Terminal and system with function of multimeter

Abstract

The invention provides a terminal with function of a multimeter, which comprises: a positive meter pen interface, a negative meter pen interface, a first selecting switch, a front-end acquisition circurit, a multichannel simulation control circuit, an analog-to-digital converter, and a processor, wherein the positive meter pen interface is used for connecting a positive meter pen; the negative meter pen interface is used for connecting a negative meter pen; the first selecting switch is used for selecting the meter pen interface so as to be connected with the input end of the selected front-end acquisition circuit; the front-end acquisition circuit is used for acquiring circuit analog quantity to be measured; the multichannel simulation control circuit is used for converting the circuit analog quantity of the front-end acquisition circuit into a voltage signal; the analog-to-digital converter is used for converting an analog signal from the multichannel simulation control circuit intoa digital signal; and the processor is used for processing the signal output by the analog-to-digital converter so as to obtain the measurement result. The invention also provides a system formed by the terminal and the meter pens, which comprises the terminal and the two meter pens; and the meter pens can also be used as handwriting pens for the terminal.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a terminal and a system with a multimeter function. Background technique [0002] Nowadays, the mobile terminal represented by the mobile phone is developing more and more in the direction of diversified functions, and the processing capability of the mobile terminal is getting stronger and stronger, and has become an electronic device that people carry with them in daily life. [0003] At the same time, people often encounter some electronic equipment failures in their daily life. At this time, some testing and maintenance tools are needed. The most commonly used one is the multimeter. However, the commonly used electronic multimeter is relatively large and inconvenient. Portable, and the accuracy is not very high, usually only 3 to 5 digits of data can be read. In addition, the multimeter does not have the ability to save and process data. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0003] At the same time, people often encounter some electronic equipment failures in their daily life. At this time, some testing and maintenance tools are needed. The most commonly used one is the multimeter. However, the commonly used electronic multimeter is relatively large and inconvenient. Portable, and the accuracy is not very high, usually only 3 to 5 digits of data can be read

In addition, the multimeter does not have the ability to save and process data

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