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Intelligent low voltage detection far-distance power supply system

A low-voltage detection and power supply system technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of unsafe operators, unknown systems, and easy electric shocks, etc., and achieve a strong practical effect

Inactive Publication Date: 2006-12-27
GUANGDONG TELEPOWER TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such a long-distance power supply system does not detect the remote load. Regardless of whether the remote end exists or not, the system immediately sends a doubled high-voltage DC to the trunk line after power-on. When the power supply is unbalanced, the system does not know. In this way Installers are prone to electric shock during installation and maintenance, and there is no guarantee for the safety of operators

Method used

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  • Intelligent low voltage detection far-distance power supply system
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Embodiment Construction

[0023] Please refer to figure 2 , image 3 as well as Figure 10 , the intelligent low-voltage detection remote power supply system of the present invention includes a connected local switch power supply and a remote power supply, and the local switch power supply includes a local switch power supply unit, a remote supply switch power supply unit, a CPU for power supply control, and a current and voltage sampling circuit . The local switching power supply unit provides 5V low-voltage power supply for peripheral devices such as CPU at the local end through low-voltage conversion and filtering processing, and provides working voltage for the control chip of the remote power supply unit.

[0024] The feedback pin of the main chip of the remote power supply switching power supply unit is jointly controlled by the feedback voltage and the PWM voltage control signal output by the CPU, so that the remote power supply voltage can be continuously adjusted from 0V to ±155V. The curr...

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Abstract

The disclosed intelligent remote detection system for power supply comprises: a local switch power with a CPU and a sampling circuit to monitor remote voltage and current; and a connected remote power with a sine oscillating circuit, wherein the local sampling circuit converts the oscillating current into sine voltage to be detected by CPU for online ACK. This invention is security and reliable.

Description

【Technical field】 [0001] The invention relates to a power supply system, in particular to a remote power supply system for intelligent detection adopted by communication equipment and the like. 【Background technique】 [0002] Nowadays, many communication devices need to provide long-distance power supply, such as multiplying equipment, PHS station, etc. The general method used is to double the power supply voltage in order to reduce the current on the trunk line. However, maintenance personnel have hidden worries about high-voltage electric shock during installation and maintenance, and their safety cannot be guaranteed. How to provide a safe and reliable power supply method is a key technology that requires long-distance power supply equipment manufacturers to strive for breakthroughs. [0003] Such as figure 1 The principle block diagram of the existing long-distance power supply system is shown, in which the local end unit is composed of a group of switching power suppl...

Claims

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Application Information

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IPC IPC(8): H02J13/00H02J3/00
Inventor 傅纬球颜君志罗宇华
Owner GUANGDONG TELEPOWER TELECOM TECH
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