CN116990725B - Cable in-place signal indication system and method - Google Patents
Cable in-place signal indication system and method Download PDFInfo
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- CN116990725B CN116990725B CN202311254189.2A CN202311254189A CN116990725B CN 116990725 B CN116990725 B CN 116990725B CN 202311254189 A CN202311254189 A CN 202311254189A CN 116990725 B CN116990725 B CN 116990725B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000010586 diagram Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/08—Duration or width modulation ; Duty cycle modulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
- G01R31/69—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board of terminals at the end of a cable or a wire harness; of plugs; of sockets, e.g. wall sockets or power sockets in appliances
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Cable Installation (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention provides a cable in-place signal indication system and a method, wherein the system comprises a control board and N components; the control panel comprises a management system, a first execution system and N first cable connectors; each component includes a second cable connector and a second actuation system; the first execution system, the first cable connector, the second cable connector and the second execution system are connected in a double-loop mode and are used for transmitting in-place signals and loop-back signals; the in-place signal and the loopback signal are PWM signals; in the first cable connector and the second cable connector, the connection pins for transmitting the bit signal and the loop-back signal are two pins in the maximum diagonal direction. The invention not only can efficiently and accurately detect whether the cable is inserted, but also can position whether the specific cable is inserted correctly in a multi-cable scene, and can normalize the cable and the matched cable connector, thereby reducing the cost of the cable scheme and having good expansibility.
Description
Technical Field
The invention relates to the technical field of high-speed cables, in particular to a cable in-place signal indication system and method.
Background
As the internal bus rates of storage devices and servers are higher and higher, low-cost PCBs (Printed Circuit Board, printed circuit boards) cannot support the transmission requirements of high-speed signals, and high-speed cables are increasingly used for transmitting high-speed signals.
The high-speed cable in-place signal is an indication signal for indicating whether the high-speed cable is in place or not and is correct, and the high-speed cable in-place signal relates to whether the storage equipment and the server can work normally or not. Therefore, the high-speed cable in-place signal is a very critical signal, and the accuracy of the signal must be ensured.
The existing cable in-place indication mainly adopts the following three modes:
(1) As shown in fig. 1, by means of single point grounding, indicating whether the cable has been accessed in place; however, to increase the signal density, the high-speed cable connector and the high-speed cable are both in a double-sided wiring form. In this case, when the single-point signal indicates that the cable is in place, it cannot correctly indicate that the cable is not plugged in when the situation occurs in which one side of the cable plug is plugged in but the other side is not plugged in.
(2) As shown in fig. 2, the cable in-place signal is enhanced by a single-point double-loop mode, so that whether the cable is in place or not can be accurately indicated. However, in a multi-cable scenario, it is not possible to distinguish whether the cable is plugged into the correct position.
(3) In order to ensure that the multi-cable scene cables are not misplaced, different cable lengths or different cable types are adopted for distinguishing. However, using different cable lengths or different cable types may cause a problem that the cables and the mating cable connectors are difficult to normalize, so that the cable schemes with optimal cost cannot be fully adopted, resulting in increased cost.
Disclosure of Invention
The invention aims to provide a cable in-place signal indication system and method, which are used for solving the problems of the three modes of the existing cable in-place indication.
The invention provides a cable in-place signal indication system which comprises a control board and N components, wherein the control board is connected with the N components; the control board comprises a management system, a first execution system and N first cable connectors, wherein the management system and the first execution system are connected, and the N first cable connectors are connected with the first execution system; each component includes a second cable connector and a second actuation system connected; the N first cable connectors are connected with the second cable connectors of the N parts in a one-to-one correspondence manner;
the first execution system, the first cable connector, the second cable connector and the second execution system are connected in a double-loop mode and are used for transmitting in-place signals and loop-back signals; the bit signal and the loop back signal are both PWM (Pulse width modulation ) signals;
in the first cable connector and the second cable connector, connection pins for transmitting an in-place signal and a loop-back signal are two pins in the maximum diagonal directions on the first cable connector and the second cable connector respectively.
Based on the cable in-place signal indication system, the invention also provides a cable in-place signal indication method, which comprises the following steps:
s1, confirming a cable configuration rule according to the type of a component, and storing the cable configuration rule in a management system;
s2, the management system issues a cable configuration rule to the first execution system; the first execution system generates an in-place signal according to the issued cable configuration rule;
s3, the in-place signal sequentially passes through the corresponding first cable connector, the cable and the second cable connector and enters the corresponding second execution system;
s4, the second execution system carries out frequency modulation processing on the in-place signal according to a frequency modulation processing strategy corresponding to the cable configuration rule to generate a loop-back signal;
s5, looping the loop-back signal back to the first execution system through the corresponding second cable connector, the cable and the first cable connector in sequence;
s6, the first execution system calculates the frequency and the duty ratio of the loop-back signal, and correspondingly stores the frequency and the duty ratio of the loop-back signal;
and S7, the management system reads the frequency and the duty ratio of the loop-back signal stored in the first execution system, and performs matching analysis on the frequency and the duty ratio of the loop-back signal, so that the cable in-place condition is judged.
Further, step S7 includes:
if the frequency and the duty ratio of the loop-back signal are not read, the cable of the corresponding component is not inserted;
if the frequency and the duty ratio of the loop-back signal are read, comparing whether the frequency and the duty ratio of the loop-back signal read are consistent with the frequency and the duty ratio stored correspondingly in advance or not:
if the two types of the cable are consistent, the cable is correctly positioned;
if the two cables are inconsistent, the cable is misplaced.
Further, the case that the cable is not inserted includes:
the first cable connector and/or the second cable connector are not inserted in place;
the first cable connector and/or the second cable connector is damaged;
and/or misplacement and/or damage of the cable.
Further, the case of the misplacement of the cable is the misplacement of the component.
Further, if the cable is not inserted and/or the cable is misplaced, an alarm is given.
Further, when a new component is replaced:
if the new component needs to be compatible with the existing old component, the frequency modulation processing strategy of the second execution system in the new component is the same as that of the old component;
if the new component is not compatible with the replacement old component, the second execution system in the new component adopts a new frequency modulation processing strategy; and synchronize cable configuration rules stored in the upgrade management system as new components are involved.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
the present invention configures the on-bit signal and the loop-back signal to the two pins in the maximum diagonal direction on the cable connector, and both the on-bit signal and the loop-back signal are implemented as PWM signals. Therefore, the invention realizes the cable in-place indication based on the PWM signals, can efficiently and accurately detect whether the cable is inserted, can position whether a specific cable is correctly inserted in a multi-cable scene, can normalize the cable and a matched cable connector, reduces the cost of the cable scheme, and has good expansibility.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly describe the drawings in the embodiments, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a single point grounding mode of a conventional cable in a bit indication.
Fig. 2 is a schematic diagram of a single-node two-wire loop mode of the existing cable in-place indication.
Fig. 3 is a schematic diagram of a cable presence signal indicating system according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of connection pins of an in-bit signal and a loopback signal according to an embodiment of the present invention.
Fig. 5 is a flowchart of a cable in-bit signal indicating method according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
As shown in fig. 3, the present embodiment proposes a cable in-place signal indicating system, which includes a control board and N components; the control board comprises a management system, a first execution system and N first cable connectors, wherein the management system and the first execution system are connected, and the N first cable connectors are connected with the first execution system; each component includes a second cable connector and a second actuation system connected; the N first cable connectors are connected with the second cable connectors of the N parts in a one-to-one correspondence manner;
the first execution system, the first cable connector, the second cable connector and the second execution system are connected in a double-loop mode and are used for transmitting in-place signals and loop-back signals; the in-place signal and the loopback signal are PWM signals;
in the first cable connector and the second cable connector, connection pins for transmitting an in-place signal and a loop-back signal are two pins in the maximum diagonal directions on the first cable connector and the second cable connector, respectively, as shown in fig. 4.
Based on the cable on-site signal indication system, a cable on-site signal indication method is realized, as shown in fig. 5, and specifically comprises the following steps:
s1, confirming a cable configuration rule according to the type of a component (a server and/or storage equipment), and storing the cable configuration rule in a management system; the cable configuration rule means that the components in the system should have corresponding cables (cable head, cable sequence, cable length, cable material, etc.) and cable connectors. For the subsequent processing, after confirming the cable configuration rule, a tuning policy corresponding to the cable configuration rule should be set for each component, and the correct result of the tuning policy should be stored in the management system in advance, and the tuning policy of each component is different, so as to distinguish.
S2, the management system issues a cable configuration rule to the first execution system; the first execution system generates an in-place signal according to the issued cable configuration rule;
s3, the in-place signal sequentially passes through the corresponding first cable connector, the cable and the second cable connector and enters the corresponding second execution system;
s4, the second execution system carries out frequency modulation processing on the in-place signal according to a frequency modulation processing strategy corresponding to the cable configuration rule to generate a loop-back signal;
s5, looping the loop-back signal back to the first execution system through the corresponding second cable connector, the cable and the first cable connector in sequence;
s6, the first execution system calculates the frequency and the duty ratio of the loop-back signal, and correspondingly stores the frequency and the duty ratio of the loop-back signal;
s7, the management system reads the frequency and the duty ratio of the loop-back signal stored in the first execution system, and performs matching analysis on the frequency and the duty ratio of the loop-back signal, so that the cable in-place condition is judged:
if the frequency and the duty ratio of the loop-back signal are not read, the cable of the corresponding component is not inserted, and an alarm is given; the condition that the cable is not inserted includes: the first cable connector and/or the second cable connector of the corresponding component are not inserted in place, the cables are misplaced and/or damaged, the first cable connector and/or the second cable connector are damaged, etc.;
if the frequency and the duty ratio of the loop-back signal are read, comparing whether the frequency and the duty ratio of the loop-back signal read are consistent with the frequency and the duty ratio stored in advance or not:
if the two types of the cable are consistent, the cable is correctly positioned, and the operation is not performed;
if the two types of the cables are inconsistent, the cable is misplaced, and an alarm is given; the case of misplacement of the cable includes misplacement of the component, and the like.
The specific abnormal scene analysis is as follows:
1. component misinsertion scenario
In a component misplacement scenario, if the inserted component is not one that is needed and is not compatible, then the second execution system in the component may have a different fm processing strategy. After the first execution system detects the frequency and the duty ratio of the loop-back signal, the management system can periodically read the frequency and the duty ratio of the loop-back signal from the first execution system, and can accurately identify and alarm by comparing the frequency and the duty ratio (the correct result of the frequency modulation processing strategy) stored in advance.
It should be noted that the components (servers and/or storage devices) are of a wide variety and the lifecycle may be long. When a new complete machine is developed, the existing components are supported, new components are compatible to be developed, and the compatibility of the new components and the old components is important to consider. For newly developed components:
if the existing old component is required to be compatible, the frequency modulation processing strategy of the second execution system on the newly developed component is the same as that of the old component;
if the system is a non-compatible alternative to the old component, the second execution system adopts a new frequency modulation processing strategy, and when the new development component is involved, the cable configuration rules stored in the management system need to be synchronously upgraded.
2. Cable misinsertion scene
In a cable misplug scene, the cable relates to a cable head, a cable sequence, a cable length, a cable material and the like. If the cable heads are not aligned, the cable heads cannot be inserted into the corresponding cable connectors; if the cable orders are different, the cable in-place signal indication can accurately identify and alarm.
3. Cable damage scenario
Under the cable damage scene, the on-site signal is damaged, and the cable on-site signal indication can accurately identify and alarm.
4. Scene with cable not inserted
As shown in fig. 4, the pins at the four corners of the first cable connector and the second cable connector are pin PINA1, pin pinn, pin PINB1 and pin PINBN respectively, and the two pins (pin PINA1 and pin PINBN) in the maximum diagonal directions of the first cable connector and the second cable connector are selected to transmit the bit signal prsnt_1 and the loop-back signal prsnt_2, so that as long as the cables are completely inserted and the connectors are locked in place, and meanwhile, the edge of the bit signal prsnt_1 and the edge of the loop-back signal prsnt_2 are contacted, a surface is formed by three points, so that the whole cable connector mating surface can be ensured to be inserted. The fact that the matching surface of the cable connector is inserted cannot be guaranteed due to the fact that any side is not inserted, the loop-back signal cannot be obtained, and an alarm that the cable is not inserted can be reported.
5. Cable connector damage scenario
Under the cable connector damage scene, the on-site signal is damaged, and the on-site signal indication of the cable can accurately identify and alarm.
From the above, it can be seen that the present invention configures the on-bit signal and the loop-back signal to the two pins in the maximum diagonal direction on the cable connector, and the on-bit signal and the loop-back signal are both implemented as PWM signals. Therefore, the invention realizes the cable in-place indication based on the PWM signals, can efficiently and accurately detect whether the cable is inserted, can position whether a specific cable is correctly inserted in a multi-cable scene, can normalize the cable and a matched cable connector, reduces the cost of the cable scheme, and has good expansibility.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The cable in-place signal indication method is characterized by being realized based on a cable in-place signal indication system; the cable in-place signal indication system comprises a control board and N components; the control board comprises a management system, a first execution system and N first cable connectors, wherein the management system and the first execution system are connected, and the N first cable connectors are connected with the first execution system; each component includes a second cable connector and a second actuation system connected; the N first cable connectors are connected with the second cable connectors of the N parts in a one-to-one correspondence manner;
the first execution system, the first cable connector, the second cable connector and the second execution system are connected in a double-loop mode and are used for transmitting in-place signals and loop-back signals; the in-place signal and the loopback signal are PWM signals;
the connection pins used for transmitting the in-place signals and the loopback signals in the first cable connector and the second cable connector are respectively two pins in the maximum diagonal direction on the first cable connector and the second cable connector;
the cable in-place signal indication method comprises the following steps:
s1, confirming a cable configuration rule according to the type of a component, and storing the cable configuration rule in a management system;
s2, the management system issues a cable configuration rule to the first execution system; the first execution system generates an in-place signal according to the issued cable configuration rule;
s3, the in-place signal sequentially passes through the corresponding first cable connector, the cable and the second cable connector and enters the corresponding second execution system;
s4, the second execution system carries out frequency modulation processing on the in-place signal according to a frequency modulation processing strategy corresponding to the cable configuration rule to generate a loop-back signal;
s5, looping the loop-back signal back to the first execution system through the corresponding second cable connector, the cable and the first cable connector in sequence;
s6, the first execution system calculates the frequency and the duty ratio of the loop-back signal, and correspondingly stores the frequency and the duty ratio of the loop-back signal;
and S7, the management system reads the frequency and the duty ratio of the loop-back signal stored in the first execution system, and performs matching analysis on the frequency and the duty ratio of the loop-back signal, so that the cable in-place condition is judged.
2. The cable presence signal indication method according to claim 1, wherein step S7 includes:
if the frequency and the duty ratio of the loop-back signal are not read, the cable of the corresponding component is not inserted;
if the frequency and the duty ratio of the loop-back signal are read, comparing whether the frequency and the duty ratio of the loop-back signal read are consistent with the frequency and the duty ratio stored correspondingly in advance or not:
if the two types of the cable are consistent, the cable is correctly positioned;
if the two cables are inconsistent, the cable is misplaced.
3. The cable in-place signal indicating method according to claim 2, wherein the case that the cable is not inserted includes:
the first cable connector and/or the second cable connector are not inserted in place;
the first cable connector and/or the second cable connector is damaged;
and/or misplacement and/or damage of the cable.
4. The method of claim 2, wherein the cable misinsertion condition is a component misinsertion.
5. The method of any one of claims 2-4, wherein an alarm is given if the cable is not plugged and/or if the cable is misplaced.
6. The cable in-place signal indicating method of claim 1, wherein when a new component is replaced:
if the new component needs to be compatible with the existing old component, the frequency modulation processing strategy of the second execution system in the new component is the same as that of the old component;
if the new component is not compatible with the replacement old component, the second execution system in the new component adopts a new frequency modulation processing strategy; and synchronize cable configuration rules stored in the upgrade management system as new components are involved.
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| CN116990725A (en) | 2023-11-03 |
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