The Power Construction Corporation of China has been granted a patent for a method to trace pollution at a drainage outlet of a culvert. The method involves using an inspection robot to collect image data, water quality data, and coordinates of the outlet. The data is then analyzed to determine the type of outlet and trace the source of pollutants. GlobalData’s report on Power Construction Corporation of China gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Power Construction Corporation of China, AI assisted CAD was a key innovation area identified from patents. Power Construction Corporation of China's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.

Method for tracing pollution at a culvert's drainage outlet

Source: United States Patent and Trademark Office (USPTO). Credit: Power Construction Corporation of China

A recently granted patent (Publication Number: US11645842B2) describes a method for tracing pollution at a drainage outlet of a culvert. The method involves several steps to determine the type of drainage outlet and locate the source of pollution if mixed rainwater and sewage are present.

In the first step, main line information of the culvert is acquired using an inspection robot. This information includes a three-dimensional image of the culvert, coordinates, size, elevation of the drainage outlet, and whether there is sewage flowing out. The inspection robot is equipped with various modules such as a power module, three-dimensional laser scanning module, image collection module, water quality detection module, and more.

The main line information is then subjected to statistical analysis to determine the type of drainage outlet. This analysis helps determine whether there is mixed rainwater and sewage at the outlet. If mixed rainwater and sewage are detected, the method proceeds to trace the pollution and locate the source.

To trace the pollution, the method involves detecting the pipelines connecting the drainage outlet to a manhole. Flow data obtained at the drainage outlet is compared with that obtained at the manhole to determine the source of pollution. If the flow data is inconsistent, the inspection robot detects the pipelines and determines the position of the pollution source. If the flow data is consistent, the water quality detection module is used to detect water in the manhole, and the method proceeds to the next step.

The patent also includes a modification step for drainage outlets with rainwater-sewage connection. If such a connection is detected, the drainage outlet is modified, and the inspection robot determines whether the modified outlet is still connected to rainwater and sewage. If not, the modification is considered complete.

Additionally, the patent suggests performing a safety assessment on the culvert before acquiring main line information. This assessment involves identifying and determining the depth of silt, water level, and catchment range in the culvert. Based on the results of the safety assessment, the decision to proceed with the main line information acquisition is made.

Overall, this patented method provides a systematic approach to trace pollution at drainage outlets of culverts, helping identify and locate the sources of pollution.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.