Intelligent power limitation device

A kind of electrical limiting and intelligent technology, which is applied in the direction of instruments, electrical components, circuit devices, etc., to relieve the pressure of use, save electricity, and improve work efficiency

Inactive Publication Date: 2018-11-27
SHANGHAI DIANJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose is to solve the monitoring and control of electricity consumption in existing student dormitories

Method used

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  • Intelligent power limitation device

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] According to one or more embodiments, such as figure 1 As shown, an intelligent limiter includes a single-chip microcomputer, a conversion circuit, a sampling circuit, a display circuit, a keyboard circuit and a power supply.

[0017] The sampling circuit has an analog signal input, a control signal input and an analog signal output. The purpose of this circuit is to receive an input voltage at a specified time and hold that voltage at the output until the next sampling begins. The sampling circuit usually consists of an analog switch, a holding capacitor and a non-inverting circuit with a unity gain of 1. Sampling works in one of the two states of sample state and hold state. In the sampling state, the switch is turned on, and it tracks the level change of the analog input signal as fast as possible until the hold signal arrives; in the hold state, the switch is turned off, and the tracking process stops, and it keeps on before the switch is turned off The instantan...

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PUM

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Abstract

The invention relates to an intelligent power limitation device. The intelligent power limitation device is characterized in that a sampling circuit has an analog signal input, a control signal inputand an analog signal output; the sampling circuit is composed of four Zener diodes, eight capacitors, three 3-terminal voltage regulator tubes and a 3P connection terminal; a conversion circuit comprises a DC conversion circuit and an AD conversion circuit; the DC conversion circuit converts the DC voltage having a fixed amplitude into a DC voltage having variable amplitude and polarity; and the AD conversion circuit converts the analog signal into a digital signal, and converts an analog quantity into a digital quantity, and before the A/D conversion, the input signal input to the A/D converter must be converted into a voltage signal by a sensor.

Description

technical field [0001] The invention belongs to the technical field of electric appliance control, in particular to an intelligent electric limiter. Background technique [0002] Patent document CN92231221.4 discloses an energy-saving limited electrical appliance consisting of a rectifier power supply, a control circuit and an overload detection circuit. The rectifier power supply is used as a detection power supply, and the time base circuit 555 is used as a relay J switch control circuit and an automatic recovery circuit. Input and output transformers as high current isolation. When the load power is overloaded, the power will be automatically cut off, and the power supply will be automatically restored tens of seconds after the power failure. If the overloaded part is not removed, the power will be cut off again after a few seconds, and so on until the excess load is removed, so as to achieve the purpose of saving electricity by limiting the power used by users. . [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/42G01R19/00
CPCH02H3/42G01R19/00
Inventor 王志强满博文王浩党超峰杨党强林星星
Owner SHANGHAI DIANJI UNIV
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