1. A network comment collection method, comprising:
obtaining a webpage entry link address;
determining whether there are N network comments on a webpage corresponding to the webpage entry link address, wherein N is a positive integer;
determining whether there are M network comments satisfying a collection condition among the N network comments when there are the N network comments, wherein M is a positive integer less than or equal to N; and
collecting the M network comments when there are the M network comments satisfying the collection condition.
2. The method according to claim 1, wherein obtaining the webpage entry link address specifically comprises:
obtaining a subject webpage where a subject to which the N network comments relate is posted;
obtaining a feature code of the subject webpage;
obtaining a feature code of a channel where the subject is posted; and
splicing the feature code of the subject webpage and the feature code of the channel to obtain the webpage entry link address.
3. The method according to claim 2, further comprising: refreshing the webpage entry link address periodically.
4. The method according to claim 1, further comprising: deleting the webpage entry link address when the network comments on the webpage have not been updated for a predetermined period of time.
5. The method according to claim 1, wherein determining whether there are M network comments satisfying the collection condition among the N network comments specifically comprises: computing a difference between N and P, and if N is greater than P, then indicating that there are newly added network comments, the number of which is the difference M between N and P, wherein P is the number of network comments in last access to the webpage.
6. The method according to claim 5, further comprising: counting the number L of network comments included in a current page of the webpage, and if L is less than M, then counting the number of pages to be turned and extracting a page-turn link corresponding to the number of pages, wherein L is a positive integer.
7. The method according to claim 5, further comprising: comparing each of the N network comments respectively with each of the P network comments, and if there are inconsistent comparison results, then extracting the M network comments with the inconsistent comparison results.
8. The method according to claim 1, wherein determining whether there are M network comments satisfying the collection condition among the N network comments specifically comprises: comparing each of the N network comments respectively with each of the P network comments, and if there are inconsistent comparison results, then determining the M network comments with the inconsistent comparison results as the network comments satisfying the collection condition.
9. The method according to claim 1, further comprising: storing contents of the extracted M network comments into a storage unit different from the webpage.
10. A network comment collection system, comprising:
an entry link obtaining component configured to obtain a webpage entry link address;
a first determining component configured to determine whether there are N network comments on a webpage corresponding to the webpage entry link address, wherein N is a positive integer;
a second determining component configured to determine whether there are M network comments satisfying a collection condition among the N network comments when there are the N network comments, wherein M is a positive integer less than or equal to N; and
a content collecting component configured to collect the M network comments when there are the M network comments satisfying the collection condition.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A borehole tool comprising a tool body having an anchoring mechanism, the anchoring mechanism comprising:
a) a drive mechanism including a motor, a drive shaft and a clutch mechanism;
b) an anchoring arm moveable between first and second positions relative to the tool body; and
c) a push rod extending through the clutch mechanism connecting the anchoring arm to the drive mechanism; the push rod engaging a spring which acts to bias the arm into the first position, and driveably connecting the drive mechanism through the clutch such that the arm can be moved between the first and second positions.
2. A tool as claimed in claim 1, wherein the clutch mechanism comprises a collar having a number of balls which engage grooves in the push rod to allow the drive mechanism to move the arm.
3. A tool as claimed in claim 2, wherein the clutch mechanism comprises a spring-loaded retaining ring which causes the balls to be held in a driving position in the grooves when engaged by the collar.
4. A tool as claimed in claim 1, wherein the drive shaft comprises a drive screw which acts on the clutch mechanism by means of a nut to transmit drive to the push rod.
5. A tool as claimed in claim 1, wherein the spring comprises a coil spring surrounding at least part of the drive mechanism and wherein the drive mechanisms, push rod and spring are all located within the tool body.
6. A tool as claimed in claim 1, wherein the first position of the arm has the arm extending away from the tool body so as to engage a wall of a borehole in which the tool is positioned, and the second position of the arm has the arm lying close to the tool body.
7. A tool as claimed in claim 6, wherein the drive mechanism is used to control the movement of the arm under the influence of the spring between the first and second positions.
8. A tool as claimed in claim 7, wherein the spring and the drive mechanism operate so as to cause the arm to engage the borehole wall and force the tool body against the opposite side of the borehole wall, the drive mechanism serving to provide extra force to anchor the tool body against the borehole wall.
9. A tool as claimed in claim 6, wherein the drive mechanism can be reversed to disengage the clutch mechanism and remove the extra force from the arm such that it only engages the borehole wall under the influence of the spring.
10. A borehole tool comprising a tool body having an anchoring mechanism, the anchoring mechanism comprising:
a) a drive mechanism including a motor, a drive shaft and a clutch mechanism;
b) an anchoring arm moveable between first and second positions relative to the tool body; and
c) a push rod extending through the clutch mechanism connecting the anchoring arm to the drive mechanism through a link; the push rod engaging a spring which acts to bias the arm into the first position, and driveably connecting the drive mechanism through the clutch such that the arm can be moved between the first and second positions.
11. A tool as claimed in claim 10, wherein the clutch mechanism comprises a collar having a number of balls which engage grooves in the push rod to allow the drive mechanism to move the arm.
12. A tool as claimed in claim 11, wherein the clutch mechanism comprises a spring-loaded retaining ring which causes the balls to be held in a driving position in the grooves when engaged by the collar.
13. A tool as claimed in claim 10, wherein the drive shaft comprises a drive screw which acts on the clutch mechanism by means of a nut to transmit drive to the push rod.
14. A tool as claimed in claim 10, wherein the spring comprises a coil spring surrounding at least part of the drive mechanism and wherein the drive mechanisms, push rod and spring are all located within the tool body.
15. A tool as claimed in claim 10, wherein the first position of the arm has the arm extending away from the tool body so as to engage a wall of a borehole in which the tool is positioned, and the second position of the arm has the arm lying close to the tool body.
16. A tool as claimed in claim 15, wherein the drive mechanism is used to control the movement of the arm under the influence of the spring between the first and second positions, and can also act to further urge the arm to the first position so as to apply force to the borehole wall.
17. A tool as claimed in claim 16, wherein the spring and the drive mechanism operate so as to cause the arm to engage the borehole wall and force the tool body against the opposite side of the borehole wall, the drive mechanism serving to provide extra force to anchor the tool body against the borehole wall.
18. A tool as claimed in claim 15, wherein the drive mechanism can be reversed to disengage the clutch mechanism and remove the extra force from the arm such that it only engages the borehole wall under the influence of the spring.
19. A tool as claimed in claim 10, wherein the link comprises a cut-out area.
20. A tool as claimed in claim 10 wherein the link comprises a breakage area.
21. A tool as claimed in claim 10, further wherein the link comprises an orifice wherein the pivot connecting the anchor arm to the link is positioned.
22. A tool as claimed in claim 20, wherein the breaking area can be failed by operating the drive mechanism to provide a force on the push rod that is resisted by the force of an encumbered anchor arm, such that the resistance force imposed by the anchor jam fails the breakage area.
23. A tool as claimed in claim 22 wherein the anchor arm remains movable between a first and second position after the breaking area has been failed.
24. A link for connecting an anchoring arm to a borehole tool comprising at least one hole for affixing a fastener, an orifice for positioning a pivot, a cut-out area, and a breakage area.
25. A link as claimed in claim 24 comprising at least one hole for affixing a fastener and an orifice for positioning a pivot, wherein the orifice comprises said cut-out area and breakage area.
26. A borehole tool comprising a tool body having an anchoring mechanism, the anchoring mechanism comprising:
a) a drive mechanism including a motor, a drive shaft and a clutch mechanism;
b) an anchoring arm moveable between first and second positions relative to the tool body; wherein the anchor arm engages the borehole wall; and
c) a push rod connecting the anchoring arm to the drive mechanism; the push rod engaging a spring which acts to bias the arm into the first position, and driveably connecting the drive mechanism through the clutch such that the arm can be moved between the first and second positions; and
d) at least one measurement device.
27. A tool as claimed in claim 26 further comprising a link connecting the anchoring arm to the drive mechanism.
28. A tool as claimed in claim 26, wherein said measurement device measures contact of the anchor arm with the borehole.
29. A tool as claimed in claim 26, wherein said measurement device is a potentiometer.
30. A tool as claimed in claim 26, wherein measurement device determines force asserted by the anchor arm on the borehole wall.
31. A tool as claimed in claim 26, wherein said measuring device is a strain gauge.
32. A tool as claimed in claim 26, wherein said measuring device measures tool orientation.
33. A tool as claimed in claim 32, wherein said measuring device is a relative bearing measurement device.