2.1 For the safe walking, consider using alarms, signs, signals, colors, safety bars and other warnings on the AGV running path to ensure safety.
2.2 In order to prevent collision with people and surrounding facilities, it is considered to set corresponding anti-collision devices as needed.
2.3 When AGV is linked with stations, automatic doors, elevators and other facilities, it is necessary to systematically consider all aspects of linkage factors to coordinate their movements and interlock with the operation of AGV.
2.4 It is necessary to coordinate with the actions of the surrounding equipment and related equipment, such as the acceptance of goods and intelligence, so as to achieve safe start and continuous operation.
2.5 Special environment, verify and clarify its environmental conditions beforehand, and set special AGV operating rules as needed.
2.6 Lay the road surface suitable for AGV safe driving and display safety passages and safe driving areas within its range. When the driving lane is shared with the general passage, pedestrians can avoid the safe space of the vehicle between the pedestrian and the AGV driving lane. Normally, the AGV runs the channel and tries to limit the entry of pedestrians. At intersections, forks, sharp turns, etc., pedestrians may unexpectedly collide with the AGV because they do not see the vehicle. Therefore, it is necessary to set up safe escape places in these places and set up a target.
2.7 For the different guidance systems of AGV, the electromagnetic wave, light, ultrasonic wave generated by the power equipment, electric wiring, lighting equipment, air machine, etc. used in the driving area, and the static electricity generated by the friction between the wheel and the road surface should be set. Corresponding safety measures. 3 Computer system security protection information processing 3.1 In order to ensure the safe scheduling operation of AGVS equipment, it is first required to build an accurate underlying basic database, such as the arrangement of electromagnetic guided ground path, the arrangement of laser guided laser radiation board and The drawing of the path, etc., must be scientifically planned and accurately measured. The data provided to the host computer system must be scientific, accurate, and capable of effective control, that is, communication between the underlying and host computers must be smooth, secure, and reliable.
3.2 The normal operation of AGVS must comply with certain scheduling principles. For example, the task priority, the AGV in the execution of the task must be completed after the completion of the current task; the AGV in operation is close to the task, and the AGV in the system can Randomly determine the priority of the task to be executed nearby; and the AGV must comply with traffic control principles in normal operation. The computer management system software must include intelligent diagnostics of these principles and the ability to handle abnormal faults based on received information.
3.3 The computer management system software itself must have self-diagnosis, self-protection function, and automatic system recovery function after abnormal fault clearing.
In short, the computer management system implements effective, integrated control command scheduling, which is necessary for AGV in normal operation. As the dispatching hub, the computer management system must ensure the safe operation of the AGVS in the actual production process, and must also ensure the security of the system itself.
4 Application examples and conclusions
In the mid-1990s, Kunming Marine Equipment Group successfully developed a variety of laser guided transport vehicles based on the application of international advanced AGV navigation technology, and applied it to the auxiliary library and finished product warehouse of Yunnan Honghe Cigarette Factory. In the automated logistics system such as the tobacco leaf formula library, the automation technology has been successfully flexibly and pleasantly extended to all aspects of actual production. At present, Kunming Marine Equipment Group Co., Ltd. has approved the production and sales of AGV, and has a high level of AGVS product development capability and technical implementation capability.
During the development of the AGV series of products, designers have made safety protection measures one of the keys to design development. The existing AGV products are equipped with multiple safety protection measures, such as the use of FRP, soft cowhide and micro switch to form the obstacle contact buffer of the AGV, and use the infrared obstacle detector to call up two levels of proximity detection range, using photoelectric switches, etc. Form a safety anti-collision device, etc. These measures enable the AGV to form a protective system with intelligent functions that works well over long periods of time.
The specific implementation of AGVS is divided into three parts: high-performance AGV stand-alone products, system operating environment construction and upper computer system software development. In the specific design and development, manufacturing and on-site implementation process, only through continuous exploration, research and summary, and accumulated experience, can we improve the safety protection measures of AGV.
