Intermittent motion scale conveyor

A checkweighing operation device for accepting or rejecting an object based on weight, comprising:

• a weighing platform, for determining a weight of an object bearing upon the weighing platform and to output a weight signal proportional to the weight of the object;
• a conveyor system, having a scale conveyor arranged on the weighing platform, comprising an endless loop of conveyor belt that passes over a top surface of the weighing platform, such that the endless loop of conveyor belt is arranged to be driven in a first direction or in a second direction that is opposite to the first direction;
• a means for detecting the presence or absence of an object on the endless loop of conveyor belt, operative to output a “presence” or “absence” signal;
• and
• a controller, in communication with each of:
• the weighing platform, the conveyor system, and the means for detecting the presence or absence, the controller operative to:
• receive the “presence” signal from the means for detecting;
• receive the weight signal from the weighing platform;
• compare the weight signal to a predetermined range of acceptable weight;
• and
• if the weight signal is within the predetermined range, accept the object by causing the conveyor belt to be driven in the first direction sufficiently to remove the object from the scale conveyor;
• otherwise, reject the object by causing the conveyor belt to be driven in the second direction sufficiently to remove the object from the scale conveyor.