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Micropower wireless acquisition and measurement device based on electricity taking from current loop and implementation method of device

A technology of micro-power wireless and measuring devices, which is applied in the direction of transmitting sensing components, signal transmission systems, instruments, etc. by using electric/magnetic devices, which can solve the problem of increasing construction costs, construction difficulty and construction time, and is not conducive to collecting measurement equipment data wirelessly Transmission and other issues, to achieve the effect of saving construction cost and construction time, saving construction cost and construction time, and reducing construction difficulty

Active Publication Date: 2013-01-30
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing acquisition and measurement equipment can realize wireless data transmission, but in terms of power supply, an external power supply is still required
This increases the construction cost, construction difficulty and construction time, which is not conducive to the acquisition and measurement equipment to achieve wireless data transmission

Method used

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  • Micropower wireless acquisition and measurement device based on electricity taking from current loop and implementation method of device
  • Micropower wireless acquisition and measurement device based on electricity taking from current loop and implementation method of device
  • Micropower wireless acquisition and measurement device based on electricity taking from current loop and implementation method of device

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Embodiment Construction

[0058] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0059] The minimum current of the current loop is only 4mA, while the normal working current of the entire acquisition and measurement device can reach 70mA, and the difference between the supply current and the working current is quite large. The short-term high current will cause a great impact on the entire power supply voltage, and the use of super capacitors can well buffer and reduce this impact. Supercapacitors can also store ample electrical energy during sleep to meet short-term high-current consumption after wake-up. The small current power supply cannot meet the working current of the micro control unit MCU during the initialization period just after power-on reset, and the measure of pre-stored energy through the super capacitor enables the entire power supply to meet the power supply of the micro control uni...

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Abstract

The invention belongs to the field of data acquisition and measurement of measurement systems, and relates to a micropower wireless acquisition and measurement device based on electricity taking from a current loop and an implementation method of the micropower wireless acquisition and measurement device. The implementation method is characterized in that the electricity of the current loop is taken as a power supply of the micropower wireless acquisition and measurement device; after acquiring the power, the micropower wireless acquisition and measurement device starts working, the current analog quantity of the current loop is converted into digital quantity by virtue of A / D (Analog-to-Digital) conversion, and then the digital quantity is transmitted to a master data acquisition station in a wireless way after being processed by a MCU (Microprogrammed Control Unit). According to the micropower wireless acquisition and measurement device and the implementation method, the way of taking the electricity from the current loop and the way of wireless transmission are combined, and a user can acquire and measure remote data without additional power wires and communication wires.

Description

technical field [0001] The invention relates to a device in the field of data acquisition and measurement and an implementation method thereof, in particular to a micro-power wireless acquisition and measurement device for taking power from a current loop and an implementation method thereof. Background technique [0002] At present, sensors such as humidity, pressure, and flow mostly use 4~20mA current loop to output measurement results. In the process of converting the current analog quantity of 4~20mA current loop into digital quantity, it is often necessary to install additional A / D conversion. Acquisition and measurement device, output in the form of digital signal after A / D conversion. However, there are two places where wiring may be involved in the additional A / D conversion acquisition and measurement device: power supply and digital signal output. On-site wiring increases construction difficulty, construction cost and construction time. At present, the existing ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/12G08C17/02
Inventor 李杰钟鸣王鹤郭炳庆田世明陈宋宋
Owner CHINA ELECTRIC POWER RES INST
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