CN109884952B - Soft start system controller for coal mine double-speed scraper conveyor - Google Patents
Soft start system controller for coal mine double-speed scraper conveyor Download PDFInfo
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- CN109884952B CN109884952B CN201910211817.6A CN201910211817A CN109884952B CN 109884952 B CN109884952 B CN 109884952B CN 201910211817 A CN201910211817 A CN 201910211817A CN 109884952 B CN109884952 B CN 109884952B
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Abstract
A soft start system controller for a coal mine double-speed scraper conveyor comprises a microprocessor, an isolation module, a bus interface and an input/output interface, wherein the bus interface and the input/output interface are connected with the microprocessor through the isolation module, and the microprocessor comprises an MPU1, an MPU2 and an MPU 3; the isolation module comprises an intrinsically safe isolation module and an RS485 isolation module; the intrinsically safe isolation module comprises a CAN bus isolation module and an RS485 bus isolation module; the controller is provided with an RS485 interface and a CAN interface which have intrinsic safety, CAN provide communication capability to the outside in the underground environment of a coal mine, and CAN be directly connected to a coal mine monitoring ring network; the high speed and high reliability of the CAN bus interface CAN realize the coordination and on-line between the 'head' and 'tail' devices of the scraper conveyor, achieve the interconnection interlocking, synchronous start and stop, synchronous high and low speed switching, and realize the power balance of the 'head' and 'tail' devices during the soft start.
Description
Technical Field
The invention relates to the technical field of mining electricity, in particular to a soft start system controller for a coal mine double-speed scraper conveyor.
Background
Most domestic coal mine scraper conveyors adopt a double-roller dragging chain structure, and 2 double-speed main motors are needed to drive double rollers to jointly drag the chain. Two-speed motors must start simultaneously, stop simultaneously, switch speeds simultaneously, fail safe and fail lock simultaneously, and power balance between the two motors. The system control comprises two main loop gating controls, one main loop bypass control, soft start control, corresponding logic control, thyristor control, comprehensive protection and driving parts. At present, a medium-sized and small-sized conventional PLC is generally selected as a system controller. An RS485 bus is adopted between the PLC and the 2 comprehensive protectors and between the PLC and the soft start controller in operation to collect data; and the PLC and the display screen also upload data in a communication mode. The work is got up to cause data acquisition slow like this, upload speed is slow (all be more than S level), can not smooth monitoring running state, be unfavorable for on-the-spot real time monitoring, be unfavorable for the power balance when many equipment are online, be unfavorable for system 'S network deployment, if select a plurality of PLC communication module will increase a lot of costs again, and the colliery requires the external communication interface of equipment to be "essential safety type", PLC' S communication interface is not conform to the coal mine safety requirement, can not directly adopt its interface to externally transmit data, therefore need redesign a soft start system controller for colliery scraper conveyor at double speed.
The present invention is an improvement to solve the above problems.
Disclosure of Invention
The invention aims to provide a soft start system controller for a coal mine double-speed scraper conveyor, which realizes a multi-MPU multi-module coordination combined control scheme, has the capability of simultaneously acquiring multi-path data, improves the real-time control performance of the system controller, improves the working efficiency and is specially used for the coal mine double-speed scraper conveyor.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a soft start system controller for a coal mine double-speed scraper conveyor comprises a microprocessor, an isolation module, a bus interface and an input/output interface, wherein the bus interface and the input/output interface are connected with the microprocessor through the isolation module, the microprocessor comprises an MPU1, an MPU2 and an MPU3, and the MPU1 comprises pins P _ CAN, P _ UART1 and P _ UART 2;
the isolation module comprises an intrinsically safe isolation module and an RS485 isolation module;
the intrinsically safe isolation module comprises a CAN bus isolation module and an RS485 bus isolation module;
the RS485 isolation module comprises a first RS485 bus isolation module, a second RS485 bus isolation module, a third RS485 bus isolation module, a fourth RS485 bus isolation module and a fifth RS485 bus isolation module;
the input/output interface comprises an input isolation module and an output isolation module;
the bus interface comprises a CAN bus interface and an RS485 bus interface;
the RS485 bus interface comprises a sixth RS485 bus interface, a first RS485 bus interface, a second RS485 bus interface, a third RS485 bus interface, a fourth RS485 bus interface and a fifth RS485 bus interface;
one end of the CAN bus isolation module is connected with a pin P _ CAN of the MPU1, and the other end of the CAN bus isolation module is connected with a CAN bus interface;
one end of the RS485 bus isolation module is connected with a pin P _ UART1 of the MPU1, and the other end of the RS485 bus isolation module is connected with a sixth RS485 bus interface;
one end of the first RS485 bus isolation module is connected with a pin P _ UART2 of the MPU1, and the other end of the first RS485 bus isolation module is connected with a first RS485 bus interface;
furthermore, the CAN bus isolation module, the CAN bus interface, the RS485 bus isolation module and the sixth RS485 bus interface are all intrinsically safe;
furthermore, the RS485 bus isolation module is connected with a sixth RS485 bus interface, and the first RS485 bus isolation module is connected with the first RS485 bus interface;
an input port isolation conditioning circuit is arranged in the input isolation module, an output port isolation conditioning circuit is arranged in the output isolation module, a parallel bus, a bus control line, an input interface and an output interface are further arranged in the controller, and the MPU1, the MPU2 and the MPU3 are connected through the parallel bus;
the MPU1 further comprises pins P _ DI and P _ DO, one end of the input port isolation conditioning circuit is connected with the pin P _ DI of the MPU1, and the other end of the input port isolation conditioning circuit is connected with the input interface;
one end of the output port isolation conditioning circuit is connected with a pin P _ DO of the MPU1, and the other end of the output port isolation conditioning circuit is connected with an output interface;
specifically, 16 parallel buses are arranged, and 8 bus control lines are arranged;
the MPU2 comprises pins P2_ UART1 and P2_ UART2, one end of the second RS485 bus isolation module is connected with the pin P2_ UART1 of the MPU2, and the other end of the second RS485 bus isolation module is connected with the second RS485 bus interface;
one end of the third RS485 bus isolation module is connected with a pin P2_ UART2 of the MPU2, and the other end of the third RS485 bus isolation module is connected with a third RS485 bus interface;
the MPU3 comprises pins P3_ UART1 and P3_ UART2, one end of the fourth RS485 bus isolation module is connected with the pin P3_ UART1 of the MPU3, and the other end of the fourth RS485 bus isolation module is connected with the fourth RS485 bus interface;
one end of the fifth RS485 bus isolation module is connected with a pin P3_ UART2 of the MPU3, and the other end of the fifth RS485 bus isolation module is connected with a fifth RS485 bus interface;
the MPU1 further includes pins P _ PCI _ B and P _ PCI _ C, the MPU2 further includes pins P2_ PCI _ B and P2_ PCI _ C, and the MPU3 further includes pins P3_ PCI _ B and P3_ PCI _ C, wherein the pin P _ PCI _ B is connected to the pins P2_ PCI _ B and P3_ PCI _ C, respectively, and the pin P _ PCI _ C is connected to the pins P2_ PCI _ C and P3_ PCI _ B, respectively.
The invention has the beneficial effects that: each RS485 bus only drives one slave machine, so that the transmission time consumption is low, the multi-MPU multi-module coordination combined control scheme is realized by adopting the multi-RS 485 bus interface, the capacity of simultaneously acquiring multi-channel data is realized, the real-time control performance of the system controller is improved, and the working efficiency is high; the controller is provided with an RS485 interface and a CAN interface which have intrinsic safety, CAN provide communication capability to the outside in the underground environment of a coal mine, and CAN be directly connected to a coal mine monitoring ring network; the high speed and high reliability of the CAN bus interface CAN realize the coordination and on-line between the 'head' and 'tail' devices of the scraper conveyor, achieve the interconnection interlocking, synchronous start and stop, synchronous high and low speed switching, and realize the power balance of the 'head' and 'tail' devices during the soft start.
Drawings
FIG. 1 is a functional block diagram of a soft start system controller for a two-speed scraper conveyor in a coal mine according to the present invention.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the invention is further described with reference to the figures and the specific embodiments.
Referring to fig. 1, the soft start system controller for the coal mine double-speed scraper conveyor comprises a microprocessor, an isolation module, a bus interface and an input/output interface, wherein the bus interface and the input/output interface are connected with the microprocessor through the isolation module, the microprocessor comprises an MPU1, an MPU2 and an MPU3, and the MPU1 comprises pins P _ CAN, P _ UART1 and P _ UART 2;
the isolation module comprises an intrinsically safe isolation module and an RS485 isolation module;
the intrinsically safe isolation module comprises a CAN bus isolation module 109 and an RS485 bus isolation module 107;
the RS485 isolation module comprises a first RS485 bus isolation module 105, a second RS485 bus isolation module 201, a third RS485 bus isolation module 203, a fourth RS485 bus isolation module 301 and a fifth RS485 bus isolation module 303;
the input and output interface comprises an input isolation module 101 and an output isolation module 103;
the bus interface comprises a CAN bus interface 110 and an RS485 bus interface;
the RS485 bus interface comprises a sixth RS485 bus interface 108, a first RS485 bus interface 106, a second RS485 bus interface 202, a third RS485 bus interface 204, a fourth RS485 bus interface 302 and a fifth RS485 bus interface 304;
one end of the CAN bus isolation module 109 is connected with a pin P _ CAN of the MPU1, and the other end of the CAN bus isolation module 109 is connected with the CAN bus interface 110;
one end of the RS485 bus isolation module 107 is connected with a pin P _ UART1 of the MPU1, and the other end of the RS485 bus isolation module 107 is connected with a sixth RS485 bus interface 108;
one end of the first RS485 bus isolation module 105 is connected with a pin P _ UART2 of the MPU1, and the other end of the first RS485 bus isolation module 105 is connected with the first RS485 bus interface 106;
further, the CAN bus isolation module 109, the CAN bus interface 110, the RS485 bus isolation module 107, and the sixth RS485 bus interface 108 are all intrinsically safe;
furthermore, the RS485 bus isolation module 107 is connected to the sixth RS485 bus interface 108, and the first RS485 bus isolation module 105 is connected to the first RS485 bus interface 106;
an input port isolation conditioning circuit is arranged in the input isolation module 101, an output port isolation conditioning circuit is arranged in the output isolation module 103, a parallel bus, a bus control line, an input interface 102 and an output interface 104 are further arranged in the controller, and the MPU1, the MPU2 and the MPU3 are connected through the parallel bus;
the MPU1 further comprises pins P _ DI and P _ DO, one end of the input port isolation conditioning circuit is connected with pin P _ DI of the MPU1, and the other end of the input port isolation conditioning circuit is connected with the input interface 102;
one end of the output port isolation conditioning circuit is connected with a pin P _ DO of the MPU1, and the other end of the output port isolation conditioning circuit is connected with the output interface 104;
specifically, 16 parallel buses are arranged, and 8 bus control lines are arranged;
the MPU2 comprises pins P2_ UART1 and P2_ UART2, one end of the second RS485 bus isolation module 201 is connected with the pin P2_ UART1 of the MPU2, and the other end of the second RS485 bus isolation module 201 is connected with the second RS485 bus interface 202;
one end of the third RS485 bus isolation module 203 is connected with a pin P2_ UART2 of the MPU2, and the other end of the third RS485 bus isolation module 203 is connected with the third RS485 bus interface 204;
the MPU3 comprises pins P3_ UART1 and P3_ UART2, one end of the fourth RS485 bus isolation module 301 is connected with the pin P3_ UART1 of the MPU3, and the other end of the fourth RS485 bus isolation module 301 is connected with the fourth RS485 bus interface 302;
one end of the fifth RS485 bus isolation module 303 is connected with a pin P3_ UART2 of the MPU3, and the other end of the fifth RS485 bus isolation module 303 is connected with the fifth RS485 bus interface 304;
the MPU1 further includes pins P _ PCI _ B and P _ PCI _ C, the MPU2 further includes pins P2_ PCI _ B and P2_ PCI _ C, and the MPU3 further includes pins P3_ PCI _ B and P3_ PCI _ C, wherein the pin P _ PCI _ B is connected to the pins P2_ PCI _ B and P3_ PCI _ C, respectively, and the pin P _ PCI _ C is connected to the pins P2_ PCI _ C and P3_ PCI _ B, respectively;
each RS485 bus only drives one slave machine, so that the transmission time consumption is low, the multi-MPU multi-module coordination combined control scheme is realized by adopting the multi-RS 485 bus interface, the capacity of simultaneously acquiring multi-channel data is realized, the real-time control performance of the system controller is improved, and the working efficiency is high; the controller is provided with an RS485 interface and a CAN interface which have intrinsic safety, CAN provide communication capability to the outside and CAN be directly accessed to a coal mine monitoring ring network; the high speed and high reliability of the CAN bus interface CAN realize the coordination and on-line between the 'head' and 'tail' devices of the scraper conveyor, achieve the interconnection interlocking, synchronous start and stop, synchronous high and low speed switching, and realize the power balance of the 'head' and 'tail' devices during the soft start.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a soft system controller that opens for colliery double speed drag conveyor, includes microprocessor, isolation module, bus interface and input/output interface pass through isolation module and link to each other its characterized in that with microprocessor:
the microprocessor comprises an MPU1, an MPU2 and an MPU3, wherein the MPU1 comprises pins P _ CAN, P _ UART1 and P _ UART 2;
the isolation module comprises an intrinsically safe isolation module and an RS485 isolation module;
the intrinsically safe isolation module comprises a CAN bus isolation module (109) and an RS485 bus isolation module (107);
the RS485 isolation module comprises a first RS485 bus isolation module (105), a second RS485 bus isolation module (201), a third RS485 bus isolation module (203), a fourth RS485 bus isolation module (301) and a fifth RS485 bus isolation module (303);
the input and output interface comprises an input isolation module (101) and an output isolation module (103); an input port isolation conditioning circuit is arranged in the input isolation module (101), an output port isolation conditioning circuit is arranged in the output isolation module (103), a parallel bus, a bus control line, an input interface (102) and an output interface (104) are further arranged in the controller, and the MPU1, the MPU2 and the MPU3 are connected through the parallel bus;
the MPU1 further comprises pins P _ DI and P _ DO, one end of the input port isolation conditioning circuit is connected with the pin P _ DI of the MPU1, and the other end of the input port isolation conditioning circuit is connected with the input interface (102);
one end of the output port isolation conditioning circuit is connected with a pin P _ DO of the MPU1, and the other end of the output port isolation conditioning circuit is connected with an output interface (104);
the bus interface comprises a CAN bus interface (110) and an RS485 bus interface;
the RS485 bus interface comprises a sixth RS485 bus interface (108), a first RS485 bus interface (106), a second RS485 bus interface (202), a third RS485 bus interface (204), a fourth RS485 bus interface (302) and a fifth RS485 bus interface (304);
one end of the CAN bus isolation module (109) is connected with a pin P _ CAN of the MPU1, and the other end of the CAN bus isolation module (109) is connected with a CAN bus interface (110);
one end of the RS485 bus isolation module (107) is connected with a pin P _ UART1 of the MPU1, and the other end of the RS485 bus isolation module (107) is connected with a sixth RS485 bus interface (108);
one end of the first RS485 bus isolation module (105) is connected with a pin P _ UART2 of the MPU1, and the other end of the first RS485 bus isolation module (105) is connected with a first RS485 bus interface (106);
the MPU2 comprises pins P2_ UART1 and P2_ UART2, one end of the second RS485 bus isolation module (201) is connected with the pin P2_ UART1 of the MPU2, and the other end of the second RS485 bus isolation module (201) is connected with the second RS485 bus interface (202); one end of the third RS485 bus isolation module (203) is connected with a pin P2_ UART2 of the MPU2, and the other end of the third RS485 bus isolation module (203) is connected with a third RS485 bus interface (204);
the MPU3 comprises pins P3_ UART1 and P3_ UART2, one end of a fourth RS485 bus isolation module (301) is connected with a pin P3_ UART1 of the MPU3, and the other end of the fourth RS485 bus isolation module (301) is connected with a fourth RS485 bus interface (302); one end of the fifth RS485 bus isolation module (303) is connected with a pin P3_ UART2 of the MPU3, and the other end of the fifth RS485 bus isolation module (303) is connected with the fifth RS485 bus interface (304).
2. The soft start system controller for the coal mine double-speed scraper conveyor as claimed in claim 1, wherein the CAN bus isolation module (109), the CAN bus interface (110), the RS485 bus isolation module (107) and the sixth RS485 bus interface (108) are all intrinsically safe.
3. The soft start system controller for the coal mine double-speed scraper conveyor as claimed in claim 1, wherein an input port isolation conditioning circuit is arranged in the input isolation module (101), an output port isolation conditioning circuit is arranged in the output isolation module (103), a parallel bus, a bus control line, an input interface (102) and an output interface (104) are further arranged in the controller, and the MPU1, the MPU2 and the MPU3 are connected by the parallel bus;
the MPU1 further comprises pins P _ DI and P _ DO, one end of the input port isolation conditioning circuit is connected with the pin P _ DI of the MPU1, and the other end of the input port isolation conditioning circuit is connected with the input interface (102);
one end of the output port isolation conditioning circuit is connected with a pin P _ DO of the MPU1, and the other end of the output port isolation conditioning circuit is connected with an output interface (104).
4. The soft start system controller for a coal mine two speed drag conveyor as in claim 3 wherein there are 16 parallel buses and 8 bus control lines.
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| CN201910211817.6A CN109884952B (en) | 2019-03-20 | 2019-03-20 | Soft start system controller for coal mine double-speed scraper conveyor |
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| CN201910211817.6A CN109884952B (en) | 2019-03-20 | 2019-03-20 | Soft start system controller for coal mine double-speed scraper conveyor |
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| CN109884952B true CN109884952B (en) | 2022-02-01 |
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| CN108163464A (en) * | 2017-12-15 | 2018-06-15 | 太原理工大学 | A kind of power dynamic equilibrium redundancy control apparatus of frequency conversion all-in-one machine driving scrapper conveyor |
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| US6154679A (en) * | 1997-06-06 | 2000-11-28 | Rockwell Technologies, Inc. | Bus isolator for industrial control system providing intrinsically safe operation |
| CN201516981U (en) * | 2009-10-18 | 2010-06-30 | 淮南市矿用电子技术研究所 | Monitoring substation device of rubber belt conveyor |
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