CN115037567A - Network transmission device and system of hydraulic support controller - Google Patents
Network transmission device and system of hydraulic support controller Download PDFInfo
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- CN115037567A CN115037567A CN202210509270.XA CN202210509270A CN115037567A CN 115037567 A CN115037567 A CN 115037567A CN 202210509270 A CN202210509270 A CN 202210509270A CN 115037567 A CN115037567 A CN 115037567A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 108
- 238000004891 communication Methods 0.000 claims abstract description 191
- 238000002955 isolation Methods 0.000 claims description 25
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000005065 mining Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40169—Flexible bus arrangements
- H04L12/40176—Flexible bus arrangements involving redundancy
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/12—Control, e.g. using remote control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention provides a network transmission device and a system of a hydraulic support controller, wherein the device comprises: the system comprises a first interface module, a second interface module and a logic control module for connecting the first interface module and the second interface module; the first interface module and the second interface module respectively comprise a first communication channel for transmitting public data and a second communication channel for transmitting adjacent frame data; one end of the first communication channel is connected with the logic control module, and the other end of the first communication channel is connected to the twisted pair bus; the first communication channel comprises a high pass filter circuit and a physical interface transceiver circuit; one end of the second communication channel is connected with the logic control module, and the other end of the second communication channel is connected to the twisted pair bus; the second communication channel comprises a low-frequency serial port communication module. According to the method and the device, the digital serial port signal is superposed on the bus communication channel, so that two paths of redundant communication are realized, the complexity of the system is simplified, and the cost and the power consumption of the system are reduced.
Description
Technical Field
The application relates to the technical field of hydraulic support control and fully mechanized mining automation, in particular to a network transmission device and a network transmission system of a hydraulic support controller.
Background
The electrohydraulic control system of the hydraulic support of the fully mechanized mining face is a key device for automatic and intelligent control of the fully mechanized mining face of a coal mine, the electrohydraulic control system of the hydraulic support is a communication network system consisting of a plurality of support controllers in the working face, and has the characteristics of large data volume, more control nodes, timeliness and the like, and high requirements on command real-time performance influencing safety such as sudden stop, locking, stopping and the like of the working face.
At present, the scheme of Ethernet bus and CAN bus independent physical link transmission or the transmission mode of two paths of CAN communication is mainly adopted at home, wherein the Ethernet bus completes the transmission of functional data such as grouping, automatic machine following, emergency stop and the like, and the CAN communication adopts point-to-point connection to complete the transmission of the functional data such as single frame non-automation and the like. However, in the manner of ethernet bus and redundant CAN communication bus, two physical transmission lines need to be arranged on the inter-rack bus cable to support the redundant communication scheme, which causes the problems of complex system, high power consumption, low reliability and the like due to the large number of inter-rack cables.
Disclosure of Invention
In order to solve the problem that the cable quantity is many, the system is complicated between two way physical transmission line racks of prior art, first aspect, this application provides a network transmission device of hydraulic support controller includes: the device comprises a first interface module, a second interface module and a logic control module for connecting the first interface module and the second interface module;
the first interface module and the second interface module respectively comprise a first communication channel for transmitting common data and a second communication channel for transmitting adjacent rack data;
one end of the first communication channel is connected with the logic control module, and the other end of the first communication channel is connected to a twisted pair bus; the first communication channel comprises a high pass filter circuit and a physical interface transceiver circuit;
one end of the second communication channel is connected with the logic control module, and the other end of the second communication channel is connected to the twisted pair bus; the second communication channel comprises a low-frequency serial port communication module;
the public data is transmitted through a first communication channel of a first interface module, the logic control module and a first communication channel of a second interface module; and the adjacent data is transmitted through a second communication channel of the first interface module, the logic control module and a second communication channel of the second interface module.
In one embodiment, the first communication channel includes a high-pass filter circuit, a low-pass filter circuit, and a physical interface transceiver circuit;
the high-pass filter circuit comprises a first high-pass filter and a second high-pass filter, wherein one end of the first high-pass filter is connected to a first line of the twisted pair bus, and the other end of the first high-pass filter is connected with a first interface of the physical interface transceiver circuit; one end of the second high-pass filter is connected to a second line of the twisted pair bus, and the other end of the second high-pass filter is connected with a second interface of the physical interface transceiver circuit;
one end of the low-pass filter circuit is connected to the first interface, and the other end of the low-pass filter circuit is connected to the second interface;
the physical interface transceiver circuit is further connected with the logic control module through a third interface, and the physical interface transceiver circuit comprises a two-core Ethernet physical layer transceiver.
In one embodiment, the low pass filter circuit is comprised of an RLC circuit or an RC circuit.
In one embodiment, the first high-pass filter and the second high-pass filter of the high-pass filter circuit are respectively composed of two isolation capacitors.
In one embodiment, the second communication channel of the first interface module includes a first serial communication receiving circuit and a first serial communication transmitting circuit, an input end of the first serial communication receiving circuit is connected to the first line of the twisted pair bus, and an output end of the first serial communication receiving circuit is connected to the first receiving interface of the logic control module; the input end of the first serial port communication transmission circuit is connected to the first transmission interface of the logic control module, and the output end of the first serial port communication transmission circuit is connected to the second wire of the twisted pair bus;
the second communication channel of the second interface module comprises a second serial port communication receiving circuit and a second serial port communication sending circuit, the input end of the second serial port communication receiving circuit is connected to the second wire of the twisted pair bus, and the output end of the second serial port communication receiving circuit is connected to the second receiving interface of the logic control module; the input end of the second serial port communication transmitting circuit is connected to a second transmitting interface of the logic control module, and the output end of the second serial port communication transmitting circuit is connected to a first wire of the twisted pair bus;
and the adjacent shelf data are transmitted through the first serial port communication receiving circuit, the logic control module and the second serial port communication sending circuit, or transmitted through the second serial port communication receiving circuit, the logic control module and the first serial port communication sending circuit.
In one embodiment, the first serial communication receiving circuit and the second serial communication receiving circuit are composed of an operational amplifier or a comparator.
In an embodiment, the first serial communication transmission circuit and the second serial communication transmission circuit are formed by an inverter chip or a buffer chip.
In one embodiment, the logic control module is a switch chip or a programmable logic controller chip.
In a second aspect, the present application provides a network transmission system of a hydraulic mount controller, comprising: a plurality of network transmission devices of any one of the hydraulic support controllers provided by the present application, and inter-rack communication buses for connecting different interface modules of the network transmission devices of adjacent hydraulic support controllers;
the inter-frame communication bus is a twisted pair bus, and the inter-frame communication bus is respectively connected with the twisted pair bus at the corresponding end of the network transmission device of the adjacent hydraulic support controller.
In one embodiment, the network transmission system of the hydraulic support controller further comprises at least one coupler disposed between the network transmission devices of adjacent hydraulic support controllers.
In one embodiment, the coupler comprises two isolation units, each isolation unit is formed by connecting a digital isolation chip and a high-pass filter capacitor in parallel, and each isolation unit is respectively connected with different buses in the inter-rack communication buses in series.
The utility model provides a network transmission device of hydraulic support controller and system's public bus communication adopts twisted-pair Ethernet technique, superposes digital serial signals on bus communication channel simultaneously, has realized two way redundant communications, does not increase cable quantity between the frame yet, simplifies the complexity of system to reduce system cost and consumption, realize that the transmission network bus satisfies the ann's designing requirement of comprehensive face of adopting.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a network transmission device of a hydraulic support controller provided in the present application.
Fig. 2 is another schematic diagram of a network transmission device of the hydraulic support controller provided in the present application.
Fig. 3 is another schematic diagram of a network transmission device of the hydraulic support controller provided in the present application.
Fig. 4 is a schematic diagram of a network transmission system of a hydraulic support controller provided in the present application.
Fig. 5 is another schematic diagram of a network transmission system of a hydraulic mount controller provided herein.
Reference numerals:
1-a first interface module; 2-a second interface module; 3-a logic control module; 4-twisted pair bus; 41. 42-line; 11. 12, 21, 22-communication channel; 111. 211-a high-pass filter circuit; 1111. 1112, 2111, 2112-high pass filter; 112. 212-a low pass filter circuit; 113. 213-physical interface transceiver circuitry; 121. 221-serial communication receiving circuit; 122. 222-a serial communication transmitting circuit; 1131. 1132, 1133-interface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a first aspect, the present application provides a network transmission device for a hydraulic support controller, where the device is disposed on a hydraulic support, and is used to implement data communication between hydraulic pressures and a bus and data communication between adjacent hydraulic pressures (i.e., data communication between different hydraulic pressures). As shown in fig. 1, the network transmission device of the hydraulic bracket controller comprises: a first interface module 1, a second interface module 2 and a logic control module 3 connecting the first interface module 1 and the second interface module 2. The first interface module 1 and the second interface module 2 each include a first communication channel for transmitting common data and a second communication channel for transmitting adjacent rack data. Specifically, referring to fig. 1, the first interface module 1 includes a communication channel 11 and a communication channel 12, and the second interface module 2 includes a communication channel 21 and a communication channel 22. The connection relationship among the modules is as follows: the communication channel 11 of the first interface module 1 is connected to the twisted pair bus 4 at one end and to the logic control module 3 at the other end, and the communication channel 12 is also connected to the twisted pair bus 4 at one end and to the logic control module 3 at the other end. Similarly, one end of the communication channel 21 of the second interface module 2 is connected to the twisted pair bus 4, the other end is connected to the logic control module 3, one end of the communication channel 22 is connected to the twisted pair bus 4, and the other end is connected to the logic control module 3. The twisted pair bus of the present application employs, for example, 100BASE-T1 twisted pairs.
The first communication channel for transmitting the public data is a high-speed bus communication channel which specifically comprises a high-pass filter circuit and a physical interface transceiver circuit, and the physical interface transceiver circuit comprises a two-core Ethernet physical layer transceiver; and the second communication channel for transmitting the data of the adjacent rack is a low-frequency serial port communication channel comprising a low-frequency serial port communication module. The specific structure of the two communication channels will be further explained in the subsequent embodiments.
Through the above connection manner, the communication channel 11 of the first interface module 1, the logic control module 3, and the communication channel 21 of the second interface module 2 constitute a communication channel for transmitting common data, and the common data can be transmitted to each hydraulic bracket through the twisted pair bus and the communication channel for transmitting the common data; the communication channel 12 of the first interface module 1, the logic control module 3, and the communication channel 22 of the second interface module 2 constitute a communication channel for transmitting adjacent rack data, and the adjacent rack data can realize data transmission between adjacent hydraulic supports through a twisted pair bus and the communication channel for transmitting the adjacent rack data. The utility model provides a public data realize in groups, with quick-witted automation and scram signal function, and adjacent frame data realize the non-automatic function of single-frame.
According to the communication structure, the low-frequency digital serial port communication module is superposed on the high-speed bus communication channel, the two paths of communication share one physical link, simultaneous transmission of data of hundred-million vehicle-mounted Ethernet and serial port signal data on a pair of twisted-pair wires is achieved, and the number of cables between racks cannot be increased while dual-redundancy communication is achieved. Compared with the existing two-way communication scheme, the method and the device have the advantages that the complexity of the fully mechanized face support control network system is simplified, the number of cables is reduced, the safe operation of the system is improved, the system cost and the power consumption are further reduced on the basis, and the high-efficiency production, energy conservation and consumption reduction of a coal mine are improved.
In one embodiment, the present application will further describe the specific structure of the communication channel 11 and the communication channel 21. As shown in the left part of fig. 2, the communication channel 11 of the first interface module 1 includes a high-pass filter circuit 111, a low-pass filter circuit 112, and a physical interface transceiver circuit 113, which may also be referred to as PHY chip for short. The high-pass filter circuit 111 further includes a high-pass filter 1111 and a high-pass filter 1112.
The connection relationship of each module in the communication channel 11 is: one end of the high-pass filter 1111 is connected to the line 41 in the twisted pair bus 4, and the other end is connected to the interface 1131 of the physical interface transceiver circuit 113; one end of the high pass filter 1112 is connected to line 42 in the twisted pair bus 4 and the other end is connected to an interface 1132 of the physical interface transceiver circuit 113; two ends of the low pass filter circuit 112 are connected to the interface 1131 and the interface 1132 of the physical interface transceiver circuit 113, respectively; the interface 1133 of the physical interface transceiver circuit 113 is connected with the logical control unit 3. It can be seen that the high pass filter circuit 111 is connected in series with the physical interface transceiver circuit 113, and the low pass filter circuit 112 is electrically connected in shunt to ground with the physical interface transceiver circuit 113.
The structure of the communication channel 21 is similar to that of the communication channel 11, and please refer to the right part of fig. 2, the communication channel 21 of the second interface module 2 includes a high-pass filter circuit 211, a low-pass filter circuit 212, and a physical interface transceiver circuit 213, which may include a two-core ethernet physical layer transceiver, such as a 100M/1000M two-core ethernet physical layer transceiver, referred to as PHY chip. The high-pass filter circuit 211 further includes a high-pass filter 2111 and a high-pass filter 2112.
The connection relationship of each module in the communication channel 21 is: one end of the high pass filter 2111 is connected to the line 41 in the twisted pair bus 4, and the other end is connected to the interface 2131 of the physical interface transceiver circuit 213; one end of the high pass filter 2112 is connected to the line 42 in the twisted pair bus 4, and the other end is connected to the interface 2132 of the physical interface transceiver circuit 213; the two ends of the low-pass filter circuit 212 are connected to the interface 2131 and the interface 2132 of the physical interface transceiver circuit 213, respectively; the interface 2133 of the physical interface transceiver circuit 213 is connected to the logical control unit 3. It can be seen that the high pass filter circuit 111 is connected in series with the physical interface transceiver circuit 113, and the low pass filter circuit 112 is electrically connected in shunt to ground with the physical interface transceiver circuit 113.
Further, the high-pass filter 1111, the high-pass filter 1112, the high-pass filter 2111 and the high-pass filter 2112 in this embodiment are respectively composed of two isolation capacitors, in other words, the high-pass filter circuit 111 and the high-pass filter circuit 211 are composed of 4 isolation capacitors, that is, each loop of the twisted pair bus common return line 41 and the line 42 is connected in series with two isolation capacitors, and the high-pass filter circuit can isolate the serial port low-frequency digital signal on the bus, so as to prevent the low-frequency signal from flowing into the ethernet circuit, which causes the ethernet bus communication abnormality.
The low-pass filter circuit 112 and the low-pass filter circuit 212 of this embodiment are composed of a conventional RLC circuit or an RC circuit, and are used to suppress an electrical signal with a frequency greater than a preset frequency, so as to achieve the purpose of suppressing higher harmonics and improve the EMI performance of the ethernet interface.
The logic control module 3 of this embodiment may be a switch chip or a programmable logic controller chip, and includes a MAC (media access controller) port, where the port supports one or more of RMII/MII/RGMII (media independent interface), and the first interface module 1 and the second interface module 2 are respectively connected to the physical interface transceiver circuit 113 and the physical interface transceiver circuit 213 through the RMII/MII/RGMII interface, so as to implement bus data exchange. In addition, the logic control module 3 also comprises two serial communication modules, namely TX1/RX1 and TX2/RX2 (see FIG. 3), which realize the transmission/reception of serial communication data between adjacent racks.
The data flow direction of the public data in the network transmission device of the hydraulic support controller of the application is as follows: entering from the twisted pair bus 4, transmitting along the high-pass filter circuit 111, the low-pass filter circuit 112, the physical interface transceiver circuit 113 of the first interface module 1, the logic control module 3, the physical interface transceiver circuit 213 of the first interface module 2, the low-pass filter circuit 212 and the high-pass filter circuit 211, and finally flowing into the bus 4 again; or enters from the twisted pair bus 4, is transmitted along the high-pass filter circuit 211, the low-pass filter circuit 212, the physical interface transceiver circuit 213, the logic control module 3, the physical interface transceiver circuit 113 of the first interface module 1, the low-pass filter circuit 112, and the high-pass filter circuit 111 of the second interface module 2, and finally flows into the twisted pair bus 4 again.
In one embodiment, the present application will further describe the specific structure of the communication channel 12 and the communication channel 22. As shown in the left part of fig. 3, the communication channel 12 of the first interface module 1 includes a serial communication receiving circuit 121 and a serial communication transmitting circuit 122, the input end of the serial communication receiving circuit 121 is connected to the line 41 in the twisted pair bus 4, and the output end is connected to the receiving interface RX1 of the logic control module 3; the serial port communication transmission circuit 122 has an input terminal connected to the transmission interface TX1 of the logic control module 3, and an output terminal connected to the line 42 in the twisted pair bus 4.
Similar to the structure of the communication channel 12, the communication channel 22 of the second interface module 2 also includes a serial communication receiving circuit 221 and a serial communication transmitting circuit 222, the input end of the serial communication receiving circuit 221 is connected to the line 42 in the twisted pair bus 4, and the output end is connected to the receiving interface RX2 of the logic control module 3; the serial communication transmission circuit 222 has an input terminal connected to the transmission interface TX2 of the logic control module 3, and an output terminal connected to the line 41 in the twisted pair bus 4. As can be seen from the above, the only difference between the communication channel 22 and the communication channel 12 is that the receiving interface and the transmitting interface are connected to the twisted pair bus in the opposite way, and the reason for this is further explained in the following embodiments.
In this embodiment, the data flow direction of the data of the adjacent racks in the network transmission device of the hydraulic support controller of the present application is as follows: entering from the line 41 of the twisted pair bus 4, transmitting along the serial communication receiving circuit 121, the logic control module 3 and the serial communication transmitting circuit 222, and finally flowing into the bus 41 again; or enters from the line 42 of the twisted pair bus 4, is transmitted along the serial communication receiving circuit 221, the logic control module 3, and the serial communication transmitting circuit 122, and finally flows into the bus 42 again.
Further, in the present embodiment, the serial communication receiving circuit 121 and the serial communication receiving circuit 221 are configured by an operational amplifier or a comparator. One port of the operational amplifier comparator is a fixed reference voltage (not more than 1V), and the adjacent frame sending signal is compared with the reference voltage through the operational amplifier or the comparator to complete the receiving of the high and low levels of the signal.
In this embodiment, the serial communication transmitting circuit 122 and the serial communication transmitting circuit 222 are formed by an inverter chip or a buffer chip. Serial signals of a serial communication sending interface TX1 and a serial communication sending interface TX2 of the logic control unit 3 pass through a serial communication sending circuit, the capacity of carrying capacity of sending signals is enhanced, the serial communication sending circuit is suitable for inter-rack bus transmission, and the baud rate configuration of the serial communication sending interface TX2 can be flexibly adjusted according to the length of a field cable.
Through the above embodiments, the present application provides a detailed description of the network transmission device of the hydraulic support controller disposed on a single hydraulic support. How the multiple hydraulic pressures are linked by the network transmission device of the hydraulic support controller is illustrated by the following embodiments.
In a second aspect, the present application provides a network transmission system of a hydraulic mount controller, comprising: a plurality of the network transmission devices of any one of the hydraulic support controllers provided herein, and an inter-bay communications bus for connecting different interface modules of the network transmission devices of adjacent hydraulic support controllers. The network transmission devices of the hydraulic support controllers are respectively arranged on different hydraulic supports. The inter-frame communication buses are twisted-pair buses, and the inter-frame communication buses are respectively connected with the twisted-pair buses at the corresponding ends of the network transmission devices of the adjacent hydraulic support controllers. The inter-frame communication buses are connected in a twisted pair mode, the requirement of differential transmission is met, and the common-mode interference resistance of signals is improved.
A schematic diagram of the network transmission devices of two adjacent hydraulic support controllers connected by an inter-frame communication bus is shown in fig. 4, and fig. 4 shows only a part, but not all, of the network transmission system of the hydraulic support controller of the present application. In practical applications, the number of the network transmission devices of the hydraulic support controller included in the network transmission system of the hydraulic support controller may be determined according to requirements, which is not limited in the present application.
As can be seen from fig. 4, the second interface module 2 of the network transmission device a1 of the hydraulic support controller on the left is connected to the first interface module 1 of the network transmission device a2 of the hydraulic support controller on the right via an inter-rack communication bus B.
In such a connection mode, when data flow is transmitted from the network transmission device a1 of the hydraulic support controller to the network transmission device a2 of the hydraulic support controller, the common data is converted to the physical interface transceiver circuit 213 of the second interface module 2 in the network transmission device a1 of the hydraulic support controller through the physical interface transceiver circuit 113 and the logic control module 3 of the first interface module 1 in the network transmission device a1 of the hydraulic support controller, the physical interface transceiver circuit 213 enters the twisted pair bus 4 (inter-rack communication bus B) through the high pass filter circuit 211 connected with the physical interface transceiver circuit 213, and enters the physical interface transceiver circuit 113 of the first interface module 1 together with the high pass filter circuit 111 of the first interface module 1 of the network transmission device a2 of the hydraulic support controller, so that the common data is transmitted.
When data flow is transmitted from the network transmission device a2 of the hydraulic bracket controller to the network transmission device a1 of the hydraulic bracket controller, common data are converted to the physical interface transceiver circuit 113 of the first interface module 1 in the network transmission device a2 of the hydraulic bracket controller through the physical interface transceiver circuit 213 of the second interface module 2 in the network transmission device a2 of the hydraulic bracket controller and the logic control module 3, the physical interface transceiver circuit 113 enters the twisted pair bus 4 through the high-pass filter circuit 111 connected with the physical interface transceiver circuit 113, and enters the physical interface transceiver circuit 213 of the second interface module 1 together with the high-pass filter circuit 211 of the second interface module 2 of the network transmission device a1 of the hydraulic bracket controller, so that transmission of the common data is realized.
When data flow is transmitted from the network transmission device a1 of the hydraulic bracket controller to the network transmission device a2 of the hydraulic bracket controller, the data of the adjacent rack is converted to the serial communication sending circuit 222 of the second interface module 2 in the network transmission device a1 of the hydraulic bracket controller through the serial communication receiving circuit 121 and the logic control module 3 of the first interface module 1 in the network transmission device a1 of the hydraulic bracket controller, then enters the wire 41 in the twisted-pair bus 4, and is transmitted to the serial communication receiving circuit 121 of the first interface module 1 in the network transmission device a2 of the hydraulic bracket controller, so that the transmission of the data of the adjacent rack is realized.
When data flow is transmitted from the network transmission device A2 of the hydraulic support controller to the network transmission device A1 of the hydraulic support controller, the data of the adjacent rack is converted to the serial communication sending circuit 122 of the first interface module 1 in the network transmission device A2 of the hydraulic support controller through the serial communication receiving circuit 221 of the second interface module 2 in the network transmission device A2 of the hydraulic support controller and the logic control module 3, then enters the wire 42 in the twisted-pair bus 4 and is transmitted to the serial communication receiving circuit 221 of the second interface module 2 of the network transmission device A1 of the hydraulic support controller, and transmission of the data of the adjacent rack is achieved.
In one embodiment, the network transmission system of the hydraulic support controller further comprises at least one coupler disposed between the network transmission devices of adjacent hydraulic support controllers. In the network transmission system of the hydraulic support controllers of fig. 5, a plurality of network transmission devices a98, a99, a100, a101, a102 and a103 of the hydraulic support controllers are shown, wherein a coupler 5 is shown between the network transmission device a100 of the hydraulic support controller and the network transmission device a101 of the hydraulic support controller, and both ends of the coupler 5 are respectively connected to the inter-support communication bus.
The coupler 5 comprises two isolation units connected in series with the lines 41 and 42 in the twisted pair bus 4, respectively. One of the isolation units is formed by connecting a digital isolation chip 511 and a high-pass filter capacitor 512 in parallel, and the other isolation unit is formed by connecting a digital isolation chip 521 and a high-pass filter capacitor 522 in parallel. The digital isolation chip 511 and the digital isolation chip 521 can be magnetic isolation chips or capacitance isolation chips commonly found in the market, so that the electrical isolation of the serial port data of adjacent racks is realized, and each coupler is provided with 2 digital isolation chips to complete the bidirectional transmission of the data. And a coupler is added between each hydraulic support, so that the electrical isolation of network bus data can be realized.
The network transmission device of the hydraulic support controller and the public bus communication of the system adopt a twisted-pair Ethernet technology, digital serial port signals are superposed on a bus communication channel, two-path redundant communication is achieved, the number of cables between frames is not increased, complexity of the system is simplified, system cost and power consumption are reduced, and the transmission network bus meets the intrinsic safety design requirement of a fully-mechanized mining face.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the specification.
In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. The above description is only an example of the embodiments of the present disclosure, and is not intended to limit the embodiments of the present disclosure. Various modifications and variations to the embodiments described herein will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present specification should be included in the scope of the claims of the embodiments of the present specification.
Claims (11)
1. A network transmission device for a hydraulic mount controller, comprising: the device comprises a first interface module, a second interface module and a logic control module for connecting the first interface module and the second interface module;
the first interface module and the second interface module respectively comprise a first communication channel for transmitting common data and a second communication channel for transmitting adjacent rack data;
one end of the first communication channel is connected with the logic control module, and the other end of the first communication channel is connected to a twisted pair bus; the first communication channel includes a high pass filter circuit and a physical interface transceiver circuit;
one end of the second communication channel is connected with the logic control module, and the other end of the second communication channel is connected to the twisted pair bus; the second communication channel comprises a low-frequency serial port communication module;
the public data is transmitted through a first communication channel of a first interface module, the logic control module and a first communication channel of a second interface module; and the adjacent data is transmitted through a second communication channel of the first interface module, the logic control module and a second communication channel of the second interface module.
2. The hydraulic mount controller network transmission of claim 1, wherein the first communication channel includes a high pass filter circuit, a low pass filter circuit, and a physical interface transceiver circuit;
the high-pass filter circuit comprises a first high-pass filter and a second high-pass filter, wherein one end of the first high-pass filter is connected to a first line of the twisted pair bus, and the other end of the first high-pass filter is connected with a first interface of the physical interface transceiver circuit; one end of the second high-pass filter is connected to a second line of the twisted pair bus, and the other end of the second high-pass filter is connected with a second interface of the physical interface transceiver circuit;
one end of the low-pass filter circuit is connected to the first interface, and the other end of the low-pass filter circuit is connected to the second interface;
the physical interface transceiver circuit is further connected with the logic control module through a third interface, and the physical interface transceiver circuit comprises a two-core Ethernet physical layer transceiver.
3. A network transmission arrangement of a hydraulic support controller according to claim 2, characterised in that the low pass filter circuit consists of an RLC circuit or an RC circuit.
4. The network transmission of a hydraulic mount controller of claim 2, wherein the first high pass filter and the second high pass filter of the high pass filter circuit are each comprised of two isolation capacitors.
5. The network transmission device of hydraulic support controller according to claim 1, wherein the second communication channel of the first interface module comprises a first serial communication receiving circuit and a first serial communication transmitting circuit, the input end of the first serial communication receiving circuit is connected to the first line of the twisted pair bus, and the output end of the first serial communication receiving circuit is connected to the first receiving interface of the logic control module; the input end of the first serial port communication transmission circuit is connected to the first transmission interface of the logic control module, and the output end of the first serial port communication transmission circuit is connected to the second wire of the twisted pair bus;
the second communication channel of the second interface module comprises a second serial port communication receiving circuit and a second serial port communication sending circuit, the input end of the second serial port communication receiving circuit is connected to the second wire of the twisted pair bus, and the output end of the second serial port communication receiving circuit is connected to the second receiving interface of the logic control module; the input end of the second serial port communication sending circuit is connected to a second sending interface of the logic control module, and the output end of the second serial port communication sending circuit is connected to a first wire of the twisted pair bus;
and the adjacent shelf data are transmitted through the first serial port communication receiving circuit, the logic control module and the second serial port communication sending circuit, or transmitted through the second serial port communication receiving circuit, the logic control module and the first serial port communication sending circuit.
6. The network transmission device of the hydraulic support controller according to claim 5, wherein the first serial communication receiving circuit and the second serial communication receiving circuit are composed of an operational amplifier or a comparator.
7. The network transmission device of a hydraulic support controller according to claim 5, wherein the first serial communication transmission circuit and the second serial communication transmission circuit are constituted by an inverter chip or a buffer chip.
8. The network transmission device of a hydraulic support controller according to any one of claims 1 to 7, wherein the logic control module is a switch chip or a programmable logic controller chip.
9. A network transmission system of a hydraulic mount controller, comprising: a network transmission means of a plurality of hydraulic support controllers according to any one of claims 1-8, and an inter-rack communications bus for connecting different interface modules of network transmission means of adjacent hydraulic support controllers;
the inter-frame communication bus is a twisted pair bus, and the inter-frame communication bus is respectively connected with the twisted pair bus at the corresponding end of the network transmission device of the adjacent hydraulic support controller.
10. The hydraulic mount controller network transmission system of claim 9, further comprising at least one coupler disposed between network transmission devices of adjacent hydraulic mount controllers.
11. The network transmission system of hydraulic support controllers of claim 10, wherein the coupler comprises two isolation units, the isolation units are composed of digital isolation chips connected in parallel with high-pass filter capacitors, and each isolation unit is connected in series with a different one of the inter-rack communication buses.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020032004A1 (en) * | 2000-05-09 | 2002-03-14 | Bernard Widrow | Simultaneous two-way transmission of information signals in the same frequency band |
| CN109162745A (en) * | 2018-11-05 | 2019-01-08 | 郑州煤机液压电控有限公司 | The means of communication of hydraulic support electrohydraulic control system |
| CN109194557A (en) * | 2018-11-05 | 2019-01-11 | 郑州煤机液压电控有限公司 | The two lane distance transmission systems based on VDSL |
| WO2019012227A1 (en) * | 2017-07-11 | 2019-01-17 | Safran Electrical & Power | Transmission and reception of an ofdm signal on an electrical two-wire transmission channel of an aircraft |
| US20210133133A1 (en) * | 2019-10-31 | 2021-05-06 | Sigmasense, Llc. | Low voltage drive circuit operable to convey data via a bus |
| CN114143154A (en) * | 2022-02-07 | 2022-03-04 | 北京大学 | OFDM modulation-based single-twisted-pair Ethernet transmission system and method |
| CN114310841A (en) * | 2022-02-15 | 2022-04-12 | 西安华创马科智能控制系统有限公司 | Inspection robot track unit, track system and inspection method |
-
2022
- 2022-05-11 CN CN202210509270.XA patent/CN115037567B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020032004A1 (en) * | 2000-05-09 | 2002-03-14 | Bernard Widrow | Simultaneous two-way transmission of information signals in the same frequency band |
| WO2019012227A1 (en) * | 2017-07-11 | 2019-01-17 | Safran Electrical & Power | Transmission and reception of an ofdm signal on an electrical two-wire transmission channel of an aircraft |
| CN109162745A (en) * | 2018-11-05 | 2019-01-08 | 郑州煤机液压电控有限公司 | The means of communication of hydraulic support electrohydraulic control system |
| CN109194557A (en) * | 2018-11-05 | 2019-01-11 | 郑州煤机液压电控有限公司 | The two lane distance transmission systems based on VDSL |
| US20210133133A1 (en) * | 2019-10-31 | 2021-05-06 | Sigmasense, Llc. | Low voltage drive circuit operable to convey data via a bus |
| CN114143154A (en) * | 2022-02-07 | 2022-03-04 | 北京大学 | OFDM modulation-based single-twisted-pair Ethernet transmission system and method |
| CN114310841A (en) * | 2022-02-15 | 2022-04-12 | 西安华创马科智能控制系统有限公司 | Inspection robot track unit, track system and inspection method |
Non-Patent Citations (4)
| Title |
|---|
| "Experimental design to reduce inductive coupling in spectral electrical impedance tomography (sEIT) measurements", GEOPHYSICAL JOURNAL INTERNATIONAL, vol. 225, no. 1 * |
| YONUK CHONG;WOON SONG;MUSHTAQ REHMAN ;SANG-WAN RYU: "Transmission Properties of Cryogenic Twisted Pair Filters", JOURNAL OF THE KOREAN PHYSICAL SOCIETY * |
| 王海荣;郝立果;: "基于PLC的煤矿液压支架远程监控系统设计", 煤矿机械, no. 08 * |
| 黄自莹;吴建国;章智敏;: "基于冗余CAN总线的船用阀门嵌入式控制系统", 仪表技术, no. 10 * |
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