Pollution source tracing is the pain spot of the industry too. Nowadays, technology had developed and there are many advanced equipment being used to detect water pollution sources. They include underwater optical camera, underwater imaging sonar, side scan sonar, water quality sampling (by analyzing water temperature, pH value, dissolved oxygen, turbidity, COD), etc.
Environment：Quite complicated. Water qulity is bad and smell pungent stinky. First of all, the locan Environment Protection Department is urgent to find out the polution source, then they can make out resoving method. So that they are able to realize the sustainable development of ecological environment.
1）Surveying the whole 9km river, 6km of which is along the Industry Zone area. The current is very slow. Most of the river bank is hard and some is soft. River is narrow and two side is shallow full of seaweed. It is not convenient to dirve traditional motor boat. So unmanned surface vehicle is a good choice.
2）In order to locate the hidden pipeline quickly and accurately, it is quite important to select the right equipment to be installed on the USV. They could not be too heavy and should be low power consumption. Furthermore, the water is turbid and visibility is poor. So the optical camera equipment cannot be used. While water quality sampling can only analysis the pollution situation of the water nearby, but can not accurately find the location of hidden pipe. Under this kind of environmental condition, only the side scan sonar is able to meet the requirements of the project.
1) The USV selected is a small inflatable boat. It has many feature of light weight, easy for transportation, big payload, long durability and stable driving attitude.
2) The side scan sonar used comes from Hydro-Tech ES900, which is perfect for second development and integraion into all kinds of small unmanned platforms, including USV, ROV etc. Since is has many good advantages of clear image, manual automatic identification, strong anti-interference ability, easy operation and simple structure and friedly compatibility and so on.
Suspected pipe 3
The operating engineers on the shore can monitor the working state of the USV through remote communication technology. The underwater side scan sonar realizes the accurate detecting and positioning of the underwater hidden pipe through the real-time scanning sonar image, so that the hidden pipe has nowhere to hide. At the same time, it also makes the troubleshooting work safer and more efficient.