1. A chemical agent cleaning method, in which a product is immersed into a chemical agent in a chemical agent rinse tank, the method comprising the following steps:
providing the chemical agent from a chemical agent storing tank to the chemical agent rinse tank, wherein the chemical agent storing tank is disposed in a position lower than that of the chemical agent rinse tank;
storing the chemical agent overflowed from the chemical agent rinse tank in an overflow tank temporarily; and
refluxing the chemical agent from the overflow tank to the chemical agent storing tank at a time point when an amount of the chemical agent stored in the overflow tank arrives at a first setting value, which is at a position lower than the upper end portion of a wall of the overflow tank, and ceasing the chemical agent to reflux from the overflow tank to the chemical agent storing tank, and maintaining the chemical agent being stored in the overflow tank at a time point when the amount of the chemical agent stored in the overflow tank arrives at a second setting value due to the refluxing of the chemical agent, which is at a position lower than the first setting value.
2. The chemical agent cleaning method as claimed in claim 1, wherein the position of the amount of the chemical agent stored in the overflow tank is lower than the upper end portion of the wall of the overflow tank, and the chemical agent cleaning method comprises the following step:
, ceasing the operation of each step above, so as to prevent the chemical agent from overflowing out of the overflow tank at a time point when the amount of the chemical agent stored arrives at a third setting value, which is at a position higher than the first setting value.
3. The chemical agent cleaning method as claimed in claim 2, wherein the position of the first setting value is higher than that of the second setting value, and lower than the upper end portion of the wall of the overflow tank and the position of the third setting value.
4. The chemical agent cleaning method as claimed in claim 3, wherein the position of the second setting value is set to be near a height of the liquid level at which spiral vortexes are generated in the chemical agent in the overflow tank.
5. The chemical agent cleaning method as claimed in claim 1, comprising the following steps:
stopping the operation of each step above and supplementing pure water to the chemical agent storing tank at a time point when the amount of the chemical agent stored in the chemical agent storing tank arrives at a fourth setting value, which is at a position at which no bubbles floating in the chemical agent storing tank is mixed into the chemical agent provided to the chemical agent rinse tank from the chemical agent storing tank.
6. A chemical agent cleaning apparatus, in which a product is immersed into a chemical agent to be cleaned, comprising:
a chemical agent rinse tank, for storing a chemical agent for cleaning the product;
an overflow tank, for temporarily storing the chemical agent overflowed from the chemical agent rinse tank;
a chemical agent storing tank, disposed in a position lower than those of the chemical agent rinse tank and the overflow tank, for storing the chemical agent provided to the chemical agent rinse tank, and storing the chemical agent refluxed from the overflow tank;
a first detecting means, for detecting that the amount of the chemical agent stored in the overflow tank has reached a first setting value, which is at a position lower than the upper end portion of a wall of the overflow tank;
a second detecting means, for detecting that the amount of the chemical agent stored in the overflow tank has reached a second setting value, which is at a position lower than that of the first setting value;
a controlling means, for allowing the chemical agent to reflux from the overflow tank to the chemical agent storing tank according to a detection signal from the first detecting means, and allowing the chemical agent to stop refluxing from the overflow tank to the chemical agent storing tank according to a detection signal from the second detecting means, and maintaining the chemical agent being stored in the overflow tank.
7. The chemical agent cleaning apparatus as claimed in claim 6, comprising a third detecting means, which detects the amount of the chemical agent stored in the overflow tank at the position at the upper end portion of the wall of the overflow tank has reached a third setting value which is in a position higher than that of the first setting value, for stopping the chemical agent from flowing back, and preventing the chemical agent from overflowing out of the overflow tank.
8. The chemical agent cleaning apparatus as claimed in claim 7, wherein the position of the first setting value is higher than that of the second setting value, and lower than the upper end portion of the wall of the overflow tank and the position of the third setting value.
9. The chemical agent cleaning apparatus as claimed in claim 6, wherein the position of the second setting value is set to be higher than a level near a height of the liquid level at which spiral vortexes are generated in the chemical agent of the overflow tank.
10. The chemical agent cleaning apparatus as claimed in claim 6, comprising a fourth detecting means, wherein the operation of each step above stops, and a supply of pure water to the chemical agent storing tank commences at a time point when the amount of the chemical agent stored in the chemical agent storing tank arrives at a fourth setting value, which is at a position where no bubbles floating in the chemical agent storing tank is mixed into the chemical agent provided to the chemical agent rinse tank from the chemical agent storing tank.
11. The chemical agent cleaning apparatus as claimed in claim 6, comprising the third detecting means and the fourth detecting means,
wherein the third detecting means detects that the amount of the chemical agent stored in the overflow tank at a position lower than the upper end portion of the wall surface of the overflow tank has reached the third setting value which is at a position higher than that of the first setting value, for stopping the chemical agent from flowing back, and preventing the chemical agent from overflowing out of the overflow tank;
wherein the fourth detecting means detects that the amount of the chemical agent stored in the overflow tank has reached the fourth setting value, which is at a position of which no bubbles floating in the chemical agent storing tank is mixed into the chemical agent provided to the chemical agent rinse tank from the chemical agent storing tank, for stopping the chemical agent from flowing back and starting to supply pure water to the chemical agent storing tank; and
wherein a time point at which the third detecting means detects the third setting value is set to be substantially the same as a time point at which the fourth detecting means detects the fourth setting value.
12. The chemical agent cleaning apparatus as claimed in claim 6, wherein the controlling means is used for performing an onoff control for starting or stopping the reflux of the chemical agent, and a switch valve, disposed in the flow path for allowing the chemical agent to reflux from the overflow tank to the chemical agent storing tank.
13. The chemical agent cleaning apparatus as claimed in claim 6, wherein the apparatus is driven and controlled by the control means, and a circulating pump provides the chemical agent from the chemical agent storing tank to the chemical agent rinse tank.
14. The chemical agent cleaning apparatus as claimed in claim 6, wherein the product is a hard disk or an optical disk.
15. The chemical agent cleaning apparatus as claimed in claim 6, wherein the chemical agent rinse tank is an ultrasonic rinse tank.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A computer system including:
a memory for storing program instructions;
a processor that is configured to execute the program instructions in order to:
receive LiDAR return data from a geographic region of interest;
receive planting data that indicates the locations where trees have been planted in the region of interest; and
filter the LiDAR return data to remove or ignore data that are not within a predetermined distance of the locations where the planting data indicates that trees have been planted.
2. The computer system of claim 1, wherein the planting data is GPS data.
3. The computer system of claim 2, wherein the GPS data is received from a machine that plants the trees in the region of interest.
4. The computer system of claim 2, wherein the GPS data is received from a machine that prepares a plot for the planting of trees.
5. The computer system of claim 1, wherein the planting data is digitized data obtained from aerial images of the geographic region of interest.
6. The computer system of claim 1, wherein the processor is configured to execute instructions in order to remove or ignore LiDAR return data that are not within a buffer zone of the locations where the planting data indicates the trees have been planted.
7. A method of operating a computer system to process LiDAR return data by:
receiving LiDAR return data from a geographic region of interest;
receiving planting data indicative of the locations where trees have been planted in the region of interest; and
filtering the LiDAR return data to remove or ignore data that are not within a predetermined distance of the locations where the planting data indicates that trees have been planted prior to analyzing the LiDAR return data to identify trees.
8. A non-transitory computer readable media with instructions stored thereon that are executable by a computer system to process LiDAR return data by:
receiving LiDAR return data from a geographic region of interest;
receiving planting data indicative of the locations where trees are planted in the region of interest; and
filtering the LiDAR return data to remove or ignore data that are not within a predetermined distance of the locations where the planting data indicates that trees are planted.
9. A computer system including:
a memory for storing program instructions;
a processor that is configured to execute the program instructions in order to:
receive LiDAR return data from a geographic region of interest;
receive planting data indicative of the locations where trees have been planted in the region of interest; and
filter the LiDAR return data to remove or ignore LiDAR data that are within a predetermined distance of the locations where the planting data indicates that the trees have been planted prior to analyzing the LiDAR data to identify other vegetation between the planted trees.
10. A computer system including:
a memory for storing program instructions;
a processor that is configured to execute the program instructions in order to:
receive LiDAR return data from a geographic region of interest;
receive planting data that indicates the GPS locations where trees have been planted in the region of interest; and
filter the LiDAR return data to identify LiDAR return data that are received from or near the locations where it is expected that trees have been planted.
11. The computer system of claim 9, wherein the processor is configured to execute instructions to analyze the filtered LiDAR return data for trees that have been planted in the geographic region of interest.