JP5012486B2 - Simulated fault condition generator - Google Patents

Description

  The present invention relates to a simulated fault condition generating apparatus, and more particularly to a simulated fault condition generating apparatus that can generate a simulated fault condition that can actually occur in an external interface cable mounted on an information processing apparatus.

  Conventionally, in an information processing apparatus, since the amount of information to be handled is increased, information processing is distributed and executed. When information processing is performed by a plurality of information processing apparatuses, each information processing apparatus is connected by an external interface cable (hereinafter simply referred to as an interface cable) for information exchange.

  In a system in which a plurality of information processing apparatuses are connected by an interface cable, the interface cable may be partially disconnected or completely disconnected for some reason. When the interface cable is cut for some reason, the information processing apparatus needs to detect the disconnection and deal with it.

  In order to cope with the disconnection, it is necessary to cause the information processing apparatus to simulate the countermeasure by causing a pseudo disconnection (failure) in the interface cable. For this reason, in the past, as a method of artificially generating a break in the interface cable, a human has actually pulled out the interface cable. However, this method has a problem that a plurality of signals are cut at the same time, and the disconnection of a specific signal line cannot be reproduced. Although there is a method of actually cutting a part of the wire in the cable, it is not practical to actually cut a part of the cable and cut an internal signal because the cable is difficult to repair.

  Therefore, in recent years, a relay device is interposed between the devices, and pseudo open by an electrical high impedance state by the relay device or pseudo disconnection by a relay has been performed.

  For example, in the simulated fault generator shown in Patent Document 1, this device is interposed between a cable under test and a test machine, and connection terminals are connected to the cable under test and the test machine, respectively. Thus, assuming the various faults, the switching circuit in the pseudo fault generating device is operated, and the open (open) state and the short (short) state of the cable are generated in a pseudo manner.

JP-A-5-080103 (FIGS. 1 and 2)

  However, a failure that occurs in an interface cable connecting information processing apparatuses is less likely to immediately cause a disconnection or a short circuit, and there are more situations where the cable gradually breaks. For this reason, the apparatus described in Patent Document 1 that tests only the disconnection or short circuit of a cable using an electrical switch or a general opening / closing switch cannot test a failure that may actually occur in the cable. There was a point. In other words, in a conventional electrical pseudo high impedance state or a half-break due to a relay, a subtle variation in characteristic impedance such as actual line disconnection or an event such as chattering cannot be reproduced.

  An object of the present invention is to generate a pseudo failure situation that actually occurs in an interface cable connecting information processing apparatuses, and can be used to evaluate the reliability, availability, and usefulness of a system. It is to provide a simulated fault condition generation device.

A first form of the simulated fault condition generating apparatus that achieves the above object is to generate a simulated fault in an interface cable connected to an information processing apparatus. A signal input unit and a signal output unit are provided in the apparatus main body. In the apparatus main body, a first signal line connected to the signal input unit and a second signal line connected to the signal output unit are provided, and both are engaged by the engagement unit. In the part, by moving at least one of the first signal line and the second signal line while maintaining the engaged state with respect to the other by the actuator provided in the apparatus, the engaged state of both can be changed. A simulated fault condition generation device , wherein the first and second signal lines are conductive lines, and the engaging portion is a signal line width changing portion provided at a free end of the first signal line, and The signal line width connected to the signal line width change section is constant. Is composed of a Sawahen the actuator, the first and at least one of the second signal line, a pseudo fault condition generating apparatus characterized by moving in a direction perpendicular to the signal line width.

The second form of the simulated fault condition generating apparatus that achieves the above object is to generate a simulated fault in the interface cable connected to the information processing apparatus. The apparatus main body is provided with a signal input unit and a signal output unit. In the apparatus main body, a first signal line connected to the signal input unit and a second signal line connected to the signal output unit are provided, and both are engaged by the engagement unit. In the part, by moving at least one of the first signal line and the second signal line while maintaining the engaged state with respect to the other by the actuator provided in the apparatus, the engaged state of both can be changed. A simulated fault condition generation device, wherein the first and second signal lines are optical fiber lines, and the engaging portion abuts the free end face of the first signal line and the free end face of the second signal line. Configured, the actuator is A pseudo-fault condition generating device characterized in that at least one of the first and second signal lines is moved in a direction to change a distance between free end faces or a direction to change an area of an overlapping portion of the free end faces. .

In this case, a plurality of terminals are provided in each of the signal input unit and the signal output unit, a set of a plurality of first and second signal lines is provided in the apparatus body, and a plurality of first and second signals are provided by an actuator. The engagement state of the set of lines can be changed independently. In order to realize this, if the actuator is provided with a clamp mechanism that can be gripped or released with respect to each of the plurality of first and second signal line sets, the first gripped by the clamp mechanism is provided. And the engagement state of only the pair of the second signal lines can be changed.

  According to such a pseudo-fault condition generator, various disconnections that can actually occur in the interface cable by artificially changing the engagement state of the physical engagement portions of the first and second signal lines. In addition, it is possible to simulate a contact failure.

  Hereinafter, embodiments of the present invention will be described in detail based on specific examples with reference to the accompanying drawings.

  FIG. 1 shows an internal configuration of an embodiment of the simulated fault condition generation apparatus 10 when the interface cable 1 is a conductive wire. The simulated fault condition generating apparatus 10 of this embodiment generates a pseudo-fault that may occur in the interface cable 1 that connects the information processing apparatus 2A and the information processing apparatus 2B connected thereto, for example. For this reason, in the simulated fault condition generating apparatus 10, the input connector 3 is connected to the information processing apparatus 2A by the interface cable 1a having the connectors 13 and 15 at both ends. Similarly, the output connector 4 is connected to the information processing apparatus 2B by an interface cable 1b having connectors 14 and 16 at both ends.

  Inside the simulated fault condition generating apparatus 10 of this embodiment, three first signal lines 11 (conductive lines) connected to the input connector 3 with conductive wires 17, and connected to the output connector 4 with conductive wires 17, Three second signal lines 12 (conductive lines) that are respectively connected to and in contact with the first signal line 11 by the engaging portion 20, the actuator 5 that moves the first signal line 11, and the first signal line 11. The slide mechanism 7 is provided. Also, an embedded board 18 that controls the operation of the actuator 5 is provided inside the simulated fault condition generator 10.

  The actuator 5 includes a stepping motor 50, a rod 51, a slide block 52, a rail 53, and three clamp mechanisms 6 provided on the slide block 52. The slide block 52 is movably held by rails 53 provided at both ends thereof. The slide block 52 is coupled to the stepping motor 50 by a rod 51. When the stepping motor 50 is operated by a signal from the built-in board 18, the slide block 52 is guided by the rail 53 and moves in the longitudinal direction (axial direction) of the first signal line 11. The moving amount and moving direction of the slide block 52 are determined by the operation of the stepping motor 50.

  The clamp mechanism 6 provided on the slide block 52 is engaged with any one of the first signal lines 11, and whether the first signal line 11 is gripped by a signal from the built-in board 18. Or open. The first signal line 11 gripped by the clamp mechanism 6 is coupled to the slide block 52, and moves as the slide block 52 moves. On the other hand, the first signal line 11 opened by the clamp mechanism 6 is irrelevant to the operation of the slide block 52 and does not move even if the slide block 52 moves. A configuration example of the clamp mechanism 6 will be described later.

  The slide mechanism 7 includes a guide rod 70 and a holder 72, and the first signal line 11 penetrates the holder 72 so as to be slidable. When the first signal line 11 held by the clamp mechanism 6 is moved by the movement of the slide block 52, the slide mechanism 7 guides the moving direction of the first signal line 11 by the guide rod 70 and the holder 72.

  The number of the second signal lines 12 is the same as the number of the first signal lines 11 and is fixed inside the simulated fault condition generator 10. The tip of the second signal line 12 is bent into an L shape in the embodiment of FIG. The contact piece 22 is electrically connected to the distal end portion of the first signal line 11 at the engaging portion 20. In order to ensure the connection between the first signal line 11 and the second signal line 12, an urging force is applied to the second signal line 12 by an urging member such as a spring, and the contact piece 22 is moved to the first signal line 12. What is necessary is just to press-contact to the front-end | tip part of the signal wire | line 11. The first signal line 11 has a flat surface, and the tip of the flat surface has a tapered portion 21 in which the line width gradually becomes narrower in the engaging portion 20. As a result, the contact area between the first signal line 11 and the second signal line 12 gradually changes as the first signal line 11 moves by the actuator 5.

  FIG. 2A shows a configuration of the engaging portion 20 in which the first signal line 11 and the second signal line 12 of FIG. The shape of the two signal lines 12 is different from that of the embodiment shown in FIG. In the embodiment shown in FIG. 1, the cross section of the first signal line 11 is rectangular, and the tapered portion 21 of the first signal line 11 is a surface in which one side surface extends from the side surface of the first signal line 11. And the other side surface is linearly approaching one side surface. On the other hand, the first signal line 11 shown in FIG. 2A has a rectangular cross section, and its tip 21 has a shape in which both side surfaces approach each other linearly. In the embodiment shown in FIG. 1, the contact piece 22 of the second signal line 12 is bent in an L shape in the horizontal direction, but the second signal line 12 shown in FIG. The contact piece 22 is bent in the vertical direction from the second signal line 12.

  As shown in FIG. 1 and FIG. 2A, when the line width of the tapered portion 21 in the direction perpendicular to the axial direction of the first signal line 11 is linearly reduced, the actuator 5 causes the first signal line 11 to be reduced. Is moved at a constant speed in a direction away from the second signal line 12, the contact area of the contact piece 22 of the second signal line 12 with the tapered portion 21 of the first signal line 11 is linearly reduced. This state is indicated by reference numeral A1 in FIG. In the case where the transmission path is actually cut gradually, the impedance of the transmission path changes gradually, and here, the contact area between the tapered portion 21 and the contact piece 22 gradually decreases correspondingly. I am doing so.

  In general, a change in impedance in a high-frequency signal in a transmission path depends on a contact area between the first signal line 11 and the second signal line 12. Therefore, when the contact area of the second signal line 12 with respect to the tip 21 of the contact piece 22 changes linearly as indicated by reference numeral A1 in FIG. 2D, the impedance of the transmission line is as shown in FIG. It changes linearly as indicated by reference numeral Z1. This state shows a case where the actual transmission path is gradually disconnected.

  On the other hand, there may be a case where the impedance of the transmission line changes nonlinearly as indicated by reference numeral Z2 in FIG. This is a phenomenon that actually occurs due to chattering when a conductive wire is partially cut or a subtle change in contact resistance between cables. Assuming such a case, the contact area between the tapered portion 21 and the contact piece 22 may be changed as indicated by reference numeral A2 in FIG. 2D, so that the tapered portion 21 of the first signal line 11 is It may be formed in a shape as shown in FIG. FIG. 2C shows still another shape of the tapered portion 21 of the first signal line 11, and the line width decreases in a curved manner.

  In this way, by changing the line width of the tapered portion 21 of the first signal line 11 and the cross-sectional shape of the first signal line 11 in accordance with the assumed cutting condition of the interface cable, this pseudo failure situation The generation device 10 can artificially generate any failure situation. Further, by controlling the speed and operating time of the actuator 5 by the built-in board 18, it is possible to programmably control the moving speed and moving distance of the contact piece 22 with respect to the detail 21.

  Further, when there are a plurality of pairs of the first signal line 11 and the second signal line 12, it is not necessary to make the change in the line width of the tapered portion 21 of all the first signal lines 11 the same. For example, when the easiness of cutting differs depending on the position of each wire in the interface cable, the shape of the tapered portion 21 of each first signal line 11 can be changed according to the situation.

  FIG. 3A shows the configuration of an embodiment of the clamp mechanism 6 of FIG. The clamp mechanism 6 of this embodiment is installed on a slide block 52 and a support base 60 on which the first signal line 11 is placed, a solenoid 61 provided on the side of the support base 60, and a solenoid 61 The plunger 62 is supported by the spring 63, and the clamp lever 64 is provided in a direction perpendicular to the tip of the plunger 62. When the solenoid 61 is not energized, the clamp lever 64 is located away from the upper surface of the first signal line 11 as shown in FIG. In this state, even if the slide block 52 moves, the first signal line 11 does not move.

  FIG. 3B shows a state where the solenoid 61 of the clamp mechanism 6 of FIG. 3A is energized. When the solenoid 61 is energized, the plunger 62 is drawn into the solenoid 61 against the biasing force of the spring 63. As a result, the clamp lever 64 moves in the direction of the first signal line 11 and the first signal line 11 is gripped by the clamp lever 64. In the state of FIG. 3B, the slide block 52 and the first signal line 11 are coupled by the clamp mechanism 6. Therefore, when the slide block 52 moves, the first signal line 11 moves accordingly. To do.

  Selection of a solenoid to be energized, movement distance of the actuator, or speed control can be controlled by a signal from the built-in board 18 shown in FIG.

  FIG. 3C shows the configuration of another embodiment of the clamp mechanism 6 of FIG. The clamp mechanism 6 of this embodiment is installed on a slide block 52 and has a support base 60 on which the first signal line 11 is placed, a rotary shaft 65 projecting on the side surface in the axial direction of the support base 60, and a rotation Two clamp levers 66 whose central portions are rotatably supported on the shaft 66, and clampers attached to the free ends of the two clamp levers 66 on the first signal line 11 side via respective rotary shafts 66A. 67, a magnetic body portion 69 formed at the free end of the two clamp levers 66 on the slide block 52 side, and an electromagnet 68 provided on the side surface of the support base 60 facing the magnetic body portion 69. . In addition, when the whole clamp lever 66 is comprised with a magnetic body, it is not necessary to provide the magnetic body part 69 in the clamp lever 66 purposely. Further, it is assumed that the clamp lever 66 is biased by a spring (not shown) attached to the rotating shaft 65 and is normally opened so that the clamper 67 does not grip the first signal line 11.

  In a state where the electromagnet 68 is not energized, the clamp lever 66 is located at a position where the clamper 67 is separated from the side surface of the first signal line 11 by the biasing force of the spring, as shown in FIG. In this state, even if the slide block 52 moves, the first signal line 11 does not move. FIG. 3D shows a state where the electromagnet 68 of the clamp mechanism 6 of FIG. 3C is energized. When the electromagnet 68 is energized, the magnetic body portion 69 of the clamp lever 66 is attracted to the electromagnet 68, the clamper 67 is closed, and the clamper 67 grips the first signal line 11 from both sides. In this state, since the slide block 52 and the first signal line 11 are coupled by the clamp mechanism 6, when the slide block 52 moves, the first signal line 11 also moves accordingly.

  The clamp mechanism 6 only needs to fix the first signal line 11 to the slide block 52 by a signal from the built-in board 18, so the configuration is not limited to these embodiments, and various configurations are possible. It is.

  FIG. 4A shows a configuration of an embodiment of the slide mechanism 7 of the first signal line 11. The slide mechanism 7 of this embodiment includes a guide rod 70 and a holder 72 having a through hole 71 provided at an end of the guide rod 70. The cross-sectional shape of the through hole 71 is the same shape that is slightly larger than the cross-sectional shape of the first signal line 11, and the first signal line 11 is inserted into the through hole 71 of the holder 72. The first signal line 11 shown in this embodiment is provided with a tapered portion 21 having a shape different from that of the first signal line 11 described above. It should be noted that the shape of the tapered portion 21 used in the slide mechanism shown in FIG. The first signal line 11 inserted through the through hole 71 of the holder 72 is movable along the guide rod 70.

  FIG. 4B shows a configuration of another embodiment of the slide mechanism 7 of the first signal line 11. The slide mechanism 7 of this embodiment is composed of a guide rod 70 in which a groove 73 is formed. The cross-sectional shape of the groove 73 is the same shape that is slightly larger than the cross-sectional shape of the first signal line 11, and the first signal line 11 is inserted into the groove 73. Note that the depth of the groove 73 may be smaller than the thickness of the first signal line 11. The first signal line 11 shown in this embodiment is provided with a tapered portion 21 having a shape different from that of the first signal line 11 described above. In the tapered portion 21 of this embodiment, the line width is gradually reduced. As in FIG. 4A, the shape of the tip 21 used in the slide mechanism 7 in FIG. 4B is arbitrary. The first signal line 11 inserted into the groove 73 is movable along the groove 73.

  In the embodiment described above, the configuration of the simulated fault condition generator 10 when the interface cable 1 is a conductive wire has been described. On the other hand, when the interface cable is an optical fiber line, the simulated fault condition generation apparatus 10 replaces a part of the member inside the apparatus with a member for an optical fiber line, thereby damaging the optical fiber line cable. Can also be verified in a pseudo manner.

  FIG. 5A shows the internal configuration of one embodiment of the simulated fault condition generating apparatus 10 when the interface cable is an optical fiber line. When the interface cable is the optical fiber line 1L, the connectors 13L and 15L at both ends of the optical fiber line 1La and the optical connectors 14L and 16L at both ends of the optical fiber line 1Lb are optical connectors. Therefore, in this embodiment, the input connector 3 and the output connector 4 of the simulated fault condition generating apparatus 10 shown in FIG. 1 are replaced with optical connectors 3L and 4L, respectively. Of course, in addition to the input connector 3 and the output connector 4, the simulated fault condition generation apparatus 10 may be provided with optical connectors 3L and 4L.

  In addition, the first and second signal lines 11 and 12 which are conductive lines are exchanged for the first optical fiber line 11L and the second optical fiber line 12L connected to the optical connectors 3L and 4L. At this time, if the clamp mechanism 6 and the slide mechanism 7 are compatible with the first optical fiber line 11L, the clamp mechanism 6 and the slide mechanism 7 shown in FIG. If the shapes of the first optical fiber line 11L and the first optical fiber line 11L do not match, the clamp mechanism 6 and the slide mechanism 7 are changed to match the shape of the first optical fiber line 11L. In addition, a holding frame 23 is provided on the second optical fiber line 12L side to match the end face of the second optical fiber line 12L with the end face of the first optical fiber line 11L. If a holding frame is also required on the first optical fiber line 11L side, it is added.

  In the simulated fault condition generating device 10 for an optical fiber line configured as described above, the end face of the first optical fiber line 11L and the end face of the second optical fiber line 12L in the engaging portion 20 are as shown in FIG. As shown in FIG. In this state, when the first optical fiber line 11L coupled to the slide block 52 by the clamp mechanism 6 is moved in the direction of the arrow shown in FIG. 5B by the actuator 5, as shown in FIG. 5C. In addition, the end face of the first optical fiber line 11L moves away from the end face of the second optical fiber line 12L, and the amount of light transmitted or attenuated from the first optical fiber line 11L to the second optical fiber line 12L is reduced. It is possible to verify the cutting of the fiber line.

  FIG. 6A shows the configuration of another embodiment of the simulated fault condition generating apparatus 10 when the interface cable is an optical fiber line. The simulated fault condition generating apparatus 10 of this embodiment includes the simulated fault condition generating apparatus 10 described with reference to FIG. 5A, the end face of the first optical fiber line 11L and the second optical fiber line 12L in the engaging portion 20. How to face the end face of the is different. Therefore, here, the same reference numerals are given to the components described with reference to FIG.

  In the simulated fault condition generation device 10 described with reference to FIG. 5A, the end surface of the first optical fiber line 11L and the end surface of the second optical fiber line 12L in the engaging portion 20 are the first optical fiber line 11L. It was opposed to the horizontal direction with respect to the moving direction. On the other hand, in the simulated fault condition generating apparatus 10 shown in FIG. 6A, the end surface of the first optical fiber line 11L and the end surface of the second optical fiber line 12L in the engaging portion 20 are the first one. Opposite to the moving direction of the optical fiber line 11L in the vertical direction. This state is shown in FIG. If a frame or the like for holding the optical fiber line is necessary to achieve this state, it is added.

  When the first optical fiber 11L coupled to the slide block 52 by the clamp mechanism 6 is moved in the direction of the arrow by the actuator 5 in the state shown in FIG. 6B, as shown in FIG. In addition, the overlapping portion of the end face of the first optical fiber line 11L gradually decreases with respect to the end face of the second optical fiber line 12L. Accordingly, it is possible to verify the attenuation of the amount of light transmitted from the first optical fiber line 11L to the second optical fiber line 12L and the cutting of the optical fiber line.

  As described above, even when the interface cable is an optical fiber line, the intensity of the light transmitted through the optical fiber line can be increased by the programmable movement of the actuator only by making a slight change to the internal configuration of the simulated fault condition generation device 10. It can be varied and a reduction close to the actual breakage of the optical fiber line can be reproduced.

  Further, the simulated fault condition generation apparatus 10 of the above-described embodiment can repeatedly cause a fault condition, and has an effect of improving the quality of the information processing apparatus. In addition, the interface can be easily extended to other shapes, and the physical phenomenon at the time of actual failure can be reproduced. Furthermore, the present invention can be applied to both a conductive wire and an optical fiber wire, the speed at which connection, half-breaking, and breakage can be adjusted, and stepwise half-cutting is possible.

  The present invention has been described in detail with particular reference to preferred embodiments thereof. For easy understanding of the present invention, specific embodiments of the present invention will be described below.

(Supplementary note 1) A pseudo-fault condition generation device that pseudo-generates a fault of an interface cable connected to an information processing device,
A signal input unit and a signal output unit provided in the apparatus body;
A first signal line connected to the signal input unit in the apparatus body;
A second signal line connected to the signal output unit in the apparatus body and engageable with the first signal line;
An actuator that changes an engagement state between the first signal line and the second signal line by relatively moving the first signal line and the second signal line; A device for generating a simulated fault condition.
(Supplementary Note 2) Each of the signal input unit and the signal output unit includes a plurality of terminals, and a plurality of sets of first and second signal lines are provided in the apparatus body.
The simulated fault condition generating apparatus according to appendix 1, wherein the actuator can independently change the engagement state of the plurality of first and second signal line pairs.
(Additional remark 3) The said actuator is provided with the clamp mechanism which can be hold | gripped or open | released with respect to each of the group of these 1st and 2nd signal lines, and was clamped by this clamp mechanism The simulated fault condition generating apparatus according to appendix 2, wherein the engagement state of only the first and second signal line pairs can be changed.
(Supplementary Note 4) The first and second signal lines are conductive lines,
The engaging portion includes a signal line width changing portion provided at a free end of the first signal line, and a contact piece having a constant signal line width connected to the signal line width changing portion. ,
4. The simulated fault condition generator according to any one of appendices 1 to 3, wherein the actuator moves at least one of the first and second signal lines in a direction perpendicular to the signal line width.
(Supplementary Note 5) The first and second signal lines are optical fiber lines,
The engaging portion is configured to abut the free end surface of the first signal line and the free end surface of the second signal line,
The actuator moves at least one of the first and second signal lines in a direction for changing a distance between the free end faces or a direction for changing an area of an overlapping portion of the free end faces. The simulated fault condition generator according to any one of appendices 1 to 3.

(Supplementary note 6) The supplementary note, wherein the first signal line has a rectangular cross section and is connected to the first signal line in a state where the contact piece of the second signal line is energized. 4. The simulated fault condition generation device according to 4.
(Supplementary note 7) The pseudo-fault condition generating device according to supplementary note 4, wherein the signal line width of the signal line width changing portion changes linearly.
(Supplementary note 8) The pseudo-fault condition generating device according to supplementary note 4, wherein the signal line width of the signal line width changing portion changes while increasing or decreasing.
(Supplementary note 9) The pseudo-fault condition generating device according to supplementary note 4, wherein the signal line width of the signal line width changing portion changes stepwise.
(Supplementary Note 10) The clamp mechanism is a support base on which the first signal line is placed, a solenoid provided on the side of the support base, a spring provided inside the solenoid, and a state of being biased by the spring The plunger held by the solenoid, and a clamp lever provided at the tip of the plunger,
Note that when the solenoid is energized, the plunger is immersed in the solenoid against the biasing force of the spring, and the clamp lever fixes the first signal line on the support base. 3. The simulated fault condition generating device according to 3.

(Supplementary Note 11) The clamp mechanism includes a support base on which the first signal line is placed, a rotary shaft projecting on one surface of the support signal in the longitudinal direction of the first signal line, and a tip end portion of the support base. A pair of clamp levers located on both sides of one signal line, whose central part is pivotally supported by the rotating shaft, and whose base part is located on both sides of the support base, on both sides of the support base; An electromagnet provided opposite to the base of the clamp lever,
The supplementary note 3 is characterized in that when the electromagnet is energized, the tip of the clamp lever clamps both sides of the first signal line to fix the first signal line on the support base. Simulated fault condition generator.
(Supplementary Note 12) A slide mechanism is further provided for moving at least one of the first and second signal lines while maintaining an engaged state with respect to the other.
Any one of Supplementary notes 1 to 11, wherein the slide mechanism includes a holder for inserting and holding at least one of the first and second signal lines, and a guide rod connected to the holder. The simulated fault condition generator according to the item.
(Supplementary Note 13) A slide mechanism is further provided for moving at least one of the first and second signal lines while maintaining an engaged state with respect to the other.
12. The pseudo failure according to any one of appendices 1 to 11, wherein the slide mechanism includes a guide rod provided with a groove for slidingly holding at least one of the first and second signal lines. Status generator.
(Supplementary Note 14) The actuator includes a slide block to which at least one clamp mechanism is attached, a rail for moving the slide block, and a motor connected to the slide block via a rod. The simulated fault condition generating device according to supplementary note 3, characterized by:
(Supplementary note 15) The simulated fault condition generating device according to supplementary note 14, wherein the motor is a stepping motor.

(Supplementary Note 16) As the signal input part and the signal output part, there are provided two types of connectors, that is, an electrical connector in which conductive connection pins protrude and an optical connector for an optical fiber line,
At the time of failure test of the interface cable for electrical signals, the first signal line and the second signal line are connected to the electrical connector,
4. The occurrence of a pseudo-fault condition according to appendix 3, wherein a first signal line and a second signal line made of an optical fiber line are connected to the optical connector during a damage test of the interface cable using the optical fiber line. apparatus.
(Additional remark 17) As said signal input part and said signal output part, any one type of connector of the electrical connector in which the conductive connection pin protruded, and the optical connector for optical fiber wires came to be attached. And
At the time of a failure test of the interface cable for electrical signals, the electrical connector is attached as the signal input part and the signal output part, and the first signal line and the second signal line are connected to the attached connector,
At the time of the damage test of the interface cable using the optical fiber line, an optical connector made of an optical fiber line is attached as the signal input part and the signal output part, and the first signal line made of the optical fiber line and the second are attached to the attached connector. The simulated fault condition generating device according to appendix 3, wherein the signal line is connected.
(Supplementary note 18) The simulated fault condition generation device according to supplementary note 1,
The first signal line and the second signal line are in contact with each other in an engaged state,
At least one tip portion of the first signal line or the second signal line is moved in accordance with relative movement between the first signal line and the second signal line by the actuator. An apparatus for generating a simulated fault condition, characterized in that a contact area between a signal line and the second signal line is changed.

It is a block diagram which shows the internal structure of one Example of the simulated fault condition generation apparatus of this invention when an interface cable is a conductive wire. (A) is the elements on larger scale which show the structure of one Example of the engaging part of the 1st and 2nd signal wire | line of FIG. 1, (b) is the engagement of the 1st and 2nd signal wire | line of FIG. The top view which shows the structure of another Example of a part, (c) is a top view which shows the structure of another Example of the engaging part of the 1st and 2nd signal wire | line of FIG. 1, (d) is the 1st The diagram which shows the change of the contact area with time when one signal line is moved in the engaging part of 1 and the 2nd signal line, (e) is in the engaging part of the 1st and 2nd signal line It is a diagram which shows the change of the characteristic impedance when one signal line is moved with time. (A) is the elements on larger scale which show the structure of one Example of the clamp mechanism of FIG. 1, (b) is the elements on larger scale which show operation | movement of the clamp mechanism of (a), (c) is the clamp mechanism of FIG. FIG. 7D is a partially enlarged cross-sectional view showing the configuration of another embodiment of the present invention, and FIG. (A) is an assembly perspective view which shows the structure of one Example of the slide mechanism of a 1st signal wire | line, (b) is an assembly perspective view which shows the structure of another Example of the slide mechanism of a 1st signal wire | line. . (A) is a block diagram which shows the structure of one Example of the simulated fault condition generation apparatus of this invention when an interface cable is an optical fiber line, (b) is a partially expanded engagement part of (a). (C) is a partially enlarged plan view showing the operation of the optical fiber line in the engaging portion of (b). (A) is a block diagram which shows the structure of another Example of the simulated fault condition generation apparatus of this invention when an interface cable is an optical fiber line, (b) is a part of engagement part of (a). The expanded partial expanded side view, (c) is the partial expanded side view which shows operation | movement of the optical fiber wire in the engaging part of (b).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Interface cable 1L Optical fiber line 3 Input connector 4 Output connector 5 Actuator 6 Clamp mechanism 7 Slide mechanism 10 Pseudo fault condition generator 11 1st signal line 12 2nd signal line 17 Conductive wire 18 Assembly board 20 Engagement part 21 Tip 22 Contact piece 23 Holding frame 52 Slide block 53 Rail

Claims (4)

A pseudo-fault condition generating device that pseudo-generates a fault in an interface cable connected to an information processing device,
A signal input unit and a signal output unit provided in the apparatus body;
A first signal line connected to the signal input unit in the apparatus body;
A second signal line connected to the signal output unit in the apparatus main body and engageable with the first signal line at an engaging unit ;
An actuator that changes the engagement state between the first signal line and the second signal line by relatively moving the first signal line and the second signal line;
The first and second signal lines are conductive lines;
The engaging portion includes a signal line width changing portion provided at a free end of the first signal line, and a contact piece having a constant signal line width connected to the signal line width changing portion. ,
The pseudo-fault condition generating apparatus , wherein the actuator moves at least one of the first and second signal lines in a direction perpendicular to the signal line width . A pseudo-fault condition generating device that pseudo-generates a fault in an interface cable connected to an information processing device,
A signal input unit and a signal output unit provided in the apparatus body;
A first signal line connected to the signal input unit in the apparatus body;
A second signal line connected to the signal output unit in the apparatus main body and engageable with the first signal line at an engaging unit ;
An actuator that changes the engagement state between the first signal line and the second signal line by relatively moving the first signal line and the second signal line;
The first and second signal lines are optical fiber lines;
The engaging portion is configured to abut the free end surface of the first signal line and the free end surface of the second signal line,
The actuator moves at least one of the first and second signal lines in a direction for changing a distance between the free end faces or a direction for changing an area of an overlapping portion of the free end faces. Simulated fault condition generator. Each of the signal input unit and the signal output unit includes a plurality of terminals, and a plurality of sets of first and second signal lines are provided in the apparatus main body,
3. The simulated fault condition generating apparatus according to claim 1, wherein the actuator can independently change the engagement state of the plurality of first and second signal line sets. The actuator is provided with a clamp mechanism that can be gripped or released with respect to each of the plurality of sets of the first and second signal lines, and the first and first gripped by the clamp mechanism. 4. The simulated fault condition generating apparatus according to claim 3 , wherein the engagement state of only two signal line sets can be changed.

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