CN212250153U

CN212250153U - Mine ventilation system monitoring device

Info

Publication number: CN212250153U
Application number: CN202021014589.8U
Authority: CN
Inventors: 蔡承言; 陈怀忠
Original assignee: Zhejiang Industry Polytechnic College
Current assignee: Zhejiang Industry Polytechnic College
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-12-29
Anticipated expiration: 2030-06-05

Abstract

A monitoring device for a mine ventilation system belongs to the technical field of mine ventilation. The utility model discloses a host computer, the CAN bus that has a plurality of intelligent network control nodes and CAN adapter card, each intelligent network control node of CAN bus connection forms LAN, and the host computer passes through CAN adapter card and links to each other with the CAN bus, all is connected with signal of telecommunication sensor on every intelligent network control node, is connected with GPRS system and printer on the host computer, and GPRS headtotail maintenance personal's cell-phone management. The utility model discloses a CAN bus control technique CAN carry out parameter acquisition and control to a plurality of mine ventilation control nodes simultaneously, utilizes intelligent network monitoring node to feed back to host computer real-time data, in time knows each mine ventilation control node parameter operation information to through looking over and looking over historical data, realize mine ventilation control node optimal control.

Description

Mine ventilation system monitoring device

Technical Field

The utility model belongs to the technical field of mine ventilation system, specifically relate to a mine ventilation system monitoring device.

Background

Mine ventilation systems are an important part of mine safety production. A stable, safe, intelligent and reliable mine ventilation system is an important and necessary condition for ensuring safe and stable production of mines. At present, the communication monitoring network of many mine ventilation monitoring systems in China still adopts an RS485 bus communication form mostly. This form of communication has major disadvantages: the longest transmission distance of the RS485 bus communication form is only 600m under the condition of no relay and high speed; the communication distance is short, the communication speed is low, and the efficiency is low; the RS485 bus communication mode can only support 32 nodes at most, and the control scale is small. There are other disadvantages, such as data not being well shared, centralized, and remotely controlled. Meanwhile, the RS485 bus only specifies a physical layer, a data link layer is not designed, and if one node is wrong, the whole bus system is paralyzed. RS485 can only form a master-slave structure, and the communication mode can only be carried out in a master station polling mode, so that the reliability and the real-time performance of the system are reduced.

Along with the improvement of the automation and mechanization level of mine production, the yield is continuously increased, the mine is required to be continuously deepened, the length of a mine ventilation roadway is increased, and the number of monitored ventilation nodes is continuously increased. The monitoring distance of the ventilation system is required to be more than kilometer, the number of nodes of the controlled ventilation system is sometimes required to be more than hundred, and meanwhile, in order to meet the requirements of automation and informatization development of mine production, the ventilation monitoring system is required to realize functions of sharing, centralization, remote control and the like. The mine ventilation monitoring system is required to have the remote, high-speed and multi-node monitoring and control capability, and simultaneously have good centralized and decentralized control capability and remote control capability.

The CAN bus (Controller Area Network) is a serial communication protocol of ISO international standardization, is in a multi-bus form, has point-to-point and point-to-multipoint functions, has the farthest communication distance of 10Km, and has more than 100 control nodes. The CAN bus has a reliable error processing and detecting mechanism, when a certain monitoring node has an error, the CAN controller automatically closes the node, and the influence on the whole monitoring system is weak. In the monitoring system, the CAN bus has the advantages of more holding monitoring nodes, high communication success rate, high communication speed, long transmission distance, multi-master transmission mode, low maintenance cost and the like, overcomes the defects caused by RS485 bus communication, improves the performance of the system, simplifies the structure, improves the production efficiency and the intelligent level, and is more suitable for the design requirements of the mine ventilation monitoring system.

Based on this, there is a need for improvements in the prior art, and the present case arises therefrom.

Disclosure of Invention

The utility model discloses solve the technical problem that above-mentioned prior art exists, provide a mine ventilation system monitoring device.

The above technical problem of the present invention can be solved by the following technical solutions: a monitoring device of a mine ventilation system comprises an upper computer, a CAN bus with a plurality of intelligent network monitoring nodes and a CAN adapter card, the CAN bus is connected with each intelligent network monitoring node to form a local area network, the upper computer is connected with the CAN bus through a CAN adapter card, each intelligent network monitoring node is connected with an electric signal sensor, the electric signal sensor is used for collecting wind speed, wind temperature and fan bearing temperature signals of the cross section of a ventilation roadway of the mine ventilation monitoring node, the upper computer is connected with a GPRS system and a printer, the GPRS system is connected with the mobile phone management of maintenance personnel, the intelligent network monitoring node comprises a main controller, a CAN communication controller and a CAN transceiver, the electric signal sensor is connected with a main controller, and the main controller is connected with a CAN bus through a CAN communication controller and a CAN transceiver in sequence.

Preferably, the main controller is also connected with a key, a watchdog, an LCD display and an audible and visual alarm.

Preferably, a photoelectric isolator is connected between the CAN communication controller and the CAN transceiver.

Preferably, the electric signal sensor comprises a wind speed sensor, a wind temperature sensor and a fan bearing temperature sensor, and the wind speed sensor, the wind temperature sensor and the fan bearing temperature sensor are all connected with the main controller.

The utility model discloses beneficial effect who has: the utility model discloses a CAN bus control technique CAN carry out parameter acquisition and control to a plurality of mine ventilation control nodes simultaneously, utilizes intelligent network monitoring node to feed back to host computer real-time data, in time knows each mine ventilation control node parameter operation information to through looking over and looking over historical data, realize mine ventilation control node optimal control. The utility model discloses can concentrate and the remote control management to a plurality of mine ventilation control nodes, realize data sharing, make mine ventilation system safer, intelligent, improve mine ventilation system's reliability, intellectuality and information-based management level.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the intelligent network monitoring node of the present invention.

In the figure: 1. an upper computer; 2. an intelligent network monitoring node; 3. a CAN bus; 4. a CAN adapter card; 5. a GPRS system; 6. a printer; 7. managing the mobile phone; 8. a main controller; 9. a CAN communication controller; 10. a CAN transceiver; 11. pressing a key; 12. a watchdog; 13. an LCD display; 14. an audible and visual alarm; 15. a photoelectric isolator; 16. a wind speed sensor; 17. a wind temperature sensor; 18. fan bearing temperature sensor.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): a monitoring device of a mine ventilation system is shown in figure 1 and comprises an upper computer 1, a CAN bus 3 with a plurality of intelligent network monitoring nodes 2 and a CAN adapter card 4, wherein the number of the intelligent network monitoring nodes 2 CAN be increased, decreased and adjusted according to the scale of the mine ventilation monitoring nodes, the CAN bus 3 is used as a communication network, the intelligent network monitoring nodes 2 are connected into a distributed local area network, and centralized monitoring is carried out through the upper computer 1. The upper computer 1 is connected with a CAN adapter card 4 and is connected with a CAN bus 3 through the CAN adapter card 4, each intelligent network monitoring node 2 is connected with an electric signal sensor, and the electric signal sensors are used for collecting wind speed, wind temperature and fan bearing temperature signals of the cross section of a ventilation roadway of the mine ventilation monitoring node. The upper computer 1 is connected with a printer 6, and the printer 6 is matched with the upper computer 1, so that the monitoring data of the whole mine ventilation system can be printed and monitored and managed on site. Still be connected with GPRS system 5 on the host computer 1, GPRS system 5 is connected with maintenance personal's cell-phone management 7, can send maintenance personal's cell-phone management 7 with mine ventilation system operational data and monitoring information through GPRS system 5, and the maintenance personal remote monitoring management of being convenient for.

The intelligent network monitoring nodes 2 are arranged in a plurality and are distributed in the whole mine ventilation system. As shown in fig. 2, the intelligent network monitoring node 2 includes a main controller 8, a CAN communication controller 9 and a CAN transceiver 10, which are composed of a single chip microcomputer of AT89C52 type, the electric signal sensor is connected with the main controller 8, and the main controller 8 is connected with the CAN bus 3 sequentially through the CAN communication controller 9 and the CAN transceiver 10, so as to form a complete intelligent network monitoring system. The main controller 8 is further connected with a key 11, a watchdog 12, an LCD display 13 and an audible and visual alarm 14, the key 11 is used for setting and calling parameters, the LCD display 13 is used for parameter display and field data monitoring, the watchdog 12 is used for system self-checking to ensure normal work of the system, and the audible and visual alarm 14 is used for performing audible and visual alarm under the conditions that the field wind speed, the wind temperature and the fan bearing temperature parameters of the mine ventilation system are out of limit or the system is abnormal.

The electric signal sensor comprises an air speed sensor 16, an air temperature sensor 17 and a fan bearing temperature sensor 18, the air speed sensor 16, the air temperature sensor 17 and the fan bearing temperature sensor 18 are all connected with the main controller 8, and the main controller 8 monitors data by using parameters acquired by the sensors.

In order to improve the anti-interference capability of the system, a photoelectric isolator 15 is additionally arranged between the CAN communication controller 9 and the CAN transceiver 10. Photoelectric isolation CAN be achieved between the CAN communication controller 9 and a transmission medium through the photoelectric isolator 15, and therefore the anti-interference capacity of the system is effectively improved.

The upper computer 1 is connected with the CAN bus 3 through the CAN adapter card 4 for information exchange. The intelligent network monitoring node 2 receives various operation control commands and setting parameters of the upper computer 1 through the CAN bus 3. The wind speed, the wind temperature and the fan bearing temperature signal change conditions of the cross section of the ventilation roadway of the mine ventilation monitoring node are collected in real time through the wind speed sensor 16, the wind temperature sensor 17 and the fan bearing temperature sensor 18. The intelligent network monitoring node 2 can transmit various parameters with the upper computer 1 and other intelligent network monitoring nodes 2 and receive commands and data from the upper computer 1, and the upper computer 1 mainly carries out centralized data processing and management.

The working principle of the intelligent network monitoring node 2 is as follows: when the ventilation system monitoring node information is transmitted, the main controller 8 accesses a 24-bit temporary storage inside the CAN communication controller 9 through the SPI interface, and signals are transmitted to the upper computer 1 through the CAN transceiver 10 after being subjected to photoelectric isolation through the photoelectric isolator 15. When the intelligent network monitoring node 2 receives the signal of the upper computer 1, the upper computer 1 transmits the control signal to the CAN bus 3, the CAN transceiver 10 receives the signal, the signal is transmitted to the CAN communication controller 9 after being isolated by the photoelectric isolator 15 through the photoelectricity, the main controller 8 accesses the 24-bit temporary storage inside the CAN communication controller 9 through the SPI interface and receives the control signal of the upper computer 1, and therefore, the monitoring of the monitoring node of the ventilation system CAN be achieved in two directions.

Mine operators and managers carry out on-site monitoring and scheduling on the operation conditions of the mine ventilation monitoring node parameters through the upper computer 1. The equipment maintenance personnel can send system alarm short messages to mobile phone management 7 of related maintenance personnel through the GPRS system 5 to realize remote monitoring of the ventilation system, and the related maintenance personnel can know whether related parameters such as temperature, wind speed and fan bearing temperature of the mine ventilation system operate normally or not at the first time by setting certain alarm conditions for processing, and if the related parameters are in an abnormal state, the related maintenance personnel can maintain the mine ventilation system at the first time conveniently, so that problems can be processed in time.

To sum up, the utility model discloses a CAN bus control technique CAN carry out parameter acquisition and control to a plurality of mine ventilation control nodes simultaneously, utilizes intelligent network monitoring node to feed back to host computer real-time data, in time knows each mine ventilation control node parameter operation information to through looking over and looking over historical data, realize mine ventilation control node optimal control. The utility model discloses can concentrate and the remote control management to a plurality of mine ventilation control nodes, realize data sharing, make mine ventilation system safer, intelligent, improve mine ventilation system's reliability, intellectuality and information-based management level.

Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above-described embodiments, and many modifications are possible. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should be considered as belonging to the protection scope of the present invention.

Claims

1. A monitoring device of a mine ventilation system is characterized by comprising an upper computer, a CAN bus with a plurality of intelligent network monitoring nodes and a CAN adapter card, the CAN bus is connected with each intelligent network monitoring node to form a local area network, the upper computer is connected with the CAN bus through a CAN adapter card, each intelligent network monitoring node is connected with an electric signal sensor, the electric signal sensor is used for collecting wind speed, wind temperature and fan bearing temperature signals of the cross section of a ventilation roadway of the mine ventilation monitoring node, the upper computer is connected with a GPRS system and a printer, the GPRS system is connected with the mobile phone management of maintenance personnel, the intelligent network monitoring node comprises a main controller, a CAN communication controller and a CAN transceiver, the electric signal sensor is connected with a main controller, and the main controller is connected with a CAN bus through a CAN communication controller and a CAN transceiver in sequence.

2. The mine ventilation system monitoring device of claim 1, wherein said master controller is further connected to a button, a watchdog, an LCD display and an audible and visual alarm.

3. The mine ventilation system monitoring device of claim 1, wherein a photo isolator is connected between the CAN communication controller and the CAN transceiver.

4. The mine ventilation system monitoring device of claim 1, wherein the electrical signal sensor comprises a wind speed sensor, a wind temperature sensor, and a fan bearing temperature sensor, the wind speed sensor, the wind temperature sensor, and the fan bearing temperature sensor are all connected to the master controller.