CN109672540A - A method of prevent POE equipment from leading to equipment damage because of network line sequence wrong - Google Patents
A method of prevent POE equipment from leading to equipment damage because of network line sequence wrong Download PDFInfo
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- CN109672540A CN109672540A CN201811348520.6A CN201811348520A CN109672540A CN 109672540 A CN109672540 A CN 109672540A CN 201811348520 A CN201811348520 A CN 201811348520A CN 109672540 A CN109672540 A CN 109672540A
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- equipment
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- pse
- poe
- signal line
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 230000005611 electricity Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000012806 monitoring device Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/004—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of incorrect phase sequence; with switching for obtaining correct phase sequence
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses a kind of method for preventing POE equipment from leading to because of network line sequence wrong equipment damage, include the following steps: to arrange that PSE powers end equipment in a network；Network signal line connect with PSE power supply end equipment, and carries out signal detection and output circuit detection by the series capacitance elements on network signal line；Network signal line and receiving end equipment are connected；When carrying out output circuit detection, in the normal situation of circuit, PSE device is debugged in port output voltage, from low to high, until voltage reaches standard value, then the detection of progress output power, general peak power output are no more than 30W.Compared with prior art; the beneficial effects of the present invention are: being the network signal line in POE monitoring device to upper series capacitance elements; utilize capacity cell stopping direct current; the characteristic of logical exchange; under the transmission for not influencing network data; it is avoided that POE power supply again because of short circuit caused by network line sequence mistake, to protect equipment safety.
Description
Technical field
It is specifically a kind of anti-the present invention relates to the security protection to the network monitoring device using the operation of POE power supply technique
Only POE equipment leads to the method for equipment damage because of network line sequence wrong.
Background technique
Currently, the POE monitoring device of security industry reply because of network line sequence wrong when caused by equipment fault, lack letter
Single effective safeguard procedures.The 10M/100M transmission mode of traditional POE equipment, be using cable 1,2 lines to and 3,6 lines into
The transmission of row data, then on 1,2,3,6 or 4,5,7,8 cables, superposition electric power polarity is powered, in the feelings of cable wrong
Under condition, power positive cathode causes power supply short circuit phenomenon possibly through the loop of data line pair, to damage equipment.
Summary of the invention
The purpose of the present invention is to provide a kind of method for preventing POE equipment from leading to because of network line sequence wrong equipment damage,
To solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A method of it prevents POE equipment because network line sequence wrong leads to equipment damage, includes the following steps:
S10: network transformer exports network signal；
S20: series capacitance on network signal line；
S30: the DC voltage of 24-60V is loaded on wherein four signal wires by power supply module, defeated from network interface
Out；
S40: the cable of transmission network, general length is within 300 meters；
S50: by the cable interface of equipment end, the signal that voltage is loaded in S30 is sent to PD by electric module, this mould
Voltage is transformed into the pressure that electrical equipment needs again by Signal separator by block；
S60: terminal uses equipment, such as web camera.
As a further solution of the present invention: arranging PSE power supply end equipment in a network；
I.e. pass through cable provides power supply for receiving end equipment to PSE power supply end equipment, mainly for electrical characteristic parameter are as follows: voltage exists
Between 44-57V, permission maximum current be 800mA, maximum power be no more than 30W.
As further scheme of the invention: network signal line being connect with PSE power supply end equipment, and carries out signal inspection
It surveys and output circuit detects；
The both ends of network signal line are inserted into the port of PSE power supply end equipment and the port of detection device, signal inspection respectively
Surveying includes signal strength and interference signal intensity, and when output circuit detects, first detection circuit is with the presence or absence of short circuit or open circuit.
As further scheme of the invention: network signal line and receiving end equipment are connected；
Receiving end equipment usually provides cable port, and network signal line is inserted into port, can be transported after being inserted into port
Row POE equipment.
As further scheme of the invention: when carrying out step S10, including the following steps:
End equipment is powered until it detects that the connection of cable terminations is a support IEEE802.3af standard to PSE
Receiving end equipment；
After detecting receiving end equipment PD, PSE device is that PD equipment is classified, and is assessed needed for this PD equipment
Power loss；
Within the starting period of a configurable time, PSE device starts to power from low-voltage to PD equipment, until providing
The DC power supply of 48V.
As further scheme of the invention: when carrying out step S20, including the following steps:
In PCB layout, the series capacitance on network signal line accesses PSE with cable one end, and the other end accesses the end PD.
As further scheme of the invention: when carrying out output circuit detection, in the normal situation of circuit, debugging
PSE device is in port output voltage, from low to high, until voltage reaches standard value, then carries out the detection of output power, generally
Peak power output be no more than 30W.
Compared with prior art, the beneficial effects of the present invention are:
Series capacitance on the route at the end PSD leads to exchange principle, is not influencing network data using capacity cell stopping direct current
While transmission, when avoiding network line sequence wrong (when cable is crimped on crystal head, line sequence fallibility), the direct current of load
Pressure play a reversed role back network transformer output network signal end equipment and draw the burning out of equipment (the i.e. network transformer return of equipment end
When signal, direct current therein can be fallen by the Capacitor apart at the route at the end PSD, avoid burning out equipment).
Detailed description of the invention
Fig. 1 is the flow chart for preventing POE equipment from leading to the method for equipment damage because of network line sequence wrong.
Fig. 2 is the detailed process for preventing POE equipment from leading to step S10 in the method for equipment damage because of network line sequence wrong
Figure.
Fig. 3 is the detailed process for preventing POE equipment from leading to step S20 in the method for equipment damage because of network line sequence wrong
Figure.
Fig. 4 is to prevent POE equipment from leading to one of power supply end equipment detection in the method for equipment damage because of network line sequence wrong
Specific flow chart.
Fig. 5 is the working principle diagram for preventing POE equipment from leading to the method for equipment damage because of network line sequence wrong.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1~4, in the embodiment of the present invention, one kind prevents POE equipment from leading to equipment damage because of network line sequence wrong
Method, include the following steps:
1) PSE power supply end equipment, is arranged in a network；
I.e. pass through cable provides power supply for receiving end equipment to PSE power supply end equipment, mainly for electrical characteristic parameter are as follows: voltage exists
Between 44-57V, permission maximum current be 800mA, maximum power be no more than 30W.
2), the series capacitance elements on network signal line, and shielded layer is provided for series capacitance elements；
3) network signal line is connect with PSE power supply end equipment, and carries out signal detection and output circuit detection；
The both ends of network signal line are inserted into the port of PSE power supply end equipment and the port of detection device, signal inspection respectively
Surveying includes signal strength and interference signal intensity, and when output circuit detects, first detection circuit is with the presence or absence of short circuit or open circuit.
4), network signal line and receiving end equipment are connected；
Receiving end equipment usually provides cable port, and network signal line is inserted into port, can be transported after being inserted into port
Row POE equipment.
When carrying out step 1), include the following steps:
End equipment is powered until it detects that the connection of cable terminations is a support IEEE802.3af standard to PSE
Receiving end equipment；
After detecting receiving end equipment PD, PSE device is that PD equipment is classified, and is assessed needed for this PD equipment
Power loss；
Within the starting period of a configurable time, PSE device starts to power from low-voltage to PD equipment, until providing
The DC power supply of 48V.
When carrying out step 2), include the following steps:
In PCB layout, the series capacitance on network signal line accesses PSE with cable one end, and the other end accesses the end PD.
When carrying out output circuit detection, in the normal situation of circuit, debugging PSE device is in port output voltage, from low
To height, until voltage reaches standard value, then the detection of progress output power, general peak power output are no more than 30W.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of method for preventing POE equipment from leading to equipment damage because of network line sequence wrong, which is characterized in that including walking as follows
It is rapid:
1) PSE power supply end equipment is arranged in a network；
2) series capacitance elements on network signal line；
3) network signal line is connect with PSE power supply end equipment, and carries out signal detection and output circuit detection；
4) network signal line and receiving end equipment are connected；
2. a kind of method for preventing POE equipment from leading to equipment damage because of network line sequence wrong according to claim 1, special
Sign is, arranges PSE power supply end equipment in a network, comprising:
I.e. pass through cable provides power supply for receiving end equipment to PSE power supply end equipment, mainly for electrical characteristic parameter are as follows: voltage is in 44-
Between 57V, permission maximum current be 800mA, maximum power be no more than 30W.
3. a kind of method for preventing POE equipment from leading to equipment damage because of network line sequence wrong according to claim 1, special
Sign is, network signal line is connect with PSE power supply end equipment, and carry out signal detection and output circuit detection, comprising:
The both ends of network signal line are inserted into the port of PSE power supply end equipment and the port of detection device, signal detection packet respectively
Signal strength and interference signal intensity are included, when output circuit detects, first detection circuit is with the presence or absence of short circuit or open circuit.
4. a kind of method for preventing POE equipment from leading to equipment damage because of network line sequence wrong according to claim 1, special
Sign is, network signal line and receiving end equipment are connected, comprising:
Receiving end equipment usually provides cable port, and network signal line is inserted into port, can run POE after being inserted into port
Equipment.
5. a kind of method for preventing POE equipment from leading to equipment damage because of network line sequence wrong according to claim 1 or 2,
It is characterized in that, including the following steps: when carrying out step 1)
End equipment is powered until it detects that the connection of cable terminations is a support IEEE802.3af standard by electricity to PSE
End equipment；
After detecting receiving end equipment PD, PSE device is that PD equipment is classified, and function needed for assessing this PD equipment
Rate loss；
Within the starting period of a configurable time, PSE device starts to power from low-voltage to PD equipment, until providing 48V's
DC power supply.
6. a kind of method for preventing POE equipment from leading to equipment damage because of network line sequence wrong according to claim 1, special
Sign is, when carrying out step 2), includes the following steps:
In PCB layout, the series capacitance on network signal line accesses PSE with cable one end, and the other end accesses the end PD.
7. a kind of method for preventing POE equipment from leading to equipment damage because of network line sequence wrong according to claim 3, special
Sign is, when carrying out output circuit detection, in the normal situation of circuit, debugging PSE device in port output voltage, from as low as
Height, until voltage reaches standard value, then the detection of progress output power, general peak power output are no more than 30W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811348520.6A CN109672540A (en) | 2018-11-13 | 2018-11-13 | A method of prevent POE equipment from leading to equipment damage because of network line sequence wrong |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811348520.6A CN109672540A (en) | 2018-11-13 | 2018-11-13 | A method of prevent POE equipment from leading to equipment damage because of network line sequence wrong |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109672540A true CN109672540A (en) | 2019-04-23 |
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|---|---|---|---|
| CN201811348520.6A Pending CN109672540A (en) | 2018-11-13 | 2018-11-13 | A method of prevent POE equipment from leading to equipment damage because of network line sequence wrong |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060218421A1 (en) * | 2005-03-28 | 2006-09-28 | Akros Silicon, Inc. | Method for dynamic insertion loss control for ethernet signaling from a network attached power sourcing device |
| WO2007121148A2 (en) * | 2006-04-11 | 2007-10-25 | Akros Silicon, Inc. | Network devices for separating power and data signals |
| US20110258464A1 (en) * | 2010-04-16 | 2011-10-20 | Silicon Laboratories, Inc. | Circuit and Method for Detecting a Legacy Powered Device in a Power over Ethernet System |
| CN202818107U (en) * | 2012-09-13 | 2013-03-20 | 深圳市金威源科技股份有限公司 | Power supply device based on power provided by ethernet |
| CN106656654A (en) * | 2016-10-28 | 2017-05-10 | 锐捷网络股份有限公司 | Network fault diagnosis methods and network fault diagnosis device |
-
2018
- 2018-11-13 CN CN201811348520.6A patent/CN109672540A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060218421A1 (en) * | 2005-03-28 | 2006-09-28 | Akros Silicon, Inc. | Method for dynamic insertion loss control for ethernet signaling from a network attached power sourcing device |
| WO2007121148A2 (en) * | 2006-04-11 | 2007-10-25 | Akros Silicon, Inc. | Network devices for separating power and data signals |
| US20110258464A1 (en) * | 2010-04-16 | 2011-10-20 | Silicon Laboratories, Inc. | Circuit and Method for Detecting a Legacy Powered Device in a Power over Ethernet System |
| CN202818107U (en) * | 2012-09-13 | 2013-03-20 | 深圳市金威源科技股份有限公司 | Power supply device based on power provided by ethernet |
| CN106656654A (en) * | 2016-10-28 | 2017-05-10 | 锐捷网络股份有限公司 | Network fault diagnosis methods and network fault diagnosis device |
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