CN104683118B - Power supply communication device and method based on MBUS - Google Patents
Power supply communication device and method based on MBUS Download PDFInfo
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- CN104683118B CN104683118B CN201510059125.6A CN201510059125A CN104683118B CN 104683118 B CN104683118 B CN 104683118B CN 201510059125 A CN201510059125 A CN 201510059125A CN 104683118 B CN104683118 B CN 104683118B
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Abstract
The present invention is included on a kind of power supply communication device and method based on MBus, device therein：Modulation-demodulation circuit is used to the sequence of voltage pulses in MBus is demodulated into Transistor-Transistor Logic level signal and transmitted to slave devices, and the Transistor-Transistor Logic level signal modulation of slave devices for current pulse sequence and is transmitted to MBus；Rectification circuit is used for the HVDC electric signal that non-polar MBus signals are converted to 20 42V；It is first energy-storage units constant-current charge that high voltage charge circuit, which is used for using HVDC electric signal,；Voltage conversion circuit is used to being converted to HVDC electric signal into the low-voltage direct electric signal no more than 5V；It is second energy-storage units constant-current charge that low pressure charging circuit, which is used for using low-voltage direct electric signal,；Voltage threshold control circuit is used in the case where the voltage of second energy-storage units reaches predetermined voltage threshold values, it is allowed to which second energy-storage units provide electric energy for slave devices.The present invention improves MBus stability and reliability.
Description
Technical field
The present invention relates to MBus technologies, more particularly to a kind of power supply communication device and method based on MBUS.
Background technology
MBus (Meter Bus, meter bus) is a kind of new bus structures.Multiple MBus slave devices (can also
Referred to as substation or slave devices) MBus is accessed with parallel way respectively, MBus utilizes two non-polar transmission lines while reality
The power supply and communication of existing MBus slave devices.
Inventor has found in process of the present invention is realized：MBus slave devices can have moment consumption during operation etc.
The phenomenon of larger current, if during MBus carries out data signal transmission, it is larger that moment consumption occur in MBus slave devices
The phenomenon of electric current, then the data-signal generation harmful effect that the phenomenon can be to transmitting in MBus.Existing MBUS power supplies and communication
Technology can not only avoid the harmful effect, but also presence can not provide 24V/36V high pressures for slave devices such as magnetic valves
The problem of electric energy.
In view of problem present in the above-mentioned existing power supply communication based on MBus, the present inventor is based on being engaged in such production
Product manufacture and design abundant for many years practical experience and professional knowledge, and coordinate scientific principle to use, and are actively subject to research and innovation, to
A kind of new power supply communication device and method based on MBUS is founded, can solve the problem that and deposited in the existing power supply communication based on MBus
The problem of, it is had more practicality.By constantly research, design, after studying sample repeatedly and improving, create finally
Set out the present invention having practical value.
The content of the invention
It is an object of the present invention to solve problem present in the existing power supply communication technology based on MBus, and provide
A kind of new power supply communication device and method based on MBus, problem to be solved include：Avoid MBus slave devices moments
The phenomenon of larger current is consumed to transmitting the harmful effect of data-signal in MBus, while is also provided as the slave devices such as magnetic valve
The high voltage electric energy for meeting its demand is provided.
The purpose of the present invention and solve its technical problem and can be realized using following technical scheme.
According to a kind of power supply communication device based on MBus proposed by the present invention, slave devices are connected by the device and MBus
Connect, and the device includes：MBus interfaces, modulation-demodulation circuit, rectification circuit, high voltage charge circuit, voltage conversion circuit, low pressure
Charging circuit, first energy-storage units, second energy-storage units, voltage threshold control circuit and slave devices interface；MBus interfaces,
For being connected with MBus；Modulation-demodulation circuit, it is connected respectively with MBus interfaces and slave devices communication interface, for by MBus
Sequence of voltage pulses be demodulated into TTL logic level signals and transmitted by slave devices interface to slave devices；Slave is set
It is standby transmitted by slave devices interface the Transistor-Transistor Logic level signal modulation come be current pulse sequence and by MBus interfaces transmit to
MBus, while it using its electric current sucked in modulated process is first energy-storage units constant-current charge to control high voltage charge circuit；
Rectification circuit, it is connected with MBus interfaces, for the non-polar MBus signals in MBus to be converted to 20-42V HVDC
Electric signal；High voltage charge circuit, it is connected with rectification circuit, for utilizing the HVDC electric signal in modulation-demodulation circuit control
It is first energy-storage units constant-current charge that system is lower, and first energy-storage units provide high-tension electricity by slave devices interface for slave devices
Energy；Voltage conversion circuit, it is connected with rectification circuit, for the HVDC electric signal to be converted to the low-pressure direct no more than 5V
Flow electric signal；Low pressure charging circuit, is connected with voltage conversion circuit, for being the second energy storage using the low-voltage direct electric signal
Unit constant-current charge；Voltage threshold control circuit, it is connected respectively with second energy-storage units and slave devices interface, for second
In the case that the voltage of energy-storage units reaches predetermined voltage threshold values, it is allowed to which second energy-storage units are slave by slave devices interface
Equipment provides low-voltage electric energy.
The purpose of the present invention and solve its technical problem and can also be further achieved by the following technical measures.
Preferably, the foregoing power supply communication device based on MBus, wherein protection circuit is provided with the MBus interfaces,
For providing overcurrent protection and overvoltage protection for slave devices.
Preferably, the foregoing power supply communication device based on MBus, wherein protection circuit include：Self-resetting fuse.
Preferably, the foregoing power supply communication device based on MBus, wherein protection circuit include：TVS transient voltages suppress
Device.
Preferably, the foregoing power supply communication device based on MBus, wherein the first energy-storage units and the second energy storage list
Member includes respectively：Storage capacitor.
Preferably, the foregoing power supply communication device based on MBus, wherein the high voltage charge circuit and/or low pressure charging
Overcharge protection circuit is provided with circuit.
The present invention also provides a kind of power supply communication method based on MBUS, and this method includes：Data communication step and rectification
Step, and this method also includes：First energizing step and/or the second energizing step；Data communication step：By the voltage in MBus
Pulse train is demodulated into transistor-transistor logic Transistor-Transistor Logic level signal and transmitted to slave devices, and slave devices transmission is come
Transistor-Transistor Logic level signal modulation is current pulse sequence and transmitted to MBus；Rectifying step：By the non-polar MBus signals in MBus
Be converted to 20V-42V HVDC electric signal；First energizing step：It is the first energy storage list using the HVDC electric signal
First constant-current charge, and be first energy-storage units constant-current charge using the electric current sucked in above-mentioned modulated process, first energy-storage units
For providing high voltage electric energy for slave devices；Second energizing step：The HVDC electric signal is converted to no more than 5V's
Low-voltage direct electric signal, it is second energy-storage units constant-current charge using the low-voltage direct electric signal, and in second energy-storage units
In voltage reach predetermined voltage threshold values in the case of, it is allowed to second energy-storage units provide electric energy for slave devices.
Preferably, the foregoing power supply communication method based on MBus, wherein first energizing step and/or the second power supply
Step also includes：There is provided for first energy-storage units and/or second energy-storage units and overcharge protection.
By above-mentioned technical proposal, the power supply communication device and method of the invention based on MBus at least has following advantages
And beneficial effect：The present invention uses high-voltage charging mode as the first storage by using the non-polar MBus signals obtained from MBus
Energy unit constant-current charge, and be simultaneously second energy-storage units constant-current charge after voltage conversion, so, the first energy storage can be utilized
Unit and second energy-storage units provide the high voltage electric energy and low-voltage electric energy of dimension for slave devices；In addition, in slave devices
In the case of moment consumption larger current, first energy-storage units and second energy-storage units can meet MBus slave devices completely
The moment power demand, so as to effectively prevent the data transmitted during the moment consumption larger current of slave devices appearance to MBus
This problem of the harmful effect of signal；Final technical scheme provided by the invention improves MBus stability and reliability, and
Meet the power demand of a variety of slave devices.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow the present invention above and other purpose, feature and advantage energy
Enough become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description of the drawings
Fig. 1 is the structural representation of the power supply communication device based on MBUS of the present invention.
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, to the specific embodiment party according to the power supply communication device and method proposed by the present invention based on MBus
Formula, structure, feature and its effect, describe in detail as after.
Embodiment one, the power supply communication device based on MBus.
The power supply communication device based on MBus of the present embodiment had both been connected with slave devices, was also connected simultaneously with MBus,
That is the power supply communication device based on MBus of the present embodiment is the interface equipment between slave devices and MBus, slave is set
For after MBus is accessed by the device of the present embodiment, slave devices can realize power supply and information communication based on MBus.
One example of the structure of power supply communication device of the present embodiment based on MBUS is as shown in Figure 1.
In Fig. 1, the power supply communication device based on MBUS of the present embodiment mainly includes：MBus interfaces 100, modulation /demodulation electricity
Road 110, rectification circuit 120, high voltage charge circuit 130, voltage conversion circuit 140, low pressure charging circuit 150, the first energy storage list
Member 160, second energy-storage units 170, voltage threshold control circuit 180 and slave devices interface 190；Wherein, modulation /demodulation electricity
Road 110 is connected respectively with MBus interfaces 100 and slave devices interface 190, rectification circuit 120 and MBus interfaces 100, high-voltage charging
Circuit 130 and voltage conversion circuit 140 connect respectively, and low pressure charging circuit 150 stores up with voltage conversion circuit 140 and second
Energy unit 170 connects respectively, and first energy-storage units 160 connect respectively with high voltage charge circuit 130 and slave devices interface 190
Connect, voltage threshold control circuit 180 is connected respectively with second energy-storage units 170 and slave devices interface 190.In addition, modulation
Demodulator circuit 110 is also connected with high voltage charge circuit 130.
MBus interfaces 100 are the device access MBus of the present embodiment interfaces, i.e. the device of the present embodiment is connect by MBus
Mouth 100 is connected with MBus.MBus interfaces 100 are mainly used in the electric signal (i.e. non-polar MBus signals) in MBus and hair
The data-signal (i.e. sequence of voltage pulses) for giving slave devices is incorporated into the device of the present embodiment, and by with the present embodiment
The data-signal (i.e. Transistor-Transistor Logic level signal) that the slave devices of device connection are sent is transmitted in the form of current pulse sequence to MBus
In.
Protection circuit can be provided with MBus interfaces 100, with pair slave devices being connected with the device of the present embodiment
At least one of overcurrent protection and overvoltage protection circuit protection are provided.The protection circuit can include the insurance of electric current Self-resetting
Silk, to realize overcurrent protection.In addition, the protection circuit can include TVS (TRANSIENT VOLTAGE SUPPRESSOR,
Transient Voltage Suppressor), to realize overvoltage protection.Protection circuit in MBus interfaces 100 for slave devices by providing excessively stream
Protection and overvoltage protection, can effectively prevent ESD (Electro-Static discharge, Electro-static Driven Comb) to slave devices
Interference, be advantageous to the functional reliability of rear end slave devices.
Sequence of voltage pulses in the MBus that modulation-demodulation circuit 110 is mainly used in providing MBus interfaces 100 is demodulated into
TTL (Transistor-Transistor Logic, transistor-transistor logic) level signal, and pass through slave devices interface
190 transmit the Transistor-Transistor Logic level signal after demodulation to slave devices；Modulation-demodulation circuit 110 is also mainly used in leading to slave devices
It is current pulse sequence to cross the Transistor-Transistor Logic level signal modulation that the transmission of slave devices interface 190 comes, and by the current impulse sequence after modulation
Row are transmitted into MBus by MBus interfaces 100.
Modulation-demodulation circuit 110 can be made up of existing discrete device, as modulation-demodulation circuit 110 includes voltage threshold
Decision circuitry (such as comparator), modulation-demodulation circuit 110 will be transmitted using the voltage threshold decision circuitry via MBus interfaces 100
Sequence of voltage pulses in the MBUS come is demodulated into Transistor-Transistor Logic level signal；For another example modulation-demodulation circuit 110 is adjusted including transistor current
Circuit processed, modulation-demodulation circuit 110 using transistor current modulation circuit by via slave devices interface 190 transmit come TTL
Level signal is modulated to current pulse sequence；In addition, modulation-demodulation circuit 110 can also utilize what it was sucked in modulated process
Electric current gives the constant-current charge of first energy-storage units 160 by high voltage charge circuit 130.
Rectification circuit 120 is mainly used in the non-polar MBus signals in MBus being converted to HVDC electric signal.This
In high pressure be relative to voltage conversion circuit 140 export DC signal voltage for, i.e., rectification circuit 120 is whole
The voltage of the DC signal exported after stream process is higher than the direct current that voltage conversion circuit 140 exports after voltage conversion processing
The voltage of signal.High pressure in the present embodiment specifically refers to the voltage in the range of 20V-42V, and the voltage range includes
The two end values of 20V and 42V.The present embodiment can use the existing physical circuit that can realize above-mentioned rectification processing.
It is the first energy storage that high voltage charge circuit 130, which is mainly used in using the HVDC electric signal that rectification circuit 120 exports,
The constant-current charge of unit 160.Overcharge protection circuit can be included in the high voltage charge circuit 130, to prevent high voltage charge circuit
130 pairs of first energy-storage units 160 carry out over-pressed charging, and then can protect the slave devices of rear end.
High voltage charge circuit 130 in the present embodiment can include：Single operational amplifier, resistor network and positive-negative-positive three
The components such as pole pipe, it is the first energy storage that the circuit being made up of single operational amplifier and resistor network, which can drive PNP type triode,
Unit 160 carries out constant-current charge.
PNP type triode in the high voltage charge circuit 130 of the present embodiment is modulated process in modulation-demodulation circuit 110
In be switched on, make high voltage charge circuit 130 for first energy-storage units 160 carry out constant flow high pressure charging.In addition, high voltage charge circuit
PNP type triode in 130 can be also switched in the case where slave devices transmission carrys out low-potential signal, make high voltage charge circuit
130 be that first energy-storage units 160 carry out constant flow high pressure charging.
Voltage conversion circuit 140 is mainly used in the HVDC electric signal that rectification circuit 120 exports being converted to low-pressure direct
Flow electric signal.Here low pressure is for the voltage for the DC signal that rectification circuit 120 exports.In the present embodiment
Low pressure specifically refer to voltage no more than 12V.The voltage conversion circuit of the present embodiment is in the voltage conversion using super low-power consumption
In the case of circuit, by 24V/1mA Power convert into 5V/4mA power supply when, conversion efficiency can reach more than 65%.
The low-voltage direct electric signal that low pressure charging circuit 150 is mainly used in exporting using voltage conversion circuit 140 is second
Energy-storage units 170 carry out constant-current charge.Low pressure charging circuit 150 in the present embodiment can include：Single operational amplifier, resistance
The component such as network and PNP type triode, the circuit being made up of single operational amplifier and resistor network can drive positive-negative-positive three
Pole pipe is that second energy-storage units 170 carry out constant-current charge.It can include overcharge protection circuit in the low pressure charging circuit 150,
To prevent low pressure charging circuit 150 from second energy-storage units 170 are carried out with over-pressed charging, and then the slave of rear end can be protected to set
It is standby.
First energy-storage units 160 are mainly used in providing high voltage electric energy by slave devices interface 190 for slave devices.At this
In embodiment, the direct subject due to providing high voltage electric energy for slave devices is first energy-storage units 160, rather than directly by
MBus provides high voltage electric energy for slave devices, and first energy-storage units 160 itself have energy storage feature, therefore, in slave devices
When the phenomenon that moment needs larger current occurs in (such as magnetic valve), first energy-storage units 160 can meet slave devices completely
High current consumption requirements, so as to which harmful effect will not be produced to the data-signal transmitted in MBus.First energy-storage units 160 are usual
It can be realized using the electric capacity of dimension.
Second energy-storage units 170 are mainly used in providing low-voltage electric energy by slave devices interface 190 for slave devices.Equally
, in the present embodiment, the direct subject that low-voltage electric energy is provided for slave devices is second energy-storage units 170, rather than directly
By MBus low-voltage electric energy is provided for slave devices.Second energy-storage units 170 can generally be realized using the electric capacity of dimension.
Voltage threshold control circuit 180 is mainly used in controlling whether second energy-storage units 170 can provide for slave devices
Low-voltage electric energy, specifically, voltage threshold control circuit 180 be not reaching in the voltage for monitoring second energy-storage units 170 it is predetermined
In the case of threshold voltage, forbid second energy-storage units 170 to provide low-voltage electric energy for slave devices, and monitor the second energy storage
In the case that the voltage of unit 170 reaches predetermined voltage threshold values, it is allowed to which second energy-storage units 170 pass through slave devices interface 190
Low-voltage electric energy is provided for slave devices.
Because the device of the present embodiment uses low pressure charging circuit 150 with constant current charging method to second energy-storage units 170
Charged, therefore, in the case where the stored energy capacitance of second energy-storage units 170 is relatively large, the electricity of second energy-storage units 170
Pressure rises more slow.The present embodiment in order to ensure slave devices when electric on MBUS can normal reset work, thus utilization
Voltage threshold control circuit 180 carries out voltage threshold control to the voltage of second energy-storage units 170；Specifically, in the second energy storage
When the voltage of unit 170 reaches predetermined voltage threshold values, the control of voltage threshold control circuit 180 second energy-storage units 170 can be
Slave devices provide electric energy, enable slave devices normal reset and work；And the voltage in second energy-storage units 170 does not reach
During to predetermined voltage threshold values, voltage threshold control circuit 180 controls second energy-storage units 170 to forbid providing electricity for slave devices
Energy.It follows that for second energy-storage units 170, voltage threshold control circuit 180 serves the effect of a switch.
Predetermined voltage threshold values in the present embodiment can be with slave devices working condition it is different and different.One
Specific example, under normal circumstances, second energy-storage units 170 should be the voltage that slave devices provide 3.6V, be opened in MBus power-up
In the case of dynamic, voltage threshold control circuit 180 is when the voltage for monitoring second energy-storage units 170 reaches 3.3V, it is allowed to the
Two energy-storage units 170 provide low-voltage electric energy for slave devices, are protected so as to provide reliable voltage for the electrifying startup of slave devices
Barrier；Voltage threshold control circuit 180 forbids the second energy storage when the voltage for monitoring second energy-storage units 170 is not up to 3.3V
Unit 170 provides low-voltage electric energy for slave devices, so as to which the voltage that slave devices need to wait until second energy-storage units 170 later reaches
, could electrifying startup in the case of 3.3V.Another specific example, second energy-storage units 170 should generally be slave devices
3.6V voltage is provided, in the case where slave devices are currently in normal operating conditions, voltage threshold control circuit 180
When the voltage for monitoring second energy-storage units 170 is more than 2.5V, it is allowed to which second energy-storage units 170 provide low pressure for slave devices
Electric energy, so that slave devices continue normal work, voltage threshold control circuit 180 is monitoring second energy-storage units 170
In the case that voltage drops to below 2.5V, second energy-storage units 170 are forbidden to provide low-voltage electric energy for slave devices, so as to slave
Equipment is forced closed.
Slave devices interface 190 is the interface for the power supply communication device based on MBUS that slave devices access the present embodiment,
I.e. the device of the present embodiment is connected by slave devices interface 190 with slave devices.
Slave devices interface 190 is mainly used in the high voltage electric energy of first energy-storage units 160, second energy-storage units 170
The TTL signal that low-voltage electric energy and the transmission of modulation-demodulation circuit 110 come is supplied to slave devices.Slave devices interface 190 is also main
The TTL signal for being used to send slave devices is transferred to modulation-demodulation circuit 110, allows modulation-demodulation circuit 110 will
TTL signal from slave devices is transmitted into MBus in the form of current pulse sequence.
From the description of above-mentioned the present embodiment, the present embodiment additionally need not individually be equipped with power supply for slave devices
Equipment, and in the case of providing electric energy merely with MBus for slave devices, it can not only realize the consumption of slave devices normal work
Electrical phenomena will not substantially have harmful effect to the real-time Communication for Power in MBus, but also can be that the slave devices such as magnetic valve carry
For the high voltage electric energy (such as 24V/36V) of dimension, the MBus reliable and stable power supply of two-wire system network and logical is truly realized
Telecommunication function.
Embodiment two, the power supply communication method based on MBus.
The method of the present embodiment mainly includes data communication step and rectifying step, and the method for the present embodiment also includes：
At least one energizing step in first energizing step and the second energizing step.
The data communication step of the present embodiment mainly includes：Sequence of voltage pulses in MBus is demodulated into Transistor-Transistor Logic level letter
Number, and the Transistor-Transistor Logic level signal after demodulating is transmitted to slave devices；The Transistor-Transistor Logic level signal modulation that slave devices transmission is come
For current pulse sequence, and the current pulse sequence after modulation is transmitted to MBus.Further, since can be from suction in modulated process
Enter electric current to realize signal modulation, therefore, the present embodiment can give the first energy storage list while modulation treatment using the electric current
First 160 constant-current charges.
Rectifying step mainly includes：Non-polar MBus signals in MBus are converted to 20V-42V high voltage direct current
Signal.
First energizing step mainly includes：The HVDC electric signal obtained using rectifying step is entered for first energy-storage units
Row constant-current charge, so that first energy-storage units can provide the high voltage electric energy of dimension for slave devices.The present embodiment exists
During for first energy-storage units constant-current charge, it can be provided for first energy-storage units and overcharge protection.In the present embodiment
One energy-storage units can not only carry out constant-current charge in modulated process, can also carry out constant-current charge when its voltage is relatively low, such as exist
When slave devices transmission carrys out low level signal, the HVDC electric signal that the present embodiment is obtained using rectifying step is to the first energy storage
Unit carries out constant flow high pressure charging.
Second energizing step mainly includes：The HVDC electric signal that rectifying step obtains is converted to low no more than 5V
DC signal is pressed, is that second energy-storage units carry out constant-current charge using the low-voltage direct electric signal, so that the second storage afterwards
Energy unit can be the low-voltage electric energy that slave devices provide up predetermined voltage threshold values.Specifically, in the electricity of second energy-storage units
In the case that pressure reaches predetermined voltage threshold values, it is allowed to which second energy-storage units provide low-voltage electric energy for slave devices, in the second energy storage
In the case that the voltage of unit is not up to predetermined voltage threshold values, second energy-storage units are forbidden to provide low-voltage electric energy for slave devices.
The present embodiment can provide for second energy-storage units during for second energy-storage units constant-current charge and overcharge protection.
In addition, the present embodiment can also provide overcurrent protection and overvoltage protection for slave devices, effectively to prevent ESD pairs
The interference of slave devices, be advantageous to the functional reliability of rear end slave devices.
Described above is only presently preferred embodiments of the present invention, not makees any formal limitation to the present invention, though
So the present invention is disclosed above with preferred embodiment, however, foregoing description is not limited to the present invention, it is any to be familiar with this specialty
Technical staff do not departing from the range of technical scheme, when the technology contents using the disclosure above make it is a little more
Equivalent embodiment that is dynamic or being modified to equivalent variations, as long as being the content without departing from technical solution of the present invention, according to the present invention's
Any simple modification, equivalent change and modification that technical spirit is made to above example, still falls within technical solution of the present invention
In the range of.
Claims (8)
1. a kind of power supply communication device based on MBus, it is characterised in that slave devices are connected by the device with MBus, and should
Device includes：MBus interfaces, modulation-demodulation circuit, rectification circuit, high voltage charge circuit, voltage conversion circuit, low pressure charging electricity
Road, first energy-storage units, second energy-storage units, voltage threshold control circuit and slave devices interface；
MBus interfaces, for being connected with MBus；
Modulation-demodulation circuit, it is connected respectively with MBus interfaces and slave devices communication interface, for by the voltage pulse in MBus
Sequence is demodulated into TTL logic level signals and transmitted by slave devices interface to slave devices；Slave devices are passed through into slave
The Transistor-Transistor Logic level signal modulation that equipment interface transmission comes is current pulse sequence and is transmitted by MBus interfaces to MBus, same to time control
High voltage charge circuit processed is first energy-storage units constant-current charge using its electric current sucked in modulated process；
Rectification circuit, it is connected with MBus interfaces, for the non-polar MBus signals in MBus to be converted to 20-42V high pressure
DC signal；
High voltage charge circuit, it is connected with rectification circuit, for being controlled using the HVDC electric signal in modulation-demodulation circuit
It is down first energy-storage units constant-current charge, and first energy-storage units provide high-tension electricity by slave devices interface for slave devices
Energy；
Voltage conversion circuit, it is connected with rectification circuit, for the HVDC electric signal to be converted to the low pressure no more than 5V
DC signal；
Low pressure charging circuit, is connected with voltage conversion circuit, for being second energy-storage units using the low-voltage direct electric signal
Constant-current charge；
Voltage threshold control circuit, it is connected respectively with second energy-storage units and slave devices interface, in second energy-storage units
Voltage reach predetermined voltage threshold values in the case of, it is allowed to second energy-storage units are provided by slave devices interface for slave devices
Low-voltage electric energy.
2. device as claimed in claim 1, it is characterised in that be provided with protection circuit in the MBus interfaces, for for from
Machine equipment provides overcurrent protection and overvoltage protection.
3. device as claimed in claim 2, it is characterised in that the protection circuit includes：Self-resetting fuse.
4. device as claimed in claim 2, it is characterised in that the protection circuit includes：TVS Transient Voltage Suppressors.
5. the device as described in any claim in Claims 1-4, it is characterised in that the first energy-storage units and
Two energy-storage units include respectively：Storage capacitor.
6. the device as described in any claim in Claims 1-4, it is characterised in that the high voltage charge circuit and/or
Overcharge protection circuit is provided with low pressure charging circuit.
A kind of 7. power supply communication method based on MBUS, it is characterised in that this method includes：Data communication step and rectification step
Suddenly, and this method also includes：First energizing step and/or the second energizing step；
Data communication step：Sequence of voltage pulses in MBus is demodulated into transistor-transistor logic Transistor-Transistor Logic level signal and passed
Slave devices are transported to, the Transistor-Transistor Logic level signal modulation that slave devices transmission comes for current pulse sequence and is transmitted to MBus；
Rectifying step：Non-polar MBus signals in MBus are converted to 20V-42V HVDC electric signal；
First energizing step：It is first energy-storage units constant-current charge using the HVDC electric signal, and utilizes above-mentioned modulation
During the electric current that sucks be first energy-storage units constant-current charge, first energy-storage units are used to provide high-tension electricity for slave devices
Energy；Wherein, the first energy-storage units provide high voltage electric energy by slave devices interface for slave devices；
Second energizing step：The HVDC electric signal is converted into the low-voltage direct electric signal no more than 5V, using described
Low-voltage direct electric signal is second energy-storage units constant-current charge, and the voltage in second energy-storage units reaches predetermined voltage threshold values
In the case of, it is allowed to second energy-storage units provide electric energy for slave devices；Wherein, the second energy-storage units pass through slave devices
Interface provides low-voltage electric energy for slave devices.
8. method as claimed in claim 7, it is characterised in that first energizing step and/or the second energizing step also wrap
Include：There is provided for first energy-storage units and/or second energy-storage units and overcharge protection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510059125.6A CN104683118B (en) | 2015-02-04 | 2015-02-04 | Power supply communication device and method based on MBUS |
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| CN201510059125.6A CN104683118B (en) | 2015-02-04 | 2015-02-04 | Power supply communication device and method based on MBUS |
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| CN104683118B true CN104683118B (en) | 2017-11-14 |
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| CN111587611B (en) * | 2018-01-18 | 2023-08-29 | 昕诺飞控股有限公司 | Energy storage unit charged by constant current driver |
| EP3949076A4 (en) * | 2019-04-04 | 2023-03-15 | Hark Technologies AS | A power adaption circuit |
| CN111327114B (en) * | 2020-03-11 | 2023-02-03 | 瑞纳智能设备股份有限公司 | MBUS bus power supply system and multi-slave node load balancing method |
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| ITMI20051248A1 (en) * | 2005-07-01 | 2007-01-02 | Vimar Spa | MODEM FOR BUS FOR CIVIL AND INDUSTRIAL ELECTRICAL SYSTEMS |
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| CN104683118A (en) | 2015-06-03 |
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Address after: 231131 Anhui province Changfeng Shuangfeng Economic Development Zone Xia Feng East Road Hefei City No. 039 Patentee after: The intelligent equipment Limited by Share Ltd Address before: 231131 Anhui province Changfeng Shuangfeng Economic Development Zone Xia Feng East Road Hefei City No. 039 Patentee before: Hefei Runa Metering Co., Ltd. |
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