Abstract: With the development of modern science, technology and culture, all kinds of weighing instruments in our country have been developed towards the electronic aspect. Whether in the past or now, no matter the traditional weighing instrument or the current electronic weighing instrument, its use and structure exist to meet the needs of people. Therefore, in order to keep up with the pace of the development of the times, we need to Research and build electronic weighing instruments made with the support of modern advanced science and technology. At present, most of the electrical scales we use are mainly electronic scales, and the use of electronic scales has been implemented in all aspects of our lives. Therefore, this article is mainly aimed at the scientific maintenance of electronic scales during use. And maintenance work to do a detailed analysis and step analysis, and also make some specific elaborations on the protection and detection of electronic weighing instruments.
  Key words: electronic weighing instrument; maintenance; maintenance; electronic scale;
With the rapid development of our country's society, economy and culture in recent years, we are no stranger to all kinds of electronic weighing instruments that can only be used, and even the upgrading of these devices and electronic weighing and intelligent network systems There is also a certain pursuit and cognition. However, the practical application of the electronic weighing instrument calculation technology we are using in electronic engineering is only in a relatively primitive practice method and method. The practical degree of this electronic weighing instrument intelligence in life measurement means that my country's electrical appliances are intelligent The degree of application of modern technology is far from reaching the level required by modern science and technology, and the most common source of information that people contact and use now is intelligent network transmission of products with modern technology, so if we don’t focus on To carry out the intelligent expansion of electronic weighing instruments and the optimal management design and application of computers, the rapid development trend of our buildings cannot meet the requirements of contemporary society, and things that cannot keep up with social progress are bound to be eliminated.
This article will focus on the analysis of the maintenance and maintenance of electronic weighing instruments in the process of use. The specific contents include the way of obtaining information and the conditions of use of the automation of the electronic weighing system, the detection method and step analysis of the intelligent system management of electronic weighing instruments, and the impact of the practical level of modern computer network technology in the building on the operation efficiency of related electronic information. The emergence of these common methods of on-site detection carries out a series of analyses and puts forward corresponding viewpoints.
1 Development Trend of Electronic Weighing Apparatus
After several years of development, electronic weighing instruments have a wide variety of specifications and models. They are not only limited to weighing and pricing, but also become a measurement and control unit of the production process inspection system. With the continuous application of electronic weighing instruments, Its application fields are also expanding. The intelligentization of electronic weighing instruments is a major point that every advanced individual must keep up with the times, and the innovative research on the application of these intelligent buildings can not only make my country's computer measurement enter a new era of faster and more convenient, this kind of calculation The innovation in measurement can also comprehensively drive the overall progress of various industries in my country. However, it is obviously a difficult problem to explain how to apply the innovation of electronic weighing instruments in real life. Therefore, we must learn to start from the principle of measurement itself, from the unit of measurement and the ontology of calculation. Building members to start, only by doing this well, we can achieve the purpose and goal of scientifically improving technology and scientific self-exploration.
Miniaturization: Electronic weighing instruments have begun to develop in the direction of small, thin and light. People's demand for electronic weighing instruments is increasingly developing in the direction of small size, low height, and lightness. In order to achieve this demand for miniaturization, the selection of electronic weighing instruments There are special requirements, usually hollow corrugated copper sheets with light weight and high rigidity and thin-walled profiles with square closed section are used.
Modularization: The combination of modularization has greatly changed the varieties and specifications of electronic weighing instruments, making electronic weighing instruments more versatile and reliable. Or the way of split combination, which effectively reduces the cost of the electronic weighing instrument, and improves the production efficiency to a large extent.
Intelligent: With the development of information technology, electronic weighing instruments can be combined with computers or developed for weighing computers, which can effectively use the intelligent function of computers to increase the function of display control and make electronic weighing instruments. The original function has been expanded in a large range.
2 Use and maintenance of electronic scales
Electronic scale is a kind of electronic weighing instrument, which is mainly used for weighing and measuring objects. During the weighing process, if the measurement is inaccurate, it will affect the user's own interests. In the process of using electronic scales for weighing There will be some problems, mainly due to improper use and daily maintenance, which will seriously affect the accuracy of measurement. Therefore, when using electronic scales to measure, you need to master some basic knowledge to ensure the correct use method. When using an electronic scale for weighing measurement, the electronic scale should be placed on a stable and fixed table, and no substances unrelated to the object being weighed should be placed on the scale. The inclination or shaking of the electronic scale will affect the accuracy of measurement. So maintaining the level of the electronic scale is the primary factor.
When not in use at ordinary times, the electronic scale should be kept properly, the power should be turned off, and heavy objects should not be placed on the electronic scale. There is a mercury bubble on the panel of the electronic scale. In order to ensure the level of the electronic scale before weighing, it is necessary to observe whether the mercury bubble is in the middle position. If it deviates, it means that the electronic scale is not level, so it needs to be adjusted.
3. Basic methods for detecting faults of electronic weighing instruments
The basic method of electronic weighing instrument fault confirmation is to solve it one by one. Because the electronic weighing instrument is mainly composed of scale body, sensor, junction box, instrument and so on. Therefore, first determine whether the fault occurs in the scale body part or the instrument part.
(1) Turn off the power and disconnect the connection between the meter and the scale;
(2) Connect the instrument with the simulator to check whether the instrument is working normally;
(3) If the meter is normal, disconnect the sensor wiring one by one to find out the faulty sensor;
(4) Use a multimeter with relatively high accuracy to measure the input/output impedance of the sensor, if any item is abnormal, it indicates that the internal circuit is faulty;
(5) Measuring the no-load output of the sensor: >+5mV or +20mV are both sensor failures;
(7) Measure the insulation resistance of the sensor