Asphalt mixing plant control system and data acquisition

Asphalt mixing plant control system and data acquisition

Composition of the system

System contains weighing transmitter, programmable logic controllers (PLC) and industrial control machine.

PLC module module (A/D), input/output modules (I/O) weighing sensor input signal display on the transmitter and then receives a/d module, I/O module external limit control relay, and action buttons, PLC and industrial computer connection management features.

Data acquisition

Sensor detection weight changes, will pressure changes into into 0~20 mV simulation volume output to said heavy variable sent display; with displayed of said heavy variable sent device will received of 0~20 mV simulation volume through module conversion (A/D) conversion into digital volume, will will operation results by digital filter Hou sent to LED digital tube displayed weight; while output standard signal of voltage (0~10V) or current signal (4~20 mA) transfer to PLC, PLC will received of standard signal through module conversion (A/ D) converted to digital value is obtained by computing the weight value and through the RS232 serial communication to the IPC.