Wireless electrical measuring instrument

Abstract

The invention discloses a wireless electrical parameter measuring instrument which is mainly composed of a core control and communication module, a power management module, an electrical parameter measuring module and a display / indicate and control module. The core control and communication module comprises a core controller circuit, a serial port and a universal serial bus (USB) communication circuit. The power management module serves as a power management circuit. The electrical parameter measuring module comprises a small scale electric quantity, current and power consumption measurement circuit, a large scale electric quantity, current and power consumption measurement circuit, a voltage measurement circuit and a protection circuit. The display / indicate and control module serves as a display / indicate and control circuit. The wireless electrical parameter measuring instrument enables a communication mode to be improved from old single local control display to wireless and wired modes to read data and simultaneously does not reduce original measuring functions.

Description

technical field [0001] The invention relates to the field of electric parameter measurement, in particular to an electric parameter measuring instrument based on wireless communication technology. Background technique [0002] Advanced measuring instruments have become a necessary condition for the development of electronic products and a top priority for the development of the electronics industry. The multimeter is used to measure various electrical parameters related to the circuit, such as current, voltage, etc., and is a commonly used measuring instrument. Most of the existing multimeters use wired local measurement control display to realize the measurement of local electrical parameters and display them on the local multimeter, and directly read them. To enable users to save measurement data for later acquisition and analysis, multimeters often incorporate a hold function that freezes the displayed value once a stable reading is detected. To activate the hold functi...

AI Technical Summary

Problems solved by technology

[0004] In some detection applications, it is often necessary to measure multiple electrical parameters at the same time. For example, in the process of battery performance detection, it is necessary to detect three parameters of voltage, current and power at the same time. Existing measuring instruments such as multimeters cannot realize this function.

In addition, the existing multimeter can only detect the magnitude of the electrical parameter at a certain moment in real time, but cannot display the change trend of the parameter within a period of time.

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