CN201654674U

CN201654674U - Downhole general computer for coal mine

Info

Publication number: CN201654674U
Application number: CN200920298947XU
Authority: CN
Inventors: 伍小杰; 于月森; 戴鹏; 左东升; 吴迪; 孙新贺; 王贵峰
Original assignee: XUZHOU BAODI ELECTRIC CO Ltd; China University of Mining and Technology CUMT
Current assignee: XUZHOU BAODI ELECTRIC CO Ltd; China University of Mining and Technology CUMT
Priority date: 2009-12-17
Filing date: 2009-12-17
Publication date: 2010-11-24
Anticipated expiration: 2019-12-17

Abstract

The utility model provides a downhole general computer for a coal mine, which is applicable to the underground work environment with explosive mixtures in the coal mine. The downhole general computer mainly comprises a host computer, a monitor, a keyboard and an interface circuit board, wherein the host computer comprises a core board, a communication board, a power board and an interface circuit. Provided with the intrinsic safety-type input interface and the intrinsic safety-type network interface, the downhole general computer has the advantages of compact and durable structure, wide working temperature range, low power consumption, low heating value, strong versatility, high operating speed, high reliability, relative-low price and good use effect; and can meet the requirement for the application in various severe conditions.

Description

Multi-purpose computer under the coal mine

Technical field

The utility model relates to a kind of multi-purpose computer, is particularly useful for the multi-purpose computer that uses under coal mine.

Background technology

Employed computing machine under the present coal mine, mostly be the flame-proof type computing machine greatly, it is the method that adopts sealing, whole computing machine is sealed in explosion-proof metal shell inside, even the internal electric element is struck sparks, cause internal explosion, because casing rigidity is very big, the explosive force that produces is by the housing block and extinguish, explosive flame passes less than in the external environment condition, thereby plays explosion-proof purpose, and the explosion-proof processing of this class computing machine is simple, can not satisfy the request for utilization under the mal-conditions such as humidity, dust, high gas under the picture coal mine, and weight is heavier.Also there are some Flameproof and intrinsically safe computing machines in the computing machine that uses under the coal mine at present, but its arithmetic speed is slow, and memory space is little, the electric interfaces that provides is also few, can not realize the electrical isolation of various interface, and cost an arm and a leg, can not satisfy the demand of current colliery downhole production.

Summary of the invention

The purpose of this utility model is the weak point that overcomes in the prior art, the down-hole multi-purpose computer that provides a kind of and have highly versatile, have the essential safe type interface, be convenient to operate.

Multi-purpose computer is mainly connected to form according to preferred circuit by main frame, display, keyboard and interface card under the utility model coal mine, main frame is made up of core board, communication board, power panel and interface circuit, and main frame, display, power panel are installed in the metal shell of a sealing.Core board connects with input circuit by two kinds of intrinsic safety interfaces, and the mouse border keyboard interface circuit of leading up to connects with the input port of intrinsic safety type interface isolator, and the delivery outlet of intrinsic safety type interface isolator is connected with the touch pad keyboard; Another road is that Ethernet interface is connected with the optical fiber change-over panel by safety barrier.

Hard disk that described computing machine connects is the wide temperature vibrationproof of a high capacity technical grade hard disk; Described intrinsic safety type interface isolator is the standard light electric isolating circuit.

Beneficial effect: universal explosion-suppression and intrinsic safety computer organization compactness of the present utility model is firm, operating temperature range is wide, realize low power dissipation design by selecting low-power consumption PC104 integrated circuit board for use.In addition, have the input interface and the network interface that meet the essential safe type standard, can satisfy various demands.It is fast that this scheme has travelling speed, the reliability height, and the characteristics of relative low price, and meet the explosion-suppression and intrinsic safety requirement, can satisfy the application under the various mal-conditions.

Description of drawings

Fig. 1 is multi-purpose computer connection mode figure under the utility model coal mine.

Fig. 2 is the schematic diagram of the utility model intrinsic safety type interface isolator.

Fig. 3 is a network diagram of the present utility model.

Among the figure: the 1-core board; The 2-communication board; The 3-power panel; 4-liquid crystal drive plate; 5-17 ' LCD; The 6-loudspeaker; The 71-safety barrier; 72-optical fiber change-over panel; 81, the shockproof hard disk of the wide temperature of 82-2.5 ' high capacity technical grade; 9-intrinsic safety type interface isolator; 10-touch pad keyboard; 11-electric current loop converter.

Embodiment

Below in conjunction with accompanying drawing an embodiment of the present utility model is described further:

As shown in the figure, multi-purpose computer is mainly connected to form according to preferred circuit by main frame, display 5, keyboard 10 and interface card under the utility model coal mine, main frame is made up of core board 1, communication board 2, power panel 3 and interface circuit, and main frame, display, power panel are installed in the metal shell of a sealing.Core board connects with input circuit by two kinds of intrinsic safety interfaces, and the mouse-keyboard interface circuit of leading up to connects with the input port of intrinsic safety type interface isolator 9, and the delivery outlet of intrinsic safety type interface isolator 9 is connected with touch pad keyboard 10; Another road is that Ethernet interface passes through safety barrier 71 and is connected with optical fiber change-over panel 72.Hard disk that computing machine connects is the wide temperature vibrationproof of a high capacity technical grade

hard disk

81,82.

By core board 1, communication board 2 and power panel 3 is main body, and liquid crystal drive plate 4,17 ' LCD 5, loudspeaker 6, safety barrier 71, optical fiber change-over panel 72, two the shockproof

hard disks

81,82 of the wide temperature of 2.5 ' high capacity technical grade, intrinsic safety type interface isolator 9, touch pad keyboard 10 and RS232 change electric current loop converter 11 and all are connected on above-mentioned three PC104 integrated circuit boards.

Core board 1, communication board 2 and power panel 3 are plugged on together by PC104 industrial computer bus as the main body of computing machine, realize exchanges data and power supply supply by bus.Core board 1 is in the superiors of computing machine, and top heat radiator 12 closely contacts with computing machine flameproof enclosure top plate, and smears heat conductive silica gel at surface of contact.Power panel is at the orlop of computing machine, and end heat radiator 13 closely contacts with the lower plywood of flameproof enclosure by heat conductive silica gel.Can effectively guarantee computer to dissipate heat like this, improve the stability of this patent.17 ' LCD 5 is connected with liquid crystal drive plate 4 by the LCD interface, provides power supply by power panel 3.Liquid crystal drive plate 4 is realized the signal transmission of core board 1 and 17 ' LCD 5.Loudspeaker 6 are fixed on the flameproof enclosure, and the sound card interface by signal wire connection core board 1 provides voice output.Optical fiber change-over panel 72 is connected by safety barrier 71 on the network interface of core board 1, realizes the conversion of computing machine Ethernet and optical fiber.Safety barrier 71 is used for the energy limited of network interface, makes network interface reach the intrinsic safety standard.Two shockproof

hard disks

81,82 of the wide temperature of 2.5 ' high capacity technical grade connect the hard-disk interface of core board 1 by data line, are used for store user data.During computer run, hard disk 81 is realized the operate as normal of computing machine as master, and hard disk 82 guarantees computing machine operate as normal under the situation of hard disk 81 faults as system redundancy, also can be used as data backup simultaneously.Touch pad keyboard 10 is connected by signal wire with the intrinsic safety type interface of core board 1, uses homemade interface isolator 9 to realize the electrical isolation of keyboard and mouse interface, and interface isolator 9 is by power panel 3 power supplies.Electric current loop converter 11 is connected on the serial ports of communication board 2, realizes the conversion of RS232 to electric current loop.

Figure 2 shows that wherein set of circuits of intrinsic safety type interface isolator.Isolator has identical two groups of circuit, isolates keyboard and mouse respectively.Isolation features is mainly realized by photoelectric isolating circuit.1 end of buffer circuit and 8 ends connect two groups of intrinsic safety electric sources respectively; 4 ends and 5 ends are for isolator; The DATA and the CLK of 2 ends, 3 termination keyboards or mouse; The DATA of 6 ends and 7 termination main frames and CLK.R1, R2, R3, R4 are build-out resistor among the figure, and C1, C2 are filter capacitor.

During work, need outside 110V～245V ac power supply, supply with miscellaneous part by power panel 3 conversion backs.Computing machine can pass through various intrinsic safety type electric interfaces and other device talks, realizes data transmission.The shockproof

hard disk

81,82 of the wide temperature of technical grade is used for storage operating system, necessary software etc.Touch pad keyboard 10 and 17 ' LCD 5 realize man-machine interaction.Use the stacking-type bus to connect between core board 1, communication board 2 and the power panel 3, can play fixation in the time of the transmission data.Modular design makes device simplification, seriation, standardization, has improved the reliability of system.

Fig. 3 is the application example as down-hole master's monitoring device.The CAN1 interface of computing machine and CAN2 interface each as the isolated node carry on the CAN bus, form communication network with the pressure monitoring unit that is installed on the hydraulic support column.CAN bus maximum node number is about 110, and is to adapt to actual demand, and maximum demand is realized nearly 300 hydraulic supports are monitored simultaneously.For this reason, install between per 5 to 8 nodes on the bus and isolate relaying, this equipment can play the effect of electrical isolation simultaneously.

During work, the monitoring means on every hydraulic support is gathered the data of fluid pressure in the column cavity of resorption in real time by being installed in the pressure transducer of column cavity of resorption, and gathers communication board 2 to the explosion-suppression and intrinsic safety computing machine by the CAN bus.After 2 pairs of data of communication board are carried out filtering and pre-service, be transferred to core board 1.Core board 1 is kept in the real-time data base of hard disk 81 after receiving data, simultaneously data is analyzed, is handled, and shows each support situation by 17 ' LCD 5.It is for future reference that data processed is saved to hard disk 81.At regular intervals, can be with the data backup of 81 li preservations of hard disk to hard disk 82.This patent can be realized the poppet pressure parameter monitoring by the software of prepackage, and unusual parameter is reported to the police, and shows functions such as error message in real time.Computing machine can also pass through intrinsic safety type communication interface and each pressure monitoring unit communications, and their duty is set.

Claims

1. multi-purpose computer under the coal mine, mainly by main frame, display (5), keyboard (10) and interface card connect to form according to preferred circuit, main frame is by core board (1), communication board (2), power panel (3) and interface circuit are formed, main frame, display, power panel is installed in the metal shell of a sealing, it is characterized in that: described core board (1) connects with input circuit by two kinds of intrinsic safety interfaces, the mouse-keyboard interface circuit of leading up to connects with the input port of intrinsic safety type interface isolator (9), and the delivery outlet of intrinsic safety type interface isolator (9) is connected with touch pad keyboard (10); Another road is that Ethernet interface passes through safety barrier (71) and is connected with optical fiber change-over panel (72).

2. multi-purpose computer under the coal mine according to claim 1 is characterized in that: hard disk that described computing machine connects is the wide temperature vibrationproof of a high capacity technical grade hard disk (81,82).

3. multi-purpose computer under the coal mine according to claim 1 is characterized in that: described intrinsic safety type interface isolator (9) is the standard light electric isolating circuit.