Method for testing software fault-tolerant capability of intelligent ammeter based on EEPROM data reading and writing

Abstract

The invention discloses a method for automatically testing the fault-tolerant capability of reading and writing data stored in an EEPROM through an intelligent ammeter. Intelligent ammeter EEPROM data fault-tolerant automatic testing software, an intelligent ammeter EEPROM reading and writing device and an EEPROM additional design circuit of the intelligent ammeter to be tested are adopted in the method. The method comprises the steps that the intelligent ammeter EEPROM data fault-tolerant automatic testing software is connected with the intelligent ammeter EEPROM reading and writing device through an RS232 or a network interface, the intelligent ammeter EEPROM reading and writing device is connected with the intelligent ammeter to be tested through an I2C interface, EEPROM key storage data of the intelligent ammeter to be tested are rewritten by the intelligent ammeter EEPROM data fault-tolerant automatic testing software through the intelligent ammeter EEPROM reading and writing device, the operation state of the intelligent ammeter to be tested is detected after the data are rewritten, the rewritten data are then restored, the operation state of the intelligent ammeter to be tested is tested again, and according to detection results, a software processing mechanism of the intelligent ammeter to be tested under the condition that the EEPROM data are abnormal is evaluated.

Description

technical field [0001] The invention relates to an automatic testing method for fault-tolerant ability when an intelligent electric energy meter reads and writes data stored in an internal EEPROM, and belongs to the field of intelligent electric energy meter software testing. Background technique [0002] With the gradual advancement of the State Grid Corporation of China's power consumption information collection system construction project, more and more smart energy meters have been put into on-site operation. The existing operating data of the smart energy meter shows that the routine testing based on technical standards can ensure the supply quality of the smart energy meter to a certain extent, but it cannot rule out the hidden faults inherent in the smart energy meter, such as: abnormal power data, metering Most of these faults are software faults caused by insufficient fault tolerance of smart energy meters under typical on-site working conditions. Once they occur, t...

AI Technical Summary

Problems solved by technology

The energy meter software needs to exchange a large amount of data with the memory chip during operation. This data exchange may be disturbed under on-site conditions, resulting in data errors. If the energy meter software does not set a checksum for this type of data exchange The fault-tolerant mechanism will lead to abnormal operation data of the electric energy meter, resulting in abnormal power data, measurement error out-of-tolerance and other consequences

[0004] At present, there is no special automatic detection method for the detection of smart energy meters when the internal storage data is abnormal. Generally, it is only discovered by accident during various performance type tests. The probability of occurrence is relatively low and it is not easy to repeat. Now, it is impossible to effectively judge whether the processing mechanism of the electric energy meter software is perfect

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