GJR5252300R0102推动供应链 4.0 实现这种演变的是自动化和可追溯技术的重大进步。例如，RFID 扫描技术更新了传统的二维条码，提高了生产力，同时可以与机器视觉和预测分析等其他解决方案集成。固定式 RFID 读取器将在未来仓库环境中发挥重要作用。当与其他先进的解决方案结合，RFID 技术能够为仓库或配送中心的关键经济驱动力提供支持，包括资产可见性、生产力、质量控制以及追踪和追溯等。
RFID 技术在仓库和物流环境中部署变得越来越有效、也更具性价比，使其得到了更广泛的采用。但是，要实现的（ROI），需要与解决方案提供商合作，助力将技术集成到业务中，以避免出现孤立的工作流程，并限度地降低复杂性。制造工厂特别适合使用无源 RFID 读取器，因为那里的材料通常遵循固定路径通过设施。新的广域0 RFID 天线可以扩大扫描范围，以便对仓库中的每一项资产进行实时位置追踪。
在离散制造中，库存通常是序列化的，每个独特的零件都有专用的位置。使用 RFID 标签，生产经理能够确保材料正确排序，以便正确的组件在正确的时间进入生产线。                         

提高可见性不仅使机构能够在错误发生后检测到错误，还有助于防患于未然，预防问题的发生，避免可能损害公司声誉或盈利的潜在质量控制问题。此外，预防资产利用问题并加强对原材料的追踪，能够帮助企业在不影响生产力的情况下，维持生产线运行。供应链转型不仅限于一个或几个行业。大部分相同的供应链技术可以应用于多重行业--从汽车、服装到制药和杂货，从制造工厂和仓库延伸到交通运输，再到终分销点，例如零售商铺和医疗设施等。RFID 解决方案可以帮助杂货店、快餐店、食品供应商甚至医院显著提高库存可见性、降低成本并减少浪费。在门廊或冷却器等通道中安装无源 RFID 读取器，可在不增加劳动力成本的情况下，提高控制能力和可见性。RFID 还能提高药品供应链的可追溯性，并与温度监控解决方案集成，以提供更详细的信息。
可先在标量下运行逐步提高频率，观察电流波动是否较大。  存放要求

备用模件存放应满足的要求为：各种模件必须用防静电袋包装后存放或根据制造厂的要求存放，模件存贮室的温度、湿度也应满足制造厂的要求；存取模件时应采取防静电措施，禁止任何时候用手触摸电路板，并且进行登记，办理进、出库手续。

2  定期检查

应每半年对本专业保存的各种少量常用备件进行检查，检查内容如下：

（1）表面清洁、印刷板插件无油渍，印刷板插件无油渍，轻微敲击后无异常。

（2）软件装卸试验正常，通信口、手操站工作正常。

（3）各种模拟量、开关量输入、输出通道工作正常。

（4）装入测试软件，正常工作不少于48h以上。

（5）冗余模件的切换试验。

（6）检查后应填写检查记录，并粘上合格标志。

3  使用前检查

模件投入运行前必须检查各通信口、I/O功能、控制算法功能是否满足要求；在工程师站上对模件状态进行检查符合要求；在模件内装入组态，检查是否正确。

4  投用时确认

投用时，应该对模件地址和其他开关设定，并监护人确认后，方可插入正确的模位，并填写记录卡。
Point estimation

When estimating I / O points, appropriate margin shall be considered. Generally, 10% ~ 20% expandable margin shall be added according to the statistical input / output points, which shall be used as input / output point estimation data. During the actual ordering, the input and output points shall be rounded according to the product characteristics of the manufacturer's programmable logic controller. [5]

Memory capacity

The memory capacity is the size of the hardware storage unit provided by the programmable controller itself. The program capacity is the size of the storage unit used by the user application items in the memory, so the program capacity is smaller than the memory capacity. In the design stage, since the user application program has not been prepared, the program capacity is unknown in the design stage and needs to be known after the program debugging. In order to estimate the program capacity in the design and selection, the memory capacity estimation is usually used instead. [5]

There is no fixed formula for estimating the memory capacity of the memory. Many literatures have given different formulas, which are generally 10-15 times the number of digital I / O points, plus 100 times the number of analog I / O points. This number is the total number of words of the memory (16 bits are one word). In addition, the margin is considered as 25% of this number. [5]

Control function selection

The selection includes selection of characteristics such as operation function, control function, communication function, programming function, diagnosis function and processing speed. [5]

1. Arithmetic function

The operation functions of the simple programmable logic controller include logic operation, timing and counting functions; The operation function of the general programmable logic controller also includes the operation functions such as data shift and comparison; The more complex operation functions include algebraic operation and data transmission; The large-scale programmable logic controller also has analog PID operation and other advanced operation functions. With the emergence of open systems, all programmable logic controllers have the communication function. Some products have the communication with the lower computer, some products have the communication with the same computer or the upper computer, and some products also have the function of data communication with the factory or enterprise network. The design and selection shall be based on the requirements of practical application, and the required calculation functions shall be reasonably selected. In most applications, only logic operation and timing and counting functions are required. In some applications, data transmission and comparison are required. When it is used for analog quantity detection and control, algebraic operation, numerical conversion and PID operation are used. Decoding and encoding are required to display data. [5]

2. Control function

The control functions include PID control operation, feedforward compensation control operation, ratio control operation, etc., which shall be determined according to the control requirements. Programmable logic controller is mainly used for sequential logic control. Therefore, single loop or multi loop controller is often used to solve the control of analog quantity in most occasions. Sometimes, intelligent input / output unit is also used to complete the required control function, so as to improve the processing speed of programmable logic controller and save memory capacity. For example, a PID control unit, a high-speed counter, an analog unit with speed compensation, and an ASC code conversion unit are used. [5] Automation technology is widely used in industry, agriculture, scientific research, transportation, commerce, medical treatment, service and family. The adoption of automation technology can not only liberate people from heavy physical labor, part of mental labor and harsh and dangerous working environment, but also expand the functions of human organs, improve labor productivity and enhance the ability of human beings to understand and transform the world.

Automation is a high-tech company specializing in the R & D, production and sales of intelligent automatic control, digital and networked controllers and sensors. Its numerous functional modules and perfect embedded solutions can meet the personalized needs of many users. The company has a variety of products to meet the needs of customers. The automation equipment is composed of vibrating plates.

significance

Large complete sets of equipment in the automation system, also known as automation devices. It refers to the process of automatic operation or control of a machine or device according to specified procedures or instructions without human intervention. Therefore, automation is an important condition and significant symbol for the modernization of industry, agriculture, national defense and science and technology.

Check all power, air and hydraulic sources

Power supply, including the power supply of each equipment and the power supply of the workshop, i.e. all the power supplies involved in the equipment.

Air source, including the air pressure source required by the pneumatic device.

The hydraulic source includes the working conditions of the hydraulic pump required by the hydraulic device.

In 50% of the fault diagnosis problems, basically the errors are caused by the power supply, air source and hydraulic source. Such as power supply problems, including power supply faults of the whole workshop, such as low power supply, burnt fuse, poor contact of power plug, etc; The air pump or hydraulic pump is not opened, the pneumatic three-way or two-way parts are not opened, and the relief valve or some pressure valves in the hydraulic system are not opened. These basic problems are usually common problems.

Check whether the sensor position is offset

Due to the negligence of the equipment maintenance personnel, the position of some sensors may be wrong, such as not in place, sensor failure, sensitivity failure, etc. The sensing position and sensitivity of the sensor shall be checked frequently, and the deviation shall be adjusted in time. If the sensor is damaged, it shall be replaced immediately. In many cases, if the power supply, air source and hydraulic source are guaranteed to be correct, more problems are sensor failures. In particular, due to the use of magnetic induction sensors, it is likely that the internal grounding wires are stuck to each other and cannot be separated, resulting in a normally closed signal. This is also a common fault of this type of sensor and can only be replaced. In addition, due to the vibration of the equipment, most of the sensors will be loose after use. Therefore, during daily maintenance, it is necessary to frequently check whether the position of the sensor is correct and whether it is fixed firmly.

Check relay, flow control valve and pressure control valve

The relay, like the magnetic induction sensor, will also have grounding adhesion when used, which cannot guarantee the normal operation of the electrical circuit and needs to be replaced. In pneumatic or hydraulic systems, the opening degree of throttle valve and the pressure regulating spring of pressure valve will also loosen or slide with the vibration of equipment. Like sensors, these devices are components requiring routine maintenance in the equipment. Therefore, in daily work

Speaking of AI, many people can trace back to the imagination of science fiction writers nearly 100 years ago or the hypothesis put forward by Turing 64 years ago. But in my opinion, the whole history of human civilization has been permeated with the pursuit of machine intelligence. For example, the abacus, which Mr. Yang Zhenning called "the earliest computer in the world", was a mainstream computing tool until the popularity of PC. in the 1970s and 1980s, many Chinese parents sent their children to learn mental arithmetic and abacus - the abacus itself is a tool that is endowed with rules and reflects human wisdom. In essence, it can be said to be in the same strain as today's PCs, smartphones and tablet devices.