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Current detection method, current detection device and water meter

A current detection device and current detection technology are applied in the direction of measurement devices, current/voltage measurement, capacitance measurement, etc., which can solve the problems of complex implementation, low stability, and high power consumption, and achieve low power consumption, performance, and power consumption. The effect of less consumption

Pending Publication Date: 2020-09-29
湖南常德牌水表制造有限公司
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Problems solved by technology

[0004] In view of this, the present invention provides a current detection method, a current detection device and a water meter to solve the problems of complex implementation, low stability and high power consumption of the existing current detection method

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  • Current detection method, current detection device and water meter
  • Current detection method, current detection device and water meter
  • Current detection method, current detection device and water meter

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Embodiment Construction

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments produced by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. In addition, it should be noted that "the..." in the content of the specific embodiment only refers to the technical attributes or characteristics of the present invention.

[0049] The basic principle of the current detection method provided by the present invention is to use the discharge charge of the large-capacity capacitor connected in parallel to the output terminal of the lithium battery within a certain period of time, which is equal to the...

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Abstract

The invention provides a current detection method, a current detection device and a water meter, and aims to obtain the average current of a load in a detection time period by detecting the voltage change of a capacitor so as to represent the power consumption of the load. According to the current detection method provided by the invention, a current sampling and amplifying conditioning circuit and a detection mode switching control circuit are not needed, so that the problem of easy interference caused by weak signal detection is avoided, the problem of load voltage drop during mode switchingis also avoided, the introduced power consumption is low, and the performance of low power consumption of an electronic product is favorably improved.

Description

technical field [0001] The invention belongs to the technical field of current detection, and in particular relates to a current detection method, a current detection device and a water meter. Background technique [0002] The power consumption performance of electronic products has attracted more and more attention and attention from researchers and users of electronic products. Therefore, the power supply current of electronic products needs to be detected as a characteristic parameter of its power consumption. For example, in the existing smart water meter, in order to ensure that the product meets the low power consumption requirement when it leaves the factory, it is necessary to detect the battery power supply current of the electronic module in the smart water meter. [0003] figure 1 It is a schematic diagram of the main power supply circuit of the existing smart water meter. In order to improve the instantaneous current output capability, a large-capacity capacitor...

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Application Information

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IPC IPC(8): G01R19/00G01R27/26
CPCG01R19/003G01R27/2605
Inventor 刘华亮李怀卿黑阳超李建奇李建英杨民生
Owner 湖南常德牌水表制造有限公司
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