A New White Box Test Method Applying to Watt-hour Meter Based on EEPROM Read and Write Data

Considering the problems that Black box testing method for watt-hour meter cannot implement branch path traversal of the watt-hour meter software, and can't provide EEPROM data error tolerance evaluation of the watt-hour meter, also including the fact that watt-hour meter data storage unit EEPROM preserves running parameters of watt-hour meters, this paper proposes a new type of watt-hour meter white-box testing method based on EEPROM read and write. The new test method rewrites the parameters in EEPROM, which can implement branch path traversal of the watt-hour meter software, and avoid the branches path missing of the black box test. At the same time, the new test method can realize the fault tolerance evaluation of watt-hour meter software. Through the construction and integration of the new test platform, the watt-hour meter software can be tested automatically by the white-box test method, thus the test efficiency is greatly improved. As this method is applicable to the reliability test of the watt-hour meter, it can obtain better economic benefits compared with the black box testing method. The implementation of the new method in this paper have a certain reference value as to improve the reliability and fault tolerance of the watt-hour meter.