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Parallel operation line failure detection device and system

A fault detection and fault detection point technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as the inability to quickly and accurately locate parallel lines, and achieve the effect of restoring normal operation and eliminating faults

Active Publication Date: 2014-08-13
HUAWEI DIGITAL POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of parallel operation of multiple racks in the prior art, when the parallel line between two racks fails, only one rack will send out an alarm, which makes it impossible to quickly and accurately locate the faulty parallel line problem, the embodiment of the present invention provides a parallel line fault detection device and system

Method used

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  • Parallel operation line failure detection device and system
  • Parallel operation line failure detection device and system
  • Parallel operation line failure detection device and system

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Experimental program
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Embodiment 1

[0028] like figure 2 As shown, the embodiment of the present invention provides a parallel line fault detection device, which includes: a first detection module 11 , a second detection module 12 and a control module 13 . Specifically, the first detection module 11 is connected to a first pin of the first port, and the second detection module 12 is connected to a second pin of the second port. figure 2 Among them, the point 11a represents the connection point between the first detection module 11 and the first pin, and the point 12a represents the connection point between the second detection module 12 and the second pin.

[0029]The first detection module 11 includes a first resistor R1 , a first voltage change detection circuit 111 , and a first switch circuit 112 . The first resistor R1 is connected in series between the first pin and the power supply VCC. The first voltage change detection circuit 111 is used for outputting a first switch control signal according to the...

Embodiment 2

[0042] In this embodiment, the first voltage detection circuit using a Zener tube is used as an example to describe the parallel line fault detection device according to the embodiment of the present invention in detail. like image 3 As shown, this embodiment provides a parallel line fault detection device, which includes: a first detection module 21 , a second detection module 22 and a control module 23 . image 3 Among them, the point 21a represents the connection point between the first detection module 21 and the first pin, and the point 22a represents the connection point between the second detection module 22 and the second pin.

[0043] The first detection module 21 includes a first resistor R1 , a first voltage change detection circuit 211 , and a first switch circuit 212 . The first resistor R1 is connected in series between the first pin and the power supply VCC. The first voltage change detection circuit 211 is used to output the first switch control signal accor...

Embodiment 3

[0056] like Figure 4 As shown, this embodiment provides a parallel line fault detection device, the first detection module 21 and control module 23 of the device are the same as the parallel line fault detection device in Embodiment 2, but the second detection module 32 is the same as the implementation The second detection module 22 in Example 2 is different. Specifically, the difference is that the second detection module 32 of the device of this embodiment further includes a second switch circuit 321, the input end of the second switch circuit 321 is connected to the second pin, and the output end of the second switch circuit 321 A second fault detection point 32b is provided. The second switch circuit 321 is used to control the level state of the second fault detection point 32b according to the voltage change of the second pin.

[0057] Specifically, the second switch circuit 321 includes a second transistor Q2, the base of the second transistor Q2 is connected to the ...

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Abstract

The present invention discloses an apparatus and a system for detecting faults on a parallel cable, and relates to the field of electronic device technologies. The apparatus includes a first detecting module, a second detecting module, and a control module. The first detecting module includes a first resistor connected in series between a first pin and a power supply, a first voltage change detection circuit connected to the first pin, and a first switch circuit; an output end of the first voltage change detection circuit is connected to an input end of the first switch circuit, and a first fault detection point is set on an output end of the first switch circuit; the second detecting module includes a second resistor connected in series between the second pin and the ground, and a second fault detection point is set on the output end of the second detecting module; and the control module sends an alarm signal according to change of the level state of the first fault detection point and the second fault detection point. The present invention detects the voltage change of the first pin and the second pin, and controls the level state of the first fault detection point and the second fault detection point according to the voltage change, thereby detecting the faulty parallel cable quickly and accurately.

Description

technical field [0001] The invention relates to the technical field of electronic equipment, in particular to a parallel line fault detection device and system. Background technique [0002] In the field of power supplies such as UPS (Uninterruptible Power Supply, uninterruptible power supply), frequency converters and the field of electrical equipment and instruments, there are often cases where multiple racks run in parallel. Rack parallel operation means that the parallel cable port (male) on one rack and the parallel cable port (female) on another rack are connected through parallel cables to realize the parallel connection between racks. Data exchange, so as to ensure the synchronization of the running status of the racks. While the racks are running in parallel, each rack needs to detect whether the parallel line connected to it is faulty through the parallel line fault detection circuit, so as to ensure the normal operation of the system. [0003] The parallel line ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
CPCG01R19/165G01R31/02G01R31/04G01R31/021G01R31/58
Inventor 吕艺行
Owner HUAWEI DIGITAL POWER TECH CO LTD
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