Counting machine and methods of counting items
View Patent ↗In some embodiments, a counting machine may include a counting area configured to count a plurality of items. The counting area may include a fixed pressure plate, a movable pressure plate, and one or more sensors configured to measure the distance between the fixed pressure plate and the movable pressure plate, and a processor configured to determine the number of items in the counting area by comparing a sampled thickness value to the thickness of the items located between the fixed pressure plate and the movable pressure plate.
1. A counting machine comprising:
a counting area configured to count a plurality of items, the counting area comprising:
a fixed pressure plate;
a pressure sensor assembly; and
a movable pressure plate;
one or more sensors configured to measure the distance between the fixed pressure plate and the movable pressure plate to measure the thickness of the plurality of items;
a motor configured to actuate the movable pressure plate to apply a pre-defined force to the plurality of items; and
a processor configured to determine the number of items in the counting area by:
using the motor, moving the movable pressure plate toward the plurality of items until the pressure sensor assembly indicates that the pre-defined force has been reached;
determining the number of items by comparing a sampled thickness value to the thickness of the items located between the fixed pressure plate and the movable pressure plate, wherein the counting machine is configured to automatically request recalibration of the sampled thickness value at a predetermined time interval; and
retracting the movable pressure plate away from the plurality of items after the number of items has been determined.
2. The counting machine of claim 1 , wherein the movable pressure plate is actuatable by a control signal sent by the processor.
3. The counting machine of claim 1 , wherein the movable pressure plate is actuatable by a user.
4. The counting machine of claim 1 , wherein the thickness of the items located between the fixed pressure plate and the movable pressure plate is measured at a predefined force.
5. The counting machine of claim 1 , wherein the sampled thickness value is determined by providing a known number of items to the processor and measuring the thickness of the known number of items in the counting area.
6. The counting machine of claim 5 , wherein the sampled thickness value is an average value of two or more measurements.
7. The counting machine of claim 1 , wherein the sampled thickness value is stored by the processor.
8. The counting machine of claim 1 , further comprising:
a weight scale; and
a user interface,
wherein the processor is configured to use the user interface to provide a count of items placed on the weight scale based on a sampled weight value.
9. The counting machine of claim 1 , wherein the predetermined force is automatically determined based on the type of item to be counted.
10. A method of counting items using a counting machine having a counting area, one or more sensors configured to measure distance, a motor configured to actuate the movable pressure plate, and a processor, the counting area including a fixed pressure plate, a pressure sensor assembly, and a movable pressure plate, the method comprising:
receiving a plurality of items between the fixed pressure plate and the movable pressure plate in the counting area of the counting machine,
using the processor, determining the number of items in the counting area by:
using the motor, moving the movable pressure plate toward the plurality of items until the pressure sensor assembly indicates that the pre-defined force has been reached;
determining the number of items by comparing a sampled thickness value to the thickness of the items located between the fixed pressure plate and the movable pressure plate, wherein the counting machine is configured to automatically request recalibration of the sampled thickness value at a predetermined time interval; and
retracting the movable pressure plate away from the plurality of items after the number of items has been determined.
11. The method of claim 10 , further comprising generating the sampled thickness value based on at least one measurement of the thickness of a known number of items.
12. The method of claim 11 , wherein the sampled thickness value is generated by averaging a plurality of measurements.
13. The method of claim 10 , wherein the sampled thickness value is saved from a previous measurement.
14. The method of claim 10 , wherein the movable pressure plate is electronically actuatable by the counting machine and wherein the counting machine actuates the movable pressure plate and measures the thickness of the plurality of items.
15. The method of claim 10 , wherein the plurality of items comprise either paper labels or fabric labels.
16. The method of claim 10 , wherein the plurality of items comprise radio-frequency identification (“RFID”) tags, and wherein the measurement is performed using a predefined force that is sufficiently low to avoid damaging the RFID tags.
17. The method of claim 10 , wherein the number of items is determined using the method within 10 seconds.
18. The method of claim 10 , wherein the counting machine further comprises a weight scale and a user interface, the method further comprising:
receiving the plurality of items on the weight scale,
measuring the weight of the plurality of items; and
determining the number of items based on the weight of the plurality of items and a sampled weight value.
19. The method of claim 18 , further comprising generating the sampled weight value based on at least one measurement of the weight of a known number of items.
20. The method of claim 18 , wherein the sampled weight value is generated by averaging a plurality of measurements.
21. The method of claim 10 , wherein the predetermined force is automatically determined based on the type of item to be counted.