Class: Class Three, Grade One.

Instructor: Zhang Yuhai

Project leader: Shi Xinwei

Team members: Peng Yushan and Shi Xinwei

In this study, our research topic-the research and production of electrostatic dust removal blackboard eraser, through consulting network materials and various books and materials, understood the principle of electrostatic dust removal, thus designed a blackboard eraser using electrostatic dust removal. Its great ideal is to protect the health of teachers from the harm of chalk dust, and our goal is: dust-free!

The research process is summarized as follows:

65438 1 month+February (preliminary understanding):

(1) Search the concept, generation principle and method of static electricity online; Disadvantages: the information is incomplete, mostly in general terms, and more is the method of eliminating static electricity;

(2) Further research, looking for some clear charts and text descriptions, and even related circuit design drawings; Disadvantages: It is found that there are such products on the market, which have been studied, discussed and improved, greatly reducing the innovation of this research topic.

February and January (looking for materials):

(1) Find the equipment needed for research and production: motors, wires, gears, metal bars, polyester cloth easy to grow in scenic spots, hard boxes, etc.

Disadvantages: the progress of material collection is slow, the effect is not ideal, and there is not a lot of material for research and production.

(2) Try to remove the necessary accessories from old toys and four-wheel drive vehicles, and make use of other wastes, such as plastics and foam products;

Disadvantages: small accessories and difficult operation.

March and February (assembled products):

(1) Assemble accessories according to the circuit diagram, make a prototype, and test and debug;

Disadvantages: far from the expected effect, the effect is not obvious.

(2) adjustment and transformation;

Disadvantages: the transformation failed to bring new changes.

In the end, scientific research and production ended in failure. Failure doesn't mean nothing. Similarly, we returned home with a full load. For us, the experience and lessons of failure, the courage of research and the spirit of exploration are priceless.

The revolution has not yet succeeded, comrades still need to work hard!