Measuring Instruments, Weighing Software Quality Analysis And Testing,

This article is combined by the composing of metrology technology specifications of《General requirements of Weighing Instruments》. At present, we often read or watch such reports, getting verification certificate in a manipulated way for using the bug of controlled software in a measuring instruments, fraud using measuring instruments in the way for leaks of software's or hardware's design. In recent years, taxi meters, petrol dispensers, and electronic pricing scales, have been complained more and more for their fraud using. These complaint cases show the two reasons:one is the owner of these metrology instruments want to get more profit, the other is comparatively to the development of measuring instruments industry, the standards and specifications of metrology instruments are too outdated to obeying. The item is for the lack of legal control in metrology instruments software and the blank of technology specifications. With analysis and testing for the quality of metrology instruments, we want to explored and find out which is the key specification and main contents for metrology standards for metrology software, especially for electronic pricing scales.First, we collected and studied a lot of documents of metrology instruments software from home and abroad. Second, we learnt the hardware and software system of electronic scale. Then we deeply studied the system and theory of pricing scale, which is complained and dealt most. Second, we analyzed the cases of fraud using in pricing scale and knew the methods and features of these cases well. Finally, we gave the general requirements for the software and hardware of electronic scales on the basis of technology analysis and sample testing to make sure of the potential positions.