CN104683118A - MBUS (Meter Bus)-based power supply communication device and method - Google Patents
MBUS (Meter Bus)-based power supply communication device and method Download PDFInfo
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Abstract
The invention relates to an MBUS-based power supply communication device and method. The device comprises a modulation/demodulation circuit, a rectifying circuit, a high-voltage charging circuit, a voltage conversion circuit, a low-voltage charging circuit and a voltage threshold control circuit; the modulation/demodulation circuit is used for demodulating a voltage pulse sequence in MBus into a TTL (Transistor-Transistor Logic) level signal and transmitting the TTL level signal to slave equipment, and modulating the TTL level signal of the slave equipment into a current pulse sequence and transmitting the current pulse sequence to the MBus; the rectifying circuit is used for converting a nonpolar MBus signal into a 20-42V high-voltage direct-current signal; the high-voltage charging circuit is used for charging a first energy storage unit at a constant current by using the high-voltage direct-current signal; the voltage conversion circuit is used for converting the high-voltage direct-current signal into a low-voltage direct-current signal not more than 5V; the low-voltage charging circuit is used for charging a second energy storage unit at a constant current by using the low-voltage direct-current signal; the voltage threshold control circuit is used for allowing the second energy storage unit to supply electric energy to the slave equipment under the condition that the voltage of the second energy storage unit reaches a preset voltage threshold. According to the device and the method, the stability and the reliability of MBus are improved.
Description
Technical field
The present invention relates to MBus technology, particularly relate to a kind of power supply communication device and method based on MBUS.
Background technology
MBus (Meter Bus, meter bus) is a kind of novel bus structures.Multiple MBus slave devices (also can be called substation or slave devices) utilizes two non-polar transmission lines to realize power supply and the communication of MBus slave devices with parallel way access MBus, MBus respectively simultaneously.
Inventor is realizing finding in process of the present invention: MBus slave devices can exist the phenomenon consuming larger current instantaneously in the processes such as operation, if carry out in data-signal transmitting procedure at MBus, there is the phenomenon consuming larger current instantaneously in MBus slave devices, then this phenomenon can produce harmful effect to the data-signal transmitted in MBus.Existing MBUS powers and the communication technology not only can not avoid this harmful effect, but also exists and can not provide the problem of 24V/36V high voltage electric energy for slave devices such as electromagnetically operated valves.
Because above-mentioned existing based on Problems existing in the power supply communication of MBus, the present inventor is based on being engaged in the practical experience and professional knowledge that this type of product design manufacture enriches for many years, and coordinate scientific principle to use, actively in addition research and innovation, to founding a kind of power supply communication device and method based on MBUS newly, can solve existing based on Problems existing in the power supply communication of MBus, make it have more practicality.Through constantly research, design, through repeatedly studying sample and after improving, finally creating the present invention had practical value.
Summary of the invention
The object of the invention is to, solve existing based on Problems existing in the power supply communication technology of MBus, and a kind of power supply communication device and method based on MBus is newly provided, problem to be solved comprises: avoid MBus slave devices to consume the phenomenon of larger current instantaneously to the harmful effect of transmission of data signals in MBus, be also provided as the slave devices such as electromagnetically operated valve simultaneously and provide the high voltage electric energy meeting its demand.
Object of the present invention and solve its technical problem and can adopt following technical scheme to realize.
According to a kind of power supply communication device based on MBus that the present invention proposes, slave devices is connected with MBus by this device, and this device comprises: MBus interface, modulation-demodulation circuit, rectification circuit, high voltage charge circuit, voltage conversion circuit, low pressure charging circuit, the first energy-storage units, the second energy-storage units, voltage threshold control circuit and slave devices interface; MBus interface, for being connected with MBus; Modulation-demodulation circuit, is connected respectively with MBus interface and slave devices communication interface, for the sequence of voltage pulses in MBus being demodulated into TTL logic level signal and transferring to slave devices by slave devices interface; Be current pulse sequence by the Transistor-Transistor Logic level signal madulation that slave devices is come by the transmission of slave devices interface and transfer to MBus by MBus interface, the electric current that control high voltage charge circuit utilizes it to suck in modulated process is simultaneously the first energy-storage units constant current charge; Rectification circuit, is connected with MBus interface, for the non-polar MBus signal in MBus being converted to the high voltage direct current signal of telecommunication of 20-42V; High voltage charge circuit, is connected with rectification circuit, for utilize the described high voltage direct current signal of telecommunication modulation-demodulation circuit control under be the first energy-storage units constant current charge, and the first energy-storage units by slave devices interface for slave devices provides high voltage electric energy; Voltage conversion circuit, is connected with rectification circuit, for the described high voltage direct current signal of telecommunication being converted to the low-voltage direct signal of telecommunication being no more than 5V; Low pressure charging circuit, is connected with voltage conversion circuit, is the second energy-storage units constant current charge for utilizing the described low-voltage direct signal of telecommunication; Voltage threshold control circuit, is connected respectively with the second energy-storage units and slave devices interface, for when the voltage of the second energy-storage units reaches predetermined voltage threshold values, allows the second energy-storage units by slave devices interface for slave devices provides low-voltage electric energy.
Object of the present invention and solve its technical problem and can also be further achieved by the following technical measures.
Preferably, the aforesaid power supply communication device based on MBus, is provided with protective circuit in wherein said MBus interface, for providing overcurrent protection and overvoltage protection for slave devices.
Preferably, the aforesaid power supply communication device based on MBus, wherein protective circuit comprises: Self-resetting fuse.
Preferably, the aforesaid power supply communication device based on MBus, wherein protective circuit comprises: TVS Transient Voltage Suppressor.
Preferably, the aforesaid power supply communication device based on MBus, wherein said first energy-storage units and the second energy-storage units comprise respectively: storage capacitor.
Preferably, the aforesaid power supply communication device based on MBus, is provided with overcharge protection circuit in wherein said high voltage charge circuit and/or low pressure charging circuit.
The present invention also provides a kind of power supply communication method based on MBUS, and the method comprises: data communication step and rectifying step, and the method also comprises: the first energizing step and/or the second energizing step; Data communication step: the sequence of voltage pulses in MBus is demodulated into transistor-transistor logic Transistor-Transistor Logic level signal and transfers to slave devices, is current pulse sequence by the Transistor-Transistor Logic level signal madulation that slave devices transmission comes and transfers to MBus; Rectifying step: the high voltage direct current signal of telecommunication non-polar MBus signal in MBus being converted to 20V-42V; First energizing step: utilize the described high voltage direct current signal of telecommunication to be the first energy-storage units constant current charge, and utilize the electric current sucked in above-mentioned modulated process to be the first energy-storage units constant current charge, the first energy-storage units is used for providing high voltage electric energy for slave devices; Second energizing step: the described high voltage direct current signal of telecommunication is converted to the low-voltage direct signal of telecommunication being no more than 5V, the described low-voltage direct signal of telecommunication is utilized to be the second energy-storage units constant current charge, and the voltage in the second energy-storage units is when reaching predetermined voltage threshold values, the second energy-storage units is allowed to provide electric energy for slave devices.
Preferably, the aforesaid power supply communication method based on MBus, wherein said first energizing step and/or the second energizing step also comprise: for the first energy-storage units and/or the second energy-storage units provide over-charge protective.
By technique scheme, power supply communication device and method based on MBus of the present invention at least has following advantages and beneficial effect: the present invention adopts high-voltage charging mode to be the first energy-storage units constant current charge by utilizing the non-polar MBus signal obtained from MBus, and be the second energy-storage units constant current charge after voltage transitions simultaneously, like this, the first energy-storage units and the second energy-storage units can be utilized to provide high voltage electric energy and the low-voltage electric energy of dimension for slave devices; In addition, when slave devices consumes larger current instantaneously, first energy-storage units and the second energy-storage units can meet this need for electricity of MBus slave devices completely moment, thus effectively prevent moment that slave devices occurs this problem of harmful effect to the data-signal of MBus transmission when consuming larger current; Final technical scheme provided by the invention improves stability and the reliability of MBus, and meets the need for electricity of multiple slave devices.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the structural representation of the power supply communication device based on MBUS of the present invention.
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to the embodiment of the power supply communication device and method based on MBus proposed according to the present invention, structure, feature and effect thereof, be described in detail as follows.
Embodiment one, power supply communication device based on MBus.
The power supply communication device based on MBus of the present embodiment was both connected with slave devices, also be connected with MBus simultaneously, that is, the power supply communication device based on MBus of the present embodiment is the interface equipment between slave devices and MBus, slave devices is after by the device of the present embodiment access MBus, and slave devices can realize power supply based on MBus and information communication.
The present embodiment based on the structure of the power supply communication device of MBUS an example as shown in Figure 1.
In Fig. 1, the power supply communication device based on MBUS of the present embodiment mainly comprises: MBus interface 100, modulation-demodulation circuit 110, rectification circuit 120, high voltage charge circuit 130, voltage conversion circuit 140, low pressure charging circuit 150, first energy-storage units 160, second energy-storage units 170, voltage threshold control circuit 180 and slave devices interface 190; Wherein, modulation-demodulation circuit 110 is connected respectively with MBus interface 100 and slave devices interface 190, rectification circuit 120 is connected respectively with MBus interface 100, high voltage charge circuit 130 and voltage conversion circuit 140, low pressure charging circuit 150 is connected respectively with voltage conversion circuit 140 and the second energy-storage units 170, first energy-storage units 160 is connected respectively with high voltage charge circuit 130 and slave devices interface 190, and voltage threshold control circuit 180 is connected respectively with the second energy-storage units 170 and slave devices interface 190.In addition, modulation-demodulation circuit 110 is also connected with high voltage charge circuit 130.
MBus interface 100 is interfaces of the device access MBus of the present embodiment, and namely the device of the present embodiment is connected with MBus by MBus interface 100.MBus interface 100 is mainly used in the signal of telecommunication (i.e. non-polar MBus signal) in MBus and sends to the data-signal of slave devices (i.e. sequence of voltage pulses) to be incorporated in the device of the present embodiment, and the data-signal (i.e. Transistor-Transistor Logic level signal) sent by the slave devices be connected with the device of the present embodiment transfers in MBus with the form of current pulse sequence.
Protective circuit can be provided with, to provide the circuit protection of at least one in overcurrent protection and overvoltage protection to the slave devices be connected with the device of the present embodiment in MBus interface 100.This protective circuit can include electric current Self-resetting fuse, to realize overcurrent protection.In addition, this protective circuit can include TVS (TRANSIENT VOLTAGE SUPPRESSOR, Transient Voltage Suppressor), to realize overvoltage protection.Protective circuit in MBus interface 100 is by providing overcurrent protection and overvoltage protection for slave devices; effectively can prevent ESD (Electro-Static discharge; Electro-static Driven Comb) interference to slave devices, be conducive to the functional reliability of rear end slave devices.
Modulation-demodulation circuit 110 sequence of voltage pulses be mainly used in the MBus provided by MBus interface 100 is demodulated into TTL (Transistor-Transistor Logic, transistor-transistor logic) level signal, and pass through slave devices interface 190 by the Transistor-Transistor Logic level Signal transmissions after demodulation to slave devices; It is current pulse sequence that modulation-demodulation circuit 110 is also mainly used in slave devices to transmit by slave devices interface 190 the Transistor-Transistor Logic level signal madulation come, and the current pulse sequence after modulation is transferred in MBus by MBus interface 100.
Modulation-demodulation circuit 110 can be made up of existing discrete device, as modulation-demodulation circuit 110 comprises voltage threshold decision circuitry (as comparator), modulation-demodulation circuit 110 utilizes this voltage threshold decision circuitry that the sequence of voltage pulses transmitted via MBus interface 100 in next MBUS is demodulated into Transistor-Transistor Logic level signal; For another example modulation-demodulation circuit 110 comprises transistor current modulation circuit, and modulation-demodulation circuit 110 utilizes transistor current modulation circuit to be current pulse sequence by transmitting the Transistor-Transistor Logic level signal madulation come via slave devices interface 190; In addition, modulation-demodulation circuit 110 can also utilize its electric current sucked in modulated process by high voltage charge circuit 130 to the first energy-storage units 160 constant current charge.
Rectification circuit 120 is mainly used in the non-polar MBus signal in MBus to be converted to the high voltage direct current signal of telecommunication.Here high pressure be the DC signal exported relative to voltage conversion circuit 140 voltage for, the voltage of the DC signal that the voltage of DC signal that namely rectification circuit 120 exports after rectification process exports after voltage transitions process higher than voltage conversion circuit 140.High pressure in the present embodiment specifically refers to the voltage being positioned at 20V-42V scope, and this voltage range comprises these two end values of 20V and 42V.The present embodiment can adopt the existing physical circuit that can realize above-mentioned rectification process.
The high voltage direct current signal of telecommunication that high voltage charge circuit 130 is mainly used in utilizing rectification circuit 120 to export is the first energy-storage units 160 constant current charge.Can overcharge protection circuit be included in this high voltage charge circuit 130, to prevent high voltage charge circuit 130 from carrying out overvoltage charging to the first energy-storage units 160, and then the slave devices of rear end can be protected.
High voltage charge circuit 130 in the present embodiment can comprise: the components and parts such as single operational amplifier, resistor network and PNP type triode, the circuit be made up of single operational amplifier and resistor network can drive PNP type triode to be that the first energy-storage units 160 carries out constant current charge.
PNP type triode in the high voltage charge circuit 130 of the present embodiment is carried out in modulated process switched at modulation-demodulation circuit 110, makes high voltage charge circuit 130 be that the first energy-storage units 160 carries out constant flow high pressure charging.In addition, the PNP type triode in high voltage charge circuit 130 also can be switched on when slave devices transmission carrys out low-potential signal, makes high voltage charge circuit 130 be that the first energy-storage units 160 carries out constant flow high pressure charging.
The high voltage direct current signal of telecommunication that voltage conversion circuit 140 is mainly used in rectification circuit 120 to export is converted to the low-voltage direct signal of telecommunication.Here low pressure is for the voltage of the DC signal of rectification circuit 120 output.Low pressure in the present embodiment specifically refers to the voltage being no more than 12V.The voltage conversion circuit of the present embodiment is when adopting the voltage conversion circuit of super low-power consumption, and when the Power convert of 24V/1mA being become the power supply of 5V/4mA, conversion efficiency can reach more than 65%.
The low-voltage direct signal of telecommunication that low pressure charging circuit 150 is mainly used in utilizing voltage conversion circuit 140 to export is that the second energy-storage units 170 carries out constant current charge.Low pressure charging circuit 150 in the present embodiment can comprise: the components and parts such as single operational amplifier, resistor network and PNP type triode, the circuit be made up of single operational amplifier and resistor network can drive PNP type triode to be that the second energy-storage units 170 carries out constant current charge.Can overcharge protection circuit be included in this low pressure charging circuit 150, to prevent low pressure charging circuit 150 from carrying out overvoltage charging to the second energy-storage units 170, and then the slave devices of rear end can be protected.
First energy-storage units 160 is mainly used in by slave devices interface 190 as slave devices provides high voltage electric energy.In the present embodiment, be the first energy-storage units 160 owing to providing the direct subject of high voltage electric energy for slave devices, instead of directly by MBus for slave devices provides high voltage electric energy, and the first energy-storage units 160 self has energy storage feature, therefore, when slave devices (as electromagnetically operated valve) occurs needing the phenomenon of larger current instantaneously, the first energy-storage units 160 can meet the big current consumption requirements of slave devices completely, thus can not produce harmful effect to the data-signal transmitted in MBus.First energy-storage units 160 can adopt the electric capacity of dimension to realize usually.
Second energy-storage units 170 is mainly used in by slave devices interface 190 as slave devices provides low-voltage electric energy.Same, in the present embodiment, for slave devices provides the direct subject of low-voltage electric energy to be the second energy-storage units 170, instead of directly by MBus for slave devices provides low-voltage electric energy.Second energy-storage units 170 can adopt the electric capacity of dimension to realize usually.
Whether voltage threshold control circuit 180 is mainly used in control second energy-storage units 170 can provide low-voltage electric energy for slave devices, concrete, voltage threshold control circuit 180 is not when the voltage monitoring the second energy-storage units 170 reaches predetermined voltage threshold values, forbid that the second energy-storage units 170 provides low-voltage electric energy for slave devices, and when the voltage monitoring the second energy-storage units 170 reaches predetermined voltage threshold values, allow the second energy-storage units 170 by slave devices interface 190 for slave devices provides low-voltage electric energy.
Device due to the present embodiment adopts low pressure charging circuit 150 to charge to the second energy-storage units 170 in constant current charge mode, therefore, when the stored energy capacitance of the second energy-storage units 170 is relatively large, the voltage rise of the second energy-storage units 170 is comparatively slow.The present embodiment, in order to ensure that slave devices can work by normal reset when MBUS powers on, thus utilizes the voltage of voltage threshold control circuit 180 to the second energy-storage units 170 to carry out voltage threshold control; Concrete, when the voltage of the second energy-storage units 170 reaches predetermined voltage threshold values, voltage threshold control circuit 180 controls the second energy-storage units 170 can provide electric energy for slave devices, enables slave devices normal reset and work; And the voltage in the second energy-storage units 170 is not when reaching predetermined voltage threshold values, voltage threshold control circuit 180 controls the second energy-storage units 170 to be forbidden for slave devices provides electric energy.It can thus be appreciated that for the 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 different along with the difference of slave devices operating state.A concrete example, under normal circumstances, second energy-storage units 170 should be the voltage that slave devices provides 3.6V, when MBus powers up startup, voltage threshold control circuit 180 is when the voltage monitoring the second energy-storage units 170 reaches 3.3V, allow the second energy-storage units 170 to provide low-voltage electric energy for slave devices, thus provide reliable voltage guarantee for the electrifying startup of slave devices; Voltage threshold control circuit 180 is not when the voltage monitoring the second energy-storage units 170 reaches 3.3V, forbid that the second energy-storage units 170 provides low-voltage electric energy for slave devices, thus slave devices is when needing to wait until that the voltage of the second energy-storage units 170 reaches 3.3V after a while, could electrifying startup.Another concrete example, second energy-storage units 170 should be the voltage that slave devices provides 3.6V usually, when slave devices is current be in normal operating conditions, voltage threshold control circuit 180 is when the voltage monitoring the second energy-storage units 170 is greater than 2.5V, the second energy-storage units 170 is allowed to provide low-voltage electric energy for slave devices, thus make slave devices continue normal work, voltage threshold control circuit 180 is when the voltage drop monitoring the second energy-storage units 170 is to below 2.5V, forbid that the second energy-storage units 170 provides low-voltage electric energy for slave devices, thus slave devices is forced closed.
Slave devices interface 190 is interfaces that slave devices accesses the power supply communication device based on MBUS of the present embodiment, and namely the device of the present embodiment is connected with slave devices by slave devices interface 190.
Slave devices interface 190 is mainly used in the low-voltage electric energy of the high voltage electric energy of the first energy-storage units 160, the second energy-storage units 170 and modulation-demodulation circuit 110 being transmitted the TTL signal come and is supplied to slave devices.The TTL Signal transmissions that slave devices interface 190 is also mainly used in slave devices to send, to modulation-demodulation circuit 110, makes modulation-demodulation circuit 110 the TTL signal from slave devices can be transferred in MBus with the form of current pulse sequence.
From the description of above-mentioned the present embodiment, the present embodiment is not needing extra to be equipped with separately power supply unit for slave devices, and only utilize MBus for slave devices electric energy is provided when, not only can realize the power consumption phenomenon that slave devices normally works and substantially can not there is harmful effect to the real time communication in MBus, but also the high voltage electric energy (as 24V/36V) of dimension can be provided for slave devices such as electromagnetically operated valves, really achieve the reliable and stable power supply of the two-wire system network of MBus and communication function.
Embodiment two, power supply communication method based on MBus.
The method of the present embodiment mainly comprises data communication step and rectifying step, and the method for the present embodiment also comprises: at least one energizing step in the first energizing step and the second energizing step.
The data communication step of the present embodiment mainly comprises: the sequence of voltage pulses in MBus is demodulated into Transistor-Transistor Logic level signal, and by the Transistor-Transistor Logic level Signal transmissions after this demodulation to slave devices; Transistor-Transistor Logic level signal madulation slave devices transmission come is current pulse sequence, and the current pulse sequence after modulation is transferred to MBus.In addition, because in modulated process, meeting is from suction electric current to realize signal madulation, therefore, the present embodiment can utilize this electric current to the first energy-storage units 160 constant current charge while modulation treatment.
Rectifying step mainly comprises: the high voltage direct current signal of telecommunication non-polar MBus signal in MBus being converted to 20V-42V.
First energizing step mainly comprises: the high voltage direct current signal of telecommunication utilizing rectifying step to obtain is that the first energy-storage units carries out constant current charge, thus makes the first energy-storage units can provide the high voltage electric energy of dimension for slave devices.The present embodiment, in the process for the first energy-storage units constant current charge, can provide over-charge protective for the first energy-storage units.The first energy-storage units in the present embodiment not only can carry out constant current charge in modulated process, also can carry out constant current charge when its voltage is lower, as when slave devices transmission carrys out low level signal, the high voltage direct current signal of telecommunication that the present embodiment utilizes rectifying step to obtain carries out constant flow high pressure charging to the first energy-storage units.
Second energizing step mainly comprises: the high voltage direct current signal of telecommunication that rectifying step obtains is converted to the low-voltage direct signal of telecommunication being no more than 5V, afterwards, utilize this low-voltage direct signal of telecommunication to be that the second energy-storage units carries out constant current charge, thus make the second energy-storage units can provide for slave devices the low-voltage electric energy reaching predetermined voltage threshold values.Concrete, when the voltage of the second energy-storage units reaches predetermined voltage threshold values, allow the second energy-storage units to provide low-voltage electric energy for slave devices, when the voltage of the second energy-storage units does not reach predetermined voltage threshold values, forbid that the second energy-storage units provides low-voltage electric energy for slave devices.The present embodiment, in the process for the second energy-storage units constant current charge, can provide over-charge protective for the second energy-storage units.
In addition, the present embodiment can also provide overcurrent protection and overvoltage protection for slave devices, effectively to prevent ESD to the interference of slave devices, is conducive to the functional reliability of rear end slave devices.
The above is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but, foregoing description is also not used to limit the present invention, any those skilled in the art are not departing within the scope of technical scheme of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (8)
1. the power supply communication device based on MBus, it is characterized in that, slave devices is connected with MBus by this device, and this device comprises: MBus interface, modulation-demodulation circuit, rectification circuit, high voltage charge circuit, voltage conversion circuit, low pressure charging circuit, the first energy-storage units, the second energy-storage units, voltage threshold control circuit and slave devices interface;
MBus interface, for being connected with MBus;
Modulation-demodulation circuit, is connected respectively with MBus interface and slave devices communication interface, for the sequence of voltage pulses in MBus being demodulated into TTL logic level signal and transferring to slave devices by slave devices interface; Be current pulse sequence by the Transistor-Transistor Logic level signal madulation that slave devices is come by the transmission of slave devices interface and transfer to MBus by MBus interface, the electric current that control high voltage charge circuit utilizes it to suck in modulated process is simultaneously the first energy-storage units constant current charge;
Rectification circuit, is connected with MBus interface, for the non-polar MBus signal in MBus being converted to the high voltage direct current signal of telecommunication of 20-42V;
High voltage charge circuit, is connected with rectification circuit, for utilize the described high voltage direct current signal of telecommunication modulation-demodulation circuit control under be the first energy-storage units constant current charge, and the first energy-storage units by slave devices interface for slave devices provides high voltage electric energy;
Voltage conversion circuit, is connected with rectification circuit, for the described high voltage direct current signal of telecommunication being converted to the low-voltage direct signal of telecommunication being no more than 5V;
Low pressure charging circuit, is connected with voltage conversion circuit, is the second energy-storage units constant current charge for utilizing the described low-voltage direct signal of telecommunication;
Voltage threshold control circuit, is connected respectively with the second energy-storage units and slave devices interface, for when the voltage of the second energy-storage units reaches predetermined voltage threshold values, allows the second energy-storage units by slave devices interface for slave devices provides low-voltage electric energy.
2. device as claimed in claim 1, is characterized in that, be provided with protective circuit in described MBus interface, for providing overcurrent protection and overvoltage protection for slave devices.
3. device as claimed in claim 2, it is characterized in that, described protective circuit comprises: Self-resetting fuse.
4. device as claimed in claim 2, it is characterized in that, described protective circuit comprises: TVS Transient Voltage Suppressor.
5. the device as described in claim arbitrary in Claims 1-4, is characterized in that, described first energy-storage units and the second energy-storage units comprise respectively: storage capacitor.
6. the device as described in claim arbitrary in Claims 1-4, is characterized in that, is provided with overcharge protection circuit in described high voltage charge circuit and/or low pressure charging circuit.
7. based on a power supply communication method of MBUS, it is characterized in that, the method comprises: data communication step and rectifying step, and the method also comprises: the first energizing step and/or the second energizing step;
Data communication step: the sequence of voltage pulses in MBus is demodulated into transistor-transistor logic Transistor-Transistor Logic level signal and transfers to slave devices, is current pulse sequence by the Transistor-Transistor Logic level signal madulation that slave devices transmission comes and transfers to MBus;
Rectifying step: the high voltage direct current signal of telecommunication non-polar MBus signal in MBus being converted to 20V-42V;
First energizing step: utilize the described high voltage direct current signal of telecommunication to be the first energy-storage units constant current charge, and utilize the electric current sucked in above-mentioned modulated process to be the first energy-storage units constant current charge, the first energy-storage units is used for providing high voltage electric energy for slave devices;
Second energizing step: the described high voltage direct current signal of telecommunication is converted to the low-voltage direct signal of telecommunication being no more than 5V, the described low-voltage direct signal of telecommunication is utilized to be the second energy-storage units constant current charge, and the voltage in the second energy-storage units is when reaching predetermined voltage threshold values, the second energy-storage units is allowed to provide electric energy for slave devices.
8. method as claimed in claim 7, it is characterized in that, described first energizing step and/or the second energizing step also comprise: for the first energy-storage units and/or the second energy-storage units provide over-charge protective.
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| CN111327114A (en) * | 2020-03-11 | 2020-06-23 | 瑞纳智能设备股份有限公司 | MBUS bus power supply system and multi-slave node load balancing method |
| CN111587611A (en) * | 2018-01-18 | 2020-08-25 | 昕诺飞控股有限公司 | Energy storage unit charged by constant current driver |
| WO2020204727A1 (en) | 2019-04-04 | 2020-10-08 | Hark Technologies As | A power adaption circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111587611A (en) * | 2018-01-18 | 2020-08-25 | 昕诺飞控股有限公司 | Energy storage unit charged by constant current driver |
| 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 |
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| EP3949076A4 (en) * | 2019-04-04 | 2023-03-15 | Hark Technologies AS | A power adaption circuit |
| CN111327114A (en) * | 2020-03-11 | 2020-06-23 | 瑞纳智能设备股份有限公司 | MBUS bus power supply system and multi-slave node load balancing method |
| 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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| CN104683118B (en) | 2017-11-14 |
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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. |