CN103529367B - A kind of DSL Modem anti-lightning method of testing - Google Patents
A kind of DSL Modem anti-lightning method of testing Download PDFInfo
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- CN103529367B CN103529367B CN201310489505.4A CN201310489505A CN103529367B CN 103529367 B CN103529367 B CN 103529367B CN 201310489505 A CN201310489505 A CN 201310489505A CN 103529367 B CN103529367 B CN 103529367B
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Abstract
Do you the invention discloses a kind of DSL? Modem anti-lightning method of testing, it belongs to equipment anti-lightning technical field; Does step specifically comprise: step 1, by DSL? the DSL interface of Modem equipment is connected with two output interfaces of thunderbolt generating means respectively with LAN interface; Does step 2, detect DSL? whether Modem equipment can normally run; If can normally run, then go to step 3; Cannot do you if normally run, then judge DSL? Modem equipment does not meet anti-lightning standard, with backed off after random; Step 3, by DSL? the DSL interface of Modem equipment is connected with two output interfaces of thunderbolt generating means respectively with ground connection mouth; Does step 4, detect DSL? whether Modem equipment can normally run; Can do you if normally run, then judge DSL? Modem equipment meets anti-lightning standard, with backed off after random; Cannot do you if normally run, then judge DSL? Modem equipment does not meet anti-lightning standard, with backed off after random.Does is the beneficial effect of technique scheme: ensure that DSL? Modem can bear thunderbolt energy when normal operation, realizes fairly simple simultaneously.
Description
Technical field
The present invention relates to equipment anti-lightning technical field, particularly relate to a kind of DSLModem anti-lightning method of testing.
Background technology
Along with Science and Technology Day reaches increasingly, electronic product is also increasing, DSLModem(DSL modulator-demodular unit) product is one of them.DSL(DigitalSubscriberLine, digital subscriber line) technology is broadband access technology based on ordinary telephone line, it transmits data and voice signal respectively on same copper cash, data-signal is not by telephone exchange machine equipment, alleviate the load of telephone exchange, and do not need dialing, online, belong to Internet access via leased-line mode always.Equipment also subjects the baneful influence of physical environment easily simultaneously bringing people, be thunder and lightning weather especially significantly, generation near installations and facilities or circuit of being struck by lightning, or lightning does not directly discharge over the ground, only between cloud layer and cloud layer, electric discharge phenomena occurs.Lightning release electric charge, and induction generates superpotential on power supply and data transmission link and metallic conduit metal support.Lightning discharge is in time having the buildings of lightening protection installation, lightning wave is released in the process of the earth along top of building arrester (lighting proof strip, lightning conducter, lightning conduction or lightning rod), downlead, powerful transient magnetic field can be formed around downlead, light then cause electronic equipment to be interfered, loss of data, produces misoperation or temporarily paralyses; Components and parts can be caused time serious to puncture and circuit board burns, make whole system at a standstill, for electronic product, even user, all there is huge destructive power, the safety of electronic product and user in serious threat, so electronic product is sufficiently intrepid in the anti-lightning ability of design phase, can bear natural thunderbolt interference in actual use.
Usually, when there being thunder-strike phenomenon, often common mode broken by lightning is produced to the network line of user.So-called common mode thunderbolt, refers to that thunderbolt energy directly forms loop with the earth, thus damages the equipment be positioned in loop path.Such as, as shown in Figure 1, a kind of common mode thunderbolt path is that thunderbolt energy is incorporated into the DSL interface (Internet internet is accessed in telephone wire A other end) of DSLModem equipment by telephone wire A, be incorporated into the wan interface of router (Router) again by netting twine B by the LAN interface of DSLModem equipment, be incorporated into the LAN interface of user's computer (Computer) again by the LAN interface of router by twisted-pair feeder C, thus constitute the common-mode path of thunderbolt.Interface in above-mentioned common-mode path has the possibility damaged by thunderbolt energy.And in prior art, lack the related art scheme that DSLModem equipment anti-lightning ability is tested.
Chinese patent (CN201656465U) discloses a kind of overcurrent-overvoltage preventing port protection circuit; line side and circuit side is divided into by isolating transformer; line side is connected with digital subscriber line; in line side; after isolating transformer and the first capacitances in series; the gas-discharge tube in parallel with protecting field with a pair is in parallel, then connects with two circuit protective tubes.Technique scheme is protected DSL line mainly for overcurrent-overvoltage situation, can not solve problems of the prior art;
Chinese patent (CN201541124U) discloses a kind of circuit for protecting digital subscriber lines; in the circuit comprising first user line, the second subscribers feeder, the first over-voltage protector, the second over-voltage protector, the first over-current protection device, the second over-current protection device; add the 3rd over-voltage protector, be connected between first user line and protecting field; 4th over-voltage protector, is connected between the second subscribers feeder and protecting field; Wherein, the 3rd over-voltage protector and the 4th over-voltage protector are used for starting to release energy higher than during threshold value at outside interference voltage.Technique scheme still relates to the over-current over-voltage protection to DSL line, can not solve problems of the prior art.
Summary of the invention
According to problems of the prior art, namely how the anti-lightning ability of DSLModem equipment is tested, a kind of DSLModem anti-lightning method of testing is now provided, specifically comprises:
A kind of DSLModem anti-lightning method of testing, is applicable to DSLModem equipment; Described DSLModem equipment comprises a DSL interface, a LAN interface and a ground connection mouth; Described ground connection mouth ground connection;
Wherein, a thunderbolt generating means is adopted to carry out anti-lightning test to described DSLModem; Described thunderbolt generating means produces thunderbolt energy for simulating; Described thunderbolt generating means is provided with at least two output interfaces;
The step of described DSLModem anti-lightning method of testing specifically comprises:
Step 1, is connected with two described output interfaces of described thunderbolt generating means with described LAN interface respectively by the described DSL interface of described DSLModem equipment, to form a high-voltage pulse between described DSL interface and described LAN interface;
Whether step 2, detect described DSLModem equipment and can normally run;
If described DSLModem equipment can normally run, then go to step 3;
If described DSLModem equipment cannot normally run, then judge that described DSLModem equipment does not meet anti-lightning standard, with backed off after random;
Step 3, is connected with two described output interfaces of described thunderbolt generating means with described ground connection mouth respectively by the described DSL interface of described DSLModem equipment, to form described high-voltage pulse between described DSL interface and described ground connection mouth;
Whether step 4, detect described DSLModem equipment and can normally run;
If described DSLModem equipment can normally run, then judge that described DSLModem equipment meets anti-lightning standard, with backed off after random;
If described DSLModem equipment cannot normally run, then judge that described DSLModem equipment does not meet anti-lightning standard, with backed off after random.
Preferably, this DSLModem anti-lightning method of testing, wherein, at least two described output interfaces comprise first interface and the second interface;
In described step 1, the step that the described DSL interface of described DSLModem equipment and described LAN interface are connected with two described output interfaces of described thunderbolt generating means respectively is specifically comprised:
Step 11, is connected described second interface of described thunderbolt generating means with the described DSL interface of described DSLModem equipment;
Step 12, is connected the described LAN interface of the described first interface of described thunderbolt generating means with described DSLModem equipment;
Step 13, produces described high-voltage pulse by described first interface and described second interface between described DSL interface and described LAN interface; Go to described step 2 subsequently.
Preferably, this DSLModem anti-lightning method of testing, wherein, in described step 2, detects the step whether described DSLModem equipment can normally run and specifically comprises:
Step 21, detects described DSLModem equipment and whether occurs abnormal conditions;
If abnormal conditions appear in described DSLModem equipment, then judge that described DSLModem equipment does not meet anti-lightning standard, with backed off after random;
If abnormal conditions do not appear in described DSLModem equipment, then go to step 22;
Step 22, described thunderbolt generating means is out of service, and whether detect described DSLModem equipment subsequently can normal boot-strap;
If described DSLModem equipment can normal boot-strap, then go to described step 3;
If described DSLModem equipment cannot normal boot-strap, then judge that described DSLModem equipment does not meet anti-lightning standard, with backed off after random.
Preferably, the concrete steps that the described DSL interface of described DSLModem equipment and described ground connection mouth are connected with two described output interfaces of described thunderbolt generating means respectively, wherein, in described step 3, are comprised by this DSLModem anti-lightning method of testing:
Step 31, is connected the described first interface of described thunderbolt generating means with the described DSL interface of described DSLModem equipment;
Step 32, is connected described second interface of described thunderbolt generating means with the described ground connection mouth of described DSLModem equipment;
Step 33, by described first interface and described second interface of described thunderbolt generating means, produces described high-voltage pulse between the described DSL interface and described ground connection mouth of described DSLModem equipment; Go to described step 4 subsequently.
Preferably, this DSLModem anti-lightning method of testing, wherein, described high-voltage pulse is the thunderbolt energy of a 6KV.
Preferably, this DSLModem anti-lightning method of testing, wherein, in described step 4, detects the step whether described DSLModem equipment can normally run and specifically comprises:
Step 41, detects described DSLModem equipment and whether occurs abnormal conditions;
If abnormal conditions appear in described DSLModem equipment, then judge that described DSLModem equipment does not meet anti-lightning standard, with backed off after random;
If abnormal conditions do not appear in described DSLModem equipment, then go to step 42;
Step 42, described thunderbolt generating means is out of service, and whether detect described DSLModem equipment subsequently can normal boot-strap;
If described DSLModem equipment can normal boot-strap, then judge that described DSLModem equipment meets anti-lightning standard, with backed off after random;
If described DSLModem equipment cannot normal boot-strap, then judge that described DSLModem equipment does not meet anti-lightning standard, with backed off after random.
The beneficial effect of technique scheme is:
1) the anti-lightning ability of DSLModem is tested, ensure that DSLModem can bear thunderbolt energy when normal operation, ensure the use safety of equipment and user.
2) connect simply, realize cost lower.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that in prior art, DSLModem equipment is connected with router and user computer;
Fig. 2-3 is in preferred embodiment of the present invention, DSLModem equipment is carried out to the foundation structure schematic diagram of anti-lightning test;
Fig. 4-8 is in preferred embodiment of the present invention, DSLModem equipment is carried out to the schematic flow sheet of anti-lightning test;
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.
For thunderbolt, the thunderbolt of occurring in nature is divided into direct lightning strike and induced lightening two kinds usually, direct lightning strike refers to charged cloud layer and the large swift and violent electric discharge phenomena occurred between a certain point on the ground, induced lightening refers to that charged cloud layer is due to electrostatic induction effect, make ground within the scope of some because spreading resistance is larger, so that there is the high voltage of local, or due in direct lightning strike discharge process, powerful pulse current produces electromagnetic induction generation high voltage to the wire of surrounding or metal object so that launch as surprise attack phenomenon.For DSLModem equipment, induced lightening can cause larger more general infringement relatively.
As shown in Figure 2, in preferred embodiment of the present invention, a thunderbolt generating means 1 pair of DSLModem equipment 2 is adopted to carry out anti-lightning test.In preferred embodiment of the present invention, DSLModem equipment 2 includes DSL interface 21, LAN interface 22 and a ground connection mouth 23; Wherein LAN interface 22 connects the wan interface of router (Router), ground connection mouth 23 ground connection.
In preferred embodiment of the present invention, above-mentioned thunderbolt generating means 1 produces thunderbolt energy for simulating.Above-mentioned thunderbolt generating means 1 is provided with at least two output interfaces.Further, in preferred embodiment of the present invention, above-mentioned thunderbolt generating means 1 arranges four interfaces; Above-mentioned four interfaces arrange as shown in Figure 2.Due to thunderbolt generating means 1 being generally provided with multiple interface, therefore in the mode of four interfaces, technical scheme of the present invention is described in detail in preferred embodiment of the present invention.
In preferred embodiment of the present invention, the interface be connected with the LAN interface 22 of DSLModem equipment 2 in described thunderbolt generating means 1 is set to first interface 11, connecting line is D line; The interface be connected with the DSL interface 21 of DSLModem equipment 2 in described thunderbolt generating means 1 is set to the second interface 12, and connecting line is E line.
Same, as shown in Figure 3, the interface be connected with the DSL interface 21 of DSLModem equipment 2 in described thunderbolt generating means 1 can be set to first interface 11, connecting line is F line; The interface be connected with the ground connection mouth 23 of DSLModem equipment in described thunderbolt generating means 1 is set to the second interface 12, and connecting line is G line.
Above-mentioned two kinds of connected modes, for be following two different testing procedures.
In preferred embodiment of the present invention, because above-mentioned two kinds of connected modes can not work at one time, for four interfaces on thunderbolt generating means 1, in each test process, reality only needs to use two interfaces.The setting of above-mentioned four interfaces, is only included in preferred embodiment of the present invention, not thereby limits the scope of the invention.
In other embodiments of the present invention, also can adopt the output interface (such as two or three etc.) of different number (>=2), above-mentioned annexation can be realized equally.Therefore, only can be included in this preferred embodiment by the technical characteristic (number of such as output interface is arranged) selected in above-mentioned preferred embodiment, not thereby limit the scope of the invention.
As shown in Figure 4, in preferred embodiment of the present invention, rely on above-mentioned foundation structure, a kind of DSLModem anti-lightning method of testing specifically comprises:
Step 1, is connected with two output interfaces of thunderbolt generating means, to form a high-voltage pulse between DSL interface and LAN interface with LAN interface respectively by the DSL interface of DSLModem equipment;
Whether step 2, detect DSLModem equipment and can normally run;
If DSLModem equipment can normally run, then go to step 3;
If DSLModem equipment cannot normally run, then judge that DSLModem equipment does not meet anti-lightning standard, with backed off after random;
Step 3, is connected with two output interfaces of thunderbolt generating means, to form a high-voltage pulse between DSL interface and ground connection mouth with ground connection mouth respectively by the DSL interface of DSLModem equipment;
Whether step 4, detect DSLModem equipment and can normally run;
If DSLModem equipment can normally run, then judge that DSLModem equipment meets anti-lightning standard, with backed off after random;
If DSLModem equipment cannot normally run, then judge that DSLModem equipment does not meet anti-lightning standard, with backed off after random.
In preferred embodiment of the present invention, above-mentioned high-voltage pulse is actual is the thunderbolt energy of a 6KV, is produced by the thunderbolt generating means 1 be positioned under differential mode test pattern.
Below step as shown in Figure 4 is explained one by one:
As shown in Figure 5, in above-mentioned steps 1, specifically include:
Step 11, is connected thunderbolt the second interface of generating means with the DSL interface of DSLModem equipment;
In preferred embodiment of the present invention, E line is as shown in Figure 2 adopted to be coupled together with the DSL interface 21 of DSLModem equipment 2 by the second interface 12 of thunderbolt generating means 1;
Step 12, is connected the first interface of thunderbolt generating means with the LAN interface of DSLModem equipment;
In preferred embodiment of the present invention, D line is as shown in Figure 2 adopted to be coupled together with the LAN interface 22 of DSLModem equipment 2 by the first interface 11 of thunderbolt generating means 1;
Step 13, produces high-voltage pulse by first interface and the second interface between DSL interface and LAN interface; Go to step 2 subsequently.
In preferred embodiment of the present invention, the differential mode producing a 6KV between first interface 11 and the second interface 12 is struck by lightning, and (by being struck by lightning, generating means is adjusted to differential mode test mode to energy, and between first interface 11 and the second interface 12, produce a thunderbolt energy), further, in preferred embodiment of the present invention, the thunderbolt energy produced between first interface 11 and the second interface 12 is indirect lightning strike energy.
As shown in Figure 6, in preferred embodiment of the present invention, above-mentioned steps 2 specifically comprises:
Step 21, detects DSLModem equipment and whether occurs abnormal conditions;
If abnormal conditions appear in DSLModem equipment, then judge that DSLModem equipment does not meet anti-lightning standard, with backed off after random;
If abnormal conditions do not appear in DSLModem equipment, then go to step 22;
Step 22, thunderbolt generating means is out of service, and whether detect DSLModem equipment subsequently can normal boot-strap;
If DSLModem equipment can normal boot-strap, then go to step 3;
If DSLModem equipment cannot normal boot-strap, then judge that DSLModem equipment does not meet anti-lightning standard, with backed off after random.
In preferred embodiment of the present invention, whether have abnormal occurrence, power on start subsequently after current connecting test is complete if in anti-lightning test process, first detecting DSLModem equipment, and whether the operation conditions detecting DSLModem equipment is normal.Above-mentioned two testing results all show normally, then proceed next testing process; If the display of one of them testing result is abnormal, then think that DSLModem equipment does not meet anti-lightning standard, with backed off after random testing process.
As shown in Figure 7, in preferred embodiment of the present invention, above-mentioned steps 3 specifically comprises:
Step 31, is connected the thunderbolt first interface of generating means with the DSL interface of DSLModem equipment;
In preferred embodiment of the present invention, F line as shown in Figure 3 is adopted to be coupled together with the DSL interface 21 of DSLModem equipment 2 by the first interface 11 of thunderbolt generating means 1;
Step 32, is connected the 4th interface of thunderbolt generating means with the ground connection mouth of DSLModem equipment;
In preferred embodiment of the present invention, G line as shown in Figure 3 is adopted to be coupled together with the ground connection mouth 23 of DSLModem equipment 2 by second interface 12 of thunderbolt generating means 1;
Step 33, by first interface and second interface of the generating means that is struck by lightning, produces high-voltage pulse between the DSL interface and ground connection mouth of DSLModem equipment; Go to step 4 subsequently.
In preferred embodiment of the present invention, the differential mode producing a 6KV between first interface 11 and the second interface 12 is struck by lightning, and (by being struck by lightning, generating means is adjusted to differential mode test mode to energy, and between first interface 11 and the 4th interface 14, produce a thunderbolt energy), further, in preferred embodiment of the present invention, the thunderbolt energy produced between first interface 11 and the second interface 12 is indirect lightning strike energy.
As shown in Figure 8, in preferred embodiment of the present invention, similar in above-mentioned steps 4 and step 2, specifically comprise:
Step 41, detects DSLModem equipment and whether occurs abnormal conditions;
If abnormal conditions appear in DSLModem equipment, then judge that DSLModem equipment does not meet anti-lightning standard, with backed off after random;
If abnormal conditions do not appear in DSLModem equipment, then go to step 42;
Step 42, thunderbolt generating means is out of service, and whether detect DSLModem equipment subsequently can normal boot-strap;
If DSLModem equipment can normal boot-strap, then judge that DSLModem equipment meets anti-lightning standard, with backed off after random;
If DSLModem equipment cannot normal boot-strap, then judge that DSLModem equipment does not meet anti-lightning standard, with backed off after random.
In preferred embodiment of the present invention, whether have abnormal occurrence, power on start subsequently after current connecting test is complete if in anti-lightning test process, first detecting DSLModem equipment, and whether the operation conditions detecting DSLModem equipment is normal.Above-mentioned two testing results all show normally, then think that DSLModem equipment meets anti-lightning standard, with backed off after random testing process; If the display of one of them testing result is abnormal, then think that DSLModem equipment does not meet anti-lightning standard, with backed off after random testing process.
The foregoing is only preferred embodiment of the present invention; not thereby embodiments of the present invention and protection domain is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilizations instructions of the present invention and diagramatic content and apparent change obtain in protection scope of the present invention.
Claims (6)
1. a DSLModem anti-lightning method of testing, is applicable to DSLModem equipment; Described DSLModem equipment comprises a DSL interface, a LAN interface and a ground connection mouth; Described ground connection mouth ground connection;
It is characterized in that, adopt a thunderbolt generating means to carry out anti-lightning test to described DSLModem; Described thunderbolt generating means produces thunderbolt energy for simulating; Described thunderbolt generating means is provided with at least two output interfaces;
The step of described DSLModem anti-lightning method of testing specifically comprises:
Step 1, is connected with two described output interfaces of described thunderbolt generating means with described LAN interface respectively by the described DSL interface of described DSLModem equipment, to form a high-voltage pulse between described DSL interface and described LAN interface;
Whether step 2, detect described DSLModem equipment and can normally run;
If described DSLModem equipment can normally run, then go to step 3;
If described DSLModem equipment cannot normally run, then judge that described DSLModem equipment does not meet anti-lightning standard, with backed off after random;
Step 3, is connected with two described output interfaces of described thunderbolt generating means with described ground connection mouth respectively by the described DSL interface of described DSLModem equipment, to form described high-voltage pulse between described DSL interface and described ground connection mouth;
Whether step 4, detect described DSLModem equipment and can normally run;
If described DSLModem equipment can normally run, then judge that described DSLModem equipment meets anti-lightning standard, with backed off after random;
If described DSLModem equipment cannot normally run, then judge that described DSLModem equipment does not meet anti-lightning standard, with backed off after random.
2. DSLModem anti-lightning method of testing as claimed in claim 1, it is characterized in that, at least two described output interfaces comprise first interface and the second interface;
In described step 1, the step that the described DSL interface of described DSLModem equipment and described LAN interface are connected with two described output interfaces of described thunderbolt generating means respectively is specifically comprised:
Step 11, is connected described second interface of described thunderbolt generating means with the described DSL interface of described DSLModem equipment;
Step 12, is connected the described LAN interface of the described first interface of described thunderbolt generating means with described DSLModem equipment;
Step 13, produces described high-voltage pulse by described first interface and described second interface between described DSL interface and described LAN interface; Go to described step 2 subsequently.
3. DSLModem anti-lightning method of testing as claimed in claim 1, is characterized in that, in described step 2, detects the step whether described DSLModem equipment can normally run and specifically comprises:
Step 21, detects described DSLModem equipment and whether occurs abnormal conditions;
If abnormal conditions appear in described DSLModem equipment, then judge that described DSLModem equipment does not meet anti-lightning standard, with backed off after random;
If abnormal conditions do not appear in described DSLModem equipment, then go to step 22;
Step 22, described thunderbolt generating means is out of service, and whether detect described DSLModem equipment subsequently can normal boot-strap;
If described DSLModem equipment can normal boot-strap, then go to described step 3;
If described DSLModem equipment cannot normal boot-strap, then judge that described DSLModem equipment does not meet anti-lightning standard, with backed off after random.
4. DSLModem anti-lightning method of testing as claimed in claim 2, it is characterized in that, in described step 3, the concrete steps that the described DSL interface of described DSLModem equipment and described ground connection mouth are connected with two described output interfaces of described thunderbolt generating means are respectively comprised:
Step 31, is connected the described first interface of described thunderbolt generating means with the described DSL interface of described DSLModem equipment;
Step 32, is connected described second interface of described thunderbolt generating means with the described ground connection mouth of described DSLModem equipment;
Step 33, by described first interface and described second interface of described thunderbolt generating means, produces described high-voltage pulse between the described DSL interface and described ground connection mouth of described DSLModem equipment; Go to described step 4 subsequently.
5. as the DSLModem anti-lightning method of testing in claim 2 or 4 as described in any one, it is characterized in that, described high-voltage pulse is the thunderbolt energy of a 6KV.
6. DSLModem anti-lightning method of testing as claimed in claim 1, is characterized in that, in described step 4, detects the step whether described DSLModem equipment can normally run and specifically comprises:
Step 41, detects described DSLModem equipment and whether occurs abnormal conditions;
If abnormal conditions appear in described DSLModem equipment, then judge that described DSLModem equipment does not meet anti-lightning standard, with backed off after random;
If abnormal conditions do not appear in described DSLModem equipment, then go to step 42;
Step 42, described thunderbolt generating means is out of service, and whether detect described DSLModem equipment subsequently can normal boot-strap;
If described DSLModem equipment can normal boot-strap, then judge that described DSLModem equipment meets anti-lightning standard, with backed off after random;
If described DSLModem equipment cannot normal boot-strap, then judge that described DSLModem equipment does not meet anti-lightning standard, with backed off after random.
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