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Data acquisition system under mine

A data acquisition system and data acquisition technology, applied in the direction of digital transmission system, transmission system, data exchange network, etc., can solve the problems of closed system, unsatisfactory real-time performance, and short transmission distance, so as to ensure the safety status, suppress interference, The effect of stable performance

Inactive Publication Date: 2009-03-11
WESTERN MINING CO LTD
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AI Technical Summary

Problems solved by technology

[0002] The information transmission of the traditional coal mine monitoring system widely adopts RS232 or RS485 communication mode. This transmission bus technology has many insurmountable shortcomings in information transmission, which are mainly manifested in: (1) Although there are many types of monitoring systems, they are mainly From the secondary structure, there can only be one master node on the network, which cannot form a multi-master redundant system. When the master node fails, the system will not be able to operate; (2) Due to the lack of unified specifications and communication protocols, the system is closed ; (3) The transmission rate is low, generally below 4800B / S, the transmission distance is short, and the real-time performance cannot be satisfied
(4) The accuracy of signal processing is not high, and the anti-interference ability of data on the transmission line is low

Method used

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  • Data acquisition system under mine
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Embodiment 1

[0026] The invention proposes a coal mine embedded data collection substation method based on the improved CAN bus, the whole system can effectively collect coal mine data, and has good stability and expansibility.

[0027] The coal mine embedded data acquisition substation collects the data of various monitoring modules in the mine and transmits it to the monitoring center on the mine in time, which provides an effective way for coal mine safety monitoring. The use of TCP / IP communication is conducive to the dynamic use of data acquisition substations; CAN communication ensures high-speed communication between data acquisition substations and underground nodes.

[0028] Classify the situation of each site according to the degree of security, and then generate corresponding identifiers according to the degree, and use the bit arbitration mechanism of the CAN bus to determine the transmission priority on the bus. In this way, the utilization rate of the bus can be improved more...

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Abstract

The invention relates to a mine monitoring technology, in particular to an underground mine data acquisition system based on an improved CAN bus. A data acquisition tributary station of the invention is connected with a general control center by adopting TCP / IP communication and connected with an underground monitoring module by a CAN interface. The invention has the advantages that the CAN field bus technology is adopted by the invention so as to ensure that a coal mine monitoring system becomes open. The data acquisition tributary station and a monitoring center are communicated by TCP while the data acquisition tributary station is communicated with the underground monitoring module by CAN. An address arbitration mechanism of the CAN bus solves the problem of bus transmission confliction in each station. The underground mine data acquisition system has simple structure, simple and convenient operation, complete data acquisition as well as fast and accurate data transmission and resolution and is applicable to the coal mine monitoring system.

Description

technical field [0001] The invention relates to a mine monitoring technology, in particular to an underground data acquisition system based on an improved CAN bus. Background technique [0002] The information transmission of the traditional coal mine monitoring system widely adopts RS232 or RS485 communication mode. This transmission bus technology has many insurmountable shortcomings in information transmission, which are mainly manifested in: (1) Although there are many types of monitoring systems, they are mainly From the secondary structure, there can only be one master node on the network, and a multi-master redundant system cannot be formed. When the master node fails, the system will not be able to operate; (2) Due to the lack of unified specifications and communication protocols, the system is closed ; (3) The transmission rate is low, generally below 4800B / S, the transmission distance is short, and the real-time performance cannot be satisfied. (4) The precision o...

Claims

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Application Information

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IPC IPC(8): G05B19/048G05B19/418H04L12/56H04L12/40
CPCY02P90/02
Inventor 刘蕴络周贤伟杜帅汪林李亚濛呼欣王伟
Owner WESTERN MINING CO LTD
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