Abstract: It is rumored that one of Zhuge Kongming's greatest inventions was the "wooden ox and flowing horse", which was mainly used to replace manpower in warfare to transport grain and grass. This skill, which at the time seemed to be a marvelous workmanship, has long been a marvel to the world. Nowadays, the modern version of the "wooden cow flowing horse" - automatic guided transport vehicle (AGV) has been popular in various types of enterprises such as e-commerce, express delivery, warehousing and sorting, automobiles, tobacco, medicine, 3C, clothing, etc.
It is rumored that one of Zhuge Kongming's greatest inventions was the "wooden ox flowing horse", which was mainly used to replace manpower in warfare to transport grain and grass. This skill, which at the time seemed to be a marvelous workmanship, has long been a marvel to the world. Nowadays, the modern version of the "wooden cow flowing horse" - automatic guided transport vehicle (AGV) has been popular in various types of enterprises such as e-commerce, express delivery, warehousing and sorting, automobiles, tobacco, medicine, 3C, clothing, etc.
AGV, a modern version of the "Wooden Cattle Flowing Horse", is very suitable for intra-factory logistics transportation applications in many industries due to its high degree of automation, flexibility, and small footprint, which can shuttle freely in various production workshops. As a battery-powered automatic trolley, the AGV's automatic guided vehicle is a key component. Through this device, the AGV can drive along the specified guidance path and accurately complete various picking, handling and distribution under the premise of ensuring safe operation.
Compared with the traditional magnetic navigation method, RFID radio frequency identification technology, because it will not be affected by magnetic stripe, laying, environment and other factors, its RFID read/write head can very accurately identify the AGV landmark - RFID chip, so that it can achieve positioning control of AGV at various key nodes. Balluff, a provider of industrial RFID systems, offers a range of industry-leading application values for this requirement.
RFID positioning technology can be described as one of the core values in the application of AGV trolleys. With a series of unique identification advantages, RFID tag positioning and navigation can flexibly and conveniently help create efficient and flexible automated conveyor logistics applications, thus laying the foundation for the realization of smart factories.
In AGV applications, a good RFID system offers a range of advantages, including:
●Strong anti-interference, not easy to be interfered by environmental humidity, noise, oil pollution, electromagnetic field, strong vibration and other factors, can stably read the data in the tag, to ensure the smooth operation of AGV;
● Strong penetration, can penetrate the object at a long distance to read the tag, does not affect the recognition distance, which means that the AGV chassis can be appropriately raised under the premise of maintaining accurate positioning to ensure that the AGV can meet the needs of various terrains.
●Fast recognition speed, even when the AGV accelerates, it can read the tag information in time and accurately.
So, how is RFID positioning applied to AGV trolleys?
To put it simply, first of all, it is necessary to install an RFID read/write head under the AGV trolley, and at the same time, an RFID tag landmark is installed at the driving track node. When the AGV passes through the place, the read/write head reads the landmark information, and then carries out corresponding actions under the control of the upper PLC, such as speed change, steering, positioning, parking, etc., and automatically conducts wireless data transmission with the upper computer.
For AGV trolley applications, RFID installation convenience, anti-interference ability, power consumption level and communication ability are all very important value points.
●An automation engineering company adopts the BIS0179 integrated RFID solution provided by Balluff. The RFID chip is buried in the ground, and the integrated read/write head is installed on the AGV trolley to locate the position of the trolley and trigger the next action.
●BIS0179 The integrated RFID solution is small, easy to install, and has little space requirements for AGV trolleys; The read/write head has fast reading speed and strong penetration; Using the mature ProfiNet industrial Ethernet standard communication protocol, no controller is required, no redundant interface is wasted, suitable for independent AGV trolley control, and the RFID chip is easy to install, repeatable read and write, and has high stability performance.
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