The electronic scale is a scale that equipped with electronic devices (also called weighing machine). Because of its great variety and relates to trade settlement as well as to protect the interests of consumers, it gets the concern and attention of governments around the world and was determined as the legal measuring instruments compulsive managed by the country. Electronic scale is an important measure of automatic weighing control and trade. It plays an important role in strengthening enterprise management, strict production, trade settlement, transportation, port measurement and scientific research. The electronic scale has the characteristics of fast response, wide measuring range, wide application, simple structure, convenient operation, and easy control of computer remote signal. It has been widely used in coal, petroleum, chemical, electric power, light industry, metallurgy, mining, transportation, ports, construction, machinery manufacturing and national defense and other fields.
Current Status of Electronic Scales
In traditional electronic scales, sometimes due to a change of some function, factory has to buy a set of very large mechanical automation equipment, and then each automatic operation are made by their own equipment. Although during use, the factory can solve some problems, but when details changed, problems cannot be solved perfectly. So it appears such solution: factory operator cooperates with intelligent electronic scale factory, specify the needed function to change the software. In this way, it will increase the speed, only a small step for future any change. Compared to change the whole set, it really saves the machine and cost.
Electronic scale manufacturing technology and application gets new development: technology evolved from static to dynamic weighing; measurement methods from analog to digital measuring; measuring characteristics from single parameter to multi parameter, specially for research and application of fast weighing and dynamic weighing. But on the whole, the quantity and quality of electronic scales in our country still has some distance from those of developed countries. In recent years, China has invested heavily in research to accelerate its development.
Electronic Scale Industry Development Prospects
By analyzing development status of this year electronic scale products and the demands home and abroad, the whole developing trend is :Miniaturization, Modularization, Integration and Intellectualization; technical performance tends to be high speed, high accuracy, high stability and high reliability; function trends to be “Intellectualization” for both control and non-control information for weighing; its application performance tends to be comprehensive and combination.
China electronic scale industry is a long history of the development traditional industry and important basic industry. After the reform and opening up, China electronics industry has a rapid development, the electronic scale industry management system, industry structure, product structure, technical level and the status in the national economy is changing greatly. Over the years, China is focused on mechanical weighing machine. In 1980s, it began to expand the use of electronic scale and research of large automatic weighing instrument. Now China has been able to independently design and manufacture all kinds of high precision, faster operation, accurate measurement of electronic scales.
Our electronic scales were developed from the initial electromechanical combination to nowadays electronic and digital intelligent. The technical equipment and testing methods of electronic scales in China have reached the level of international mid 90s. Electronic scale manufacturing technology and application has reached new development: Electronic weighing technology from static to dynamic; measurement methods from analog to digital; measurement characteristics from single parameter to multi parameter measurement, especially for the research and application of rapid weighing and dynamic weighing. But overall, China’s electronic products quantity and quality compared with developed countries there is a large gap, the main gap is the technology not advanced enough, process equipment and testing instruments aging, R&D insufficient competence, products specifications and functions less varieties, poor stability and reliability etc.
Weighing display controller combines with computer and increase the function of weighing display controller by using intelligent computer. Based on the original function, electronic weighing instrument has more functions such as reasoning, judging, self diagnosis, self adaptation, self-organization and etc., which is nowadays fundamental difference between electronic weighing apparatus that uses computerized weighing display controller and that using intelligent weighing display controller.
The development rules of electronic weighing technology is to keep strengthening basic research and expand the application, expansion in the new field, infiltration to adjacent disciplines and industries, integration of all kinds of technology to solve the problem in weighing, automatic control and information processing etc.. For example, in the flow measurement profession, if build a set of standard large flow measurement system according to the traditional theory and methods , the price will be very expensive.
In industrial weighing or technological process, many weighing system also requires a combination, namely the measuring range can be arbitrarily set; hardware can make some adjustments according to certain working condition and environment, hardware function developed to software function; software can modify and expand according to certain program; the input and output data and instructions can use different languages and bar code, and can communicate with the external control and data processing equipment.
Small volume, low height, light weight, namely small, thin and light. In recent years, the newly developed electronic platform scale structure fully reflects the development direction of small thin light. For low capacity electronic platform scales and electronic axle scales, they can use thin or ultra-thin round load cell, embedded directly into the blind hole same size as the weighing load cell outer diameter that at the bottom of of steel or aluminum plate and become low profile scale structure, the quantity and location of the weighing load cell is determined by the rated load and mechanical requirements of the scale.
For large or very large carrier structure, such as a large static and dynamic electronic truck scale, has begun to use several standard structure length of module, after split combination, become new varieties and specifications. Take three standard modules (5, 6, 7) m with same width as an example, from a single block, two blocks, three blocks to four blocks, it can be combined into a length of (5 ~ 28) m of 22 kinds of scale structures.
For certain type and structure electronic weighing machine, such as small electronic platform scale, specialized scale, portable static and dynamic electronic axle scale, static and dynamic electronic track scale, can achieve integration of scale body and load cell, rail and weighing sensor, track scale body and railway line.
Due to rapid development of technology and application level, the digitization, integration, networking, intellectualization of electronic scale products will become the world’s industrial development direction and focus. China advanced weighing machines with high technology are still replying on import, therefore, in the field of high technology weighing electronic scale, Chinese manufacturing enterprises have a huge space for development. In addition, with the continued growth of domestic consumption and industrial economy, electronic scale products demands domestic will further move up.