CN101667750A - Power monitoring method and power equipment - Google Patents
Power monitoring method and power equipment Download PDFInfo
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- CN101667750A CN101667750A CN200910170125A CN200910170125A CN101667750A CN 101667750 A CN101667750 A CN 101667750A CN 200910170125 A CN200910170125 A CN 200910170125A CN 200910170125 A CN200910170125 A CN 200910170125A CN 101667750 A CN101667750 A CN 101667750A
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The embodiment of the invention discloses a power monitoring method and power equipment, belonging to the communication field. The method realizes bus connection between DCDU and PMU, convenient routing, power equipment protection and 1+1 backup of control function. The power monitoring method is used in power equipment which comprises a power distribution module and a power monitoring module, wherein, the power distribution module comprises at least one energy supply module; the power monitoring method comprises the following steps: the power distribution module acquires at least one status signal of the energy supply module, sends the status signal to the power monitoring module through a bus, receives the control information returned by the power monitoring module through the bus and executes the corresponding operation of the control information. The invention can be applicable to a power system of the communication base station.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method for monitoring power supply and power-supply device.
Background technology
Along with the continuous development of communication power supply, the miniaturization of power module forward, high power development develop to miniaturization thereby promoted power-supply device.Continuous development along with new forms of energy (as solar energy, wind energy, fuel cell), the power supply of communication base station is by associating power supply solutions such as traditional civil power, oily machine, storage batterys, develop into by energy mix associating power supplies such as civil power, oily machine, storage battery, solar energy, wind energy, fuel cells, therefore, a kind of power-supply system has appearred in prior art, and it can provide energy mixs such as solar energy, wind energy, civil power, oily machine, storage battery that the solution of the energy is provided for outdoor equipments such as communication base stations.
DC distribution module in the communication power supply equipment of prior art (Direct Current DistributionUnit, hereinafter to be referred as DCDU) and Power Monitoring Unit (Power Monitor Unit, hereinafter to be referred as PMU) between the information transmission connect to realize by signal cable, as shown in Figure 1, be that equal tandem of the energy all in the system is to the DCDU interpolation frame, on the one hand, DCDU sends multiple analog quantity and switching value status signal (as: busbar voltage sampling signal, the load current sampled signal, the battery current sampled signal, the system power supply current sampling signal, multichannel blower fan current sampling signal, solar energy electric current sampled signal, two-way storage battery fuse detection signal, the load switch detection signal that breaks, lightning protection alarm signal etc.), wherein each status signal all have its independently signal cable transmit, therefore the various states signal need be sent to PMU by many barss cable; On the other hand; PMU sends pulsed quantity control signal (as: a time load power-on and power-off signal, secondary load power-on and power-off signal, battery power-on and power-off signal, multichannel blower fan control signal, system power supply control signal, solar energy control signal, busbar overvoltage/undervoltage are protected control signal etc.); need be sent to DCDU by many barss cable equally; after DCDU receives control signal; by the operation of the described control signal correspondence of the corresponding actuator of DCDU (power amplification circuit and electric component) execution, thus the scheduling controlling and the defencive function of the system of realization.
In realizing process of the present invention, the inventor finds to have following problem in the prior art at least: because the transmission capacity of the DCDU in the communication power supply equipment and status signal between the PMU and control signal is huge, need between DCDU and PMU, be connected many barss cable, cabling inconvenience and influence attractive in appearance.
Summary of the invention
Embodiment of the invention technical problem to be solved is to provide a kind of method for monitoring power supply and power-supply device, realizes that the bus of transmitting state information and control information is connected between DCDU and the PMU, and cabling makes things convenient for.
For solving the problems of the technologies described above, the embodiment of the invention adopts following technical scheme:
A kind of method for monitoring power supply is used for power-supply device, and described power-supply device comprises Power entry module and Power Monitoring Unit, and described Power entry module comprises at least one energy supply module, and described method for monitoring power supply comprises:
Described Power entry module obtains the status signal of described at least one energy supply module;
Described Power entry module sends to described Power Monitoring Unit with described status signal by bus;
Described Power entry module receives the control information of being returned by Power Monitoring Unit by bus;
Described Power entry module is carried out the operation of described control information correspondence.
A kind of power-supply device, it comprises Power entry module and the Power Monitoring Unit that is connected by bus, wherein
Described Power entry module is used to obtain the status signal of energy supply system, and described status signal is sent to Power Monitoring Unit by bus;
Described Power Monitoring Unit is used for generating control signal according to described status signal, and sends to described Power entry module by described bus;
Described DC distribution module also is used for carrying out corresponding operation according to described control signal.
Method for monitoring power supply that the embodiment of the invention provides and power-supply device; by DCDU the state information of the DCDU that gets access to is sent to PMU by bus; PMU receives the state information that is sent by DCDU by bus; generate control information and send to DCDU according to this state information by bus; DCDU will decode the control signal of at least one control executing mechanism action again from the control information that PMU receives; and the pairing action of execution control signal; realize scheduling controlling and the protection of PMU to DCDU; use the power-supply device of this method owing between DCDU and PMU, only need to connect, make that the cabling of this system is convenient by a bus; attractive in appearance.
Description of drawings
Fig. 1 is the cabling schematic diagram of prior art communication power supply equipment;
Fig. 2 is the flow chart of the embodiment of the invention one communication power supply method for supervising;
Fig. 3 is the structural representation of the embodiment of the invention one DCDU;
Fig. 4 is the structural representation of the embodiment of the invention one PMU;
Fig. 5 is the structural representation of the embodiment of the invention one communication power supply equipment;
Fig. 6 is the flow chart of the embodiment of the invention two communication power supply method for supervising;
Fig. 7 is the structural representation of the embodiment of the invention two DCDU;
Fig. 8 is the structural representation of the embodiment of the invention two PMU.
Embodiment
The embodiment of the invention provides a kind of method for monitoring power supply and power-supply device, realizes that DCDU is connected with bus between the PMU, and cabling makes things convenient for.
Be described in detail below in conjunction with the method for monitoring power supply and the power-supply device of accompanying drawing the embodiment of the invention.
Embodiment one
The embodiment of the invention provides a kind of method for monitoring power supply, is used for power-supply device, and this power-supply device comprises Power entry module and Power Monitoring Unit, and Power entry module comprises at least one energy supply module, and as shown in Figure 2, this method comprises:
Step S11, DCDU collect the status signal of each energy supply module;
Wherein, described status signal comprises: busbar voltage sampling signal, load current sampled signal, battery current sampled signal, system power supply current sampling signal, multichannel blower fan current sampling signal, solar energy electric current sampled signal, two-way storage battery fuse detection signal, the disconnected detection of load switch and lightning protection alarm signal etc.
Step S12, DCDU send to PMU with described status signal by bus;
DCDU will get access to status signal and send to PMU by bus.The host scm of PMU produces the control signal of control DCDU according to this status signal.
Wherein, in embodiments of the present invention, also needing described status signal is converted into digital information, is to obtain behind the status signal coding with the energy supply module.
Step S13, PMU generate control information according to described status signal, and by bus described control information are sent to DCDU;
Same, because described status signal is a digital information, PMU can decode described status signal earlier, what certainly can understand is, described PMU also can directly generate control signal or control information according to the coded message of described status signal, and the control information that obtains numeral could send by bus if control signal then needs to encode earlier certainly.
From this control information, decode the control signal of at least one control executing mechanism action.
Step S14, DCDU carry out the operation of described control information correspondence.
Same, described PMU is because the control information that receives is a digital information, therefore need be to the control signal of its analog quantity of generating the control executing mechanism action of decoding.
In embodiments of the present invention, the operation of described correspondence comprises allotment respectively the power on off state and the usefulness of form.
Actuator carries out the operation of control signal correspondence.
The method for monitoring power supply that the embodiment of the invention provided; by DCDU the status signal of the DCDU that gets access to is sent to PMU by bus; PMU receives the state information that is sent by DCDU by bus; generate control information and send to DCDU according to this state information by bus; DCDU carries out the pairing action of control information; realize scheduling controlling and the protection of PMU to DCDU; use the communication power supply equipment of this method owing between DCDU and PMU, only need to connect, make that the cabling of whole power-supply device inside is convenient, attractive in appearance by a bus.
The embodiment of the invention provides a kind of DCDU, and as shown in Figure 3, this DCDU comprises: obtain submodule 11, send submodule 12, receive submodule 13 and implementation sub-module 14.
Obtain submodule 11, be used to obtain the status signal of DCDU; Send submodule 12, be used for described status signal is sent to PMU by bus; Receive submodule 13, be used for receiving the control information that sends by PMU by bus; Implementation sub-module 14 is used to carry out the operation of described control information correspondence.
Understandable is owing to comprise multiple electric power system among the DCDU, therefore when sending digital information, can to send with the mode of agreement, so that PMU screens relevant information that there emerged a electric power system from information.The information that can order by appointment sends multiple electric power system such as DCDU successively, and add specific digital information code in the ending of every segment information, perhaps, DCDU also can add the identification code before every segment information when sending the information of each electric power system, certainly have a lot of additive methods can help PMU to discern various information among the DCDU in the prior art, these methods all should not constitute restriction of the invention process yet.Further, if DCDU only needs the overall status information of multiple electric power system,, also can not distinguished whole the transmission such as number of switches etc.
The DCDU that the embodiment of the invention provided; by state information that acquisition module obtains DCDU being set, this state information being sent to PMU by sending module by bus; receive the control information that PMU sends by bus by receiver module again; in Executive Module, carry out the pairing action of control information; realize scheduling controlling and the protection of PMU to DCDU; use the communication power supply equipment of this DCDU owing between DCDU and PMU, only need to connect, make that the cabling of this system is convenient, attractive in appearance by a bus.
The embodiment of the invention provides a kind of PMU, and as shown in Figure 4, this equipment comprises: receive submodule 21, generate submodule 22 and send submodule 23.
Receive submodule 21, be used for receiving the status signal that sends by DCDU by bus; Generating submodule 22 is used for generating control information according to status signal; Send submodule 23, be used for described control information is sent to described DCDU by bus.
Need to prove that the function that receives submodule 21, generation submodule 22 and transmission submodule 23 realizes in single-chip microcomputer.
The PMU that the embodiment of the invention provided; receive the status signal that submodule reception DCDU is sent by bus by being provided with; generate submodule and generate control information according to this status signal; by sending submodule control information is sent to DCDU by bus; realize scheduling controlling and the protection of PMU to DCDU; use the communication power supply equipment of this PMU owing between DCDU and PMU, only need to connect, make that the cabling of this system is convenient, attractive in appearance by a bus.
The embodiment of the invention provides a kind of power-supply device, and as shown in Figure 5, this equipment comprises: the DCDU1 and the PMU 2 that are connected by bus.Wherein, described DCDU1 is similar with PMU to previously described DCDU with the PMU2 configuration, is not given unnecessary details here.
In embodiments of the present invention, described DCDU1 is used to obtain the status signal of each electric power system that described DCDU1 manages; Described status signal is sent to PMU2 by bus; Described PMU2 is used for receiving the status signal that described DCDU1 sends by described bus; Generate control information and send to described DCDU1 according to described status signal by described bus; Described DCDU1 also is used for receiving the control information that is sent by PMU2 by bus; Carry out the operation of described control information correspondence.
In the present embodiment, above-mentioned status signal comprises: busbar voltage sampling signal, load current sampled signal, battery current sampled signal, system power supply current sampling signal, multichannel blower fan current sampling signal, solar energy electric current sampled signal, two-way storage battery fuse detection signal, the disconnected detection signal of load switch, lightning protection alarm signal etc.; Above-mentioned control signal comprises: one time load power-on and power-off signal, secondary load power-on and power-off signal, battery power-on and power-off signal, multichannel blower fan control signal, system power supply control signal, solar energy control signal, busbar overvoltage/undervoltage are protected control signal etc.; Above-mentioned bus is the communications cable of transmission of digital signals, is preferably RS485 bus cable.
The power-supply device that the embodiment of the invention provided; by DCDU the status signal of the DCDU that gets access to is sent to PMU by bus; PMU receives the status signal that is sent by DCDU by bus; generate control information and send to DCDU according to this status signal by bus; DCDU carries out the pairing action of control information again; when having guaranteed PMU to the scheduling controlling of DCDU and protection; owing between DCDU and PMU, only need to connect, make that the cabling of entire equipment inside is convenient, attractive in appearance by a bus.
Embodiment two
The embodiment of the invention provides a kind of communication power supply method for supervising, and as shown in Figure 6, this method comprises:
Step S21, DCDU obtain the switching value and the energy supply status signals of controller switching equipment;
Wherein, energy supply status signals comprises the disconnected detection signal of busbar voltage sampling signal, load current sampled signal, battery current sampled signal, system power supply current sampling signal, multichannel blower fan current sampling signal, solar energy electric current sampled signal, two-way storage battery fuse detection signal, load switch of analog quantity and the lightning protection alarm of switching value etc.
Step S22, DCDU generate the digital quantity state information with described status signal coding;
Step S23, DCDU send to PMU with described state information by bus;
DCDU sends to PMU with the digital quantity state information that generates by bus.PMU decodes to this digital quantity state information, generate the host scm that switching value and analog quantity status signal are sent to PMU, the host scm of PMU produces the control signal of control DCDU according to this status signal, and PMU is to the generation control information of encoding of this control signal, and sends to DCDU.
Step S24, DCDU receive the control information of being returned by PMU by bus;
DCDU receives the control information that is sent by bus by PMU, and this control information is generated and sent according to the state information that receives by PMU.Because the control information that receives is a digital quantity, therefore need promptly from this control information, decode the control signal of at least one control executing mechanism action to the control signal of its analog quantity of generating the control executing mechanism action of decoding.
Step S251, DCDU decode the control signal of at least one control executing mechanism action, execution in step S26 from described control information;
Because the control information that receives is a digital quantity, therefore need be to the control signal of its analog quantity of generating the control executing mechanism action of decoding;
Step S252, when not receiving control information, DCDU generates the control signal of at least one control executing mechanism action;
When PMU breaks down, or bus is when breaking down, and DCDU will not receive control information, and this moment, DCDU can start the internal control defencive function, directly generates control signal DCDU is controlled, and played the effect of " 1+1 backup " of protection and controlled function.
Step S26, DCDU carry out the operation of described control signal correspondence;
Actuator carries out the operation of control signal correspondence.
The communication power supply method for supervising that the embodiment of the invention provided, by DCDU the state information of the DCDU that gets access to is sent to PMU by bus, PMU receives the state information that is sent by DCDU by bus, generate control information and send to DCDU according to this state information by bus, DCDU will decode the control signal of at least one control executing mechanism action again from the control information that PMU receives, and the pairing action of execution control signal, realize scheduling controlling and the protection of PMU to DCDU, use the communication power supply equipment of this method owing between DCDU and PMU, only need to connect, make that the cabling of device interior is convenient by a bus, attractive in appearance; And; when the PMU fault, DCDU can generate the control signal of control executing mechanism action, is equivalent to the defence line that DCDU has increased a pipe protection and controlled function; thereby realized the protection of communication power supply equipment and " 1+1 backup " of controlled function, improved the reliability of whole system.
The embodiment of the invention provides a kind of DCDU, and as shown in Figure 7, this equipment comprises: obtain submodule 11, send submodule 12, receive submodule 13, implementation sub-module 14, encoding and decoding submodule 15 and standby submodule 16.
Obtain the state information that submodule 11 is used to obtain DCDU; Sending submodule 12 is used for described state information is sent to PMU by bus; Receiving submodule 13 is used for receiving the control information that is sent by PMU by bus; Encoding and decoding submodule 15 is used for the control signal that state information is encoded into digital signal or decodes at least one control executing mechanism action from described control information, certainly, understandablely be, if the status signal of collecting has been a digital signal, does not then need to encode and can directly send; Implementation sub-module 14 is used to carry out the operation of described control signal correspondence; Standby submodule 16 is used for when the receiver module of described DCDU does not receive control information, then generate the spare control signal of at least one control executing mechanism action, certain described spare control signal is a kind of emergency signal, it only is not have under the situation of control signal, is used to instruct DCDU to carry out distribution operation.
Need to prove, the function of obtaining submodule 11, transmission submodule 12, reception submodule 13, encoding and decoding submodule 15 and standby submodule 16 realizes in single-chip microcomputer, function with these modules of chip microcontroller, on the system integration to a chip, have that volume is little, an advantage such as light weight, application and exploitation facility.The function of implementation sub-module 15 is realized by power amplification circuit and electric component.
The DCDU that the embodiment of the invention provided, by the status signal that acquisition module obtains DCDU is set, utilize encoding and decoding submodule coding back to send to PMU by bus this status signal by sending submodule, receive the control information that PMU sends by bus by receiving submodule again, utilize the encoding and decoding submodule to decode the control signal of at least one control executing mechanism action at last, in implementation sub-module, carry out the pairing action of control signal, realize scheduling controlling and the protection of PMU to DCDU, use the communication power supply equipment of this DCDU owing between DCDU and PMU, only need to connect, make that the cabling of this system is convenient by a bus, attractive in appearance; And; when the PMU fault; the standby submodule of DCDU can generate the control signal of control executing mechanism action; being equivalent to DCDU has increased the defence line of a pipe protection and controlled function; thereby realized the protection of communication power supply equipment and " 1+1 backup " of controlled function, improved the reliability of whole system.
Need to prove, except the power-supply system that communication equipment needs, technical scheme of the present invention also can be used for other power-supply devices, no matter be indoor type or outdoor type power-supply system, or embedded power-supply system, particularly require power-supply system when theory designing requirements such as miniaturization, function modoularization, preceding operation, preceding maintenance, preceding wiring, energy undercarriage, easily dilatation, high reliability, all can adopt technical scheme of the present invention.
Understandablely be, the Power entry module in the embodiment of the invention is the DC distribution module, and in fact the present invention also can be applicable in the power-supply device of other form, such as interchange.
The embodiment of the invention provides a kind of PMU, and as shown in Figure 8, this equipment comprises: receive submodule 21, generate submodule 22, send submodule 23 and encoding and decoding submodule 24.
Receive submodule 21, be used for receiving the status signal that sends by DCDU by bus; Generating submodule 22 is used for generating control information according to status signal; Send submodule 23, be used for described control information is sent to described DCDU by bus; The digital information that encoding and decoding submodule 24 is used for coming from bus transfer is decoded into readable signal, perhaps control information is encoded into digital information.
Need to prove that the function that receives submodule 21, generation submodule 22, transmission submodule 23 and encoding and decoding submodule 24 realizes in single-chip microcomputer.
The PMU that the embodiment of the invention provided; by being set, monitoring receives the status signal that submodule reception DCDU is sent by bus; generate submodule and generate control information according to this status signal; by sending submodule control information is sent to DCDU by bus; and utilize the encoding and decoding submodule to be used for being decoded into readable signal from the digital information that bus transfer is come; perhaps control information is encoded into digital information; realize scheduling controlling and the protection of PMU to DCDU; use the communication power supply equipment of this PMU owing between DCDU and PMU, only need to connect, make that the cabling of this system is convenient by a bus; attractive in appearance.
Those of ordinary skills can recognize, the unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software clearly is described, the composition and the step of each example described prevailingly according to function in the above description.These functions still are that software mode is carried out with hardware actually, depend on the application-specific and the design constraint of technical scheme.The professional and technical personnel can use distinct methods to realize described function to each specific should being used for, but this realization should not thought and exceeds scope of the present invention.
The method of describing in conjunction with embodiment disclosed herein or the step of algorithm can use the software module of hardware, processor execution, and perhaps the combination of the two is implemented.Software module can place the storage medium of any other form known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or the technical field.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (10)
1, a kind of method for monitoring power supply is used for power-supply device, and described power-supply device comprises Power entry module and Power Monitoring Unit, and described Power entry module comprises at least one energy supply module, it is characterized in that, described method for monitoring power supply comprises:
Described Power entry module obtains the status signal of described at least one energy supply module;
Described Power entry module sends to described Power Monitoring Unit with described status signal by bus;
Described Power entry module receives the control information of being returned by Power Monitoring Unit by bus;
Described Power entry module is carried out the operation of described control information correspondence.
2, method for monitoring power supply according to claim 1 is characterized in that, described control information is a digital information, and described Power entry module receives the control information of being returned by Power Monitoring Unit by bus and comprises:
Described control information is decoded into readable control signal.
3, method for monitoring power supply according to claim 1 is characterized in that, also comprises:
When not receiving control information, generate the control signal of at least one control executing mechanism action;
Carry out the operation of described control signal correspondence.
4, method for monitoring power supply according to claim 1; it is characterized in that described control information comprises: the information of load power-on and power-off signal, secondary load power-on and power-off signal, battery power-on and power-off signal, multichannel blower fan control signal, system power supply control signal, solar energy control signal and a busbar overvoltage/undervoltage protection control signal.
5, method for monitoring power supply according to claim 1 is characterized in that, the status signal that described Power entry module obtains described at least one energy supply module comprises:
Obtain the switching value signal and the energy supply status signals of Power entry module controller switching equipment.
6, method for monitoring power supply according to claim 5, it is characterized in that described energy supply status signals comprises: busbar voltage sampling signal, load current sampled signal, battery current sampled signal, system power supply current sampling signal, multichannel blower fan current sampling signal, solar energy electric current sampled signal, storage battery fuse detection signal, the disconnected detection signal of load switch and lightning protection alarm signal.
7, a kind of power-supply device is characterized in that, it comprises Power entry module and the Power Monitoring Unit that is connected by bus, wherein
Described Power entry module is used to obtain the status signal of energy supply system, and described status signal is sent to Power Monitoring Unit by bus;
Described Power Monitoring Unit is used for generating control signal according to described status signal, and sends to described Power entry module by described bus;
Described DC distribution module also is used for carrying out corresponding operation according to described control signal.
8, power-supply device according to claim 7 is characterized in that, described Power entry module also comprises the encoding and decoding submodule, is used for status signal is encoded into digital information, perhaps will become readable signal from the information decoding that bus transmits.
9, power-supply device according to claim 7 is characterized in that, described Power Monitoring Unit also comprises the encoding and decoding submodule, and the digital information that is used for coming from bus transfer is decoded into readable signal, perhaps described control signal is encoded into digital information.
10, power-supply device according to claim 7, it is characterized in that, described Power entry module also comprises spare module, when described Power entry module do not receive within the predetermined time that bus transmits comprise the information of described control signal the time, described spare module is that described Power entry module generates spare control signal, to carry out the foundation of distribution operation as Power entry module.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103269127A (en) * | 2013-05-15 | 2013-08-28 | 奇瑞汽车股份有限公司 | Remote monitoring system and remote monitoring method of communication base station power supply |
WO2014063522A1 (en) * | 2012-10-25 | 2014-05-01 | 中兴通讯股份有限公司 | Base station and power consumption detection method |
CN106294495A (en) * | 2015-06-09 | 2017-01-04 | 冠捷投资有限公司 | The program module of quick-searching service manual |
CN108061867A (en) * | 2017-12-29 | 2018-05-22 | 武汉祺誉星科技有限公司 | Debugging and testing method of combined power supply monitoring unit |
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2009
- 2009-09-03 CN CN200910170125A patent/CN101667750A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2014063522A1 (en) * | 2012-10-25 | 2014-05-01 | 中兴通讯股份有限公司 | Base station and power consumption detection method |
CN103781113A (en) * | 2012-10-25 | 2014-05-07 | 中兴通讯股份有限公司 | Base station and power consumption detection method thereof |
CN103781113B (en) * | 2012-10-25 | 2018-09-07 | 中兴通讯股份有限公司 | Base station and its consumption detection method |
CN103269127A (en) * | 2013-05-15 | 2013-08-28 | 奇瑞汽车股份有限公司 | Remote monitoring system and remote monitoring method of communication base station power supply |
CN103269127B (en) * | 2013-05-15 | 2015-06-10 | 奇瑞汽车股份有限公司 | Remote monitoring system and remote monitoring method of communication base station power supply |
CN106294495A (en) * | 2015-06-09 | 2017-01-04 | 冠捷投资有限公司 | The program module of quick-searching service manual |
CN108061867A (en) * | 2017-12-29 | 2018-05-22 | 武汉祺誉星科技有限公司 | Debugging and testing method of combined power supply monitoring unit |
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Application publication date: 20100310 |