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A sampling circuit and monitoring equipment

A technology of sampling circuit and switching circuit, applied in the direction of protection against overcurrent, overload protection device, etc., can solve problems such as short circuit of positive and negative busbars

Active Publication Date: 2017-12-29
VERTIV CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a sampling circuit and monitoring equipment to solve the problem that the positive and negative busbars are short-circuited due to the contact between the metal shell of the internal contact and its own shell in the detection device for monitoring the positive and negative busbars in the prior art

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  • A sampling circuit and monitoring equipment
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  • A sampling circuit and monitoring equipment

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Embodiment Construction

[0028] In order to solve the problem in the prior art that the metal casing of the contact piece on the sampling circuit in the monitoring device contacts the metal casing of the monitoring device, which causes a short circuit between the positive and negative busbars of the communication system power supply, an electric circuit is provided in an embodiment of the present invention. The sampling circuit includes a switching circuit connected in series in the circuit, so that when the communication system power supply passes through the monitoring equipment and the positive and negative busbars are short-circuited, the switching circuit will be disconnected in time, thus avoiding The short circuit of the positive and negative bus bars will damage the sampling circuit board in the monitoring equipment and the electronic devices in the sampling circuit, and also ensure the safety of the power supply of the communication system.

[0029] The technical solutions of the present inven...

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Abstract

The embodiments of the invention provide a sampling circuit and a monitoring device. The sampling circuit comprises a switch circuit connected in series with the sampling circuit, such that when a power supply of a communication system passes through the monitoring device and generates positive and negative busbar short circuits, the switch circuit can be timely broken, the damage caused by the positive and negative busbar short circuits to a sampling circuit board and electronic devices in the sampling circuit can be prevented, and at the same time, the safety of the power supply of the communication system is also guaranteed.

Description

technical field [0001] The invention relates to the technical field of circuit design, in particular to a sampling circuit and monitoring equipment. Background technique [0002] At present, in the communication power supply system, the battery voltage sampling of the power supply busbar is usually sampled in a non-isolated manner, which can simplify the design of the auxiliary power supply and the sampling circuit, reduce the cost of the sampling circuit, and obtain a higher sampling rate. precision. [0003] However, if figure 1 As shown, the positive busbar in the current communication system is generally grounded, and the metal casing of the monitoring equipment is at the same potential as the positive busbar. The sampling circuit in the monitoring equipment is connected to the negative busbar and then grounded. In order to improve the electromagnetic compatibility, the monitoring Contacts with metal shells on the sampling circuit in the device (such as network ports, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/08G01R1/36
Inventor 李良尤志毅胡龙文王渭渭
Owner VERTIV CORP