CN101739325A - Device and method for testing hot plugging of interface - Google Patents
Device and method for testing hot plugging of interface Download PDFInfo
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- CN101739325A CN101739325A CN200910242081A CN200910242081A CN101739325A CN 101739325 A CN101739325 A CN 101739325A CN 200910242081 A CN200910242081 A CN 200910242081A CN 200910242081 A CN200910242081 A CN 200910242081A CN 101739325 A CN101739325 A CN 101739325A
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Abstract
The invention provides a device and a method for testing hot plugging of an interface. A test device comprises a first capacitor, a second capacitor and a testing wire, wherein the first and second capacitors are connected in series between a live wire and a naught wire; and one end of the testing wire is connected between the first capacitor and the second capacitor, while the other end is connected with a pin of the interface to be tested. The test device with the structure can perform a hot plugging test of a signal wire of the interface to be tested under the maximum hot plugging energy and achieves a correct test result, high test efficiency and low test cost, so the problems of high randomness in the test result and incorrect test result existing in the prior art are solved.
Description
Technical field
The present invention relates to the interface circuit field of input-output apparatus, in particular to the proving installation and the method for hot plugging of interface.
Background technology
Under the hot-swappable situation that is often referred to powered-down not, the action that some part of equipment is inserted or extracted.
Such as in actual applications, the user need dispose by PC in order to dispose an equipment, generally by Serial Port Line the serial ports of PC and equipment is coupled together at present, by the serial ports configuration device of PC, client's plug serial ports cable under the situation that two equipment all power on constantly can take place in this.
The hot-swappable consequence that causes of serial ports: cause serial ports to damage.Usually computer by serial is not allow hot-swappablely, but it is hot-swappable to be difficult to avoid the user in use to carry out serial ports.So the serial ports of communication facilities such as router, Ethernet switch all can increase some safeguard measures, reduce the probability of the hot-swappable damage of serial ports.
In order to verify the hot-swappable protective capability of serial ports of equipment such as router, Ethernet switch, need test.
Present problem is: how carrying out the hot-swappable test of serial ports does not have corresponding standard, or corresponding test method.
Usually according to the hot-swappable practical operation of serial ports, carry out simulation test.As shown in Figure 1: the serial ports of computing machine 01 and switch/router 00 is connected by Serial Port Line 02.Power lead 03 is used for to power devices, and the equipment here refers to computing machine, switch/router.
Accordingly, hot-swappable method of testing mainly comprises the steps:
1) power on for computing machine 01 and switch/router 00;
2) pull out the end that Serial Port Line 02 connects switch, plug the end that Serial Port Line 02 connects switch again;
3) repeatedly repeat 2) step (multiplicity does not have standard);
4) guarantee that Serial Port Line 02 plugs;
5) be configured by 01 pair of switch/router 00 of computing machine,, judge that the hot-swappable test of switch/router is passed through as passing through the normal configuration switch of serial ports.The hot-swap capabilities of switch/router is up to standard; Otherwise the hot-swappable test of judgement switch/router is not passed through.
Mainly there are following three problems in above-mentioned method of testing:
1) uses this method of testing, the easier damage of serial ports of computers usually, test cost height.
2) use this method of testing, the switch/router that test is passed through, the hot-swappable protective capability of its serial ports can't guarantee to satisfy practical application.Because just simulate being connected of a computing machine and a switch/router, all powering on and have tens equipment in the actual environment.Hereinafter can describe the equipment that other power in the actual environment, can strengthen the hot-swappable energy of serial ports, cause the hot-swappable damage of serial ports easilier.If powering on and simulate tens equipment, then testing apparatus needs a lot.
3) use this method of testing, test result randomness is very big because the signal definition of serial ports does not have the branch of length, so plug moment can not guarantee any root signal wire contact earlier.This method of testing can cause and may protect inadequately by some signal wire, and can't test out.
According to this method of testing may cause among the following result one of at least:
1) test result is inaccurate.By the equipment of the hot-swappable simulation test of serial ports, under practical application, also have damage;
2) testing efficiency is low.The test of Devices to test needs repeatedly simulative serial port line plug test (as plug several thousand times);
3) testing expense height.May cause serial ports of computers to damage.Perhaps, need tens equipment in order to simulate actual application environment.
Summary of the invention
The present invention aims to provide a kind of proving installation and method of hot plugging of interface, can solve the inaccurate problem of the test result that exists in the prior art.
According to an aspect of the present invention, provide a kind of proving installation of hot plugging of interface, having comprised: be connected in series in first electric capacity and second electric capacity between live wire and the zero line; P-wire, an end of p-wire is connected between first electric capacity and second electric capacity, and the other end is used to connect the pin of interface to be measured.
According to another aspect of the present invention, also provide a kind of method of testing of hot plugging of interface, having comprised: proving installation and device to be measured have been powered on successively; Each pin of interface on p-wire in the proving installation and the device to be measured is carried out contacting and opening operation of pre-determined number successively; By interface device to be measured is configured, if configuration successful, then the hot-swappable test of interface is passed through.
By using the hot plugging of interface proving installation, each pin of interface on the p-wire of proving installation and the device to be measured is carried out contacting and opening operation of pre-determined number successively, each pin to device to be measured has carried out destructive testing respectively, test mode according to this simulation, can under the hot plug energy of maximum, carry out the hot plug test by the signal wire to interface to be measured, and test result is accurate, testing efficiency is high, testing expense is lower, has in the prior art that test result randomness is big, the inaccurate problem of test result thereby overcome.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the proving installation synoptic diagram of the hot plugging of interface of prior art;
Fig. 2 shows the device connection diagram that is used to analyze according to the interface hot drawing method of testing of the embodiment of the invention;
Fig. 3 shows the proving installation synoptic diagram of hot plugging of interface according to an embodiment of the invention;
Fig. 4 shows the proving installation synoptic diagram of hot plugging of interface according to a preferred embodiment of the present invention;
Fig. 5 shows the proving installation synoptic diagram of hot plugging of interface according to a further advantageous embodiment of the invention;
Fig. 6 shows the process flow diagram according to the method for testing of the hot plugging of interface of the embodiment of the invention;
Fig. 7 shows in accordance with a preferred embodiment of the present invention the test interface device connection diagram when hot-swappable.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Before describing method of testing of the present invention and proving installation, at first be that example comes the principle according to the interface hot drawing method of testing of the embodiment of the invention is analyzed in conjunction with the accompanying drawings with the serial ports.
The hot-swappable damage of serial ports former is because serial ports can produce power when hot-swappable, and energy is big more, easy more damage equipment.When the limit that energy can bear greater than serial port circuit, serial ports will damage.
It is interconnected that the hot-swappable energy source of serial ports passes through serial ports in two equipment, forms hot-swappable energy because of two equipment above earth potentials are uneven.
The uneven reasons of two equipment above earth potentials mainly are that an equipment is ground wire grounded good, ground wire grounded bad the causing of an other equipment.
The ground wire itself that the equipment ground poor prognostic cause comes from as the alternating current 220V power lead does not have good earth, or the ground wire of power distributor do not connect, or the socket of power distributor is loosening causes the ground wire loose contact.
Comprehensive above the description, the hot-swappable damage of serial ports to have three: equipment has imperfect earth, the hot-swappable action of serial ports is arranged, the limit that the energy of hot-swappable formation bears greater than serial port circuit.
Fig. 2 shows the device connection diagram that is used to analyze according to the interface hot drawing method of testing of the embodiment of the invention.As shown in Figure 2, equipment 112 ground connection are good, equipment 132 and 152 imperfect earths, and equipment 112 is connected by Serial Port Line with 132.
Below in conjunction with accompanying drawing the principle according to the interface hot drawing method of testing of the embodiment of the invention is analyzed:
1) equipment connection description
The power lead of equipment 112 is connected on the power distributor 160, and the power lead of equipment 132 and equipment 152 is connected on the power distributor 170.
Here, equipment 112 can be assumed to be switch/router, equipment 132 is assumed to be computing machine, and equipment 152 is assumed to be other 1 computing machine, so that be described in the actual environment, computing machine is by the connection situation of serial ports configuration switch/router.
2) device interior is formed explanation
With equipment 112 is that example describes, to describe the ingredient of equipment.This ingredient is device housings 103, switching power circuit 109, serial port circuit 111, other motherboard circuits 110.
Switching power circuit 109 effects are to be power devices.Draw live wire 100, zero line 101, ground wire 102, be connected with power distributor.Wherein the junction of Y electric capacity 106 and Y electric capacity 107 is connected with ground wire 102, also is connected with device housings 103.
Other motherboard circuit 110 is the main circuit of equipment, and this circuit is connected with device housings 103.
To sum up describe, the junction of serial port circuit 110, Y electric capacity 106 and Y electric capacity 107, device housings 103, ground wire 102 link together, and above earth potential equates.
3) switching power circuit is formed explanation
With equipment 112 is that example describes, and its switching power circuit 109 is by forming as the lower part.
Draw live wire 100, zero line 101, ground wire 102, be connected with power distributor.
Fuse 105 is used for protection equipment usefulness, avoids equipment excess current to occur.
Y electric capacity 106, Y electric capacity 107 belong to the electric capacity of security regulations.Y electric capacity 106 is attempted by between live wire and the ground wire, and Y electric capacity 107 is attempted by between zero line and the ground wire.
X electric capacity 108 belongs to the electric capacity of security regulations, is attempted by between live wire and the zero line.
The subsequent conditioning circuit of switching power circuit and this patent are irrelevant, so do not repeat them here.
4) good equipment 112 its shell 103 voltage-to-ground explanations of ground connection
5) equipment 132 its shell 123 voltage-to-ground explanations of imperfect earth
Y electric capacity 126 and Y electric capacity 127 are connected across between live wire 120 and the zero line 121, and the live wire voltage-to-ground is 220V, and the zero line voltage-to-ground is 0, so the voltage difference between live wire and the zero line is 220V.Y electric capacity 126 is identical with Y electric capacity 127, so under ground wire 122 and the earth disconnection, the voltage of Y electric capacity 126 and Y electric capacity 127 junctions equals half of voltage difference between live wire and the zero line, i.e. 110V.
6) equipment 152 its shell 143 voltage-to-ground explanations of imperfect earth
With the equipment 132 of imperfect earth, its shell 143 voltage-to-grounds can reach 110V.
7) the said current dumping path explanation during Serial Port Line 190 plugs
The sheath voltage difference of equipment 112 and equipment 132 is 110V, and Serial Port Line 190 inserts moment, because of there is voltage difference in two equipment, so equipment 132 is to equipment 112 discharges.
The discharge approach is: ground wire 102 → power distributor 160 → the earth 180 of the shell 103 → equipment 112 of the serial port circuit 111 → equipment 112 of serial port circuit 131 → Serial Port Line 190 → equipment 112 of the shell 123 → equipment 132 of the energy → equipment 132 of the Y electric capacity 126 of equipment 132 and 127 storages of Y electric capacity.Specifically flow to shown in the broad-brush circuit among Fig. 2.
The discharge approach is: ground wire 102 → power distributor 160 → the earth 180 of the shell 103 → equipment 112 of the serial port circuit 111 → equipment 112 of serial port circuit 131 → Serial Port Line 190 → equipment 112 of the shell 123 → equipment 132 of the ground wire 122 → equipment 132 of ground wire 142 → power distributor 170 (its internal interface ground wire intercommunication) → equipment 132 of the energy → equipment 152 of the Y electric capacity 146 of equipment 152 and 147 storages of Y electric capacity.The concrete flow direction is denoted as shown in the broad-brush circuit as Fig. 2.
In like manner, if a plurality of equipment are arranged on the power distributor 170, then a plurality of equipment can be to equipment 112 discharges.
8) the maximum discharge current calculation specifications during Serial Port Line 190 plugs
The big I of maximum discharge current is calculated according to formula IMAX=C * U/t, and wherein IMAX is a maximum current, and unit is an ampere (A); C is an electric capacity, and unit is a farad (F); U is a voltage, and unit is a volt (V); T is the time, and unit is second (s).Can draw from this formula, capacitor C is big more, voltage U is big more, time t is more little, and then electric current is big more.
Maximum discharge current
IMAX1=(Y electric capacity 126+Y electric capacity 127) * 110V/t
So, total maximum discharge current
IMAX=IMAX1+IMAX2=(Y electric capacity 126+Y electric capacity 127) * 110V/t+
(Y electric capacity 146+Y electric capacity 147) * 110V/t
=(Y electric capacity 126+Y electric capacity 127+Y electric capacity 146+Y electric capacity 147) *
110V/t
=(equipment 132Y electric capacity+equipment 152Y electric capacity) * 110V/t
In like manner, if a plurality of equipment are arranged on the power distributor 170, then a plurality of equipment can be to equipment 112 discharges, its maximum discharge total current
IMAX=(the Y electric capacity summations of a plurality of equipment) * 110V/t
As seen, the size of discharge current is directly proportional with the Y capacitance size of equipment.Equipment is many more, and its Y electric capacity summation is big more, and discharge current is also big more.
9) cause during Serial Port Line 190 plugs serial ports to damage explanation
Each signal definition of Serial Port Line is isometric, but can't accomplish isometricly fully in the reality, because all can there be trueness error on the size, has some trickle differences in length like this.So when Serial Port Line inserts, have some signals to touch earlier method, apparatus, touch behind some signals.Each signal all may touch method, apparatus earlier in theory.Touch the signal wire discharge current maximum to method, apparatus earlier, worst case is that all discharge currents are all from this signal line passes.
If the GND signal of Serial Port Line is contact earlier, discharge current can not cause serial port circuit to damage, because GND is connected on the device housings usually, so discharge current can not pass through serial port circuit.
If other signals of Serial Port Line contact earlier, discharge current can arrive device housings again by behind the serial port circuit.
Illustrate with a serial ports cable signal wire TXD wherein contact earlier, the discharge current approach is TXD signal wire → equipment 112 serial port circuits → equipment 112 shells of equipment 132 shells → equipment 132 serial port circuits → Serial Port Line 190.
When the current limitation that discharge current can bear greater than serial port circuit, then the TXD signal wire of serial port circuit is damaged.And then serial ports is damaged; Same other signal wires are similar.
Comprehensive above the description can draw, and the hot-swappable energy source of serial ports is bad in equipment ground.The hot-swappable energy size of serial ports is directly proportional with the equipment epd, and maximum epd is 110V; The hot-swappable energy size of serial ports is directly proportional with the Y capacitance size of imperfect earth equipment; The hot-swappable energy of serial ports size is relevant with the number of imperfect earth equipment, and number of devices is many more, and energy is big more, and Y electric capacity can equal the Y electric capacity summation of multiple devices; It is because the hot-swappable meeting of serial ports causes discharge current that serial ports damages, and when electric current surpasses the serial port circuit ability to bear, just causes serial ports to damage.Every signal wire of Serial Port Line all may pass through maximum discharge current.
According to above-mentioned analysis, the present invention has constructed a kind of being used for equipment under test has been carried out destructive test under the ceiling capacity of hot plug, and the method and the device of the hot plugging of interface test that judges with the result of destructive test.
Fig. 3 shows the proving installation synoptic diagram of hot plugging of interface according to an embodiment of the invention, comprising: be connected in series in first electric capacity 302 and second electric capacity 303 between live wire 306 and the zero line 308; P-wire 304, an end of p-wire 304 are connected between first electric capacity 302 and second electric capacity 303, and the other end is used to connect the pin of interface to be measured.
Preferably, first electric capacity 302 and second electric capacity 303 are Y electric capacity, to prevent causing that electronic equipment leaks electricity or casing is charged, crisis personal safety and life.
Preferably, the resistance of first electric capacity 302 and second electric capacity 303 is 0.0047uF～0.1uF.
Here, being described as Y electric capacity: the AC power input is divided into 3 terminals: live wire (L)/zero line (N)/ground wire (G).Between live wire and the ground wire and between zero line and ground wire and the electric capacity that connects, generally be referred to as Y electric capacity.The position that these two Y electric capacity connect is relatively more crucial, must need meet the associated safety standard, in case cause that electronic equipment leaks electricity or casing is charged, jeopardizes personal safety and life easily.They all belong to safe electric capacity, thereby require the capacitance can not be bigger than normal, and withstand voltage must be higher.Generally speaking, be operated in semi-tropical machine, require earth leakage current can not surpass 0.7mA; Be operated in the temperate zone machine, require earth leakage current can not surpass 0.35mA.Therefore, the total volume of Y electric capacity generally all can not surpass 4700PF (472).
In the present embodiment, by being set in the proving installation of hot plugging of interface, an end is connected between first electric capacity and the zero line, the other end is used to connect the p-wire of the pin of interface to be measured, can realize each pin of interface on the p-wire of proving installation and the device to be measured is carried out contacting and opening operation of pre-determined number successively, each pin to device to be measured has carried out destructive testing respectively.Test mode according to this simulation, can under the hot plug energy of maximum, carry out the hot plug test by the signal wire to interface to be measured, and test result is accurate, testing efficiency is high, testing expense is lower, exist test result randomness bigger in the prior art thereby overcome, the inaccurate problem of test result.
Preferably, above-mentioned proving installation can also comprise: the 3rd electric capacity, and an end of the 3rd electric capacity is connected to live wire, and the other end is connected to zero line, and the 3rd electric capacity is used for discharging when proving installation cuts off the power supply.
Preferably, the 3rd electric capacity can be X electric capacity.
Here, to being described as of X electric capacity: electric capacity in parallel between live wire and zero line inhibition generally is referred to as X electric capacity.Because the position that this electric capacity connects is also relatively more crucial, need meet the associated safety standard equally.X electric capacity equally also belongs to one of safe electric capacity.According to actual needs, it is bigger than the appearance value of Y electric capacity that the appearance value of X electric capacity allows, but this moment must be at the two ends of X electric capacity safe resistance in parallel, and when being used to prevent the power lead plug, to cause power-line plug long charged owing to the charge and discharge process of this electric capacity.The safety standard regulation, when the machine power line among working was pulled out, in two seconds, the charged voltage (or above earth potential) in power-line plug two ends must be less than 30% of original rated operational voltage.
Preferably, above-mentioned proving installation can also comprise: indicating circuit, and an end of indicating circuit is connected to live wire, and the other end is connected to zero line, and indicating circuit is used to indicate proving installation to power on.
Preferably, in above-mentioned proving installation, interface can comprise following one of at least: serial ports, parallel port and RS485 interface.
Preferably, in above-mentioned proving installation, proving installation also comprises fuse, and wherein, fuse is connected between live wire and the 3rd electric capacity, is used for protection tester, avoids proving installation excess current to occur.
Preferably, in above-mentioned proving installation, proving installation also comprises power switch, and wherein, power switch is connected between live wire and the fuse, is used for powering on to proving installation.
Fig. 4 shows the proving installation synoptic diagram according to the hot plugging of interface of a preferred embodiment of the present invention.As shown in Figure 4; within the power distributor Right Border is proving installation (being also referred to as testing tool); wherein; live wire 401; zero line 402; ground wire 403 is inserted on the power distributor by power lead; ground wire 403 is unsettled in proving installation inside; being connected in series in Y electric capacity 407 between live wire and the zero line and 408 junction draws as p-wire 404 with lead; power switch 405 is used for powering on to proving installation, and fuse 406 is used for protection tester usefulness, avoids proving installation excess current to occur; X electric capacity 409 is used for discharging when proving installation cuts off the power supply, and indicator light circuit 410 is used to indicate power supply electrifying.
In the above embodiment of the present invention, power switch 405, fuse 406, X electric capacity 409 and indicator light circuit 410 are optionally.
Y electric capacity 407, Y electric capacity 408 belong to the electric capacity of security regulations.Y electric capacity 407 is attempted by between live wire and the ground wire, and Y electric capacity 408 is attempted by between zero line and the ground wire.X electric capacity 409 belongs to the electric capacity of security regulations, is attempted by between live wire and the zero line.
The equipment that the proving installation analogue ground is bad, p-wire 404 voltage-to-grounds of drawing are 110V.
The Y electric capacity 407 of proving installation and Y electric capacity 408 are used to simulate the Y electric capacity total volume of multiple devices, and here, the capacitance of Y electric capacity 407 and Y electric capacity 408 all can be 0.0047uF～0.1uF.Because the total volume of single device Y electric capacity generally all can not surpass 4700PF, thus the Y electric capacity summation=20*4700PF=94000PF=0.094UF of 20 equipment, less than 0.1UF.The capacitance of supposing Y electric capacity 407 and Y electric capacity 408 is 0.1uF, then can simulate the nearly Y electric capacity total volume of 20 equipment.
In addition, the present invention can also be so a kind of structure, and the difference of the apparatus structure among this structure and Fig. 3 is not comprise electric capacity 303 and zero line side 308.Fig. 5 shows the proving installation of the hot plugging of interface with above-mentioned this structure.As shown in Figure 5, the proving installation of hot plugging of interface comprises: first electric capacity 502, and the one end is connected with live wire 506; P-wire 504, the one end be connected at first electric capacity 502, the other end is used to connect the pin of interface to be measured.
Fig. 6 shows the process flow diagram according to the method for testing of the hot plugging of interface of the embodiment of the invention.As shown in Figure 6, the method for testing according to the hot plugging of interface of the embodiment of the invention specifically comprises the steps:
S602 powers on proving installation and device to be measured successively;
S604 carries out contacting and opening operation of pre-determined number successively with each pin of interface on the p-wire in the proving installation and the device to be measured;
S606 is configured device to be measured by interface, if configuration successful, then the hot-swappable test of interface is passed through.
In the present embodiment, by using the proving installation of hot plugging of interface, each pin of interface on the p-wire of proving installation and the device to be measured is carried out contacting and opening operation of pre-determined number successively, and each pin to device to be measured has carried out destructive testing respectively.Test mode according to this simulation, can under the hot plug energy of maximum, carry out the hot plug test by the signal wire to interface to be measured, and test result is accurate, testing efficiency is high, testing expense is lower, exist test result randomness bigger in the prior art thereby overcome, the inaccurate problem of test result.
Preferably, in above-mentioned method of testing, pre-determined number is 5-15 time.
Fig. 7 shows the device connection diagram when test interface is hot-swappable according to a preferred embodiment of the present invention.Under connection status as shown in Figure 7, specifically comprise the steps: according to the method for testing of hot plugging of interface of the present invention
1) proving installation 40 and switch/router 41 to be tested all are inserted on the power distributor 160, and power distributor ground connection is good;
2) proving installation 40 powers on;
3) switch/router 41 to be tested powers on;
4) with the p-wire 33 of proving installation 40, the operation that contacts/disconnect with each pin of the serial ports 45 of switch/router 41 successively.Preferably, each pin is carried out the operation of 10 contact/disconnections.
Be operating as example with what a serial ports cable signal wire TXD (also can be called the TXD pin) wherein contacted/disconnects.When signal wire TXD contacted with p-wire 33, discharge was by way of the ground wire 702 → power distributor 760 → the earth 780 of switch/router 41 of shell 703 → to be tested of switch/router 41 of serial port circuit 711 → to be tested of switch/router 41 that be the TXD signal wire → to be tested of energy → p-wire 33 → serial ports 45 of storing of the Y electric capacity 36 of proving installation 40 and Y electric capacity 37.Specifically flow to shown in the circuit that is labeled as overstriking among Fig. 7.
After more than operation is finished, switch/router 41 is configured,, judges that the hot-swappable test of switch/router is passed through as passing through the normal configuration switch of serial ports by computing machine.The hot-swap capabilities of switch/router is up to standard; Otherwise the hot-swappable test of judgement switch/router is not passed through.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
1) by hot-swappable proving installation of serial ports and method of testing are provided, the hot-swappable protective capability of serial ports that can objective inspection machine has guaranteed the reliability of equipment;
2) test result is accurate, and every signal of serial ports has all been done the strongest destructive testing;
3) testing efficiency height takes turns to get final product to every signal wire test one with proving installation, do not need repeatedly hot-swappable test;
4) testing expense is low, does not need large number quipments, also can not cause computing machine damage etc.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the proving installation of a hot plugging of interface is characterized in that, comprising:
Be connected in series in first electric capacity and second electric capacity between live wire and the zero line;
P-wire, an end of described p-wire are connected between described first electric capacity and described second electric capacity, and the other end is used to connect the pin of interface to be measured.
2. proving installation according to claim 1, it is characterized in that described proving installation also comprises: the 3rd electric capacity, an end of described the 3rd electric capacity is connected to described live wire, the other end is connected to described zero line, and described the 3rd electric capacity is used for discharging when described proving installation cuts off the power supply.
3. proving installation according to claim 1, it is characterized in that described proving installation also comprises: indicating circuit, an end of described indicating circuit is connected to described live wire, the other end is connected to described zero line, and described indicating circuit is used to indicate described proving installation to power on.
4. proving installation according to claim 1 is characterized in that, described interface comprise following one of at least: serial ports, parallel port and RS485 interface.
5. proving installation according to claim 1 is characterized in that, described first electric capacity and described second electric capacity are Y electric capacity, and wherein said Y electric capacity refers between live wire and the ground wire and in parallel electric capacity between zero line and ground wire.
6. proving installation according to claim 1 is characterized in that, the capacitance of described first electric capacity and described second electric capacity is 0.0047uF～0.1uF.
7. proving installation according to claim 1 is characterized in that described proving installation also comprises fuse, and wherein, described fuse is connected between described live wire and described the 3rd electric capacity.
8. proving installation according to claim 7 is characterized in that described proving installation also comprises power switch, and wherein, described power switch is connected between described live wire and the described fuse.
9. the method for testing based on the hot plugging of interface of each described proving installation among the claim 1-8 is characterized in that, comprising:
Proving installation and device to be measured are powered on successively;
Each pin of interface on p-wire in the described proving installation and the described device to be measured is carried out contacting and opening operation of pre-determined number successively;
By described interface described device to be measured is configured, if configuration successful, then the hot-swappable test of described interface is passed through.
10. method of testing according to claim 9 is characterized in that, described pre-determined number is 5-15 time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910242081A CN101739325A (en) | 2009-12-04 | 2009-12-04 | Device and method for testing hot plugging of interface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612786A (en) * | 2017-10-31 | 2018-01-19 | 上海斐讯数据通信技术有限公司 | A kind of method and system of test router |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200982990Y (en) * | 2006-12-15 | 2007-11-28 | 鸿富锦精密工业（深圳）有限公司 | USB testing device |
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- 2009-12-04 CN CN200910242081A patent/CN101739325A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200982990Y (en) * | 2006-12-15 | 2007-11-28 | 鸿富锦精密工业（深圳）有限公司 | USB testing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612786A (en) * | 2017-10-31 | 2018-01-19 | 上海斐讯数据通信技术有限公司 | A kind of method and system of test router |
| CN107612786B (en) * | 2017-10-31 | 2020-12-22 | 台州智奥通信设备有限公司 | Method and system for testing router |
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Application publication date: 20100616 |