CN102984024A - Load simulating device and power over ethernet power supply port test system and method thereof - Google Patents
Load simulating device and power over ethernet power supply port test system and method thereof Download PDFInfo
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Abstract
The invention relates to ethernet power supply testing technology. The load simulating device and power over ethernet port test system and a method of the load simulating device and the power over ethernet port test system solve the problem that in the prior art the number of load circuits is large, size of the load circuit is large and safety is poor when ethernet power supply test system is tested, and the technical scheme can be summarized as: a load simulating device, channel circuits, wherein the load simulating device comprises a load circuit and a plurality of (n) channel circuits, the channel circuits comprise connectors, transformers, characteristic resistances and rectifying circuits. Each connector is connected with a transformer, a characteristic resistance and a rectifying circuit in sequence, and all channel circuits are connected with the load circuit through own rectifying circuit. The load simulating device and the power over ethernet port test system and the method of the load simulating device and the power over ethernet port port test system have the advantages of improving test efficiency and safety, and suitable for the ethernet power supply test.
Description
Technical field
The present invention relates to the Power over Ethernet measuring technology, particularly Power over Ethernet testing apparatus and method and technology.
Background technology
POE(Power Over Ethernet, Power over Ethernet) refers in the situation that existing Ethernet Cat.5 wiring architecture does not make any changes, be some IP-based too net client devices, in the time of such as transmission of data signals such as IP phone machine, wireless local network connecting point, AP web cameras, kind equipment provides the technology of direct current supply for this reason.The POE technology can when guaranteeing existing structure wiring safety, guarantee that the normal operation of existing network reduces cost to greatest extent.A complete POE system comprises feeder ear equipment (PSE, Power Sourcing Equipment) and receiving end equipment (PD, PowerDevice) two parts.PSE equipment is the equipment for the ethernet client power devices, also is the manager of whole POE Power over Ethernet process simultaneously.And PD equipment is the PSE load of accepting power supply, i.e. the client device of POE system.
When arranging in one network PSE feeder ear equipment, the POE Power over Ethernet course of work is as follows:
Detecting step, PSE equipment is exported very little voltage until it detects the receiving end equipment of supporting IEEE 802.3af standard that is connected to of cable terminations at port at the beginning.
PD end device class step, after detecting receiving end equipment PD, PSE equipment may be classified and assesses the required power loss of this PD equipment for PD equipment.
Begin the step of powering, PSE equipment begins from low-voltage to the PD power devices until the DC power supply of 48V is provided within the starting period of a configurable time (being generally less than 15s).For providing the direct current of reliable and stable 48V to satisfy PD equipment, PD equipment do not cross maximum power consumption.When if PD equipment disconnects from network, PSE rapidly (generally within 300～400ms) stops whether to connect PD equipment for PD power devices and duplicate detection process with the terminal that detects cable.
When any network equipment is connected to PSE, PSE must detect first whether PD equipment of this network equipment, avoid providing electric current to the ethernet device that does not meet the POE standard with assurance, because this may cause damage, this inspection is to provide the small voltage of a current limited to check whether far-end has satisfactory characteristic resistance and realize by PSE to stube cable, and whole 48V voltage just can be provided when only detecting this resistance.
At present POE test can be adopted true PD and simulation PD dual mode, it is maximum for the electric consumption ability that true PD generally can not reach the PSE mouth, can not satisfy the requirement of POE test maximum load, simultaneously because functional requirement is different, the actual PD price of using is far above simulation PD, so normal operation simulation PD, the load circuit of simulation PD load can design according to demand, and its load reaches the PSE maximum load capability.The method of testing of existing employing simulation PD is that each PSE port is tested.For multiport PSE equipment, test simultaneously or adopt the manual switchover mode by a plurality of simulation PD load, use single simulation PD load to test respectively a plurality of ports.
The structural representation of existing simulation PD load as shown in Figure 1, simulation PD load is comprised of a plurality of parts, wherein load circuit is the important component part of simulation PD load, for satisfying testing requirement, load meeting in the load circuit selects to consume the device near the single PSE power supply capacity upper limit, this device generally is resistance, and according to existing standard, single PSE power supply is 15.4W or 30W.This resistance volume is large, and caloric value is large, and temperature is high, the heat radiation difficulty.Existing PSE equipment is multiport PSE often, such as 8 mouthfuls, 24 mouthfuls, 48 mouthfuls.Calculate with 24 mouthfuls of every mouthful of 15.4W, its power consumption just reaches 369.6W.So many resistance, large power consumption and consequent high temperature like this, power supply, heat radiation, safety, the placement space of testing simultaneously for multiple devices bring very large challenge.If adopt the simulation PD of corresponding single PSE respectively the port of each PSE to be tested, then the POE test must partly separate test with the Ethernet that the PSE port shares, plug brings Efficiency Decreasing repeatedly, and this kind manual pulley flow operation can not be used for the isometric time test situation of high temperature ageing.
Summary of the invention
Purpose of the present invention is exactly the shortcoming that load circuit is many when overcoming present Power over Ethernet test, volume reaches greatly poor stability, and a kind of analogue loading device, Power over Ethernet test macro and method are provided.
The present invention solves its technical problem, and the technical scheme of employing is:
Analogue loading device, comprise load circuit, it is characterized in that, also comprise n channel circuit, described channel circuit comprises connector, transformer, featured resistance and rectification circuit, each connector is connected in turn with a transformer, a featured resistance and a rectification circuit, and all channel circuits are connected with load circuit by its rectification circuit
Described connector is for the Power over Ethernet POE port that connects feeder ear equipment PSE;
Described transformer is used for ethernet signal is separated with the voltage signal that the POE port of PSE provides;
Described featured resistance is used for providing the POE port of specific resistance value to PSE;
Described rectification circuit, the alternating voltage that provides for the POE port to PSE carries out rectification, uses to supply with load circuit, and the electrical isolation of realization and channel circuit.
Concrete, n is the positive integer less than or equal to the POE port number of tested PSE.
Further, the connector in channel circuit can only connect the POE port of a PSE.
Power over Ethernet port test system comprises tested multiport feeder ear equipment PSE, and described tested multiport PSE comprises a plurality of Power over Ethernet POE ports, it is characterized in that,
All POE ports of described tested multiport PSE are divided at least one POE port set, and each POE port only belongs to a POE port set;
Described test macro also comprises at least one analogue loading device as claimed in claim 1, and the channel circuit number of all analogue loading devices equates with the POE port number of tested multiport PSE; Each POE port of described tested multiport PSE is connected one by one with the connector of described at least one analogue loading device respectively,
The described same time of tested multiport PSE, test was finished until all POE ports of this POE port set power on only to electrical testing on the POE port of same POE port set.
Concrete, different analogue loading device of the corresponding connection of each described POE port set.
Further, a plurality of different analogue loading devices of the corresponding connection of each described POE port set.
The Power over Ethernet port testing method is characterized in that, may further comprise the steps:
A, all Power over Ethernet POE ports of tested multiport feeder ear equipment PSE are divided at least one POE port set, each POE port only belongs to a POE port set;
B, with the POE port in each POE port set of described tested multiport PSE, be connected one by one with the connector of analogue loading device respectively;
Only have electrical testing on the POE port in C, control each POE port set of same time, and record the POE port of the tested multiport PSE that has powered on; Test is finished until all the POE ports in this POE port set power on.
Concrete, among the described step B, with the POE port in each POE port set of described tested multiport PSE, be connected one by one with the connector of analogue loading device respectively, specifically comprise: each POE port set of tested multiport PSE is connected respectively a different analogue loading device, and all POE ports of each POE port set are connected one by one with the connector in the same analogue loading device.
Further, among the described step B, with the POE port in each POE port set of described tested multiport PSE, be connected one by one with the connector of analogue loading device respectively, specifically comprise: connect a plurality of analogue loading devices with each POE port set of tested multiport PSE is corresponding, all the POE ports in each POE port set with the connector in a plurality of analogue loading devices be connected one by one.
Concrete, among the described step C, control and only have electrical testing on the POE port in each POE port set of same time, specifically comprise: detect the voltage and current of the POE port powered on according to test request, keep load circuit in the analogue loading device that described POE port connects to power on and satisfy the stipulated time.
The invention has the beneficial effects as follows, in the present invention program, by above-mentioned analogue loading device, the POE port test system and method for realizing can multiplexing load circuit, reduces the quantity of load circuit, the whole system small volume, even and the power supply unit port detects successively one by one, do not need repeatedly to plug yet, improve testing efficiency and fail safe.
Description of drawings
Fig. 1 is the structural representation of simulation PD load in the prior art.
Fig. 2 is the structural representation of analogue loading device of the present invention.
Fig. 3 is the connection diagram of dividing into groups in the test macro of tested PSE of 48POE port of the embodiment of the invention one.
Fig. 4 is the connection diagram of dividing into groups in the test macro of tested PSE of 48POE port of further embodiment of this invention.
Fig. 5 is the connection diagram of dividing into groups in the test macro of tested PSE of 16POE port of the embodiment of the invention two.
Embodiment
Below in conjunction with embodiment and accompanying drawing, describe technical scheme of the present invention in detail.
The structural representation of analogue loading device of the present invention such as Fig. 2.Analogue loading device of the present invention, comprise a load circuit and n channel circuit, this channel circuit comprises connector, transformer, featured resistance and rectification circuit, each connector and a transformer, a featured resistance and a rectification circuit connect in turn, all channel circuits are connected with load circuit by its rectification circuit, wherein, connector is used for connecting the Power over Ethernet POE port of PSE, transformer is used for ethernet signal is separated with the voltage signal that the POE port of PSE provides, featured resistance is used for providing the POE port of specific resistance value to PSE, rectification circuit carries out rectification for the alternating voltage that the POE port to PSE provides, use to supply with load circuit, and the electrical isolation of realization and channel circuit, in general, n is the positive integer less than or equal to the POE port number of tested PSE, and the connector in channel circuit can only connect the POE port of a tested PSE.Rectification circuit in the present embodiment and load circuit those skilled in the art are easy to utilize existing techniques in realizing, and this place repeats no more.
Power over Ethernet port test of the present invention system, comprise tested multiport PSE, this tested multiport PSE comprises a plurality of Power over Ethernet POE ports, all POE ports of described tested multiport PSE are divided at least one POE port set, and each POE port only belongs to a POE port set; This test macro also comprises at least one above-mentioned analogue loading device, the channel circuit number of all analogue loading devices equates with the POE port number of tested multiport PSE, each POE port of tested multiport PSE is connected one by one with the connector of described at least one analogue loading device respectively, the described same time of tested multiport PSE, test was finished until all POE ports of this POE port set power on only to electrical testing on the POE port of same POE port set.
In the Power over Ethernet port testing method of the present invention, at first all the Power over Ethernet POE ports with tested multiport PSE are divided at least one POE port set, each POE port only belongs to a POE port set, then with the POE port in each POE port set of described tested multiport PSE, be connected one by one with the connector of analogue loading device respectively, control again and only have electrical testing on the POE port in each POE port set of same time, and the POE port of the tested multiport PSE that powered on of record, test is finished until all the POE ports in this POE port set power on.
Embodiment one
Referring to Fig. 3, the connection diagram of dividing into groups in the Power over Ethernet test macro for the tested PSE equipment of 48 ports of the embodiment of the invention.The embodiment of the invention one by side PSE equipment 48 POE ports are arranged, and be divided into 4 POE port set, each POE port set has 12 POE ports; Each POE port set connects an analogue loading device that has 12 channel circuits, so be connected with altogether 4 analogue loading devices in the present embodiment, each simulation is responsible for device and is comprised load circuit and 12 channel circuits, the channel circuit number of 4 analogue loading devices totally 48 equate with the POE port number of tested multiport PSE.At this moment, 12 POE ports of each POE port set of tested PSE connect one by one with the connector of the analogue loading device of corresponding connection respectively.The test macro of the embodiment of the invention, the same time of described tested PSE is only to electrical testing on the POE port of same POE port set, namely for current 4 POE port set, there is electrical testing on 4 POE ports the same time, and test is finished until all POE ports of this POE port set power on.Current namely corresponding analogue loading device only has a channel circuit to power on altogether because a POE port set only has a POE port to power on, and this channel circuit makes the load circuit of the passage place analogue loading device that has access to electricity.Detect the voltage and current of the POE port that has powered on according to test request, keeping load circuit in the analogue loading device that described POE port connects to power on satisfies the stipulated time, and the POE port of the tested multiport PSE that powered on of record, after the stipulated time that keeps setting, current all POE ports that power on close electricity; Control that next POE port powers in the POE port set, test is finished until all the POE ports in this POE port set power on again.In the present embodiment, can control by the grouping of POE port by the test control program of installing in the PSE equipment, and the electric sequence of the POE port in each POE port set.Also can utilize the test terminal to connect and be made by the grouping of POE port by PSE, and the electric sequence of the POE port in each POE port set.Adopt which kind of mode the present invention not limit.
Referring to Fig. 4, the connection diagram of dividing into groups in the test macro for the tested PSE of the 48POE port of further embodiment of this invention.At this moment, the PSE of 48POE port is divided into a POE port set with all POE ports.This moment, the POE port set correspondingly connected 4 analogue loading devices, and all the POE ports in the POE port set are connected one by one with connector in 4 analogue loading devices.Under this kind connected mode, the same time only has electrical testing on the POE port.So based on the analogue loading device of 12 channel circuits, preferably the 48POE port of tested PSE is divided into 4 POE port set according to the mode of Fig. 3, but this kind connected mode also can realize test purpose, just testing efficiency is not too high.
Embodiment two
Referring to Fig. 5, the connection diagram of dividing into groups in the test macro for the tested PSE of the 16POE port of the embodiment of the invention two.This tested PSE is divided into 2 POE port set, and each POE port set has 8 POE ports; Each POE port set connects an analogue loading device that has 8 channel circuits, so be connected with altogether 2 analogue loading devices in the present embodiment, each simulation is responsible for device and is comprised load circuit and 8 channel circuits, the channel circuit number of 2 analogue loading devices totally 16 equate with the POE port number of tested multiport PSE.Analogue loading device function and structure among analogue loading device in the embodiment of the invention two and the embodiment one is identical, only be that this analogue loading device comprises 8 channel circuits, and other is all identical with method of testing such as test macro, do not repeat them here.
POE port test system and method for the present invention reduces the quantity of load circuit, the whole system small volume, even and one by one the power supply unit port detect successively, do not need repeatedly to plug yet, improve testing efficiency and fail safe.
Claims (10)
1. analogue loading device, comprise load circuit, it is characterized in that, also comprise n channel circuit, described channel circuit comprises connector, transformer, featured resistance and rectification circuit, each connector is connected in turn with a transformer, a featured resistance and a rectification circuit, and all channel circuits are connected with load circuit by its rectification circuit
Described connector is for the Power over Ethernet POE port that connects feeder ear equipment PSE;
Described transformer is used for ethernet signal is separated with the voltage signal that the POE port of PSE provides;
Described featured resistance is used for providing the POE port of specific resistance value to PSE;
Described rectification circuit, the alternating voltage that provides for the POE port to PSE carries out rectification, uses to supply with load circuit, and the electrical isolation of realization and channel circuit.
2. analogue loading device as claimed in claim 1 is characterized in that, n is the positive integer less than or equal to the POE port number of tested PSE.
3. analogue loading device as claimed in claim 1 or 2 is characterized in that, the connector in channel circuit can only connect the POE port of a PSE.
4. Power over Ethernet port test system comprises tested multiport feeder ear equipment PSE, and described tested multiport PSE comprises a plurality of Power over Ethernet POE ports, it is characterized in that,
All POE ports of described tested multiport PSE are divided at least one POE port set, and each POE port only belongs to a POE port set;
Described test macro also comprises at least one analogue loading device as claimed in claim 1, and the channel circuit number of all analogue loading devices equates with the POE port number of tested multiport PSE; Each POE port of described tested multiport PSE is connected one by one with the connector of described at least one analogue loading device respectively,
The described same time of tested multiport PSE, test was finished until all POE ports of this POE port set power on only to electrical testing on the POE port of same POE port set.
5. Power over Ethernet port test as claimed in claim 4 system is characterized in that, each described POE port set is corresponding to connect a different analogue loading device.
6. Power over Ethernet port test as claimed in claim 4 system is characterized in that, each described POE port set is corresponding to connect a plurality of different analogue loading devices.
7. the Power over Ethernet port testing method is characterized in that, may further comprise the steps:
A, all Power over Ethernet POE ports of tested multiport feeder ear equipment PSE are divided at least one POE port set, each POE port only belongs to a POE port set;
B, with the POE port in each POE port set of described tested multiport PSE, be connected one by one with the connector of analogue loading device respectively;
Only have electrical testing on the POE port in C, control each POE port set of same time, and record the POE port of the tested multiport PSE that has powered on; Test is finished until all the POE ports in this POE port set power on.
8. Power over Ethernet port testing method as claimed in claim 7, it is characterized in that, among the described step B, with the POE port in each POE port set of described tested multiport PSE, be connected one by one with the connector of analogue loading device respectively, specifically comprise: each POE port set of tested multiport PSE is connected respectively a different analogue loading device, and all POE ports of each POE port set are connected one by one with the connector in the same analogue loading device.
9. Power over Ethernet port testing method as claimed in claim 7, it is characterized in that, among the described step B, with the POE port in each POE port set of described tested multiport PSE, be connected one by one with the connector of analogue loading device respectively, specifically comprise: connect a plurality of analogue loading devices with each POE port set of tested multiport PSE is corresponding, all the POE ports in each POE port set with the connector in a plurality of analogue loading devices be connected one by one.
10. such as each described Power over Ethernet port testing method of claim 7-9, among the described step C, control and only have electrical testing on the POE port in each POE port set of same time, specifically comprise: detect the voltage and current of the POE port powered on according to test request, keep load circuit in the analogue loading device that described POE port connects to power on and satisfy the stipulated time.
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| CN103592558A (en) * | 2013-08-06 | 2014-02-19 | 福建星网锐捷网络有限公司 | Method and device for detecting grounding abnormity |
| CN104422839A (en) * | 2013-09-10 | 2015-03-18 | 华为技术有限公司 | Ethernet power supply function test circuit and tool |
| CN106301802A (en) * | 2016-09-08 | 2017-01-04 | 上海申达自动防范***工程有限公司 | The vehicle management device that four mould POE power |
| CN109856489A (en) * | 2019-03-22 | 2019-06-07 | 中南大学 | A kind of load simulation device and the method for testing DC power-supply system performance |
| CN112148558A (en) * | 2020-09-15 | 2020-12-29 | 安徽师范大学 | Computer power performance test system and method |
| CN113009246A (en) * | 2019-12-20 | 2021-06-22 | 杭州海康威视数字技术股份有限公司 | PSE equipment detection device and PSE equipment detection method |
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| CN103592558B (en) * | 2013-08-06 | 2016-12-28 | 福建星网锐捷网络有限公司 | The detection method of Ethernet power receiving equipment minus earth exception and device |
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| CN109856489A (en) * | 2019-03-22 | 2019-06-07 | 中南大学 | A kind of load simulation device and the method for testing DC power-supply system performance |
| CN109856489B (en) * | 2019-03-22 | 2021-05-25 | 中南大学 | Load simulation device and method for testing performance of direct current power supply system |
| CN113009246A (en) * | 2019-12-20 | 2021-06-22 | 杭州海康威视数字技术股份有限公司 | PSE equipment detection device and PSE equipment detection method |
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