Metering chip reference voltage measurement device and method

Abstract

The invention provides a metering chip reference voltage measurement device and method. According to the method, a metering chip measurement circuit is electrically connected with an SOP-DIP converter. A metering chip to be measured is electrically connected on the surface of the SOP-DIP converter. The reference voltage value of the metering chip to be measured in the metering chip measurement circuit is read by using a universal meter. The difference value between the reference benchmark voltage value and the reference voltage value of the metering chip to be measured read by the universal meter is calculated and whether the difference value is within the allowable error value is judged so that the performance of the metering chip to be measured is monitored and batch testing of the metering chip can be realized. Batch testing of the core device, i.e. the metering chip, of the electric energy meter can be realized, and the performance of the metering chip can be monitored by detectingthe reference voltage value of the metering chip so as to guarantee the metering accuracy of the electric energy meter and maintain the vital interests of the user and the state grid.

Description

technical field [0001] The invention relates to the technical field of electric energy meter quality monitoring, in particular to a measuring device and method for measuring chip reference voltage. Background technique [0002] The smart energy meter is an important device for establishing a nationwide smart grid, and the accuracy of its energy measurement is directly related to the vital interests of users and the State Grid. In order to control and monitor the quality of the smart meter in real time during the production process, it is necessary to evaluate the performance indicators of the key components of the electric energy meter, and the metering chip, as the core component of the electric energy meter measurement circuit, directly affects the performance of the electric energy meter. Metering accuracy, its main performance index is the reference voltage in the A / D conversion process. At present, in the process of production and research and development, there is sti...

AI Technical Summary

Problems solved by technology

At present, in the process of production and research and development, there is still no device for testing the performance of the metering chip of the electric energy meter, so that the performance of the metering chip cannot be monitored during the production process of the electric meter, which will make the metering accuracy of the electric energy meter very high. Large uncertainty, which will affect the measurement error and consistency of batch products

At the same time, in the prior art, the test of the reference voltage of the metering chip of the electric energy meter needs to weld the metering chip to be tested into the test circuit, and carry out sampling inspection on the batch products. The metering chip once tested cannot be used again, nor can it be used for multiple metering chips for batch testing

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