CN202250235U - Dynamic monitor for coal walls of fully mechanized working surface - Google Patents
Dynamic monitor for coal walls of fully mechanized working surface Download PDFInfo
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- CN202250235U CN202250235U CN2011203435789U CN201120343578U CN202250235U CN 202250235 U CN202250235 U CN 202250235U CN 2011203435789 U CN2011203435789 U CN 2011203435789U CN 201120343578 U CN201120343578 U CN 201120343578U CN 202250235 U CN202250235 U CN 202250235U
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Abstract
The utility model provides a dynamic monitor for coal walls of a fully mechanized working surface. The monitor comprises a laser ranging unit, a data processing unit and a dynamic rotating unit, wherein the laser ranging unit is formed by a detection portion, an optical object lens and a data collecting opening, and the data processing unit is formed by a master control chip and an upper computer. Image point data of each point arranged on the surfaces of the coal walls of different heights can be automatically acquired through the laser ranging unit and the dynamic rotating unit, horizontal distances between each point and the monitor can be acquired after processing of the data processing unit, a convex-concave state diagram of the surfaces of the coal walls can be further drawn according to the data of the horizontal distances between each point and the monitor, and technicians can directly judge the portions of the surfaces of the coal walls where wall caving may occur in the coal walls according to the convex-concave state diagram. The dynamic monitor for the coal walls of the fully mechanized working surface avoids potential safety hazards during manual measurement, and the measured data are more accurate. Besides, the dynamic monitor is wide in applied range and high in practicality, and can greatly improve production efficiency of coal mining.
Description
Technical field
The utility model relates to the Safety of Coal Mine Production field, particularly relates to the fully-mechanized mining working rib dynamic monitor that is used for monitoring in real time fully-mechanized mining working coal wall caving state in a kind of process of coal mining.
Background technology
In the process of coal mining, for the coal wall, especially coal wall caving often takes place and caves in big, the softer fully-mechanized mining working in coal seam of mining height, is having a strong impact on the production efficiency in colliery and exploitation personnel's safety.
Existing coal wall caving phenomenon all through manual measurement, carry out statistical analysis again and draw.Yet, receive the restriction of natural environment, for long work plane, the manual measurement method often can't obtain the data of entire working surface; Even measure, receive subjectivity and measuring apparatus to influence data also accurate inadequately; The more important thing is that the original idea of monitoring coal wall caving phenomenon is to reduce danger coefficient in the process of coal mining enhancing productivity, and manual measurement method itself just exists great potential safety hazard, is a kind of extremely unscientific measuring method.
The utility model content
In view of the foregoing, it is a kind of in process of coal mining that the purpose of the utility model is to provide, and can monitor the fully-mechanized mining working rib dynamic monitor of fully-mechanized mining working coal wall caving phenomenon automatically.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of fully-mechanized mining working rib dynamic monitor is characterized in that, it comprises laser ranging unit and the data processing unit that is attached thereto;
This laser ranging unit comprises test section, the Liar that is connected with this test section and the data acquisition mouth of being located at this test section place;
This data processing unit comprises main control chip and the host computer that electrically connects with it;
Said test section comprises laser control circuit, the generating laser that is electrical connected successively, optics receiving unit, imageing sensor and imageing sensor drive circuit, and wherein, the input of this laser control circuit is connected with the output of said main control chip; The output of this imageing sensor drive circuit is connected with the input of said main control chip.
Said fully-mechanized mining working rib dynamic monitor also comprises dynamic rotary unit, and this dynamic rotary unit comprises rolling part and pitching part, and this rolling part is connected with said test section through this pitching part.
Said dynamic rotary unit also comprises wheel axle angular encoder, shaft-position encoder, and the output of this wheel axle angular encoder is connected with the input of said main control chip through this shaft-position encoder.
The output of said imageing sensor also is connected with the dynamic threshold level generative circuit that is made up of RC integrating circuit and voltage comparator.
Cone and narrow band pass filter are installed before the said optics receiving unit.
The advantage of the utility model is:
Potential safety hazard when 1) having avoided manual measurement can be obtained the accurate data on differing heights rib surface automatically, for the technician analyzes the coal wall caving phenomenon scientific basis is provided.
2) applied widely, practical, can improve the production efficiency of coal mining greatly.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the operating principle calcspar of the utility model;
Fig. 3 is the utility model practical implementation illustration;
Fig. 4 A, Fig. 4 B are the user mode figure of the utility model;
Fig. 4 C is the convex-concave aspect graph on side-looking rib surface;
Fig. 5 A, Fig. 5 B are that threshold level and ccd output signal concern sketch map;
Fig. 5 C is the utility model dynamic threshold level generative circuit sketch map.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the structural representation of the utility model.As shown in the figure, the disclosed fully-mechanized mining working rib of the utility model dynamic monitor comprises a laser ranging unit 1 and the data processing unit that is attached thereto.Said laser ranging unit 1 is made up of test section 10, the Liar 11 that is connected with this test section 10 and the data acquisition mouth 12 of being located at test section 10 places.Said data processing unit is located in the test section 10, and electrically connects with test section 10.Laser ranging unit 1 is used to measure the distance to this monitor of difference on the rib; Promptly; The laser of launching through test section 10 is through 11 dozens of certain some places on rib of Liar; The reverberation that forms in this point reflexes to data acquisition mouth 12 places through Liar 11 again, just can obtain on the rib this point after the light data that data acquisition mouth 12 will collect are handled through data processing unit to the distance of monitor.
Fully-mechanized mining working rib dynamic monitor is fixed on the trestle table 9 through support member 7.
The rib height of considering different collieries differs, and in order to monitor the coal wall caving phenomenon of differing heights rib, the fully-mechanized mining working rib dynamic monitor of the utility model also comprises a dynamic rotary unit 3.
This dynamic rotary unit 3 comprises rolling part 32 and the pitching part that is made up of pitching motor 30 and pitch axis 31.Wherein, rolling part 32 is provided with the power supply 4 to the monitor power supply, and rolling part 32 is embedded with a motor, and the top of rolling part 32 links to each other with gripper shoe 7 through bolt 8, and can laterally slide along the slideway on the gripper shoe 7.The bottom of rolling part 32 is connected with test section 10 through fixture 5 and pitching part, can use ball bearing 6 to be connected between test section 10 and the fixture 5, to reduce the frictional force of test section 10 in motion process.Under the driving of electric power; Rolling part 32 can laterally slide; Pitching motor 30 in the pitching part can drive pitch axis 31 and vertically move, and like this, laser ranging unit 1 just can be the fan-shaped rib surface that scans differing heights by laterally moving with vertically moving of pitching part of rolling part 32; Obtain the distance of rib surface difference, foundation is provided for analyzing the coal wall caving phenomenon to monitor.
Fig. 2 is the operating principle calcspar of the utility model.As shown in the figure, data processing unit mainly comprises main control chip 20 and the host computer 21 that electrically connects with it.Test section 10 comprises laser control circuit 13, the generating laser 14 that electrically connects successively; Optics receiving unit 15, CCD image sensor (Charge Coupled Device) 16 and CCD drive circuit 17; Wherein, the input of this laser control circuit 13 is connected with an output of main control chip 20; The two-way output of CCD drive circuit 17 is connected with the two-way input of main control chip 20.
Like Fig. 1 and Fig. 2; Main control chip 20 receives the instruction of host computer 21 to carry out the function of monitoring; Main control chip 20 starts laser control circuit 13 so that generating laser 14 emission laser according to the instruction of host computer 21; This laser radiation forms reverberation to certain the some place on the rib; Reflexing to data acquisition mouth 12 places once more through Liar 11 is received by optics receiving unit 15; Light data that receive and then on CCD image sensor 16, form the picture point data, CCD image sensor 16 is transferred to main control chip 20 with the picture point data of gathering through CCD drive circuit 17 afterwards, and main control chip 20 just can obtain the distance from the point of laser radiation on the rib to monitor after treatment.For ease of drawing out the convex-concave aspect graph on rib surface; Can be by main control chip 20 further according to this illuminated laser spot to the line (saying so accurately, this puts the line of data acquisition mouth) of monitor and the angle of vertical direction; Convert this illuminated laser spot the horizontal range of this illuminated laser spot to the distance of monitor, then these horizontal range data are transferred to host computer 21 is drawn out the rib surface after software processes convex-concave aspect graph to monitor.
Fig. 3 is the utility model specific embodiment sketch map.Like figure; Main control chip 20 is selected the AT89C2051 single-chip microcomputer for use, the optional TCD1208AP chip of CCD image sensor, and effective pixel number of this chip is 2160; Pixel dimension is 14 μ m * 14 μ m, has advantages such as highly sensitive, low in energy consumption, that volume is little, the life-span is long.
Wherein, The OS of TCD1208AP chip (Signal output) pin connects the INT0 pin of AT89C2051 single-chip microcomputer; The signal of OS output is the picture point data that imageing sensor is gathered, transfer to single-chip microcomputer after, by the picture point data counts of 0 pair of collection of single-chip microcomputer internal counter; The SH of TCD1208AP chip (Shift Gate) pin connects the INT1 pin of single-chip microcomputer, and the signal of SH output is used for the counter 0 of control single chip computer, and SH pulse each is just with counter 0 zero clearing; The P3.7 pin of single-chip microcomputer connects the input of laser control circuit 13, is used to trigger laser control circuit 13 so that generating laser is launched laser, and it is the semiconductor laser of 0.65 μ m that generating laser can be selected wavelength for use; The P3.5 pin of single-chip microcomputer connects host computer 21 through the RS232 Serial Port Line; Be used to realize communicating by letter of single-chip microcomputer and host computer 21; Content of Communication comprises that single-chip microcomputer on the one hand receives the instruction that host computer 21 sends and carries out function corresponding in view of the above, and single-chip microcomputer is transferred to host computer 21 to carry out analyzing and processing with the point on the rib to the range data of monitor on the other hand.Software section can use assembler language realization single-chip microcomputer that connected each parts are controlled, and realizes interruption processing module, Communications Processor Module, command processing module time delay module etc. such as programming.
Like Fig. 2 and Fig. 3, said dynamic rotary unit 3 also comprises the wheel axle angular encoder 33 and shaft-position encoder 34 that is arranged on the pitching part.The output of wheel axle angular encoder 33 is connected with the input of shaft-position encoder 34, and the output of shaft-position encoder 34 connects an input of main control chip 20.In the specific embodiment of Fig. 3, the output of shaft-position encoder 34 is connected with the P1.7 pin of AT89C2051 single-chip microcomputer, is counted by the pulse signal of single-chip microcomputer to shaft-position encoder 34 outputs.Shaft-position encoder 34 every circulation rotations once; Can export several pulse signals; Such as 100 pulse signals, gather picture point data if each pulse signal is corresponding, collect several picture point data after just can scanning whole rib surface through being rotated in of shaft-position encoder 34.
Data processing unit can comprise that also the baud rate that electrically connects with main control chip 20 selects circuit 22, is used for the transfer rate of control data.In the specific embodiment of Fig. 3, the P1.3 pin of single-chip microcomputer selects the input of circuit 22 to be connected with this baud rate, can be as required the baud rate of serial ports be set at 19.2kb/s and 38.4kb/s.
Fig. 4 A and Fig. 4 B are the user mode figure of the utility model, and Fig. 4 C is the convex-concave aspect graph on side-looking rib surface.Like Fig. 2, Fig. 4 A, Fig. 4 B and Fig. 4 C; During use; The fully-mechanized mining working rib dynamic monitor of the utility model is installed on the hydraulic support 100 under the coal mine, and it will be with the whole rib of coal-face 200 height as between a monitoring section, according to a determining deviation; Such as 100mm, be fan and scan whole rib 200 with some picture point data that obtain rib 200 surfaces and then the concavo-convex situation that analyzes rib 200 surfaces.Before the use, the horizontal and vertical shift length that need set dynamic rotary unit according to the rib height and the sweep span of coal-face to be monitored is so that all scan whole rib 200 through the laser ranging unit through the mode of interval scan round.Laser ranging unit 1 is given main control chip 20 with each point on the rib that scans 200 to the picture point transfer of data of monitor; Main control chip 20 with those picture point data transaction be on the rib 200 each point after the horizontal range of monitor; Further each point on the rib 200 is transferred to host computer 21 to monitor horizontal range data and carry out analyzing and processing; Host computer 21 can be drawn out the convex-concave form Figure 30 0 on rib surface through software processes according to these horizontal range data, and the technician just can judge where the coal wall caving phenomenon may occur according to this convex-concave form Figure 30 0.
Because what the utility model adopted is the Photoelectric Detection means; Promptly utilize laser and imageing sensor to cooperatively interact and carry out non-contact detecting; So will inevitably receive the interference of lighting source and light source for miner's lamp under the coal mine etc. in the testing process, and then can have influence on the accuracy of survey data.Therefore, disturb impulsive noise signal and the misdescription number that causes in order to eliminate effectively, several kinds of modes below the utility model passes through are eliminated interference:
1) in the CCD image sensor output signal end dynamic threshold level generative circuit is set.When surround lighting strengthens, can suitably raise the comparative voltage of binaryzation comparison circuit automatically, and suitably reduce comparative voltage when surround lighting weakens Shi Zeke, can prevent the misdescription number that false OS signal causes effectively.
Fig. 5 A, Fig. 5 B are that threshold level and ccd output signal concern sketch map, like Fig. 5 A, under the normal condition, can according to ccd output signal 501 on the threshold level 500 or under to judge the output signal be 0 or be 1.When surround lighting strengthened, like Fig. 5 B, the average voltage of ccd output signal 501 rose, if adopt fixing binaryzation threshold level, the erroneous judgement to ccd output signal then can occur, and (not shown) in like manner when ambient light weakens.
To this defective, the utility model has designed dynamic threshold level generative circuit.Like Fig. 5 C, be connected with the dynamic threshold level generative circuit of forming by RC integrating circuit and voltage comparator 400 in the CCD output, ccd output signal offers voltage comparator 400 after the filtering of RC integrating circuit, amplification, as the binaryzation threshold level.When surround lighting strengthened, the average voltage of ccd output signal rose, and the binaryzation threshold level also increases; And when surround lighting weakened, the average voltage of ccd output signal descended, and the binaryzation threshold level also descends thereupon, and like this, the binaryzation threshold level can the dynamic change with the power of surround lighting, has avoided the erroneous judgement to ccd output signal effectively.
2) realize processing through programming, change to eliminate owing to the OS deration of signal changes the measurement result that causes to the OS deration of signal.Its part assembler language code is:
CLR TR0; Counter 0 stops
CLR?C
MOV A, TL0; What deposit among the TL0 is pulse width
RRC A; Move to right one
CLR?C
ADDC A, R2; What deposit among the R2 is the least-significant byte of original OS deration of signal
MOV?R2，A
MOV?A，R3
ADDC A, #00H; What deposit among the R3 is the most-significant byte of original OS deration of signal
MOV?R3，A
3) at preceding cone, the narrow band pass filter of installing additional of optics receiving unit 15 (like Fig. 2), with the influence of filtering ambient light.
4) main control chip 20 (like Fig. 2) can further realize eliminating the interference effect of surround lighting through programming, such as can doublely sampling for the picture point data of gathering, to eliminate the interference of burr.
Simultaneously, consider that can there be error in the picture point data that collect, be error, can handle data through following formula than small data:
In the formula: σ
iThe standard deviation of-computation interval defect situation, mm;
d
iThe concavo-convex deviate of rib that-interval 100mm gathers, mm;
N-measuring point number.
In addition, when host computer is stored and handled the range data of receiving through software, need to realize receiving data, data; And carry out distance calculation according to actual needs, and interval analysis, figure dynamically shows; Functions such as print processing; Software environment can be used VB6.0, uses DAO DAO (Data Access Object) to create database on this basis, with fully control and the flexible Application of realization program to database.And; Because the interval of monitor image data is little; Picking rate is fast, does not lose in order to guarantee data, in program, can utilize the Dynamic Array of several variable sizes to keep in the data of receiving; Again all data are all deposited in the database file when stopping to gather by the time, like this data loss problem with regard to having avoided causing because of delay that database manipulation causes.
The fully-mechanized mining working rib dynamic monitor of the utility model can obtain the picture point data of each point on the differing heights rib surface automatically through laser ranging unit and dynamic rotary unit;, data processing unit can obtain the horizontal range of each point after handling to this monitor; Can further draw out the convex-concave state diagram on rib surface to the horizontal range data of monitor according to each point; The technician can directly judge what surperficial position of rib with this concavo-convex state diagram the coal wall caving phenomenon may occur, and then can make safeguard measure in advance.The utility model can be used for large-mining-height working surface coal wall caving condition monitoring, inspection of quality and production management; Also can be used to monitor the continuation characteristic of colliery underworkings displacement deformation, can also be used to measure the blast hole depth under the coal mine after removing dynamic rotary unit; Its scope of application is wide; Practical, for coal mining provides safety guarantee, and then improved production efficiency widely.
The above is preferred embodiment of the utility model and the know-why of being used thereof; For a person skilled in the art; Under the situation of spirit that does not deviate from the utility model and scope; Any based on conspicuous changes such as the equivalent transformation on the utility model technical scheme basis, simple replacements, all belong within the utility model protection domain.
Claims (5)
1. a fully-mechanized mining working rib dynamic monitor is characterized in that, it comprises laser ranging unit and the data processing unit that is attached thereto;
This laser ranging unit comprises test section, the Liar that is connected with this test section and the data acquisition mouth of being located at this test section place;
This data processing unit comprises main control chip and the host computer that electrically connects with it;
Said test section comprises laser control circuit, the generating laser that is electrical connected successively, optics receiving unit, imageing sensor and imageing sensor drive circuit, and wherein, the input of this laser control circuit is connected with the output of said main control chip; The output of this imageing sensor drive circuit is connected with the input of said main control chip.
2. fully-mechanized mining working rib dynamic monitor as claimed in claim 1 is characterized in that it also comprises dynamic rotary unit, and this dynamic rotary unit comprises rolling part and pitching part, and this rolling part is connected with said test section through this pitching part.
3. fully-mechanized mining working rib dynamic monitor as claimed in claim 2; It is characterized in that; Said dynamic rotary unit also comprises wheel axle angular encoder, shaft-position encoder, and the output of this wheel axle angular encoder is connected with the input of said main control chip through this shaft-position encoder.
4. like claim 1 or 3 described fully-mechanized mining working rib dynamic monitors, it is characterized in that the output of said imageing sensor also is connected with the dynamic threshold level generative circuit that is made up of RC integrating circuit and voltage comparator.
5. fully-mechanized mining working rib dynamic monitor as claimed in claim 4 is characterized in that, cone and narrow band pass filter are installed before the said optics receiving unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203435789U CN202250235U (en) | 2011-09-14 | 2011-09-14 | Dynamic monitor for coal walls of fully mechanized working surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203435789U CN202250235U (en) | 2011-09-14 | 2011-09-14 | Dynamic monitor for coal walls of fully mechanized working surface |
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| CN202250235U true CN202250235U (en) | 2012-05-30 |
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| CN2011203435789U Expired - Fee Related CN202250235U (en) | 2011-09-14 | 2011-09-14 | Dynamic monitor for coal walls of fully mechanized working surface |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635238A (en) * | 2015-02-03 | 2015-05-20 | 山东大学 | Multifunctional measuring instrument for seismic-wave-method advance geological forecast and application method thereof |
| CN114509036A (en) * | 2021-11-16 | 2022-05-17 | 中煤新集能源股份有限公司 | Hydraulic support monitoring device |
-
2011
- 2011-09-14 CN CN2011203435789U patent/CN202250235U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635238A (en) * | 2015-02-03 | 2015-05-20 | 山东大学 | Multifunctional measuring instrument for seismic-wave-method advance geological forecast and application method thereof |
| CN104635238B (en) * | 2015-02-03 | 2017-02-22 | 山东大学 | Multifunctional measuring instrument for seismic-wave-method advance geological forecast and application method thereof |
| CN114509036A (en) * | 2021-11-16 | 2022-05-17 | 中煤新集能源股份有限公司 | Hydraulic support monitoring device |
| CN114509036B (en) * | 2021-11-16 | 2024-01-16 | 中煤新集能源股份有限公司 | Hydraulic support monitoring device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20140914 |
|
| EXPY | Termination of patent right or utility model |