Peak weight detector and method
A peak weight detecting system and method which analyzes signals generated by a load cell indicating a load within a container. The signal indicates a weight which is compared with a stored peak weight. If the new weight exceeds the stored weight, the new weight is verified by comparison to a weight indicated by a second signal from the load cell. If the weights indicated by the first and second signals are within a specified percentage of each other, the weight indicated by the first signal may displace the stored peak weight and may be stored as a new peak weight.
1. A method of detecting a peak weight, the method comprising:
providing a mobile chassis, a load-carrying container mounted to the chassis, a load cell positioned between the chassis and the container, the load cell configured to generate an electronic signal corresponding to the weight of the container including the load, and a processor configured to receive the signal from the load cell;
the load cell generating a signal based on the weight of the container;
the processor receiving the signal from the load cell;
the processor comparing the signal received against a previously stored signal corresponding to a peak weight of the container;
the processor stores the signal received from the load cell if the signal indicates a weight of the container greater than the previously stored peak weight signal;
the processor verifying the newly stored peak weight signal by comparing the newly stored peak weight signal with a second signal from the load cell at predetermined time interval after the newly stored peak weight signal is received;
the processor displacing the previously stored peak weight signal with the newly stored peak weight signal if the second signal corresponds with a weight that is within a predetermined percentage of the newly stored peak weight signal.
2. The method of claim 1 , wherein the predetermined time interval is ten seconds.
3. The method of claim 1 , wherein the predetermined percentage is 95%.
4. The method of claim 1 , wherein the container has a specified load capacity and the processor only stores a peak weight signal that is a predetermined amount above the load capacity.
5. The method of claim 4 , wherein the predetermined amount is 2.5%.
6. The method of claim 1 , wherein the processor is configured to store signals corresponding to a plurality of peak weights indicated by signals from the load cell and verified by a second signal.
7. The method of claim 6 , wherein the processor is configured to store the signals corresponding to the five greatest peak weights.
8. The method of claim 1 , wherein the processor stores a time stamp with the peak weight signal, the time stamp indicating when the peak weight signal was received.
9. A mobile peak weight detector comprising:
a chassis;
a load-carrying container mounted to the chassis;
a load cell positioned between the chassis and the container, capable of generating signals corresponding to a weight of the container and any loads placed in the container;
a processor electronically connected to the load cell and including storage for a signal corresponding to a peak weight of the container and any load placed in the container;
the processor configured to receive signals from the load cell, to compare a first signal corresponding with a peak weight greater than the peak weight corresponding to the stored peak weight signal with a second signal from the load cell at a predetermined time interval after the first signal, and to displace the stored peak weight signal with the first signal if the second signal indicates a weight within predetermined percentage of the peak weight indicated by the first signal.
10. The peak weight detector of claim 9 , wherein the processor includes memory to store a plurality of peak weight signals.
11. The peak weight detector of claim 10 , wherein the processor is configured to store signals corresponding to the five greatest peak weights detected.
12. The peak weight detector of claim 9 , wherein the second signal corresponds to a weight within 95% of the peak weight corresponding to the first signal.
13. The peak weight detector of claim 9 , wherein the container has a predetermined load capacity and the processor only stores signals corresponding to peak weights that are a predetermined percentage greater that the load capacity of the container.
14. The peak weight detector of claim 13 , wherein the processor only stores peak weight signals corresponding to weights which are more than 2.5% greater than the load capacity.
15. The peak weight detector of claim 9 , wherein the chassis is a trailer chassis.
16. A method of detecting a peak weight, the method comprising:
generating a first weight signal corresponding to the weight of a load in a container;
comparing the first weight signal against a previously stored signal corresponding to a prior peak weight of the load;
if the first weight signal indicates a weight of the container greater than the weight of the previously stored peak weight signal, storing the first weight signal;
accepting a second weight signal corresponding to the weight of the load at predetermined time interval after the newly stored peak weight signal is received;
verifying the newly stored peak weight signal by comparing the newly stored peak weight signal with the second weight signal;
displacing the previously stored peak weight signal with the newly stored peak weight signal if the second weight signal corresponds with a weight that is within a predetermined range of the newly stored peak weight signal.
17. The method of claim 16 , wherein the predetermined time interval is ten seconds.
18. The method of claim 16 , wherein the predetermined range is 95%.
19. The method of claim 16 , wherein the container has a specified load capacity and the processor only stores a peak weight signal that is a predetermined amount above the load capacity.
20. The method of claim 19 , wherein the predetermined amount is 2.5%.
21. The method of claim 16 , further comprising storing signals corresponding to a plurality of peak weights indicated by signals from the load cell and verified by a second signal.
22. The method of claim 16 , further comprising storing the signals corresponding to the five greatest peak weights.
23. The method of claim 16 , further comprising storing a time stamp with the peak weight signal, the time stamp indicating when the peak weight signal was received.
24. A process for detecting a peak weight, the process comprising:
accepting a first weight signal from a load cell corresponding to the weight of a load in a container;
accepting a second weight signal from the load cell corresponding to the weight of the load at predetermined time interval after the first weight signal is accepted;
comparing the first weight signal against the second weight signal, rejecting both signals if the second weight signal is at least a predetermined percentage less than the first weight signal, and restarting the process;
if the second weight signal is not less than the first weight signal by at least the predetermined percentage, comparing the first weight signal to a previously stored signal corresponding to a prior peak weight of the load; and
if the first weight signal indicates a weight of the container greater than the weight of the previously stored peak weight signal, displacing the previously stored peak weight signal with the newly stored peak weight signal.
25. The method of claim 24 , wherein the predetermined time interval is ten seconds.
26. The method of claim 24 , wherein the predetermined percentage is 95%.
27. The method of claim 24 , further comprising storing signals corresponding to a plurality of peak weights indicated by signals from the load cell and verified by a second signal.
28. The method of claim 24 , further comprising storing the signals corresponding to the five greatest peak weights.
29. The method of claim 24 , further comprising storing a time stamp with the peak weight signal, the time stamp indicating when the peak weight signal was received.