Tank obstacle marking using an electronic level meter

摘要

The obstacle marking method (600) uses an electronic level meter (ELG) (140) coupled to the tank (110) to receive the first received when the material (120) in the tank is at the first level. Generating (608) a first echo curve (510) from one reflected signal (echo signal). The ELG includes an radar obstacle detection algorithm (143a) stored in a memory (142) coupled to the ELG. A processor (141) that implements an obstacle detection algorithm has at least a first in the first echo curve to provide at least one suspected obstacle (410) along with its position (first feature position) (546). Identify features. A second echo curve (540) is generated from the second reflected signal when the material is at the second level (612). A third echo curve (530) is generated from the third reflected signal when the raw material is at the third level (614). The suspected obstacle at the first feature location is stored in the memory (616) along with the first feature location as a confirmed obstacle (346).