CN103944739A - Intelligent POE power source supplying system and efficient POE power source managing method thereof - Google Patents
Intelligent POE power source supplying system and efficient POE power source managing method thereof Download PDFInfo
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Abstract
An intelligent POE power source supplying system comprises a PSE device and a plurality of PD devices. The PSE device comprises a POE power module, a POE control unit, a micro-control unit, a power supplying pre-processing unit and a power supplying arbiter. The POE power module is connected with the power supplying pre-processing unit. The output end of the power supplying pre-processing unit is respectively connected with the input end of the POE control unit and the input end of the power supplying arbiter. The output end of the power supplying arbiter is connected with a main control unit which is connected with the POE control unit. The output end of the POE control unit is provided with a plurality of power supplying ports connected with the PD devices. According to the intelligent POE power source supplying system, the product cost is effectively reduced, one low-end POE chip is enough in the technical scheme, and it is enough that the chip has the basic detecting and power supplying functions. The power utilizing rate of the system is high, and when the system power supplying is not enough, the number of the power supplying ports of the system is maximal, and the power output is maximal.
Description
Technical field
The present invention relates to network communications technology field, especially relate to intelligent POE electric supply system and efficient POE method for managing power supply thereof.
Background technology
POE(Power on Ethernet, Power over Ethernet) refer in the situation that existing Ethernet category 5 twisted pair wiring architecture does not make any changes, when being some network-termination device transmission of data signals, kind equipment provides the technology of direct current supply for this reason.POE technology can guarantee the normal operation of existing network in safe guaranteeing that existing structure connects up, a complete POE system comprises feeder ear equipment (PSE, Power Sourcing Equipment) and receiving end equipment (PD, Power Device) two parts.PSE equipment is the equipment for the power supply of ethernet client equipment, is also the manager of whole POE Power over Ethernet process simultaneously.And PD equipment is the PSE load of accepting power supply, and the client device of POE system, as IP phone, network security video camera, and many other ethernet devices such as palmtop PC (PDA) or charger for mobile phone.
A complete POE system comprises: PSE equipment and a plurality of PD equipment, PSE equipment further comprises POE power module, main control unit, POE control unit and Ethernet interface (as shown in Figure 1).In POE electric power system, power management is not done to unified regulation at present.Main technical scheme is MCU+POE chip, and whether externally MCU controls POE chip power output by I2C/SPI.The power supply management of PSE system, priority management, power management etc. are all completed by POE chip hardware, and the work that software participates in is less.In analysis prior art scheme, there is following problem:
1), product cost is high: because POE chip will be born most of work, so corresponding price of function of the every increase of POE also can significantly increase.These functions mainly comprise power supply management, priority management, power management etc.Each function can allow about chip price rise 10-20%.
2), power utilization is low: power utilization is mainly determined by two large factors, power supply port number and power output size.In the power management techniques scheme of existing support priority competition, when system spare power does not meet new access higher priority devices power needs, meeting order/disconnect at random low priority power supply unit, then power to access device.Thereby cause following problem: a, when low priority port power summation is lower than access device power requirement, there will be low priority port all to be disconnected, and the situation that access device can not be powered causes for electrical derangement, power utilization reduces.In b, low priority port, a certain high flow rate power port is not disconnected, and other a plurality of low consumpting power ports are disconnected, and can cause power utilization to decline yet.
Summary of the invention
The present invention is in order to solve the problems of the technologies described above, and the intelligent POE electric supply system that a kind of low cost, high efficiency, autgmentability are strong is provided and supports the efficient POE method for managing power supply of preferential competition.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: intelligent POE electric supply system, comprise PSE equipment and a plurality of PD equipment, wherein PSE equipment is by POE power module, POE control unit, micro-control unit, power supply pretreatment unit, power supply moderator; Described POE power module is connected with power supply pretreatment unit, and the output of this power supply pretreatment unit is connected with the input of power supply moderator with POE control unit respectively; The output of described power supply moderator is connected with main control unit, and this main control unit is connected with POE control unit; The output of described POE control unit is provided with a plurality of power supply ports, wherein power port and PD equipment connection.
An efficient POE method for managing power supply, adopts the power supply pretreatment unit of described intelligent POE electric supply system and the moderator of powering, the operation principle of the pretreatment unit of wherein powering:
1), power supply pretreatment unit is inquired about power supply port by training in rotation mode whether PD equipment access request power supply, if having PD equipment access request power supply to enter next step;
2), by reading corresponding power supply port hardware information, obtain the class rank of access PD equipment;
3), according to class level calculation access device required power size (P
r), calculating standard is: Class0/3=15.4W, Class1=4W, Class2=7W, Class4=30W;
4), computing system dump power Pa, computing formula is:
(P
max: system is supported maximum gross power Viee: the current port voltage of port i, Ii: the current port current of port i);
5) if system spare power (P
a) be greater than equipment required power (P
r), power supply pretreatment unit starts to power for equipment by POE control unit, if system spare power (P
a) be less than equipment required power (P
r) port of powering enter power supply moderator carry out arbitration process.
As preferably, described intelligent POE electric supply system is according to power supply port priority (Lp), system spare power (P
a), available horsepower (P
t), interface equipment required power (P
r) the information arbitration of powering, this power supply moderator operation principle is as follows:
1), power supply moderator obtains power supply port current priority, the priority level of preserving by power supply port priority software, is recorded as (Lp);
2), all priority, lower than the power supply port of (Lp), is preserved the actual power consumption of power supply port in inquiry system;
3), by power supply port list in above-mentioned steps (2) according to actual power consumption according to sorting from big to small;
4), the power list after step (3) sequence is deposited in energy box, and be numbered successively (0-n);
5), get energy: from energy box, get energy, operation principle is as follows:
(I) as energy box be empty, the failure of power supply ports competition, abandons, into port power supply, directly jumping to step (9) processing and finishing, and as energy box has energy, jumps to next step;
(II) first gets the port that energy box medium priority is minimum, All factors being equal, preference will be give to level in get actual power consumption the maximum, owing to sorting according to watt level in step (3), thus All factors being equal, preference will be give to level in get numbering smaller.Recording power is P
j, record port numbers iPort;
(III) calculates available horsepower Pt, and computing formula is as follows:
(P
a: system is supported maximum gross power P
j: the performance number of numbering j in energy box);
6), the available horsepower (P in judgement above-mentioned steps (III)
t) whether be more than or equal to port access device required power (P
r), if available horsepower (P
t) be more than or equal to interface equipment required power (P
r) directly enter next step (7), if available horsepower (P
t) be less than interface equipment required power (P
r) return to above-mentioned steps (5) and continue to process;
7), ports competition success, disconnect successively all power supply ports of record in above-mentioned steps (5), release port takies power;
8), start as the power supply of access power supply port PD equipment, power output;
9), processing finishes.
As preferably, described power supply moderator is in arbitrated procedure, and in step (4) energy box, actual power sortord is unrestricted.
As preferably, described power supply moderator is in arbitrated procedure, and the power down sequence in step (5), first disconnects priority minimum, and level that All factors being equal, preference will be give to is selected to disconnect a consumed power and approached demand power most, i.e. interface equipment required power (P
r) and available horsepower (P
t) poor.
The present invention effectively reduces product cost, and the technical program only need to be used a low side POE chip, and chip has basic detection, function of supplying power; System power utilance is high, when occurring that system power supply is not enough, guarantees that system power supply port number maximizes, power stage maximizes.By system spare power is carried out to Pre-Evaluation, first all priority is put into energy box lower than the power supply port power of access device priority, if power is inadequate in energy box, abandon access device power supply, thereby guarantee power supply port number.By power supply moderator, system available horsepower is carried out to Pre-Evaluation simultaneously, assess and unsuccessfully abandon access device power supply, and do not disconnect low priority power supply port; Assess successfully and according to pre-defined algorithm order, disconnect consumed power the maximum in low priority.The port number that can guarantee like this to power maximizes, power stage maximizes, and improves system power utilance.
Accompanying drawing explanation
Fig. 1 is traditional POE electric power system structured flowchart.
Fig. 2 is structured flowchart of the present invention.
Fig. 3 is the flow chart of the efficient POE method for managing power supply of the present invention.
Fig. 4 is that the present invention's port of powering is arbitrated successful schematic diagram.
Fig. 5 is that the present invention's port of powering is arbitrated failed schematic diagram.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.
Fig. 2 is structured flowchart of the present invention.As shown in Figure 2, intelligent POE electric supply system, is mainly comprised of PSE equipment and a plurality of PD equipment etc., and wherein PSE equipment is by POE power module, POE control unit, micro-control unit, power supply pretreatment unit, power supply moderator; Described POE power module is connected with power supply pretreatment unit, and the output of this power supply pretreatment unit is connected with the input of power supply moderator with POE control unit respectively; The output of described power supply moderator is connected with main control unit, and this main control unit is connected with POE control unit; The output of described POE control unit is provided with a plurality of power supply ports, wherein power port and PD equipment connection.
Fig. 3 is the flow chart of the efficient POE method for managing power supply of the present invention.As shown in Figure 3, efficient POE method for managing power supply is mainly to adopt power supply pretreatment unit and power supply moderator matching management, the operation principle of the pretreatment unit of wherein powering:
1), power supply pretreatment unit is inquired about power supply port by training in rotation mode whether PD equipment access request power supply, if having PD equipment access request power supply to enter next step;
2), by reading corresponding power supply port hardware information, obtain the class rank of access PD equipment;
3), according to class level calculation access device required power size (P
r), calculating standard is: Class0/3=15.4W, Class1=4W, Class2=7W, Class4=30W;
4), computing system dump power P
a, computing formula is:
(P
max: system is supported maximum gross power Viee: the current port voltage of port i, Ii: the current port current of port i);
5) if system spare power (P
a) be greater than equipment required power (P
r), power supply pretreatment unit starts to power for equipment by POE control unit, if system spare power (P
a) be less than equipment required power (P
r) port of powering enter power supply moderator carry out arbitration process.
In above-mentioned steps (5) if in system spare power (P
a) when not enough, power supply port enters power supply arbitration unit.Intelligence POE electric supply system is according to power supply port priority (Lp), system spare power (P
a), available horsepower (P
t), interface equipment required power (P
r) the information arbitration of powering, power supply moderator operation principle is as follows:
1), power supply moderator obtains power supply port current priority, the priority level of preserving by power supply port priority software, is recorded as (Lp);
2), all priority, lower than the power supply port of (Lp), is preserved the actual power consumption of power supply port in inquiry system;
3), by power supply port list in above-mentioned steps (2) according to actual power consumption according to sorting from big to small;
4), the power list after step (3) sequence is deposited in energy box, and be numbered successively (0-n);
5), get energy: from energy box, get energy, operation principle is as follows:
(I) as energy box be empty, the failure of power supply ports competition, abandons, into port power supply, directly jumping to step (9) processing and finishing, and as energy box has energy, jumps to next step;
(II) first gets the port that energy box medium priority is minimum, All factors being equal, preference will be give to level in get actual power consumption the maximum, owing to sorting according to watt level in step (3), thus All factors being equal, preference will be give to level in get numbering smaller.Recording power is P
j, record port numbers iPort;
(III) calculates available horsepower P
t, computing formula is as follows:
(P
a: system is supported maximum gross power P
j: the performance number of numbering j in energy box);
6), the available horsepower (P in judgement above-mentioned steps (III)
t) whether be more than or equal to port access device required power (P
r), if available horsepower (P
t) be more than or equal to interface equipment required power (P
r) directly enter next step (7) (as shown in Figure 4), if available horsepower (P
t) be less than interface equipment required power (P
r) return to above-mentioned steps (5) and continue to process (as shown in Figure 5);
7), ports competition success, disconnect successively all power supply ports of record in above-mentioned steps (5), release port takies power;
8), start as the power supply of access power supply port PD equipment, power output;
9), processing finishes.
Power supply moderator is in arbitrated procedure, and in step (4) energy box, actual power sortord is unrestricted, can be multiple sequence; Power moderator in arbitrated procedure, the power down sequence in step (5), level that All factors being equal, preference will be give to is selected to disconnect a consumed power and is approached demand power most, i.e. interface equipment required power (P
r) and available horsepower (P
t) poor.
The present invention effectively reduces product cost, and the technical program only need to be used a low side POE chip, and chip has basic detection, function of supplying power; System power utilance is high, when occurring that system power supply is not enough, guarantees that system power supply port number maximizes, power stage maximizes.By system spare power is carried out to Pre-Evaluation, first all priority is put into energy box lower than the power supply port power of access device priority, if power is inadequate in energy box, abandon access device power supply, thereby guarantee power supply port number.The port number that can guarantee like this to power maximizes, power stage maximizes, and improves system power utilance.
Above to intelligent POE electric supply system provided by the present invention, with efficient POE method for managing power supply, be described in detail, in the present invention, applied specific case the application's principle and execution mode are set forth, the explanation of above embodiment is just for helping to understand the application's method and core concept thereof; Meanwhile, for one of ordinary skill in the art, the thought according to the application, all will change in specific embodiments and applications, and in sum, this description should not be construed as the restriction to the application.
Claims (4)
1. intelligent POE electric supply system, comprises PSE equipment and a plurality of PD equipment, and wherein PSE equipment is by POE power module, POE control unit, micro-control unit, power supply pretreatment unit, power supply moderator; Its spy this be, described POE power module is connected with power supply pretreatment unit, and the output of this power supply pretreatment unit is connected with the input of power supply moderator with POE control unit respectively; The output of described power supply moderator is connected with main control unit, and this main control unit is connected with POE control unit; The output of described POE control unit is provided with a plurality of power supply ports, wherein power port and PD equipment connection.
2. efficient POE method for managing power supply, adopts power supply pretreatment unit and the power supply moderator of described intelligent POE electric supply system, the operation principle of the pretreatment unit of wherein powering:
1), power supply pretreatment unit is inquired about power supply port by training in rotation mode whether PD equipment access request power supply, if having PD equipment access request power supply to enter next step;
2), by reading corresponding power supply port hardware information, obtain the class rank of access PD equipment;
3), according to class level calculation access device required power size (P
r), calculating standard is: Class0/3=15.4W, Class1=4W, Class2=7W, Class4=30W;
4), computing system dump power P
a, computing formula is:
system is supported maximum gross power Viee: the current port voltage of port i, Ii: the current port current of port i);
5) if system spare power (P
a) be greater than equipment required power (P
r), power supply pretreatment unit starts to power for equipment by POE control unit, if system spare power (P
a) be less than equipment required power (P
r) port of powering enter power supply moderator carry out arbitration process.
3. efficient POE method for managing power supply according to claim 2, is characterized in that, described intelligent POE electric supply system is according to power supply port priority (Lp), system spare power (P
a), available horsepower (P
t), interface equipment required power (P
r) the information arbitration of powering, this power supply moderator operation principle is as follows:
1), power supply moderator obtains power supply port current priority, the priority level of preserving by power supply port priority software, is recorded as (Lp);
2), all priority, lower than the power supply port of (Lp), is preserved the actual power consumption of power supply port in inquiry system;
3), by power supply port list in above-mentioned steps (2) according to actual power consumption according to sorting from big to small;
4), the power list after step (3) sequence is deposited in energy box, and be numbered successively (0-n);
5), get energy: from energy box, get energy, operation principle is as follows:
(I) as energy box be empty, the failure of power supply ports competition, abandons, into port power supply, directly jumping to step (9) processing and finishing, and as energy box has energy, jumps to next step;
(II) first gets the port that energy box medium priority is minimum, All factors being equal, preference will be give to level in get actual power consumption the maximum, owing to sorting according to watt level in step (3), thus All factors being equal, preference will be give to level in get numbering smaller.Recording power is P
j, record port numbers iPort;
(III) calculates available horsepower P
t, computing formula is as follows:
(P
a: system is supported maximum gross power P
j: the performance number of numbering j in energy box);
6), the available horsepower (P in judgement above-mentioned steps (III)
t) whether be more than or equal to port access device required power (P
r), if available horsepower (P
t) be more than or equal to interface equipment required power (P
r) directly enter next step (7), if available horsepower (P
t) be less than interface equipment required power (P
r) return to above-mentioned steps (5) and continue to process;
7), ports competition success, disconnect successively all power supply ports of record in above-mentioned steps (5), release port takies power;
8), start as the power supply of access power supply port PD equipment, power output;
9), processing finishes.
4. efficient POE method for managing power supply according to claim 2, it is characterized in that, described power supply moderator is in arbitrated procedure, power down sequence in step (5), first disconnect priority minimum, level that All factors being equal, preference will be give to is selected to disconnect consumed power and is approached demand power most, i.e. interface equipment required power (P
r) and available horsepower (P
t) poor.
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| CN201410116303.XA CN103944739B (en) | 2014-03-26 | 2014-03-26 | Intelligent POE electric supply systems and its efficient POE method for managing power supply |
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