The Design Of The Distributed Wireless Transmission System Of Shunting Work Requisition

Almost all large and industrial business enterprises all have own railroad conveyance system. Along with the railroad carrying capacity increase continuously, the quantity of shunting work also increases continuously. The original process of the shunting work depend on the artificial appeal completely to complete, informing the shunting work staff to carry on an operation through a wireless interphone notice ,and shunting work requisitions also completely is depend on in artificial to take to send. That arise speed slow, and permit mistakes, for example: because the personnel's pronunciation is not standard or the environment is full of yawp. The receiver may misunderstand and create the trouble during the process of order transfer. The old type interphone is too big. The accuracy is too low. The work appearance is unsteady etc. That restricts the transport efficiency badly, and threats railroad conveyance safety.Therefore, the thesis designed a kind of distributed wireless transmission system of shunting work requisition, which makes the shunting work more convenient, credibility. The system design according to the distributed design thought. It is divided in to three layer structures separately: chief shunting work center--- lower shunting work station--- vehicle equipment. The thesis emphasized to relate to the mode of wireless deliver on the layer of lower shunting work station--- vehicle equipments. It conducts wireless thoroughfare on the broadcasting station, and adopts the high credible CRC redundancy checkout technique. The thesis still emphasized to relate the software and hardware design of the vehicle equipment of this system. By the use of this system, shunting work personnel need not to return to shunting work center to receive the shunting work requisition before every shunting work operation. They can see and print the shunting work requisitions though the vehicle equipment. So it avoids inconvenience caused by weather and journey...etc. Moreover, the function of data saving of the system can record all shunting work requisition and the implement. We can browse the data and generate report forms to print at any time.The distributed wireless transmission system of shunting work requisition designed in the thesis has carried on a long-playing test in some steel and iron manufactory, and had been continuously perfected. It has carry out all designed functions and already been applied in actual production.