PATENT CLAIM ANALYSIS

Application Number: 15869944
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["299", "001300"]

Abstract:
A method for implementing a centralized control platform of a hydraulic support on a fully mechanized mining working face in underground coal mines, which is used for safety production in the underground coal mines. A Siemens PLC S7-300, a C8051F020 single chip microcomputer, a PowerBuilder tool, an SQLServer database and a multi-protocol communication platform are selected to form the centralized control platform, wherein the PowerBuilder tool is used as a front-end development platform; the Siemens PLC S7-300 and the C8051F020 single chip microcomputer are used as a real-time control platform; the PLC is connected to an electro-hydraulic control system, and a communication protocol thereof is a TCP/IP MODBUS protocol; the PLC acts as a client; the electro-hydraulic control system acts as a server end; an infrared transmission apparatus is mounted on a coal mining machine; a receiving apparatus is embedded into a support controller of the electro-hydraulic control system; and after receiving infrared information, the support controller transmits the information to an explosion-proof computer of the electro-hydraulic control system. The method may satisfy control functions required by an unattended or nearly unattended working face; can reliably complete various control functions based on operation of an adjacent support; can remotely transmit various pieces of information to a ground monitoring center in real time; and can monitor various failures in coal mining process in real time.

Claim (Index 1):
A method for implementing a centralized control platform of a hydraulic support on a fully mechanized mining working face in underground coal mines, involving 30 hydraulic supports for completing a centralized control function once, including one coal mining machine in-place hydraulic support, fourteen coal mining machine front hydraulic supports and fifteen coal mining machine rear hydraulic supports; the centralized control platform includes a Siemens PLC S7-300, a C8051F020 single chip microcomputer, a PowerBuilder tool and an SQLServer database; the PowerBuilder tool is used as a front-end development platform, the Siemens PLC S7-300 and the C8051F020 single chip microcomputer are used as a real-time control platform; wherein the Siemens PLC S7-300 is connected to the electro-hydraulic control system, a TCP/IP MODBUS protocol is functioned as a communication protocol between the Siemens PLC S7-300 and the electro-hydraulic control system is, the Siemens PLC S7-300 acts as a client, and the electro-hydraulic control system acts as a server end; an infrared transmission apparatus is mounted on the coal mining machine, a receiving apparatus is embedded into a support controller of the electro-hydraulic control system, the support controller receives infrared information from the infrared transmission apparatus and transmits the infrared information to an explosion-proof computer of the electro-hydraulic control system; the electro-hydraulic control system includes a support control system, an end centralized control system and a crossheading monitoring system, wherein the crossheading monitoring system is developed on the front-end development platform of the PowerBuilder tool, the end centralized control system and the support control system are developed by the C8051F020 single chip microcomputer, the crossheading monitoring system realizes TCP/IP protocol-based network communication by introducing Winsock by a PowerBuilder external matter OLE; the Siemens PLC S7-300 transmits the position of the coal mining machine to the explosion-proof computer of the electro-hydraulic control system in real time; specific operation steps are as follows:\n (1) When coal mining starts on the fully mechanized mining working face, the coal mining machine is at one end of the working face, the position of the coal mining machine is set to be an initial position; after it is confirmed that preparation work has been completed, the Siemens PLC S7-300 starts the coal mining machine: namely, firstly transmits a command of startup to the electro-hydraulic control system, and after obtaining a response that the electro-hydraulic control system has been prepared, the Siemens PLC S7-300 transmits a position signal of the coal mining machine and a process stage signal to the electro-hydraulic control system and at the same time starts the coal mining machine; (2) The electro-hydraulic control system sends out a centralized control command based on a position signal of the coal mining machine and a position detection signal of an encoder of the coal mining machine, such that the related hydraulic support automatically tracks the coal mining machine to carry out corresponding operation; (3) The explosion-proof computer of the crossheading monitoring system of the electro-hydraulic control system compares information of two detection positions of the coal mining machine, if the two positions are the same, the explosion-proof computer transmits normal information, and the centralized control platform continues to implement next control; if the two positions are different, the explosion-proof computer transmits alarm information such that the centralized control platform stops giving a centralized control command; information of the two detection positions of the coal mining machine refers to a position signal of the coal mining machine transmitted from the Siemens PLC S7-300 and a position signal of the coal mining machine transmitted from the infrared transmission apparatus; (4) After the coal mining machine is started normally, the Siemens PLC S7-300 transmits the number of the current process stage and the position detection signal of the encoder of the coal mining machine to the electro-hydraulic control system every 0.5 s; after receiving the signal from the Siemens PLC S7-300, the electro-hydraulic control system, as a response, provides information including front pillar pressure, rear pillar pressure, displacement stroke and a first state variable of the coal mining machine in-place hydraulic support, the coal mining machine front hydraulic supports and the coal mining machine rear hydraulic supports, wherein the first state variable includes whether the hydraulic support is normal or not, whether the support controller is normal or not, whether the end controller is normal or not and whether communication is normal or not, so that the centralized control platform makes judgment whether centralized control can be continued or not; (5) When the electro-hydraulic control system controls an operation of the hydraulic support based on the number of process stage and the coal mining machine position signal that are transmitted by the centralized control platform, the electro-hydraulic control system judges anytime whether physical variables related to the operation e.g., the pillar pressure, reach limit parameters or not, judges whether or not, e.g., a displacement stroke, is still not in place after the given operation limit time has passed, and judges whether control information and return information form a closed loop or not; and judges whether communication is smooth or not; (6) The centralized control platform transmits a write request of the number of process stage and the coal mining machine position to the electro-hydraulic control system, and at the same time transmits a read request for collecting signals of the electro-hydraulic control system in real time, after obtaining a request from the centralized control platform, the explosion-proof computer of the crossheading monitoring system of the electro-hydraulic control system firstly judges the type of the request and then executes corresponding process; (7) After the electro-hydraulic control system has received the read request from the centralized control platform, the explosion-proof computer of the crossheading monitoring system transmits data in the read request in the form of a TCP/IP MODBUS protocol to the centralized control platform; firstly transmits the first five numbers that are received; and secondly transmits (the number required by the client)*2+3 numbers; and thirdly transmits the 7th and the 8th numbers (i.e., device address and function code) that are received; and fourthly transmits (the number required by the client)*2 numbers; and fifthly transmits a head address where the data is saved; and next transmits data volume in sequence, and finally transmits a check code; (8) After receiving the data transmitted from the step (7), the centralized control platform performs analysis and judgment, and stops operation of the coal mining machine timely when there is a failure and gives an alarm at the same time.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 86.0
- Lexical Diversity: 2.30189
- Patent Class: 299.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15752361', '15558768', '16303143', '15319292', '12532783']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7059875725446125
- 35 USC 102 Novelty (BERT): 0.5158202633429004
- Combined Prediction Score: 0.6869708416244413
- Mean Citation Score: 209.882346
- Max Citation Score: 332.05304
- Similarity Product: 257.889175474844

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test