CN208721750U - A kind of test device and Power over Ethernet function test system - Google Patents
A kind of test device and Power over Ethernet function test system Download PDFInfo
- Publication number
- CN208721750U CN208721750U CN201821368733.0U CN201821368733U CN208721750U CN 208721750 U CN208721750 U CN 208721750U CN 201821368733 U CN201821368733 U CN 201821368733U CN 208721750 U CN208721750 U CN 208721750U
- Authority
- CN
- China
- Prior art keywords
- test device
- port
- isolator
- signal
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Dc Digital Transmission (AREA)
Abstract
The disclosure provides a kind of test device and Power over Ethernet function test system, is related to the field of test technology.The test device that the disclosure provides includes isolator, controller, CPU and port, isolator connectivity port, and controller connects CPU and isolator；The port of test device is connected by the port to be measured of ethernet line and test system, and the port of test device is for receiving electric power signal and data-signal that test system is issued by port to be measured；The data-signal that isolator is used to will be transmitted to the port of test device is transmitted to CPU by controller, CPU be used to be tested according to data-signal the port to be measured of test system and the test device port whether data communication.The test device and Power over Ethernet function test system that the disclosure provides, by the way that CPU can whether data communication be tested port directly according to data-signal to the port to be measured of test system and test device, applicability is higher.
Description
Technical field
This disclosure relates to the field of test technology, in particular to a kind of test device and Power over Ethernet functional test
System.
Background technique
Power over Ethernet (PowerOverEthernet, POE) system refer to existing ethernet line architecture not
Make under any change, for it is some based on the agreement interconnected between network (InternetProtocol, IP) terminals (such as IP electricity
Phone, web camera etc.) transmission data-signal while, moreover it is possible to provide the technology of direct current supply for such equipment.One complete
Whole POE system includes power supply end equipment (PowerSourcingEquipment, PSE) and receiving end equipment
(PoweredDevice, PD) two parts.
Currently, Power over Ethernet device for testing functions can cover function of supplying power, grading function and network function, but it is applicable in
Property it is limited, network function test can only be carried out for the power supply end equipment (PSE) that the network port is even number, and cannot achieve network
Port is the network test of the power supply end equipment of odd-numbered port.
Utility model content
In view of this, present disclose provides a kind of test device and Power over Ethernet function test systems.
A kind of test device that the disclosure provides, including isolator, controller, CPU and port, the isolator connection
The port, the controller connect the CPU and the isolator.
The port of the test device is connected by the port to be measured of ethernet line and test system, the test device
Port is used to receive the electric power signal and data-signal that the test system is issued by the port to be measured.
The data-signal for the port that the isolator is used to will be transmitted to the test device is transmitted by the controller
To the CPU, the CPU be used to be tested according to the data-signal test system port to be measured and the test device
Port whether data communication.
Further, the isolator is transformer；The isolator be used for by the electric power signal and data-signal into
Row separation, the data-signal is drawn by the secondary coil of the isolator and is transmitted to the controller.
Further, the test device further includes the first circuit module, and the isolator passes through the electric power signal
First circuit module is drawn and be transmitted to the primary coil of the isolator, and first circuit module is based on the electric power
Signal powers to the test device.
Further, first circuit module includes power receiving circuit unit and first diode, the power receiving circuit list
First one end is connect with the primary coil of the isolator, and the other end is connect with the anode of the first diode, and the described 1st
The cathode of pole pipe is connect with the power end of the test device.
The power receiving circuit unit is used to carry out power classification to the electric power signal, by the electric power signal after classification
It is powered by the first diode to the test device.
Further, the test device includes second circuit module, and the second circuit module includes conversion circuit list
Member and the second diode, described conversion circuit unit one end are connect with external power supply, the sun of the other end and second diode
Pole connection, the cathode of second diode are connect with the power end of the test device.
Voltage after adjusting is passed through institute for the voltage of the external power supply to be adjusted by the conversion circuit unit
State the power supply of test device described in the second diode pair.
A kind of Power over Ethernet function test system that the disclosure provides, including test system and test device；The survey
Trial assembly is set including port, isolator, CPU and controller, and the isolator connects the port, described in the controller connection
CPU and the isolator.
The test system includes port to be measured；The port of the test device passes through ethernet line and the test system
Port to be measured connection, the port of the test device is used to receive the electricity that the test system is issued by the port to be measured
Force signal and data-signal.
The data-signal for the port that the isolator is used to will be transmitted to the test device is transmitted by the controller
To the CPU, the CPU be used to be tested according to the data-signal test system port to be measured and the test device
Port whether data communication.
Further, the isolator is transformer；The isolator be used for by the electric power signal and data-signal into
Row separation, the data-signal is drawn by the secondary coil of the isolator and is transmitted to the controller.
Further, the test device further includes the first circuit module, and the isolator passes through the electric power signal
First circuit module is drawn and be transmitted to the primary coil of the isolator, and first circuit module is based on the electric power
Signal powers to the test device.
Further, first circuit module includes power receiving circuit unit and first diode, the power receiving circuit list
First one end is connect with the primary coil of the isolator, and the other end is connect with the anode of the first diode, and the described 1st
The cathode of pole pipe is connect with the power end of the test device.
The power receiving circuit unit is used to carry out power classification to the electric power signal, by the electric power signal after classification
It is powered by the first diode to the test device.
Further, the test device includes second circuit module, and the second circuit module includes conversion circuit list
Member and the second diode, described conversion circuit unit one end are connect with external power supply, the sun of the other end and second diode
Pole connection, the cathode of second diode are connect with the power end of the test device.
Voltage after adjusting is passed through institute for the voltage of the external power supply to be adjusted by the conversion circuit unit
State the power supply of test device described in the second diode pair.
A kind of test device and Power over Ethernet function test system that the disclosure provides, are arranged isolation in test device
Device, controller and CPU are integrated in the functional module of data test in test device, and CPU can be treated directly according to data-signal
Whether data communication is tested for the port to be measured and the port of test device for surveying device, and then to the port to be measured of test system
There is no limit applicability is higher for odd even quantity.
To enable the above objects, features, and advantages of the disclosure to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the disclosure, letter will be made to attached drawing needed in the embodiment below
It singly introduces, it should be understood that the following drawings illustrates only some embodiments of the disclosure, therefore is not construed as to range
It limits, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other relevant attached drawings.
Fig. 1 is the test device connection block diagram that the disclosure provides.
Fig. 2 is another connection block diagram for the test device that the disclosure provides.
Fig. 3 is the connection block diagram for the Power over Ethernet function test system that the disclosure provides.
Fig. 4 is another connection block diagram for the Power over Ethernet function test system that the disclosure provides.
Icon: 10- test device；The port 11-；12- isolator；121- primary coil；122- secondary coil；
13- controller；14-CPU；The first circuit module of 15-；151- power receiving circuit unit；152- first diode；16-
Two circuit modules；161- conversion circuit unit；The second diode of 162-；17- power end；20- test system；21- is to be measured
Port；30- ethernet line.
Specific embodiment
Below in conjunction with attached drawing in the disclosure, the technical solution in the disclosure is clearly and completely described, it is clear that
Described embodiment is only disclosure a part of the embodiment, instead of all the embodiments.Usually retouched in attached drawing here
The component for the disclosure stated and shown can be arranged and be designed with a variety of different configurations.Therefore, below to mentioning in the accompanying drawings
The detailed description of the embodiment of the disclosure of confession is not intended to limit claimed the scope of the present disclosure, but is merely representative of this
Disclosed selected embodiment.Based on embodiment of the disclosure, those skilled in the art are in the premise for not making creative work
Under every other embodiment obtained, belong to the disclosure protection range.
In the description of the disclosure, it should be noted that term " in ", "upper", "lower", " left and right ", "inner", "outside" etc. refer to
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings or the disclosure using when usually put
Orientation or positional relationship, be merely for convenience of description the disclosure and simplify description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the disclosure.This
Outside, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In the description of the disclosure, it should be noted that unless otherwise clearly defined and limited, term " setting ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected.It can
To be mechanical connection, it is also possible to be electrically connected.It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the connection inside two elements.For the ordinary skill in the art, it can understand that above-mentioned term exists with concrete condition
Concrete meaning in the disclosure.
Currently, Power over Ethernet device for testing functions is generally possible to covering function of supplying power, grading function and network function, but
It is for network port part of detecting, applicability is limited, the test system that port number is even number can only be tested, and
It cannot achieve the test to the test system that port number is odd number.
Based on the studies above, the disclosure provides a kind of test device and Power over Ethernet function test system, on improving
State problem.
Referring to Fig. 1, for a kind of test device 10 that the disclosure provides, including isolator 12, controller 13, CPU14
(CentralProcessingUnit, central processing unit) and port 11, the isolator 12 connects the port 11, described
Controller 13 connects the CPU14 and the isolator 12.
The port 11 of the test device 10 is connect by ethernet line 30 with the port to be measured 21 of test system 20, described
The port 11 of test device 10 is used to receive the electric power signal and number that the test system 20 is issued by the port 21 to be measured
It is believed that number.
The data-signal for the port 11 that the isolator 12 is used to will be transmitted to the test device 10 passes through the control
Device 13 is transmitted to the CPU14, and the CPU14 is used to test the port to be measured of the test system 20 according to the data-signal
21 with the port 11 of the test device 10 whether data communication.
Wherein, 21 quantity of port to be measured of the test system 20 is multiple, 11 quantity of port of the test device 10
Also to be multiple, optionally, the port 11 of the test device 10 is RJ45 model port, when the test system 20 and the survey
When trial assembly is set 10 connections and tested, all ports 21 to be measured of the test system 20 are connected to institute by ethernet line 30
When stating on the port 11 of test device 10, do not need to correspond between port 21 and port 11 to be measured, it is only necessary to pass through ether
Cable 30 connects.
In Power over Ethernet function system, after end equipment of powering is connect with receiving end equipment, power supply end equipment can be examined
Survey whether receiving end equipment meets the receiving end equipment of IEEE802.3af IEEE802.3at standard, if standard by
Electric end equipment, then end equipment of powering is to receiving end equipment transmission data signal and electric power signal.In the disclosure, the test dress
Set the 10 receiving end equipment for being modeled as standard, the test system 20 is power supply end equipment, when the test system 20 with it is described
After test device 10 connects, the test system 20 transmits data-signal and electric power signal to the test device 10.Wherein institute
It states data-signal and the CPU14 is transferred to by the controller 13 through the isolator 12.The CPU14 receives the number
It is believed that number, to the port 11 of the port to be measured 21 of the test system 20 and the test device 10 by the way of ping test
Whether data communication is tested.By way of ping test, the CPU14 can directly to the test system 20 to
Surveying the port 11 of port 21 and the test device 10, whether data communication is tested, so make the test system 20 to
It is unrestricted to survey 21 quantity of port, for example, passing through ping test when 21 quantity of port to be measured of the test system 20 is one
Mode, the CPU14 can detect the test system 20 port to be measured 21 and the test device 10 port 11 whether
Data communication, when 21 quantity of port to be measured of the test system 20 is more than two, described in the CPU14 can equally be detected
The port 11 of the port to be measured 21 of test system 20 and the test device 10 whether data communication.
Further, the isolator 12 is transformer, and the isolator 12 is used to believe the electric power signal and data
It number is separated, the data-signal is drawn by the secondary coil 122 of the isolator 12 and is transmitted to the controller
13。
Further, the test device 10 further includes the first circuit module 15, and the isolator 12 believes the electric power
It number is drawn by the primary coil 121 of the isolator 12 and is transmitted to first circuit module 15, the first circuit mould
Block 15 is based on the electric power signal and powers to the test device 10.
Wherein, the isolator 12 can be set to multiple, and the primary coil 121 of the isolator 12 and the test fill
10 port 11 is set to connect, the secondary coil 122 of the isolator 12 connect with the controller 13, when the data-signal and
When electric power signal is transmitted to the isolator 12 by the port 11 of the test device 10, from the primary line of the isolator 12
It encloses 121 any fixed taps and draws the electric power signal, and the electric power signal is transmitted to first circuit module 15, from
The secondary coil 122 of the isolator 12 draws the data-signal, and by the data signal transmission to the controller 13,
The CPU14 is transmitted to through the controller 13.
Further, referring to Fig. 2, first circuit module 15 includes power receiving circuit unit 151 and first diode
152, described 151 one end of power receiving circuit unit is connect with the primary coil 121 of the isolator 12, the other end and the described 1st
The anode of pole pipe 152 connects, and the cathode of the first diode 152 is connect with the power end 17 of the test device 10.
The power receiving circuit unit 151 is used to carry out power classification to the electric power signal, by the electric power after classification
Signal powers to the test device 10 by the first diode 152.
After wherein the power receiving circuit unit 151 receives the electric power signal, according to function needed for the test device 10
Rate carries out power classification to the electric power signal, and by the electric power signal after classification by the first diode 152 to described
Test device 10 is powered, and is connect by the anode of the first diode 152 with the power receiving circuit unit 151, described first
Circuit module 15 is set as one-way conduction.
When the test device 10 is after the completion of by electricity, the defeated of the test device 10 can be obtained from the test system 20
Power consumption out, the output power consumption of the test device 10 declare whether power consumption is consistent with the test system 20, if it is
Consistent, then the function of supplying power and power consumption grading function of the test system 20 meet design requirement.
In order to improve production test efficiency, further, referring to Fig. 2, the test device 10 of the offer of the disclosure is also wrapped
Including second circuit module 16, the second circuit module 16 includes conversion circuit unit 161 and the second diode 162, and described turn
161 one end of circuit unit is changed to connect with external power supply, the other end is connect with the anode of second diode 162, and described second
The cathode of diode 162 is connect with the power end 17 of the test device 10.
The conversion circuit unit 161 leads to the voltage after adjusting for the voltage of the external power supply to be adjusted
Second diode 162 is crossed to power to the test device 10.
Wherein the conversion circuit unit 161 is DC/DC circuit (DC-DC circuit), the conversion circuit list
First 161 one end are connect with external power supply, and when external power supply access, the conversion circuit unit 161 can be filled according to the test
Voltage needed for setting 10 voltage of external power supply is adjusted, and the voltage after adjusting is higher than second diode 162
Conducting voltage, and the voltage after adjusting is powered by second diode 162 to the test device 10, by described
The anode of second diode 162 is connect with the conversion circuit unit 161, and the second circuit module 16 is set as unidirectionally leading
It is logical.
Preferentially use the test system 20 to the test when the test system 20 and external power supply access simultaneously
Device 10 is powered, and when 20 abnormal electrical power supply of test system, external power supply power supply seamless switching is may be implemented in external power supply, to
The test device 10 is powered.Wherein pass through the conversion circuit list when the voltage by the power receiving circuit unit 151 is higher than
The voltage of member 161, is powered the test device 10 using the test system 20.
For the ease of the seamless switching of control power supply, the CPU14 connection power end 17, the AD pipe of the CPU14
Foot can be sampled to by the voltage of the power receiving circuit unit 151 and the voltage of the conversion circuit unit 161, and confirmation is worked as
Preceding powering mode is to be powered to the test device 10 using the test system 20 or use external power supply to the test
Device 10 is powered.
By the way that the second circuit module 16 is arranged, external power supply is accessed, the test system 20 may be implemented to described
The seamless switching that the power supply of test device 10 and external power supply are powered to the test device 10, and then remove because production operation is former
Because of the time for causing the ethernet line 30 to cause the test device 10 to be restarted due to plug again, to improve production test effect
Rate.
Please refer to Fig. 3 and Fig. 4, a kind of Power over Ethernet function test system that the disclosure provides, including test system 20
With test device 10；The test device 10 includes port 11, isolator 12, CPU14 and controller 13, and the isolator 12 connects
The port 11 is connect, the controller 13 connects the CPU14 and the isolator 12.
The test system 20 includes port 21 to be measured, and 21 quantity of port to be measured of the test system 20 is unlimited；It is described
The port 11 of test device 10 is connect by ethernet line 30 with the port to be measured 21 of the test system 20, the test device
10 port 11 is used to receive the electric power signal and data-signal that the test system 20 is issued by the port 21 to be measured.
The data-signal for the port 11 that the isolator 12 is used to will be transmitted to the test device 10 passes through the control
Device 13 is transmitted to the CPU14, and the CPU14 is used to test the port to be measured of the test system 20 according to the data-signal
21 with the port 11 of the test device 10 whether data communication.
Power over Ethernet function test system provided by the disclosure, due to the Power over Ethernet function test system packet
Above-mentioned test device 10 is included, therefore, which has skill identical with above-mentioned test device 10
Art feature, this is no longer going to repeat them, please refers to the explanation to the test device 10.
To sum up, a kind of test device and Power over Ethernet function test system provided by the disclosure, in test device
Isolator, controller and CPU are set, are integrated in the functional module of data test in test device, CPU can be directly according to data
Whether data communication is tested for port of the signal to the port to be measured of test system and test device, and then to test system
There is no limit for odd even quantity in port to be measured.Simultaneously by setting second circuit module, external power supply is accessed, dress to be measured may be implemented
It sets to test device power supply and external power supply to the seamless switching between test device power supply, reduces equipment and start the time, thus
Improve production test efficiency.
The foregoing is merely preferred embodiment of the present disclosure, are not limited to the disclosure, for the skill of this field
For art personnel, the disclosure can have various modifications and variations.It is all within the spirit and principle of the disclosure, it is made any to repair
Change, equivalent replacement, improvement etc., should be included within the protection scope of the disclosure.It should also be noted that similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
The above, the only specific embodiment of the disclosure, but the protection scope of the disclosure is not limited thereto, it is any
Those familiar with the art can easily think of the change or the replacement in the technical scope that the disclosure discloses, and should all contain
It covers within the protection scope of the disclosure.Therefore, the protection scope of the disclosure shall be subject to the protection scope of the claim.
Claims (10)
1. a kind of test device, which is characterized in that including isolator, controller, CPU and port, the isolator connects institute
Port is stated, the controller connects the CPU and the isolator；
The port of the test device is connected by the port to be measured of ethernet line and test system, the port of the test device
The electric power signal and data-signal issued for receiving the test system by the port to be measured；
The data-signal for the port that the isolator is used to will be transmitted to the test device is transmitted to institute by the controller
CPU is stated, the CPU is used to test the port to be measured of the test system and the end of the test device according to the data-signal
Mouthful whether data communication.
2. test device according to claim 1, which is characterized in that the isolator is transformer；The isolator is used
It is separated in by the electric power signal and data-signal, the data-signal is drawn by the secondary coil of the isolator
And it is transmitted to the controller.
3. test device according to claim 2, which is characterized in that the test device further includes the first circuit module,
First circuit module is drawn and be transmitted to the electric power signal by the primary coil of the isolator by the isolator,
First circuit module is based on the electric power signal and powers to the test device.
4. test device according to claim 3, which is characterized in that first circuit module includes power receiving circuit unit
And first diode, power receiving circuit unit one end are connect with the primary coil of the isolator, the other end and described first
The anode of diode connects, and the cathode of the first diode is connect with the power end of the test device；
The power receiving circuit unit is used to carry out power classification to the electric power signal, and the electric power signal after classification is passed through
The first diode powers to the test device.
5. test device according to claim 3, which is characterized in that the test device includes second circuit module, institute
Stating second circuit module includes conversion circuit unit and the second diode, and described conversion circuit unit one end and external power supply connect
It connects, the other end is connect with the anode of second diode, the cathode of second diode and the power supply of the test device
End connection；
The conversion circuit unit passes through described for the voltage of the external power supply to be adjusted, by the voltage after adjusting
The power supply of test device described in two diode pairs.
6. a kind of Power over Ethernet function test system, which is characterized in that including test system and test device；The test dress
Set including port, isolator, CPU and controller, the isolator connects the port, the controller connect the CPU with
The isolator；
The test system includes port to be measured；The port of the test device by ethernet line and the test system to
Port connection is surveyed, the port of the test device is used to receive the electric power letter that the test system is issued by the port to be measured
Number and data-signal；
The data-signal for the port that the isolator is used to will be transmitted to the test device is transmitted to institute by the controller
CPU is stated, the CPU is used to test the port to be measured of the test system and the end of the test device according to the data-signal
Mouthful whether data communication.
7. Power over Ethernet function test system according to claim 6, which is characterized in that the isolator is transformation
Device；The data-signal is passed through the isolation for separating the electric power signal and data-signal by the isolator
The secondary coil of device draws and is transmitted to the controller.
8. Power over Ethernet function test system according to claim 7, which is characterized in that the test device further includes
The electric power signal is drawn by the primary coil of the isolator and is transmitted to described by the first circuit module, the isolator
First circuit module, first circuit module are based on the electric power signal and power to the test device.
9. Power over Ethernet function test system according to claim 8, which is characterized in that the first circuit module packet
Power receiving circuit unit and first diode are included, power receiving circuit unit one end is connect with the primary coil of the isolator, separately
One end is connect with the anode of the first diode, and the power end of the cathode of the first diode and the test device connects
It connects；
The power receiving circuit unit is used to carry out power classification to the electric power signal, and the electric power signal after classification is passed through
The first diode powers to the test device.
10. Power over Ethernet function test system according to claim 8, which is characterized in that the test device includes
Second circuit module, the second circuit module include conversion circuit unit and the second diode, the conversion circuit unit one
End connect with external power supply, the other end is connect with the anode of second diode, the cathode of second diode with it is described
The power end of test device connects；
The conversion circuit unit passes through described for the voltage of the external power supply to be adjusted, by the voltage after adjusting
The power supply of test device described in two diode pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821368733.0U CN208721750U (en) | 2018-08-23 | 2018-08-23 | A kind of test device and Power over Ethernet function test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821368733.0U CN208721750U (en) | 2018-08-23 | 2018-08-23 | A kind of test device and Power over Ethernet function test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208721750U true CN208721750U (en) | 2019-04-09 |
Family
ID=65979190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821368733.0U Active CN208721750U (en) | 2018-08-23 | 2018-08-23 | A kind of test device and Power over Ethernet function test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208721750U (en) |
-
2018
- 2018-08-23 CN CN201821368733.0U patent/CN208721750U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI487319B (en) | Power-over-ethernet relay system, power injector and access point | |
| TWI388153B (en) | Network equipment | |
| US7831844B2 (en) | Integrated powered device connector in system for supplying power over communication link | |
| CN109150551A (en) | Non-standard POE power supply circuit, power supply unit and method of supplying power to for network interface | |
| US20140172133A1 (en) | System, method, and apparatus for powering, controlling, and communicating with led lights using modified power-over-ethernet | |
| US9092208B2 (en) | Device and method for powering Ethernet midspan device and endspan device | |
| TW201304453A (en) | Power over Ethernet control system and power supply equipment and power device thereof | |
| CN207490950U (en) | A kind of PoE turns USB power supply units | |
| CN102075331A (en) | Ethernet power supply end equipment as well as system and method thereof for realizing power supply | |
| CN105610586A (en) | Serial port circuit design satisfying power on Ethernet (POE) non-isolated power system | |
| CN104793544B (en) | Bidirectional power supply system in a kind of Ethernet POE | |
| US20180284860A1 (en) | Electronic communications device, particularly power-over-ethernet terminal, as well as add-on board | |
| CN106526403B (en) | A kind of terminal leakage current detection circuit, terminal and terminal leakage current test system | |
| WO2021196677A1 (en) | Optical network unit and poe power supply system | |
| CN107360005B (en) | Power receiving end equipment and power receiving method | |
| CN104422839B (en) | POE functional test circuit and instrument | |
| CN208721750U (en) | A kind of test device and Power over Ethernet function test system | |
| CN201898248U (en) | Device for realizing port interconnection of network power supply unit and system | |
| CN201629756U (en) | Network card power-on detection supply unit and intelligent switch equipment | |
| US20160234029A1 (en) | Power over network device and power over network system including the same | |
| CN214480680U (en) | Industrial gateway and power supply system thereof | |
| CN205452708U (en) | Intelligent socket | |
| CN106160876A (en) | A kind of optical network device and parasite power supplier thereof | |
| CN207868990U (en) | It is a kind of for electric installation | |
| CN206517103U (en) | A kind of fast charging adapter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |