CN112896990A - Mining explosion-proof coal quantity detection system and method - Google Patents
Mining explosion-proof coal quantity detection system and method Download PDFInfo
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- CN112896990A CN112896990A CN202110283258.7A CN202110283258A CN112896990A CN 112896990 A CN112896990 A CN 112896990A CN 202110283258 A CN202110283258 A CN 202110283258A CN 112896990 A CN112896990 A CN 112896990A
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- detector
- conveying belt
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- coal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/04—Detection means
- B65G2203/042—Sensors
- B65G2203/044—Optical
Abstract
The invention discloses a mining explosion-proof coal quantity detection system and a method, wherein the system consists of an installation base, a detector, a detection window, a conveying belt, a controller, a display window and a speed sensor; the detector adopts an explosion-proof shell, a detection window is arranged below the detector, and a detection light curtain is ejected from the detection window to scan the coal flow cross section on the conveying belt. The detector is arranged on the mounting base, a detection window of the detector is over against the center of the conveying belt, the detector is connected with the controller, and a display window is arranged on the controller and used for displaying the running state of the system and the setting of system parameters. The invention has the characteristics of non-contact measurement, high precision, simple maintenance and strong management function.
Description
Technical Field
The invention belongs to the field of coal mine detection, and particularly relates to a system and a method for detecting the quantity of a mining explosion-proof coal.
Background
At present, there are various methods for detecting the coal amount of a coal mine belt conveyor, such as: the ultrasonic measurement method is simple, but the precision is low; the video method is a detection method combining a camera and laser, belongs to an indirect measurement method, and has a complex structure and low precision. The belt weigher measuring method is a traditional measuring method and has the defects of low precision and large maintenance amount. In addition, the method has single function and does not have the functions of managing a plurality of conveyer belts and intelligently coordinating.
Disclosure of Invention
In order to overcome the technical defects, the invention provides a mining explosion-proof coal quantity detection system and a mining explosion-proof coal quantity detection method.
The technical scheme adopted by the invention is as follows: a mining flame-proof type coal quantity detection system is composed of an installation base, a detector, a detection window, a conveying belt, a controller, a display window and a speed sensor; the device comprises a belt conveyor, a support, a mounting base, a detector, a detection light curtain and a scanning light curtain, wherein the support is mounted at the top of a roadway above the belt conveyor, the mounting base is mounted on the support, the detector adopts an explosion-proof shell, a detection window is formed below the detector, and the detection light curtain is ejected out of the detection window to scan the coal flow sectional area on the conveying belt. The detector is arranged on the mounting base, the mounting position is at the center of the conveying belt, the detection window of the detector is right opposite to the center of the conveying belt, the scanning direction of the detection light curtain is ensured to be vertical to the running direction of the conveying belt, the detector is connected with the controller, and the controller is provided with the display window for displaying the running state of the system and the setting of system parameters. The speed sensor is arranged below the conveying belt and is connected with the controller.
Based on the mining explosion-proof coal quantity detection system, a coal quantity detection method is provided, and the detection principle is as follows:
the formula for calculating the coal flow of the conveying belt adopts: a. thet=（Sa-St)*VtWherein A istRepresents the coal flow rate, S, of the conveyor belt (5) at time taThe sector area of the included angle between the detection light curtain (4) and the edge of the conveyer belt (5) when the conveyer belt (5) is unloaded is shown, StWhen coal flow exists, the sector area V between the included angles of the light curtain (4) and the edge of the conveying belt (5) is detected at the moment ttRepresents the running speed of the conveyor belt (5) at time t.
The cumulative amount of coal flow B from time 0 to time n is represented by the following equation:
B=A0+A1+A2+....+ At +…+An
B=（Sa-S0)*V0+（Sa-S1)*V1+（Sa-S2)*V2+...（Sa-St)*Vt+…（Sa-Sn)*Vn
the coal flow rate from time 0 to time n can be calculated by this equation.
The invention has the advantages of non-contact measurement, high precision, simple maintenance and strong management function, can realize the coordinated control of the operation of a plurality of belt conveyors, has networking and informatization capabilities, and can be butted with a third-party system to participate in production management.
Drawings
FIG. 1 is a schematic diagram of a composition structure of a mining explosion-proof coal quantity detection system;
FIG. 2 is a schematic diagram of the principle of coal quantity detection.
In the figure: 1. installing a base; 2. a detector; 3. a detection window; 4. detecting a light curtain; 5. a conveyor belt; 6. coal; 7. a controller; 8. a display window; 9. a speed sensor.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings and examples.
As shown in figure 1, the mining explosion-proof type coal quantity detection system comprises an installation base (1), a detector (2),
The device comprises a detection window (3), a conveying belt (5), a controller (7), a display window (8) and a speed sensor (9); the device comprises a belt conveyor, a support, a mounting base (1), a detector (2), a detection window (3), a detection light curtain (4) and a scanning device, wherein the support is mounted at the top of a roadway above the belt conveyor, the mounting base (1) is mounted on the support, the detector (2) adopts an explosion-proof shell, and the detection window (3) is formed below the detector and is used for scanning the cross section of a coal flow on a conveying belt (5) and is ejected out of the detection; the detector (2) is installed on the installation base (1), the installation position is in the center of the conveying belt (5), the detection window (3) of the detector (2) is over against the center of the conveying belt (5) to ensure that the scanning direction of the detection light curtain (4) is perpendicular to the running direction of the conveying belt (5), the detector (2) is connected with the controller (7), and the controller (7) is provided with the display window (8) for displaying the running state of the system and setting system parameters. The speed sensor (9) is arranged below the conveying belt (5) and is connected with the controller (7). The controller (7) selects an STM32 high-performance processor with strong data processing capability, and can calculate the coal flow of the conveying belt (5).
As shown in fig. 2, based on the above-mentioned mining explosion-proof coal quantity detection system, a coal quantity detection method is proposed, and the detection principle is as follows:
the formula for calculating the coal flow of the conveying belt is as follows: a. thet=（Sa-St)*Vt
Wherein A istRepresents the coal flow rate, S, of the conveyor belt (5) at time taThe sector area of the included angle between the detection light curtain (4) and the edge of the conveyer belt (5) when the conveyer belt (5) is unloaded is shown, StWhen coal flow exists, the sector area V between the included angles of the light curtain (4) and the edge of the conveying belt (5) is detected at the moment ttRepresents the running speed of the conveyor belt (5) at time t.
The cumulative amount of coal flow B from time 0 to time n is represented by the following equation:
B=A0+A1+A2+....+ At +…+An
B=（Sa-S0)*V0+（Sa-S1)*V1+（Sa-S2)*V2+...（Sa-St)*Vt+…（Sa-Sn)*Vn
the key for measuring the coal quantity lies in calibrating the sector area S of the included angle between the detection light curtain (4) and the edge of the conveying belt (5) in the no-load statea。
A calibration mode: when the conveyer belt (5) is unloaded, the sector area of the included angle between the detecting light curtain (4) and the edge of the conveyer belt (5) is measured and the calibration value S is recordeda。
Measurement mode: when the conveyer belt (5) normally runs, the sector area S of the included angle between the detection light curtain (4) and the edge of the conveyer belt (5) is measuredt。
The time interval of the measuring time t can be adjusted according to the change condition of the coal flow and the running speed of the conveying belt (5), and the shorter the interval, the higher the measuring precision.
The coal flow of the conveying belt (5) can be calculated through the processes. The method has the characteristics of simplicity and high precision.
Claims (2)
1. A mining flame-proof type coal quantity detection system is characterized in that: the system consists of an installation base (1), a detector (2), a detection window (3), a conveying belt (5), a controller (7), a display window (8) and a speed sensor (9); the device comprises a belt conveyor, a support, a mounting base (1), a detector (2), a detection window (3), a detection light curtain (4) and a scanning device, wherein the support is mounted at the top of a roadway above the belt conveyor, the mounting base (1) is mounted on the support, the detector (2) adopts an explosion-proof shell, and the detection window (3) is formed below the detector and is used for scanning the cross section of a coal flow on a conveying belt (5) and is ejected out of the detection; the detector (2) is arranged on the mounting base (1) and is arranged at the center of the conveying belt (5), a detection window (3) of the detector (2) is over against the center of the conveying belt (5) to ensure that the scanning direction of the detection light curtain (4) is vertical to the running direction of the conveying belt (5), the detector (2) is connected with a controller (7), and a display window (8) is arranged on the controller (7) and is used for displaying the running state of a system and setting system parameters; the speed sensor (9) is arranged below the conveying belt (5) and is connected with the controller (7); the controller (7) selects STM32 high-performance processor.
2. The mining explosion-proof type coal quantity detection system based on claim 1 provides a coal quantity detection method, which is characterized in that: the coal quantity detection method of the mining explosion-proof coal quantity detection system adopts the following principle:
the formula for calculating the coal flow of the conveying belt is as follows: a. thet=（Sa-St)*Vt
Wherein A istRepresents the coal flow rate, S, of the conveyor belt (5) at time taThe sector area of the included angle between the detection light curtain (4) and the edge of the conveyer belt (5) when the conveyer belt (5) is unloaded is shown, StWhen coal flow exists, the sector area V between the included angles of the light curtain (4) and the edge of the conveying belt (5) is detected at the moment ttWhen it is indicatedThe running speed of the conveyer belt (5) is measured;
the cumulative amount of coal flow B from time 0 to time n is represented by the following equation:
B=A0+A1+A2+....+ At +…+An
B=（Sa-S0)*V0+（Sa-S1)*V1+（Sa-S2)*V2+...（Sa-St)*Vt+…（Sa-Sn)*Vn
the coal flow rate from time 0 to time n can be calculated by this equation.
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| CN202110283258.7A CN112896990A (en) | 2021-03-17 | 2021-03-17 | Mining explosion-proof coal quantity detection system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230091198A1 (en) * | 2020-02-28 | 2023-03-23 | Barge's Belting Solution Pty Ltd | Conveyor belt rip detection method & system |
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| JP2013112483A (en) * | 2011-11-30 | 2013-06-10 | Ube Machinery Corporation Ltd | Control method of belt conveyor device and belt conveyor facility |
| US20140110590A1 (en) * | 2012-10-22 | 2014-04-24 | Troxler Electronic Laboratories, Inc. | Conveyor system and measuring device for determining water content of a construction material |
| CN107101683A (en) * | 2017-06-15 | 2017-08-29 | 西安科技大学 | A kind of coal flow monitoring system based on laser radar and velocity information |
| CN109781196A (en) * | 2019-02-14 | 2019-05-21 | 苏州万闻信息工程有限公司 | A kind of contactless method for measuring mass flow on belt conveyor |
| CN110648345A (en) * | 2019-09-24 | 2020-01-03 | 中国烟草总公司郑州烟草研究院 | Method and system for detecting flow of tobacco shred materials on conveying belt based on light field imaging |
| CN111268393A (en) * | 2020-03-25 | 2020-06-12 | 安徽恒泰电气科技股份有限公司 | Belt speed regulation control system for coal flow detection |
| CN111536910A (en) * | 2020-04-28 | 2020-08-14 | 吉林工程技术师范学院 | Grain conveyor material cross-sectional area detection and calculation method based on ultrasonic waves |
| CN111747062A (en) * | 2019-09-03 | 2020-10-09 | 南京北路自动化系统有限责任公司 | Coal flow detection method based on surface laser radar |
-
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- 2021-03-17 CN CN202110283258.7A patent/CN112896990A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013112483A (en) * | 2011-11-30 | 2013-06-10 | Ube Machinery Corporation Ltd | Control method of belt conveyor device and belt conveyor facility |
| US20140110590A1 (en) * | 2012-10-22 | 2014-04-24 | Troxler Electronic Laboratories, Inc. | Conveyor system and measuring device for determining water content of a construction material |
| CN107101683A (en) * | 2017-06-15 | 2017-08-29 | 西安科技大学 | A kind of coal flow monitoring system based on laser radar and velocity information |
| CN109781196A (en) * | 2019-02-14 | 2019-05-21 | 苏州万闻信息工程有限公司 | A kind of contactless method for measuring mass flow on belt conveyor |
| CN111747062A (en) * | 2019-09-03 | 2020-10-09 | 南京北路自动化系统有限责任公司 | Coal flow detection method based on surface laser radar |
| CN110648345A (en) * | 2019-09-24 | 2020-01-03 | 中国烟草总公司郑州烟草研究院 | Method and system for detecting flow of tobacco shred materials on conveying belt based on light field imaging |
| CN111268393A (en) * | 2020-03-25 | 2020-06-12 | 安徽恒泰电气科技股份有限公司 | Belt speed regulation control system for coal flow detection |
| CN111536910A (en) * | 2020-04-28 | 2020-08-14 | 吉林工程技术师范学院 | Grain conveyor material cross-sectional area detection and calculation method based on ultrasonic waves |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230091198A1 (en) * | 2020-02-28 | 2023-03-23 | Barge's Belting Solution Pty Ltd | Conveyor belt rip detection method & system |
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Application publication date: 20210604 |