voltage input end is grounded through capacitor C43, while the voltage input end of U15 connects the end VIN BUS, and the voltage output end of U15 is through two
Pole pipe D5 is connect with the MBUS+ pin of MCU main control module, and the ground terminal of U15 is successively grounded through resistance R80, R24, R82, U15's
Voltage output end is also connect through resistance R84 with the C pin of optocoupler O5, and the L pin of optocoupler O5 is connected between resistance R24, R82,
The A pin of optocoupler O5 is connect through resistance R49 with system power supply VDD33, the K pin of optocoupler O5 and the TX_BUS of MCU main control module
Pin connection, is additionally provided with overcurrent protection PTC2 chip on MCU main control module.
2. micropower wireless multi-channel protocol converter according to claim 1, which is characterized in that the system master mould
It further include real-time clock module in block, the real-time clock module includes:
Clock chip circuit and clock power control circuit；
Wherein, clock chip circuit includes RX8025T chip, and INTA, INTB, SCL and SDA pin of RX8025T chip are equal
It is connect through resistance R12 with system power supply VDD33；
Clock power control circuit includes battery BT1, and the cathode of battery BT1 connects 3.6V lithium battery, the anode warp of battery BT1
Metal-oxide-semiconductor Q1, zener diode D4 are connect with MCU main control module V_RT pin, and the grid of metal-oxide-semiconductor Q1 is grounded through resistance R17, pressure stabilizing
The cathode of diode D4 is successively through diode D3, D2, D1 and system power supply VDD50 connection, in V_RT pin successively through parallel connection
Capacitor C8, C10 ground connection.
3. micropower wireless multi-channel protocol converter according to claim 1, which is characterized in that the system master mould
It further include indicating lamp module in block, the indicating lamp module includes four completely the same indicator light sub-circuits, the indicator light
Sub-circuit includes:
The anode of diode 14, diode D14 is connect with system power supply VDD33, and the cathode of diode D14 is through resistance R68 and three
The collector of pole pipe Q2 is connected, and the base stage of Q2 is connect through resistance with the SX_TXD_LED pin of MCU main control module, the emitter of Q2
Ground connection.
4. micropower wireless multi-channel protocol converter according to claim 1, which is characterized in that the power module packet
3.3V conversion circuit is included, the 3.3V conversion circuit includes:
First decompression chip, input terminal, enable end and the 12V feeder ear of power module output of the first decompression chip connect, the
One decompression chip output end with second decompression chip input terminal connect, first be depressured chip adjustment end through resistance R16,
R14 is connect with system power supply VDD50, and the one end of resistance R14 far from resistance R16 is grounded through resistance R10；
The output end of second decompression chip is connect with system power supply VDD33, and system power supply VDD33 is grounded through capacitor C11, the second drop
The ground terminal of chip, the end BYD is pressed to be grounded.
5. micropower wireless multi-channel protocol converter according to claim 1, which is characterized in that the power module packet
35V conversion circuit is included, the 35V conversion circuit includes:
Third is depressured chip, and the input terminal of third decompression chip is connect with the 35V feeder ear that system power supply exports, and third is depressured core
The SHDN pin of piece is connect through resistance R54 with 35V feeder ear, and the CB of third decompression chip draws foot meridian capacitor C25, diode D8 connects
The CB pin on ground, third decompression chip is connect through inductance L2 with the V485 pin of MCU main control module, and the FB of third decompression chip draws
Foot is connected through the V485 pin of resistance R55, R56 and MCU main control module, while the GND pin of FB pin and third decompression chip
Ground connection.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108806225A (en) * | 2018-08-09 | 2018-11-13 | 浙江八达电子仪表有限公司 | Micropower wireless multi-channel protocol converter |
| CN110441595A (en) * | 2019-04-23 | 2019-11-12 | 浙江八达电子仪表有限公司 | Three-phase intelligent electric-energy meter based on AC-DC high frequency conversion power supply |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108806225A (en) * | 2018-08-09 | 2018-11-13 | 浙江八达电子仪表有限公司 | Micropower wireless multi-channel protocol converter |
| CN110441595A (en) * | 2019-04-23 | 2019-11-12 | 浙江八达电子仪表有限公司 | Three-phase intelligent electric-energy meter based on AC-DC high frequency conversion power supply |
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