CN104507221A - Combined mining anti-explosion and intrinsic safety type tunnel lamp - Google Patents
Combined mining anti-explosion and intrinsic safety type tunnel lamp Download PDFInfo
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- CN104507221A CN104507221A CN201410780326.0A CN201410780326A CN104507221A CN 104507221 A CN104507221 A CN 104507221A CN 201410780326 A CN201410780326 A CN 201410780326A CN 104507221 A CN104507221 A CN 104507221A
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Abstract
The invention relates to an anti-explosion tunnel lamp mounted in a mining tunnel and specifically relates to a combined mining anti-explosion and intrinsic safety type tunnel lamp. The combined mining anti-explosion and intrinsic safety type tunnel lamp comprises an anti-explosion shell, wherein an LED (Light Emitting Diode) light source is arranged on the anti-explosion shell; a power supply controller and an LED light source driver are arranged in the anti-explosion shell; the LED light source driver comprises an input port P1, a first output port P2 and a driving chip U1 in KA7500B type; the input port P1 is connected with an output end of the power supply controller; the first output port P2 is connected with the LED light source through an overvoltage over-current locking protecting circuit. The invention provides the combined mining anti-explosion and intrinsic safety type tunnel lamp; a driving circuit mounted in the tunnel lamp has the functions of current feedback, voltage feedback and overvoltage over-current locking protection, so that the voltage and the current outputted by the driving circuit are constant; the tunnel lamp also can be used for supplying power to a surrounding personnel location system and a surrounding safety monitoring inspecting system, so that the technical demand of the mining tunnel on the tunnel lamp is met.
Description
Technical field
The present invention relates to the explosion-proof type tunnel lamp installed in coal mine roadway, be specially the explosion-proof intrinsically safe tunnel lamp of Combined mine.
Background technology
The tunnel lamp that colliery is installed in tunnel generally is explosion-proof type tunnel lamp, existing explosion-proof type tunnel lamp exists following not enough: the first, just tunnel lamp housing has carried out flame proof design, and tunnel lamp drive circuit does not adopt substantial safety-design, thus case material and processing request higher; The second, enclosure interior does not arrange power supply output, cannot be personnel location system and the Safety monitoring system power supply of periphery.
Summary of the invention
The present invention can not meet the problem of coal mine roadway to lighting apparatus technical requirement to solve existing explosion-proof type tunnel lamp, provides the explosion-proof intrinsically safe tunnel lamp of Combined mine.、
The present invention adopts following technical scheme to realize: the explosion-proof intrinsically safe tunnel lamp of Combined mine, comprise explosion-proof casing, explosion-proof casing is provided with LED light source, power-supply controller of electric and LED light source driver is provided with in explosion-proof casing, LED light source driver comprises input port P1, first output port P2 and model are KA7500B, inside is written with the driving chip U1 of voltage compare program, the 2nd pin ground connection of input port P1, 1st pin is by the 8th electric capacity C8 ground connection, 1st pin is also connected with the emitter of PNP triode Q3, the 30 resistance R30 is also connected with between the emitter of PNP triode Q3 and base stage, the collector electrode of PNP triode Q3 is connected with the negative pole of voltage-stabiliser tube ZD1, the plus earth of voltage-stabiliser tube ZD1, collector electrode is also connected with the 1st pin of the first output port P2 with the 32 resistance R32 by the inductance L 1 connected successively, the 2nd pin ground connection of the first output port P2, 1st pin of the first output port P2 is by the 9th electric capacity C9 ground connection, also by the 34 resistance R34 that connects successively and the 41 resistance R41 ground connection, 32 resistance R32 two ends are also parallel with the 33 resistance R33, 1st pin of driving chip U1 is by the 39 resistance R39 ground connection, also be connected between inductance L the 1 and the 32 resistance R32 by the 37 resistance R37, 2nd pin is connected with the 3rd pin by the 13 electric capacity C13, 2nd pin is connected with the 1st pin of the first output port P2 by the 38 resistance R38, the 40 resistance R40 also by connecting successively, 29 resistance R29 and the tenth electric capacity C10 ground connection, 3rd pin is connected with the 15th pin by the 12 electric capacity C12, 4th pin is by the 35 resistance R35 ground connection, 5th pin is by the 14 electric capacity C14 ground connection, 6th pin is by the 36 resistance R36 ground connection, 7th pin, 9th pin, 10th pin and the 13rd pin all ground connection, 8th pin is connected with the 11st pin, 11st pin is connected with the base stage of PNP triode Q3 by the 31 resistance R31, 12nd pin is connected with PNP triode Q3 emitter, 14th pin is connected between the 40 resistance R40 and the 29 resistance R29, 15th pin is connected between the 29 resistance R29 and the tenth electric capacity C10, 16th pin is by the 41 resistance R41 ground connection, also be connected with the 1st pin of the first output port P2 by the 34 resistance R34, the output of power-supply controller of electric is connected with the terminals of input port P1, and the terminals of the first output port P2 are connected with LED light source.
During work, the input of power-supply controller of electric is connected with external ac power source, external ac power source is converted to internal supply voltage by power-supply controller of electric, internal supply voltage is inputted by input port P1, first output port P2 output supply voltage is to LED light source, driving chip U1 can control internal circuit, the first output port P2 is made to export constant voltage/constant current, driving chip U1 comprises current feedback and Voltage Feedback, 1st pin of the positive pole of current feedback and the corresponding driving chip U1 of negative pole difference and the 2nd pin, the electric current that PNP triode Q3 collector electrode flows out flows through the 32 resistance R32 and the 33 resistance R33, 32 resistance R32 and the 33 resistance R33 produces voltage drop, this voltage drop is through the 37 resistance R37, 39 resistance R39 and the 38 R38, 40 resistance R40 feeds back to the 1st pin and the 2nd pin of driving chip U1, when the voltage of 1 pin is greater than the voltage of the 2nd pin, 8th pin of driving chip U1 and the 11st pin reduce output pulse width, the electric current that PNP triode Q3 collector electrode is flowed out reduces, when the voltage of 1 pin is less than the voltage of the 2nd pin, 8th pin of driving chip U1 and the 11st pin increase output pulse width, the electric current that PNP triode Q3 collector electrode is flowed out increases, 16th pin of the positive pole of Voltage Feedback and the corresponding driving chip U1 of negative pole difference and the 15th pin, after the 12nd pin input voltage of driving chip U1, 14th pin meeting output reference voltage, the voltage of the 16th pin is the voltage at the 41 resistance R41 two ends, when reference voltage is less than the voltage of the 16th pin, 8th pin of driving chip U1 and the 11st pin reduce output pulse width, when reference voltage is greater than the voltage of the 16th pin, 8th pin of driving chip U1 and the 11st pin increase output pulse width, such driving chip U1 makes the first output port P2 export constant voltage/constant current by current feedback and Voltage Feedback, first output port P2 also can be connected with the personnel location system in tunnel and Safety monitoring system, for personnel location system and Safety monitoring system power supply.
The explosion-proof intrinsically safe tunnel lamp of above-mentioned Combined mine, the terminals of the first output port P2 and LED light source are connected with over-voltage and over-current latch-up protection circuit, over-voltage and over-current latch-up protection circuit comprises the power switch U2 that model is AO4405, comparator U5A, current amplifier U5B and model are the pressurizer ZD2 of TL431ACLP, the positive terminals of the first output port P2 are by the second electric capacity C2 ground connection, positive terminals are connected with the 3rd pin of pressurizer ZD2 by the 14 resistance R14, also by the 19 resistance R19 that connects successively and the 20 resistance R20 ground connection, 1st pin of pressurizer ZD2 is connected with the 3rd pin, 3rd pin is connected with the 2nd pin of pressurizer ZD2 with the 16 resistance R16 by the 15 resistance R15 connected successively, 2nd pin ground connection, the inverting input of comparator U5A is connected with the negative pole of the 3rd crystal diode D3, the positive pole of the 3rd crystal diode D3 is connected between the 19 resistance R19 and the 20 resistance R20, inverting input is by the 21 resistance R21 ground connection, the 7th electric capacity C7 is connected with between inverting input and output, in-phase input end is connected between the 15 resistance R15 and the 16 resistance R16, the output of comparator U5A is connected with the base stage of PNP triode Q2 by the 23 resistance R23, the grounded emitter of PNP triode Q2, collector electrode is connected with the positive terminals of the first output port P2 by the 22 resistance R22, the positive pole of collector electrode also with the second crystal diode D2 is connected, the negative pole of the second crystal diode D2 is connected with the inverting input of comparator U5A, collector electrode is also connected with the 4th pin of power switch U2, 1st pin of power switch U2, the positive terminals of the 2nd pin and the 3rd pin all with the first output port P2, 5th pin, 6th pin, 7th pin is connected with the 1st pin of the 8th pin all with the second output port P3, 2nd pin of the second output port P3 is by the 27 resistance R27 in parallel and the 28 resistance R28 ground connection, 2nd pin is also connected with the inverting input of current amplifier U5B by the 25 resistance R25, the inverting input of current amplifier U5B is connected with output by the 24 resistance R24, in-phase input end is by the 26 resistance R26 ground connection, output is connected with the positive pole of the 4th crystal diode D4 by the 18 resistance R18, the negative pole of the 4th crystal diode D4 is connected with the inverting input of comparator U5A, the positive pole of the 4th crystal diode D4 is also by the 17 resistance R17 ground connection, pressurizer ZD2 provides baseline threshold to the in-phase input end of comparator U5A, the input voltage of the inverting input of comparator U5A is the dividing potential drop of voltage on the 20 resistance R20 that the first output port P2 exports, when the baseline threshold of anti-phase input terminal voltage higher than in-phase input end, comparator U5A output low level, PNP triode Q2 ends, power switch U2 ends, output loop is cut off, the voltage that first output port P2 exports simultaneously passes through the second crystal diode D2, impel comparator U5A output level drop-down to be low level, to realize latching process.
The explosion-proof intrinsically safe tunnel lamp of above-mentioned Combined mine, described explosion-proof casing inner space is divided into LED drive board chamber, intrinsic safety electric source chamber and power supply wiring chamber, power-supply controller of electric is placed in power supply wiring cavity, place LED light source component in LED drive board chamber, in intrinsic safety electric source chamber, place LED light source driver.
The invention provides the explosion-proof intrinsically safe tunnel lamp of a kind of Combined mine; the drive circuit of this tunnel lamp inside has current feedback, Voltage Feedback and over-voltage and over-current latch-up protection effect; the electric current and voltage that drive circuit is exported is constant; this tunnel lamp also can be personnel location system into periphery and Safety monitoring system power supply, reaches the technical requirement of coal mine roadway to tunnel lamp.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of LED light source driver.
Fig. 2 is the circuit theory diagrams of over-voltage and over-current latch-up protection circuit.
Embodiment
The explosion-proof intrinsically safe tunnel lamp of Combined mine, comprise explosion-proof casing, explosion-proof casing is provided with LED light source, power-supply controller of electric and LED light source driver is provided with in explosion-proof casing, LED light source driver comprises input port P1, first output port P2 and model are KA7500B, inside is written with the driving chip U1 of voltage compare program, the 2nd pin ground connection of input port P1, 1st pin is by the 8th electric capacity C8 ground connection, 1st pin is also connected with the emitter of PNP triode Q3, the 30 resistance R30 is also connected with between the emitter of PNP triode Q3 and base stage, the collector electrode of PNP triode Q3 is connected with the negative pole of voltage-stabiliser tube ZD1, the plus earth of voltage-stabiliser tube ZD1, collector electrode is also connected with the 1st pin of the first output port P2 with the 32 resistance R32 by the inductance L 1 connected successively, the 2nd pin ground connection of the first output port P2, 1st pin of the first output port P2 is by the 9th electric capacity C9 ground connection, also by the 34 resistance R34 that connects successively and the 41 resistance R41 ground connection, 32 resistance R32 two ends are also parallel with the 33 resistance R33, 1st pin of driving chip U1 is by the 39 resistance R39 ground connection, also be connected between inductance L the 1 and the 32 resistance R32 by the 37 resistance R37, 2nd pin is connected with the 3rd pin by the 13 electric capacity C13, 2nd pin is connected with the 1st pin of the first output port P2 by the 38 resistance R38, the 40 resistance R40 also by connecting successively, 29 resistance R29 and the tenth electric capacity C10 ground connection, 3rd pin is connected with the 15th pin by the 12 electric capacity C12, 4th pin is by the 35 resistance R35 ground connection, 5th pin is by the 14 electric capacity C14 ground connection, 6th pin is by the 36 resistance R36 ground connection, 7th pin, 9th pin, 10th pin and the 13rd pin all ground connection, 8th pin is connected with the 11st pin, 11st pin is connected with the base stage of PNP triode Q3 by the 31 resistance R31, 12nd pin is connected with PNP triode Q3 emitter, 14th pin is connected between the 40 resistance R40 and the 29 resistance R29, 15th pin is connected between the 29 resistance R29 and the tenth electric capacity C10, 16th pin is by the 41 resistance R41 ground connection, also be connected with the 1st pin of the first output port P2 by the 34 resistance R34, the output of power-supply controller of electric is connected with the terminals of input port P1, and the terminals of the first output port P2 are connected with LED light source.
The explosion-proof intrinsically safe tunnel lamp of above-mentioned Combined mine, the terminals of the first output port P2 and LED light source are connected with over-voltage and over-current latch-up protection circuit, over-voltage and over-current latch-up protection circuit comprises the power switch U2 that model is AO4405, comparator U5A, current amplifier U5B and model are the pressurizer ZD2 of TL431ACLP, the positive terminals of the first output port P2 are by the second electric capacity C2 ground connection, positive terminals are connected with the 3rd pin of pressurizer ZD2 by the 14 resistance R14, also by the 19 resistance R19 that connects successively and the 20 resistance R20 ground connection, 1st pin of pressurizer ZD2 is connected with the 3rd pin, 3rd pin is connected with the 2nd pin of pressurizer ZD2 with the 16 resistance R16 by the 15 resistance R15 connected successively, 2nd pin ground connection, the inverting input of comparator U5A is connected with the negative pole of the 3rd crystal diode D3, the positive pole of the 3rd crystal diode D3 is connected between the 19 resistance R19 and the 20 resistance R20, inverting input is by the 21 resistance R21 ground connection, the 7th electric capacity C7 is connected with between inverting input and output, in-phase input end is connected between the 15 resistance R15 and the 16 resistance R16, the output of comparator U5A is connected with the base stage of PNP triode Q2 by the 23 resistance R23, the grounded emitter of PNP triode Q2, collector electrode is connected with the positive terminals of the first output port P2 by the 22 resistance R22, the positive pole of collector electrode also with the second crystal diode D2 is connected, the negative pole of the second crystal diode D2 is connected with the inverting input of comparator U5A, collector electrode is also connected with the 4th pin of power switch U2, 1st pin of power switch U2, the positive terminals of the 2nd pin and the 3rd pin all with the first output port P2, 5th pin, 6th pin, 7th pin is connected with the 1st pin of the 8th pin all with the second output port P3, 2nd pin of the second output port P3 is by the 27 resistance R27 in parallel and the 28 resistance R28 ground connection, 2nd pin is also connected with the inverting input of current amplifier U5B by the 25 resistance R25, the inverting input of current amplifier U5B is connected with output by the 24 resistance R24, in-phase input end is by the 26 resistance R26 ground connection, output is connected with the positive pole of the 4th crystal diode D4 by the 18 resistance R18, the negative pole of the 4th crystal diode D4 is connected with the inverting input of comparator U5A, the positive pole of the 4th crystal diode D4 is also by the 17 resistance R17 ground connection, the terminals of the second output port P3 are connected with LED light source.
The explosion-proof intrinsically safe tunnel lamp of above-mentioned Combined mine, described explosion-proof casing inner space is divided into LED drive board chamber, intrinsic safety electric source chamber and power supply wiring chamber, power-supply controller of electric is placed in power supply wiring cavity, place LED light source component in LED drive board chamber, in intrinsic safety electric source chamber, place LED light source driver.
Claims (3)
1. the explosion-proof intrinsically safe tunnel lamp of Combined mine, comprise explosion-proof casing, explosion-proof casing is provided with LED light source, power-supply controller of electric and LED light source driver is provided with in explosion-proof casing, it is characterized in that LED light source driver comprises input port P1, first output port P2 and model are KA7500B, inside is written with the driving chip U1 of voltage compare program, the 2nd pin ground connection of input port P1, 1st pin is by the 8th electric capacity C8 ground connection, 1st pin is also connected with the emitter of PNP triode Q3, the 30 resistance R30 is also connected with between the emitter of PNP triode Q3 and base stage, the collector electrode of PNP triode Q3 is connected with the negative pole of voltage-stabiliser tube ZD1, the plus earth of voltage-stabiliser tube ZD1, collector electrode is also connected with the 1st pin of the first output port P2 with the 32 resistance R32 by the inductance L 1 connected successively, the 2nd pin ground connection of the first output port P2, 1st pin of the first output port P2 is by the 9th electric capacity C9 ground connection, also by the 34 resistance R34 that connects successively and the 41 resistance R41 ground connection, 32 resistance R32 two ends are also parallel with the 33 resistance R33, 1st pin of driving chip U1 is by the 39 resistance R39 ground connection, also be connected between inductance L the 1 and the 32 resistance R32 by the 37 resistance R37, 2nd pin is connected with the 3rd pin by the 13 electric capacity C13, 2nd pin is connected with the 1st pin of the first output port P2 by the 38 resistance R38, the 40 resistance R40 also by connecting successively, 29 resistance R29 and the tenth electric capacity C10 ground connection, 3rd pin is connected with the 15th pin by the 12 electric capacity C12, 4th pin is by the 35 resistance R35 ground connection, 5th pin is by the 14 electric capacity C14 ground connection, 6th pin is by the 36 resistance R36 ground connection, 7th pin, 9th pin, 10th pin and the 13rd pin all ground connection, 8th pin is connected with the 11st pin, 11st pin is connected with the base stage of PNP triode Q3 by the 31 resistance R31, 12nd pin is connected with PNP triode Q3 emitter, 14th pin is connected between the 40 resistance R40 and the 29 resistance R29, 15th pin is connected between the 29 resistance R29 and the tenth electric capacity C10, 16th pin is by the 41 resistance R41 ground connection, also be connected with the 1st pin of the first output port P2 by the 34 resistance R34, the output of power-supply controller of electric is connected with the terminals of input port P1, and the terminals of the first output port P2 are connected with LED light source.
2. the explosion-proof intrinsically safe tunnel lamp of Combined mine according to claim 1, it is characterized in that terminals and the LED light source of the first output port P2 are connected with over-voltage and over-current latch-up protection circuit, over-voltage and over-current latch-up protection circuit comprises the power switch U2 that model is AO4405, comparator U5A, current amplifier U5B and model are the pressurizer ZD2 of TL431ACLP, the positive terminals of the first output port P2 are by the second electric capacity C2 ground connection, positive terminals are connected with the 3rd pin of pressurizer ZD2 by the 14 resistance R14, also by the 19 resistance R19 that connects successively and the 20 resistance R20 ground connection, 1st pin of pressurizer ZD2 is connected with the 3rd pin, 3rd pin is connected with the 2nd pin of pressurizer ZD2 with the 16 resistance R16 by the 15 resistance R15 connected successively, 2nd pin ground connection, the inverting input of comparator U5A is connected with the negative pole of the 3rd crystal diode D3, the positive pole of the 3rd crystal diode D3 is connected between the 19 resistance R19 and the 20 resistance R20, inverting input is by the 21 resistance R21 ground connection, the 7th electric capacity C7 is connected with between inverting input and output, in-phase input end is connected between the 15 resistance R15 and the 16 resistance R16, the output of comparator U5A is connected with the base stage of PNP triode Q2 by the 23 resistance R23, the grounded emitter of PNP triode Q2, collector electrode is connected with the positive terminals of the first output port P2 by the 22 resistance R22, the positive pole of collector electrode also with the second crystal diode D2 is connected, the negative pole of the second crystal diode D2 is connected with the inverting input of comparator U5A, collector electrode is also connected with the 4th pin of power switch U2, 1st pin of power switch U2, the positive terminals of the 2nd pin and the 3rd pin all with the first output port P2, 5th pin, 6th pin, 7th pin is connected with the 1st pin of the 8th pin all with the second output port P3, 2nd pin of the second output port P3 is by the 27 resistance R27 in parallel and the 28 resistance R28 ground connection, 2nd pin is also connected with the inverting input of current amplifier U5B by the 25 resistance R25, the inverting input of current amplifier U5B is connected with output by the 24 resistance R24, in-phase input end is by the 26 resistance R26 ground connection, output is connected with the positive pole of the 4th crystal diode D4 by the 18 resistance R18, the negative pole of the 4th crystal diode D4 is connected with the inverting input of comparator U5A, the positive pole of the 4th crystal diode D4 is also by the 17 resistance R17 ground connection, the terminals of the second output port P3 are connected with LED light source.
3. the explosion-proof intrinsically safe tunnel lamp of Combined mine according to claim 2, it is characterized in that explosion-proof casing inner space is divided into LED drive board chamber, intrinsic safety electric source chamber and power supply wiring chamber, place power-supply controller of electric in power supply wiring cavity, in LED drive board chamber, place LED light source driver.
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| CN201410780326.0A CN104507221B (en) | 2014-12-17 | 2014-12-17 | Combined mining anti-explosion and intrinsic safety type tunnel lamp |
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| CN201410780326.0A CN104507221B (en) | 2014-12-17 | 2014-12-17 | Combined mining anti-explosion and intrinsic safety type tunnel lamp |
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| CN104507221B CN104507221B (en) | 2017-01-18 |
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| EP3187779A1 (en) * | 2015-12-30 | 2017-07-05 | Bomar S.A. w upadlosci ukladowej | Explosion proof power supply unit for underground mines |
| CN106982502A (en) * | 2017-04-21 | 2017-07-25 | 山东华鼎伟业能源科技股份有限公司 | Intelligently realizing explosion-proof illuminator and its control method with automatic sensing function |
| CN108988309A (en) * | 2018-08-20 | 2018-12-11 | 大同裕隆环保有限责任公司 | Based on intrinsic safety electro spark suppression circuit |
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