Sampling system for granular materials with sample extractor and sample divider
A material sampling system for obtaining a plurality of substantially similar samples of granular material, such as grain or other crop material, from a load of granular material is provided. The system can include a sample extractor for obtaining a sample portion of granular material, a sample divider operative to divide the sample portion of granular material into a plurality of smaller samples of granular material in a plurality of sample containers and a sample transfer conduit for transferring the sample of granular material from the sample extractor to the sample divider. The sample portions can be taken at regular sample time intervals throughout the entire load of granular material to get an accurate representation of the granular material and information about the samples in the sample containers can be obtained by the system while it is obtaining the samples and this information stored for later use and display.
1. A material sampling system for obtaining a plurality of substantially similar samples of granular material from a load of granular material, the system comprising:
a sample extractor for obtaining a sample portion of granular material;
a sample divider operative to divide the sample portion of granular material into a plurality of smaller samples of granular material in a plurality of sample containers;
a sample transfer conduit for transferring the sample of granular material from the sample extractor to the sample divider; and
a sampling processor module operative to control the operation of the sample extractor and the sample divider, the sampling processor module comprising: at least one processing unit; and a computer readable memory containing program instructions operative to control an operation of the sampling processor module, wherein the programming instructions are operative to:
receive input indicating a size of load;
determine a flowrate of granular material through the sample extractor;
determine a sample time interval;
while flow is being sensed passing through the sample extractor, wait for the sample time interval to pass and then obtain a sample portion; and
continue to take sample portions after each sample time interval has passed while flow of granular material passing through the sample extractor is being sensed until all of the sample portions have been taken,
wherein the sample time interval is determined by using the size of the load, the determined flowrate of granular material and a number of sample portions to be taken.
2. The material sampling system of claim 1 wherein the sample extractor comprises:
an open top;
an open bottom;
body having a passage running therethrough;
a sampling member connected to a shaft provided in the passage, a first end of the sampling member connected to the shaft and the sampling member extending from the first end to a second end; and
at least one opening in the cylindrical body in a path of the rotating second end of the sampling member, wherein the at least one opening is operatively connected to the sample transfer conduit.
3. The material sampling system of claim 2 wherein the second end of the sampling member is positioned approximate an inner wall of the cylindrical body.
4. The material sampling system of claim 2 wherein the sampling member has a u-shaped cross-section forming a channel.
5. The material sampling system of claim 2 wherein the sample extractor further comprises a motor to rotate the shaft and cause the sample member to rotate through a cross, section of the passage.
6. The material sampling system of claim 2 wherein there are two sampling members that rotate past a first opening and a second opening in the wall of the cylindrical body.
7. The material sampling system of claim 6 wherein the first opening and the second opening are positioned approximately 180° from each other.
8. The material sampling system of claim 6 wherein the sample member slopes downward from the first end of the sample member to the second end of the sample member.
9. The material sampling system of claim 6 wherein a first conduit is connected between the first opening and the sample transfer conduit and a second conduit is connected between the second opening and the sample transfer conduit.
10. The material sampling system of claim 2 wherein the sample extractor further comprises a position sensor to indicate when the sample member is in a predetermined position.
11. The material sampling system of claim 10 wherein a deflector is provided in the passage positioned over the predetermined position of the sample member.
12. The material sampling system of claim 10 wherein a first opening and a second opening are positioned under the deflector.
13. The material sampling system of claim 1 wherein the sample divider comprises:
a collection container downstream from the sample transfer conduit for collection granular material;
a diverter operatively connected to the collection container; and,
a plurality of container conduits provided downstream of the diverter and each container conduit leading to a single sample container.
14. The material sampling system, of claim 13 wherein the sample divider further comprises a metering wheel positioned between the collection container and the diverter.
15. The material sampling system of claim 1 wherein the sampling processor module further comprises: an input interface; and an output interface.
16. The material sampling system of claim 15 wherein the input interface is connected to a flow sensor of the sample extractor so that the sampling processor module receives signals from the flow sensor.
17. The material sampling system of claim 15 wherein the input interface is operatively connected to a temperature sensor and a moisture sensor.
18. The material sampling system of claim 15 wherein the output interface is operatively connected to a motor on the sample extractor to control when the motor is in operation and the at least one sample member is rotated in the sample extractor.
19. The material sampling system of claim 15 wherein the input interface is operatively connected to a position sensor on the sample extractor.
20. The material sampling system of claim 1 wherein the sampling processor module further comprises a wireless connection.
21. The material sampling system of claim 20 wherein the sampling processor module is at least one of: a Bluetooth connection; and an 802.11 connection.
22. The material sampling system of claim 1 wherein the sample divider splits the sample into more than two sample containers.
23. The material sampling system of claim 22 wherein the sample divider splits the sample into six sample containers.
24. The material sampling system of claim 1 wherein the programming instructions are operative to control the sample extractor and the sample divider to obtain samples of the granular material passing through the sample extractor at regular time intervals so each sample container contains granular material from throughout the load.
25. The sampling system of claim 1 wherein time for the sample time interval is not counted when flow is not being sensed passing through the sample extractor.
26. The sampling system of claim 1 wherein the sampling processor module further comprises an output interface operatively connected to a motor on the sample extractor, and wherein the sample portion is obtained by using the output interface to send a signal to the motor of on the sample extractor.
27. The sampling system of claim 1 wherein the program instructions are operative to:
determine a flowrate of granular material through the sample extractor;
determine an amount of time granular material passes through the sample extractor; and
using the flowrate of granular material through the sample extractor and the amount of time granular material passes through the sample extractor to approximate an amount of granular material that has passed through the sample extractor.
28. The sampling system of claim 1 wherein the program instructions are operative to:
receive input indicating unique identifiers on each of the plurality of sample containers;
receive input indicating information about the plurality of samples of granular material;
obtain sample portions of granular material passing through the sample extractor for the load of granular material and collect information about the sample portions;
using the information about the plurality of samples of granular material and information collected when the sample portions are obtained to create and populate a sample record; and
associating the sample record with the unique identifiers.
29. The sampling system of claim 28 wherein the input indicating unique identifiers on each of the sampling containers read, from an RED tag.
30. The sampling system of claim 28 wherein the input indicating information about the plurality of samples of granular material is entered into the sampling processor module through an interface device.
31. The sample system of claim 28 wherein the programs instructions are further operative to transmit the storage record to a remote server.
32. A system for obtaining a plurality of substantially similar samples of granular material, the system comprising:
a material conveyor comprising:
an intake end;
a discharge end; and
a conveying section connecting the intake end and the discharge end, and a material sampling system comprising:
a sample extractor for obtaining a sample of granular material, the sample extractor positioned below the discharge end of the material conveyor;
a sample divider operative to divide the sample of granular material into a plurality of smaller samples of granular material in a plurality of sample containers; and
a sample transfer conduit for transferring the sample of granular material from the sample extractor to the sample divider; and
a sampling processor nodule operative to control the operation of the sample extractor and the sample divider, the sampling processor module comprising: at least one processing unit; and a computer readable memory containing program instructions operative to control an operation of the sampling processor module, wherein the programming instructions are operative to:
receive input indicating a size of load;
determine a flowrate of granular material through the sample extractor;
determine a sample time interval;
while flow is being sensed passing through the sample extractor, wait for the sample time interval to pass and then obtain a sample portion; and
continue to take sample portions after each sample time interval has passed while flow of granular material passing through the sample extractor is being sensed until all of the sample portions have been taken,
wherein the sample time interval is determined by using the size of the load, the determined flowrate of granular material and a number of sample portions to be taken.
33. The system of claim 32 wherein the conveying section is an auger.