Non-contact electricity meter

A watt-hour meter, non-contact technology, applied in the field of watt-hour meters, can solve the problems of the watt-hour meter not working normally, the watt-hour meter is cumbersome, and the hidden danger of fire. Effect

Inactive Publication Date: 2007-12-19
白在铭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a non-contact type watt-hour meter, so that there is no direct contact between the cable and the watt-hour meter, thereby overcoming the potential fire hazards, flood hazards, and electricity consumption of the watt-hour meter in the prior art. Disadvantages such as bulky meter, easy to be stolen, the meter cannot work normally at low voltage, and different sizes of meters are required for different current levels.

Method used

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing 1 to 4 the specific embodiment of the present invention is described in further detail:

[0025] As shown in Fig. 1 and Fig. 2, the present invention includes: a watt-hour meter housing 1, a bottom plate 2 at the back of the watt-hour meter housing 1, a protective cover 3 is arranged on the bottom plate 2, a hollow A transformer 4 with a hole, the hollow hole allows the cable 5 to pass through it, so as to measure the induced current flowing through the cable 5 . The front of the watt-hour meter housing 1 is a display screen 6, which shows the electric energy consumed by the electric appliance. As shown in FIG. 3 , a pulse line 7 and a power line 8 are arranged on the base plate 2 , and the pulse signal can be transmitted to other display devices at the far end through the pulse line 7 . As shown in Figure 4, an analog-to-digital chip 9, a switching power supply 10 and a microprocessor 11 connected to the analog-to-digital...

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Abstract

An electricity meter with no contact is prepared as arranging display screen at front surface of shell body; setting A / D conversion chip, switch power supply, microprocessor and communication chip in shell body; setting pulse line, power supply line and protection cover of mutual inductor on base plate of shell body and arranging inductor with ring shaped hole in said protection cover.

Description

technical field [0001] The present invention relates to a watt-hour meter, in particular to a non-contact watt-hour meter for measuring electricity consumption. Background technique [0002] The watt-hour meter is a measuring instrument widely used in homes, hotels, restaurants and all places that require electricity to measure electricity consumption. It is very important for regulating people's behavior of using electricity legally and safely. A traditional watt-hour meter includes: watch case, live wire and ground wire inlet and outlet, current coil, voltage coil, counter, display, etc. The traditional watt-hour meter has multiple contact points because the live wire and neutral wire of the strong current need to pass through the external terminal and the internal connection of the watt-hour meter, which brings hidden dangers to the use safety of the watt-hour meter. For example, the existing single-phase watt-hour meter has 4 contact terminals to connect between the hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R22/00
Inventor 白在铭
Owner 白在铭
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