Help me now i must write program control washing machine use RTX ,can give me some hints?
Why bullshit?
If you really are building a machine, then you have to figure out how to make the machine work. Then write a design. Then implement it. Real companies don't just stumble over a full specification for their next product - they write the specification themselves.
Figure out what a washing machine does - then write a pprogram that listens to the sensors and performs timed actions.
Not hard at all. Present the program together with a schematic for your washing machine. It is enough to have a LED for pumps, valves, ...
And when you do write your program - add error handling. How long to pump water before giving up on the level sensors and doing a safety-stop. And make sure you can't start the washing machine without closing it.