CN102848923A - Intrinsic safety type operation display for mining - Google Patents
Intrinsic safety type operation display for mining Download PDFInfo
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- CN102848923A CN102848923A CN2012103790188A CN201210379018A CN102848923A CN 102848923 A CN102848923 A CN 102848923A CN 2012103790188 A CN2012103790188 A CN 2012103790188A CN 201210379018 A CN201210379018 A CN 201210379018A CN 102848923 A CN102848923 A CN 102848923A
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- operation display
- explosion
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- proof
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Abstract
The invention provides an intrinsic safety type operation display for a mining vehicle. The operation display is designed to intrinsic safety type explosion prevention according to a national explosion-proof standard GB3836.4; and input energy of a power supply is limited and a main control circuit is reasonably designed, so that an explosion-proof technology for inhibiting sparkles on the circuit is provided. A press key is changed into a thin film switch from an explosion-proof metal press button, so that a heavy shell and the explosion-proof metal press button are saved and the material and machining costs are reduced; and more importantly, the weight of the whole vehicle is reduced, the journey continuation route of a storage battery electric vehicle is increased and the reliability of operation control is improved.
Description
Technical field
[0001] Mine-used I. S operation display of the present invention mainly is applicable to have damp (methane mixture, coal dust) place with other under the coal mine, and type of explosion proof construc tion is essential safe type.It has the function that car load information is shown and controls as the important auxiliary equipment of mine anti-explosion storage battery railless free-wheeled vehicle.This Mine-used I. S operation display comprises display instrument and guidance panel, instrument is used for showing in real time the parameters such as vehicle voltage, electric current, rotating speed, time, fault and accumulator capacity, and guidance panel is used for arranging the functions such as gear, information inquiry, control front and back car light and loudspeaker switching.
Background technology
At present, what the operation display of using on the explosion-proof battery electric locomotive of known coal mine operation adopted is that the flame proof pattern is explosion-proof, it need to design a shell, in order to reach requirement of explosion proof, this shell must be used the materials such as very thick steel plate or copper coin, and to add a very wide flange faying face between body and cap, button also must be made explosion separation structure, and explosion-proof criteria has strict requirement to gap and the roughness of faying face, this with the negative effect that brings is: 1, the difficult control of flame-proof type button precision, sometimes cause electric upper bad contact 2, the increase of steel plate thickness must increase the weight of the weight of whole car, finally affects course continuation mileage.3, the shell processing technology is proposed higher requirement, cost is incited somebody to action rising at double.
Summary of the invention
In order to overcome the defective of flame-proof type operation display, Mine-used I. S operation display of the present invention is designed to essential explosion-proofing safe according to national explosion-proof criteria GB3836.4, is by suppress a kind of explosion-proof technology of spark at circuit.Button makes thin-film switch into by flame-proof type metal button, heavy shell and flame proof metal button have not only been saved, reduce material and tooling cost, the more important thing is the weight that can alleviate car load, improve the course continuation mileage of battery locomotive and the reliability that improves operation control.
Description of drawings
Fig. 1 is the outside drawing of Mine-used I. S operation display of the present invention;
Fig. 2 is the constructional drawing of invention Mine-used I. S operation display;
Fig. 3 is the power circuit diagram of invention Mine-used I. S operation display;
Fig. 4 is the motherboard circuit figure of invention Mine-used I. S operation display.
The specific embodiment
Mine-used I. S operation display of the present invention is designed to essential safety-type according to national explosion-proof criteria GB3836.4, by choose the low components and parts that reach super low-power consumption of operating voltage at circuit, under the prerequisite that does not affect key property, reduce the energy-storage travelling wave tube on the circuit, easily produce the devices such as pyrophoric switch without relay and other as far as possible.Structurally do not use the colliery to forbid the light metal of usefulness, such as aluminium, be designed to all steel shell 1, and inner mainboard 2 and power supply circuit board 3 epoxy resin rubber seal.The spark that makes operation display still not produce spark or generation in normal operation and the situation that is out of order is not enough to ignite the extraneous explosion gaseous environment.Power unit, this operation display is by the vehicle-mounted intrinsic safety electric source 12V power supply through certification of explosion protection, the 12V input connects two series diode D1, D2, be used for anyway the sparking of electric capacity back discharge, the D2 negative pole connects three terminal regulator U1 (LM7808), the output of U1 the 3rd pin connects a wire fuse F1 and two shunt regulator tube D3, D4, the D4 negative pole connects LDO power supply IC U2 (SPX29300-5.0V), U2 output connects a wire fuse F2 and two shunt regulator tube D5, D6, and D6 negative pole output 5V voltage is supplied with motherboard circuit.
Operation and display part, this operation display is mainly finished control and the function that shows by motherboard circuit, motherboard circuit is mainly by MCU(STM32F103Z6T7), LCD controls IC(TW8816), button switch scans I C (ZLC7290), outside CAN communication interface IC (TJA1040) and corresponding power supply IC form, extraneous information is passed to CAN communication interface IC (TJA1040) by the CAN bus, this interface IC is defeated by main MCU after the CAN signal is changed into Transistor-Transistor Logic level, pass to LCD control IC(TW8816 after main MCU processes the signal of input), TW8816 shows corresponding image and Word message to control display screen display after the information processing again.When having button to press, press such as forward gear, key scan IC (ZLC7290) captures immediately this button and presses, then key value is issued main MCU(STM32F103Z6T7), main MCU makes corresponding estimation ﹠ disposing according to key value, then information is passed to CAN interface IC (TJA1040), the CAN signal of CAN interface IC (TJA1040) outputting standard is controlled other corresponding electrical equipment (such as frequency converter) on the car.
In addition, this operation display also can external intrinsic safety type camera, and the vision signal of camera output is connected to LCD control IC(TW8816), video image will be presented on the read-out when reversing, serve as back mirror and use.
It all is the low-power consumption components and parts that whole circuit adopts, and voltage and current is low, and energy-storage travelling wave tube is minimum on the circuit card, adds whole circuit card rubber seal, so that whole circuit meets the Sefe antiexplosion requirement, can pass through smoothly the intrinsic safe explosion-proof certification test.
Claims (3)
1. Mine-used I. S operation display; meet inbeing safe explosion prevention standard GB3836.4-2000, it is characterized in that by adopting stainless steel casing, select low voltage and low-power consumption components and parts, dual diode-isolated, dual stabilivolt voltage-limiting protection, reducing the generation that the technology such as circuit energy-storage travelling wave tube, circuit card rubber seal prevent spark.
2. Mine-used I. S operation display according to claim 1, it is characterized in that: connect two diodes after the power supply input, then be connected to a three-terminal voltage-stabilizing IC LM7808, string has a wire fuse and two stabilivolts in parallel after the voltage stabilizing output, then connect a LDO power supply IC SPX29300-5.0V, export to load supplying after connecting again a wire fuse and two diodes in parallel after the output.
3. Mine-used I. S operation display according to claim 1, it is characterized in that: external input information passes to CAN interface IC TJA1040 by the CAN bus, this IC is defeated by main MCU after the CAN signal is changed into Transistor-Transistor Logic level, after processing the signal of input, main MCU passes to LCD control IC(TW8816), TW8816 shows corresponding image and Word message to control display screen display after the information processing again, when having button to press, press such as the forward gear button, key scan IC (ZLC7290) captures immediately this button and presses, then key value is issued main MCU(STM32F103Z6T7), main MCU makes corresponding estimation ﹠ disposing according to key value, then information is passed to CAN interface IC (TJA1040), the CAN signal of CAN interface IC (TJA1040) outputting standard is controlled other corresponding electrical equipment (such as frequency converter) on the car by the CAN bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103790188A CN102848923A (en) | 2012-10-09 | 2012-10-09 | Intrinsic safety type operation display for mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103790188A CN102848923A (en) | 2012-10-09 | 2012-10-09 | Intrinsic safety type operation display for mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102848923A true CN102848923A (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103790188A Pending CN102848923A (en) | 2012-10-09 | 2012-10-09 | Intrinsic safety type operation display for mining |
Country Status (1)
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| CN (1) | CN102848923A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3812861A1 (en) * | 1988-04-18 | 1989-10-26 | Siemens Ag | Intrinsically safe current supply device |
| CN2105718U (en) * | 1991-12-11 | 1992-05-27 | 黄坡 | Wood safety power source |
| CN101741116A (en) * | 2009-11-25 | 2010-06-16 | 煤炭科学研究总院太原研究院 | Portable intrinsic safety power supply for coal mine |
-
2012
- 2012-10-09 CN CN2012103790188A patent/CN102848923A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3812861A1 (en) * | 1988-04-18 | 1989-10-26 | Siemens Ag | Intrinsically safe current supply device |
| CN2105718U (en) * | 1991-12-11 | 1992-05-27 | 黄坡 | Wood safety power source |
| CN101741116A (en) * | 2009-11-25 | 2010-06-16 | 煤炭科学研究总院太原研究院 | Portable intrinsic safety power supply for coal mine |
Non-Patent Citations (3)
| Title |
|---|
| 崔保春等: "提高本质安全开关电源功率及安全火花电路的研究", 《苏州科技学院学报》 * |
| 崔保春等: "矿用本质安全开关电源的研究", 《中国煤炭》 * |
| 张仲礼: "本质安全防爆电源设计技术", 《煤炭技术》 * |
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Application publication date: 20130102 |