CN204528511U - Based on the belt detection alarm device of laser ranging - Google Patents
Based on the belt detection alarm device of laser ranging Download PDFInfo
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- CN204528511U CN204528511U CN201520028021.4U CN201520028021U CN204528511U CN 204528511 U CN204528511 U CN 204528511U CN 201520028021 U CN201520028021 U CN 201520028021U CN 204528511 U CN204528511 U CN 204528511U
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Abstract
The utility model discloses a kind of belt detection alarm device based on laser ranging, adopt non-contact measurement principle, that effectively avoids travel switch to measure affecting generation by contact environment fails to report the faults such as wrong report.Described system is by laser scanning and ranging device scan material surface; obtain the distance value of laser head to material surface; the boundary position of belt is obtained again by distance value; by comparing process with the belt edge position of recording during device normalization; judge belt whether sideslip; when discovery belt deviation, make corresponding action by sending pulse control signal notice belt control convenience, protection belt equipment is not damaged.Native system device therefor and original paper are few, and structure is simple, detect reliable high, and system maintenance cost is low, be convenient to use in industry at each travelling belt apply.
Description
Technical field
The utility model relates to a kind of belt detection alarm device based on laser ranging, and this device relates to laser ranging and the field such as to communicate.
Background technology
Travelling belt is the visual plant of material short-distance transport, is widely used in the production industries such as mine, agricultural, food, tobacco.Belt deviation is fault the most common in travelling belt operation process, and its harmfulness is very big, and major effect has the following aspects: belt deviation causes the system failure to shut down affects production operation efficiency; Easily cause the improper damage of equipment major part; The material that belt deviation causes is spilt and is easily formed potential safety hazard.Have very important significance so detect belt deviation in time, exactly.It is use sideslip detector switch, i.e. travel switch that current belt deviation detects main method.During use by travel switch mounted in pairs in conveyor head or afterbody, when belt deviation, belt edge contact compressing travel switch contact produces mobile trigger alarm.Sideslip detector switch is mechanical switch, adopts contact measurement mode, when it is applied to comparatively severe production environment as inferior in coal mine, very easily by impacts such as coal dust, dirt, greasy filth, the fault such as easily to report, fail to report by mistake.Therefore, the fault rate of sideslip detector switch is higher.For ensureing that sideslip detector switch normally works, need full-time staff manually to carry out periodical maintenance to switch, the human cost of use is higher.
Therefore, need at present a kind of adopt non-contact detection principle, reliable, be convenient to implement, the new installation of detection travelling belt sideslip that maintenance cost is low.
Summary of the invention
The utility model object is to provide a kind of belt detection alarm device based on laser ranging, adopts non-contact detection principle, reliable and maintenance cost is low.
1. detection alarm device described in mainly comprises laser scanning and ranging equipment, belt speed measuring unit, man-machine interaction unit, memory cell, data processing unit and communication unit; Laser scanning and ranging equipment is arranged on above travelling belt, for obtaining material cross-section data; Belt speed measuring unit connects belt roller axle, for obtaining belt movement speed; Man-machine interaction unit comprises button, read-out and annunciator, and button is used for carrying out setting operation to detection correlation parameter, and read-out is used for data display, and annunciator is used for sound and light alarm; Communication unit is responsible for gathering and sending data; Memory cell is responsible for storing belt edge location data in normal state, detecting associated parameter data; Data processing unit processes the signal of the scan-data of laser scanning and ranging equipment and belt speed measuring unit or data, obtains the logical data of belt speed and belt whether sideslip.
2. this device comprises further: laser scanning and ranging equipment is arranged on directly over the diad of every bar travelling belt, and setting height(from bottom) should higher than height of materials; The scanning plane of laser scanning and ranging equipment perpendicular to tangent plane bottom belt diad and belt, and should need ensure that scanning finding range is greater than belt width simultaneously.
3. this device comprises further: belt speed measuring unit directly or indirectly connects belt roller axle, measures the rotating speed of cylinder, sends corresponding impulse singla according to rotating speed.
4. this device comprises further: communication unit comprises input and output port, is received the scan-data of laser scanning and ranging unit by data-in port, is received the pulse data of belt speed measuring unit by Puled input port; Data processing unit result is sent to other managing apparatus by communication port, connects belt control convenience by pulse output end mouth, control belt when belt deviation is reported to the police by belt control convenience out of service
5. this device comprises further: the data processing unit of detection alarm device comprises multiplier and comparator, the impulse singla that multiplier sends for the treatment of belt speed measuring unit; Process obtains belt speed; The scan-data of comparator processing elements laser scanning and ranging unit is adopted to obtain belt edge position; Comparator also processes real-time belt edge position and calibration position data, and process obtains the logical data of belt whether sideslip.
Accompanying drawing explanation
Fig. 1 is based on the belt detection alarm device schematic diagram of laser ranging.
Fig. 2 equipment scheme of installation.
Fig. 3 detection alarm implementation process schematic diagram.
The cross-section data schematic diagram that Fig. 4 timing signal laser scanning and ranging gathers.
The instantaneous cross-section data schematic diagram that during Fig. 5 belt deviation, laser scanning and ranging gathers.
Detailed description of the invention
Described detection alarm device, as shown in Figure 1 in embodiment, comprising:
1. laser scanning and ranging unit (101), adopts the laser scanning and ranging instrument (102) that range finding distance is greater than 5 meters.
2. belt speed measuring unit (103), adopts photoelectric sensor (104), is directly or indirectly connected with belt roller axle, measures the rotating speed of cylinder in real time.
3. communication unit (105), comprise input port (106) and input port (107), the scan-data that data-in port reception laser scanning and ranging instrument (102) sends can select the standard port such as RS232, RS485, USB., Puled input port receives the pulse letter of photoelectric sensor (104).Data-out port sends the data to miscellaneous equipment, can adopt the network port or fieldbus port, except cable port, also can use communication; Pulse output end mouth connects belt control convenience (as PLC), sends impulse singla control belt and shuts down, protection relevant device when belt deviation.
4. man-machine interaction unit (108), comprises read-out (109) and button (111), and read-out adopts two row dot matrix type LCD LCD MODULEs, ken size: 60.5 × 18.0mm, 54.8 × 18.3m.Design use 4 buttons, adopt Independent keys formula keyboard, in conjunction with the display interface of read-out, realize the function of detection correlation parameter being carried out to setting operation.Annunciator (112) has loudspeaker and alarm lamp, realizes sound and light of alarm.
5. memory cell (113), employing 1 24C512 storage chip (114), 24C512 uses I2C bus communication, use two standard I/O interfaces to add pull-up resistor and connect SCL and SDA pin, realize treater and storage chip communication control.Parameter relevant with detection in storage chip primary storage, and the position data of timing signal belt.
6. data processing unit (115), comparator (116), compares work for the treatment of for performing data, and multiplier in the data processing work performing multiplication with (117), can use MCU during enforcement, FPGA also can be used to realize.
7. auxiliary circuit (118), except above-mentioned each unit, device also comprises the auxiliary circuits such as power circuit and related elements, for each unit element provides support, as under underground coal mine use, all elements and circuit should meet intrinsic safety requirements.
The installation site of laser scanning and ranging unit and belt speed measuring unit is with reference to figure 2:
1. laser scanning and ranging instrument (102) is arranged on directly over the diad of every bar travelling belt, and setting height(from bottom) should higher than height of materials; The scanning plane of laser scanning and ranging equipment perpendicular to tangent plane (202) bottom belt diad (201) and belt, and should need ensure that scanning finding range is greater than belt width simultaneously; .
2. photoelectric sensor (104) directly or indirectly connects the axle of cylinder (203).
3. other unit components except laser scanning and ranging unit and belt speed measuring unit concentrate in device case (204), and device case can be arranged on the support of belt speed measuring unit place cylinder.
The concrete implementation step of detection alarm is as shown in Figure 3:
1. location position (301), timing signal need use laser scanning and ranging equipment to scan to normotopic belt, obtains the boundary position A of belt
land A
r, as shown in Figure 4, record in the memory unit.Process is as follows:
A) communication unit receives the cross section shaped upper part data that laser scanning and ranging device scan obtains material on belt, data are one group of laser head range-to-go value, the scanning angle of most laser scanning and ranging instrument is larger, generally all reach more than 180 degree, maximumly reach 360 degree, for preventing interference, data composition array X (n) only intercepted in belt detection angles region process;
B) poor X (the i)-X (i-1) of adjacent two numbers asked backward one by one by data processing unit comparator from X (0), X (i)-X (i-1) the > G when finding that certain difference is greater than threshold value G, then terminate relatively and record the position i of currency in array, left margin position A
l=i;
C) in like manner from X (n-1), repeat forward above process, obtain right margin position A
r, gained position is stored in memory cell.
2. (302) communication unit receives the pulse data that photoelectric sensor is uploaded, and data processing unit uses multiplier process to obtain v
i, v
i=spL π, in formula, s is interpulse period, and p is the pulse sum that namely sensor resolution circles, and L is diameter of cylinder.
3. (303) communication unit receives the cross section shaped upper part real time data that the scanning of laser scanning and ranging instrument obtains material on belt, and data processing unit obtains the boundary position B of real-time belt by above-mentioned comparator treating process
land B
r, as shown in Figure 5.
4. (304) data processing unit comparator is by the boundary position B of more real-time belt
l, B
rwith the boundary position A of the belt recorded
l, A
r, as | B
r-A
r| > F, and | B
l-A
l| > F, simultaneously B
r-A
rwith B
l-A
lsign is identical; Then trigger belt deviation and report to the police (305) as met above condition, annunciator sound and light alarm, and in read-out display relevant information, to be transmitted control signal to belt control convenience by communication unit.
Claims (5)
1. based on a belt detection alarm device for laser ranging, it is characterized in that: device mainly comprises laser scanning and ranging equipment, belt speed measuring unit, man-machine interaction unit, memory cell, data processing unit and communication unit; Laser scanning and ranging equipment is arranged on above travelling belt, for obtaining material cross-section data; Belt speed measuring unit connects belt roller axle, for obtaining belt movement speed; Man-machine interaction unit comprises button, read-out and annunciator, and button is used for carrying out setting operation to detection correlation parameter, and read-out is used for data display, and annunciator is used for sound and light alarm; Communication unit is responsible for gathering and sending data; Memory cell is responsible for storing belt edge location data in normal state, detecting associated parameter data; Data processing unit processes the signal of the scan-data of laser scanning and ranging equipment and belt speed measuring unit or data, obtains the logical data of belt speed and belt whether sideslip.
2. detection alarm device as claimed in claim 1, is characterized in that: laser scanning and ranging equipment is arranged on directly over the diad of every bar travelling belt, and setting height(from bottom) should higher than height of materials; The scanning plane of laser scanning and ranging equipment perpendicular to tangent plane bottom belt diad and belt, and should need ensure that scanning finding range is greater than belt width simultaneously.
3. detection alarm device as claimed in claim 1, is characterized in that: belt speed measuring unit directly or indirectly connects belt roller axle, measures the rotating speed of cylinder, sends corresponding impulse singla according to rotating speed.
4. detection alarm device as claimed in claim 1, it is characterized in that: communication unit comprises input and output port, received the scan-data of laser scanning and ranging equipment by data-in port, received the pulse data of belt speed measuring unit by Puled input port; Data processing unit result is sent to other managing apparatus by communication port, connects belt control convenience by pulse output end mouth, control belt when belt deviation is reported to the police by belt control convenience out of service.
5. detection alarm device as claimed in claim 1, is characterized in that: the data processing unit of detection alarm device comprises multiplier and comparator, the impulse singla that multiplier sends for the treatment of belt speed measuring unit; Process obtains belt speed; Adopt the scan-data of comparator process laser scanning and ranging equipment, process obtains belt edge position; Comparator also processes real-time belt edge position and calibration position data, and process obtains the logical data of belt whether sideslip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520028021.4U CN204528511U (en) | 2015-01-13 | 2015-01-13 | Based on the belt detection alarm device of laser ranging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520028021.4U CN204528511U (en) | 2015-01-13 | 2015-01-13 | Based on the belt detection alarm device of laser ranging |
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| Publication Number | Publication Date |
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| CN204528511U true CN204528511U (en) | 2015-08-05 |
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| CN201520028021.4U Active CN204528511U (en) | 2015-01-13 | 2015-01-13 | Based on the belt detection alarm device of laser ranging |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105460496A (en) * | 2015-12-30 | 2016-04-06 | 青岛港国际股份有限公司 | Belt anti-deflection device of bucket wheel stacker-reclaimer |
| CN106429301A (en) * | 2016-11-07 | 2017-02-22 | 中国矿业大学(北京) | Belt monitoring early warning device based on ultrasonic waves |
-
2015
- 2015-01-13 CN CN201520028021.4U patent/CN204528511U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105460496A (en) * | 2015-12-30 | 2016-04-06 | 青岛港国际股份有限公司 | Belt anti-deflection device of bucket wheel stacker-reclaimer |
| CN106429301A (en) * | 2016-11-07 | 2017-02-22 | 中国矿业大学(北京) | Belt monitoring early warning device based on ultrasonic waves |
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