Blast furnace stock rod standby position detection system

The utility model discloses a standby position detection system for a stock rod of a blast furnace. The detection system comprises an absolute value encoder, a master controller and a control system, the absolute value encoder is coaxially connected with the stock rod winding drum, and the absolute value encoder is further connected with the control system through a bus or a hard wiring; the stock rod winding drum is connected with a stock rod heavy hammer through a stock rod chain; a photoelectric sensing switch is arranged on the master controller, the master controller is coaxially connected with the stock rod winding drum, and the master controller is further connected with the control system through a bus or a hard wiring. And defining each limit position to a specific position corresponding to the absolute value encoder by utilizing the feedback value of the absolute value encoder to assist the limitation of each limit position. In this way, encoder limiting and master controller limiting can be used sy