Position protecting method and device based on projection boundaries for complex harbor machines

Abstract

The invention discloses a position protecting method based on projection boundaries for complex harbor machines. The position protecting method comprises the following steps that (1) the contour boundary lines of the two-dimensional projection of the complex harbor machines are obtained and determined; (2) the distance between the contour boundary lines of two adjacent complex harbor machines is calculated; (3) the minimum distance between the contour boundary lines of two adjacent complex harbor machines is determined; (4) whether the minimum distance is smaller than a set safe value or not is judged, and when the minimum distance is smaller than the set safe value, the adjacent complex harbor machines are respectively operated at reduced speed or stopped and mutually give out corresponding alarms. The invention further discloses a position protecting device based on the projection boundaries for the complex harbor machines. The position protecting device comprises a first position data collecting unit, a second position data collecting unit, a first information exchange unit, a second information exchange unit, a first control unit and a second control unit. The position protecting method and device based on the projection boundaries for the complex harbor machines have the advantages that the space of a harbor is fully utilized, all-directional position protection is achieved, and the position protecting method and device are simple and easy to implement.

Description

technical field [0001] The invention relates to the field of protection of complex port machinery, in particular to a position protection method and device for complex port machinery based on projection boundaries. Background technique [0002] Port machinery is usually installed on a fixed track, equipped with a cart that can move linearly along the track, and the position on the track is recorded by a position encoder. However, for most complex port machinery, when the position of the cart is fixed, there are complex rotating parts such as the boom and boots, which can realize 360-degree omnidirectional rotation in situ, such as the chain bucket ship unloader commonly used in coal-fired power plants. Ports are usually equipped with multiple machines, and limit switches or radar range finders are often used to detect the position of carts to prevent collisions between adjacent machines. [0003] For complex port machinery with the same structure, in addition to the protect...

AI Technical Summary

Problems solved by technology

The algorithm is simple and the protection is effective, but it fails to make full use of the space and affects the overall efficiency of the port

[0004] For complex port machinery with large structural differences, such as bridge ship unloaders and chain bucket ship unloaders, the existing anti-collision protection is limited to the position protection of the cart

Although the method is simple, collisions between the boom and the girder often occur, causing personal injury and economic loss

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