PURPOSE: To attenuate and stabilize a load vibration by a natural frequency of a load cell as quickly as possible and detect the weight precisely by connecting the load cell to a frame through a vibration damper provided on the other side.
CONSTITUTION: When a combined measuring device is operated, and an object to be measured is thrown into a measuring hopper, a load cell 7 supported in a cantilever form against a frame 2 by its throw-in energy is vibrated by its natural frequency first, and its detecting signal is inputted to a micro-computer. During this time, a base vibration is transferred and inputted unavoidably to the load cell 7 and a dummy load cell 7' through the base from the frame 2. Accordingly, a disturbance vibrating signal by throwing in the object to be measured from the measuring hopper, a base vibrating signal, and a weight signal of the object to be measured are joined and inputted in advance to a detecting signal detected and inputted by the load cell 7.
KITAGAWA KAZUMI
UTSUNOMIYA MICHITO
| JP54171368B |