Shield constructs machine tunnelling speed detector

The utility model relates to a speed detection technical field especially is a shield constructs machine tunnelling speed detector, including set up in the shield construct stroke sensor on the machine oil cylinder bottom seat, with the PLC that the stroke sensor links to each other, the industrial computer that is connected with PLC, is PLC MCS95 8089PLC, the device still include rotary encoder,is rotary encoder one end passed through counting pulse and is connected in MCS95 8089PLC's high speed input mouth HIS. 1 end, monostable circuit's I input is connected to the rotary encoder other end, monostable circuit I connects RS trigger port, the RS trigger output signal connect in MCS95 8089PLCP0.4 the end, does the RS trigger pass through monostable circuit II and connects in MCS95 8089PLC's the outer well broken ends of fractured bone, the utility model has the characteristics of with low costs, sampling frequency is high, data collection is accurate, the operation is reliable, the simple operation. 本实用新型涉及速度