CN109649996B - Mining working face and belt transportation monitoring system - Google Patents
Mining working face and belt transportation monitoring system Download PDFInfo
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- CN109649996B CN109649996B CN201811643847.6A CN201811643847A CN109649996B CN 109649996 B CN109649996 B CN 109649996B CN 201811643847 A CN201811643847 A CN 201811643847A CN 109649996 B CN109649996 B CN 109649996B
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- 238000005065 mining Methods 0.000 title claims abstract description 116
- 238000012544 monitoring process Methods 0.000 title claims abstract description 34
- 238000004891 communication Methods 0.000 claims abstract description 33
- 238000007600 charging Methods 0.000 claims description 61
- 239000003245 coal Substances 0.000 claims description 44
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 6
- 239000013307 optical fiber Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 108091008695 photoreceptors Proteins 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 2
- 230000003321 amplification Effects 0.000 claims description 2
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 238000010277 constant-current charging Methods 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
Classifications
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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
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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
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
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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
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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
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
- B65G2201/045—Sand, soil and mineral ore
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- Excavating Of Shafts Or Tunnels (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a mining working face and belt transportation monitoring system, which comprises a ground industrial personal computer, an underground centralized control center, a mining working face communication control device, a mining belt conveyor protection device and a switch, wherein the underground centralized control center is connected with the ground industrial personal computer, and the mining working face communication control device and the mining belt conveyor protection device are respectively connected with the underground centralized control center through the switch. The mining working face and the belt conveying monitoring system can comprehensively monitor the belt conveying system, unmanned operation is achieved, timing inspection is achieved, and dynamic speed regulation and energy saving of the belt can be achieved. A large number of underground workers can be saved, and a large amount of electric power is saved.
Description
Technical field:
the invention relates to the technical field of coal mine safety, in particular to a mining working face and a belt transportation monitoring system.
The background technology is as follows:
the scraper conveyor, the reversed loader, the crusher, the hydraulic pump station and the belt conveyor of the fully mechanized coal mining face are main production and conveying equipment of the coal mine. At present, the belt conveyor and the working face equipment mainly adopt manual on-site operation, an electric control device is used for protection, the equipment is isolated and operated, the reliability is low, the fault detection is difficult, and the automatic control of a system is not formed.
With the increasing maturity of frequency conversion technology, more and more belts begin to adopt the converter to drag. Because the coal quantity on the belt cannot be accurately detected, the current frequency conversion belt generally runs at full speed, and the energy-saving function of the frequency converter is not fully exerted.
The mining working face and belt transportation monitoring system can realize global automatic control, automatic speed regulation, video monitoring and voice intercom of coal exploitation and transportation, and the system belongs to a coal mine related safety and production system, is a key system for reducing people and enhancing efficiency of the coal mine, and has wide market prospect.
The invention comprises the following steps:
aiming at the defects of the prior art, the invention provides a mining working face and belt transportation monitoring system, which realizes global monitoring of coal production and transportation, realizes unattended operation, inspection by people and operation and control by a ground computer.
The invention is realized by the following technical scheme: the mining working face and belt transportation monitoring system comprises a ground industrial personal computer, an underground centralized control center, a mining working face communication control device, a mining belt conveyor protection device and a switch, wherein the underground centralized control center is connected with the ground industrial personal computer, and the mining working face communication control device and the mining belt conveyor protection device are respectively connected with the underground centralized control center through the switch.
Specifically, the mining working face communication control device comprises a mining intrinsic safety type programmable controller, a mining intrinsic safety type public address telephone connected with the mining intrinsic safety type programmable controller, a mining intrinsic safety An Jiting lock, a mining intrinsic safety type wireless remote controller, a mining intrinsic safety type material flow sensor, an explosion-proof camera, a related explosion-proof power supply, an explosion-proof display, an explosion-proof computer and the like.
In the invention, the mining belt conveyor protection device comprises a crossheading belt protection device, a main roadway belt protection device and a main well belt protection device.
Specifically, the mining belt conveyor protection device comprises a mining intrinsic safety type programmable controller, a mining intrinsic safety type public address telephone connected with the mining intrinsic safety type programmable controller, a mining intrinsic safety type An Jiting lock, a mining intrinsic safety type wireless remote controller, a mining intrinsic safety type speed sensor, a mining intrinsic safety type material flow sensor, a mining intrinsic safety type smoke sensor, a mining intrinsic safety type coal pile sensor, a mining explosion-proof electromagnetic valve, a mining intrinsic safety type longitudinal tearing sensor, an explosion-proof camera, a related explosion-proof power supply, an explosion-proof display, an explosion-proof computer and the like.
The invention designs a special mining intrinsic safety type public address telephone, which comprises an external power input module, a current-limiting charging circuit module, a voltage stabilizing module, a charging switching module, a battery module and a singlechip module, wherein the external power input module is electrically connected with the current-limiting charging circuit module, the current-limiting charging circuit module is electrically connected with the battery module through the voltage stabilizing module, the singlechip module is electrically connected with the battery module, and the singlechip module is electrically connected with the current-limiting charging circuit module through the charging switching module.
The invention designs a special mining intrinsic safety type wireless remote controller which comprises a keyboard multiplexing starting-up module, a keyboard multiplexing shutdown module, a battery module, a power supply on-off circuit module, a voltage stabilizing module and a singlechip module, wherein the keyboard multiplexing starting-up module, the battery module and the singlechip module are respectively and electrically connected with the power supply on-off circuit module, the power supply on-off circuit module is electrically connected with the singlechip module through the voltage stabilizing module, and the keyboard multiplexing shutdown module is electrically connected with the singlechip module.
In a preferred embodiment of the invention, the mining working face and belt transportation monitoring system further comprises a belt and working face automatic speed regulation system, wherein the belt and working face automatic speed regulation system is respectively connected with the mining working face communication control device and the mining belt conveyor protection device, and the belt and working face automatic speed regulation system comprises a speed regulation controller, a plurality of main control computers connected with the speed regulation controller and a coal flow monitoring device connected with the main control computers.
Preferably, the coal flow monitoring device comprises a material flow processor, a laser imaging sensor connected with the material flow processor and a mining intrinsic safety type speed/displacement sensor.
Because the coal mine field environment is severe and the electromagnetic environment is complex, in order to ensure the reliability of a communication system, the invention adopts redundant heterogeneous bus communication, which comprises CAN bus and LIN bus communication signals.
The mining working face and belt transportation monitoring system has the beneficial effects that:
1. the system realizes global monitoring of coal production and transportation, realizes unattended operation, patrols by people, and operates and controls on a ground computer;
2. the material distribution condition on the working surface and each belt can be automatically detected, the start-stop and the running speed of the belt are automatically controlled to realize the start along the coal flow, the stop along the coal flow and the speed of the belt and the conveyor are automatically regulated according to the coal quantity, a large amount of electric power is saved, and the abrasion of the belt conveyor is reduced;
3. the wireless remote control receiving module is configured on the equipment along the belt, and the wireless remote controller can control the start and stop of the equipment along the belt and check the running state and data of the belt conveyor;
4. the system adopts a redundant heterogeneous field bus technology, so that the reliability and the instantaneity of communication are ensured;
5. the system adopts a self-diagnosis technology, so that the running state of the equipment along the line can be checked and the power supply along the line can be managed;
6. the system has a remote voice intercom function.
Description of the drawings:
FIG. 1 is a schematic diagram of a mining face and belt transport monitoring system of the present invention;
FIG. 2 is a layout of a mining face and belt transport monitoring system of the present invention;
FIG. 3 is a schematic structural view of the mining belt conveyor protection device of the present invention;
FIG. 4 is a layout of the mining belt conveyor protection device of the present invention;
FIG. 5 is a schematic diagram of the mining face communication control device of the present invention;
fig. 6 is a schematic structural diagram of the mining intrinsic safety type public address telephone of the present invention;
FIG. 7 is a schematic circuit diagram of the mining intrinsic safety type speakerphone of the present invention;
FIG. 8 is a schematic circuit diagram of a battery monitoring module of the mining intrinsic safety type speakerphone of the present invention;
fig. 9 is a schematic structural diagram of a power supply control circuit of the mine intrinsic safety type wireless remote controller;
fig. 10 is a schematic circuit diagram of a power supply control circuit of the mining intrinsic safety type wireless remote controller of the present invention;
FIG. 11 is a schematic circuit diagram of a battery monitoring module of a power control circuit of the mining intrinsic safety type wireless remote controller of the present invention;
FIG. 12 is a layout of the belt and face automatic speed control system of the present invention;
FIG. 13 is a schematic diagram of a laser imaging sensor of the present invention;
FIG. 14 is a flow chart of the belt automatic speed regulation of the present invention;
fig. 15 is a schematic diagram of a communication scheme according to the present invention.
The specific embodiment is as follows:
the preferred embodiments of the present invention will be described in detail below with reference to the attached drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
As shown in FIG. 1, the mining working face and belt transportation monitoring system comprises a ground industrial personal computer, an underground centralized control center, a mining working face communication control device, a mining belt conveyor protection device and a switch, wherein the underground centralized control center is connected with the ground industrial personal computer, the mining working face communication control device and the mining belt conveyor protection device are respectively connected with the underground centralized control center through the switch, and the mining belt conveyor protection device comprises a gate belt protection device, a main roadway belt protection device and a main well belt protection device, and further comprises a transmission optical cable, an explosion-proof camera, an explosion-proof computer, an explosion-proof display and the like. The system layout is shown in fig. 2, the mining working face communication control device and the switch are connected by optical fibers, the Ethernet transmission is adopted, the explosion-proof cameras are transmitted by optical fiber cascade connection, and the explosion-proof cameras can be connected into the underground explosion-proof switch or a host according to the field condition. The underground explosion-proof computer can be arranged, and can control, monitor and communicate with the underground working surface and the belt in a video mode and communicate with each other in a voice mode. The industrial personal computer and the video server are installed in the ground dispatching room, the belt and the working face can be controlled in the dispatching room, any camera can be checked, and the underground telephone is subjected to voice communication.
As shown in fig. 3, the mine belt conveyor protection device comprises a mine intrinsic safety type programmable controller, a mine intrinsic safety type public address telephone connected with the mine intrinsic safety type programmable controller, a mine intrinsic safety type An Jiting lock, a mine intrinsic safety type wireless remote controller, a mine intrinsic safety type speed sensor, a mine intrinsic safety type material flow sensor, a mine intrinsic safety type smoke sensor, a mine intrinsic safety type coal pile sensor, a mine explosion-proof electromagnetic valve, a mine intrinsic safety type longitudinal tearing sensor, an explosion-proof camera, a related explosion-proof power supply, an explosion-proof display, an explosion-proof computer and the like. The layout is shown in fig. 4, the mining intrinsic safety type programmable controller is arranged in the flameproof and intrinsic safety type power box, and the mining intrinsic safety type public address telephone is connected with a lock switch and a deviation switch on the belt conveyor. Each mine intrinsic safety type sensor is arranged around the belt conveyor and used for sensing each operation condition of the belt conveyor.
Similarly, as shown in fig. 5, the mining working face communication control device comprises a mining intrinsic safety type programmable controller, a mining intrinsic safety type public address telephone connected with the mining intrinsic safety type programmable controller, a mining intrinsic safety An Jiting lock, a mining intrinsic safety type wireless remote controller, a mining intrinsic safety type material flow sensor, an explosion-proof camera, a related explosion-proof power supply, an explosion-proof display, an explosion-proof computer and the like.
The mining intrinsic safety type public address telephone is shown in fig. 6, and comprises an external power input module, a current-limiting charging circuit module, a voltage stabilizing module, a charging switching module, a battery module and a singlechip module, wherein the external power input module is electrically connected with the current-limiting charging circuit module, the current-limiting charging circuit module is electrically connected with the battery module through the voltage stabilizing module 3, the singlechip module is electrically connected with the battery module, and the singlechip module is electrically connected with the current-limiting charging circuit module through the charging switching module.
The master control of the public address telephone adopts the singlechip to control, carries out program control on corresponding charging current through communication, can adjust 8-gear charging current through combination, and cooperates with the battery electric quantity to carry out dynamic program control adjustment.
As shown in fig. 7, the external charging power v+ is supplied by the intrinsic safety DC18V, a constant current charging circuit is configured by a rectifier U1, a dial switch S1, and resistors R1, R2, R3, and R6, and then the charging voltage is regulated to a required charging voltage by the rectifier U2, and the charging voltage is set to a voltage when the battery is fully charged. When the battery is not charged (the voltage is lower), the battery is charged by the controlled maximum charging current, the charging current is gradually reduced along with the rising of the battery voltage, when the battery is charged fully, the battery voltage is close to the charging voltage, the charging is automatically stopped, and the charging is restarted after the voltage is reduced, so that the battery is reciprocated.
The program-controlled charging is that the singlechip controls three control ports CON_5MA, CON_10MA and CON_20MA, the corresponding control ports are in one-to-one correspondence with the control ports of the dial switch S1, the dial switch S1 is in fixed setting and is used for setting the minimum charging current, the program-controlled charging current is in a multiplexing state and has high priority, the charging current is set to be adjusted in eight gears of 5mA,10mA,15mA,20mA,25mA,30mA,35mA and 40mA, the singlechip receives a control signal through remote communication, controls the corresponding control ports to control the charging current, and the charging current can be dynamically adjusted by monitoring the battery voltage. And the charging control circuit adopts an electronic switch to switch on and off a corresponding current limiting resistor to realize the adjustment of the maximum current limiting value.
In the battery monitoring module shown in fig. 8, VCC is the positive electrode of the battery, the singlechip controls whether to monitor the voltage of the battery by controlling the con_ad_jc port, monitors once in 30 seconds, reduces the power consumption of the detection circuit by the control circuit, and the ad_jc is connected to the AD conversion port of the singlechip, so that the singlechip can automatically adjust the charging current by monitoring the voltage of the battery.
The wireless module is arranged on the coal mining working face and the belt along the line of the public address telephone, the wireless remote controller is arranged on the transportation monitoring system, the wireless remote controller can control the start and stop and the emergency stop of the belt conveyor at any position along the belt, meanwhile, the state of the belt conveyor is displayed, the wireless module adopts the FYS50 wireless module, the wireless frequency is 433MHz, the wireless transmitting power is 20dBM, and the wireless transmitting distance is 50m. The power control circuit of the mining intrinsic safety type wireless remote controller is shown in fig. 9 and comprises a keyboard multiplexing startup module, a keyboard multiplexing shutdown module, a battery module, a power on-off circuit module, a voltage stabilizing module, a battery monitoring module and a single-chip microcomputer module, wherein the keyboard multiplexing startup module, the battery module and the single-chip microcomputer module are respectively and electrically connected with the power on-off circuit module, the power on-off circuit module is electrically connected with the single-chip microcomputer module through the voltage stabilizing module, the keyboard multiplexing shutdown module is electrically connected with the single-chip microcomputer module, and the battery module is electrically connected with the single-chip microcomputer module through the battery monitoring module.
The mining remote controller is started by multiplexing a starting button, and after the starting button is pressed for 3 seconds for a long time, the remote controller is started, and the power supply is controlled by the singlechip to work so as to maintain the operation of equipment; when the power-off time is needed, the multiplexing power-off key is pressed, the singlechip detects and then controls the power supply to be powered off, and the remote controller finishes power-off and completely powers off; the battery electric quantity can be judged by monitoring the battery voltage, the battery is required to be replaced when the automatic shutdown is carried out under the low voltage, the remote controller is ensured to reliably work under the normal voltage condition, and the unreliable control under the undervoltage condition is avoided.
As shown in the schematic circuit diagram of fig. 10, VCC is a battery input terminal, and the MOS transistor VT1 is in an off state, and the remote controller is in a completely off state, so that the battery power is not consumed.
The power-on button AN1 and the power-off button AN2 are multiplexing buttons, and after the power-on is completed, the two keys can realize corresponding other required functions, and the functions are realized by long-time pressing of the buttons when the power-on is started.
When the start button AN1 is pressed, the optocoupler B1 acts to start VT1, the rectifier VC is electrified, the voltage is stabilized to be the corresponding voltage required by the singlechip through D1, the state of the start button AN1 is monitored after the singlechip is electrified, when the condition that the button is continuously pressed for a certain time (generally 3 seconds according to the program requirement) is monitored, the singlechip is judged to be needed to start, the singlechip controls POW_CON to be high level, the triode VT2 is used for controlling VT1 to be connected, the singlechip is not influenced after the start button is disconnected, and the start is successful.
After the starting-up is completed, the starting-up button is changed into a normal function key, after the button AN1 is pressed, the control triode VT3 is communicated with a high level, the control VT4 triode is IN short circuit with the ground, the POW_IN-1 is connected to a pin of the singlechip, the level is changed from the high level to the low level, and the singlechip can detect and judge the state of the button through the pin to realize the corresponding function.
The No. 1 pin of the shutdown button AN2 is connected with the pin of the singlechip, the shutdown button AN2 is at a high level when disconnected, the shutdown button AN2 is at a low level when pressed, the normal short-time press is at a normal button function, when the button is pressed for a long time (according to a program requirement, generally 3 seconds), the shutdown is judged to be needed, the singlechip controls the POW_CON to output at a low level, the VT1 is disconnected, and the equipment is completely powered off.
As shown in the circuit diagram of the battery monitoring module shown in fig. 11, VCC is a battery terminal, the single-chip microcomputer monitors the battery power by performing AD conversion through an ad_jc pin, when the voltage needs to be monitored, the con_ad_jc needs to be controlled to be high to control the transistor Q1 to be turned on, and meanwhile, AD conversion is performed, when the voltage is monitored to be low, the pow_con is controlled to cut off the power supply to shut down, so that the remote controller is ensured to perform equipment control under the normal voltage condition, unreliable control due to the low voltage is avoided, and when the voltage is not monitored, the con_ad_jc is controlled to be turned off to reduce the power consumption.
In addition, the mining working face and belt transportation monitoring system also comprises a belt and working face automatic speed regulating system, wherein the belt and working face automatic speed regulating system is respectively connected with a mining working face communication control device and a mining belt conveyor protection device, the belt and working face automatic speed regulating system comprises a speed regulating controller, a plurality of main controllers connected with the speed regulating controller and a coal flow monitoring device connected with the main controllers, and the concrete layout of the belt and working face automatic speed regulating system is shown in figure 12. The coal flow monitoring device adopts a mining intrinsic safety type explosion-proof mode, and the device consists of a laser imaging sensor (a laser probe), a mining intrinsic safety type speed/displacement sensor, a material flow processor and other equipment.
The laser imaging sensor adopts the ranging principle of a triangular ranging acquisition module to emit an infrared light beam according to a certain angle by a linear infrared laser emitter, the linear light beam is reflected back after encountering a measured object, and the reflected light is detected by a photosensitive detector to acquire an offset L. As shown in fig. 13, the distance d from the laser to a certain point of the object can be obtained from the known focal length f of the photoreceptor, the wheelbase X between the emitter and the photoreceptor, the formula is d=x·f/L, since the linear infrared light has the characteristic of being linear, a group of distance data (discrete data with the maximum resolution of P) distributed in a straight line can be calculated according to the principle of the above infrared triangular ranging, so that the two-dimensional section of the measured object can be obtained, the two-dimensional triangular ranging acquisition module (defined as the acquisition resolution of P) is controlled by the singlechip, the instantaneous two-dimensional section profile h (P) of the coal transported on the belt conveyor is acquired, the three-dimensional reconstruction is performed by the belt displacement data X, the discrete three-dimensional map data h (P, X) of the coal is acquired, the three-dimensional data is used for accumulation calculation, and the relative coal quantity M in unit time is calculated according to the calculation formula as follows:
the transmitter changes the output mode of the laser from an original point to a line light, and obtains data of a scanning section (discrete data with maximum resolution of P) at one time by measuring the reflection of the line light on a target object to be measured, which is recorded as h (P), and the advantage of the method is that the scanning speed can be fast, the precision is high, and the method is very effective and very cost-effective for the ranging scanning of a short distance (< 10 m).
The belt displacement speed sensor can detect belt displacement pulses. Each time the belt runs 0.0625m, one pulse is generated. Assuming a belt length D, n=d/0.00625, the amount of coal on the belt is Σmi, i=0-n. The data of each displacement pulse of the coal flow sensor are uploaded to a speed regulation controller through an optical fiber Ethernet, the coal distribution condition of the whole coal flow system is recorded in the speed regulation controller, and the belt speed regulation controller controls each belt to realize automatic speed regulation.
The flow of the automatic speed regulation of each belt is controlled by the belt speed regulation controller as shown in fig. 14, the current belt height curve is detected by the sensor, the current belt height curve is compared with the empty belt height curve, the sectional area of coal is fitted by the system, the product of the sectional area and the speed is integrated with time, the distribution of the coal on the belt, the instantaneous flow and the estimated time reaching the next belt are calculated, and therefore the running speed of the belt is controlled.
The invention adopts a bus type power supply and communication mode, and because of the severe coal mine field environment and complex electromagnetic environment, the system adopts redundant heterogeneous bus communication in order to ensure the reliability of the communication system. As shown in fig. 15, the present invention includes a CAN bus and LIN bus communication signals in a communication cable along a line of a control system, and an intrinsic safety type controller communicates with devices along the line in real time through two buses, so as to process communication data of the two buses at the same time, thereby realizing control and protection functions. When one of the buses fails, the data flow of the equipment can automatically switch the data channels, and finally normal transmission of data is realized.
The system adopts a bus type to supply power for the line equipment. The main power consumption of the device along the line is a locking module and a telephone module. The telephone module power consumption mainly charges the internal battery. Because the system belongs to an explosion-proof product, the system is limited by an intrinsic safety power supply, and the power supply parameter is 18V950mA. The majority of the belt length is between 1000m and 2000m, with a relatively large pressure drop along the line. The system has contradiction between the capacity of a power supply module, the charging current of a telephone and the voltage of a tail: the larger the charging current of the telephone is, the longer the broadcasting time of the telephone is, but the abnormal work of the equipment and the protection of the power supply module are easily caused by the too low tail voltage; the telephone charging current is small, the voltage of the tail of the telephone is increased, but the telephone battery is easy to be damaged due to power shortage. Management of power consumption along the line will ensure maximum charging of the phone module in the case of power supply capacity and terminal voltage.
The intrinsic safety power supply can detect the current load of the intrinsic safety power supply, the telephone module can detect the current voltage of the current battery, the charging current of the telephone is controlled, and the terminal can detect the voltage along the tail of the telephone.
The system also has a network audio transmission function, and can realize the underground call by ground dispatching through the network. In order to solve the problem of too small underground sound, a bidirectional audio amplification function is adopted.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (1)
1. The mining working face and belt transportation monitoring system is characterized by comprising a ground industrial personal computer, an underground centralized control center, a mining working face communication control device, a mining belt conveyor protection device and an exchanger;
the underground centralized control center is connected with the ground industrial personal computer, and the mining working face communication control device and the mining belt conveyor protection device are respectively connected with the underground centralized control center through the exchanger;
the mining belt conveyor protection device comprises a crossheading belt protection device, a main roadway belt protection device and a main well belt protection device, and further comprises a transmission optical cable, an explosion-proof camera, an explosion-proof computer and an explosion-proof display; the mining working face communication control device is connected with the switch through optical fibers, the Ethernet is used for transmission, the explosion-proof cameras are used for optical fiber cascade transmission, and the explosion-proof cameras can be connected with the underground explosion-proof switch or a host according to the field condition;
the mining belt conveyor protection device further comprises a mining intrinsic safety type programmable controller, a mining intrinsic safety type public address telephone, a mining intrinsic safety type An Jiting lock, a mining intrinsic safety type wireless remote controller, a mining intrinsic safety type speed sensor, a mining intrinsic safety type material flow sensor, a mining intrinsic safety type smoke sensor, a mining intrinsic safety type coal pile sensor, a mining explosion-proof electromagnetic valve, a mining intrinsic safety type longitudinal tearing sensor, an explosion-proof camera, a related explosion-proof power supply, an explosion-proof display and an explosion-proof computer, wherein the mining intrinsic safety type public address telephone is connected with the mining intrinsic safety type programmable controller, the mining intrinsic safety type public address telephone is connected with the explosion-proof and intrinsic safety type power supply box through a locking switch, and the mining intrinsic safety type public address telephone is connected with a deviation switch on the belt conveyor;
the mining intrinsic safety type speed sensor, the mining intrinsic safety type material flow sensor, the mining intrinsic safety type smoke sensor, the mining intrinsic safety type coal pile sensor and the mining intrinsic safety type longitudinal tearing sensor are arranged around the belt conveyor and used for sensing various operation conditions of the belt conveyor;
the mining intrinsic safety type public address telephone comprises an external power input module, a current-limiting charging circuit module, a first voltage-stabilizing module, a charging switching module, a first battery module and a first single-chip microcomputer module, wherein the external power input module is electrically connected with the current-limiting charging circuit module, the current-limiting charging circuit module is electrically connected with the first battery module through the first voltage-stabilizing module, the first single-chip microcomputer module is electrically connected with the first battery module, and the first single-chip microcomputer module is electrically connected with the current-limiting charging circuit module through the charging switching module;
the mining intrinsic safety type public address telephone main control adopts a singlechip for control, corresponding charging current is controlled in a program-controlled manner through communication, 8-gear charging current is used for adjustment through combination, and dynamic program-controlled adjustment is carried out by matching with battery electric quantity; the external charging power supply V+ is powered by intrinsic safety DC18V, a constant-current charging circuit which can be arranged is formed by a rectifier U1, a dial switch S1, resistors R1, R2, R3 and R6, and then the charging voltage is regulated to a required charging voltage by the rectifier U2, and the charging voltage is set to be the voltage when the battery is fully charged; when the battery is not charged or the voltage is lower, charging is carried out by using the controlled maximum charging current, the charging current is gradually reduced along with the rising of the battery voltage, when the battery voltage is close to the charging voltage, the charging is automatically stopped when the battery voltage is full, the charging is restarted after the voltage is reduced, so that the charging is reciprocated, the programmed charging is that the SCM is used for controlling three control ports of CON 5MA, CON 10MA and CON 20MA, the corresponding control ports are in one-to-one correspondence with a dial switch S1, the dial switch S1 is fixedly arranged and used for setting the minimum charging current, the programmed control is in a multiplexing state and has high priority, the charging current is set to be 5mA,10mA,15mA,20mA,25mA,30mA,35mA and 40mA, eight gear adjustment steps are carried out, the SCM is used for receiving a control signal through remote communication, controlling the corresponding control ports to control the charging current or dynamically adjusting the charging current through monitoring the battery voltage, the charging control circuit is used for realizing the maximum current limiting value adjustment through the on-off of the corresponding current limiting resistor, the SCM is used for controlling whether the CON_AD_JC port is controlled to be converted to be required to be converted to be in a state, the control circuit is monitored by the SCM, the control circuit is used for detecting whether the voltage needs to be converted to a normal power consumption, the control circuit is monitored by the SCM, the control circuit is controlled to be 30, the mining working face of the coal mine and the intrinsic safety type public address telephone for the belt along the line are provided with wireless modules, the transportation monitoring system is provided with an intrinsic safety type wireless remote controller for the mine, the intrinsic safety type wireless remote controller for the mine can control the start, stop and scram of the belt conveyor at any position along the belt and display the state of the belt conveyor, and the wireless modules adopt FYS50 wireless modules, wireless frequency 433MHz, wireless transmitting power of 20dBM and wireless transmitting distance of 50m;
the power supply control circuit of the mining intrinsic safety type wireless remote controller comprises a keyboard multiplexing startup module, a keyboard multiplexing shutdown module, a second battery module, a power supply on-off circuit module, a second voltage stabilizing module, a battery monitoring module and a second single-chip microcomputer module, wherein the keyboard multiplexing startup module, the second battery module and the second single-chip microcomputer module are respectively and electrically connected with the power supply on-off circuit module, the power supply on-off circuit module is electrically connected with the second single-chip microcomputer module through the second voltage stabilizing module, the keyboard multiplexing shutdown module is electrically connected with the second single-chip microcomputer module, and the second battery module is electrically connected with the second single-chip microcomputer module through the battery monitoring module; the battery electric quantity can be judged by monitoring the battery voltage, the battery is required to be replaced when the automatic shutdown is carried out at low voltage, the mine intrinsic safety type wireless remote controller is ensured to reliably work under the normal voltage condition, and unreliable control at undervoltage is avoided; VCC is a battery input end, MOS tube VT1 is IN a disconnection state IN a shutdown state, and the mining intrinsic safety type wireless remote controller is IN a complete power-off state, so that the battery electric quantity is not consumed; the power on button AN1 and the power off button AN2 are multiplexing buttons, after the power on is finished, the power on button AN1 and the power off button AN2 can realize corresponding other required functions, the functions are realized by long-time pressing of the buttons as a power on/off function, when the power on button AN1 is pressed, the optocoupler B1 acts to start VT1, the rectifier VC is electrified and is stabilized to the corresponding voltage required by the singlechip through D1, the singlechip is electrified, the state of the power on button AN1 is monitored, when the power on button AN1 is continuously pressed for a certain time, the singlechip is judged to be required to be powered on, POW_CON is controlled to be high level, the power on of the singlechip is not influenced after the power on button is disconnected, the power on button is successfully started, when the power on button is finished to be a normal function key, after the power on button AN1 is pressed, the triode VT3 is controlled to be communicated with high level, the triode VT4 is controlled to be short-circuited to ground, the POW_IN-1 is connected to a pin of the singlechip, the high level is changed to be low level, the singlechip can be detected to judge that the state of the button is required to be powered on, when the corresponding function is continuously pressed, the POW_CON is controlled to be low, the power off level is normally, when the power on button is normally pressed to be turned off, the POW_2 is controlled to be low, the power on is normally when the pin is required to be turned off to be normally, and the function is normally pressed to be turned off, VT1 is disconnected and the device is completely powered off; the mining working face and belt transportation monitoring system further comprises a belt and working face automatic speed regulating system, the belt and working face automatic speed regulating system is respectively connected with a mining working face communication control device and a mining belt conveyor protection device, the belt and working face automatic speed regulating system comprises a speed regulating controller, a plurality of main control machines connected with the speed regulating controller and a coal flow monitoring device connected with the main control machines, wherein the coal flow monitoring device adopts a mining intrinsic safety type explosion-proof mode and consists of a laser imaging sensor, a mining intrinsic safety type speed/displacement sensor and a material flow processor, the laser imaging sensor adopts a ranging principle of a triangular ranging acquisition module to emit an infrared light beam according to a certain angle for a linear infrared laser emitter, the linear light beam is reflected after encountering a measured object, the reflected light beam is detected by a light sensing detector, and the reflected light beam acquires an offset L;
the distance d from the laser to a certain point of an object can be obtained by knowing the focal length f of the photoreceptor and the wheelbase X between the emitter and the photoreceptor, the formula is d= X.f/L, as linear infrared light has the characteristic of being linear, a group of linear distributed distance data can be calculated according to the principle of infrared triangulation ranging, thus obtaining the two-dimensional section of the measured object, a singlechip is used for controlling a two-dimensional triangulation ranging acquisition module, the acquisition resolution is defined as P, the instantaneous two-dimensional section outline h (P) of coal transported on a belt conveyor is acquired, three-dimensional reconstruction is carried out by the belt displacement data X, discrete three-dimensional map data h (P, X) of the coal is obtained, the three-dimensional data is used for accumulation calculation, and the relative coal quantity M in unit time is calculated according to the following calculation formula:
the method comprises the steps of carrying out a first treatment on the surface of the The transmitter changes the output mode of the laser from an original point to a line light, the reflection of the line light on a target object to be measured is measured to obtain data of a scanning section at one time, the maximum resolution is discrete data of P, the discrete data is recorded as h (P), a displacement speed sensor of the belt can detect displacement pulses of the belt, each time the belt runs for 0.0625m, a pulse is generated, the data of each displacement pulse of the coal flow sensor is transmitted to the speed regulation controller through the optical fiber Ethernet, the coal distribution condition of the whole coal flow system is recorded in the speed regulation controller, and the speed regulation controller of the belt controls the whole belt to realize automatic speed regulation;
the belt speed regulation controller controls the whole belt to realize automatic speed regulation, firstly, a sensor is used for detecting the current belt height curve, the current belt height curve is compared with an empty belt height curve, the cross section area of coal is fitted by the system, the product of the cross section area and the speed is integrated with time, and the distribution of the coal on the belt, the instantaneous flow and the time of the coal reaching the next belt are calculated, so that the running speed of the belt is controlled; the system also has a network audio transmission function, can realize the ground dispatching of underground communication through the network audio, and adopts a bidirectional audio amplification function to solve the problem of too small underground sound.
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| CN113003144B (en) * | 2021-02-26 | 2023-07-28 | 神华神东煤炭集团有限责任公司 | Control system of adhesive tape machine |
| CN114071259A (en) * | 2021-12-01 | 2022-02-18 | 鄂尔多斯市隆圣矿山机电股份有限公司 | Intelligent integrated dispatching control system for mining machine transportation |
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