CN204335042U - A kind of LED pulse detection system based on Linear Driving - Google Patents
A kind of LED pulse detection system based on Linear Driving Download PDFInfo
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- CN204335042U CN204335042U CN201420735320.7U CN201420735320U CN204335042U CN 204335042 U CN204335042 U CN 204335042U CN 201420735320 U CN201420735320 U CN 201420735320U CN 204335042 U CN204335042 U CN 204335042U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a kind of LED pulse detection system based on Linear Driving, mainly comprise transformer T, the current rectifying and wave filtering circuit be connected with transformer T secondary, the impulse hits testing circuit be connected with current rectifying and wave filtering circuit, the treatment circuit be simultaneously connected with current rectifying and wave filtering circuit with impulse hits testing circuit, the voltage stabilizing circuit be connected with treatment circuit forms, and it is characterized in that: between current rectifying and wave filtering circuit and treatment circuit, be also connected with linear drive circuit; Described linear drive circuit by driving chip U3, triode VT3, triode VT4, triode VT5, triode VT6, the compositions such as the polar capacitor C5 that positive pole is connected with current rectifying and wave filtering circuit, negative pole is connected with the IN1 pin of driving chip U3 after resistance R6.Linear drive circuit of the present utility model can improve the driveability of LED drive system, to reach the effect of protection LED group.
Description
Technical field
The utility model relates to a kind of electronic system, specifically refers to a kind of LED pulse detection system based on Linear Driving.
Background technology
LED, as novel energy-conserving light source, with its environmental protection, the feature such as energy-conservation, the life-span is long, volume is little, is extensively received by people and adopts.Due to the semiconductor device that LED is characteristic sensitivity, have negative temperature characteristic again, therefore in application process, LED drive system plays considerable effect for impelling LED to be in stable, reliable operating state.
But the driveability of present LED drive system is also unstable, affects the normal work of LED to a great extent.
Utility model content
The purpose of this utility model is the defect of the driveability instability overcoming current LED drive system, provides a kind of stable LED pulse detection system based on Linear Driving.
The purpose of this utility model is achieved through the following technical solutions: a kind of LED pulse detection system based on Linear Driving, mainly comprise transformer T, the current rectifying and wave filtering circuit be connected with transformer T secondary, the impulse hits testing circuit be connected with current rectifying and wave filtering circuit, the treatment circuit be simultaneously connected with current rectifying and wave filtering circuit with impulse hits testing circuit, the voltage stabilizing circuit be connected with treatment circuit forms, between current rectifying and wave filtering circuit and treatment circuit, be also connected with linear drive circuit, described linear drive circuit is by driving chip U3, triode VT3, triode VT4, triode VT5, triode VT6, positive pole is connected with current rectifying and wave filtering circuit, the polar capacitor C5 that negative pole is connected with the IN1 pin of driving chip U3 after resistance R6, one end is connected with the collector electrode of triode VT6, the resistance R7 that the other end is connected with the base stage of triode VT3 after resistance R8, positive pole is connected with the base stage of triode VT6, the polar capacitor C7 that negative pole is connected with the IN1 pin of driving chip U3, positive pole is connected with the IN2 pin of driving chip U3, the polar capacitor C6 of minus earth, one end is connected with the emitter of triode VT6, the resistance R10 that the other end is connected with the base stage of triode VT5, one end is connected with the base stage of triode VT5, the resistance R9 that the other end is connected with the base stage of triode VT3, N pole is connected with the collector electrode of triode VT6, the diode D3 that P pole is connected with the collector electrode of triode VT5, positive terminal is connected with the collector electrode of triode VT6, the not gate K that end of oppisite phase is connected with triode VT4 collector electrode, one end is connected with triode VT4 emitter, the resistance R12 that the other end is connected with the emitter of triode VT3 after resistance R11, the end of oppisite phase of P pole NAND gate K is connected, the diode D4 that N pole is connected with the tie point of resistance R12 with resistance R11 forms, the VCC pin of described driving chip U3 is connected with the base stage of triode VT6, END pin ground connection, OUT pin are connected with the collector electrode of triode VT5, the collector electrode of triode VT5 is also connected with the base stage of triode VT4, its emitter is connected with the base stage of triode man VT3, the grounded collector of triode VT3, the N pole of diode D4 is connected with treatment circuit.
Described current rectifying and wave filtering circuit is made up of diode bridge rectifier U and polar capacitor C1; Two inputs of diode bridge rectifier U are connected with non-same polarity with the Same Name of Ends of transformer T secondary respectively, and the positive and negative electrode of polar capacitor C1 is connected with two outputs of diode bridge rectifier U respectively; Meanwhile, the positive pole of polar capacitor C1 is connected with the positive pole of polar capacitor C5, its negative pole is then connected with impulse hits testing circuit.
Described impulse hits testing circuit is by detection chip U1, triode VT1, the resistance R1 that one end is connected with the VCC pin of detection chip U1, the other end is connected with the base stage of triode VT1, the resistance R2 that one end is connected with the emitter of triode VT1, the other end is connected with DIS pin with the THRE pin of detection chip U1 simultaneously, positive pole is connected with the RESET pin of detection chip U1 the polar capacitor C2 of minus earth after resistance R3, and positive pole is connected with the CONT pin of detection chip U1, the polar capacitor C3 of minus earth forms; The VCC pin of described detection chip U1 is connected with the negative pole of polar capacitor C1, and its DIS pin is all connected with the positive pole of polar capacitor C2 with TRI pin, and OUT pin is connected with treatment circuit, GND pin ground connection; The grounded collector of described triode VT1.
Described treatment circuit is by process chip U2, triode VT2, the diode D1 that N pole is connected with the collector electrode of triode VT2, P pole is connected with voltage stabilizing circuit with the OUT pin of detection chip U1 simultaneously, one end is connected with the GND pin of process chip U2, the resistance R4 of other end ground connection forms; The base stage of described triode VT2 is connected with the OUT pin of detection chip U1 with the IB pin of process chip U2 simultaneously, and its emitter is then connected with the OB pin of process chip U2; The VCC pin of process chip U2 is connected with the N pole of diode D4 and voltage stabilizing circuit simultaneously, and its IB pin is also connected with VCC pin, and IA pin is then connected with voltage stabilizing circuit.
Described voltage stabilizing circuit comprises polar capacitor C4, resistance R5, voltage stabilizing didoe D2; Its N pole is got back in the P pole of voltage stabilizing didoe D2 after resistance R5 and polar capacitor C4; The P pole of described voltage stabilizing didoe D2 is also connected with the IA pin of process chip U2 with the P pole of diode D1 simultaneously, and resistance R5 is then connected with the VCC pin of process chip U2 with the tie point of polar capacitor C4; LED group is then serially connected between polar capacitor C4 and voltage stabilizing didoe D2.
Described driving chip U3 is LM387 integrated chip.
The utility model comparatively prior art is compared and is had the following advantages and beneficial effect:
(1) linear drive circuit of the present utility model can improve the driveability of LED drive system, to reach the effect of protection LED group.
(2) whether city's electric pulse that impulse hits testing circuit of the present utility model can detect input has mistake, and can adjust mistake, makes whole drive system more stable, thus extends the useful life of LED.
(3) the utility model adopts LM387 chip as driving chip, its highly sensitive, low price.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the structural representation of the utility model linear drive circuit.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, LED pulse detection system based on Linear Driving described in the utility model, mainly comprise transformer T, the current rectifying and wave filtering circuit be connected with transformer T secondary, the impulse hits testing circuit be connected with current rectifying and wave filtering circuit, the treatment circuit be simultaneously connected with current rectifying and wave filtering circuit with impulse hits testing circuit, the voltage stabilizing circuit be connected with treatment circuit forms, between current rectifying and wave filtering circuit and treatment circuit, be also connected with linear drive circuit.
As shown in Figure 2, described linear drive circuit is by driving chip U3, triode VT3, triode VT4, triode VT5, triode VT6, positive pole is connected with current rectifying and wave filtering circuit, the polar capacitor C5 that negative pole is connected with the IN1 pin of driving chip U3 after resistance R6, one end is connected with the collector electrode of triode VT6, the resistance R7 that the other end is connected with the base stage of triode VT3 after resistance R8, positive pole is connected with the base stage of triode VT6, the polar capacitor C7 that negative pole is connected with the IN1 pin of driving chip U3, positive pole is connected with the IN2 pin of driving chip U3, the polar capacitor C6 of minus earth, one end is connected with the emitter of triode VT6, the resistance R10 that the other end is connected with the base stage of triode VT5, one end is connected with the base stage of triode VT5, the resistance R9 that the other end is connected with the base stage of triode VT3, N pole is connected with the collector electrode of triode VT6, the diode D3 that P pole is connected with the collector electrode of triode VT5, positive terminal is connected with the collector electrode of triode VT6, the not gate K that end of oppisite phase is connected with triode VT4 collector electrode, one end is connected with triode VT4 emitter, the resistance R12 that the other end is connected with the emitter of triode VT3 after resistance R11, the end of oppisite phase of P pole NAND gate K is connected, the diode D4 that N pole is connected with the tie point of resistance R12 with resistance R11 forms, the VCC pin of described driving chip U3 is connected with the base stage of triode VT6, END pin ground connection, OUT pin are connected with the collector electrode of triode VT5, the collector electrode of triode VT5 is also connected with the base stage of triode VT4, its emitter is connected with the base stage of triode man VT3, the grounded collector of triode VT3, the N pole of diode D4 is connected with treatment circuit.Linear drive circuit of the present utility model can improve the driveability of LED drive system, to reach the effect of protection LED group.Meanwhile, adopt LM387 chip as driving chip, its highly sensitive, low price.
Described current rectifying and wave filtering circuit is made up of diode bridge rectifier U and polar capacitor C1; Two inputs of diode bridge rectifier U are connected with non-same polarity with the Same Name of Ends of transformer T secondary respectively, and the positive and negative electrode of polar capacitor C1 is connected with two outputs of diode bridge rectifier U respectively; Meanwhile, the positive pole of polar capacitor C1 is connected with the positive pole of polar capacitor C5, its negative pole is then connected with impulse hits testing circuit.
Described impulse hits testing circuit is by detection chip U1, triode VT1, the resistance R1 that one end is connected with the VCC pin of detection chip U1, the other end is connected with the base stage of triode VT1, the resistance R2 that one end is connected with the emitter of triode VT1, the other end is connected with DIS pin with the THRE pin of detection chip U1 simultaneously, positive pole is connected with the RESET pin of detection chip U1 the polar capacitor C2 of minus earth after resistance R3, and positive pole is connected with the CONT pin of detection chip U1, the polar capacitor C3 of minus earth forms; The VCC pin of described detection chip U1 is connected with the negative pole of polar capacitor C1, and its DIS pin is all connected with the positive pole of polar capacitor C2 with TRI pin, and OUT pin is connected with treatment circuit, GND pin ground connection; The grounded collector of described triode VT1.Impulse hits testing circuit can detect city's electric pulse of input, and detect it and whether there is mistake, if anything is wrong then can be corrected automatically, thus makes the stability of system higher.In order to better realize implementation result, detection chip U1 is preferably NE555.
Described treatment circuit is by process chip U2, triode VT2, the diode D1 that N pole is connected with the collector electrode of triode VT2, P pole is connected with voltage stabilizing circuit with the OUT pin of detection chip U1 simultaneously, one end is connected with the GND pin of process chip U2, the resistance R4 of other end ground connection forms; The base stage of described triode VT2 is connected with the OUT pin of detection chip U1 with the IB pin of process chip U2 simultaneously, and its emitter is then connected with the OB pin of process chip U2; The VCC pin of process chip U2 is connected with the N pole of diode D4 and voltage stabilizing circuit simultaneously, and its IB pin is also connected with VCC pin, and IA pin is then connected with voltage stabilizing circuit.
Described voltage stabilizing circuit comprises polar capacitor C4, resistance R5, voltage stabilizing didoe D2; Its N pole is got back in the P pole of voltage stabilizing didoe D2 after resistance R5 and polar capacitor C4; The P pole of described voltage stabilizing didoe D2 is also connected with the IA pin of process chip U2 with the P pole of diode D1 simultaneously, and resistance R5 is then connected with the VCC pin of process chip U2 with the tie point of polar capacitor C4; LED group is then serially connected between polar capacitor C4 and voltage stabilizing didoe D2.
As mentioned above, just the utility model can well be realized.
Claims (6)
1. the LED pulse detection system based on Linear Driving, mainly comprise transformer T, the current rectifying and wave filtering circuit be connected with transformer T secondary, the impulse hits testing circuit be connected with current rectifying and wave filtering circuit, the treatment circuit be simultaneously connected with current rectifying and wave filtering circuit with impulse hits testing circuit, the voltage stabilizing circuit be connected with treatment circuit forms, and it is characterized in that: between current rectifying and wave filtering circuit and treatment circuit, be also connected with linear drive circuit, described linear drive circuit is by driving chip U3, triode VT3, triode VT4, triode VT5, triode VT6, positive pole is connected with current rectifying and wave filtering circuit, the polar capacitor C5 that negative pole is connected with the IN1 pin of driving chip U3 after resistance R6, one end is connected with the collector electrode of triode VT6, the resistance R7 that the other end is connected with the base stage of triode VT3 after resistance R8, positive pole is connected with the base stage of triode VT6, the polar capacitor C7 that negative pole is connected with the IN1 pin of driving chip U3, positive pole is connected with the IN2 pin of driving chip U3, the polar capacitor C6 of minus earth, one end is connected with the emitter of triode VT6, the resistance R10 that the other end is connected with the base stage of triode VT5, one end is connected with the base stage of triode VT5, the resistance R9 that the other end is connected with the base stage of triode VT3, N pole is connected with the collector electrode of triode VT6, the diode D3 that P pole is connected with the collector electrode of triode VT5, positive terminal is connected with the collector electrode of triode VT6, the not gate K that end of oppisite phase is connected with triode VT4 collector electrode, one end is connected with triode VT4 emitter, the resistance R12 that the other end is connected with the emitter of triode VT3 after resistance R11, the end of oppisite phase of P pole NAND gate K is connected, the diode D4 that N pole is connected with the tie point of resistance R12 with resistance R11 forms, the VCC pin of described driving chip U3 is connected with the base stage of triode VT6, END pin ground connection, OUT pin are connected with the collector electrode of triode VT5, the collector electrode of triode VT5 is also connected with the base stage of triode VT4, its emitter is connected with the base stage of triode man VT3, the grounded collector of triode VT3, the N pole of diode D4 is connected with treatment circuit.
2. a kind of LED pulse detection system based on Linear Driving according to claim 1, is characterized in that: described current rectifying and wave filtering circuit is made up of diode bridge rectifier U and polar capacitor C1; Two inputs of diode bridge rectifier U are connected with non-same polarity with the Same Name of Ends of transformer T secondary respectively, and the positive and negative electrode of polar capacitor C1 is connected with two outputs of diode bridge rectifier U respectively; Meanwhile, the positive pole of polar capacitor C1 is connected with the positive pole of polar capacitor C5, its negative pole is then connected with impulse hits testing circuit.
3. a kind of LED pulse detection system based on Linear Driving according to claim 2, it is characterized in that: described impulse hits testing circuit is by detection chip U1, triode VT1, one end is connected with the VCC pin of detection chip U1, the resistance R1 that the other end is connected with the base stage of triode VT1, one end is connected with the emitter of triode VT1, the resistance R2 that the other end is connected with DIS pin with the THRE pin of detection chip U1 simultaneously, positive pole is connected with the RESET pin of detection chip U1 the polar capacitor C2 of minus earth after resistance R3, and positive pole is connected with the CONT pin of detection chip U1, the polar capacitor C3 of minus earth forms, the VCC pin of described detection chip U1 is connected with the negative pole of polar capacitor C1, and its DIS pin is all connected with the positive pole of polar capacitor C2 with TRI pin, and OUT pin is connected with treatment circuit, GND pin ground connection, the grounded collector of described triode VT1.
4. a kind of LED pulse detection system based on Linear Driving according to claim 3, it is characterized in that: described treatment circuit is by process chip U2, triode VT2, the diode D1 that N pole is connected with the collector electrode of triode VT2, P pole is connected with voltage stabilizing circuit with the OUT pin of detection chip U1 simultaneously, one end is connected with the GND pin of process chip U2, the resistance R4 of other end ground connection forms; The base stage of described triode VT2 is connected with the OUT pin of detection chip U1 with the IB pin of process chip U2 simultaneously, and its emitter is then connected with the OB pin of process chip U2; The VCC pin of process chip U2 is connected with the N pole of diode D4 and voltage stabilizing circuit simultaneously, and its IB pin is also connected with VCC pin, and IA pin is then connected with voltage stabilizing circuit.
5. a kind of LED pulse detection system based on Linear Driving according to claim 4, is characterized in that: described voltage stabilizing circuit comprises polar capacitor C4, resistance R5, voltage stabilizing didoe D2; Its N pole is got back in the P pole of voltage stabilizing didoe D2 after resistance R5 and polar capacitor C4; The P pole of described voltage stabilizing didoe D2 is also connected with the IA pin of process chip U2 with the P pole of diode D1 simultaneously, and resistance R5 is then connected with the VCC pin of process chip U2 with the tie point of polar capacitor C4; LED group is then serially connected between polar capacitor C4 and voltage stabilizing didoe D2.
6. a kind of LED pulse detection system based on Linear Driving according to any one of Claims 1 to 5, is characterized in that: described driving chip U3 is LM387 integrated chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735320.7U CN204335042U (en) | 2014-11-29 | 2014-11-29 | A kind of LED pulse detection system based on Linear Driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735320.7U CN204335042U (en) | 2014-11-29 | 2014-11-29 | A kind of LED pulse detection system based on Linear Driving |
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| Publication Number | Publication Date |
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| CN204335042U true CN204335042U (en) | 2015-05-13 |
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| CN201420735320.7U Expired - Fee Related CN204335042U (en) | 2014-11-29 | 2014-11-29 | A kind of LED pulse detection system based on Linear Driving |
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| CN (1) | CN204335042U (en) |
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- 2014-11-29 CN CN201420735320.7U patent/CN204335042U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20151129 |