CN101887091B - Device and method for testing Ethernet power supply equipment - Google Patents
Device and method for testing Ethernet power supply equipment Download PDFInfo
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- CN101887091B CN101887091B CN2010101591496A CN201010159149A CN101887091B CN 101887091 B CN101887091 B CN 101887091B CN 2010101591496 A CN2010101591496 A CN 2010101591496A CN 201010159149 A CN201010159149 A CN 201010159149A CN 101887091 B CN101887091 B CN 101887091B
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Abstract
The invention provides a device and a method for testing Ethernet power supply equipment. The device comprises a device body and an external power load, wherein the external power load is connected with a power convergence bus; a PD controller and a current adjusting circuit are arranged in the device body; the PD controller is connected on the power convergence bus through a branch transmission line; and the current adjusting circuit is arranged on the branch transmission line. The PD controller and the external power load are arranged separately so as to avoid the baking action of the external power load on the PD controller and improve the reliability of the test equipment; and in addition, the external power load can be replaced at any time, so the device is convenient for equipment maintenance, is also convenient for replacing different external power loads according to different testing requirements during testing, and improves the testing flexibility.
Description
Technical field
The present invention relates to POE testing of equipment technical field, relate in particular to a kind of POE equipment testing device and method.
Background technology
POE (Power over Ethernet; Be called for short: PoE) technology is a kind of by POE equipment (Power Source Equipment; Be called for short: PSE) (Powered Device is called for short: the PD) technology of power supply to long-range Ethernet power receiving equipment via Ethernet cable.In order to assess the power supply capacity of PSE, need test PSE, existing method of testing is following:
Use the port performance of special-purpose POE equipment testing device test PSE.As shown in Figure 1, be provided with the PD controller in the POE equipment testing device, will separate into independent power supply signal and data-signal from the mixed signal that comprises data-signal and power supply signal that the port transmission of PSE is come; Data-signal sends through corresponding ports, carries out the test of corresponding data transmission performance; Power supply signal is consumed through the built-in power termination with known nominal load value, and after this, based on above-mentioned power termination with known nominal load value, the survey instrument that is carried by PSE is measured the power supply capacity of corresponding port.
But, there is following problem in the prior art:
The energy of power supply signal can be converted into heat after being consumed in the power termination, be difficult to do very highly for enough heat-dissipating spaces, the integrated level of proving installation are provided to power termination, and is therefore bulky.And the heating of power termination can be toasted the PD controller for a long time under the situation of long-term test, therefore can reduce the reliability and the accuracy of test.When the PSE to multiport tests, as shown in Figure 2, need in the existing proving installation many cover PD controllers and power termination to be set to each port, total thermal value then can be higher.
Summary of the invention
It is a kind of to having POE (Power over Ethernet that the present invention provides; Be called for short: PoE) the POE equipment testing device and the method for the POE testing equipment of function, with the influence of the thermal value that overcomes power termination to test process.
One embodiment of the invention provides a kind of POE equipment testing device; Comprising: device body and external power termination; Be connected with power in the said external power termination and compile bus, be provided with PD controller and matrix current adjustment circuit in the said device body, wherein:
Said PD controller is connected in said power through the branch road transmission line and compiles on the bus, is used for isolating power supply signal from the mixed signal that comes from PSE port to be measured and sends to said branch road transmission line;
Said matrix current adjustment circuit is arranged on the said branch road transmission line, is used for the electric current that said power supply signal produces on said branch road transmission line is adjusted into preset rated current.
Another embodiment of the present invention provides a kind of POE apparatus testing method based on above-mentioned POE equipment testing device, comprising:
The device body of said POE equipment testing device receives the mixed signal that comes from POE equipment PSE port to be measured;
Ethernet powered device PD controller in the said device body is isolated power supply signal and is sent on the branch road transmission line from said mixed signal;
The matrix current adjustment circuit that is positioned on the said branch road transmission line is adjusted into preset rated current with the electric current that said power supply signal produces on said branch road transmission line;
The power of said rated current in said POE equipment testing device compiles bus transfer to external power termination, and by said external power termination consumption.
The present invention separates setting with the PD controller with external power termination, has avoided the baking effect of external power termination to the PD controller, has improved the reliability of testing apparatus; In addition, external power termination can also be changed at any time, therefore, is convenient to plant maintenance, and also is convenient in test process, change different external power terminations according to different testing requirements, has improved the dirigibility of test.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of existing POE equipment testing device;
Fig. 2 is the another kind of structural representation of existing POE equipment testing device;
Fig. 3 is the structural representation of POE equipment testing device embodiment one according to the invention;
Fig. 4 is the process flow diagram based on the POE apparatus testing method embodiment one of device shown in Figure 3;
Fig. 5 is the structural representation of POE equipment testing device embodiment two according to the invention;
Fig. 6 is the process flow diagram based on the POE apparatus testing method embodiment two of device shown in Figure 3;
Structural representation when Fig. 7 carries out the environmental suitability experiment for adopting existing POE equipment testing device;
Structural representation when Fig. 8 carries out the environmental suitability experiment for adopting POE equipment testing device according to the invention;
Fig. 9 is a kind of optional structural representation of constant-current source circuit according to the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Fig. 3 is the structural representation of POE equipment testing device embodiment one according to the invention; As shown in the figure; This POE equipment testing device 10 comprises: a device body 20 and an external power termination 30; Be connected with power in the said external power termination 30 and compile bus 40, be provided with PD controller 21 and matrix current adjustment circuit 22 in the said device body 20, wherein:
Said PD controller 21 is connected in said power through branch road transmission line 23 and compiles on the bus 40, is used for isolating power supply signal from the mixed signal that comes from PSE port to be measured and sends to said branch road transmission line 23; Said matrix current adjustment circuit 22 is arranged on the said branch road transmission line 23, is used for the electric current that said power supply signal produces on said branch road transmission line 23 is adjusted into preset rated current.
Wherein, the said power supply signal externally power supply characteristic of power supply is the voltage source characteristic, i.e. its output voltage substantially constant under the different power loading condition.Because voltage source is can not be directly parallel in together; Therefore matrix current adjustment circuit 22 being set has realized changing power supply signal into current source characteristic from voltage source; And the holding current value is constant basically under the situation of different capacity load is load current value, again rated current is pooled to power afterwards and compiles on the bus.
Concrete principle of work is as shown in Figure 4, comprises the steps:
Wherein, comprise power supply signal and data-signal in this mixed signal.
Wherein, Also can isolate data-signal when PD controller 21 is isolated power supply signal from said mixed signal, this data-signal sends through corresponding ports, carries out the test of corresponding data transmission performance; The problem that this and the present invention will solve is irrelevant, repeats no more here.
In the present embodiment, the electric current on the branch road transmission line 23 is adjusted into preset rated current, makes external power termination need not to have the known nominal load value, therefore need not frequent replacing through matrix current adjustment circuit 22 is set.
After this, based on above-mentioned rated current, the survey instrument that is carried by PSE is measured the power supply capacity of corresponding port.
Present embodiment one said device and method separates setting with the PD controller with external power termination, has avoided the baking effect of external power termination to the PD controller, has improved the reliability of testing apparatus; In addition, external power termination can also be changed at any time, therefore, is convenient to plant maintenance, and also is convenient in test process, change different external power terminations according to different testing requirements, has improved the dirigibility of test.
The foregoing description one said device and method is directed against the test that the PSE with a power supply port has realized power supply capacity, and following embodiment two provides the POE equipment testing device and the method that can realize the power supply capacity test to the PSE with a plurality of power supply ports.
Fig. 5 is the structural representation of POE equipment testing device embodiment two according to the invention; As shown in the figure; This is netted very much power-supply unit proving installation 10 and comprises: multiple arrangement body and an external power termination 30; Each said device body links to each other with corresponding PSE port to be measured respectively, and the branch road transmission line through separately is connected to said power and compiles on the bus.For the ease of describing, be that example describes only in the present embodiment with device body 20A and device body 20B, wherein, device body 20A links to each other with PSE port A to be measured, and is connected to power through branch road transmission line 23A and compiles on the bus 40; Device body 20B links to each other with PSE port B to be measured, and is connected to power through branch road transmission line 23B and compiles on the bus 40.Its principle of work is as shown in Figure 6, comprises the steps:
As shown in Figure 5, device body 20A receives the mixed signal that comes from PSE port A to be measured; Device body 20B receives the mixed signal that comes from PSE port B to be measured.
As shown in Figure 5, the PD controller 21A among the device body 20A isolates power supply signal and sends on the branch road transmission line 23A from the mixed signal that comes from PSE port A to be measured; PD controller 21B among the device body 20B isolates power supply signal and sends on the branch road transmission line 23B from the mixed signal that comes from PSE port B to be measured.
As shown in Figure 5, be positioned at the rated current that the matrix current adjustment circuit 22A on the corresponding branch road transmission line 23A of device body 20A produces corresponding power supply signal on branch road transmission line 23A electric current is adjusted into PSE port A corresponding preset to be measured; Be positioned at the rated current that the matrix current adjustment circuit 22B on the corresponding branch road transmission line 23B of device body 20B produces corresponding power supply signal on branch road transmission line 23B electric current is adjusted into PSE port B corresponding preset to be measured.
Produce corresponding rated current and compile bus 40 through a said power and compile and be depleted in the external power termination 30 through branch road transmission line 23A and branch road transmission line 23B are set respectively in device body 20A and device body 20B; Therefore, need not to have the power termination of known nominal load value to each device body setting.
Step 204, a plurality of said rated current are compiled in bus transfer to the external power termination through a said power, and by said external power termination consumption.
As shown in Figure 5, the rated current that comes from the rated current of device body 20A and come from device body 20B is compiled bus 40 through power and is transferred in the external power termination 30, and by should external power termination 30 consumption.
After this, based on corresponding rated current, the survey instrument that is carried by PSE is measured the power supply capacity of corresponding port.
Present embodiment two said device and methods pool together the power of a plurality of PSE ports to be measured, compile bus through a power and are connected in the unified external power termination, have therefore reduced the volume of proving installation, improve integrated level.
In addition; When carrying out the environmental suitability experiment; Need will PSE to be measured to be placed on and keep constant environment temperature in the constant temperature oven and test, when the existing proving installation of employing, if existing proving installation is placed in this constant temperature oven; Because the thermal value of power termination is higher, makes constant temperature oven be difficult to keep required constant temperature; If existing proving installation is placed on outside the constant temperature oven, as shown in Figure 7, then need the connectivity port connecting line between the two, when a plurality of PSE ports to be measured of PSE tool (as 200),, therefore make constant temperature oven to seal also in requisition for many port connecting lines.
Yet; When using the embodiment of the invention two said device and methods; As shown in Figure 8, can the device body of POE equipment testing device and PSE to be measured be positioned in the constant temperature oven, and external power termination is arranged at outside the constant temperature oven; Compile bus through power between external power termination and the device body and be connected, carry out the environmental suitability experiment.Because power compiles bus and has only one, and is much littler than the port connecting line of a plurality of PSE ports to be measured, therefore can not influence the sealing of constant temperature oven.
In addition, the matrix current adjustment circuit 22 among above-mentioned each embodiment can be constant-current source circuit or equalizing control circuit, specifies as follows:
Constant-current source circuit can have multiple implementation, and is for example as shown in Figure 9, is a kind of optional structural representation of constant-current source circuit.Comprise in this constant-current source circuit: (OperationalAmplifier is called for short: OPA), detect resistance R operational amplifier
sAnd pliotron Q1.Its principle of work is following:
The positive input terminal of OPA inserts the power supply signal that comes from PD controller 21, and the negative input end of OPA connects the emitter of pliotron Q1, the base stage of the output termination pliotron Q1 of OPA, and the emitter of Q1 is through detecting resistance R
sConnect negative pole GND, the collector of Q1 connects power through branch road transmission line 23 and compiles bus 40, and then connects external power termination 30, particularly, can pass through pull-up resistor R
LConnect negative pole VCC and (VCC),, can calculate the electric current I=V that flows through on the pull-up resistor according to this circuit structure
REF/ R
s, therefore, through suitable V is set
REFAnd R
sParameter, the rated current that promptly can obtain presetting is to be implemented in R
LThe required power consumption of last consumption.
Except above-mentioned constant-current source circuit; Other can become the multi-channel parallel voltage transitions circuit of one road electric current; Like equalizing control circuit etc., can realize that also the POE that the PD controller of a plurality of POE test ports is separated is pooled to power compiles the purpose on the bus.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of programmed instruction; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (5)
1. POE equipment testing device; It is characterized in that, comprising: device body and external power termination are connected with power in the said external power termination and compile bus; Be provided with Ethernet powered device PD controller and matrix current adjustment circuit in the said device body, wherein:
Said PD controller is connected in said power through the branch road transmission line and compiles on the bus, is used for isolating power supply signal from the mixed signal that comes from POE equipment PSE port to be measured and sends to said branch road transmission line;
Said matrix current adjustment circuit is arranged on the said branch road transmission line, is used for the electric current that said power supply signal produces on said branch road transmission line is adjusted into preset rated current;
Be provided with an external power termination and multiple arrangement body in the said POE equipment testing device, each said device body links to each other with corresponding PSE port to be measured respectively, and the branch road transmission line through separately is connected to said power and compiles on the bus.
2. device according to claim 1 is characterized in that, said matrix current adjustment circuit is constant-current source circuit or equalizing control circuit.
3. the POE apparatus testing method based on POE equipment testing device described in the aforesaid right requirement 1 or 2 is characterized in that, comprising:
Multiple arrangement body in the said POE equipment testing device receives the mixed signal that comes from corresponding POE equipment PSE port to be measured respectively;
Ethernet powered device PD controller in each said device body is isolated power supply signal and is sent on the corresponding branch road transmission line of this device body from the mixed signal that comes from corresponding PSE port to be measured;
The matrix current adjustment circuit that is positioned on the said branch road transmission line is adjusted into preset rated current with the electric current that said power supply signal produces on said branch road transmission line;
The power of said rated current in said POE equipment testing device compiles bus transfer to external power termination, and by said external power termination consumption.
4. method according to claim 3; It is characterized in that the said matrix current adjustment circuit that is positioned on the said branch road transmission line is adjusted into preset rated current with said power supply signal at the electric current that produces on the said branch road transmission line and comprises: be positioned at the rated current that the matrix current adjustment circuit on the corresponding branch road transmission line of each said device body produces corresponding power supply signal on corresponding branch road transmission line electric current is adjusted into corresponding PSE port corresponding preset to be measured.
5. method according to claim 4; It is characterized in that the power of said rated current in said POE equipment testing device compiles bus transfer and to external power termination, comprises: each said rated current is compiled in bus transfer to the external power termination through a said power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101591496A CN101887091B (en) | 2010-04-28 | 2010-04-28 | Device and method for testing Ethernet power supply equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101591496A CN101887091B (en) | 2010-04-28 | 2010-04-28 | Device and method for testing Ethernet power supply equipment |
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| Publication Number | Publication Date |
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| CN101887091A CN101887091A (en) | 2010-11-17 |
| CN101887091B true CN101887091B (en) | 2012-07-25 |
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| CN2010101591496A Expired - Fee Related CN101887091B (en) | 2010-04-28 | 2010-04-28 | Device and method for testing Ethernet power supply equipment |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014117329A1 (en) * | 2013-01-30 | 2014-08-07 | 华为技术有限公司 | Reverse power supply line test system and device |
| CN104422839B (en) * | 2013-09-10 | 2017-09-05 | 华为技术有限公司 | POE functional test circuit and instrument |
| CN105681120A (en) * | 2014-11-21 | 2016-06-15 | 中兴通讯股份有限公司 | Power supply testing method, device and system for power sourcing equipment |
| CN105703618B (en) * | 2016-03-05 | 2019-06-25 | 上海斐讯数据通信技术有限公司 | A kind of circuit and implementation method for realizing high-power power supply using routine POE |
| CN105913737A (en) * | 2016-06-02 | 2016-08-31 | 西安开元电子实业有限公司 | Ethernet power supply experiment apparatus |
| CN107302439B (en) * | 2017-07-31 | 2021-04-06 | 深圳市菲菱科思通信技术股份有限公司 | Adjustable power network powered circuit and equipment |
| CN109257533B (en) * | 2018-03-15 | 2024-03-26 | 北京筑梦园科技有限公司 | Networking power supply device for camera and camera equipment |
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| WO2007139576A1 (en) * | 2006-06-01 | 2007-12-06 | Linear Technology Corporation | Balancing current drawn from multiple power supply inputs using multiple-input inductors |
| CN101529799A (en) * | 2006-09-13 | 2009-09-09 | 凌力尔特有限公司 | Programmable constant power foldback |
| CN101552704A (en) * | 2009-05-05 | 2009-10-07 | 中兴通讯股份有限公司 | Device and method for testing a network device with power supplying function |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7567579B2 (en) * | 1999-08-02 | 2009-07-28 | Microsemi Corp.-Analog Mixed Signal Group Ltd. | Multiple current limits for power over ethernet controller |
| US7705741B2 (en) * | 2007-05-21 | 2010-04-27 | Texas Instruments Incorporated | Detection of a broken wire between power sourcing equipment and a powered device |
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- 2010-04-28 CN CN2010101591496A patent/CN101887091B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007139576A1 (en) * | 2006-06-01 | 2007-12-06 | Linear Technology Corporation | Balancing current drawn from multiple power supply inputs using multiple-input inductors |
| CN101529799A (en) * | 2006-09-13 | 2009-09-09 | 凌力尔特有限公司 | Programmable constant power foldback |
| CN101552704A (en) * | 2009-05-05 | 2009-10-07 | 中兴通讯股份有限公司 | Device and method for testing a network device with power supplying function |
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Granted publication date: 20120725 Termination date: 20160428 |