The Status And Development Of Electronic Weighing
Electronic weighing instrument generally refers to the weighing apparatus equipped with electronic devices. Because of its wide range, and related to trade settlement and protect the interests of consumers, so the governments of the world wide concern and attention, and is identified as a national mandatory administration of legal metrology instruments. Electronic weighing instrument is an automated weighing control and trade an important means of measurement, to strengthen enterprise management, strict production, trade settlement, transportation, port measurement and scientific research have played an important role. Electronic Scale with a fast response, wide measurement range, a wide range of applications, simple structure, the use of convenient operation, the signal FET, easy computer control and so on. Has been widely used in coal, petroleum, chemical, electric power, light industry, metallurgy, mining, transportation, ports, construction, machinery manufacturing, and defense and other fields.
First, the status quo
50 the infiltration of the mid-electronic technology to promote the development of the manufacturing sector of the weighing apparatus. The early 60s there has been mechanical and electrical combination of electronic weighing, after 40 years of continuous improvement and perfection of China’s electronic scales from the initial mechanical and electrical integration based development to the current all-electronic-based and digital intelligent. China’s electronic weighing technology and equipment and testing means testing the basic reached the international level of the mid-90s. Electronic Instrument Manufacturing Technology and Application has been new development. Weighing electronic weighing technology from static to dynamic weighing development: measurement method from analog to digital measurement of measuring development; measurement characteristics from a single parameter measurement to a multi-parameter measurement development, especially for fast weighing and dynamic weighing Research and Application of . But overall, China’s electronic weighing the quantity and quality of products there is a large gap between the industrialized countries, the main difference is less advanced technology and processes, process equipment and testing instruments aging, lack of development capacity, product varieties specifications less dysfunction, stability and reliability so poor.
Second, trends
In recent years, electronic weighing products through the analysis of development and domestic and international market demand, electronic weighing the overall trend is smaller, modular, integrated, intelligent; its technical performance tends to be high speed, high accuracy, stability , high reliability; its functions tend to be weighing measurement control information and non-control information equal emphasis on the “intelligent” function; its application performance tend to be comprehensive and composite nature.
1. Miniaturization
Small size, low profile, light weight, that is a small, thin, light. In recent years,
The newly developed e-platform fully reflects the small scale structure of thin and light direction. For low-volume electronic platform scales and electronic axle scale, can be used to thin or ultra-thin circular load cell, directly embedded steel or aluminum underside of the same diameter and weighing sensor blind hole to form a low profile scales body structure, number and location of load cell rated by the scale and mechanical load requirements in the decision. Steel or aluminum body of the table is the scale, weighing sensor is sensing element, but also load-bearing pivot point, greatly simplify the structure of the scale body, reducing the active connection links, not only reduces costs, but also improve the stability and reliability. For middle-or large-capacity electronic platform scale, electronic floor scale, there have been closed using square or rectangular cross-section of the thin-walled steel, parallel line out into a whole raft welded structure of the scale body, four weighing sensors, respectively installed in the outermost ends of two thin-walled steel incision within the weighing sensor installed in the load-bearing point of the fixed bearing is the fulcrum of the load-balance the body, both by force transmission of the load-bearing body, but also saving scale body height, which is a promising body of the structure of the scale. For large-scale electronic platform scales, finite element method can be used such as strength and stiffness calculations, using the flexural rigidity of the profile and light corrugated sandwich plate and so on.
2. Modular
For large or very large load-bearing device structures, such as large-scale static and dynamic electronic truck scale and so on, have begun using several criteria for the length of the structure of the module, after a sub-combination, and produce new varieties and specifications. To (5,6,7) m long with the width of the three kinds of standard modules, for example, from a single block, 2, 3-4 split combination, can be combined to grow degrees (5 ~ 28) m of the 22 species of split-type scale body structure specifications. Of course, in practical applications, according to the needs of customers in each industry, selection of which more than 10 kinds of commonly used standard can be. This modular split-type scale body structure, not only improved the product’s versatility, interchangeability, and reliability, but also greatly enhance the production efficiency and product quality. While also reducing costs, enhancing the enterprise’s market competitiveness.
3. Integrated
For some species and the structure of electronic weighing, such as small electronic platform scales, special scales, portable electronic axle scale static and dynamic, static and dynamic electronic track scale and so on, can be achieved scale body and weighing sensors, rail and weighing sensors, rail scale scale integration of body and railway line.
Such as the body and weighing scales, portable sensor integration, static
Dynamic electronic axle scale, multi-plate made of hard aluminum alloy. The structure principle is reinforced through the solution heat treatment of aluminum alloy plate, or through the four corner holes and slot milling were formed four cantilever-type load cell; or aluminum alloy plate in the bottom of milling out the number of blind hole symmetry and blind-slot form an overall shear beam type load cell. This makes the scale body combined with the weighing sensors, namely, aluminum alloy plate is both a scale is also a large body of the table plate weighing sensor. In the latter the structure of 10t axle scale portable dynamic electronics, for example, the dimensions of 720mm × 550mm × 32mm, weighs about 23kg.
4. Intelligent
Electronic weighing weighing display controller combined with the computer, using computer intelligence to increase the weighing display controller functions. Make electronic weighing on the basis of the original function, increase reasoning, judgments, self-diagnosis, self-adaptive, self-organization and other functions, which is on the market today use computer-based display controller of electronic weighing scales and the use of intelligent weighing display control electronic weighing device fundamental difference.
5. Comprehensive
Laws of development of electronic weighing technology is the continuous strengthening of basic research and expand the application of new technologies extend to neighboring disciplines and industry penetration, integration of technology to solve the weighing measurement, automation, information processing and other issues. For example, in flow measurement expertise, according to the traditional theories and methods of construction of a set of standard high-flow measurement system, the price very expensive. If the mass flow rate using weighing method that law, as long as the weight and time measurement accuracy, large flow measurement problem be solved. Electronic Price Computing Scale for certain commercial purposes, only with weighing, pricing, display, print function is not enough, the modern commercial system also requires it to provide a variety of sales information, and weighing close integration with the management automation, so that weight, pricing, into the database, sales management integration, the realization of management automation. This will require Electronic Price Computing Scale with computer networking, the weighing system and computer system to form a complete integrated control system.
6. Composability
Weighing in the industrial process or measurement process, many weighing measurement system also requires can be combined, ie, measuring range, etc., may arbitrarily setting; hardware can be based on certain working conditions and environment to make certain adjustments to the hardware functions Software direction; software can be modified according to certain procedures and expansion; input and output data and instructions can use different languages and bar codes, and can with an external control and data processing equipment to communicate.
3, Conclusion
China’s electronic weighing instrument to break into the international market. Participate in international competition. Must be the implementation of international legal metrology organizations to develop international recommendations and to have an international standard of technology and equipment, there are international standards of quality. This requires enterprises to technology-led, quality as the center, to manage the basis of efforts to improve the level of manufacturing technology and manufacturing processes, stable product quality. Enhance international market competitiveness.
Faced with the international advanced level and China’s sustained development of the excellent situation, our attitude should be clear, that is, from the conceptual, technical and management quickly catch up, aiming at advanced with the times, to meet the challenge, exploration and innovation, to improve the level of manufacturing technology and manufacturing process as a breakthrough, mainly to solve the electronic weighing products in the engineering design type. Production processes, quality assurance, reliability assessment, etc.-scale production of the key technologies and processes, improve batch production capacity, so that our country’s national scales industries become the track of healthy and sustainable development
I am an expert from China Manufacturers, usually analyzes all kind of industries situation, such as hot dog broiler , green pea salad recipe.
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